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update vendoring dependencies

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This commit is contained in:
ngtuna
2016-07-19 17:20:46 +07:00
parent daa85e2027
commit 3164cd8abb
803 changed files with 1850 additions and 337484 deletions
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vendor/github.com/docker/distribution/digest/digest.go
Generated Vendored
+18 -42
View File
@@ -1,21 +1,14 @@
package digest
import (
"bytes"
"fmt"
"hash"
"io"
"io/ioutil"
"regexp"
"strings"
"github.com/docker/docker/pkg/tarsum"
)
const (
// DigestTarSumV1EmptyTar is the digest for the empty tar file.
DigestTarSumV1EmptyTar = "tarsum.v1+sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
// DigestSha256EmptyTar is the canonical sha256 digest of empty data
DigestSha256EmptyTar = "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
)
@@ -29,18 +22,21 @@ const (
//
// sha256:7173b809ca12ec5dee4506cd86be934c4596dd234ee82c0662eac04a8c2c71dc
//
// More important for this code base, this type is compatible with tarsum
// digests. For example, the following would be a valid Digest:
//
// tarsum+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b
//
// This allows to abstract the digest behind this type and work only in those
// terms.
type Digest string
// NewDigest returns a Digest from alg and a hash.Hash object.
func NewDigest(alg Algorithm, h hash.Hash) Digest {
return Digest(fmt.Sprintf("%s:%x", alg, h.Sum(nil)))
return NewDigestFromBytes(alg, h.Sum(nil))
}
// NewDigestFromBytes returns a new digest from the byte contents of p.
// Typically, this can come from hash.Hash.Sum(...) or xxx.SumXXX(...)
// functions. This is also useful for rebuilding digests from binary
// serializations.
func NewDigestFromBytes(alg Algorithm, p []byte) Digest {
return Digest(fmt.Sprintf("%s:%x", alg, p))
}
// NewDigestFromHex returns a Digest from alg and a the hex encoded digest.
@@ -58,6 +54,9 @@ var (
// ErrDigestInvalidFormat returned when digest format invalid.
ErrDigestInvalidFormat = fmt.Errorf("invalid checksum digest format")
// ErrDigestInvalidLength returned when digest has invalid length.
ErrDigestInvalidLength = fmt.Errorf("invalid checksum digest length")
// ErrDigestUnsupported returned when the digest algorithm is unsupported.
ErrDigestUnsupported = fmt.Errorf("unsupported digest algorithm")
)
@@ -76,41 +75,15 @@ func FromReader(rd io.Reader) (Digest, error) {
return Canonical.FromReader(rd)
}
// FromTarArchive produces a tarsum digest from reader rd.
func FromTarArchive(rd io.Reader) (Digest, error) {
ts, err := tarsum.NewTarSum(rd, true, tarsum.Version1)
if err != nil {
return "", err
}
if _, err := io.Copy(ioutil.Discard, ts); err != nil {
return "", err
}
d, err := ParseDigest(ts.Sum(nil))
if err != nil {
return "", err
}
return d, nil
}
// FromBytes digests the input and returns a Digest.
func FromBytes(p []byte) (Digest, error) {
return FromReader(bytes.NewReader(p))
func FromBytes(p []byte) Digest {
return Canonical.FromBytes(p)
}
// Validate checks that the contents of d is a valid digest, returning an
// error if not.
func (d Digest) Validate() error {
s := string(d)
// Common case will be tarsum
_, err := ParseTarSum(s)
if err == nil {
return nil
}
// Continue on for general parser
if !DigestRegexpAnchored.MatchString(s) {
return ErrDigestInvalidFormat
@@ -126,8 +99,11 @@ func (d Digest) Validate() error {
return ErrDigestInvalidFormat
}
switch Algorithm(s[:i]) {
switch algorithm := Algorithm(s[:i]); algorithm {
case SHA256, SHA384, SHA512:
if algorithm.Size()*2 != len(s[i+1:]) {
return ErrDigestInvalidLength
}
break
default:
return ErrDigestUnsupported
vendor/github.com/docker/distribution/digest/digester.go
Generated Vendored
+39 -7
View File
@@ -2,6 +2,7 @@ package digest
import (
"crypto"
"fmt"
"hash"
"io"
)
@@ -13,10 +14,9 @@ type Algorithm string
// supported digest types
const (
SHA256 Algorithm = "sha256" // sha256 with hex encoding
SHA384 Algorithm = "sha384" // sha384 with hex encoding
SHA512 Algorithm = "sha512" // sha512 with hex encoding
TarsumV1SHA256 Algorithm = "tarsum+v1+sha256" // supported tarsum version, verification only
SHA256 Algorithm = "sha256" // sha256 with hex encoding
SHA384 Algorithm = "sha384" // sha384 with hex encoding
SHA512 Algorithm = "sha512" // sha512 with hex encoding
// Canonical is the primary digest algorithm used with the distribution
// project. Other digests may be used but this one is the primary storage
@@ -54,6 +54,15 @@ func (a Algorithm) String() string {
return string(a)
}
// Size returns number of bytes returned by the hash.
