diff options
Diffstat (limited to 'common/httpclient/httpclient.go')
-rw-r--r-- | common/httpclient/httpclient.go | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/common/httpclient/httpclient.go b/common/httpclient/httpclient.go deleted file mode 100644 index a0a1efd38..000000000 --- a/common/httpclient/httpclient.go +++ /dev/null @@ -1,124 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. - -package httpclient - -import ( - "fmt" - "io/ioutil" - "net/http" - "path/filepath" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/crypto" -) - -type HTTPClient struct { - *http.Transport - DocRoot string - schemes []string -} - -func New(docRoot string) (self *HTTPClient) { - self = &HTTPClient{ - Transport: &http.Transport{}, - DocRoot: docRoot, - schemes: []string{"file"}, - } - self.RegisterProtocol("file", http.NewFileTransport(http.Dir(self.DocRoot))) - return -} - -// Clients should be reused instead of created as needed. Clients are safe for concurrent use by multiple goroutines. - -// A Client is higher-level than a RoundTripper (such as Transport) and additionally handles HTTP details such as cookies and redirects. - -func (self *HTTPClient) Client() *http.Client { - return &http.Client{ - Transport: self, - } -} - -func (self *HTTPClient) RegisterScheme(scheme string, rt http.RoundTripper) { - self.schemes = append(self.schemes, scheme) - self.RegisterProtocol(scheme, rt) -} - -func (self *HTTPClient) HasScheme(scheme string) bool { - for _, s := range self.schemes { - if s == scheme { - return true - } - } - return false -} - -func (self *HTTPClient) GetAuthContent(uri string, hash common.Hash) ([]byte, error) { - // retrieve content - content, err := self.Get(uri, "") - if err != nil { - return nil, err - } - - // check hash to authenticate content - chash := crypto.Keccak256Hash(content) - if chash != hash { - return nil, fmt.Errorf("content hash mismatch %x != %x (exp)", hash[:], chash[:]) - } - - return content, nil - -} - -// Get(uri, path) downloads the document at uri, if path is non-empty it -// is interpreted as a filepath to which the contents are saved -func (self *HTTPClient) Get(uri, path string) ([]byte, error) { - // retrieve content - resp, err := self.Client().Get(uri) - if err != nil { - return nil, err - } - defer func() { - if resp != nil { - resp.Body.Close() - } - }() - - var content []byte - content, err = ioutil.ReadAll(resp.Body) - if err != nil { - return nil, err - } - - if resp.StatusCode/100 != 2 { - return content, fmt.Errorf("HTTP error: %s", resp.Status) - } - - if path != "" { - var abspath string - abspath, err = filepath.Abs(path) - if err != nil { - return nil, err - } - err = ioutil.WriteFile(abspath, content, 0600) - if err != nil { - return nil, err - } - } - - return content, nil - -} |