nucleus/libs/SKIN.php

   1 <?php
   2 /*
   3  * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)
   4  * Copyright (C) 2002-2009 The Nucleus Group
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  * (see nucleus/documentation/index.html#license for more info)
  11  */
  12 /**
  13  * Class representing a skin
  14  *
  15  * @license http://nucleuscms.org/license.txt GNU General Public License
  16  * @copyright Copyright (C) 2002-2009 The Nucleus Group
  17  * @version $Id: SKIN.php 1813 2012-05-02 14:41:57Z sakamocchi $
  18  */
  19
  20 if ( !function_exists('requestVar') )
  21 {
  22         exit;
  23 }
  24
  25 class Skin
  26 {
  27         // after creating a SKIN object, evaluates to true when the skin exists
  28         private $valid;
  29
  30         // skin characteristics. Use the getXXX methods rather than accessing directly
  31         private $id;
  32         private $description;
  33         private $contentType;
  34         private $includeMode;           // either 'normal' or 'skindir'
  35         private $includePrefix;
  36         private $name;
  37
  38         /* action class */
  39         private $action_class;
  40         private $event_identifier;
  41
  42         /**
  43          * Skin::__construct()
  44          * Constructor for a new SKIN object
  45          *
  46          * @param       integer $id                                     id of the skin
  47          * @param       string  $action_class           name of class extended from BaseActions
  48          * @param       string  $event_identifier       event identifier. for example, InitAdminSkinParse if AdminSkin is used
  49          * @return      void
  50          */
  51         public function __construct($id, $action_class='Actions', $event_identifier='Skin')
  52         {
  53                 global $DIR_LIBS;
  54
  55                 $this->id = (integer) $id;
  56
  57                 /*
  58                  * NOTE: include needed action class
  59                  */
  60                 if ( $action_class != 'Actions' )
  61                 {
  62                         if ( !class_exists($action_class, FALSE)
  63                           && (!file_exists("{$DIR_LIBS}{$action_class}.php")
  64                            || !include("{$DIR_LIBS}{$action_class}.php")) )
  65                         {
  66                                 return;
  67                         }
  68                 }
  69                 else
  70                 {
  71                         if ( !class_exists('Actions', FALSE)
  72                           && (!file_exists("{$DIR_LIBS}ACTIONS.php")
  73                            || !include("{$DIR_LIBS}ACTIONS.php")) )
  74                         {
  75                                 return;
  76                         }
  77                 }
  78
  79                 $this->action_class = $action_class;
  80                 $this->event_identifier = $event_identifier;
  81
  82                 // read skin name/description/content type
  83                 $query = "SELECT * FROM %s WHERE sdnumber=%d;";
  84                 $query = sprintf($query, sql_table('skin_desc'), $this->id);
  85                 $res = DB::getRow($query);
  86
  87                 $this->valid = !empty($res);
  88                 if ( $this->valid )
  89                 {
  90                         $this->name = $res['sdname'];
  91                         $this->description = $res['sddesc'];
  92                         $this->contentType = $res['sdtype'];
  93                         $this->includeMode = $res['sdincmode'];
  94                         $this->includePrefix = $res['sdincpref'];
  95                 }
  96
  97                 return;
  98         }
  99
 100         /**
 101          * Skin::getID()
 102          * Get SKIN id
 103          *
 104          * @param       void
 105          * @return      integer id for this skin instance
 106          */
 107         public function getID()
 108         {
 109                 return (integer) $this->id;
 110         }
 111
 112         /**
 113          * Skin::isValid()
 114          *
 115          * @param       void
 116          * @return      boolean
 117          */
 118         public function isValid()
 119         {
 120                 return (boolean) $this->valid;
 121         }
 122
 123         /**
 124          * Skin::getName()
 125          * Get SKIN name
 126          *
 127          * @param       void
 128          * @return      string  name of this skin instance
 129          */
 130         public function getName()
 131         {
 132                 return (string) $this->name;
 133         }
 134
 135         /**
 136          * Skin::getDescription()
