mod/dfrn_request.php

   1 <?php
   2
   3 if(! function_exists('dfrn_request_init')) {
   4 function dfrn_request_init(&$a) {
   5
   6         if($a->argc > 1)
   7                 $which = $a->argv[1];
   8
   9         profile_load($a,$which);
  10
  11         return;
  12 }}
  13
  14
  15 if(! function_exists('dfrn_request_post')) {
  16 function dfrn_request_post(&$a) {
  17
  18         if(($a->argc != 2) || (! count($a->profile)))
  19                 return;
  20
  21
  22         if($_POST['cancel']) {
  23                 goaway($a->get_baseurl());
  24         }
  25
  26
  27         // We've introduced ourself to another cell, then have been returned to our own cell
  28         // to confirm the request, and then we've clicked submit (perhaps after logging in).
  29         // That brings us here:
  30
  31         if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
  32
  33                 // Ensure this is a valid request
  34
  35                 if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
  36
  37
  38                         $dfrn_url = notags(trim($_POST['dfrn_url']));
  39                         $aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
  40                         $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
  41
  42                         $contact_record = null;
  43
  44                         if(x($dfrn_url)) {
  45
  46                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `self` = 0 LIMIT 1",
  47                                         intval(local_user()),
  48                                         dbesc($dfrn_url)
  49                                 );
  50
  51                                 if(count($r)) {
  52                                         if(strlen($r[0]['dfrn-id'])) {
  53                                                 notice( t("This introduction has already been accepted.") . EOL );
  54                                                 return;
  55                                         }
  56                                         else
  57                                                 $contact_record = $r[0];
  58                                 }
  59
  60                                 if(is_array($contact_record)) {
  61                                         $r = q("UPDATE `contact` SET `ret-aes` = %d WHERE `id` = %d LIMIT 1",
  62                                                 intval($aes_allow),
  63                                                 intval($contact_record['id'])
  64                                         );
  65                                 }
  66                                 else {
  67
  68                                         require_once('Scrape.php');
  69
  70
  71                                         $parms = scrape_dfrn($dfrn_url);
  72
  73                                         if(! count($parms)) {
  74                                                 notice( t('Profile location is not valid or does not contain profile information.') . EOL );
  75                                                 return;
  76                                         }
  77                                         else {
  78                                                 if(! x($parms,'fn'))
  79                                                         notice( t('Warning: profile location has no identifiable owner name.') . EOL );
  80                                                 if(! x($parms,'photo'))
  81                                                         notice( t('Warning: profile location has no profile photo.') . EOL );
  82                                                 $invalid = validate_dfrn($parms);
  83                                                 if($invalid) {
  84                                                         notice( $invalid . t(' required parameter')
  85                                                                 . (($invalid == 1) ? t(" was ") : t("s were ") )
  86                                                                 . t("not found at the given location.") . EOL ) ;
  87                                                         return;
  88                                                 }
  89                                         }
  90
  91
  92
  93                                         $dfrn_request = $parms['dfrn-request'];
  94
  95                                         dbesc_array($parms);
  96
  97
  98                                         $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `nick`, `photo`, `site-pubkey`,
  99                                                 `request`, `confirm`, `notify`, `poll`, `aes_allow`)
 100                                                 VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 101                                                 intval(local_user()),
 102                                                 datetime_convert(),
 103                                                 dbesc($dfrn_url),
 104                                                 $parms['fn'],
 105                                                 $parms['nick'],
 106                                                 $parms['photo'],
 107                                                 $parms['key'],
 108                                                 $parms['dfrn-request'],
 109                                                 $parms['dfrn-confirm'],
 110                                                 $parms['dfrn-notify'],
 111                                                 $parms['dfrn-poll'],
 112                                                 intval($aes_allow)
 113                                         );
 114                                 }
 115
 116                                 if($r) {
 117                                         notice( t("Introduction complete.") . EOL);
 118                                 }
 119
 120                                 // Allow the blocked remote notification to complete
 121
 122                                 if(is_array($contact_record))
 123                                         $dfrn_request = $contact_record['request'];
 124
 125                                 if(strlen($dfrn_request) && strlen($confirm_key))
 126                                         $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
 127                                         // ignore reply
 128                                 goaway($dfrn_url);
 129                                 return; // NOTREACHED
 130
 131                         }
 132
 133                 }
 134
 135                 // invalid/bogus request
 136
 137                 notice( t('Unrecoverable protocol error.') . EOL );
 138                 goaway($a->get_baseurl());
 139                 return; // NOTREACHED
 140         }
 141
 142         // Otherwise:
 143
 144         // We are the requestee. A person from a remote cell has made an introduction
 145         // on our profile web page and clicked submit. We will use their DFRN-URL to
 146         // figure out how to contact their cell.
