367 lines
11 KiB
PHP
367 lines
11 KiB
PHP
<?php
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/*
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+--------------------------------------------------------------------------
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| Invision Power Board
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| =============================================
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| by Matthew Mecham
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| (c) 2001 - 2006 Invision Power Services, Inc.
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| http://www.invisionpower.com
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| =============================================
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| Web: http://www.invisionboard.com
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| Licence Info: http://www.invisionboard.com/?license
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+---------------------------------------------------------------------------
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| > $Date: 2006-08-01 17:02:55 +0100 (Tue, 01 Aug 2006) $
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| > $Revision: 425 $
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| > $Author: matt $
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+---------------------------------------------------------------------------
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| > AJAX Functions
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| > Module written by Matt Mecham
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| > Date started: Wednesday 2nd August 2006
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+--------------------------------------------------------------------------
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*/
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class class_ajax
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{
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/**
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* Global IPS class
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*/
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var $ipsclass;
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/**
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* XML output
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*/
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var $xml_output;
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/**
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* XML Header
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*/
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var $xml_header;
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/**
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* Character sets
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*/
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var $decode_charsets = array( 'iso-8859-1' => 'ISO-8859-1',
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'iso8859-1' => 'ISO-8859-1',
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'iso-8859-15' => 'ISO-8859-15',
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'iso8859-15' => 'ISO-8859-15',
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'utf-8' => 'UTF-8',
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'cp866' => 'cp866',
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'ibm866' => 'cp866',
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'cp1251' => 'windows-1251',
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'windows-1251' => 'windows-1251',
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'win-1251' => 'windows-1251',
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'cp1252' => 'windows-1252',
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'windows-1252' => 'windows-1252',
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'koi8-r' => 'KOI8-R',
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'koi8-ru' => 'KOI8-R',
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'koi8r' => 'KOI8-R',
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'big5' => 'BIG5',
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'gb2312' => 'GB2312',
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'big5-hkscs' => 'BIG5-HKSCS',
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'shift_jis' => 'Shift_JIS',
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'sjis' => 'Shift_JIS',
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'euc-jp' => 'EUC-JP',
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'eucjp' => 'EUC-JP' );
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/*-------------------------------------------------------------------------*/
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// Initialize the class
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/*-------------------------------------------------------------------------*/
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/**
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* INIT the class
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*/
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function class_init()
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{
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$this->xml_header = "<?xml version=\"1.0\" encoding=\"{$this->ipsclass->vars['gb_char_set']}\"?".'>';
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}
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/*-------------------------------------------------------------------------*/
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// Convert and make safe an incoming string
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/*-------------------------------------------------------------------------*/
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/**
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* Convert and make safe an incoming string
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*/
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function convert_and_make_safe( $value, $parse_incoming=1 )
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{
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$value = rawurldecode( $value );
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$value = $this->convert_unicode( $value );
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// This is apparently not needed with the convert_unicode changes I made
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$value = $this->convert_html_entities( $value );
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if( $parse_incoming OR ( strtolower($this->ipsclass->vars['gb_char_set']) != 'iso-8859-1' &&
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strtolower($this->ipsclass->vars['gb_char_set']) != 'utf-8' ) )
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{
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$value = $this->ipsclass->parse_clean_value( $value );
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}
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return $value;
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}
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/*-------------------------------------------------------------------------*/
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// make string XML safe
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/*-------------------------------------------------------------------------*/
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/**
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* Make a string safe for XML transport
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*/
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function _make_safe_for_xml( $t )
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{
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return str_replace( '&#39;', ''', htmlspecialchars( $t ) );
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}
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/*-------------------------------------------------------------------------*/
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// Error handler
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/*-------------------------------------------------------------------------*/
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/**
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* Print an error
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*/
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function error_handler()
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{
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@header( "Content-type: text/xml" );