 137          * Get SKIN description
 138          *
 139          * @param       void
 140          * @return      string  description of this skin instance
 141          */
 142         public function getDescription()
 143         {
 144                 return (string) $this->description;
 145         }
 146
 147         /**
 148          * Skin::getContentType()
 149          * Get SKIN content type
 150          * e.g. text/xml, text/html, application/atom+xml
 151          *
 152          * @param       void
 153          * @return      string  name of this skin instance
 154          */
 155         public function getContentType()
 156         {
 157                 return (string) $this->contentType;
 158         }
 159
 160         /**
 161          * Skin::getIncludeMode()
 162          * Get include mode of the SKIN
 163          *
 164          * Returns either 'normal' or 'skindir':
 165          * 'normal': if a all data of the skin can be found in the databse
 166          * 'skindir': if the skin has data in the it's skin driectory
 167          *
 168          * @param       void
 169          * @return      string  normal/skindir
 170          */
 171         public function getIncludeMode()
 172         {
 173                 return (string) $this->includeMode;
 174         }
 175
 176         /**
 177          * Skin::getIncludePrefix()
 178          * Get include prefix of the SKIN
 179          *
 180          * Get name of the subdirectory (with trailing slash) where
 181          * the files of the current skin can be found (e.g. 'default/')
 182          *
 183          * @param       void
 184          * @return      string  include prefix of this skin instance
 185          */
 186         public function getIncludePrefix()
 187         {
 188                 return (string) $this->includePrefix;
 189         }
 190
 191         /**
 192          * Skin::exists()
 193          * Checks if a skin with a given shortname exists
 194          *
 195          * @static
 196          * @param       string  $name   Skin short name
 197          * @return      integer number of skins with the given ID
 198          */
 199         static public function exists($name)
 200         {
 201                 $query = "SELECT COUNT(*) AS result FROM %s WHERE sdname=%s;";
 202                 $query = sprintf($query, sql_table('skin_desc'), DB::quoteValue($name));
 203                 return (DB::getValue($query) > 0);
 204         }
 205
 206         /**
 207          * Skin::existsID()
 208          * Checks if a skin with a given ID exists
 209          *
 210          * @static
 211          * @param       string  $id     Skin ID
 212          * @return      integer number of skins with the given ID
 213          */
 214         static public function existsID($id)
 215         {
 216                 $query = "SELECT COUNT(*) AS result FROM %s WHERE sdnumber=%d;";
 217                 $query = sprintf($query, sql_table('skin_desc'), (integer) $id);
 218                 return (DB::getValue($query) > 0);
 219         }
 220
 221         /**
 222          * Skin::createFromName()
 223          * Returns a skin given its shortname
 224          *
 225          * @static
 226          * @param       string  $name   Skin shortname
 227          * @return      object instance of Skin class
 228          */
 229         static public function createFromName($name)
 230         {
 231                 return new SKIN(SKIN::getIdFromName($name));
 232         }
 233
 234         /**
 235          * Skin::getIdFromName()
 236          * Returns a skin ID given its shortname
 237          *
 238          * @static
 239          * @param       string  $name   Skin shortname
 240          * @return      integer Skin ID
 241          */
 242         static public function getIdFromName($name)
 243         {
 244                 $query = "SELECT sdnumber FROM %s WHERE sdname=%s;";
 245                 $query = sprintf($query, sql_table('skin_desc'), DB::quoteValue($name));
 246                 return DB::getValue($query);
 247         }
 248
 249         /**
 250          * Skin::getNameFromId()
 251          * Returns a skin shortname given its ID
 252          *
 253          * @static
 254          * @param       string  $name
 255          * @return      string  Skin short name
 256          */
 257         static public function getNameFromId($id)
 258         {
 259                 $query = "SELECT sdname AS result FROM %s WHERE sdnumber=%d;";
 260                 $query = sprintf($query, sql_table('skin_desc'), (integer) $id);
 261                 return DB::getValue($query);
 262         }
 263
 264         /**
 265          * SKIN::createNew()
 266          * Creates a new skin, with the given characteristics.
