actions/twittersettings.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 if (!defined('LACONICA')) { exit(1); }
  21
  22 require_once(INSTALLDIR.'/lib/settingsaction.php');
  23
  24 class TwittersettingsAction extends SettingsAction {
  25
  26         function get_instructions() {
  27                 return _('Add your Twitter account to automatically send your notices to Twitter, ' .
  28                         'and subscribe to Twitter friends already here.');
  29         }
  30
  31         function show_form($msg=NULL, $success=false) {
  32                 $user = common_current_user();
  33                 $profile = $user->getProfile();
  34                 $fuser = NULL;
  35                 $flink = Foreign_link::getForeignLink($user->id, 1); // 1 == Twitter
  36
  37                 if ($flink) {
  38                         $fuser = Foreign_user::getForeignUser($flink->foreign_id, 1);
  39                 }
  40
  41                 $this->form_header(_('Twitter settings'), $msg, $success);
  42                 common_element_start('form', array('method' => 'post',
  43                                                                                    'id' => 'twittersettings',
  44                                                                                    'action' =>
  45                                                                                    common_local_url('twittersettings')));
  46                 common_hidden('token', common_session_token());
  47
  48                 common_element('h2', NULL, _('Twitter Account'));
  49
  50                 if ($fuser) {
  51                         common_element_start('p');
  52
  53                         common_element('span', 'twitter_user', $fuser->nickname);
  54                         common_element('a', array('href' => $fuser->uri),  $fuser->uri);
  55                         common_element('span', 'input_instructions',
  56                                        _('Current verified Twitter account.'));
  57                         common_hidden('flink_foreign_id', $flink->foreign_id);
  58                         common_element_end('p');
  59                         common_submit('remove', _('Remove'));
  60                 } else {
  61
  62                         // XXX: Should we make an educated guess as to the twitter acct name? -- Zach
  63                         common_input('twitter_username', _('Twitter Username'),
  64                                                  ($this->arg('twitter_username')) ? $this->arg('twitter_username') : $profile->nickname,
  65                                                  _('No spaces, please.')); // hey, it's what Twitter says
  66
  67                         common_password('twitter_password', _('Twitter Password'));
  68                 }
  69
  70                 common_element('h2', NULL, _('Preferences'));
  71
  72                 if ($flink) {
  73                         common_checkbox('noticesync', _('Automatically send my notices to Twitter.'),
  74                                 ($flink->noticesync) ? true : false);
  75                         common_checkbox('friendsync', _('Subscribe to my Twitter friends here.'),
  76                                 ($flink->friendsync) ? true : false);
  77                         common_submit('save', _('Save'));
  78                 } else {
  79                         common_checkbox('noticesync', _('Automatically send my notices to Twitter.'), true);
  80                         common_checkbox('friendsync', _('Subscribe to my Twitter friends here.'), true);
  81                         common_submit('add', _('Add'));
  82                 }
  83
  84                 common_element_end('form');
  85                 common_show_footer();
  86         }
  87
  88         function handle_post() {
  89
  90                 # CSRF protection
  91                 $token = $this->trimmed('token');
  92                 if (!$token || $token != common_session_token()) {
  93                         $this->show_form(_('There was a problem with your session token. Try again, please.'));
  94                         return;
  95                 }
  96
  97                 if ($this->arg('save')) {
  98                         $this->save_preferences();
  99                 } else if ($this->arg('add')) {
 100                         $this->add_twitter_acct();
 101                 } else if ($this->arg('remove')) {
 102                         $this->remove_twitter_acct();
 103                 } else {
 104                         $this->show_form(_('Unexpected form submission.'));
 105                 }
 106         }
 107
 108         function add_twitter_acct() {
 109                 $twitter_username = $this->trimmed('twitter_username');
 110                 $twitter_password = $this->trimmed('twitter_password');
 111                 $noticesync = $this->boolean('noticesync');
 112                 $friendsync = $this->boolean('friendsync');
 113
 114                 if (!Validate::string($twitter_username, array('min_length' => 1,
 115                                                                                            'max_length' => 64,
 116                                                                                            'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
 117                         $this->show_form(_('Username must have only lowercase letters and numbers and no spaces.'));
 118                         return;
 119                 }
 120
 121                 // Verify this is a real Twitter user.
 122                 if (!$this->verify_credentials($twitter_username, $twitter_password)) {
 123                         $this->show_form(_('Could not verify your Twitter credentials!'));
 124                         return;
 125                 }
 126
 127                 // Now that we have a valid Twitter user, we have to make another api call to
 128                 // find its Twitter ID.  Dumb, but true.
 129                 $twitter_id = $this->get_twitter_id($twitter_username, $twitter_password);
 130
 131                 if (!$twitter_id) {
 132                         $this->show_form(sprintf(_('Unable to retrieve account information for "%s" from Twitter.'), $twitter_username));
 133                         return;
 134                 }
 135
 136                 $fuser = DB_DataObject::factory('foreign_user');
 137                 $fuser->id = $twitter_id;
 138                 $fuser->service = 1; // Twitter
 139                 $fuser->uri = "http://www.twitter.com/$twitter_username";
 140                 $fuser->nickname = $twitter_username;
 141                 $fuser->created = common_sql_now();
 142                 $result = $fuser->insert();
 143
 144                 if (!$result) {
 145                         common_log_db_error($fuser, 'INSERT', __FILE__);
 146                         $this->show_form(_('Unable to save your Twitter settings!'));
 147                         return;
 148                 }
 149
 150                 $user = common_current_user();
 151
 152                 $flink = DB_DataObject::factory('foreign_link');
 153                 $flink->user_id = $user->id;
 154                 $flink->foreign_id = $fuser->id;
 155                 $flink->service = 1; // Twitter
 156                 $flink->credentials = $twitter_password;
 157                 $flink->created = common_sql_now();
 158                 $flink->noticesync = ($noticesync) ? 1 : 0;
 159                 $flink->friendsync = ($friendsync) ? 2 : 0;
 160                 $flink->profilesync = 0; // XXX: leave as default?
