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',      '3.4.1' );
  21 define ( 'DFRN_PROTOCOL_VERSION',  '2.23'    );
  22 define ( 'DB_UPDATE_VERSION',      1186      );
  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 define ( 'ACTIVITY_SHARE',       NAMESPACE_ACTIVITY_SCHEMA . 'share' );
 278
 279 define ( 'ACTIVITY_POKE',        NAMESPACE_ZOT . '/activity/poke' );
 280 define ( 'ACTIVITY_MOOD',        NAMESPACE_ZOT . '/activity/mood' );
 281
 282 define ( 'ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark' );
 283 define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
 284 define ( 'ACTIVITY_OBJ_NOTE',    NAMESPACE_ACTIVITY_SCHEMA . 'note' );
 285 define ( 'ACTIVITY_OBJ_PERSON',  NAMESPACE_ACTIVITY_SCHEMA . 'person' );
 286 define ( 'ACTIVITY_OBJ_IMAGE',   NAMESPACE_ACTIVITY_SCHEMA . 'image' );
 287 define ( 'ACTIVITY_OBJ_PHOTO',   NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
 288 define ( 'ACTIVITY_OBJ_VIDEO',   NAMESPACE_ACTIVITY_SCHEMA . 'video' );
 289 define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
 290 define ( 'ACTIVITY_OBJ_ALBUM',   NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
 291 define ( 'ACTIVITY_OBJ_EVENT',   NAMESPACE_ACTIVITY_SCHEMA . 'event' );
 292 define ( 'ACTIVITY_OBJ_GROUP',   NAMESPACE_ACTIVITY_SCHEMA . 'group' );
 293 define ( 'ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN            . '/tagterm' );
 294 define ( 'ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN            . '/profile' );
 295 define ( 'ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question' );
 296
 297 /**
 298  * item weight for query ordering
 299  */
 300
 301 define ( 'GRAVITY_PARENT',       0);
 302 define ( 'GRAVITY_LIKE',         3);
 303 define ( 'GRAVITY_COMMENT',      6);
 304
 305 /**
 306  *
 307  * Reverse the effect of magic_quotes_gpc if it is enabled.
 308  * Please disable magic_quotes_gpc so we don't have to do this.
 309  * See http://php.net/manual/en/security.magicquotes.disabling.php
 310  *
 311  */
 312
 313 function startup() {
 314
 315         error_reporting(E_ERROR | E_WARNING | E_PARSE);
 316
 317         set_time_limit(0);
 318
 319         // This has to be quite large to deal with embedded private photos
 320         ini_set('pcre.backtrack_limit', 500000);
 321
 322
 323         if (get_magic_quotes_gpc()) {
 324                 $process = array(&$_GET, &$_POST, &$_COOKIE, &$_REQUEST);
 325                 while (list($key, $val) = each($process)) {
 326                         foreach ($val as $k => $v) {
 327                                 unset($process[$key][$k]);
 328                                 if (is_array($v)) {
 329                                         $process[$key][stripslashes($k)] = $v;
 330                                         $process[] = &$process[$key][stripslashes($k)];
 331                                 } else {
 332                                         $process[$key][stripslashes($k)] = stripslashes($v);
 333                                 }
 334                         }
 335                 }
 336                 unset($process);
 337         }
 338
 339 }
 340
 341 /**
 342  *
 343  * class: App
 344  *
 345  * Our main application structure for the life of this page
 346  * Primarily deals with the URL that got us here
 347  * and tries to make some sense of it, and
 348  * stores our page contents and config storage
 349  * and anything else that might need to be passed around
 350  * before we spit the page out.
 351  *
 352  */
 353
 354 if(! class_exists('App')) {
 355         class App {
 356
 357                 public  $module_loaded = false;
 358                 public  $query_string;
 359                 public  $config;
 360                 public  $page;
 361                 public  $profile;
 362                 public  $profile_uid;
 363                 public  $user;
 364                 public  $cid;
 365                 public  $contact;
 366                 public  $contacts;
 367                 public  $page_contact;
 368                 public  $content;
 369                 public  $data = array();
 370                 public  $error = false;
 371                 public  $cmd;
 372                 public  $argv;
 373                 public  $argc;
 374                 public  $module;
 375                 public  $pager;
 376                 public  $strings;
 377                 public  $path;
 378                 public  $hooks;
 379                 public  $timezone;
 380                 public  $interactive = true;
 381                 public  $plugins;
 382                 public  $apps = array();
 383                 public  $identities;
 384                 public  $is_mobile;
 385                 public  $is_tablet;
 386                 public  $is_friendica_app;
 387                 public  $performance = array();
 388
 389                 public $nav_sel;
 390
 391                 public $category;
 392
 393
 394                 // Allow themes to control internal parameters
 395                 // by changing App values in theme.php
 396
 397                 public  $sourcename = '';
 398                 public  $videowidth = 425;
 399                 public  $videoheight = 350;
 400                 public  $force_max_items = 0;
 401                 public  $theme_thread_allow = true;
 402
 403                 // An array for all theme-controllable parameters
 404                 // Mostly unimplemented yet. Only options 'stylesheet' and
 405                 // beyond are used.
