harbor/utils/registry/httpclient.go
2016-04-15 13:17:32 +08:00

116 lines
3.1 KiB
Go

/*
Copyright (c) 2016 VMware, Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package registry
import (
"net/http"
"github.com/vmware/harbor/utils/log"
"github.com/vmware/harbor/utils/registry/auth"
)
// NewClientStandardAuthHandlerEmbeded return a http.Client which will authorize the request
// according to the credential provided and send it again when encounters a 401 error
func NewClientStandardAuthHandlerEmbeded(credential *auth.Credential) *http.Client {
handlers := []auth.Handler{}
tokenHandler := auth.NewStandardTokenHandler(credential)
handlers = append(handlers, tokenHandler)
transport := NewAuthTransport(http.DefaultTransport, handlers)
return &http.Client{
Transport: transport,
}
}
// NewClientUsernameAuthHandlerEmbeded return a http.Client which will authorize the request
// according to the user's privileges and send it again when encounters a 401 error
func NewClientUsernameAuthHandlerEmbeded(username string) *http.Client {
handlers := []auth.Handler{}
tokenHandler := auth.NewUsernameTokenHandler(username)
handlers = append(handlers, tokenHandler)
transport := NewAuthTransport(http.DefaultTransport, handlers)
return &http.Client{
Transport: transport,
}
}
type authTransport struct {
transport http.RoundTripper
handlers []auth.Handler
}
// NewAuthTransport wraps the AuthHandlers to be http.RounTripper
func NewAuthTransport(transport http.RoundTripper, handlers []auth.Handler) http.RoundTripper {
return &authTransport{
transport: transport,
handlers: handlers,
}
}
// RoundTrip ...
func (a *authTransport) RoundTrip(req *http.Request) (*http.Response, error) {
originResp, originErr := a.transport.RoundTrip(req)
if originErr != nil {
return originResp, originErr
}
log.Debugf("%d | %s %s", originResp.StatusCode, req.Method, req.URL)
if originResp.StatusCode != http.StatusUnauthorized {
return originResp, nil
}
challenges := auth.ParseChallengeFromResponse(originResp)
reqChanged := false
for _, challenge := range challenges {
scheme := challenge.Scheme
for _, handler := range a.handlers {
if scheme != handler.Schema() {
log.Debugf("scheme not match: %s %s, skip", scheme, handler.Schema())
continue
}
if err := handler.AuthorizeRequest(req, challenge.Parameters); err != nil {
return nil, err
}
reqChanged = true
}
}
if !reqChanged {
log.Warning("no handler match scheme")
return originResp, nil
}
resp, err := a.transport.RoundTrip(req)
if err == nil {
log.Debugf("%d | %s %s", resp.StatusCode, req.Method, req.URL)
}
return resp, err
}