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',      '3.4.3-dev' );
  21 define ( 'DFRN_PROTOCOL_VERSION',  '2.23'    );
  22 define ( 'DB_UPDATE_VERSION',      1191      );
  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  * cache levels
  89  */
  90
  91 define ( 'CACHE_MONTH',            0 );
  92 define ( 'CACHE_WEEK',             1 );
  93 define ( 'CACHE_DAY',              2 );
  94 define ( 'CACHE_HOUR',             3 );
  95
  96 /**
  97  * registration policies
  98  */
  99
 100 define ( 'REGISTER_CLOSED',        0 );
 101 define ( 'REGISTER_APPROVE',       1 );
 102 define ( 'REGISTER_OPEN',          2 );
 103
 104 /**
 105  * relationship types
 106  */
 107
 108 define ( 'CONTACT_IS_FOLLOWER', 1);
 109 define ( 'CONTACT_IS_SHARING',  2);
 110 define ( 'CONTACT_IS_FRIEND',   3);
 111
 112
 113 /**
 114  * DB update return values
 115  */
 116
 117 define ( 'UPDATE_SUCCESS', 0);
 118 define ( 'UPDATE_FAILED',  1);
 119
 120
 121 /**
 122  *
 123  * page/profile types
 124  *
 125  * PAGE_NORMAL is a typical personal profile account
 126  * PAGE_SOAPBOX automatically approves all friend requests as CONTACT_IS_SHARING, (readonly)
 127  * PAGE_COMMUNITY automatically approves all friend requests as CONTACT_IS_SHARING, but with
 128  *      write access to wall and comments (no email and not included in page owner's ACL lists)
 129  * PAGE_FREELOVE automatically approves all friend requests as full friends (CONTACT_IS_FRIEND).
 130  *
 131  */
 132
 133 define ( 'PAGE_NORMAL',            0 );
 134 define ( 'PAGE_SOAPBOX',           1 );
 135 define ( 'PAGE_COMMUNITY',         2 );
 136 define ( 'PAGE_FREELOVE',          3 );
 137 define ( 'PAGE_BLOG',              4 );
 138 define ( 'PAGE_PRVGROUP',          5 );
 139
 140 // Type of the community page
 141 define ( 'CP_NO_COMMUNITY_PAGE',   -1 );
 142 define ( 'CP_USERS_ON_SERVER',     0 );
 143 define ( 'CP_GLOBAL_COMMUNITY',    1 );
 144
 145 /**
 146  * Network and protocol family types
 147  */
 148
 149 define ( 'NETWORK_DFRN',             'dfrn');    // Friendica, Mistpark, other DFRN implementations
 150 define ( 'NETWORK_ZOT',              'zot!');    // Zot!
 151 define ( 'NETWORK_OSTATUS',          'stat');    // status.net, identi.ca, GNU-social, other OStatus implementations
 152 define ( 'NETWORK_FEED',             'feed');    // RSS/Atom feeds with no known "post/notify" protocol
 153 define ( 'NETWORK_DIASPORA',         'dspr');    // Diaspora
 154 define ( 'NETWORK_MAIL',             'mail');    // IMAP/POP
 155 define ( 'NETWORK_MAIL2',            'mai2');    // extended IMAP/POP
 156 define ( 'NETWORK_FACEBOOK',         'face');    // Facebook API
 157 define ( 'NETWORK_LINKEDIN',         'lnkd');    // LinkedIn
 158 define ( 'NETWORK_XMPP',             'xmpp');    // XMPP
 159 define ( 'NETWORK_MYSPACE',          'mysp');    // MySpace
 160 define ( 'NETWORK_GPLUS',            'goog');    // Google+
 161 define ( 'NETWORK_PUMPIO',           'pump');    // pump.io
 162 define ( 'NETWORK_TWITTER',          'twit');    // Twitter
 163 define ( 'NETWORK_DIASPORA2',        'dspc');    // Diaspora connector
 164 define ( 'NETWORK_STATUSNET',        'stac');    // Statusnet connector
 165 define ( 'NETWORK_APPNET',           'apdn');    // app.net
 166 define ( 'NETWORK_NEWS',             'nntp');    // Network News Transfer Protocol
 167 define ( 'NETWORK_ICALENDAR',        'ical');    // iCalendar
 168 define ( 'NETWORK_PHANTOM',          'unkn');    // Place holder
 169
 170 /**
 171  * These numbers are used in stored permissions
 172  * and existing allocations MUST NEVER BE CHANGED
 173  * OR RE-ASSIGNED! You may only add to them.
 174  */
 175
 176 $netgroup_ids = array(
 177         NETWORK_DFRN     => (-1),
 178         NETWORK_ZOT      => (-2),
 179         NETWORK_OSTATUS  => (-3),
 180         NETWORK_FEED     => (-4),
 181         NETWORK_DIASPORA => (-5),
 182         NETWORK_MAIL     => (-6),
 183         NETWORK_MAIL2    => (-7),
 184         NETWORK_FACEBOOK => (-8),
 185         NETWORK_LINKEDIN => (-9),
 186         NETWORK_XMPP     => (-10),
 187         NETWORK_MYSPACE  => (-11),
 188         NETWORK_GPLUS    => (-12),
 189         NETWORK_PUMPIO   => (-13),
 190         NETWORK_TWITTER  => (-14),
 191         NETWORK_DIASPORA2 => (-15),
 192         NETWORK_STATUSNET => (-16),
 193         NETWORK_APPNET    => (-17),
 194         NETWORK_NEWS      => (-18),
 195         NETWORK_ICALENDAR => (-19),
 196
 197         NETWORK_PHANTOM  => (-127),
 198 );
 199
 200
 201 /**
 202  * Maximum number of "people who like (or don't like) this"  that we will list by name
 203  */
 204
 205 define ( 'MAX_LIKERS',    75);
 206
 207 /**
 208  * Communication timeout
 209  */
 210
 211 define ( 'ZCURL_TIMEOUT' , (-1));
 212
 213
 214 /**
 215  * email notification options
 216  */
 217
 218 define ( 'NOTIFY_INTRO',    0x0001 );
 219 define ( 'NOTIFY_CONFIRM',  0x0002 );
 220 define ( 'NOTIFY_WALL',     0x0004 );
 221 define ( 'NOTIFY_COMMENT',  0x0008 );
 222 define ( 'NOTIFY_MAIL',     0x0010 );
 223 define ( 'NOTIFY_SUGGEST',  0x0020 );
 224 define ( 'NOTIFY_PROFILE',  0x0040 );
 225 define ( 'NOTIFY_TAGSELF',  0x0080 );
 226 define ( 'NOTIFY_TAGSHARE', 0x0100 );
 227 define ( 'NOTIFY_POKE',     0x0200 );
 228 define ( 'NOTIFY_SHARE',    0x0400 );
 229
 230 define ( 'NOTIFY_SYSTEM',   0x8000 );
 231
 232
 233 /**
 234  * Tag/term types
 235  */
 236
 237 define ( 'TERM_UNKNOWN',   0 );
 238 define ( 'TERM_HASHTAG',   1 );
 239 define ( 'TERM_MENTION',   2 );
 240 define ( 'TERM_CATEGORY',  3 );
 241 define ( 'TERM_PCATEGORY', 4 );
 242 define ( 'TERM_FILE',      5 );
 243 define ( 'TERM_SAVEDSEARCH', 6 );
 244 define ( 'TERM_CONVERSATION', 7 );
 245
 246 define ( 'TERM_OBJ_POST',  1 );
 247 define ( 'TERM_OBJ_PHOTO', 2 );
 248
 249
 250
 251 /**
 252  * various namespaces we may need to parse
 253  */
 254
 255 define ( 'NAMESPACE_ZOT',             'http://purl.org/zot' );
 256 define ( 'NAMESPACE_DFRN' ,           'http://purl.org/macgirvin/dfrn/1.0' );
 257 define ( 'NAMESPACE_THREAD' ,         'http://purl.org/syndication/thread/1.0' );
 258 define ( 'NAMESPACE_TOMB' ,           'http://purl.org/atompub/tombstones/1.0' );
 259 define ( 'NAMESPACE_ACTIVITY',        'http://activitystrea.ms/spec/1.0/' );
 260 define ( 'NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/' );
 261 define ( 'NAMESPACE_MEDIA',           'http://purl.org/syndication/atommedia' );
 262 define ( 'NAMESPACE_SALMON_ME',       'http://salmon-protocol.org/ns/magic-env' );
 263 define ( 'NAMESPACE_OSTATUSSUB',      'http://ostatus.org/schema/1.0/subscribe' );
 264 define ( 'NAMESPACE_GEORSS',          'http://www.georss.org/georss' );
 265 define ( 'NAMESPACE_POCO',            'http://portablecontacts.net/spec/1.0' );
 266 define ( 'NAMESPACE_FEED',            'http://schemas.google.com/g/2010#updates-from' );
 267 define ( 'NAMESPACE_OSTATUS',         'http://ostatus.org/schema/1.0' );
