mirror of
https://github.com/go-gitea/gitea.git
synced 2024-10-19 06:43:41 -04:00
08bf443016
* Inital routes to git refs api * Git refs API implementation * Update swagger * Fix copyright * Make swagger happy add basic test * Fix test * Fix test again :)
282 lines
6.3 KiB
Go
282 lines
6.3 KiB
Go
// Package http implements the HTTP transport protocol.
|
|
package http
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"gopkg.in/src-d/go-git.v4/plumbing"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/protocol/packp"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/transport"
|
|
"gopkg.in/src-d/go-git.v4/utils/ioutil"
|
|
)
|
|
|
|
// it requires a bytes.Buffer, because we need to know the length
|
|
func applyHeadersToRequest(req *http.Request, content *bytes.Buffer, host string, requestType string) {
|
|
req.Header.Add("User-Agent", "git/1.0")
|
|
req.Header.Add("Host", host) // host:port
|
|
|
|
if content == nil {
|
|
req.Header.Add("Accept", "*/*")
|
|
return
|
|
}
|
|
|
|
req.Header.Add("Accept", fmt.Sprintf("application/x-%s-result", requestType))
|
|
req.Header.Add("Content-Type", fmt.Sprintf("application/x-%s-request", requestType))
|
|
req.Header.Add("Content-Length", strconv.Itoa(content.Len()))
|
|
}
|
|
|
|
const infoRefsPath = "/info/refs"
|
|
|
|
func advertisedReferences(s *session, serviceName string) (ref *packp.AdvRefs, err error) {
|
|
url := fmt.Sprintf(
|
|
"%s%s?service=%s",
|
|
s.endpoint.String(), infoRefsPath, serviceName,
|
|
)
|
|
|
|
req, err := http.NewRequest(http.MethodGet, url, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
s.ApplyAuthToRequest(req)
|
|
applyHeadersToRequest(req, nil, s.endpoint.Host, serviceName)
|
|
res, err := s.client.Do(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
s.ModifyEndpointIfRedirect(res)
|
|
defer ioutil.CheckClose(res.Body, &err)
|
|
|
|
if err = NewErr(res); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
ar := packp.NewAdvRefs()
|
|
if err = ar.Decode(res.Body); err != nil {
|
|
if err == packp.ErrEmptyAdvRefs {
|
|
err = transport.ErrEmptyRemoteRepository
|
|
}
|
|
|
|
return nil, err
|
|
}
|
|
|
|
transport.FilterUnsupportedCapabilities(ar.Capabilities)
|
|
s.advRefs = ar
|
|
|
|
return ar, nil
|
|
}
|
|
|
|
type client struct {
|
|
c *http.Client
|
|
}
|
|
|
|
// DefaultClient is the default HTTP client, which uses `http.DefaultClient`.
|
|
var DefaultClient = NewClient(nil)
|
|
|
|
// NewClient creates a new client with a custom net/http client.
|
|
// See `InstallProtocol` to install and override default http client.
|
|
// Unless a properly initialized client is given, it will fall back into
|
|
// `http.DefaultClient`.
|
|
//
|
|
// Note that for HTTP client cannot distinguist between private repositories and
|
|
// unexistent repositories on GitHub. So it returns `ErrAuthorizationRequired`
|
|
// for both.
|
|
func NewClient(c *http.Client) transport.Transport {
|
|
if c == nil {
|
|
return &client{http.DefaultClient}
|
|
}
|
|
|
|
return &client{
|
|
c: c,
|
|
}
|
|
}
|
|
|
|
func (c *client) NewUploadPackSession(ep *transport.Endpoint, auth transport.AuthMethod) (
|
|
transport.UploadPackSession, error) {
|
|
|
|
return newUploadPackSession(c.c, ep, auth)
|
|
}
|
|
|
|
func (c *client) NewReceivePackSession(ep *transport.Endpoint, auth transport.AuthMethod) (
|
|
transport.ReceivePackSession, error) {
|
|
|
|
return newReceivePackSession(c.c, ep, auth)
|
|
}
|
|
|
|
type session struct {
|
|
auth AuthMethod
|
|
client *http.Client
|
|
endpoint *transport.Endpoint
|
|
advRefs *packp.AdvRefs
|
|
}
|
|
|
|
func newSession(c *http.Client, ep *transport.Endpoint, auth transport.AuthMethod) (*session, error) {
|
|
s := &session{
|
|
auth: basicAuthFromEndpoint(ep),
|
|
client: c,
|
|
endpoint: ep,
|
|
}
|
|
if auth != nil {
|
|
