[tt-rss.git] / backend.php

<?
	require_once "sessions.php";
	require_once "backend-rpc.php";
	
	header("Cache-Control: no-cache, must-revalidate");
	header("Pragma: no-cache");
	header("Expires: -1");
	
/*	if ($_GET["debug"]) {
		define('DEFAULT_ERROR_LEVEL', E_ALL);
	} else {
		define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
	}
	
	error_reporting(DEFAULT_ERROR_LEVEL); */

	$op = $_REQUEST["op"];

	define('SCHEMA_VERSION', 8);

	require_once "sanity_check.php";
	require_once "config.php";
	
	require_once "db.php";
	require_once "db-prefs.php";
	require_once "functions.php";
	require_once "magpierss/rss_fetch.inc";

	$err_msg = check_configuration_variables();

	if ($err_msg) {
		header("Content-Type: application/xml");
		print_error_xml(9, $err_msg); die;
	}

	if ((!$op || $op == "rpc" || $op == "globalUpdateFeeds") && !$_REQUEST["noxml"]) {
		header("Content-Type: application/xml");
	}

	if (!$_SESSION["uid"] && $op != "globalUpdateFeeds") {

		if ($op == "rpc") {
			print_error_xml(6); die;
		} else {
			print "
			<html><body>
				<p>Error: Not logged in.</p>
				<script type=\"text/javascript\">
					if (parent.window != 'undefined') {
						parent.window.location = \"login.php\";		
					} else {
						window.location = \"login.php\";
					}
				</script>
			</body></html>
			";
		}
		exit;
	}

	if (!$op) {
		print_error_xml(7); exit;
	}

	$purge_intervals = array(
		0  => "Default",
		-1 => "Never purge",
		5  => "1 week",
		14 => "2 weeks",
		31 => "1 month",
		60 => "2 months",
		90 => "3 months");

	$update_intervals = array(
		0   => "Default",
		-1  => "Disable updates",
		30  => "30 minutes",
		60  => "1 hour",
		240 => "4 hours",
		720 => "12 hours",
		1440 => "Daily",
		10080 => "Weekly");

	$script_started = getmicrotime();

	$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);	

	if (!$link) {
		if (DB_TYPE == "mysql") {
			print mysql_error();
		}
		// PG seems to display its own errors just fine by default.		
		return;
	}

	if (DB_TYPE == "pgsql") {
		pg_query("set client_encoding = 'utf-8'");
	}

	if ($_SESSION["uid"]) {
		if (get_pref($link, "HIDE_READ_FEEDS") == "true") {
			setcookie("ttrss_vf_hreadf", 1);
		} else {
			setcookie("ttrss_vf_hreadf", 0);
		}  

		setcookie('ttrss_vf_refresh', FEEDS_FRAME_REFRESH);
		setcookie('ttrss_vf_daemon', ENABLE_UPDATE_DAEMON);

		if (get_pref($link, "ON_CATCHUP_SHOW_NEXT_FEED")) {		
			setcookie('ttrss_vf_catchupnext', 1);
		} else {
			setcookie('ttrss_vf_catchupnext', 0);
		}		
	}

	$fetch = $_GET["fetch"];

//	setcookie("ttrss_icons_url", ICONS_URL);

	if (!sanity_check($link)) { return; }

	function outputFeedList($link, $tags = false) {

		print "<html><head>
			<title>Tiny Tiny RSS : Feedlist</title>
			<link rel=\"stylesheet\" href=\"tt-rss.css\" type=\"text/css\">";

		$user_theme = $_SESSION["theme"];
		if ($user_theme) { 
			print "<link rel=\"stylesheet\" type=\"text/css\" 
				href=\"themes/$user_theme/theme.css\">";
		}

		if (get_pref($link, 'USE_COMPACT_STYLESHEET')) {
			print "<link rel=\"stylesheet\" type=\"text/css\" 
				href=\"tt-rss_compact.css\"/>";
		} else {
			print "<link title=\"Compact Stylesheet\" rel=\"alternate stylesheet\" 
					type=\"text/css\" href=\"tt-rss_compact.css\"/>";
		}

		$script_dt_add = get_script_dt_add();

		print "<script type=\"text/javascript\" src=\"functions.js?$script_dt_add\"></script>
			<script type=\"text/javascript\" src=\"feedlist.js?$script_dt_add\"></script>
			<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
			<!--[if gte IE 5.5000]>
			<script type=\"text/javascript\" src=\"pngfix.js\"></script>
			<link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss-ie.css\">
			<![endif]-->
			</head><body>
			<script type=\"text/javascript\">
				if (document.addEventListener) {
					document.addEventListener(\"DOMContentLoaded\", init, null);
				}
				window.onload = init;
			</script>";

		print "<ul class=\"feedList\" id=\"feedList\">\n";

		$owner_uid = $_SESSION["uid"];

		if (!$tags) {

			/* virtual feeds */

			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				print "<li class=\"feedCat\">Special</li>";
				print "<li id=\"feedCatHolder\"><ul class=\"feedCatList\">";
			}

			$result = db_query($link, "SELECT count(id) as num_starred 
				FROM ttrss_entries,ttrss_user_entries 
				WHERE marked = true AND 
				ttrss_user_entries.ref_id = ttrss_entries.id AND
				unread = true AND owner_uid = '$owner_uid'");
			$num_starred = db_fetch_result($result, 0, "num_starred");

			$class = "virt";

			if ($num_starred > 0) $class .= "Unread";

			printFeedEntry(-1, $class, "Starred articles", $num_starred, 
				"images/mark_set.png", $link);

			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				print "</ul>\n";
			}

			if (GLOBAL_ENABLE_LABELS && get_pref($link, 'ENABLE_LABELS')) {
	
				$result = db_query($link, "SELECT id,sql_exp,description FROM
					ttrss_labels WHERE owner_uid = '$owner_uid' ORDER by description");
		
				if (db_num_rows($result) > 0) {
					if (get_pref($link, 'ENABLE_FEED_CATS')) {
						print "<li class=\"feedCat\">Labels</li>";
						print "<li id=\"feedCatHolder\"><ul class=\"feedCatList\">";
					} else {
						print "<li><hr></li>";
					}
				}
		
				while ($line = db_fetch_assoc($result)) {
	
					error_reporting (0);
		
					$tmp_result = db_query($link, "SELECT count(id) as count 
						FROM ttrss_entries,ttrss_user_entries
						WHERE (" . $line["sql_exp"] . ") AND unread = true AND
						ttrss_user_entries.ref_id = ttrss_entries.id
						AND owner_uid = '$owner_uid'");
	
					$count = db_fetch_result($tmp_result, 0, "count");
	
					$class = "label";
	
					if ($count > 0) {
						$class .= "Unread";
					}
					
					error_reporting (DEFAULT_ERROR_LEVEL);
	
					printFeedEntry(-$line["id"]-11, 
						$class, $line["description"], $count, "images/label.png", $link);
		
				}

				if (db_num_rows($result) > 0) {
					if (get_pref($link, 'ENABLE_FEED_CATS')) {
						print "</ul>";
					}
				}

			}

//			if (!get_pref($link, 'ENABLE_FEED_CATS')) {
				print "<li><hr></li>";
//			}

			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				$order_by_qpart = "category,title";
			} else {
				$order_by_qpart = "title";
			}

			$result = db_query($link, "SELECT ttrss_feeds.*,
				SUBSTRING(last_updated,1,19) AS last_updated_noms,
				(SELECT COUNT(id) FROM ttrss_entries,ttrss_user_entries
					WHERE feed_id = ttrss_feeds.id AND 
					ttrss_user_entries.ref_id = ttrss_entries.id AND
					owner_uid = '$owner_uid') AS total,
				(SELECT COUNT(id) FROM ttrss_entries,ttrss_user_entries
					WHERE feed_id = ttrss_feeds.id AND unread = true
						AND ttrss_user_entries.ref_id = ttrss_entries.id
						AND owner_uid = '$owner_uid') as unread,
				cat_id,last_error,
				ttrss_feed_categories.title AS category,
				ttrss_feed_categories.collapsed	
				FROM ttrss_feeds LEFT JOIN ttrss_feed_categories 
					ON (ttrss_feed_categories.id = cat_id)				
				WHERE 
					ttrss_feeds.owner_uid = '$owner_uid' AND parent_feed IS NULL
				ORDER BY $order_by_qpart"); 

			$actid = $_GET["actid"];
	
			/* real feeds */
	
			$lnum = 0;
	
			$total_unread = 0;

			$category = "";

			$short_date = get_pref($link, 'SHORT_DATE_FORMAT');
	
			while ($line = db_fetch_assoc($result)) {
			
				$feed = db_unescape_string($line["title"]);
				$feed_id = $line["id"];	  
	
				$subop = $_GET["subop"];
				
				$total = $line["total"];
				$unread = $line["unread"];

				if (get_pref($link, 'HEADLINES_SMART_DATE')) {
					$last_updated = smart_date_time(strtotime($line["last_updated_noms"]));
				} else {
					$last_updated = date($short_date, strtotime($line["last_updated_noms"]));
				}

				$rtl_content = sql_bool_to_bool($line["rtl_content"]);

				if ($rtl_content) {
					$rtl_tag = "dir=\"RTL\"";
				} else {
					$rtl_tag = "";
				}

				$tmp_result = db_query($link,
					"SELECT id,COUNT(unread) AS unread
					FROM ttrss_feeds LEFT JOIN ttrss_user_entries 
						ON (ttrss_feeds.id = ttrss_user_entries.feed_id) 
					WHERE parent_feed = '$feed_id' AND unread = true 
					GROUP BY ttrss_feeds.id");
			
				if (db_num_rows($tmp_result) > 0) {				
					while ($l = db_fetch_assoc($tmp_result)) {
						$unread += $l["unread"];
					}
				}

				$cat_id = $line["cat_id"];

				$tmp_category = $line["category"];

				if (!$tmp_category) {
					$tmp_category = "Uncategorized";
				}
				
	//			$class = ($lnum % 2) ? "even" : "odd";

				if ($line["last_error"]) {
					$class = "error";
				} else {
					$class = "feed";
				}
	
				if ($unread > 0) $class .= "Unread";
	
				if ($actid == $feed_id) {
					$class .= "Selected";
				}
	
				$total_unread += $unread;

				if ($category != $tmp_category && get_pref($link, 'ENABLE_FEED_CATS')) {
				
					if ($category) {
						print "</ul></li>";
					}
				
					$category = $tmp_category;

					$collapsed = $line["collapsed"];

					// workaround for NULL category
					if ($category == "Uncategorized") {
						if ($_COOKIE["ttrss_vf_uclps"] == 1) {
							$collapsed = "t";
						}
					}

					if ($collapsed == "t" || $collapsed == "1") {
						$holder_class = "invisible";
						$ellipsis = "...";
					} else {
						$holder_class = "";
						$ellipsis = "";
					}

					if ($cat_id) {
						$cat_id_qpart = "cat_id = '$cat_id'";
					} else {
						$cat_id_qpart = "cat_id IS NULL";
					}

					$tmp_result = db_query($link, "SELECT count(int_id) AS unread
						FROM ttrss_user_entries,ttrss_feeds WHERE
							unread = true AND
							feed_id = ttrss_feeds.id AND $cat_id_qpart AND
							ttrss_user_entries.owner_uid = " . $_SESSION["uid"]);

					$cat_unread = db_fetch_result($tmp_result, 0, "unread");

					$cat_id = sprintf("%d", $cat_id);
					
					print "<li class=\"feedCat\" id=\"FCAT-$cat_id\">
						<a href=\"javascript:toggleCollapseCat($cat_id)\">$tmp_category</a>
							<a href=\"javascript:viewCategory($cat_id)\" id=\"FCAP-$cat_id\">
							<span id=\"FCATCTR-$cat_id\" 
							class=\"$catctr_class\">($cat_unread unread)$ellipsis</span>
							</a></li>";

					// !!! NO SPACE before <ul...feedCatList - breaks firstChild DOM function
					// -> keyboard navigation, etc.
					print "<li id=\"feedCatHolder\" class=\"$holder_class\"><ul class=\"feedCatList\" id=\"FCATLIST-$cat_id\">";
				}
	
				printFeedEntry($feed_id, $class, $feed, $unread, 
					"icons/$feed_id.ico", $link, $rtl_content, 
					$last_updated, $line["last_error"]);
	
				++$lnum;
			}

		} else {

			// tags

/*			$result = db_query($link, "SELECT tag_name,count(ttrss_entries.id) AS count
				FROM ttrss_tags,ttrss_entries,ttrss_user_entries WHERE
				post_int_id = ttrss_user_entries.int_id AND 
				unread = true AND ref_id = ttrss_entries.id
				AND ttrss_tags.owner_uid = '$owner_uid' GROUP BY tag_name	
			UNION
				select tag_name,0 as count FROM ttrss_tags WHERE owner_uid = '$owner_uid'
			ORDER BY tag_name"); */

			$result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id) 
				FROM ttrss_user_entries WHERE int_id = post_int_id 
					AND unread = true)) AS count FROM ttrss_tags 
				WHERE owner_uid = 2 GROUP BY tag_name ORDER BY tag_name");

			$tags = array();
	
			while ($line = db_fetch_assoc($result)) {
				$tags[$line["tag_name"]] += $line["count"];
			}
	
			foreach (array_keys($tags) as $tag) {
	
				$unread = $tags[$tag];
	
				$class = "tag";
	
				if ($unread > 0) {
					$class .= "Unread";
				}
	
				printFeedEntry($tag, $class, $tag, $unread, "images/tag.png", $link);
	
			} 

		}

		if (db_num_rows($result) == 0) {
			if ($tags) {
				$what = "tags";
			} else {
				$what = "feeds";
			}
			print "<li>No $what to display.</li>";
		}

		print "</ul>";

		print '
			<script type="text/javascript">
				/* for IE */
				function statechange() {
					if (document.readyState == "interactive") init();
				}
			
				if (document.readyState) {	
					if (document.readyState == "interactive" || document.readyState == "complete") {
						init();
					} else {
						document.onreadystatechange = statechange;
					}
				}
			</script></body></html>';
	}


	if ($op == "rpc") {
		handle_rpc_request($link);
	}
	
	if ($op == "feeds") {

		$tags = $_GET["tags"];

		$subop = $_GET["subop"];

		if ($subop == "catchupAll") {
			db_query($link, "UPDATE ttrss_user_entries SET 
				last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
		}

		if ($subop == "collapse") {
			$cat_id = db_escape_string($_GET["cid"]);

			db_query($link, "UPDATE ttrss_feed_categories SET
				collapsed = NOT collapsed WHERE id = '$cat_id' AND owner_uid = " . 
				$_SESSION["uid"]);
			return;
		}

		outputFeedList($link, $tags);

	}

	if ($op == "view") {

		$id = db_escape_string($_GET["id"]);
		$feed_id = db_escape_string($_GET["feed"]);

		$result = db_query($link, "SELECT rtl_content FROM ttrss_feeds
			WHERE id = '$feed_id' AND owner_uid = " . $_SESSION["uid"]);

		if (db_num_rows($result) == 1) {
			$rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
		} else {
			$rtl_content = false;
		}

		if ($rtl_content) {
			$rtl_tag = "dir=\"RTL\"";
			$rtl_class = "RTL";
		} else {
			$rtl_tag = "";
			$rtl_class = "";
		}

		$result = db_query($link, "UPDATE ttrss_user_entries 
			SET unread = false,last_read = NOW() 
			WHERE ref_id = '$id' AND feed_id = '$feed_id' AND owner_uid = " . $_SESSION["uid"]);

		$result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
			SUBSTRING(updated,1,16) as updated,
			(SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
			num_comments,
			author
			FROM ttrss_entries,ttrss_user_entries
			WHERE	id = '$id' AND ref_id = id AND owner_uid = " . $_SESSION["uid"]);

		print "<html><head>
			<title>Tiny Tiny RSS : Article $id</title>
			<link rel=\"stylesheet\" href=\"tt-rss.css\" type=\"text/css\">";

