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Update vendor dependencies

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Signed-off-by: Emile Vauge <emile@vauge.com>
This commit is contained in:
Emile Vauge 2017-03-09 23:26:41 +01:00 • committed by Timo Reimann
parent 8401cccff2
commit 1140ee6c64
357 changed files with 0 additions and 38269 deletions
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58
vendor/github.com/docker/distribution/registry/client/auth/api_version.go generated vendored
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@ -1,58 +0,0 @@
package auth
import (
"net/http"
"strings"
)
// APIVersion represents a version of an API including its
// type and version number.
type APIVersion struct {
// Type refers to the name of a specific API specification
// such as "registry"
Type string
// Version is the version of the API specification implemented,
// This may omit the revision number and only include
// the major and minor version, such as "2.0"
Version string
}
// String returns the string formatted API Version
func (v APIVersion) String() string {
return v.Type + "/" + v.Version
}
// APIVersions gets the API versions out of an HTTP response using the provided
// version header as the key for the HTTP header.
func APIVersions(resp *http.Response, versionHeader string) []APIVersion {
versions := []APIVersion{}
if versionHeader != "" {
for _, supportedVersions := range resp.Header[http.CanonicalHeaderKey(versionHeader)] {
for _, version := range strings.Fields(supportedVersions) {
versions = append(versions, ParseAPIVersion(version))
}
}
}
return versions
}
// ParseAPIVersion parses an API version string into an APIVersion
// Format (Expected, not enforced):
// API version string = <API type> '/' <API version>
// API type = [a-z][a-z0-9]*
// API version = [0-9]+(\.[0-9]+)?
// TODO(dmcgowan): Enforce format, add error condition, remove unknown type
func ParseAPIVersion(versionStr string) APIVersion {
idx := strings.IndexRune(versionStr, '/')
if idx == -1 {
return APIVersion{
Type: "unknown",
Version: versionStr,
}
}
return APIVersion{
Type: strings.ToLower(versionStr[:idx]),
Version: versionStr[idx+1:],
}
}

27
vendor/github.com/docker/distribution/registry/client/auth/challenge/addr.go generated vendored
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@ -1,27 +0,0 @@
package challenge
import (
"net/url"
"strings"
)
// FROM: https://golang.org/src/net/http/http.go
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
// return true if the string includes a port.
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
// FROM: http://golang.org/src/net/http/transport.go
var portMap = map[string]string{
"http": "80",
"https": "443",
}
// canonicalAddr returns url.Host but always with a ":port" suffix
// FROM: http://golang.org/src/net/http/transport.go
func canonicalAddr(url *url.URL) string {
addr := url.Host
if !hasPort(addr) {
return addr + ":" + portMap[url.Scheme]
}
return addr
}

237
vendor/github.com/docker/distribution/registry/client/auth/challenge/authchallenge.go generated vendored
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@ -1,237 +0,0 @@
package challenge
import (
"fmt"
"net/http"
"net/url"
"strings"
"sync"
)
// Challenge carries information from a WWW-Authenticate response header.
// See RFC 2617.
type Challenge struct {
// Scheme is the auth-scheme according to RFC 2617
Scheme string
// Parameters are the auth-params according to RFC 2617
Parameters map[string]string
}
// Manager manages the challenges for endpoints.
// The challenges are pulled out of HTTP responses. Only
// responses which expect challenges should be added to
// the manager, since a non-unauthorized request will be
// viewed as not requiring challenges.
type Manager interface {
// GetChallenges returns the challenges for the given
// endpoint URL.
GetChallenges(endpoint url.URL) ([]Challenge, error)
// AddResponse adds the response to the challenge
// manager. The challenges will be parsed out of
// the WWW-Authenicate headers and added to the
// URL which was produced the response. If the
// response was authorized, any challenges for the
// endpoint will be cleared.
AddResponse(resp *http.Response) error
}
// NewSimpleManager returns an instance of
// Manger which only maps endpoints to challenges
// based on the responses which have been added the
// manager. The simple manager will make no attempt to
// perform requests on the endpoints or cache the responses
// to a backend.
func NewSimpleManager() Manager {
return &simpleManager{
Challanges: make(map[string][]Challenge),
}
}
type simpleManager struct {
sync.RWMutex
Challanges map[string][]Challenge
}
func normalizeURL(endpoint *url.URL) {
endpoint.Host = strings.ToLower(endpoint.Host)
endpoint.Host = canonicalAddr(endpoint)
}
func (m *simpleManager) GetChallenges(endpoint url.URL) ([]Challenge, error) {
normalizeURL(&endpoint)
m.RLock()
defer m.RUnlock()
challenges := m.Challanges[endpoint.String()]
return challenges, nil
}
func (m *simpleManager) AddResponse(resp *http.Response) error {
challenges := ResponseChallenges(resp)
if resp.Request == nil {
return fmt.Errorf("missing request reference")
}
urlCopy := url.URL{
Path: resp.Request.URL.Path,
Host: resp.Request.URL.Host,
Scheme: resp.Request.URL.Scheme,
}
normalizeURL(&urlCopy)
m.Lock()
defer m.Unlock()
m.Challanges[urlCopy.String()] = challenges
return nil
}
// Octet types from RFC 2616.
type octetType byte
var octetTypes [256]octetType
const (
isToken octetType = 1 << iota
isSpace
)
func init() {
// OCTET = <any 8-bit sequence of data>
// CHAR = <any US-ASCII character (octets 0 - 127)>
// CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
// CR = <US-ASCII CR, carriage return (13)>
// LF = <US-ASCII LF, linefeed (10)>
// SP = <US-ASCII SP, space (32)>
// HT = <US-ASCII HT, horizontal-tab (9)>
// <"> = <US-ASCII double-quote mark (34)>
// CRLF = CR LF
// LWS = [CRLF] 1*( SP | HT )
// TEXT = <any OCTET except CTLs, but including LWS>
// separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <">
// | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
// token = 1*<any CHAR except CTLs or separators>
// qdtext = <any TEXT except <">>
for c := 0; c < 256; c++ {
var t octetType
isCtl := c <= 31 || c == 127
isChar := 0 <= c && c <= 127
isSeparator := strings.IndexRune(" \t\"(),/:;<=>?@[]\\{}", rune(c)) >= 0
if strings.IndexRune(" \t\r\n", rune(c)) >= 0 {
t |= isSpace
}
if isChar && !isCtl && !isSeparator {
t |= isToken
}
octetTypes[c] = t
}
}
// ResponseChallenges returns a list of authorization challenges
// for the given http Response. Challenges are only checked if
// the response status code was a 401.
func ResponseChallenges(resp *http.Response) []Challenge {
if resp.StatusCode == http.StatusUnauthorized {
// Parse the WWW-Authenticate Header and store the challenges
// on this endpoint object.
