boot.php

   1 <?php
   2
   3 require_once('include/config.php');
   4 require_once('include/network.php');
   5 require_once('include/plugin.php');
   6 require_once('include/text.php');
   7 require_once('include/datetime.php');
   8 require_once('include/pgettext.php');
   9 require_once('include/nav.php');
  10 require_once('include/cache.php');
  11 require_once('library/Mobile_Detect/Mobile_Detect.php');
  12 require_once('include/features.php');
  13 require_once('include/identity.php');
  14
  15 require_once('update.php');
  16 require_once('include/dbstructure.php');
  17
  18 define ( 'FRIENDICA_PLATFORM',     'Friendica');
  19 define ( 'FRIENDICA_CODENAME',     'Lily of the valley');
  20 define ( 'FRIENDICA_VERSION',      '3.4.0' );
  21 define ( 'DFRN_PROTOCOL_VERSION',  '2.23'    );
  22 define ( 'DB_UPDATE_VERSION',      1185      );
  23 define ( 'EOL',                    "<br />\r\n"     );
  24 define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z' );
  25
  26
  27 /**
  28  *
  29  * Image storage quality. Lower numbers save space at cost of image detail.
  30  * For ease of upgrade, please do not change here. Change jpeg quality with
  31  * $a->config['system']['jpeg_quality'] = n;
  32  * in .htconfig.php, where n is netween 1 and 100, and with very poor results
  33  * below about 50
  34  *
  35  */
  36
  37 define ( 'JPEG_QUALITY',            100  );
  38 /**
  39  * $a->config['system']['png_quality'] from 0 (uncompressed) to 9
  40  */
  41 define ( 'PNG_QUALITY',             8  );
  42
  43 /**
  44  *
  45  * An alternate way of limiting picture upload sizes. Specify the maximum pixel
  46  * length that pictures are allowed to be (for non-square pictures, it will apply
  47  * to the longest side). Pictures longer than this length will be resized to be
  48  * this length (on the longest side, the other side will be scaled appropriately).
  49  * Modify this value using
  50  *
  51  *    $a->config['system']['max_image_length'] = n;
  52  *
  53  * in .htconfig.php
  54  *
  55  * If you don't want to set a maximum length, set to -1. The default value is
  56  * defined by 'MAX_IMAGE_LENGTH' below.
  57  *
  58  */
  59 define ( 'MAX_IMAGE_LENGTH',        -1  );
  60
  61
  62 /**
  63  * Not yet used
  64  */
  65
  66 define ( 'DEFAULT_DB_ENGINE',  'MyISAM'  );
  67
  68 /**
  69  * SSL redirection policies
  70  */
  71
  72 define ( 'SSL_POLICY_NONE',         0 );
  73 define ( 'SSL_POLICY_FULL',         1 );
  74 define ( 'SSL_POLICY_SELFSIGN',     2 );
  75
  76
  77 /**
  78  * log levels
  79  */
  80
  81 define ( 'LOGGER_NORMAL',          0 );
  82 define ( 'LOGGER_TRACE',           1 );
  83 define ( 'LOGGER_DEBUG',           2 );
  84 define ( 'LOGGER_DATA',            3 );
  85 define ( 'LOGGER_ALL',             4 );
  86
  87 /**
  88  * registration policies
  89  */
  90
  91 define ( 'REGISTER_CLOSED',        0 );
  92 define ( 'REGISTER_APPROVE',       1 );
  93 define ( 'REGISTER_OPEN',          2 );
  94
  95 /**
  96  * relationship types
  97  */
  98
  99 define ( 'CONTACT_IS_FOLLOWER', 1);
 100 define ( 'CONTACT_IS_SHARING',  2);
 101 define ( 'CONTACT_IS_FRIEND',   3);
 102
 103
 104 /**
 105  * DB update return values
 106  */
 107
 108 define ( 'UPDATE_SUCCESS', 0);
 109 define ( 'UPDATE_FAILED',  1);
 110
 111
 112 /**
 113  *
 114  * page/profile types
 115  *
 116  * PAGE_NORMAL is a typical personal profile account
 117  * PAGE_SOAPBOX automatically approves all friend requests as CONTACT_IS_SHARING, (readonly)
 118  * PAGE_COMMUNITY automatically approves all friend requests as CONTACT_IS_SHARING, but with
 119  *      write access to wall and comments (no email and not included in page owner's ACL lists)
 120  * PAGE_FREELOVE automatically approves all friend requests as full friends (CONTACT_IS_FRIEND).
 121  *
 122  */
 123
 124 define ( 'PAGE_NORMAL',            0 );
 125 define ( 'PAGE_SOAPBOX',           1 );
 126 define ( 'PAGE_COMMUNITY',         2 );
 127 define ( 'PAGE_FREELOVE',          3 );
 128 define ( 'PAGE_BLOG',              4 );
 129 define ( 'PAGE_PRVGROUP',          5 );
 130
 131 // Type of the community page
 132 define ( 'CP_NO_COMMUNITY_PAGE',   -1 );
 133 define ( 'CP_USERS_ON_SERVER',     0 );
 134 define ( 'CP_GLOBAL_COMMUNITY',    1 );
 135
 136 /**
 137  * Network and protocol family types
 138  */
 139
 140 define ( 'NETWORK_DFRN',             'dfrn');    // Friendica, Mistpark, other DFRN implementations
 141 define ( 'NETWORK_ZOT',              'zot!');    // Zot!
 142 define ( 'NETWORK_OSTATUS',          'stat');    // status.net, identi.ca, GNU-social, other OStatus implementations
 143 define ( 'NETWORK_FEED',             'feed');    // RSS/Atom feeds with no known "post/notify" protocol
 144 define ( 'NETWORK_DIASPORA',         'dspr');    // Diaspora
 145 define ( 'NETWORK_MAIL',             'mail');    // IMAP/POP
 146 define ( 'NETWORK_MAIL2',            'mai2');    // extended IMAP/POP
 147 define ( 'NETWORK_FACEBOOK',         'face');    // Facebook API
 148 define ( 'NETWORK_LINKEDIN',         'lnkd');    // LinkedIn
 149 define ( 'NETWORK_XMPP',             'xmpp');    // XMPP
 150 define ( 'NETWORK_MYSPACE',          'mysp');    // MySpace
 151 define ( 'NETWORK_GPLUS',            'goog');    // Google+
 152 define ( 'NETWORK_PUMPIO',           'pump');    // pump.io
 153 define ( 'NETWORK_TWITTER',          'twit');    // Twitter
 154 define ( 'NETWORK_DIASPORA2',        'dspc');    // Diaspora connector
 155 define ( 'NETWORK_STATUSNET',        'stac');    // Statusnet connector
 156 define ( 'NETWORK_APPNET',           'apdn');    // app.net
 157
 158 define ( 'NETWORK_PHANTOM',          'unkn');    // Place holder
 159
 160 /**
 161  * These numbers are used in stored permissions
 162  * and existing allocations MUST NEVER BE CHANGED
 163  * OR RE-ASSIGNED! You may only add to them.
