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| 1 | +// Copyright 2017 The StudyGolang Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a BSD-style |
| 3 | +// license that can be found in the LICENSE file. |
| 4 | +// http://studygolang.com |
| 5 | +// Author:polaris [email protected] |
| 6 | + |
| 7 | +package logic |
| 8 | + |
| 9 | +import ( |
| 10 | + . "db" |
| 11 | + "encoding/json" |
| 12 | + "errors" |
| 13 | + "io/ioutil" |
| 14 | + "model" |
| 15 | + |
| 16 | + "github.com/polaris1119/config" |
| 17 | + "golang.org/x/net/context" |
| 18 | + "golang.org/x/oauth2" |
| 19 | +) |
| 20 | + |
| 21 | +var githubConf *oauth2.Config |
| 22 | + |
| 23 | +const GithubAPIBaseUrl = "https://api.github.com" |
| 24 | + |
| 25 | +func init() { |
| 26 | + githubConf = &oauth2.Config{ |
| 27 | + ClientID: config.ConfigFile.MustValue("github", "client_id"), |
| 28 | + ClientSecret: config.ConfigFile.MustValue("github", "client_secret"), |
| 29 | + Scopes: []string{"user:email"}, |
| 30 | + Endpoint: oauth2.Endpoint{ |
| 31 | + AuthURL: "https://github.com/login/oauth/authorize", |
| 32 | + TokenURL: "https://github.com/login/oauth/access_token", |
| 33 | + }, |
| 34 | + } |
| 35 | +} |
| 36 | + |
| 37 | +type ThirdUserLogic struct{} |
| 38 | + |
| 39 | +var DefaultThirdUser = ThirdUserLogic{} |
| 40 | + |
| 41 | +func (ThirdUserLogic) GithubAuthCodeUrl(ctx context.Context) string { |
| 42 | + // Redirect user to consent page to ask for permission |
| 43 | + // for the scopes specified above. |
| 44 | + return githubConf.AuthCodeURL("state", oauth2.AccessTypeOffline) |
| 45 | +} |
| 46 | + |
| 47 | +func (self ThirdUserLogic) LoginFromGithub(ctx context.Context, code string) (*model.User, error) { |
| 48 | + objLog := GetLogger(ctx) |
| 49 | + |
| 50 | + githubUser, token, err := self.githubTokenAndUser(ctx, code) |
| 51 | + if err != nil { |
| 52 | + objLog.Errorln("LoginFromGithub githubTokenAndUser error:", err) |
| 53 | + return nil, err |
| 54 | + } |
| 55 | + |
| 56 | + bindUser := &model.BindUser{} |
| 57 | + // 是否已经授权过了 |
| 58 | + _, err = MasterDB.Where("username=? AND type=?", githubUser.Login, model.BindTypeGithub).Get(bindUser) |
| 59 | + if err != nil { |
| 60 | + objLog.Errorln("LoginFromGithub Get BindUser error:", err) |
| 61 | + return nil, err |
| 62 | + } |
| 63 | + |
| 64 | + if bindUser.Uid > 0 { |
| 65 | + // 更新 token 信息 |
| 66 | + bindUser.AccessToken = token.AccessToken |
| 67 | + bindUser.RefreshToken = token.RefreshToken |
| 68 | + if !token.Expiry.IsZero() { |
| 69 | + bindUser.Expire = int(token.Expiry.Unix()) |
| 70 | + } |
| 71 | + _, err = MasterDB.Where("uid=?", bindUser.Uid).Update(bindUser) |
| 72 | + if err != nil { |
| 73 | + objLog.Errorln("LoginFromGithub update token error:", err) |
| 74 | + return nil, err |
| 75 | + } |
| 76 | + |
| 77 | + user := DefaultUser.FindOne(ctx, "uid", bindUser.Uid) |
| 78 | + return user, nil |
| 79 | + } |
| 80 | + |
| 81 | + exists := DefaultUser.EmailOrUsernameExists(ctx, githubUser.Email, githubUser.Login) |
| 82 | + if exists { |
| 83 | + // TODO: 考虑改进？ |
| 84 | + objLog.Errorln("LoginFromGithub Github 对应的用户信息被占用") |
| 85 | + return nil, errors.New("Github 对应的用户信息被占用，可能你注册过本站，用户名密码登录试试！") |
| 86 | + } |
| 87 | + |
| 88 | + session := MasterDB.NewSession() |
| 89 | + defer session.Close() |
| 90 | + session.Begin() |
| 91 | + |
| 92 | + // 生成本站用户 |
| 93 | + user := &model.User{ |
| 94 | + Email: githubUser.Email, |
| 95 | + Username: githubUser.Login, |
| 96 | + Name: githubUser.Name, |
| 97 | + City: githubUser.Location, |
| 98 | + Company: githubUser.Company, |
| 99 | + Github: githubUser.Login, |
| 100 | + Website: githubUser.Blog, |
| 101 | + IsThird: 1, |
| 102 | + Status: model.UserStatusAudit, |
| 103 | + } |
| 104 | + err = DefaultUser.doCreateUser(ctx, session, user) |
| 105 | + if err != nil { |
| 106 | + session.Rollback() |
| 107 | + objLog.Errorln("LoginFromGithub doCreateUser error:", err) |
| 108 | + return nil, err |