return parseAuthHeader(resp.Header)
}
return nil
}
func parseAuthHeader(header http.Header) []Challenge {
challenges := []Challenge{}
for _, h := range header[http.CanonicalHeaderKey("WWW-Authenticate")] {
v, p := parseValueAndParams(h)
if v != "" {
challenges = append(challenges, Challenge{Scheme: v, Parameters: p})
}
}
return challenges
}
func parseValueAndParams(header string) (value string, params map[string]string) {
params = make(map[string]string)
value, s := expectToken(header)
if value == "" {
return
}
value = strings.ToLower(value)
s = "," + skipSpace(s)
for strings.HasPrefix(s, ",") {
var pkey string
pkey, s = expectToken(skipSpace(s[1:]))
if pkey == "" {
return
}
if !strings.HasPrefix(s, "=") {
return
}
var pvalue string
pvalue, s = expectTokenOrQuoted(s[1:])
if pvalue == "" {
return
}
pkey = strings.ToLower(pkey)
params[pkey] = pvalue
s = skipSpace(s)
}
return
}
func skipSpace(s string) (rest string) {
i := 0
for ; i < len(s); i++ {
if octetTypes[s[i]]&isSpace == 0 {
break
}
}
return s[i:]
}
func expectToken(s string) (token, rest string) {
i := 0
for ; i < len(s); i++ {
if octetTypes[s[i]]&isToken == 0 {
break
}
}
return s[:i], s[i:]
}
func expectTokenOrQuoted(s string) (value string, rest string) {
if !strings.HasPrefix(s, "\"") {
return expectToken(s)
}
s = s[1:]
for i := 0; i < len(s); i++ {
switch s[i] {
case '"':
return s[:i], s[i+1:]
case '\\':
p := make([]byte, len(s)-1)
j := copy(p, s[:i])
escape := true
for i = i + 1; i < len(s); i++ {
b := s[i]
switch {
case escape:
escape = false
p[j] = b
j++
case b == '\\':
escape = true
case b == '"':
return string(p[:j]), s[i+1:]
default:
p[j] = b
j++
}
}
return "", ""
}
}
return "", ""
}

503
vendor/github.com/docker/distribution/registry/client/auth/session.go generated vendored
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@ -1,503 +0,0 @@
package auth
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"net/url"
"strings"
"sync"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/registry/client"
"github.com/docker/distribution/registry/client/auth/challenge"
"github.com/docker/distribution/registry/client/transport"
)
var (
// ErrNoBasicAuthCredentials is returned if a request can't be authorized with
// basic auth due to lack of credentials.
ErrNoBasicAuthCredentials = errors.New("no basic auth credentials")
// ErrNoToken is returned if a request is successful but the body does not
// contain an authorization token.
ErrNoToken = errors.New("authorization server did not include a token in the response")
)
const defaultClientID = "registry-client"
// AuthenticationHandler is an interface for authorizing a request from
// params from a "WWW-Authenicate" header for a single scheme.
type AuthenticationHandler interface {
// Scheme returns the scheme as expected from the "WWW-Authenicate" header.
Scheme() string
// AuthorizeRequest adds the authorization header to a request (if needed)
// using the parameters from "WWW-Authenticate" method. The parameters
// values depend on the scheme.
AuthorizeRequest(req *http.Request, params map[string]string) error
}
// CredentialStore is an interface for getting credentials for
// a given URL
type CredentialStore interface {
// Basic returns basic auth for the given URL
Basic(*url.URL) (string, string)
// RefreshToken returns a refresh token for the
// given URL and service
RefreshToken(*url.URL, string) string
// SetRefreshToken sets the refresh token if none
// is provided for the given url and service
SetRefreshToken(realm *url.URL, service, token string)
}
// NewAuthorizer creates an authorizer which can handle multiple authentication
// schemes. The handlers are tried in order, the higher priority authentication
// methods should be first. The challengeMap holds a list of challenges for
// a given root API endpoint (for example "https://registry-1.docker.io/v2/").
func NewAuthorizer(manager challenge.Manager, handlers ...AuthenticationHandler) transport.RequestModifier {
return &endpointAuthorizer{
challenges: manager,
handlers: handlers,
}
}
type endpointAuthorizer struct {
challenges challenge.Manager
handlers []AuthenticationHandler
transport http.RoundTripper
}
func (ea *endpointAuthorizer) ModifyRequest(req *http.Request) error {
pingPath := req.URL.Path
if v2Root := strings.Index(req.URL.Path, "/v2/"); v2Root != -1 {
pingPath = pingPath[:v2Root+4]
} else if v1Root := strings.Index(req.URL.Path, "/v1/"); v1Root != -1 {
pingPath = pingPath[:v1Root] + "/v2/"
} else {
return nil
}
ping := url.URL{
Host: req.URL.Host,
Scheme: req.URL.Scheme,
Path: pingPath,
}
challenges, err := ea.challenges.GetChallenges(ping)
if err != nil {
return err
}
if len(challenges) > 0 {
for _, handler := range ea.handlers {
for _, c := range challenges {
if c.Scheme != handler.Scheme() {
continue
}
if err := handler.AuthorizeRequest(req, c.Parameters); err != nil {
return err
}
}
}
}
return nil
}
// This is the minimum duration a token can last (in seconds).
// A token must not live less than 60 seconds because older versions
// of the Docker client didn't read their expiration from the token
// response and assumed 60 seconds. So to remain compatible with
// those implementations, a token must live at least this long.
const minimumTokenLifetimeSeconds = 60
// Private interface for time used by this package to enable tests to provide their own implementation.
type clock interface {
Now() time.Time
}
type tokenHandler struct {
header http.Header
creds CredentialStore
transport http.RoundTripper
clock clock
offlineAccess bool
forceOAuth bool
clientID string
scopes []Scope
tokenLock sync.Mutex
tokenCache string
tokenExpiration time.Time
}
// Scope is a type which is serializable to a string
// using the allow scope grammar.
type Scope interface {
String() string
}
// RepositoryScope represents a token scope for access
// to a repository.
type RepositoryScope struct {
Repository string
Class string
Actions []string
}
// String returns the string representation of the repository
// using the scope grammar
func (rs RepositoryScope) String() string {
repoType := "repository"
if rs.Class != "" {
repoType = fmt.Sprintf("%s(%s)", repoType, rs.Class)
}
return fmt.Sprintf("%s:%s:%s", repoType, rs.Repository, strings.Join(rs.Actions, ","))
}
// RegistryScope represents a token scope for access
// to resources in the registry.
type RegistryScope struct {
Name string
Actions []string
}
// String returns the string representation of the user
// using the scope grammar
func (rs RegistryScope) String() string {
return fmt.Sprintf("registry:%s:%s", rs.Name, strings.Join(rs.Actions, ","))
}
// TokenHandlerOptions is used to configure a new token handler
type TokenHandlerOptions struct {
Transport http.RoundTripper
Credentials CredentialStore
OfflineAccess bool
ForceOAuth bool
ClientID string
Scopes []Scope
}
// An implementation of clock for providing real time data.
type realClock struct{}
// Now implements clock
func (realClock) Now() time.Time { return time.Now() }
// NewTokenHandler creates a new AuthenicationHandler which supports
// fetching tokens from a remote token server.
func NewTokenHandler(transport http.RoundTripper, creds CredentialStore, scope string, actions ...string) AuthenticationHandler {
// Create options...
return NewTokenHandlerWithOptions(TokenHandlerOptions{
Transport: transport,
Credentials: creds,
Scopes: []Scope{
RepositoryScope{
Repository: scope,
Actions: actions,
},
},
})
}
// NewTokenHandlerWithOptions creates a new token handler using the provided
// options structure.
func NewTokenHandlerWithOptions(options TokenHandlerOptions) AuthenticationHandler {
handler := &tokenHandler{
transport: options.Transport,
creds: options.Credentials,
offlineAccess: options.OfflineAccess,
forceOAuth: options.ForceOAuth,
clientID: options.ClientID,
scopes: options.Scopes,
clock: realClock{},
}
return handler
}
func (th *tokenHandler) client() *http.Client {
return &http.Client{
Transport: th.transport,
Timeout: 15 * time.Second,
}
}
func (th *tokenHandler) Scheme() string {
return "bearer"
}
func (th *tokenHandler) AuthorizeRequest(req *http.Request, params map[string]string) error {
var additionalScopes []string
if fromParam := req.URL.Query().Get("from"); fromParam != "" {
additionalScopes = append(additionalScopes, RepositoryScope{
Repository: fromParam,
Actions: []string{"pull"},
}.String())
}
token, err := th.getToken(params, additionalScopes...)
