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Add glide.yaml and vendor deps

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Dalton Hubble 2016-12-03 22:43:32 -08:00
parent db918f12ad
commit 5b3d5e81bd
18880 changed files with 5166045 additions and 1 deletions
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/oci-validate-examples
output

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

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approve_by_comment: true
approve_regex: '^(Approved|lgtm|LGTM|:shipit:|:star:|:\+1:|:ship:)'
reject_regex: ^Rejected
reset_on_push: true
author_approval: ignored
signed_off_by:
required: true
reviewers:
teams:
- image-spec-maintainers
name: default
required: 2

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#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail
ret=0
for file in $(find . -type f -iname '*.go' ! -path './vendor/*'); do
if ! head -n3 "${file}" | grep -Eq "(Copyright|generated|GENERATED)"; then
echo "${file}:missing license header"
ret=1
fi
done
exit $ret

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#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail
if [ ! $(command -v gometalinter) ]; then
go get -u github.com/alecthomas/gometalinter
gometalinter --install
fi
for d in $(find . -type d -not -iwholename '*.git*' -a -not -iname '.tool' -a -not -iwholename '*vendor*'); do
gometalinter \
--exclude='error return value not checked.*(Close|Log|Print).*\(errcheck\)$' \
--exclude='.*_test\.go:.*error return value not checked.*\(errcheck\)$' \
--exclude='duplicate of.*_test.go.*\(dupl\)$' \
--exclude='schema/fs.go' \
--disable=aligncheck \
--disable=gotype \
--disable=gas \
--cyclo-over=35 \
--tests \
--deadline=10s "${d}"
done

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language: go
go:
- 1.6
sudo: required
services:
- docker
before_script:
- export PATH=$HOME/gopath/bin:$PATH
before_install:
- docker pull vbatts/pandoc
- make install.tools
- go get -u github.com/alecthomas/gometalinter
- gometalinter --install
- go get -t -d ./...
install: true
script:
- make .gitvalidation
- make lint
- make check-license
- make test
- make docs

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Open Container Initiative Image Format Specification
Changes with v0.4.0:
Additions:
* Go package added for types
https://godoc.org/github.com/opencontainers/image-spec/specs-go/v1 (#172)
* oci-image-tool: man page docs added
https://github.com/opencontainers/image-spec/tree/master/cmd/oci-image-tool/man
(#180)
Minor fixes and documentation:
* oci-image-tool: replace colon with hyphen to be windows friendly (#177)
* oci-image-tool: fix various bugs in extraction of images (#177)
* manifest: size as int64 allowing for huge containers (#153)
* manifest: move duplicate descriptions to reference descriptor doc (#167)
* serialization: explain opaques and their role (#171)

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# Project governance
The [OCI charter][charter] §5.b.viii tasks an OCI Project's maintainers (listed in the repository's MAINTAINERS file and sometimes referred to as "the TDC", [§5.e][charter]) with:
> Creating, maintaining and enforcing governance guidelines for the TDC, approved by the maintainers, and which shall be posted visibly for the TDC.
This section describes generic rules and procedures for fulfilling that mandate.
## Proposing a motion
A maintainer SHOULD propose a motion on the dev@opencontainers.org mailing list (except [security issues](#security-issues)) with another maintainer as a co-sponsor.
## Voting
Voting on a proposed motion SHOULD happen on the dev@opencontainers.org mailing list (except [security issues](#security-issues)) with maintainers posting LGTM or REJECT.
Maintainers MAY also explicitly not vote by posting ABSTAIN (which is useful to revert a previous vote).
Maintainers MAY post multiple times (e.g. as they revise their position based on feeback), but only their final post counts in the tally.
A proposed motion is adopted if two-thirds of votes cast, a quorum having voted, are in favor of the release.
Voting SHOULD remain open for a week to collect feedback from the wider community and allow the maintainers to digest the proposed motion.
Under exceptional conditions (e.g. non-major security fix releases) proposals which reach quorum with unanimous support MAY be adopted earlier.
A maintainer MAY choose to reply with REJECT.
A maintainer posting a REJECT MUST include a list of concerns or links to written documentation for those concerns (e.g. GitHub issues or mailing-list threads).
The maintainers SHOULD try to resolve the concerns and wait for the rejecting maintainer to change their opinion to LGTM.
However, a motion MAY be adopted with REJECTs, as outlined in the previous paragraphs.
## Quorum
A quorum is established when at least two-thirds of maintainers have voted.
For projects that are not specifications, a [motion to release](#release-approval) MAY be adopted if the tally is at least three LGTMs and no REJECTs, even if three votes does not meet the usual two-thirds quorum.
## Security issues
Motions with sensitive security implications MUST be proposed on the security@opencontainers.org mailing list instead of dev@opencontainers.org, but should otherwise follow the standard [proposal](#proposing-a-motion) process.
The security@opencontainers.org mailing list includes all members of the TOB.
The TOB will contact the project maintainers and provide a channel for discussing and voting on the motion, but voting will otherwise follow the standard [voting](#voting) and [quorum](#quorum) rules.
The TOB and project maintainers will work together to notify affected parties before making an adopted motion public.
## Amendments
The [project governance](#project-governance) rules and procedures MAY be amended or replaced using the procedures themselves.
The MAINTAINERS of this project governance document is the total set of MAINTAINERS from all Open Containers projects (runC, runtime-spec, and image-spec).
## Subject templates
Maintainers are busy and get lots of email.
To make project proposals recognizable, proposed motions SHOULD use the following subject templates.
### Proposing a motion
> [{project} VOTE]: {motion description} (closes {end of voting window})
For example:
> [runtime-spec VOTE]: Tag 0647920 as 1.0.0-rc (closes 2016-06-03 20:00 UTC)
### Tallying results
After voting closes, a maintainer SHOULD post a tally to the motion thread with a subject template like:
> [{project} {status}]: {motion description} (+{LGTMs} -{REJECTs} #{ABSTAINs})
Where `{status}` is either `adopted` or `rejected`.
For example:
> [runtime-spec adopted]: Tag 0647920 as 1.0.0-rc (+6 -0 #3)
[charter]: https://www.opencontainers.org/about/governance

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# Hacking Guide
## Overview
This guide contains instructions for building artifacts contained in this repository.
### Go
This spec includes several Go packages, and a command line tool considered to be a reference implementation of the OCI image specification.
Prerequisites:
* Go >=1.5
* make
The following make targets are relevant for any work involving the Go packages.
### Linting
The included Go source code is being examined for any linting violations not included in the standard Go compiler. Linting is done using [gometalinter](https://github.com/alecthomas/gometalinter).
Invocation:
```
$ make lint
```
### Tests
This target executes all Go based tests.
Invocation:
```
$ make test
$ make validate-examples
```
### Virtual schema http/FileSystem
The `schema` validator uses a virtual [http/FileSystem](https://golang.org/pkg/net/http/#FileSystem) to load the JSON schema files for validating OCI images and/or manifests.
The virtual file system is generated using the `esc` tool and compiled into consumers of the `schema` package so the JSON schema files don't have to be distributed along with and consumer binaries.
Whenever changes are being done in any of the `schema/*.json` files, one must refresh the generated virtual file system.
Otherwise schema changes will not be visible inside `schema` consumers.
Prerequisites:
* [esc](https://github.com/mjibson/esc)
Invocation:
```
$ make schema-fs
```
### JSON schema formatting
This target auto-formats all JSON files in the `schema` directory using the `jq` tool.
Prerequisites:
* [jq](https://stedolan.github.io/jq/) >=1.5
Invocation:
```
$ make fmt
```
### OCI image specification PDF/HTML documentation files
This target generates a PDF/HTML version of the OCI image specification.
Prerequisites:
* [Docker](https://www.docker.com/)
Invocation:
```
$ make docs
```
### License header check
This target checks if the source code includes necessary headers.
Invocation:
```
$ make check-license
```
### Update vendored dependencies
This target updates all vendored dependencies to their newest available versions. The `glide` tools is being used for the actual management and `glide-vc` tool is being used for stripping down the vendor directory size.
Prerequisites:
* [glide](https://github.com/Masterminds/glide)
* [glide-vc](https://github.com/sgotti/glide-vc)
Invocation:
```
$ make update-deps
```
### Clean build artifacts
This target cleans all generated/compiled artifacts.
Invocation:
```
$ make clean
```
### Create PNG images from dot files
This target generates PNG image files from DOT source files in the `img` directory.
Prerequisites:
* [graphviz](http://www.graphviz.org/)
Invocation:
```
$ make img/media-types.png
```

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http://www.apache.org/licenses/
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Copyright 2016 The Linux Foundation.
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you may not use this file except in compliance with the License.
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Brandon Philips <brandon.philips@coreos.com> (@philips)
Brendan Burns <bburns@microsoft.com> (@brendandburns)
Jason Bouzane <jbouzane@google.com> (@jbouzane)
John Starks <jostarks@microsoft.com> (@jstarks)
Jonathan Boulle <jon.boulle@coreos.com> (@jonboulle)
Stephen Day <stephen.day@docker.com> (@stevvooe)
Vincent Batts <vbatts@redhat.com> (@vbatts)

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GO15VENDOREXPERIMENT=1
export GO15VENDOREXPERIMENT
DOCKER ?= $(shell command -v docker 2>/dev/null)
PANDOC ?= $(shell command -v pandoc 2>/dev/null)
ifeq "$(strip $(PANDOC))" ''
ifneq "$(strip $(DOCKER))" ''
PANDOC = $(DOCKER) run \
-it \
--rm \
-v $(shell pwd)/:/input/:ro \
-v $(shell pwd)/$(OUTPUT_DIRNAME)/:/$(OUTPUT_DIRNAME)/ \
-u $(shell id -u) \
--workdir /input \
docker.io/vbatts/pandoc:1.16.0.2-1.fc24
PANDOC_SRC := /input/
PANDOC_DST := /
endif
endif
# These docs are in an order that determines how they show up in the PDF/HTML docs.
DOC_FILES := \
spec.md \
media-types.md \
descriptor.md \
image-layout.md \
manifest.md \
manifest-list.md \
layer.md \
config.md \
canonicalization.md
FIGURE_FILES := \
img/media-types.png
OUTPUT_DIRNAME ?= output/
DOC_FILENAME ?= oci-image-spec
EPOCH_TEST_COMMIT ?= v0.2.0
default: help
help:
@echo "Usage: make <target>"
@echo
@echo " * 'docs' - produce document in the $(OUTPUT_DIRNAME) directory"
@echo " * 'fmt' - format the json with indentation"
@echo " * 'validate-examples' - validate the examples in the specification markdown files"
@echo " * 'schema-fs' - regenerate the virtual schema http/FileSystem"
@echo " * 'check-license' - check license headers in source files"
@echo " * 'lint' - Execute the source code linter"
@echo " * 'test' - Execute the unit tests"
@echo " * 'update-deps' - Update vendored dependencies"
@echo " * 'img/*.png' - Generate PNG from dot file"
fmt:
for i in schema/*.json ; do jq --indent 2 -M . "$${i}" > xx && cat xx > "$${i}" && rm xx ; done
docs: $(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf $(OUTPUT_DIRNAME)/$(DOC_FILENAME).html
ifeq "$(strip $(PANDOC))" ''
$(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf: $(DOC_FILES) $(FIGURE_FILES)
$(error cannot build $@ without either pandoc or docker)
else
$(OUTPUT_DIRNAME)/$(DOC_FILENAME).pdf: $(DOC_FILES) $(FIGURE_FILES)
@mkdir -p $(OUTPUT_DIRNAME)/ && \
$(PANDOC) -f markdown_github -t latex -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
ls -sh $(shell readlink -f $@)
$(OUTPUT_DIRNAME)/$(DOC_FILENAME).html: $(DOC_FILES) $(FIGURE_FILES)
@mkdir -p $(OUTPUT_DIRNAME)/ && \
cp -ap img/ $(shell pwd)/$(OUTPUT_DIRNAME)/&& \
$(PANDOC) -f markdown_github -t html5 -o $(PANDOC_DST)$@ $(patsubst %,$(PANDOC_SRC)%,$(DOC_FILES))
ls -sh $(shell readlink -f $@)
endif
validate-examples:
go test -run TestValidate ./schema
schema-fs:
@echo "generating schema fs"
@cd schema && printf "%s\n\n%s\n" "$$(cat ../.header)" "$$(go generate)" > fs.go
check-license:
@echo "checking license headers"
@./.tool/check-license
lint:
@echo "checking lint"
@./.tool/lint
test:
go test -race -cover $(shell go list ./... | grep -v /vendor/)
## this uses https://github.com/Masterminds/glide and https://github.com/sgotti/glide-vc
update-deps:
@which glide > /dev/null 2>/dev/null || (echo "ERROR: glide not found. Consider 'make install.tools' target" && false)
glide update --strip-vcs --strip-vendor --update-vendored --delete
glide-vc --only-code --no-tests
# see http://sed.sourceforge.net/sed1line.txt
find vendor -type f -exec sed -i -e :a -e '/^\n*$$/{$$d;N;ba' -e '}' "{}" \;
img/%.png: img/%.dot
dot -Tpng $^ > $@
.PHONY: .gitvalidation
# When this is running in travis, it will only check the travis commit range
.gitvalidation:
@which git-validation > /dev/null 2>/dev/null || (echo "ERROR: git-validation not found. Consider 'make install.tools' target" && false)
ifeq ($(TRAVIS),true)
git-validation -q -run DCO,short-subject,dangling-whitespace
else
git-validation -v -run DCO,short-subject,dangling-whitespace -range $(EPOCH_TEST_COMMIT)..HEAD
endif
.PHONY: install.tools
install.tools: .install.gitvalidation .install.glide .install.glide-vc
.install.gitvalidation:
go get github.com/vbatts/git-validation
.install.glide:
go get github.com/Masterminds/glide
.install.glide-vc:
go get github.com/sgotti/glide-vc
clean:
rm -rf *~ $(OUTPUT_DIRNAME)
.PHONY: \
validate-examples \
check-license \
clean \
lint \
docs \
test

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# OCI Image Format Specification
<div>
<a href="https://travis-ci.org/opencontainers/image-spec">
<img src="https://travis-ci.org/opencontainers/image-spec.svg?branch=master"></img>
</a>
</div>
The OCI Image Format project creates and maintains the software shipping container image format spec (OCI Image Format).
The specification can be found [here](spec.md).
Additional documentation about how this group operates:
- [Code of Conduct](https://github.com/opencontainers/tob/blob/d2f9d68c1332870e40693fe077d311e0742bc73d/code-of-conduct.md)
- [Roadmap](#roadmap)
- [Releases](RELEASES.md)
- [Project Documentation](project.md)
The _optional_ and _base_ layers of all OCI projects are tracked in the [OCI Scope Table](https://www.opencontainers.org/governance/oci-scope-table).
## Running an OCI Image
The OCI Image Format partner project is the [OCI Runtime Spec project](https://github.com/opencontainers/runtime-spec).
The Runtime Specification outlines how to run a "[filesystem bundle](https://github.com/opencontainers/runtime-spec/blob/master/bundle.md)" that is unpacked on disk.
At a high-level an OCI implementation would download an OCI Image then unpack that image into an OCI Runtime filesystem bundle.
At this point the OCI Runtime Bundle would be run by an OCI Runtime.
This entire workflow supports the UX that users have come to expect from container engines like Docker and rkt: primarily, the ability to run an image with no additional arguments:
* docker run example.com/org/app:v1.0.0
* rkt run example.com/org/app,version=v1.0.0
To support this UX the OCI Image Format contains sufficient information to launch the application on the target platform (e.g. command, arguments, environment variables, etc).
## FAQ
**Q: Why doesn't this project mention distribution?**
A: Distribution, for example using HTTP as both Docker v2.2 and AppC do today, is currently out of scope on the [OCI Scope Table](https://www.opencontainers.org/governance/oci-scope-table).
There has been [some discussion on the TOB mailing list](https://groups.google.com/a/opencontainers.org/d/msg/tob/A3JnmI-D-6Y/tLuptPDHAgAJ) to make distribution an optional layer, but this topic is a work in progress.
**Q: Why a new project?**
A: The [first OCI spec](https://github.com/opencontainers/runtime-spec) centered around defining the run side of a container.
This is generally seen to be an orthogonal concern to the shipping container component.
As practical examples of this separation you see many organizations separating these concerns into different teams and organizations: the Docker Distribution project and the Docker containerd project; Amazon ECS and Amazon EC2 Container Registry, etc.
**Q: Why work on this?**
A: We are seeing many independent implementations of container image handling including build systems, registries, and image analysis tools.
As an organization we would like to encourage this growth and bring people together to ensure a technically correct and open specification continues to evolve reflecting the OCI values.
**Q: What happens to AppC or Docker Image Formats?**
A: Existing formats can continue to be a proving ground for technologies, as needed.
The OCI Image Format project strives to provide a dependable open specification that can be shared between different tools and be evolved for years or decades of compatibility; as the deb and rpm format have.
## Roadmap
The [GitHub milestones](https://github.com/opencontainers/image-spec/milestones) lay out the path to the OCI v1.0.0 release in late 2016.
# Contributing
Development happens on GitHub for the spec.
Issues are used for bugs and actionable items and longer discussions can happen on the [mailing list](#mailing-list).
The specification and code is licensed under the Apache 2.0 license found in the `LICENSE` file of this repository.
## Discuss your design
The project welcomes submissions, but please let everyone know what you are working on.
Before undertaking a nontrivial change to this specification, send mail to the [mailing list](#mailing-list) to discuss what you plan to do.
This gives everyone a chance to validate the design, helps prevent duplication of effort, and ensures that the idea fits.
It also guarantees that the design is sound before code is written; a GitHub pull-request is not the place for high-level discussions.
Typos and grammatical errors can go straight to a pull-request.
When in doubt, start on the [mailing-list](#mailing-list).
## Weekly Call
The contributors and maintainers of all OCI projects have a weekly meeting Wednesdays at 2:00 PM (USA Pacific).
Everyone is welcome to participate via [UberConference web][UberConference] or audio-only: +1-415-968-0849 (no PIN needed).
An initial agenda will be posted to the [mailing list](#mailing-list) earlier in the week, and everyone is welcome to propose additional topics or suggest other agenda alterations there.
Minutes are posted to the [mailing list](#mailing-list) and minutes from past calls are archived to the [wiki](https://github.com/opencontainers/runtime-spec/wiki) for those who are unable to join the call.
## Mailing List
You can subscribe and join the mailing list on [Google Groups](https://groups.google.com/a/opencontainers.org/forum/#!forum/dev).
## IRC
OCI discussion happens on #opencontainers on Freenode ([logs][irc-logs]).
## Markdown style
To keep consistency throughout the Markdown files in the Open Container spec all files should be formatted one sentence per line.
This fixes two things: it makes diffing easier with git and it resolves fights about line wrapping length.
For example, this paragraph will span three lines in the Markdown source.
## Git commit
### Sign your work
The sign-off is a simple line at the end of the explanation for the patch, which certifies that you wrote it or otherwise have the right to pass it on as an open-source patch.
The rules are pretty simple: if you can certify the below (from [developercertificate.org](http://developercertificate.org/)):
```
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
```
then you just add a line to every git commit message:
Signed-off-by: Joe Smith <joe@gmail.com>
using your real name (sorry, no pseudonyms or anonymous contributions.)
You can add the sign off when creating the git commit via `git commit -s`.
### Commit Style
Simple house-keeping for clean git history.
Read more on [How to Write a Git Commit Message](http://chris.beams.io/posts/git-commit/) or the Discussion section of [`git-commit(1)`](http://git-scm.com/docs/git-commit).
1. Separate the subject from body with a blank line
2. Limit the subject line to 50 characters
3. Capitalize the subject line
4. Do not end the subject line with a period
5. Use the imperative mood in the subject line
6. Wrap the body at 72 characters
7. Use the body to explain what and why vs. how
* If there was important/useful/essential conversation or information, copy or include a reference
8. When possible, one keyword to scope the change in the subject (i.e. "README: ...", "runtime: ...")
[UberConference]: https://www.uberconference.com/opencontainers
[irc-logs]: http://ircbot.wl.linuxfoundation.org/eavesdrop/%23opencontainers/

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# Releases
The release process hopes to encourage early, consistent consensus-building during project development.
The mechanisms used are regular community communication on the mailing list about progress, scheduled meetings for issue resolution and release triage, and regularly paced and communicated releases.
Releases are proposed and adopted or rejected using the usual [project governance](GOVERNANCE.md) rules and procedures.
An anti-pattern that we want to avoid is heavy development or discussions "late cycle" around major releases.
We want to build a community that is involved and communicates consistently through all releases instead of relying on "silent periods" as a judge of stability.
## Parallel releases
A single project MAY consider several motions to release in parallel.
However each motion to release after the initial 0.1.0 MUST be based on a previous release that has already landed.
For example, runtime-spec maintainers may propose a v1.0.0-rc2 on the 1st of the month and a v0.9.1 bugfix on the 2nd of the month.
They may not propose a v1.0.0-rc3 until the v1.0.0-rc2 is accepted (on the 7th if the vote initiated on the 1st passes).
## Specifications
The OCI maintains three categories of projects: specifications, applications, and conformance-testing tools.
However, specification releases have special restrictions in the [OCI charter][charter]:
* They are the target of backwards compatibility (§7.g), and
* They are subject to the OFWa patent grant (§8.d and e).
To avoid unfortunate side effects (onerous backwards compatibity requirements or Member resignations), the following additional procedures apply to specification releases:
### Planning a release
Every OCI specification project SHOULD hold meetings that involve maintainers reviewing pull requests, debating outstanding issues, and planning releases.
This meeting MUST be advertised on the project README and MAY happen on a phone call, video conference, or on IRC.
Maintainers MUST send updates to the dev@opencontainers.org with results of these meetings.
Before the specification reaches v1.0.0, the meetings SHOULD be weekly.
Once a specification has reached v1.0.0, the maintainers may alter the cadence, but a meeting MUST be held within four weeks of the previous meeting.
The release plans, corresponding milestones and estimated due dates MUST be published on GitHub (e.g. https://github.com/opencontainers/runtime-spec/milestones).
GitHub milestones and issues are only used for community organization and all releases MUST follow the [project governance](GOVERNANCE.md) rules and procedures.
### Timelines
Specifications have a variety of different timelines in their lifecycle.
* Pre-v1.0.0 specifications SHOULD release on a monthly cadence to garner feedback.
* Major specification releases MUST release at least three release candidates spaced a minimum of one week apart.
This means a major release like a v1.0.0 or v2.0.0 release will take 1 month at minimum: one week for rc1, one week for rc2, one week for rc3, and one week for the major release itself.
Maintainers SHOULD strive to make zero breaking changes during this cycle of release candidates and SHOULD restart the three-candidate count when a breaking change is introduced.
For example if a breaking change is introduced in v1.0.0-rc2 then the series would end with v1.0.0-rc4 and v1.0.0.
- Minor and patch releases SHOULD be made on an as-needed basis.
[charter]: https://www.opencontainers.org/about/governance

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# Canonicalization
OCI Images [are](descriptor.md) [content-addressable](image-layout.md).
One benefit of content-addressable storage is easy deduplication.
Many images might depend on a particular [layer](layer.md), but there will only be one blob in the [store](image-layout.md).
With a different serialization, that same semantic layer would have a different hash, and if both versions of the layer are referenced there will be two blobs with the same semantic content.
To allow efficient storage, implementations serializing content for blobs SHOULD use a canonical serialization.
This increases the chance that different implementations can push the same semantic content to the store without creating redundant blobs.
## JSON
[JSON][] content SHOULD be serialized as [canonical JSON][canonical-json].
Of the [OCI Image Format Specification media types](media-types.md), all the types ending in `+json` contain JSON content.
Implementations:
* [Go][]: [github.com/docker/go][], which claims to implement [canonical JSON][canonical-json] except for Unicode normalization.
[canonical-json]: http://wiki.laptop.org/go/Canonical_JSON
[github.com/docker/go]: https://github.com/docker/go/
[Go]: https://golang.org/
[JSON]: http://json.org/