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$this->print_nocache_headers();
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$this->xml_output = $this->xml_header."\r\n<errors>\r\n";
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$this->xml_output .= "<error><message>You must be logged in to access this feature</message></error>\r\n";
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$this->xml_output .= "</errors>";
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print $this->xml_output;
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exit();
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}
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/*-------------------------------------------------------------------------*/
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// Return NOTHING :o
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/*-------------------------------------------------------------------------*/
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/**
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* Return a NULL result
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*/
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function return_null($val=0)
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{
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@header( "Content-type: text/xml" );
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$this->print_nocache_headers();
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print $this->xml_header."\r\n<null>{$val}</null>";
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exit();
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}
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/*-------------------------------------------------------------------------*/
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// Return string
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/*-------------------------------------------------------------------------*/
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/**
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* Return a string
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*/
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function return_string($string)
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{
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@header( "Content-type: text/plain;charset={$this->ipsclass->vars['gb_char_set']}" );
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$this->print_nocache_headers();
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print $string;
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exit();
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}
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/*-------------------------------------------------------------------------*/
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// Return HTML
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/*-------------------------------------------------------------------------*/
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/**
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* Return a HTML
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*/
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function return_html($string)
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{
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//-----------------------------------------
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// Stop one from removing cookie protection
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//-----------------------------------------
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$string = ( $string ) ? $string : '<!--nothing-->';
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$string = preg_replace( "#htmldocument\.prototype#is", "HTMLDocument_prototype", $string );
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// Fix IE bugs
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$string = str_replace( "§", "&sect", $string );
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if ( strtolower( $this->ipsclass->vars['gb_char_set'] ) == 'iso-8859-1' )
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{
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$string = str_replace( "ì", "“", $string );
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$string = str_replace( "î", "”", $string );
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}
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// Other stuff
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$string = str_replace( "<#IMG_DIR#>", $this->ipsclass->skin['_imagedir'], $string );
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$string = str_replace( "<#EMO_DIR#>", $this->ipsclass->skin['_emodir'] , $string );
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@header( "Content-type: text/html;charset=".$this->ipsclass->vars['gb_char_set'] );
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$this->print_nocache_headers();
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print $string;
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exit();
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}
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/*-------------------------------------------------------------------------*/
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// Print no cache headers
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/*-------------------------------------------------------------------------*/
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/**
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* Print nocache headers
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*/
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function print_nocache_headers()
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{
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header("HTTP/1.0 200 OK");
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header("HTTP/1.1 200 OK");
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header("Cache-Control: no-cache, must-revalidate, max-age=0");
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header("Expires: 0");
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header("Pragma: no-cache");
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}
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/*-------------------------------------------------------------------------*/
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// Convert decimal character references to UTF-8
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/*-------------------------------------------------------------------------*/
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/**
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* Convert a decimal character to UTF-8
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*/
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function dec_char_ref_to_utf8($int=0)
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{
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$return = '';
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if ( $int < 0 )
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{
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return chr(0);
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}
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else if ( $int <= 0x007f )
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{
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$return .= chr($int);
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}
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else if ( $int <= 0x07ff )
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{
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$return .= chr(0xc0 | ($int >> 6));
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$return .= chr(0x80 | ($int & 0x003f));
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}
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else if ( $int <= 0xffff )
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{
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$return .= chr(0xe0 | ($int >> 12));
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$return .= chr(0x80 | (($int >> 6) & 0x003f));
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$return .= chr(0x80 | ($int & 0x003f));
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}
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else if ( $int <= 0x10ffff )
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{
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$return .= chr(0xf0 | ($int >> 18));
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$return .= chr(0x80 | (($int >> 12) & 0x3f));