if err != nil {
return err
}
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
return nil
}
func (th *tokenHandler) getToken(params map[string]string, additionalScopes ...string) (string, error) {
th.tokenLock.Lock()
defer th.tokenLock.Unlock()
scopes := make([]string, 0, len(th.scopes)+len(additionalScopes))
for _, scope := range th.scopes {
scopes = append(scopes, scope.String())
}
var addedScopes bool
for _, scope := range additionalScopes {
scopes = append(scopes, scope)
addedScopes = true
}
now := th.clock.Now()
if now.After(th.tokenExpiration) || addedScopes {
token, expiration, err := th.fetchToken(params, scopes)
if err != nil {
return "", err
}
// do not update cache for added scope tokens
if !addedScopes {
th.tokenCache = token
th.tokenExpiration = expiration
}
return token, nil
}
return th.tokenCache, nil
}
type postTokenResponse struct {
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token"`
ExpiresIn int `json:"expires_in"`
IssuedAt time.Time `json:"issued_at"`
Scope string `json:"scope"`
}
func (th *tokenHandler) fetchTokenWithOAuth(realm *url.URL, refreshToken, service string, scopes []string) (token string, expiration time.Time, err error) {
form := url.Values{}
form.Set("scope", strings.Join(scopes, " "))
form.Set("service", service)
clientID := th.clientID
if clientID == "" {
// Use default client, this is a required field
clientID = defaultClientID
}
form.Set("client_id", clientID)
if refreshToken != "" {
form.Set("grant_type", "refresh_token")
form.Set("refresh_token", refreshToken)
} else if th.creds != nil {
form.Set("grant_type", "password")
username, password := th.creds.Basic(realm)
form.Set("username", username)
form.Set("password", password)
// attempt to get a refresh token
form.Set("access_type", "offline")
} else {
// refuse to do oauth without a grant type
return "", time.Time{}, fmt.Errorf("no supported grant type")
}
resp, err := th.client().PostForm(realm.String(), form)
if err != nil {
return "", time.Time{}, err
}
defer resp.Body.Close()
if !client.SuccessStatus(resp.StatusCode) {
err := client.HandleErrorResponse(resp)
return "", time.Time{}, err
}
decoder := json.NewDecoder(resp.Body)
var tr postTokenResponse
if err = decoder.Decode(&tr); err != nil {
return "", time.Time{}, fmt.Errorf("unable to decode token response: %s", err)
}
if tr.RefreshToken != "" && tr.RefreshToken != refreshToken {
th.creds.SetRefreshToken(realm, service, tr.RefreshToken)
}
if tr.ExpiresIn < minimumTokenLifetimeSeconds {
// The default/minimum lifetime.
tr.ExpiresIn = minimumTokenLifetimeSeconds
logrus.Debugf("Increasing token expiration to: %d seconds", tr.ExpiresIn)
}
if tr.IssuedAt.IsZero() {
// issued_at is optional in the token response.
tr.IssuedAt = th.clock.Now().UTC()
}
return tr.AccessToken, tr.IssuedAt.Add(time.Duration(tr.ExpiresIn) * time.Second), nil
}
type getTokenResponse struct {
Token string `json:"token"`
AccessToken string `json:"access_token"`
ExpiresIn int `json:"expires_in"`
IssuedAt time.Time `json:"issued_at"`
RefreshToken string `json:"refresh_token"`
}
func (th *tokenHandler) fetchTokenWithBasicAuth(realm *url.URL, service string, scopes []string) (token string, expiration time.Time, err error) {
req, err := http.NewRequest("GET", realm.String(), nil)
if err != nil {
return "", time.Time{}, err
}
reqParams := req.URL.Query()
if service != "" {
reqParams.Add("service", service)
}
for _, scope := range scopes {
reqParams.Add("scope", scope)
}
if th.offlineAccess {
reqParams.Add("offline_token", "true")
clientID := th.clientID
if clientID == "" {
clientID = defaultClientID
}
reqParams.Add("client_id", clientID)
}
if th.creds != nil {
username, password := th.creds.Basic(realm)
if username != "" && password != "" {
reqParams.Add("account", username)
req.SetBasicAuth(username, password)
}
}
req.URL.RawQuery = reqParams.Encode()
resp, err := th.client().Do(req)
if err != nil {
return "", time.Time{}, err
}
defer resp.Body.Close()
if !client.SuccessStatus(resp.StatusCode) {
err := client.HandleErrorResponse(resp)
return "", time.Time{}, err
}
decoder := json.NewDecoder(resp.Body)
var tr getTokenResponse
if err = decoder.Decode(&tr); err != nil {
return "", time.Time{}, fmt.Errorf("unable to decode token response: %s", err)
}
if tr.RefreshToken != "" && th.creds != nil {
th.creds.SetRefreshToken(realm, service, tr.RefreshToken)
}
// `access_token` is equivalent to `token` and if both are specified
// the choice is undefined. Canonicalize `access_token` by sticking
// things in `token`.
if tr.AccessToken != "" {
tr.Token = tr.AccessToken
}
if tr.Token == "" {
return "", time.Time{}, ErrNoToken
}
if tr.ExpiresIn < minimumTokenLifetimeSeconds {
// The default/minimum lifetime.
tr.ExpiresIn = minimumTokenLifetimeSeconds
logrus.Debugf("Increasing token expiration to: %d seconds", tr.ExpiresIn)
}
if tr.IssuedAt.IsZero() {
// issued_at is optional in the token response.
tr.IssuedAt = th.clock.Now().UTC()
}
return tr.Token, tr.IssuedAt.Add(time.Duration(tr.ExpiresIn) * time.Second), nil
}
func (th *tokenHandler) fetchToken(params map[string]string, scopes []string) (token string, expiration time.Time, err error) {
realm, ok := params["realm"]
if !ok {
return "", time.Time{}, errors.New("no realm specified for token auth challenge")
}
// TODO(dmcgowan): Handle empty scheme and relative realm
realmURL, err := url.Parse(realm)
if err != nil {
return "", time.Time{}, fmt.Errorf("invalid token auth challenge realm: %s", err)
}
service := params["service"]
var refreshToken string
if th.creds != nil {
refreshToken = th.creds.RefreshToken(realmURL, service)
}
if refreshToken != "" || th.forceOAuth {
return th.fetchTokenWithOAuth(realmURL, refreshToken, service, scopes)
}
return th.fetchTokenWithBasicAuth(realmURL, service, scopes)
}
type basicHandler struct {
creds CredentialStore
}
// NewBasicHandler creaters a new authentiation handler which adds
// basic authentication credentials to a request.
func NewBasicHandler(creds CredentialStore) AuthenticationHandler {
return &basicHandler{
creds: creds,
}
}
func (*basicHandler) Scheme() string {
return "basic"
}
func (bh *basicHandler) AuthorizeRequest(req *http.Request, params map[string]string) error {
if bh.creds != nil {
username, password := bh.creds.Basic(req.URL)
if username != "" && password != "" {
req.SetBasicAuth(username, password)
return nil
}
}
return ErrNoBasicAuthCredentials
}

162
vendor/github.com/docker/distribution/registry/client/blob_writer.go generated vendored
View file

@ -1,162 +0,0 @@
package client
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/http"
"time"
"github.com/docker/distribution"
"github.com/docker/distribution/context"
)
type httpBlobUpload struct {
statter distribution.BlobStatter
client *http.Client
uuid string
startedAt time.Time
location string // always the last value of the location header.