 406
 407                 public  $theme = array(
 408                         'sourcename' => '',
 409                         'videowidth' => 425,
 410                         'videoheight' => 350,
 411                         'force_max_items' => 0,
 412                         'thread_allow' => true,
 413                         'stylesheet' => '',
 414                         'template_engine' => 'smarty3',
 415                 );
 416
 417                 // array of registered template engines ('name'=>'class name')
 418                 public $template_engines = array();
 419                 // array of instanced template engines ('name'=>'instance')
 420                 public $template_engine_instance = array();
 421
 422                 private $ldelim = array(
 423                         'internal' => '',
 424                         'smarty3' => '{{'
 425                 );
 426                 private $rdelim = array(
 427                         'internal' => '',
 428                         'smarty3' => '}}'
 429                 );
 430
 431                 private $scheme;
 432                 private $hostname;
 433                 private $baseurl;
 434                 private $db;
 435
 436                 private $curl_code;
 437                 private $curl_content_type;
 438                 private $curl_headers;
 439
 440                 private $cached_profile_image;
 441                 private $cached_profile_picdate;
 442
 443                 function __construct() {
 444
 445                         global $default_timezone;
 446
 447                         $hostname = "";
 448
 449                         if (file_exists(".htpreconfig.php"))
 450                                 @include(".htpreconfig.php");
 451
 452                         $this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
 453
 454                         date_default_timezone_set($this->timezone);
 455
 456                         $this->performance["start"] = microtime(true);
 457                         $this->performance["database"] = 0;
 458                         $this->performance["network"] = 0;
 459                         $this->performance["file"] = 0;
 460                         $this->performance["rendering"] = 0;
 461                         $this->performance["parser"] = 0;
 462                         $this->performance["marktime"] = 0;
 463                         $this->performance["markstart"] = microtime(true);
 464
 465                         $this->config = array();
 466                         $this->page = array();
 467                         $this->pager= array();
 468
 469                         $this->query_string = '';
 470
 471                         startup();
 472
 473                         set_include_path(
 474                                         'include' . PATH_SEPARATOR
 475                                         . 'library' . PATH_SEPARATOR
 476                                         . 'library/phpsec' . PATH_SEPARATOR
 477                                         . 'library/langdet' . PATH_SEPARATOR
 478                                         . '.' );
 479
 480
 481                         $this->scheme = 'http';
 482                         if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
 483                                 $this->scheme = 'https';
 484                         elseif(x($_SERVER,'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443))
 485                                 $this->scheme = 'https';
 486
 487                         if(x($_SERVER,'SERVER_NAME')) {
 488                                 $this->hostname = $_SERVER['SERVER_NAME'];
 489
 490                                 // See bug 437 - this didn't work so disabling it
 491                                 //if(stristr($this->hostname,'xn--')) {
 492                                         // PHP or webserver may have converted idn to punycode, so
 493                                         // convert punycode back to utf-8
 494                                 //      require_once('library/simplepie/idn/idna_convert.class.php');
 495                                 //      $x = new idna_convert();
 496                                 //      $this->hostname = $x->decode($_SERVER['SERVER_NAME']);
 497                                 //}
 498
 499                                 if(x($_SERVER,'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443)
 500                                         $this->hostname .= ':' . $_SERVER['SERVER_PORT'];
 501                                 /**
 502                                  * Figure out if we are running at the top of a domain
 503                                  * or in a sub-directory and adjust accordingly
 504                                  */
 505
 506                                 $path = trim(dirname($_SERVER['SCRIPT_NAME']),'/\\');
 507                                 if(isset($path) && strlen($path) && ($path != $this->path))
 508                                         $this->path = $path;
 509                         }
 510
 511                         if ($hostname != "")
 512                                 $this->hostname = $hostname;
 513
 514                         if (is_array($_SERVER["argv"]) && $_SERVER["argc"]>1 && substr(end($_SERVER["argv"]), 0, 4)=="http" ) {
 515                                 $this->set_baseurl(array_pop($_SERVER["argv"]) );
 516                                 $_SERVER["argc"] --;
 517                         }
 518
 519                         #set_include_path("include/$this->hostname" . PATH_SEPARATOR . get_include_path());
 520
 521                         if((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,9) === "pagename=") {
 522                                 $this->query_string = substr($_SERVER['QUERY_STRING'],9);
 523                                 // removing trailing / - maybe a nginx problem
 524                                 if (substr($this->query_string, 0, 1) == "/")
 525                                         $this->query_string = substr($this->query_string, 1);
 526                         } elseif((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,2) === "q=") {
 527                                 $this->query_string = substr($_SERVER['QUERY_STRING'],2);
 528                                 // removing trailing / - maybe a nginx problem
 529                                 if (substr($this->query_string, 0, 1) == "/")
 530                                         $this->query_string = substr($this->query_string, 1);
 531                         }
 532
 533                         if (x($_GET,'pagename'))
 534                                 $this->cmd = trim($_GET['pagename'],'/\\');
 535                         elseif (x($_GET,'q'))
 536                                 $this->cmd = trim($_GET['q'],'/\\');
 537
 538
 539                         // fix query_string
 540                         $this->query_string = str_replace($this->cmd."&",$this->cmd."?", $this->query_string);
 541
 542
 543                         // unix style "homedir"
 544
 545                         if(substr($this->cmd,0,1) === '~')
 546                                 $this->cmd = 'profile/' . substr($this->cmd,1);
 547
 548                         // Diaspora style profile url
 549
 550                         if(substr($this->cmd,0,2) === 'u/')
 551                                 $this->cmd = 'profile/' . substr($this->cmd,2);
 552
 553
 554                         /**
 555                          *
 556                          * Break the URL path into C style argc/argv style arguments for our
 557                          * modules. Given "http://example.com/module/arg1/arg2", $this->argc
 558                          * will be 3 (integer) and $this->argv will contain:
 559                          *   [0] => 'module'
 560                          *   [1] => 'arg1'
 561                          *   [2] => 'arg2'
 562                          *
 563                          *
 564                          * There will always be one argument. If provided a naked domain
 565                          * URL, $this->argv[0] is set to "home".
 566                          *
 567                          */
 568
 569                         $this->argv = explode('/',$this->cmd);
 570                         $this->argc = count($this->argv);
 571                         if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
 572                                 $this->module = str_replace(".", "_", $this->argv[0]);
 573                                 $this->module = str_replace("-", "_", $this->module);
 574                         }
 575                         else {
 576                                 $this->argc = 1;
 577                                 $this->argv = array('home');
 578                                 $this->module = 'home';
 579                         }
 580
 581                         /**
 582                          * See if there is any page number information, and initialise
 583                          * pagination
 584                          */
 585
 586                         $this->pager['page'] = ((x($_GET,'page') && intval($_GET['page']) > 0) ? intval($_GET['page']) : 1);
 587                         $this->pager['itemspage'] = 50;
 588                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 589                         if($this->pager['start'] < 0)
 590                                 $this->pager['start'] = 0;
 591                         $this->pager['total'] = 0;
 592
 593                         /**
 594                          * Detect mobile devices
 595                          */
 596
 597                         $mobile_detect = new Mobile_Detect();
 598                         $this->is_mobile = $mobile_detect->isMobile();
 599                         $this->is_tablet = $mobile_detect->isTablet();
 600
 601                         // Friendica-Client
 602                         $this->is_friendica_app = ($_SERVER['HTTP_USER_AGENT'] == "Apache-HttpClient/UNAVAILABLE (java 1.4)");
 603
 604                         /**
 605                          * register template engines
 606                          */
 607                         $dc = get_declared_classes();
 608                         foreach ($dc as $k) {
 609                                 if (in_array("ITemplateEngine", class_implements($k))){
 610                                         $this->register_template_engine($k);
 611                                 }
 612                         }
 613
 614                 }
 615
 616                 function get_basepath() {
 617
 618                         $basepath = get_config("system", "basepath");
 619
 620                         if ($basepath == "")
 621                                 $basepath = $_SERVER["DOCUMENT_ROOT"];
 622
 623                         if ($basepath == "")
 624                                 $basepath = $_SERVER["PWD"];
 625
 626                         return($basepath);
 627                 }
 628
 629                 function get_scheme() {
 630                         return($this->scheme);
 631                 }
 632
 633                 function get_baseurl($ssl = false) {
 634
 635                         $scheme = $this->scheme;
 636
 637                         if((x($this->config,'system')) && (x($this->config['system'],'ssl_policy'))) {
 638                                 if(intval($this->config['system']['ssl_policy']) === intval(SSL_POLICY_FULL))
 639                                         $scheme = 'https';
 640
 641                                 //      Basically, we have $ssl = true on any links which can only be seen by a logged in user
 642                                 //      (and also the login link). Anything seen by an outsider will have it turned off.
