function atom()
{
global $thisarticle;
extract($GLOBALS['prefs']);
define("t_texthtml", ' type="text/html"');
define("t_text", ' type="text"');
define("t_html", ' type="html"');
define("t_xhtml", ' type="xhtml"');
define('t_appxhtml', ' type="xhtml"');
define("r_relalt", ' rel="alternate"');
define("r_relself", ' rel="self"');
$area = doSlash(gps('area'));
extract(doSlash(gpsa(array('category', 'section', 'limit'))));
$last = fetch('unix_timestamp(val)', 'txp_prefs', 'name', 'lastmod');
$sitename .= $section ? ' - ' . $section : '';
$sitename .= $category ? ' - ' . $category : '';
$pub = safe_row("RealName, email", "txp_users", "privs=1");
$out[] = tag($sitename, 'title', t_text);
$out[] = tag($site_slogan, 'subtitle', t_text);
$out[] = '<link' . r_relself . ' href="' . pagelinkurl(array('atom' => 1)) . '" />';
$out[] = '<link' . r_relalt . t_texthtml . ' href="' . hu . '" />';
$articles = array();
//Atom feeds with mail or domain name
$dn = explode('/', $siteurl);
$mail_or_domain = $use_mail_on_feeds_id ? eE($blog_mail_uid) : $dn[0];
$out[] = tag('tag:' . $mail_or_domain . ',' . $blog_time_uid . ':' . $blog_uid . ($section ? '/' . $section : '') . ($category ? '/' . $category : ''), 'id');
$out[] = tag('Textpattern', 'generator', ' uri="http://textpattern.com/" version="' . $version . '"');
$out[] = tag(gmdate("Y-m-d\\TH:i:s\\Z", $last), 'updated');
$auth[] = tag($pub['RealName'], 'name');
$auth[] = $include_email_atom ? tag(eE($pub['email']), 'email') : '';
$auth[] = tag(hu, 'uri');
$out[] = tag(n . t . t . join(n . t . t, $auth) . n, 'author');
if (!$area or $area == 'article') {
$sfilter = $section ? "and Section = '" . $section . "'" : '';
$cfilter = $category ? "and (Category1='" . $category . "' or Category2='" . $category . "')" : '';
$limit = $limit ? $limit : $rss_how_many;
$limit = min($limit, max(100, $rss_how_many));
$frs = safe_column("name", "txp_section", "in_rss != '1'");
$query = array();
foreach ($frs as $f) {
$query[] = "and Section != '" . doSlash($f) . "'";
}
$query[] = $sfilter;
$query[] = $cfilter;
$rs = safe_rows_start("*, \n\t\t\t\tID as thisid, \n\t\t\t\tunix_timestamp(Posted) as uPosted,\n\t\t\t\tunix_timestamp(LastMod) as uLastMod", "textpattern", "Status=4 and Posted <= now() " . join(' ', $query) . "order by Posted desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
populateArticleData($a);
$e = array();
$a['posted'] = $uPosted;
if ($show_comment_count_in_feed) {
$count = $comments_count > 0 ? ' [' . $comments_count . ']' : '';
} else {
$count = '';
}
$thisauthor = get_author_name($AuthorID);
$e['thisauthor'] = tag(n . t . t . t . tag(htmlspecialchars($thisauthor), 'name') . n . t . t, 'author');
$e['issued'] = tag(gmdate('Y-m-d\\TH:i:s\\Z', $uPosted), 'published');
$e['modified'] = tag(gmdate('Y-m-d\\TH:i:s\\Z', $uLastMod), 'updated');
$escaped_title = safe_hed($Title);
$escaped_title = preg_replace("/&(?![#a-z0-9]+;)/i", '&', $escaped_title);
$escaped_title = str_replace('<', '<', $escaped_title);
$escaped_title = str_replace('>', '>', $escaped_title);
$e['title'] = tag($escaped_title . $count, 'title');
$uTitle = $url_title ? $url_title : stripSpace($Title);
$uTitle = htmlspecialchars($uTitle, ENT_NOQUOTES);
$permlink = permlinkurl($a);
$e['link'] = '<link' . r_relalt . t_texthtml . ' href="' . $permlink . '" />';
$e['id'] = tag('tag:' . $mail_or_domain . ',' . $feed_time . ':' . $blog_uid . '/' . $uid, 'id');
$e['category1'] = trim($Category1) ? '<category term="' . htmlspecialchars($Category1) . '" />' : '';
