<?php
// PukiWiki - Yet another WikiWikiWeb clone
-// $Id: showrss.inc.php,v 1.18 2006/05/02 01:28:01 henoheno Exp $
-// Id:showrss.inc.php,v 1.40 2003/03/18 11:52:58 hiro Exp
-// Copyright (C):
-// 2002-2005 PukiWiki Developers Team
+// showrss.inc.php
+// Copyright:
+// 2002-2017 PukiWiki Development Team
// 2002 PANDA <panda@arino.jp>
// (Original)hiro_do3ob@yahoo.co.jp
// License: GPL, same as PukiWiki
//
// Show RSS (of remote site) plugin
-// NOTE: This plugin needs 'PHP xml extension'
+// NOTE:
+// * This plugin needs 'PHP xml extension'
+// * Cache data will be stored as CACHE_DIR/*.tmp
-// Show this plugin is enable or not for this PukiWiki
+define('PLUGIN_SHOWRSS_USAGE', '#showrss(URI-to-RSS[,default|menubar|recent[,Cache-lifetime[,Show-timestamp]]])');
+
+// Show related extensions are found or not
function plugin_showrss_action()
{
- $xml_extension = extension_loaded('xml');
- $mbstring_extension = extension_loaded('mbstring');
-
- $xml_msg = $xml_extension ? 'xml extension is loaded' : 'COLOR(RED){xml extension is not loaded}';
- $mbstring_msg = $mbstring_extension ? 'mbstring extension is loaded' : 'COLOR(RED){mbstring extension is not loaded}';
- $showrss_info =
- '| xml parser | ' . $xml_msg . ' |' . "\n" .
- '| multibyte | ' . $mbstring_msg . ' |' . "\n";
-
- return array('msg' => 'showrss_info', 'body' => convert_html($showrss_info));
+ if (PKWK_SAFE_MODE) die_message('PKWK_SAFE_MODE prohibit this');
+
+ $body = '';
+ foreach(array('xml', 'mbstring') as $extension){
+ $$extension = extension_loaded($extension) ?
+ '&color(green){Found};' :
+ '&color(red){Not found};';
+ $body .= '| ' . $extension . ' extension | ' . $$extension . ' |' . "\n";
+ }
+ return array('msg' => 'showrss_info', 'body' => convert_html($body));
}
function plugin_showrss_convert()
{
- if (func_num_args() == 0) {
- return '<p>showrss: no parameter(s).</p>' . "\n";
- } else if (! extension_loaded('xml')) {
- return '<p>showrss: xml extension is not loaded</p>' . "\n";
+ static $_xml;
+
+ if (! isset($_xml)) $_xml = extension_loaded('xml');
+ if (! $_xml) return '#showrss: xml extension is not found<br />' . "\n";
+
+ $num = func_num_args();
+ if ($num == 0) return PLUGIN_SHOWRSS_USAGE . '<br />' . "\n";
+
+ $argv = func_get_args();
+ $timestamp = FALSE;
+ $cachehour = 0;
+ $template = $uri = '';
+ switch ($num) {
+ case 4: $timestamp = (trim($argv[3]) == '1'); /*FALLTHROUGH*/
+ case 3: $cachehour = trim($argv[2]); /*FALLTHROUGH*/
+ case 2: $template = strtolower(trim($argv[1]));/*FALLTHROUGH*/
+ case 1: $uri = trim($argv[0]);
}
- $array = func_get_args();
- $rssurl = $tmplname = $usecache = $usetimestamp = '';
-
- switch (func_num_args()) {
- case 4: $usetimestamp = trim($array[3]);
- case 3: $usecache = $array[2];
- case 2: $tmplname = strtolower(trim($array[1]));
- case 1: $rssurl = trim($array[0]);
+ $class = ($template == '' || $template == 'default') ? 'ShowRSS_html' : 'ShowRSS_html_' . $template;
+ if (! is_numeric($cachehour))
+ return '#showrss: Cache-lifetime seems not numeric: ' . htmlsc($cachehour) . '<br />' . "\n";
+ if (! class_exists($class))
+ return '#showrss: Template not found: ' . htmlsc($template) . '<br />' . "\n";
+ if (! is_url($uri))
+ return '#showrss: Seems not URI: ' . htmlsc($uri) . '<br />' . "\n";
+
+ // Remove old caches in 5% rate
+ if (mt_rand(1, 20) === 1) {
+ plugin_showrss_cache_expire(24);
+ }
+ list($rss, $time) = plugin_showrss_get_rss($uri, $cachehour);
+ if ($rss === FALSE) return '#showrss: Failed fetching RSS from the server<br />' . "\n";
+ if (! is_array($rss)) {
+ // Show XML error message
+ return '#showrss: Error - ' . htmlsc($rss) . '<br />' . "\n";
+ }
+ $time_display = '';
+ if ($timestamp > 0) {
+ $time_display = '<p style="font-size:10px; font-weight:bold">Last-Modified:' .
