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                                         $r = q("INSERT INTO `photo` ( `uid`, `contact-id`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
  95                                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
  96                                                 intval($local_uid),
  97                                                 intval($dfrn_record),
  98                                                 dbesc($hash),
  99                                                 datetime_convert(),
 100                                                 datetime_convert(),
 101                                                 dbesc(basename($r[0]['photo'])),
 102                                                 dbesc( t('Contact Photos') ),
 103                                                 intval($img->getHeight()),
 104                                                 intval($img->getWidth()),
 105                                                 dbesc($img->imageString())
 106                                         );
 107                                         if($r === false)
 108                                                 $photo_failure = true;
 109
 110                                         $img->scaleImage(80);
 111                                         $r =  q("INSERT INTO `photo` ( `uid`, `contact-id`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
 112                                                 VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
 113                                                 intval($local_uid),
 114                                                 intval($dfrn_record),
 115                                                 dbesc($hash),
 116                                                 datetime_convert(),
 117                                                 datetime_convert(),
 118                                                 dbesc(basename($r[0]['photo'])),
 119                                                 dbesc( t('Contact Photos')),
 120                                                 intval($img->getHeight()),
 121                                                 intval($img->getWidth()),
 122                                                 dbesc($img->imageString())
 123                                         );
 124                                         if($r === false)
 125                                                 $photo_failure = true;
 126
 127                                         $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 128                                         $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 129                                 }
 130                                 else
 131                                         $photo_failure = true;
 132                         }
 133                         else
 134                                 $photo_failure = true;
 135
 136                         if($photo_failure) {
 137                                 $photo = $a->get_baseurl() . '/images/default-profile.jpg';
 138                                 $thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
 139                         }
 140
 141                         $r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
 142                                 dbesc($photo),
 143                                 dbesc($thumb),
 144                                 intval($dfrn_record)
 145                         );
 146                         if($r === false)
 147                                 notice( t("Unable to set contact photo info.") . EOL);
 148
 149                         // Otherwise everything seems to have worked and we are almost done. Yay!
 150                         // Send an email notification
 151
 152                         $r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 153                                 WHERE `contact`.`id` = %d LIMIT 1",
 154                                 intval($dfrn_record));
 155                         if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {
 156
 157                                 $tpl = file_get_contents('view/intro_complete_eml.tpl');
 158
 159                                 $email_tpl = replace_macros($tpl, array(
 160                                         '$sitename' => $a->config['sitename'],
 161                                         '$siteurl' =>  $a->get_baseurl(),
 162                                         '$username' => $r[0]['username'],
 163                                         '$email' => $r[0]['email'],
 164                                         '$fn' => $r[0]['name'],
 165                                         '$dfrn_url' => $r[0]['url'],
 166                                         '$uid' => $newuid )
 167                                 );
 168
 169                                 $res = mail($r[0]['email'], t("Introduction accepted at ") . $a->config['sitename'],
 170                                         $email_tpl,t("From: Administrator@") . $_SERVER[SERVER_NAME] );
 171                                 if(!$res) {
 172                                         notice( t("Email notification failed.") . EOL );
 173                                 }
 174                         }
 175                         xml_status(0); // Success
 176
 177                         return; // NOTREACHED
 178                 }
 179                 else {
 180                         xml_status(2);  // Hopefully temporary problem that can be retried.
 181                 }
 182                 return; // NOTREACHED
 183
 184         ////////////////////// End of this scenario ///////////////////////////////////////////////
 185         }
 186         else {
 187
 188                 // We are processing a local confirmation initiated on this system by our user to an external introduction.
