attachment.func.php

Discuz功能源码（开源）

<?php

/*
	[Discuz!] (C)2001-2009 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$Id: attachment.func.php 16781 2008-11-20 02:33:39Z cnteacher $
*/

if(!defined('IN_DISCUZ')) {
	exit('Access Denied');
}

function attachtype($type, $returnval = 'html') {

	static $attachicons = array(
			1 => 'unknown.gif',
			2 => 'binary.gif',
			3 => 'zip.gif',
			4 => 'rar.gif',
			5 => 'msoffice.gif',
			6 => 'text.gif',
			7 => 'html.gif',
			8 => 'real.gif',
			9 => 'av.gif',
			10 => 'flash.gif',
			11 => 'image.gif',
			12 => 'pdf.gif',
			13 => 'torrent.gif'
		);

	if(is_numeric($type)) {
		$typeid = $type;
	} else {
		if(preg_match("/bittorrent|^torrent\t/", $type)) {
			$typeid = 13;
		} elseif(preg_match("/pdf|^pdf\t/", $type)) {
			$typeid = 12;
		} elseif(preg_match("/image|^(jpg|gif|png|bmp)\t/", $type)) {
			$typeid = 11;
		} elseif(preg_match("/flash|^(swf|fla|swi)\t/", $type)) {
			$typeid = 10;
		} elseif(preg_match("/audio|video|^(wav|mid|mp3|m3u|wma|asf|asx|vqf|mpg|mpeg|avi|wmv)\t/", $type)) {
			$typeid = 9;
		} elseif(preg_match("/real|^(ra|rm|rv)\t/", $type)) {
			$typeid = 8;
		} elseif(preg_match("/htm|^(php|js|pl|cgi|asp)\t/", $type)) {
			$typeid = 7;
		} elseif(preg_match("/text|^(txt|rtf|wri|chm)\t/", $type)) {
			$typeid = 6;
		} elseif(preg_match("/word|powerpoint|^(doc|ppt)\t/", $type)) {
			$typeid = 5;
		} elseif(preg_match("/^rar\t/", $type)) {
			$typeid = 4;
		} elseif(preg_match("/compressed|^(zip|arj|arc|cab|lzh|lha|tar|gz)\t/", $type)) {
			$typeid = 3;
		} elseif(preg_match("/octet-stream|^(exe|com|bat|dll)\t/", $type)) {
			$typeid = 2;
		} elseif($type) {
			$typeid = 1;
		} else {
			$typeid = 0;
		}
	}
	if($returnval == 'html') {
		return '<img src="images/attachicons/'.$attachicons[$typeid].'" border="0" class="absmiddle" alt="" />';
	} elseif($returnval == 'id') {
		return $typeid;
	}
}

function sizecount($filesize) {
	if($filesize >= 1073741824) {
		$filesize = round($filesize / 1073741824 * 100) / 100 . ' GB';
	} elseif($filesize >= 1048576) {
		$filesize = round($filesize / 1048576 * 100) / 100 . ' MB';
	} elseif($filesize >= 1024) {
		$filesize = round($filesize / 1024 * 100) / 100 . ' KB';
	} else {
		$filesize = $filesize . ' Bytes';
	}
	return $filesize;
}

function parseattach($attachpids, $attachtags, &$postlist, $showimages = 1, $skipaids = array()) {
	global $db, $tablepre, $discuz_uid, $readaccess, $attachlist, $attachimgpost, $maxchargespan, $timestamp, $forum, $ftp, $attachurl, $dateformat, $timeformat, $timeoffset, $hideattach, $thread, $tradesaids, $trades, $exthtml, $tagstatus;

	$query = $db->query("SELECT a.*, ap.aid AS payed FROM {$tablepre}attachments a LEFT JOIN {$tablepre}attachpaymentlog ap ON ap.aid=a.aid AND ap.uid='$discuz_uid' WHERE a.pid IN ($attachpids)");

	$attachexists = FALSE;
	while($attach = $db->fetch_array($query)) {
		$attachexists = TRUE;
		$exthtml = '';
		if($skipaids && in_array($attach['aid'], $skipaids)) {
			continue;
		}
		$attached = 0;
		$extension = strtolower(fileext($attach['filename']));
		$attach['ext'] = $extension;
		$attach['attachicon'] = attachtype($extension."\t".$attach['filetype']);
		$attach['attachsize'] = sizecount($attach['filesize']);
		$attach['attachimg'] = $showimages && $attachimgpost && $attach['isimage'] && (!$attach['readperm'] || $readaccess >= $attach['readperm']) ? 1 : 0;
		if($attach['price']) {
			if($maxchargespan && $timestamp - $attach['dateline'] >= $maxchargespan * 3600) {
				$db->query("UPDATE {$tablepre}attachments SET price='0' WHERE aid='$attach[aid]'");
				$attach['price'] = 0;
			} else {
				if(!$discuz_uid || (!$forum['ismoderator'] && $attach['uid'] != $discuz_uid && !$attach['payed'])) {
					$attach['unpayed'] = 1;
				}
			}
		}
		$attach['payed'] = $attach['payed'] || $forum['ismoderator'] || $attach['uid'] == $discuz_uid ? 1 : 0;
		$attach['url'] = $attach['remote'] ? $ftp['attachurl'] : $attachurl;
		$attach['dateline'] = dgmdate("$dateformat $timeformat", $attach['dateline'] + $timeoffset * 3600);
		$postlist[$attach['pid']]['attachments'][$attach['aid']] = $attach;
		if(is_array($attachtags[$attach['pid']]) && in_array($attach['aid'], $attachtags[$attach['pid']])) {
			$findattach[$attach['pid']][] = "/\[attach\]$attach[aid]\[\/attach\]/i";
			$replaceattach[$attach['pid']][] = $hideattach[$attach['pid']] ? '[attach]***[/attach]' : attachtag($attach['pid'], $attach['aid'], $postlist);
			$attached = 1;
		}

		if(!$attached || $attach['unpayed']) {
			if($attach['isimage']) {
				$postlist[$attach['pid']]['imagelist'] .= attachlist($attach);
			} else {
				$postlist[$attach['pid']]['attachlist'] .= attachlist($attach);
			}
		}
	}

	if($attachexists) {
		foreach($attachtags as $pid => $aids) {
			if($findattach[$pid]) {
				$postlist[$pid]['message'] = preg_replace($findattach[$pid], $replaceattach[$pid], $postlist[$pid]['message'], 1);
				$postlist[$pid]['message'] = preg_replace($findattach[$pid], '', $postlist[$pid]['message']);
			}
		}
	} else {
		$db->query("UPDATE {$tablepre}posts SET attachment='0' WHERE pid IN ($attachpids)", 'UNBUFFERED');
	}
}

?>