offset int64
closed bool
}
func (hbu *httpBlobUpload) Reader() (io.ReadCloser, error) {
panic("Not implemented")
}
func (hbu *httpBlobUpload) handleErrorResponse(resp *http.Response) error {
if resp.StatusCode == http.StatusNotFound {
return distribution.ErrBlobUploadUnknown
}
return HandleErrorResponse(resp)
}
func (hbu *httpBlobUpload) ReadFrom(r io.Reader) (n int64, err error) {
req, err := http.NewRequest("PATCH", hbu.location, ioutil.NopCloser(r))
if err != nil {
return 0, err
}
defer req.Body.Close()
resp, err := hbu.client.Do(req)
if err != nil {
return 0, err
}
if !SuccessStatus(resp.StatusCode) {
return 0, hbu.handleErrorResponse(resp)
}
hbu.uuid = resp.Header.Get("Docker-Upload-UUID")
hbu.location, err = sanitizeLocation(resp.Header.Get("Location"), hbu.location)
if err != nil {
return 0, err
}
rng := resp.Header.Get("Range")
var start, end int64
if n, err := fmt.Sscanf(rng, "%d-%d", &start, &end); err != nil {
return 0, err
} else if n != 2 || end < start {
return 0, fmt.Errorf("bad range format: %s", rng)
}
return (end - start + 1), nil
}
func (hbu *httpBlobUpload) Write(p []byte) (n int, err error) {
req, err := http.NewRequest("PATCH", hbu.location, bytes.NewReader(p))
if err != nil {
return 0, err
}
req.Header.Set("Content-Range", fmt.Sprintf("%d-%d", hbu.offset, hbu.offset+int64(len(p)-1)))
req.Header.Set("Content-Length", fmt.Sprintf("%d", len(p)))
req.Header.Set("Content-Type", "application/octet-stream")
resp, err := hbu.client.Do(req)
if err != nil {
return 0, err
}
if !SuccessStatus(resp.StatusCode) {
return 0, hbu.handleErrorResponse(resp)
}
hbu.uuid = resp.Header.Get("Docker-Upload-UUID")
hbu.location, err = sanitizeLocation(resp.Header.Get("Location"), hbu.location)
if err != nil {
return 0, err
}
rng := resp.Header.Get("Range")
var start, end int
if n, err := fmt.Sscanf(rng, "%d-%d", &start, &end); err != nil {
return 0, err
} else if n != 2 || end < start {
return 0, fmt.Errorf("bad range format: %s", rng)
}
return (end - start + 1), nil
}
func (hbu *httpBlobUpload) Size() int64 {
return hbu.offset
}
func (hbu *httpBlobUpload) ID() string {
return hbu.uuid
}
func (hbu *httpBlobUpload) StartedAt() time.Time {
return hbu.startedAt
}
func (hbu *httpBlobUpload) Commit(ctx context.Context, desc distribution.Descriptor) (distribution.Descriptor, error) {
// TODO(dmcgowan): Check if already finished, if so just fetch
req, err := http.NewRequest("PUT", hbu.location, nil)
if err != nil {
return distribution.Descriptor{}, err
}
values := req.URL.Query()
values.Set("digest", desc.Digest.String())
req.URL.RawQuery = values.Encode()
resp, err := hbu.client.Do(req)
if err != nil {
return distribution.Descriptor{}, err
}
defer resp.Body.Close()
if !SuccessStatus(resp.StatusCode) {
return distribution.Descriptor{}, hbu.handleErrorResponse(resp)
}
return hbu.statter.Stat(ctx, desc.Digest)
}
func (hbu *httpBlobUpload) Cancel(ctx context.Context) error {
req, err := http.NewRequest("DELETE", hbu.location, nil)
if err != nil {
return err
}
resp, err := hbu.client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusNotFound || SuccessStatus(resp.StatusCode) {
return nil
}
return hbu.handleErrorResponse(resp)
}
func (hbu *httpBlobUpload) Close() error {
hbu.closed = true
return nil
}

139
vendor/github.com/docker/distribution/registry/client/errors.go generated vendored
View file

@ -1,139 +0,0 @@
package client
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"github.com/docker/distribution/registry/api/errcode"
"github.com/docker/distribution/registry/client/auth/challenge"
)
// ErrNoErrorsInBody is returned when an HTTP response body parses to an empty
// errcode.Errors slice.
var ErrNoErrorsInBody = errors.New("no error details found in HTTP response body")
// UnexpectedHTTPStatusError is returned when an unexpected HTTP status is
// returned when making a registry api call.
type UnexpectedHTTPStatusError struct {
Status string
}
func (e *UnexpectedHTTPStatusError) Error() string {
return fmt.Sprintf("received unexpected HTTP status: %s", e.Status)
}
// UnexpectedHTTPResponseError is returned when an expected HTTP status code
// is returned, but the content was unexpected and failed to be parsed.
type UnexpectedHTTPResponseError struct {
ParseErr error
StatusCode int
Response []byte
}
func (e *UnexpectedHTTPResponseError) Error() string {
return fmt.Sprintf("error parsing HTTP %d response body: %s: %q", e.StatusCode, e.ParseErr.Error(), string(e.Response))
}
func parseHTTPErrorResponse(statusCode int, r io.Reader) error {
var errors errcode.Errors
body, err := ioutil.ReadAll(r)
if err != nil {
return err
}
// For backward compatibility, handle irregularly formatted
// messages that contain a "details" field.
var detailsErr struct {
Details string `json:"details"`
}
err = json.Unmarshal(body, &detailsErr)
if err == nil && detailsErr.Details != "" {
switch statusCode {
case http.StatusUnauthorized:
return errcode.ErrorCodeUnauthorized.WithMessage(detailsErr.Details)
case http.StatusTooManyRequests:
return errcode.ErrorCodeTooManyRequests.WithMessage(detailsErr.Details)
default:
return errcode.ErrorCodeUnknown.WithMessage(detailsErr.Details)
}
}
if err := json.Unmarshal(body, &errors); err != nil {
return &UnexpectedHTTPResponseError{
ParseErr: err,
StatusCode: statusCode,
Response: body,
}
}
if len(errors) == 0 {
// If there was no error specified in the body, return
// UnexpectedHTTPResponseError.
return &UnexpectedHTTPResponseError{
ParseErr: ErrNoErrorsInBody,
StatusCode: statusCode,
Response: body,
}
}
return errors
}
func makeErrorList(err error) []error {
if errL, ok := err.(errcode.Errors); ok {
return []error(errL)
}
return []error{err}
}
func mergeErrors(err1, err2 error) error {
return errcode.Errors(append(makeErrorList(err1), makeErrorList(err2)...))
}
// HandleErrorResponse returns error parsed from HTTP response for an
// unsuccessful HTTP response code (in the range 400 - 499 inclusive). An
// UnexpectedHTTPStatusError returned for response code outside of expected
// range.
func HandleErrorResponse(resp *http.Response) error {
if resp.StatusCode >= 400 && resp.StatusCode < 500 {
// Check for OAuth errors within the `WWW-Authenticate` header first
// See https://tools.ietf.org/html/rfc6750#section-3
for _, c := range challenge.ResponseChallenges(resp) {
if c.Scheme == "bearer" {
var err errcode.Error
// codes defined at https://tools.ietf.org/html/rfc6750#section-3.1
switch c.Parameters["error"] {
case "invalid_token":
err.Code = errcode.ErrorCodeUnauthorized
case "insufficient_scope":
err.Code = errcode.ErrorCodeDenied
default:
continue
}
if description := c.Parameters["error_description"]; description != "" {
err.Message = description
} else {
err.Message = err.Code.Message()
}
return mergeErrors(err, parseHTTPErrorResponse(resp.StatusCode, resp.Body))
}
}
err := parseHTTPErrorResponse(resp.StatusCode, resp.Body)
if uErr, ok := err.(*UnexpectedHTTPResponseError); ok && resp.StatusCode == 401 {
return errcode.ErrorCodeUnauthorized.WithDetail(uErr.Response)
}
return err
}
return &UnexpectedHTTPStatusError{Status: resp.Status}
}
// SuccessStatus returns true if the argument is a successful HTTP response
// code (in the range 200 - 399 inclusive).
