diff --git a/cmd/registry/main.go b/cmd/registry/main.go index 5beaa563..06a3cf19 100644 --- a/cmd/registry/main.go +++ b/cmd/registry/main.go @@ -12,6 +12,7 @@ import ( _ "github.com/docker/distribution/registry/storage/driver/filesystem" _ "github.com/docker/distribution/registry/storage/driver/gcs" _ "github.com/docker/distribution/registry/storage/driver/inmemory" + _ "github.com/docker/distribution/registry/storage/driver/middleware/alicdn" _ "github.com/docker/distribution/registry/storage/driver/middleware/cloudfront" _ "github.com/docker/distribution/registry/storage/driver/middleware/redirect" _ "github.com/docker/distribution/registry/storage/driver/oss" diff --git a/docs/configuration.md b/docs/configuration.md index e87dea70..c6fc18e9 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -720,6 +720,17 @@ Value of `ipfilteredby` can be: | `aws` | IP from AWS goes to S3 directly | | `awsregion` | IP from certain AWS regions goes to S3 directly, use together with `awsregion`. | +### `alicdn` + +`alicdn` storage middleware allows the registry to serve layers via a content delivery network provided by Alibaba Cloud. Alicdn requires the OSS storage driver. + +| Parameter | Required | Description | +|--------------|----------|-------------------------------------------------------------------------| +| `baseurl` | yes | The `SCHEME://HOST` at which Alicdn is served. | +| `authtype` | yes | The URL authentication type for Alicdn, which should be `a`, `b` or `c`. See the [Authentication configuration](https://www.alibabacloud.com/help/doc-detail/85117.htm).| +| `privatekey` | yes | The URL authentication key for Alicdn. | +| `duration` | no | An integer and unit for the duration of the Alicdn session. Valid time units are `ns`, `us` (or `µs`), `ms`, `s`, `m`, or `h`.| + ### `redirect` You can use the `redirect` storage middleware to specify a custom URL to a diff --git a/registry/storage/driver/middleware/alicdn/middleware.go b/registry/storage/driver/middleware/alicdn/middleware.go new file mode 100755 index 00000000..51993161 --- /dev/null +++ b/registry/storage/driver/middleware/alicdn/middleware.go @@ -0,0 +1,116 @@ +package alicdn + +import ( + "context" + "fmt" + "net/url" + "strings" + "time" + + dcontext "github.com/docker/distribution/context" + storagedriver "github.com/docker/distribution/registry/storage/driver" + storagemiddleware "github.com/docker/distribution/registry/storage/driver/middleware" + + "github.com/denverdino/aliyungo/cdn/auth" +) + +// aliCDNStorageMiddleware provides a simple implementation of layerHandler that +// constructs temporary signed AliCDN URLs from the storagedriver layer URL, +// then issues HTTP Temporary Redirects to this AliCDN content URL. +type aliCDNStorageMiddleware struct { + storagedriver.StorageDriver + baseURL string + urlSigner *auth.URLSigner + duration time.Duration +} + +var _ storagedriver.StorageDriver = &aliCDNStorageMiddleware{} + +// newAliCDNStorageMiddleware constructs and returns a new AliCDN +// StorageDriver implementation. +// Required options: baseurl, authtype, privatekey +// Optional options: duration +func newAliCDNStorageMiddleware(storageDriver storagedriver.StorageDriver, options map[string]interface{}) (storagedriver.StorageDriver, error) { + // parse baseurl + base, ok := options["baseurl"] + if !ok { + return nil, fmt.Errorf("no baseurl provided") + } + baseURL, ok := base.(string) + if !ok { + return nil, fmt.Errorf("baseurl must be a string") + } + if !strings.Contains(baseURL, "://") { + baseURL = "https://" + baseURL + } + if _, err := url.Parse(baseURL); err != nil { + return nil, fmt.Errorf("invalid baseurl: %v", err) + } + + // parse authtype + at, ok := options["authtype"] + if !ok { + return nil, fmt.Errorf("no authtype provided") + } + authType, ok := at.(string) + if !ok { + return nil, fmt.Errorf("authtype must be a string") + } + if authType != "a" && authType != "b" && authType != "c" { + return nil, fmt.Errorf("invalid authentication type") + } + + // parse privatekey + pk, ok := options["privatekey"] + if !ok { + return nil, fmt.Errorf("no privatekey provided") + } + privateKey, ok := pk.