ret = "failed";
// Remember interval in class
$this->update_interval = $interval;
// Remeber path
$this->cache_path = $path;
// Check if path exists
if ((is_dir($path)) && (!$tested)) {
// Check if we can create a file inside the path
@touch($path."dummy.tmp", 'w');
if (FILE_READABLE($path."dummy.tmp")) {
// Yes, we can do. So let's remove it
@unlink($path."dummy.tmp");
// Is there a .htaccess file?
if (FILE_READABLE($path.".htaccess")) {
// Update database that we have tested it
UPDATE_CONFIG("cache_tested", 1);
// All done!
$this->ret = "done";
} else {
// Stop! Set a .htaccess file first
$this->ret = "htaccess";
}
}
} elseif ($tested) {
// System already tested
$this->ret = "done";
}
}
function cache_file($file, $ignore_ctime=false) {
global $INC;
// Construct FQFN (full qualified file name)
$inc = $this->cache_path.$file.".cache";
// Rember it + filename in class
$this->cache_inc = $inc;
// Check if file exists
$status = (FILE_READABLE($inc) && (is_writeable($inc)));
if ($status) {
// Yes, it does. So let's get it's last changed date/time
$ctime = filectime($inc);
} else {
// No, it doesn't. Zero date/time
$ctime = 0;
}
// Remember change date/time in class
$this->cache_ctime = $ctime;
// Is the cache file outdated?
if (((time() - $ctime) >= $this->update_interval) && (!$ignore_ctime)) {
// Ok, we need an update!
$status = false;
}
// Return status
return $status;
}
function cache_init($array) {
// This will destory an existing cache file!
if ($this->ret == "done") {
// Create file
if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
$fp = @fopen($this->cache_inc, 'w') or mxchange_die("Cannot write to cache ".$this->cache_inc." !");
// Begin of cache file
fwrite($fp, "\$ARRAY = \"".$array."\";\n\n");
// Remember file pointer
$this->cache_pointer = $fp;
} else {
// Cannot create file
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function add_row ($data) {
global $cacheArray;
if (is_resource($this->cache_pointer)) {
// Write every array element to cache file
foreach ($data as $k => $v) {
// Write global cache array for immediate access
if ((substr($k, 0, 4) == "ext_") && (isset($data['ext_name'])) && (isset($data['ext_id']))) {
if ($k != "ext_name") {
$cacheArray['extensions'][$k][$data['ext_name']] = $v;
} else {
$cacheArray['extensions'][$k][$data['ext_id']] = $v;
}
if (($k == "ext_keep") && ($v == "Y")) {
$cacheArray['active_extensions'][$data['ext_name']] = $v;
} // END - if
} elseif (is_array($v)) {
// Serialize and BASE64-encode the array
$v = base64_encode(serialize($v));
}
// Write cache line to file
@fwrite($this->cache_pointer, $this->add_raw_row($k, $v));
}
} else {
// Cannot create file
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function cache_close()
{
// Quit function when no pointer is set
if (empty($this->cache_pointer)) return;
if ($this->cache_pointer)
{
// Close file add destroy handler
@fclose($this->cache_pointer);
// Set rights
if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
// Remove pointer
unset($this->cache_pointer);
}
else
{
// Cannot create file
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function cache_load() {
// Is the cache file there?
if (FILE_READABLE($this->cache_inc)) {
// Prepare temporary array
$data = array();
$cache_version = null;
// Load cache file
$this->cache_data = implode("", file($this->cache_inc));
// Execute cache file
eval($this->cache_data);
if (is_array($data)) {
// Cache data
$this->cache_data = $data;
// Cache version found?
if ((isset($cache_version)) && (is_array($cache_version))) {
// Remember it as well...
$this->cache_version = $cache_version;
} // END - if
// Return cache
return $this->cache_data;
} else {
// Cache problem detected!
$this->cache_destroy();
}
} else {
// Cache file not found or not readable
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_LOAD_1.$this->cache_inc.CACHE_CANNOT_LOAD_2);
}
}
// Destroy an existing cache file
function cache_destroy() {
// Is the cache file there?
if (FILE_READABLE($this->cache_inc)) {
// Remove cache file from system
@unlink($this->cache_inc);
if (!FILE_READABLE($this->cache_inc)) {
// Close cache automatically (we don't need it anymore!)