 643
 644                                 if($this->config['system']['ssl_policy'] == SSL_POLICY_SELFSIGN) {
 645                                         if($ssl)
 646                                                 $scheme = 'https';
 647                                         else
 648                                                 $scheme = 'http';
 649                                 }
 650                         }
 651
 652                         if (get_config('config','hostname') != "")
 653                                 $this->hostname = get_config('config','hostname');
 654
 655                         $this->baseurl = $scheme . "://" . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
 656                         return $this->baseurl;
 657                 }
 658
 659                 function set_baseurl($url) {
 660                         $parsed = @parse_url($url);
 661
 662                         $this->baseurl = $url;
 663
 664                         if($parsed) {
 665                                 $this->scheme = $parsed['scheme'];
 666
 667                                 $hostname = $parsed['host'];
 668                                 if(x($parsed,'port'))
 669                                         $hostname .= ':' . $parsed['port'];
 670                                 if(x($parsed,'path'))
 671                                         $this->path = trim($parsed['path'],'\\/');
 672
 673                                 if (file_exists(".htpreconfig.php"))
 674                                         @include(".htpreconfig.php");
 675
 676                                 if (get_config('config','hostname') != "")
 677                                         $this->hostname = get_config('config','hostname');
 678
 679                                 if (!isset($this->hostname) OR ($this->hostname == ""))
 680                                         $this->hostname = $hostname;
 681                         }
 682
 683                 }
 684
 685                 function get_hostname() {
 686                         if (get_config('config','hostname') != "")
 687                                 $this->hostname = get_config('config','hostname');
 688
 689                         return $this->hostname;
 690                 }
 691
 692                 function set_hostname($h) {
 693                         $this->hostname = $h;
 694                 }
 695
 696                 function set_path($p) {
 697                         $this->path = trim(trim($p),'/');
 698                 }
 699
 700                 function get_path() {
 701                         return $this->path;
 702                 }
 703
 704                 function set_pager_total($n) {
 705                         $this->pager['total'] = intval($n);
 706                 }
 707
 708                 function set_pager_itemspage($n) {
 709                         $this->pager['itemspage'] = ((intval($n) > 0) ? intval($n) : 0);
 710                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 711                 }
 712
 713                 function set_pager_page($n) {
 714                         $this->pager['page'] = $n;
 715                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 716                 }
 717
 718                 function init_pagehead() {
 719                         $interval = ((local_user()) ? get_pconfig(local_user(),'system','update_interval') : 40000);
 720                         if($interval < 10000)
 721                                 $interval = 40000;
 722
 723                         $this->page['title'] = $this->config['sitename'];
 724
 725                         /* put the head template at the beginning of page['htmlhead']
 726                          * since the code added by the modules frequently depends on it
 727                          * being first
 728                          */
 729                         if(!isset($this->page['htmlhead']))
 730                                 $this->page['htmlhead'] = '';
 731
 732                         // If we're using Smarty, then doing replace_macros() will replace
 733                         // any unrecognized variables with a blank string. Since we delay
 734                         // replacing $stylesheet until later, we need to replace it now
 735                         // with another variable name
 736                         if($this->theme['template_engine'] === 'smarty3')
 737                                 $stylesheet = $this->get_template_ldelim('smarty3') . '$stylesheet' . $this->get_template_rdelim('smarty3');
 738                         else
 739                                 $stylesheet = '$stylesheet';
 740
 741                         $shortcut_icon = get_config("system", "shortcut_icon");
 742                         if ($shortcut_icon == "")
 743                                 $shortcut_icon = $this->get_baseurl()."/images/friendica-32.png";
 744
 745                         $touch_icon = get_config("system", "touch_icon");
 746                         if ($touch_icon == "")
 747                                 $touch_icon = $this->get_baseurl()."/images/friendica-128.png";
 748
 749                         $tpl = get_markup_template('head.tpl');
 750                         $this->page['htmlhead'] = replace_macros($tpl,array(
 751                                 '$baseurl' => $this->get_baseurl(), // FIXME for z_path!!!!
 752                                 '$local_user' => local_user(),
 753                                 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
 754                                 '$delitem' => t('Delete this item?'),
 755                                 '$comment' => t('Comment'),
 756                                 '$showmore' => t('show more'),
 757                                 '$showfewer' => t('show fewer'),
 758                                 '$update_interval' => $interval,
 759                                 '$shortcut_icon' => $shortcut_icon,
 760                                 '$touch_icon' => $touch_icon,
 761                                 '$stylesheet' => $stylesheet
 762                         )) . $this->page['htmlhead'];
 763                 }
 764
 765                 function init_page_end() {
 766                         if(!isset($this->page['end']))
 767                                 $this->page['end'] = '';
 768                         $tpl = get_markup_template('end.tpl');
 769                         $this->page['end'] = replace_macros($tpl,array(
 770                                 '$baseurl' => $this->get_baseurl() // FIXME for z_path!!!!