(string) + if !ok { + return nil, fmt.Errorf("privatekey must be a string") + } + + urlSigner := auth.NewURLSigner(authType, privateKey) + + // parse duration + duration := 20 * time.Minute + d, ok := options["duration"] + if ok { + switch d := d.(type) { + case time.Duration: + duration = d + case string: + dur, err := time.ParseDuration(d) + if err != nil { + return nil, fmt.Errorf("invalid duration: %s", err) + } + duration = dur + } + } + + return &aliCDNStorageMiddleware{ + StorageDriver: storageDriver, + baseURL: baseURL, + urlSigner: urlSigner, + duration: duration, + }, nil +} + +// URLFor attempts to find a url which may be used to retrieve the file at the given path. +func (ac *aliCDNStorageMiddleware) URLFor(ctx context.Context, path string, options map[string]interface{}) (string, error) { + + if ac.StorageDriver.Name() != "oss" { + dcontext.GetLogger(ctx).Warn("the AliCDN middleware does not support this backend storage driver") + return ac.StorageDriver.URLFor(ctx, path, options) + } + acURL, err := ac.urlSigner.Sign(ac.baseURL+path, time.Now().Add(ac.duration)) + if err != nil { + return "", err + } + return acURL, nil +} + +// init registers the alicdn layerHandler backend. +func init() { + storagemiddleware.Register("alicdn", storagemiddleware.InitFunc(newAliCDNStorageMiddleware)) +} diff --git a/vendor.conf b/vendor.conf index 12f71672..235f97fb 100644 --- a/vendor.conf +++ b/vendor.conf @@ -7,7 +7,7 @@ github.com/beorn7/perks 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9 github.com/bugsnag/bugsnag-go b1d153021fcd90ca3f080db36bec96dc690fb274 github.com/bugsnag/osext 0dd3f918b21bec95ace9dc86c7e70266cfc5c702 github.com/bugsnag/panicwrap e2c28503fcd0675329da73bf48b33404db873782 -github.com/denverdino/aliyungo 6df11717a253d9c7d4141f9af4deaa7c580cd531 +github.com/denverdino/aliyungo a747050bb1baf06cdd65de7cddc281a2b1c2fde5 github.com/dgrijalva/jwt-go a601269ab70c205d26370c16f7c81e9017c14e04 github.com/docker/go-metrics 399ea8c73916000c64c2c76e8da00ca82f8387ab github.com/docker/libtrust fa567046d9b14f6aa788882a950d69651d230b21 diff --git a/vendor/github.com/denverdino/aliyungo/cdn/auth/random_uuid.go b/vendor/github.com/denverdino/aliyungo/cdn/auth/random_uuid.go new file mode 100644 index 00000000..169a2b6c --- /dev/null +++ b/vendor/github.com/denverdino/aliyungo/cdn/auth/random_uuid.go @@ -0,0 +1,97 @@ +package auth + +import ( + "crypto/rand" + "fmt" + "io" + "os" + "syscall" + "time" +) + +const ( + // Bits is the number of bits in a UUID + Bits = 128 + + // Size is the number of bytes in a UUID + Size = Bits / 8 + + format = "%08x%04x%04x%04x%012x" +) + +var ( + // Loggerf can be used to override the default logging destination. Such + // log messages in this library should be logged at warning or higher. + Loggerf = func(format string, args ...interface{}) {} +) + +// UUID represents a UUID value. UUIDs can be compared and set to other values +// and accessed by byte. +type UUID [Size]byte + +// GenerateUUID creates a new, version 4 uuid. +func GenerateUUID() (u UUID) { + const ( + // ensures we backoff for less than 450ms total. Use the following to + // select new value, in units of 10ms: + // n*(n+1)/2 = d -> n^2 + n - 2d -> n = (sqrt(8d + 1) - 1)/2 + maxretries = 9 + backoff = time.Millisecond * 10 + ) + + var ( + totalBackoff time.Duration + count int + retries int + ) + + for { + // This should never block but the read may fail. Because of this, + // we just try to read the random number generator until we get + // something. This is a very rare condition but may happen. + b := time.Duration(retries) * backoff + time.Sleep(b) + totalBackoff += b + + n, err := io.ReadFull(rand.Reader, u[count:]) + if err != nil { + if retryOnError(err) && retries < maxretries { + count += n + retries++ + Loggerf("error generating version 4 uuid, retrying: %v", err) + continue + } + + // Any other errors represent a system problem. What did someone + // do to /dev/urandom? + panic(fmt.Errorf("error reading random number generator, retried for %v: %v", totalBackoff.String(), err)) + } + + break + } + + u[6] = (u[6] & 0x0f) | 0x40 // set version byte + u[8] = (u[8] & 0x3f) | 0x80 // set high order byte 0b10{8,9,a,b} + + return u +} + +func (u UUID) String() string { + return fmt.Sprintf(format, u[:4], u[4:6], u[6:8], u[8:10], u[10:]) +} + +// retryOnError tries to detect whether or not retrying would be fruitful. +func retryOnError(err error) bool { + switch err := err.