$this->cache_close();
} else {
// Not removed!
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_UNLINK_1.$this->cache_inc.CACHE_CANNOT_UNLINK_2);
}
} else {
// Does not exist!
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_UNLINK_1.$this->cache_inc.CACHE_CANNOT_UNLINK_2);
}
}
function cache_remove($search, $data, $array)
{
global $ARRAY;
if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc))) {
// Load cache into dummy array
$dummy = $this->cache_load();
// Search for key in array
$key = array_search($data, $dummy[$search]);
if (!empty($key)) {
// Key (hopefully) found?
foreach ($array as $a) {
// So we can remove all elements as requested
unset($dummy[$a][$key]);
}
// Flush array to cache file
$fp = fopen($this->cache_inc, 'w');
fwrite($fp, "\$ARRAY = \"".$ARRAY."\";\n");
foreach ($dummy as $k => $v) {
if (is_array($v)) {
// Multi line(s) found
$LINE = "";
foreach($v as $k2 => $v2) {
// Put every array element in a row...
$LINE .= $this->add_raw_row($k, $v2);
}
} else {
// Single line found
$LINE = $this->add_raw_row($k, $v);
}
// Write line(s)
fwrite($fp, $LINE);
}
// Close cache file
fclose($fp);
}
} else {
// Cannot write to cache!
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function cache_replace($search, $replace, $search_key, $array)
{
global $ARRAY;
if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc)))
{
// Load cache into dummy array
$dummy = $this->cache_load();
// Check if $dummy is valid (prevents some errors)
if ((is_array($dummy)) && (isset($dummy[$search])) && (is_array($dummy[$search]))) {
// Search for key in array
$key_found = array_key_exists($search_key, $dummy[$search]);
if ($key_found == true) {
$key = $search_key;
// Key (hopefully) found?
foreach ($dummy as $a => $v) {
// So we can update all entries
if ($a == $search) {
// Update now...
$dummy[$a][$search_key] = $replace;
}
}
// Flush array to cache file
$fp = fopen($this->cache_inc, 'w');
fwrite($fp, "\$dummy = \"".$ARRAY."\";\n");
foreach ($dummy as $k => $v) {
if (is_array($v)) {
// Multi line(s) found
$LINE = "";
foreach($v as $k2 => $v2) {
// Put every array element in a row...
$LINE .= $this->add_raw_row($k, $v2);
}
} else {
// Single line found
$LINE = $this->add_raw_row($k, $v);
}
// Write line(s)
fwrite($fp, $LINE);
}
// Close cache file
fclose($fp);
}
}
} else {
// Cannot write to cache!
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function store_extension_version ($ext_name) {
// Valid cache pointer?
if (is_resource($this->cache_pointer)) {
// Get extension version
$ext_ver = GET_EXT_VERSION($ext_name);
// Write cache line to file
@fwrite($this->cache_pointer, "\$cache_version['".$ext_name."'] = \"".$ext_ver."\";\n");
} else {
// Cannot create file
ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
}
}
function ext_version_matches ($ext_name) {
// Load cache (dummy)
$this->cache_load();
// Get extension version
$ext_ver = GET_EXT_VERSION($ext_name);
//* DEBUG: */ echo __METHOD__.": ext_name={$ext_name},ext_ver={$ext_ver},cache_version={$this->cache_version}
\n";
// Compare both
return ((isset($this->cache_version[$ext_name])) && ($this->cache_version[$ext_name] == $ext_ver));
}
function add_raw_row ($key, $value) {
// Init line
$line = "";
// String or non-string? ;-)
if (is_string($value)) {
// String...
$line = "\$data['".$key."'][] = \"".$value."\";\n";
} else {
// Non-string
$line = "\$data['".$key."'][] = ".$value.";\n";
}
// Return line
return $line;
}
function getStatus () {
return $this->ret;
}
}
//
?>