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                 $duplex     = $_POST['duplex'];
  19                 $version_id = $_POST['dfrn_version'];
  20
  21
  22                 // Find our user's account
  23
  24                 $r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  25                         dbesc($node));
  26
  27                 if(! count($r)) {
  28                         xml_status(3); // failure
  29                         return; // NOTREACHED
  30                 }
  31
  32                 $my_prvkey = $r[0]['prvkey'];
  33                 $local_uid = $r[0]['uid'];
  34
  35                 // verify everything
  36
  37                 $decrypted_source_url = "";
  38                 openssl_private_decrypt($source_url,$decrypted_source_url,$my_prvkey);
  39
  40
  41                 $ret = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
  42                         dbesc($decrypted_source_url),
  43                         intval($local_uid));
  44
  45                 if(! count($ret)) {
  46                         // this is either a bogus confirmation or we deleted the original introduction.
  47                         xml_status(3);
  48                         return; // NOTREACHED
  49                 }
  50
  51                 $relation = $ret[0]['rel'];
  52
  53                 // Decrypt all this stuff we just received
  54
  55                 $foreign_pubkey = $ret[0]['site-pubkey'];
  56                 $dfrn_record    = $ret[0]['id'];
  57
  58                 $decrypted_dfrn_id = "";
  59                 openssl_public_decrypt($dfrn_id,$decrypted_dfrn_id,$foreign_pubkey);
  60
  61                 if(strlen($aes_key)) {
  62                         $decrypted_aes_key = "";
  63                         openssl_private_decrypt($aes_key,$decrypted_aes_key,$my_prvkey);
  64                         $dfrn_pubkey = openssl_decrypt($public_key,'AES-256-CBC',$decrypted_aes_key);
  65                 }
  66                 else {
  67                         $dfrn_pubkey = $public_key;
  68                 }
  69
  70                 $r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
  71                         dbesc($decrypted_dfrn_id),
  72                         intval($local_uid)
  73                 );
  74                 if(count($r)) {
  75                         xml_status(1); // Birthday paradox - duplicate dfrn-id
  76                         return; // NOTREACHED
  77                 }
  78
  79                 $r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
  80                         dbesc($decrypted_dfrn_id),
  81                         dbesc($dfrn_pubkey),
  82                         intval($dfrn_record)
  83                 );
  84                 if($r) {
  85
  86                         // We're good but now we have to scrape the profile photo and send notifications.
  87
  88                         require_once("Photo.php");
  89
  90                         $photo_failure = false;
  91
  92                         $r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
  93                                 intval($dfrn_record));
  94                         if(count($r)) {
  95
  96                                 $filename = basename($r[0]['photo']);
  97                                 $img_str = fetch_url($r[0]['photo'],true);
  98                                 $img = new Photo($img_str);
  99                                 if($img) {
 100
 101                                         $img->scaleImageSquare(175);
 102
 103                                         $hash = hash('md5',uniqid(mt_rand(),true));
 104
 105                                         $r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 4);
 106
 107                                         if($r === false)
 108                                                 $photo_failure = true;
 109
 110                                         $img->scaleImage(80);
 111                                         $r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 5);
 112
 113                                         if($r === false)
 114                                                 $photo_failure = true;
 115
 116                                         $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 117                                         $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 118                                 }
 119                                 else
 120                                         $photo_failure = true;
 121                         }
 122                         else
 123                                 $photo_failure = true;
 124
 125                         if($photo_failure) {
 126                                 $photo = $a->get_baseurl() . '/images/default-profile.jpg';
 127                                 $thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
 128                         }
 129
 130                         $new_relation = DIRECTION_OUT;
 131                         if(($relation == DIRECTION_IN) || ($duplex))
 132                                 $new_relation = DIRECTION_BOTH;
 133
 134                         $r = q("UPDATE `contact` SET
 135                                 `photo` = '%s',
 136                                 `thumb` = '%s',
 137                                 `rel` = %d,
 138                                 `name-date` = '%s',
 139                                 `uri-date` = '%s',
 140                                 `avatar-date` = '%s',
 141                                 `blocked` = 0,
 142                                 `pending` = 0,
 143                                 `duplex` = %d,
 144                                 `network` = 'dfrn' WHERE `id` = %d LIMIT 1
 145                         ",
 146                                 dbesc($photo),
 147                                 dbesc($thumb),
 148                                 intval($new_relation),
 149                                 dbesc(datetime_convert()),
 150                                 dbesc(datetime_convert()),
 151                                 dbesc(datetime_convert()),
 152                                 intval($duplex),
 153                                 intval($dfrn_record)
 154                         );
 155                         if($r === false)
 156                                 notice( t("Unable to set contact photo info.") . EOL);
 157
 158                         // Otherwise everything seems to have worked and we are almost done. Yay!