 147
 148         // Scrape the originating DFRN-URL for everything we need. Create a contact record
 149         // and an introduction to show our user next time he/she logs in.
 150         // Finally redirect back to the requestor so that their site can record the request.
 151         // If our user (the requestee) later confirms this request, a record of it will need
 152         // to exist on the requestor's cell in order for the confirmation process to complete..
 153
 154         // It's possible that neither the requestor or the requestee are logged in at the moment,
 155         // and the requestor does not yet have any credentials to the requestee profile.
 156
 157         // Who is the requestee? We've already loaded their profile which means their nickname should be
 158         // in $a->argv[1] and we should have their complete info in $a->profile.
 159
 160         if(! (is_array($a->profile) && count($a->profile))) {
 161                 notice( t('Profile unavailable.') . EOL);
 162                 return;
 163         }
 164
 165         $nickname = $a->profile['nickname'];
 166         $notify_flags = $a->profile['notify-flags'];
 167         $uid = $a->profile['uid'];
 168
 169         $contact_record = null;
 170         $failed = false;
 171         $parms = null;
 172
 173
 174         if( x($_POST,'dfrn_url')) {
 175
 176                 $url = trim($_POST['dfrn_url']);
 177                 if(! strlen($url)) {
 178                         notice( t("Invalid locator") . EOL );
 179                         return;
 180                 }
 181
 182                 // Canonicalise email-style profile locator
 183
 184                 $url = webfinger_dfrn($url);
 185
 186                 if(substr($url,0,5) === 'stat:') {
 187                         $network = 'stat';
 188                         $url = substr($url,5);
 189                 }
 190                 else {
 191                         $network = 'dfrn';
 192                 }
 193
 194                 logger('dfrn_request: url: ' . $url);
 195
 196                 if(! strlen($url)) {
 197                         notice( t("Unable to resolve your name at the provided location.") . EOL);
 198                         return;
 199                 }
 200
 201
 202                 if($network === 'dfrn') {
 203                         $ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `self` = 0 LIMIT 1",
 204                                 intval($uid),
 205                                 dbesc($url)
 206                         );
 207
 208                         if(count($ret)) {
 209                                 if(strlen($ret[0]['issued-id'])) {
 210                                         notice( t('You have already introduced yourself here.') . EOL );
 211                                         return;
 212                                 }
 213                                 elseif($ret[0]['rel'] == REL_BUD) {
 214                                         notice( t('Apparently you are already friends with .') . $a->profile['name'] . EOL);
 215                                         return;
 216                                 }
 217                                 else {
 218                                         $contact_record = $ret[0];
 219                                         $parms = array('dfrn-request' => $ret[0]['request']);
 220                                 }
 221                         }
 222
 223                         $issued_id = random_string();
 224
 225                         if(is_array($contact_record)) {
 226                                 // There is a contact record but no issued-id, so this
 227                                 // is a reciprocal introduction from a known contact
 228                                 $r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d LIMIT 1",
 229                                         dbesc($issued_id),
 230                                         intval($contact_record['id'])
 231                                 );
 232                         }
 233                         else {
 234                                 if(! validate_url($url)) {
 235                                         notice( t('Invalid profile URL.') . EOL);
 236                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 237                                         return; // NOTREACHED
 238                                 }
 239
 240                                 if(! allowed_url($url)) {
 241                                         notice( t('Disallowed profile URL.') . EOL);
 242                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 243                                         return; // NOTREACHED
 244                                 }
 245
 246
 247                                 require_once('Scrape.php');
 248
 249                                 $parms = scrape_dfrn($url);
 250
 251                                 if(! count($parms)) {
 252                                         notice( t('Profile location is not valid or does not contain profile information.') . EOL );
 253                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 254                                 }
 255                                 else {
 256                                         if(! x($parms,'fn'))
 257                                                 notice( t('Warning: profile location has no identifiable owner name.') . EOL );
 258                                         if(! x($parms,'photo'))
 259                                                 notice( t('Warning: profile location has no profile photo.') . EOL );
 260                                         $invalid = validate_dfrn($parms);
 261                                         if($invalid) {
 262                                                 notice( $invalid . t(' required parameter')
