function ewiki_speed_abort($id, &$data, $action)
{
$o = "";
// unused here
$inverse = 0;
$yes = 0;
$precond = 0;
#-- ETag comparisions
if (($if = $_SERVER["HTTP_IF_MATCH"]) || ($if = $_SERVER["HTTP_IF_NONE_MATCH"]) && ($inverse = 1)) {
$data["version"] and $etag = ewiki_etag($data) or $etag = "never:matching:" . time();
#-- walk through comparison values
foreach (explode(",", $if) as $match) {
$match = trim(trim($match), '"');
if ($match == "*" || $match == $etag) {
$yes = 1;
}
$precond = 1;
}
}
#-- check against modification time
if (($if = $_SERVER["HTTP_IF_MODIFIED_SINCE"]) || ($if = $_SERVER["HTTP_IF_UNMODIFIED_SINCE"]) && ($inverse = 1)) {
$modif = $data["lastmodified"] or $modif = UNIX_MILLENNIUM;
$if = strtotime(trim($if));
if ($modif > $if) {
$yes = 1;
}
}
#-- invert result
if ($inverse) {
$yes = $yes ? 0 : 1;
}
#-- abort ewiki rendering, if matched or senseful to do so
if ($yes || $_SERVER["REQUEST_METHOD"] == "HEAD") {
/*
#ewiki_http_headers($o, $id, $data, $action);
(It was probably bad to send the ETag and Content-Version fields
for this http answer?)
*/
header("Status: 304 Not Modified");
die(304);
} elseif ($precond) {
if (!$inverse || $_SERVER["REQUEST_METHOD"] != "GET") {
header("Status: 412 Precondition Failed");
die(412);
}
}
}
function ewiki_http_headers(&$o, $id, &$data, $action)
{
global $ewiki_t;
if (EWIKI_HTTP_HEADERS && !headers_sent()) {
if (!empty($data)) {
if ($uu = @$data["id"]) {
@header('Content-Disposition: inline; filename="' . urlencode($uu) . '.html"');
}
if ($uu = @$data["version"]) {
@header('Content-Version: ' . $uu);
}
if ($uu = @$data["lastmodified"]) {
@header('Last-Modified: ' . gmstrftime($ewiki_t["C"]["DATE"], $uu));
}
}
if (EWIKI_NO_CACHE) {
header('Expires: ' . gmstrftime($ewiki_t["C"]["DATE"], UNIX_MILLENNIUM));
header('Pragma: no-cache');
header('Cache-Control: no-cache, private, must-revalidate');
# change to "C-C: cache, must-revalidate" ??
# private only for authenticated users / _PROT_MODE
}
#-- ETag
if ($data["version"] && ($etag = ewiki_etag($data)) || ($etag = md5($o))) {
$weak = "W/" . urlencode($id) . "." . $data["version"];
header("ETag: \"{$etag}\"");
###, \"$weak\"");
}
}
}
function fileinfo(&$data)
{
#-- create meta/properties array
$ct = $data["meta"]["Content-Type"] or $ct = EWIKI_PAGE_CTYPE;
$m = array("path" => "/" . $data["id"], "resourcetype" => "", "creationdate" => $data["created"], "getcontentlength" => strlen($data["content"]), "getlastmodified" => $data["lastmodified"], "getcontenttype" => $ct, "displayname" => ewiki_split_title($data["id"]), "getetag" => ewiki_etag($data), "getcontentlanguage" => EWIKI_DEFAULT_LANG, "page:author" => $data["author"], "page:version" => $data["version"], "page:hits" => $data["hits"], "page:log" => $data["meta"]["log"], "page:user-agent" => $data["meta"]["user-agent"]);
#-- add {meta}² entries
if ($meta = $data["meta"]["meta"]) {
foreach ($meta as $i => $v) {
$m["meta:{$i}"] = implode(", ", $v);
}
}
return $m;
}
function ewiki_feed_atom($info, $pages)
{
header('Content-Type: application/atom+xml');
$name = $info["title"];
$ilm = gmstrftime("%G%m%dT%TZ", $info["modified"]);
echo <<<EOT
<?xml version="1.0" encoding="{$info['charset']}"?>
<feed version="0.3" xmlns="http://purl.org/atom/ns#">
<title>{$name}</title>
<link rel="alternate" type="text/html" href="{$info['url']}"/>
<modified>{$ilm}</modified>
<author>*</author>
<generator>{$info['ewiki']}</generator>
EOT;
#-- write items
foreach ($pages as $i => $data) {
$etag = ewiki_etag($data);
echo <<<EOT
<entry>
<title>{$data['title']}</title>
<link rel="alternate" type="text/html" href="{$data['url']}"/>
<id>{$etag}</id>
<issued>{$data['icdate']}</issued>
<created>{$data['icdate']}</created>
<modified>{$data['idate']}</modified>
<content>{$data['content']}</content>
</entry>
EOT;
}
//<?
echo "</feed>\n";
die;
}