(type) { + case *os.PathError: + return retryOnError(err.Err) // unpack the target error + case syscall.Errno: + if err == syscall.EPERM { + // EPERM represents an entropy pool exhaustion, a condition under + // which we backoff and retry. + return true + } + } + + return false +} diff --git a/vendor/github.com/denverdino/aliyungo/cdn/auth/sign_url.go b/vendor/github.com/denverdino/aliyungo/cdn/auth/sign_url.go new file mode 100644 index 00000000..211bd04f --- /dev/null +++ b/vendor/github.com/denverdino/aliyungo/cdn/auth/sign_url.go @@ -0,0 +1,80 @@ +package auth + +import ( + "crypto/md5" + "fmt" + "net/url" + "time" +) + +// An URLSigner provides URL signing utilities to sign URLs for Aliyun CDN +// resources. +// authentication document: https://help.aliyun.com/document_detail/85117.html +type URLSigner struct { + authType string + privKey string +} + +// NewURLSigner returns a new signer object. +func NewURLSigner(authType string, privKey string) *URLSigner { + return &URLSigner{ + authType: authType, + privKey: privKey, + } +} + +// Sign returns a signed aliyuncdn url based on authentication type +func (s URLSigner) Sign(uri string, expires time.Time) (string, error) { + r, err := url.Parse(uri) + if err != nil { + return "", fmt.Errorf("unable to parse url: %s", uri) + } + + switch s.authType { + case "a": + return aTypeSign(r, s.privKey, expires), nil + case "b": + return bTypeSign(r, s.privKey, expires), nil + case "c": + return cTypeSign(r, s.privKey, expires), nil + default: + return "", fmt.Errorf("invalid authentication type") + } +} + +// sign by A type authentication method. +// authentication document: https://help.aliyun.com/document_detail/85113.html +func aTypeSign(r *url.URL, privateKey string, expires time.Time) string { + //rand is a random uuid without "-" + rand := GenerateUUID().String() + // not use, "0" by default + uid := "0" + secret := fmt.Sprintf("%s-%d-%s-%s-%s", r.Path, expires.Unix(), rand, uid, privateKey) + hashValue := md5.Sum([]byte(secret)) + authKey := fmt.Sprintf("%d-%s-%s-%x", expires.Unix(), rand, uid, hashValue) + if r.RawQuery == "" { + return fmt.Sprintf("%s?auth_key=%s", r.String(), authKey) + } + return fmt.Sprintf("%s&auth_key=%s", r.String(), authKey) + +} + +// sign by B type authentication method. +// authentication document: https://help.aliyun.com/document_detail/85114.html +func bTypeSign(r *url.URL, privateKey string, expires time.Time) string { + formatExp := expires.Format("200601021504") + secret := privateKey + formatExp + r.Path + hashValue := md5.Sum([]byte(secret)) + signURL := fmt.Sprintf("%s://%s/%s/%x%s?%s", r.Scheme, r.Host, formatExp, hashValue, r.Path, r.RawQuery) + return signURL +} + +// sign by C type authentication method. +// authentication document: https://help.aliyun.com/document_detail/85115.html +func cTypeSign(r *url.URL, privateKey string, expires time.Time) string { + hexExp := fmt.Sprintf("%x", expires.Unix()) + secret := privateKey + r.Path + hexExp + hashValue := md5.Sum([]byte(secret)) + signURL := fmt.Sprintf("%s://%s/%x/%s%s?%s", r.Scheme, r.Host, hashValue, hexExp, r.Path, r.RawQuery) + return signURL +} diff --git a/vendor/github.com/denverdino/aliyungo/oss/client.go b/vendor/github.com/denverdino/aliyungo/oss/client.go index 7b5a55b8..c0919194 100644 --- a/vendor/github.com/denverdino/aliyungo/oss/client.go +++ b/vendor/github.com/denverdino/aliyungo/oss/client.go @@ -851,6 +851,17 @@ func (b *Bucket) SignedURLWithArgs(path string, expires time.Time, params url.Va return b.SignedURLWithMethod("GET", path, expires, params, headers) } +func (b *Bucket) SignedURLWithMethodForAssumeRole(method, path string, expires time.Time, params url.Values, headers http.Header) string { + var uv = url.Values{} + if params != nil { + uv = params + } + if len(b.Client.SecurityToken) != 0 { + uv.Set("security-token", b.Client.SecurityToken) + } + return b.SignedURLWithMethod(method, path, expires, params, headers) +} + // SignedURLWithMethod returns a signed URL that allows anyone holding the URL // to either retrieve the object at path or make a HEAD request against it. The signature is valid until expires. func (b *Bucket) SignedURLWithMethod(method, path string, expires