 164  */
 165
 166 $netgroup_ids = array(
 167         NETWORK_DFRN     => (-1),
 168         NETWORK_ZOT      => (-2),
 169         NETWORK_OSTATUS  => (-3),
 170         NETWORK_FEED     => (-4),
 171         NETWORK_DIASPORA => (-5),
 172         NETWORK_MAIL     => (-6),
 173         NETWORK_MAIL2    => (-7),
 174         NETWORK_FACEBOOK => (-8),
 175         NETWORK_LINKEDIN => (-9),
 176         NETWORK_XMPP     => (-10),
 177         NETWORK_MYSPACE  => (-11),
 178         NETWORK_GPLUS    => (-12),
 179         NETWORK_PUMPIO   => (-13),
 180         NETWORK_TWITTER  => (-14),
 181         NETWORK_DIASPORA2 => (-15),
 182         NETWORK_STATUSNET => (-16),
 183         NETWORK_APPNET => (-17),
 184
 185         NETWORK_PHANTOM  => (-127),
 186 );
 187
 188
 189 /**
 190  * Maximum number of "people who like (or don't like) this"  that we will list by name
 191  */
 192
 193 define ( 'MAX_LIKERS',    75);
 194
 195 /**
 196  * Communication timeout
 197  */
 198
 199 define ( 'ZCURL_TIMEOUT' , (-1));
 200
 201
 202 /**
 203  * email notification options
 204  */
 205
 206 define ( 'NOTIFY_INTRO',    0x0001 );
 207 define ( 'NOTIFY_CONFIRM',  0x0002 );
 208 define ( 'NOTIFY_WALL',     0x0004 );
 209 define ( 'NOTIFY_COMMENT',  0x0008 );
 210 define ( 'NOTIFY_MAIL',     0x0010 );
 211 define ( 'NOTIFY_SUGGEST',  0x0020 );
 212 define ( 'NOTIFY_PROFILE',  0x0040 );
 213 define ( 'NOTIFY_TAGSELF',  0x0080 );
 214 define ( 'NOTIFY_TAGSHARE', 0x0100 );
 215 define ( 'NOTIFY_POKE',     0x0200 );
 216 define ( 'NOTIFY_SHARE',    0x0400 );
 217
 218 define ( 'NOTIFY_SYSTEM',   0x8000 );
 219
 220
 221 /**
 222  * Tag/term types
 223  */
 224
 225 define ( 'TERM_UNKNOWN',   0 );
 226 define ( 'TERM_HASHTAG',   1 );
 227 define ( 'TERM_MENTION',   2 );
 228 define ( 'TERM_CATEGORY',  3 );
 229 define ( 'TERM_PCATEGORY', 4 );
 230 define ( 'TERM_FILE',      5 );
 231 define ( 'TERM_SAVEDSEARCH', 6 );
 232 define ( 'TERM_CONVERSATION', 7 );
 233
 234 define ( 'TERM_OBJ_POST',  1 );
 235 define ( 'TERM_OBJ_PHOTO', 2 );
 236
 237
 238
 239 /**
 240  * various namespaces we may need to parse
 241  */
 242
 243 define ( 'NAMESPACE_ZOT',             'http://purl.org/zot' );
 244 define ( 'NAMESPACE_DFRN' ,           'http://purl.org/macgirvin/dfrn/1.0' );
 245 define ( 'NAMESPACE_THREAD' ,         'http://purl.org/syndication/thread/1.0' );
 246 define ( 'NAMESPACE_TOMB' ,           'http://purl.org/atompub/tombstones/1.0' );
 247 define ( 'NAMESPACE_ACTIVITY',        'http://activitystrea.ms/spec/1.0/' );
 248 define ( 'NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/' );
 249 define ( 'NAMESPACE_MEDIA',           'http://purl.org/syndication/atommedia' );
 250 define ( 'NAMESPACE_SALMON_ME',       'http://salmon-protocol.org/ns/magic-env' );
 251 define ( 'NAMESPACE_OSTATUSSUB',      'http://ostatus.org/schema/1.0/subscribe' );
 252 define ( 'NAMESPACE_GEORSS',          'http://www.georss.org/georss' );
 253 define ( 'NAMESPACE_POCO',            'http://portablecontacts.net/spec/1.0' );
 254 define ( 'NAMESPACE_FEED',            'http://schemas.google.com/g/2010#updates-from' );
 255 define ( 'NAMESPACE_OSTATUS',         'http://ostatus.org/schema/1.0' );
 256 define ( 'NAMESPACE_STATUSNET',       'http://status.net/schema/api/1/' );
 257 define ( 'NAMESPACE_ATOM1',           'http://www.w3.org/2005/Atom' );
 258 /**
 259  * activity stream defines
 260  */
 261
 262 define ( 'ACTIVITY_LIKE',        NAMESPACE_ACTIVITY_SCHEMA . 'like' );
 263 define ( 'ACTIVITY_DISLIKE',     NAMESPACE_DFRN            . '/dislike' );
 264 define ( 'ACTIVITY_OBJ_HEART',   NAMESPACE_DFRN            . '/heart' );
 265
 266 define ( 'ACTIVITY_FRIEND',      NAMESPACE_ACTIVITY_SCHEMA . 'make-friend' );
 267 define ( 'ACTIVITY_REQ_FRIEND',  NAMESPACE_ACTIVITY_SCHEMA . 'request-friend' );
 268 define ( 'ACTIVITY_UNFRIEND',    NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend' );
 269 define ( 'ACTIVITY_FOLLOW',      NAMESPACE_ACTIVITY_SCHEMA . 'follow' );
 270 define ( 'ACTIVITY_UNFOLLOW',    NAMESPACE_ACTIVITY_SCHEMA . 'stop-following' );
 271 define ( 'ACTIVITY_JOIN',        NAMESPACE_ACTIVITY_SCHEMA . 'join' );
 272
 273 define ( 'ACTIVITY_POST',        NAMESPACE_ACTIVITY_SCHEMA . 'post' );
 274 define ( 'ACTIVITY_UPDATE',      NAMESPACE_ACTIVITY_SCHEMA . 'update' );
 275 define ( 'ACTIVITY_TAG',         NAMESPACE_ACTIVITY_SCHEMA . 'tag' );
 276 define ( 'ACTIVITY_FAVORITE',    NAMESPACE_ACTIVITY_SCHEMA . 'favorite' );
 277
 278 define ( 'ACTIVITY_POKE',        NAMESPACE_ZOT . '/activity/poke' );
 279 define ( 'ACTIVITY_MOOD',        NAMESPACE_ZOT . '/activity/mood' );
 280
 281 define ( 'ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark' );
 282 define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
 283 define ( 'ACTIVITY_OBJ_NOTE',    NAMESPACE_ACTIVITY_SCHEMA . 'note' );
 284 define ( 'ACTIVITY_OBJ_PERSON',  NAMESPACE_ACTIVITY_SCHEMA . 'person' );
 285 define ( 'ACTIVITY_OBJ_IMAGE',   NAMESPACE_ACTIVITY_SCHEMA . 'image' );
 286 define ( 'ACTIVITY_OBJ_PHOTO',   NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
 287 define ( 'ACTIVITY_OBJ_VIDEO',   NAMESPACE_ACTIVITY_SCHEMA . 'video' );
 288 define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
 289 define ( 'ACTIVITY_OBJ_ALBUM',   NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
 290 define ( 'ACTIVITY_OBJ_EVENT',   NAMESPACE_ACTIVITY_SCHEMA . 'event' );
 291 define ( 'ACTIVITY_OBJ_GROUP',   NAMESPACE_ACTIVITY_SCHEMA . 'group' );
 292 define ( 'ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN            . '/tagterm' );
 293 define ( 'ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN            . '/profile' );
 294 define ( 'ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question' );
 295
 296 /**
 297  * item weight for query ordering
 298  */
 299
 300 define ( 'GRAVITY_PARENT',       0);
 301 define ( 'GRAVITY_LIKE',         3);
 302 define ( 'GRAVITY_COMMENT',      6);
 303
 304 /**
 305  *
 306  * Reverse the effect of magic_quotes_gpc if it is enabled.
 307  * Please disable magic_quotes_gpc so we don't have to do this.
 308  * See http://php.net/manual/en/security.magicquotes.disabling.php
 309  *
 310  */
 311
 312 function startup() {
 313
 314         error_reporting(E_ERROR | E_WARNING | E_PARSE);
 315
 316         set_time_limit(0);
 317
 318         // This has to be quite large to deal with embedded private photos
 319         ini_set('pcre.backtrack_limit', 500000);
 320
 321
 322         if (get_magic_quotes_gpc()) {
 323                 $process = array(&$_GET, &$_POST, &$_COOKIE, &$_REQUEST);
 324                 while (list($key, $val) = each($process)) {
 325                         foreach ($val as $k => $v) {
 326                                 unset($process[$key][$k]);
 327                                 if (is_array($v)) {
 328                                         $process[$key][stripslashes($k)] = $v;
 329                                         $process[] = &$process[$key][stripslashes($k)];
 330                                 } else {
 331                                         $process[$key][stripslashes($k)] = stripslashes($v);
 332                                 }
 333                         }
 334                 }
 335                 unset($process);
 336         }
 337
 338 }
 339
 340 /**
 341  *
 342  * class: App
 343  *
 344  * Our main application structure for the life of this page
 345  * Primarily deals with the URL that got us here
 346  * and tries to make some sense of it, and
 347  * stores our page contents and config storage
 348  * and anything else that might need to be passed around
 349  * before we spit the page out.