+ get_date('Y/m/d H:i:s', $time) . '</p>';
}
-
- if (! is_url($rssurl))
- return '<p>showrss: syntax error. ' . htmlspecialchars($rssurl) . '</p>' . "\n";
-
- $class = 'ShowRSS_html_' . $tmplname;
- if (! class_exists($class)) $class = 'ShowRSS_html';
-
- list($rss, $time) = plugin_showrss_get_rss($rssurl, $usecache);
- if ($rss === FALSE)
- return '<p>showrss: cannot get rss from server.</p>' . "\n";
$obj = new $class($rss);
-
- $timestamp = '';
- if ($usetimestamp > 0) {
- $time = get_date('Y/m/d H:i:s',$time);
- $timestamp = '<p style="font-size:10px; font-weight:bold">Last-Modified:' . $time . '</p>';
- }
- return $obj->toString($timestamp);
+ return $obj->toString($time_display);
}
// Create HTML from RSS array()
function ShowRSS_html($rss)
{
+ $this->__construct($rss);
+ }
+ function __construct($rss)
+ {
foreach ($rss as $date=>$items) {
foreach ($items as $item) {
$link = $item['LINK'];
}
}
-// Get RSS
-function plugin_showrss_get_rss($target, $usecache)
+// Get and save RSS
+function plugin_showrss_get_rss($target, $cachehour)
{
- $buf = '';
+ $buf = '';
$time = NULL;
- if ($usecache) {
+ if ($cachehour) {
+ $filename = CACHE_DIR . encode($target) . '.tmp';
// Remove expired cache
- plugin_showrss_cache_expire($usecache);
-
+ plugin_showrss_cache_expire_file($filename, $cachehour);
// Get the cache not expired
- $filename = CACHE_DIR . encode($target) . '.tmp';
if (is_readable($filename)) {
$buf = join('', file($filename));
$time = filemtime($filename) - LOCALZONE;
}
}
- if ($time === NULL) {
+ if (is_null($time)) {
// Newly get RSS
- $data = http_request($target);
- if ($data['rc'] !== 200)
+ $data = pkwk_http_request($target);
+ if ($data['rc'] !== 200) {
return array(FALSE, 0);
-
+ }
$buf = $data['data'];
$time = UTIME;
// Save RSS into cache
- if ($usecache) {
+ if ($cachehour) {
$fp = fopen($filename, 'w');
fwrite($fp, $buf);
fclose($fp);
}
}
-
// Parse
$obj = new ShowRSS_XML();
+ $obj->modified_date = (is_null($time) ? UTIME : $time);
return array($obj->parse($buf),$time);
}
// Remove cache if expired limit exeed
-function plugin_showrss_cache_expire($usecache)
+function plugin_showrss_cache_expire($cachehour)
{
- $expire = $usecache * 60 * 60; // Hour
+ $expire = $cachehour * 60 * 60; // Hour
$dh = dir(CACHE_DIR);
while (($file = $dh->read()) !== FALSE) {
if (substr($file, -4) != '.tmp') continue;
$dh->close();
}
+/**
+ * Remove single file cache if expired limit exeed
+ * @param $filename
+ * @param $cachehour
+ */
+function plugin_showrss_cache_expire_file($filename, $cachehour)
+{
+ $expire = $cachehour * 60 * 60; // Hour
+ $last = time() - filemtime($filename);
+ if ($last > $expire) {
+ unlink($filename);
+ }
+}
+
// Get RSS and array() them
class ShowRSS_XML
{
var $is_item;
var $tag;
var $encoding;
+ var $modified_date;
function parse($buf)
{
$this->item = array();
$this->is_item = FALSE;
$this->tag = '';
-
+ $utf8 = 'UTF-8';
+ $this->encoding = $utf8;
// Detect encoding
- $this->encoding = mb_detect_encoding($buf);
- if (! in_array(strtolower($this->encoding), array('us-ascii', 'iso-8859-1', 'utf-8'))) {
- $buf = mb_convert_encoding($buf, 'utf-8', $this->encoding);
- $this->encoding = 'utf-8';
+ $matches = array();
+ if(preg_match('/<\?xml [^>]*\bencoding="([a-z0-9-_]+)"/i', $buf, $matches)) {
+ $encoding = $matches[1];
+ if (strtoupper($encoding) !== $utf8) {
+ // xml_parse() fails on non UTF-8 encoding attr in XML decLaration
+ $buf = preg_replace('/<\?xml ([^>]*)\bencoding="[a-z0-9-_]+"/i', '<?xml $1', $buf);