$e['category2'] = trim($Category2) ? '<category term="' . htmlspecialchars($Category2) . '" />' : '';
$Excerpt = fixup_for_feed($thisarticle['excerpt'], permlinkurl($a));
if ($syndicate_body_or_excerpt == 0) {
$Body = fixup_for_feed($thisarticle['body'], permlinkurl($a));
} else {
$Body = '';
// If there's no excerpt, use body as content instead of body as summary
if (!trim($Excerpt)) {
$Body = fixup_for_feed($thisarticle['body'], permlinkurl($a));
}
}
if (trim($Body)) {
$e['content'] = tag(n . $Body . n, 'content', t_html);
}
if (trim($Excerpt)) {
$e['summary'] = tag(n . $Excerpt . n, 'summary', t_html);
}
$articles[$ID] = tag(n . t . t . join(n . t . t, $e) . n, 'entry');
$etags[$ID] = strtoupper(dechex(crc32($articles[$ID])));
$dates[$ID] = $uLastMod;
}
}
} elseif ($area == 'link') {
$cfilter = $category ? "category='" . $category . "'" : '1';
$limit = $limit ? $limit : $rss_how_many;
$limit = min($limit, max(100, $rss_how_many));
$rs = safe_rows_start("*", "txp_link", "{$cfilter} order by date desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
$e['title'] = tag(doSpecial($linkname), 'title');
$content = utf8_encode(htmlspecialchars($description));
$e['content'] = tag(n . $description . n, 'content', t_texthtml);
$url = preg_replace("/^\\/(.*)/", "http://{$siteurl}/\$1", $url);
$url = preg_replace("/&((?U).*)=/", "&\\1=", $url);
$e['link'] = '<link' . r_relalt . t_texthtml . ' href="' . $url . '" />';
$e['issued'] = tag(gmdate('Y-m-d\\TH:i:s\\Z', strtotime($date)), 'published');
$e['modified'] = tag(gmdate('Y-m-d\\TH:i:s\\Z', strtotime($date)), 'updated');
$e['id'] = tag('tag:' . $mail_or_domain . ',' . $feed_time . ':' . $id, 'id');
$articles[$id] = tag(n . t . t . join(n . t . t, $e) . n, 'entry');
$etags[$id] = strtoupper(dechex(crc32($articles[$id])));
$dates[$id] = $date;
}
}
}
if (!empty($articles)) {
//turn on compression if we aren't using it already
if (extension_loaded('zlib') && ini_get("zlib.output_compression") == 0 && ini_get('output_handler') != 'ob_gzhandler' && !headers_sent()) {
@ob_start("ob_gzhandler");
}
$expires = gmdate('D, d M Y H:i:s \\G\\M\\T', time() + 3600 * 1);
header("Expires: {$expires}");
$hims = serverset('HTTP_IF_MODIFIED_SINCE');
$imsd = $hims ? strtotime($hims) : 0;
if ($imsd >= $last) {
txp_status_header("304 Not Modified");
exit;
}
header("Last-Modified: " . gmdate('D, d M Y H:i:s \\G\\M\\T', $last));
if (is_callable('apache_request_headers')) {
$headers = apache_request_headers();
if (isset($headers["A-IM"])) {
$canaim = strpos($headers["A-IM"], "feed");
} else {
$canaim = false;
}
} else {
$canaim = false;
}
$hinm = stripslashes(serverset('HTTP_IF_NONE_MATCH'));
$cutarticles = false;
if ($canaim !== false) {
foreach ($articles as $id => $thing) {
if (strpos($hinm, $etags[$id])) {
unset($articles[$id]);
$cutarticles = true;
$cut_etag = true;
}
if ($dates[$id] < $imsd) {
unset($articles[$id]);
$cutarticles = true;
$cut_time = true;
}
}
}
if (isset($cut_etag) && isset($cut_time)) {
header("Vary: If-None-Match, If-Modified-Since");
} else {
if (isset($cut_etag)) {
header("Vary: If-None-Match");
} else {
if (isset($cut_time)) {
header("Vary: If-Modified-Since");
}
}
}
$etag = @join("-", $etags);
if (strstr($hinm, $etag)) {
header("HTTP/1.1 304 Not Modified");
exit;
}
if ($etag) {
header('ETag: "' . $etag . '"');
}
if ($cutarticles) {
//header("HTTP/1.1 226 IM Used");
//This should be used as opposed to 200, but Apache doesn't like it.