 771                         )) . $this->page['end'];
 772                 }
 773
 774                 function set_curl_code($code) {
 775                         $this->curl_code = $code;
 776                 }
 777
 778                 function get_curl_code() {
 779                         return $this->curl_code;
 780                 }
 781
 782                 function set_curl_content_type($content_type) {
 783                         $this->curl_content_type = $content_type;
 784                 }
 785
 786                 function get_curl_content_type() {
 787                         return $this->curl_content_type;
 788                 }
 789
 790                 function set_curl_headers($headers) {
 791                         $this->curl_headers = $headers;
 792                 }
 793
 794                 function get_curl_headers() {
 795                         return $this->curl_headers;
 796                 }
 797
 798                 function get_cached_avatar_image($avatar_image){
 799                         if($this->cached_profile_image[$avatar_image])
 800                                 return $this->cached_profile_image[$avatar_image];
 801
 802                         $path_parts = explode("/",$avatar_image);
 803                         $common_filename = $path_parts[count($path_parts)-1];
 804
 805                         if($this->cached_profile_picdate[$common_filename]){
 806                                 $this->cached_profile_image[$avatar_image] = $avatar_image . $this->cached_profile_picdate[$common_filename];
 807                         } else {
 808                                 $r = q("SELECT `contact`.`avatar-date` AS picdate FROM `contact` WHERE `contact`.`thumb` like '%%/%s'",
 809                                         $common_filename);
 810                                 if(! count($r)){
 811                                         $this->cached_profile_image[$avatar_image] = $avatar_image;
 812                                 } else {
 813                                         $this->cached_profile_picdate[$common_filename] = "?rev=".urlencode($r[0]['picdate']);
 814                                         $this->cached_profile_image[$avatar_image] = $avatar_image.$this->cached_profile_picdate[$common_filename];
 815                                 }
 816                         }
 817                         return $this->cached_profile_image[$avatar_image];
 818                 }
 819
 820
 821                 /**
 822                  * register template engine class
 823                  * if $name is "", is used class static property $class::$name
 824                  * @param string $class
 825                  * @param string $name
 826                  */
 827                 function register_template_engine($class, $name = '') {
 828                         if ($name===""){
 829                                 $v = get_class_vars( $class );
 830                                 if(x($v,"name")) $name = $v['name'];
 831                         }
 832                         if ($name===""){
 833                                 echo "template engine <tt>$class</tt> cannot be registered without a name.\n";
 834                                 killme();
 835                         }
 836                         $this->template_engines[$name] = $class;
 837                 }
 838
 839                 /**
 840                  * return template engine instance. If $name is not defined,
 841                  * return engine defined by theme, or default
 842                  *
 843                  * @param strin $name Template engine name
 844                  * @return object Template Engine instance
 845                  */
 846                 function template_engine($name = ''){
 847                         if ($name!=="") {
 848                                 $template_engine = $name;
 849                         } else {
 850                                 $template_engine = 'smarty3';
 851                                 if (x($this->theme, 'template_engine')) {
 852                                         $template_engine = $this->theme['template_engine'];
 853                                 }
 854                         }
 855
 856                         if (isset($this->template_engines[$template_engine])){
 857                                 if(isset($this->template_engine_instance[$template_engine])){
 858                                         return $this->template_engine_instance[$template_engine];
 859                                 } else {
 860                                         $class = $this->template_engines[$template_engine];
 861                                         $obj = new $class;
 862                                         $this->template_engine_instance[$template_engine] = $obj;
 863                                         return $obj;
 864                                 }
 865                         }
 866
 867                         echo "template engine <tt>$template_engine</tt> is not registered!\n"; killme();
 868                 }
 869
 870                 function get_template_engine() {
 871                         return $this->theme['template_engine'];
 872                 }
 873
 874                 function set_template_engine($engine = 'smarty3') {
 875                         $this->theme['template_engine'] = $engine;
 876                         /*
 877                         $this->theme['template_engine'] = 'smarty3';
 878
 879                         switch($engine) {
 880                                 case 'smarty3':
 881                                         if(is_writable('view/smarty3/'))
 882                                                 $this->theme['template_engine'] = 'smarty3';
 883                                         break;
 884                                 default:
 885                                         break;
 886                         }
 887                         */
 888                 }
 889
 890                 function get_template_ldelim($engine = 'smarty3') {
 891                         return $this->ldelim[$engine];
 892                 }
 893
 894                 function get_template_rdelim($engine = 'smarty3') {
 895                         return $this->rdelim[$engine];
 896                 }
 897
 898                 function save_timestamp($stamp, $value) {
 899                         $duration = (float)(microtime(true)-$stamp);
 900
 901                         $this->performance[$value] += (float)$duration;
 902                         $this->performance["marktime"] += (float)$duration;
 903                 }
 904
 905                 function mark_timestamp($mark) {
 906                         //$this->performance["markstart"] -= microtime(true) - $this->performance["marktime"];
 907                         $this->performance["markstart"] = microtime(true) - $this->performance["markstart"] - $this->performance["marktime"];
 908                 }
 909
 910                 function get_useragent() {
 911                         return(FRIENDICA_PLATFORM." '".FRIENDICA_CODENAME."' ".FRIENDICA_VERSION."-".DB_UPDATE_VERSION."; ".$this->get_baseurl());
 912                 }
 913
 914                 function is_friendica_app() {
 915                         return($this->is_friendica_app);
 916                 }
 917
 918         }
 919 }
 920
 921 // retrieve the App structure
 922 // useful in functions which require it but don't get it passed to them
 923
 924 if(! function_exists('get_app')) {
 925         function get_app() {
 926                 global $a;
 927                 return $a;
 928         }
 929 };
 930
 931
 932 // Multi-purpose function to check variable state.
 933 // Usage: x($var) or $x($array,'key')
 934 // returns false if variable/key is not set
 935 // if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
 936 // e.g. x('') or x(0) returns 0;
 937
 938 if(! function_exists('x')) {
 939         function x($s,$k = NULL) {
 940                 if($k != NULL) {
 941                         if((is_array($s)) && (array_key_exists($k,$s))) {
 942                                 if($s[$k])
 943                                         return (int) 1;
 944                                 return (int) 0;
 945                 }
 946                         return false;
 947                 }
 948                 else {
 949                         if(isset($s)) {
 950                                 if($s) {
 951                                         return (int) 1;
 952                                 }
 953                                 return (int) 0;
 954                         }
 955                         return false;
 956                 }
 957         }
 958 }
 959
 960 // called from db initialisation if db is dead.
 961
 962 if(! function_exists('system_unavailable')) {
 963         function system_unavailable() {
 964                 include('system_unavailable.php');
 965                 system_down();
 966                 killme();
 967         }
 968 }
 969
 970
 971
 972 function clean_urls() {
 973         global $a;
 974         //      if($a->config['system']['clean_urls'])
 975         return true;
 976         //      return false;
 977 }
 978
 979 function z_path() {
 980         global $a;
 981         $base = $a->get_baseurl();
 982         if(! clean_urls())
 983                 $base .= '/?q=';
 984         return $base;
 985 }
 986
 987 function z_root() {
 988         global $a;
 989         return $a->get_baseurl();
 990 }
 991
 992 function absurl($path) {
 993         if(strpos($path,'/') === 0)
 994                 return z_path() . $path;
 995         return $path;
 996 }
 997
 998 function is_ajax() {
 999         return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
1000 }
1001
1002 function check_db() {
1003
1004         $build = get_config('system','build');
1005         if(! x($build)) {
1006                 set_config('system','build',DB_UPDATE_VERSION);
1007                 $build = DB_UPDATE_VERSION;
1008         }
1009         if($build != DB_UPDATE_VERSION)
1010                 proc_run('php', 'include/dbupdate.php');
1011
1012 }
1013
1014
1015
1016
1017 // Sets the base url for use in cmdline programs which don't have
1018 // $_SERVER variables
1019
1020 if(! function_exists('check_url')) {
1021         function check_url(&$a) {
1022
1023                 $url = get_config('system','url');
1024
1025                 // if the url isn't set or the stored url is radically different
1026                 // than the currently visited url, store the current value accordingly.