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# OCI Image Configuration
An OCI *Image* is an ordered collection of root filesystem changes and the corresponding execution parameters for use within a container runtime.
This specification outlines the JSON format describing images for use with a container runtime and execution tool and its relationship to filesystem changesets, described in [Layers](layer.md).
This section defines the `application/vnd.oci.image.config.v1+json` [media type](media-types.md).
## Terminology
This specification uses the following terms:
### [Layer](layer.md)
Image filesystems are composed of *layers*.
Each layer represents a set of filesystem changes in a tar-based [layer format](layer.md), recording files to be added, changed, or deleted relative to its parent layer.
Layers do not have configuration metadata such as environment variables or default arguments - these are properties of the image as a whole rather than any particular layer.
Using a layer-based or union filesystem such as AUFS, or by computing the diff from filesystem snapshots, the filesystem changeset can be used to present a series of image layers as if they were one cohesive filesystem.
### Image JSON
Each image has an associated JSON structure which describes some basic information about the image such as date created, author, as well as execution/runtime configuration like its entrypoint, default arguments, CPU/memory shares, networking, and volumes.
The JSON structure also references a cryptographic hash of each layer used by the image, and provides history information for those layers.
This JSON is considered to be immutable, because changing it would change the computed [ImageID](#imageid).
Changing it means creating a new derived image, instead of changing the existing image.
### Layer DiffID
A layer DiffID is a SHA256 digest over the layer's uncompressed tar archive and serialized in the descriptor digest format, e.g., `sha256:a9561eb1b190625c9adb5a9513e72c4dedafc1cb2d4c5236c9a6957ec7dfd5a9`.
Layers must be packed and unpacked reproducibly to avoid changing the layer DiffID, for example by using tar-split to save the tar headers.
NOTE: the DiffID is different than the layer digest because it is taken over the uncompressed gzipped layer for `application/vnd.oci.image.layer.v1.tar+gzip` types.
### Layer ChainID
For convenience, it is sometimes useful to refer to a stack of layers with a single identifier.
This is called a `ChainID`.
For a single layer (or the layer at the bottom of a stack), the
`ChainID` is equal to the layer's `DiffID`.
Otherwise the `ChainID` is given by the formula:
`ChainID(layerN) = SHA256hex(ChainID(layerN-1) + " " + DiffID(layerN))`.
### ImageID
Each image's ID is given by the SHA256 hash of its [configuration JSON](#image-json).
It is represented as a hexadecimal encoding of 256 bits, e.g., `sha256:a9561eb1b190625c9adb5a9513e72c4dedafc1cb2d4c5236c9a6957ec7dfd5a9`.
Since the [configuration JSON](#image-json) that gets hashed references hashes of each layer in the image, this formulation of the ImageID makes images content-addresable.
## Properties
Note: Any OPTIONAL field MAY also be set to null, which is equivalent to being absent.
- **created** *string*, OPTIONAL
An ISO-8601 formatted combined date and time at which the image was created.
- **author** *string*, OPTIONAL
Gives the name and/or email address of the person or entity which created and is responsible for maintaining the image.
- **architecture** *string*, REQUIRED
The CPU architecture which the binaries in this image are built to run on.
Configurations SHOULD use, and implementations SHOULD understand, values [supported by runtime-spec's `platform.arch`][runtime-platform].
- **os** *string*, REQUIRED
The name of the operating system which the image is built to run on.
Configurations SHOULD use, and implementations SHOULD understand, values [supported by runtime-spec's `platform.os`][runtime-platform].
- **config** *object*, OPTIONAL
The execution parameters which should be used as a base when running a container using the image.
This field can be `null`, in which case any execution parameters should be specified at creation of the container.
- **User** *string*, OPTIONAL
The username or UID which is a platform-specific structure that allows specific control over which user the process run as.
This acts as a default value to use when the value is not specified when creating a container.
For Linux based systems, all of the following are valid: `user`, `uid`, `user:group`, `uid:gid`, `uid:group`, `user:gid`.
If `group`/`gid` is not specified, the default group and supplementary groups of the given `user`/`uid` in `/etc/passwd` from the container are applied.
- **Memory** *integer*, OPTIONAL
Memory limit (in bytes).
This acts as a default value to use when the value is not specified when creating a container.
- **MemorySwap** *integer*, OPTIONAL
MemorySwap is a platform-specific field to set total memory usage (memory + swap) for Linux based systems; set to `-1` to disable swap.
This acts as a default value to use when the value is not specified when creating a container.
- **CpuShares** *integer*, OPTIONAL
CPU shares (relative weight vs. other containers).
This acts as a default value to use when the value is not specified when creating a container.
- **ExposedPorts** *object*, OPTIONAL
A set of ports to expose from a container running this image.
Its keys can be in the format of:
`port/tcp`, `port/udp`, `port` with the default protocol being `tcp` if not specified.
These values act as defaults and are merged with any specified when creating a container.
**NOTE:** This JSON structure value is unusual because it is a direct JSON serialization of the Go type `map[string]struct{}` and is represented in JSON as an object mapping its keys to an empty object.
- **Env** *array of strings*, OPTIONAL
Entries are in the format of `VARNAME="var value"`.
These values act as defaults and are merged with any specified when creating a container.
- **Entrypoint** *array of strings*, OPTIONAL
A list of arguments to use as the command to execute when the container starts.
This value acts as a default and is replaced by an entrypoint specified when creating a container.
- **Cmd** *array of strings*, OPTIONAL
Default arguments to the entrypoint of the container.
These values act as defaults and are replaced with any specified when creating a container.
If an `Entrypoint` value is not specified, then the first entry of the `Cmd` array should be interpreted as the executable to run.
- **Volumes** *object*, OPTIONAL
A set of directories which should be created as data volumes in a container running this image.
If a file or folder exists within the image with the same path as a data volume, that file or folder is replaced with the data volume and is never merged.
**NOTE:** This JSON structure value is unusual because it is a direct JSON serialization of the Go type `map[string]struct{}` and is represented in JSON as an object mapping its keys to an empty object.
- **WorkingDir** *string*, OPTIONAL
Sets the current working directory of the entrypoint process in the container.
This value acts as a default and is replaced by a working directory specified when creating a container.
- **Labels** *object*, OPTIONAL
The field contains arbitrary metadata for the container.
Labels MUST be a key-value map where both the key and value MUST be strings.
Keys MUST be unique within this map, and best practice is to namespace the keys.
Keys SHOULD be named using a reverse domain notation - e.g. `com.example.myKey`.
Keys using the `org.opencontainers` namespace are reserved and MUST NOT be used by subsequent specifications.
If there are no labels then this property MAY either be absent or an empty map.
Implementations that are reading/processing this configuration file MUST NOT generate an error if they encounter an unknown labels key.
- **rootfs** *object*, REQUIRED
The rootfs key references the layer content addresses used by the image.
This makes the image config hash depend on the filesystem hash.
- **type** *string*, REQUIRED
MUST be set to `layers`.
Implementations MUST generate an error if they encounter a unknown value while verifying or unpacking an image.
- **diff_ids** *array of strings*, REQUIRED
An array of layer content hashes (`DiffIDs`), in order from first to last.
- **history** *array of objects*, OPTIONAL
Describes the history of each layer.
The array is ordered from first to last.
The object has the following fields:
- **created** *string*, OPTIONAL
Creation time, expressed as an ISO-8601 formatted combined date and time.
- **author** *string*, OPTIONAL
The author of the build point.
- **created_by** *string*, OPTIONAL
The command which created the layer.
- **comment** *string*, OPTIONAL
A custom message set when creating the layer.
- **empty_layer** *boolean*, OPTIONAL
This field is used to mark if the history item created a filesystem diff.
It is set to true if this history item doesn't correspond to an actual layer in the rootfs section (for example, Dockerfile's [ENV](https://docs.docker.com/engine/reference/builder/#/env) command results in no change to the filesystem).
Any extra fields in the Image JSON struct are considered implementation specific and should be ignored by any implementations which are unable to interpret them.
Whitespace is OPTIONAL and implementations MAY have compact JSON with no whitespace.
## Example
Here is an example image configuration JSON document:
```json,title=Image%20JSON&mediatype=application/vnd.oci.image.config.v1%2Bjson
{
"created": "2015-10-31T22:22:56.015925234Z",
"author": "Alyssa P. Hacker <alyspdev@example.com>",
"architecture": "amd64",
"os": "linux",
"config": {
"User": "alice",
"Memory": 2048,
"MemorySwap": 4096,
"CpuShares": 8,
"ExposedPorts": {
"8080/tcp": {}
},
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"FOO=oci_is_a",
"BAR=well_written_spec"
],
"Entrypoint": [
"/bin/my-app-binary"
],
"Cmd": [
"--foreground",
"--config",
"/etc/my-app.d/default.cfg"
],
"Volumes": {
"/var/job-result-data": {},
"/var/log/my-app-logs": {}
},
"WorkingDir": "/home/alice",
"Labels": {
"com.example.project.git.url": "https://example.com/project.git",
"com.example.project.git.commit": "45a939b2999782a3f005621a8d0f29aa387e1d6b"
}
},
"rootfs": {
"diff_ids": [
"sha256:c6f988f4874bb0add23a778f753c65efe992244e148a1d2ec2a8b664fb66bbd1",
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
},
"history": [
{
"created": "2015-10-31T22:22:54.690851953Z",
"created_by": "/bin/sh -c #(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"
},
{
"created": "2015-10-31T22:22:55.613815829Z",
"created_by": "/bin/sh -c #(nop) CMD [\"sh\"]",
"empty_layer": true
}
]
}
```
[runtime-platform]: https://github.com/opencontainers/runtime-spec/blob/v1.0.0-rc2/config.md#platform

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# OCI Content Descriptors
An OCI image consists of several different components, arranged in a [Merkle Directed Acyclic Graph (DAG)](https://en.wikipedia.org/wiki/Merkle_tree).
References between components in the graph are expressed through _Content Descriptors_.
A Content Descriptor (or simply _Descriptor_) describes the disposition of the targeted content.
A Content Descriptor includes the type of the content, a content identifier (_digest_), and the byte-size of the raw content.
Descriptors SHOULD be embedded in other formats to securely reference external content.
Other formats SHOULD use descriptors to securely reference external content.
This section defines the `application/vnd.oci.descriptor.v1+json` [media type](media-types.md).
## Properties
A descriptor consists of a set of properties encapsulated in key-value fields.
The following fields contain the primary properties that constitute a Descriptor:
- **`mediaType`** *string*
This REQUIRED property contains the MIME type of the referenced content.
The OCI image specification defines [several of its own MIME types](media-types.md) for resources defined in the specification.
- **`digest`** *string*
This REQUIRED property is the _digest_ of the targeted content, conforming to the requirements outlined in [Digests and Verification](#digests-and-verification).
Retrieved content SHOULD be verified against this digest when consumed via untrusted sources.
- **`size`** *int64*
This REQUIRED property specifies the size, in bytes, of the raw content.
This property exists so that a client will have an expected size for the content before processing.
If the length of the retrieved content does not match the specified length, the content SHOULD NOT be trusted.
- **`urls`** *array of strings*
This OPTIONAL property specifies a list of URIs from which this object MAY be downloaded.
Each entry MUST conform to [RFC 3986][rfc3986].
Entries SHOULD use the `http` and `https` schemes, as defined in [RFC 7230][rfc7230-s2.7].
### Reserved
The following field keys are reserved and MUST NOT be used by other specifications.
- **`data`** *string*
This key is RESERVED for future versions of the specification.
All other fields may be included in other OCI specifications.
Extended _Descriptor_ field additions proposed in other OCI specifications SHOULD first be considered for addition into this specification.
## Digests and Verification
The _digest_ property of a Descriptor acts as a content identifier, enabling [content addressability](http://en.wikipedia.org/wiki/Content-addressable_storage).
It uniquely identifies content by taking a [collision-resistant hash](https://en.wikipedia.org/wiki/Cryptographic_hash_function) of the bytes.
If the identifier can be communicated in a secure manner, one can retrieve the content from an insecure source, calculate the digest independently, and be certain that the correct content was obtained.
The value of the digest property, the _digest string_, is a serialized hash result, consisting of an _algorithm_ portion and a _hex_ portion.
The algorithm identifies the methodology used to calculate the digest; the hex portion is the lowercase hex-encoded result of the hash.
The digest string MUST match the following grammar:
```
digest := algorithm ":" hex
algorithm := /[a-z0-9_+.-]+/
hex := /[a-f0-9]+/
```
Some example digest strings include the following:
digest | description |
----------------------------------------------------------------------------------|------------------------------------------------
sha256:6c3c624b58dbbcd3c0dd82b4c53f04194d1247c6eebdaab7c610cf7d66709b3b | Common sha256 based digest |
Before consuming content targeted by a descriptor from untrusted sources, the byte content SHOULD be verified against the digest.
Before calculating the digest, the size of the content SHOULD be verified to reduce hash collision space.
Heavy processing before calculating a hash SHOULD be avoided.
Implementations MAY employ some canonicalization of the underlying content to ensure stable content identifiers.
### Algorithms
While the _algorithm_ component of the digest does allow one to utilize a wide variety of algorithms, compliant implementations SHOULD use [SHA-256](#sha-256).
Let's use a simple example in pseudo-code to demonstrate a digest calculation:
A _digest_ is calculated by the following pseudo-code, where `H` is the selected hash algorithm, identified by string `<alg>`:
```
let ID(C) = Descriptor.digest
let C = <bytes>
let D = '<alg>:' + EncodeHex(H(C))
let verified = ID(C) == D
```
Above, we define the content identifier as `ID(C)`, extracted from the `Descriptor.digest` field.
Content `C` is a string of bytes.
Function `H` returns the hash of `C` in bytes and is passed to function `EncodeHex` to obtain the _digest_.
The result `verified` is true if `ID(C)` is equal to `D`, confirming that `C` is the content identified by `D`.
After verification, the following is true:
```
D == ID(C) == '<alg>:' + EncodeHex(H(C))
```
The _digest_ is confirmed as the content identifier by independently calculating the _digest_.
#### SHA-256
[SHA-256](https://tools.ietf.org/html/rfc4634#page-7) is a collision-resistant hash function, chosen for ubiquity, reasonable size and secure characteristics.
Implementations MUST implement SHA-256 digest verification for use in descriptors.
## Examples
The following example describes a [_Manifest_](manifest.md#image-manifest) with a content identifier of "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270" and a size of 7682 bytes:
```json,title=Content%20Descriptor&mediatype=application/vnd.oci.descriptor.v1%2Bjson
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 7682,
"digest": "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270"
}
```
[rfc3986]: https://tools.ietf.org/html/rfc3986
[rfc7230-s2.7]: https://tools.ietf.org/html/rfc7230#section-2.7

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hash: 61c12670baff1b8a58d601c5afeae07ac831ef85cb67de3d4823ccdbb0085f56
updated: 2016-09-21T13:59:32.039338003-07:00
imports:
- name: github.com/pkg/errors
version: 17b591df37844cde689f4d5813e5cea0927d8dd2
- name: github.com/russross/blackfriday
version: 0b647d0506a698cca42caca173e55559b12a69f2
- name: github.com/shurcooL/sanitized_anchor_name
version: 10ef21a441db47d8b13ebcc5fd2310f636973c77
- name: github.com/xeipuuv/gojsonpointer
version: e0fe6f68307607d540ed8eac07a342c33fa1b54a
- name: github.com/xeipuuv/gojsonreference
version: e02fc20de94c78484cd5ffb007f8af96be030a45
- name: github.com/xeipuuv/gojsonschema
version: d5336c75940ef31c9ceeb0ae64cf92944bccb4ee
- name: go4.org
version: 27882e489dcd7ade28c033b82c6d498661c4dc42
subpackages:
- errorutil
testImports: []

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package: github.com/opencontainers/image-spec
import:
- package: github.com/pkg/errors
version: ">=0.7.0"
- package: github.com/xeipuuv/gojsonschema
version: d5336c75940ef31c9ceeb0ae64cf92944bccb4ee
- package: github.com/russross/blackfriday
version: ~v1.4
- package: github.com/shurcooL/sanitized_anchor_name
version: 10ef21a441db47d8b13ebcc5fd2310f636973c77

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## OCI Image Layout Specification
The OCI Image Layout is a slash separated layout of OCI content-addressable blobs and [location-addressable](https://en.wikipedia.org/wiki/Content-addressable_storage#Content-addressed_vs._location-addressed) references (refs).
This layout MAY be used in a variety of different transport mechanisms: archive formats (e.g. tar, zip), shared filesystem environments (e.g. nfs), or networked file fetching (e.g. http, ftp, rsync).
Given an image layout and a ref, a tool can create an [OCI Runtime Specification bundle](https://github.com/opencontainers/runtime-spec/blob/v1.0.0-rc2/bundle.md) by:
* Following the ref to find a [manifest](manifest.md#image-manifest), possibly via a [manifest list](manifest-list.md#manifest-list)
* [Applying the filesystem layers](layer.md#applying) in the specified order
* Converting the [image configuration](config.md) into an [OCI Runtime Specification `config.json`](https://github.com/opencontainers/runtime-spec/blob/v1.0.0-rc2/config.md)
The image layout MUST contain two top level directories:
- `blobs` contains content-addressable blobs.
A blob has no schema and should be considered opaque.
- `refs` contains [descriptors][descriptors].
Commonly pointing to an [image manifest](manifest.md#image-manifest) or an [image manifest list](manifest-list.md#oci-image-manifest-list-specification).
Both `blobs` and `refs` MAY be empty.
The image layout MUST also contain a file that is used to identify the layout version:
- `oci-layout` MUST contain a JSON object with a version field `{"imageLayoutVersion": "1.0.0"}` and MAY include additional fields.
This is an example image layout:
```
$ cd example.com/app/
$ find .
.
./blobs
./blobs/sha256/e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f
./blobs/sha256/afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51
./blobs/sha256/5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270
./blobs/sha256/e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f
./oci-layout
./refs
./refs/v1.0
./refs/stable-release
```
Blobs are named by their contents:
```
$ shasum -a 256 ./blobs/sha256/afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51
afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51 ./blobs/sha256/afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51
```
Object names in the `refs` subdirectories MUST NOT include characters outside of the set of "A" to "Z", "a" to "z", "0" to "9", the hyphen `-`, the dot `.`, and the underscore `_`.
Object names in the `blobs` subdirectories are composed of a directory for each hash algorithm, the children of which will contain the actual content.
A blob, referenced with digest `<alg>:<hex>` (per [descriptor](descriptor.md#digests-and-verification)), MUST have its content stored in a file under `blobs/<alg>/<hex>`.
The character set of the entry name for `<hex>` and `<alg>` MUST match the respective grammar elements described in [descriptor](descriptor.md#digests-and-verification).
For example `sha256:5b` will map to the layout `blobs/sha256/5b`.
The blobs directory MAY contain blobs which are not referenced by any of the refs.
The blobs directory MAY be missing referenced blobs, in which case the missing blobs SHOULD be fulfilled by an external blob store.
No semantic restriction is given for object names in the `refs` subdirectory.
Each object in the `refs` subdirectory MUST be of type `application/vnd.oci.descriptor.v1+json`.
In general the `mediatype` of this [descriptor][descriptors] object will be either `application/vnd.oci.image.manifest.list.v1+json` or `application/vnd.oci.image.manifest.v1+json` although future versions of the spec MAY use a different mediatype.
**Implementor's Note:**
A common use case of refs is representing "tags" for a container image.
For example, an image may have a tag for different versions or builds of the software.
In the wild you often see "tags" like "v1.0.0-vendor.0", "2.0.0-debug", etc.
Those tags will often be represented in an image-layout repository with matching refs names like "v1.0.0-vendor.0", "2.0.0-debug", etc.
This illustrates the expected contents of a given ref, the manifest list it points to and the blobs the manifest references.
```
$ cat ./refs/v1.0 | jq
{
"size": 4096,
"digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
"mediaType": "application/vnd.oci.image.manifest.list.v1+json"
}
```
```
$ cat ./blobs/sha256/e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f | jq
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.list.v1+json",
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 7143,
"digest": "sha256:afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51",
"platform": {
"architecture": "ppc64le",
"os": "linux"
}
},
...
```
```
$ cat ./blobs/sha256/afff3924849e458c5ef237db5f89539274d5e609db5db935ed3959c90f1f2d51 | jq
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": [
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 7023,
"digest": "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270"
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 32654,
"digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f"
},
...
```
```
$ cat ./blobs/sha256/5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270
{"architecture":"amd64","author":"Antonio Murdaca \u003eruncom@redhat.com\u003e","config":{"Hostname":"8dfe43d80430","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":null,"Image":"sha256:6986ae504bbf843512d680cc959484452034965db15f75ee8bdd1b107f61500b",
...
```
```
$ cat ./blobs/sha256/e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f
[tar stream]
```
[descriptors]: ./descriptor.md

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digraph G {
{
manifestList [shape=note, label="Manifest list\n<<optional>>\napplication/vnd.oci.image.manifest.list.v1+json"]
manifest [shape=note, label="Image manifest\napplication/vnd.oci.image.manifest.v1+json"]
config [shape=note, label="Image JSON\napplication/vnd.oci.image.config.v1+json"]
layer [shape=note, label="Layer tar+gzip\napplication/vnd.oci.image.layer.v1.tar+gzip\napplication/vnd.oci.image.layer.nondistributable.v1.tar+gzip"]
}
manifestList -> manifest [label="1..*"]
manifest -> config [label="1..1"]
manifest -> layer [label="1..*"]
}

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# Image Layer Filesystem Changeset
This document describes how to serialize a filesystem and filesystem changes like removed files into a blob called a layer.
One or more layers are applied on top of each other to create a complete filesystem.
This document will use a concrete example to illustrate how to create and consume these filesystem layers.
This section defines the `application/vnd.oci.image.layer.v1.tar+gzip` and `application/vnd.oci.image.layer.nondistributable.v1.tar+gzip` [media types](media-types.md).
## Distributable Format
Layer Changesets for the [mediatype](./media-types.md) `application/vnd.oci.image.layer.v1.tar+gzip` MUST be packaged in a [tar archive][tar-archive] compressed with [gzip][gzip].
Layer Changesets for the [mediatype](./media-types.md) `application/vnd.oci.image.layer.v1.tar+gzip` MUST NOT include duplicate entries for file paths in the resulting [tar archive][tar-archive].
## Change Types
Types of changes that can occur in a changeset are:
* Additions
* Modifications
* Removals
Additions and Modifications are represented the same in the changeset tar archive.
Removals are represented using "[whiteout](#whiteouts)" file entries (See [Representing Changes](#representing-changes)).
### File Types
Throughout this document section, the use of word "files" or "entries" includes:
* regular files
* directories
* sockets
* symbolic links
* block devices
* character devices
* FIFOs
### File Attributes
Where supported, MUST include file attributes for Additions and Modifications include:
* Modification Time (`mtime`)
* User ID (`uid`)
* User Name (`uname`) *secondary to `uid`*
* Group ID (`gid `)
* Group Name (`gname`) *secondary to `gid`*
* Mode (`mode`)
* Extended Attributes (`xattrs`)
* Symlink reference (`linkname` + symbolic link type)
* [Hardlink](#hardlinks) reference (`linkname`)
[Sparse files](https://en.wikipedia.org/wiki/Sparse_file) SHOULD NOT be used because they lack consistent support across tar implementations.
#### Hardlinks
Hardlinks are a [POSIX concept](http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html) for having one or more directory entries for the same file on the same device.
Not all filesystems support hardlinks (e.g. [FAT](https://en.wikipedia.org/wiki/File_Allocation_Table)).
Hardlinks are possible with all [file types](#file-types) except `directories`.
Non-directory files are considered "hardlinked" when their link count is greater than 1.
Hardlinked files are on a same device (i.e. comparing Major:Minor pair) and have the same inode.
The corresponding files that share the link with the > 1 linkcount may be outside the directory that the changeset is being produced from, in which case the `linkname` is not recorded in the changeset.
Hardlinks are stored in a tar archive with type of a `1` char, per the [GNU Basic Tar Format][gnu-tar-standard] and [libarchive tar(5)][libarchive-tar].
While approaches to deriving new or changed hardlinks may vary, a possible approach is:
```
SET LinkMap to map[< Major:Minor String >]map[< inode integer >]< path string >
SET LinkNames to map[< src path string >]< dest path string >
FOR each path in root path
IF path type is directory
CONTINUE
ENDIF
SET filestat to stat(path)
IF filestat num of links == 1
CONTINUE
ENDIF
IF LinkMap[filestat device][filestat inode] is not empty
SET LinkNames[path] to LinkMap[filestat device][filestat inode]
ELSE
SET LinkMap[filestat device][filestat inode] to path
ENDIF
END FOR
```
With this approach, the link map and links names of a directory could be compared against that of another directory to derive additions and changes to hardlinks.
## Creating
### Initial Root Filesystem
The initial root filesystem is the base or parent layer.
For this example, an image root filesystem has an initial state as an empty directory.
The name of the directory is not relevant to the layer itself, only for the purpose of producing comparisons.
Here is an initial empty directory structure for a changeset, with a unique directory name `rootfs-c9d-v1`.
```
rootfs-c9d-v1/
```
### Populate Initial Filesystem
Files and directories are then created:
```
rootfs-c9d-v1/
etc/
my-app-config
bin/
my-app-binary
my-app-tools
```
The `rootfs-c9d-v1` directory is then created as a plain [tar archive][tar-archive] with relative path to `rootfs-c9d-v1`.
Entries for the following files:
```
./
./etc/
./etc/my-app-config
./bin/
./bin/my-app-binary
./bin/my-app-tools
```
### Populate a Comparison Filesystem
Create a new directory and initialize it with a copy or snapshot of the prior root filesystem.
Example commands that can preserve [file attributes](#file-attributes) to make this copy are:
* [cp(1)](http://linux.die.net/man/1/cp): `cp -a rootfs-c9d-v1/ rootfs-c9d-v1.s1/`
* [rsync(1)](http://linux.die.net/man/1/rsync): `rsync -aHAX rootfs-c9d-v1/ rootfs-c9d-v1.s1/`
* [tar(1)](http://linux.die.net/man/1/tar): `mkdir rootfs-c9d-v1.s1 && tar --acls --xattrs -C rootfs-c9d-v1/ -c . | tar -C rootfs-c9d-v1.s1/ --acls --xattrs -x` (including `--selinux` where supported)
Any [changes](#change-types) to the snapshot MUST NOT change or affect the directory it was copied from.
For example `rootfs-c9d-v1.s1` is an identical snapshot of `rootfs-c9d-v1`.
In this way `rootfs-c9d-v1.s1` is prepared for updates and alterations.
**Implementor's Note**: *a copy-on-write or union filesystem can efficiently make directory snapshots*
Initial layout of the snapshot:
```
rootfs-c9d-v1.s1/
etc/
my-app-config
bin/
my-app-binary
my-app-tools
```
See [Change Types](#change-types) for more details on changes.
For example, add a directory at `/etc/my-app.d` containing a default config file, removing the existing config file.
Also a change (in attribute or file content) to `./bin/my-app-tools` binary to handle the config layout change.
Following these changes, the representation of the `rootfs-c9d-v1.s1` directory:
```
rootfs-c9d-v1.s1/
etc/
my-app.d/
default.cfg
bin/
my-app-binary
my-app-tools
```
### Determining Changes
When two directories are compared, the relative root is the top-level directory.
The directories are compared, looking for files that have been [added, modified, or removed](#change-types).
For this example, `rootfs-c9d-v1/` and `rootfs-c9d-v1.s1/` are recursively compared, each as relative root path.
The following changeset is found:
```
Added: /etc/my-app.d/
Added: /etc/my-app.d/default.cfg
Modified: /bin/my-app-tools
Deleted: /etc/my-app-config
```
This reflects the removal of `/etc/my-app-config` and creation of a file and directory at `/etc/my-app.d/default.cfg`.
`/bin/my-app-tools` has also been replaced with an updated version.
### Representing Changes
A [tar archive][tar-archive] is then created which contains *only* this changeset:
- Added and modified files and directories in their entirety
- Deleted files or directories marked with a [whiteout file](#whiteouts)
The resulting tar archive for `rootfs-c9d-v1.s1` has the following entries:
```
./etc/my-app.d/
./etc/my-app.d/default.cfg
./bin/my-app-tools
./etc/.wh.my-app-config
```
To signify that the resource `./etc/my-app-config` MUST be removed when the changeset is applied, the basename of the entry is prefixed with `.wh.`.
## Applying Changesets
Layer Changesets of [mediatype](./media-types.md) `application/vnd.oci.image.layer.v1.tar+gzip` are _applied_, rather than simply extracted as tar archives.
Applying a layer changeset requires special consideration for the [whiteout](#whiteouts) files.
In the absence of any [whiteout](#whiteouts) files in a layer changeset, the archive is extracted like a regular tar archive.
### Changeset over existing files
This section specifies applying an entry from a layer changeset if the target path already exists.
If the entry and the existing path are both directories, then the existing path's attributes MUST be replaced by those of the entry in the changeset.
In all other cases, the implementation MUST do the semantic equivalent of the following:
- removing the file path (e.g. [`unlink(2)`](http://linux.die.net/man/2/unlink) on Linux systems)
- recreating the file path, based on the contents and attributes of the changeset entry
## Whiteouts
A whiteout file is an empty file with a special filename that signifies a path should be deleted.
A whiteout filename consists of the prefix `.wh.` plus the basename of the path to be deleted.
As files prefixed with `.wh.` are special whiteout markers, it is not possible to create a filesystem which has a file or directory with a name beginning with `.wh.`.
Once a whiteout is applied, the whiteout itself MUST also be hidden.
Whiteout files MUST only apply to resources in lower/parent layers.
Files that are present in the same layer as a whiteout file can only be hidden by whiteout files in subsequent layers.
The following is a base layer with several resources:
```
a/
a/b/
a/b/c/
a/b/c/bar
```
When the next layer is created, the original `a/b` directory is deleted and recreated with `a/b/c/foo`:
```
a/
a/.wh..wh..opq
a/b/
a/b/c/
a/b/c/foo
```
When processing the second layer, `a/.wh..wh..opq` is applied first, before creating the new version of `a/b`, regardless of the ordering in which the whiteout file was encountered.
For example, the following layer is equivalent to the layer above:
```
a/
a/b/
a/b/c/
a/b/c/foo
a/.wh..wh..opq
```
Implementations SHOULD generate layers such that the whiteout files appear before sibling directory entries.
### Opaque Whiteout
In addition to expressing that a single entry should be removed from a lower layer, layers may remove all of the children using an opaque whiteout entry.
An opaque whiteout entry is a file with the name `.wh..wh..opq` indicating that all siblings are hidden in the lower layer.
Let's take the following base layer as an example:
```
etc/
my-app-config
bin/
my-app-binary
my-app-tools
tools/
my-app-tool-one
```
If all children of `bin/` are removed, the next layer would have the following:
```
bin/
.wh..wh..opq
```
This is called _opaque whiteout_ format.
An _opaque whiteout_ file hides _all_ children of the `bin/` including sub-directories and all descendants.
Using _explicit whiteout_ files, this would be equivalent to the following:
```
bin/
.wh.my-app-binary
.wh.my-app-tools
.wh.tools
```
In this case, a unique whiteout file is generated for each entry.
If there were more children of `bin/` in the base layer, there would be an entry for each.
Note that this opaque file will apply to _all_ children, including sub-directories, other resources and all descendants.
Implementations SHOULD generate layers using _explicit whiteout_ files, but MUST accept both.
Any given image is likely to be composed of several of these Image Filesystem Changeset tar archives.
# Non-Distributable Layers
Certain layers, due to legal requirements, may not be regularly distributable.
Typically, such layers are downloaded directly from a distributor but are never uploaded.
Layers that have these restrictions SHOULD be tagged with an alternative mediatype of `application/vnd.oci.image.layer.nondistributable.v1.tar+gzip`.
[Descriptors](descriptor.md) referencing these layers MAY include `urls` for downloading these layers.
It is implementation-defined whether or not implementations upload layers tagged with this media type.
[libarchive-tar]: https://github.com/libarchive/libarchive/wiki/ManPageTar5#POSIX_ustar_Archives
[gnu-tar-standard]: http://www.gnu.org/software/tar/manual/html_node/Standard.html
[tar-archive]: https://en.wikipedia.org/wiki/Tar_(computing)
[gzip]: http://www.zlib.org/rfc-gzip.html

