public function __construct($action, $settings, $extra)
{
require_once '../model/Error.inc.php';
if ($this->profile) {
Zotero_DB::profileStart($this->profileShard);
}
$this->startTime = microtime(true);
// Inflate gzipped data
if (!empty($_SERVER['HTTP_CONTENT_ENCODING']) && $_SERVER['HTTP_CONTENT_ENCODING'] == 'gzip') {
$gzdata = file_get_contents('php://input');
// Firefox 12 and above include the standard gzip header,
// which needs to be stripped
if (substr($gzdata, 0, 3) == chr(31) . chr(139) . chr(8)) {
// 1F 8B 08
$gzdata = substr($gzdata, 10);
}
$data = gzinflate($gzdata);
parse_str($data, $_POST);
foreach ($_POST as $key => $val) {
$_REQUEST[$key] = $val;
}
}
$this->responseXML = Zotero_Sync::getResponseXML();
//if (!Z_CONFIG::$SYNC_ENABLED && $_SERVER["REMOTE_ADDR"] != '') {
if (!Z_CONFIG::$SYNC_ENABLED) {
$this->error(503, 'SERVER_ERROR', Z_CONFIG::$MAINTENANCE_MESSAGE);
}
if (empty($_REQUEST['version'])) {
if ($action == 'index') {
echo "Nothing to see here.";
exit;
}
$this->error(400, 'NO_API_VERSION', "API version not specified");
}
$upgradeMessage = "Due to improvements made to sync functionality, you must upgrade to Zotero 2.0 or later (via Firefox's Tools menu -> Add-ons -> Extensions -> Find Updates or from zotero.org) to sync your Zotero library.";
if (isset($_SERVER['HTTP_X_ZOTERO_VERSION'])) {
require_once '../model/ToolkitVersionComparator.inc.php';
if ($_SERVER['HTTP_X_ZOTERO_VERSION'] == "2.0b6") {
die("Please upgrade to Zotero 2.0 via Tools -> Add-ons -> Extensions -> Find Updates or from zotero.org.");
} else {
if (preg_match("/2.0b[0-9].SVN/", $_SERVER['HTTP_X_ZOTERO_VERSION'])) {
// Can't use version for SVN builds
} else {
if (ToolkitVersionComparator::compare($_SERVER['HTTP_X_ZOTERO_VERSION'], "2.0rc.r5716") < 0) {
$this->error(400, 'UPGRADE_REQUIRED', $upgradeMessage);
}
}
}
}
if (!in_array($_REQUEST['version'], $this->validAPIVersions)) {
if ($_REQUEST['version'] < 8) {
$this->error(400, 'UPGRADE_REQUIRED', $upgradeMessage);
}
$this->error(400, 'INVALID_API_VERSION', "Invalid request API version '{$_REQUEST['version']}'");
}
$this->apiVersion = (int) $_REQUEST['version'];
$this->responseXML['version'] = $this->apiVersion;
}
private function handleUpdatedError(Exception $e)
{
if ($this->responseXML) {
unset($this->responseXML->updated);
} else {
$this->responseXML = Zotero_Sync::getResponseXML($this->apiVersion);
}
$msg = $e->getMessage();
//if (strpos($msg, "Can't connect to MySQL server on") !== false) {
// $this->error(503, 'SERVER_ERROR', "Syncing is currently unavailable for some users due to a server issue. We're working to restore service as soon as possible. Our apologies for the inconvenience.");
//}
if (strpos($msg, "Lock wait timeout exceeded; try restarting transaction") !== false || strpos($msg, "Deadlock found when trying to get lock; try restarting transaction") !== false || strpos($msg, "Too many connections") !== false || strpos($msg, "Can't connect to MySQL server") !== false || strpos($msg, " is down") !== false || $e->getCode() == Z_ERROR_SHARD_UNAVAILABLE) {
$waitTime = $this->getWaitTime($this->sessionID);
Z_Core::logError("WARNING: {$msg} -- sending sync wait ({$waitTime})");
$locked = $this->responseXML->addChild('locked');
$locked['wait'] = $waitTime;
$this->end();
}
if (Z_ENV_TESTING_SITE) {
throw $e;
} else {
$id = substr(md5(uniqid(rand(), true)), 0, 10);
$str = date("D M j G:i:s T Y") . "\n";
$str .= "IP address: " . $_SERVER['REMOTE_ADDR'] . "\n";
if (isset($_SERVER['HTTP_X_ZOTERO_VERSION'])) {
$str .= "Version: " . $_SERVER['HTTP_X_ZOTERO_VERSION'] . "\n";
}
$str .= "Error: " . $e;
$str .= $this->responseXML->saveXML();
if (!file_put_contents(Z_CONFIG::$SYNC_ERROR_PATH . $id, $str)) {
error_log("Unable to save error report to " . Z_CONFIG::$SYNC_ERROR_PATH . $id);
}
$this->error(500, 'INVALID_OUTPUT', "Invalid response from server (Report ID: {$id})");
}
}