		$user_theme = $_SESSION["theme"];
		if ($user_theme) { 
			print "<link rel=\"stylesheet\" type=\"text/css\" 
				href=\"themes/$user_theme/theme.css\">";
		}

		if (get_pref($link, 'USE_COMPACT_STYLESHEET')) {
			print "<link rel=\"stylesheet\" type=\"text/css\" 
				href=\"tt-rss_compact.css\"/>";
		} else {
			print "<link title=\"Compact Stylesheet\" rel=\"alternate stylesheet\" 
					type=\"text/css\" href=\"tt-rss_compact.css\"/>";
		}

		$script_dt_add = get_script_dt_add();

		print "<script type=\"text/javascript\" src=\"functions.js?$script_dt_add\"></script>
			<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
			</head><body $rtl_tag>";

		if ($result) {

			$line = db_fetch_assoc($result);

			if ($line["icon_url"]) {
				$feed_icon = "<img class=\"feedIcon\" src=\"" . $line["icon_url"] . "\">";
			} else {
				$feed_icon = "&nbsp;";
			}

/*			if ($line["comments"] && $line["link"] != $line["comments"]) {
				$entry_comments = "(<a href=\"".$line["comments"]."\">Comments</a>)";
			} else {
				$entry_comments = "";
			} */

			$num_comments = $line["num_comments"];
			$entry_comments = "";

			if ($num_comments > 0) {
				if ($line["comments"]) {
					$comments_url = $line["comments"];
				} else {
					$comments_url = $line["link"];
				}
				$entry_comments = "<a href=\"$comments_url\">$num_comments comments</a>";
			} else {
				if ($line["comments"] && $line["link"] != $line["comments"]) {
					$entry_comments = "<a href=\"".$line["comments"]."\">comments</a>";
				}				
			}

			print "<div class=\"postReply\">";

			print "<div class=\"postHeader\"><table width=\"100%\">";

			$entry_author = $line["author"];

			if ($entry_author) {
				$entry_author = " - by $entry_author";
			}

			print "<tr><td><a href=\"" . $line["link"] . "\">" . $line["title"] . 
				"</a>$entry_author</td>";

			$parsed_updated = date(get_pref($link, 'LONG_DATE_FORMAT'), 
				strtotime($line["updated"]));
		
			print "<td class=\"postDate$rtl_class\">$parsed_updated</td>";
						
			print "</tr>";

			$tmp_result = db_query($link, "SELECT DISTINCT tag_name FROM
				ttrss_tags WHERE post_int_id = " . $line["int_id"] . "
				ORDER BY tag_name");
	
			$tags_str = "";
			$f_tags_str = "";

			$num_tags = 0;

			while ($tmp_line = db_fetch_assoc($tmp_result)) {
				$num_tags++;
				$tag = $tmp_line["tag_name"];				
				$tag_str = "<a href=\"javascript:parent.viewfeed('$tag')\">$tag</a>, "; 
				
				if ($num_tags == 5) {
					$tags_str .= "<a href=\"javascript:showBlockElement('allEntryTags')\">...</a>";
				} else if ($num_tags < 5) {
					$tags_str .= $tag_str;
				}
				$f_tags_str .= $tag_str;
			}

			$tags_str = preg_replace("/, $/", "", $tags_str);
			$f_tags_str = preg_replace("/, $/", "", $f_tags_str);

//			$truncated_link = truncate_string($line["link"], 60);

			if ($tags_str || $entry_comments) {
				print "<tr><td width='50%'>
					$entry_comments</td>
					<td align=\"right\">$tags_str</td></tr>";
			}

			print "</table></div>";

			print "<div class=\"postIcon\">" . $feed_icon . "</div>";
			print "<div class=\"postContent\">";
			
			if (db_num_rows($tmp_result) > 5) {
				print "<div id=\"allEntryTags\">Tags: $f_tags_str</div>";
			}

			if (get_pref($link, 'OPEN_LINKS_IN_NEW_WINDOW')) {
				$line["content"] = preg_replace("/href=/i", "target=\"_new\" href=", $line["content"]);
			}

			print $line["content"] . "</div>";
			
			print "</div>";

			print "<script type=\"text/javascript\">
				update_all_counters('$feed_id');
			</script>";
		}

		print "</body></html>";
	}

	if ($op == "viewfeed") {

		$feed = db_escape_string($_GET["feed"]);
		$skip = db_escape_string($_GET["skip"]);
		$subop = db_escape_string($_GET["subop"]);
		$view_mode = db_escape_string($_GET["view"]);
		$limit = db_escape_string($_GET["limit"]);
		$cat_view = db_escape_string($_GET["cat"]);
		$next_unread_feed = db_escape_string($_GET["nuf"]);

		if (!$skip) $skip = 0;

		if ($subop == "undefined") $subop = "";

		print "<html><head>
			<title>Tiny Tiny RSS : Feed $feed</title>
			<link rel=\"stylesheet\" href=\"tt-rss.css\" type=\"text/css\">";

		$user_theme = $_SESSION["theme"];
		if ($user_theme) { 
			print "<link rel=\"stylesheet\" type=\"text/css\" 
				href=\"themes/$user_theme/theme.css\">";
		}

		if (get_pref($link, 'USE_COMPACT_STYLESHEET')) {
			print "<link rel=\"stylesheet\" 
					type=\"text/css\" href=\"tt-rss_compact.css\"/>";

		} else {
			print "<link title=\"Compact Stylesheet\" rel=\"alternate stylesheet\" 
					type=\"text/css\" href=\"tt-rss_compact.css\"/>";
		}

		if ($subop == "ForceUpdate" && sprintf("%d", $feed) > 0) {
			update_generic_feed($link, $feed, $cat_view);
		}

		if ($subop == "MarkAllRead")  {
			catchup_feed($link, $feed, $cat_view);

			if (get_pref($link, 'ON_CATCHUP_SHOW_NEXT_FEED')) {
				if ($next_unread_feed) {
					$feed = $next_unread_feed;
				}
			}
		}

		if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
	
			$result = db_query($link, "SELECT rtl_content FROM ttrss_feeds
				WHERE id = '$feed' AND owner_uid = " . $_SESSION["uid"]);

			if (db_num_rows($result) == 1) {
				$rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
			} else {
				$rtl_content = false;
			}
	
			if ($rtl_content) {
				$rtl_tag = "dir=\"RTL\"";
			} else {
				$rtl_tag = "";
			}
		} else {
			$rtl_tag = "";
			$rtl_content = false;
		}

		$script_dt_add = get_script_dt_add();

		print "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">	
			<script type=\"text/javascript\" src=\"functions.js?$script_dt_add\"></script>
			<script type=\"text/javascript\" src=\"viewfeed.js?$script_dt_add\"></script>
			<!--[if gte IE 5.5000]>
			<script type=\"text/javascript\" src=\"pngfix.js\"></script>
			<link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss-ie.css\">
			<![endif]-->
			</head><body $rtl_tag>
			<script type=\"text/javascript\">
			if (document.addEventListener) {
				document.addEventListener(\"DOMContentLoaded\", init, null);
			}
			window.onload = init;
			</script>";

		$search = db_escape_string($_GET["search"]);
		$search_mode = db_escape_string($_GET["smode"]);

		if ($search) {
			$search_query_part = "(upper(ttrss_entries.title) LIKE upper('%$search%') 
				OR ttrss_entries.content LIKE '%$search%') AND";
		} else {
			$search_query_part = "";
		}

		$view_query_part = "";

		if ($view_mode == "Adaptive") {
			if ($search) {
				$view_query_part = " ";
			} else if ($feed != -1) {
				$unread = getFeedUnread($link, $feed);
				if ($unread > 0) {
					$view_query_part = " unread = true AND ";
				}
			}
		}

		if ($view_mode == "Starred") {
			$view_query_part = " marked = true AND ";
		}

		if ($view_mode == "Unread") {
			$view_query_part = " unread = true AND ";
		}

		if ($limit && $limit != "All") {
			$limit_query_part = "LIMIT " . $limit;
		} 

		$vfeed_query_part = "";

		// override query strategy and enable feed display when searching globally
		if ($search && $search_mode == "All feeds") {
			$query_strategy_part = "ttrss_entries.id > 0";
			$vfeed_query_part = "ttrss_feeds.title AS feed_title,";		
		} else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
			$query_strategy_part = "ttrss_entries.id > 0";
			$vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
				id = feed_id) as feed_title,";
		} else if ($feed >= 0 && $search && $search_mode == "This category") {

			$vfeed_query_part = "ttrss_feeds.title AS feed_title,";		

			$tmp_result = db_query($link, "SELECT id 
				FROM ttrss_feeds WHERE cat_id = 
					(SELECT cat_id FROM ttrss_feeds WHERE id = '$feed') AND id != '$feed'");

			$cat_siblings = array();

			if (db_num_rows($tmp_result) > 0) {
				while ($p = db_fetch_assoc($tmp_result)) {
					array_push($cat_siblings, "feed_id = " . $p["id"]);
				}

				$query_strategy_part = sprintf("(feed_id = %d OR %s)", 
					$feed, implode(" OR ", $cat_siblings));

			} else {
				$query_strategy_part = "ttrss_entries.id > 0";
			}
			
		} else if ($feed >= 0) {

			if ($cat_view) {

				if ($feed > 0) {
					$query_strategy_part = "cat_id = '$feed'";
				} else {
					$query_strategy_part = "cat_id IS NULL";
				}

				$vfeed_query_part = "ttrss_feeds.title AS feed_title,";

			} else {		
				$tmp_result = db_query($link, "SELECT id 
					FROM ttrss_feeds WHERE parent_feed = '$feed'
					ORDER BY cat_id,title");
	
				$parent_ids = array();
	
				if (db_num_rows($tmp_result) > 0) {
					while ($p = db_fetch_assoc($tmp_result)) {
						array_push($parent_ids, "feed_id = " . $p["id"]);
					}
	
					$query_strategy_part = sprintf("(feed_id = %d OR %s)", 
						$feed, implode(" OR ", $parent_ids));
	
					$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
				} else {
					$query_strategy_part = "feed_id = '$feed'";
				}
			}
		} else if ($feed == -1) { // starred virtual feed
			$query_strategy_part = "marked = true";
			$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
		} else if ($feed <= -10) { // labels
			$label_id = -$feed - 11;

			$tmp_result = db_query($link, "SELECT sql_exp FROM ttrss_labels
				WHERE id = '$label_id'");
		
			$query_strategy_part = db_fetch_result($tmp_result, 0, "sql_exp");
	
			$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
		} else {
			$query_strategy_part = "id > 0"; // dumb
		}

		$order_by = "updated DESC";

//		if ($feed < -10) {
//			$order_by = "feed_id,updated DESC";
//		}

		$feed_title = "";

		if ($search && $search_mode == "All feeds") {
			$feed_title = "Global search results ($search)";
		} else if ($search && preg_match('/^-?[0-9][0-9]*$/', $feed) == false) {
			$feed_title = "Feed search results ($search, $feed)";
		} else if (preg_match('/^-?[0-9][0-9]*$/', $feed) == false) {
			$feed_title = $feed;
		} else if (preg_match('/^-?[0-9][0-9]*$/', $feed) != false && $feed >= 0) {

			if ($cat_view) {

				if ($feed != 0) {			
					$result = db_query($link, "SELECT title FROM ttrss_feed_categories
						WHERE id = '$feed' AND owner_uid = " . $_SESSION["uid"]);
					$feed_title = db_fetch_result($result, 0, "title");
				} else {
					$feed_title = "Uncategorized";
				}
			} else {
				
				$result = db_query($link, "SELECT title,site_url,last_error FROM ttrss_feeds 
					WHERE id = '$feed' AND owner_uid = " . $_SESSION["uid"]);
	
				$feed_title = db_fetch_result($result, 0, "title");
				$feed_site_url = db_fetch_result($result, 0, "site_url");
				$last_error = db_fetch_result($result, 0, "last_error");

			}

		} else if ($feed == -1) {
			$feed_title = "Starred articles";
		} else if ($feed < -10) {
			$label_id = -$feed - 11;
			$result = db_query($link, "SELECT description FROM ttrss_labels
				WHERE id = '$label_id'");
			$feed_title = db_fetch_result($result, 0, "description");
		} else {
			$feed_title = "?";
		}

		$feed_title = db_unescape_string($feed_title);

		if ($feed < -10) error_reporting (0);

		print "<div id=\"headlinesContainer\">";

		if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {

			if ($feed >= 0) {
				$feed_kind = "Feeds";
			} else {
				$feed_kind = "Labels";
			}

//			if (!$vfeed_query_part) {
			$content_query_part = "content as content_preview,";
//			} else {
//				$content_query_part = "";
//			}

			$query = "SELECT 
					ttrss_entries.id,ttrss_entries.title,
					SUBSTRING(updated,1,16) as updated,
					unread,feed_id,marked,link,last_read,
					SUBSTRING(last_read,1,19) as last_read_noms,
					$vfeed_query_part
					$content_query_part
					SUBSTRING(updated,1,19) as updated_noms
				FROM
					ttrss_entries,ttrss_user_entries,ttrss_feeds
				WHERE
				ttrss_user_entries.feed_id = ttrss_feeds.id AND
				ttrss_user_entries.ref_id = ttrss_entries.id AND
				ttrss_user_entries.owner_uid = '".$_SESSION["uid"]."' AND
				$search_query_part
				$view_query_part
				$query_strategy_part ORDER BY $order_by
				$limit_query_part";
				
			$result = db_query($link, $query);

			if ($_GET["debug"]) print $query;

		} else {
			// browsing by tag

			$feed_kind = "Tags";

			$result = db_query($link, "SELECT
				ttrss_entries.id as id,title,
				SUBSTRING(updated,1,16) as updated,
				unread,feed_id,
				marked,link,last_read,				
				SUBSTRING(last_read,1,19) as last_read_noms,
				$vfeed_query_part
				$content_query_part
				SUBSTRING(updated,1,19) as updated_noms
				FROM
					ttrss_entries,ttrss_user_entries,ttrss_tags
				WHERE
					ref_id = ttrss_entries.id AND
					ttrss_user_entries.owner_uid = '".$_SESSION["uid"]."' AND
					post_int_id = int_id AND tag_name = '$feed' AND
					$view_query_part
					$search_query_part
					$query_strategy_part ORDER BY $order_by
				$limit_query_part");	
		}

		if (!$result) {
			print "<div align='center'>
				Could not display feed (query failed). Please check label match syntax or local configuration.</div>";
			return;
		}

		function print_headline_subtoolbar($link, $feed_site_url, $feed_title, 
						$bottom = false, $rtl_content = false) {

			if (!$bottom) {
				$class = "headlinesSubToolbar";
				$tid = "headlineActionsTop";
			} else {
				$class = "invisible";
				$tid = "headlineActionsBottom";
			}

			print "<table class=\"$class\" id=\"$tid\"
				width=\"100%\" cellspacing=\"0\" cellpadding=\"0\"><tr>";

			if ($rtl_content) {
				$rtl_cpart = "RTL";
			} else {
				$rtl_cpart = "";
			}

			if (!get_pref($link, 'COMBINED_DISPLAY_MODE')) {

				print "<td class=\"headlineActions$rtl_cpart\">
					Select: 
								<a href='#' onclick=\"javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)\">All</a>,
								<a href='#' onclick=\"javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)\">Unread</a>,
								<a href='#' onclick=\"javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)\">None</a>
						&nbsp;&nbsp;
						Toggle: <a href='#' onclick=\"javascript:selectionToggleUnread()\">Unread</a>,
								<a href='#' onclick=\"javascript:selectionToggleMarked()\">Starred</a>";
				print "</td>";