1027                 // "Radically different" ignores common variations such as http vs https
1028                 // and www.example.com vs example.com.
1029                 // We will only change the url to an ip address if there is no existing setting
1030
1031                 if(! x($url))
1032                         $url = set_config('system','url',$a->get_baseurl());
1033                 if((! link_compare($url,$a->get_baseurl())) && (! preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/",$a->get_hostname)))
1034                         $url = set_config('system','url',$a->get_baseurl());
1035
1036                 return;
1037         }
1038 }
1039
1040
1041 // Automatic database updates
1042
1043 if(! function_exists('update_db')) {
1044         function update_db(&$a) {
1045                 $build = get_config('system','build');
1046                 if(! x($build))
1047                         $build = set_config('system','build',DB_UPDATE_VERSION);
1048
1049                 if($build != DB_UPDATE_VERSION) {
1050                         $stored = intval($build);
1051                         $current = intval(DB_UPDATE_VERSION);
1052                         if($stored < $current) {
1053                                 load_config('database');
1054
1055                                 // We're reporting a different version than what is currently installed.
1056                                 // Run any existing update scripts to bring the database up to current.
1057
1058                                 // make sure that boot.php and update.php are the same release, we might be
1059                                 // updating right this very second and the correct version of the update.php
1060                                 // file may not be here yet. This can happen on a very busy site.
1061
1062                                 if(DB_UPDATE_VERSION == UPDATE_VERSION) {
1063                                         // Compare the current structure with the defined structure
1064
1065                                         $t = get_config('database','dbupdate_'.DB_UPDATE_VERSION);
1066                                         if($t !== false)
1067                                                 return;
1068
1069                                         set_config('database','dbupdate_'.DB_UPDATE_VERSION, time());
1070
1071                                         // run old update routine (wich could modify the schema and
1072                                         // conflits with new routine)
1073                                         for ($x = $stored; $x < NEW_UPDATE_ROUTINE_VERSION; $x++) {
1074                                                 $r = run_update_function($x);
1075                                                 if (!$r) break;
1076                                         }
1077                                         if ($stored < NEW_UPDATE_ROUTINE_VERSION) $stored = NEW_UPDATE_ROUTINE_VERSION;
1078
1079
1080                                         // run new update routine
1081                                         // it update the structure in one call
1082                                         $retval = update_structure(false, true);
1083                                         if($retval) {
1084                                                 update_fail(
1085                                                         DB_UPDATE_VERSION,
1086                                                         $retval
1087                                                 );
1088                                                 return;
1089                                         } else {
1090                                                 set_config('database','dbupdate_'.DB_UPDATE_VERSION, 'success');
1091                                         }
1092
1093                                         // run any left update_nnnn functions in update.php
1094                                         for($x = $stored; $x < $current; $x ++) {
1095                                                 $r = run_update_function($x);
1096                                                 if (!$r) break;
1097                                         }
1098                                 }
1099                         }
1100                 }
1101
1102                 return;
1103         }
1104 }
1105 if(!function_exists('run_update_function')){
1106         function run_update_function($x) {
1107                 if(function_exists('update_' . $x)) {
1108
1109                         // There could be a lot of processes running or about to run.
1110                         // We want exactly one process to run the update command.
1111                         // So store the fact that we're taking responsibility
1112                         // after first checking to see if somebody else already has.
1113
1114                         // If the update fails or times-out completely you may need to
1115                         // delete the config entry to try again.
1116
1117                         $t = get_config('database','update_' . $x);
1118                         if($t !== false)
1119                                 return false;
1120                         set_config('database','update_' . $x, time());
1121
1122                         // call the specific update
1123
1124                         $func = 'update_' . $x;
1125                         $retval = $func();
1126
1127                         if($retval) {
1128                                 //send the administrator an e-mail
1129                                 update_fail(
1130                                         $x,
1131                                         sprintf(t('Update %s failed. See error logs.'), $x)
1132                                 );
1133                                 return false;
1134                         } else {
1135                                 set_config('database','update_' . $x, 'success');
1136                                 set_config('system','build', $x + 1);
1137                                 return true;
1138                         }
1139                 } else {
1140                         set_config('database','update_' . $x, 'success');
1141                         set_config('system','build', $x + 1);
1142                         return true;
1143                 }
1144                 return true;
1145         }
1146 }
1147
1148
1149 if(! function_exists('check_plugins')) {
1150         function check_plugins(&$a) {
1151
1152                 /**
1153                  *
1154                  * Synchronise plugins:
1155                  *
1156                  * $a->config['system']['addon'] contains a comma-separated list of names
1157                  * of plugins/addons which are used on this system.
1158                  * Go through the database list of already installed addons, and if we have
1159                  * an entry, but it isn't in the config list, call the uninstall procedure
1160                  * and mark it uninstalled in the database (for now we'll remove it).
1161                  * Then go through the config list and if we have a plugin that isn't installed,
1162                  * call the install procedure and add it to the database.
1163                  *
1164                  */
1165
1166                 $r = q("SELECT * FROM `addon` WHERE `installed` = 1");
1167                 if(count($r))
1168                         $installed = $r;
1169                 else
1170                         $installed = array();
1171
1172                 $plugins = get_config('system','addon');
1173                 $plugins_arr = array();
1174
1175                 if($plugins)
1176                         $plugins_arr = explode(',',str_replace(' ', '',$plugins));
1177
1178                 $a->plugins = $plugins_arr;
1179
1180                 $installed_arr = array();
1181
1182                 if(count($installed)) {
1183                         foreach($installed as $i) {
1184                                 if(! in_array($i['name'],$plugins_arr)) {
1185                                         uninstall_plugin($i['name']);
1186                                 }
1187                                 else {
1188                                         $installed_arr[] = $i['name'];
1189                                 }
1190                         }
1191                 }
1192
1193                 if(count($plugins_arr)) {
1194                         foreach($plugins_arr as $p) {
1195                                 if(! in_array($p,$installed_arr)) {
1196                                         install_plugin($p);
1197                                 }
1198                         }
1199                 }
1200
1201
1202                 load_hooks();
1203
1204                 return;
1205         }
1206 }
1207
1208 function get_guid($size=16, $prefix = "") {
1209
1210         if ($prefix == "") {
1211                 $a = get_app();
1212                 $prefix = hash("crc32", $a->get_hostname());
1213         }
1214
1215         while (strlen($prefix) < ($size - 13))
1216                 $prefix .= mt_rand();
1217
1218         if ($size >= 24) {
1219                 $prefix = substr($prefix, 0, $size - 22);
1220                 return(str_replace(".", "", uniqid($prefix, true)));
1221         } else {
1222                 $prefix = substr($prefix, 0, $size - 13);
1223                 return(uniqid($prefix));
1224         }
1225 }
1226
1227 // wrapper for adding a login box. If $register == true provide a registration
1228 // link. This will most always depend on the value of $a->config['register_policy'].