//http://intertwingly.net/blog/2004/09/11/Vary-ETag/ says that the status code should be 200.
header("Cache-Control: no-store, im");
header("IM: feed");
}
$out = array_merge($out, $articles);
header('Content-type: application/atom+xml; charset=utf-8');
return chr(60) . '?xml version="1.0" encoding="UTF-8"?' . chr(62) . n . '<feed xml:lang="' . $language . '" xmlns="http://www.w3.org/2005/Atom">' . join(n, $out) . '</feed>';
}
}
function rss()
{
global $prefs, $thisarticle;
extract($prefs);
ob_start();
extract(doSlash(gpsa(array('category', 'section', 'limit', 'area'))));
$area = gps('area');
$sitename .= $section ? ' - ' . $section : '';
$sitename .= $category ? ' - ' . $category : '';
$out[] = tag(doSpecial($sitename), 'title');
$out[] = tag(hu, 'link');
$out[] = tag(doSpecial($site_slogan), 'description');
$articles = array();
if (!$area or $area == 'article') {
$sfilter = $section ? "and Section = '" . $section . "'" : '';
$cfilter = $category ? "and (Category1='" . $category . "' or Category2='" . $category . "')" : '';
$limit = $limit ? $limit : '5';
$frs = safe_column("name", "txp_section", "in_rss != '1'");
if ($frs) {
foreach ($frs as $f) {
$query[] = "and Section != '" . $f . "'";
}
}
$query[] = $sfilter;
$query[] = $cfilter;
$rs = safe_rows_start("*, unix_timestamp(Posted) as uPosted, ID as thisid", "textpattern", "Status = 4 " . join(' ', $query) . "and Posted < now() order by Posted desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
populateArticleData($a);
$a['posted'] = $uPosted;
$Body = !$syndicate_body_or_excerpt ? $thisarticle['body'] : $thisarticle['excerpt'];
$Body = !trim($Body) ? $thisarticle['body'] : $Body;
$Body = str_replace('href="/', 'href="' . hu, $Body);
$Body = preg_replace("/href=\\\"#(.*)\"/", "href=\"" . permlinkurl($a) . "#\\1\"", $Body);
$Body = safe_hed($Body);
$Body = preg_replace(array('/</', '/>/', "/'/", '/"/'), array('<', '>', ''', '"'), $Body);
// encode bare ampersands
$Body = preg_replace("/&(?![#0-9]+;|\\w+;)/i", '&', $Body);
$uTitle = $url_title ? $url_title : stripSpace($Title);
$uTitle = htmlspecialchars($uTitle, ENT_NOQUOTES);
if ($show_comment_count_in_feed) {
$dc = getCount('txp_discuss', "parentid={$ID} and visible=1");
$count = $dc > 0 ? ' [' . $dc . ']' : '';
} else {
$count = '';
}
$Title = doSpecial($Title) . $count;
$permlink = permlinkurl($a);
$item = tag(strip_tags($Title), 'title') . n . tag($Body, 'description') . n . tag($permlink, 'link');
$articles[$ID] = tag($item, 'item');
$etags[$ID] = strtoupper(dechex(crc32($articles[$ID])));
$dates[$ID] = $uPosted;
}
}
} elseif ($area == 'link') {
$cfilter = $category ? "category='{$category}'" : '1';
$limit = $limit ? $limit : 15;
$rs = safe_rows_start("*", "txp_link", "{$cfilter} order by date desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