			} else {

				print "<td class=\"headlineActions$rtl_cpart\">
					Select: 
								<a href=\"#\" onclick=\"javascript:cdmSelectArticles('all')\">All</a>,
								<a href=\"#\" onclick=\"javascript:cdmSelectArticles('unread')\">Unread</a>,
								<a href=\"#\" onclick=\"javascript:cdmSelectArticles('none')\">None</a>
						&nbsp;&nbsp;
						Toggle: <a href=\"#\" onclick=\"javascript:selectionToggleUnread(true)\">Unread</a>,
								<a href=\"#\" onclick=\"javascript:selectionToggleMarked(true)\">Starred</a>";
			
				print "</td>";

			}

			print "<td class=\"headlineTitle$rtl_cpart\">";
		
			if ($feed_site_url) {
				if (!$bottom) {
					$target = "target=\"_blank\"";
				}
				print "<a $target href=\"$feed_site_url\">$feed_title</a>";
			} else {
				print $feed_title;
			}
				
			print "</td>";
			print "</tr></table>";

		}
	
		if (db_num_rows($result) > 0) {

			print_headline_subtoolbar($link, $feed_site_url, $feed_title, false, 
				$rtl_content);

			if (!get_pref($link, 'COMBINED_DISPLAY_MODE')) {
				print "<table class=\"headlinesList\" id=\"headlinesList\" 
					cellspacing=\"0\" width=\"100%\">";
			}

			$lnum = 0;
	
			error_reporting (DEFAULT_ERROR_LEVEL);
	
			$num_unread = 0;
	
			while ($line = db_fetch_assoc($result)) {

				$class = ($lnum % 2) ? "even" : "odd";
	
				$id = $line["id"];
				$feed_id = $line["feed_id"];
	
				if ($line["last_read"] == "" && 
						($line["unread"] != "t" && $line["unread"] != "1")) {
	
					$update_pic = "<img id='FUPDPIC-$id' src=\"images/updated.png\" 
						alt=\"Updated\">";
				} else {
					$update_pic = "<img id='FUPDPIC-$id' src=\"images/blank_icon.gif\" 
						alt=\"Updated\">";
				}
	
				if ($line["unread"] == "t" || $line["unread"] == "1") {
					$class .= "Unread";
					++$num_unread;
					$is_unread = true;
				} else {
					$is_unread = false;
				}
	
				if ($line["marked"] == "t" || $line["marked"] == "1") {
					$marked_pic = "<img id=\"FMARKPIC-$id\" src=\"images/mark_set.png\" 
						alt=\"Reset mark\" onclick='javascript:toggleMark($id)'>";
				} else {
					$marked_pic = "<img id=\"FMARKPIC-$id\" src=\"images/mark_unset.png\" 
						alt=\"Set mark\" onclick='javascript:toggleMark($id)'>";
				}
	
				$content_link = "<a href=\"javascript:view($id,$feed_id);\">" .
					$line["title"] . "</a>";

				if (get_pref($link, 'HEADLINES_SMART_DATE')) {
					$updated_fmt = smart_date_time(strtotime($line["updated"]));
				} else {
					$short_date = get_pref($link, 'SHORT_DATE_FORMAT');
					$updated_fmt = date($short_date, strtotime($line["updated"]));
				}				

				if (get_pref($link, 'SHOW_CONTENT_PREVIEW')) {
					$content_preview = truncate_string(strip_tags($line["content_preview"]), 
						100);
				}

				if (!get_pref($link, 'COMBINED_DISPLAY_MODE')) {
					
					print "<tr class='$class' id='RROW-$id'>";
		
					print "<td class='hlUpdatePic'>$update_pic</td>";
		
					print "<td class='hlSelectRow'>
						<input type=\"checkbox\" onclick=\"toggleSelectRow(this)\"
							class=\"feedCheckBox\" id=\"RCHK-$id\">
						</td>";
		
					print "<td class='hlMarkedPic'>$marked_pic</td>";
		
					if ($line["feed_title"]) {			
						print "<td class='hlContent'>$content_link</td>";
						print "<td class='hlFeed'>
							<a href='javascript:viewfeed($feed_id)'>".
								$line["feed_title"]."</a>&nbsp;</td>";
					} else {			
						print "<td class='hlContent' valign='middle'>";
		
						print "<a href=\"javascript:view($id,$feed_id);\">" .
							$line["title"];
		
						if (get_pref($link, 'SHOW_CONTENT_PREVIEW') && !$rtl_tag) {
							if ($content_preview) {
								print "<span class=\"contentPreview\"> - $content_preview</span>";
							}
						}
		
						print "</a>";
						print "</td>";
					}
					
					print "<td class=\"hlUpdated\"><nobr>$updated_fmt&nbsp;</nobr></td>";
		
					print "</tr>";

				} else {
					
					if ($is_unread) {
						$add_class = "Unread";
					} else {
						$add_class = "";
					}	
					
					print "<div class=\"cdmArticle$add_class\" id=\"RROW-$id\">";

					print "<div class=\"cdmHeader\">";

					print "<div style=\"float : right\">$updated_fmt,
						<a class=\"cdmToggleLink\"
							href=\"javascript:toggleUnread($id)\">Toggle unread</a>
					</div>";
					
					print "<a class=\"title\" 
						onclick=\"javascript:toggleUnread($id, 0)\"
						target=\"new\" href=\"".$line["link"]."\">".$line["title"]."</a>";

					if ($line["feed_title"]) {	
						print "&nbsp;(<a href='javascript:viewfeed($feed_id)'>".$line["feed_title"]."</a>)";
					}

					print "</div>";

					print "<div class=\"cdmContent\">" . $line["content_preview"] . "</div>";

					print "<div style=\"float : right\">$marked_pic</div>
						<div lass=\"cdmFooter\">
							<input type=\"checkbox\" onclick=\"toggleSelectRowById(this, 
							'RROW-$id')\" class=\"feedCheckBox\" id=\"RCHK-$id\"></div>";

#					print "<div align=\"center\"><a class=\"cdmToggleLink\"
#							href=\"javascript:toggleUnread($id)\">
#							Toggle unread</a></div>";

					print "</div>";	

				}				
	
				++$lnum;
			}

			if (!get_pref($link, 'COMBINED_DISPLAY_MODE')) {			
				print "</table>";
			}

			print_headline_subtoolbar($link, 
				"javascript:catchupPage()", "Mark page as read", true, $rtl_content);


		} else {
			print "<div width='100%' align='center'>No articles found.</div>";
		}

		print "</div>";

		print "<script type=\"text/javascript\">
			document.onkeydown = hotkey_handler;
			// if (parent.daemon_enabled) parent.updateTitle('$feed_title');
			update_all_counters('$feed');
		</script>";
	
		print '
			<script type="text/javascript">
				/* for IE */
				function statechange() {
					if (document.readyState == "interactive") init();
				}
			
				if (document.readyState) {	
					if (document.readyState == "interactive" || document.readyState == "complete") {
						init();
					} else {
						document.onreadystatechange = statechange;
					}
				}
			</script>';

		print "</body></html>";
	}

	if ($op == "pref-rpc") {

		$subop = $_GET["subop"];

		if ($subop == "unread") {
			$ids = split(",", db_escape_string($_GET["ids"]));
			foreach ($ids as $id) {
				db_query($link, "UPDATE ttrss_user_entries SET unread = true 
					WHERE feed_id = '$id' AND owner_uid = ".$_SESSION["uid"]);
			}

			print "Marked selected feeds as unread.";
		}

		if ($subop == "read") {
			$ids = split(",", db_escape_string($_GET["ids"]));
			foreach ($ids as $id) {
				db_query($link, "UPDATE ttrss_user_entries 
					SET unread = false,last_read = NOW() WHERE 
						feed_id = '$id' AND owner_uid = ".$_SESSION["uid"]);
			}

			print "Marked selected feeds as read.";

		}

	}

	if ($op == "pref-feeds") {
	
		$subop = $_REQUEST["subop"];
		$quiet = $_REQUEST["quiet"];

		if ($subop == "massSubscribe") {
			$ids = split(",", db_escape_string($_GET["ids"]));

			$subscribed = array();

			foreach ($ids as $id) {
				$result = db_query($link, "SELECT feed_url,title FROM ttrss_feeds
					WHERE id = '$id'");

				$feed_url = db_fetch_result($result, 0, "feed_url");
				$title = db_fetch_result($result, 0, "title");

				$result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
					feed_url = '$feed_url' AND owner_uid = " . $_SESSION["uid"]);

				if (db_num_rows($result) == 0) {			
					$result = db_query($link,
						"INSERT INTO ttrss_feeds (owner_uid,feed_url,title,cat_id) 
						VALUES ('".$_SESSION["uid"]."', '$feed_url', '$title', NULL)");

					array_push($subscribed, $title);
				}
			}

			if (count($subscribed) > 0) {
				print "<div class=\"notice\">";
				print "<b>Subscribed to feeds:</b>";
				print "<ul class=\"nomarks\">";
				foreach ($subscribed as $title) {
					print "<li>$title</li>";
				}
				print "</ul>";
				print "</div>";
			}
		}		

		if ($subop == "browse") {

			if (!ENABLE_FEED_BROWSER) {
				print "Feed browser is administratively disabled.";
				return;
			}

			print "<div id=\"infoBoxTitle\">Other feeds: Top 25</div>";
			
			print "<div class=\"infoBoxContents\">";

			print "<p>Showing top 25 registered feeds, sorted by popularity:</p>";

			$result = db_query($link, "SELECT feed_url,count(id) AS subscribers 
				FROM ttrss_feeds 
				WHERE auth_login = '' AND auth_pass = '' AND private = false
				GROUP BY feed_url ORDER BY subscribers DESC LIMIT 25");
			
			print "<ul class='browseFeedList' id='browseFeedList'>";

			$feedctr = 0;
			
			while ($line = db_fetch_assoc($result)) {
				$feed_url = $line["feed_url"];
				$subscribers = $line["subscribers"];

				$sub_result = db_query($link, "SELECT id
					FROM ttrss_feeds WHERE feed_url = '$feed_url' AND owner_uid =" . 
					$_SESSION["uid"]);

				if (db_num_rows($sub_result) > 0) {
					continue; // already subscribed
				}
			
				$det_result = db_query($link, "SELECT site_url,title,id 
					FROM ttrss_feeds WHERE feed_url = '$feed_url' LIMIT 1");

				$details = db_fetch_assoc($det_result);
			
				$icon_file = ICONS_DIR . "/" . $details["id"] . ".ico";

				if (file_exists($icon_file) && filesize($icon_file) > 0) {
						$feed_icon = "<img class=\"tinyFeedIcon\"	src=\"" . ICONS_URL . 
							"/".$details["id"].".ico\">";
				} else {
					$feed_icon = "<img class=\"tinyFeedIcon\" src=\"images/blank_icon.gif\">";
				}

				$check_box = "<input onclick='toggleSelectListRow(this)' class='feedBrowseCB' 
					type=\"checkbox\" id=\"FBCHK-" . $details["id"] . "\">";

				$class = ($feedctr % 2) ? "even" : "odd";

				print "<li class='$class' id=\"FBROW-".$details["id"]."\">$check_box".
					"$feed_icon " . db_unescape_string($details["title"]) . 
					"&nbsp;<span class='subscribers'>($subscribers)</span></li>";

					++$feedctr;
			}

			if ($feedctr == 0) {
				print "<li>No feeds found to subscribe.</li>";
			}

			print "</ul>";

			print "<div align='center'>
				<input type=\"submit\" class=\"button\" 
				onclick=\"feedBrowserSubscribe()\" value=\"Subscribe\">
				<input type='submit' class='button'			
				onclick=\"closeInfoBox()\" value=\"Cancel\"></div>";

			print "</div>";
			return;
		}

		if ($subop == "editfeed") {
			$feed_id = db_escape_string($_GET["id"]);

			$result = db_query($link, 
				"SELECT * FROM ttrss_feeds WHERE id = '$feed_id' AND
					owner_uid = " . $_SESSION["uid"]);

			$title = htmlspecialchars(db_unescape_string(db_fetch_result($result,
				0, "title")));

			$icon_file = ICONS_DIR . "/$feed_id.ico";
	
			if (file_exists($icon_file) && filesize($icon_file) > 0) {
					$feed_icon = "<img width=\"16\" height=\"16\"
						src=\"" . ICONS_URL . "/$feed_id.ico\">";
			} else {
				$feed_icon = "";
			}

			print "<div id=\"infoBoxTitle\">Feed editor</div>";

			print "<div class=\"infoBoxContents\">";

#			print "<h1>$feed_icon $title</h1>";

			print "<table width='100%'>";

#			$row_class = "odd";

			print "<tr class='$row_class'><td>Title:</td>";
			print "<td><input id=\"iedit_title\" value=\"$title\"></td></tr>";

			$feed_url = db_fetch_result($result, 0, "feed_url");
			$feed_url = htmlspecialchars(db_unescape_string(db_fetch_result($result,
				0, "feed_url")));
#			$row_class = toggleEvenOdd($row_class);

			print "<tr class='$row_class'><td>Feed URL:</td>";
			print "<td><input id=\"iedit_link\" value=\"$feed_url\"></td></tr>";

			if (get_pref($link, 'ENABLE_FEED_CATS')) {

				$cat_id = db_fetch_result($result, 0, "cat_id");

#				$row_class = toggleEvenOdd($row_class);

				print "<tr class='$row_class'><td>Category:</td>";
				print "<td>";
				print "<select id=\"iedit_fcat\">";
				print "<option id=\"0\">Uncategorized</option>";

				$tmp_result = db_query($link, "SELECT id,title FROM ttrss_feed_categories
					WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");

				if (db_num_rows($tmp_result) > 0) {
					print "<option disabled>--------</option>";
				}

				while ($tmp_line = db_fetch_assoc($tmp_result)) {
					if ($tmp_line["id"] == $cat_id) {
						$is_selected = "selected";
					} else {
						$is_selected = "";
					}
					printf("<option $is_selected id='%d'>%s</option>", 
						$tmp_line["id"], $tmp_line["title"]);
				}

				print "</select></td>";
				print "</td></tr>";
	
			}

			$update_interval = db_fetch_result($result, 0, "update_interval");
#			$row_class = toggleEvenOdd($row_class);

			print "<tr class='$row_class'><td>Update Interval:</td>";
//			print "<td><input id=\"iedit_updintl\" 
//				value=\"$update_interval\"></td></tr>";

			print "<td>";

			print "<select id=\"iedit_updintl\">";
			
			foreach (array_keys($update_intervals) as $i) {
			
				if ($i == $update_interval) {
					$selected = "selected";
				} else {
					$selected = "";
				}					
				print "<option $selected id=\"$i\">" . $update_intervals[$i] . "</option>";
			}
				
			print "</select>";

			print "</td>";

#			$row_class = toggleEvenOdd($row_class);

			print "<tr class='$row_class'><td>Link to:</td><td>";

			$tmp_result = db_query($link, "SELECT COUNT(id) AS count
				FROM ttrss_feeds WHERE parent_feed = '$feed_id'");

			$linked_count = db_fetch_result($tmp_result, 0, "count");

			$parent_feed = db_fetch_result($result, 0, "parent_feed");

			if ($linked_count > 0) {
				$disabled = "disabled";
			}

			print "<select $disabled id=\"iedit_parent_feed\">";
			
			print "<option id=\"0\">Not linked</option>";

			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				if ($cat_id) {
					$cat_qpart = "AND cat_id = '$cat_id'";
				} else {
					$cat_qpart = "AND cat_id IS NULL";
				}
			}

			$tmp_result = db_query($link, "SELECT id,title FROM ttrss_feeds
				WHERE id != '$feed_id' AND owner_uid = ".$_SESSION["uid"]." 
					$cat_qpart ORDER BY title");

				if (db_num_rows($tmp_result) > 0) {
					print "<option disabled>--------</option>";
				}

				while ($tmp_line = db_fetch_assoc($tmp_result)) {
					if ($tmp_line["id"] == $parent_feed) {
						$is_selected = "selected";
					} else {
						$is_selected = "";
					}
					printf("<option $is_selected id='%d'>%s</option>", 
						$tmp_line["id"], $tmp_line["title"]);
				}

			print "</select>";
			print "</td></tr>";

