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phab/src/applications/conduit/method/ConduitAPI_conduit_connect_Method.php
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ConduitAPI_conduit_connect_Method.php
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<?php
/**
* @group conduit
*/
final class ConduitAPI_conduit_connect_Method extends ConduitAPIMethod {
public function shouldRequireAuthentication() {
return false;
}
public function shouldAllowUnguardedWrites() {
return true;
}
public function getMethodDescription() {
return "Connect a session-based client.";
}
public function defineParamTypes() {
return array(
'client' => 'required string',
'clientVersion' => 'required int',
'clientDescription' => 'optional string',
'user' => 'optional string',
'authToken' => 'optional int',
'authSignature' => 'optional string',
'host' => 'required string',
);
}
public function defineReturnType() {
return 'dict<string, any>';
}
public function defineErrorTypes() {
return array(
"ERR-BAD-VERSION" =>
"Client/server version mismatch. Upgrade your server or downgrade ".
"your client.",
"NEW-ARC-VERSION" =>
"Client/server version mismatch. Upgrade your client.",
"ERR-UNKNOWN-CLIENT" =>
"Client is unknown.",
"ERR-INVALID-USER" =>
"The username you are attempting to authenticate with is not valid.",
"ERR-INVALID-CERTIFICATE" =>
"Your authentication certificate for this server is invalid.",
"ERR-INVALID-TOKEN" =>
"The challenge token you are authenticating with is outside of the ".
"allowed time range. Either your system clock is out of whack or ".
"you're executing a replay attack.",
"ERR-NO-CERTIFICATE" => "This server requires authentication.",
);
}
protected function execute(ConduitAPIRequest $request) {
$this->validateHost($request->getValue('host'));
$client = $request->getValue('client');
$client_version = (int)$request->getValue('clientVersion');
$client_description = (string)$request->getValue('clientDescription');
$username = (string)$request->getValue('user');
// Log the connection, regardless of the outcome of checks below.
$connection = new PhabricatorConduitConnectionLog();
$connection->setClient($client);
$connection->setClientVersion($client_version);
$connection->setClientDescription($client_description);
$connection->setUsername($username);
$connection->save();
switch ($client) {
case 'arc':
$server_version = 6;
$supported_versions = array(
$server_version => true,
// Client version 5 introduced "user.query" call
4 => true,
// Client version 6 introduced "diffusion.getlintmessages" call
5 => true,
);
if (empty($supported_versions[$client_version])) {
if ($server_version < $client_version) {
$ex = new ConduitException('ERR-BAD-VERSION');
$ex->setErrorDescription(
"Your 'arc' client version is '{$client_version}', which ".
"is newer than the server version, '{$server_version}'. ".
"Upgrade your Phabricator install.");
} else {
$ex = new ConduitException('NEW-ARC-VERSION');
$ex->setErrorDescription(
"A new version of arc is available! You need to upgrade ".
"to connect to this server (you are running version ".
"{$client_version}, the server is running version ".
"{$server_version}).");
}
throw $ex;
}
break;
default:
// Allow new clients by default.
break;
}
$token = $request->getValue('authToken');
$signature = $request->getValue('authSignature');
$user = id(new PhabricatorUser())->loadOneWhere(
'username = %s',
$username);
if (!$user) {
throw new ConduitException('ERR-INVALID-USER');
}
$session_key = null;
if ($token && $signature) {
$threshold = 60 * 15;
$now = time();
if (abs($token - $now) > $threshold) {
throw id(new ConduitException('ERR-INVALID-TOKEN'))
->setErrorDescription(
pht(
"The request you submitted is signed with a timestamp, but that ".
"timestamp is not within %s of the current time. The ".
"signed timestamp is %s (%s), and the current server time is ".
"%s (%s). This is a difference of %s seconds, but the ".
"timestamp must differ from the server time by no more than ".
"%s seconds. Your client or server clock may not be set ".
"correctly.",
phabricator_format_relative_time($threshold),
$token,
date('r', $token),
$now,
date('r', $now),
($token - $now),
$threshold));
}
$valid = sha1($token.$user->getConduitCertificate());
if ($valid != $signature) {
throw new ConduitException('ERR-INVALID-CERTIFICATE');
}
$session_key = id(new PhabricatorAuthSessionEngine())
->establishSession('conduit', $user->getPHID());
} else {
throw new ConduitException('ERR-NO-CERTIFICATE');
}
return array(
'connectionID' => $connection->getID(),
'sessionKey' => $session_key,
'userPHID' => $user->getPHID(),
);
}
}
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