149 lines
3.7 KiB
PHP
149 lines
3.7 KiB
PHP
<?php
|
|
|
|
/****************************************************************************
|
|
* STATIC RESOURCES MANAGEMENT
|
|
****************************************************************************/
|
|
|
|
global $resources;
|
|
|
|
|
|
/** This variable contains the list of resources to be loaded.
|
|
*/
|
|
$resources = array();
|
|
|
|
|
|
/** This function appends a resource of some type to the list of resources
|
|
* to be loaded.
|
|
*/
|
|
function addFileResource($type, $path) {
|
|
if (!file_exists($path)) {
|
|
//logText("Resource type '$type': '$path' not found", LOG_DEBUG);
|
|
return false;
|
|
}
|
|
|
|
global $resources;
|
|
if (!is_array($resources[$type])) {
|
|
$resources[$type] = array();
|
|
}
|
|
|
|
$contents = @file_get_contents($path);
|
|
if ($contents === FALSE) {
|
|
l::notice("Resource type '$type': unable to read '$path'");
|
|
return false;
|
|
}
|
|
$md5 = md5($contents);
|
|
|
|
array_push($resources[$type], array($path, $md5, $contents));
|
|
return true;
|
|
}
|
|
|
|
|
|
/** This function appends a chunk of raw text to a resource output.
|
|
*/
|
|
function addRawResource($type, $text) {
|
|
global $resources;
|
|
if (!is_array($resources[$type])) {
|
|
$resources[$type] = array();
|
|
}
|
|
|
|
$md5 = md5($text);
|
|
array_push($resources[$type], array(null, $md5, $text));
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/** This function generates the cached output for a set of resources.
|
|
*/
|
|
function generateResourceCache($type, $md5) {
|
|
if (!is_dir(config::$main['cachedir']) && !@mkdir(config::$main['cachedir'])) {
|
|
return false;
|
|
}
|
|
|
|
$f = @fopen(config::$main['cachedir'] . "/$md5.$type", "w");
|
|
if (!$f) {
|
|
return false;
|
|
}
|
|
|
|
global $resources;
|
|
$c = count($resources[$type]);
|
|
for ($i=0;$i<$c;$i++) {
|
|
fwrite($f, preg_replace('/__STATICURL__/', config::$main['staticurl'], $resources[$type][$i][2]) . "\n");
|
|
}
|
|
|
|
fclose($f);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/** This function stores a ressource into the database so that it may be used
|
|
* from other scripts.
|
|
*/
|
|
function storeResource($type, $deleteOld = 0, $write = true) {
|
|
global $resources;
|
|
if (!is_array($resources[$type])) {
|
|
// l::notice("No resource of type $type");
|
|
return null;
|
|
}
|
|
|
|
// Delete old entries
|
|
if ($deleteOld > 0) {
|
|
if ($write) {
|
|
$q = dbQuery("SELECT md5 FROM web_cache WHERE unix_timestamp(now())-last_used>$deleteOld AND rtype='$type'");
|
|
while ($r = dbFetchArray($q)) {
|
|
@unlink(config::$main['cachedir'] . "/{$r[0]}.$type");
|
|
}
|
|
}
|
|
dbQuery("DELETE FROM web_cache WHERE unix_timestamp(now())-last_used>$deleteOld AND rtype='$type'");
|
|
}
|
|
|
|
// Check for an existing entry
|
|
$md5 = md5(serialize($resources[$type]));
|
|
$q = dbQuery("SELECT id FROM web_cache WHERE rtype='$type' AND md5='$md5' FOR SHARE");
|
|
if ($q && dbCount($q)) {
|
|
list($id) = dbFetchArray($q);
|
|
return $id;
|
|
}
|
|
|
|
// Generate the output file
|
|
if ($write && !generateResourceCache($type, $md5)) {
|
|
l::warn("Resource file generation failed (type $type)");
|
|
return null;
|
|
}
|
|
|
|
// Add the database entry
|
|
return dbQuery("INSERT INTO web_cache(rtype,md5,last_used) VALUES('$type','$md5'," . time() . ")");
|
|
}
|
|
|
|
|
|
/** This function reads a resource, identified by its DB identifier, from the
|
|
* database. If the resource is found in the base, it then tries to send the
|
|
* file's contents.
|
|
*/
|
|
function displayResource($id, $rtype) {
|
|
$q = dbQuery("SELECT rtype,md5 FROM web_cache WHERE id=$id FOR UPDATE");
|
|
if (!($q && dbCount($q) == 1)) {
|
|
l::warn("Resource ID '$id' not in the database");
|
|
return false;
|
|
}
|
|
|
|
list($dbtype,$md5) = dbFetchArray($q);
|
|
if ($rtype != $dbtype) {
|
|
l::warn("Resource ID '$id' has wrong type $dbtype (expected $rtype)");
|
|
return false;
|
|
}
|
|
|
|
dbQuery("UPDATE web_cache SET last_used=" . time() . " WHERE id=$id");
|
|
endRequest(false);
|
|
|
|
$path = config::$main['cachedir'] . "/$md5.$rtype";
|
|
if (readfile($path) === FALSE) {
|
|
l::warn("File not found for resource '$id': $path");
|
|
return false;
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
|
|
?>
|