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# OCI Image Manifest List Specification
The manifest list is a higher-level manifest which points to specific [image manifests](manifest.md) for one or more platforms.
While the use of a manifest list is OPTIONAL for image providers, image consumers SHOULD be prepared to process them.
This section defines the `application/vnd.oci.image.manifest.list.v1+json` [media type](media-types.md).
## *Manifest List* Property Descriptions
- **`schemaVersion`** *int*
This REQUIRED property specifies the image manifest schema version.
For this version of the specification, this MUST be `2` to ensure backward compatibility with older versions of Docker. The value of this field will not change. This field MAY be removed in a future version of the specification.
- **`mediaType`** *string*
This REQUIRED property contains the media type of the manifest list.
For this version of the specification, this MUST be set to `application/vnd.oci.image.manifest.list.v1+json`.
For the media type(s) that this is compatible with, see the [matrix](media-types.md#compatibility-matrix).
- **`manifests`** *array of objects*
This REQUIRED property contains a list of manifests for specific platforms.
While the property MUST be present, the size of the array MAY be zero.
Each object in `manifests` is a [descriptor](descriptor.md) with the following additional properties and restrictions:
- **`mediaType`** *string*
This [descriptor property](descriptor.md#properties) has additional restrictions for `manifests`.
Implementations MUST support at least the following media types:
- [`application/vnd.oci.image.manifest.v1+json`](manifest.md)
Manifest lists concerned with portability SHOULD use one of the above media types.
- **`platform`** *object*
This REQUIRED property describes the platform which the image in the manifest runs on.
- **`architecture`** *string*
This REQUIRED property specifies the CPU architecture.
Manifest lists SHOULD use, and implementations SHOULD understand, values [supported by runtime-spec's `platform.arch`][runtime-platform2].
- **`os`** *string*
This REQUIRED property specifies the operating system.
Manifest lists SHOULD use, and implementations SHOULD understand, values [supported by runtime-spec's `platform.os`][runtime-platform2].
- **`os.version`** *string*
This OPTIONAL property specifies the operating system version, for example `10.0.10586`.
- **`os.features`** *array of strings*
This OPTIONAL property specifies an array of strings, each specifying a mandatory OS feature (for example on Windows `win32k`).
- **`variant`** *string*
This OPTIONAL property specifies the variant of the CPU, for example `armv6l` to specify a particular CPU variant of the ARM CPU.
- **`features`** *array of strings*
This OPTIONAL property specifies an array of strings, each specifying a mandatory CPU feature (for example `sse4` or `aes`).
- **`annotations`** *string-string map*
This OPTIONAL property contains arbitrary metadata for the manifest list.
Annotations MUST be a key-value map where both the key and value MUST be strings.
While the value MUST be present, it MAY be an empty string.
Keys MUST be unique within this map, and best practice is to namespace the keys.
Keys SHOULD be named using a reverse domain notation - e.g. `com.example.myKey`.
Keys using the `org.opencontainers` namespace are reserved and MUST NOT be used by other specifications.
If there are no annotations then this property MUST either be absent or be an empty map.
Implementations that are reading/processing manifest lists MUST NOT generate an error if they encounter an unknown annotation key.
See [Pre-Defined Annotation Keys](manifest.md#pre-defined-annotation-keys).
### Extensibility
Implementations that are reading/processing manifest lists MUST NOT generate an error if they encounter an unknown property.
Instead they MUST ignore unknown properties.
## Example Manifest List
*Example showing a simple manifest list pointing to image manifests for two platforms:*
```json,title=Manifest%20List&mediatype=application/vnd.oci.image.manifest.list.v1%2Bjson
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.list.v1+json",
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 7143,
"digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
"platform": {
"architecture": "ppc64le",
"os": "linux"
}
},
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 7682,
"digest": "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270",
"platform": {
"architecture": "amd64",
"os": "linux",
"os.features": [
"sse4"
]
}
}
],
"annotations": {
"com.example.key1": "value1",
"com.example.key2": "value2"
}
}
```
[runtime-platform2]: https://github.com/opencontainers/runtime-spec/blob/v1.0.0-rc2/config.md#platform

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# OCI Image Manifest Specification
There are three main goals of the Image Manifest Specification.
The first goal is content-addressable images, by supporting an image model where the image's configuration can be hashed to generate a unique ID for the image and its components.
The second goal is to allow multi-architecture images, through a "fat manifest" which references image manifests for platform-specific versions of an image.
In OCI, this is codified in a [Manifest List](manifest-list.md).
The third goal is to be translatable to the [OCI Runtime Specification](https://github.com/opencontainers/runtime-spec).
This section defines the `application/vnd.oci.image.manifest.v1+json` [media type](media-types.md).
# Image Manifest
Unlike the [Manifest List](manifest-list.md), which contains information about a set of images that can span a variety of architectures and operating systems, an image manifest provides a configuration and set of layers for a single container image for a specific architecture and operating system.
## *Image Manifest* Property Descriptions
- **`schemaVersion`** *int*
This REQUIRED property specifies the image manifest schema version.
For this version of the specification, this MUST be `2` to ensure backward compatibility with older versions of Docker. The value of this field will not change. This field MAY be removed in a future version of the specification.
- **`mediaType`** *string*
This REQUIRED property contains the media type of the image manifest.
For this version of the specification, this MUST be set to `application/vnd.oci.image.manifest.v1+json`.
For the media type(s) that this is compatible with see the [matrix](media-types.md#compatibility-matrix).
- **`config`** *[descriptor](descriptor.md)*
This REQUIRED property references a configuration object for a container, by digest.
Beyond the [descriptor requirements](descriptor.md#properties), the value has the following additional restrictions:
- **`mediaType`** *string*
This [descriptor property](descriptor.md#properties) has additional restrictions for `config`.
Implementations MUST support at least the following media types:
- [`application/vnd.oci.image.config.v1+json`](config.md)
Manifests concerned with portability SHOULD use one of the above media types.
- **`layers`** *array of objects*
Each item in the array MUST be a [descriptor](descriptor.md).
The array MUST have the base layer at index 0.
Subsequent layers MUST then follow in stack order (i.e. from `layers[0]` to `layers[len(layers)-1]`).
The final filesystem layout MUST match the result of [applying](layer.md#applying) the layers to an empty directory.
The [ownership, mode, and other attributes](layer.md#file-attributes) of the initial empty directory are unspecified.
Beyond the [descriptor requirements](descriptor.md#properties), the value has the following additional restrictions:
- **`mediaType`** *string*
This [descriptor property](descriptor.md#properties) has additional restrictions for `layers[]`.
Implementations MUST support at least the following media types:
- [`application/vnd.oci.image.layer.v1.tar+gzip`](layer.md)
- [`application/vnd.oci.image.layer.nondistributable.v1.tar+gzip`](layer.md#non-distributable-layers)
Manifests concerned with portability SHOULD use one of the above media types.
- **`annotations`** *string-string map*
This OPTIONAL property contains arbitrary metadata for the image manifest.
Annotations MUST be a key-value map where both the key and value MUST be strings.
While the value MUST be present, it MAY be an empty string.
Keys MUST be unique within this map, and best practice is to namespace the keys.
Keys SHOULD be named using a reverse domain notation - e.g. `com.example.myKey`.
Keys using the `org.opencontainers` namespace are reserved and MUST NOT be used by other specifications.
If there are no annotations then this property MUST either be absent or be an empty map.
Implementations that are reading/processing the image manifest MUST NOT generate an error if they encounter an unknown annotation key.
See [Pre-Defined Annotation Keys](#pre-defined-annotation-keys).
### Extensibility
Implementations that are reading/processing image manifests MUST NOT generate an error if they encounter an unknown property.
Instead they MUST ignore unknown properties.
## Example Image Manifest
*Example showing an image manifest:*
```json,title=Manifest&mediatype=application/vnd.oci.image.manifest.v1%2Bjson
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 7023,
"digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7"
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 32654,
"digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f"
},
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 16724,
"digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
},
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 73109,
"digest": "sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736"
}
],
"annotations": {
"com.example.key1": "value1",
"com.example.key2": "value2"
}
}
```
# Pre-Defined Annotation Keys
This specification defines the following annotation keys, which MAY be used by manifest list and image manifest authors:
* **org.opencontainers.created** date on which the image was built (string, date-time as defined by [RFC 3339](https://tools.ietf.org/html/rfc3339#section-5.6)).
* **org.opencontainers.authors** contact details of the people or organization responsible for the image (freeform string)
* **org.opencontainers.homepage** URL to find more information on the image (string, must be a URL with scheme HTTP or HTTPS)
* **org.opencontainers.documentation** URL to get documentation on the image (string, must be a URL with scheme HTTP or HTTPS)

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# OCI Image Media Types
The following media types identify the formats described here and their referenced resources:
- `application/vnd.oci.descriptor.v1+json`: [Content Descriptor](descriptor.md)
- `application/vnd.oci.image.manifest.list.v1+json`: [Manifest list](manifest-list.md#manifest-list)
- `application/vnd.oci.image.manifest.v1+json`: [Image manifest](manifest.md#image-manifest)
- `application/vnd.oci.image.config.v1+json`: [Image config](config.md)
- `application/vnd.oci.image.layer.v1.tar+gzip`: ["Layer", as a gzipped tar archive](layer.md)
- `application/vnd.oci.image.layer.nondistributable.v1.tar+gzip`: ["Layer", as a gzipped tar archive with distribution restrictions](layer.md#non-distributable-layers)
## Media Type Conflicts
[Blob](image-layout.md) retrieval methods MAY return media type metadata.
For example, a HTTP response might return a manifest with the Content-Type header set to `application/vnd.oci.image.manifest.v1+json`.
Implementations MAY also have expectations for the blob's media type and digest (e.g. from a [descriptor](descriptor.md) referencing the blob).
* Implementations that do not have an expected media type for the blob SHOULD respect the returned media type.
* Implementations that have an expected media type which matches the returned media type SHOULD respect the matched media type.
* Implementations that have an expected media type which does not match the returned media type SHOULD:
* Respect the expected media type if the blob matches the expected digest.
Implementations MAY warn about the media type mismatch.
* Return an error if the blob does not match the expected digest (as [recommended for descriptors](descriptor.md#properties)).
* Return an error if they do not have an expected digest.
## Compatibility Matrix
The OCI Image Specification strives to be backwards and forwards compatible when possible.
Breaking compatibility with existing systems creates a burden on users whether they are build systems, distribution systems, container engines, etc.
This section shows where the OCI Image Specification is compatible with formats external to the OCI Image and different versions of this specification.
### application/vnd.oci.image.manifest.list.v1+json
**Similar/related schema**
- [application/vnd.docker.distribution.manifest.list.v2+json](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#manifest-list) - mediaType is different
### application/vnd.oci.image.manifest.v1+json
**Similar/related schema**
- [application/vnd.docker.distribution.manifest.v2+json](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#image-manifest-field-descriptions)
### application/vnd.oci.image.rootfs.tar.gzip
**Interchangeable and fully compatible mime-types**
- [application/vnd.docker.image.rootfs.diff.tar.gzip](https://github.com/docker/docker/blob/master/image/spec/v1.md#creating-an-image-filesystem-changeset)
### application/vnd.oci.image.config.v1+json
**Similar/related schema**
- [application/vnd.docker.container.image.v1+json](https://github.com/docker/docker/blob/master/image/spec/v1.md#image-json-description)
## Relations
The following figure shows how the above media types reference each other:
![](img/media-types.png)
[Descriptors](descriptor.md) are used for all references.
The manifest list being a "fat manifest" references one or more image manifests per target platform. An image manifest references exactly one target configuration and possibly many layers.

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# Project docs
## Release Process
* `git tag` the prior commit (preferably signed tag)
* Make a release on [github.com/opencontainers/image-spec](https://github.com/opencontainers/image-spec/releases) for the version. Attach the produced docs.

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{
"description": "OpenContainer Config Specification",
"$schema": "http://json-schema.org/draft-04/schema#",
"id": "https://opencontainers.org/schema/image/config",
"type": "object",
"properties": {
"created": {
"type": "string",
"format": "date-time"
},
"author": {
"type": "string"
},
"architecture": {
"type": "string"
},
"os": {
"type": "string"
},
"config": {
"$ref": "defs-config.json#/definitions/config"
},
"rootfs": {
"$ref": "defs-config.json#/definitions/rootfs"
},
"history": {
"type": "array",
"items": {
"$ref": "defs-config.json#/definitions/history"
}
}
},
"required": [
"architecture",
"os",
"rootfs"
]
}

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema_test
import (
"strings"
"testing"
"github.com/opencontainers/image-spec/schema"
)
func TestConfig(t *testing.T) {
for i, tt := range []struct {
config string
fail bool
}{
// expected failure: field "os" has numeric value, must be string
{
config: `
{
"architecture": "amd64",
"os": 123,
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: true,
},
// expected failure: field "config.User" has numeric value, must be string
{
config: `
{
"created": "2015-10-31T22:22:56.015925234Z",
"author": "Alyssa P. Hacker <alyspdev@example.com>",
"architecture": "amd64",
"os": "linux",
"config": {
"User": 1234
},
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: true,
},
// expected failue: history has string value, must be an array
{
config: `
{
"history": "should be an array",
"architecture": "amd64",
"os": 123,
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: true,
},
// expected failure: Env has numeric value, must be a string
{
config: `
{
"architecture": "amd64",
"os": 123,
"config": {
"Env": [
7353
]
},
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: true,
},
// expected failure: config.Volumes has string array, must be an object (string set)
{
config: `
{
"architecture": "amd64",
"os": 123,
"config": {
"Volumes": [
"/var/job-result-data",
"/var/log/my-app-logs"
]
},
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: true,
},
// expected failue: invalid JSON
{
config: `invalid JSON`,
fail: true,
},
// valid config with optional fields
{
config: `
{
"created": "2015-10-31T22:22:56.015925234Z",
"author": "Alyssa P. Hacker <alyspdev@example.com>",
"architecture": "amd64",
"os": "linux",
"config": {
"User": "1:1",
"Memory": 2048,
"MemorySwap": 4096,
"CpuShares": 8,
"ExposedPorts": {
"8080/tcp": {}
},
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"FOO=docker_is_a_really",
"BAR=great_tool_you_know"
],
"Entrypoint": [
"/bin/sh"
],
"Cmd": [
"--foreground",
"--config",
"/etc/my-app.d/default.cfg"
],
"Volumes": {
"/var/job-result-data": {},
"/var/log/my-app-logs": {}
},
"WorkingDir": "/home/alice"
},
"rootfs": {
"diff_ids": [
"sha256:9d3dd9504c685a304985025df4ed0283e47ac9ffa9bd0326fddf4d59513f0827",
"sha256:2b689805fbd00b2db1df73fae47562faac1a626d5f61744bfe29946ecff5d73d"
],
"type": "layers"
},
"history": [
{
"created": "2015-10-31T22:22:54.690851953Z",
"created_by": "/bin/sh -c #(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"
},
{
"created": "2015-10-31T22:22:55.613815829Z",
"created_by": "/bin/sh -c #(nop) CMD [\"sh\"]",
"empty_layer": true
}
]
}
`,
fail: false,
},
// valid config with only required fields
{
config: `
{
"architecture": "amd64",
"os": "linux",
"rootfs": {
"diff_ids": [
"sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
],
"type": "layers"
}
}
`,
fail: false,
},
} {
r := strings.NewReader(tt.config)
err := schema.MediaTypeImageConfig.Validate(r)
if got := err != nil; tt.fail != got {
t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
}
}
}

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{
"description": "OpenContainer Content Descriptor Specification",
"$schema": "http://json-schema.org/draft-04/schema#",
"id": "https://opencontainers.org/schema/descriptor",
"type": "object",
"properties": {
"mediaType": {
"description": "the mediatype of the referenced object",
"$ref": "defs-image.json#definitions/mediaType"
},
"size": {
"description": "the size in bytes of the referenced object",
"$ref": "defs.json#/definitions/int64"
},
"digest": {
"$ref": "defs-image.json#definitions/digest"
},
"urls": {
"description": "a list of urls from which this object may be downloaded",
"type": "array",
"items": {
"type": "string",
"format": "uri"
}
}
},
"required": [
"mediaType",
"size",
"digest"
]
}

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{
"description": "Definitions particular to OpenContainer Config Specification",
"definitions": {
"config": {
"type": "object",
"properties": {
"User": {
"type": "string"
},
"Memory": {
"$ref": "defs.json#/definitions/int64"
},
"MemorySwap": {
"$ref": "defs.json#/definitions/int64"
},
"CpuShares": {
"$ref": "defs.json#/definitions/int64"
},
"ExposedPorts": {
"$ref": "defs.json#/definitions/mapStringObject"
},
"Env": {
"type": "array",
"items": {
"type": "string"
}
},
"Entrypoint": {
"oneOf": [
{
"type": "array",
"items": {
"type": "string"
}
},
{
"type": "null"
}
]
},
"Cmd": {
"oneOf": [
{
"type": "array",
"items": {
"type": "string"
}
},
{
"type": "null"
}
]
},
"Volumes": {
"oneOf": [
{
"$ref": "defs.json#/definitions/mapStringObject"
},
{
"type": "null"
}
]
},
"WorkingDir": {
"type": "string"
}
}
},
"rootfs": {
"type": "object",
"properties": {
"diff_ids": {
"type": "array",
"items": {
"type": "string"
}
},
"type": {
"type": "string",
"enum": [
"layers"
]
}
},
"required": [
"diff_ids",
"type"
]
},
"history": {
"type": "object",
"properties": {
"created": {
"type": "string",
"format": "date-time"
},
"author": {
"type": "string"
},
"created_by": {
"type": "string"
},
"comment": {
"type": "string"
},
"empty_layer": {
"type": "boolean"
}
}
}
}
}

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{
"description": "Definitions particular to OpenContainer Image Specification",
"definitions": {
"mediaType": {
"id": "https://opencontainers.org/schema/image/mediaType",
"type": "string",
"pattern": "^[a-z]+/[0-9a-zA-Z.+]+$"
},
"digest": {
"description": "the cryptographic checksum digest of the object, in the pattern '<hash>:<hexadecimal digest>'",
"type": "string",
"pattern": "^[a-z0-9_+.-]+:[a-f0-9]+$"
},
"manifestDescriptor": {
"id": "https://opencontainers.org/schema/image/manifestDescriptor",
"type": "object",
"required": [
"mediaType",
"size",
"digest",
"platform"
],
"properties": {
"mediaType": {
"description": "the mediatype of the referenced object",
"$ref": "#definitions/mediaType"
},
"size": {
"description": "the size in bytes of the referenced object",
"$ref": "defs.json#/definitions/int64"
},
"digest": {
"$ref": "#definitions/digest"
},
"urls": {
"description": "a list of urls from which this object may be downloaded",
"type": "array",
"items": {
"type": "string",
"format": "uri"
}
},
"platform": {
"id": "https://opencontainers.org/schema/image/platform",
"type": "object",
"required": [
"architecture",
"os"
],
"properties": {
"architecture": {
"id": "https://opencontainers.org/schema/image/platform/architecture",
"type": "string"
},
"os": {
"id": "https://opencontainers.org/schema/image/platform/os",
"type": "string"
},
"os.version": {
"id": "https://opencontainers.org/schema/image/platform/os.version",
"type": "string"
},
"os.features": {
"id": "https://opencontainers.org/schema/image/platform/os.features",
"type": "array",
"items": {
"type": "string"
}
},
"variant": {
"type": "string"
},
"features": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
},
"annotations": {
"id": "https://opencontainers.org/schema/image/annotations",
"oneOf": [
{
"$ref": "defs.json#/definitions/mapStringString"
},
{
"type": "null"
}
]
}
}
}

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{
"description": "Definitions used throughout the OpenContainer Specification",
"definitions": {
"int8": {
"type": "integer",
"minimum": -128,
"maximum": 127
},
"int16": {
"type": "integer",
"minimum": -32768,
"maximum": 32767
},
"int32": {
"type": "integer",
"minimum": -2147483648,
"maximum": 2147483647
},
"int64": {
"type": "integer",
"minimum": -9223372036854776000,
"maximum": 9223372036854776000
},
"uint8": {
"type": "integer",
"minimum": 0,
"maximum": 255
},
"uint16": {
"type": "integer",
"minimum": 0,
"maximum": 65535
},
"uint32": {
"type": "integer",
"minimum": 0,
"maximum": 4294967295
},
"uint64": {
"type": "integer",
"minimum": 0,
"maximum": 18446744073709552000
},
"uint16Pointer": {
"oneOf": [
{
"$ref": "#/definitions/uint16"
},
{
"type": "null"
}
]
},
"uint64Pointer": {
"oneOf": [
{
"$ref": "#/definitions/uint64"
},
{
"type": "null"
}
]
},
"stringPointer": {
"oneOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"mapStringString": {
"type": "object",
"patternProperties": {
".{1,}": {
"type": "string"
}
}
},
"mapStringObject": {
"type": "object",
"patternProperties": {
".{1,}": {
"type": "object"
}
}
},
"UID": {
"$ref": "#/definitions/uint32"
},
"GID": {
"$ref": "#/definitions/uint32"
},
"ArrayOfGIDs": {
"type": "array",
"items": {
"$ref": "#/definitions/GID"
}
},
"ArrayOfStrings": {
"type": "array",
"items": {
"type": "string"
}
},
"FilePath": {
"type": "string"
},
"Env": {
"$ref": "#/definitions/ArrayOfStrings"
},
"Hook": {
"properties": {
"path": {
"$ref": "#/definitions/FilePath"
},
"args": {
"$ref": "#/definitions/ArrayOfStrings"
},
"env": {
"$ref": "#/definitions/Env"
}
}
},
"ArrayOfHooks": {
"type": "array",
"items": {
"$ref": "#/definitions/Hook"
}
},
"IDMapping": {
"properties": {
"hostID": {
"$ref": "#/definitions/uint32"
},
"containerID": {
"$ref": "#/definitions/uint32"
},
"size": {
"$ref": "#/definitions/uint32"
}
}
},
"Mount": {
"properties": {
"source": {
"$ref": "#/definitions/FilePath"
},
"destination": {
"$ref": "#/definitions/FilePath"
},
"options": {
"$ref": "#/definitions/ArrayOfStrings"
},
"type": {
"type": "string"
}
},
"required": [
"destination",
"source",
"type"
]
}
}
}

16
vendor/github.com/opencontainers/image-spec/schema/doc.go generated vendored Normal file
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@ -0,0 +1,16 @@
// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package schema defines the OCI image media types, schema definitions and validation functions.
package schema