 267          *
 268          * @static
 269          * @param       String  $name   value for nucleus_skin.sdname
 270          * @param       String  $desc   value for nucleus_skin.sddesc
 271          * @param       String  $type   value for nucleus_skin.sdtype
 272          * @param       String  $includeMode    value for nucleus_skin.sdinclude
 273          * @param       String  $includePrefix  value for nucleus_skin.sdincpref
 274          * @return      Integer ID for just inserted record
 275          */
 276         public function createNew($name, $desc, $type = 'text/html', $includeMode = 'normal', $includePrefix = '')
 277         {
 278                 global $manager;
 279
 280                 $manager->notify(
 281                         'PreAddSkin',
 282                         array(
 283                                 'name' => &$name,
 284                                 'description' => &$desc,
 285                                 'type' => &$type,
 286                                 'includeMode' => &$includeMode,
 287                                 'includePrefix' => &$includePrefix
 288                         )
 289                 );
 290
 291                 $query = "INSERT INTO %s (sdname, sddesc, sdtype, sdincmode, sdincpref) VALUES (%s, %s, %s, %s, %s);";
 292                 $sdname         = DB::quoteValue($name);
 293                 $sddesc         = DB::quoteValue($desc);
 294                 $sdtype         = DB::quoteValue($type);
 295                 $sdincmode      = DB::quoteValue($includeMode);
 296                 $sdincpref      = DB::quoteValue($includePrefix);
 297                 $query = sprintf($query, sql_table('skin_desc'), $sdname, $sddesc, $sdtype, $sdincmode, $sdincpref);
 298                 DB::execute($query);
 299                 $newid = DB::getInsertId();
 300
 301                 $manager->notify(
 302                         'PostAddSkin',
 303                         array(
 304                                 'skinid'                => $newid,
 305                                 'name'                  => $name,
 306                                 'description'   => $desc,
 307                                 'type'                  => $type,
 308                                 'includeMode'   => $includeMode,
 309                                 'includePrefix' => $includePrefix
 310                         )
 311                 );
 312                 return $newid;
 313         }
 314
 315         /**
 316          * Skin::parse()
 317          * Parse a SKIN
 318          *
 319          * @param       string  $type
 320          * @param       string  $path   path to file if using fileparser
 321          * @return      void
 322          */
 323         public function parse($type, $path='')
 324         {
 325                 global $currentSkinName, $manager, $CONF, $DIR_NUCLEUS;
 326
 327                 $manager->notify("Init{$this->event_identifier}Parse", array('skin' => &$this, 'type' => $type));
 328
 329                 // include skin locale file for <%text%> tag if useable
 330                 $this->includeTranslation();
 331
 332                 // set output type
 333                 sendContentType($this->getContentType(), 'skin');
 334
 335                 /* FIX: should be obsoleted */
 336                 $currentSkinName = $this->getName();
 337
 338                 // retrieve contents
 339                 $contents = FALSE;
 340                 if ( $type != 'fileparse' )
 341                 {
 342                         $contents = $this->getContentFromDB($type);
 343                 }
 344                 else if ( $path !== ''  && i18n::strpos(realpath($path), realpath("$DIR_NUCLEUS/../")) == 0 )
 345                 {
 346                         $contents = $this->getContentFromFile($path);
 347                 }
 348                 // use base skin if this skin does not have contents
 349                 if ( $contents === FALSE )
 350                 {
 351                         $defskin = new SKIN($CONF['BaseSkin']);
 352                         $contents = $defskin->getContentFromDB($type);
 353                         if ( !$contents )
 354                         {
 355                                 echo _ERROR_SKIN;
 356                                 return;
 357                         }
 358                 }
 359
 360                 $manager->notify("Pre{$this->event_identifier}Parse", array('skin' => &$this, 'type' => $type, 'contents' => &$contents));
 361
 362                 // set IncludeMode properties of parser
 363                 Parser::setProperty('IncludeMode', $this->getIncludeMode());
 364                 Parser::setProperty('IncludePrefix', $this->getIncludePrefix());
 365
 366                 // call action handler
 367                 $action_class = $this->action_class;
 368                 $handler = new $action_class($type);
 369
 370                 // register action handler to parser
 371                 $actions = $handler->getDefinedActions($type);
 372                 $parser = new Parser($actions, $handler);
 373
 374                 $handler->setParser($parser);
 375                 $handler->setSkin($this);
 376                 $parser->parse($contents);
 377
 378                 $manager->notify("Post{$this->event_identifier}Parse", array('skin' => &$this, 'type' => $type));
 379                 return;
 380         }
 381
 382         /**
 383          * Skin::getContentFromDB()
 384          *
 385          * @param       string  $skintype       skin type
 386          * @return      string  content for the skin type
 387          */
 388         public function getContentFromDB($skintype)
 389         {
 390                 $query = "SELECT scontent FROM %s WHERE sdesc=%d and stype=%s;";
 391                 $query = sprintf($query, sql_table('skin'), (integer) $this->id, DB::quoteValue($skintype));
 392                 $res = DB::getValue($query);
 393
 394                 return $res ? $res : '';
 395         }
 396
 397         /**
 398          * Skin::getContentFromFile()
 399          *
 400          * @param       string  $fullpath       fullpath to the file to parse
 401          * @return      mixed   file contents or FALSE
 402          */
 403         public function getContentFromFile($fullpath)
 404         {
 405                 $fsize = filesize($fullpath);
 406                 if ( $fsize <= 0 )
 407                 {
 408                         return;
 409                 }
 410
 411                 $fd = fopen ($fullpath, 'r');
 412                 if ( $fd === FALSE )
 413                 {
 414                         return FALSE;
 415                 }
 416
 417                 $contents = fread ($fd, $fsize);
 418                 if ( $contents === FALSE )
 419                 {
 420                         return FALSE;
 421                 }
 422
 423                 fclose ($fd);
 424                 return $contents;
 425         }
 426
 427         /**
 428          * SKIN::update()
 429          * Updates the contents for one part of the skin in the database
 430          *
 431          * @param       string  $type type of the skin part (e.g. index, item, search ...)