time.Time, params url.Values, headers http.Header) string { @@ -1039,7 +1050,8 @@ func partiallyEscapedPath(path string) string { func (client *Client) prepare(req *request) error { // Copy so they can be mutated without affecting on retries. headers := copyHeader(req.headers) - if len(client.SecurityToken) != 0 { + // security-token should be in either Params or Header, cannot be in both + if len(req.params.Get("security-token")) == 0 && len(client.SecurityToken) != 0 { headers.Set("x-oss-security-token", client.SecurityToken) } diff --git a/vendor/github.com/denverdino/aliyungo/oss/signature.go b/vendor/github.com/denverdino/aliyungo/oss/signature.go index 12677175..4a0f4d97 100644 --- a/vendor/github.com/denverdino/aliyungo/oss/signature.go +++ b/vendor/github.com/denverdino/aliyungo/oss/signature.go @@ -13,26 +13,44 @@ const HeaderOSSPrefix = "x-oss-" var ossParamsToSign = map[string]bool{ "acl": true, + "append": true, + "bucketInfo": true, + "cname": true, + "comp": true, + "cors": true, "delete": true, + "endTime": true, + "img": true, + "lifecycle": true, + "live": true, "location": true, "logging": true, - "notification": true, + "objectMeta": true, "partNumber": true, - "policy": true, - "requestPayment": true, - "torrent": true, - "uploadId": true, - "uploads": true, - "versionId": true, - "versioning": true, - "versions": true, - "response-content-type": true, - "response-content-language": true, - "response-expires": true, + "position": true, + "qos": true, + "referer": true, + "replication": true, + "replicationLocation": true, + "replicationProgress": true, "response-cache-control": true, "response-content-disposition": true, "response-content-encoding": true, - "bucketInfo": true, + "response-content-language": true, + "response-content-type": true, + "response-expires": true, + "security-token": true, + "startTime": true, + "status": true, + "style": true, + "styleName": true, + "symlink": true, + "tagging": true, + "uploadId": true, + "uploads": true, + "vod": true, + "website": true, + "x-oss-process": true, } func (client *Client) signRequest(request *request) { @@ -62,7 +80,7 @@ func (client *Client) signRequest(request *request) { } if len(params) > 0 { - resource = resource + "?" + util.Encode(params) + resource = resource + "?" + util.EncodeWithoutEscape(params) } canonicalizedResource := resource @@ -74,7 +92,7 @@ func (client *Client) signRequest(request *request) { //log.Println("stringToSign: ", stringToSign) signature := util.CreateSignature(stringToSign, client.AccessKeySecret) - if query.Get("OSSAccessKeyId") != "" { + if urlSignature { query.Set("Signature", signature) } else { headers.Set("Authorization", "OSS "+client.AccessKeyId+":"+signature) diff --git a/vendor/github.com/denverdino/aliyungo/util/util.go b/vendor/github.com/denverdino/aliyungo/util/util.go index ff49f2d8..15a990da 100644 --- a/vendor/github.com/denverdino/aliyungo/util/util.go +++ b/vendor/github.com/denverdino/aliyungo/util/util.go @@ -4,13 +4,13 @@ import ( "bytes" srand "crypto/rand" "encoding/binary" + "encoding/json" + "fmt" "math/rand" "net/http" "net/url" "sort" "time" - "fmt" - "encoding/json" ) const dictionary = "_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" @@ -66,6 +66,34 @@ func Encode(v url.Values) string { return buf.String() } +// Like Encode, but key and value are not escaped +func EncodeWithoutEscape(v url.Values) string { + if v == nil { + return "" + } + var buf bytes.Buffer + keys := make([]string, 0, len(v)) + for k := range v { + keys = append(keys, k) + } + sort.Strings(keys) + for _, k := range keys { + vs := v[k] + prefix := k + for _, v := range vs { + if buf.Len() > 0 { + buf.WriteByte('&') + } + buf.WriteString(prefix) + if v != "" { + buf.WriteString("=") + buf.WriteString(v) + } + } + } + return buf.String() +} + func GetGMTime() string { return time.Now().UTC().Format(http.TimeFormat) } @@ -148,11 +176,10 @@ func GenerateRandomECSPassword() string { } - func PrettyJson(object interface{}) string { - b,err := json.MarshalIndent(object,"", " ") + b, err := json.MarshalIndent(object, "", " ") if err != nil { - fmt.Printf("ERROR: PrettyJson, %v\n %s\n",err,b) + fmt.Printf("ERROR: PrettyJson, %v\n %s\n", err, b) } return string(b) -} \ No newline at end of file +}