func SuccessStatus(status int) bool {
return status >= 200 && status <= 399
}

853
vendor/github.com/docker/distribution/registry/client/repository.go generated vendored
View file

@ -1,853 +0,0 @@
package client
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/docker/distribution"
"github.com/docker/distribution/context"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/reference"
"github.com/docker/distribution/registry/api/v2"
"github.com/docker/distribution/registry/client/transport"
"github.com/docker/distribution/registry/storage/cache"
"github.com/docker/distribution/registry/storage/cache/memory"
)
// Registry provides an interface for calling Repositories, which returns a catalog of repositories.
type Registry interface {
Repositories(ctx context.Context, repos []string, last string) (n int, err error)
}
// checkHTTPRedirect is a callback that can manipulate redirected HTTP
// requests. It is used to preserve Accept and Range headers.
func checkHTTPRedirect(req *http.Request, via []*http.Request) error {
if len(via) >= 10 {
return errors.New("stopped after 10 redirects")
}
if len(via) > 0 {
for headerName, headerVals := range via[0].Header {
if headerName != "Accept" && headerName != "Range" {
continue
}
for _, val := range headerVals {
// Don't add to redirected request if redirected
// request already has a header with the same
// name and value.
hasValue := false
for _, existingVal := range req.Header[headerName] {
if existingVal == val {
hasValue = true
break
}
}
if !hasValue {
req.Header.Add(headerName, val)
}
}
}
}
return nil
}
// NewRegistry creates a registry namespace which can be used to get a listing of repositories
func NewRegistry(ctx context.Context, baseURL string, transport http.RoundTripper) (Registry, error) {
ub, err := v2.NewURLBuilderFromString(baseURL, false)
if err != nil {
return nil, err
}
client := &http.Client{
Transport: transport,
Timeout: 1 * time.Minute,
CheckRedirect: checkHTTPRedirect,
}
return &registry{
client: client,
ub: ub,
context: ctx,
}, nil
}
type registry struct {
client *http.Client
ub *v2.URLBuilder
context context.Context
}
// Repositories returns a lexigraphically sorted catalog given a base URL. The 'entries' slice will be filled up to the size
// of the slice, starting at the value provided in 'last'. The number of entries will be returned along with io.EOF if there
// are no more entries
func (r *registry) Repositories(ctx context.Context, entries []string, last string) (int, error) {
var numFilled int
var returnErr error
values := buildCatalogValues(len(entries), last)
u, err := r.ub.BuildCatalogURL(values)
if err != nil {
return 0, err
}
resp, err := r.client.Get(u)
if err != nil {
return 0, err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
var ctlg struct {
Repositories []string `json:"repositories"`
}
decoder := json.NewDecoder(resp.Body)
if err := decoder.Decode(&ctlg); err != nil {
return 0, err
}
for cnt := range ctlg.Repositories {
entries[cnt] = ctlg.Repositories[cnt]
}
numFilled = len(ctlg.Repositories)
link := resp.Header.Get("Link")
if link == "" {
returnErr = io.EOF
}
} else {
return 0, HandleErrorResponse(resp)
}
return numFilled, returnErr
}
// NewRepository creates a new Repository for the given repository name and base URL.
func NewRepository(ctx context.Context, name reference.Named, baseURL string, transport http.RoundTripper) (distribution.Repository, error) {
ub, err := v2.NewURLBuilderFromString(baseURL, false)
if err != nil {
return nil, err
}
client := &http.Client{
Transport: transport,
CheckRedirect: checkHTTPRedirect,
// TODO(dmcgowan): create cookie jar
}
return &repository{
client: client,
ub: ub,
name: name,
context: ctx,
}, nil
}
type repository struct {
client *http.Client
ub *v2.URLBuilder
context context.Context
name reference.Named
}
func (r *repository) Named() reference.Named {
return r.name
}
func (r *repository) Blobs(ctx context.Context) distribution.BlobStore {
statter := &blobStatter{
name: r.name,
ub: r.ub,
client: r.client,
}
return &blobs{
name: r.name,
ub: r.ub,
client: r.client,
statter: cache.NewCachedBlobStatter(memory.NewInMemoryBlobDescriptorCacheProvider(), statter),
}
}
func (r *repository) Manifests(ctx context.Context, options ...distribution.ManifestServiceOption) (distribution.ManifestService, error) {
// todo(richardscothern): options should be sent over the wire
return &manifests{
name: r.name,
ub: r.ub,
client: r.client,
etags: make(map[string]string),
}, nil
}
func (r *repository) Tags(ctx context.Context) distribution.TagService {
return &tags{
client: r.client,
ub: r.ub,
context: r.context,
name: r.Named(),
}
}
// tags implements remote tagging operations.
type tags struct {
client *http.Client
ub *v2.URLBuilder
context context.Context
name reference.Named
}
// All returns all tags
func (t *tags) All(ctx context.Context) ([]string, error) {
var tags []string
u, err := t.ub.BuildTagsURL(t.name)
if err != nil {
return tags, err
}
for {
resp, err := t.client.Get(u)
if err != nil {
return tags, err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return tags, err
}
tagsResponse := struct {
Tags []string `json:"tags"`
}{}
if err := json.Unmarshal(b, &tagsResponse); err != nil {
return tags, err
}
tags = append(tags, tagsResponse.Tags...)
if link := resp.Header.Get("Link"); link != "" {
u = strings.Trim(strings.Split(link, ";")[0], "<>")
} else {
return tags, nil
}
} else {
return tags, HandleErrorResponse(resp)
}
}
}
func descriptorFromResponse(response *http.Response) (distribution.Descriptor, error) {
desc := distribution.Descriptor{}
headers := response.Header
ctHeader := headers.Get("Content-Type")
if ctHeader == "" {
return distribution.Descriptor{}, errors.New("missing or empty Content-Type header")
}
desc.MediaType = ctHeader
digestHeader := headers.Get("Docker-Content-Digest")
if digestHeader == "" {
bytes, err := ioutil.ReadAll(response.Body)
if err != nil {
return distribution.Descriptor{}, err
}
_, desc, err := distribution.UnmarshalManifest(ctHeader, bytes)
if err != nil {
return distribution.Descriptor{}, err
}
return desc, nil
}
dgst, err := digest.ParseDigest(digestHeader)
if err != nil {
return distribution.Descriptor{}, err
}
desc.Digest = dgst
lengthHeader := headers.Get("Content-Length")
if lengthHeader == "" {
return distribution.Descriptor{}, errors.New("missing or empty Content-Length header")
}
length, err := strconv.ParseInt(lengthHeader, 10, 64)
if err != nil {
return distribution.Descriptor{}, err
}
desc.Size = length
return desc, nil
}
// Get issues a HEAD request for a Manifest against its named endpoint in order
// to construct a descriptor for the tag. If the registry doesn't support HEADing
// a manifest, fallback to GET.
func (t *tags) Get(ctx context.Context, tag string) (distribution.Descriptor, error) {
ref, err := reference.WithTag(t.name, tag)
if err != nil {
return distribution.Descriptor{}, err
}
u, err := t.ub.BuildManifestURL(ref)
if err != nil {
return distribution.Descriptor{}, err
}
newRequest := func(method string) (*http.Response, error) {
req, err := http.NewRequest(method, u, nil)
if err != nil {
return nil, err
}
for _, t := range distribution.ManifestMediaTypes() {
req.Header.Add("Accept", t)
}
resp, err := t.client.Do(req)
return resp, err
}
resp, err := newRequest("HEAD")
if err != nil {
return distribution.Descriptor{}, err
}
defer resp.Body.Close()
switch {
case resp.StatusCode >= 200 && resp.StatusCode < 400:
return descriptorFromResponse(resp)
default:
// if the response is an error - there will be no body to decode.