			$purge_interval = db_fetch_result($result, 0, "purge_interval");
#			$row_class = toggleEvenOdd($row_class);

			print "<tr class='$row_class'><td>Purge Days:</td>";
//			print "<td><input id=\"iedit_purgintl\" 
//				value=\"$purge_interval\"></td></tr>";

			print "<td>";

			print "<select id=\"iedit_purgintl\">";
			
			foreach (array_keys($purge_intervals) as $i) {
			
				if ($i == $purge_interval) {
					$selected = "selected";
				} else {
					$selected = "";
				}					
				print "<option $selected id=\"$i\">" . $purge_intervals[$i] . "</option>";
			}
				
			print "</select>";

			print "</td>";

//			print "<tr><td colspan=\"2\"><b>Authentication</b></td></tr>";

#			$row_class = toggleEvenOdd($row_class);
			$auth_login = db_fetch_result($result, 0, "auth_login");

			print "<tr class='$row_class'><td>Login:</td>";
			print "<td><input id=\"iedit_login\" 
				value=\"$auth_login\"></td></tr>";

#			$row_class = toggleEvenOdd($row_class);
			$auth_pass = db_fetch_result($result, 0, "auth_pass");

			print "<tr class='$row_class'><td>Password:</td>";
			print "<td><input type=\"password\" id=\"iedit_pass\" 
				value=\"$auth_pass\"></td></tr>";

#			$row_class = toggleEvenOdd($row_class);
			$private = sql_bool_to_bool(db_fetch_result($result, 0, "private"));

			if ($private) {
				$checked = "checked";
			} else {
				$checked = "";
			}

			print "<tr class='$row_class'><td valign='top'>Options:</td>";
			print "<td><input type=\"checkbox\" id=\"iedit_private\" 
				$checked><label for=\"iedit_private\">Hide from feed browser</label>";

			$rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));

			if ($rtl_content) {
				$checked = "checked";
			} else {
				$checked = "";
			}

			print "<br><input type=\"checkbox\" id=\"iedit_rtl\" 
				$checked><label for=\"iedit_rtl\">Right-to-left content</label>";
			
			print "</td></tr>";

			print "</table>";
			print "</div>";

			print "<div align='center'>
				<input type=\"submit\" class=\"button\" 
				onclick=\"feedEditSave()\" value=\"Save\">
				<input type='submit' class='button'			
				onclick=\"feedEditCancel()\" value=\"Cancel\"></div>";
			return;
		}

		if ($subop == "editSave") {
			$feed_title = db_escape_string($_POST["t"]);
			$feed_link = db_escape_string($_POST["l"]);
			$upd_intl = db_escape_string($_POST["ui"]);
			$purge_intl = db_escape_string($_POST["pi"]);
			$feed_id = db_escape_string($_POST["id"]);
			$cat_id = db_escape_string($_POST["catid"]);
			$auth_login = db_escape_string($_POST["login"]);
			$auth_pass = db_escape_string($_POST["pass"]);
			$parent_feed = db_escape_string($_POST["pfeed"]);
			$private = db_escape_string($_POST["is_pvt"]);
			$rtl_content = db_escape_string($_POST["is_rtl"]);

			if (strtoupper($upd_intl) == "DEFAULT")
				$upd_intl = 0;

			if (strtoupper($upd_intl) == "DISABLED")
				$upd_intl = -1;

			if (strtoupper($purge_intl) == "DEFAULT")
				$purge_intl = 0;

			if (strtoupper($purge_intl) == "DISABLED")
				$purge_intl = -1;

			if ($cat_id != 0) {
				$category_qpart = "cat_id = '$cat_id'";
			} else {
				$category_qpart = 'cat_id = NULL';
			}

			if ($parent_feed != 0) {
				$parent_qpart = "parent_feed = '$parent_feed'";
			} else {
				$parent_qpart = 'parent_feed = NULL';
			}

			$result = db_query($link, "UPDATE ttrss_feeds SET 
				$category_qpart,
				$parent_qpart,
				title = '$feed_title', feed_url = '$feed_link',
				update_interval = '$upd_intl',
				purge_interval = '$purge_intl',
				auth_login = '$auth_login',
				auth_pass = '$auth_pass',
				private = $private,
				rtl_content = $rtl_content
				WHERE id = '$feed_id' AND owner_uid = " . $_SESSION["uid"]);
		}

		if ($subop == "saveCat") {
			$cat_title = db_escape_string($_GET["title"]);
			$cat_id = db_escape_string($_GET["id"]);

			$result = db_query($link, "UPDATE ttrss_feed_categories SET
				title = '$cat_title' WHERE id = '$cat_id' AND owner_uid = ".$_SESSION["uid"]);

		}

		if ($subop == "remove") {

			if (!WEB_DEMO_MODE) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				foreach ($ids as $id) {
					db_query($link, "DELETE FROM ttrss_feeds 
						WHERE id = '$id' AND owner_uid = " . $_SESSION["uid"]);

					$icons_dir = ICONS_DIR;
					
					if (file_exists($icons_dir . "/$id.ico")) {
						unlink($icons_dir . "/$id.ico");
					}
				}
			}
		}

		if ($subop == "add") {
		
			if (!WEB_DEMO_MODE) {

				$feed_link = db_escape_string(trim($_GET["link"]));
				$cat_id = db_escape_string($_GET["cid"]);

				if (subscribe_to_feed($link, $feed_link, $cat_id)) {
					print "Added feed.";
				} else {
					print "<div class=\"warning\">
						Feed <b>$feed_link</b> already exists in the database.
					</div>";
				}
			}
		}

		if ($subop == "addCat") {

			if (!WEB_DEMO_MODE) {

				$feed_cat = db_escape_string(trim($_GET["cat"]));

				$result = db_query($link,
					"SELECT id FROM ttrss_feed_categories
					WHERE title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);

				if (db_num_rows($result) == 0) {
					
					$result = db_query($link,
						"INSERT INTO ttrss_feed_categories (owner_uid,title) 
						VALUES ('".$_SESSION["uid"]."', '$feed_cat')");

				} else {

					print "<div class=\"warning\">
						Category <b>$feed_cat</b> already exists in the database.
					</div>";
				}


			}
		}

		if ($subop == "removeCats") {

			if (!WEB_DEMO_MODE) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				foreach ($ids as $id) {

					db_query($link, "BEGIN");

					$result = db_query($link, 
						"SELECT count(id) as num_feeds FROM ttrss_feeds 
							WHERE cat_id = '$id'");

					$num_feeds = db_fetch_result($result, 0, "num_feeds");

					if ($num_feeds == 0) {
						db_query($link, "DELETE FROM ttrss_feed_categories
							WHERE id = '$id' AND owner_uid = " . $_SESSION["uid"]);
					} else {

						print "<div class=\"warning\">
							Unable to delete non empty feed categories.</div>";
							
					}

					db_query($link, "COMMIT");
				}
			}
		}

		if ($subop == "categorize") {

			if (!WEB_DEMO_MODE) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				$cat_id = db_escape_string($_GET["cat_id"]);

				if ($cat_id == 0) {
					$cat_id_qpart = 'NULL';
				} else {
					$cat_id_qpart = "'$cat_id'";
				}

				db_query($link, "BEGIN");

				foreach ($ids as $id) {
				
					db_query($link, "UPDATE ttrss_feeds SET cat_id = $cat_id_qpart
						WHERE id = '$id' AND owner_uid = " . $_SESSION["uid"]);
				}

				db_query($link, "COMMIT");
			}

		}

		if ($quiet) return;

//		print "<h3>Edit Feeds</h3>";

		$result = db_query($link, "SELECT id,title,feed_url,last_error 
			FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);

		if (db_num_rows($result) > 0) {
		
			print "<div class=\"warning\">";
			
//			print"<img class=\"closeButton\" 
//				onclick=\"javascript:hideParentElement(this);\" src=\"images/close.png\">";
	
			print "<a href=\"javascript:showBlockElement('feedUpdateErrors')\">
				<b>Some feeds have update errors (click for details)</b></a>";

			print "<ul id=\"feedUpdateErrors\" class=\"nomarks\">";
						
			while ($line = db_fetch_assoc($result)) {
				print "<li>" . $line["title"] . " (" . $line["feed_url"] . "): " . 
					$line["last_error"];
			}

			print "</ul>";
			print "</div>";

		}

		$feed_search = db_escape_string($_GET["search"]);

		if (array_key_exists("search", $_GET)) {
			$_SESSION["prefs_feed_search"] = $feed_search;
		} else {
			$feed_search = $_SESSION["prefs_feed_search"];
		}

		print "<table width='100%' class=\"prefGenericAddBox\" 
			cellspacing='0' cellpadding='0'><tr>
			<td>
				<input id=\"fadd_link\" 
					onchange=\"javascript:addFeed()\"
					onkeyup=\"toggleSubmitNotEmpty(this, 'fadd_submit_btn')\"
					size=\"40\">
				<input type=\"submit\" class=\"button\"
					disabled=\"true\" id=\"fadd_submit_btn\"
					onclick=\"addFeed()\" value=\"Subscribe\">";

		if (ENABLE_FEED_BROWSER && !SINGLE_USER_MODE) {
			print " <input type=\"submit\" class=\"button\"
				onclick=\"javascript:browseFeeds()\" value=\"Top 25\">";
		}
		
		print "</td><td align='right'>
				<input id=\"feed_search\" size=\"20\"  
					onchange=\"javascript:updateFeedList()\" value=\"$feed_search\">
				<input type=\"submit\" class=\"button\" 
				onclick=\"javascript:updateFeedList()\" value=\"Search\">
			</td>			
			</tr></table>";

		$feeds_sort = db_escape_string($_GET["sort"]);

		if (!$feeds_sort || $feeds_sort == "undefined") {
			$feeds_sort = $_SESSION["pref_sort_feeds"];			
			if (!$feeds_sort) $feeds_sort = "title";
		}

		$_SESSION["pref_sort_feeds"] = $feeds_sort;

		if ($feed_search) {
			$search_qpart = "(UPPER(F1.title) LIKE UPPER('%$feed_search%') OR
				UPPER(F1.feed_url) LIKE UPPER('%$feed_search%')) AND";
		} else {
			$search_qpart = "";
		}

		$result = db_query($link, "SELECT 
				F1.id,
				F1.title,
				F1.feed_url,
				substring(F1.last_updated,1,16) AS last_updated,
				F1.parent_feed,
				F1.update_interval,
				F1.purge_interval,
				F1.cat_id,
				F2.title AS parent_title,
				C1.title AS category				
			FROM 
				ttrss_feeds AS F1 
				LEFT JOIN ttrss_feeds AS F2
					ON (F1.parent_feed = F2.id)
				LEFT JOIN ttrss_feed_categories AS C1
					ON (F1.cat_id = C1.id)
			WHERE 
				$search_qpart F1.owner_uid = '".$_SESSION["uid"]."' 			
			ORDER by category,$feeds_sort,title");

		if (db_num_rows($result) != 0) {

			print "<div id=\"infoBoxShadow\"><div id=\"infoBox\">PLACEHOLDER</div></div>";

			print "<p><table width=\"100%\" cellspacing=\"0\" 
				class=\"prefFeedList\" id=\"prefFeedList\">";
			print "<tr><td class=\"selectPrompt\" colspan=\"8\">
				Select: 
					<a href=\"javascript:selectPrefRows('feed', true)\">All</a>,
					<a href=\"javascript:selectPrefRows('feed', false)\">None</a>
				</td</tr>";

			if (!get_pref($link, 'ENABLE_FEED_CATS')) {
				print "<tr class=\"title\">
					<td width='5%' align='center'>&nbsp;</td>
					<td width='40%'><a href=\"javascript:updateFeedList('title')\">Title</a></td>
					<td width='45%'><a href=\"javascript:updateFeedList('feed_url')\">Feed</a></td>
					<td width='15%' align='right'><a href=\"javascript:updateFeedList('last_updated')\">Updated</a></td>";
			}
			
			$lnum = 0;

			$cur_cat_id = -1;
			
			while ($line = db_fetch_assoc($result)) {
	
				$feed_id = $line["id"];
				$cat_id = $line["cat_id"];

				$edit_title = htmlspecialchars(db_unescape_string($line["title"]));
				$edit_link = htmlspecialchars(db_unescape_string($line["feed_url"]));
				$edit_cat = htmlspecialchars(db_unescape_string($line["category"]));

				if (!$edit_cat) $edit_cat = "Uncategorized";

				$last_updated = $line["last_updated"];

				if (get_pref($link, 'HEADLINES_SMART_DATE')) {
					$last_updated = smart_date_time(strtotime($last_updated));
				} else {
					$short_date = get_pref($link, 'SHORT_DATE_FORMAT');
					$last_updated = date($short_date, strtotime($last_updated));
				}

				if (get_pref($link, 'ENABLE_FEED_CATS') && $cur_cat_id != $cat_id) {
					$lnum = 0;
				
					print "<tr><td colspan=\"6\" class=\"feedEditCat\">$edit_cat</td></tr>";

					print "<tr class=\"title\">
						<td width='5%'>&nbsp;</td>";

					if (get_pref($link, 'ENABLE_FEED_ICONS')) {
						print "<td width='3%'>&nbsp;</td>";
					}

					print "<td width='40%'><a href=\"javascript:updateFeedList('title')\">Title</a></td>
						<td width='45%'><a href=\"javascript:updateFeedList('feed_url')\">Feed</a></td>
						<td width='15%' align='right'><a href=\"javascript:updateFeedList('last_updated')\">Updated</a></td>";

					$cur_cat_id = $cat_id;
				}

				$class = ($lnum % 2) ? "even" : "odd";
				$this_row_id = "id=\"FEEDR-$feed_id\"";

				print "<tr class=\"$class\" $this_row_id>";
	
				$icon_file = ICONS_DIR . "/$feed_id.ico";
	
				if (file_exists($icon_file) && filesize($icon_file) > 0) {
						$feed_icon = "<img class=\"tinyFeedIcon\"	src=\"" . ICONS_URL . "/$feed_id.ico\">";
				} else {
					$feed_icon = "<img class=\"tinyFeedIcon\" src=\"images/blank_icon.gif\">";
				}
				
				print "<td class='feedSelect'><input onclick='toggleSelectPrefRow(this, \"feed\");' 
				type=\"checkbox\" id=\"FRCHK-".$line["id"]."\"></td>";

				if (get_pref($link, 'ENABLE_FEED_ICONS')) {
					print "<td class='feedIcon'>$feed_icon</td>";		
				}

				$edit_title = truncate_string($edit_title, 40);
				$edit_link = truncate_string($edit_link, 60);

				$parent_title = $line["parent_title"];
				if ($parent_title) {
					$parent_title = "<span class='groupPrompt'>(linked to 
						$parent_title)</span>";
				}

				print "<td><a href=\"javascript:editFeed($feed_id);\">" . 
					"$edit_title $parent_title" . "</a></td>";		
					
				print "<td><a href=\"javascript:editFeed($feed_id);\">" . 
					$edit_link . "</a></td>";		

				print "<td align='right'><a href=\"javascript:editFeed($feed_id);\">" . 
					"$last_updated</a></td>";

				print "</tr>";
	
				++$lnum;
			}
	
			print "</table>";

			print "<p><span id=\"feedOpToolbar\">";
	
			if ($subop == "edit") {
				print "Edit feed:&nbsp;
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:feedEditCancel()\" value=\"Cancel\">
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:feedEditSave()\" value=\"Save\">";
			} else {
	
				print "
					Selection:&nbsp;
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:editSelectedFeed()\" value=\"Edit\">
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:removeSelectedFeeds()\" value=\"Unsubscribe\">";

				if (get_pref($link, 'ENABLE_FEED_CATS')) {

					print "&nbsp;|&nbsp;";				