 159                         // Send an email notification
 160
 161                         $r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 162                                 WHERE `contact`.`id` = %d LIMIT 1",
 163                                 intval($dfrn_record)
 164                         );
 165                         if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {
 166
 167                                 $tpl = file_get_contents('view/intro_complete_eml.tpl');
 168
 169                                 $email_tpl = replace_macros($tpl, array(
 170                                         '$sitename' => $a->config['sitename'],
 171                                         '$siteurl' =>  $a->get_baseurl(),
 172                                         '$username' => $r[0]['username'],
 173                                         '$email' => $r[0]['email'],
 174                                         '$fn' => $r[0]['name'],
 175                                         '$dfrn_url' => $r[0]['url'],
 176                                         '$uid' => $newuid )
 177                                 );
 178
 179                                 $res = mail($r[0]['email'], t("Introduction accepted at ") . $a->config['sitename'],
 180                                         $email_tpl, 'From: ' . t('Administrator') . '@' . $_SERVER[SERVER_NAME] );
 181                                 if(!$res) {
 182                                         notice( t("Email notification failed.") . EOL );
 183                                 }
 184                         }
 185                         xml_status(0); // Success
 186                         return; // NOTREACHED
 187                 }
 188                 else {
 189                         xml_status(2);  // Hopefully temporary problem that can be retried.
 190                 }
 191                 return; // NOTREACHED
 192
 193         ////////////////////// End of this scenario ///////////////////////////////////////////////
 194         }
 195         else {
 196
 197                 // We are processing a local confirmation initiated on this system by our user to an external introduction.
 198
 199                 $uid = get_uid();
 200
 201                 if(! $uid) {
 202                         notice( t("Permission denied.") . EOL );
 203                         return;
 204                 }
 205
 206                 $dfrn_id  = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
 207                 $intro_id = intval($_POST['intro_id']);
 208                 $duplex   = intval($_POST['duplex']);
 209
 210                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
 211                                 dbesc($dfrn_id),
 212                                 intval($uid)
 213                                 );
 214
 215                 if(! count($r)) {
 216                         notice( t('Node does not exist.') . EOL );
 217                         return;
 218                 }
 219
 220                 $contact_id   = $r[0]['id'];
 221                 $relation     = $r[0]['rel'];
 222                 $site_pubkey  = $r[0]['site-pubkey'];
 223                 $dfrn_confirm = $r[0]['confirm'];
 224                 $aes_allow    = $r[0]['aes_allow'];
 225
 226                 $res = openssl_pkey_new(array(
 227                         'digest_alg' => 'whirlpool',
 228                         'private_key_bits' => 4096,
 229                         'encrypt_key' => false )
 230                 );
 231
 232
 233                 $private_key = '';
 234
 235                 openssl_pkey_export($res, $private_key);
 236
 237                 $pubkey = openssl_pkey_get_details($res);
 238                 $public_key = $pubkey["key"];
 239
 240                 $r = q("UPDATE `contact` SET `issued-pubkey` = '%s', `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 241                         dbesc($public_key),
 242                         dbesc($private_key),
 243                         intval($contact_id),
 244                         intval($uid)
 245                 );
 246
 247
 248                 $params = array();
 249
 250                 $src_aes_key = random_string();
 251
 252                 $result = '';
 253                 openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
 254
 255                 $params['dfrn_id'] = $result;
 256                 $params['public_key'] = $public_key;
 257
 258
 259                 openssl_public_encrypt($_SESSION['my_url'], $params['source_url'], $site_pubkey);
 260
 261                 if($aes_allow && function_exists('openssl_encrypt')) {
 262                         openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
 263                         $params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
 264                 }
 265
 266                 $params['dfrn_version'] = '2.0';
 267                 if($duplex == 1)
 268                         $params['duplex'] = 1;
 269
 270                 $res = post_url($dfrn_confirm,$params);
 271
 272 // uncomment the following two lines and comment the following xml/status lines
 273 // to debug the remote confirmation section (when both confirmations
 274 // and responses originate on this system)
 275
 276 // echo $res;
 277 // $status = 0;
 278
 279                 $xml = simplexml_load_string($res);
 280                 $status = (int) $xml->status;
 281                 switch($status) {
 282                         case 0:
 283                                 notice( t("Confirmation completed successfully") . EOL);
 284                                 break;
 285                         case 1:
 286
 287                                 // birthday paradox - generate new dfrn-id and fall through.