// Issue a GET request:
// - for data from a server that does not handle HEAD
// - to get error details in case of a failure
resp, err = newRequest("GET")
if err != nil {
return distribution.Descriptor{}, err
}
defer resp.Body.Close()
if resp.StatusCode >= 200 && resp.StatusCode < 400 {
return descriptorFromResponse(resp)
}
return distribution.Descriptor{}, HandleErrorResponse(resp)
}
}
func (t *tags) Lookup(ctx context.Context, digest distribution.Descriptor) ([]string, error) {
panic("not implemented")
}
func (t *tags) Tag(ctx context.Context, tag string, desc distribution.Descriptor) error {
panic("not implemented")
}
func (t *tags) Untag(ctx context.Context, tag string) error {
panic("not implemented")
}
type manifests struct {
name reference.Named
ub *v2.URLBuilder
client *http.Client
etags map[string]string
}
func (ms *manifests) Exists(ctx context.Context, dgst digest.Digest) (bool, error) {
ref, err := reference.WithDigest(ms.name, dgst)
if err != nil {
return false, err
}
u, err := ms.ub.BuildManifestURL(ref)
if err != nil {
return false, err
}
resp, err := ms.client.Head(u)
if err != nil {
return false, err
}
if SuccessStatus(resp.StatusCode) {
return true, nil
} else if resp.StatusCode == http.StatusNotFound {
return false, nil
}
return false, HandleErrorResponse(resp)
}
// AddEtagToTag allows a client to supply an eTag to Get which will be
// used for a conditional HTTP request. If the eTag matches, a nil manifest
// and ErrManifestNotModified error will be returned. etag is automatically
// quoted when added to this map.
func AddEtagToTag(tag, etag string) distribution.ManifestServiceOption {
return etagOption{tag, etag}
}
type etagOption struct{ tag, etag string }
func (o etagOption) Apply(ms distribution.ManifestService) error {
if ms, ok := ms.(*manifests); ok {
ms.etags[o.tag] = fmt.Sprintf(`"%s"`, o.etag)
return nil
}
return fmt.Errorf("etag options is a client-only option")
}
// ReturnContentDigest allows a client to set a the content digest on
// a successful request from the 'Docker-Content-Digest' header. This
// returned digest is represents the digest which the registry uses
// to refer to the content and can be used to delete the content.
func ReturnContentDigest(dgst *digest.Digest) distribution.ManifestServiceOption {
return contentDigestOption{dgst}
}
type contentDigestOption struct{ digest *digest.Digest }
func (o contentDigestOption) Apply(ms distribution.ManifestService) error {
return nil
}
func (ms *manifests) Get(ctx context.Context, dgst digest.Digest, options ...distribution.ManifestServiceOption) (distribution.Manifest, error) {
var (
digestOrTag string
ref reference.Named
err error
contentDgst *digest.Digest
)
for _, option := range options {
if opt, ok := option.(distribution.WithTagOption); ok {
digestOrTag = opt.Tag
ref, err = reference.WithTag(ms.name, opt.Tag)
if err != nil {
return nil, err
}
} else if opt, ok := option.(contentDigestOption); ok {
contentDgst = opt.digest
} else {
err := option.Apply(ms)
if err != nil {
return nil, err
}
}
}
if digestOrTag == "" {
digestOrTag = dgst.String()
ref, err = reference.WithDigest(ms.name, dgst)
if err != nil {
return nil, err
}
}
u, err := ms.ub.BuildManifestURL(ref)
if err != nil {
return nil, err
}
req, err := http.NewRequest("GET", u, nil)
if err != nil {
return nil, err
}
for _, t := range distribution.ManifestMediaTypes() {
req.Header.Add("Accept", t)
}
if _, ok := ms.etags[digestOrTag]; ok {
req.Header.Set("If-None-Match", ms.etags[digestOrTag])
}
resp, err := ms.client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusNotModified {
return nil, distribution.ErrManifestNotModified
} else if SuccessStatus(resp.StatusCode) {
if contentDgst != nil {
dgst, err := digest.ParseDigest(resp.Header.Get("Docker-Content-Digest"))
if err == nil {
*contentDgst = dgst
}
}
mt := resp.Header.Get("Content-Type")
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
m, _, err := distribution.UnmarshalManifest(mt, body)
if err != nil {
return nil, err
}
return m, nil
}
return nil, HandleErrorResponse(resp)
}
// Put puts a manifest. A tag can be specified using an options parameter which uses some shared state to hold the
// tag name in order to build the correct upload URL.
func (ms *manifests) Put(ctx context.Context, m distribution.Manifest, options ...distribution.ManifestServiceOption) (digest.Digest, error) {
ref := ms.name
var tagged bool
for _, option := range options {
if opt, ok := option.(distribution.WithTagOption); ok {
var err error
ref, err = reference.WithTag(ref, opt.Tag)
if err != nil {
return "", err
}
tagged = true
} else {
err := option.Apply(ms)
if err != nil {
return "", err
}
}
}
mediaType, p, err := m.Payload()
if err != nil {
return "", err
}
if !tagged {
// generate a canonical digest and Put by digest
_, d, err := distribution.UnmarshalManifest(mediaType, p)
if err != nil {
return "", err
}
ref, err = reference.WithDigest(ref, d.Digest)
if err != nil {
return "", err
}
}
manifestURL, err := ms.ub.BuildManifestURL(ref)
if err != nil {
return "", err
}
putRequest, err := http.NewRequest("PUT", manifestURL, bytes.NewReader(p))
if err != nil {
return "", err
}
putRequest.Header.Set("Content-Type", mediaType)
resp, err := ms.client.Do(putRequest)
if err != nil {
return "", err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
dgstHeader := resp.Header.Get("Docker-Content-Digest")
dgst, err := digest.ParseDigest(dgstHeader)
if err != nil {
return "", err
}
return dgst, nil
}
return "", HandleErrorResponse(resp)
}
func (ms *manifests) Delete(ctx context.Context, dgst digest.Digest) error {
ref, err := reference.WithDigest(ms.name, dgst)
if err != nil {
return err
}
u, err := ms.ub.BuildManifestURL(ref)
if err != nil {
return err
}
req, err := http.NewRequest("DELETE", u, nil)
if err != nil {
return err
}
resp, err := ms.client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
return nil
}
return HandleErrorResponse(resp)
}
// todo(richardscothern): Restore interface and implementation with merge of #1050
/*func (ms *manifests) Enumerate(ctx context.Context, manifests []distribution.Manifest, last distribution.Manifest) (n int, err error) {
panic("not supported")
}*/
type blobs struct {
name reference.Named
ub *v2.URLBuilder
client *http.Client
statter distribution.BlobDescriptorService
distribution.BlobDeleter
}
func sanitizeLocation(location, base string) (string, error) {
baseURL, err := url.Parse(base)
if err != nil {
return "", err
}
locationURL, err := url.Parse(location)
if err != nil {
return "", err
}
return baseURL.ResolveReference(locationURL).String(), nil
}
func (bs *blobs) Stat(ctx context.Context, dgst digest.Digest) (distribution.Descriptor, error) {
return bs.statter.Stat(ctx, dgst)
}
func (bs *blobs) Get(ctx context.Context, dgst digest.Digest) ([]byte, error) {
reader, err := bs.Open(ctx, dgst)
if err != nil {
return nil, err
}
defer reader.Close()
return ioutil.ReadAll(reader)
}
func (bs *blobs) Open(ctx context.Context, dgst digest.Digest) (distribution.ReadSeekCloser, error) {
ref, err := reference.WithDigest(bs.name, dgst)
if err != nil {
return nil, err
}
blobURL, err := bs.ub.BuildBlobURL(ref)
if err != nil {
return nil, err
}
return transport.NewHTTPReadSeeker(bs.client, blobURL,
func(resp *http.Response) error {
if resp.StatusCode == http.StatusNotFound {
return distribution.ErrBlobUnknown
}
return HandleErrorResponse(resp)
}), nil
}
func (bs *blobs) ServeBlob(ctx context.Context, w http.ResponseWriter, r *http.Request, dgst digest.Digest) error {
panic("not implemented")
}
func (bs *blobs) Put(ctx context.Context, mediaType string, p []byte) (distribution.Descriptor, error) {
writer, err := bs.Create(ctx)
if err != nil {
return distribution.Descriptor{}, err
}
dgstr := digest.Canonical.New()
n, err := io.Copy(writer, io.TeeReader(bytes.NewReader(p), dgstr.Hash()))
if err != nil {
return distribution.Descriptor{}, err
}
if n < int64(len(p)) {
return distribution.Descriptor{}, fmt.Errorf("short copy: wrote %d of %d", n, len(p))
}
desc := distribution.Descriptor{
MediaType: mediaType,
Size: int64(len(p)),
Digest: dgstr.Digest(),
}
return writer.Commit(ctx, desc)
}
type optionFunc func(interface{}) error
func (f optionFunc) Apply(v interface{}) error {
return f(v)
}
// WithMountFrom returns a BlobCreateOption which designates that the blob should be
// mounted from the given canonical reference.
