add google oauth2 support

routers/user/social_github.go

@@ -0,0 +1,68 @@
+package user
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"code.google.com/p/goauth2/oauth"
+	"github.com/gogits/gogs/models"
+	"github.com/gogits/gogs/modules/base"
+)
+
+type SocialGithub struct {
+	Token *oauth.Token
+	*oauth.Transport
+}
+
+func (s *SocialGithub) Type() int {
+	return models.OT_GITHUB
+}
+
+func init() {
+	github := &SocialGithub{}
+	name := "github"
+	config := &oauth.Config{
+		ClientId:     "09383403ff2dc16daaa1",                                       //base.OauthService.GitHub.ClientId, // FIXME: panic when set
+		ClientSecret: "0e4aa0c3630df396cdcea01a9d45cacf79925fea",                   //base.OauthService.GitHub.ClientSecret,
+		RedirectURL:  strings.TrimSuffix(base.AppUrl, "/") + "/user/login/" + name, //ctx.Req.URL.RequestURI(),
+		Scope:        "https://api.github.com/user",
+		AuthURL:      "https://github.com/login/oauth/authorize",
+		TokenURL:     "https://github.com/login/oauth/access_token",
+	}
+	github.Transport = &oauth.Transport{
+		Config:    config,
+		Transport: http.DefaultTransport,
+	}
+	SocialMap[name] = github
+}
+
+func (s *SocialGithub) SetRedirectUrl(url string) {
+	s.Transport.Config.RedirectURL = url
+}
+
+func (s *SocialGithub) UserInfo(token *oauth.Token) (*BasicUserInfo, error) {
+	transport := &oauth.Transport{
+		Token: token,
+	}
+	var data struct {
+		Id    int    `json:"id"`
+		Name  string `json:"login"`
+		Email string `json:"email"`
+	}
+	var err error
+	r, err := transport.Client().Get(s.Transport.Scope)
+	if err != nil {
+		return nil, err
+	}
+	defer r.Body.Close()
+	if err = json.NewDecoder(r.Body).Decode(&data); err != nil {
+		return nil, err
+	}
+	return &BasicUserInfo{
+		Identity: strconv.Itoa(data.Id),
+		Name:     data.Name,
+		Email:    data.Email,
+	}, nil
+}