Issue 8714: Make redirects more secure
This commit is contained in:
Michael
parent
5630c9f132
commit
1ca804b638
1 changed files with 102 additions and 84 deletions
186
mod/redir.php
186
mod/redir.php
|
|
@ -31,6 +31,9 @@ use Friendica\Util\Network;
|
||||||
use Friendica\Util\Strings;
|
use Friendica\Util\Strings;
|
||||||
|
|
||||||
function redir_init(App $a) {
|
function redir_init(App $a) {
|
||||||
|
if (!Session::isAuthenticated()) {
|
||||||
|
throw new \Friendica\Network\HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
|
||||||
|
}
|
||||||
|
|
||||||
$url = $_GET['url'] ?? '';
|
$url = $_GET['url'] ?? '';
|
||||||
$quiet = !empty($_GET['quiet']) ? '&quiet=1' : '';
|
$quiet = !empty($_GET['quiet']) ? '&quiet=1' : '';
|
||||||
|
|
@ -44,102 +47,105 @@ function redir_init(App $a) {
|
||||||
// Try magic auth before the legacy stuff
|
// Try magic auth before the legacy stuff
|
||||||
redir_magic($a, $cid, $url);
|
redir_magic($a, $cid, $url);
|
||||||
|
|
||||||
if (!empty($cid)) {
|
if (empty($cid)) {
|
||||||
$fields = ['id', 'uid', 'nurl', 'url', 'addr', 'name', 'network', 'poll', 'issued-id', 'dfrn-id', 'duplex', 'pending'];
|
throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
|
||||||
$contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => [0, local_user()]]);
|
}
|
||||||
if (!DBA::isResult($contact)) {
|
|
||||||
notice(DI::l10n()->t('Contact not found.'));
|
$fields = ['id', 'uid', 'nurl', 'url', 'addr', 'name', 'network', 'poll', 'issued-id', 'dfrn-id', 'duplex', 'pending'];
|
||||||
DI::baseUrl()->redirect();
|
$contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => [0, local_user()]]);
|
||||||
|
if (!DBA::isResult($contact)) {
|
||||||
|
throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
|
||||||
|
}
|
||||||
|
|
||||||
|
$contact_url = $contact['url'];
|
||||||
|
|
||||||
|
if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
|
||||||
|
// Local user is already authenticated.
|
||||||
|
redir_check_url($contact_url, $url);
|
||||||
|
$a->redirect($url ?: $contact_url);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ($contact['uid'] == 0 && local_user()) {
|
||||||
|
// Let's have a look if there is an established connection
|
||||||
|
// between the public contact we have found and the local user.
|
||||||
|
$contact = DBA::selectFirst('contact', $fields, ['nurl' => $contact['nurl'], 'uid' => local_user()]);
|
||||||
|
|
||||||
|
if (DBA::isResult($contact)) {
|
||||||
|
$cid = $contact['id'];
|
||||||
}
|
}
|
||||||
|
|
||||||
$contact_url = $contact['url'];
|
if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
|
||||||
|
// Local user is already authenticated.
|
||||||
|
redir_check_url($contact_url, $url);
|
||||||
|
$target_url = $url ?: $contact_url;
|
||||||
|
Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
|
||||||
|
$a->redirect($target_url);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
if (!Session::isAuthenticated() // Visitors (not logged in or not remotes) can't authenticate.
|
if (remote_user()) {
|
||||||
|| (!empty($a->contact['id']) && $a->contact['id'] == $cid)) // Local user is already authenticated.
|
$host = substr(DI::baseUrl()->getUrlPath() . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : ''), strpos(DI::baseUrl()->getUrlPath(), '://') + 3);
|
||||||
{
|
$remotehost = substr($contact['addr'], strpos($contact['addr'], '@') + 1);
|
||||||
$a->redirect($url ?: $contact_url);
|
|
||||||
|
// On a local instance we have to check if the local user has already authenticated
|
||||||
|
// with the local contact. Otherwise the local user would ask the local contact
|
||||||
|
// for authentification everytime he/she is visiting a profile page of the local
|
||||||
|
// contact.
|
||||||
|
if (($host == $remotehost) && (Session::getRemoteContactID(Session::get('visitor_visiting')) == Session::get('visitor_id'))) {
|
||||||
|
// Remote user is already authenticated.