func WithMountFrom(ref reference.Canonical) distribution.BlobCreateOption {
return optionFunc(func(v interface{}) error {
opts, ok := v.(*distribution.CreateOptions)
if !ok {
return fmt.Errorf("unexpected options type: %T", v)
}
opts.Mount.ShouldMount = true
opts.Mount.From = ref
return nil
})
}
func (bs *blobs) Create(ctx context.Context, options ...distribution.BlobCreateOption) (distribution.BlobWriter, error) {
var opts distribution.CreateOptions
for _, option := range options {
err := option.Apply(&opts)
if err != nil {
return nil, err
}
}
var values []url.Values
if opts.Mount.ShouldMount {
values = append(values, url.Values{"from": {opts.Mount.From.Name()}, "mount": {opts.Mount.From.Digest().String()}})
}
u, err := bs.ub.BuildBlobUploadURL(bs.name, values...)
if err != nil {
return nil, err
}
resp, err := bs.client.Post(u, "", nil)
if err != nil {
return nil, err
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusCreated:
desc, err := bs.statter.Stat(ctx, opts.Mount.From.Digest())
if err != nil {
return nil, err
}
return nil, distribution.ErrBlobMounted{From: opts.Mount.From, Descriptor: desc}
case http.StatusAccepted:
// TODO(dmcgowan): Check for invalid UUID
uuid := resp.Header.Get("Docker-Upload-UUID")
location, err := sanitizeLocation(resp.Header.Get("Location"), u)
if err != nil {
return nil, err
}
return &httpBlobUpload{
statter: bs.statter,
client: bs.client,
uuid: uuid,
startedAt: time.Now(),
location: location,
}, nil
default:
return nil, HandleErrorResponse(resp)
}
}
func (bs *blobs) Resume(ctx context.Context, id string) (distribution.BlobWriter, error) {
panic("not implemented")
}
func (bs *blobs) Delete(ctx context.Context, dgst digest.Digest) error {
return bs.statter.Clear(ctx, dgst)
}
type blobStatter struct {
name reference.Named
ub *v2.URLBuilder
client *http.Client
}
func (bs *blobStatter) Stat(ctx context.Context, dgst digest.Digest) (distribution.Descriptor, error) {
ref, err := reference.WithDigest(bs.name, dgst)
if err != nil {
return distribution.Descriptor{}, err
}
u, err := bs.ub.BuildBlobURL(ref)
if err != nil {
return distribution.Descriptor{}, err
}
resp, err := bs.client.Head(u)
if err != nil {
return distribution.Descriptor{}, err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
lengthHeader := resp.Header.Get("Content-Length")
if lengthHeader == "" {
return distribution.Descriptor{}, fmt.Errorf("missing content-length header for request: %s", u)
}
length, err := strconv.ParseInt(lengthHeader, 10, 64)
if err != nil {
return distribution.Descriptor{}, fmt.Errorf("error parsing content-length: %v", err)
}
return distribution.Descriptor{
MediaType: resp.Header.Get("Content-Type"),
Size: length,
Digest: dgst,
}, nil
} else if resp.StatusCode == http.StatusNotFound {
return distribution.Descriptor{}, distribution.ErrBlobUnknown
}
return distribution.Descriptor{}, HandleErrorResponse(resp)
}
func buildCatalogValues(maxEntries int, last string) url.Values {
values := url.Values{}
if maxEntries > 0 {
values.Add("n", strconv.Itoa(maxEntries))
}
if last != "" {
values.Add("last", last)
}
return values
}
func (bs *blobStatter) Clear(ctx context.Context, dgst digest.Digest) error {
ref, err := reference.WithDigest(bs.name, dgst)
if err != nil {
return err
}
blobURL, err := bs.ub.BuildBlobURL(ref)
if err != nil {
return err
}
req, err := http.NewRequest("DELETE", blobURL, nil)
if err != nil {
return err
}
resp, err := bs.client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if SuccessStatus(resp.StatusCode) {
return nil
}
return HandleErrorResponse(resp)
}
func (bs *blobStatter) SetDescriptor(ctx context.Context, dgst digest.Digest, desc distribution.Descriptor) error {
return nil
}

251
vendor/github.com/docker/distribution/registry/client/transport/http_reader.go generated vendored
View file

@ -1,251 +0,0 @@
package transport
import (
"errors"
"fmt"
"io"
"net/http"
"os"
"regexp"
"strconv"
)
var (
contentRangeRegexp = regexp.MustCompile(`bytes ([0-9]+)-([0-9]+)/([0-9]+|\\*)`)
// ErrWrongCodeForByteRange is returned if the client sends a request
// with a Range header but the server returns a 2xx or 3xx code other
// than 206 Partial Content.
ErrWrongCodeForByteRange = errors.New("expected HTTP 206 from byte range request")
)
// ReadSeekCloser combines io.ReadSeeker with io.Closer.
type ReadSeekCloser interface {
io.ReadSeeker
io.Closer
}
// NewHTTPReadSeeker handles reading from an HTTP endpoint using a GET
// request. When seeking and starting a read from a non-zero offset
// the a "Range" header will be added which sets the offset.
// TODO(dmcgowan): Move this into a separate utility package
func NewHTTPReadSeeker(client *http.Client, url string, errorHandler func(*http.Response) error) ReadSeekCloser {
return &httpReadSeeker{
client: client,
url: url,
errorHandler: errorHandler,
}
}
type httpReadSeeker struct {
client *http.Client
url string
// errorHandler creates an error from an unsuccessful HTTP response.
// This allows the error to be created with the HTTP response body
// without leaking the body through a returned error.
errorHandler func(*http.Response) error
size int64
// rc is the remote read closer.
rc io.ReadCloser
// readerOffset tracks the offset as of the last read.
readerOffset int64
// seekOffset allows Seek to override the offset. Seek changes
// seekOffset instead of changing readOffset directly so that
// connection resets can be delayed and possibly avoided if the
// seek is undone (i.e. seeking to the end and then back to the
// beginning).
seekOffset int64
err error
}
func (hrs *httpReadSeeker) Read(p []byte) (n int, err error) {
if hrs.err != nil {
return 0, hrs.err
}
// If we sought to a different position, we need to reset the
// connection. This logic is here instead of Seek so that if
// a seek is undone before the next read, the connection doesn't
// need to be closed and reopened. A common example of this is
// seeking to the end to determine the length, and then seeking
// back to the original position.