					$result = db_query($link, "SELECT title,id FROM ttrss_feed_categories
						WHERE owner_uid = ".$_SESSION["uid"]."
						ORDER BY title");

					print "<select id=\"sfeed_set_fcat\" disabled=\"true\">";
					print "<option id=\"0\">Uncategorized</option>";

					if (db_num_rows($result) != 0) {
		
						print "<option disabled>--------</option>";

						while ($line = db_fetch_assoc($result)) {
							printf("<option id='%d'>%s</option>", 
								$line["id"], $line["title"]);
						}		
					}

					print "</select>";

					print " <input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:categorizeSelectedFeeds()\" value=\"Recategorize\">";

				}
				
				print "</span>
					&nbsp;All feeds: <input type=\"submit\" 
							class=\"button\" onclick=\"gotoExportOpml()\" 
							value=\"Export OPML\">";			
				}
		} else {

			print "<p>No feeds defined.</p>";

		}

		if (get_pref($link, 'ENABLE_FEED_CATS')) {

			print "<h3>Edit Categories</h3>";

	//		print "<h3>Categories</h3>";

			print "<div class=\"prefGenericAddBox\">
				<input id=\"fadd_cat\" 
					onchange=\"javascript:addFeedCat()\"
					onkeyup=\"toggleSubmitNotEmpty(this, 'catadd_submit_btn')\"
					size=\"40\">&nbsp;
				<input 
					type=\"submit\" class=\"button\" disabled=\"true\" id=\"catadd_submit_btn\"
					onclick=\"javascript:addFeedCat()\" value=\"Create category\"></div>";
	
			$result = db_query($link, "SELECT title,id FROM ttrss_feed_categories
				WHERE owner_uid = ".$_SESSION["uid"]."
				ORDER BY title");

			if (db_num_rows($result) != 0) {
	
				print "<p><table width=\"100%\" class=\"prefFeedCatList\" 
					cellspacing=\"0\" id=\"prefFeedCatList\">";

				print "<tr><td class=\"selectPrompt\" colspan=\"8\">
				Select: 
					<a href=\"javascript:selectPrefRows('fcat', true)\">All</a>,
					<a href=\"javascript:selectPrefRows('fcat', false)\">None</a>
				</td</tr>";

				print "<tr class=\"title\">
							<td width=\"5%\">&nbsp;</td><td width=\"80%\">Title</td>
						</tr>";
						
				$lnum = 0;
				
				while ($line = db_fetch_assoc($result)) {
		
					$class = ($lnum % 2) ? "even" : "odd";
		
					$cat_id = $line["id"];
		
					$edit_cat_id = $_GET["id"];
		
					if ($subop == "editCat" && $cat_id != $edit_cat_id) {
						$class .= "Grayed";
						$this_row_id = "";
					} else {
						$this_row_id = "id=\"FCATR-$cat_id\"";
					}
		
					print "<tr class=\"$class\" $this_row_id>";
		
					$edit_title = htmlspecialchars(db_unescape_string($line["title"]));
		
					if (!$edit_cat_id || $subop != "editCat") {
		
						print "<td align='center'><input onclick='toggleSelectPrefRow(this, \"fcat\");' 
							type=\"checkbox\" id=\"FCCHK-".$line["id"]."\"></td>";
		
						print "<td><a href=\"javascript:editFeedCat($cat_id);\">" . 
							$edit_title . "</a></td>";		
		
					} else if ($cat_id != $edit_cat_id) {
		
						print "<td><input disabled=\"true\" type=\"checkbox\" 
							id=\"FRCHK-".$line["id"]."\"></td>";
		
						print "<td>$edit_title</td>";		
		
					} else {
		
						print "<td><input disabled=\"true\" type=\"checkbox\" checked></td>";
		
						print "<td><input id=\"iedit_title\" value=\"$edit_title\"></td>";
						
					}
					
					print "</tr>";
		
					++$lnum;
				}
	
				print "</table>";
	
				print "<p id=\"catOpToolbar\">";
	
				if ($subop == "editCat") {
					print "Edit category:&nbsp;
						<input type=\"submit\" class=\"button\"
							onclick=\"javascript:feedCatEditCancel()\" value=\"Cancel\">
						<input type=\"submit\" class=\"button\"
							onclick=\"javascript:feedCatEditSave()\" value=\"Save\">";
					} else {
		
					print "
						Selection:&nbsp;
					<input type=\"submit\" class=\"button\" disabled=\"true\"
						onclick=\"javascript:editSelectedFeedCat()\" value=\"Edit\">
					<input type=\"submit\" class=\"button\" disabled=\"true\"
						onclick=\"javascript:removeSelectedFeedCats()\" value=\"Remove\">";
	
				}
	
			} else {
				print "<p>No feed categories defined.</p>";
 			}
		}

		print "<h3>Import OPML</h3>
		<form	enctype=\"multipart/form-data\" method=\"POST\" action=\"opml.php\">
			File: <input id=\"opml_file\" name=\"opml_file\" type=\"file\">&nbsp;
			<input class=\"button\" name=\"op\" onclick=\"return validateOpmlImport();\"
				type=\"submit\" value=\"Import\">
			</form>";

	}

	if ($op == "pref-filters") {

		$subop = $_GET["subop"];
		$quiet = $_GET["quiet"];

		if ($subop == "editSave") {

			$regexp = db_escape_string($_GET["r"]);
			$match = db_escape_string($_GET["m"]);
			$filter_id = db_escape_string($_GET["id"]);
			$feed_id = db_escape_string($_GET["fid"]);
			$action_id = db_escape_string($_GET["aid"]); 

			if (!$feed_id) {
				$feed_id = 'NULL';
			} else {
				$feed_id = sprintf("'%s'", db_escape_string($feed_id));
			}
			
			$result = db_query($link, "UPDATE ttrss_filters SET 
				reg_exp = '$regexp', 
				feed_id = $feed_id,
				action_id = '$action_id',
				filter_type = (SELECT id FROM ttrss_filter_types WHERE
					description = '$match')
				WHERE id = '$filter_id'");
		}

		if ($subop == "remove") {

			if (!WEB_DEMO_MODE) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				foreach ($ids as $id) {
					db_query($link, "DELETE FROM ttrss_filters WHERE id = '$id'");
					
				}
			}
		}

		if ($subop == "add") {
		
			if (!WEB_DEMO_MODE) {

				$regexp = db_escape_string(trim($_GET["regexp"]));
				$match = db_escape_string(trim($_GET["match"]));
				$feed_id = db_escape_string($_GET["fid"]);
				$action_id = db_escape_string($_GET["aid"]); 

				if (!$feed_id) {
					$feed_id = 'NULL';
				} else {
					$feed_id = sprintf("'%s'", db_escape_string($feed_id));
				}

				$result = db_query($link,
					"INSERT INTO ttrss_filters (reg_exp,filter_type,owner_uid,feed_id,
						action_id) 
					VALUES 
						('$regexp', (SELECT id FROM ttrss_filter_types WHERE
							description = '$match'),'".$_SESSION["uid"]."', 
							$feed_id, '$action_id')");
			} 
		}

		if ($quiet) return;

		print "<div id=\"infoBoxShadow\">
			<div id=\"infoBox\">PLACEHOLDER</div></div>";

		$result = db_query($link, "SELECT description 
			FROM ttrss_filter_types ORDER BY description");

		$filter_types = array();

		while ($line = db_fetch_assoc($result)) {
			array_push($filter_types, $line["description"]);
		}

/*		print "<div class=\"prefGenericAddBox\">
		<input id=\"fadd_regexp\" size=\"40\">&nbsp;";
		
		print_select("fadd_match", "Title", $filter_types);	

		print "&nbsp;<select id=\"fadd_feed\">";

		print "<option selected id=\"0\">All feeds</option>";

		$result = db_query($link, "SELECT id,title FROM ttrss_feeds
			WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");

		if (db_num_rows($result) > 0) {
			print "<option disabled>--------</option>";
		}

		while ($line = db_fetch_assoc($result)) {
			printf("<option id='%d'>%s</option>", $line["id"], 
				db_unescape_string($line["title"]));
		}

		print "</select>&nbsp;";

		print "&nbsp;Action: ";

		print "<select id=\"fadd_action\">";

		$result = db_query($link, "SELECT id,description FROM ttrss_filter_actions 
			ORDER BY name");

		while ($line = db_fetch_assoc($result)) {			
			printf("<option id='%d'>%s</option>", $line["id"], $line["description"]);
		}

		print "</select>&nbsp;";

/*		print "<input type=\"submit\" 
			class=\"button\" onclick=\"javascript:testFilter()\" 
			value=\"Test filter\"> "; */

/*		print "<input type=\"submit\" 
			class=\"button\" onclick=\"javascript:addFilter()\" 
			value=\"Create filter\">"; */

		print "<input type=\"submit\" 
			class=\"button\" 
			onclick=\"javascript:displayDlg('quickAddFilter', false)\" 
			value=\"Create filter\">"; 

//		print "</div>";

		$result = db_query($link, "SELECT 
				ttrss_filters.id AS id,reg_exp,
				ttrss_filter_types.name AS filter_type_name,
				ttrss_filter_types.description AS filter_type_descr,
				feed_id,
				ttrss_filter_actions.description AS action_description,
				ttrss_feeds.title AS feed_title
			FROM 
				ttrss_filter_types,ttrss_filter_actions,ttrss_filters LEFT JOIN
					ttrss_feeds ON (ttrss_filters.feed_id = ttrss_feeds.id)
			WHERE
				filter_type = ttrss_filter_types.id AND
				ttrss_filter_actions.id = action_id AND
				ttrss_filters.owner_uid = ".$_SESSION["uid"]."
			ORDER by reg_exp");

		if (db_num_rows($result) != 0) {

			print "<p><table width=\"100%\" cellspacing=\"0\" class=\"prefFilterList\" 
				id=\"prefFilterList\">";

			print "<tr><td class=\"selectPrompt\" colspan=\"8\">
				Select: 
					<a href=\"javascript:selectPrefRows('filter', true)\">All</a>,
					<a href=\"javascript:selectPrefRows('filter', false)\">None</a>
				</td</tr>";

			print "<tr class=\"title\">
						<td align='center' width=\"5%\">&nbsp;</td>
						<td width=\"20%\">Filter expression</td>
						<td width=\"20%\">Feed</td>
						<td width=\"15%\">Match</td>
						<td width=\"15%\">Action</td>";

			$lnum = 0;
			
			while ($line = db_fetch_assoc($result)) {
	
				$class = ($lnum % 2) ? "even" : "odd";
	
				$filter_id = $line["id"];
				$edit_filter_id = $_GET["id"];
	
				if ($subop == "edit" && $filter_id != $edit_filter_id) {
					$class .= "Grayed";
					$this_row_id = "";
				} else {
					$this_row_id = "id=\"FILRR-$filter_id\"";
				}
	
				print "<tr class=\"$class\" $this_row_id>";
	
				$line["regexp"] = htmlspecialchars($line["reg_exp"]);
	
				if (!$line["feed_title"]) $line["feed_title"] = "All feeds";
	
				if (!$edit_filter_id || $subop != "edit") {
	
					print "<td align='center'><input onclick='toggleSelectPrefRow(this, \"filter\");' 
					type=\"checkbox\" id=\"FICHK-".$line["id"]."\"></td>";
	
					print "<td><a href=\"javascript:editFilter($filter_id);\">" . 
						$line["reg_exp"] . "</td>";		
	
					print "<td><a href=\"javascript:editFilter($filter_id);\">" . 
						$line["feed_title"] . "</td>";			
	
					print "<td><a href=\"javascript:editFilter($filter_id);\">" . 
						$line["filter_type_descr"] . "</td>";		
		
					print "<td><a href=\"javascript:editFilter($filter_id);\">" . 
						$line["action_description"] . "</td>";			
	
				} else if ($filter_id != $edit_filter_id) {
	
					if (!$line["description"]) $line["description"] = "[No description]";
	
					print "<td align='center'><input disabled=\"true\" type=\"checkbox\" 
						id=\"FICHK-".$line["id"]."\"></td>";
	
					print "<td>".$line["reg_exp"]."</td>";		
					print "<td>".$line["feed_title"]."</td>";
					print "<td>".$line["filter_type_descr"]."</td>";
					print "<td>".$line["action_description"]."</td>";		

				} else {
	
					print "<td align='center'><input disabled=\"true\" type=\"checkbox\" checked></td>";
	
					print "<td><input id=\"iedit_regexp\" value=\"".$line["reg_exp"].
						"\"></td>";
	
					print "<td>";
					print "<select id=\"iedit_feed\">";
					print "<option id=\"0\">All feeds</option>";
	
					$tmp_result = db_query($link, "SELECT id,title FROM ttrss_feeds
						WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");

					if (db_num_rows($tmp_result) > 0) {
						print "<option disabled>--------</option>";
					}

					while ($tmp_line = db_fetch_assoc($tmp_result)) {
						if ($tmp_line["id"] == $line["feed_id"]) {
							$is_selected = "selected";
						} else {
							$is_selected = "";
						}
						printf("<option $is_selected id='%d'>%s</option>", 
							$tmp_line["id"], db_unescape_string($tmp_line["title"]));
					}
	
					print "</select></td>";
	
					print "<td>";
					print_select("iedit_match", $line["filter_type_descr"], $filter_types);
					print "</td>";

					print "<td>";
					print "<select id=\"iedit_filter_action\">";
	
					$tmp_result = db_query($link, "SELECT id,description FROM ttrss_filter_actions
						ORDER BY description");

					while ($tmp_line = db_fetch_assoc($tmp_result)) {
						if ($tmp_line["description"] == $line["action_description"]) {
							$is_selected = "selected";
						} else {
							$is_selected = "";
						}
						printf("<option $is_selected id='%d'>%s</option>", 
							$tmp_line["id"], $tmp_line["description"]);
					}
	
					print "</select></td>";

					print "</td>";
				}
				
				print "</tr>";
	
				++$lnum;
			}
	
			if ($lnum == 0) {
				print "<tr><td colspan=\"4\" align=\"center\">No filters defined.</td></tr>";
			}
	
			print "</table>";
	
			print "<p id=\"filterOpToolbar\">";
	
			if ($subop == "edit") {
				print "Edit filter:
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:filterEditSave()\" value=\"Save\">
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:filterEditCancel()\" value=\"Cancel\">";
						
			} else {
	
				print "
					Selection:
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:editSelectedFilter()\" value=\"Edit\">
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:removeSelectedFilters()\" value=\"Remove\">";
			}

		} else {

			print "<p>No filters defined.</p>";

		}
	}

	// We need to accept raw SQL data in label queries, so not everything is escaped
	// here, this is by design. If you don't like the whole idea, disable labels
	// altogether with GLOBAL_ENABLE_LABELS = false

	if ($op == "pref-labels") {

		if (!GLOBAL_ENABLE_LABELS) { 
			return; 
		}

		$subop = $_GET["subop"];

		if ($subop == "test") {

			$expr = $_GET["expr"];
			$descr = $_GET["descr"];

			print "<div id=\"infoBoxTitle\">Test label: $descr</div>";

			print "<div class='infoBoxContents'>";
		
#			print "<h1>Label &laquo;$descr&raquo;</h1>";

//			print "<p><b>Expression</b>: $expr</p>";

			$result = db_query($link, 
				"SELECT count(id) AS num_matches
					FROM ttrss_entries,ttrss_user_entries
					WHERE ($expr) AND 
						ttrss_user_entries.ref_id = ttrss_entries.id AND
						owner_uid = " . $_SESSION["uid"]);

			$num_matches = db_fetch_result($result, 0, "num_matches");;
			
			if ($num_matches > 0) { 

				print "<p>Query returned <b>$num_matches</b> matches, first 5 follow:</p>";