1229 // returns the complete html for inserting into the page
1230
1231 if(! function_exists('login')) {
1232         function login($register = false, $hiddens=false) {
1233                 $a = get_app();
1234                 $o = "";
1235                 $reg = false;
1236                 if ($register) {
1237                         $reg = array(
1238                                 'title' => t('Create a New Account'),
1239                                 'desc' => t('Register')
1240                         );
1241                 }
1242
1243                 $noid = get_config('system','no_openid');
1244
1245                 $dest_url = $a->get_baseurl(true) . '/' . $a->query_string;
1246
1247                 if(local_user()) {
1248                         $tpl = get_markup_template("logout.tpl");
1249                 }
1250                 else {
1251                         $a->page['htmlhead'] .= replace_macros(get_markup_template("login_head.tpl"),array(
1252                                 '$baseurl'              => $a->get_baseurl(true)
1253                         ));
1254
1255                         $tpl = get_markup_template("login.tpl");
1256                         $_SESSION['return_url'] = $a->query_string;
1257                         $a->module = 'login';
1258                 }
1259
1260                 $o .= replace_macros($tpl, array(
1261
1262                         '$dest_url'     => $dest_url,
1263                         '$logout'       => t('Logout'),
1264                         '$login'        => t('Login'),
1265
1266                         '$lname'                => array('username', t('Nickname or Email address: ') , '', ''),
1267                         '$lpassword'    => array('password', t('Password: '), '', ''),
1268                         '$lremember'    => array('remember', t('Remember me'), 0,  ''),
1269
1270                         '$openid'               => !$noid,
1271                         '$lopenid'      => array('openid_url', t('Or login using OpenID: '),'',''),
1272
1273                         '$hiddens'      => $hiddens,
1274
1275                         '$register'     => $reg,
1276
1277                         '$lostpass'     => t('Forgot your password?'),
1278                         '$lostlink'     => t('Password Reset'),
1279
1280                         '$tostitle'     => t('Website Terms of Service'),
1281                         '$toslink'      => t('terms of service'),
1282
1283                         '$privacytitle' => t('Website Privacy Policy'),
1284                         '$privacylink'  => t('privacy policy'),
1285
1286                 ));
1287
1288                 call_hooks('login_hook',$o);
1289
1290                 return $o;
1291         }
1292 }
1293
1294 // Used to end the current process, after saving session state.
1295
1296 if(! function_exists('killme')) {
1297         function killme() {
1298                 session_write_close();
1299                 exit;
1300         }
1301 }
1302
1303 // redirect to another URL and terminate this process.
1304
1305 if(! function_exists('goaway')) {
1306         function goaway($s) {
1307                 header("Location: $s");
1308                 killme();
1309         }
1310 }
1311
1312
1313 // Returns the uid of locally logged in user or false.
1314
1315 if(! function_exists('local_user')) {
1316         function local_user() {
1317                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
1318                         return intval($_SESSION['uid']);
1319                 return false;
1320         }
1321 }
1322
1323 // Returns contact id of authenticated site visitor or false
1324
1325 if(! function_exists('remote_user')) {
1326         function remote_user() {
1327                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'visitor_id')))
1328                         return intval($_SESSION['visitor_id']);
1329                 return false;
1330         }
1331 }
1332
1333 // contents of $s are displayed prominently on the page the next time
1334 // a page is loaded. Usually used for errors or alerts.
1335
1336 if(! function_exists('notice')) {
1337         /**
1338          * Show an error message to user.
1339          *
1340          * This function save text in session, to be shown to the user at next page load
1341          *
1342          * @param string $s - Text of notice
1343          */
1344         function notice($s) {
1345                 $a = get_app();
1346                 if(! x($_SESSION,'sysmsg'))     $_SESSION['sysmsg'] = array();
1347                 if($a->interactive)
1348                         $_SESSION['sysmsg'][] = $s;
1349         }
1350 }
1351 if(! function_exists('info')) {
1352         /**
1353          * Show an info message to user.
1354          *
1355          * This function save text in session, to be shown to the user at next page load
1356          *
1357          * @param string $s - Text of notice
1358          */
1359         function info($s) {
1360                 $a = get_app();
1361
1362                 if (local_user() AND get_pconfig(local_user(),'system','ignore_info'))
1363                         return;
1364
1365                 if(! x($_SESSION,'sysmsg_info')) $_SESSION['sysmsg_info'] = array();
1366                 if($a->interactive)
1367                         $_SESSION['sysmsg_info'][] = $s;
1368         }
1369 }
1370
1371
1372 // wrapper around config to limit the text length of an incoming message
1373
1374 if(! function_exists('get_max_import_size')) {
1375         function get_max_import_size() {
1376                 global $a;
1377                 return ((x($a->config,'max_import_size')) ? $a->config['max_import_size'] : 0 );
1378         }
1379 }
1380
1381 /**
1382  *
1383  * Wrap calls to proc_close(proc_open()) and call hook
1384  * so plugins can take part in process :)
1385  *
1386  * args:
1387  * $cmd program to run
1388  *  next args are passed as $cmd command line
1389  *
1390  * e.g.: proc_run("ls","-la","/tmp");
1391  *
1392  * $cmd and string args are surrounded with ""
1393  */
1394
1395 if(! function_exists('proc_run')) {
1396         function proc_run($cmd){
1397
1398                 $a = get_app();
1399
1400                 $args = func_get_args();
1401
1402                 $newargs = array();
1403                 if(! count($args))
1404                         return;
1405
1406                 // expand any arrays
1407
1408                 foreach($args as $arg) {
1409                         if(is_array($arg)) {
1410                                 foreach($arg as $n) {
1411                                         $newargs[] = $n;
1412                                 }
1413                         }
1414                         else
1415                                 $newargs[] = $arg;
1416                 }
1417
1418                 $args = $newargs;
1419
1420                 $arr = array('args' => $args, 'run_cmd' => true);
1421
1422                 call_hooks("proc_run", $arr);
1423                 if(! $arr['run_cmd'])
1424                         return;
1425
1426                 if(count($args) && $args[0] === 'php')
1427                         $args[0] = ((x($a->config,'php_path')) && (strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
1428
1429                 // add baseurl to args. cli scripts can't construct it
1430                 $args[] = $a->get_baseurl();
1431
1432                 for($x = 0; $x < count($args); $x ++)
1433                         $args[$x] = escapeshellarg($args[$x]);
1434
1435
1436
1437                 $cmdline = implode($args," ");
1438                 if(get_config('system','proc_windows'))
1439                         proc_close(proc_open('cmd /c start /b ' . $cmdline,array(),$foo,dirname(__FILE__)));
1440                 else
1441                         proc_close(proc_open($cmdline." &",array(),$foo,dirname(__FILE__)));
1442         }
1443 }
1444
1445 if(! function_exists('current_theme')) {
1446         function current_theme(){
1447                 $app_base_themes = array('duepuntozero', 'dispy', 'quattro');
1448
1449                 $a = get_app();
1450
1451                 $page_theme = null;
1452
1453                 // Find the theme that belongs to the user whose stuff we are looking at
1454
1455                 if($a->profile_uid && ($a->profile_uid != local_user())) {
1456                         $r = q("select theme from user where uid = %d limit 1",
1457                                 intval($a->profile_uid)
1458                         );
1459                         if($r)
1460                                 $page_theme = $r[0]['theme'];
1461                 }
1462
1463                 // Allow folks to over-rule user themes and always use their own on their own site.
