Debian Etch, Ispconfig (current), PHP5 socket_create problem..

Discussion in 'General' started by LeoXavior, May 17, 2007.

  1. LeoXavior

    LeoXavior New Member

    I've been trying to get socket_create to use type SOCK_RAW to work, my environment has it's users chrooted but it seems CLI needs to be run as root from what i've read in user responces here:

    Which is causing these problems:
    Warning: socket_create() [function.socket-create]: Unable to create socket [1]: Operation not permitted in /var/www/web1/web/ping.php on line 46
    Warning: socket_set_option() expects parameter 1 to be resource, boolean given in /var/www/web1/web/ping.php on line 49
    Server Details:
    ISPConfig version: 2.2.12
    Apache/2.2.3 (Debian) PHP/5.2.0-8+etch3 mod_ssl/2.2.3 OpenSSL/0.9.8c

    socket create example:
    /* create the socket, the last '1' denotes ICMP */   
        $socket = socket_create(AF_INET, SOCK_RAW, 1);
    Notice im attempting to use SOCK_RAW here, I beleive this is what is causing the problem.

    Any idea's on correcting this?

    I'm playing with one example of using the function: posix_seteuid to change to different user accounts to test things, trying www-data etc.

    *Update: changing the uid via posix_setuid, doesn't seem to help.
    Last edited: May 17, 2007
  2. LeoXavior

    LeoXavior New Member

    This is the type of code im trying to execute a ping type function:
    function ping($host) {
        $package = "\x08\x00\x19\x2f\x00\x00\x00\x00\x70\x69\x6e\x67";
        /* create the socket, the last '1' denotes ICMP */   
        $socket = socket_create(AF_INET, SOCK_RAW, 1);
        /* set socket receive timeout to 1 second */
        socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array("sec" => 1, "usec" => 0));
        /* connect to socket */
        socket_connect($socket, $host, null);
        /* record start time */
        list($start_usec, $start_sec) = explode(" ", microtime());
        $start_time = ((float) $start_usec + (float) $start_sec);
        socket_send($socket, $package, strlen($package), 0);
        if(@socket_read($socket, 255)) {
            list($end_usec, $end_sec) = explode(" ", microtime());
            $end_time = ((float) $end_usec + (float) $end_sec);
            $total_time = $end_time - $start_time;
            return $total_time;
        } else {
            return false;
    echo ping('');
  3. till

    till Super Moderator Staff Member ISPConfig Developer

    Do you have safemode enabled in your php.ini or are the socket functions disallowed in your php.ini?

    There is a restriction in linux that prevents users except from root to create sockets below a specific limit, but as far as I know, this limit is only for server sockets and not client sockets.
  4. LeoXavior

    LeoXavior New Member

    Safe mode is off.
    Basically unchanged php.ini settings from default, I just edited email info, file post limits, and turned magic quotes off completely.
    Thru ISPConfig everything is enabled but php safemode.

    On the site/manual it appears that the socket functions like what im refering to it suggests that you may need root priv's to use SOCK_RAW with socket_create.
    I'm at a loss of how to safely bypass this to be able to use any code similar to what I posted above.
    Last edited: May 19, 2007
  5. falko

    falko Super Moderator ISPConfig Developer

  6. LeoXavior

    LeoXavior New Member

    Can you verify that can work in a current ISPConfig setup..
    I tried that code that is what the mention is in the update footnote in my original post above..
    Still was failing with the same warning messages I tried these users:
    daemon (the default from the code)

    I also tried a user account I created thru ispconfig that had admin rights checked off.

    All failed.

    If someone could test some of the php code(the supplied above or from the links to the manaul) on a box they have running, and verify that they can get it working for sure in a ispconfig environment that would be a big help.
  7. till

    till Super Moderator Staff Member ISPConfig Developer

    There is nothing special in the way ISPConfig setups php. If you do not check the php safemode checkbox, php is configured with the values from your php.ini.

    The example in the php manual is a shell script and not a script to run in a webserver. the example is also a server socket, I guess what you want to have is a cliebt socket to ping something and not to act as ping server.
  8. LeoXavior

    LeoXavior New Member

    Yes, basically I want to be able to ping a set of servers every 10-30 minutes and store the ping time to keep track of uptimes as well as ping times to select fastest online server.

    I've played around with using fsockopen and other methods but I was interested in doing a proper icmp ping instead of tcp or udp.
    Which is why I was interested in getting the socket examples working as fsockopen won't work in this fasion.

    I could exec the ping executable and grep the results I suppose, but I was hoping to not have to use anything outside of php.
  9. falko

    falko Super Moderator ISPConfig Developer

    That's what I wanted to suggest right now... ;)

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