$item = tag(doSpecial($linkname), 'title') . n . tag(doSpecial($description), 'description') . n . tag(doSpecial($url), 'link');
$articles[$id] = tag($item, 'item');
$etags[$id] = strtoupper(dechex(crc32($articles[$id])));
$dates[$id] = $date;
}
}
}
//turn on compression if we aren't using it already
if (extension_loaded('zlib') && ini_get("zlib.output_compression") == 0 && ini_get('output_handler') != 'ob_gzhandler' && !headers_sent()) {
ob_start("ob_gzhandler");
}
$last = fetch('unix_timestamp(val)', 'txp_prefs', 'name', 'lastmod');
$last = gmdate("D, d M Y H:i:s \\G\\M\\T", $last);
header("Last-Modified: {$last}");
$expires = gmdate('D, d M Y H:i:s \\G\\M\\T', time() + 3600 * 1);
header("Expires: {$expires}");
$hims = serverset('HTTP_IF_MODIFIED_SINCE');
if ($hims == $last) {
header("HTTP/1.1 304 Not Modified");
exit;
}
$imsd = @strtotime($hims);
if (is_callable('apache_request_headers')) {
$headers = apache_request_headers();
if (isset($headers["A-IM"])) {
$canaim = strpos($headers["A-IM"], "feed");
} else {
$canaim = false;
}
} else {
$canaim = false;
}
$hinm = stripslashes(serverset('HTTP_IF_NONE_MATCH'));
$cutarticles = false;
if ($canaim !== false) {
foreach ($articles as $id => $thing) {
if (strpos($hinm, $etags[$id]) !== false) {
unset($articles[$id]);
$cutarticles = true;
$cut_etag = true;
}
if ($dates[$id] < $imsd) {
unset($articles[$id]);
$cutarticles = true;
$cut_time = true;
}
}
}
if (isset($cut_etag) && isset($cut_time)) {
header("Vary: If-None-Match, If-Modified-Since");
} else {
if (isset($cut_etag)) {
header("Vary: If-None-Match");
} else {
if (isset($cut_time)) {
header("Vary: If-Modified-Since");
}
}
}
$etag = @join("-", $etags);
if (strstr($hinm, $etag)) {
header("HTTP/1.1 304 Not Modified");
exit;
}
if ($cutarticles) {
//header("HTTP/1.1 226 IM Used");
//This should be used as opposed to 200, but Apache doesn't like it.
//http://intertwingly.net/blog/2004/09/11/Vary-ETag/ says that the status code should be 200.
header("Cache-Control: no-store, im");
header("IM: feed");
}
$out = array_merge($out, $articles);
header("Content-Type: application/rss+xml; charset=utf-8");
if ($etag) {
header('ETag: "' . $etag . '"');
}
return '<rss version="0.92">' . tag(join(n, $out), 'channel') . '</rss>';
}
function atom()
{
global $thisarticle;
extract($GLOBALS['prefs']);
define("textplain", ' type="text/plain"');
define("texthtml", ' type="text/html"');
define("relalt", ' rel="alternate"');
define('appxhtml', ' type="application/xhtml+xml"');
define("divxhtml", '<div xmlns="http://www.w3.org/1999/xhtml">');
$area = doSlash(gps('area'));
extract(doSlash(gpsa(array('category', 'section', 'limit'))));
$last = fetch('unix_timestamp(val)', 'txp_prefs', 'name', 'lastmod');
$sitename .= $section ? ' - ' . $section : '';
$sitename .= $category ? ' - ' . $category : '';
