YakumoLabs/nextcloud-user_external
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user_external: Check if extensions are enabled before using them

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This patch checks if the relevant functionality is actually available
before using it for authentication:

1. check if function imap_open() exists before using it
2. check if smbclient executable exists during smb auth
3. check if ftp/ftps stream wrappers are registered before
   using them for auth

This fixes a crash (white page) that happens when using IMAP authentication
and the IMAP extension is not installed.
This commit is contained in:
Christian Weiske
2014-01-17 21:31:39 +01:00
parent 99b8dad9d1
commit cd05354aaf
3 changed files with 20 additions and 5 deletions
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7
lib/ftp.php
View File

@@ -18,7 +18,6 @@ class OC_User_FTP extends OC_User_Backend{
if($this->secure) {
$this->protocol.='s';
}
$this->protocol.='://';
}
/**
@@ -30,7 +29,11 @@ class OC_User_FTP extends OC_User_Backend{
* Check if the password is correct without logging in the user
*/
public function checkPassword($uid, $password) {
$url=$this->protocol.$uid.':'.$password.'@'.$this->host.'/';
if (false === array_search($this->protocol, stream_get_wrappers())) {
OCP\Util::writeLog('user_external', 'ERROR: Stream wrapper not available: ' . $this->protocol, OCP\Util::ERROR);
return false;
}
$url = sprintf('%s://%s:%s@%s/', $this->protocol, $uid, $password, $this->host);
$result=@opendir($url);
if(is_resource($result)) {
return $uid;