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Add glide.yaml and vendor deps

This commit is contained in:
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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"jwk": {
"crv": "P-256",
"kid": "OZ45:U3IG:TDOI:PMBD:NGP2:LDIW:II2U:PSBI:MMCZ:YZUP:TUUO:XPZT",
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},
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},
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{
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},
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},
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{
"schemaVersion": 2,
"config": {
"mediaType": "application/vnd.docker.container.image.v1+json",
"size": 7023,
"digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7"
},
"layers": [
]
}

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package manifest
const (
// TestV2S2ManifestDigest is the Docker manifest digest of "v2s2.manifest.json"
TestDockerV2S2ManifestDigest = "sha256:20bf21ed457b390829cdbeec8795a7bea1626991fda603e0d01b4e7f60427e55"
// TestV2S1ManifestDigest is the Docker manifest digest of "v2s1.manifest.json"
TestDockerV2S1ManifestDigest = "sha256:077594da70fc17ec2c93cfa4e6ed1fcc26992851fb2c71861338aaf4aa9e41b1"
// TestV2S1UnsignedManifestDigest is the Docker manifest digest of "v2s1unsigned.manifest.json"
TestDockerV2S1UnsignedManifestDigest = "sha256:077594da70fc17ec2c93cfa4e6ed1fcc26992851fb2c71861338aaf4aa9e41b1"
)

120
vendor/github.com/containers/image/manifest/manifest.go generated vendored Normal file
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package manifest
import (
"crypto/sha256"
"encoding/hex"
"encoding/json"
"github.com/docker/libtrust"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
)
// FIXME: Should we just use docker/distribution and docker/docker implementations directly?
// FIXME(runcom, mitr): should we havea mediatype pkg??
const (
// DockerV2Schema1MediaType MIME type represents Docker manifest schema 1
DockerV2Schema1MediaType = "application/vnd.docker.distribution.manifest.v1+json"
// DockerV2Schema1MediaType MIME type represents Docker manifest schema 1 with a JWS signature
DockerV2Schema1SignedMediaType = "application/vnd.docker.distribution.manifest.v1+prettyjws"
// DockerV2Schema2MediaType MIME type represents Docker manifest schema 2
DockerV2Schema2MediaType = "application/vnd.docker.distribution.manifest.v2+json"
// DockerV2Schema2ConfigMediaType is the MIME type used for schema 2 config blobs.
DockerV2Schema2ConfigMediaType = "application/vnd.docker.container.image.v1+json"
// DockerV2Schema2LayerMediaType is the MIME type used for schema 2 layers.
DockerV2Schema2LayerMediaType = "application/vnd.docker.image.rootfs.diff.tar.gzip"
// DockerV2ListMediaType MIME type represents Docker manifest schema 2 list
DockerV2ListMediaType = "application/vnd.docker.distribution.manifest.list.v2+json"
)
// DefaultRequestedManifestMIMETypes is a list of MIME types a types.ImageSource
// should request from the backend unless directed otherwise.
var DefaultRequestedManifestMIMETypes = []string{
imgspecv1.MediaTypeImageManifest,
DockerV2Schema2MediaType,
DockerV2Schema1SignedMediaType,
DockerV2Schema1MediaType,
DockerV2ListMediaType,
}
// GuessMIMEType guesses MIME type of a manifest and returns it _if it is recognized_, or "" if unknown or unrecognized.
// FIXME? We should, in general, prefer out-of-band MIME type instead of blindly parsing the manifest,
// but we may not have such metadata available (e.g. when the manifest is a local file).
func GuessMIMEType(manifest []byte) string {
// A subset of manifest fields; the rest is silently ignored by json.Unmarshal.
// Also docker/distribution/manifest.Versioned.
meta := struct {
MediaType string `json:"mediaType"`
SchemaVersion int `json:"schemaVersion"`
Signatures interface{} `json:"signatures"`
}{}
if err := json.Unmarshal(manifest, &meta); err != nil {
return ""
}
switch meta.MediaType {
case DockerV2Schema2MediaType, DockerV2ListMediaType, imgspecv1.MediaTypeImageManifest, imgspecv1.MediaTypeImageManifestList: // A recognized type.
return meta.MediaType
}
// this is the only way the function can return DockerV2Schema1MediaType, and recognizing that is essential for stripping the JWS signatures = computing the correct manifest digest.
switch meta.SchemaVersion {
case 1:
if meta.Signatures != nil {
return DockerV2Schema1SignedMediaType
}
return DockerV2Schema1MediaType
case 2: // Really should not happen, meta.MediaType should have been set. But given the data, this is our best guess.
return DockerV2Schema2MediaType
}
return ""
}
// Digest returns the a digest of a docker manifest, with any necessary implied transformations like stripping v1s1 signatures.
func Digest(manifest []byte) (string, error) {
if GuessMIMEType(manifest) == DockerV2Schema1SignedMediaType {
sig, err := libtrust.ParsePrettySignature(manifest, "signatures")
if err != nil {
return "", err
}
manifest, err = sig.Payload()
if err != nil {
// Coverage: This should never happen, libtrust's Payload() can fail only if joseBase64UrlDecode() fails, on a string
// that libtrust itself has josebase64UrlEncode()d
return "", err
}
}
hash := sha256.Sum256(manifest)
return "sha256:" + hex.EncodeToString(hash[:]), nil
}
// MatchesDigest returns true iff the manifest matches expectedDigest.
// Error may be set if this returns false.
// Note that this is not doing ConstantTimeCompare; by the time we get here, the cryptographic signature must already have been verified,
// or we are not using a cryptographic channel and the attacker can modify the digest along with the manifest blob.
func MatchesDigest(manifest []byte, expectedDigest string) (bool, error) {
// This should eventually support various digest types.
actualDigest, err := Digest(manifest)
if err != nil {
return false, err
}
return expectedDigest == actualDigest, nil
}
// AddDummyV2S1Signature adds an JWS signature with a temporary key (i.e. useless) to a v2s1 manifest.
// This is useful to make the manifest acceptable to a Docker Registry (even though nothing needs or wants the JWS signature).
func AddDummyV2S1Signature(manifest []byte) ([]byte, error) {
key, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
return nil, err // Coverage: This can fail only if rand.Reader fails.
}
js, err := libtrust.NewJSONSignature(manifest)
if err != nil {
return nil, err
}
if err := js.Sign(key); err != nil { // Coverage: This can fail basically only if rand.Reader fails.
return nil, err
}
return js.PrettySignature("signatures")
}