a, ok := auth.(AuthMethod)
|
|
if !ok {
|
|
return nil, transport.ErrInvalidAuthMethod
|
|
}
|
|
|
|
s.auth = a
|
|
}
|
|
|
|
return s, nil
|
|
}
|
|
|
|
func (s *session) ApplyAuthToRequest(req *http.Request) {
|
|
if s.auth == nil {
|
|
return
|
|
}
|
|
|
|
s.auth.setAuth(req)
|
|
}
|
|
|
|
func (s *session) ModifyEndpointIfRedirect(res *http.Response) {
|
|
if res.Request == nil {
|
|
return
|
|
}
|
|
|
|
r := res.Request
|
|
if !strings.HasSuffix(r.URL.Path, infoRefsPath) {
|
|
return
|
|
}
|
|
|
|
h, p, err := net.SplitHostPort(r.URL.Host)
|
|
if err != nil {
|
|
h = r.URL.Host
|
|
}
|
|
if p != "" {
|
|
port, err := strconv.Atoi(p)
|
|
if err == nil {
|
|
s.endpoint.Port = port
|
|
}
|
|
}
|
|
s.endpoint.Host = h
|
|
|
|
s.endpoint.Protocol = r.URL.Scheme
|
|
s.endpoint.Path = r.URL.Path[:len(r.URL.Path)-len(infoRefsPath)]
|
|
}
|
|
|
|
func (*session) Close() error {
|
|
return nil
|
|
}
|
|
|
|
// AuthMethod is concrete implementation of common.AuthMethod for HTTP services
|
|
type AuthMethod interface {
|
|
transport.AuthMethod
|
|
setAuth(r *http.Request)
|
|
}
|
|
|
|
func basicAuthFromEndpoint(ep *transport.Endpoint) *BasicAuth {
|
|
u := ep.User
|
|
if u == "" {
|
|
return nil
|
|
}
|
|
|
|
return &BasicAuth{u, ep.Password}
|
|
}
|
|
|
|
// BasicAuth represent a HTTP basic auth
|
|
type BasicAuth struct {
|
|
Username, Password string
|
|
}
|
|
|
|
func (a *BasicAuth) setAuth(r *http.Request) {
|
|
if a == nil {
|
|
return
|
|
}
|
|
|
|
r.SetBasicAuth(a.Username, a.Password)
|
|
}
|
|
|
|
// Name is name of the auth
|
|
func (a *BasicAuth) Name() string {
|
|
return "http-basic-auth"
|
|
}
|
|
|
|
func (a *BasicAuth) String() string {
|
|
masked := "*******"
|
|
if a.Password == "" {
|
|
masked = "<empty>"
|
|
}
|
|
|
|
return fmt.Sprintf("%s - %s:%s", a.Name(), a.Username, masked)
|
|
}
|
|
|
|
// TokenAuth implements an http.AuthMethod that can be used with http transport
|
|
// to authenticate with HTTP token authentication (also known as bearer
|
|
// authentication).
|
|
//
|
|
// IMPORTANT: If you are looking to use OAuth tokens with popular servers (e.g.
|
|
// GitHub, Bitbucket, GitLab) you should use BasicAuth instead. These servers
|
|
// use basic HTTP authentication, with the OAuth token as user or password.
|
|
// Check the documentation of your git server for details.
|
|
type TokenAuth struct {
|
|
Token string
|
|
}
|
|
|
|
func (a *TokenAuth) setAuth(r *http.Request) {
|
|
if a == nil {
|
|
return
|
|
}
|
|
r.Header.Add("Authorization", fmt.Sprintf("Bearer %s", a.Token))
|
|
}
|
|
|
|
// Name is name of the auth
|
|
func (a *TokenAuth) Name() string {
|
|
return "http-token-auth"
|
|
}
|
|
|
|
func (a *TokenAuth) String() string {
|
|
masked := "*******"
|
|
if a.Token == "" {
|
|
masked = "<empty>"
|
|
}
|
|
return fmt.Sprintf("%s - %s", a.Name(), masked)
|
|
}
|
|
|
|
// Err is a dedicated error to return errors based on status code
|
|
type Err struct {
|
|
Response *http.Response
|
|
}
|
|
|
|
// NewErr returns a new Err based on a http response
|
|
func NewErr(r *http.Response) error {
|
|
if r.StatusCode >= http.StatusOK && r.StatusCode < http.StatusMultipleChoices {
|
|
return nil
|
|
}
|
|
|
|
switch r.StatusCode {
|
|
case http.StatusUnauthorized:
|
|
return transport.ErrAuthenticationRequired
|
|
case http.StatusForbidden:
|
|
return transport.ErrAuthorizationFailed
|
|
case http.StatusNotFound:
|
|
return transport.ErrRepositoryNotFound
|
|
}
|
|
|
|
return plumbing.NewUnexpectedError(&Err{r})
|
|
}
|
|
|
|
// StatusCode returns the status code of the response
|
|
func (e *Err) StatusCode() int {
|
|
return e.Response.StatusCode
|
|
}
|
|
|
|
func (e *Err) Error() string {
|
|
return fmt.Sprintf("unexpected requesting %q status code: %d",
|
|
e.Response.Request.URL, e.Response.StatusCode,
|
|
)
|
|
}
|