+ // xml_parse() requires UTF-8 compatible encoding
+ $buf = mb_convert_encoding($buf, $utf8, $encoding);
+ }
}
- $xml_parser = xml_parser_create($this->encoding);
+ // Parsing
+ $xml_parser = xml_parser_create($utf8);
xml_set_element_handler($xml_parser, array(& $this, 'start_element'), array(& $this, 'end_element'));
xml_set_character_data_handler($xml_parser, array(& $this, 'character_data'));
-
if (! xml_parse($xml_parser, $buf, 1)) {
- return(sprintf('XML error: %s at line %d in %s',
+ return sprintf('XML error: %s at line %d in %s',
xml_error_string(xml_get_error_code($xml_parser)),
- xml_get_current_line_number($xml_parser), $buf));
+ xml_get_current_line_number($xml_parser),
+ (strlen($buf) < 500 ? $buf : substr($buf, 0, 500) . '...'));
}
xml_parser_free($xml_parser);
-
return $this->items;
}
function escape($str)
{
- // Unescape already-escaped chars (<, >, &, ...) in RSS body before htmlspecialchars()
+ // Unescape already-escaped chars (<, >, &, ...) in RSS body before htmlsc()
$str = strtr($str, array_flip(get_html_translation_table(ENT_COMPAT)));
// Escape
- $str = htmlspecialchars($str);
+ $str = htmlsc($str);
// Encoding conversion
$str = mb_convert_encoding($str, SOURCE_ENCODING, $this->encoding);
return trim($str);
$this->item = array();
if (isset($item['DC:DATE'])) {
- $time = plugin_showrss_get_timestamp($item['DC:DATE']);
+ $time = plugin_showrss_get_timestamp($item['DC:DATE'], $this->modified_date);
} else if (isset($item['PUBDATE'])) {
- $time = plugin_showrss_get_timestamp($item['PUBDATE']);
-
- } else if (isset($item['DESCRIPTION']) &&
- ($description = trim($item['DESCRIPTION'])) != '' &&
- ($time = strtotime($description)) != -1) {
- $time -= LOCALZONE;
-
+ $time = plugin_showrss_get_timestamp($item['PUBDATE'], $this->modified_date);
} else {
- $time = time() - LOCALZONE;
+ $time_from_desc = FALSE;
+ if (isset($item['DESCRIPTION']) &&
+ (($description = trim($item['DESCRIPTION'])) != '')) {
+ $time_from_desc = strtotime($description);
+ }
+ if ($time_from_desc !== FALSE && $time_from_desc !== -1) {
+ $time = $time_from_desc - LOCALZONE;
+ } else {
+ $time = time() - LOCALZONE;
+ }
}
$item['_TIMESTAMP'] = $time;
$date = get_date('Y-m-d', $item['_TIMESTAMP']);
}
}
-function plugin_showrss_get_timestamp($str)
+function plugin_showrss_get_timestamp($str, $default_date)
{
- if (($str = trim($str)) == '')
- return UTIME;
+ $str = trim($str);
+ if ($str == '') return UTIME;
$matches = array();
- if (! preg_match('/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})(([+-])(\d{2}):(\d{2}))?/', $str, $matches)) {
+ if (preg_match('/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})(([+-])(\d{2}):(\d{2}))?/', $str, $matches)) {
+ $time = strtotime($matches[1] . ' ' . $matches[2]);
+ if ($time === FALSE || $time === -1) {
+ $time = $default_date;
+ } else if (isset($matches[3])) {
+ $diff = ($matches[5] * 60 + $matches[6]) * 60;
+ $time += ($matches[4] == '-' ? $diff : -$diff);
+ }
+ return $time;
+ } else {
$time = strtotime($str);
- return ($time == -1) ? UTIME : $time - LOCALZONE;
- }
- $str = $matches[1];
- $time = strtotime($matches[1] . ' ' . $matches[2]);
- if (! empty($matches[3])) {
- $diff = ($matches[5] * 60 + $matches[6]) * 60;
- $time += ($matches[4] == '-' ? $diff : -$diff);
+ return ($time === FALSE || $time === -1) ? $default_date : $time - LOCALZONE;
}
- return $time;
}
-?>
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