44
vendor/github.com/opencontainers/image-spec/schema/error.go generated vendored Normal file
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@ -0,0 +1,44 @@
// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema
import (
"encoding/json"
"io"
"go4.org/errorutil"
)
// A SyntaxError is a description of a JSON syntax error
// including line, column and offset in the JSON file.
type SyntaxError struct {
msg string
Line, Col int
Offset int64
}
func (e *SyntaxError) Error() string { return e.msg }
// WrapSyntaxError checks whether the given error is a *json.SyntaxError
// and converts it into a *schema.SyntaxError containing line/col information using the given reader.
// If the given error is not a *json.SyntaxError it is returned unchanged.
func WrapSyntaxError(r io.Reader, err error) error {
if serr, ok := err.(*json.SyntaxError); ok {
line, col, _ := errorutil.HighlightBytePosition(r, serr.Offset)
return &SyntaxError{serr.Error(), line, col, serr.Offset}
}
return err
}

324
vendor/github.com/opencontainers/image-spec/schema/fs.go generated vendored Normal file
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@ -0,0 +1,324 @@
// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema
import (
"bytes"
"compress/gzip"
"encoding/base64"
"io/ioutil"
"net/http"
"os"
"path"
"sync"
"time"
)
type _escLocalFS struct{}
var _escLocal _escLocalFS
type _escStaticFS struct{}
var _escStatic _escStaticFS
type _escDirectory struct {
fs http.FileSystem
name string
}
type _escFile struct {
compressed string
size int64
modtime int64
local string
isDir bool
once sync.Once
data []byte
name string
}
func (_escLocalFS) Open(name string) (http.File, error) {
f, present := _escData[path.Clean(name)]
if !present {
return nil, os.ErrNotExist
}
return os.Open(f.local)
}
func (_escStaticFS) prepare(name string) (*_escFile, error) {
f, present := _escData[path.Clean(name)]
if !present {
return nil, os.ErrNotExist
}
var err error
f.once.Do(func() {
f.name = path.Base(name)
if f.size == 0 {
return
}
var gr *gzip.Reader
b64 := base64.NewDecoder(base64.StdEncoding, bytes.NewBufferString(f.compressed))
gr, err = gzip.NewReader(b64)
if err != nil {
return
}
f.data, err = ioutil.ReadAll(gr)
})
if err != nil {
return nil, err
}
return f, nil
}
func (fs _escStaticFS) Open(name string) (http.File, error) {
f, err := fs.prepare(name)
if err != nil {
return nil, err
}
return f.File()
}
func (dir _escDirectory) Open(name string) (http.File, error) {
return dir.fs.Open(dir.name + name)
}
func (f *_escFile) File() (http.File, error) {
type httpFile struct {
*bytes.Reader
*_escFile
}
return &httpFile{
Reader: bytes.NewReader(f.data),
_escFile: f,
}, nil
}
func (f *_escFile) Close() error {
return nil
}
func (f *_escFile) Readdir(count int) ([]os.FileInfo, error) {
return nil, nil
}
func (f *_escFile) Stat() (os.FileInfo, error) {
return f, nil
}
func (f *_escFile) Name() string {
return f.name
}
func (f *_escFile) Size() int64 {
return f.size
}
func (f *_escFile) Mode() os.FileMode {
return 0
}
func (f *_escFile) ModTime() time.Time {
return time.Unix(f.modtime, 0)
}
func (f *_escFile) IsDir() bool {
return f.isDir
}
func (f *_escFile) Sys() interface{} {
return f
}
// _escFS returns a http.Filesystem for the embedded assets. If useLocal is true,
// the filesystem's contents are instead used.
func _escFS(useLocal bool) http.FileSystem {
if useLocal {
return _escLocal
}
return _escStatic
}
// _escDir returns a http.Filesystem for the embedded assets on a given prefix dir.
// If useLocal is true, the filesystem's contents are instead used.
func _escDir(useLocal bool, name string) http.FileSystem {
if useLocal {
return _escDirectory{fs: _escLocal, name: name}
}
return _escDirectory{fs: _escStatic, name: name}
}
// _escFSByte returns the named file from the embedded assets. If useLocal is
// true, the filesystem's contents are instead used.
func _escFSByte(useLocal bool, name string) ([]byte, error) {
if useLocal {
f, err := _escLocal.Open(name)
if err != nil {
return nil, err
}
b, err := ioutil.ReadAll(f)
f.Close()
return b, err
}
f, err := _escStatic.prepare(name)
if err != nil {
return nil, err
}
return f.data, nil
}
// _escFSMustByte is the same as _escFSByte, but panics if name is not present.
func _escFSMustByte(useLocal bool, name string) []byte {
b, err := _escFSByte(useLocal, name)
if err != nil {
panic(err)
}
return b
}
// _escFSString is the string version of _escFSByte.
func _escFSString(useLocal bool, name string) (string, error) {
b, err := _escFSByte(useLocal, name)
return string(b), err
}
// _escFSMustString is the string version of _escFSMustByte.
func _escFSMustString(useLocal bool, name string) string {
return string(_escFSMustByte(useLocal, name))
}
var _escData = map[string]*_escFile{
"/config-schema.json": {
local: "config-schema.json",
size: 774,
modtime: 1480129006,
compressed: `
H4sIAAAJbogA/5SRvW7rMAyFdz+F4WS8ju7QKWsfoEPHooMqUzEDWFRJZgiKvHv1EzcxEBTuEsSH/M4R
ya+mbbsBxDFGRQrdvu1eIoRnCmoxALfpn8dD+xrBoUdnS9e/jG3FjTDZjIyqcW/MUSj0Vd0RH8zA1mv/
/8lUbVM5HGZEEkMpzc1pUrDabXCyBzCu5FdSzxEySx9HcFq1yMmBFUFSJY+TNMdgFYYf4Q4VZQzVruie
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FxOpl797XbmF14iixOdHY1hme76tO+1mug9dHTtHXLlLM/+WN3QMnyfkcvK3B5e4bXo5ffp4by7NdwAA
AP//XlvgsQYDAAA=
`,
},
"/content-descriptor.json": {
local: "content-descriptor.json",
size: 836,
modtime: 1480407618,
compressed: `
H4sIAAAJbogA/5SSP2/iQBDFe3+KkaE88BXoCtpLnyLpohSLd2wPwrvO7CDkRHz37HhtMImUPw3Cb99v
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htn0V5kE2/nemTMIk6sv1nhSeW6Nto1pKR/1czb9DlVyxpcjMeplfPp4ceaf7vYNxofn7Jy9BwAA//9L
DLQ9RAMAAA==
`,
},
"/defs-config.json": {
local: "defs-config.json",
size: 2270,
modtime: 1478076438,
compressed: `
H4sIAAAJbogA/+RVzY7TMBC+5yksw7GwF8SB6y5HVKQKOCBUucl4O0vsMeMJEKF9d5xs6cZJG7q79MSh
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OU9Ck3MwHdKnQMEFadd9J4/BN0Q1GH/0PBTd77b4HQAA//9fxiKD3ggAAA==
`,
},
"/defs-image.json": {
local: "defs-image.json",
size: 2736,
modtime: 1480409203,
compressed: `
H4sIAAAJbogA/7yWy27bOhCG934KQgmQhS86i4MCNYIARbPpKot01cAtJtTImlQiVZJO6gR+95K6UrcE
boyuEg7Jn/83nBH9MmMsiFBzRbkhKYI1C64xJkFupFkOyhDfpaCYkewmR/FZCgMkULEvGWyR3ebIKSYO
xfZFqdcIWD13hA1mGBF83efYhGyQIndgYkyu12EorTyv5fVKqm2oeYIZhOSOCluJRS1gSsFAG0Vi28Zz
MAZVgfP9DpbPm3l499/yo/3v0/Lbar6ZnwfF0kO5I4hoi9r41npJMQkyrva5kVsFeUKcWWf8p95lrNzL
ZMzcInn/gNwsGIliWBlhF5cJ6ORqfZngb4hsyjJIq51XF8fzWJYf89VyM1/bUWxHA6IMBMVW/brikOod
iR9qDRyX3G1c4a8dKXTn3FWxThUs2qCm5864ugwvkqdgYqmyoApt2sQoa97WKGoPb6Lcpu61WOs46jtU
GKOyKcGI9bAKiXM77/aeeYXuFWez9NBnfNuKW+ZK535vUB9px7rRqwctxVnoGyNhPvw/bmpQ9dN41dJR
mZ1K9RtswFIqe8QtZrGSGXuyXZRYQNIVFstgz+6RRfJJpNJ2SdQFrUsNlIJ9d4oMZn0P0+1UzbqKAodv
CSjw5g6jmE0R9lCP66VGZRRt7H5HO6mYAcUTS87NTmEfTmqfaNNRnGiaoWZ/9q9pw1esDu+pM30Ygp3O
lhV7p5nVoz2hrPLTmWpE32suRnAZP23KWtVJe8MWLY8cbdM3wfyOHAN9BEUg+h+yo/P1WrL+Edj4R2jm
/60feBBCGuj+yjr6Vn2R5k2VAm/iztdm9H2YeG8yyG8L1NsesJful7Fvn9ilaTCA3szq0WF2mP0JAAD/
/0efdTKwCgAA
`,
},
"/defs.json": {
local: "defs.json",
size: 3193,
modtime: 1471577655,
compressed: `
H4sIAAAJbogA/7RWTXPaMBC98ys8tEfa2PIX9NYp/cghAzOZnjo9uGYBtSCpstxpmuG/VzLGWPZiMKWH
JPau9r23T6tYzwPHGS4gSyUVinI2fOMMp7CkjJq3zMkzWDhqLXm+WvNc6UdwZgLYO85UQhlI51FASpc0
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B+6utLxauBvh1YduWL7Z1FaXT18RL26pUDt7U4WZkpSt+is8cOzrb6tpm4jHAnb/Gxsl/u07pOo4SSJR
Wj+bSy5AKgpZrUinXz97o50V6mphUP/bEjXbU/9nUSXWGVGf76d1IafHRh94q/DjtYVvpUyeZktdn2EW
JCZ9dIAq2Da6xqmMHrTDkm9v/ZWU+EbbPB/oBuaJWmMM9brD+vfs13kDG+ItgE+c/6gjiBNTImxRHWxV
C9hh1DatsstwMNVNNLDa7wAzPp0Z4pLPGHLTmSocRhnvpw+JEI1/Lac2YM0zZZ2WDsr6iWlalh5ufrcA
y+gfuBIFdeSB50xd4kbGc5leSN09kPryrChLysvzP8NxYd+bO6EuGfFy/Pp9MqoplfAzpxIW1hfU6nnU
MrVJbn8cB+ZnN/gbAAD//0JyEpx5DAAA
`,
},
"/image-manifest-schema.json": {
local: "image-manifest-schema.json",
size: 1139,
modtime: 1480129536,
compressed: `
H4sIAAAJbogA/6RSO4/UMBDu8ytGvuu4xByiupbqCkTBiQZRmHiSzCl+YPtWrFb73/Ej3mx2KRBb5ou/
18wcGgAm0feObCCj2ROwLxb1J6ODII0OnpUYET4LTQP6AF8t9jRQL/Lrh0S/9/2ESiTqFIJ94vzVG90W
tDNu5NKJIbTvP/KC3RUeyUrxkWOia19dfaaV15xSAq6WBIUb9hYT2/x8xX7BrIsaLhD6+CcVi1iR+BYV
S7kCX3d+mcjDQDhL8KUheggTQjaHag5FD3ZFEIQHoYF0wBFdTpHF/68Z34Y9qdWuVzaKNKk3Ff99WDHx
u2IZOpY/TKEk8VKUDjfmXLWuMvrgSI8rjjpn+b58R0RYOy/nw3dadqanLut3Vb/bPb5LF8QW0o9NkZhw
oPG8xb3DIXmn7KhDW1drXLfKVPos9rHcOb1GF86J/Wa4zwFVevq4LnZBDmuff3KP/psUQmsT8gz87fto
Z4pLOZd8uByNxMG3Zcop1B2PQDye/HrDbGrWnJQ5/PVGDuVphexvN8ouD6IuaTvzJq3y2PwJAAD//xOl
pJlzBAAA
`,
},
"/manifest-list-schema.json": {
local: "manifest-list-schema.json",
size: 1101,
modtime: 1480129536,
compressed: `
H4sIAAAJbogA/6ySP48TMRDF+3yKkY8OsgZEdS00SCAKTjSIwqxnd+cU/8Hjizid8t3xn/Vml1AgXZpI
eet57/fsedoBCI3cB/KRnBW3IL54tO+djYosBvho1IjwWVkakCN8ovTz1WNPA/WqjLzKHi+4n9CoPD/F
6G+lvGdn91XtXBilDmqI+9fvZNVu6hzpNsJpxqXovkVzGaunJWUMaWaM/SFhVIP46DFbuJ/32M+aD8ko
REJOX3LFpFWfb8m21qzyZfu7iRgGwoMGrjWRIU4IhQA2BFBN4VhdQTEoC2QjjhgKSkl4Rke5xV4sW+uL
LEOWzINJ396eNfW7aUU61S/CoCZ1V52ergF7NrwA5RjIjmcdbQH6Pv9PivL+MK+UPFrduZ66EtK1kC6H
dMc3L/NqiXnyx7bSfJTXlRqDCkE9rp4lolmfy1sccMgnNQ68r+E560YmIV1sZuOl84d5cVxoLKcNi7LW
xdKHr3XBa8ulx39Bryd3jbWQioC/HiigXp5D/GvpxN+Pu7rrXX6G0+5PAAAA//+jTbrrTQQAAA==
`,
},
"/": {
isDir: true,
local: "/",
},
}

21
vendor/github.com/opencontainers/image-spec/schema/gen.go generated vendored Normal file
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@ -0,0 +1,21 @@
// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema
// Generates an embbedded http.FileSystem for all schema files
// using esc (https://github.com/mjibson/esc).
// This should generally be invoked with `make schema-fs`
//go:generate esc -private -pkg=schema -ignore=.*go .

42
vendor/github.com/opencontainers/image-spec/schema/image-manifest-schema.json generated vendored Normal file
View file

@ -0,0 +1,42 @@
{
"description": "OpenContainer Image Manifest Specification",
"$schema": "http://json-schema.org/draft-04/schema#",
"id": "https://opencontainers.org/schema/image/manifest",
"type": "object",
"properties": {
"schemaVersion": {
"description": "This field specifies the image manifest schema version as an integer",
"id": "https://opencontainers.org/schema/image/manifest/schemaVersion",
"type": "integer",
"minimum": 2,
"maximum": 2
},
"mediaType": {
"id": "https://opencontainers.org/schema/image/manifest/mediaType",
"type": "string",
"enum": [
"application/vnd.oci.image.manifest.v1+json"
]
},
"config": {
"$ref": "content-descriptor.json"
},
"layers": {
"type": "array",
"minItems": 1,
"items": {
"$ref": "content-descriptor.json"
}
},
"annotations": {
"id": "https://opencontainers.org/schema/image/manifest-list/annotations",
"$ref": "defs-image.json#/definitions/annotations"
}
},
"required": [
"schemaVersion",
"mediaType",
"config",
"layers"
]
}

37
vendor/github.com/opencontainers/image-spec/schema/manifest-list-schema.json generated vendored Normal file
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@ -0,0 +1,37 @@
{
"description": "OpenContainer Image Manifest List Specification",
"$schema": "http://json-schema.org/draft-04/schema#",
"id": "https://opencontainers.org/schema/image/manifest-list",
"type": "object",
"properties": {
"schemaVersion": {
"description": "This field specifies the image manifest-list schema version as an integer",
"id": "https://opencontainers.org/schema/image/manifest-list/schemaVersion",
"type": "integer",
"minimum": 2,
"maximum": 2
},
"mediaType": {
"id": "https://opencontainers.org/schema/image/manifest-list/mediaType",
"type": "string",
"enum": [
"application/vnd.oci.image.manifest.list.v1+json"
]
},
"manifests": {
"type": "array",
"items": {
"$ref": "defs-image.json#/definitions/manifestDescriptor"
}
},
"annotations": {
"id": "https://opencontainers.org/schema/image/manifest-list/annotations",
"$ref": "defs-image.json#/definitions/annotations"
}
},
"required": [
"schemaVersion",
"mediaType",
"manifests"
]
}

230
vendor/github.com/opencontainers/image-spec/schema/manifest_backwards_compatibility_test.go generated vendored Normal file
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@ -0,0 +1,230 @@
// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema_test
import (
"crypto/sha256"
"encoding/hex"
"fmt"
"strings"
"testing"
"github.com/opencontainers/image-spec/schema"
"github.com/opencontainers/image-spec/specs-go/v1"
)
var compatMap = map[string]string{
"application/vnd.docker.distribution.manifest.list.v2+json": v1.MediaTypeImageManifestList,
"application/vnd.docker.distribution.manifest.v2+json": v1.MediaTypeImageManifest,
"application/vnd.docker.image.rootfs.diff.tar.gzip": v1.MediaTypeImageLayer,
"application/vnd.docker.container.image.v1+json": v1.MediaTypeImageConfig,
}
// convertFormats converts Docker v2.2 image format JSON documents to OCI
// format by simply replacing instances of the strings found in the compatMap
// found in the input string.
func convertFormats(input string) string {
out := input
for k, v := range compatMap {
out = strings.Replace(out, k, v, -1)
}
return out
}
func TestBackwardsCompatibilityManifestList(t *testing.T) {
for i, tt := range []struct {
manifest string
digest string
fail bool
}{
{
digest: "sha256:e588eb8123f2031a41f2e60bc27f30a4388e181e07410aff392f7dc96b585969",
manifest: `{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
"manifests": [
{
"mediaType": "application/vnd.docker.distribution.manifest.v1+json",
"size": 2094,
"digest": "sha256:7820f9a86d4ad15a2c4f0c0e5479298df2aa7c2f6871288e2ef8546f3e7b6783",
"platform": {
"architecture": "ppc64le",
"os": "linux"
}
},
{
"mediaType": "application/vnd.docker.distribution.manifest.v1+json",
"size": 1922,
"digest": "sha256:ae1b0e06e8ade3a11267564a26e750585ba2259c0ecab59ab165ad1af41d1bdd",
"platform": {
"architecture": "amd64",
"os": "linux",
"features": [
"sse"
]
}
},
{
"mediaType": "application/vnd.docker.distribution.manifest.v1+json",
"size": 2084,
"digest": "sha256:e4c0df75810b953d6717b8f8f28298d73870e8aa2a0d5e77b8391f16fdfbbbe2",
"platform": {
"architecture": "s390x",
"os": "linux"
}
},
{
"mediaType": "application/vnd.docker.distribution.manifest.v1+json",
"size": 2084,
"digest": "sha256:07ebe243465ef4a667b78154ae6c3ea46fdb1582936aac3ac899ea311a701b40",
"platform": {
"architecture": "arm",
"os": "linux",
"variant": "armv7"
}
},
{
"mediaType": "application/vnd.docker.distribution.manifest.v1+json",
"size": 2090,
"digest": "sha256:fb2fc0707b86dafa9959fe3d29e66af8787aee4d9a23581714be65db4265ad8a",
"platform": {
"architecture": "arm64",
"os": "linux",
"variant": "armv8"
}
}
]
}`,
fail: false,
},
} {
sum := sha256.Sum256([]byte(tt.manifest))
got := fmt.Sprintf("sha256:%s", hex.EncodeToString(sum[:]))
if tt.digest != got {
t.Errorf("test %d: expected digest %s but got %s", i, tt.digest, got)
}
manifest := convertFormats(tt.manifest)
r := strings.NewReader(manifest)
err := schema.MediaTypeManifestList.Validate(r)
if got := err != nil; tt.fail != got {
t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
}
}
}
func TestBackwardsCompatibilityManifest(t *testing.T) {
for i, tt := range []struct {
manifest string
digest string
fail bool
}{
// manifest pulled from docker hub using hash value
//
// curl -L -H "Authorization: Bearer ..." -H \
// "Accept: application/vnd.docker.distribution.manifest.v2+json" \
// https://registry-1.docker.io/v2/library/docker/manifests/sha256:888206c77cd2811ec47e752ba291e5b7734e3ef137dfd222daadaca39a9f17bc
{
digest: "sha256:888206c77cd2811ec47e752ba291e5b7734e3ef137dfd222daadaca39a9f17bc",
manifest: `{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"config": {
"mediaType": "application/octet-stream",
"size": 3210,
"digest": "sha256:5359a4f250650c20227055957e353e8f8a74152f35fe36f00b6b1f9fc19c8861"
},
"layers": [
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": 2310272,
"digest": "sha256:fae91920dcd4542f97c9350b3157139a5d901362c2abec284de5ebd1b45b4957"
},
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": 913022,
"digest": "sha256:f384f6ab36adad485192f09379c0b58dc612a3cde82c551e082a7c29a87c95da"
},
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": 9861668,
"digest": "sha256:ed0d2dd5e1a0e5e650a330a864c8a122e9aa91fa6ba9ac6f0bd1882e59df55e7"
},
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": 465,
"digest": "sha256:ec4d00b58417c45f7ddcfde7bcad8c9d62a7d6d5d17cdc1f7d79bcb2e22c1491"
}
]
}`,
fail: false,
},
} {
sum := sha256.Sum256([]byte(tt.manifest))
got := fmt.Sprintf("sha256:%s", hex.EncodeToString(sum[:]))
if tt.digest != got {
t.Errorf("test %d: expected digest %s but got %s", i, tt.digest, got)
}
manifest := convertFormats(tt.manifest)
r := strings.NewReader(manifest)
err := schema.MediaTypeManifest.Validate(r)
if got := err != nil; tt.fail != got {
t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
}
}
}
func TestBackwardsCompatibilityConfig(t *testing.T) {
for i, tt := range []struct {
config string
digest string
fail bool
}{
// config pulled from docker hub blob store
//
// $ TOKEN=$(curl https://auth.docker.io/token\?service\=registry.docker.io\&scope\=repository:library/docker:pull | jq -r .token)
// $ CONFIG_DIGEST=$(curl -H "Authorization: Bearer ${TOKEN}" -H 'Accept: application/vnd.docker.distribution.manifest.v2+json' https://index.docker.io/v2/library/docker/manifests/1.12.1 | jq -r .config.digest)
// $ curl -LH "Authorization: Bearer ${TOKEN}" https://index.docker.io/v2/library/docker/blobs/${CONFIG_DIGEST}
{
digest: "sha256:a059ea7356d5b5a9e0f6352bfa463e7bd4721c2ade3ef168603826e0de6fe54b",
config: `{"architecture":"amd64","config":{"Hostname":"09713501c176","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","DOCKER_BUCKET=get.docker.com","DOCKER_VERSION=1.12.1","DOCKER_SHA256=05ceec7fd937e1416e5dce12b0b6e1c655907d349d52574319a1e875077ccb79"],"Cmd":["sh"],"Image":"sha256:32e2e3ccf2a4fbaa75b078bf539cd5ea2e374a4242665a5ec3f3c01e7a3eefb8","Volumes":null,"WorkingDir":"","Entrypoint":["docker-entrypoint.sh"],"OnBuild":[],"Labels":{}},"container":"15a30be053fb3069a7879b4ea537e84689d8e8e8ba94dc4dd499271506803ba1","container_config":{"Hostname":"09713501c176","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","DOCKER_BUCKET=get.docker.com","DOCKER_VERSION=1.12.1","DOCKER_SHA256=05ceec7fd937e1416e5dce12b0b6e1c655907d349d52574319a1e875077ccb79"],"Cmd":["/bin/sh","-c","#(nop) ","CMD [\"sh\"]"],"Image":"sha256:32e2e3ccf2a4fbaa75b078bf539cd5ea2e374a4242665a5ec3f3c01e7a3eefb8","Volumes":null,"WorkingDir":"","Entrypoint":["docker-entrypoint.sh"],"OnBuild":[],"Labels":{}},"created":"2016-10-10T23:04:00.821781828Z","docker_version":"1.12.1","history":[{"created":"2016-09-23T16:29:57.276868291Z","created_by":"/bin/sh -c #(nop) ADD file:d6ee3ba7a4d59b161917082cc7242c660c61bb3f3cc1549c7e2dfff2b0de7104 in / "},{"created":"2016-09-23T16:36:54.024611637Z","created_by":"/bin/sh -c apk add --no-cache \t\tca-certificates \t\tcurl \t\topenssl"},{"created":"2016-09-23T16:36:54.365914519Z","created_by":"/bin/sh -c #(nop) ENV DOCKER_BUCKET=get.docker.com","empty_layer":true},{"created":"2016-09-23T16:36:54.662005049Z","created_by":"/bin/sh -c #(nop) ENV DOCKER_VERSION=1.12.1","empty_layer":true},{"created":"2016-09-23T16:36:54.946033025Z","created_by":"/bin/sh -c #(nop) ENV DOCKER_SHA256=05ceec7fd937e1416e5dce12b0b6e1c655907d349d52574319a1e875077ccb79","empty_layer":true},{"created":"2016-09-23T16:36:58.535084011Z","created_by":"/bin/sh -c set -x \t\u0026\u0026 curl -fSL \"https://${DOCKER_BUCKET}/builds/Linux/x86_64/docker-${DOCKER_VERSION}.tgz\" -o docker.tgz \t\u0026\u0026 echo \"${DOCKER_SHA256} *docker.tgz\" | sha256sum -c - \t\u0026\u0026 tar -xzvf docker.tgz \t\u0026\u0026 mv docker/* /usr/local/bin/ \t\u0026\u0026 rmdir docker \t\u0026\u0026 rm docker.tgz \t\u0026\u0026 docker -v"},{"created":"2016-10-10T23:04:00.334158993Z","created_by":"/bin/sh -c #(nop) COPY file:399605dc1850a60a586b5494ab538bad495fd6f94eabca0c5f8a26468ce6030f in /usr/local/bin/ "},{"created":"2016-10-10T23:04:00.577900192Z","created_by":"/bin/sh -c #(nop) ENTRYPOINT [\"docker-entrypoint.sh\"]","empty_layer":true},{"created":"2016-10-10T23:04:00.821781828Z","created_by":"/bin/sh -c #(nop) CMD [\"sh\"]","empty_layer":true}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:9007f5987db353ec398a223bc5a135c5a9601798ba20a1abba537ea2f8ac765f","sha256:1b06990ff0df8dad281fad7e6e4c5e91f32f8f8c095d6c74cf1e90a6f4407e28","sha256:9d12251ce74aac7619a83641ab72431a8d82e58bcd8a262c2bb0cdb280f1f3b5","sha256:17a7f292c2427adfc75c3a789bab8efec925dc38c5437bf83d2f528013ab80e2"]}}`,
fail: false,
},
{
// fedora:23 from docker hub
// both Entrypoint and Cmd can be nullable
digest: "sha256:a20665eb1fe2912accb3d5dadaed360430df0d1aa46874875886947d61d3d4ee",
config: `{"architecture":"amd64","author":"Patrick Uiterwijk \u003cpatrick@puiterwijk.org\u003e","config":{"Hostname":"8dfe43d80430","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":null,"Image":"sha256:6986ae504bbf843512d680cc959484452034965db15f75ee8bdd1b107f61500b","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"container":"6249cd2c4b1d6b1bf05903364cbcb95781508994d6407c1564d494e748ea1b41","container_config":{"Hostname":"8dfe43d80430","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/bin/sh","-c","#(nop) ADD file:293a6e463aa402bb8f80eb5cfc937f375cedc6843abaeb9eccfe3923bb3fc80b in /"],"Image":"sha256:6986ae504bbf843512d680cc959484452034965db15f75ee8bdd1b107f61500b","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"created":"2016-06-10T18:44:31.784795904Z","docker_version":"1.10.3","history":[{"created":"2016-06-10T18:44:03.360264073Z","author":"Patrick Uiterwijk \u003cpatrick@puiterwijk.org\u003e","created_by":"/bin/sh -c #(nop) MAINTAINER Patrick Uiterwijk \u003cpatrick@puiterwijk.org\u003e","empty_layer":true},{"created":"2016-06-10T18:44:31.784795904Z","author":"Patrick Uiterwijk \u003cpatrick@puiterwijk.org\u003e","created_by":"/bin/sh -c #(nop) ADD file:293a6e463aa402bb8f80eb5cfc937f375cedc6843abaeb9eccfe3923bb3fc80b in /"}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:d43f38155a799dc53d8fbb9f3bc11f51805f4027cd5c3d10b9823201cd5b9400"]}}`,
fail: false,
},
} {
sum := sha256.Sum256([]byte(tt.config))
got := fmt.Sprintf("sha256:%s", hex.EncodeToString(sum[:]))
if tt.digest != got {
t.Errorf("test %d: expected digest %s but got %s", i, tt.digest, got)
}
config := convertFormats(tt.config)
r := strings.NewReader(config)
err := schema.MediaTypeImageConfig.Validate(r)
if got := err != nil; tt.fail != got {
t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
}
}
}