 268 define ( 'NAMESPACE_STATUSNET',       'http://status.net/schema/api/1/' );
 269 define ( 'NAMESPACE_ATOM1',           'http://www.w3.org/2005/Atom' );
 270 /**
 271  * activity stream defines
 272  */
 273
 274 define ( 'ACTIVITY_LIKE',        NAMESPACE_ACTIVITY_SCHEMA . 'like' );
 275 define ( 'ACTIVITY_DISLIKE',     NAMESPACE_DFRN            . '/dislike' );
 276 define ( 'ACTIVITY_ATTEND',      NAMESPACE_ZOT             . '/activity/attendyes' );
 277 define ( 'ACTIVITY_ATTENDNO',    NAMESPACE_ZOT             . '/activity/attendno' );
 278 define ( 'ACTIVITY_ATTENDMAYBE', NAMESPACE_ZOT             . '/activity/attendmaybe' );
 279
 280 define ( 'ACTIVITY_OBJ_HEART',   NAMESPACE_DFRN            . '/heart' );
 281
 282 define ( 'ACTIVITY_FRIEND',      NAMESPACE_ACTIVITY_SCHEMA . 'make-friend' );
 283 define ( 'ACTIVITY_REQ_FRIEND',  NAMESPACE_ACTIVITY_SCHEMA . 'request-friend' );
 284 define ( 'ACTIVITY_UNFRIEND',    NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend' );
 285 define ( 'ACTIVITY_FOLLOW',      NAMESPACE_ACTIVITY_SCHEMA . 'follow' );
 286 define ( 'ACTIVITY_UNFOLLOW',    NAMESPACE_ACTIVITY_SCHEMA . 'stop-following' );
 287 define ( 'ACTIVITY_JOIN',        NAMESPACE_ACTIVITY_SCHEMA . 'join' );
 288
 289 define ( 'ACTIVITY_POST',        NAMESPACE_ACTIVITY_SCHEMA . 'post' );
 290 define ( 'ACTIVITY_UPDATE',      NAMESPACE_ACTIVITY_SCHEMA . 'update' );
 291 define ( 'ACTIVITY_TAG',         NAMESPACE_ACTIVITY_SCHEMA . 'tag' );
 292 define ( 'ACTIVITY_FAVORITE',    NAMESPACE_ACTIVITY_SCHEMA . 'favorite' );
 293 define ( 'ACTIVITY_SHARE',       NAMESPACE_ACTIVITY_SCHEMA . 'share' );
 294
 295 define ( 'ACTIVITY_POKE',        NAMESPACE_ZOT . '/activity/poke' );
 296 define ( 'ACTIVITY_MOOD',        NAMESPACE_ZOT . '/activity/mood' );
 297
 298 define ( 'ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark' );
 299 define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
 300 define ( 'ACTIVITY_OBJ_NOTE',    NAMESPACE_ACTIVITY_SCHEMA . 'note' );
 301 define ( 'ACTIVITY_OBJ_PERSON',  NAMESPACE_ACTIVITY_SCHEMA . 'person' );
 302 define ( 'ACTIVITY_OBJ_IMAGE',   NAMESPACE_ACTIVITY_SCHEMA . 'image' );
 303 define ( 'ACTIVITY_OBJ_PHOTO',   NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
 304 define ( 'ACTIVITY_OBJ_VIDEO',   NAMESPACE_ACTIVITY_SCHEMA . 'video' );
 305 define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
 306 define ( 'ACTIVITY_OBJ_ALBUM',   NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
 307 define ( 'ACTIVITY_OBJ_EVENT',   NAMESPACE_ACTIVITY_SCHEMA . 'event' );
 308 define ( 'ACTIVITY_OBJ_GROUP',   NAMESPACE_ACTIVITY_SCHEMA . 'group' );
 309 define ( 'ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN            . '/tagterm' );
 310 define ( 'ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN            . '/profile' );
 311 define ( 'ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question' );
 312
 313 /**
 314  * item weight for query ordering
 315  */
 316
 317 define ( 'GRAVITY_PARENT',       0);
 318 define ( 'GRAVITY_LIKE',         3);
 319 define ( 'GRAVITY_COMMENT',      6);
 320
 321 /**
 322  *
 323  * Reverse the effect of magic_quotes_gpc if it is enabled.
 324  * Please disable magic_quotes_gpc so we don't have to do this.
 325  * See http://php.net/manual/en/security.magicquotes.disabling.php
 326  *
 327  */
 328
 329 function startup() {
 330
 331         error_reporting(E_ERROR | E_WARNING | E_PARSE);
 332
 333         set_time_limit(0);
 334
 335         // This has to be quite large to deal with embedded private photos
 336         ini_set('pcre.backtrack_limit', 500000);
 337
 338
 339         if (get_magic_quotes_gpc()) {
 340                 $process = array(&$_GET, &$_POST, &$_COOKIE, &$_REQUEST);
 341                 while (list($key, $val) = each($process)) {
 342                         foreach ($val as $k => $v) {
 343                                 unset($process[$key][$k]);
 344                                 if (is_array($v)) {
 345                                         $process[$key][stripslashes($k)] = $v;
 346                                         $process[] = &$process[$key][stripslashes($k)];
 347                                 } else {
 348                                         $process[$key][stripslashes($k)] = stripslashes($v);
 349                                 }
 350                         }
 351                 }
 352                 unset($process);
 353         }
 354
 355 }
 356
 357 /**
 358  *
 359  * class: App
 360  *
 361  * Our main application structure for the life of this page
 362  * Primarily deals with the URL that got us here
 363  * and tries to make some sense of it, and
 364  * stores our page contents and config storage
 365  * and anything else that might need to be passed around
 366  * before we spit the page out.
 367  *
 368  */
 369
 370 if(! class_exists('App')) {
 371         class App {
 372
 373                 public  $module_loaded = false;
 374                 public  $query_string;
 375                 public  $config;
 376                 public  $page;
 377                 public  $profile;
 378                 public  $profile_uid;
 379                 public  $user;
 380                 public  $cid;
 381                 public  $contact;
 382                 public  $contacts;
 383                 public  $page_contact;
 384                 public  $content;
 385                 public  $data = array();
 386                 public  $error = false;
 387                 public  $cmd;
 388                 public  $argv;
 389                 public  $argc;
 390                 public  $module;
 391                 public  $pager;
 392                 public  $strings;
 393                 public  $path;
 394                 public  $hooks;
 395                 public  $timezone;
 396                 public  $interactive = true;
 397                 public  $plugins;
 398                 public  $apps = array();
 399                 public  $identities;
 400                 public  $is_mobile;
 401                 public  $is_tablet;
 402                 public  $is_friendica_app;
 403                 public  $performance = array();
 404
 405                 public $nav_sel;
 406
 407                 public $category;
 408
 409
 410                 // Allow themes to control internal parameters
 411                 // by changing App values in theme.php
 412
 413                 public  $sourcename = '';
 414                 public  $videowidth = 425;
 415                 public  $videoheight = 350;
 416                 public  $force_max_items = 0;
 417                 public  $theme_thread_allow = true;
 418                 public  $theme_events_in_profile = true;
 419
 420                 // An array for all theme-controllable parameters
 421                 // Mostly unimplemented yet. Only options 'stylesheet' and
 422                 // beyond are used.