				$result = db_query($link, 
					"SELECT title, 
						(SELECT title FROM ttrss_feeds WHERE id = feed_id) AS feed_title
					FROM ttrss_entries,ttrss_user_entries
							WHERE ($expr) AND 
							ttrss_user_entries.ref_id = ttrss_entries.id
							AND owner_uid = " . $_SESSION["uid"] . " 
							ORDER BY date_entered DESC LIMIT 5");

				print "<ul class=\"nomarks\">";
				while ($line = db_fetch_assoc($result)) {
					print "<li>".$line["title"].
						" <span class=\"insensitive\">(".$line["feed_title"].")</span></li>";
				}
				print "</ul>";

			} else {
				print "<p>Query didn't return any matches.</p>";
			}

			print "</div>";

			print "<div align='center'>
				<input type='submit' class='button'			
				onclick=\"closeInfoBox()\" value=\"Close this window\"></div>";
			return;
		}

		if ($subop == "editSave") {

			$sql_exp = $_GET["s"];
			$descr = $_GET["d"];
			$label_id = db_escape_string($_GET["id"]);
			
//			print "$sql_exp : $descr : $label_id";
			
			$result = db_query($link, "UPDATE ttrss_labels SET 
				sql_exp = '$sql_exp', 
				description = '$descr'
				WHERE id = '$label_id'");
		}

		if ($subop == "remove") {

			if (!WEB_DEMO_MODE) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				foreach ($ids as $id) {
					db_query($link, "DELETE FROM ttrss_labels WHERE id = '$id'");
					
				}
			}
		}

		if ($subop == "add") {
		
			if (!WEB_DEMO_MODE) {

				// no escaping is done here on purpose
				$exp = trim($_GET["exp"]);
					
				$result = db_query($link,
					"INSERT INTO ttrss_labels (sql_exp,description,owner_uid) 
						VALUES ('$exp', '$exp', '".$_SESSION["uid"]."')");
			} 
		}

		print "<div class=\"prefGenericAddBox\">
			<input size=\"40\" 			
				onkeyup=\"toggleSubmitNotEmpty(this, 'label_create_btn')\"
				id=\"ladd_expr\">&nbsp;";
			
		print"<input type=\"submit\" class=\"button\" 
			disabled=\"true\" id=\"label_create_btn\"
			onclick=\"javascript:addLabel()\" value=\"Create label\"></div>";

		$result = db_query($link, "SELECT 
				id,sql_exp,description
			FROM 
				ttrss_labels 
			WHERE 
				owner_uid = ".$_SESSION["uid"]."
			ORDER by description");

		print "<div id=\"infoBoxShadow\"><div id=\"infoBox\">PLACEHOLDER</div></div>";

		if (db_num_rows($result) != 0) {

			print "<p><table width=\"100%\" cellspacing=\"0\" 
				class=\"prefLabelList\" id=\"prefLabelList\">";

			print "<tr><td class=\"selectPrompt\" colspan=\"8\">
				Select: 
					<a href=\"javascript:selectPrefRows('label', true)\">All</a>,
					<a href=\"javascript:selectPrefRows('label', false)\">None</a>
				</td</tr>";

			print "<tr class=\"title\">
						<td align='center' width=\"5%\">&nbsp;</td>
						<td width=\"40%\">SQL expression
						<a class=\"helpLink\" href=\"javascript:displayHelpInfobox(1)\">(?)</a>
						</td>
						<td width=\"40%\">Caption</td></tr>";
			
			$lnum = 0;
			
			while ($line = db_fetch_assoc($result)) {
	
				$class = ($lnum % 2) ? "even" : "odd";
	
				$label_id = $line["id"];
				$edit_label_id = $_GET["id"];
	
				if ($subop == "edit" && $label_id != $edit_label_id) {
					$class .= "Grayed";
					$this_row_id = "";
				} else {
					$this_row_id = "id=\"LILRR-$label_id\"";
				}
	
				print "<tr class=\"$class\" $this_row_id>";
	
				$line["sql_exp"] = htmlspecialchars($line["sql_exp"]);
				$line["description"] = htmlspecialchars($line["description"]);
	
				if (!$edit_label_id || $subop != "edit") {
	
					if (!$line["description"]) $line["description"] = "[No caption]";
	
					print "<td align='center'><input onclick='toggleSelectPrefRow(this, \"label\");' 
					type=\"checkbox\" id=\"LICHK-".$line["id"]."\"></td>";
	
					print "<td><a href=\"javascript:editLabel($label_id);\">" . 
						$line["sql_exp"] . "</td>";		
						
					print "<td><a href=\"javascript:editLabel($label_id);\">" . 
						$line["description"] . "</td>";			
	
				} else if ($label_id != $edit_label_id) {
	
					if (!$line["description"]) $line["description"] = "[No description]";
	
					print "<td><input disabled=\"true\" type=\"checkbox\" 
						id=\"LICHK-".$line["id"]."\"></td>";
	
					print "<td>".$line["sql_exp"]."</td>";		
					print "<td>".$line["description"]."</td>";		
	
				} else {
	
					print "<td><input disabled=\"true\" type=\"checkbox\" checked></td>";
	
					print "<td><input id=\"iedit_expr\" value=\"".$line["sql_exp"].
						"\"></td>";
	
					print "<td><input id=\"iedit_descr\" value=\"".$line["description"].
						"\"></td>";							
				}
					
				
				print "</tr>";
	
				++$lnum;
			}
	
			if ($lnum == 0) {
				print "<tr><td colspan=\"4\" align=\"center\">No labels defined.</td></tr>";
			}
	
			print "</table>";
	
			print "<p id=\"labelOpToolbar\">";
	
			if ($subop == "edit") {
				print "Edit label:
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:labelTest()\" value=\"Test\">
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:labelEditSave()\" value=\"Save\">
					<input type=\"submit\" class=\"button\" 
						onclick=\"javascript:labelEditCancel()\" value=\"Cancel\">";
						
			} else {	
				print "
					Selection:
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:editSelectedLabel()\" value=\"Edit\">
				<input type=\"submit\" class=\"button\" disabled=\"true\"
					onclick=\"javascript:removeSelectedLabels()\" value=\"Remove\">";
			}
		} else {
			print "<p>No labels defined.</p>";
		}
	}

	if ($op == "error") {
		print "<div width=\"100%\" align='center'>";
		$msg = $_GET["msg"];
		print $msg;
		print "</div>";
	}

	if ($op == "help") {
		if (!$_GET["noheaders"]) {
			print "<html><head>
				<title>Tiny Tiny RSS : Help</title>
				<link rel=\"stylesheet\" href=\"tt-rss.css\" type=\"text/css\">
				<script type=\"text/javascript\" src=\"functions.js?$script_dt_add\"></script>
				<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
				</head><body>";
		}

		$tid = sprintf("%d", $_GET["tid"]);

		print "<div id=\"infoBoxTitle\">Help</div>";

		print "<div class='infoBoxContents'>";

		if (file_exists("help/$tid.php")) {
			include("help/$tid.php");
		} else {
			print "<p>Help topic not found.</p>";
		}

		print "</div>";

		print "<div align='center'>
			<input type='submit' class='button'			
			onclick=\"closeInfoBox()\" value=\"Close this window\"></div>";

		if (!$_GET["noheaders"]) { 
			print "</body></html>";
		}

	}

	if ($op == "dlg") {
		$id = $_GET["id"];
		$param = $_GET["param"];

		if ($id == "quickAddFeed") {

			print "<div id=\"infoBoxTitle\">Subscribe to feed</div>";
			print "<div class=\"infoBoxContents\">";

			print "<table width='100%'>
			<tr><td>Feed URL:</td><td>
				<input onblur=\"javascript:enableHotkeys()\" 
					onkeyup=\"toggleSubmitNotEmpty(this, 'fadd_submit_btn')\"
					onfocus=\"javascript:disableHotkeys()\" id=\"qafInput\"></td></tr>";
		
			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				print "<tr><td>Category:</td><td>";
			
				$result = db_query($link, "SELECT title,id FROM ttrss_feed_categories
					WHERE owner_uid = ".$_SESSION["uid"]."
					ORDER BY title");

				print "<select id=\"qafCat\">";
				print "<option id=\"0\">Uncategorized</option>";

				if (db_num_rows($result) != 0) {
	
					print "<option disabled>--------</option>";

					while ($line = db_fetch_assoc($result)) {
						printf("<option id='%d'>%s</option>", 
							$line["id"], $line["title"]);
					}		
				}

				print "</select>";
				print "</td></tr>";
			}
			
			print "<tr><td colspan='2' align='right'>
				<input class=\"button\"
					id=\"fadd_submit_btn\" disabled=\"true\"
					type=\"submit\" onclick=\"javascript:qafAdd()\" value=\"Subscribe\">
				<input class=\"button\"
					type=\"submit\" onclick=\"javascript:closeInfoBox()\" 
					value=\"Cancel\"></td></tr></table>";
		}

		if ($id == "quickDelFeed") {

			$param = db_escape_string($param);

			$result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$param'");

			if ($result) {

				$f_title = db_fetch_result($result, 0, "title");
		
				print "Remove current feed (<b>$f_title</b>)?&nbsp;
				<input class=\"button\"
					type=\"submit\" onclick=\"javascript:qfdDelete($param)\" value=\"Remove\">
				<input class=\"button\"
					type=\"submit\" onclick=\"javascript:closeInfoBox()\" 
					value=\"Cancel\">";
			} else {
				print "Error: Feed $param not found.&nbsp;
				<input class=\"button\"
					type=\"submit\" onclick=\"javascript:closeInfoBox()\" 
					value=\"Cancel\">";		
			}
		}

		if ($id == "search") {

			print "<div id=\"infoBoxTitle\">Search</div>";
			print "<div class=\"infoBoxContents\">";

			$active_feed_id = db_escape_string($_GET["param"]);

			print "<table width='100%'><tr><td>Search:</td><td>";

			print "<input id=\"searchbox\" class=\"extSearch\"			
				onblur=\"javascript:enableHotkeys()\" 
				onfocus=\"javascript:disableHotkeys()\"
				onkeyup=\"toggleSubmitNotEmpty(this, 'search_submit_btn')\"
				onchange=\"javascript:search()\">				
			</td></tr><tr><td>Where:</td><td>
			<select id=\"searchmodebox\">
				<option selected>All feeds</option>";
				
			if ($active_feed_id) {				
				print "<option>This feed</option>";
			} else {
				print "<option disabled>This feed</option>";
			}

			if (get_pref($link, 'ENABLE_FEED_CATS')) {
				print "<option>This category</option>";
			}

			print "</select></td></tr>

			<tr><td colspan='2' align='right'>
			<input type=\"submit\" 
				class=\"button\" onclick=\"javascript:search()\" 
				id=\"search_submit_btn\" disabled=\"true\"
				value=\"Search\">
			<input class=\"button\"
				type=\"submit\" onclick=\"javascript:closeInfoBox()\" 
				value=\"Cancel\"></td></tr></table>";

		}

		if ($id == "quickAddFilter") {

			print "<div id=\"infoBoxTitle\">Create filter</div>";
			print "<div class=\"infoBoxContents\">";

			$result = db_query($link, "SELECT description 
				FROM ttrss_filter_types ORDER BY description");
	
			$filter_types = array();
	
			while ($line = db_fetch_assoc($result)) {
				array_push($filter_types, $line["description"]);
			}

			print "<table width='100%'>";

			print "<tr><td>Match:</td>
				<td><input onkeyup=\"toggleSubmitNotEmpty(this, 'infobox_submit')\"
				id=\"fadd_regexp\" size=\"30\">&nbsp;";
			
			print_select("fadd_match", "Title", $filter_types);	
	
			print "</td></tr>";
			print "<tr><td>Feed:</td><td><select id=\"fadd_feed\">";
	
			print "<option selected id=\"0\">All feeds</option>";
	
			$result = db_query($link, "SELECT id,title FROM ttrss_feeds
				WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
	
			if (db_num_rows($result) > 0) {
				print "<option disabled>--------</option>";
			}
	
			while ($line = db_fetch_assoc($result)) {
				if ($param == $line["id"]) {
					$selected = "selected";
				} else {
					$selected = "";
				}
				printf("<option id='%d' %s>%s</option>", $line["id"], $selected, $line["title"]);
			}
	
			print "</select></td></tr>";
	
			print "<tr><td>Action:</td>";
	
			print "<td><select id=\"fadd_action\">";
	
			$result = db_query($link, "SELECT id,description FROM ttrss_filter_actions 
				ORDER BY name");

			while ($line = db_fetch_assoc($result)) {
				printf("<option id='%d'>%s</option>", $line["id"], $line["description"]);
			}
	
			print "</select>";
	
			print "</td></tr><tr><td colspan=\"2\" align=\"right\">";
	
			print "<input type=\"submit\" 
				id=\"infobox_submit\"
				class=\"button\" onclick=\"javascript:qaddFilter()\" 
				disabled=\"true\" value=\"Create\"> ";

			print "<input class=\"button\"
				type=\"submit\" onclick=\"javascript:closeInfoBox()\" 
				value=\"Cancel\">";

			print "</td></tr></table>";

		}

		print "</div>";

	}

	// update feeds of all users, may be used anonymously
	if ($op == "globalUpdateFeeds") {

		$result = db_query($link, "SELECT id FROM ttrss_users");

		while ($line = db_fetch_assoc($result)) {
			$user_id = $line["id"];
//			print "<!-- updating feeds of uid $user_id -->";
			update_all_feeds($link, false, $user_id);
		}

		print "<rpc-reply>
			<message msg=\"All feeds updated\"/>
		</rpc-reply>";

	}

	if ($op == "pref-prefs") {

		$subop = $_REQUEST["subop"];

		if ($subop == "Save configuration") {

			if (WEB_DEMO_MODE) {
				header("Location: prefs.php");
				return;
			}

			$_SESSION["prefs_op_result"] = "save-config";

			$_SESSION["prefs_cache"] = false;

			foreach (array_keys($_POST) as $pref_name) {
			
				$pref_name = db_escape_string($pref_name);
				$value = db_escape_string($_POST[$pref_name]);

				$result = db_query($link, "SELECT type_name 
					FROM ttrss_prefs,ttrss_prefs_types 
					WHERE pref_name = '$pref_name' AND type_id = ttrss_prefs_types.id");

				if (db_num_rows($result) > 0) {

					$type_name = db_fetch_result($result, 0, "type_name");

//					print "$pref_name : $type_name : $value<br>";

					if ($type_name == "bool") {
						if ($value == "1") {
							$value = "true";
						} else {
							$value = "false";
						}
					} else if ($type_name == "integer") {
						$value = sprintf("%d", $value);
					}

//					print "$pref_name : $type_name : $value<br>";

					db_query($link, "UPDATE ttrss_user_prefs SET value = '$value' 
						WHERE pref_name = '$pref_name' AND owner_uid = ".$_SESSION["uid"]);

				}

				header("Location: prefs.php");

			}

		} else if ($subop == "getHelp") {

			$pref_name = db_escape_string($_GET["pn"]);

			$result = db_query($link, "SELECT help_text FROM ttrss_prefs
				WHERE pref_name = '$pref_name'");

			if (db_num_rows($result) > 0) {
				$help_text = db_fetch_result($result, 0, "help_text");
				print $help_text;
			} else {
				print "Unknown option: $pref_name";
			}

		} else if ($subop == "Change e-mail") {

			if (WEB_DEMO_MODE) {
				header("Location: prefs.php");
				return;
			}

			$email = db_escape_string($_GET["email"]);
			$active_uid = $_SESSION["uid"];

			if ($email) {
				db_query($link, "UPDATE ttrss_users SET email = '$email' 
						WHERE id = '$active_uid'");				
			}

			header("Location: prefs.php");

		} else if ($subop == "Change password") {

			if (WEB_DEMO_MODE) {
				header("Location: prefs.php");
				return;
			}

			$old_pw = $_POST["OLD_PASSWORD"];
			$new_pw = $_POST["OLD_PASSWORD"];

			$old_pw_hash = 'SHA1:' . sha1($_POST["OLD_PASSWORD"]);
			$new_pw_hash = 'SHA1:' . sha1($_POST["NEW_PASSWORD"]);

