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 credentials 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
  33                 $user = common_current_user();
  34                 $profile = $user->getProfile();
  35                 $fuser = Foreign_user::getForeignUser($user->id, 0);
  36
  37                 $this->form_header(_('Twitter settings'), $msg, $success);
  38
  39                 common_element_start('form', array('method' => 'post',
  40                                                                                    'id' => 'twittersettings',
  41                                                                                    'action' =>
  42                                                                                    common_local_url('twittersettings')));
  43
  44                 if ($fuser) {
  45
  46                         common_element_start('p');
  47
  48                         common_element('span', 'Twitter User', "http://www.twitter.com/$fuser->nickname");
  49                         common_element('span', 'input_instructions',
  50                                        _('Current verified Twitter User'));
  51                         common_hidden('fuser_id', $fuser->id);
  52
  53                         common_element_end('p');
  54                         common_submit('remove', _('Remove'));
  55
  56                 } else {
  57
  58                         // XXX: Should we make an educated guess as to the twitter accnt name? -- Zach
  59                         common_input('twitter_username', _('Twitter Username'),
  60                                                  ($this->arg('twitter_username')) ? $this->arg('twitter_username') : $profile->nickname,
  61                                                  _('No spaces, please.')); // hey, it's what Twitter says
  62
  63                         common_password('twitter_password', _('Twitter Password'));
  64
  65                         common_submit('add', _('Add'));
  66
  67                 }
  68
  69                 common_element('h2', NULL, _('Preferences'));
  70
  71                 // XXX: these checkboxes don't do anything yet
  72                 common_checkbox('repost', _('Automatically send my notices to Twitter.'), true);
  73                 common_checkbox('subscribe_friends', _('Subscribe to my Twitter friends here.'), true);
  74
  75                 common_submit('save', _('Save'));
  76
  77                 common_element_end('form');
  78                 common_show_footer();
  79         }
  80
  81         function handle_post() {
  82
  83                 if ($this->arg('save')) {
  84                         $this->save_preferences();
  85                 } else if ($this->arg('add')) {
  86                         $this->add_twitter_acct();
  87                 } else if ($this->arg('remove')) {
  88                         $this->remove_twitter_acct();
  89                 } else {
  90                         $this->show_form(_('Unexpected form submission.'));
  91                 }
  92         }
  93
  94         function add_twitter_acct() {
  95
  96                 $user = common_current_user();
  97                 $fuser = Foreign_user::getForeignUser($user->id, 0);
  98
  99
 100                 $twitter_username = $this->trimmed('twitter_username');
 101                 $twitter_password = $this->trimmed('twitter_password');
 102
 103                 if (!Validate::string($twitter_username, array('min_length' => 1,
 104                                                                                            'max_length' => 64,
 105                                                                                            'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
 106                         $this->show_form(_('Username must have only lowercase letters and numbers and no spaces.'));
 107                         return;
 108                 }
 109
 110                 // Verify this is a real Twitter user.
 111                 if (!$this->verify_credentials($twitter_username, $twitter_password)) {
 112                         $this->show_form(_('Could not verify your Twitter credentials!'));
 113                         return;
 114                 }
 115
 116                 // Now that we have a valid Twitter user, we have to make another api call to
 117                 // find its Twitter ID.  Dumb, but true.
 118                 $twitter_id = $this->get_twitter_id($twitter_username);
 119
 120                 if (!$twitter_id) {
 121                         $this->show_form(sprintf(_('Unable to retrieve account information for "%s" from Twitter.'), $twitter_username));
 122                         return;
 123                 }
 124
 125                 $user = common_current_user();
 126
 127                 $fuser = Foreign_user::save(
 128                                 array(
 129                                         'id' => $twitter_id,
 130                                         'service' => '0', // Twitter
 131                                         'uri' => "http://www.twitter.com/$twitter_username",
 132                                         'nickname' => $twitter_username,
 133                                         'user_id' => $user->id,
 134                                         'credentials' => $twitter_password
 135                                 ));
 136
 137                 if (!$fuser) {
 138                         $this->show_form(_('Unable to save your Twitter credentials!'));
 139                 }
 140
 141                 $this->show_form(_('Twitter settings saved.'), true);
 142         }
 143
 144         function remove_twitter_acct() {
 145
 146                 $user = common_current_user();
 147                 $fuser = Foreign_user::getForeignUser($user->id, 0);
 148
 149                 $fuser_id = $this->arg('fuser_id');
 150
 151                 # Maybe an old tab open...?
 152
 153                 if ($fuser->id != $fuser_id) {
 154                     $this->show_form(_('That is not your Twitter account.'));
 155                     return;
 156                 }
 157
 158                 $result = $fuser->delete();
 159
 160                 if (!$result) {
 161                         common_log_db_error($user, 'UPDATE', __FILE__);
 162                         common_server_error(_('Couldn\'t remove Twitter user.'));
 163                         return;
 164                 }
 165
 166                 $this->show_form(_('Twitter account removed.'), TRUE);
 167         }
 168
 169         function save_preferences() {
 170
 171                 $user = common_current_user();
 172                 $fuser = Foreign_user::getForeignUser($user->id, 0);
 173
 174                 $this->show_form(_('Save doesn\'t do anything yet.'));
 175
 176                 return;
 177         }
 178
 179         function get_twitter_id($twitter_username) {
 180
 181                 $uri = "http://twitter.com/users/show/$twitter_username.json";
 182                 $data = $this->get_twitter_data($uri);
 183
 184                 if (!$data) {
 185                         return NULL;
 186                 }
 187
 188                 $user = json_decode($data);
 189
 190                 if (!$user) {
 191                         return NULL;
 192                 }
 193
 194                 return $user->id;
 195         }
 196
 197         function verify_credentials($user, $password) {
 198
 199                 $uri = 'http://twitter.com/account/verify_credentials.json';
 200                 $data = $this->get_twitter_data($uri, $user, $password);
 201
 202                 if (!$data) {
 203                         return false;
 204                 }
 205
 206                 $creds = json_decode($data);
 207
 208                 if (!$creds) {
 209                         return false;
 210                 }
 211
 212                 if ($creds->authorized == 1) {
 213                         return true;
 214                 }
 215
 216                 return false;
 217         }
 218
 219         // PHP's cURL the best thing to use here? -- Zach
 220         function get_twitter_data($uri, $user=NULL, $password=NULL) {
 221                 $options = array(
 222                                 CURLOPT_USERPWD => "$user:$password",
 223                                 CURLOPT_RETURNTRANSFER  => true,
 224                                 CURLOPT_FAILONERROR             => true,
 225                                 CURLOPT_HEADER                  => false,
 226                                 CURLOPT_FOLLOWLOCATION  => true,
 227                                 // CURLOPT_USERAGENT            => "identi.ca",
 228                                 CURLOPT_CONNECTTIMEOUT  => 120,
 229                                 CURLOPT_TIMEOUT                 => 120
 230                 );
 231
 232                 $ch = curl_init($uri);
 233             curl_setopt_array($ch, $options);
 234             $data = curl_exec($ch);
 235             $errmsg = curl_error($ch);
 236
 237                 if ($errmsg) {
 238                         common_debug("cURL error: $errmsg - trying to load: $uri with user $user.", __FILE__);
 239                 }
 240
 241                 curl_close($ch);
 242                 return $data;
 243         }
 244
 245
 246 }