 350  *
 351  */
 352
 353 if(! class_exists('App')) {
 354         class App {
 355
 356                 public  $module_loaded = false;
 357                 public  $query_string;
 358                 public  $config;
 359                 public  $page;
 360                 public  $profile;
 361                 public  $profile_uid;
 362                 public  $user;
 363                 public  $cid;
 364                 public  $contact;
 365                 public  $contacts;
 366                 public  $page_contact;
 367                 public  $content;
 368                 public  $data = array();
 369                 public  $error = false;
 370                 public  $cmd;
 371                 public  $argv;
 372                 public  $argc;
 373                 public  $module;
 374                 public  $pager;
 375                 public  $strings;
 376                 public  $path;
 377                 public  $hooks;
 378                 public  $timezone;
 379                 public  $interactive = true;
 380                 public  $plugins;
 381                 public  $apps = array();
 382                 public  $identities;
 383                 public  $is_mobile;
 384                 public  $is_tablet;
 385                 public  $is_friendica_app;
 386                 public  $performance = array();
 387
 388                 public $nav_sel;
 389
 390                 public $category;
 391
 392
 393                 // Allow themes to control internal parameters
 394                 // by changing App values in theme.php
 395
 396                 public  $sourcename = '';
 397                 public  $videowidth = 425;
 398                 public  $videoheight = 350;
 399                 public  $force_max_items = 0;
 400                 public  $theme_thread_allow = true;
 401
 402                 // An array for all theme-controllable parameters
 403                 // Mostly unimplemented yet. Only options 'stylesheet' and
 404                 // beyond are used.
 405
 406                 public  $theme = array(
 407                         'sourcename' => '',
 408                         'videowidth' => 425,
 409                         'videoheight' => 350,
 410                         'force_max_items' => 0,
 411                         'thread_allow' => true,
 412                         'stylesheet' => '',
 413                         'template_engine' => 'smarty3',
 414                 );
 415
 416                 // array of registered template engines ('name'=>'class name')
 417                 public $template_engines = array();
 418                 // array of instanced template engines ('name'=>'instance')
 419                 public $template_engine_instance = array();
 420
 421                 private $ldelim = array(
 422                         'internal' => '',
 423                         'smarty3' => '{{'
 424                 );
 425                 private $rdelim = array(
 426                         'internal' => '',
 427                         'smarty3' => '}}'
 428                 );
 429
 430                 private $scheme;
 431                 private $hostname;
 432                 private $baseurl;
 433                 private $db;
 434
 435                 private $curl_code;
 436                 private $curl_content_type;
 437                 private $curl_headers;
 438
 439                 private $cached_profile_image;
 440                 private $cached_profile_picdate;
 441
 442                 function __construct() {
 443
 444                         global $default_timezone;
 445
 446                         $hostname = "";
 447
 448                         if (file_exists(".htpreconfig.php"))
 449                                 @include(".htpreconfig.php");
 450
 451                         $this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
 452
 453                         date_default_timezone_set($this->timezone);
 454
 455                         $this->performance["start"] = microtime(true);
 456                         $this->performance["database"] = 0;
 457                         $this->performance["network"] = 0;
 458                         $this->performance["file"] = 0;
 459                         $this->performance["rendering"] = 0;
 460                         $this->performance["parser"] = 0;
 461                         $this->performance["marktime"] = 0;
 462                         $this->performance["markstart"] = microtime(true);
 463
 464                         $this->config = array();
 465                         $this->page = array();
 466                         $this->pager= array();
 467
 468                         $this->query_string = '';
 469
 470                         startup();
 471
 472                         set_include_path(
 473                                         'include' . PATH_SEPARATOR
 474                                         . 'library' . PATH_SEPARATOR
 475                                         . 'library/phpsec' . PATH_SEPARATOR
 476                                         . 'library/langdet' . PATH_SEPARATOR
 477                                         . '.' );
 478
 479
 480                         $this->scheme = 'http';
 481                         if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
 482                                 $this->scheme = 'https';
 483                         elseif(x($_SERVER,'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443))
 484                                 $this->scheme = 'https';
 485
 486                         if(x($_SERVER,'SERVER_NAME')) {
 487                                 $this->hostname = $_SERVER['SERVER_NAME'];
 488
 489                                 // See bug 437 - this didn't work so disabling it
 490                                 //if(stristr($this->hostname,'xn--')) {
 491                                         // PHP or webserver may have converted idn to punycode, so
 492                                         // convert punycode back to utf-8
 493                                 //      require_once('library/simplepie/idn/idna_convert.class.php');
 494                                 //      $x = new idna_convert();
 495                                 //      $this->hostname = $x->decode($_SERVER['SERVER_NAME']);
 496                                 //}
 497
 498                                 if(x($_SERVER,'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443)
 499                                         $this->hostname .= ':' . $_SERVER['SERVER_PORT'];
 500                                 /**
 501                                  * Figure out if we are running at the top of a domain
 502                                  * or in a sub-directory and adjust accordingly
 503                                  */
 504
 505                                 $path = trim(dirname($_SERVER['SCRIPT_NAME']),'/\\');
 506                                 if(isset($path) && strlen($path) && ($path != $this->path))
 507                                         $this->path = $path;
 508                         }
 509
 510                         if ($hostname != "")
 511                                 $this->hostname = $hostname;
 512
 513                         if (is_array($_SERVER["argv"]) && $_SERVER["argc"]>1 && substr(end($_SERVER["argv"]), 0, 4)=="http" ) {
 514                                 $this->set_baseurl(array_pop($_SERVER["argv"]) );
 515                                 $_SERVER["argc"] --;
 516                         }
 517
 518                         #set_include_path("include/$this->hostname" . PATH_SEPARATOR . get_include_path());
 519
 520                         if((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,9) === "pagename=") {
 521                                 $this->query_string = substr($_SERVER['QUERY_STRING'],9);
 522                                 // removing trailing / - maybe a nginx problem
 523                                 if (substr($this->query_string, 0, 1) == "/")
 524                                         $this->query_string = substr($this->query_string, 1);
 525                         } elseif((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,2) === "q=") {
 526                                 $this->query_string = substr($_SERVER['QUERY_STRING'],2);
 527                                 // removing trailing / - maybe a nginx problem
 528                                 if (substr($this->query_string, 0, 1) == "/")
 529                                         $this->query_string = substr($this->query_string, 1);
 530                         }
 531
 532                         if (x($_GET,'pagename'))
 533                                 $this->cmd = trim($_GET['pagename'],'/\\');
 534                         elseif (x($_GET,'q'))
 535                                 $this->cmd = trim($_GET['q'],'/\\');
 536
 537
 538                         // fix query_string
 539                         $this->query_string = str_replace($this->cmd."&",$this->cmd."?", $this->query_string);
 540
 541
 542                         // unix style "homedir"
 543
 544                         if(substr($this->cmd,0,1) === '~')
 545                                 $this->cmd = 'profile/' . substr($this->cmd,1);
 546
 547                         // Diaspora style profile url
 548
 549                         if(substr($this->cmd,0,2) === 'u/')
 550                                 $this->cmd = 'profile/' . substr($this->cmd,2);
 551
 552
 553                         /**
 554                          *
 555                          * Break the URL path into C style argc/argv style arguments for our
 556                          * modules. Given "http://example.com/module/arg1/arg2", $this->argc
 557                          * will be 3 (integer) and $this->argv will contain:
 558                          *   [0] => 'module'
 559                          *   [1] => 'arg1'
 560                          *   [2] => 'arg2'
 561                          *
 562                          *
 563                          * There will always be one argument. If provided a naked domain
 564                          * URL, $this->argv[0] is set to "home".
