public function testRemoteWebResource()
{
$map = array('http://example.com/' => true, 'derp://example.com/' => false, 'javascript:alert(1)' => false);
foreach ($map as $uri => $expect) {
$this->assertEqual($expect, PhabricatorEnv::isValidRemoteWebResource($uri), "Valid remote resource: {$uri}");
}
}
public function render()
{
$account = $this->externalAccount;
$provider = $this->provider;
require_celerity_resource('auth-css');
$content = array();
$dispname = $account->getDisplayName();
$username = $account->getUsername();
$realname = $account->getRealName();
$use_name = null;
if (strlen($dispname)) {
$use_name = $dispname;
} else {
if (strlen($username) && strlen($realname)) {
$use_name = $username . ' (' . $realname . ')';
} else {
if (strlen($username)) {
$use_name = $username;
} else {
if (strlen($realname)) {
$use_name = $realname;
} else {
$use_name = $account->getAccountID();
}
}
}
}
$content[] = phutil_tag('div', array('class' => 'auth-account-view-name'), $use_name);
if ($provider) {
$prov_name = pht('%s Account', $provider->getProviderName());
} else {
$prov_name = pht('"%s" Account', $account->getProviderType());
}
$content[] = phutil_tag('div', array('class' => 'auth-account-view-provider-name'), array($prov_name, " · ", $account->getAccountID()));
$account_uri = $account->getAccountURI();
if (strlen($account_uri)) {
// Make sure we don't link a "javascript:" URI if a user somehow
// managed to get one here.
if (PhabricatorEnv::isValidRemoteWebResource($account_uri)) {
$account_uri = phutil_tag('a', array('href' => $account_uri, 'target' => '_blank'), $account_uri);
}
$content[] = phutil_tag('div', array('class' => 'auth-account-view-account-uri'), $account_uri);
}
$image_uri = $account->getProfileImageFile()->getProfileThumbURI();
return phutil_tag('div', array('class' => 'auth-account-view', 'style' => 'background-image: url(' . $image_uri . ')'), $content);
}
/**
* See http://tools.ietf.org/html/draft-ietf-oauth-v2-23#section-3.1.2
* for details on what makes a given redirect URI "valid".
*/
public function validateRedirectURI(PhutilURI $uri)
{
if (PhabricatorEnv::isValidRemoteWebResource($uri)) {
if ($uri->getFragment()) {
return false;
}
if ($uri->getDomain()) {
return true;
}
}
return false;
}
/**
* Format a URI for use in a "Location:" header.
*
* Verifies that a URI redirects to the expected type of resource (local or
* remote) and formats it for use in a "Location:" header.
*
* The HTTP spec says "Location:" headers must use absolute URIs. Although
* browsers work with relative URIs, we return absolute URIs to avoid
* ambiguity. For example, Chrome interprets "Location: /\evil.com" to mean
* "perform a protocol-relative redirect to evil.com".
*
* @param string URI to redirect to.
* @param bool True if this URI identifies a remote resource.
* @return string URI for use in a "Location:" header.
*/
public static function getURIForRedirect($uri, $is_external)
{
$uri_object = new PhutilURI($uri);
if ($is_external) {
// If this is a remote resource it must have a domain set. This
// would also be caught below, but testing for it explicitly first allows
// us to raise a better error message.
if (!strlen($uri_object->getDomain())) {
throw new Exception(pht('Refusing to redirect to external URI "%s". This URI ' . 'is not fully qualified, and is missing a domain name. To ' . 'redirect to a local resource, remove the external flag.', (string) $uri));
}
// Check that it's a valid remote resource.
if (!PhabricatorEnv::isValidRemoteWebResource($uri)) {
throw new Exception(pht('Refusing to redirect to external URI "%s". This URI ' . 'is not a valid remote web resource.', (string) $uri));
}
} else {
// If this is a local resource, it must not have a domain set. This allows
// us to raise a better error message than the check below can.
if (strlen($uri_object->getDomain())) {
throw new Exception(pht('Refusing to redirect to local resource "%s". The URI has a ' . 'domain, but the redirect is not marked external. Mark ' . 'redirects as external to allow redirection off the local ' . 'domain.', (string) $uri));
}
// If this is a local resource, it must be a valid local resource.
if (!PhabricatorEnv::isValidLocalWebResource($uri)) {
throw new Exception(pht('Refusing to redirect to local resource "%s". This URI is not ' . 'formatted in a recognizable way.', (string) $uri));
}
// Fully qualify the result URI.
$uri = PhabricatorEnv::getURI((string) $uri);
}
return (string) $uri;
}