 423
 424                 public  $theme = array(
 425                         'sourcename' => '',
 426                         'videowidth' => 425,
 427                         'videoheight' => 350,
 428                         'force_max_items' => 0,
 429                         'thread_allow' => true,
 430                         'stylesheet' => '',
 431                         'template_engine' => 'smarty3',
 432                 );
 433
 434                 // array of registered template engines ('name'=>'class name')
 435                 public $template_engines = array();
 436                 // array of instanced template engines ('name'=>'instance')
 437                 public $template_engine_instance = array();
 438
 439                 private $ldelim = array(
 440                         'internal' => '',
 441                         'smarty3' => '{{'
 442                 );
 443                 private $rdelim = array(
 444                         'internal' => '',
 445                         'smarty3' => '}}'
 446                 );
 447
 448                 private $scheme;
 449                 private $hostname;
 450                 private $baseurl;
 451                 private $db;
 452
 453                 private $curl_code;
 454                 private $curl_content_type;
 455                 private $curl_headers;
 456
 457                 private $cached_profile_image;
 458                 private $cached_profile_picdate;
 459
 460                 function __construct() {
 461
 462                         global $default_timezone;
 463
 464                         $hostname = "";
 465
 466                         if (file_exists(".htpreconfig.php"))
 467                                 @include(".htpreconfig.php");
 468
 469                         $this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
 470
 471                         date_default_timezone_set($this->timezone);
 472
 473                         $this->performance["start"] = microtime(true);
 474                         $this->performance["database"] = 0;
 475                         $this->performance["network"] = 0;
 476                         $this->performance["file"] = 0;
 477                         $this->performance["rendering"] = 0;
 478                         $this->performance["parser"] = 0;
 479                         $this->performance["marktime"] = 0;
 480                         $this->performance["markstart"] = microtime(true);
 481
 482                         $this->config = array();
 483                         $this->page = array();
 484                         $this->pager= array();
 485
 486                         $this->query_string = '';
 487
 488                         startup();
 489
 490                         set_include_path(
 491                                         'include' . PATH_SEPARATOR
 492                                         . 'library' . PATH_SEPARATOR
 493                                         . 'library/phpsec' . PATH_SEPARATOR
 494                                         . 'library/langdet' . PATH_SEPARATOR
 495                                         . '.' );
 496
 497
 498                         $this->scheme = 'http';
 499                         if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
 500                                 $this->scheme = 'https';
 501                         elseif(x($_SERVER,'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443))
 502                                 $this->scheme = 'https';
 503
 504                         if(x($_SERVER,'SERVER_NAME')) {
 505                                 $this->hostname = $_SERVER['SERVER_NAME'];
 506
 507                                 // See bug 437 - this didn't work so disabling it
 508                                 //if(stristr($this->hostname,'xn--')) {
 509                                         // PHP or webserver may have converted idn to punycode, so
 510                                         // convert punycode back to utf-8
 511                                 //      require_once('library/simplepie/idn/idna_convert.class.php');
 512                                 //      $x = new idna_convert();
 513                                 //      $this->hostname = $x->decode($_SERVER['SERVER_NAME']);
 514                                 //}
 515
 516                                 if(x($_SERVER,'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443)
 517                                         $this->hostname .= ':' . $_SERVER['SERVER_PORT'];
 518                                 /**
 519                                  * Figure out if we are running at the top of a domain
 520                                  * or in a sub-directory and adjust accordingly
 521                                  */
 522
 523                                 $path = trim(dirname($_SERVER['SCRIPT_NAME']),'/\\');
 524                                 if(isset($path) && strlen($path) && ($path != $this->path))
 525                                         $this->path = $path;
 526                         }
 527
 528                         if ($hostname != "")
 529                                 $this->hostname = $hostname;
 530
 531                         if (is_array($_SERVER["argv"]) && $_SERVER["argc"]>1 && substr(end($_SERVER["argv"]), 0, 4)=="http" ) {
 532                                 $this->set_baseurl(array_pop($_SERVER["argv"]) );
 533                                 $_SERVER["argc"] --;
 534                         }
 535
 536                         #set_include_path("include/$this->hostname" . PATH_SEPARATOR . get_include_path());
 537
 538                         if((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,9) === "pagename=") {
 539                                 $this->query_string = substr($_SERVER['QUERY_STRING'],9);
 540                                 // removing trailing / - maybe a nginx problem
 541                                 if (substr($this->query_string, 0, 1) == "/")
 542                                         $this->query_string = substr($this->query_string, 1);
 543                         } elseif((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,2) === "q=") {
 544                                 $this->query_string = substr($_SERVER['QUERY_STRING'],2);
 545                                 // removing trailing / - maybe a nginx problem
 546                                 if (substr($this->query_string, 0, 1) == "/")
 547                                         $this->query_string = substr($this->query_string, 1);
 548                         }
 549
 550                         if (x($_GET,'pagename'))
 551                                 $this->cmd = trim($_GET['pagename'],'/\\');
 552                         elseif (x($_GET,'q'))
 553                                 $this->cmd = trim($_GET['q'],'/\\');
 554
 555
 556                         // fix query_string
 557                         $this->query_string = str_replace($this->cmd."&",$this->cmd."?", $this->query_string);
 558
 559
 560                         // unix style "homedir"
 561
 562                         if(substr($this->cmd,0,1) === '~')
 563                                 $this->cmd = 'profile/' . substr($this->cmd,1);
 564
 565                         // Diaspora style profile url
 566
 567                         if(substr($this->cmd,0,2) === 'u/')
 568                                 $this->cmd = 'profile/' . substr($this->cmd,2);
 569
 570
 571                         /**
 572                          *
 573                          * Break the URL path into C style argc/argv style arguments for our
 574                          * modules. Given "http://example.com/module/arg1/arg2", $this->argc
 575                          * will be 3 (integer) and $this->argv will contain:
 576                          *   [0] => 'module'
 577                          *   [1] => 'arg1'
 578                          *   [2] => 'arg2'
 579                          *
 580                          *
 581                          * There will always be one argument. If provided a naked domain
 582                          * URL, $this->argv[0] is set to "home".
 583                          *
 584                          */
 585
 586                         $this->argv = explode('/',$this->cmd);
 587                         $this->argc = count($this->argv);
 588                         if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
 589                                 $this->module = str_replace(".", "_", $this->argv[0]);
 590                                 $this->module = str_replace("-", "_", $this->module);
 591                         }
 592                         else {
 593                                 $this->argc = 1;
 594                                 $this->argv = array('home');
 595                                 $this->module = 'home';
 596                         }
 597
 598                         /**
 599                          * See if there is any page number information, and initialise
 600                          * pagination
 601                          */
 602
 603                         $this->pager['page'] = ((x($_GET,'page') && intval($_GET['page']) > 0) ? intval($_GET['page']) : 1);
 604                         $this->pager['itemspage'] = 50;
 605                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 606                         if($this->pager['start'] < 0)
 607                                 $this->pager['start'] = 0;
 608                         $this->pager['total'] = 0;
 609
 610                         /**
 611                          * Detect mobile devices
 612                          */
 613
 614                         $mobile_detect = new Mobile_Detect();
 615                         $this->is_mobile = $mobile_detect->isMobile();
 616                         $this->is_tablet = $mobile_detect->isTablet();
 617
 618                         // Friendica-Client
 619                         $this->is_friendica_app = ($_SERVER['HTTP_USER_AGENT'] == "Apache-HttpClient/UNAVAILABLE (java 1.4)");
 620
 621                         /**
 622                          * register template engines
 623                          */
 624                         $dc = get_declared_classes();
 625                         foreach ($dc as $k) {
 626                                 if (in_array("ITemplateEngine", class_implements($k))){
 627                                         $this->register_template_engine($k);
 628                                 }
 629                         }
 630
 631                 }
 632
 633                 function get_basepath() {
 634
 635                         $basepath = get_config("system", "basepath");
 636
 637                         if ($basepath == "")
 638                                 $basepath = $_SERVER["DOCUMENT_ROOT"];
 639
 640                         if ($basepath == "")
 641                                 $basepath = $_SERVER["PWD"];
 642
 643                         return($basepath);
 644                 }
 645
 646                 function get_scheme() {
 647                         return($this->scheme);
 648                 }
 649
 650                 function get_baseurl($ssl = false) {
 651
 652                         $scheme = $this->scheme;
 653
 654                         if((x($this->config,'system')) && (x($this->config['system'],'ssl_policy'))) {
 655                                 if(intval($this->config['system']['ssl_policy']) === intval(SSL_POLICY_FULL))
 656                                         $scheme = 'https';
 657
 658                                 //      Basically, we have $ssl = true on any links which can only be seen by a logged in user
 659                                 //      (and also the login link). Anything seen by an outsider will have it turned off.