 565                          *
 566                          */
 567
 568                         $this->argv = explode('/',$this->cmd);
 569                         $this->argc = count($this->argv);
 570                         if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
 571                                 $this->module = str_replace(".", "_", $this->argv[0]);
 572                                 $this->module = str_replace("-", "_", $this->module);
 573                         }
 574                         else {
 575                                 $this->argc = 1;
 576                                 $this->argv = array('home');
 577                                 $this->module = 'home';
 578                         }
 579
 580                         /**
 581                          * See if there is any page number information, and initialise
 582                          * pagination
 583                          */
 584
 585                         $this->pager['page'] = ((x($_GET,'page') && intval($_GET['page']) > 0) ? intval($_GET['page']) : 1);
 586                         $this->pager['itemspage'] = 50;
 587                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 588                         if($this->pager['start'] < 0)
 589                                 $this->pager['start'] = 0;
 590                         $this->pager['total'] = 0;
 591
 592                         /**
 593                          * Detect mobile devices
 594                          */
 595
 596                         $mobile_detect = new Mobile_Detect();
 597                         $this->is_mobile = $mobile_detect->isMobile();
 598                         $this->is_tablet = $mobile_detect->isTablet();
 599
 600                         // Friendica-Client
 601                         $this->is_friendica_app = ($_SERVER['HTTP_USER_AGENT'] == "Apache-HttpClient/UNAVAILABLE (java 1.4)");
 602
 603                         /**
 604                          * register template engines
 605                          */
 606                         $dc = get_declared_classes();
 607                         foreach ($dc as $k) {
 608                                 if (in_array("ITemplateEngine", class_implements($k))){
 609                                         $this->register_template_engine($k);
 610                                 }
 611                         }
 612
 613                 }
 614
 615                 function get_basepath() {
 616
 617                         $basepath = get_config("system", "basepath");
 618
 619                         if ($basepath == "")
 620                                 $basepath = $_SERVER["DOCUMENT_ROOT"];
 621
 622                         if ($basepath == "")
 623                                 $basepath = $_SERVER["PWD"];
 624
 625                         return($basepath);
 626                 }
 627
 628                 function get_scheme() {
 629                         return($this->scheme);
 630                 }
 631
 632                 function get_baseurl($ssl = false) {
 633
 634                         $scheme = $this->scheme;
 635
 636                         if((x($this->config,'system')) && (x($this->config['system'],'ssl_policy'))) {
 637                                 if(intval($this->config['system']['ssl_policy']) === intval(SSL_POLICY_FULL))
 638                                         $scheme = 'https';
 639
 640                                 //      Basically, we have $ssl = true on any links which can only be seen by a logged in user
 641                                 //      (and also the login link). Anything seen by an outsider will have it turned off.
 642
 643                                 if($this->config['system']['ssl_policy'] == SSL_POLICY_SELFSIGN) {
 644                                         if($ssl)
 645                                                 $scheme = 'https';
 646                                         else
 647                                                 $scheme = 'http';
 648                                 }
 649                         }
 650
 651                         if (get_config('config','hostname') != "")
 652                                 $this->hostname = get_config('config','hostname');
 653
 654                         $this->baseurl = $scheme . "://" . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
 655                         return $this->baseurl;
 656                 }
 657
 658                 function set_baseurl($url) {
 659                         $parsed = @parse_url($url);
 660
 661                         $this->baseurl = $url;
 662
 663                         if($parsed) {
 664                                 $this->scheme = $parsed['scheme'];
 665
 666                                 $hostname = $parsed['host'];
 667                                 if(x($parsed,'port'))
 668                                         $hostname .= ':' . $parsed['port'];
 669                                 if(x($parsed,'path'))
 670                                         $this->path = trim($parsed['path'],'\\/');
 671
 672                                 if (file_exists(".htpreconfig.php"))
 673                                         @include(".htpreconfig.php");
 674
 675                                 if (get_config('config','hostname') != "")
 676                                         $this->hostname = get_config('config','hostname');
 677
 678                                 if (!isset($this->hostname) OR ($this->hostname == ""))
 679                                         $this->hostname = $hostname;
 680                         }
 681
 682                 }
 683
 684                 function get_hostname() {
 685                         if (get_config('config','hostname') != "")
 686                                 $this->hostname = get_config('config','hostname');
 687
 688                         return $this->hostname;
 689                 }
 690
 691                 function set_hostname($h) {
 692                         $this->hostname = $h;
 693                 }
 694
 695                 function set_path($p) {
 696                         $this->path = trim(trim($p),'/');
 697                 }
 698
 699                 function get_path() {
 700                         return $this->path;
 701                 }
 702
 703                 function set_pager_total($n) {
 704                         $this->pager['total'] = intval($n);
 705                 }
 706
 707                 function set_pager_itemspage($n) {
 708                         $this->pager['itemspage'] = ((intval($n) > 0) ? intval($n) : 0);
 709                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 710                 }
 711
 712                 function set_pager_page($n) {
 713                         $this->pager['page'] = $n;
 714                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 715                 }
 716
 717                 function init_pagehead() {
 718                         $interval = ((local_user()) ? get_pconfig(local_user(),'system','update_interval') : 40000);
 719                         if($interval < 10000)
 720                                 $interval = 40000;
 721
 722                         $this->page['title'] = $this->config['sitename'];
 723
 724                         /* put the head template at the beginning of page['htmlhead']
 725                          * since the code added by the modules frequently depends on it
 726                          * being first
 727                          */
 728                         if(!isset($this->page['htmlhead']))
 729                                 $this->page['htmlhead'] = '';
 730
 731                         // If we're using Smarty, then doing replace_macros() will replace
 732                         // any unrecognized variables with a blank string. Since we delay
 733                         // replacing $stylesheet until later, we need to replace it now
 734                         // with another variable name
 735                         if($this->theme['template_engine'] === 'smarty3')
 736                                 $stylesheet = $this->get_template_ldelim('smarty3') . '$stylesheet' . $this->get_template_rdelim('smarty3');
 737                         else
 738                                 $stylesheet = '$stylesheet';
 739
 740                         $shortcut_icon = get_config("system", "shortcut_icon");
 741                         if ($shortcut_icon == "")
 742                                 $shortcut_icon = $this->get_baseurl()."/images/friendica-32.png";
 743
 744                         $touch_icon = get_config("system", "touch_icon");
 745                         if ($touch_icon == "")
 746                                 $touch_icon = $this->get_baseurl()."/images/friendica-128.png";
 747
 748                         $tpl = get_markup_template('head.tpl');
 749                         $this->page['htmlhead'] = replace_macros($tpl,array(
 750                                 '$baseurl' => $this->get_baseurl(), // FIXME for z_path!!!!
 751                                 '$local_user' => local_user(),
 752                                 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
 753                                 '$delitem' => t('Delete this item?'),
 754                                 '$comment' => t('Comment'),
 755                                 '$showmore' => t('show more'),
 756                                 '$showfewer' => t('show fewer'),
 757                                 '$update_interval' => $interval,
 758                                 '$shortcut_icon' => $shortcut_icon,
 759                                 '$touch_icon' => $touch_icon,
 760                                 '$stylesheet' => $stylesheet
 761                         )) . $this->page['htmlhead'];
 762                 }
 763
 764                 function init_page_end() {
 765                         if(!isset($this->page['end']))
 766                                 $this->page['end'] = '';
 767                         $tpl = get_markup_template('end.tpl');
 768                         $this->page['end'] = replace_macros($tpl,array(
 769                                 '$baseurl' => $this->get_baseurl() // FIXME for z_path!!!!