|
||||||
|
redir_check_url($contact_url, $url);
|
||||||
|
$target_url = $url ?: $contact_url;
|
||||||
|
Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
|
||||||
|
$a->redirect($target_url);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Doing remote auth with dfrn.
|
||||||
|
if (local_user() && (!empty($contact['dfrn-id']) || !empty($contact['issued-id'])) && empty($contact['pending'])) {
|
||||||
|
$dfrn_id = $orig_id = (($contact['issued-id']) ? $contact['issued-id'] : $contact['dfrn-id']);
|
||||||
|
|
||||||
|
if ($contact['duplex'] && $contact['issued-id']) {
|
||||||
|
$orig_id = $contact['issued-id'];
|
||||||
|
$dfrn_id = '1:' . $orig_id;
|
||||||
|
}
|
||||||
|
if ($contact['duplex'] && $contact['dfrn-id']) {
|
||||||
|
$orig_id = $contact['dfrn-id'];
|
||||||
|
$dfrn_id = '0:' . $orig_id;
|
||||||
}
|
}
|
||||||
|
|
||||||
if ($contact['uid'] == 0 && local_user()) {
|
$sec = Strings::getRandomHex();
|
||||||
// Let's have a look if there is an established connection
|
|
||||||
// between the public contact we have found and the local user.
|
|
||||||
$contact = DBA::selectFirst('contact', $fields, ['nurl' => $contact['nurl'], 'uid' => local_user()]);
|
|
||||||
|
|
||||||
if (DBA::isResult($contact)) {
|
$fields = ['uid' => local_user(), 'cid' => $cid, 'dfrn_id' => $dfrn_id,
|
||||||
$cid = $contact['id'];
|
'sec' => $sec, 'expire' => time() + 45];
|
||||||
}
|
DBA::insert('profile_check', $fields);
|
||||||
|
|
||||||
if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
|
Logger::log('mod_redir: ' . $contact['name'] . ' ' . $sec, Logger::DEBUG);
|
||||||
// Local user is already authenticated.
|
|
||||||
$target_url = $url ?: $contact_url;
|
|
||||||
Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
|
|
||||||
$a->redirect($target_url);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (remote_user()) {
|
$dest = (!empty($url) ? '&destination_url=' . $url : '');
|
||||||
$host = substr(DI::baseUrl()->getUrlPath() . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : ''), strpos(DI::baseUrl()->getUrlPath(), '://') + 3);
|
|
||||||
$remotehost = substr($contact['addr'], strpos($contact['addr'], '@') + 1);
|
|
||||||
|
|
||||||
// On a local instance we have to check if the local user has already authenticated
|
System::externalRedirect($contact['poll'] . '?dfrn_id=' . $dfrn_id
|
||||||
// with the local contact. Otherwise the local user would ask the local contact
|
. '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest . $quiet);
|
||||||
// for authentification everytime he/she is visiting a profile page of the local
|
|
||||||
// contact.
|
|
||||||
if (($host == $remotehost) && (Session::getRemoteContactID(Session::get('visitor_visiting')) == Session::get('visitor_id'))) {
|
|
||||||
// Remote user is already authenticated.
|
|
||||||
$target_url = $url ?: $contact_url;
|
|
||||||
Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
|
|
||||||
$a->redirect($target_url);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Doing remote auth with dfrn.