 660
 661                                 if($this->config['system']['ssl_policy'] == SSL_POLICY_SELFSIGN) {
 662                                         if($ssl)
 663                                                 $scheme = 'https';
 664                                         else
 665                                                 $scheme = 'http';
 666                                 }
 667                         }
 668
 669                         if (get_config('config','hostname') != "")
 670                                 $this->hostname = get_config('config','hostname');
 671
 672                         $this->baseurl = $scheme . "://" . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
 673                         return $this->baseurl;
 674                 }
 675
 676                 function set_baseurl($url) {
 677                         $parsed = @parse_url($url);
 678
 679                         $this->baseurl = $url;
 680
 681                         if($parsed) {
 682                                 $this->scheme = $parsed['scheme'];
 683
 684                                 $hostname = $parsed['host'];
 685                                 if(x($parsed,'port'))
 686                                         $hostname .= ':' . $parsed['port'];
 687                                 if(x($parsed,'path'))
 688                                         $this->path = trim($parsed['path'],'\\/');
 689
 690                                 if (file_exists(".htpreconfig.php"))
 691                                         @include(".htpreconfig.php");
 692
 693                                 if (get_config('config','hostname') != "")
 694                                         $this->hostname = get_config('config','hostname');
 695
 696                                 if (!isset($this->hostname) OR ($this->hostname == ""))
 697                                         $this->hostname = $hostname;
 698                         }
 699
 700                 }
 701
 702                 function get_hostname() {
 703                         if (get_config('config','hostname') != "")
 704                                 $this->hostname = get_config('config','hostname');
 705
 706                         return $this->hostname;
 707                 }
 708
 709                 function set_hostname($h) {
 710                         $this->hostname = $h;
 711                 }
 712
 713                 function set_path($p) {
 714                         $this->path = trim(trim($p),'/');
 715                 }
 716
 717                 function get_path() {
 718                         return $this->path;
 719                 }
 720
 721                 function set_pager_total($n) {
 722                         $this->pager['total'] = intval($n);
 723                 }
 724
 725                 function set_pager_itemspage($n) {
 726                         $this->pager['itemspage'] = ((intval($n) > 0) ? intval($n) : 0);
 727                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 728                 }
 729
 730                 function set_pager_page($n) {
 731                         $this->pager['page'] = $n;
 732                         $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
 733                 }
 734
 735                 function init_pagehead() {
 736                         $interval = ((local_user()) ? get_pconfig(local_user(),'system','update_interval') : 40000);
 737                         if($interval < 10000)
 738                                 $interval = 40000;
 739
 740                         // compose the page title from the sitename and the
 741                         // current module called
 742                         if (!$this->module=='')
 743                         {
 744                             $this->page['title'] = $this->config['sitename'].' ('.$this->module.')';
 745                         } else {
 746                             $this->page['title'] = $this->config['sitename'];
 747                         }
 748
 749                         /* put the head template at the beginning of page['htmlhead']
 750                          * since the code added by the modules frequently depends on it
 751                          * being first
 752                          */
 753                         if(!isset($this->page['htmlhead']))
 754                                 $this->page['htmlhead'] = '';
 755
 756                         // If we're using Smarty, then doing replace_macros() will replace
 757                         // any unrecognized variables with a blank string. Since we delay
 758                         // replacing $stylesheet until later, we need to replace it now
 759                         // with another variable name
 760                         if($this->theme['template_engine'] === 'smarty3')
 761                                 $stylesheet = $this->get_template_ldelim('smarty3') . '$stylesheet' . $this->get_template_rdelim('smarty3');
 762                         else
 763                                 $stylesheet = '$stylesheet';
 764
 765                         $shortcut_icon = get_config("system", "shortcut_icon");
 766                         if ($shortcut_icon == "")
 767                                 $shortcut_icon = $this->get_baseurl()."/images/friendica-32.png";
 768
 769                         $touch_icon = get_config("system", "touch_icon");
 770                         if ($touch_icon == "")
 771                                 $touch_icon = $this->get_baseurl()."/images/friendica-128.png";
 772
 773                         $tpl = get_markup_template('head.tpl');
 774                         $this->page['htmlhead'] = replace_macros($tpl,array(
 775                                 '$baseurl' => $this->get_baseurl(), // FIXME for z_path!!!!
 776                                 '$local_user' => local_user(),
 777                                 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
 778                                 '$delitem' => t('Delete this item?'),
 779                                 '$comment' => t('Comment'),
 780                                 '$showmore' => t('show more'),
 781                                 '$showfewer' => t('show fewer'),
 782                                 '$update_interval' => $interval,
 783                                 '$shortcut_icon' => $shortcut_icon,
 784                                 '$touch_icon' => $touch_icon,
 785                                 '$stylesheet' => $stylesheet
 786                         )) . $this->page['htmlhead'];
 787                 }
 788
 789                 function init_page_end() {
 790                         if(!isset($this->page['end']))
 791                                 $this->page['end'] = '';
 792                         $tpl = get_markup_template('end.tpl');
 793                         $this->page['end'] = replace_macros($tpl,array(
 794                                 '$baseurl' => $this->get_baseurl() // FIXME for z_path!!!!
 795                         )) . $this->page['end'];
 796                 }
 797
 798                 function set_curl_code($code) {
 799                         $this->curl_code = $code;
 800                 }
 801
 802                 function get_curl_code() {
 803                         return $this->curl_code;
 804                 }
 805
 806                 function set_curl_content_type($content_type) {
 807                         $this->curl_content_type = $content_type;
 808                 }
 809
 810                 function get_curl_content_type() {
 811                         return $this->curl_content_type;
 812                 }
 813
 814                 function set_curl_headers($headers) {
 815                         $this->curl_headers = $headers;
 816                 }
 817
 818                 function get_curl_headers() {
 819                         return $this->curl_headers;
 820                 }
 821
 822                 function get_cached_avatar_image($avatar_image){
 823                         if($this->cached_profile_image[$avatar_image])
 824                                 return $this->cached_profile_image[$avatar_image];
 825
 826                         $path_parts = explode("/",$avatar_image);
 827                         $common_filename = $path_parts[count($path_parts)-1];
 828
 829                         if($this->cached_profile_picdate[$common_filename]){
 830                                 $this->cached_profile_image[$avatar_image] = $avatar_image . $this->cached_profile_picdate[$common_filename];
 831                         } else {
 832                                 $r = q("SELECT `contact`.`avatar-date` AS picdate FROM `contact` WHERE `contact`.`thumb` like '%%/%s'",
 833                                         $common_filename);
 834                                 if(! count($r)){
 835                                         $this->cached_profile_image[$avatar_image] = $avatar_image;
 836                                 } else {
 837                                         $this->cached_profile_picdate[$common_filename] = "?rev=".urlencode($r[0]['picdate']);
 838                                         $this->cached_profile_image[$avatar_image] = $avatar_image.$this->cached_profile_picdate[$common_filename];
 839                                 }
 840                         }
 841                         return $this->cached_profile_image[$avatar_image];
 842                 }
 843
 844
 845                 /**
 846                  * register template engine class
 847                  * if $name is "", is used class static property $class::$name
 848                  * @param string $class
 849                  * @param string $name
 850                  */
 851                 function register_template_engine($class, $name = '') {
 852                         if ($name===""){
 853                                 $v = get_class_vars( $class );
 854                                 if(x($v,"name")) $name = $v['name'];
 855                         }
 856                         if ($name===""){
 857                                 echo "template engine <tt>$class</tt> cannot be registered without a name.\n";
 858                                 killme();
 859                         }
 860                         $this->template_engines[$name] = $class;
 861                 }
 862
 863                 /**
 864                  * return template engine instance. If $name is not defined,
 865                  * return engine defined by theme, or default
 866                  *
 867                  * @param strin $name Template engine name
 868                  * @return object Template Engine instance
 869                  */
 870                 function template_engine($name = ''){
 871                         if ($name!=="") {
 872                                 $template_engine = $name;
 873                         } else {
 874                                 $template_engine = 'smarty3';
 875                                 if (x($this->theme, 'template_engine')) {
 876                                         $template_engine = $this->theme['template_engine'];
 877                                 }
 878                         }
 879
 880                         if (isset($this->template_engines[$template_engine])){
 881                                 if(isset($this->template_engine_instance[$template_engine])){
 882                                         return $this->template_engine_instance[$template_engine];
 883                                 } else {
 884                                         $class = $this->template_engines[$template_engine];
 885                                         $obj = new $class;
 886                                         $this->template_engine_instance[$template_engine] = $obj;
 887                                         return $obj;
 888                                 }
 889                         }
 890
 891                         echo "template engine <tt>$template_engine</tt> is not registered!\n"; killme();
 892                 }
 893
 894                 function get_template_engine() {
 895                         return $this->theme['template_engine'];
 896                 }
 897
 898                 function set_template_engine($engine = 'smarty3') {
 899                         $this->theme['template_engine'] = $engine;
 900                         /*
 901                         $this->theme['template_engine'] = 'smarty3';
 902
 903                         switch($engine) {
 904                                 case 'smarty3':
 905                                         if(is_writable('view/smarty3/'))
 906                                                 $this->theme['template_engine'] = 'smarty3';
 907                                         break;
 908                                 default:
 909                                         break;
 910                         }
 911                         */
 912                 }
 913
 914                 function get_template_ldelim($engine = 'smarty3') {
 915                         return $this->ldelim[$engine];
 916                 }
 917
 918                 function get_template_rdelim($engine = 'smarty3') {
 919                         return $this->rdelim[$engine];
 920                 }
 921
 922                 function save_timestamp($stamp, $value) {
 923                         $duration = (float)(microtime(true)-$stamp);
 924
 925                         $this->performance[$value] += (float)$duration;
 926                         $this->performance["marktime"] += (float)$duration;
 927                 }
 928
 929                 function mark_timestamp($mark) {
 930                         //$this->performance["markstart"] -= microtime(true) - $this->performance["marktime"];
 931                         $this->performance["markstart"] = microtime(true) - $this->performance["markstart"] - $this->performance["marktime"];
 932                 }
 933
 934                 function get_useragent() {
 935                         return(FRIENDICA_PLATFORM." '".FRIENDICA_CODENAME."' ".FRIENDICA_VERSION."-".DB_UPDATE_VERSION."; ".$this->get_baseurl());
 936                 }
 937
 938                 function is_friendica_app() {
 939                         return($this->is_friendica_app);
 940                 }
 941
 942         }
 943 }
 944
 945 // retrieve the App structure
 946 // useful in functions which require it but don't get it passed to them
 947
 948 if(! function_exists('get_app')) {
 949         function get_app() {
 950                 global $a;
 951                 return $a;
 952         }
 953 };
 954
 955
 956 // Multi-purpose function to check variable state.