 770                         )) . $this->page['end'];
 771                 }
 772
 773                 function set_curl_code($code) {
 774                         $this->curl_code = $code;
 775                 }
 776
 777                 function get_curl_code() {
 778                         return $this->curl_code;
 779                 }
 780
 781                 function set_curl_content_type($content_type) {
 782                         $this->curl_content_type = $content_type;
 783                 }
 784
 785                 function get_curl_content_type() {
 786                         return $this->curl_content_type;
 787                 }
 788
 789                 function set_curl_headers($headers) {
 790                         $this->curl_headers = $headers;
 791                 }
 792
 793                 function get_curl_headers() {
 794                         return $this->curl_headers;
 795                 }
 796
 797                 function get_cached_avatar_image($avatar_image){
 798                         if($this->cached_profile_image[$avatar_image])
 799                                 return $this->cached_profile_image[$avatar_image];
 800
 801                         $path_parts = explode("/",$avatar_image);
 802                         $common_filename = $path_parts[count($path_parts)-1];
 803
 804                         if($this->cached_profile_picdate[$common_filename]){
 805                                 $this->cached_profile_image[$avatar_image] = $avatar_image . $this->cached_profile_picdate[$common_filename];
 806                         } else {
 807                                 $r = q("SELECT `contact`.`avatar-date` AS picdate FROM `contact` WHERE `contact`.`thumb` like '%%/%s'",
 808                                         $common_filename);
 809                                 if(! count($r)){
 810                                         $this->cached_profile_image[$avatar_image] = $avatar_image;
 811                                 } else {
 812                                         $this->cached_profile_picdate[$common_filename] = "?rev=".urlencode($r[0]['picdate']);
 813                                         $this->cached_profile_image[$avatar_image] = $avatar_image.$this->cached_profile_picdate[$common_filename];
 814                                 }
 815                         }
 816                         return $this->cached_profile_image[$avatar_image];
 817                 }
 818
 819
 820                 /**
 821                  * register template engine class
 822                  * if $name is "", is used class static property $class::$name
 823                  * @param string $class
 824                  * @param string $name
 825                  */
 826                 function register_template_engine($class, $name = '') {
 827                         if ($name===""){
 828                                 $v = get_class_vars( $class );
 829                                 if(x($v,"name")) $name = $v['name'];
 830                         }
 831                         if ($name===""){
 832                                 echo "template engine <tt>$class</tt> cannot be registered without a name.\n";
 833                                 killme();
 834                         }
 835                         $this->template_engines[$name] = $class;
 836                 }
 837
 838                 /**
 839                  * return template engine instance. If $name is not defined,
 840                  * return engine defined by theme, or default
 841                  *
 842                  * @param strin $name Template engine name
 843                  * @return object Template Engine instance
 844                  */
 845                 function template_engine($name = ''){
 846                         if ($name!=="") {
 847                                 $template_engine = $name;
 848                         } else {
 849                                 $template_engine = 'smarty3';
 850                                 if (x($this->theme, 'template_engine')) {
 851                                         $template_engine = $this->theme['template_engine'];
 852                                 }
 853                         }
 854
 855                         if (isset($this->template_engines[$template_engine])){
 856                                 if(isset($this->template_engine_instance[$template_engine])){
 857                                         return $this->template_engine_instance[$template_engine];
 858                                 } else {
 859                                         $class = $this->template_engines[$template_engine];
 860                                         $obj = new $class;
 861                                         $this->template_engine_instance[$template_engine] = $obj;
 862                                         return $obj;
 863                                 }
 864                         }
 865
 866                         echo "template engine <tt>$template_engine</tt> is not registered!\n"; killme();
 867                 }
 868
 869                 function get_template_engine() {
 870                         return $this->theme['template_engine'];
 871                 }
 872
 873                 function set_template_engine($engine = 'smarty3') {
 874                         $this->theme['template_engine'] = $engine;
 875                         /*
 876                         $this->theme['template_engine'] = 'smarty3';
 877
 878                         switch($engine) {
 879                                 case 'smarty3':
 880                                         if(is_writable('view/smarty3/'))
 881                                                 $this->theme['template_engine'] = 'smarty3';
 882                                         break;
 883                                 default:
 884                                         break;
 885                         }
 886                         */
 887                 }
 888
 889                 function get_template_ldelim($engine = 'smarty3') {
 890                         return $this->ldelim[$engine];
 891                 }
 892
 893                 function get_template_rdelim($engine = 'smarty3') {
 894                         return $this->rdelim[$engine];
 895                 }
 896
 897                 function save_timestamp($stamp, $value) {
 898                         $duration = (float)(microtime(true)-$stamp);
 899
 900                         $this->performance[$value] += (float)$duration;
 901                         $this->performance["marktime"] += (float)$duration;
 902                 }
 903
 904                 function mark_timestamp($mark) {
 905                         //$this->performance["markstart"] -= microtime(true) - $this->performance["marktime"];
 906                         $this->performance["markstart"] = microtime(true) - $this->performance["markstart"] - $this->performance["marktime"];
 907                 }
 908
 909                 function get_useragent() {
 910                         return(FRIENDICA_PLATFORM." '".FRIENDICA_CODENAME."' ".FRIENDICA_VERSION."-".DB_UPDATE_VERSION."; ".$this->get_baseurl());
 911                 }
 912
 913                 function is_friendica_app() {
 914                         return($this->is_friendica_app);
 915                 }
 916
 917         }
 918 }
 919
 920 // retrieve the App structure
 921 // useful in functions which require it but don't get it passed to them
 922
 923 if(! function_exists('get_app')) {
 924         function get_app() {
 925                 global $a;
 926                 return $a;
 927         }
 928 };
 929
 930
 931 // Multi-purpose function to check variable state.
 932 // Usage: x($var) or $x($array,'key')
 933 // returns false if variable/key is not set
 934 // if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
 935 // e.g. x('') or x(0) returns 0;
 936
 937 if(! function_exists('x')) {
 938         function x($s,$k = NULL) {
 939                 if($k != NULL) {
 940                         if((is_array($s)) && (array_key_exists($k,$s))) {
 941                                 if($s[$k])
 942                                         return (int) 1;
 943                                 return (int) 0;
 944                 }
 945                         return false;
 946                 }
 947                 else {
 948                         if(isset($s)) {
 949                                 if($s) {
 950                                         return (int) 1;
 951                                 }
 952                                 return (int) 0;
 953                         }
 954                         return false;
 955                 }
 956         }
 957 }
 958
 959 // called from db initialisation if db is dead.
 960
 961 if(! function_exists('system_unavailable')) {
 962         function system_unavailable() {
 963                 include('system_unavailable.php');
 964                 system_down();
 965                 killme();
 966         }
 967 }
 968
 969
 970
 971 function clean_urls() {
 972         global $a;
 973         //      if($a->config['system']['clean_urls'])
 974         return true;
 975         //      return false;
 976 }
 977
 978 function z_path() {
 979         global $a;
 980         $base = $a->get_baseurl();
 981         if(! clean_urls())
 982                 $base .= '/?q=';
 983         return $base;
 984 }
 985
 986 function z_root() {
 987         global $a;
 988         return $a->get_baseurl();
 989 }
 990
 991 function absurl($path) {
 992         if(strpos($path,'/') === 0)
 993                 return z_path() . $path;
 994         return $path;
 995 }
 996
 997 function is_ajax() {
 998         return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
 999 }
1000
1001 function check_db() {
1002
1003         $build = get_config('system','build');
1004         if(! x($build)) {
1005                 set_config('system','build',DB_UPDATE_VERSION);
1006                 $build = DB_UPDATE_VERSION;
1007         }
1008         if($build != DB_UPDATE_VERSION)
1009                 proc_run('php', 'include/dbupdate.php');
1010
1011 }
1012
1013
1014
1015
1016 // Sets the base url for use in cmdline programs which don't have
1017 // $_SERVER variables
1018
1019 if(! function_exists('check_url')) {
1020         function check_url(&$a) {
1021
1022                 $url = get_config('system','url');
1023
1024                 // if the url isn't set or the stored url is radically different
1025                 // than the currently visited url, store the current value accordingly.
1026                 // "Radically different" ignores common variations such as http vs https
1027                 // and www.example.com vs example.com.
1028                 // We will only change the url to an ip address if there is no existing setting
1029
1030                 if(! x($url))
1031                         $url = set_config('system','url',$a->get_baseurl());
1032                 if((! link_compare($url,$a->get_baseurl())) && (! preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/",$a->get_hostname)))
1033                         $url = set_config('system','url',$a->get_baseurl());
1034
1035                 return;
1036         }
1037 }
1038
1039
1040 // Automatic database updates
1041
1042 if(! function_exists('update_db')) {
1043         function update_db(&$a) {
1044                 $build = get_config('system','build');
1045                 if(! x($build))
1046                         $build = set_config('system','build',DB_UPDATE_VERSION);
1047
1048                 if($build != DB_UPDATE_VERSION) {
1049                         $stored = intval($build);
1050                         $current = intval(DB_UPDATE_VERSION);
1051                         if($stored < $current) {
1052                                 load_config('database');
1053
1054                                 // We're reporting a different version than what is currently installed.
1055                                 // Run any existing update scripts to bring the database up to current.
1056
1057                                 // make sure that boot.php and update.php are the same release, we might be
1058                                 // updating right this very second and the correct version of the update.php
1059                                 // file may not be here yet. This can happen on a very busy site.
1060
1061                                 if(DB_UPDATE_VERSION == UPDATE_VERSION) {
1062                                         // Compare the current structure with the defined structure
1063
1064                                         $t = get_config('database','dbupdate_'.DB_UPDATE_VERSION);
1065                                         if($t !== false)
1066                                                 return;
1067
1068                                         set_config('database','dbupdate_'.DB_UPDATE_VERSION, time());
1069
1070                                         // run old update routine (wich could modify the schema and
1071                                         // conflits with new routine)
1072                                         for ($x = $stored; $x < NEW_UPDATE_ROUTINE_VERSION; $x++) {
1073                                                 $r = run_update_function($x);
1074                                                 if (!$r) break;
1075                                         }
1076                                         if ($stored < NEW_UPDATE_ROUTINE_VERSION) $stored = NEW_UPDATE_ROUTINE_VERSION;
1077
1078
1079                                         // run new update routine
1080                                         // it update the structure in one call
1081                                         $retval = update_structure(false, true);
1082                                         if($retval) {
1083                                                 update_fail(
1084                                                         DB_UPDATE_VERSION,
1085                                                         $retval
1086                                                 );
1087                                                 return;
1088                                         } else {
1089                                                 set_config('database','dbupdate_'.DB_UPDATE_VERSION, 'success');
1090                                         }
1091
1092                                         // run any left update_nnnn functions in update.php
1093                                         for($x = $stored; $x < $current; $x ++) {
1094                                                 $r = run_update_function($x);
1095                                                 if (!$r) break;
1096                                         }
1097                                 }
1098                         }
1099                 }
1100
1101                 return;
1102         }
1103 }
1104 if(!function_exists('run_update_function')){
1105         function run_update_function($x) {
1106                 if(function_exists('update_' . $x)) {
1107
1108                         // There could be a lot of processes running or about to run.
1109                         // We want exactly one process to run the update command.
1110                         // So store the fact that we're taking responsibility
1111                         // after first checking to see if somebody else already has.
1112
1113                         // If the update fails or times-out completely you may need to
1114                         // delete the config entry to try again.
1115
1116                         $t = get_config('database','update_' . $x);
1117                         if($t !== false)
1118                                 return false;
1119                         set_config('database','update_' . $x, time());
1120
1121                         // call the specific update
1122
1123                         $func = 'update_' . $x;
1124                         $retval = $func();
1125
1126                         if($retval) {
1127                                 //send the administrator an e-mail
1128                                 update_fail(
1129                                         $x,
1130                                         sprintf(t('Update %s failed. See error logs.'), $x)
1131                                 );
1132                                 return false;
1133                         } else {
1134                                 set_config('database','update_' . $x, 'success');
1135                                 set_config('system','build', $x + 1);
1136                                 return true;
1137                         }
1138                 } else {
1139                         set_config('database','update_' . $x, 'success');
1140                         set_config('system','build', $x + 1);
1141                         return true;
1142                 }
1143                 return true;
1144         }
1145 }
1146
1147
1148 if(! function_exists('check_plugins')) {
1149         function check_plugins(&$a) {
1150
1151                 /**
1152                  *
1153                  * Synchronise plugins:
1154                  *
1155                  * $a->config['system']['addon'] contains a comma-separated list of names
1156                  * of plugins/addons which are used on this system.
1157                  * Go through the database list of already installed addons, and if we have
1158                  * an entry, but it isn't in the config list, call the uninstall procedure
1159                  * and mark it uninstalled in the database (for now we'll remove it).
1160                  * Then go through the config list and if we have a plugin that isn't installed,
1161                  * call the install procedure and add it to the database.
1162                  *
1163                  */
1164
1165                 $r = q("SELECT * FROM `addon` WHERE `installed` = 1");
1166                 if(count($r))
1167                         $installed = $r;
1168                 else
1169                         $installed = array();
1170
1171                 $plugins = get_config('system','addon');
1172                 $plugins_arr = array();
1173
1174                 if($plugins)
1175                         $plugins_arr = explode(',',str_replace(' ', '',$plugins));
1176
1177                 $a->plugins = $plugins_arr;
1178
1179                 $installed_arr = array();
1180
1181                 if(count($installed)) {
1182                         foreach($installed as $i) {
1183                                 if(! in_array($i['name'],$plugins_arr)) {
1184                                         uninstall_plugin($i['name']);
1185                                 }
1186                                 else {
1187                                         $installed_arr[] = $i['name'];
1188                                 }
1189                         }
1190                 }
1191
1192                 if(count($plugins_arr)) {
1193                         foreach($plugins_arr as $p) {
1194                                 if(! in_array($p,$installed_arr)) {
1195                                         install_plugin($p);
1196                                 }
1197                         }
1198                 }
1199
1200
1201                 load_hooks();
1202
1203                 return;
1204         }
1205 }
1206
1207 function get_guid($size=16, $prefix = "") {
1208
1209         if ($prefix == "") {
1210                 $a = get_app();
1211                 $prefix = hash("crc32", $a->get_hostname());
1212         }
1213
1214         while (strlen($prefix) < ($size - 13))
1215                 $prefix .= mt_rand();
1216
1217         if ($size >= 24) {
1218                 $prefix = substr($prefix, 0, $size - 22);
1219                 return(str_replace(".", "", uniqid($prefix, true)));
1220         } else {
1221                 $prefix = substr($prefix, 0, $size - 13);
1222                 return(uniqid($prefix));
1223         }
1224 }
1225
1226 // wrapper for adding a login box. If $register == true provide a registration
1227 // link. This will most always depend on the value of $a->config['register_policy'].
1228 // returns the complete html for inserting into the page
1229
1230 if(! function_exists('login')) {
1231         function login($register = false, $hiddens=false) {
1232                 $a = get_app();
1233                 $o = "";
1234                 $reg = false;
1235                 if ($register) {
1236                         $reg = array(
1237                                 'title' => t('Create a New Account'),
1238                                 'desc' => t('Register')
1239                         );
1240                 }
1241
1242                 $noid = get_config('system','no_openid');
1243
1244                 $dest_url = $a->get_baseurl(true) . '/' . $a->query_string;
1245
1246                 if(local_user()) {
1247                         $tpl = get_markup_template("logout.tpl");
1248                 }
1249                 else {
1250                         $a->page['htmlhead'] .= replace_macros(get_markup_template("login_head.tpl"),array(
1251                                 '$baseurl'              => $a->get_baseurl(true)
1252                         ));
1253
1254                         $tpl = get_markup_template("login.tpl");
1255                         $_SESSION['return_url'] = $a->query_string;
1256                         $a->module = 'login';
1257                 }
1258
1259                 $o .= replace_macros($tpl, array(
1260
1261                         '$dest_url'     => $dest_url,
1262                         '$logout'       => t('Logout'),
1263                         '$login'        => t('Login'),
1264
1265                         '$lname'                => array('username', t('Nickname or Email address: ') , '', ''),
1266                         '$lpassword'    => array('password', t('Password: '), '', ''),
1267                         '$lremember'    => array('remember', t('Remember me'), 0,  ''),
1268
1269                         '$openid'               => !$noid,
1270                         '$lopenid'      => array('openid_url', t('Or login using OpenID: '),'',''),
1271
1272                         '$hiddens'      => $hiddens,
1273
1274                         '$register'     => $reg,
1275
1276                         '$lostpass'     => t('Forgot your password?'),
1277                         '$lostlink'     => t('Password Reset'),
1278
1279                         '$tostitle'     => t('Website Terms of Service'),
1280                         '$toslink'      => t('terms of service'),
1281
1282                         '$privacytitle' => t('Website Privacy Policy'),
1283                         '$privacylink'  => t('privacy policy'),
1284
1285                 ));
1286
1287                 call_hooks('login_hook',$o);
1288
1289                 return $o;
1290         }
1291 }
1292
1293 // Used to end the current process, after saving session state.
1294
1295 if(! function_exists('killme')) {
1296         function killme() {
1297                 session_write_close();
1298                 exit;
1299         }
1300 }
1301
1302 // redirect to another URL and terminate this process.
1303
1304 if(! function_exists('goaway')) {
1305         function goaway($s) {
1306                 header("Location: $s");
1307                 killme();
1308         }
1309 }
1310
1311
1312 // Returns the uid of locally logged in user or false.
1313
1314 if(! function_exists('local_user')) {
1315         function local_user() {
1316                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
1317                         return intval($_SESSION['uid']);
1318                 return false;
1319         }
1320 }
1321
1322 // Returns contact id of authenticated site visitor or false
1323
1324 if(! function_exists('remote_user')) {
1325         function remote_user() {
1326                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'visitor_id')))
1327                         return intval($_SESSION['visitor_id']);
1328                 return false;
1329         }
1330 }
1331
1332 // contents of $s are displayed prominently on the page the next time
1333 // a page is loaded. Usually used for errors or alerts.
1334
1335 if(! function_exists('notice')) {
1336         /**
1337          * Show an error message to user.
1338          *
1339          * This function save text in session, to be shown to the user at next page load
1340          *
1341          * @param string $s - Text of notice
1342          */
1343         function notice($s) {
1344                 $a = get_app();
1345                 if(! x($_SESSION,'sysmsg'))     $_SESSION['sysmsg'] = array();
1346                 if($a->interactive)
1347                         $_SESSION['sysmsg'][] = $s;
1348         }
1349 }
1350 if(! function_exists('info')) {
1351         /**
1352          * Show an info message to user.
1353          *
1354          * This function save text in session, to be shown to the user at next page load
1355          *
1356          * @param string $s - Text of notice
1357          */
1358         function info($s) {
1359                 $a = get_app();
1360
1361                 if (local_user() AND get_pconfig(local_user(),'system','ignore_info'))
1362                         return;
1363
1364                 if(! x($_SESSION,'sysmsg_info')) $_SESSION['sysmsg_info'] = array();
1365                 if($a->interactive)
1366                         $_SESSION['sysmsg_info'][] = $s;
1367         }
1368 }
1369
1370
1371 // wrapper around config to limit the text length of an incoming message
1372
1373 if(! function_exists('get_max_import_size')) {
1374         function get_max_import_size() {
1375                 global $a;
1376                 return ((x($a->config,'max_import_size')) ? $a->config['max_import_size'] : 0 );
1377         }
1378 }
1379
1380 /**
1381  *
1382  * Wrap calls to proc_close(proc_open()) and call hook
1383  * so plugins can take part in process :)
1384  *
1385  * args:
1386  * $cmd program to run
1387  *  next args are passed as $cmd command line
1388  *
1389  * e.g.: proc_run("ls","-la","/tmp");
1390  *
1391  * $cmd and string args are surrounded with ""
1392  */
1393
1394 if(! function_exists('proc_run')) {
1395         function proc_run($cmd){
1396
1397                 $a = get_app();
1398
1399                 $args = func_get_args();
1400
1401                 $newargs = array();
1402                 if(! count($args))
1403                         return;
1404
1405                 // expand any arrays
1406
1407                 foreach($args as $arg) {
1408                         if(is_array($arg)) {
1409                                 foreach($arg as $n) {
1410                                         $newargs[] = $n;
1411                                 }
1412                         }
1413                         else
1414                                 $newargs[] = $arg;
1415                 }
1416
1417                 $args = $newargs;
1418
1419                 $arr = array('args' => $args, 'run_cmd' => true);
1420
1421                 call_hooks("proc_run", $arr);
1422                 if(! $arr['run_cmd'])
1423                         return;
1424
1425                 if(count($args) && $args[0] === 'php')
1426                         $args[0] = ((x($a->config,'php_path')) && (strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
1427
1428                 // add baseurl to args. cli scripts can't construct it
1429                 $args[] = $a->get_baseurl();
1430
1431                 for($x = 0; $x < count($args); $x ++)
1432                         $args[$x] = escapeshellarg($args[$x]);
1433
1434
1435
1436                 $cmdline = implode($args," ");
1437                 if(get_config('system','proc_windows'))
1438                         proc_close(proc_open('cmd /c start /b ' . $cmdline,array(),$foo,dirname(__FILE__)));
1439                 else
1440                         proc_close(proc_open($cmdline." &",array(),$foo,dirname(__FILE__)));
1441         }
1442 }
1443
1444 if(! function_exists('current_theme')) {
1445         function current_theme(){
1446                 $app_base_themes = array('duepuntozero', 'dispy', 'quattro');
1447
1448                 $a = get_app();
1449
1450                 $page_theme = null;
1451
1452                 // Find the theme that belongs to the user whose stuff we are looking at
1453
1454                 if($a->profile_uid && ($a->profile_uid != local_user())) {
1455                         $r = q("select theme from user where uid = %d limit 1",
1456                                 intval($a->profile_uid)
1457                         );
1458                         if($r)
1459                                 $page_theme = $r[0]['theme'];
1460                 }
1461
1462                 // Allow folks to over-rule user themes and always use their own on their own site.
1463                 // This works only if the user is on the same server
1464
1465                 if($page_theme && local_user() && (local_user() != $a->profile_uid)) {
1466                         if(get_pconfig(local_user(),'system','always_my_theme'))
1467                                 $page_theme = null;
1468                 }
1469
1470 //              $mobile_detect = new Mobile_Detect();
1471 //              $is_mobile = $mobile_detect->isMobile() || $mobile_detect->isTablet();
1472                 $is_mobile = $a->is_mobile || $a->is_tablet;
1473
1474                 $standard_system_theme = ((isset($a->config['system']['theme'])) ? $a->config['system']['theme'] : '');
1475                 $standard_theme_name = ((isset($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $standard_system_theme);
1476
1477                 if($is_mobile) {
1478                         if(isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
1479                                 $system_theme = '';
1480                                 $theme_name = '';
1481                         }
1482                         else {
1483                                 $system_theme = ((isset($a->config['system']['mobile-theme'])) ? $a->config['system']['mobile-theme'] : '');
1484                                 $theme_name = ((isset($_SESSION) && x($_SESSION,'mobile-theme')) ? $_SESSION['mobile-theme'] : $system_theme);
1485
1486                                 if($theme_name === '---') {
1487                                         // user has selected to have the mobile theme be the same as the normal one
1488                                         $system_theme = '';
1489                                         $theme_name = '';
1490                                 }
1491                         }
1492                 }
1493                 else {
1494                         $system_theme = $standard_system_theme;
1495                         $theme_name = $standard_theme_name;
1496
1497                         if($page_theme)
1498                                 $theme_name = $page_theme;
1499                 }
1500
1501                 if($theme_name &&
1502                                 (file_exists('view/theme/' . $theme_name . '/style.css') ||
1503                                                 file_exists('view/theme/' . $theme_name . '/style.php')))
1504                         return($theme_name);
1505
1506                 foreach($app_base_themes as $t) {
1507                         if(file_exists('view/theme/' . $t . '/style.css')||
1508                                         file_exists('view/theme/' . $t . '/style.php'))
1509                                 return($t);
1510                 }
1511
1512                 $fallback = array_merge(glob('view/theme/*/style.css'),glob('view/theme/*/style.php'));
1513                 if(count($fallback))
1514                         return (str_replace('view/theme/','', substr($fallback[0],0,-10)));
1515
1516         }
1517 }
1518
1519 /*
1520  * Return full URL to theme which is currently in effect.
1521 * Provide a sane default if nothing is chosen or the specified theme does not exist.
1522 */
1523 if(! function_exists('current_theme_url')) {
1524         function current_theme_url() {
1525                 global $a;
1526
1527                 $t = current_theme();
1528
1529                 $opts = (($a->profile_uid) ? '?f=&puid=' . $a->profile_uid : '');
1530                 if (file_exists('view/theme/' . $t . '/style.php'))
1531                         return($a->get_baseurl() . '/view/theme/' . $t . '/style.pcss' . $opts);
1532
1533                 return($a->get_baseurl() . '/view/theme/' . $t . '/style.css');
1534         }
1535 }
1536
1537 if(! function_exists('feed_birthday')) {
1538         function feed_birthday($uid,$tz) {
1539
1540                 /**
1541                  *
1542                  * Determine the next birthday, but only if the birthday is published
1543                  * in the default profile. We _could_ also look for a private profile that the
1544                  * recipient can see, but somebody could get mad at us if they start getting
1545                  * public birthday greetings when they haven't made this info public.
1546                  *
1547                  * Assuming we are able to publish this info, we are then going to convert
1548                  * the start time from the owner's timezone to UTC.
1549                  *
1550                  * This will potentially solve the problem found with some social networks
1551                  * where birthdays are converted to the viewer's timezone and salutations from
1552                  * elsewhere in the world show up on the wrong day. We will convert it to the
1553                  * viewer's timezone also, but first we are going to convert it from the birthday
1554                  * person's timezone to GMT - so the viewer may find the birthday starting at
1555                  * 6:00PM the day before, but that will correspond to midnight to the birthday person.
