Issue in FOGFTP.class.php and in Host.class.php



  • I detected several issues in those two files, mainly with error handling.

    SVN 3508

    • Issue 1 : FTP username containg backslashes are not supportet. That’s annoying when using a ftp user from Active Directory
    • Issue 2 : file FOGFTP.class.php, function connect : it currently returns either an objet ($this)or an array ($error). IMO it should return either an objet ($this)or a boolean (false)
    • Issue 3 : file Host.class.php, function checkIfExist : if the FTP connection goes wrong, the function returns true. ie : it can’t connect to the FTP, so it can’t check if the dir exists, but the function still returns true. Odd !

    Thank you in advance for checking this.


  • Senior Developer

    Well I added the stripslashes to the FOGFTP and it is committed.

    I’m going to solve this thread unless you see another issue.



  • @Tom-Elliott
    With stripslashes, the username looks like this : ad\ftpfog
    With nothing, the username looks like this : ad\ftpfog
    With addslashes, the username looks like this : ad\\ftpfog


  • Senior Developer

    @glefebvr So rather than add slashes you are using stripslashes?

    Wouldn’t that pose more of an issue?

    If your username is \someDomain\alfred, wouldn’t strip slashes make it become someDomainalfred?



  • Dear Tom,

    Sorry for the delay between my posts. I don’t have much time to test FOG.

    Concerning issue 1, I think (and tried) that addslashes is not the solution : now I have 4 backslahes in front of my username. I tried to replace addslashes with stripslashes and this resolves my problem.



  • Thank you very much for the quick answer and quick resolution of issue n° 1

    To explain with more details why I adressed those issues (I should have done that before) :

    • I uploaded an image to FOG
    • when I wanted to download it on an another computer I receveid the following message : “Failed to create deployment tasking for the following hosts You must first upload an image to create a download task”
    • So I decided to check the code and noticed that the FTP connection error was never treated, or at least that it was never presented to me.
    • The function “FOGFTP->connect()” always returns a value that is considered as true : either a non empty string (not an array as I was saying before) or an object
    • Then, the function $this->FOGFTP->chdir() is called and it has no error handling, so the error is silently dropped
    • Finally, the function $this->FOGFTP->close() is called and it has no error handling, so the error is silently dropped

    That’s how I noticed that a user containing a backslash was problematic


  • Senior Developer

    3516 Should, attempt, address the username issue.


  • Senior Developer

    @glefebvr
    Issue 1: By the use of an addslashes function on the username this may be simple to correct, but it’s just speculation.

    Issue 2: This is to be expected. The $error isn’t a boolean result. The idea of passing the error back is so we can print the error information to the screen to help ease/assist in the debugging/issue tracking. If we only return a false statement, troubleshooting what the problem is becomes FAR more difficult and nothing more than a guessing game.

    Issue 3: I’ll take a look, but the “return” is not always true, as if any of the ftp functions fail, it will throw it’s own error, thus resulting in that function not returning true.


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