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vendor/github.com/opencontainers/image-spec/schema/manifest_test.go generated vendored Normal file
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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema_test
import (
"strings"
"testing"
"github.com/opencontainers/image-spec/schema"
)
func TestManifest(t *testing.T) {
for i, tt := range []struct {
manifest string
fail bool
}{
// expected failure: mediaType does not match pattern
{
manifest: `
{
"schemaVersion": 2,
"mediaType": "invalid",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 1470,
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 148,
"digest": "sha256:c57089565e894899735d458f0fd4bb17a0f1e0df8d72da392b85c9b35ee777cd"
}
]
}
`,
fail: true,
},
// expected failure: config.size is a string, expected integer
{
manifest: `
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": "1470",
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
},
"layers": []
}
`,
fail: true,
},
// expected failure: layers.size is string, expected integer
{
manifest: `
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 1470,
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": "675598",
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
}
]
}
`,
fail: true,
},
// valid manifest
{
manifest: `
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 1470,
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 675598,
"digest": "sha256:9d3dd9504c685a304985025df4ed0283e47ac9ffa9bd0326fddf4d59513f0827"
},
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 156,
"digest": "sha256:2b689805fbd00b2db1df73fae47562faac1a626d5f61744bfe29946ecff5d73d"
},
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"size": 148,
"digest": "sha256:c57089565e894899735d458f0fd4bb17a0f1e0df8d72da392b85c9b35ee777cd"
}
],
"annotations": {
"key1": "value1",
"key2": "value2"
}
}
`,
fail: false,
},
// expected failure: empty layer, expected at least one
{
manifest: `
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"size": 1470,
"digest": "sha256:c86f7763873b6c0aae22d963bab59b4f5debbed6685761b5951584f6efb0633b"
},
"layers": []
}
`,
fail: true,
},
} {
r := strings.NewReader(tt.manifest)
err := schema.MediaTypeManifest.Validate(r)
if got := err != nil; tt.fail != got {
t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
}
}
}

50
vendor/github.com/opencontainers/image-spec/schema/schema.go generated vendored Normal file
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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema
import (
"net/http"
"github.com/opencontainers/image-spec/specs-go/v1"
)
// Media types for the OCI image formats
const (
MediaTypeDescriptor Validator = v1.MediaTypeDescriptor
MediaTypeManifest Validator = v1.MediaTypeImageManifest
MediaTypeManifestList Validator = v1.MediaTypeImageManifestList
MediaTypeImageConfig Validator = v1.MediaTypeImageConfig
MediaTypeImageLayer unimplemented = v1.MediaTypeImageLayer
)
var (
// fs stores the embedded http.FileSystem
// having the OCI JSON schema files in root "/".
fs = _escFS(false)
// specs maps OCI schema media types to schema files.
specs = map[Validator]string{
MediaTypeDescriptor: "content-descriptor.json",
MediaTypeManifest: "image-manifest-schema.json",
MediaTypeManifestList: "manifest-list-schema.json",
MediaTypeImageConfig: "config-schema.json",
}
)
// FileSystem returns an in-memory file system including the schema files.
// The schema files are located at the root directory.
func FileSystem() http.FileSystem {
return fs
}

187
vendor/github.com/opencontainers/image-spec/schema/spec_test.go generated vendored Normal file
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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema_test
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/url"
"os"
"strings"
"testing"
"github.com/opencontainers/image-spec/schema"
"github.com/pkg/errors"
"github.com/russross/blackfriday"
)
var (
errFormatInvalid = errors.New("format: invalid")
)
func TestValidateDescriptor(t *testing.T) {
validate(t, "../descriptor.md")
}
func TestValidateManifest(t *testing.T) {
validate(t, "../manifest.md")
}
func TestValidateManifestList(t *testing.T) {
validate(t, "../manifest-list.md")
}
func TestValidateConfig(t *testing.T) {
validate(t, "../config.md")
}
// TODO(sur): include examples from all specification files
func validate(t *testing.T, name string) {
m, err := os.Open(name)
if err != nil {
t.Fatal(err)
}
defer m.Close()
examples, err := extractExamples(m)
if err != nil {
t.Fatal(err)
}
for _, example := range examples {
if example.Err == errFormatInvalid && example.Mediatype == "" { // ignore
continue
}
if example.Err != nil {
printFields(t, "error", example.Mediatype, example.Title, example.Err)
t.Error(err)
continue
}
err = schema.Validator(example.Mediatype).Validate(strings.NewReader(example.Body))
if err == nil {
printFields(t, "ok", example.Mediatype, example.Title)
t.Log(example.Body, "---")
continue
}
var errs []error
if verr, ok := errors.Cause(err).(schema.ValidationError); ok {
errs = verr.Errs
} else {
printFields(t, "error", example.Mediatype, example.Title, err)
t.Error(err)
t.Log(example.Body, "---")
continue
}
for _, err := range errs {
// TOOD(stevvooe): This is nearly useless without file, line no.
printFields(t, "invalid", example.Mediatype, example.Title)
t.Error(err)
fmt.Println(example.Body, "---")
continue
}
}
}
// renderer allows one to incercept fenced blocks in markdown documents.
type renderer struct {
blackfriday.Renderer
fn func(text []byte, lang string)
}
func (r *renderer) BlockCode(out *bytes.Buffer, text []byte, lang string) {
r.fn(text, lang)
r.Renderer.BlockCode(out, text, lang)
}
type example struct {
Lang string // gets raw "lang" field
Title string
Mediatype string
Body string
Err error
// TODO(stevvooe): Figure out how to keep track of revision, file, line so
// that we can trace back verification output.
}
// parseExample treats the field as a syntax,attribute tuple separated by a comma.
// Attributes are encoded as a url values.
//
// An example of this is `json,title=Foo%20Bar&mediatype=application/json. We
// get that the "lang" is json, the title is "Foo Bar" and the mediatype is
// "application/json".
//
// This preserves syntax highlighting and lets us tag examples with further
// metadata.
func parseExample(lang, body string) (e example) {
e.Lang = lang
e.Body = body
parts := strings.SplitN(lang, ",", 2)
if len(parts) < 2 {
e.Err = errFormatInvalid
return
}
m, err := url.ParseQuery(parts[1])
if err != nil {
e.Err = err
return
}
e.Mediatype = m.Get("mediatype")
e.Title = m.Get("title")
return
}
func extractExamples(rd io.Reader) ([]example, error) {
p, err := ioutil.ReadAll(rd)
if err != nil {
return nil, err
}
var examples []example
renderer := &renderer{
Renderer: blackfriday.HtmlRenderer(0, "test test", ""),
fn: func(text []byte, lang string) {
examples = append(examples, parseExample(lang, string(text)))
},
}
// just pass over the markdown and ignore the rendered result. We just want
// the side-effect of calling back for each code block.
// TODO(stevvooe): Consider just parsing these with a scanner. It will be
// faster and we can retain file, line no.
blackfriday.MarkdownOptions(p, renderer, blackfriday.Options{
Extensions: blackfriday.EXTENSION_FENCED_CODE,
})
return examples, nil
}
// printFields prints each value tab separated.
func printFields(t *testing.T, vs ...interface{}) {
var ss []string
for _, f := range vs {
ss = append(ss, fmt.Sprint(f))
}
t.Log(strings.Join(ss, "\t"))
}

119
vendor/github.com/opencontainers/image-spec/schema/validator.go generated vendored Normal file
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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package schema
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
"github.com/xeipuuv/gojsonschema"
)
// Validator wraps a media type string identifier
// and implements validation against a JSON schema.
type Validator string
type validateDescendantsFunc func(r io.Reader) error
var mapValidateDescendants = map[Validator]validateDescendantsFunc{
MediaTypeManifest: validateManifestDescendants,
}
// ValidationError contains all the errors that happened during validation.
type ValidationError struct {
Errs []error
}
func (e ValidationError) Error() string {
return fmt.Sprintf("%v", e.Errs)
}
// Validate validates the given reader against the schema of the wrapped media type.
func (v Validator) Validate(src io.Reader) error {
buf, err := ioutil.ReadAll(src)
if err != nil {
return errors.Wrap(err, "unable to read the document file")
}
if f, ok := mapValidateDescendants[v]; ok {
if f == nil {
return fmt.Errorf("internal error: mapValidateDescendents[%q] is nil", v)
}
err = f(bytes.NewReader(buf))
if err != nil {
return err
}
}
sl := gojsonschema.NewReferenceLoaderFileSystem("file:///"+specs[v], fs)
ml := gojsonschema.NewStringLoader(string(buf))
result, err := gojsonschema.Validate(sl, ml)
if err != nil {
return errors.Wrapf(
WrapSyntaxError(bytes.NewReader(buf), err),
"schema %s: unable to validate", v)
}
if result.Valid() {
return nil
}
errs := make([]error, 0, len(result.Errors()))
for _, desc := range result.Errors() {
errs = append(errs, fmt.Errorf("%s", desc))
}
return ValidationError{
Errs: errs,
}
}
type unimplemented string
func (v unimplemented) Validate(src io.Reader) error {
return fmt.Errorf("%s: unimplemented", v)
}
func validateManifestDescendants(r io.Reader) error {
header := v1.Manifest{}
buf, err := ioutil.ReadAll(r)
if err != nil {
return errors.Wrapf(err, "error reading the io stream")
}
err = json.Unmarshal(buf, &header)
if err != nil {
return errors.Wrap(err, "manifest format mismatch")
}
if header.Config.MediaType != string(v1.MediaTypeImageConfig) {
fmt.Printf("warning: config %s has an unknown media type: %s\n", header.Config.Digest, header.Config.MediaType)
}
for _, layer := range header.Layers {
if layer.MediaType != string(v1.MediaTypeImageLayer) &&
layer.MediaType != string(v1.MediaTypeImageLayerNonDistributable) {
fmt.Printf("warning: layer %s has an unknown media type: %s\n", layer.Digest, layer.MediaType)
}
}
return nil
}

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# Open Container Initiative Image Format Specification
This specification defines an OCI Image, consisting of a [manifest](manifest.md), a set of [filesystem layers](layer.md), and a [configuration](config.md).
The goal of this specification is to enable the creation of interoperable tools for building, transporting, and preparing a container image to run.
## Table of Contents
- [Introduction](spec.md)
- [Notational Conventions](#notational-conventions)
- [Overview](#overview)
- [Understanding the Specification](#understanding-the-specification)
- [Media Types](media-types.md)
- [Content Descriptors](descriptor.md)
- [Image Layout](image-layout.md)
- [Image Manifest](manifest.md)
- [Image Manifest List](manifest-list.md)
- [Filesystem Layers](layer.md)
- [Image Configuration](config.md)
- [Canonicalization](canonicalization.md)
# Notational Conventions
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" are to be interpreted as described in [RFC 2119](http://tools.ietf.org/html/rfc2119) (Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997).
The key words "unspecified", "undefined", and "implementation-defined" are to be interpreted as described in the [rationale for the C99 standard][c99-unspecified].
# Overview
At a high level the image manifest contains metadata about the contents and dependencies of the image including the content-addressable identity of one or more [filesystem layer changeset](layer.md) archives that will be unpacked to make up the final runnable filesystem.
The image configuration includes information such as application arguments, environments, etc.
![](img/build-diagram.png)
Once built the OCI Image can then be discovered by name, downloaded, verified by hash, trusted through a signature, and unpacked into an [OCI Runtime Bundle](https://github.com/opencontainers/runtime-spec/blob/master/bundle.md).
![](img/run-diagram.png)
## Understanding the Specification
The [OCI Image Media Types](media-types.md) document is a starting point to understanding the overall structure of the specification.
The high-level components of the spec include:
* An archival format for container images, consisting of an [image manifest](manifest.md), an [image layout](image-layout.md), a set of [filesystem layers](layer.md), and [image configuration](config.md) (base OCI layer)
* A [process of referencing container images by a cryptographic hash of their content](descriptor.md) (base OCI layer)
* A format for [storing CAS blobs and references to them](image-layout.md) (optional OCI layer)
* Signatures that are based on signing image content address (optional OCI layer)
* Naming that is federated based on DNS and can be delegated (optional OCI layer)
[c99-unspecified]: http://www.open-std.org/jtc1/sc22/wg14/www/C99RationaleV5.10.pdf#page=18

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
// ImageConfig defines the execution parameters which should be used as a base when running a container using an image.
type ImageConfig struct {
// User defines the username or UID which the process in the container should run as.
User string `json:"User,omitempty"`
// Memory defines the memory limit.
Memory int64 `json:"Memory,omitempty"`
// MemorySwap defines the total memory usage limit (memory + swap).
MemorySwap int64 `json:"MemorySwap,omitempty"`
// CPUShares is the CPU shares (relative weight vs. other containers).
CPUShares int64 `json:"CpuShares,omitempty"`
// ExposedPorts a set of ports to expose from a container running this image.
ExposedPorts map[string]struct{} `json:"ExposedPorts,omitempty"`
// Env is a list of environment variables to be used in a container.
Env []string `json:"Env,omitempty"`
// Entrypoint defines a list of arguments to use as the command to execute when the container starts.
Entrypoint []string `json:"Entrypoint,omitempty"`
// Cmd defines the default arguments to the entrypoint of the container.
Cmd []string `json:"Cmd,omitempty"`
// Volumes is a set of directories which should be created as data volumes in a container running this image.
Volumes map[string]struct{} `json:"Volumes,omitempty"`
// WorkingDir sets the current working directory of the entrypoint process in the container.
WorkingDir string `json:"WorkingDir,omitempty"`
}
// RootFS describes a layer content addresses
type RootFS struct {
// Type is the type of the rootfs.
Type string `json:"type"`
// DiffIDs is an array of layer content hashes (DiffIDs), in order from bottom-most to top-most.
DiffIDs []string `json:"diff_ids"`
}
// History describes the history of a layer.
type History struct {
// Created is the creation time.
Created string `json:"created,omitempty"`
// CreatedBy is the command which created the layer.
CreatedBy string `json:"created_by,omitempty"`
// Author is the author of the build point.
Author string `json:"author,omitempty"`
// Comment is a custom message set when creating the layer.
Comment string `json:"comment,omitempty"`
// EmptyLayer is used to mark if the history item created a filesystem diff.
EmptyLayer bool `json:"empty_layer,omitempty"`
}
// Image is the JSON structure which describes some basic information about the image.
type Image struct {
// Created defines an ISO-8601 formatted combined date and time at which the image was created.
Created string `json:"created,omitempty"`
// Author defines the name and/or email address of the person or entity which created and is responsible for maintaining the image.
Author string `json:"author,omitempty"`
// Architecture is the CPU architecture which the binaries in this image are built to run on.
Architecture string `json:"architecture"`
// OS is the name of the operating system which the image is built to run on.
OS string `json:"os"`
// Config defines the execution parameters which should be used as a base when running a container using the image.
Config ImageConfig `json:"config,omitempty"`
// RootFS references the layer content addresses used by the image.
RootFS RootFS `json:"rootfs"`
// History describes the history of each layer.
History []History `json:"history,omitempty"`
}

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
// Descriptor describes the disposition of targeted content.
type Descriptor struct {
// MediaType contains the MIME type of the referenced object.
MediaType string `json:"mediaType"`
// Digest is the digest of the targeted content.
Digest string `json:"digest"`
// Size specifies the size in bytes of the blob.
Size int64 `json:"size"`
// URLs specifies a list of URLs from which this object MAY be downloaded
URLs []string `json:"urls,omitempty"`
}

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
import "regexp"
// ImageLayout is the structure in the "oci-layout" file, found in the root
// of an OCI Image-layout directory.
type ImageLayout struct {
Version string `json:"imageLayoutVersion"`
}
var (
// RefsRegexp matches requirement of image-layout 'refs' charset.
RefsRegexp = regexp.MustCompile(`^[a-zA-Z0-9-._]+$`)
)

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
import "github.com/opencontainers/image-spec/specs-go"
// Manifest defines a schema2 manifest
type Manifest struct {
specs.Versioned
// Config references a configuration object for a container, by digest.
// The referenced configuration object is a JSON blob that the runtime uses to set up the container.
Config Descriptor `json:"config"`
// Layers is an indexed list of layers referenced by the manifest.
Layers []Descriptor `json:"layers"`
// Annotations contains arbitrary metadata for the manifest list.
Annotations map[string]string `json:"annotations,omitempty"`
}

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
import "github.com/opencontainers/image-spec/specs-go"
// Platform describes the platform which the image in the manifest runs on.
type Platform struct {
// Architecture field specifies the CPU architecture, for example
// `amd64` or `ppc64`.
Architecture string `json:"architecture"`
// OS specifies the operating system, for example `linux` or `windows`.
OS string `json:"os"`
// OSVersion is an optional field specifying the operating system
// version, for example `10.0.10586`.
OSVersion string `json:"os.version,omitempty"`
// OSFeatures is an optional field specifying an array of strings,
// each listing a required OS feature (for example on Windows `win32k`).
OSFeatures []string `json:"os.features,omitempty"`
// Variant is an optional field specifying a variant of the CPU, for
// example `ppc64le` to specify a little-endian version of a PowerPC CPU.
Variant string `json:"variant,omitempty"`
// Features is an optional field specifying an array of strings, each
// listing a required CPU feature (for example `sse4` or `aes`).
Features []string `json:"features,omitempty"`
}
// ManifestDescriptor describes a platform specific manifest.
type ManifestDescriptor struct {
Descriptor
// Platform describes the platform which the image in the manifest runs on.
Platform Platform `json:"platform"`
}
// ManifestList references manifests for various platforms.
type ManifestList struct {
specs.Versioned
// Manifests references platform specific manifests.
Manifests []ManifestDescriptor `json:"manifests"`
// Annotations contains arbitrary metadata for the manifest list.
Annotations map[string]string `json:"annotations,omitempty"`
}

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1
const (
// MediaTypeDescriptor specifies the media type for a content descriptor.
MediaTypeDescriptor = "application/vnd.oci.descriptor.v1+json"
// MediaTypeImageManifest specifies the media type for an image manifest.
MediaTypeImageManifest = "application/vnd.oci.image.manifest.v1+json"
// MediaTypeImageManifestList specifies the media type for an image manifest list.
MediaTypeImageManifestList = "application/vnd.oci.image.manifest.list.v1+json"
// MediaTypeImageLayer is the media type used for layers referenced by the manifest.
MediaTypeImageLayer = "application/vnd.oci.image.layer.v1.tar+gzip"
// MediaTypeImageLayerNonDistributable is the media type for layers referenced by
// the manifest but with distribution restrictions.
MediaTypeImageLayerNonDistributable = "application/vnd.oci.image.layer.nondistributable.v1.tar+gzip"
// MediaTypeImageConfig specifies the media type for the image configuration.
MediaTypeImageConfig = "application/vnd.oci.image.config.v1+json"
)

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package specs
import "fmt"
const (
// VersionMajor is for an API incompatible changes
VersionMajor = 1
// VersionMinor is for functionality in a backwards-compatible manner
VersionMinor = 0
// VersionPatch is for backwards-compatible bug fixes
VersionPatch = 0
// VersionDev indicates development branch. Releases will be empty string.
VersionDev = "-rc2-dev"
)
// Version is the specification version that the package types support.
var Version = fmt.Sprintf("%d.%d.%d%s", VersionMajor, VersionMinor, VersionPatch, VersionDev)

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// Copyright 2016 The Linux Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package specs
// Versioned provides a struct with the manifest schemaVersion and mediaType.
// Incoming content with unknown schema version can be decoded against this
// struct to check the version.
type Versioned struct {
// SchemaVersion is the image manifest schema that this image follows
SchemaVersion int `json:"schemaVersion"`
// MediaType is the media type of this schema.
MediaType string `json:"mediaType"`
}

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Copyright (c) 2015, Dave Cheney <dave@cheney.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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// Package errors provides simple error handling primitives.
//
// The traditional error handling idiom in Go is roughly akin to
//
// if err != nil {
// return err
// }
//
// which applied recursively up the call stack results in error reports
// without context or debugging information. The errors package allows
// programmers to add context to the failure path in their code in a way
// that does not destroy the original value of the error.
//
// Adding context to an error
//
// The errors.Wrap function returns a new error that adds context to the
// original error. For example
//
// _, err := ioutil.ReadAll(r)
// if err != nil {
// return errors.Wrap(err, "read failed")
// }
//
// Retrieving the cause of an error
//
// Using errors.Wrap constructs a stack of errors, adding context to the
// preceding error. Depending on the nature of the error it may be necessary
// to reverse the operation of errors.Wrap to retrieve the original error
// for inspection. Any error value which implements this interface
//
// type causer interface {
// Cause() error
// }
//
// can be inspected by errors.Cause. errors.Cause will recursively retrieve
// the topmost error which does not implement causer, which is assumed to be
// the original cause. For example:
//
// switch err := errors.Cause(err).(type) {
// case *MyError:
// // handle specifically
// default:
// // unknown error
// }
//
// causer interface is not exported by this package, but is considered a part
// of stable public API.
//
// Formatted printing of errors
//
// All error values returned from this package implement fmt.Formatter and can
// be formatted by the fmt package. The following verbs are supported
//
// %s print the error. If the error has a Cause it will be
// printed recursively
// %v see %s
// %+v extended format. Each Frame of the error's StackTrace will
// be printed in detail.
//
// Retrieving the stack trace of an error or wrapper
//
// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are
// invoked. This information can be retrieved with the following interface.
//
// type stackTracer interface {
// StackTrace() errors.StackTrace
// }
//
// Where errors.StackTrace is defined as
//
// type StackTrace []Frame
//
// The Frame type represents a call site in the stack trace. Frame supports
// the fmt.Formatter interface that can be used for printing information about
// the stack trace of this error. For example:
//
// if err, ok := err.(stackTracer); ok {
// for _, f := range err.StackTrace() {
// fmt.Printf("%+s:%d", f)
// }
// }
//
// stackTracer interface is not exported by this package, but is considered a part
// of stable public API.
//
// See the documentation for Frame.Format for more details.
package errors
import (
"fmt"
"io"
)
// New returns an error with the supplied message.
// New also records the stack trace at the point it was called.
func New(message string) error {
return &fundamental{
msg: message,
stack: callers(),
}
}
// Errorf formats according to a format specifier and returns the string
// as a value that satisfies error.
// Errorf also records the stack trace at the point it was called.
func Errorf(format string, args ...interface{}) error {
return &fundamental{
msg: fmt.Sprintf(format, args...),
stack: callers(),
}
}
// fundamental is an error that has a message and a stack, but no caller.
type fundamental struct {
msg string
*stack
}
func (f *fundamental) Error() string { return f.msg }
func (f *fundamental) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
io.WriteString(s, f.msg)
f.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, f.msg)
case 'q':
fmt.Fprintf(s, "%q", f.msg)
}
}
type withStack struct {
error
*stack
}
func (w *withStack) Cause() error { return w.error }
func (w *withStack) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v", w.Cause())
w.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, w.Error())
case 'q':
fmt.Fprintf(s, "%q", w.Error())
}
}
// Wrap returns an error annotating err with message.
// If err is nil, Wrap returns nil.
func Wrap(err error, message string) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: message,
}
return &withStack{
err,
callers(),
}
}
// Wrapf returns an error annotating err with the format specifier.
// If err is nil, Wrapf returns nil.
func Wrapf(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
return &withStack{
err,
callers(),
}
}
type withMessage struct {
cause error
msg string
}
func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
func (w *withMessage) Cause() error { return w.cause }
func (w *withMessage) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v\n", w.Cause())
io.WriteString(s, w.msg)
return
}
fallthrough
case 's', 'q':
io.WriteString(s, w.Error())
}
}
// Cause returns the underlying cause of the error, if possible.
// An error value has a cause if it implements the following
// interface:
//
// type causer interface {
// Cause() error
// }
//
// If the error does not implement Cause, the original error will
// be returned. If the error is nil, nil will be returned without further
// investigation.
func Cause(err error) error {
type causer interface {
Cause() error
}
for err != nil {
cause, ok := err.(causer)
if !ok {
break
}
err = cause.Cause()
}
return err
}

