mod/dfrn_confirm.php

   1 <?php
   2
   3
   4
   5 function dfrn_confirm_post(&$a) {
   6
   7         if($a->argc > 1)
   8                 $node = $a->argv[1];
   9
  10         if(x($_POST,'source_url')) {
  11
  12                 // We are processing an external confirmation to an introduction created by our user.
  13
  14                 $public_key = $_POST['public_key'];
  15                 $dfrn_id = $_POST['dfrn_id'];
  16                 $source_url = $_POST['source_url'];
  17                 $aes_key = $_POST['aes_key'];
  18
  19                 // Find our user's account
  20
  21                 $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  22                         dbesc($node));
  23
  24                 if(! count($r)) {
  25                         xml_status(3); // failure
  26                 }
  27
  28                 $my_prvkey = $r[0]['prvkey'];
  29                 $local_uid = $r[0]['uid'];
  30
  31                 $decrypted_source_url = "";
  32
  33                 // verify everything
  34
  35                 openssl_private_decrypt($source_url,$decrypted_source_url,$my_prvkey);
  36
  37
  38                 $ret = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
  39                         dbesc($decrypted_source_url),
  40                         intval($local_uid));
  41
  42                 if(! count($ret)) {
  43                         // this is either a bogus confirmation or we deleted the original introduction.
  44                         xml_status(3);
  45                 }
  46
  47                 // Decrypt all this stuff we just received
  48
  49                 $foreign_pubkey = $ret[0]['site-pubkey'];
  50                 $dfrn_record = $ret[0]['id'];
  51                 $decrypted_dfrn_id = "";
  52                 openssl_public_decrypt($dfrn_id,$decrypted_dfrn_id,$foreign_pubkey);
  53
  54                 if(strlen($aes_key)) {
  55                         $decrypted_aes_key = "";
  56                         openssl_private_decrypt($aes_key,$decrypted_aes_key,$my_prvkey);
  57                         $dfrn_pubkey = openssl_decrypt($public_key,'AES-256-CBC',$decrypted_aes_key);
  58                 }
  59                 else {
  60                         $dfrn_pubkey = $public_key;
  61                 }
  62
  63                 $r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
  64                         dbesc($decrypted_dfrn_id),
  65                         intval($local_uid));
  66                 if(count($r))
  67                         xml_status(1); // Birthday paradox - duplicate dfrn-id
  68
  69                 $r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
  70                         dbesc($decrypted_dfrn_id),
  71                         dbesc($dfrn_pubkey),
  72                         intval($dfrn_record));
  73                 if($r) {
  74
  75                         // We're good but now we have to scrape the profile photo and send notifications.
  76
  77                         require_once("Photo.php");
  78
  79                         $photo_failure = false;
  80
  81                         $r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
  82                                 intval($dfrn_record));
  83                         if(count($r)) {
  84
  85                                 $filename = basename($r[0]['photo']);
  86                                 $img_str = fetch_url($r[0]['photo'],true);
  87                                 $img = new Photo($img_str);
  88                                 if($img) {
  89
  90                                         $img->scaleImageSquare(175);
  91
  92                                         $hash = hash('md5',uniqid(mt_rand(),true));
  93
  94                                         $r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
  95                                                 `height`, `width`, `data`, `scale` )
  96                                                 VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
  97                                                 intval($local_uid),
  98                                                 dbesc($hash),
  99                                                 datetime_convert(),
 100                                                 datetime_convert(),
 101                                                 dbesc(basename($r[0]['photo'])),
 102                                                 intval($img->getHeight()),
 103                                                 intval($img->getWidth()),
 104                                                 dbesc($img->imageString())
 105                                         );
 106                                         if($r === false)
 107                                                 $photo_failure = true;
 108
 109                                         $img->scaleImage(80);
 110                                         $r =  q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
 111                                                 `height`, `width`, `data`, `scale` )
 112                                                 VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
 113                                                 intval($local_uid),
 114                                                 dbesc($hash),
 115                                                 datetime_convert(),
 116                                                 datetime_convert(),
 117                                                 dbesc(basename($r[0]['photo'])),
 118                                                 intval($img->getHeight()),
 119                                                 intval($img->getWidth()),
 120                                                 dbesc($img->imageString())
 121                                         );
 122                                         if($r === false)
 123                                                 $photo_failure = true;
 124
 125                                         $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 126                                         $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 127
 128                                 }
 129                                 else
 130                                         $photo_failure = true;
 131                         }
 132                         else
 133                                 $photo_failure = true;
 134
 135                         if($photo_failure) {
 136                                 $photo = $a->get_baseurl() . '/images/default-profile.jpg';
 137                                 $thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
 138                         }
 139
 140                         $r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
 141                                 dbesc($photo),
 142                                 dbesc($thumb),
 143                                 intval($dfrn_record)
 144                         );
 145                         if($r === false)
 146                                 notice( t("Unable to set contact photo info.") . EOL);
 147
 148                         // Otherwise everything seems to have worked and we are almost done. Yay!