 263                                                         . (($invalid == 1) ? t(" was ") : t("s were ") )
 264                                                         . t("not found at the given location.") . EOL ) ;
 265
 266                                                 return;
 267                                         }
 268                                 }
 269
 270
 271                                 $parms['url'] = $url;
 272                                 $parms['issued-id'] = $issued_id;
 273
 274
 275                                 dbesc_array($parms);
 276                                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `issued-id`, `photo`, `site-pubkey`,
 277                                         `request`, `confirm`, `notify`, `poll` )
 278                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )",
 279                                         intval($uid),
 280                                         datetime_convert(),
 281                                         $parms['url'],
 282                                         $parms['fn'],
 283                                         $parms['nick'],
 284                                         $parms['issued-id'],
 285                                         $parms['photo'],
 286                                         $parms['key'],
 287                                         $parms['dfrn-request'],
 288                                         $parms['dfrn-confirm'],
 289                                         $parms['dfrn-notify'],
 290                                         $parms['dfrn-poll']
 291                                 );
 292
 293                                 // find the contact record we just created
 294                                 if($r) {
 295                                         $r = q("SELECT `id` FROM `contact`
 296                                                 WHERE `uid` = %d AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
 297                                                 intval($uid),
 298                                                 $parms['url'],
 299                                                 $parms['issued-id']
 300                                         );
 301                                         if(count($r))
 302                                                 $contact_record = $r[0];
 303                                 }
 304
 305                         }
 306                         if($r === false) {
 307                                 notice( t('Failed to update contact record.') . EOL );
 308                                 return;
 309                         }
 310
 311                         $hash = random_string() . (string) time();   // Generate a confirm_key
 312
 313                         if(is_array($contact_record)) {
 314                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
 315                                         VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
 316                                         intval($uid),
 317                                         intval($contact_record['id']),
 318                                         ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
 319                                         dbesc(notags(trim($_POST['dfrn-request-message']))),
 320                                         dbesc($hash),
 321                                         dbesc(datetime_convert())
 322                                 );
 323                         }
 324
 325                         // This notice will only be seen by the requestor if the requestor and requestee are on the same server.
 326
 327                         if(! $failed)
 328                                 notice( t('Your introduction has been sent.') . EOL );
 329
 330                         // "Homecoming" - send the requestor back to their site to record the introduction.
 331
 332                         $dfrn_url = bin2hex($a->get_baseurl() . '/profile/' . $nickname);
 333                         $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
 334
 335                         goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url"
 336                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 337                                 . '&confirm_key='  . $hash
 338                                 . (($aes_allow) ? "&aes_allow=1" : "")
 339                         );
 340                         // NOTREACHED
 341                         // END $network === 'dfrn'
 342                 }
 343                 elseif($network === 'stat') {
 344
 345                         /**
 346                         *
 347                         * OStatus network
 348                         * Check contact existence
 349                         * Try and scrape together enough information to create a contact record, with us as REL_VIP
 350                         * Substitute our user's feed URL into $url template
 351                         * Send the subscriber home to subscribe
 352                         *
 353                         **/
 354
 355                         $url = str_replace('{uri}', $a->get_baseurl() . '/dfrn_poll/' . $nickname, $url);
 356                         goaway($url);
 357                         // NOTREACHED
 358                         // END $network === 'stat'
 359                 }
 360
 361         }       return;
 362 }}
 363
 364
 365
 366
 367 if(! function_exists('dfrn_request_content')) {
 368 function dfrn_request_content(&$a) {
 369
 370
 371
 372         if(($a->argc != 2) || (! count($a->profile)))
 373                 return "";
 374
 375         $a->page['template'] = 'profile';
 376
 377         // "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
 378         // to send us to the post section to record the introduction.
