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