<?php /* vim: set expandtab tabstop=4 shiftwidth=4: */ // // +----------------------------------------------------------------------+ // | PHP Version 4 | // +----------------------------------------------------------------------+ // | Copyright (c) 1997-2002 The PHP Group | // +----------------------------------------------------------------------+ // | This source file is subject to version 2.02 of the PHP license, | // | that is bundled with this package in the file LICENSE, and is | // | available at through the world-wide-web at | // | http://www.php.net/license/3_0.txt. | // | If you did not receive a copy of the PHP license and are unable to | // | obtain it through the world-wide-web, please send a note to | // | license@php.net so we can mail you a copy immediately. | // +----------------------------------------------------------------------+ // | Authors: Alexander Zhukov <alex@veresk.ru> Original port from Python | // | Authors: Harry Fuecks <hfuecks@phppatterns.com> Port to PEAR + more | // | Authors: Many @ Sitepointforums Advanced PHP Forums | // +----------------------------------------------------------------------+ // // $Id: States.php 3188 2012-07-12 12:13:23Z ctrlaltca $ // /** * Parsing states. * @package System.Security.SafeHtml */ /** * Define parser states */ /*define('TSAX3_STATE_STOP', 0); define('TSAX3_STATE_START', 1); define('TSAX3_STATE_TAG', 2); define('TSAX3_STATE_OPENING_TAG', 3); define('TSAX3_STATE_CLOSING_TAG', 4); define('TSAX3_STATE_ESCAPE', 6); define('TSAX3_STATE_JASP', 7); define('TSAX3_STATE_PI', 8); */ /** * StartingState searches for the start of any XML tag * @package System.Security.SafeHtml * @access protected */ class TSax3_StartingState { /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_TAG * @access protected */ function parse(&$context) { $data = $context->scanUntilString('<'); if ($data != '') { $context->handler_object_data-> {$context->handler_method_data}($context->htmlsax, $data); } $context->IgnoreCharacter(); return TSax3_StateParser::TSAX3_STATE_TAG; } } /** * Decides which state to move one from after StartingState * @package System.Security.SafeHtml * @access protected */ class TSax3_TagState { /** * @param TSax3_StateParser subclass * @return constant the next state to move into * @access protected */ function parse(&$context) { switch($context->ScanCharacter()) { case '/': return TSax3_StateParser::TSAX3_STATE_CLOSING_TAG; break; case '?': return TSax3_StateParser::TSAX3_STATE_PI; break; case '%': return TSax3_StateParser::TSAX3_STATE_JASP; break; case '!': return TSax3_StateParser::TSAX3_STATE_ESCAPE; break; default: $context->unscanCharacter(); return TSax3_StateParser::TSAX3_STATE_OPENING_TAG; } } } /** * Dealing with closing XML tags * @package System.Security.SafeHtml * @access protected */ class TSax3_ClosingTagState { /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_START * @access protected */ function parse(&$context) { $tag = $context->scanUntilCharacters('/>'); if ($tag != '') { $char = $context->scanCharacter(); if ($char == '/') { $char = $context->scanCharacter(); if ($char != '>') { $context->unscanCharacter(); } } $context->handler_object_element-> {$context->handler_method_closing}($context->htmlsax, $tag, FALSE); } return TSax3_StateParser::TSAX3_STATE_START; } } /** * Dealing with opening XML tags * @package System.Security.SafeHtml * @access protected */ class TSax3_OpeningTagState { /** * Handles attributes * @param string attribute name * @param string attribute value * @return void * @access protected * @see TSax3_AttributeStartState */ function parseAttributes(&$context) { $Attributes = array(); $context->ignoreWhitespace(); $attributename = $context->scanUntilCharacters("=/> \n\r\t"); while ($attributename != '') { $attributevalue = NULL; $context->ignoreWhitespace(); $char = $context->scanCharacter(); if ($char == '=') { $context->ignoreWhitespace(); $char = $context->ScanCharacter(); if ($char == '"') { $attributevalue= $context->scanUntilString('"'); $context->IgnoreCharacter(); } else if ($char == "'") { $attributevalue = $context->scanUntilString("'"); $context->IgnoreCharacter(); } else { $context->unscanCharacter(); $attributevalue = $context->scanUntilCharacters("> \n\r\t"); } } else if ($char !== NULL) { $attributevalue = NULL; $context->unscanCharacter(); } $Attributes[$attributename] = $attributevalue; $context->ignoreWhitespace(); $attributename = $context->scanUntilCharacters("=/> \n\r\t"); } return $Attributes; } /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_START * @access protected */ function parse(&$context) { $tag = $context->scanUntilCharacters("/> \n\r\t"); if ($tag != '') { $this->attrs = array(); $Attributes = $this->parseAttributes($context); $char = $context->scanCharacter(); if ($char == '/') { $char = $context->scanCharacter(); if ($char != '>') { $context->unscanCharacter(); } $context->handler_object_element-> {$context->handler_method_opening}($context->htmlsax, $tag, $Attributes, TRUE); $context->handler_object_element-> {$context->handler_method_closing}($context->htmlsax, $tag, TRUE); } else { $context->handler_object_element-> {$context->handler_method_opening}($context->htmlsax, $tag, $Attributes, FALSE); } } return TSax3_StateParser::TSAX3_STATE_START; } } /** * Deals with XML escapes handling comments and CDATA correctly * @package System.Security.SafeHtml * @access protected */ class TSax3_EscapeState { /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_START * @access protected */ function parse(&$context) { $char = $context->ScanCharacter(); if ($char == '-') { $char = $context->ScanCharacter(); if ($char == '-') { $context->unscanCharacter(); $context->unscanCharacter(); $text = $context->scanUntilString('-->'); $text .= $context->scanCharacter(); $text .= $context->scanCharacter(); } else { $context->unscanCharacter(); $text = $context->scanUntilString('>'); } } else if ( $char == '[') { $context->unscanCharacter(); $text = $context->scanUntilString(']>'); $text.= $context->scanCharacter(); } else { $context->unscanCharacter(); $text = $context->scanUntilString('>'); } $context->IgnoreCharacter(); if ($text != '') { $context->handler_object_escape-> {$context->handler_method_escape}($context->htmlsax, $text); } return TSax3_StateParser::TSAX3_STATE_START; } } /** * Deals with JASP/ASP markup * @package System.Security.SafeHtml * @access protected */ class TSax3_JaspState { /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_START * @access protected */ function parse(&$context) { $text = $context->scanUntilString('%>'); if ($text != '') { $context->handler_object_jasp-> {$context->handler_method_jasp}($context->htmlsax, $text); } $context->IgnoreCharacter(); $context->IgnoreCharacter(); return TSax3_StateParser::TSAX3_STATE_START; } } /** * Deals with XML processing instructions * @package System.Security.SafeHtml * @access protected */ class TSax3_PiState { /** * @param TSax3_StateParser subclass * @return constant TSAX3_STATE_START * @access protected */ function parse(&$context) { $target = $context->scanUntilCharacters(" \n\r\t"); $data = $context->scanUntilString('?>'); if ($data != '') { $context->handler_object_pi-> {$context->handler_method_pi}($context->htmlsax, $target, $data); } $context->IgnoreCharacter(); $context->IgnoreCharacter(); return TSax3_StateParser::TSAX3_STATE_START; } }