1464                 // This works only if the user is on the same server
1465
1466                 if($page_theme && local_user() && (local_user() != $a->profile_uid)) {
1467                         if(get_pconfig(local_user(),'system','always_my_theme'))
1468                                 $page_theme = null;
1469                 }
1470
1471 //              $mobile_detect = new Mobile_Detect();
1472 //              $is_mobile = $mobile_detect->isMobile() || $mobile_detect->isTablet();
1473                 $is_mobile = $a->is_mobile || $a->is_tablet;
1474
1475                 $standard_system_theme = ((isset($a->config['system']['theme'])) ? $a->config['system']['theme'] : '');
1476                 $standard_theme_name = ((isset($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $standard_system_theme);
1477
1478                 if($is_mobile) {
1479                         if(isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
1480                                 $system_theme = $standard_system_theme;
1481                                 $theme_name = $standard_theme_name;
1482                         }
1483                         else {
1484                                 $system_theme = ((isset($a->config['system']['mobile-theme'])) ? $a->config['system']['mobile-theme'] : $standard_system_theme);
1485                                 $theme_name = ((isset($_SESSION) && x($_SESSION,'mobile-theme')) ? $_SESSION['mobile-theme'] : $system_theme);
1486
1487                                 if($theme_name === '---') {
1488                                         // user has selected to have the mobile theme be the same as the normal one
1489                                         $system_theme = $standard_system_theme;
1490                                         $theme_name = $standard_theme_name;
1491
1492                                         if($page_theme)
1493                                                 $theme_name = $page_theme;
1494                                 }
1495                         }
1496                 }
1497                 else {
1498                         $system_theme = $standard_system_theme;
1499                         $theme_name = $standard_theme_name;
1500
1501                         if($page_theme)
1502                                 $theme_name = $page_theme;
1503                 }
1504
1505                 if($theme_name &&
1506                                 (file_exists('view/theme/' . $theme_name . '/style.css') ||
1507                                                 file_exists('view/theme/' . $theme_name . '/style.php')))
1508                         return($theme_name);
1509
1510                 foreach($app_base_themes as $t) {
1511                         if(file_exists('view/theme/' . $t . '/style.css')||
1512                                         file_exists('view/theme/' . $t . '/style.php'))
1513                                 return($t);
1514                 }
1515
1516                 $fallback = array_merge(glob('view/theme/*/style.css'),glob('view/theme/*/style.php'));
1517                 if(count($fallback))
1518                         return (str_replace('view/theme/','', substr($fallback[0],0,-10)));
1519
1520         }
1521 }
1522
1523 /*
1524  * Return full URL to theme which is currently in effect.
1525 * Provide a sane default if nothing is chosen or the specified theme does not exist.
1526 */
1527 if(! function_exists('current_theme_url')) {
1528         function current_theme_url() {
1529                 global $a;
1530
1531                 $t = current_theme();
1532
1533                 $opts = (($a->profile_uid) ? '?f=&puid=' . $a->profile_uid : '');
1534                 if (file_exists('view/theme/' . $t . '/style.php'))
1535                         return($a->get_baseurl() . '/view/theme/' . $t . '/style.pcss' . $opts);
1536
1537                 return($a->get_baseurl() . '/view/theme/' . $t . '/style.css');
1538         }
1539 }
1540
1541 if(! function_exists('feed_birthday')) {
1542         function feed_birthday($uid,$tz) {
1543
1544                 /**
1545                  *
1546                  * Determine the next birthday, but only if the birthday is published
1547                  * in the default profile. We _could_ also look for a private profile that the
1548                  * recipient can see, but somebody could get mad at us if they start getting
1549                  * public birthday greetings when they haven't made this info public.
1550                  *
1551                  * Assuming we are able to publish this info, we are then going to convert
1552                  * the start time from the owner's timezone to UTC.
1553                  *
1554                  * This will potentially solve the problem found with some social networks
1555                  * where birthdays are converted to the viewer's timezone and salutations from
1556                  * elsewhere in the world show up on the wrong day. We will convert it to the
1557                  * viewer's timezone also, but first we are going to convert it from the birthday
1558                  * person's timezone to GMT - so the viewer may find the birthday starting at
1559                  * 6:00PM the day before, but that will correspond to midnight to the birthday person.
