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<?php
function conf_init() {
/*
** Try finding a matching configuration file by stripping the website's
** URI from left to right. If no configuration file is found, return a
** default value 'conf'.
*/
$uri = $_SERVER["PHP_SELF"];
$file = strtolower(strtr($_SERVER["HTTP_HOST"] . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
while (strlen($file) > 4) {
if (file_exists("includes/$file.php")) {
return $file;
}
else {
$file = substr($file, strpos($file, ".") + 1);
}
}
return "conf";
}
function variable_init($conf = array()) {
$result = db_query("SELECT * FROM {variable} ");
while ($variable = db_fetch_object($result)) {
if (!isset($conf[$variable->name])) {
$conf[$variable->name] = unserialize($variable->value);
}
}
return $conf;
}
function variable_get($name, $default) {
global $conf;
return isset($conf[$name]) ? $conf[$name] : $default;
}
function variable_set($name, $value) {
global $conf;
db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, serialize($value));
$conf[$name] = $value;
}
function variable_del($name) {
global $conf;
db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
unset($conf[$name]);
}
function cache_get($key) {
$cache = db_fetch_object(db_query("SELECT data, created FROM {cache} WHERE cid = '%s'", $key));
return $cache->data ? $cache : 0;
}
function cache_set($cid, $data, $expire = 0) {
db_query("UPDATE {cache} SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
if (!db_affected_rows()) {
db_query("INSERT INTO {cache} (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
}
}
function cache_clear_all($cid = NULL) {
if (empty($cid)) {
db_query("DELETE FROM {cache} WHERE expire <> 0");
}
else {
db_query("DELETE FROM {cache} WHERE cid = '%s'", $cid);
}
}
function page_set_cache() {
global $user;
if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
if ($data = ob_get_contents()) {
cache_set(request_uri(), $data, 1);
}
}
}
function page_get_cache() {
global $user;
$cache = NULL;
if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
$cache = cache_get(request_uri());
if (empty($cache)) {
ob_start();
}
}
return $cache;
}
function drupal_page_header() {
if (variable_get("dev_timer", 0)) {
timer_start();
}
if (variable_get("cache", 0)) {
if ($cache = page_get_cache()) {
// Set default values:
$date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
$etag = '"'. md5($date) .'"';
// Check http headers:
$modified_since = isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) ? $_SERVER["HTTP_IF_MODIFIED_SINCE"] == $date : NULL;
$none_match = isset($_SERVER["HTTP_IF_NONE_MATCH"]) ? $_SERVER["HTTP_IF_NONE_MATCH"] == $etag : NULL;
// The type checking here is very important, be careful when changing entries.
if (($modified_since !== NULL || $none_match !== NULL) && $modified_since !== false && $none_match !== false) {
header("HTTP/1.0 304 Not Modified");
exit();
}
// Send appropriate response:
header("Last-Modified: $date");
header("ETag: $etag");
print $cache->data;
/*
** call all init() and exit() hooks without including all modules
** only use those hooks for critical operations
*/
foreach (module_list(0, 1) as $module) {
if (is_array($module) && $module['bootstrap']) {
include_once $module['filename'];
foreach (bootstrap_hooks() as $hook) {
module_invoke($module['name'], $hook);
}
}
}
exit();
}
}
}
// critical hooks called even when serving a cached page
function bootstrap_hooks() {
return array('init', 'exit');
}
function referer_uri() {
if (isset($_SERVER["HTTP_REFERER"])) {
$uri = $_SERVER["HTTP_REFERER"];
return check_url($uri);
}
}
function arg($index) {
static $arguments;
if (empty($arguments)) {
$arguments = explode("/", $_GET["q"]);
}
return $arguments[$index];
}
function check_query($text) {
return addslashes($text);
}
function check_url($uri) {
$uri = htmlspecialchars($uri, ENT_QUOTES);
/*
** We replace ( and ) with their entity equivalents to prevent XSS
** attacks.
*/
$uri = strtr($uri, array("(" => "&040;", ")" => "&041;"));
return $uri;
}
function request_uri() {
/*
** Since request_uri() is only available on Apache, we generate
** equivalent using other environment vars.
*/
if (isset($_SERVER["REQUEST_URI"])) {
$uri = $_SERVER["REQUEST_URI"];
}
else {
$uri = $_SERVER["PHP_SELF"] ."?". $_SERVER["QUERY_STRING"];
}
return check_url($uri);
}
function timer_start() {
global $timer;
list($usec, $sec) = explode(" ", microtime());
$timer = (float)$usec + (float)$sec;
}
unset($conf);
$config = conf_init();
include_once "includes/$config.php";
include_once "includes/database.inc";
include_once "includes/session.inc";
include_once "includes/module.inc";
// initialize configuration variables, using values from conf.php if available:
$conf = variable_init(isset($conf) ? $conf : array());
?>
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