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$return .= chr(0x80 | (($int >> 6) & 0x3f));
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$return .= chr(0x80 | ($int & 0x3f));
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}
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else
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{
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return chr(0);
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}
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return $return;
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}
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/*-------------------------------------------------------------------------*/
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// Helper function
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/*-------------------------------------------------------------------------*/
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function dec_char_ref_to_utf8_hexdec( $matches )
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{
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return $this->dec_char_ref_to_utf8( hexdec( $matches[1] ) );
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}
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/*-------------------------------------------------------------------------*/
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// Convert Ajax unicode
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/*-------------------------------------------------------------------------*/
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function convert_unicode($t)
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{
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if ( strtolower($this->ipsclass->vars['gb_char_set']) == 'utf-8' )
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{
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return preg_replace_callback( '#%u([0-9A-F]{1,4})#i', array( &$this, 'dec_char_ref_to_utf8_hexdec' ), utf8_encode($t) );
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}
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else
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{
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return preg_replace_callback( '#%u([0-9A-F]{1,4})#i', create_function( '$matches', "return '&#' . hexdec(\$matches[1]) . ';';" ), $t );
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}
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// Javascript escape function always sends unicode
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$text = preg_replace_callback( '#%u([0-9A-F]{1,4})#i', array( &$this, 'dec_char_ref_to_utf8_hexdec' ), utf8_encode($t) );
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if ( strtolower($this->ipsclass->vars['gb_char_set']) != 'utf-8' )
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{
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$text = $this->ipsclass->txt_convert_charsets( $text, 'UTF-8' );
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}
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return $text ? $text : $t;
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}
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/**
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* Convert HTML entities and respect character sets
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*/
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function convert_html_entities($t)
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{
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//-----------------------------------------
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// Try and fix up HTML entities with missing ;
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//-----------------------------------------
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$t = preg_replace( "/&#(\d+?)([^\d;])/i", "&#\\1;\\2", $t );
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//-----------------------------------------
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// Continue...
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//-----------------------------------------
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if ( strtolower($this->ipsclass->vars['gb_char_set']) != 'iso-8859-1' &&
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strtolower($this->ipsclass->vars['gb_char_set']) != 'utf-8' )
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{
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if ( array_key_exists( strtolower($this->ipsclass->vars['gb_char_set']), $this->decode_charsets ) )
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{
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$this->ipsclass->vars['gb_char_set'] = $this->decode_charsets[strtolower($this->ipsclass->vars['gb_char_set'])];
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$t = html_entity_decode( $t, ENT_NOQUOTES, $this->ipsclass->vars['gb_char_set'] );
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}
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else
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{
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// Take a crack at entities in other character sets
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$t = str_replace( "&#", "&#", $t );
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// If mb functions available, we can knock out html entities for a few more char sets
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if( function_exists('mb_list_encodings') )
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{
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// PHP 5, preferred method
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$valid_encodings = array();
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$valid_encodings = mb_list_encodings();
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if( count($valid_encodings) )
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{
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if( in_array( strtoupper($this->ipsclass->vars['gb_char_set']), $valid_encodings ) )
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{
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$t = mb_convert_encoding( $t, strtoupper($this->ipsclass->vars['gb_char_set']), 'HTML-ENTITIES' );
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}
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}
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}
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else if( function_exists('mb_convert_encoding') )
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{
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// PHP 4 support
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// Though this is quite tedious, let's check to see if encoding is supported....
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// http://us2.php.net/manual/en/ref.mbstring.php
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$valid_encodings = array( 'UCS-4', 'UCS-4BE', 'UCS-4LE', 'UCS-2', 'UCS-2BE', 'UCS-2LE', 'UTF-32', 'UTF-32BE',
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'UTF-32LE', 'UTF-16', 'UTF-16BE', 'UTF-16LE', 'UTF-7', 'UTF7-IMAP', 'UTF-8',
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'ASCII', 'EUC-JP', 'SJIS', 'EUCJP-WIN', 'SJIS-WIN', 'ISO-2022-JP', 'JIS', 'ISO-8859-1',
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'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4', 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7',
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'ISO-8859-8', 'ISO-8859-9', 'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15',
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'EUC-CN', 'CP936', 'EUC-TW', 'HZ', 'CP950', 'BIG-5', 'EUC-KR', 'CP949', 'ISO-2022-KR',
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'WINDOWS-1251', 'CP1251', 'WINDOWS-1252', 'CP1252', 'CP866', 'KOI8-R' );
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if( in_array( strtoupper($this->ipsclass->vars['gb_char_set']), $valid_encodings ) )
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{
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$t = mb_convert_encoding( $t, strtoupper($this->ipsclass->vars['gb_char_set']), 'HTML-ENTITIES' );
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}
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}
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}
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}
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return $t;
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}
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}
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?>
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