1560                  *
1561                  */
1562
1563
1564                 $birthday = '';
1565
1566                 if(! strlen($tz))
1567                         $tz = 'UTC';
1568
1569                 $p = q("SELECT `dob` FROM `profile` WHERE `is-default` = 1 AND `uid` = %d LIMIT 1",
1570                                 intval($uid)
1571                 );
1572
1573                 if($p && count($p)) {
1574                         $tmp_dob = substr($p[0]['dob'],5);
1575                         if(intval($tmp_dob)) {
1576                                 $y = datetime_convert($tz,$tz,'now','Y');
1577                                 $bd = $y . '-' . $tmp_dob . ' 00:00';
1578                                 $t_dob = strtotime($bd);
1579                                 $now = strtotime(datetime_convert($tz,$tz,'now'));
1580                                 if($t_dob < $now)
1581                                         $bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
1582                                 $birthday = datetime_convert($tz,'UTC',$bd,ATOM_TIME);
1583                         }
1584                 }
1585
1586                 return $birthday;
1587         }
1588 }
1589
1590 if(! function_exists('is_site_admin')) {
1591         function is_site_admin() {
1592                 $a = get_app();
1593
1594                 $adminlist = explode(",", str_replace(" ", "", $a->config['admin_email']));
1595
1596                 //if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && ($a->user['email'] === $a->config['admin_email']))
1597                 if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && in_array($a->user['email'], $adminlist))
1598                         return true;
1599                 return false;
1600         }
1601 }
1602
1603
1604 if(! function_exists('load_contact_links')) {
1605         function load_contact_links($uid) {
1606
1607                 $a = get_app();
1608
1609                 $ret = array();
1610
1611                 if(! $uid || x($a->contacts,'empty'))
1612                         return;
1613
1614                 $r = q("SELECT `id`,`network`,`url`,`thumb` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 AND `thumb` != ''",
1615                                 intval($uid)
1616                 );
1617                 if(count($r)) {
1618                         foreach($r as $rr){
1619                                 $url = normalise_link($rr['url']);
1620                                 $ret[$url] = $rr;
1621                         }
1622                 }
1623                 else
1624                         $ret['empty'] = true;
1625                 $a->contacts = $ret;
1626                 return;
1627         }
1628 }
1629
1630 /**
1631 * returns querystring as string from a mapped array
1632 *
1633 * @param params Array
1634 * @return string
1635 */
1636 function build_querystring($params, $name=null) {
1637     $ret = "";
1638     foreach($params as $key=>$val) {
1639         if(is_array($val)) {
1640             if($name==null) {
1641                 $ret .= build_querystring($val, $key);
1642             } else {
1643                 $ret .= build_querystring($val, $name."[$key]");
1644             }
1645         } else {
1646             $val = urlencode($val);
1647             if($name!=null) {
1648                 $ret.=$name."[$key]"."=$val&";
1649             } else {
1650                 $ret.= "$key=$val&";
1651             }
1652         }
1653     }
1654     return $ret;
1655 }
1656
1657 function explode_querystring($query) {
1658         $arg_st = strpos($query, '?');
1659         if($arg_st !== false) {
1660                 $base = substr($query, 0, $arg_st);
1661                 $arg_st += 1;
1662         }
1663         else {
1664                 $base = '';
1665                 $arg_st = 0;
1666         }
1667
1668         $args = explode('&', substr($query, $arg_st));
1669         foreach($args as $k=>$arg) {
1670                 if($arg === '')
1671                         unset($args[$k]);
1672         }
1673         $args = array_values($args);
1674
1675         if(!$base) {
1676                 $base = $args[0];
1677                 unset($args[0]);
1678                 $args = array_values($args);
1679         }
1680
1681         return array(
1682                 'base' => $base,
1683                 'args' => $args,
1684         );
1685 }
1686
1687 /**
1688 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
1689 *
1690 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
1691 */
1692 function curPageURL() {
1693         $pageURL = 'http';
1694         if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
1695         $pageURL .= "://";
1696         if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
1697                 $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
1698         } else {
1699                 $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
1700         }
1701         return $pageURL;
1702 }
1703
1704 function random_digits($digits) {
1705         $rn = '';
1706         for($i = 0; $i < $digits; $i++) {
1707                 $rn .= rand(0,9);
1708         }
1709         return $rn;
1710 }
1711
1712 function get_cachefile($file, $writemode = true) {
1713         $cache = get_itemcachepath();
1714
1715         if ((! $cache) || (! is_dir($cache)))
1716                 return("");
1717
1718         $subfolder = $cache."/".substr($file, 0, 2);
1719
1720         $cachepath = $subfolder."/".$file;
1721
1722         if ($writemode) {
1723                 if (!is_dir($subfolder)) {
1724                         mkdir($subfolder);
1725                         chmod($subfolder, 0777);
1726                 }
1727         }
1728
1729         return($cachepath);
1730 }
1731
1732 function clear_cache($basepath = "", $path = "") {
1733         if ($path == "") {
1734                 $basepath = get_itemcachepath();
1735                 $path = $basepath;
1736         }
1737
1738         if (($path == "") OR (!is_dir($path)))
1739                 return;
1740
1741         if (substr(realpath($path), 0, strlen($basepath)) != $basepath)
1742                 return;
1743
1744         $cachetime = (int)get_config('system','itemcache_duration');
1745         if ($cachetime == 0)
1746                 $cachetime = 86400;
1747
1748         if (is_writable($path)){
1749         if ($dh = opendir($path)) {
1750                 while (($file = readdir($dh)) !== false) {
1751                         $fullpath = $path."/".$file;
1752                         if ((filetype($fullpath) == "dir") and ($file != ".") and ($file != ".."))
1753                                 clear_cache($basepath, $fullpath);
1754                         if ((filetype($fullpath) == "file") and (filectime($fullpath) < (time() - $cachetime)))
1755                                 unlink($fullpath);
1756                 }
1757                 closedir($dh);
1758         }
1759         }
1760 }
1761
1762 function get_itemcachepath() {
1763         // Checking, if the cache is deactivated
1764         $cachetime = (int)get_config('system','itemcache_duration');
1765         if ($cachetime < 0)
1766                 return "";
1767
1768         $itemcache = get_config('system','itemcache');
1769         if (($itemcache != "") AND is_dir($itemcache) AND is_writable($itemcache))
1770                 return($itemcache);
1771
1772         $temppath = get_temppath();
1773
1774         if ($temppath != "") {
1775                 $itemcache = $temppath."/itemcache";
1776                 if(!file_exists($itemcache) && !is_dir($itemcache)) {
1777                         mkdir($itemcache);
1778                 }
1779
1780                 if (is_dir($itemcache) AND is_writable($itemcache)) {
1781                         set_config("system", "itemcache", $itemcache);
1782                         return($itemcache);
1783                 }
1784         }
1785         return "";
1786 }
1787
1788 function get_lockpath() {
1789         $lockpath = get_config('system','lockpath');
1790         if (($lockpath != "") AND is_dir($lockpath) AND is_writable($lockpath))
1791                 return($lockpath);
1792
1793         $temppath = get_temppath();
1794
1795         if ($temppath != "") {
1796                 $lockpath = $temppath."/lock";
1797                 mkdir($lockpath);
1798
1799                 if (is_dir($lockpath) AND is_writable($lockpath)) {
1800                         set_config("system", "lockpath", $lockpath);
1801                         return($lockpath);
1802                 }
1803         }
1804         return "";
1805 }
1806
1807 function get_temppath() {
1808         $temppath = get_config("system","temppath");
1809         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath))
1810                 return($temppath);
1811
1812         $temppath = sys_get_temp_dir();
1813         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath)) {
1814                 set_config("system", "temppath", $temppath);
1815                 return($temppath);
1816         }
1817
1818         return("");
1819 }
1820
1821 function set_template_engine(&$a, $engine = 'internal') {
1822 // This function is no longer necessary, but keep it as a wrapper to the class method
1823 // to avoid breaking themes again unnecessarily
1824
1825         $a->set_template_engine($engine);
1826 }
1827
1828 if(!function_exists('exif_imagetype')) {
1829         function exif_imagetype($file) {
1830                 $size = getimagesize($file);
1831                 return($size[2]);
1832         }
1833 }