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package errors
import (
"fmt"
"io"
"path"
"runtime"
"strings"
)
// Frame represents a program counter inside a stack frame.
type Frame uintptr
// pc returns the program counter for this frame;
// multiple frames may have the same PC value.
func (f Frame) pc() uintptr { return uintptr(f) - 1 }
// file returns the full path to the file that contains the
// function for this Frame's pc.
func (f Frame) file() string {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return "unknown"
}
file, _ := fn.FileLine(f.pc())
return file
}
// line returns the line number of source code of the
// function for this Frame's pc.
func (f Frame) line() int {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return 0
}
_, line := fn.FileLine(f.pc())
return line
}
// Format formats the frame according to the fmt.Formatter interface.
//
// %s source file
// %d source line
// %n function name
// %v equivalent to %s:%d
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+s path of source file relative to the compile time GOPATH
// %+v equivalent to %+s:%d
func (f Frame) Format(s fmt.State, verb rune) {
switch verb {
case 's':
switch {
case s.Flag('+'):
pc := f.pc()
fn := runtime.FuncForPC(pc)
if fn == nil {
io.WriteString(s, "unknown")
} else {
file, _ := fn.FileLine(pc)
fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
}
default:
io.WriteString(s, path.Base(f.file()))
}
case 'd':
fmt.Fprintf(s, "%d", f.line())
case 'n':
name := runtime.FuncForPC(f.pc()).Name()
io.WriteString(s, funcname(name))
case 'v':
f.Format(s, 's')
io.WriteString(s, ":")
f.Format(s, 'd')
}
}
// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
type StackTrace []Frame
func (st StackTrace) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case s.Flag('+'):
for _, f := range st {
fmt.Fprintf(s, "\n%+v", f)
}
case s.Flag('#'):
fmt.Fprintf(s, "%#v", []Frame(st))
default:
fmt.Fprintf(s, "%v", []Frame(st))
}
case 's':
fmt.Fprintf(s, "%s", []Frame(st))
}
}
// stack represents a stack of program counters.
type stack []uintptr
func (s *stack) Format(st fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case st.Flag('+'):
for _, pc := range *s {
f := Frame(pc)
fmt.Fprintf(st, "\n%+v", f)
}
}
}
}
func (s *stack) StackTrace() StackTrace {
f := make([]Frame, len(*s))
for i := 0; i < len(f); i++ {
f[i] = Frame((*s)[i])
}
return f
}
func callers() *stack {
const depth = 32
var pcs [depth]uintptr
n := runtime.Callers(3, pcs[:])
var st stack = pcs[0:n]
return &st
}
// funcname removes the path prefix component of a function's name reported by func.Name().
func funcname(name string) string {
i := strings.LastIndex(name, "/")
name = name[i+1:]
i = strings.Index(name, ".")
return name[i+1:]
}
func trimGOPATH(name, file string) string {
// Here we want to get the source file path relative to the compile time
// GOPATH. As of Go 1.6.x there is no direct way to know the compiled
// GOPATH at runtime, but we can infer the number of path segments in the
// GOPATH. We note that fn.Name() returns the function name qualified by
// the import path, which does not include the GOPATH. Thus we can trim
// segments from the beginning of the file path until the number of path
// separators remaining is one more than the number of path separators in
// the function name. For example, given:
//
// GOPATH /home/user
// file /home/user/src/pkg/sub/file.go
// fn.Name() pkg/sub.Type.Method
//
// We want to produce:
//
// pkg/sub/file.go
//
// From this we can easily see that fn.Name() has one less path separator
// than our desired output. We count separators from the end of the file
// path until it finds two more than in the function name and then move
// one character forward to preserve the initial path segment without a
// leading separator.
const sep = "/"
goal := strings.Count(name, sep) + 2
i := len(file)
for n := 0; n < goal; n++ {
i = strings.LastIndex(file[:i], sep)
if i == -1 {
// not enough separators found, set i so that the slice expression
// below leaves file unmodified
i = -len(sep)
break
}
}
// get back to 0 or trim the leading separator
file = file[i+len(sep):]
return file
}

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vendor/github.com/opencontainers/image-spec/vendor/github.com/russross/blackfriday/LICENSE.txt generated vendored Normal file
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Blackfriday is distributed under the Simplified BSD License:
> Copyright © 2011 Russ Ross
> All rights reserved.
>
> Redistribution and use in source and binary forms, with or without
> modification, are permitted provided that the following conditions
> are met:
>
> 1. Redistributions of source code must retain the above copyright
> notice, this list of conditions and the following disclaimer.
>
> 2. Redistributions in binary form must reproduce the above
> copyright notice, this list of conditions and the following
> disclaimer in the documentation and/or other materials provided with
> the distribution.
>
> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
> POSSIBILITY OF SUCH DAMAGE.

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vendor/github.com/opencontainers/image-spec/vendor/github.com/russross/blackfriday/latex.go generated vendored Normal file
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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// LaTeX rendering backend
//
//
package blackfriday
import (
"bytes"
)
// Latex is a type that implements the Renderer interface for LaTeX output.
//
// Do not create this directly, instead use the LatexRenderer function.
type Latex struct {
}
// LatexRenderer creates and configures a Latex object, which
// satisfies the Renderer interface.
//
// flags is a set of LATEX_* options ORed together (currently no such options
// are defined).
func LatexRenderer(flags int) Renderer {
return &Latex{}
}
func (options *Latex) GetFlags() int {
return 0
}
// render code chunks using verbatim, or listings if we have a language
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, lang string) {
if lang == "" {
out.WriteString("\n\\begin{verbatim}\n")
} else {
out.WriteString("\n\\begin{lstlisting}[language=")
out.WriteString(lang)
out.WriteString("]\n")
}
out.Write(text)
if lang == "" {
out.WriteString("\n\\end{verbatim}\n")
} else {
out.WriteString("\n\\end{lstlisting}\n")
}
}
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
}
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("\n\\begin{quotation}\n")
out.Write(text)
out.WriteString("\n\\end{quotation}\n")
}
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
// a pretty lame thing to do...
out.WriteString("\n\\begin{verbatim}\n")
out.Write(text)
out.WriteString("\n\\end{verbatim}\n")
}
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
switch level {
case 1:
out.WriteString("\n\\section{")
case 2:
out.WriteString("\n\\subsection{")
case 3:
out.WriteString("\n\\subsubsection{")
case 4:
out.WriteString("\n\\paragraph{")
case 5:
out.WriteString("\n\\subparagraph{")
case 6:
out.WriteString("\n\\textbf{")
}
if !text() {
out.Truncate(marker)
return
}
out.WriteString("}\n")
}
func (options *Latex) HRule(out *bytes.Buffer) {
out.WriteString("\n\\HRule\n")
}
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\begin{enumerate}\n")
} else {
out.WriteString("\n\\begin{itemize}\n")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\end{enumerate}\n")
} else {
out.WriteString("\n\\end{itemize}\n")
}
}
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
out.WriteString("\n\\item ")
out.Write(text)
}
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
out.WriteString("\n")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("\n")
}
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
out.WriteString("\n\\begin{tabular}{")
for _, elt := range columnData {
switch elt {
case TABLE_ALIGNMENT_LEFT:
out.WriteByte('l')
case TABLE_ALIGNMENT_RIGHT:
out.WriteByte('r')
default:
out.WriteByte('c')
}
}
out.WriteString("}\n")
out.Write(header)
out.WriteString(" \\\\\n\\hline\n")
out.Write(body)
out.WriteString("\n\\end{tabular}\n")
}
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
if out.Len() > 0 {
out.WriteString(" \\\\\n")
}
out.Write(text)
}
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
// TODO: this
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
}
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
}
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
out.WriteString("\\href{")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
}
out.Write(link)
out.WriteString("}{")
out.Write(link)
out.WriteString("}")
}
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("\\texttt{")
escapeSpecialChars(out, text)
out.WriteString("}")
}
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textit{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
// treat it like a link
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(alt)
out.WriteString("}")
} else {
out.WriteString("\\includegraphics{")
out.Write(link)
out.WriteString("}")
}
}
func (options *Latex) LineBreak(out *bytes.Buffer) {
out.WriteString(" \\\\\n")
}
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(content)
out.WriteString("}")
}
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
}
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{\\textit{")
out.Write(text)
out.WriteString("}}")
}
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("\\sout{")
out.Write(text)
out.WriteString("}")
}
// TODO: this
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
}
func needsBackslash(c byte) bool {
for _, r := range []byte("_{}%$&\\~#") {
if c == r {
return true
}
}
return false
}
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
for i := 0; i < len(text); i++ {
// directly copy normal characters
org := i
for i < len(text) && !needsBackslash(text[i]) {
i++
}
if i > org {
out.Write(text[org:i])
}
// escape a character
if i >= len(text) {
break
}
out.WriteByte('\\')
out.WriteByte(text[i])
}
}
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
// TODO: convert this into a unicode character or something
out.Write(entity)
}
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
escapeSpecialChars(out, text)
}
// header and footer
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
out.WriteString("\\documentclass{article}\n")
out.WriteString("\n")
out.WriteString("\\usepackage{graphicx}\n")
out.WriteString("\\usepackage{listings}\n")
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
out.WriteString("\\usepackage[utf8]{inputenc}\n")
out.WriteString("\\usepackage{verbatim}\n")
out.WriteString("\\usepackage[normalem]{ulem}\n")
out.WriteString("\\usepackage{hyperref}\n")
out.WriteString("\n")
out.WriteString("\\hypersetup{colorlinks,%\n")
out.WriteString(" citecolor=black,%\n")
out.WriteString(" filecolor=black,%\n")
out.WriteString(" linkcolor=black,%\n")
out.WriteString(" urlcolor=black,%\n")
out.WriteString(" pdfstartview=FitH,%\n")
out.WriteString(" breaklinks=true,%\n")
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("}}\n")
out.WriteString("\n")
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
out.WriteString("\\parindent=0pt\n")
out.WriteString("\n")
out.WriteString("\\begin{document}\n")
}
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
out.WriteString("\n\\end{document}\n")
}

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vendor/github.com/opencontainers/image-spec/vendor/github.com/russross/blackfriday/smartypants.go generated vendored Normal file
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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// SmartyPants rendering
//
//
package blackfriday
import (
"bytes"
)
type smartypantsData struct {
inSingleQuote bool
inDoubleQuote bool
}
func wordBoundary(c byte) bool {
return c == 0 || isspace(c) || ispunct(c)
}
func tolower(c byte) byte {
if c >= 'A' && c <= 'Z' {
return c - 'A' + 'a'
}
return c
}
func isdigit(c byte) bool {
return c >= '0' && c <= '9'
}
func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool) bool {
// edge of the buffer is likely to be a tag that we don't get to see,
// so we treat it like text sometimes
// enumerate all sixteen possibilities for (previousChar, nextChar)
// each can be one of {0, space, punct, other}
switch {
case previousChar == 0 && nextChar == 0:
// context is not any help here, so toggle
*isOpen = !*isOpen
case isspace(previousChar) && nextChar == 0:
// [ "] might be [ "<code>foo...]
*isOpen = true
case ispunct(previousChar) && nextChar == 0:
// [!"] hmm... could be [Run!"] or [("<code>...]
*isOpen = false
case /* isnormal(previousChar) && */ nextChar == 0:
// [a"] is probably a close
*isOpen = false
case previousChar == 0 && isspace(nextChar):
// [" ] might be [...foo</code>" ]
*isOpen = false
case isspace(previousChar) && isspace(nextChar):
// [ " ] context is not any help here, so toggle
*isOpen = !*isOpen
case ispunct(previousChar) && isspace(nextChar):
// [!" ] is probably a close
*isOpen = false
case /* isnormal(previousChar) && */ isspace(nextChar):
// [a" ] this is one of the easy cases
*isOpen = false
case previousChar == 0 && ispunct(nextChar):
// ["!] hmm... could be ["$1.95] or [</code>"!...]
*isOpen = false
case isspace(previousChar) && ispunct(nextChar):
// [ "!] looks more like [ "$1.95]
*isOpen = true
case ispunct(previousChar) && ispunct(nextChar):
// [!"!] context is not any help here, so toggle
*isOpen = !*isOpen
case /* isnormal(previousChar) && */ ispunct(nextChar):
// [a"!] is probably a close
*isOpen = false
case previousChar == 0 /* && isnormal(nextChar) */ :
// ["a] is probably an open
*isOpen = true
case isspace(previousChar) /* && isnormal(nextChar) */ :
// [ "a] this is one of the easy cases
*isOpen = true
case ispunct(previousChar) /* && isnormal(nextChar) */ :
// [!"a] is probably an open
*isOpen = true
default:
// [a'b] maybe a contraction?
*isOpen = false
}
out.WriteByte('&')
if *isOpen {
out.WriteByte('l')
} else {
out.WriteByte('r')
}
out.WriteByte(quote)
out.WriteString("quo;")
return true
}
func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
t1 := tolower(text[1])
if t1 == '\'' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote) {
return 1
}
}
if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
out.WriteString("&rsquo;")
return 0
}
if len(text) >= 3 {
t2 := tolower(text[2])
if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
(len(text) < 4 || wordBoundary(text[3])) {
out.WriteString("&rsquo;")
return 0
}
}
}
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if smartQuoteHelper(out, previousChar, nextChar, 's', &smrt.inSingleQuote) {
return 0
}
out.WriteByte(text[0])
return 0
}
func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 {
t1 := tolower(text[1])
t2 := tolower(text[2])
if t1 == 'c' && t2 == ')' {
out.WriteString("&copy;")
return 2
}
if t1 == 'r' && t2 == ')' {
out.WriteString("&reg;")
return 2
}
if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
out.WriteString("&trade;")
return 3
}
}
out.WriteByte(text[0])
return 0
}
func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
if text[1] == '-' {
out.WriteString("&mdash;")
return 1
}
if wordBoundary(previousChar) && wordBoundary(text[1]) {
out.WriteString("&ndash;")
return 0
}
}
out.WriteByte(text[0])
return 0
}
func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
out.WriteString("&mdash;")
return 2
}
if len(text) >= 2 && text[1] == '-' {
out.WriteString("&ndash;")
return 1
}
out.WriteByte(text[0])
return 0
}
func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
if bytes.HasPrefix(text, []byte("&quot;")) {
nextChar := byte(0)
if len(text) >= 7 {
nextChar = text[6]
}
if smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote) {
return 5
}
}
if bytes.HasPrefix(text, []byte("&#0;")) {
return 3
}
out.WriteByte('&')
return 0
}
func smartAmp(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, 'd')
}
func smartAmpAngledQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, 'a')
}
func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
out.WriteString("&hellip;")
return 2
}
if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
out.WriteString("&hellip;")
return 4
}
out.WriteByte(text[0])
return 0
}
func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 && text[1] == '`' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote) {
return 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
// and avoid changing dates like 1/23/2005 into fractions.
numEnd := 0
for len(text) > numEnd && isdigit(text[numEnd]) {
numEnd++
}
if numEnd == 0 {
out.WriteByte(text[0])
return 0
}
denStart := numEnd + 1
if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
denStart = numEnd + 3
} else if len(text) < numEnd+2 || text[numEnd] != '/' {
out.WriteByte(text[0])
return 0
}
denEnd := denStart
for len(text) > denEnd && isdigit(text[denEnd]) {
denEnd++
}
if denEnd == denStart {
out.WriteByte(text[0])
return 0
}
if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
out.WriteString("<sup>")
out.Write(text[:numEnd])
out.WriteString("</sup>&frasl;<sub>")
out.Write(text[denStart:denEnd])
out.WriteString("</sub>")
return denEnd - 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
out.WriteString("&frac12;")
return 2
}
}
if text[0] == '1' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
out.WriteString("&frac14;")
return 2
}
}
if text[0] == '3' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
out.WriteString("&frac34;")
return 2
}
}
}
out.WriteByte(text[0])
return 0
}
func smartDoubleQuoteVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if !smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote) {
out.WriteString("&quot;")
}
return 0
}
func smartDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'd')
}
func smartAngledDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'a')
}
func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
i := 0
for i < len(text) && text[i] != '>' {
i++
}
out.Write(text[:i+1])
return i
}
type smartCallback func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int
type smartypantsRenderer [256]smartCallback
func smartypants(flags int) *smartypantsRenderer {
r := new(smartypantsRenderer)
if flags&HTML_SMARTYPANTS_ANGLED_QUOTES == 0 {
r['"'] = smartDoubleQuote
r['&'] = smartAmp
} else {
r['"'] = smartAngledDoubleQuote
r['&'] = smartAmpAngledQuote
}
r['\''] = smartSingleQuote
r['('] = smartParens
if flags&HTML_SMARTYPANTS_DASHES != 0 {
if flags&HTML_SMARTYPANTS_LATEX_DASHES == 0 {
r['-'] = smartDash
} else {
r['-'] = smartDashLatex
}
}
r['.'] = smartPeriod
if flags&HTML_SMARTYPANTS_FRACTIONS == 0 {
r['1'] = smartNumber
r['3'] = smartNumber
} else {
for ch := '1'; ch <= '9'; ch++ {
r[ch] = smartNumberGeneric
}
}
r['<'] = smartLeftAngle
r['`'] = smartBacktick
return r
}

19
vendor/github.com/opencontainers/image-spec/vendor/github.com/shurcooL/sanitized_anchor_name/LICENSE generated vendored Normal file
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Copyright (c) 2015 Dmitri Shuralyov
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

29
vendor/github.com/opencontainers/image-spec/vendor/github.com/shurcooL/sanitized_anchor_name/main.go generated vendored Normal file
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// Package sanitized_anchor_name provides a func to create sanitized anchor names.
//
// Its logic can be reused by multiple packages to create interoperable anchor names
// and links to those anchors.
//
// At this time, it does not try to ensure that generated anchor names
// are unique, that responsibility falls on the caller.
package sanitized_anchor_name // import "github.com/shurcooL/sanitized_anchor_name"
import "unicode"
// Create returns a sanitized anchor name for the given text.
func Create(text string) string {
var anchorName []rune
var futureDash = false
for _, r := range []rune(text) {
switch {
case unicode.IsLetter(r) || unicode.IsNumber(r):
if futureDash && len(anchorName) > 0 {
anchorName = append(anchorName, '-')
}
futureDash = false
anchorName = append(anchorName, unicode.ToLower(r))
default:
futureDash = true
}
}
return string(anchorName)
}

202
vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonpointer/LICENSE-APACHE-2.0.txt generated vendored Normal file
View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright 2015 xeipuuv
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

217
vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonpointer/pointer.go generated vendored Normal file
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@ -0,0 +1,217 @@
// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonpointer
// repository-desc An implementation of JSON Pointer - Go language
//
// description Main and unique file.
//
// created 25-02-2013
package gojsonpointer
import (
"errors"
"fmt"
"reflect"
"strconv"
"strings"
)
const (
const_empty_pointer = ``
const_pointer_separator = `/`
const_invalid_start = `JSON pointer must be empty or start with a "` + const_pointer_separator + `"`
)
type implStruct struct {
mode string // "SET" or "GET"
inDocument interface{}
setInValue interface{}
getOutNode interface{}
getOutKind reflect.Kind
outError error
}
func NewJsonPointer(jsonPointerString string) (JsonPointer, error) {
var p JsonPointer
err := p.parse(jsonPointerString)
return p, err
}
type JsonPointer struct {
referenceTokens []string
}
// "Constructor", parses the given string JSON pointer
func (p *JsonPointer) parse(jsonPointerString string) error {
var err error
if jsonPointerString != const_empty_pointer {
if !strings.HasPrefix(jsonPointerString, const_pointer_separator) {
err = errors.New(const_invalid_start)
} else {
referenceTokens := strings.Split(jsonPointerString, const_pointer_separator)
for _, referenceToken := range referenceTokens[1:] {
p.referenceTokens = append(p.referenceTokens, referenceToken)
}
}
}
return err
}
// Uses the pointer to retrieve a value from a JSON document
func (p *JsonPointer) Get(document interface{}) (interface{}, reflect.Kind, error) {
is := &implStruct{mode: "GET", inDocument: document}
p.implementation(is)
return is.getOutNode, is.getOutKind, is.outError
}
// Uses the pointer to update a value from a JSON document
func (p *JsonPointer) Set(document interface{}, value interface{}) (interface{}, error) {
is := &implStruct{mode: "SET", inDocument: document, setInValue: value}
p.implementation(is)
return document, is.outError
}
// Both Get and Set functions use the same implementation to avoid code duplication
func (p *JsonPointer) implementation(i *implStruct) {
kind := reflect.Invalid
// Full document when empty
if len(p.referenceTokens) == 0 {
i.getOutNode = i.inDocument
i.outError = nil
i.getOutKind = kind
i.outError = nil
return
}
node := i.inDocument
for ti, token := range p.referenceTokens {
decodedToken := decodeReferenceToken(token)
isLastToken := ti == len(p.referenceTokens)-1
rValue := reflect.ValueOf(node)
kind = rValue.Kind()
switch kind {
case reflect.Map:
m := node.(map[string]interface{})
if _, ok := m[decodedToken]; ok {
node = m[decodedToken]
if isLastToken && i.mode == "SET" {
m[decodedToken] = i.setInValue
}
} else {
i.outError = errors.New(fmt.Sprintf("Object has no key '%s'", token))
i.getOutKind = kind
i.getOutNode = nil
return
}
case reflect.Slice:
s := node.([]interface{})
tokenIndex, err := strconv.Atoi(token)
if err != nil {
i.outError = errors.New(fmt.Sprintf("Invalid array index '%s'", token))
i.getOutKind = kind
i.getOutNode = nil
return
}
sLength := len(s)
if tokenIndex < 0 || tokenIndex >= sLength {
i.outError = errors.New(fmt.Sprintf("Out of bound array[0,%d] index '%d'", sLength, tokenIndex))
i.getOutKind = kind
i.getOutNode = nil
return
}
node = s[tokenIndex]
if isLastToken && i.mode == "SET" {
s[tokenIndex] = i.setInValue
}
default:
i.outError = errors.New(fmt.Sprintf("Invalid token reference '%s'", token))
i.getOutKind = kind
i.getOutNode = nil
return
}
}
rValue := reflect.ValueOf(node)
kind = rValue.Kind()
i.getOutNode = node
i.getOutKind = kind
i.outError = nil
}
// Pointer to string representation function
func (p *JsonPointer) String() string {
if len(p.referenceTokens) == 0 {
return const_empty_pointer
}
pointerString := const_pointer_separator + strings.Join(p.referenceTokens, const_pointer_separator)
return pointerString
}
// Specific JSON pointer encoding here
// ~0 => ~
// ~1 => /
// ... and vice versa
const (
const_encoded_reference_token_0 = `~0`
const_encoded_reference_token_1 = `~1`
const_decoded_reference_token_0 = `~`
const_decoded_reference_token_1 = `/`
)
func decodeReferenceToken(token string) string {
step1 := strings.Replace(token, const_encoded_reference_token_1, const_decoded_reference_token_1, -1)
step2 := strings.Replace(step1, const_encoded_reference_token_0, const_decoded_reference_token_0, -1)
return step2
}
func encodeReferenceToken(token string) string {
step1 := strings.Replace(token, const_decoded_reference_token_1, const_encoded_reference_token_1, -1)
step2 := strings.Replace(step1, const_decoded_reference_token_0, const_encoded_reference_token_0, -1)
return step2
}

202
vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonreference/LICENSE-APACHE-2.0.txt generated vendored Normal file
View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright 2015 xeipuuv
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

141
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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonreference
// repository-desc An implementation of JSON Reference - Go language
//
// description Main and unique file.
//
// created 26-02-2013
package gojsonreference
import (
"errors"
"github.com/xeipuuv/gojsonpointer"
"net/url"
"path/filepath"
"runtime"
"strings"
)
const (
const_fragment_char = `#`
)
func NewJsonReference(jsonReferenceString string) (JsonReference, error) {
var r JsonReference
err := r.parse(jsonReferenceString)
return r, err
}
type JsonReference struct {
referenceUrl *url.URL
referencePointer gojsonpointer.JsonPointer
HasFullUrl bool
HasUrlPathOnly bool
HasFragmentOnly bool
HasFileScheme bool
HasFullFilePath bool
}
func (r *JsonReference) GetUrl() *url.URL {
return r.referenceUrl
}
func (r *JsonReference) GetPointer() *gojsonpointer.JsonPointer {
return &r.referencePointer
}
func (r *JsonReference) String() string {
if r.referenceUrl != nil {
return r.referenceUrl.String()
}
if r.HasFragmentOnly {
return const_fragment_char + r.referencePointer.String()
}
return r.referencePointer.String()
}
func (r *JsonReference) IsCanonical() bool {
return (r.HasFileScheme && r.HasFullFilePath) || (!r.HasFileScheme && r.HasFullUrl)
}
// "Constructor", parses the given string JSON reference
func (r *JsonReference) parse(jsonReferenceString string) (err error) {
r.referenceUrl, err = url.Parse(jsonReferenceString)
if err != nil {
return
}
refUrl := r.referenceUrl
if refUrl.Scheme != "" && refUrl.Host != "" {
r.HasFullUrl = true
} else {
if refUrl.Path != "" {
r.HasUrlPathOnly = true
} else if refUrl.RawQuery == "" && refUrl.Fragment != "" {
r.HasFragmentOnly = true
}
}
r.HasFileScheme = refUrl.Scheme == "file"
if runtime.GOOS == "windows" {
// on Windows, a file URL may have an extra leading slash, and if it
// doesn't then its first component will be treated as the host by the
// Go runtime
if refUrl.Host == "" && strings.HasPrefix(refUrl.Path, "/") {
r.HasFullFilePath = filepath.IsAbs(refUrl.Path[1:])
} else {
r.HasFullFilePath = filepath.IsAbs(refUrl.Host + refUrl.Path)
}
} else {
r.HasFullFilePath = filepath.IsAbs(refUrl.Path)
}
// invalid json-pointer error means url has no json-pointer fragment. simply ignore error
r.referencePointer, _ = gojsonpointer.NewJsonPointer(refUrl.Fragment)
return
}
// Creates a new reference from a parent and a child
// If the child cannot inherit from the parent, an error is returned
func (r *JsonReference) Inherits(child JsonReference) (*JsonReference, error) {
childUrl := child.GetUrl()
parentUrl := r.GetUrl()
if childUrl == nil {
return nil, errors.New("childUrl is nil!")
}
if parentUrl == nil {
return nil, errors.New("parentUrl is nil!")
}
ref, err := NewJsonReference(parentUrl.ResolveReference(childUrl).String())
if err != nil {
return nil, err
}
return &ref, err
}