			$active_uid = $_SESSION["uid"];

			if ($old_pw && $new_pw) {

				$login = db_escape_string($_SERVER['PHP_AUTH_USER']);

				$result = db_query($link, "SELECT id FROM ttrss_users WHERE 
					id = '$active_uid' AND (pwd_hash = '$old_pw' OR 
						pwd_hash = '$old_pw_hash')");

				if (db_num_rows($result) == 1) {
					db_query($link, "UPDATE ttrss_users SET pwd_hash = '$new_pw_hash' 
						WHERE id = '$active_uid'");				

					$_SESSION["pwd_change_result"] = "ok";
				} else {
					$_SESSION["pwd_change_result"] = "failed";					
				}
			}

			header("Location: prefs.php");

		} else if ($subop == "Reset to defaults") {

			if (WEB_DEMO_MODE) {
				header("Location: prefs.php");
				return;
			}

			$_SESSION["prefs_op_result"] = "reset-to-defaults";

			if (DB_TYPE == "pgsql") {
				db_query($link,"UPDATE ttrss_user_prefs 
					SET value = ttrss_prefs.def_value 
					WHERE owner_uid = '".$_SESSION["uid"]."' AND
					ttrss_prefs.pref_name = ttrss_user_prefs.pref_name");
			} else {
				db_query($link, "DELETE FROM ttrss_user_prefs 
					WHERE owner_uid = ".$_SESSION["uid"]);
				initialize_user_prefs($link, $_SESSION["uid"]);
			}

			header("Location: prefs.php");

		} else if ($subop == "Change theme") {

			$theme = db_escape_string($_POST["theme"]);

			if ($theme == "Default") {
				$theme_qpart = 'NULL';
			} else {
				$theme_qpart = "'$theme'";
			}

			$result = db_query($link, "SELECT id,theme_path FROM ttrss_themes
				WHERE theme_name = '$theme'");

			if (db_num_rows($result) == 1) {
				$theme_id = db_fetch_result($result, 0, "id");
				$theme_path = db_fetch_result($result, 0, "theme_path");
			} else {
				$theme_id = "NULL";
				$theme_path = "";
			}

			db_query($link, "UPDATE ttrss_users SET
				theme_id = $theme_id WHERE id = " . $_SESSION["uid"]);

			$_SESSION["theme"] = $theme_path;

			header("Location: prefs.php");

		} else {

			if (!SINGLE_USER_MODE) {

				$result = db_query($link, "SELECT id,email FROM ttrss_users
					WHERE id = ".$_SESSION["uid"]." AND (pwd_hash = 'password' OR
						pwd_hash = 'SHA1:".sha1("password")."')");

				if (db_num_rows($result) != 0) {
					print "<div class=\"warning\"> 
						Your password is at default value, please change it.
					</div>";
				}

				if ($_SESSION["pwd_change_result"] == "failed") {
					print "<div class=\"warning\"> 
							There was an error while changing your password.
						</div>";
				}

				if ($_SESSION["pwd_change_result"] == "ok") {
					print "<div class=\"notice\"> 
							Password changed successfully.
						</div>";
				}

				$_SESSION["pwd_change_result"] = "";

				if ($_SESSION["prefs_op_result"] == "reset-to-defaults") {
					print "<div class=\"notice\"> 
							Your configuration was reset to defaults.
						</div>";
				}

				if ($_SESSION["prefs_op_result"] == "save-config") {
					print "<div class=\"notice\"> 
							Your configuration was saved successfully.
						</div>";
				}

				$_SESSION["prefs_op_result"] = "";

				print "<form action=\"backend.php\" method=\"GET\">";
	
				print "<table width=\"100%\" class=\"prefPrefsList\">";
	 			print "<tr><td colspan='3'><h3>Personal data</h3></tr></td>";

				$result = db_query($link, "SELECT email FROM ttrss_users
					WHERE id = ".$_SESSION["uid"]);
					
				$email = db_fetch_result($result, 0, "email");
	
				print "<tr><td width=\"40%\">E-mail</td>";
				print "<td><input class=\"editbox\" name=\"email\" 
					value=\"$email\"></td></tr>";
	
				print "</table>";
	
				print "<input type=\"hidden\" name=\"op\" value=\"pref-prefs\">";
	
				print "<p><input class=\"button\" type=\"submit\" 
					value=\"Change e-mail\" name=\"subop\">";

				print "</form>";

				print "<form action=\"backend.php\" method=\"POST\" name=\"changePassForm\">";
	
				print "<table width=\"100%\" class=\"prefPrefsList\">";
	 			print "<tr><td colspan='3'><h3>Authentication</h3></tr></td>";
	
				print "<tr><td width=\"40%\">Old password</td>";
				print "<td><input class=\"editbox\" type=\"password\"
					name=\"OLD_PASSWORD\"></td></tr>";
	
				print "<tr><td width=\"40%\">New password</td>";
				
				print "<td><input class=\"editbox\" type=\"password\"
					name=\"NEW_PASSWORD\"></td></tr>";
	
				print "</table>";
	
				print "<input type=\"hidden\" name=\"op\" value=\"pref-prefs\">";
	
				print "<p><input class=\"button\" type=\"submit\" 
					onclick=\"return validateNewPassword(this.form)\"
					value=\"Change password\" name=\"subop\">";
	
				print "</form>";

			}

			$result = db_query($link, "SELECT
				theme_id FROM ttrss_users WHERE id = " . $_SESSION["uid"]);

			$user_theme_id = db_fetch_result($result, 0, "theme_id");

			$result = db_query($link, "SELECT
				id,theme_name FROM ttrss_themes ORDER BY theme_name");

			if (db_num_rows($result) > 0) {

				print "<form action=\"backend.php\" method=\"POST\">";
				print "<table width=\"100%\" class=\"prefPrefsList\">";
	 			print "<tr><td colspan='3'><h3>Themes</h3></tr></td>";
				print "<tr><td width=\"40%\">Select theme</td>";
				print "<td><select name=\"theme\">";
				print "<option>Default</option>";
				print "<option disabled>--------</option>";				
				
				while ($line = db_fetch_assoc($result)) {	
					if ($line["id"] == $user_theme_id) {
						$selected = "selected";
					} else {
						$selected = "";
					}
					print "<option $selected>" . $line["theme_name"] . "</option>";
				}
				print "</select></td></tr>";
				print "</table>";
				print "<input type=\"hidden\" name=\"op\" value=\"pref-prefs\">";
				print "<p><input class=\"button\" type=\"submit\" 
					value=\"Change theme\" name=\"subop\">";
				print "</form>";
			}

			$result = db_query($link, "SELECT 
				ttrss_user_prefs.pref_name,short_desc,help_text,value,type_name,
				section_name,def_value
				FROM ttrss_prefs,ttrss_prefs_types,ttrss_prefs_sections,ttrss_user_prefs
				WHERE type_id = ttrss_prefs_types.id AND 
					section_id = ttrss_prefs_sections.id AND
					ttrss_user_prefs.pref_name = ttrss_prefs.pref_name AND
					owner_uid = ".$_SESSION["uid"]."
				ORDER BY section_id,short_desc");

			print "<form action=\"backend.php\" method=\"POST\">";

			$lnum = 0;

			$active_section = "";
	
			while ($line = db_fetch_assoc($result)) {

				if ($active_section != $line["section_name"]) {

					if ($active_section != "") {
						print "</table>";
					}

					print "<p><table width=\"100%\" class=\"prefPrefsList\">";
				
					$active_section = $line["section_name"];				
					
					print "<tr><td colspan=\"3\"><h3>$active_section</h3></td></tr>";
//					print "<tr class=\"title\">
//						<td width=\"25%\">Option</td><td>Value</td></tr>";

					$lnum = 0;
				}

//				$class = ($lnum % 2) ? "even" : "odd";

				print "<tr>";

				$type_name = $line["type_name"];
				$pref_name = $line["pref_name"];
				$value = $line["value"];
				$def_value = $line["def_value"];
				$help_text = $line["help_text"];

				print "<td width=\"40%\" id=\"$pref_name\">" . $line["short_desc"];

				if ($help_text) print "<div class=\"prefHelp\">$help_text</div>";
				
				print "</td>";

				print "<td>";

				if ($type_name == "bool") {
//					print_select($pref_name, $value, array("true", "false"));

					if ($value == "true") {
						$value = "Yes";
					} else {
						$value = "No";
					}

					print_radio($pref_name, $value, array("Yes", "No"));
			
				} else {
					print "<input class=\"editbox\" name=\"$pref_name\" value=\"$value\">";
				}

				print "</td>";

				print "</tr>";

				$lnum++;
			}

			print "</table>";

			print "<input type=\"hidden\" name=\"op\" value=\"pref-prefs\">";

			print "<p><input class=\"button\" type=\"submit\" 
				name=\"subop\" value=\"Save configuration\">";
				
			print "&nbsp;<input class=\"button\" type=\"submit\" 
				name=\"subop\" onclick=\"return validatePrefsReset()\" 
				value=\"Reset to defaults\"></p>";

			print "</form>";

		}

	}

	if ($op == "pref-users") {

		$subop = $_GET["subop"];

		if ($subop == "editSave") {
	
			if (!WEB_DEMO_MODE) {

				$login = db_escape_string($_GET["l"]);
				$uid = db_escape_string($_GET["id"]);
				$access_level = sprintf("%d", $_GET["al"]);
				$email = db_escape_string($_GET["e"]);

				db_query($link, "UPDATE ttrss_users SET login = '$login', 
					access_level = '$access_level', email = '$email' WHERE id = '$uid'");

			}
		} else if ($subop == "remove") {

			if (!WEB_DEMO_MODE && $_SESSION["access_level"] >= 10) {

				$ids = split(",", db_escape_string($_GET["ids"]));

				foreach ($ids as $id) {
					db_query($link, "DELETE FROM ttrss_users WHERE id = '$id' AND id != " . $_SESSION["uid"]);
					
				}
			}
		} else if ($subop == "add") {
		
			if (!WEB_DEMO_MODE && $_SESSION["access_level"] >= 10) {

				$login = db_escape_string(trim($_GET["login"]));
				$tmp_user_pwd = make_password(8);
				$pwd_hash = 'SHA1:' . sha1($tmp_user_pwd);

				$result = db_query($link, "SELECT id FROM ttrss_users WHERE 
					login = '$login'");

				if (db_num_rows($result) == 0) {

					db_query($link, "INSERT INTO ttrss_users 
						(login,pwd_hash,access_level,last_login)
						VALUES ('$login', '$pwd_hash', 0, NOW())");
	
	
					$result = db_query($link, "SELECT id FROM ttrss_users WHERE 
						login = '$login' AND pwd_hash = '$pwd_hash'");
	
					if (db_num_rows($result) == 1) {
	
						$new_uid = db_fetch_result($result, 0, "id");
	
						print "<div class=\"notice\">Added user <b>".$_GET["login"].
							"</b> with password <b>$tmp_user_pwd</b>.</div>";
	
						initialize_user($link, $new_uid);
	
					} else {
					
						print "<div class=\"warning\">Could not create user <b>".
							$_GET["login"]."</b></div>";
	
					}
				} else {
					print "<div class=\"warning\">User <b>".
						$_GET["login"]."</b> already exists.</div>";
				}
			} 
		} else if ($subop == "resetPass") {

			if (!WEB_DEMO_MODE && $_SESSION["access_level"] >= 10) {

				$uid = db_escape_string($_GET["id"]);

				$result = db_query($link, "SELECT login,email 
					FROM ttrss_users WHERE id = '$uid'");

				$login = db_fetch_result($result, 0, "login");
				$email = db_fetch_result($result, 0, "email");
				$tmp_user_pwd = make_password(8);
				$pwd_hash = 'SHA1:' . sha1($tmp_user_pwd);

				db_query($link, "UPDATE ttrss_users SET pwd_hash = '$pwd_hash'
					WHERE id = '$uid'");

				print "<div class=\"notice\">Changed password of 
					user <b>$login</b> to <b>$tmp_user_pwd</b>.";

				if (MAIL_RESET_PASS && $email) {
					print " Notifying <b>$email</b>.";

					mail("$login <$email>", "Password reset notification",
						"Hi, $login.\n".
						"\n".
						"Your password for this TT-RSS installation was reset by".
							" an administrator.\n".
						"\n".
						"Your new password is $tmp_user_pwd, please remember".
							" it for later reference.\n".
						"\n".
						"Sincerely, TT-RSS Mail Daemon.", "From: " . MAIL_FROM);
				}
					
				print "</div>";				

			}
		}

		print "<div class=\"prefGenericAddBox\">
			<input id=\"uadd_box\" 			
				onkeyup=\"toggleSubmitNotEmpty(this, 'user_add_btn')\"
				onchange=\"javascript:addUser()\" size=\"40\">&nbsp;";
			
		print"<input type=\"submit\" class=\"button\" 
			id=\"user_add_btn\" disabled=\"true\"
			onclick=\"javascript:addUser()\" value=\"Create user\"></div>";

		$result = db_query($link, "SELECT 
				id,login,access_level,email,
				SUBSTRING(last_login,1,16) as last_login
			FROM 
				ttrss_users
			ORDER by login");

		print "<div id=\"infoBoxShadow\"><div id=\"infoBox\">PLACEHOLDER</div></div>";

		print "<p><table width=\"100%\" cellspacing=\"0\" 
			class=\"prefUserList\" id=\"prefUserList\">";

		print "<tr><td class=\"selectPrompt\" colspan=\"8\">
				Select: 
					<a href=\"javascript:selectPrefRows('user', true)\">All</a>,
					<a href=\"javascript:selectPrefRows('user', false)\">None</a>
				</td</tr>";

		print "<tr class=\"title\">
					<td align='center' width=\"5%\">&nbsp;</td>
					<td width='20%'>Login</td>
					<td width='20%'>E-mail</td>
					<td width='20%'>Access Level</td>
					<td width='20%'>Last login</td></tr>";
		
		$lnum = 0;
		
		while ($line = db_fetch_assoc($result)) {

			$class = ($lnum % 2) ? "even" : "odd";

			$uid = $line["id"];
			$edit_uid = $_GET["id"];

			if ($subop == "edit" && $uid != $edit_uid) {
				$class .= "Grayed";
				$this_row_id = "";
			} else {
				$this_row_id = "id=\"UMRR-$uid\"";
			}		
			
			print "<tr class=\"$class\" $this_row_id>";

			$line["login"] = htmlspecialchars($line["login"]);

			$line["last_login"] = date(get_pref($link, 'SHORT_DATE_FORMAT'),
				strtotime($line["last_login"]));

			$access_level_names = array(0 => "User", 10 => "Administrator");

			if (!$edit_uid || $subop != "edit") {

				print "<td align='center'><input onclick='toggleSelectPrefRow(this, \"user\");' 
				type=\"checkbox\" id=\"UMCHK-$uid\"></td>";

				print "<td><a href=\"javascript:editUser($uid);\">" . 
					$line["login"] . "</td>";		

				if (!$line["email"]) $line["email"] = "&nbsp;";

				print "<td><a href=\"javascript:editUser($uid);\">" . 
					$line["email"] . "</td>";			

				print "<td><a href=\"javascript:editUser($uid);\">" . 
					$access_level_names[$line["access_level"]] . "</td>";			

			} else if ($uid != $edit_uid) {

				if (!$line["email"]) $line["email"] = "&nbsp;";

				print "<td align='center'><input disabled=\"true\" type=\"checkbox\" 
					id=\"UMCHK-".$line["id"]."\"></td>";

				print "<td>".$line["login"]."</td>";		
				print "<td>".$line["email"]."</td>";		
				print "<td>".$access_level_names[$line["access_level"]]."</td>";