$pub = safe_row("RealName, email", "txp_users", "privs=1");
$out[] = tag($sitename, 'title', textplain);
$out[] = tag($site_slogan, 'tagline', textplain);
$out[] = '<link' . relalt . texthtml . ' href="' . hu . '" />';
$articles = array();
//Atom feeds with mail or domain name
$dn = explode('/', $siteurl);
$mail_or_domain = $use_mail_on_feeds_id ? eE($blog_mail_uid) : $dn[0];
$out[] = tag('tag:' . $mail_or_domain . ',' . $blog_time_uid . ':' . $blog_uid . ($section ? '/' . $section : '') . ($category ? '/' . $category : ''), 'id');
$out[] = tag('Textpattern', 'generator', ' url="http://textpattern.com" version="' . $version . '"');
$out[] = tag(date("Y-m-d\\TH:i:s\\Z", $last), 'modified');
$auth[] = tag($pub['RealName'], 'name');
$auth[] = $include_email_atom ? tag(eE($pub['email']), 'email') : '';
$auth[] = tag(hu, 'url');
$out[] = tag(n . t . t . join(n . t . t, $auth) . n, 'author');
if (!$area or $area == 'article') {
$sfilter = $section ? "and Section = '" . $section . "'" : '';
$cfilter = $category ? "and (Category1='" . $category . "' or Category2='" . $category . "')" : '';
$limit = $limit ? $limit : '5';
$frs = safe_column("name", "txp_section", "in_rss != '1'");
foreach ($frs as $f) {
$query[] = "and Section != '" . $f . "'";
}
$query[] = $sfilter;
$query[] = $cfilter;
$rs = safe_rows_start("*, \n\t\t\t\tID as thisid, \n\t\t\t\tunix_timestamp(Posted) as uPosted,\n\t\t\t\tunix_timestamp(LastMod) as uLastMod", "textpattern", "Status=4 and Posted <= now() " . join(' ', $query) . "order by Posted desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
populateArticleData($a);
$a['posted'] = $uPosted;
if ($show_comment_count_in_feed) {
$dc = getCount('txp_discuss', "parentid={$ID} and visible=1");
$count = $dc > 0 ? ' [' . $dc . ']' : '';
} else {
$count = '';
}
$thisauthor = safe_field("RealName", "txp_users", "name='{$AuthorID}'");
$e['thisauthor'] = tag(n . t . t . t . tag(htmlspecialchars($thisauthor), 'name') . n . t . t, 'author');
$e['issued'] = tag(gmdate("Y-m-d\\TH:i:s\\Z", $uPosted), 'issued');
$e['modified'] = tag(gmdate("Y-m-d\\TH:i:s\\Z", $uLastMod), 'modified');
$escaped_title = safe_hed($Title);
$escaped_title = preg_replace("/&(?![#a-z0-9]+;)/i", '&', $escaped_title);
$escaped_title = str_replace('<', '<', $escaped_title);
$escaped_title = str_replace('>', '>', $escaped_title);
$e['title'] = tag($escaped_title . $count, 'title');
$uTitle = $url_title ? $url_title : stripSpace($Title);
$uTitle = htmlspecialchars($uTitle, ENT_NOQUOTES);
$permlink = permlinkurl($a);
$e['link'] = '<link' . relalt . texthtml . ' href="' . $permlink . '" />';
$e['id'] = tag('tag:' . $mail_or_domain . ',' . $feed_time . ':' . $blog_uid . '/' . $uid, 'id');
$e['subject'] = tag(htmlspecialchars($Category1), 'dc:subject');
// pull Body or Excerpt?