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
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"Legal Entity" shall mean the union of the acting entity and all
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control with that entity. For the purposes of this definition,
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direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
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Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
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Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
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(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
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or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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(d) If the Work includes a "NOTICE" text file as part of its
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of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
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wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright 2015 xeipuuv
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonschema/errors.go generated vendored Normal file
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package gojsonschema
import (
"fmt"
"strings"
)
type (
// RequiredError. ErrorDetails: property string
RequiredError struct {
ResultErrorFields
}
// InvalidTypeError. ErrorDetails: expected, given
InvalidTypeError struct {
ResultErrorFields
}
// NumberAnyOfError. ErrorDetails: -
NumberAnyOfError struct {
ResultErrorFields
}
// NumberOneOfError. ErrorDetails: -
NumberOneOfError struct {
ResultErrorFields
}
// NumberAllOfError. ErrorDetails: -
NumberAllOfError struct {
ResultErrorFields
}
// NumberNotError. ErrorDetails: -
NumberNotError struct {
ResultErrorFields
}
// MissingDependencyError. ErrorDetails: dependency
MissingDependencyError struct {
ResultErrorFields
}
// InternalError. ErrorDetails: error
InternalError struct {
ResultErrorFields
}
// EnumError. ErrorDetails: allowed
EnumError struct {
ResultErrorFields
}
// ArrayNoAdditionalItemsError. ErrorDetails: -
ArrayNoAdditionalItemsError struct {
ResultErrorFields
}
// ArrayMinItemsError. ErrorDetails: min
ArrayMinItemsError struct {
ResultErrorFields
}
// ArrayMaxItemsError. ErrorDetails: max
ArrayMaxItemsError struct {
ResultErrorFields
}
// ItemsMustBeUniqueError. ErrorDetails: type
ItemsMustBeUniqueError struct {
ResultErrorFields
}
// ArrayMinPropertiesError. ErrorDetails: min
ArrayMinPropertiesError struct {
ResultErrorFields
}
// ArrayMaxPropertiesError. ErrorDetails: max
ArrayMaxPropertiesError struct {
ResultErrorFields
}
// AdditionalPropertyNotAllowedError. ErrorDetails: property
AdditionalPropertyNotAllowedError struct {
ResultErrorFields
}
// InvalidPropertyPatternError. ErrorDetails: property, pattern
InvalidPropertyPatternError struct {
ResultErrorFields
}
// StringLengthGTEError. ErrorDetails: min
StringLengthGTEError struct {
ResultErrorFields
}
// StringLengthLTEError. ErrorDetails: max
StringLengthLTEError struct {
ResultErrorFields
}
// DoesNotMatchPatternError. ErrorDetails: pattern
DoesNotMatchPatternError struct {
ResultErrorFields
}
// DoesNotMatchFormatError. ErrorDetails: format
DoesNotMatchFormatError struct {
ResultErrorFields
}
// MultipleOfError. ErrorDetails: multiple
MultipleOfError struct {
ResultErrorFields
}
// NumberGTEError. ErrorDetails: min
NumberGTEError struct {
ResultErrorFields
}
// NumberGTError. ErrorDetails: min
NumberGTError struct {
ResultErrorFields
}
// NumberLTEError. ErrorDetails: max
NumberLTEError struct {
ResultErrorFields
}
// NumberLTError. ErrorDetails: max
NumberLTError struct {
ResultErrorFields
}
)
// newError takes a ResultError type and sets the type, context, description, details, value, and field
func newError(err ResultError, context *jsonContext, value interface{}, locale locale, details ErrorDetails) {
var t string
var d string
switch err.(type) {
case *RequiredError:
t = "required"
d = locale.Required()
case *InvalidTypeError:
t = "invalid_type"
d = locale.InvalidType()
case *NumberAnyOfError:
t = "number_any_of"
d = locale.NumberAnyOf()
case *NumberOneOfError:
t = "number_one_of"
d = locale.NumberOneOf()
case *NumberAllOfError:
t = "number_all_of"
d = locale.NumberAllOf()
case *NumberNotError:
t = "number_not"
d = locale.NumberNot()
case *MissingDependencyError:
t = "missing_dependency"
d = locale.MissingDependency()
case *InternalError:
t = "internal"
d = locale.Internal()
case *EnumError:
t = "enum"
d = locale.Enum()
case *ArrayNoAdditionalItemsError:
t = "array_no_additional_items"
d = locale.ArrayNoAdditionalItems()
case *ArrayMinItemsError:
t = "array_min_items"
d = locale.ArrayMinItems()
case *ArrayMaxItemsError:
t = "array_max_items"
d = locale.ArrayMaxItems()
case *ItemsMustBeUniqueError:
t = "unique"
d = locale.Unique()
case *ArrayMinPropertiesError:
t = "array_min_properties"
d = locale.ArrayMinProperties()
case *ArrayMaxPropertiesError:
t = "array_max_properties"
d = locale.ArrayMaxProperties()
case *AdditionalPropertyNotAllowedError:
t = "additional_property_not_allowed"
d = locale.AdditionalPropertyNotAllowed()
case *InvalidPropertyPatternError:
t = "invalid_property_pattern"
d = locale.InvalidPropertyPattern()
case *StringLengthGTEError:
t = "string_gte"
d = locale.StringGTE()
case *StringLengthLTEError:
t = "string_lte"
d = locale.StringLTE()
case *DoesNotMatchPatternError:
t = "pattern"
d = locale.DoesNotMatchPattern()
case *DoesNotMatchFormatError:
t = "format"
d = locale.DoesNotMatchFormat()
case *MultipleOfError:
t = "multiple_of"
d = locale.MultipleOf()
case *NumberGTEError:
t = "number_gte"
d = locale.NumberGTE()
case *NumberGTError:
t = "number_gt"
d = locale.NumberGT()
case *NumberLTEError:
t = "number_lte"
d = locale.NumberLTE()
case *NumberLTError:
t = "number_lt"
d = locale.NumberLT()
}
err.SetType(t)
err.SetContext(context)
err.SetValue(value)
err.SetDetails(details)
details["field"] = err.Field()
err.SetDescription(formatErrorDescription(d, details))
}
// formatErrorDescription takes a string in this format: %field% is required
// and converts it to a string with replacements. The fields come from
// the ErrorDetails struct and vary for each type of error.
func formatErrorDescription(s string, details ErrorDetails) string {
for name, val := range details {
s = strings.Replace(s, "%"+strings.ToLower(name)+"%", fmt.Sprintf("%v", val), -1)
}
return s
}

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package gojsonschema
import (
"net"
"net/url"
"reflect"
"regexp"
"strings"
"time"
)
type (
// FormatChecker is the interface all formatters added to FormatCheckerChain must implement
FormatChecker interface {
IsFormat(input string) bool
}
// FormatCheckerChain holds the formatters
FormatCheckerChain struct {
formatters map[string]FormatChecker
}
// EmailFormatter verifies email address formats
EmailFormatChecker struct{}
// IPV4FormatChecker verifies IP addresses in the ipv4 format
IPV4FormatChecker struct{}
// IPV6FormatChecker verifies IP addresses in the ipv6 format
IPV6FormatChecker struct{}
// DateTimeFormatChecker verifies date/time formats per RFC3339 5.6
//
// Valid formats:
// Partial Time: HH:MM:SS
// Full Date: YYYY-MM-DD
// Full Time: HH:MM:SSZ-07:00
// Date Time: YYYY-MM-DDTHH:MM:SSZ-0700
//
// Where
// YYYY = 4DIGIT year
// MM = 2DIGIT month ; 01-12
// DD = 2DIGIT day-month ; 01-28, 01-29, 01-30, 01-31 based on month/year
// HH = 2DIGIT hour ; 00-23
// MM = 2DIGIT ; 00-59
// SS = 2DIGIT ; 00-58, 00-60 based on leap second rules
// T = Literal
// Z = Literal
//
// Note: Nanoseconds are also suported in all formats
//
// http://tools.ietf.org/html/rfc3339#section-5.6
DateTimeFormatChecker struct{}
// URIFormatCheckers validates a URI with a valid Scheme per RFC3986
URIFormatChecker struct{}
// HostnameFormatChecker validates a hostname is in the correct format
HostnameFormatChecker struct{}
// UUIDFormatChecker validates a UUID is in the correct format
UUIDFormatChecker struct{}
)
var (
// Formatters holds the valid formatters, and is a public variable
// so library users can add custom formatters
FormatCheckers = FormatCheckerChain{
formatters: map[string]FormatChecker{
"date-time": DateTimeFormatChecker{},
"hostname": HostnameFormatChecker{},
"email": EmailFormatChecker{},
"ipv4": IPV4FormatChecker{},
"ipv6": IPV6FormatChecker{},
"uri": URIFormatChecker{},
"uuid": UUIDFormatChecker{},
},
}
// Regex credit: https://github.com/asaskevich/govalidator
rxEmail = regexp.MustCompile("^(((([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$")
// Regex credit: https://www.socketloop.com/tutorials/golang-validate-hostname
rxHostname = regexp.MustCompile(`^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$`)
rxUUID = regexp.MustCompile("^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$")
)
// Add adds a FormatChecker to the FormatCheckerChain
// The name used will be the value used for the format key in your json schema
func (c *FormatCheckerChain) Add(name string, f FormatChecker) *FormatCheckerChain {
c.formatters[name] = f
return c
}
// Remove deletes a FormatChecker from the FormatCheckerChain (if it exists)
func (c *FormatCheckerChain) Remove(name string) *FormatCheckerChain {
delete(c.formatters, name)
return c
}
// Has checks to see if the FormatCheckerChain holds a FormatChecker with the given name
func (c *FormatCheckerChain) Has(name string) bool {
_, ok := c.formatters[name]
return ok
}
// IsFormat will check an input against a FormatChecker with the given name
// to see if it is the correct format
func (c *FormatCheckerChain) IsFormat(name string, input interface{}) bool {
f, ok := c.formatters[name]
if !ok {
return false
}
if !isKind(input, reflect.String) {
return false
}
inputString := input.(string)
return f.IsFormat(inputString)
}
func (f EmailFormatChecker) IsFormat(input string) bool {
return rxEmail.MatchString(input)
}
// Credit: https://github.com/asaskevich/govalidator
func (f IPV4FormatChecker) IsFormat(input string) bool {
ip := net.ParseIP(input)
return ip != nil && strings.Contains(input, ".")
}
// Credit: https://github.com/asaskevich/govalidator
func (f IPV6FormatChecker) IsFormat(input string) bool {
ip := net.ParseIP(input)
return ip != nil && strings.Contains(input, ":")
}
func (f DateTimeFormatChecker) IsFormat(input string) bool {
formats := []string{
"15:04:05",
"15:04:05Z07:00",
"2006-01-02",
time.RFC3339,
time.RFC3339Nano,
}
for _, format := range formats {
if _, err := time.Parse(format, input); err == nil {
return true
}
}
return false
}
func (f URIFormatChecker) IsFormat(input string) bool {
u, err := url.Parse(input)
if err != nil || u.Scheme == "" {
return false
}
return true
}
func (f HostnameFormatChecker) IsFormat(input string) bool {
return rxHostname.MatchString(input) && len(input) < 256
}
func (f UUIDFormatChecker) IsFormat(input string) bool {
return rxUUID.MatchString(input)
}

37
vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonschema/internalLog.go generated vendored Normal file
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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Very simple log wrapper.
// Used for debugging/testing purposes.
//
// created 01-01-2015
package gojsonschema
import (
"log"
)
const internalLogEnabled = false
func internalLog(format string, v ...interface{}) {
log.Printf(format, v...)
}

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// Copyright 2013 MongoDB, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author tolsen
// author-github https://github.com/tolsen
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Implements a persistent (immutable w/ shared structure) singly-linked list of strings for the purpose of storing a json context
//
// created 04-09-2013
package gojsonschema
import "bytes"
// jsonContext implements a persistent linked-list of strings
type jsonContext struct {
head string
tail *jsonContext
}
func newJsonContext(head string, tail *jsonContext) *jsonContext {
return &jsonContext{head, tail}
}
// String displays the context in reverse.
// This plays well with the data structure's persistent nature with
// Cons and a json document's tree structure.
func (c *jsonContext) String(del ...string) string {
byteArr := make([]byte, 0, c.stringLen())
buf := bytes.NewBuffer(byteArr)
c.writeStringToBuffer(buf, del)
return buf.String()
}
func (c *jsonContext) stringLen() int {
length := 0
if c.tail != nil {
length = c.tail.stringLen() + 1 // add 1 for "."
}
length += len(c.head)
return length
}
func (c *jsonContext) writeStringToBuffer(buf *bytes.Buffer, del []string) {
if c.tail != nil {
c.tail.writeStringToBuffer(buf, del)
if len(del) > 0 {
buf.WriteString(del[0])
} else {
buf.WriteString(".")
}
}
buf.WriteString(c.head)
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Different strategies to load JSON files.
// Includes References (file and HTTP), JSON strings and Go types.
//
// created 01-02-2015
package gojsonschema
import (
"bytes"
"encoding/json"
"errors"
"io"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/xeipuuv/gojsonreference"
)
var osFS = osFileSystem(os.Open)
// JSON loader interface
type JSONLoader interface {
jsonSource() interface{}
loadJSON() (interface{}, error)
loadSchema() (*Schema, error)
}
// osFileSystem is a functional wrapper for os.Open that implements http.FileSystem.
type osFileSystem func(string) (*os.File, error)
func (o osFileSystem) Open(name string) (http.File, error) {
return o(name)
}
// JSON Reference loader
// references are used to load JSONs from files and HTTP
type jsonReferenceLoader struct {
fs http.FileSystem
source string
}
func (l *jsonReferenceLoader) jsonSource() interface{} {
return l.source
}
// NewReferenceLoader returns a JSON reference loader using the given source and the local OS file system.
func NewReferenceLoader(source string) *jsonReferenceLoader {
return &jsonReferenceLoader{
fs: osFS,
source: source,
}
}
// NewReferenceLoaderFileSystem returns a JSON reference loader using the given source and file system.
func NewReferenceLoaderFileSystem(source string, fs http.FileSystem) *jsonReferenceLoader {
return &jsonReferenceLoader{
fs: fs,
source: source,
}
}
func (l *jsonReferenceLoader) loadJSON() (interface{}, error) {
var err error
reference, err := gojsonreference.NewJsonReference(l.jsonSource().(string))
if err != nil {
return nil, err
}
refToUrl := reference
refToUrl.GetUrl().Fragment = ""
var document interface{}
if reference.HasFileScheme {
filename := strings.Replace(refToUrl.String(), "file://", "", -1)
if runtime.GOOS == "windows" {
// on Windows, a file URL may have an extra leading slash, use slashes
// instead of backslashes, and have spaces escaped
if strings.HasPrefix(filename, "/") {
filename = filename[1:]
}
filename = filepath.FromSlash(filename)
filename = strings.Replace(filename, "%20", " ", -1)
}
document, err = l.loadFromFile(filename)
if err != nil {
return nil, err
}
} else {
document, err = l.loadFromHTTP(refToUrl.String())
if err != nil {
return nil, err
}
}
return document, nil
}
func (l *jsonReferenceLoader) loadSchema() (*Schema, error) {
var err error
d := Schema{}
d.pool = newSchemaPool(l.fs)
d.referencePool = newSchemaReferencePool()
d.documentReference, err = gojsonreference.NewJsonReference(l.jsonSource().(string))
if err != nil {
return nil, err
}
spd, err := d.pool.GetDocument(d.documentReference)
if err != nil {
return nil, err
}
err = d.parse(spd.Document)
if err != nil {
return nil, err
}
return &d, nil
}
func (l *jsonReferenceLoader) loadFromHTTP(address string) (interface{}, error) {
resp, err := http.Get(address)
if err != nil {
return nil, err
}
// must return HTTP Status 200 OK
if resp.StatusCode != http.StatusOK {
return nil, errors.New(formatErrorDescription(Locale.httpBadStatus(), ErrorDetails{"status": resp.Status}))
}
bodyBuff, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
return decodeJsonUsingNumber(bytes.NewReader(bodyBuff))
}
func (l *jsonReferenceLoader) loadFromFile(path string) (interface{}, error) {
f, err := l.fs.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
bodyBuff, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
return decodeJsonUsingNumber(bytes.NewReader(bodyBuff))
}
// JSON string loader
type jsonStringLoader struct {
source string
}
func (l *jsonStringLoader) jsonSource() interface{} {
return l.source
}
func NewStringLoader(source string) *jsonStringLoader {
return &jsonStringLoader{source: source}
}
func (l *jsonStringLoader) loadJSON() (interface{}, error) {
return decodeJsonUsingNumber(strings.NewReader(l.jsonSource().(string)))
}
func (l *jsonStringLoader) loadSchema() (*Schema, error) {
var err error
document, err := l.loadJSON()
if err != nil {
return nil, err
}
d := Schema{}
d.pool = newSchemaPool(osFS)
d.referencePool = newSchemaReferencePool()
d.documentReference, err = gojsonreference.NewJsonReference("#")
d.pool.SetStandaloneDocument(document)
if err != nil {
return nil, err
}
err = d.parse(document)
if err != nil {
return nil, err
}
return &d, nil
}
// JSON Go (types) loader
// used to load JSONs from the code as maps, interface{}, structs ...
type jsonGoLoader struct {
source interface{}
}
func (l *jsonGoLoader) jsonSource() interface{} {
return l.source
}
func NewGoLoader(source interface{}) *jsonGoLoader {
return &jsonGoLoader{source: source}
}
func (l *jsonGoLoader) loadJSON() (interface{}, error) {
// convert it to a compliant JSON first to avoid types "mismatches"
jsonBytes, err := json.Marshal(l.jsonSource())
if err != nil {
return nil, err
}
return decodeJsonUsingNumber(bytes.NewReader(jsonBytes))
}
func (l *jsonGoLoader) loadSchema() (*Schema, error) {
var err error
document, err := l.loadJSON()
if err != nil {
return nil, err
}
d := Schema{}
d.pool = newSchemaPool(osFS)
d.referencePool = newSchemaReferencePool()
d.documentReference, err = gojsonreference.NewJsonReference("#")
d.pool.SetStandaloneDocument(document)
if err != nil {
return nil, err
}
err = d.parse(document)
if err != nil {
return nil, err
}
return &d, nil
}
func decodeJsonUsingNumber(r io.Reader) (interface{}, error) {
var document interface{}
decoder := json.NewDecoder(r)
decoder.UseNumber()
err := decoder.Decode(&document)
if err != nil {
return nil, err
}
return document, nil
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Contains const string and messages.
//
// created 01-01-2015
package gojsonschema
type (
// locale is an interface for definining custom error strings
locale interface {
Required() string
InvalidType() string
NumberAnyOf() string
NumberOneOf() string
NumberAllOf() string
NumberNot() string
MissingDependency() string
Internal() string
Enum() string
ArrayNoAdditionalItems() string
ArrayMinItems() string
ArrayMaxItems() string
Unique() string
ArrayMinProperties() string
ArrayMaxProperties() string
AdditionalPropertyNotAllowed() string
InvalidPropertyPattern() string
StringGTE() string
StringLTE() string
DoesNotMatchPattern() string
DoesNotMatchFormat() string
MultipleOf() string
NumberGTE() string
NumberGT() string
NumberLTE() string
NumberLT() string
// Schema validations
RegexPattern() string
GreaterThanZero() string
MustBeOfA() string
MustBeOfAn() string
CannotBeUsedWithout() string
CannotBeGT() string
MustBeOfType() string
MustBeValidRegex() string
MustBeValidFormat() string
MustBeGTEZero() string
KeyCannotBeGreaterThan() string
KeyItemsMustBeOfType() string
KeyItemsMustBeUnique() string
ReferenceMustBeCanonical() string
NotAValidType() string
Duplicated() string
httpBadStatus() string
// ErrorFormat
ErrorFormat() string
}
// DefaultLocale is the default locale for this package
DefaultLocale struct{}
)
func (l DefaultLocale) Required() string {
return `%property% is required`
}
func (l DefaultLocale) InvalidType() string {
return `Invalid type. Expected: %expected%, given: %given%`
}
func (l DefaultLocale) NumberAnyOf() string {
return `Must validate at least one schema (anyOf)`
}
func (l DefaultLocale) NumberOneOf() string {
return `Must validate one and only one schema (oneOf)`
}
func (l DefaultLocale) NumberAllOf() string {
return `Must validate all the schemas (allOf)`
}
func (l DefaultLocale) NumberNot() string {
return `Must not validate the schema (not)`
}
func (l DefaultLocale) MissingDependency() string {
return `Has a dependency on %dependency%`
}
func (l DefaultLocale) Internal() string {
return `Internal Error %error%`
}
func (l DefaultLocale) Enum() string {
return `%field% must be one of the following: %allowed%`
}
func (l DefaultLocale) ArrayNoAdditionalItems() string {
return `No additional items allowed on array`
}
func (l DefaultLocale) ArrayMinItems() string {
return `Array must have at least %min% items`
}
func (l DefaultLocale) ArrayMaxItems() string {
return `Array must have at most %max% items`
}
func (l DefaultLocale) Unique() string {
return `%type% items must be unique`
}
func (l DefaultLocale) ArrayMinProperties() string {
return `Must have at least %min% properties`
}
func (l DefaultLocale) ArrayMaxProperties() string {
return `Must have at most %max% properties`
}
func (l DefaultLocale) AdditionalPropertyNotAllowed() string {
return `Additional property %property% is not allowed`
}
func (l DefaultLocale) InvalidPropertyPattern() string {
return `Property "%property%" does not match pattern %pattern%`
}
func (l DefaultLocale) StringGTE() string {
return `String length must be greater than or equal to %min%`
}
func (l DefaultLocale) StringLTE() string {
return `String length must be less than or equal to %max%`
}
func (l DefaultLocale) DoesNotMatchPattern() string {
return `Does not match pattern '%pattern%'`
}
func (l DefaultLocale) DoesNotMatchFormat() string {
return `Does not match format '%format%'`
}
func (l DefaultLocale) MultipleOf() string {
return `Must be a multiple of %multiple%`
}
func (l DefaultLocale) NumberGTE() string {
return `Must be greater than or equal to %min%`
}
func (l DefaultLocale) NumberGT() string {
return `Must be greater than %min%`
}
func (l DefaultLocale) NumberLTE() string {
return `Must be less than or equal to %max%`
}
func (l DefaultLocale) NumberLT() string {
return `Must be less than %max%`
}
// Schema validators
func (l DefaultLocale) RegexPattern() string {
return `Invalid regex pattern '%pattern%'`
}
func (l DefaultLocale) GreaterThanZero() string {
return `%number% must be strictly greater than 0`
}
func (l DefaultLocale) MustBeOfA() string {
return `%x% must be of a %y%`
}
func (l DefaultLocale) MustBeOfAn() string {
return `%x% must be of an %y%`
}
func (l DefaultLocale) CannotBeUsedWithout() string {
return `%x% cannot be used without %y%`
}
func (l DefaultLocale) CannotBeGT() string {
return `%x% cannot be greater than %y%`
}
func (l DefaultLocale) MustBeOfType() string {
return `%key% must be of type %type%`
}
func (l DefaultLocale) MustBeValidRegex() string {
return `%key% must be a valid regex`
}
func (l DefaultLocale) MustBeValidFormat() string {
return `%key% must be a valid format %given%`
}
func (l DefaultLocale) MustBeGTEZero() string {
return `%key% must be greater than or equal to 0`
}
func (l DefaultLocale) KeyCannotBeGreaterThan() string {
return `%key% cannot be greater than %y%`
}
func (l DefaultLocale) KeyItemsMustBeOfType() string {
return `%key% items must be %type%`
}
func (l DefaultLocale) KeyItemsMustBeUnique() string {
return `%key% items must be unique`
}
func (l DefaultLocale) ReferenceMustBeCanonical() string {
return `Reference %reference% must be canonical`
}
func (l DefaultLocale) NotAValidType() string {
return `%type% is not a valid type -- `
}
func (l DefaultLocale) Duplicated() string {
return `%type% type is duplicated`
}
func (l DefaultLocale) httpBadStatus() string {
return `Could not read schema from HTTP, response status is %status%`
}
// Replacement options: field, description, context, value
func (l DefaultLocale) ErrorFormat() string {
return `%field%: %description%`
}
const (
STRING_NUMBER = "number"
STRING_ARRAY_OF_STRINGS = "array of strings"
STRING_ARRAY_OF_SCHEMAS = "array of schemas"
STRING_SCHEMA = "schema"
STRING_SCHEMA_OR_ARRAY_OF_STRINGS = "schema or array of strings"
STRING_PROPERTIES = "properties"
STRING_DEPENDENCY = "dependency"
STRING_PROPERTY = "property"
STRING_UNDEFINED = "undefined"
STRING_CONTEXT_ROOT = "(root)"
STRING_ROOT_SCHEMA_PROPERTY = "(root)"
)