|
|
||||||
if (local_user() && (!empty($contact['dfrn-id']) || !empty($contact['issued-id'])) && empty($contact['pending'])) {
|
|
||||||
$dfrn_id = $orig_id = (($contact['issued-id']) ? $contact['issued-id'] : $contact['dfrn-id']);
|
|
||||||
|
|
||||||
if ($contact['duplex'] && $contact['issued-id']) {
|
|
||||||
$orig_id = $contact['issued-id'];
|
|
||||||
$dfrn_id = '1:' . $orig_id;
|
|
||||||
}
|
|
||||||
if ($contact['duplex'] && $contact['dfrn-id']) {
|
|
||||||
$orig_id = $contact['dfrn-id'];
|
|
||||||
$dfrn_id = '0:' . $orig_id;
|
|
||||||
}
|
|
||||||
|
|
||||||
$sec = Strings::getRandomHex();
|
|
||||||
|
|
||||||
$fields = ['uid' => local_user(), 'cid' => $cid, 'dfrn_id' => $dfrn_id,
|
|
||||||
'sec' => $sec, 'expire' => time() + 45];
|
|
||||||
DBA::insert('profile_check', $fields);
|
|
||||||
|
|
||||||
Logger::log('mod_redir: ' . $contact['name'] . ' ' . $sec, Logger::DEBUG);
|
|
||||||
|
|
||||||
$dest = (!empty($url) ? '&destination_url=' . $url : '');
|
|
||||||
|
|
||||||
System::externalRedirect($contact['poll'] . '?dfrn_id=' . $dfrn_id
|
|
||||||
. '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest . $quiet);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
redir_check_url($contact_url, $url);
|
||||||
$url = $url ?: $contact_url;
|
$url = $url ?: $contact_url;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (empty($url)) {
|
||||||
|
throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
|
||||||
|
}
|
||||||
|
|
||||||
// If we don't have a connected contact, redirect with
|
// If we don't have a connected contact, redirect with
|
||||||
// the 'zrl' parameter.
|
// the 'zrl' parameter.
|
||||||
if (!empty($url)) {
|
$my_profile = Profile::getMyURL();
|
||||||
$my_profile = Profile::getMyURL();
|
|
||||||
|
|
||||||
if (!empty($my_profile) && !Strings::compareLink($my_profile, $url)) {
|
if (!empty($my_profile) && !Strings::compareLink($my_profile, $url)) {
|
||||||
$separator = strpos($url, '?') ? '&' : '?';
|
$separator = strpos($url, '?') ? '&' : '?';
|
||||||
|
|
||||||
$url .= $separator . 'zrl=' . urlencode($my_profile);
|
$url .= $separator . 'zrl=' . urlencode($my_profile);
|
||||||
}
|
|
||||||
|
|
||||||
Logger::log('redirecting to ' . $url, Logger::DEBUG);
|
|
||||||
$a->redirect($url);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
notice(DI::l10n()->t('Contact not found.'));
|
Logger::log('redirecting to ' . $url, Logger::DEBUG);
|
||||||
DI::baseUrl()->redirect();
|
$a->redirect($url);
|
||||||
}
|
}
|
||||||
|
|
||||||
function redir_magic($a, $cid, $url)
|
function redir_magic($a, $cid, $url)
|
||||||
|
|
@ -152,15 +158,10 @@ function redir_magic($a, $cid, $url)
|
||||||
$contact = DBA::selectFirst('contact', ['url'], ['id' => $cid]);
|
$contact = DBA::selectFirst('contact', ['url'], ['id' => $cid]);
|
||||||
if (!DBA::isResult($contact)) {
|
if (!DBA::isResult($contact)) {
|
||||||
Logger::info('Contact not found', ['id' => $cid]);
|
Logger::info('Contact not found', ['id' => $cid]);
|
||||||
// Shouldn't happen under normal conditions
|
throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
|
||||||
notice(DI::l10n()->t('Contact not found.'));
|
|
||||||
if (!empty($url)) {
|
|
||||||
System::externalRedirect($url);
|
|
||||||
} else {
|
|
||||||
DI::baseUrl()->redirect();
|
|
||||||
}
|
|
||||||
} else {
|
} else {
|
||||||
$contact_url = $contact['url'];
|
$contact_url = $contact['url'];
|
||||||
|
redir_check_url($contact_url, $url);
|
||||||
$target_url = $url ?: $contact_url;
|
$target_url = $url ?: $contact_url;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -184,3 +185,20 @@ function redir_magic($a, $cid, $url)
|
||||||
Logger::info('No magic for contact', ['contact' => $contact_url]);
|
Logger::info('No magic for contact', ['contact' => $contact_url]);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
function redir_check_url(string $contact_url, string $url)
|
||||||
|
{
|
||||||
|
if (empty($contact_url) || empty($url)) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
$url_host = parse_url($url, PHP_URL_HOST);
|
||||||
|
$contact_url_host = parse_url($contact_url, PHP_URL_HOST);
|
||||||
|
|
||||||
|
if ($url_host == $contact_url_host) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
Logger::error('URL check host mismatch', ['contact' => $contact_url, 'url' => $url]);
|
||||||
|
throw new \Friendica\Network\HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue