3a540425a3
- statereg methods move to natspec/resolver/docserver - fix failing test on invalid js input
79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
package docserver
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
)
|
|
|
|
// http://golang.org/pkg/net/http/#RoundTripper
|
|
var (
|
|
schemes = map[string]func(*DocServer) http.RoundTripper{
|
|
// Simple File server from local disk file:///etc/passwd :)
|
|
"file": fileServerOnDocRoot,
|
|
}
|
|
)
|
|
|
|
func fileServerOnDocRoot(ds *DocServer) http.RoundTripper {
|
|
return http.NewFileTransport(http.Dir(ds.DocRoot))
|
|
}
|
|
|
|
type DocServer struct {
|
|
*http.Transport
|
|
DocRoot string
|
|
}
|
|
|
|
func New(docRoot string) (self *DocServer, err error) {
|
|
self = &DocServer{
|
|
Transport: &http.Transport{},
|
|
DocRoot: docRoot,
|
|
}
|
|
err = self.RegisterProtocols(schemes)
|
|
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 *DocServer) Client() *http.Client {
|
|
return &http.Client{
|
|
Transport: self,
|
|
}
|
|
}
|
|
|
|
func (self *DocServer) RegisterProtocols(schemes map[string]func(*DocServer) http.RoundTripper) (err error) {
|
|
for scheme, rtf := range schemes {
|
|
self.RegisterProtocol(scheme, rtf(self))
|
|
}
|
|
return
|
|
}
|
|
|
|
func (self *DocServer) GetAuthContent(uri string, hash common.Hash) (content []byte, err error) {
|
|
// retrieve content
|
|
resp, err := self.Client().Get(uri)
|
|
defer resp.Body.Close()
|
|
if err != nil {
|
|
return
|
|
}
|
|
content, err = ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// check hash to authenticate content
|
|
hashbytes := crypto.Sha3(content)
|
|
var chash common.Hash
|
|
copy(chash[:], hashbytes)
|
|
if chash != hash {
|
|
content = nil
|
|
err = fmt.Errorf("content hash mismatch")
|
|
}
|
|
|
|
return
|
|
|
|
}
|