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Result and ResultError implementations.
//
// created 01-01-2015
package gojsonschema
import (
"fmt"
"strings"
)
type (
// ErrorDetails is a map of details specific to each error.
// While the values will vary, every error will contain a "field" value
ErrorDetails map[string]interface{}
// ResultError is the interface that library errors must implement
ResultError interface {
Field() string
SetType(string)
Type() string
SetContext(*jsonContext)
Context() *jsonContext
SetDescription(string)
Description() string
SetValue(interface{})
Value() interface{}
SetDetails(ErrorDetails)
Details() ErrorDetails
}
// ResultErrorFields holds the fields for each ResultError implementation.
// ResultErrorFields implements the ResultError interface, so custom errors
// can be defined by just embedding this type
ResultErrorFields struct {
errorType string // A string with the type of error (i.e. invalid_type)
context *jsonContext // Tree like notation of the part that failed the validation. ex (root).a.b ...
description string // A human readable error message
value interface{} // Value given by the JSON file that is the source of the error
details ErrorDetails
}
Result struct {
errors []ResultError
// Scores how well the validation matched. Useful in generating
// better error messages for anyOf and oneOf.
score int
}
)
// Field outputs the field name without the root context
// i.e. firstName or person.firstName instead of (root).firstName or (root).person.firstName
func (v *ResultErrorFields) Field() string {
if p, ok := v.Details()["property"]; ok {
if str, isString := p.(string); isString {
return str
}
}
return strings.TrimPrefix(v.context.String(), STRING_ROOT_SCHEMA_PROPERTY+".")
}
func (v *ResultErrorFields) SetType(errorType string) {
v.errorType = errorType
}
func (v *ResultErrorFields) Type() string {
return v.errorType
}
func (v *ResultErrorFields) SetContext(context *jsonContext) {
v.context = context
}
func (v *ResultErrorFields) Context() *jsonContext {
return v.context
}
func (v *ResultErrorFields) SetDescription(description string) {
v.description = description
}
func (v *ResultErrorFields) Description() string {
return v.description
}
func (v *ResultErrorFields) SetValue(value interface{}) {
v.value = value
}
func (v *ResultErrorFields) Value() interface{} {
return v.value
}
func (v *ResultErrorFields) SetDetails(details ErrorDetails) {
v.details = details
}
func (v *ResultErrorFields) Details() ErrorDetails {
return v.details
}
func (v ResultErrorFields) String() string {
// as a fallback, the value is displayed go style
valueString := fmt.Sprintf("%v", v.value)
// marshal the go value value to json
if v.value == nil {
valueString = TYPE_NULL
} else {
if vs, err := marshalToJsonString(v.value); err == nil {
if vs == nil {
valueString = TYPE_NULL
} else {
valueString = *vs
}
}
}
return formatErrorDescription(Locale.ErrorFormat(), ErrorDetails{
"context": v.context.String(),
"description": v.description,
"value": valueString,
"field": v.Field(),
})
}
func (v *Result) Valid() bool {
return len(v.errors) == 0
}
func (v *Result) Errors() []ResultError {
return v.errors
}
func (v *Result) addError(err ResultError, context *jsonContext, value interface{}, details ErrorDetails) {
newError(err, context, value, Locale, details)
v.errors = append(v.errors, err)
v.score -= 2 // results in a net -1 when added to the +1 we get at the end of the validation function
}
// Used to copy errors from a sub-schema to the main one
func (v *Result) mergeErrors(otherResult *Result) {
v.errors = append(v.errors, otherResult.Errors()...)
v.score += otherResult.score
}
func (v *Result) incrementScore() {
v.score++
}

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vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonschema/schemaPool.go generated vendored Normal file
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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Defines resources pooling.
// Eases referencing and avoids downloading the same resource twice.
//
// created 26-02-2013
package gojsonschema
import (
"errors"
"net/http"
"github.com/xeipuuv/gojsonreference"
)
type schemaPoolDocument struct {
Document interface{}
}
type schemaPool struct {
schemaPoolDocuments map[string]*schemaPoolDocument
standaloneDocument interface{}
fs http.FileSystem
}
func newSchemaPool(fs http.FileSystem) *schemaPool {
p := &schemaPool{}
p.schemaPoolDocuments = make(map[string]*schemaPoolDocument)
p.standaloneDocument = nil
p.fs = fs
return p
}
func (p *schemaPool) SetStandaloneDocument(document interface{}) {
p.standaloneDocument = document
}
func (p *schemaPool) GetStandaloneDocument() (document interface{}) {
return p.standaloneDocument
}
func (p *schemaPool) GetDocument(reference gojsonreference.JsonReference) (*schemaPoolDocument, error) {
if internalLogEnabled {
internalLog("Get Document ( %s )", reference.String())
}
var err error
// It is not possible to load anything that is not canonical...
if !reference.IsCanonical() {
return nil, errors.New(formatErrorDescription(
Locale.ReferenceMustBeCanonical(),
ErrorDetails{"reference": reference},
))
}
refToUrl := reference
refToUrl.GetUrl().Fragment = ""
var spd *schemaPoolDocument
// Try to find the requested document in the pool
for k := range p.schemaPoolDocuments {
if k == refToUrl.String() {
spd = p.schemaPoolDocuments[k]
}
}
if spd != nil {
if internalLogEnabled {
internalLog(" From pool")
}
return spd, nil
}
jsonReferenceLoader := NewReferenceLoaderFileSystem(reference.String(), p.fs)
document, err := jsonReferenceLoader.loadJSON()
if err != nil {
return nil, err
}
spd = &schemaPoolDocument{Document: document}
// add the document to the pool for potential later use
p.schemaPoolDocuments[refToUrl.String()] = spd
return spd, nil
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Pool of referenced schemas.
//
// created 25-06-2013
package gojsonschema
import (
"fmt"
)
type schemaReferencePool struct {
documents map[string]*subSchema
}
func newSchemaReferencePool() *schemaReferencePool {
p := &schemaReferencePool{}
p.documents = make(map[string]*subSchema)
return p
}
func (p *schemaReferencePool) Get(ref string) (r *subSchema, o bool) {
if internalLogEnabled {
internalLog(fmt.Sprintf("Schema Reference ( %s )", ref))
}
if sch, ok := p.documents[ref]; ok {
if internalLogEnabled {
internalLog(fmt.Sprintf(" From pool"))
}
return sch, true
}
return nil, false
}
func (p *schemaReferencePool) Add(ref string, sch *subSchema) {
if internalLogEnabled {
internalLog(fmt.Sprintf("Add Schema Reference %s to pool", ref))
}
p.documents[ref] = sch
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Helper structure to handle schema types, and the combination of them.
//
// created 28-02-2013
package gojsonschema
import (
"errors"
"fmt"
"strings"
)
type jsonSchemaType struct {
types []string
}
// Is the schema typed ? that is containing at least one type
// When not typed, the schema does not need any type validation
func (t *jsonSchemaType) IsTyped() bool {
return len(t.types) > 0
}
func (t *jsonSchemaType) Add(etype string) error {
if !isStringInSlice(JSON_TYPES, etype) {
return errors.New(formatErrorDescription(Locale.NotAValidType(), ErrorDetails{"type": etype}))
}
if t.Contains(etype) {
return errors.New(formatErrorDescription(Locale.Duplicated(), ErrorDetails{"type": etype}))
}
t.types = append(t.types, etype)
return nil
}
func (t *jsonSchemaType) Contains(etype string) bool {
for _, v := range t.types {
if v == etype {
return true
}
}
return false
}
func (t *jsonSchemaType) String() string {
if len(t.types) == 0 {
return STRING_UNDEFINED // should never happen
}
// Displayed as a list [type1,type2,...]
if len(t.types) > 1 {
return fmt.Sprintf("[%s]", strings.Join(t.types, ","))
}
// Only one type: name only
return t.types[0]
}

227
vendor/github.com/opencontainers/image-spec/vendor/github.com/xeipuuv/gojsonschema/subSchema.go generated vendored Normal file
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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Defines the structure of a sub-subSchema.
// A sub-subSchema can contain other sub-schemas.
//
// created 27-02-2013
package gojsonschema
import (
"errors"
"regexp"
"strings"
"github.com/xeipuuv/gojsonreference"
)
const (
KEY_SCHEMA = "$subSchema"
KEY_ID = "$id"
KEY_REF = "$ref"
KEY_TITLE = "title"
KEY_DESCRIPTION = "description"
KEY_TYPE = "type"
KEY_ITEMS = "items"
KEY_ADDITIONAL_ITEMS = "additionalItems"
KEY_PROPERTIES = "properties"
KEY_PATTERN_PROPERTIES = "patternProperties"
KEY_ADDITIONAL_PROPERTIES = "additionalProperties"
KEY_DEFINITIONS = "definitions"
KEY_MULTIPLE_OF = "multipleOf"
KEY_MINIMUM = "minimum"
KEY_MAXIMUM = "maximum"
KEY_EXCLUSIVE_MINIMUM = "exclusiveMinimum"
KEY_EXCLUSIVE_MAXIMUM = "exclusiveMaximum"
KEY_MIN_LENGTH = "minLength"
KEY_MAX_LENGTH = "maxLength"
KEY_PATTERN = "pattern"
KEY_FORMAT = "format"
KEY_MIN_PROPERTIES = "minProperties"
KEY_MAX_PROPERTIES = "maxProperties"
KEY_DEPENDENCIES = "dependencies"
KEY_REQUIRED = "required"
KEY_MIN_ITEMS = "minItems"
KEY_MAX_ITEMS = "maxItems"
KEY_UNIQUE_ITEMS = "uniqueItems"
KEY_ENUM = "enum"
KEY_ONE_OF = "oneOf"
KEY_ANY_OF = "anyOf"
KEY_ALL_OF = "allOf"
KEY_NOT = "not"
)
type subSchema struct {
// basic subSchema meta properties
id *string
title *string
description *string
property string
// Types associated with the subSchema
types jsonSchemaType
// Reference url
ref *gojsonreference.JsonReference
// Schema referenced
refSchema *subSchema
// Json reference
subSchema *gojsonreference.JsonReference
// hierarchy
parent *subSchema
definitions map[string]*subSchema
definitionsChildren []*subSchema
itemsChildren []*subSchema
itemsChildrenIsSingleSchema bool
propertiesChildren []*subSchema
// validation : number / integer
multipleOf *float64
maximum *float64
exclusiveMaximum bool
minimum *float64
exclusiveMinimum bool
// validation : string
minLength *int
maxLength *int
pattern *regexp.Regexp
format string
// validation : object
minProperties *int
maxProperties *int
required []string
dependencies map[string]interface{}
additionalProperties interface{}
patternProperties map[string]*subSchema
// validation : array
minItems *int
maxItems *int
uniqueItems bool
additionalItems interface{}
// validation : all
enum []string
// validation : subSchema
oneOf []*subSchema
anyOf []*subSchema
allOf []*subSchema
not *subSchema
}
func (s *subSchema) AddEnum(i interface{}) error {
is, err := marshalToJsonString(i)
if err != nil {
return err
}
if isStringInSlice(s.enum, *is) {
return errors.New(formatErrorDescription(
Locale.KeyItemsMustBeUnique(),
ErrorDetails{"key": KEY_ENUM},
))
}
s.enum = append(s.enum, *is)
return nil
}
func (s *subSchema) ContainsEnum(i interface{}) (bool, error) {
is, err := marshalToJsonString(i)
if err != nil {
return false, err
}
return isStringInSlice(s.enum, *is), nil
}
func (s *subSchema) AddOneOf(subSchema *subSchema) {
s.oneOf = append(s.oneOf, subSchema)
}
func (s *subSchema) AddAllOf(subSchema *subSchema) {
s.allOf = append(s.allOf, subSchema)
}
func (s *subSchema) AddAnyOf(subSchema *subSchema) {
s.anyOf = append(s.anyOf, subSchema)
}
func (s *subSchema) SetNot(subSchema *subSchema) {
s.not = subSchema
}
func (s *subSchema) AddRequired(value string) error {
if isStringInSlice(s.required, value) {
return errors.New(formatErrorDescription(
Locale.KeyItemsMustBeUnique(),
ErrorDetails{"key": KEY_REQUIRED},
))
}
s.required = append(s.required, value)
return nil
}
func (s *subSchema) AddDefinitionChild(child *subSchema) {
s.definitionsChildren = append(s.definitionsChildren, child)
}
func (s *subSchema) AddItemsChild(child *subSchema) {
s.itemsChildren = append(s.itemsChildren, child)
}
func (s *subSchema) AddPropertiesChild(child *subSchema) {
s.propertiesChildren = append(s.propertiesChildren, child)
}
func (s *subSchema) PatternPropertiesString() string {
if s.patternProperties == nil || len(s.patternProperties) == 0 {
return STRING_UNDEFINED // should never happen
}
patternPropertiesKeySlice := []string{}
for pk, _ := range s.patternProperties {
patternPropertiesKeySlice = append(patternPropertiesKeySlice, `"`+pk+`"`)
}
if len(patternPropertiesKeySlice) == 1 {
return patternPropertiesKeySlice[0]
}
return "[" + strings.Join(patternPropertiesKeySlice, ",") + "]"
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Contains const types for schema and JSON.
//
// created 28-02-2013
package gojsonschema
const (
TYPE_ARRAY = `array`
TYPE_BOOLEAN = `boolean`
TYPE_INTEGER = `integer`
TYPE_NUMBER = `number`
TYPE_NULL = `null`
TYPE_OBJECT = `object`
TYPE_STRING = `string`
)
var JSON_TYPES []string
var SCHEMA_TYPES []string
func init() {
JSON_TYPES = []string{
TYPE_ARRAY,
TYPE_BOOLEAN,
TYPE_INTEGER,
TYPE_NUMBER,
TYPE_NULL,
TYPE_OBJECT,
TYPE_STRING}
SCHEMA_TYPES = []string{
TYPE_ARRAY,
TYPE_BOOLEAN,
TYPE_INTEGER,
TYPE_NUMBER,
TYPE_OBJECT,
TYPE_STRING}
}

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// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// author xeipuuv
// author-github https://github.com/xeipuuv
// author-mail xeipuuv@gmail.com
//
// repository-name gojsonschema
// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
//
// description Various utility functions.
//
// created 26-02-2013
package gojsonschema
import (
"encoding/json"
"fmt"
"math"
"reflect"
"strconv"
)
func isKind(what interface{}, kind reflect.Kind) bool {
return reflect.ValueOf(what).Kind() == kind
}
func existsMapKey(m map[string]interface{}, k string) bool {
_, ok := m[k]
return ok
}
func isStringInSlice(s []string, what string) bool {
for i := range s {
if s[i] == what {
return true
}
}
return false
}
func marshalToJsonString(value interface{}) (*string, error) {
mBytes, err := json.Marshal(value)
if err != nil {
return nil, err
}
sBytes := string(mBytes)
return &sBytes, nil
}
func isJsonNumber(what interface{}) bool {
switch what.(type) {
case json.Number:
return true
}
return false
}
func checkJsonNumber(what interface{}) (isValidFloat64 bool, isValidInt64 bool, isValidInt32 bool) {
jsonNumber := what.(json.Number)
f64, errFloat64 := jsonNumber.Float64()
s64 := strconv.FormatFloat(f64, 'f', -1, 64)
_, errInt64 := strconv.ParseInt(s64, 10, 64)
isValidFloat64 = errFloat64 == nil
isValidInt64 = errInt64 == nil
_, errInt32 := strconv.ParseInt(s64, 10, 32)
isValidInt32 = isValidInt64 && errInt32 == nil
return
}
// same as ECMA Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER
const (
max_json_float = float64(1<<53 - 1) // 9007199254740991.0 2^53 - 1
min_json_float = -float64(1<<53 - 1) //-9007199254740991.0 -2^53 - 1
)
func isFloat64AnInteger(f float64) bool {
if math.IsNaN(f) || math.IsInf(f, 0) || f < min_json_float || f > max_json_float {
return false
}
return f == float64(int64(f)) || f == float64(uint64(f))
}
func mustBeInteger(what interface{}) *int {
if isJsonNumber(what) {
number := what.(json.Number)
_, _, isValidInt32 := checkJsonNumber(number)
if isValidInt32 {
int64Value, err := number.Int64()
if err != nil {
return nil
}
int32Value := int(int64Value)
return &int32Value
} else {
return nil
}
}
return nil
}
func mustBeNumber(what interface{}) *float64 {
if isJsonNumber(what) {
number := what.(json.Number)
float64Value, err := number.Float64()
if err == nil {
return &float64Value
} else {
return nil
}
}
return nil
}
// formats a number so that it is displayed as the smallest string possible
func resultErrorFormatJsonNumber(n json.Number) string {
if int64Value, err := n.Int64(); err == nil {
return fmt.Sprintf("%d", int64Value)
}
float64Value, _ := n.Float64()
return fmt.Sprintf("%g", float64Value)
}
// formats a number so that it is displayed as the smallest string possible
func resultErrorFormatNumber(n float64) string {
if isFloat64AnInteger(n) {
return fmt.Sprintf("%d", int64(n))
}
return fmt.Sprintf("%g", n)
}
func convertDocumentNode(val interface{}) interface{} {
if lval, ok := val.([]interface{}); ok {
res := []interface{}{}
for _, v := range lval {
res = append(res, convertDocumentNode(v))
}
return res
}
if mval, ok := val.(map[interface{}]interface{}); ok {
res := map[string]interface{}{}
for k, v := range mval {
res[k.(string)] = convertDocumentNode(v)
}
return res
}
return val
}

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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"License" shall mean the terms and conditions for use, reproduction,
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direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
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including but not limited to software source code, documentation
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not limited to compiled object code, generated documentation,
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"Work" shall mean the work of authorship, whether in Source or
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(an example is provided in the Appendix below).
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"Contribution" shall mean any work of authorship, including
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designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
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2. Grant of Copyright License. Subject to the terms and conditions of
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5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
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Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
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6. Trademarks. This License does not grant permission to use the trade
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whether in tort (including negligence), contract, or otherwise,
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the Work or Derivative Works thereof, You may choose to offer,
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
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of your accepting any such warranty or additional liability.
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APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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vendor/github.com/opencontainers/image-spec/vendor/go4.org/errorutil/highlight.go generated vendored Normal file
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/*
Copyright 2011 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Package errorutil helps make better error messages.
package errorutil // import "go4.org/errorutil"
import (
"bufio"
"bytes"
"fmt"
"io"
"strings"
)
// HighlightBytePosition takes a reader and the location in bytes of a parse
// error (for instance, from json.SyntaxError.Offset) and returns the line, column,
// and pretty-printed context around the error with an arrow indicating the exact
// position of the syntax error.
func HighlightBytePosition(f io.Reader, pos int64) (line, col int, highlight string) {
line = 1
br := bufio.NewReader(f)
lastLine := ""
thisLine := new(bytes.Buffer)
for n := int64(0); n < pos; n++ {
b, err := br.ReadByte()
if err != nil {
break
}
if b == '\n' {
lastLine = thisLine.String()
thisLine.Reset()
line++
col = 1
} else {
col++
thisLine.WriteByte(b)
}
}
if line > 1 {
highlight += fmt.Sprintf("%5d: %s\n", line-1, lastLine)
}
highlight += fmt.Sprintf("%5d: %s\n", line, thisLine.String())
highlight += fmt.Sprintf("%s^\n", strings.Repeat(" ", col+5))
return
}

5
vendor/github.com/opencontainers/runc/.gitignore generated vendored Normal file
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vendor/pkg
/runc
Godeps/_workspace/src/github.com/opencontainers/runc
man/man8
release

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approve_by_comment: true
approve_regex: ^LGTM
reject_regex: ^Rejected
reset_on_push: true
author_approval: ignored
reviewers:
teams:
- runc-maintainers
name: default
required: 2

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## Contribution Guidelines
### Pull requests are always welcome
We are always thrilled to receive pull requests, and do our best to
process them as fast as possible. Not sure if that typo is worth a pull
request? Do it! We will appreciate it.
If your pull request is not accepted on the first try, don't be
discouraged! If there's a problem with the implementation, hopefully you
received feedback on what to improve.
We're trying very hard to keep runc lean and focused. We don't want it
to do everything for everybody. This means that we might decide against
incorporating a new feature. However, there might be a way to implement
that feature *on top of* runc.
### Conventions
Fork the repo and make changes on your fork in a feature branch:
- If it's a bugfix branch, name it XXX-something where XXX is the number of the
issue
- If it's a feature branch, create an enhancement issue to announce your
intentions, and name it XXX-something where XXX is the number of the issue.
Submit unit tests for your changes. Go has a great test framework built in; use
it! Take a look at existing tests for inspiration. Run the full test suite on
your branch before submitting a pull request.
Update the documentation when creating or modifying features. Test
your documentation changes for clarity, concision, and correctness, as
well as a clean documentation build. See ``docs/README.md`` for more
information on building the docs and how docs get released.
Write clean code. Universally formatted code promotes ease of writing, reading,
and maintenance. Always run `gofmt -s -w file.go` on each changed file before
committing your changes. Most editors have plugins that do this automatically.
Pull requests descriptions should be as clear as possible and include a
reference to all the issues that they address.
Pull requests must not contain commits from other users or branches.
Commit messages must start with a capitalized and short summary (max. 50
chars) written in the imperative, followed by an optional, more detailed
explanatory text which is separated from the summary by an empty line.
Code review comments may be added to your pull request. Discuss, then make the
suggested modifications and push additional commits to your feature branch. Be
sure to post a comment after pushing. The new commits will show up in the pull
request automatically, but the reviewers will not be notified unless you
comment.
Before the pull request is merged, make sure that you squash your commits into
logical units of work using `git rebase -i` and `git push -f`. After every
commit the test suite should be passing. Include documentation changes in the
same commit so that a revert would remove all traces of the feature or fix.
Commits that fix or close an issue should include a reference like `Closes #XXX`
or `Fixes #XXX`, which will automatically close the issue when merged.
### Sign your work
The sign-off is a simple line at the end of the explanation for the
patch, which certifies that you wrote it or otherwise have the right to
pass it on as an open-source patch. The rules are pretty simple: if you
can certify the below (from
[developercertificate.org](http://developercertificate.org/)):
```
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
```
then you just add a line to every git commit message:
Signed-off-by: Joe Smith <joe@gmail.com>
using your real name (sorry, no pseudonyms or anonymous contributions.)
You can add the sign off when creating the git commit via `git commit -s`.

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FROM golang:1.7.1
# libseccomp in jessie is not _quite_ new enough -- need backports version
RUN echo 'deb http://httpredir.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/backports.list
RUN apt-get update && apt-get install -y \
build-essential \
curl \
gawk \
iptables \
jq \
pkg-config \
libaio-dev \
libcap-dev \
libprotobuf-dev \
libprotobuf-c0-dev \
libseccomp2/jessie-backports \
libseccomp-dev/jessie-backports \
protobuf-c-compiler \
protobuf-compiler \
python-minimal \
--no-install-recommends
# install bats
RUN cd /tmp \
&& git clone https://github.com/sstephenson/bats.git \
&& cd bats \
&& git reset --hard 03608115df2071fff4eaaff1605768c275e5f81f \
&& ./install.sh /usr/local \
&& rm -rf /tmp/bats
# install criu
ENV CRIU_VERSION 1.7
RUN mkdir -p /usr/src/criu \
&& curl -sSL https://github.com/xemul/criu/archive/v${CRIU_VERSION}.tar.gz | tar -v -C /usr/src/criu/ -xz --strip-components=1 \
&& cd /usr/src/criu \
&& make install-criu
# install shfmt
RUN mkdir -p /go/src/github.com/mvdan \
&& cd /go/src/github.com/mvdan \
&& git clone https://github.com/mvdan/sh \
&& cd sh \
&& git checkout -f v0.4.0 \
&& go install ./cmd/shfmt \
&& rm -rf /go/src/github.com/mvdan
# setup a playground for us to spawn containers in
ENV ROOTFS /busybox
RUN mkdir -p ${ROOTFS} \
&& curl -o- -sSL 'https://github.com/jpetazzo/docker-busybox/raw/buildroot-2014.11/rootfs.tar' | tar -C ${ROOTFS} -xf -
COPY script/tmpmount /
WORKDIR /go/src/github.com/opencontainers/runc
ENTRYPOINT ["/tmpmount"]
ADD . /go/src/github.com/opencontainers/runc

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{
"ImportPath": "github.com/opencontainers/runc",
"GoVersion": "go1.5.3",
"GodepVersion": "v75",
"Deps": [
{
"ImportPath": "github.com/Sirupsen/logrus",
"Comment": "v0.7.3-2-g26709e2",
"Rev": "26709e2714106fb8ad40b773b711ebce25b78914"
},
{
"ImportPath": "github.com/urfave/cli",
"Comment": "v1.18.0-67-gd53eb99",
"Rev": "d53eb991652b1d438abdd34ce4bfa3ef1539108e"
},
{
"ImportPath": "github.com/coreos/go-systemd/activation",
"Comment": "v14",
"Rev": "48702e0da86bd25e76cfef347e2adeb434a0d0a6"
},
{
"ImportPath": "github.com/coreos/go-systemd/dbus",
"Comment": "v14",
"Rev": "48702e0da86bd25e76cfef347e2adeb434a0d0a6"
},
{
"ImportPath": "github.com/coreos/go-systemd/util",
"Comment": "v14",
"Rev": "48702e0da86bd25e76cfef347e2adeb434a0d0a6"
},
{
"ImportPath": "github.com/docker/docker/pkg/mount",
"Comment": "v1.4.1-4831-g0f5c9d3",
"Rev": "0f5c9d301b9b1cca66b3ea0f9dec3b5317d3686d"
},
{
"ImportPath": "github.com/docker/docker/pkg/symlink",
"Comment": "v1.4.1-4831-g0f5c9d3",
"Rev": "0f5c9d301b9b1cca66b3ea0f9dec3b5317d3686d"
},
{
"ImportPath": "github.com/docker/docker/pkg/term",
"Comment": "v1.4.1-4831-g0f5c9d3",
"Rev": "0f5c9d301b9b1cca66b3ea0f9dec3b5317d3686d"
},
{
"ImportPath": "github.com/docker/go-units",
"Comment": "v0.1.0",
"Rev": "9b001659dd36225e356b4467c465d732e745f53d"
},
{
"ImportPath": "github.com/godbus/dbus",
"Comment": "v3",
"Rev": "c7fdd8b5cd55e87b4e1f4e372cdb1db61dd6c66f"
},
{
"ImportPath": "github.com/golang/protobuf/proto",
"Rev": "f7137ae6b19afbfd61a94b746fda3b3fe0491874"
},
{
"ImportPath": "github.com/opencontainers/runtime-spec/specs-go",
"Comment": "v1.0.0-rc2-38-g1c7c27d",
"Rev": "1c7c27d043c2a5e513a44084d2b10d77d1402b8c"
},
{
"ImportPath": "github.com/seccomp/libseccomp-golang",
"Rev": "32f571b70023028bd57d9288c20efbcb237f3ce0"
},
{
"ImportPath": "github.com/syndtr/gocapability/capability",
"Rev": "e7cb7fa329f456b3855136a2642b197bad7366ba"
},
{
"ImportPath": "github.com/vishvananda/netlink",
"Rev": "1e2e08e8a2dcdacaae3f14ac44c5cfa31361f270"
},
{
"ImportPath": "github.com/mrunalp/fileutils",
"Rev": "ed869b029674c0e9ce4c0dfa781405c2d9946d08"
},
{
"ImportPath": "github.com/coreos/pkg/dlopen",
"Comment": "v3",
"Rev": "3ac0863d7acf3bc44daf49afef8919af12f704ef"
}
]
}

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This directory tree is generated automatically by godep.
Please do not edit.
See https://github.com/tools/godep for more information.

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/pkg
/bin

1
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logrus

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language: go
go:
- 1.2
- 1.3
- 1.4
- tip
install:
- go get -t ./...

7
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# 0.7.3
formatter/\*: allow configuration of timestamp layout
# 0.7.2
formatter/text: Add configuration option for time format (#158)

21
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The MIT License (MIT)
Copyright (c) 2014 Simon Eskildsen
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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