 161                 $flink_id = $flink->insert();
 162
 163                 if (!$flink_id) {
 164                         common_log_db_error($flink, 'INSERT', __FILE__);
 165                         $this->show_form(_('Unable to save your Twitter settings!'));
 166                         return;
 167                 }
 168
 169                 $this->show_form(_('Twitter settings saved.'), true);
 170         }
 171
 172         function remove_twitter_acct() {
 173                 $user = common_current_user();
 174
 175                 // For now we assume one Twitter acct per Laconica acct
 176                 $flink = Foreign_link::getForeignLink($user->id, 1);
 177                 $fuser = Foreign_user::getForeignUser($flink->foreign_id, 1);
 178                 $flink_foreign_id = $this->arg('flink_foreign_id');
 179
 180                 if (!$flink) {
 181                         common_debug("couldn't get flink");
 182                 }
 183
 184                 # Maybe an old tab open...?
 185                 if ($flink->foreign_id != $flink_foreign_id) {
 186                         common_debug("flink user_id = " . $flink->user_id);
 187                     $this->show_form(_('That is not your Twitter account.'));
 188                     return;
 189                 }
 190
 191                 $result = $fuser->delete();
 192
 193                 if (!$result) {
 194                         common_log_db_error($fuser, 'DELETE', __FILE__);
 195                         $this->show_form(_('Couldn\'t remove Twitter user.'));
 196                         return;
 197                 }
 198
 199                 $result = $flink->delete();
 200
 201                 if (!$result) {
 202                         common_log_db_error($flink, 'DELETE', __FILE__);
 203                         common_server_error(_('Couldn\'t remove Twitter user.'));
 204                         return;
 205                 }
 206
 207                 $this->show_form(_('Twitter account removed.'), TRUE);
 208         }
 209
 210         function save_preferences() {
 211                 $noticesync = $this->boolean('noticesync');
 212                 $friendsync = $this->boolean('friendsync');
 213                 $user = common_current_user();
 214                 $flink = Foreign_link::getForeignLink($user->id, 1);
 215
 216                 if (!$flink) {
 217                         common_log_db_error($flink, 'SELECT', __FILE__);
 218                         $this->show_form(_('Couldn\'t save Twitter preferences.'));
 219                         return;
 220                 }
 221
 222                 $flink->noticesync = ($noticesync) ? 1 : 0;
 223                 $flink->friendsync = ($friendsync) ? 2 : 0;
 224                 // $flink->profilesync = 0; // XXX: leave as default?
 225                 $result = $flink->update();
 226
 227                 if (!$result) {
 228                         common_log_db_error($flink, 'UPDATE', __FILE__);
 229                         $this->show_form(_('Couldn\'t save Twitter preferences.'));
 230                         return;
 231                 }
 232
 233                 $this->show_form(_('Twitter preferences saved.'));
 234
 235                 return;
 236         }
 237
 238         function get_twitter_id($user, $password) {
 239                 $uri = "http://twitter.com/users/show/$user.json";
 240                 $data = $this->get_twitter_data($uri, $user, $password);
 241
 242                 if (!$data) {
 243                         return NULL;
 244                 }
 245
 246                 $user = json_decode($data);
 247
 248                 if (!$user) {
 249                         return NULL;
 250                 }
 251
 252                 return $user->id;
 253         }
 254
 255         function verify_credentials($user, $password) {
 256                 $uri = 'http://twitter.com/account/verify_credentials.json';
 257                 $data = $this->get_twitter_data($uri, $user, $password);
 258
 259                 if (!$data) {
 260                         return false;
 261                 }
 262
 263                 $creds = json_decode($data);
 264
 265                 if (!$creds) {
 266                         return false;
 267                 }
 268
 269                 if ($creds->authorized == 1) {
 270                         return true;
 271                 }
 272
 273                 return false;
 274         }
 275
 276         // PHP's cURL the best thing to use here? -- Zach
 277         function get_twitter_data($uri, $user=NULL, $password=NULL) {
 278                 $options = array(
 279                                 CURLOPT_USERPWD => "$user:$password",
 280                                 CURLOPT_RETURNTRANSFER  => true,
 281                                 CURLOPT_FAILONERROR             => true,
 282                                 CURLOPT_HEADER                  => false,
 283                                 CURLOPT_FOLLOWLOCATION  => true,
 284                                 // CURLOPT_USERAGENT            => "identi.ca",
 285                                 CURLOPT_CONNECTTIMEOUT  => 120,
 286                                 CURLOPT_TIMEOUT                 => 120
 287                 );
 288
 289                 $ch = curl_init($uri);
 290             curl_setopt_array($ch, $options);
 291             $data = curl_exec($ch);
 292             $errmsg = curl_error($ch);
 293
 294                 if ($errmsg) {
 295                         common_debug("cURL error: $errmsg - trying to load: $uri with user $user.", __FILE__);
 296                 }
 297
 298                 curl_close($ch);
 299
 300                 return $data;
 301         }
 302
 303 }