YakumoLabs/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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14
lib/smb.php
View File

@@ -29,10 +29,18 @@ class OC_User_SMB extends OC_User_Backend{
$password=escapeshellarg($password);
$result=array();
$command=self::smbclient.' //'.$this->host.'/dummy -U'.$uidEscaped.'%'.$password;
$result=exec($command,$result);
if(substr($result,-strlen(self::loginError))==self::loginError) {
$lastline = exec($command, $output, $retval);
if ($retval === 127) {
OCP\Util::writeLog('user_external', 'ERROR: smbclient executable missing', OCP\Util::ERROR);
return false;
}else{
} else if (strpos($lastline, self::loginError) !== false) {
//normal login error
return false;
} else if ($retval != 0) {
//some other error
OCP\Util::writeLog('user_external', 'ERROR: smbclient error: ' . trim($lastline), OCP\Util::ERROR);
return false;
} else {
return $uid;
}
}