if hrs.readerOffset != hrs.seekOffset {
hrs.reset()
}
hrs.readerOffset = hrs.seekOffset
rd, err := hrs.reader()
if err != nil {
return 0, err
}
n, err = rd.Read(p)
hrs.seekOffset += int64(n)
hrs.readerOffset += int64(n)
return n, err
}
func (hrs *httpReadSeeker) Seek(offset int64, whence int) (int64, error) {
if hrs.err != nil {
return 0, hrs.err
}
lastReaderOffset := hrs.readerOffset
if whence == os.SEEK_SET && hrs.rc == nil {
// If no request has been made yet, and we are seeking to an
// absolute position, set the read offset as well to avoid an
// unnecessary request.
hrs.readerOffset = offset
}
_, err := hrs.reader()
if err != nil {
hrs.readerOffset = lastReaderOffset
return 0, err
}
newOffset := hrs.seekOffset
switch whence {
case os.SEEK_CUR:
newOffset += offset
case os.SEEK_END:
if hrs.size < 0 {
return 0, errors.New("content length not known")
}
newOffset = hrs.size + offset
case os.SEEK_SET:
newOffset = offset
}
if newOffset < 0 {
err = errors.New("cannot seek to negative position")
} else {
hrs.seekOffset = newOffset
}
return hrs.seekOffset, err
}
func (hrs *httpReadSeeker) Close() error {
if hrs.err != nil {
return hrs.err
}
// close and release reader chain
if hrs.rc != nil {
hrs.rc.Close()
}
hrs.rc = nil
hrs.err = errors.New("httpLayer: closed")
return nil
}
func (hrs *httpReadSeeker) reset() {
if hrs.err != nil {
return
}
if hrs.rc != nil {
hrs.rc.Close()
hrs.rc = nil
}
}
func (hrs *httpReadSeeker) reader() (io.Reader, error) {
if hrs.err != nil {
return nil, hrs.err
}
if hrs.rc != nil {
return hrs.rc, nil
}
req, err := http.NewRequest("GET", hrs.url, nil)
if err != nil {
return nil, err
}
if hrs.readerOffset > 0 {
// If we are at different offset, issue a range request from there.
req.Header.Add("Range", fmt.Sprintf("bytes=%d-", hrs.readerOffset))
// TODO: get context in here
// context.GetLogger(hrs.context).Infof("Range: %s", req.Header.Get("Range"))
}
req.Header.Add("Accept-Encoding", "identity")
resp, err := hrs.client.Do(req)
if err != nil {
return nil, err
}
// Normally would use client.SuccessStatus, but that would be a cyclic
// import
if resp.StatusCode >= 200 && resp.StatusCode <= 399 {
if hrs.readerOffset > 0 {
if resp.StatusCode != http.StatusPartialContent {
return nil, ErrWrongCodeForByteRange
}
contentRange := resp.Header.Get("Content-Range")
if contentRange == "" {
return nil, errors.New("no Content-Range header found in HTTP 206 response")
}
submatches := contentRangeRegexp.FindStringSubmatch(contentRange)
if len(submatches) < 4 {
return nil, fmt.Errorf("could not parse Content-Range header: %s", contentRange)
}
startByte, err := strconv.ParseUint(submatches[1], 10, 64)
if err != nil {
return nil, fmt.Errorf("could not parse start of range in Content-Range header: %s", contentRange)
}
if startByte != uint64(hrs.readerOffset) {
return nil, fmt.Errorf("received Content-Range starting at offset %d instead of requested %d", startByte, hrs.readerOffset)
}
endByte, err := strconv.ParseUint(submatches[2], 10, 64)
if err != nil {
return nil, fmt.Errorf("could not parse end of range in Content-Range header: %s", contentRange)
}
if submatches[3] == "*" {
hrs.size = -1
} else {
size, err := strconv.ParseUint(submatches[3], 10, 64)
if err != nil {
return nil, fmt.Errorf("could not parse total size in Content-Range header: %s", contentRange)
}
if endByte+1 != size {
return nil, fmt.Errorf("range in Content-Range stops before the end of the content: %s", contentRange)
}
hrs.size = int64(size)
}
} else if resp.StatusCode == http.StatusOK {
hrs.size = resp.ContentLength
} else {
hrs.size = -1
}
hrs.rc = resp.Body
} else {
defer resp.Body.Close()
if hrs.errorHandler != nil {
return nil, hrs.errorHandler(resp)
}
return nil, fmt.Errorf("unexpected status resolving reader: %v", resp.Status)
}
return hrs.rc, nil
}

147
vendor/github.com/docker/distribution/registry/client/transport/transport.go generated vendored
View file

@ -1,147 +0,0 @@
package transport
import (
"io"
"net/http"
"sync"
)
// RequestModifier represents an object which will do an inplace
// modification of an HTTP request.
type RequestModifier interface {
ModifyRequest(*http.Request) error
}
type headerModifier http.Header
// NewHeaderRequestModifier returns a new RequestModifier which will
// add the given headers to a request.
func NewHeaderRequestModifier(header http.Header) RequestModifier {
return headerModifier(header)
}
func (h headerModifier) ModifyRequest(req *http.Request) error {
for k, s := range http.Header(h) {
req.Header[k] = append(req.Header[k], s...)
}
return nil
}
// NewTransport creates a new transport which will apply modifiers to
// the request on a RoundTrip call.
func NewTransport(base http.RoundTripper, modifiers ...RequestModifier) http.RoundTripper {
return &transport{
Modifiers: modifiers,
Base: base,
}
}
// transport is an http.RoundTripper that makes HTTP requests after
// copying and modifying the request
type transport struct {
Modifiers []RequestModifier
Base http.RoundTripper
mu sync.Mutex // guards modReq
modReq map[*http.Request]*http.Request // original -> modified
}
// RoundTrip authorizes and authenticates the request with an
// access token. If no token exists or token is expired,
// tries to refresh/fetch a new token.
func (t *transport) RoundTrip(req *http.Request) (*http.Response, error) {
req2 := cloneRequest(req)
for _, modifier := range t.Modifiers {
if err := modifier.ModifyRequest(req2); err != nil {
return nil, err
}
}
t.setModReq(req, req2)
res, err := t.base().RoundTrip(req2)
if err != nil {
t.setModReq(req, nil)
return nil, err
}
res.Body = &onEOFReader{
rc: res.Body,
fn: func() { t.setModReq(req, nil) },
}
return res, nil
}
// CancelRequest cancels an in-flight request by closing its connection.
func (t *transport) CancelRequest(req *http.Request) {
type canceler interface {
CancelRequest(*http.Request)
}
if cr, ok := t.base().(canceler); ok {
t.mu.Lock()
modReq := t.modReq[req]
delete(t.modReq, req)
t.mu.Unlock()
cr.CancelRequest(modReq)
}
}
func (t *transport) base() http.RoundTripper {
if t.Base != nil {
return t.Base
}
return http.DefaultTransport
}
func (t *transport) setModReq(orig, mod *http.Request) {
t.mu.Lock()
defer t.mu.Unlock()
if t.modReq == nil {
t.modReq = make(map[*http.Request]*http.Request)
}
if mod == nil {
delete(t.modReq, orig)
} else {
t.modReq[orig] = mod
}
}
// cloneRequest returns a clone of the provided *http.Request.
// The clone is a shallow copy of the struct and its Header map.
func cloneRequest(r *http.Request) *http.Request {
// shallow copy of the struct
r2 := new(http.Request)
*r2 = *r
// deep copy of the Header
r2.Header = make(http.Header, len(r.Header))
for k, s := range r.Header {
r2.Header[k] = append([]string(nil), s...)
}
return r2
}
type onEOFReader struct {
rc io.ReadCloser
fn func()
}
func (r *onEOFReader) Read(p []byte) (n int, err error) {
n, err = r.rc.Read(p)
if err == io.EOF {
r.runFunc()
}
return
}
func (r *onEOFReader) Close() error {
err := r.rc.Close()
r.runFunc()
return err
}
func (r *onEOFReader) runFunc() {
if fn := r.fn; fn != nil {
fn()
r.fn = nil
}
}