 432          * @param       string  $content new content for this skin part
 433          * @return      void
 434          *
 435          */
 436         public function update($type, $content)
 437         {
 438                 global $manager;
 439
 440                 $query = "SELECT sdesc FROM %s WHERE stype=%s and sdesc=%d;";
 441                 $query = sprintf($query, sql_table('skin'), DB::quoteValue($type), (integer) $this->id);
 442                 $res = DB::getValue($query);
 443
 444                 $skintypeexists = !empty($res);
 445                 $skintypevalue = ($content == true);
 446
 447                 if( $skintypevalue && $skintypeexists )
 448                 {
 449                         $data = array(
 450                                 'skinid'        =>  $this->id,
 451                                 'type'          =>  $type,
 452                                 'content'       => &$content
 453                         );
 454
 455                         // PreUpdateSkinPart event
 456                         $manager->notify("PreUpdate{{$this->event_identifier}}Part", $data);
 457                 }
 458                 else if( $skintypevalue && !$skintypeexists )
 459                 {
 460                         $data = array(
 461                                 'skinid' => $this->id,
 462                                 'type' => $type,
 463                                 'content' => &$content
 464                         );
 465
 466                         $manager->notify("PreAdd{$this->event_identifier}Part", $data);
 467                 }
 468                 else if( !$skintypevalue && $skintypeexists )
 469                 {
 470                         $data = array(
 471                                 'skinid' => $this->id,
 472                                 'type' => $type
 473                         );
 474
 475                         $manager->notify("PreDelete{$this->event_identifier}Part", $data);
 476                 }
 477
 478                 // delete old thingie
 479                 $query = "DELETE FROM %s WHERE stype=%s and sdesc=%d";
 480                 $query = sprintf($query, sql_table('skin'), DB::quoteValue($type), (integer) $this->id);
 481                 DB::execute($query);
 482
 483                 // write new thingie
 484                 if ( $content )
 485                 {
 486                         $query = "INSERT INTO %s (scontent, stype, sdesc) VALUE (%s, %s, %d)";
 487                         $query = sprintf($query, sql_table('skin'), DB::quoteValue($content), DB::quoteValue($type), (integer) $this->id);
 488                         DB::execute($query);
 489                 }
 490
 491                 if( $skintypevalue && $skintypeexists )
 492                 {
 493                         $data = array(
 494                                 'skinid'        => $this->id,
 495                                 'type'          => $type,
 496                                 'content'       => &$content
 497                         );
 498
 499                         // PostUpdateSkinPart event
 500                         $manager->notify("PostUpdate{$this->event_identifier}Part", $data);
 501                 }
 502                 else if( $skintypevalue && (!$skintypeexists) )
 503                 {
 504                         $data = array(
 505                                 'skinid'        => $this->id,
 506                                 'type'          => $type,
 507                                 'content'       => &$content
 508                         );
 509
 510                         // PostAddSkinPart event
 511                         $manager->notify("PostAdd{$this->event_identifier}Part", $data);
 512                 }
 513                 else if( (!$skintypevalue) && $skintypeexists )
 514                 {
 515                         $data = array(
 516                                 'skinid'        => $this->id,
 517                                 'type'          => $type
 518                         );
 519
 520                         $manager->notify("PostDelete{$this->event_identifier}Part", $data);
 521                 }
 522                 return;
 523         }
 524
 525         /**
 526          * Skin::deleteAllParts()
 527          * Deletes all skin parts from the database
 528          *
 529          * @param       void
 530          * @return      void
 531          */
 532         public function deleteAllParts()
 533         {
 534                 $query = "DELETE FROM %s WHERE sdesc=%d;";
 535                 $query = sprintf($query, sql_table('skin'), (integer) $this->id);
 536                 DB::execute($query);
 537         }
 538
 539         /**
 540          * Skin::updateGeneralInfo()
 541          * Updates the general information about the skin
 542          *