 189
 190                 $uid = $_SESSION['uid'];
 191
 192                 if(! $uid) {
 193                         notice(t("Permission denied.") . EOL );
 194                         return;
 195                 }
 196
 197                 $dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
 198                 $intro_id = intval($_POST['intro_id']);
 199
 200                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
 201                                 dbesc($dfrn_id),
 202                                 intval($uid)
 203                                 );
 204
 205                 if((! $r) || (! count($r))) {
 206                         notice( t('Node does not exist.') . EOL );
 207                         return;
 208                 }
 209
 210                 $contact_id = $r[0]['id'];
 211                 $site_pubkey = $r[0]['site-pubkey'];
 212                 $dfrn_confirm = $r[0]['confirm'];
 213                 $aes_allow = $r[0]['aes_allow'];
 214
 215                 $res=openssl_pkey_new(array(
 216                         'digest_alg' => 'whirlpool',
 217                         'private_key_bits' => 4096,
 218                         'encrypt_key' => false ));
 219
 220
 221                 $private_key = '';
 222
 223                 openssl_pkey_export($res, $private_key);
 224
 225
 226                 $pubkey = openssl_pkey_get_details($res);
 227                 $public_key = $pubkey["key"];
 228
 229                 $r = q("UPDATE `contact` SET `issued-pubkey` = '%s', `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 230                         dbesc($public_key),
 231                         dbesc($private_key),
 232                         intval($contact_id),
 233                         intval($uid)
 234                 );
 235
 236
 237                 $params = array();
 238
 239                 $src_aes_key = random_string();
 240                 $result = "";
 241
 242                 openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
 243
 244                 $params['dfrn_id'] = $result;
 245                 $params['public_key'] = $public_key;
 246
 247
 248                 openssl_public_encrypt($_SESSION['my_url'], $params['source_url'], $site_pubkey);
 249
 250                 if($aes_allow && function_exists('openssl_encrypt')) {
 251                         openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
 252                         $params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
 253                 }
 254
 255                 $res = post_url($dfrn_confirm,$params);
 256
 257 // uncomment the following two lines and comment the following xml/status lines
 258 // to debug the remote confirmation section (when both confirmations
 259 // and responses originate on this system)
 260
 261 // echo $res;
 262 // $status = 0;
 263
 264                 $xml = simplexml_load_string($res);
 265                 $status = (int) $xml->status;
 266                 switch($status) {
 267                         case 0:
 268                                 notice( t("Confirmation completed successfully") . EOL);
 269                                 break;
 270                         case 1:
 271
 272                                 // birthday paradox - generate new dfrn-id and fall through.
 273
 274                                 $new_dfrn_id = random_string();
 275                                 $r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 276                                         dbesc($new_dfrn_id),
 277                                         intval($contact_id),
 278                                         intval($uid)
 279                                 );
 280
 281                         case 2:
 282                                 notice( t("Temporary failure. Please wait and try again.") . EOL);
 283                                 break;
 284
 285
 286                         case 3:
 287                                 notice( t("Introduction failed or was revoked. Cannot complete.") . EOL);
 288                                 break;
 289                 }
 290
 291                 if(($status == 0 || $status == 3) && ($intro_id)) {
 292
 293                         //delete the notification
 294
 295                         $r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 296                                 intval($intro_id),
 297                                 intval($uid)
 298                         );
 299
 300                 }
 301                 if($status != 0)
 302                         return;
 303
 304
 305                 require_once("Photo.php");
 306
 307                 $photo_failure = false;
 308
 309                 $r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
 310                         intval($contact_id));
 311                 if(count($r)) {
 312
 313                         $filename = basename($r[0]['photo']);
 314                         $img_str = fetch_url($r[0]['photo'],true);
 315                         $img = new Photo($img_str);
 316                         if($img) {
 317
 318                                 $img->scaleImageSquare(175);
 319
 320                                 $hash = hash('md5',uniqid(mt_rand(),true));
 321
 322                                 $r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
 323                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
 324                                         intval($local_uid),
 325                                         dbesc($hash),
 326                                         datetime_convert(),
 327                                         datetime_convert(),
 328                                         dbesc(basename($r[0]['photo'])),
 329                                         dbesc( t('Contact Photos') ),
 330                                         intval($img->getHeight()),
 331                                         intval($img->getWidth()),
 332                                         dbesc($img->imageString())
 333                                 );
 334                                 if($r === false)
 335                                         $photo_failure = true;
 336                                 $img->scaleImage(80);
 337                                 $r =  q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
 338                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
 339                                         intval($local_uid),
 340                                         dbesc($hash),
 341                                         datetime_convert(),
 342                                         datetime_convert(),
 343                                         dbesc(basename($r[0]['photo'])),
 344                                         dbesc( t('Contact Photos') ),
 345                                         intval($img->getHeight()),
 346                                         intval($img->getWidth()),
 347                                         dbesc($img->imageString())
 348                                 );
 349                                 if($r === false)
 350                                         $photo_failure = true;
 351
 352                                 $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 353                                 $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 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($r === false)
 372                         notice( t('Unable to set contact photo.') . EOL);
 373
 374                 goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
 375                 return;  //NOTREACHED
 376
 377         }
 378
 379         return;
 380 }