1556                  *
1557                  */
1558
1559
1560                 $birthday = '';
1561
1562                 if(! strlen($tz))
1563                         $tz = 'UTC';
1564
1565                 $p = q("SELECT `dob` FROM `profile` WHERE `is-default` = 1 AND `uid` = %d LIMIT 1",
1566                                 intval($uid)
1567                 );
1568
1569                 if($p && count($p)) {
1570                         $tmp_dob = substr($p[0]['dob'],5);
1571                         if(intval($tmp_dob)) {
1572                                 $y = datetime_convert($tz,$tz,'now','Y');
1573                                 $bd = $y . '-' . $tmp_dob . ' 00:00';
1574                                 $t_dob = strtotime($bd);
1575                                 $now = strtotime(datetime_convert($tz,$tz,'now'));
1576                                 if($t_dob < $now)
1577                                         $bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
1578                                 $birthday = datetime_convert($tz,'UTC',$bd,ATOM_TIME);
1579                         }
1580                 }
1581
1582                 return $birthday;
1583         }
1584 }
1585
1586 if(! function_exists('is_site_admin')) {
1587         function is_site_admin() {
1588                 $a = get_app();
1589
1590                 $adminlist = explode(",", str_replace(" ", "", $a->config['admin_email']));
1591
1592                 //if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && ($a->user['email'] === $a->config['admin_email']))
1593                 if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && in_array($a->user['email'], $adminlist))
1594                         return true;
1595                 return false;
1596         }
1597 }
1598
1599
1600 if(! function_exists('load_contact_links')) {
1601         function load_contact_links($uid) {
1602
1603                 $a = get_app();
1604
1605                 $ret = array();
1606
1607                 if(! $uid || x($a->contacts,'empty'))
1608                         return;
1609
1610                 $r = q("SELECT `id`,`network`,`url`,`thumb` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 AND `thumb` != ''",
1611                                 intval($uid)
1612                 );
1613                 if(count($r)) {
1614                         foreach($r as $rr){
1615                                 $url = normalise_link($rr['url']);
1616                                 $ret[$url] = $rr;
1617                         }
1618                 }
1619                 else
1620                         $ret['empty'] = true;
1621                 $a->contacts = $ret;
1622                 return;
1623         }
1624 }
1625
1626 /**
1627 * returns querystring as string from a mapped array
1628 *
1629 * @param params Array
1630 * @return string
1631 */
1632 function build_querystring($params, $name=null) {
1633     $ret = "";
1634     foreach($params as $key=>$val) {
1635         if(is_array($val)) {
1636             if($name==null) {
1637                 $ret .= build_querystring($val, $key);
1638             } else {
1639                 $ret .= build_querystring($val, $name."[$key]");
1640             }
1641         } else {
1642             $val = urlencode($val);
1643             if($name!=null) {
1644                 $ret.=$name."[$key]"."=$val&";
1645             } else {
1646                 $ret.= "$key=$val&";
1647             }
1648         }
1649     }
1650     return $ret;
1651 }
1652
1653 function explode_querystring($query) {
1654         $arg_st = strpos($query, '?');
1655         if($arg_st !== false) {
1656                 $base = substr($query, 0, $arg_st);
1657                 $arg_st += 1;
1658         }
1659         else {
1660                 $base = '';
1661                 $arg_st = 0;
1662         }
1663
1664         $args = explode('&', substr($query, $arg_st));
1665         foreach($args as $k=>$arg) {
1666                 if($arg === '')
1667                         unset($args[$k]);
1668         }
1669         $args = array_values($args);
1670
1671         if(!$base) {
1672                 $base = $args[0];
1673                 unset($args[0]);
1674                 $args = array_values($args);
1675         }
1676
1677         return array(
1678                 'base' => $base,
1679                 'args' => $args,
1680         );
1681 }
1682
1683 /**
1684 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
1685 *
1686 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
1687 */
1688 function curPageURL() {
1689         $pageURL = 'http';
1690         if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
1691         $pageURL .= "://";
1692         if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
1693                 $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
1694         } else {
1695                 $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
1696         }
1697         return $pageURL;
1698 }
1699
1700 function random_digits($digits) {
1701         $rn = '';
1702         for($i = 0; $i < $digits; $i++) {
1703                 $rn .= rand(0,9);
1704         }
1705         return $rn;
1706 }
1707
1708 function get_cachefile($file, $writemode = true) {
1709         $cache = get_itemcachepath();
1710
1711         if ((! $cache) || (! is_dir($cache)))
1712                 return("");
1713
1714         $subfolder = $cache."/".substr($file, 0, 2);
1715
1716         $cachepath = $subfolder."/".$file;
1717
1718         if ($writemode) {
1719                 if (!is_dir($subfolder)) {
1720                         mkdir($subfolder);
1721                         chmod($subfolder, 0777);
1722                 }
1723         }
1724
1725         return($cachepath);
1726 }
1727
1728 function clear_cache($basepath = "", $path = "") {
1729         if ($path == "") {
1730                 $basepath = get_itemcachepath();
1731                 $path = $basepath;
1732         }
1733
1734         if (($path == "") OR (!is_dir($path)))
1735                 return;
1736
1737         if (substr(realpath($path), 0, strlen($basepath)) != $basepath)
1738                 return;
1739
1740         $cachetime = (int)get_config('system','itemcache_duration');
1741         if ($cachetime == 0)
1742                 $cachetime = 86400;
1743
1744         if (is_writable($path)){
1745         if ($dh = opendir($path)) {
1746                 while (($file = readdir($dh)) !== false) {
1747                         $fullpath = $path."/".$file;
1748                         if ((filetype($fullpath) == "dir") and ($file != ".") and ($file != ".."))
1749                                 clear_cache($basepath, $fullpath);
1750                         if ((filetype($fullpath) == "file") and (filectime($fullpath) < (time() - $cachetime)))
1751                                 unlink($fullpath);
1752                 }
1753                 closedir($dh);
1754         }
1755         }
1756 }
1757
1758 function get_itemcachepath() {
1759         // Checking, if the cache is deactivated
1760         $cachetime = (int)get_config('system','itemcache_duration');
1761         if ($cachetime < 0)
1762                 return "";
1763
1764         $itemcache = get_config('system','itemcache');
1765         if (($itemcache != "") AND is_dir($itemcache) AND is_writable($itemcache))
1766                 return($itemcache);
1767
1768         $temppath = get_temppath();
1769
1770         if ($temppath != "") {
1771                 $itemcache = $temppath."/itemcache";
1772                 if(!file_exists($itemcache) && !is_dir($itemcache)) {
1773                         mkdir($itemcache);
1774                 }
1775
1776                 if (is_dir($itemcache) AND is_writable($itemcache)) {
1777                         set_config("system", "itemcache", $itemcache);
1778                         return($itemcache);
1779                 }
1780         }
1781         return "";
1782 }
1783
1784 function get_lockpath() {
1785         $lockpath = get_config('system','lockpath');
1786         if (($lockpath != "") AND is_dir($lockpath) AND is_writable($lockpath))
1787                 return($lockpath);
1788
1789         $temppath = get_temppath();
1790
1791         if ($temppath != "") {
1792                 $lockpath = $temppath."/lock";
1793                 mkdir($lockpath);
1794
1795                 if (is_dir($lockpath) AND is_writable($lockpath)) {
1796                         set_config("system", "lockpath", $lockpath);
1797                         return($lockpath);
1798                 }
1799         }
1800         return "";
1801 }
1802
1803 function get_temppath() {
1804         $temppath = get_config("system","temppath");
1805         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath))
1806                 return($temppath);
1807
1808         $temppath = sys_get_temp_dir();
1809         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath)) {
1810                 set_config("system", "temppath", $temppath);
1811                 return($temppath);
1812         }
1813
1814         return("");
1815 }
1816
1817 function set_template_engine(&$a, $engine = 'internal') {
1818 // This function is no longer necessary, but keep it as a wrapper to the class method
1819 // to avoid breaking themes again unnecessarily
1820
1821         $a->set_template_engine($engine);
1822 }
1823
1824 if(!function_exists('exif_imagetype')) {
1825         function exif_imagetype($file) {
1826                 $size = getimagesize($file);
1827                 return($size[2]);
1828         }
1829 }