 379
 380         if(x($_GET,'dfrn_url')) {
 381
 382                 if(! local_user()) {
 383                         notice( t("Please login to confirm introduction.") . EOL );
 384                         return login();
 385                 }
 386
 387                 // Edge case, but can easily happen in the wild. This person is authenticated,
 388                 // but not as the person who needs to deal with this request.
 389
 390                 if ($a->user['nickname'] != $a->argv[1]) {
 391                         notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
 392                         return login();
 393                 }
 394
 395                 $dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
 396                 $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
 397                 $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
 398                 $o .= load_view_file("view/dfrn_req_confirm.tpl");
 399                 $o  = replace_macros($o,array(
 400                         '$dfrn_url' => $dfrn_url,
 401                         '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
 402                         '$confirm_key' => $confirm_key,
 403                         '$username' => $a->user['username'],
 404                         '$uid' => $_SESSION['uid'],
 405                         '$nickname' => $a->user['nickname'],
 406                         'dfrn_rawurl' => $_GET['dfrn_url']
 407                         ));
 408                 return $o;
 409
 410         }
 411         elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
 412
 413                 // we are the requestee and it is now safe to send our user their introduction,
 414                 // We could just unblock it, but first we have to jump through a few hoops to
 415                 // send an email, or even to find out if we need to send an email.
 416
 417                 $intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
 418                         dbesc($_GET['confirm_key'])
 419                 );
 420
 421                 if(count($intro)) {
 422
 423                         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 424                                 WHERE `contact`.`id` = %d LIMIT 1",
 425                                 intval($intro[0]['contact-id'])
 426                         );
 427
 428                         $auto_confirm = false;
 429
 430                         if(count($r)) {
 431                                 if($r[0]['page-flags'] != PAGE_NORMAL)
 432                                         $auto_confirm = true;
 433                                 if(($r[0]['notify-flags'] & NOTIFY_INTRO) && (! $auto_confirm)) {
 434                                         $email_tpl = load_view_file('view/request_notify_eml.tpl');
 435                                         $email = replace_macros($email_tpl, array(
 436                                                 '$requestor' => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
 437                                                 '$url' => stripslashes($r[0]['url']),
 438                                                 '$myname' => $r[0]['username'],
 439                                                 '$siteurl' => $a->get_baseurl(),
 440                                                 '$sitename' => $a->config['sitename']
 441                                         ));
 442                                         $res = mail($r[0]['email'],
 443                                                 t("Introduction received at ") . $a->config['sitename'],
 444                                                 $email,
 445                                                 'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
 446                                         // This is a redundant notification - no point throwing errors if it fails.
 447                                 }
 448                                 if($auto_confirm) {
 449                                         require_once('mod/dfrn_confirm.php');
 450                                         $handsfree = array(
 451                                                 'uid' => $r[0]['uid'],
 452                                                 'node' => $r[0]['nickname'],
 453                                                 'dfrn_id' => $r[0]['issued-id'],
 454                                                 'intro_id' => $intro[0]['id'],
 455                                                 'duplex' => (($r[0]['page-flags'] == PAGE_FREELOVE) ? 1 : 0)
 456                                         );
 457                                         dfrn_confirm_post($a,$handsfree);
 458                                 }
 459
 460                         }
 461
 462                         if(! $auto_confirm) {
 463
 464                                 // If we are auto_confirming, this record will have already been nuked
 465                                 // in dfrn_confirm_post()
 466
 467                                 $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s' LIMIT 1",
 468                                         dbesc($_GET['confirm_key'])
 469                                 );
 470                         }
 471                 }
 472                 killme();
 473                 return; // NOTREACHED
 474         }
 475         else {
 476                 $myaddr = ((x($_GET,'address')) ? urldecode($_GET['address']) : '');
 477                 // Normal web request. Display our user's introduction form.
 478                 if($a->profile['page-flags'] == PAGE_NORMAL)
 479                         $tpl = load_view_file('view/dfrn_request.tpl');
 480                 else
 481                         $tpl = load_view_file('view/auto_request.tpl');
 482                 $o .= replace_macros($tpl,array(
 483                         '$nickname' => $a->argv[1],
 484                         '$name' => $a->profile['name'],
 485                         '$myaddr' => $myaddr
 486                 ));
 487                 return $o;
 488         }
 489
 490         return; // Somebody is fishing.
 491 }}