forgejo/routers/user/social.go

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// 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.
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package user
import (
"encoding/json"
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"net/http"
"net/url"
"strconv"
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"strings"
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"code.google.com/p/goauth2/oauth"
"github.com/gogits/gogs/models"
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"github.com/gogits/gogs/modules/base"
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"github.com/gogits/gogs/modules/log"
"github.com/gogits/gogs/modules/middleware"
"github.com/gogits/gogs/modules/oauth2"
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)
type SocialConnector interface {
Identity() string
Type() int
Name() string
Email() string
Token() string
}
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type SocialGithub struct {
data struct {
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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
}
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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 {
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scope := "https://api.github.com/user"
transport := &oauth.Transport{
Token: s.WebToken,
}
log.Debug("update github info")
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r, err := transport.Client().Get(scope)
if err != nil {
return err
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}
defer r.Body.Close()
return json.NewDecoder(r.Body).Decode(&s.data)
}
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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) {
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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
}
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config := &oauth.Config{
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ClientId: base.OauthService.GitHub.ClientId,
ClientSecret: base.OauthService.GitHub.ClientSecret,
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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",
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}
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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
}
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// 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 {
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// FIXME: handle error page 501
log.Error("connect with github error: %s", err)
return
}
var soc SocialConnector = gh
log.Info("login: %s", soc.Name())
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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()
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log.Debug("oa: %v", oa)
if err = models.AddOauth2(oa); err != nil {
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log.Error("add oauth2 %v", err) // 501
return
}
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case models.ErrOauth2NotAssociatedWithUser:
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// ignore it. judge in /usr/login page
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default:
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log.Error(err.Error()) // FIXME: handle error page
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return
}
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ctx.Session.Set("socialId", oa.Id)
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log.Debug("socialId: %v", oa.Id)
ctx.Redirect(next)
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}