func (a Algorithm) Size() int {
h, ok := algorithms[a]
if !ok {
return 0
}
return h.Size()
}
// Set implemented to allow use of Algorithm as a command line flag.
func (a *Algorithm) Set(value string) error {
if value == "" {
@@ -76,11 +85,18 @@ func (a Algorithm) New() Digester {
}
}
// Hash returns a new hash as used by the algorithm. If not available, nil is
// returned. Make sure to check Available before calling.
// Hash returns a new hash as used by the algorithm. If not available, the
// method will panic. Check Algorithm.Available() before calling.
func (a Algorithm) Hash() hash.Hash {
if !a.Available() {
return nil
// NOTE(stevvooe): A missing hash is usually a programming error that
// must be resolved at compile time. We don't import in the digest
// package to allow users to choose their hash implementation (such as
// when using stevvooe/resumable or a hardware accelerated package).
//
// Applications that may want to resolve the hash at runtime should
// call Algorithm.Available before call Algorithm.Hash().
panic(fmt.Sprintf("%v not available (make sure it is imported)", a))
}
return algorithms[a].New()
@@ -97,6 +113,22 @@ func (a Algorithm) FromReader(rd io.Reader) (Digest, error) {
return digester.Digest(), nil
}
// FromBytes digests the input and returns a Digest.
func (a Algorithm) FromBytes(p []byte) Digest {
digester := a.New()
if _, err := digester.Hash().Write(p); err != nil {
// Writes to a Hash should never fail. None of the existing
// hash implementations in the stdlib or hashes vendored
// here can return errors from Write. Having a panic in this
// condition instead of having FromBytes return an error value
// avoids unnecessary error handling paths in all callers.
panic("write to hash function returned error: " + err.Error())
}
return digester.Digest()
}
// TODO(stevvooe): Allow resolution of verifiers using the digest type and
// this registration system.
vendor/github.com/docker/distribution/digest/doc.go
Generated Vendored
+2 -12
View File
@@ -1,7 +1,7 @@
// Package digest provides a generalized type to opaquely represent message
// digests and their operations within the registry. The Digest type is
// designed to serve as a flexible identifier in a content-addressable system.
// More importantly, it provides tools and wrappers to work with tarsums and
// More importantly, it provides tools and wrappers to work with
// hash.Hash-based digests with little effort.
//
// Basics
@@ -16,17 +16,7 @@
// sha256:7173b809ca12ec5dee4506cd86be934c4596dd234ee82c0662eac04a8c2c71dc
//
// In this case, the string "sha256" is the algorithm and the hex bytes are
// the "digest". A tarsum example will be more illustrative of the use case
// involved in the registry:
//
// tarsum+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b
//
// For this, we consider the algorithm to be "tarsum+sha256". Prudent
// applications will favor the ParseDigest function to verify the format over
// using simple type casts. However, a normal string can be cast as a digest
// with a simple type conversion:
//
// Digest("tarsum+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b")
// the "digest".
//
// Because the Digest type is simply a string, once a valid Digest is
// obtained, comparisons are cheap, quick and simple to express with the
vendor/github.com/docker/distribution/digest/set.go
Generated Vendored
+1 -1
View File
@@ -22,7 +22,7 @@ var (
// may be easily referenced by easily referenced by a string
// representation of the digest as well as short representation.
// The uniqueness of the short representation is based on other
// digests in the set. If digests are ommited from this set,
// digests in the set. If digests are omitted from this set,
// collisions in a larger set may not be detected, therefore it
// is important to always do short representation lookups on
// the complete set of digests. To mitigate collisions, an
vendor/github.com/docker/distribution/digest/tarsum.go
Generated Vendored
-70
View File
@@ -1,70 +0,0 @@
package digest
import (
"fmt"
"regexp"
)
// TarsumRegexp defines a regular expression to match tarsum identifiers.
var TarsumRegexp = regexp.MustCompile("tarsum(?:.[a-z0-9]+)?\\+[a-zA-Z0-9]+:[A-Fa-f0-9]+")
// TarsumRegexpCapturing defines a regular expression to match tarsum identifiers with
// capture groups corresponding to each component.
var TarsumRegexpCapturing = regexp.MustCompile("(tarsum)(.([a-z0-9]+))?\\+([a-zA-Z0-9]+):([A-Fa-f0-9]+)")
// TarSumInfo contains information about a parsed tarsum.
type TarSumInfo struct {
// Version contains the version of the tarsum.