 957 // Usage: x($var) or $x($array,'key')
 958 // returns false if variable/key is not set
 959 // if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
 960 // e.g. x('') or x(0) returns 0;
 961
 962 if(! function_exists('x')) {
 963         function x($s,$k = NULL) {
 964                 if($k != NULL) {
 965                         if((is_array($s)) && (array_key_exists($k,$s))) {
 966                                 if($s[$k])
 967                                         return (int) 1;
 968                                 return (int) 0;
 969                 }
 970                         return false;
 971                 }
 972                 else {
 973                         if(isset($s)) {
 974                                 if($s) {
 975                                         return (int) 1;
 976                                 }
 977                                 return (int) 0;
 978                         }
 979                         return false;
 980                 }
 981         }
 982 }
 983
 984 // called from db initialisation if db is dead.
 985
 986 if(! function_exists('system_unavailable')) {
 987         function system_unavailable() {
 988                 include('system_unavailable.php');
 989                 system_down();
 990                 killme();
 991         }
 992 }
 993
 994
 995
 996 function clean_urls() {
 997         global $a;
 998         //      if($a->config['system']['clean_urls'])
 999         return true;
1000         //      return false;
1001 }
1002
1003 function z_path() {
1004         global $a;
1005         $base = $a->get_baseurl();
1006         if(! clean_urls())
1007                 $base .= '/?q=';
1008         return $base;
1009 }
1010
1011 function z_root() {
1012         global $a;
1013         return $a->get_baseurl();
1014 }
1015
1016 function absurl($path) {
1017         if(strpos($path,'/') === 0)
1018                 return z_path() . $path;
1019         return $path;
1020 }
1021
1022 function is_ajax() {
1023         return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
1024 }
1025
1026 function check_db() {
1027
1028         $build = get_config('system','build');
1029         if(! x($build)) {
1030                 set_config('system','build',DB_UPDATE_VERSION);
1031                 $build = DB_UPDATE_VERSION;
1032         }
1033         if($build != DB_UPDATE_VERSION)
1034                 proc_run('php', 'include/dbupdate.php');
1035
1036 }
1037
1038
1039
1040
1041 // Sets the base url for use in cmdline programs which don't have
1042 // $_SERVER variables
1043
1044 if(! function_exists('check_url')) {
1045         function check_url(&$a) {
1046
1047                 $url = get_config('system','url');
1048
1049                 // if the url isn't set or the stored url is radically different
1050                 // than the currently visited url, store the current value accordingly.
1051                 // "Radically different" ignores common variations such as http vs https
1052                 // and www.example.com vs example.com.
1053                 // We will only change the url to an ip address if there is no existing setting
1054
1055                 if(! x($url))
1056                         $url = set_config('system','url',$a->get_baseurl());
1057                 if((! link_compare($url,$a->get_baseurl())) && (! preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/",$a->get_hostname)))
1058                         $url = set_config('system','url',$a->get_baseurl());
1059
1060                 return;
1061         }
1062 }
1063
1064
1065 // Automatic database updates
1066
1067 if(! function_exists('update_db')) {
1068         function update_db(&$a) {
1069                 $build = get_config('system','build');
1070                 if(! x($build))
1071                         $build = set_config('system','build',DB_UPDATE_VERSION);
1072
1073                 if($build != DB_UPDATE_VERSION) {
1074                         $stored = intval($build);
1075                         $current = intval(DB_UPDATE_VERSION);
1076                         if($stored < $current) {
1077                                 load_config('database');
1078
1079                                 // We're reporting a different version than what is currently installed.
1080                                 // Run any existing update scripts to bring the database up to current.
1081
1082                                 // make sure that boot.php and update.php are the same release, we might be
1083                                 // updating right this very second and the correct version of the update.php
1084                                 // file may not be here yet. This can happen on a very busy site.
1085
1086                                 if(DB_UPDATE_VERSION == UPDATE_VERSION) {
1087                                         // Compare the current structure with the defined structure
1088
1089                                         $t = get_config('database','dbupdate_'.DB_UPDATE_VERSION);
1090                                         if($t !== false)
1091                                                 return;
1092
1093                                         set_config('database','dbupdate_'.DB_UPDATE_VERSION, time());
1094
1095                                         // run old update routine (wich could modify the schema and
1096                                         // conflits with new routine)
1097                                         for ($x = $stored; $x < NEW_UPDATE_ROUTINE_VERSION; $x++) {
1098                                                 $r = run_update_function($x);
1099                                                 if (!$r) break;
1100                                         }
1101                                         if ($stored < NEW_UPDATE_ROUTINE_VERSION) $stored = NEW_UPDATE_ROUTINE_VERSION;
1102
1103
1104                                         // run new update routine
1105                                         // it update the structure in one call
1106                                         $retval = update_structure(false, true);
1107                                         if($retval) {
1108                                                 update_fail(
1109                                                         DB_UPDATE_VERSION,
1110                                                         $retval
1111                                                 );
1112                                                 return;
1113                                         } else {
1114                                                 set_config('database','dbupdate_'.DB_UPDATE_VERSION, 'success');
1115                                         }
1116
1117                                         // run any left update_nnnn functions in update.php
1118                                         for($x = $stored; $x < $current; $x ++) {
1119                                                 $r = run_update_function($x);
1120                                                 if (!$r) break;
1121                                         }
1122                                 }
1123                         }
1124                 }
1125
1126                 return;
1127         }
1128 }
1129 if(!function_exists('run_update_function')){
1130         function run_update_function($x) {
1131                 if(function_exists('update_' . $x)) {
1132
1133                         // There could be a lot of processes running or about to run.
1134                         // We want exactly one process to run the update command.
1135                         // So store the fact that we're taking responsibility
1136                         // after first checking to see if somebody else already has.
1137
1138                         // If the update fails or times-out completely you may need to
1139                         // delete the config entry to try again.
1140
1141                         $t = get_config('database','update_' . $x);
1142                         if($t !== false)
1143                                 return false;
1144                         set_config('database','update_' . $x, time());
1145
1146                         // call the specific update
1147
1148                         $func = 'update_' . $x;
1149                         $retval = $func();
1150
1151                         if($retval) {
1152                                 //send the administrator an e-mail
1153                                 update_fail(
1154                                         $x,
1155                                         sprintf(t('Update %s failed. See error logs.'), $x)
1156                                 );
1157                                 return false;
1158                         } else {
1159                                 set_config('database','update_' . $x, 'success');
1160                                 set_config('system','build', $x + 1);
1161                                 return true;
1162                         }
1163                 } else {
1164                         set_config('database','update_' . $x, 'success');
1165                         set_config('system','build', $x + 1);
1166                         return true;
1167                 }
1168                 return true;
1169         }
1170 }
1171
1172
1173 if(! function_exists('check_plugins')) {
1174         function check_plugins(&$a) {
1175
1176                 /**
1177                  *
1178                  * Synchronise plugins:
1179                  *
1180                  * $a->config['system']['addon'] contains a comma-separated list of names
1181                  * of plugins/addons which are used on this system.