| 109 | + } |
| 110 | + |
| 111 | + bindUser = &model.BindUser{ |
| 112 | + Uid: user.Uid, |
| 113 | + Type: model.BindTypeGithub, |
| 114 | + Email: user.Email, |
| 115 | + Tuid: githubUser.Id, |
| 116 | + Username: githubUser.Login, |
| 117 | + Name: githubUser.Name, |
| 118 | + AccessToken: token.AccessToken, |
| 119 | + RefreshToken: token.RefreshToken, |
| 120 | + Avatar: githubUser.AvatarUrl, |
| 121 | + } |
| 122 | + if !token.Expiry.IsZero() { |
| 123 | + bindUser.Expire = int(token.Expiry.Unix()) |
| 124 | + } |
| 125 | + _, err = session.Insert(bindUser) |
| 126 | + if err != nil { |
| 127 | + session.Rollback() |
| 128 | + objLog.Errorln("LoginFromGithub bindUser error:", err) |
| 129 | + return nil, err |
| 130 | + } |
| 131 | + |
| 132 | + session.Commit() |
| 133 | + |
| 134 | + return user, nil |
| 135 | +} |
| 136 | + |
| 137 | +func (self ThirdUserLogic) BindGithub(ctx context.Context, code string, me *model.Me) error { |
| 138 | + objLog := GetLogger(ctx) |
| 139 | + |
| 140 | + githubUser, token, err := self.githubTokenAndUser(ctx, code) |
| 141 | + if err != nil { |
| 142 | + objLog.Errorln("LoginFromGithub githubTokenAndUser error:", err) |
| 143 | + return err |
| 144 | + } |
| 145 | + |
| 146 | + bindUser := &model.BindUser{} |
| 147 | + // 是否已经授权过了 |
| 148 | + _, err = MasterDB.Where("username=? AND type=?", githubUser.Login, model.BindTypeGithub).Get(bindUser) |
| 149 | + if err != nil { |
| 150 | + objLog.Errorln("LoginFromGithub Get BindUser error:", err) |
| 151 | + return err |
| 152 | + } |
| 153 | + |
| 154 | + if bindUser.Uid > 0 { |
| 155 | + // 更新 token 信息 |
| 156 | + bindUser.AccessToken = token.AccessToken |
| 157 | + bindUser.RefreshToken = token.RefreshToken |
| 158 | + if !token.Expiry.IsZero() { |
| 159 | + bindUser.Expire = int(token.Expiry.Unix()) |
| 160 | + } |
| 161 | + _, err = MasterDB.Where("uid=?", bindUser.Uid).Update(bindUser) |
| 162 | + if err != nil { |
| 163 | + objLog.Errorln("LoginFromGithub update token error:", err) |
| 164 | + return err |
| 165 | + } |
| 166 | + |
| 167 | + return nil |
| 168 | + } |
| 169 | + |
| 170 | + bindUser = &model.BindUser{ |
| 171 | + Uid: me.Uid, |
| 172 | + Type: model.BindTypeGithub, |
| 173 | + Email: githubUser.Email, |
| 174 | + Tuid: githubUser.Id, |
| 175 | + Username: githubUser.Login, |
| 176 | + Name: githubUser.Name, |
| 177 | + AccessToken: token.AccessToken, |
| 178 | + RefreshToken: token.RefreshToken, |
| 179 | + Avatar: githubUser.AvatarUrl, |
| 180 | + } |
| 181 | + if !token.Expiry.IsZero() { |
| 182 | + bindUser.Expire = int(token.Expiry.Unix()) |
| 183 | + } |
| 184 | + _, err = MasterDB.Insert(bindUser) |
| 185 | + if err != nil { |
| 186 | + objLog.Errorln("LoginFromGithub insert bindUser error:", err) |
| 187 | + return err |
| 188 | + } |
| 189 | + |
| 190 | + return nil |
| 191 | +} |
| 192 | + |
| 193 | +func (ThirdUserLogic) githubTokenAndUser(ctx context.Context, code string) (*model.GithubUser, *oauth2.Token, error) { |
| 194 | + token, err := githubConf.Exchange(ctx, code) |
| 195 | + if err != nil { |
| 196 | + return nil, nil, err |
| 197 | + } |
| 198 | + |
| 199 | + httpClient := githubConf.Client(ctx, token) |
| 200 | + resp, err := httpClient.Get(GithubAPIBaseUrl + "/user") |
| 201 | + if err != nil { |
| 202 | + return nil, nil, err |
| 203 | + } |
| 204 | + defer resp.Body.Close() |
| 205 | + |
| 206 | + respBytes, err := ioutil.ReadAll(resp.Body) |
| 207 | + if err != nil { |
| 208 | + return nil, nil, err |
| 209 | + } |
| 210 | + |
| 211 | + githubUser := &model.GithubUser{} |
| 212 | + err = json.Unmarshal(respBytes, githubUser) |
| 213 | + if err != nil { |
| 214 | + return nil, nil, err |
| 215 | + } |
| 216 | + |
| 217 | + if githubUser.Id == 0 { |
| 218 | + return nil, nil, errors.New("get github user info error") |
| 219 | + } |
| 220 | + |
| 221 | + return githubUser, token, nil |
| 222 | +} |
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