$Body = !$syndicate_body_or_excerpt ? $thisarticle['body'] : $thisarticle['excerpt'];
// if Excerpt is empty, switch back to Body_html
$Body = !trim($Body) ? $thisarticle['body'] : $Body;
// fix relative urls
$Body = str_replace('href="/', 'href="' . hu, $Body);
$Body = preg_replace("/href=\\\"#(.*)\"/", "href=\"" . permlinkurl($a) . "#\\1\"", $Body);
$Body = safe_hed($Body);
// encode and entify
$Body = preg_replace(array('/</', '/>/', "/'/", '/"/'), array('<', '>', ''', '"'), $Body);
// encode bare ampersands
$Body = preg_replace("/&(?![#0-9]+;|\\w+;)/i", '&', $Body);
$e['content'] = tag(n . $Body . n, 'content', ' type="text/html" mode="escaped"');
$articles[$ID] = tag(n . t . t . join(n . t . t, $e) . n, 'entry');
$etags[$ID] = strtoupper(dechex(crc32($articles[$ID])));
$dates[$ID] = $uLastMod;
}
}
} elseif ($area == 'link') {
$cfilter = $category ? "category='{$category}'" : '1';
$limit = $limit ? $limit : 15;
$rs = safe_rows_start("*", "txp_link", "{$cfilter} order by date desc limit {$limit}");
if ($rs) {
while ($a = nextRow($rs)) {
extract($a);
$e['title'] = tag(doSpecial($linkname), 'title');
$content = utf8_encode(htmlspecialchars($description));
$e['content'] = tag(n . $description . n, 'content', ' type="text/html" mode="escaped"');
$url = preg_replace("/^\\/(.*)/", "http://{$siteurl}/\$1", $url);
$url = preg_replace("/&((?U).*)=/", "&\\1=", $url);
$e['link'] = '<link' . relalt . texthtml . ' href="' . $url . '" />';
$e['issued'] = tag(gmdate("Y-m-d\\TH:i:s\\Z", $date), 'issued');
$e['modified'] = tag(gmdate("Y-m-d\\TH:i:s\\Z", $date), 'modified');
$e['id'] = tag('tag:' . $mail_or_domain . ',' . $feed_time . ':' . $id, 'id');
$articles[$id] = tag(n . t . t . join(n . t . t, $e) . n, 'entry');
$etags[$id] = strtoupper(dechex(crc32($articles[$id])));
$dates[$id] = $date;
}
}
}
if (!empty($articles)) {
//turn on compression if we aren't using it already
if (extension_loaded('zlib') && ini_get("zlib.output_compression") == 0 && ini_get('output_handler') != 'ob_gzhandler' && !headers_sent()) {
ob_start("ob_gzhandler");
}
$last = fetch('unix_timestamp(val)', 'txp_prefs', 'name', 'lastmod');
$last = gmdate("D, d M Y H:i:s \\G\\M\\T", $last);
header("Last-Modified: {$last}");
$expires = gmdate('D, d M Y H:i:s \\G\\M\\T', time() + 3600 * 1);
header("Expires: {$expires}");
$hims = serverset('HTTP_IF_MODIFIED_SINCE');
if ($hims == $last) {
header("HTTP/1.1 304 Not Modified");
exit;
}
$imsd = @strtotime($hims);
if (is_callable('apache_request_headers')) {
$headers = apache_request_headers();
if (isset($headers["A-IM"])) {
$canaim = strpos($headers["A-IM"], "feed");
} else {
$canaim = false;
}
} else {
$canaim = false;
}
$hinm = stripslashes(serverset('HTTP_IF_NONE_MATCH'));
$cutarticles = false;
if ($canaim !== false) {
foreach ($articles as $id => $thing) {
if (strpos($hinm, $etags[$id])) {
unset($articles[$id]);
$cutarticles = true;
$cut_etag = true;
}
if ($dates[$id] < $imsd) {
unset($articles[$id]);
$cutarticles = true;
$cut_time = true;
}
}
}
if (isset($cut_etag) && isset($cut_time)) {
header("Vary: If-None-Match, If-Modified-Since");
} else {
if (isset($cut_etag)) {
header("Vary: If-None-Match");
} else {
if (isset($cut_time)) {
header("Vary: If-Modified-Since");
}
}
}
$etag = @join("-", $etags);
if (strstr($hinm, $etag)) {
header("HTTP/1.1 304 Not Modified");
exit;
}
if ($etag) {
header('ETag: "' . $etag . '"');
}
if ($cutarticles) {
//header("HTTP/1.1 226 IM Used");
//This should be used as opposed to 200, but Apache doesn't like it.
//http://intertwingly.net/blog/2004/09/11/Vary-ETag/ says that the status code should be 200.
header("Cache-Control: no-store, im");
header("IM: feed");
}
$out = array_merge($out, $articles);
ob_start();
header('Content-type: application/atom+xml; charset=utf-8');
return chr(60) . '?xml version="1.0" encoding="UTF-8"?' . chr(62) . n . '<feed version="0.3" xml:lang="' . $language . '" xmlns="http://purl.org/atom/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">' . join(n, $out) . '</feed>';
}
}