1182                  * Go through the database list of already installed addons, and if we have
1183                  * an entry, but it isn't in the config list, call the uninstall procedure
1184                  * and mark it uninstalled in the database (for now we'll remove it).
1185                  * Then go through the config list and if we have a plugin that isn't installed,
1186                  * call the install procedure and add it to the database.
1187                  *
1188                  */
1189
1190                 $r = q("SELECT * FROM `addon` WHERE `installed` = 1");
1191                 if(count($r))
1192                         $installed = $r;
1193                 else
1194                         $installed = array();
1195
1196                 $plugins = get_config('system','addon');
1197                 $plugins_arr = array();
1198
1199                 if($plugins)
1200                         $plugins_arr = explode(',',str_replace(' ', '',$plugins));
1201
1202                 $a->plugins = $plugins_arr;
1203
1204                 $installed_arr = array();
1205
1206                 if(count($installed)) {
1207                         foreach($installed as $i) {
1208                                 if(! in_array($i['name'],$plugins_arr)) {
1209                                         uninstall_plugin($i['name']);
1210                                 }
1211                                 else {
1212                                         $installed_arr[] = $i['name'];
1213                                 }
1214                         }
1215                 }
1216
1217                 if(count($plugins_arr)) {
1218                         foreach($plugins_arr as $p) {
1219                                 if(! in_array($p,$installed_arr)) {
1220                                         install_plugin($p);
1221                                 }
1222                         }
1223                 }
1224
1225
1226                 load_hooks();
1227
1228                 return;
1229         }
1230 }
1231
1232 function get_guid($size=16, $prefix = "") {
1233
1234         if ($prefix == "") {
1235                 $a = get_app();
1236                 $prefix = hash("crc32", $a->get_hostname());
1237         }
1238
1239         while (strlen($prefix) < ($size - 13))
1240                 $prefix .= mt_rand();
1241
1242         if ($size >= 24) {
1243                 $prefix = substr($prefix, 0, $size - 22);
1244                 return(str_replace(".", "", uniqid($prefix, true)));
1245         } else {
1246                 $prefix = substr($prefix, 0, $size - 13);
1247                 return(uniqid($prefix));
1248         }
1249 }
1250
1251 // wrapper for adding a login box. If $register == true provide a registration
1252 // link. This will most always depend on the value of $a->config['register_policy'].
1253 // returns the complete html for inserting into the page
1254
1255 if(! function_exists('login')) {
1256         function login($register = false, $hiddens=false) {
1257                 $a = get_app();
1258                 $o = "";
1259                 $reg = false;
1260                 if ($register) {
1261                         $reg = array(
1262                                 'title' => t('Create a New Account'),
1263                                 'desc' => t('Register')
1264                         );
1265                 }
1266
1267                 $noid = get_config('system','no_openid');
1268
1269                 $dest_url = $a->get_baseurl(true) . '/' . $a->query_string;
1270
1271                 if(local_user()) {
1272                         $tpl = get_markup_template("logout.tpl");
1273                 }
1274                 else {
1275                         $a->page['htmlhead'] .= replace_macros(get_markup_template("login_head.tpl"),array(
1276                                 '$baseurl'              => $a->get_baseurl(true)
1277                         ));
1278
1279                         $tpl = get_markup_template("login.tpl");
1280                         $_SESSION['return_url'] = $a->query_string;
1281                         $a->module = 'login';
1282                 }
1283
1284                 $o .= replace_macros($tpl, array(
1285
1286                         '$dest_url'     => $dest_url,
1287                         '$logout'       => t('Logout'),
1288                         '$login'        => t('Login'),
1289
1290                         '$lname'                => array('username', t('Nickname or Email address: ') , '', ''),
1291                         '$lpassword'    => array('password', t('Password: '), '', ''),
1292                         '$lremember'    => array('remember', t('Remember me'), 0,  ''),
1293
1294                         '$openid'               => !$noid,
1295                         '$lopenid'      => array('openid_url', t('Or login using OpenID: '),'',''),
1296
1297                         '$hiddens'      => $hiddens,
1298
1299                         '$register'     => $reg,
1300
1301                         '$lostpass'     => t('Forgot your password?'),
1302                         '$lostlink'     => t('Password Reset'),
1303
1304                         '$tostitle'     => t('Website Terms of Service'),
1305                         '$toslink'      => t('terms of service'),
1306
1307                         '$privacytitle' => t('Website Privacy Policy'),
1308                         '$privacylink'  => t('privacy policy'),
1309
1310                 ));
1311
1312                 call_hooks('login_hook',$o);
1313
1314                 return $o;
1315         }
1316 }
1317
1318 // Used to end the current process, after saving session state.
1319
1320 if(! function_exists('killme')) {
1321         function killme() {
1322                 session_write_close();
1323                 exit;
1324         }
1325 }
1326
1327 // redirect to another URL and terminate this process.
1328
1329 if(! function_exists('goaway')) {
1330         function goaway($s) {
1331                 header("Location: $s");
1332                 killme();
1333         }
1334 }
1335
1336
1337 // Returns the uid of locally logged in user or false.
1338
1339 if(! function_exists('local_user')) {
1340         function local_user() {
1341                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
1342                         return intval($_SESSION['uid']);
1343                 return false;
1344         }
1345 }
1346
1347 // Returns contact id of authenticated site visitor or false
1348
1349 if(! function_exists('remote_user')) {
1350         function remote_user() {
1351                 if((x($_SESSION,'authenticated')) && (x($_SESSION,'visitor_id')))
1352                         return intval($_SESSION['visitor_id']);
1353                 return false;
1354         }
1355 }
1356
1357 // contents of $s are displayed prominently on the page the next time
1358 // a page is loaded. Usually used for errors or alerts.
1359
1360 if(! function_exists('notice')) {
1361         /**
1362          * Show an error message to user.
1363          *
1364          * This function save text in session, to be shown to the user at next page load
1365          *
1366          * @param string $s - Text of notice
1367          */
1368         function notice($s) {
1369                 $a = get_app();
1370                 if(! x($_SESSION,'sysmsg'))     $_SESSION['sysmsg'] = array();
1371                 if($a->interactive)
1372                         $_SESSION['sysmsg'][] = $s;
1373         }
1374 }
1375 if(! function_exists('info')) {
1376         /**
1377          * Show an info message to user.
1378          *
1379          * This function save text in session, to be shown to the user at next page load
1380          *
1381          * @param string $s - Text of notice
1382          */
1383         function info($s) {
1384                 $a = get_app();
1385
1386                 if (local_user() AND get_pconfig(local_user(),'system','ignore_info'))
1387                         return;
1388
1389                 if(! x($_SESSION,'sysmsg_info')) $_SESSION['sysmsg_info'] = array();
1390                 if($a->interactive)
1391                         $_SESSION['sysmsg_info'][] = $s;
1392         }
1393 }
1394
1395
1396 // wrapper around config to limit the text length of an incoming message
1397
1398 if(! function_exists('get_max_import_size')) {
1399         function get_max_import_size() {
1400                 global $a;
1401                 return ((x($a->config,'max_import_size')) ? $a->config['max_import_size'] : 0 );
1402         }
1403 }
1404
1405 /**
1406  *
1407  * Wrap calls to proc_close(proc_open()) and call hook
1408  * so plugins can take part in process :)
1409  *
1410  * args:
1411  * $cmd program to run
1412  *  next args are passed as $cmd command line
1413  *
1414  * e.g.: proc_run("ls","-la","/tmp");
1415  *
1416  * $cmd and string args are surrounded with ""
1417  */
1418
1419 if(! function_exists('proc_run')) {
1420         function proc_run($cmd){
1421
1422                 $a = get_app();
1423
1424                 $args = func_get_args();
1425
1426                 $newargs = array();
1427                 if(! count($args))
1428                         return;
1429
1430                 // expand any arrays
1431
1432                 foreach($args as $arg) {
1433                         if(is_array($arg)) {
1434                                 foreach($arg as $n) {
1435                                         $newargs[] = $n;
1436                                 }
1437                         }
1438                         else
1439                                 $newargs[] = $arg;
1440                 }
1441
1442                 $args = $newargs;
1443
1444                 $arr = array('args' => $args, 'run_cmd' => true);
1445
1446                 call_hooks("proc_run", $arr);
1447                 if(! $arr['run_cmd'])
1448                         return;
1449
1450                 if(count($args) && $args[0] === 'php') {
1451
1452                         if (get_config("system", "worker")) {
1453                                 $argv = $args;
1454                                 array_shift($argv);
1455
1456                                 $parameters = json_encode($argv);
1457                                 $found = q("SELECT `id` FROM `workerqueue` WHERE `parameter` = '%s'",
1458                                                 dbesc($parameters));
1459
1460                                 if (!$found)
1461                                         q("INSERT INTO `workerqueue` (`parameter`, `created`, `priority`)
1462                                                                 VALUES ('%s', '%s', %d)",
1463                                                 dbesc($parameters),
1464                                                 dbesc(datetime_convert()),
1465                                                 intval(0));
1466
1467                                 // Should we quit and wait for the poller to be called as a cronjob?