			} else {

				print "<td align='center'>
					<input disabled=\"true\" type=\"checkbox\" checked></td>";

				print "<td><input id=\"iedit_ulogin\" value=\"".$line["login"].
					"\"></td>";

				print "<td><input id=\"iedit_email\" value=\"".$line["email"].
					"\"></td>";

				print "<td>";
				print "<select id=\"iedit_ulevel\">";
				foreach (array_keys($access_level_names) as $al) {
					if ($al == $line["access_level"]) {
						$selected = "selected";
					} else {
						$selected = "";
					}					
					print "<option $selected id=\"$al\">" . 
						$access_level_names[$al] . "</option>";
				}
				print "</select>";
				print "</td>";

			}
				
			print "<td>".$line["last_login"]."</td>";		
		
			print "</tr>";

			++$lnum;
		}

		print "</table>";

		print "<p id='userOpToolbar'>";

		if ($subop == "edit") {
			print "Edit user:
				<input type=\"submit\" class=\"button\" 
					onclick=\"javascript:userEditSave()\" value=\"Save\">
				<input type=\"submit\" class=\"button\" 
					onclick=\"javascript:userEditCancel()\" value=\"Cancel\">";
					
		} else {

			print "
				Selection:
			<input type=\"submit\" class=\"button\" disabled=\"true\"
				onclick=\"javascript:selectedUserDetails()\" value=\"User details\">
			<input type=\"submit\" class=\"button\" disabled=\"true\"
				onclick=\"javascript:editSelectedUser()\" value=\"Edit\">
			<input type=\"submit\" class=\"button\" disabled=\"true\"
				onclick=\"javascript:removeSelectedUsers()\" value=\"Remove\">
			<input type=\"submit\" class=\"button\" disabled=\"true\"
				onclick=\"javascript:resetSelectedUserPass()\" value=\"Reset password\">";

		}
	}

	if ($op == "user-details") {

		if (WEB_DEMO_MODE || $_SESSION["access_level"] < 10) {
			return;
		}
			  
/*		print "<html><head>
			<title>Tiny Tiny RSS : User Details</title>
			<link rel=\"stylesheet\" href=\"tt-rss.css\" type=\"text/css\">
			<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
			</head><body>"; */

		$uid = sprintf("%d", $_GET["id"]);

		print "<div id=\"infoBoxTitle\">User details</div>";

		print "<div class='infoBoxContents'>";

		$result = db_query($link, "SELECT login,
			SUBSTRING(last_login,1,16) AS last_login,
			access_level,
			(SELECT COUNT(int_id) FROM ttrss_user_entries 
				WHERE owner_uid = id) AS stored_articles
			FROM ttrss_users 
			WHERE id = '$uid'");
			
		if (db_num_rows($result) == 0) {
			print "<h1>User not found</h1>";
			return;
		}
		
#		print "<h1>User Details</h1>";

		$login = db_fetch_result($result, 0, "login");

		print "<h1>$login</h1>";

		print "<table width='100%'>";

		$last_login = date(get_pref($link, 'LONG_DATE_FORMAT'),
			strtotime(db_fetch_result($result, 0, "last_login")));
		$access_level = db_fetch_result($result, 0, "access_level");
		$stored_articles = db_fetch_result($result, 0, "stored_articles");

#		print "<tr><td>Username</td><td>$login</td></tr>";
		print "<tr><td>Access level</td><td>$access_level</td></tr>";
		print "<tr><td>Last logged in</td><td>$last_login</td></tr>";
		print "<tr><td>Stored articles</td><td>$stored_articles</td></tr>";

		$result = db_query($link, "SELECT COUNT(id) as num_feeds FROM ttrss_feeds
			WHERE owner_uid = '$uid'");

		$num_feeds = db_fetch_result($result, 0, "num_feeds");

		print "<tr><td>Subscribed feeds count</td><td>$num_feeds</td></tr>";

/*		$result = db_query($link, "SELECT 
			SUM(LENGTH(content)+LENGTH(title)+LENGTH(link)+LENGTH(guid)) AS db_size 
			FROM ttrss_user_entries,ttrss_entries 
				WHERE owner_uid = '$uid' AND ref_id = id");

		$db_size = round(db_fetch_result($result, 0, "db_size") / 1024);

		print "<tr><td>Approx. used DB size</td><td>$db_size KBytes</td></tr>";  */

		print "</table>";

		print "<h1>Subscribed feeds</h1>";

		$result = db_query($link, "SELECT id,title,site_url FROM ttrss_feeds
			WHERE owner_uid = '$uid' ORDER BY title");

		print "<ul class=\"userFeedList\">";

		$row_class = "odd";

		while ($line = db_fetch_assoc($result)) {

			$icon_file = ICONS_URL."/".$line["id"].".ico";

			if (file_exists($icon_file) && filesize($icon_file) > 0) {
				$feed_icon = "<img class=\"tinyFeedIcon\" src=\"$icon_file\">";
			} else {
				$feed_icon = "<img class=\"tinyFeedIcon\" src=\"images/blank_icon.gif\">";
			}

			print "<li class=\"$row_class\">$feed_icon&nbsp;<a href=\"".$line["site_url"]."\">".$line["title"]."</a></li>";

			$row_class = toggleEvenOdd($row_class);

		}

		if (db_num_rows($result) < $num_feeds) {
			 // FIXME - add link to show ALL subscribed feeds here somewhere
			print "<li><img 
				class=\"tinyFeedIcon\" src=\"images/blank_icon.gif\">&nbsp;...</li>";
		}
		
		print "</ul>";

		print "</div>";

		print "<div align='center'>
			<input type='submit' class='button'			
			onclick=\"closeInfoBox()\" value=\"Close this window\"></div>";

//		print "</body></html>"; 

	}

	if ($op == "feed-details") {

//		$feed_id = $_GET["id"];

		$feed_ids = split(",", db_escape_string($_GET["id"]));

		print "<div id=\"infoBoxTitle\">Feed details</div>";
		print "<div class=\"infoBoxContents\">";

		foreach ($feed_ids as $feed_id) {

			$result = db_query($link, 
				"SELECT 
					title,feed_url,
					SUBSTRING(last_updated,1,16) as last_updated,
					icon_url,site_url,
					(SELECT COUNT(int_id) FROM ttrss_user_entries 
						WHERE feed_id = id) AS total,
					(SELECT COUNT(int_id) FROM ttrss_user_entries 
						WHERE feed_id = id AND unread = true) AS unread,
					(SELECT COUNT(int_id) FROM ttrss_user_entries 
						WHERE feed_id = id AND marked = true) AS marked
				FROM ttrss_feeds
				WHERE id = '$feed_id' AND owner_uid = ".$_SESSION["uid"]);
	
			if (db_num_rows($result) == 0) return;
	
			$title = db_unescape_string(db_fetch_result($result, 0, "title"));
			$last_updated = date(get_pref($link, 'LONG_DATE_FORMAT'),
				strtotime(db_fetch_result($result, 0, "last_updated")));
			$feed_url = db_fetch_result($result, 0, "feed_url");
			$icon_url = db_fetch_result($result, 0, "icon_url");
			$total = db_fetch_result($result, 0, "total");
			$unread = db_fetch_result($result, 0, "unread");
			$marked = db_fetch_result($result, 0, "marked");
			$site_url = db_fetch_result($result, 0, "site_url");
	
			$result = db_query($link, "SELECT COUNT(id) AS subscribed
						FROM ttrss_feeds WHERE feed_url = '$feed_url' AND private = false");
	
			$subscribed = db_fetch_result($result, 0, "subscribed");
	
			$icon_file = ICONS_DIR . "/$feed_id.ico";
	
			if (file_exists($icon_file) && filesize($icon_file) > 0) {
					$feed_icon = "<img width=\"16\" height=\"16\"
						src=\"" . ICONS_URL . "/$feed_id.ico\">";
			} else {
				$feed_icon = "";
			}
	
			print "<h1>$feed_icon $title</h1>";
	
			print "<table width='100%'>";
	
			if ($site_url) {
				print "<tr><td width='30%'>Link</td>
					<td><a href=\"$site_url\">$site_url</a>
					<a href=\"$feed_url\">(feed)</a></td>
					</td></tr>";
			} else {
				print "<tr><td width='30%'>Feed URL</td>
					<td><a href=\"$feed_url\">$feed_url</a></td></tr>";
			}
			print "<tr><td>Last updated</td><td>$last_updated</td></tr>";
			print "<tr><td>Total articles</td><td>$total</td></tr>";
			print "<tr><td>Unread articles</td><td>$unread</td></tr>";
			print "<tr><td>Starred articles</td><td>$marked</td></tr>";
			print "<tr><td>Subscribed users</td><td>$subscribed</td></tr>";
	
			print "</table>";
	
/*			$result = db_query($link, "SELECT title,
				SUBSTRING(updated,1,16) AS updated,unread
				FROM ttrss_entries,ttrss_user_entries
				WHERE ref_id = id AND feed_id = '$feed_id' 
				ORDER BY date_entered DESC LIMIT 5");
	
			if (db_num_rows($result) > 0) {
	
				print "<h1>Latest headlines</h1>";
	
				print "<ul class=\"nomarks\">";
		
				while ($line = db_fetch_assoc($result)) {
					if ($line["unread"] == "t" || $line["unread"] == "1") {
						$line["title"] = "<b>" . $line["title"] . "</b>";
					}				
					print "<li>" . $line["title"].
					"&nbsp;<span class=\"insensitive\">(" .
						date(get_pref($link, 'SHORT_DATE_FORMAT'), 
							strtotime($line["updated"])).
					")</span></li>";
				}
		
				print "</ul>";
		
			} */
		}

		print "</div>";
	
		print "<div align='center'>
			<input type='submit' class='button'			
			onclick=\"closeInfoBox()\" value=\"Close this window\"></div>";
	}	

	if ($op == "pref-feed-browser") {

		if (!ENABLE_FEED_BROWSER) {
			print "Feed browser is administratively disabled.";
			return;
		}

		$subop = $_REQUEST["subop"];

		if ($subop == "details") {
			$id = db_escape_string($_GET["id"]);

			print "<div class=\"browserFeedInfo\">";
			print "<b>Feed information:</b>";
			print "<div class=\"detailsPart\">";

			$result = db_query($link, "SELECT 
					feed_url,site_url,
					SUBSTRING(last_updated,1,19) AS last_updated
				FROM ttrss_feeds WHERE id = '$id'");

			$feed_url = db_fetch_result($result, 0, "feed_url");
			$site_url = db_fetch_result($result, 0, "site_url");
			$last_updated = db_fetch_result($result, 0, "last_updated");

			if (get_pref($link, 'HEADLINES_SMART_DATE')) {
				$last_updated = smart_date_time(strtotime($last_updated));
			} else {
				$short_date = get_pref($link, 'SHORT_DATE_FORMAT');
				$last_updated = date($short_date, strtotime($last_updated));
			}

			print "Site: <a href='$site_url'>$site_url</a> ".
				"(<a href='$feed_url'>feed</a>), ".
				"Last updated: $last_updated";

			print "</div>";

			$result = db_query($link, "SELECT 
					ttrss_entries.title,
					content,
					substring(date_entered,1,19) as date_entered,
					substring(updated,1,19) as updated
				FROM ttrss_entries,ttrss_user_entries
				WHERE	ttrss_entries.id = ref_id AND feed_id = '$id' 
				ORDER BY updated DESC LIMIT 5");

			if (db_num_rows($result) > 0) {
				
				print "<b>Last headlines:</b><br>";
				
				print "<div class=\"detailsPart\">";
				print "<ul class=\"compact\">";
				while ($line = db_fetch_assoc($result)) {

					if (get_pref($link, 'HEADLINES_SMART_DATE')) {
						$entry_dt = smart_date_time(strtotime($line["updated"]));
					} else {
						$short_date = get_pref($link, 'SHORT_DATE_FORMAT');
						$entry_dt = date($short_date, strtotime($line["updated"]));
					}				
		
					print "<li>" . $line["title"] . 
						"&nbsp;<span class=\"insensitive\">($entry_dt)</span></li>";	
				}		
				print "</ul></div>";
			}

			print "</div>";
				
			return;
		}

		print "<p>This panel shows feeds subscribed by other users of this system, just in case you are interested in some of them too.</p>";

		$limit = db_escape_string($_GET["limit"]);

		if (!$limit) $limit = 25;

		$result = db_query($link, "SELECT feed_url,count(id) AS subscribers 
			FROM ttrss_feeds 
			WHERE auth_login = '' AND auth_pass = '' AND private = false
			GROUP BY feed_url ORDER BY subscribers DESC LIMIT $limit");

		print "<div style=\"float : right\">
			Top <select id=\"feedBrowserLimit\">";

		foreach (array(25, 50, 100) as $l) {
			$issel = ($l == $limit) ? "selected" : "";
			print "<option $issel>$l</option>";
		}
			
		print "</select>
			<input type=\"submit\" class=\"button\"
				onclick=\"updateBigFeedBrowser()\" value=\"Show\">
		</div>";

		print "<p>Selection: 
			<input type='submit' class='button' onclick=\"feedBrowserSubscribe()\" 
			value=\"Subscribe\">";

		print "<ul class='nomarks' id='browseBigFeedList'>";

		$feedctr = 0;
		
		while ($line = db_fetch_assoc($result)) {
			$feed_url = $line["feed_url"];
			$subscribers = $line["subscribers"];

			$sub_result = db_query($link, "SELECT id
				FROM ttrss_feeds WHERE feed_url = '$feed_url' AND owner_uid =" . 
				$_SESSION["uid"]);

			if (db_num_rows($sub_result) > 0) {
				continue; // already subscribed
			}
		
			$det_result = db_query($link, "SELECT site_url,title,id 
				FROM ttrss_feeds WHERE feed_url = '$feed_url' LIMIT 1");

			$details = db_fetch_assoc($det_result);
		
			$icon_file = ICONS_DIR . "/" . $details["id"] . ".ico";

			if (file_exists($icon_file) && filesize($icon_file) > 0) {
					$feed_icon = "<img class=\"tinyFeedIcon\"	src=\"" . ICONS_URL . 
						"/".$details["id"].".ico\">";
			} else {
				$feed_icon = "<img class=\"tinyFeedIcon\" src=\"images/blank_icon.gif\">";
			}

			$check_box = "<input onclick='toggleSelectListRow(this)' class='feedBrowseCB' 
				type=\"checkbox\" id=\"FBCHK-" . $details["id"] . "\">";

			$class = ($feedctr % 2) ? "even" : "odd";

			print "<li class='$class' id=\"FBROW-".$details["id"]."\">$check_box".
				"$feed_icon ";
				
			print "<a href=\"javascript:browserToggleExpand('".$details["id"]."')\">" . 
				$details["title"] ."</a>&nbsp;" .
				"<span class='subscribers'>($subscribers)</span>";
			
			print "<div class=\"browserDetails\" id=\"BRDET-" . $details["id"] . "\">";
			print "</div>";
				
			print "</li>";

				++$feedctr;
		}

		if ($feedctr == 0) {
			print "<li>No feeds found to subscribe.</li>";
		}

		print "</ul>";

		print "</div>";

	}

	function check_configuration_variables() {
		if (!defined('SESSION_EXPIRE_TIME')) {
			return "config: SESSION_EXPIRE_TIME is undefined";
		}

		if (SESSION_EXPIRE_TIME < 60) {
			return "config: SESSION_EXPIRE_TIME is too low (less than 60)";
		}

		if (SESSION_EXPIRE_TIME < SESSION_COOKIE_LIFETIME_REMEMBER) {
			return "config: SESSION_EXPIRE_TIME should be greater or equal to" .
				"SESSION_COOKIE_LIFETIME_REMEMBER";
		}

		if (defined('DISABLE_SESSIONS')) {
			return "config: you have enabled DISABLE_SESSIONS. Please disable this option.";
		}

		if (DATABASE_BACKED_SESSIONS && SINGLE_USER_MODE) {
			return "config: DATABASE_BACKED_SESSIONS is incompatible with SINGLE_USER_MODE";
		}

		return false;
	}

	db_close($link);
?>

<!-- <?= sprintf("Backend execution time: %.4f seconds", getmicrotime() - $script_started) ?> -->