Version string
// Algorithm contains the algorithm for the final digest
Algorithm string
// Digest contains the hex-encoded digest.
Digest string
}
// InvalidTarSumError provides informations about a TarSum that cannot be parsed
// by ParseTarSum.
type InvalidTarSumError string
func (e InvalidTarSumError) Error() string {
return fmt.Sprintf("invalid tarsum: %q", string(e))
}
// ParseTarSum parses a tarsum string into its components of interest. For
// example, this method may receive the tarsum in the following format:
//
// tarsum.v1+sha256:220a60ecd4a3c32c282622a625a54db9ba0ff55b5ba9c29c7064a2bc358b6a3e
//
// The function will return the following:
//
// TarSumInfo{
// Version: "v1",
// Algorithm: "sha256",
// Digest: "220a60ecd4a3c32c282622a625a54db9ba0ff55b5ba9c29c7064a2bc358b6a3e",
// }
//
func ParseTarSum(tarSum string) (tsi TarSumInfo, err error) {
components := TarsumRegexpCapturing.FindStringSubmatch(tarSum)
if len(components) != 1+TarsumRegexpCapturing.NumSubexp() {
return TarSumInfo{}, InvalidTarSumError(tarSum)
}
return TarSumInfo{
Version: components[3],
Algorithm: components[4],
Digest: components[5],
}, nil
}
// String returns the valid, string representation of the tarsum info.
func (tsi TarSumInfo) String() string {
if tsi.Version == "" {
return fmt.Sprintf("tarsum+%s:%s", tsi.Algorithm, tsi.Digest)
}
return fmt.Sprintf("tarsum.%s+%s:%s", tsi.Version, tsi.Algorithm, tsi.Digest)
}
vendor/github.com/docker/distribution/digest/verifiers.go
Generated Vendored
+4 -82
View File
@@ -3,9 +3,6 @@ package digest
import (
"hash"
"io"
"io/ioutil"
"github.com/docker/docker/pkg/tarsum"
)
// Verifier presents a general verification interface to be used with message
@@ -27,70 +24,10 @@ func NewDigestVerifier(d Digest) (Verifier, error) {
return nil, err
}
alg := d.Algorithm()
switch alg {
case "sha256", "sha384", "sha512":
return hashVerifier{
hash: alg.Hash(),
digest: d,
}, nil
default:
// Assume we have a tarsum.
version, err := tarsum.GetVersionFromTarsum(string(d))
if err != nil {
return nil, err
}
pr, pw := io.Pipe()
// TODO(stevvooe): We may actually want to ban the earlier versions of
// tarsum. That decision may not be the place of the verifier.
ts, err := tarsum.NewTarSum(pr, true, version)
if err != nil {
return nil, err
}
// TODO(sday): Ick! A goroutine per digest verification? We'll have to
// get the tarsum library to export an io.Writer variant.
go func() {
if _, err := io.Copy(ioutil.Discard, ts); err != nil {
pr.CloseWithError(err)
} else {
pr.Close()
}
}()
return &tarsumVerifier{
digest: d,
ts: ts,
pr: pr,
pw: pw,
}, nil
}
}
// NewLengthVerifier returns a verifier that returns true when the number of
// read bytes equals the expected parameter.
func NewLengthVerifier(expected int64) Verifier {
return &lengthVerifier{
expected: expected,
}
}
type lengthVerifier struct {
expected int64 // expected bytes read
len int64 // bytes read
}
func (lv *lengthVerifier) Write(p []byte) (n int, err error) {
n = len(p)
lv.len += int64(n)
return n, err
}
func (lv *lengthVerifier) Verified() bool {
return lv.expected == lv.len
return hashVerifier{
hash: d.Algorithm().Hash(),
digest: d,
}, nil
}
type hashVerifier struct {
@@ -105,18 +42,3 @@ func (hv hashVerifier) Write(p []byte) (n int, err error) {
func (hv hashVerifier) Verified() bool {
return hv.digest == NewDigest(hv.digest.Algorithm(), hv.hash)
}
type tarsumVerifier struct {
digest Digest
ts tarsum.TarSum
pr *io.PipeReader
pw *io.PipeWriter
}
func (tv *tarsumVerifier) Write(p []byte) (n int, err error) {
return tv.pw.Write(p)
}
func (tv *tarsumVerifier) Verified() bool {
return tv.digest == Digest(tv.ts.Sum(nil))
}