1468                                 if (get_config("system", "worker_dont_fork"))
1469                                         return;
1470
1471                                 // Checking number of workers
1472                                 $workers = q("SELECT COUNT(*) AS `workers` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
1473
1474                                 // Get number of allowed number of worker threads
1475                                 $queues = intval(get_config("system", "worker_queues"));
1476
1477                                 if ($queues == 0)
1478                                         $queues = 4;
1479
1480                                 // If there are already enough workers running, don't fork another one
1481                                 if ($workers[0]["workers"] >= $queues)
1482                                         return;
1483
1484                                 // Now call the poller to execute the jobs that we just added to the queue
1485                                 $args = array("php", "include/poller.php", "no_cron");
1486                         }
1487
1488                         $args[0] = ((x($a->config,'php_path')) && (strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
1489                 }
1490
1491                 // add baseurl to args. cli scripts can't construct it
1492                 $args[] = $a->get_baseurl();
1493
1494                 for($x = 0; $x < count($args); $x ++)
1495                         $args[$x] = escapeshellarg($args[$x]);
1496
1497                 $cmdline = implode($args," ");
1498
1499                 if(get_config('system','proc_windows'))
1500                         proc_close(proc_open('cmd /c start /b ' . $cmdline,array(),$foo,dirname(__FILE__)));
1501                 else
1502                         proc_close(proc_open($cmdline." &",array(),$foo,dirname(__FILE__)));
1503         }
1504 }
1505
1506 if(! function_exists('current_theme')) {
1507         function current_theme(){
1508                 $app_base_themes = array('duepuntozero', 'dispy', 'quattro');
1509
1510                 $a = get_app();
1511
1512                 $page_theme = null;
1513
1514                 // Find the theme that belongs to the user whose stuff we are looking at
1515
1516                 if($a->profile_uid && ($a->profile_uid != local_user())) {
1517                         $r = q("select theme from user where uid = %d limit 1",
1518                                 intval($a->profile_uid)
1519                         );
1520                         if($r)
1521                                 $page_theme = $r[0]['theme'];
1522                 }
1523
1524                 // Allow folks to over-rule user themes and always use their own on their own site.
1525                 // This works only if the user is on the same server
1526
1527                 if($page_theme && local_user() && (local_user() != $a->profile_uid)) {
1528                         if(get_pconfig(local_user(),'system','always_my_theme'))
1529                                 $page_theme = null;
1530                 }
1531
1532 //              $mobile_detect = new Mobile_Detect();
1533 //              $is_mobile = $mobile_detect->isMobile() || $mobile_detect->isTablet();
1534                 $is_mobile = $a->is_mobile || $a->is_tablet;
1535
1536                 $standard_system_theme = ((isset($a->config['system']['theme'])) ? $a->config['system']['theme'] : '');
1537                 $standard_theme_name = ((isset($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $standard_system_theme);
1538
1539                 if($is_mobile) {
1540                         if(isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
1541                                 $system_theme = $standard_system_theme;
1542                                 $theme_name = $standard_theme_name;
1543                         }
1544                         else {
1545                                 $system_theme = ((isset($a->config['system']['mobile-theme'])) ? $a->config['system']['mobile-theme'] : $standard_system_theme);
1546                                 $theme_name = ((isset($_SESSION) && x($_SESSION,'mobile-theme')) ? $_SESSION['mobile-theme'] : $system_theme);
1547
1548                                 if($theme_name === '---') {
1549                                         // user has selected to have the mobile theme be the same as the normal one
1550                                         $system_theme = $standard_system_theme;
1551                                         $theme_name = $standard_theme_name;
1552
1553                                         if($page_theme)
1554                                                 $theme_name = $page_theme;
1555                                 }
1556                         }
1557                 }
1558                 else {
1559                         $system_theme = $standard_system_theme;
1560                         $theme_name = $standard_theme_name;
1561
1562                         if($page_theme)
1563                                 $theme_name = $page_theme;
1564                 }
1565
1566                 if($theme_name &&
1567                                 (file_exists('view/theme/' . $theme_name . '/style.css') ||
1568                                                 file_exists('view/theme/' . $theme_name . '/style.php')))
1569                         return($theme_name);
1570
1571                 foreach($app_base_themes as $t) {
1572                         if(file_exists('view/theme/' . $t . '/style.css')||
1573                                         file_exists('view/theme/' . $t . '/style.php'))
1574                                 return($t);
1575                 }
1576
1577                 $fallback = array_merge(glob('view/theme/*/style.css'),glob('view/theme/*/style.php'));
1578                 if(count($fallback))
1579                         return (str_replace('view/theme/','', substr($fallback[0],0,-10)));
1580
1581         }
1582 }
1583
1584 /*
1585  * Return full URL to theme which is currently in effect.
1586 * Provide a sane default if nothing is chosen or the specified theme does not exist.
1587 */
1588 if(! function_exists('current_theme_url')) {
1589         function current_theme_url() {
1590                 global $a;
1591
1592                 $t = current_theme();
1593
1594                 $opts = (($a->profile_uid) ? '?f=&puid=' . $a->profile_uid : '');
1595                 if (file_exists('view/theme/' . $t . '/style.php'))
1596                         return($a->get_baseurl() . '/view/theme/' . $t . '/style.pcss' . $opts);
1597
1598                 return($a->get_baseurl() . '/view/theme/' . $t . '/style.css');
1599         }
1600 }
1601
1602 if(! function_exists('feed_birthday')) {
1603         function feed_birthday($uid,$tz) {
1604
1605                 /**
1606                  *
1607                  * Determine the next birthday, but only if the birthday is published
1608                  * in the default profile. We _could_ also look for a private profile that the
1609                  * recipient can see, but somebody could get mad at us if they start getting
1610                  * public birthday greetings when they haven't made this info public.
1611                  *
1612                  * Assuming we are able to publish this info, we are then going to convert
1613                  * the start time from the owner's timezone to UTC.
1614                  *
1615                  * This will potentially solve the problem found with some social networks
1616                  * where birthdays are converted to the viewer's timezone and salutations from
1617                  * elsewhere in the world show up on the wrong day. We will convert it to the
1618                  * viewer's timezone also, but first we are going to convert it from the birthday
1619                  * person's timezone to GMT - so the viewer may find the birthday starting at
1620                  * 6:00PM the day before, but that will correspond to midnight to the birthday person.
