functions.php

在综合英文版XOOPS 2.09, 2.091, 2.092 的基础上正式发布XOOPS 2.09中文版 XOOPS 2.09x 版主要是PHP5升级、bug修正和安全补正： 1 全面兼容PHP 5.

<?php
// $Id: functions.php,v 1.1.1.106 2004/12/02 13:40:33 phppp Exp $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //
function newbb_attachmentImage($source, $asSource = false)
{
	global $xoopsModuleConfig;

	$img_path = XOOPS_ROOT_PATH.'/'.$xoopsModuleConfig['dir_attachments'];
	$img_url = XOOPS_URL.'/'.$xoopsModuleConfig['dir_attachments'];
	$thumb_path = $img_path.'/thumbs';
	$thumb_url = $img_url.'/thumbs';

	if(!file_exists($thumb_path.'/'.$source)&&$xoopsModuleConfig['max_img_width']>0)
		newbb_createThumbnail($source, $xoopsModuleConfig['max_img_width']);

	$thumb = $thumb_path.'/'.$source;
	$image = $img_path.'/'.$source;
	$thumb_url = $thumb_url.'/'.$source;
	$image_url = $img_url.'/'.$source;


	if(file_exists($thumb)){
		if($asSource) $thumb_url = $thumb;
		$attachmentImage  = '<a href="'.$image_url.'" target="newbb_image">';
		$attachmentImage .= '<img src="'.$thumb_url.'" alt="'.$source.'" />';
		$attachmentImage .= '</a>';
	}elseif(file_exists($image)){
		if($asSource) $image_url = $image;
		$attachmentImage = '<img src="'.$image_url.'" alt="'.$source.'" />';
	}else $attachmentImage = '';

	return $attachmentImage;
}


function newbb_createThumbnail($source, $thumb_width)
{
	global $xoopsModuleConfig;

	$img_path = XOOPS_ROOT_PATH.'/'.$xoopsModuleConfig['dir_attachments'];
	$thumb_path = $img_path.'/thumbs';
	$src_file = $img_path.'/'.$source;
	$new_file = $thumb_path.'/'.$source;
	$imageLibs = newbb_getImageLibs();

	if (!filesize($src_file) || !is_readable($src_file)) {
		return false;
	}

	if (!is_dir($thumb_path) || !is_writable($thumb_path)) {
		return false;
	}

	$imginfo = @getimagesize($src_file);
	if ( NULL == $imginfo ) {
		return false;
	}
	if($imginfo[0] < $thumb_width) {
		return false;
	}

	$newWidth = (int)(min($imginfo[0],$thumb_width));
	$newHeight = (int)($imginfo[1] * $newWidth / $imginfo[0]);

	if ($xoopsModuleConfig['image_lib'] == 1 or $xoopsModuleConfig['image_lib'] == 0 )
	{
		if (preg_match("#[A-Z]:|\\\\#Ai",__FILE__)){
			$cur_dir = dirname(__FILE__);
			$src_file_im = '"'.$cur_dir.'\\'.strtr($src_file, '/', '\\').'"';
			$new_file_im = '"'.$cur_dir.'\\'.strtr($new_file, '/', '\\').'"';
		} else {
			$src_file_im =   @escapeshellarg($src_file);
			$new_file_im =   @escapeshellarg($new_file);
		}
		$path = empty($xoopsModuleConfig['path_magick'])?"":$xoopsModuleConfig['path_magick']."/";
		$magick_command = $path . 'convert -quality 85 -antialias -sample ' . $newWidth . 'x' . $newHeight . ' ' . $src_file_im . ' +profile "*" ' . str_replace('\\', '/', $new_file_im) . '';

		@passthru($magick_command);
		if (file_exists($new_file)){
				return true;
		}
	}

	if ($xoopsModuleConfig['image_lib'] == 2 or $xoopsModuleConfig['image_lib'] == 0 )
	{
		$path = empty($xoopsModuleConfig['path_netpbm'])?"":$xoopsModuleConfig['path_netpbm']."/";
		if (eregi("\.png", $source)){
			$cmd = $path . "pngtopnm $src_file | ".$path . "pnmscale -xysize $newWidth $newHeight | ".$path . "pnmtopng > $new_file" ;
		}
		else if (eregi("\.(jpg|jpeg)", $source)){
			$cmd = $path . "jpegtopnm $src_file | ".$path . "pnmscale -xysize $newWidth $newHeight | ".$path . "ppmtojpeg -quality=90 > $new_file" ;
		}
		else if (eregi("\.gif", $source)){
			$cmd = $path . "giftopnm $src_file | ".$path . "pnmscale -xysize $newWidth $newHeight | ppmquant 256 | ".$path . "ppmtogif > $new_file" ;
		}

