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