 288
 289                                 $new_dfrn_id = random_string();
 290                                 $r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
 291                                         dbesc($new_dfrn_id),
 292                                         intval($contact_id),
 293                                         intval($uid)
 294                                 );
 295
 296                         case 2:
 297                                 notice( t("Temporary failure. Please wait and try again.") . EOL);
 298                                 break;
 299
 300
 301                         case 3:
 302                                 notice( t("Introduction failed or was revoked. Cannot complete.") . EOL);
 303                                 break;
 304                 }
 305
 306                 if(($status == 0 || $status == 3) && ($intro_id)) {
 307
 308                         //delete the notification
 309
 310                         $r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 311                                 intval($intro_id),
 312                                 intval($uid)
 313                         );
 314
 315                 }
 316                 if($status != 0)
 317                         return;
 318
 319
 320                 require_once("Photo.php");
 321
 322                 $photo_failure = false;
 323
 324                 $r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
 325                         intval($contact_id));
 326                 if(count($r)) {
 327
 328                         $filename = basename($r[0]['photo']);
 329                         $img_str = fetch_url($r[0]['photo'],true);
 330                         $img = new Photo($img_str);
 331                         if($img) {
 332
 333                                 $img->scaleImageSquare(175);
 334
 335                                 $hash = hash('md5',uniqid(mt_rand(),true));
 336
 337                                 $r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 4 );
 338
 339                                 if($r === false)
 340                                         $photo_failure = true;
 341                                 $img->scaleImage(80);
 342
 343                                 $r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 5 );
 344
 345                                 if($r === false)
 346                                         $photo_failure = true;
 347
 348                                 $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
 349                                 $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
 350                         }
 351                         else
 352                                 $photo_failure = true;
 353                 }
 354                 else
 355                         $photo_failure = true;
 356
 357                 if($photo_failure) {
 358                         $photo = $a->get_baseurl() . '/images/default-profile.jpg';
 359                         $thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
 360                 }
 361
 362                 $new_relation = DIRECTION_IN;
 363                 if(($relation == DIRECTION_OUT) || ($duplex))
 364                         $new_relation = DIRECTION_BOTH;
 365
 366                 $r = q("UPDATE `contact` SET `photo` = '%s',
 367                         `thumb` = '%s',
 368                         `rel` = %d,
 369                         `name-date` = '%s',
 370                         `uri-date` = '%s',
 371                         `avatar-date` = '%s',
 372                         `blocked` = 0,
 373                         `pending` = 0,
 374                         `network` = 'dfrn' WHERE `id` = %d LIMIT 1
 375                 ",
 376                         dbesc($photo),
 377                         dbesc($thumb),
 378                         intval($new_relation),
 379                         dbesc(datetime_convert()),
 380                         dbesc(datetime_convert()),
 381                         dbesc(datetime_convert()),
 382                         intval($contact_id)
 383                 );
 384                 if($r === false)
 385                         notice( t('Unable to set contact photo.') . EOL);
 386
 387                 goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
 388                 return;  //NOTREACHED
 389         }
 390         return;
 391 }