1 files changed, 159 insertions, 0 deletions
diff --git a/routers/user/social.go b/routers/user/social.go
new file mode 100644
index 0000000000..b87c313f5d
--- /dev/null
+++ b/routers/user/social.go
@@ -0,0 +1,159 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package user
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"code.google.com/p/goauth2/oauth"
+
+	"github.com/gogits/gogs/models"
+	"github.com/gogits/gogs/modules/base"
+	"github.com/gogits/gogs/modules/log"
+	"github.com/gogits/gogs/modules/middleware"
+	"github.com/gogits/gogs/modules/oauth2"
+)
+
+type SocialConnector interface {
+	Identity() string
+	Type() int
+	Name() string
+	Email() string
+	Token() string
+}
+
+type SocialGithub struct {
+	data struct {
+		Id    int    `json:"id"`
+		Name  string `json:"login"`
+		Email string `json:"email"`
+	}
+	WebToken *oauth.Token
+}
+
+func (s *SocialGithub) Identity() string {
+	return strconv.Itoa(s.data.Id)
+}
+
+func (s *SocialGithub) Type() int {
+	return models.OT_GITHUB
+}
+
+func (s *SocialGithub) Name() string {
+	return s.data.Name
+}
+
+func (s *SocialGithub) Email() string {
+	return s.data.Email
+}
+
+func (s *SocialGithub) Token() string {
+	data, _ := json.Marshal(s.WebToken)
+	return string(data)
+}
+
+// Github API refer: https://developer.github.com/v3/users/
+func (s *SocialGithub) Update() error {
+	scope := "https://api.github.com/user"
+	transport := &oauth.Transport{
+		Token: s.WebToken,
+	}
+	log.Debug("update github info")
+	r, err := transport.Client().Get(scope)
+	if err != nil {
+		return err
+	}
+	defer r.Body.Close()
+	return json.NewDecoder(r.Body).Decode(&s.data)
+}
+
+func extractPath(next string) string {
+	n, err := url.Parse(next)
+	if err != nil {
+		return "/"
+	}
+	return n.Path
+}
+
+// github && google && ...
+func SocialSignIn(ctx *middleware.Context, tokens oauth2.Tokens) {
+	var socid int64
+	var ok bool
+	next := extractPath(ctx.Query("next"))
+	log.Debug("social signed check %s", next)
+	if socid, ok = ctx.Session.Get("socialId").(int64); ok && socid != 0 {
+		// already login
+		ctx.Redirect(next)
+		log.Info("login soc id: %v", socid)
+		return
+	}
+	config := &oauth.Config{
+		//ClientId: base.OauthService.Github.ClientId,
+		//ClientSecret: base.OauthService.Github.ClientSecret, // FIXME: I don't know why compile error here
+		ClientId:     "09383403ff2dc16daaa1",
+		ClientSecret: "0e4aa0c3630df396cdcea01a9d45cacf79925fea",
+		RedirectURL:  strings.TrimSuffix(base.AppUrl, "/") + ctx.Req.URL.RequestURI(),
+		Scope:        base.OauthService.GitHub.Scopes,
+		AuthURL:      "https://github.com/login/oauth/authorize",
+		TokenURL:     "https://github.com/login/oauth/access_token",
+	}
+	transport := &oauth.Transport{
+		Config:    config,
+		Transport: http.DefaultTransport,
+	}
+	code := ctx.Query("code")
+	if code == "" {
+		// redirect to social login page
+		ctx.Redirect(config.AuthCodeURL(next))
+		return
+	}
+
+	// handle call back
+	tk, err := transport.Exchange(code)
+	if err != nil {
+		log.Error("oauth2 handle callback error: %v", err)
+		return // FIXME, need error page 501
+	}
+	next = extractPath(ctx.Query("state"))
+	log.Debug("success token: %v", tk)
+
+	gh := &SocialGithub{WebToken: tk}
+	if err = gh.Update(); err != nil {
+		// FIXME: handle error page 501
+		log.Error("connect with github error: %s", err)
+		return
+	}
+	var soc SocialConnector = gh
+	log.Info("login: %s", soc.Name())
+	oa, err := models.GetOauth2(soc.Identity())
+	switch err {
+	case nil:
+		ctx.Session.Set("userId", oa.User.Id)
+		ctx.Session.Set("userName", oa.User.Name)
+	case models.ErrOauth2RecordNotExists:
+		oa = &models.Oauth2{}
+		oa.Uid = 0
+		oa.Type = soc.Type()
+		oa.Token = soc.Token()
+		oa.Identity = soc.Identity()
+		log.Debug("oa: %v", oa)
+		if err = models.AddOauth2(oa); err != nil {
+			log.Error("add oauth2 %v", err) // 501
+			return
+		}
+	case models.ErrOauth2NotAssociatedWithUser:
+		// ignore it. judge in /usr/login page
+	default:
+		log.Error(err.Error()) // FIXME: handle error page
+		return
+	}
+	ctx.Session.Set("socialId", oa.Id)
+	log.Debug("socialId: %v", oa.Id)
+	ctx.Redirect(next)
+}