 543          * @param       string  $name                   name of the skin
 544          * @param       string  $desc                   description of the skin
 545          * @param       string  $type                   type of the skin
 546          * @param       string  $includeMode    include mode of the skin
 547          * @param       string  $includePrefix  include prefix of the skin
 548          * @return      void
 549          */
 550         public function updateGeneralInfo($name, $desc, $type = 'text/html', $includeMode = 'normal', $includePrefix = '')
 551         {
 552                 $name                   = DB::quoteValue($name);
 553                 $desc                   = DB::quoteValue($desc);
 554                 $type                   = DB::quoteValue($type);
 555                 $includeMode    = DB::quoteValue($includeMode);
 556                 $includePrefix  = DB::quoteValue($includePrefix);
 557
 558                 $query ="UPDATE %s SET sdname=%s, sddesc=%s, sdtype=%s, sdincmode=%s, sdincpref=%s WHERE sdnumber=%d";
 559                 $query = sprintf($query, sql_table('skin_desc'), $name, $desc, $type, $includeMode, $includePrefix, (integer) $this->id);
 560
 561                 DB::execute($query);
 562                 return;
 563         }
 564
 565         /**
 566          * Skin::includeTranslation()
 567          *
 568          * @param       void
 569          * @return      void
 570          */
 571         private function includeTranslation()
 572         {
 573                 global $DIR_SKINS;
 574
 575                 $locale = i18n::get_current_locale() . '.' . i18n::get_current_charset();
 576
 577                 if( $this->includeMode == "normal" )
 578                 {
 579                         $filename = "./locales/{$locale}.php";
 580                 }
 581                 else if( $this->includeMode == "skindir" )
 582                 {
 583                         if ( $this->includePrefix == '' )
 584                         {
 585                                 $filename = "{$DIR_SKINS}locales/{$locale}.php";
 586                         }
 587                         else
 588                         {
 589                                 $filename = "{$DIR_SKINS}{$this->includePrefix}locales/{$locale}.php";
 590                         }
 591                 }
 592                 else
 593                 {
 594                         return;
 595                 }
 596
 597                 if ( !file_exists($filename) )
 598                 {
 599                         return;
 600                 }
 601
 602                 include_once($filename);
 603
 604                 return;
 605         }
 606
 607         /**
 608          * Skin::getDefaultTypes()
 609          *
 610          * @param       string  void
 611          * @return      array   default skin types
 612          */
 613         public function getDefaultTypes()
 614         {
 615                 return call_user_func(array($this->action_class, 'getDefaultSkinTypes'));
 616         }
 617
 618         /**
 619          * Skin::getAvailableTypes()
 620          *
 621          * @param       string  void
 622          * @return      array   registered skin types
 623          */
 624         public function getAvailableTypes()
 625         {
 626                 $default_skintypes = $this->getDefaultTypes();
 627                 $query = "SELECT stype FROM %s WHERE sdesc=%d;";
 628                 $query = sprintf($query, sql_table('skin'), (integer) $this->id);
 629
 630                 /* NOTE: force to put default types in the beginning */
 631                 $in_default = array();
 632                 $no_default = array();
 633
 634                 $res = DB::getResult($query);
 635                 foreach ( $res as $row )
 636                 {
 637                         if ( !array_key_exists($row['stype'], $default_skintypes) )
 638                         {
 639                                 $no_default[$row['stype']] = FALSE;
 640                         }
 641                         else
 642                         {
 643                                 $in_default[$row['stype']] = $default_skintypes[$row['stype']];
 644                         }
 645                 }
 646
 647                 return array_merge($in_default, $no_default);
 648         }
 649
 650         /**
 651          * Skin::getAllowedActionsForType()
 652          * Get the allowed actions for a skin type
 653          * returns an array with the allowed actions
 654          *
 655          * @param       string  $type   type of the skin
 656          * @return      array   allowed action types
 657          */
 658         public function getAllowedActionsForType($type)
 659         {
 660                 return call_user_func(array($this->action_class, 'getDefinedActions'), $type);
 661         }
 662
 663 }