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phorge/src/applications/conduit/method/ConduitConnectConduitAPIMethod.php
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ConduitConnectConduitAPIMethod.php
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<?php
final class ConduitConnectConduitAPIMethod extends ConduitAPIMethod {
public function getAPIMethodName() {
return 'conduit.connect';
}
public function shouldRequireAuthentication() {
return false;
}
public function shouldAllowUnguardedWrites() {
return true;
}
public function getMethodDescription() {
return pht('Connect a session-based client.');
}
protected function defineParamTypes() {
return array(
'client' => 'required string',
'clientVersion' => 'required int',
'clientDescription' => 'optional string',
'user' => 'optional string',
'authToken' => 'optional int',
'authSignature' => 'optional string',
'host' => 'deprecated',
);
}
protected function defineReturnType() {
return 'dict<string, any>';
}
protected function defineErrorTypes() {
return array(
'ERR-BAD-VERSION' => pht(
'Client/server version mismatch. Upgrade your server or downgrade '.
'your client.'),
'NEW-ARC-VERSION' => pht(
'Client/server version mismatch. Upgrade your client.'),
'ERR-UNKNOWN-CLIENT' => pht('Client is unknown.'),
'ERR-INVALID-USER' => pht(
'The username you are attempting to authenticate with is not valid.'),
'ERR-INVALID-CERTIFICATE' => pht(
'Your authentication certificate for this server is invalid.'),
'ERR-INVALID-TOKEN' => pht(
"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' => pht('This server requires authentication.'),
);
}
protected function execute(ConduitAPIRequest $request) {
$client = $request->getValue('client');
$client_version = (int)$request->getValue('clientVersion');
$client_description = (string)$request->getValue('clientDescription');
$client_description = id(new PhutilUTF8StringTruncator())
->setMaximumBytes(255)
->truncateString($client_description);
$username = (string)$request->getValue('user');
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(
pht(
"Your '%s' client version is '%d', which is newer than the ".
"server version, '%d'. Upgrade your server.",
'arc',
$client_version,
$server_version));
} else {
$ex = new ConduitException('NEW-ARC-VERSION');
$ex->setErrorDescription(
pht(
'A new version of arc is available! You need to upgrade '.
'to connect to this server (you are running version '.
'%d, the server is running version %d).',
$client_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) > $threshold) {
throw id(new ConduitException('ERR-INVALID-TOKEN'))
->setErrorDescription(
pht(
'The request you submitted is signed with a timestamp, but that '.
'timestamp is not within %s of the current time. The '.
'signed timestamp is %s (%s), and the current server time is '.
'%s (%s). This is a difference of %s seconds, but the '.
'timestamp must differ from the server time by no more than '.
'%s seconds. Your client or server clock may not be set '.
'correctly.',
phutil_format_relative_time($threshold),
$token,
date('r', $token),
$now,
date('r', $now),
($token - $now),
$threshold));
}
$valid = sha1($token.$user->getConduitCertificate());
if (!phutil_hashes_are_identical($valid, $signature)) {
throw new ConduitException('ERR-INVALID-CERTIFICATE');
}
$session_key = id(new PhabricatorAuthSessionEngine())->establishSession(
PhabricatorAuthSession::TYPE_CONDUIT,
$user->getPHID(),
$partial = false);
} else {
throw new ConduitException('ERR-NO-CERTIFICATE');
}
return array(
'connectionID' => mt_rand(),
'sessionKey' => $session_key,
'userPHID' => $user->getPHID(),
);
}
}

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