 149                         // Send an email notification
 150
 151                         $r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 152                                 WHERE `contact`.`id` = %d LIMIT 1",
 153                                 intval($dfrn_record));
 154                         if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {
 155
 156                                 $tpl = file_get_contents('view/intro_complete_eml.tpl');
 157
 158                                 $email_tpl = replace_macros($tpl, array(
 159                                         '$sitename' => $a->config['sitename'],
 160                                         '$siteurl' =>  $a->get_baseurl(),
 161                                         '$username' => $r[0]['username'],
 162                                         '$email' => $r[0]['email'],
 163                                         '$fn' => $r[0]['name'],
 164                                         '$dfrn_url' => $r[0]['url'],
 165                                         '$uid' => $newuid )
 166                                 );
 167
 168                                 $res = mail($r[0]['email'], t("Introduction accepted at ") . $a->config['sitename'],
 169                                         $email_tpl,t("From: Administrator@") . $_SERVER[SERVER_NAME] );
 170                                 if(!$res) {
 171                                         notice( t("Email notification failed.") . EOL );
 172                                 }
 173                         }
 174                         xml_status(0); // Success
 175
 176                         return; // NOTREACHED
 177                 }
 178                 else {
 179                         xml_status(2);  // Hopefully temporary problem that can be retried.
 180                 }
 181                 return; // NOTREACHED
 182
 183         ////////////////////// End of this scenario ///////////////////////////////////////////////
 184         }
 185         else {
 186
 187                 // We are processing a local confirmation initiated on this system by our user to an external introduction.
 188
 189                 $uid = $_SESSION['uid'];
 190
 191                 if(! $uid) {
 192                         notice(t("Permission denied.") . EOL );
 193                         return;
 194                 }
 195
 196                 $dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
 197                 $intro_id = intval($_POST['intro_id']);
 198
 199                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
 200                                 dbesc($dfrn_id),
 201                                 intval($uid)
 202                                 );
 203
 204                 if((! $r) || (! count($r))) {
 205                         notice( t('Node does not exist.') . EOL );
 206                         return;
 207                 }
 208
 209                 $contact_id = $r[0]['id'];
 210                 $site_pubkey = $r[0]['site-pubkey'];
 211                 $dfrn_confirm = $r[0]['confirm'];
 212                 $aes_allow = $r[0]['aes_allow'];
 213
 214                 $res=openssl_pkey_new(array(
 215                         'digest_alg' => 'whirlpool',
 216                         'private_key_bits' => 4096,
 217                         'encrypt_key' => false ));
 218
 219
 220                 $private_key = '';
 221
 222                 openssl_pkey_export($res, $private_key);
 223
 224
 225                 $pubkey = openssl_pkey_get_details($res);
 226                 $public_key = $pubkey["key"];
 227
 228                 $r = q("UPDATE `contact` SET `issued-pubkey` = '%s', `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 229                         dbesc($public_key),
 230                         dbesc($private_key),
 231                         intval($contact_id),
 232                         intval($uid)
 233                 );
 234
 235
 236                 $params = array();
 237
 238                 $src_aes_key = random_string();
 239                 $result = "";
 240
 241                 openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
 242
 243                 $params['dfrn_id'] = $result;
 244                 $params['public_key'] = $public_key;
 245
 246
 247                 openssl_public_encrypt($_SESSION['my_url'], $params['source_url'], $site_pubkey);
 248
 249                 if($aes_allow && function_exists('openssl_encrypt')) {
 250                         openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
 251                         $params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
 252                 }
 253
 254                 $res = post_url($dfrn_confirm,$params);
 255
 256 // uncomment the following two lines and comment the following xml/status lines
 257 // to debug the remote confirmation section (when both confirmations
 258 // and responses originate on this system)
 259
 260 // echo $res;
 261 // $status = 0;
 262
 263                 $xml = simplexml_load_string($res);
 264                 $status = (int) $xml->status;
 265                 switch($status) {
 266                         case 0:
 267                                 notice( t("Confirmation completed successfully") . EOL);
 268                                 break;
 269                         case 1:
 270
 271                                 // birthday paradox - generate new dfrn-id and fall through.
 272
 273                                 $new_dfrn_id = random_string();
 274                                 $r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 275                                         dbesc($new_dfrn_id),
 276                                         intval($contact_id),
 277                                         intval($uid)
 278                                 );
 279
 280                         case 2:
 281                                 notice( t("Temporary failure. Please wait and try again.") . EOL);
 282                                 break;
 283
 284
 285                         case 3:
 286                                 notice( t("Introduction failed or was revoked. Cannot complete.") . EOL);
 287                                 break;
 288                 }
 289
 290                 if(($status == 0 || $status == 3) && ($intro_id)) {
 291
 292                         //delete the notification
 293
 294                         $r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 295                                 intval($intro_id),
 296                                 intval($uid)
 297                         );
 298
 299                 }
 300                 if($status != 0)
 301                         return;
 302
 303
 304                 require_once("Photo.php");
 305
 306                 $photo_failure = false;
 307
 308                 $r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
 309                         intval($contact_id));
 310                 if(count($r)) {
 311
 312                         $filename = basename($r[0]['photo']);
 313                         $img_str = fetch_url($r[0]['photo'],true);
 314                         $img = new Photo($img_str);
 315                         if($img) {
 316
 317                                 $img->scaleImageSquare(175);
 318
 319                                 $hash = hash('md5',uniqid(mt_rand(),true));
 320
 321                                 $r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
 322                                         `height`, `width`, `data`, `scale` )
 323                                         VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
 324                                         intval($local_uid),
 325                                         dbesc($hash),
 326                                         datetime_convert(),
 327                                         datetime_convert(),
 328                                         dbesc(basename($r[0]['photo'])),
 329                                         intval($img->getHeight()),
 330                                         intval($img->getWidth()),
 331                                         dbesc($img->imageString())
 332                                 );
 333                                 if($r === false)
 334                                         $photo_failure = true;
 335                                 $img->scaleImage(80);
 336                                 $r =  q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
 337                                         `height`, `width`, `data`, `scale` )
 338                                          VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
 339                                          intval($local_uid),
 340                                          dbesc($hash),
 341                                          datetime_convert(),
 342                                          datetime_convert(),
 343                                          dbesc(basename($r[0]['photo'])),
 344                                          intval($img->getHeight()),
 345                                          intval($img->getWidth()),
 346                                          dbesc($img->imageString())
 347                                 );
 348                                 if($r === false)
 349                                         $photo_failure = true;
 350
 351                                 $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 352                                 $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 353
 354                         }
 355                         else
 356                                 $photo_failure = true;
 357                 }
 358                 else
 359                         $photo_failure = true;
 360
 361                 if($photo_failure) {
 362                         $photo = $a->get_baseurl() . '/images/default-profile.jpg';
 363                         $thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
 364                 }
 365
 366                 $r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
 367                         dbesc($photo),
 368                         dbesc($thumb),
 369                         intval($contact_id)
 370                 );
 371                 if($r === false)
 372                         notice( t("Unable to set contact photo info.") . EOL);
 373
 374                 goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
 375                 return;  //NOTREACHED
 376
 377         }
 378
 379         return;
 380 }