<?php
/* Required libraries */
$TOPDIR = '..';
require_once "$TOPDIR/lib/functions.php";
require_once "$TOPDIR/lib/jsonwrapper.php";

/**
 * Issue an xCAT command (only for z)
 *
 * @param $cmd     The xCAT command
 * @param $tgt     The target node or group
 * @param $args    The xCAT command arguments, separated by semicolons
 * @return The xCAT response.  Replies are in the form of JSON
 */
if (isset($_GET["cmd"])) {
    // HTTP GET requests
    $cmd = $_GET["cmd"];
    $tgt = $_GET["tgt"];
    $args = $_GET["args"];

    // Attachments are put here
    $att = $_GET["att"];

    // Special messages put here
    $msg = $_GET["msg"];

    // If no $tgt is given, set $tgt to NULL
    if (!$tgt) {
        $tgt = NULL;
    }

    // If no $args is given, set $args to NULL
    if (!$args) {
        $args = NULL;
    }

    // If no $msg is given, set $msg to NULL
    if (!$msg) {
        $msg = NULL;
    }

    // If no $att is given, set $att to NULL
    if (!$att) {
        $att = NULL;
    }

    // If $args contains multiple arguments, split it into an array
    // Separators used are: || or ;
	if (strpos($args, "||")) {
        // Split the arguments into an array
        $arr = array();
        $arr = explode("||", $args);
    } else if (strpos($args, ";")) {
        // Split the arguments into an array
        $arr = array();
        $arr = explode(";", $args);
    } else {
        $arr = array($args);
    }

    $rsp = array();

    // Replace user entry
    if (strncasecmp($cmd, "chvm", 4) == 0 && strncasecmp($arr[0], "--replacevs", 11) == 0) {
        // Directory /var/tmp permissions = 777
        // You can write anything to that directory
        $userEntry = "/var/tmp/$tgt.txt";
        $handle = fopen($userEntry, 'w') or die("Cannot open $userEntry");
        fwrite($handle, $att);
        fclose($handle);

        // CLI command: chvm gpok249 --replacevs /tmp/dirEntry.txt
        // Replace user entry
        array_push($arr, $userEntry);
        $xml = docmd($cmd, $tgt, $arr, NULL);
        foreach ($xml->children() as $child) {
            foreach ($child->children() as $data) {
                $data = str_replace(":|:", "\n", $data);
                array_push($rsp, "$data");
            }
        }
    }

    // Create virtual server
    else if (strncasecmp($cmd, "mkvm", 4) == 0) {
        // Directory /var/tmp permissions = 777
        // You can write anything to that directory
        $userEntry = "/var/tmp/$tgt.txt";
        $handle = fopen($userEntry, 'w') or die("Cannot open $userEntry");
        fwrite($handle, $att);
        fclose($handle);

        // CLI command: mkvm gpok3 /tmp/gpok3.txt
        // Create user entry
        array_unshift($arr, $userEntry);
        $xml = docmd($cmd, $tgt, $arr, NULL);
        foreach ($xml->children() as $child) {
            foreach ($child->children() as $data) {
                $data = str_replace(":|:", "\n", $data);
                array_push($rsp, "$data");
            }
        }
    }

    // Run shell script
    // This is a typical command used by all platforms.  It is put here because
    // most of the code needed are already here
    else if (strncasecmp($cmd, "xdsh", 4) == 0) {
        // Directory /var/tmp permissions = 777
        // You can write anything to that directory
        $msgArgs = explode(";", $msg);
        $inst = str_replace("out=scriptStatusBar", "", $msgArgs[0]);
        $script = "/var/tmp/script$inst.sh";

        // Write to file
        $handle = fopen($script, 'w') or die("Cannot open $script");
        fwrite($handle, $att);
        fclose($handle);

        // Change it to executable
        chmod($script, 0777);

        // CLI command: xdsh gpok3 -e /var/tmp/gpok3.sh
        // Create user entry
        array_push($arr, $script);
        $xml = docmd($cmd, $tgt, $arr, NULL);
        foreach ($xml->children() as $child) {
            foreach ($child->children() as $data) {
                $data = str_replace(":|:", "\n", $data);
                array_push($rsp, "$data");
            }
        }

        // Remove this file
        unlink($script);
    }

    // Reply in the form of JSON
    $rtn = array("rsp" => $rsp, "msg" => $msg);
    echo json_encode($rtn);
}
?>