1621                  *
1622                  */
1623
1624
1625                 $birthday = '';
1626
1627                 if(! strlen($tz))
1628                         $tz = 'UTC';
1629
1630                 $p = q("SELECT `dob` FROM `profile` WHERE `is-default` = 1 AND `uid` = %d LIMIT 1",
1631                                 intval($uid)
1632                 );
1633
1634                 if($p && count($p)) {
1635                         $tmp_dob = substr($p[0]['dob'],5);
1636                         if(intval($tmp_dob)) {
1637                                 $y = datetime_convert($tz,$tz,'now','Y');
1638                                 $bd = $y . '-' . $tmp_dob . ' 00:00';
1639                                 $t_dob = strtotime($bd);
1640                                 $now = strtotime(datetime_convert($tz,$tz,'now'));
1641                                 if($t_dob < $now)
1642                                         $bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
1643                                 $birthday = datetime_convert($tz,'UTC',$bd,ATOM_TIME);
1644                         }
1645                 }
1646
1647                 return $birthday;
1648         }
1649 }
1650
1651 if(! function_exists('is_site_admin')) {
1652         function is_site_admin() {
1653                 $a = get_app();
1654
1655                 $adminlist = explode(",", str_replace(" ", "", $a->config['admin_email']));
1656
1657                 //if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && ($a->user['email'] === $a->config['admin_email']))
1658                 if(local_user() && x($a->user,'email') && x($a->config,'admin_email') && in_array($a->user['email'], $adminlist))
1659                         return true;
1660                 return false;
1661         }
1662 }
1663
1664
1665 if(! function_exists('load_contact_links')) {
1666         function load_contact_links($uid) {
1667
1668                 $a = get_app();
1669
1670                 $ret = array();
1671
1672                 if(! $uid || x($a->contacts,'empty'))
1673                         return;
1674
1675                 $r = q("SELECT `id`,`network`,`url`,`thumb`, `rel` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 AND `thumb` != ''",
1676                                 intval($uid)
1677                 );
1678                 if(count($r)) {
1679                         foreach($r as $rr){
1680                                 $url = normalise_link($rr['url']);
1681                                 $ret[$url] = $rr;
1682                         }
1683                 } else
1684                         $ret['empty'] = true;
1685
1686                 $a->contacts = $ret;
1687                 return;
1688         }
1689 }
1690
1691 /**
1692 * returns querystring as string from a mapped array
1693 *
1694 * @param params Array
1695 * @return string
1696 */
1697 function build_querystring($params, $name=null) {
1698         $ret = "";
1699         foreach($params as $key=>$val) {
1700                 if(is_array($val)) {
1701                         if($name==null) {
1702                                 $ret .= build_querystring($val, $key);
1703                         } else {
1704                                 $ret .= build_querystring($val, $name."[$key]");
1705                         }
1706                 } else {
1707                         $val = urlencode($val);
1708                         if($name!=null) {
1709                                 $ret.=$name."[$key]"."=$val&";
1710                         } else {
1711                                 $ret.= "$key=$val&";
1712                         }
1713                 }
1714         }
1715         return $ret;
1716 }
1717
1718 function explode_querystring($query) {
1719         $arg_st = strpos($query, '?');
1720         if($arg_st !== false) {
1721                 $base = substr($query, 0, $arg_st);
1722                 $arg_st += 1;
1723         } else {
1724                 $base = '';
1725                 $arg_st = 0;
1726         }
1727
1728         $args = explode('&', substr($query, $arg_st));
1729         foreach($args as $k=>$arg) {
1730                 if($arg === '')
1731                         unset($args[$k]);
1732         }
1733         $args = array_values($args);
1734
1735         if(!$base) {
1736                 $base = $args[0];
1737                 unset($args[0]);
1738                 $args = array_values($args);
1739         }
1740
1741         return array(
1742                 'base' => $base,
1743                 'args' => $args,
1744         );
1745 }
1746
1747 /**
1748 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
1749 *
1750 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
1751 */
1752 function curPageURL() {
1753         $pageURL = 'http';
1754         if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
1755         $pageURL .= "://";
1756         if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
1757                 $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
1758         } else {
1759                 $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
1760         }
1761         return $pageURL;
1762 }
1763
1764 function random_digits($digits) {
1765         $rn = '';
1766         for($i = 0; $i < $digits; $i++) {
1767                 $rn .= rand(0,9);
1768         }
1769         return $rn;
1770 }
1771
1772 function get_server() {
1773         $server = get_config("system", "directory");
1774
1775         if ($server == "")
1776                 $server = "http://dir.friendi.ca";
1777
1778         return($server);
1779 }
1780
1781 function get_cachefile($file, $writemode = true) {
1782         $cache = get_itemcachepath();
1783
1784         if ((! $cache) || (! is_dir($cache)))
1785                 return("");
1786
1787         $subfolder = $cache."/".substr($file, 0, 2);
1788
1789         $cachepath = $subfolder."/".$file;
1790
1791         if ($writemode) {
1792                 if (!is_dir($subfolder)) {
1793                         mkdir($subfolder);
1794                         chmod($subfolder, 0777);
1795                 }
1796         }
1797
1798         return($cachepath);
1799 }
1800
1801 function clear_cache($basepath = "", $path = "") {
1802         if ($path == "") {
1803                 $basepath = get_itemcachepath();
1804                 $path = $basepath;
1805         }
1806
1807         if (($path == "") OR (!is_dir($path)))
1808                 return;
1809
1810         if (substr(realpath($path), 0, strlen($basepath)) != $basepath)
1811                 return;
1812
1813         $cachetime = (int)get_config('system','itemcache_duration');
1814         if ($cachetime == 0)
1815                 $cachetime = 86400;
1816
1817         if (is_writable($path)){
1818                 if ($dh = opendir($path)) {
1819                         while (($file = readdir($dh)) !== false) {
1820                                 $fullpath = $path."/".$file;
1821                                 if ((filetype($fullpath) == "dir") and ($file != ".") and ($file != ".."))
1822                                         clear_cache($basepath, $fullpath);
1823                                 if ((filetype($fullpath) == "file") and (filectime($fullpath) < (time() - $cachetime)))
1824                                         unlink($fullpath);
1825                         }
1826                         closedir($dh);
1827                 }
1828         }
1829 }
1830
1831 function get_itemcachepath() {
1832         // Checking, if the cache is deactivated
1833         $cachetime = (int)get_config('system','itemcache_duration');
1834         if ($cachetime < 0)
1835                 return "";
1836
1837         $itemcache = get_config('system','itemcache');
1838         if (($itemcache != "") AND is_dir($itemcache) AND is_writable($itemcache))
1839                 return($itemcache);
1840
1841         $temppath = get_temppath();
1842
1843         if ($temppath != "") {
1844                 $itemcache = $temppath."/itemcache";
1845                 if(!file_exists($itemcache) && !is_dir($itemcache)) {
1846                         mkdir($itemcache);
1847                 }
1848
1849                 if (is_dir($itemcache) AND is_writable($itemcache)) {
1850                         set_config("system", "itemcache", $itemcache);
1851                         return($itemcache);
1852                 }
1853         }
1854         return "";
1855 }
1856
1857 function get_lockpath() {
1858         $lockpath = get_config('system','lockpath');
1859         if (($lockpath != "") AND is_dir($lockpath) AND is_writable($lockpath))
1860                 return($lockpath);
1861
1862         $temppath = get_temppath();
1863
1864         if ($temppath != "") {
1865                 $lockpath = $temppath."/lock";
1866
1867                 if (!is_dir($lockpath))
1868                         mkdir($lockpath);
1869                 elseif (!is_writable($lockpath))
1870                         $lockpath = $temppath;
1871
1872                 if (is_dir($lockpath) AND is_writable($lockpath)) {
1873                         set_config("system", "lockpath", $lockpath);
1874                         return($lockpath);
1875                 }
1876         }
1877         return "";
1878 }
1879
1880 function get_temppath() {
1881         $a = get_app();
1882
1883         $temppath = get_config("system","temppath");
1884         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath))
1885                 return($temppath);
1886
1887         $temppath = sys_get_temp_dir();
1888         if (($temppath != "") AND is_dir($temppath) AND is_writable($temppath)) {
1889                 $temppath .= "/".$a->get_hostname();
1890                 if (!is_dir($temppath))
1891                         mkdir($temppath);
1892
1893                 if (is_dir($temppath) AND is_writable($temppath)) {
1894                         set_config("system", "temppath", $temppath);
1895                         return($temppath);
1896                 }
1897         }
1898
1899         return("");
1900 }
1901
1902 function set_template_engine(&$a, $engine = 'internal') {
1903 // This function is no longer necessary, but keep it as a wrapper to the class method
1904 // to avoid breaking themes again unnecessarily
1905
1906         $a->set_template_engine($engine);
1907 }
1908
1909 if(!function_exists('exif_imagetype')) {
1910         function exif_imagetype($file) {
1911                 $size = getimagesize($file);
1912                 return($size[2]);
1913         }
1914 }
1915
1916 function validate_include(&$file) {
1917         $orig_file = $file;
1918
1919         $file = realpath($file);
1920
1921         if (strpos($file, getcwd()) !== 0)
1922                 return false;
1923
1924         $file = str_replace(getcwd()."/", "", $file, $count);
1925         if ($count != 1)
1926                 return false;
1927
1928         if ($orig_file !== $file)
1929                 return false;
1930
1931         $valid = false;
1932         if (strpos($file, "include/") === 0)
1933                 $valid = true;
1934
1935         if (strpos($file, "addon/") === 0)
1936                 $valid = true;
1937
1938         if (!$valid)
1939                 return false;
1940
1941         return true;
1942 }