		@exec($cmd, $output, $retval);
		if (file_exists($new_file)){
				return true;
		}
	}

	$type = $imginfo[2];
	$supported_types = array();

	if (!extension_loaded('gd')) return false;
	if (function_exists('imagegif')) $supported_types[] = 1;
	if (function_exists('imagejpeg'))$supported_types[] = 2;
	if (function_exists('imagepng')) $supported_types[] = 3;

    $imageCreateFunction = (function_exists('imagecreatetruecolor'))? "imagecreatetruecolor" : "imagecreate";

	if (in_array($type, $supported_types) )
	{
		switch ($type)
		{
			case 1 :
				if (!function_exists('imagecreatefromgif')) return false;
				$im = imagecreatefromgif($src_file);
				$new_im = imagecreate($newWidth, $newHeight);
				imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
				imagegif($new_im, $new_file);
				imagedestroy($new_im);
				break;
			case 2 :
				$im = imagecreatefromjpeg($src_file);
				$new_im = $imageCreateFunction($newWidth, $newHeight);
				imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
				imagejpeg($new_im, $new_file, 90);
				imagedestroy($new_im);
				break;
			case 3 :
				$im = imagecreatefrompng($src_file);
				$new_im = $imageCreateFunction($newWidth, $newHeight);
				imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
				imagepng($new_im, $new_file);
				imagedestroy($new_im);
				break;
		}
	}


	if (file_exists($new_file))	return true;
	else return false;
}

function newbb_is_dir($dir){
    $openBasedir = ini_get('open_basedir');
    if (empty($openBasedir)) {
	    return is_dir($dir);
    }

    return in_array($dir, explode(':', $openBasedir));
}

/*
 * Sorry, we have to use the stupid solution unless there is an option in MyTextSanitizer:: htmlspecialchars();
 */
function &newbb_htmlSpecialChars($text)
{
	return preg_replace(array("/&amp;/i", "/&nbsp;/i"), array('&', '&amp;nbsp;'), htmlspecialchars($text));
}

function &newbb_displayTarea(&$text, $html = 0, $smiley = 1, $xcode = 1, $image = 1, $br = 1)
{
	global $myts;

	if ($html != 1) {
		// html not allowed
		$text =& newbb_htmlSpecialChars($text);
	}
	$text =& $myts->codePreConv($text, $xcode); // Ryuji_edit(2003-11-18)
	$text =& $myts->makeClickable($text);
	if ($smiley != 0) {
		// process smiley
		$text =& $myts->smiley($text);
	}
	if ($xcode != 0) {
		// decode xcode
		if ($image != 0) {
			// image allowed
			$text =& $myts->xoopsCodeDecode($text);
        		} else {
            		// image not allowed
            		$text =& $myts->xoopsCodeDecode($text, 0);
		}
	}
	if ($br != 0) {
		$text =& $myts->nl2Br($text);
	}
	$text =& $myts->codeConv($text, $xcode, $image);	// Ryuji_edit(2003-11-18)
	return $text;
}

function newbb_html2text($document)
{
	// PHP Manual:: function preg_replace
	// $document should contain an HTML document.
	// This will remove HTML tags, javascript sections
	// and white space. It will also convert some
	// common HTML entities to their text equivalent.

	$search = array ("'<script[^>]*?>.*?</script>'si",  // Strip out javascript
	                 "'<[\/\!]*?[^<>]*?>'si",          // Strip out HTML tags
	                 "'([\r\n])[\s]+'",                // Strip out white space
	                 "'&(quot|#34);'i",                // Replace HTML entities
	                 "'&(amp|#38);'i",
	                 "'&(lt|#60);'i",
	                 "'&(gt|#62);'i",
	                 "'&(nbsp|#160);'i",
	                 "'&(iexcl|#161);'i",
	                 "'&(cent|#162);'i",
	                 "'&(pound|#163);'i",
	                 "'&(copy|#169);'i",
	                 "'&#(\d+);'e");                    // evaluate as php