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@ -0,0 +1,123 @@
package manifest
import (
"crypto/sha256"
"encoding/hex"
"io/ioutil"
"path/filepath"
"testing"
"github.com/docker/libtrust"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestGuessMIMEType(t *testing.T) {
cases := []struct {
path string
mimeType string
}{
{"ociv1.manifest.json", imgspecv1.MediaTypeImageManifest},
{"ociv1list.manifest.json", imgspecv1.MediaTypeImageManifestList},
{"v2s2.manifest.json", DockerV2Schema2MediaType},
{"v2list.manifest.json", DockerV2ListMediaType},
{"v2s1.manifest.json", DockerV2Schema1SignedMediaType},
{"v2s1-unsigned.manifest.json", DockerV2Schema1MediaType},
{"v2s1-invalid-signatures.manifest.json", DockerV2Schema1SignedMediaType},
{"v2s2nomime.manifest.json", DockerV2Schema2MediaType}, // It is unclear whether this one is legal, but we should guess v2s2 if anything at all.
{"unknown-version.manifest.json", ""},
{"non-json.manifest.json", ""}, // Not a manifest (nor JSON) at all
}
for _, c := range cases {
manifest, err := ioutil.ReadFile(filepath.Join("fixtures", c.path))
require.NoError(t, err)
mimeType := GuessMIMEType(manifest)
assert.Equal(t, c.mimeType, mimeType, c.path)
}
}
func TestDigest(t *testing.T) {
cases := []struct {
path string
digest string
}{
{"v2s2.manifest.json", TestDockerV2S2ManifestDigest},
{"v2s1.manifest.json", TestDockerV2S1ManifestDigest},
{"v2s1-unsigned.manifest.json", TestDockerV2S1UnsignedManifestDigest},
}
for _, c := range cases {
manifest, err := ioutil.ReadFile(filepath.Join("fixtures", c.path))
require.NoError(t, err)
digest, err := Digest(manifest)
require.NoError(t, err)
assert.Equal(t, c.digest, digest)
}
manifest, err := ioutil.ReadFile("fixtures/v2s1-invalid-signatures.manifest.json")
require.NoError(t, err)
digest, err := Digest(manifest)
assert.Error(t, err)
digest, err = Digest([]byte{})
require.NoError(t, err)
assert.Equal(t, "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", digest)
}
func TestMatchesDigest(t *testing.T) {
cases := []struct {
path string
digest string
result bool
}{
// Success
{"v2s2.manifest.json", TestDockerV2S2ManifestDigest, true},
{"v2s1.manifest.json", TestDockerV2S1ManifestDigest, true},
// No match (switched s1/s2)
{"v2s2.manifest.json", TestDockerV2S1ManifestDigest, false},
{"v2s1.manifest.json", TestDockerV2S2ManifestDigest, false},
// Unrecognized algorithm
{"v2s2.manifest.json", "md5:2872f31c5c1f62a694fbd20c1e85257c", false},
// Mangled format
{"v2s2.manifest.json", TestDockerV2S2ManifestDigest + "abc", false},
{"v2s2.manifest.json", TestDockerV2S2ManifestDigest[:20], false},
{"v2s2.manifest.json", "", false},
}
for _, c := range cases {
manifest, err := ioutil.ReadFile(filepath.Join("fixtures", c.path))
require.NoError(t, err)
res, err := MatchesDigest(manifest, c.digest)
require.NoError(t, err)
assert.Equal(t, c.result, res)
}
manifest, err := ioutil.ReadFile("fixtures/v2s1-invalid-signatures.manifest.json")
require.NoError(t, err)
// Even a correct SHA256 hash is rejected if we can't strip the JSON signature.
hash := sha256.Sum256(manifest)
res, err := MatchesDigest(manifest, "sha256:"+hex.EncodeToString(hash[:]))
assert.False(t, res)
assert.Error(t, err)
res, err = MatchesDigest([]byte{}, "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
assert.True(t, res)
assert.NoError(t, err)
}
func TestAddDummyV2S1Signature(t *testing.T) {
manifest, err := ioutil.ReadFile("fixtures/v2s1-unsigned.manifest.json")
require.NoError(t, err)
signedManifest, err := AddDummyV2S1Signature(manifest)
require.NoError(t, err)
sig, err := libtrust.ParsePrettySignature(signedManifest, "signatures")
require.NoError(t, err)
signaturePayload, err := sig.Payload()
require.NoError(t, err)
assert.Equal(t, manifest, signaturePayload)
_, err = AddDummyV2S1Signature([]byte("}this is invalid JSON"))
assert.Error(t, err)
}