	$replace = array ("",
	                 "",
	                 "\\1",
	                 "\"",
	                 "&",
	                 "<",
	                 ">",
	                 " ",
	                 chr(161),
	                 chr(162),
	                 chr(163),
	                 chr(169),
	                 "chr(\\1)");

	$text = preg_replace($search, $replace, $document);
	return $text;
}

function newbb_setsession($name, $value = '')
{
	$value = (is_array($value))?implode(",", $value):$value;
	$_SESSION['newbb_'.$name] = $value;
}

function newbb_getsession($name, $isArray = false)
{
	$value = !empty($_SESSION['newbb_'.$name]) ? $_SESSION['newbb_'.$name] : false;
	if($isArray) $value = ($value)?explode(",", $value):array();
	return $value;
}

function newbb_setcookie($name, $value = '', $expire = 0)
{
	global $forumCookie;
	$value = (is_array($value))?implode(",", $value):$value;
	setcookie($forumCookie['prefix'].$name, $value, intval($expire), $forumCookie['path'], $forumCookie['domain'], $forumCookie['secure']);
}

function newbb_getcookie($name, $isArray = false)
{
	global $forumCookie;
	$value = !empty($_COOKIE[$forumCookie['prefix'].$name]) ? $_COOKIE[$forumCookie['prefix'].$name] : false;
	if($isArray && !empty($value)) $value = ($value)?explode(",", $value):array();
	return $value;
}

function newbb_checkTimelimit($action_last, $action_tag, $inMinute = true)
{
	global $xoopsModuleConfig;
	if(!isset($xoopsModuleConfig[$action_tag]) or $xoopsModuleConfig[$action_tag]==0) return true;
	$timelimit = ($inMinute)?$xoopsModuleConfig[$action_tag]*60:$xoopsModuleConfig[$action_tag];
	return ($action_last > time()-$timelimit)?true:false;
}


function &getModuleAdministrators($mid=0)
{
	static $module_administrators=array();
	if(isset($module_administrators[$mid])) return $module_administrators[$mid];

    $moduleperm_handler =& xoops_gethandler('groupperm');
    $groupsIds = $moduleperm_handler->getGroupIds('module_admin', $mid);

    $administrators = array();
    $member_handler =& xoops_gethandler('member');
    foreach($groupsIds as $groupid){
    	$userIds = $member_handler->getUsersByGroup($groupid);
    	foreach($userIds as $userid){
        	$administrators[$userid] = 1;
    	}
    }
    $module_administrators[$mid] =array_keys($administrators);
    unset($administrators);
    return $module_administrators[$mid];
}

function newbb_isAdministrator($user=-1, $mid=0)
{
	global $xoopsUser;
	static $administrators, $xoopsModule, $newBB_mid;

	if($user == -1) $user = &$xoopsUser;
	if(!is_object($user) && intval($user)<1) return false;
	$uid = (is_object($user))?$user->getVar('uid'):intval($user);

	if(!$mid){
		if (!isset($newBB_mid)) {
		    if(is_object($xoopsModule)&& 'newbb' == $xoopsModule->dirname()){
		    	$newBB_mid = $xoopsModule->getVar('mid');
		    }else{
		        $modhandler = &xoops_gethandler('module');
		        $newBB = &$modhandler->getByDirname('newbb');
			    $newBB_mid = $newBB->getVar('mid');
			    unset($newBB);
		    }
		}
		$mid = $newBB_mid;
	}

	if(!isset($administrators)) {
		$administrators =& getModuleAdministrators($mid);
	}

	return in_array($uid,$administrators);
}

function newbb_isAdmin($forum = 0, $user=-1)
{
	global $xoopsUser;
	static $_cachedModerators;

	if($user == -1) $user = &$xoopsUser;
	if(!is_object($user) && intval($user)<1) return false;
	$uid = (is_object($user))?$user->getVar('uid'):intval($user);
	if(newbb_isAdministrator($uid)) return true;

	$cache_id = (is_object($forum))?$forum->getVar('forum_id'):intval($forum);
	if(!isset($_cachedModerators[$cache_id])){
		$forum_handler =& xoops_getmodulehandler('forum', 'newbb');
		if(!is_object($forum)) $forum = $forum_handler->get(intval($forum));