<?php
/* Required libraries */
$TOPDIR = '..';
require_once "$TOPDIR/lib/functions.php";
require_once "$TOPDIR/lib/jsonwrapper.php";

/**
 * Issue a xCAT command, e.g. rinv gpok123 all
 * This will handle most commands.  If not, you can create your own .php.
 * Look at zCmd.php for an example.
 *
 * @param    $cmd   The xCAT command
 * @param    $tgt   The target node or group
 * @param    $args  The xCAT command arguments, separated by semicolons
 * @param    $opts    The xCAT command options, separated by semicolons
 * @return   The xCAT response.  Replies are in the form of JSON
 */
if (isset($_GET["cmd"])) {
    // HTTP GET requests
    $cmd = $_GET["cmd"];
    $tgt = $_GET["tgt"];
    $args = $_GET["args"];

    // File contents in case of file write
    if (isset($_GET["cont"])) {
        $cont = $_GET["cont"];
    }

    // Special messages put here
    // This gets sent back to the AJAX request as is.
    $msg = $_GET["msg"];

    // If no $tgt is given, set $tgt to NULL
    if (!$tgt) {
        $tgt = NULL;
    }

    // If no $msg is given, set $msg to NULL
    if (!$msg) {
        $msg = NULL;
    }

    // If no $args are given, set $args_array to NULL
    // Separators used are: || or ;
    $args_array = array();
    if ($args) {
        // If $args contains multiple arguments, split it into an array
        if (strpos($args, "||")) {
            // Split the arguments into an array
            $args_array = array();
            $args_array = explode("||", $args);
        } else if (strpos($args, ";")) {
            // Split the arguments into an array
            $args_array = array();
            $args_array = explode(";", $args);
        } else {
            $args_array = array($args);
        }
    }

    // If no $opts are given, set $opts_array to NULL
    $opts_array = array();
    if (isset($_GET["opts"])) {
        $opts = $_GET["opts"];

        // If $args contains multiple arguments, split it into an array
        if (strpos($opts, "|")) {
            // Split the arguments into an array
            $opts_array = array();
            $opts_array = explode("|", $opts);
        } if (strpos($opts, ";")) {
            // Split the arguments into an array
            $opts_array = array();
            $opts_array = explode(";", $opts);
        } else {
            $opts_array = array($opts);
        }
    }
    
    // Time needed to update /etc/hosts
    if (strncasecmp($cmd, "makehosts", 9) == 0) {
        sleep(5);
    }

    // Submit request and get response
    $xml = docmd($cmd, $tgt, $args_array, $opts_array);
    // If the output is flushed, do not return output in JSON
    if (in_array("flush", $opts_array)) {
        return;
    }

    $rsp = array();

    // webrun pping and gangliastatus output needs special handling
    if (strncasecmp($cmd, "webrun", 6) == 0 && (stristr($args, "pping") || stristr($args, "gangliastatus") || stristr($args, "chtab"))) {
        $rsp = extractWebrun($xml);
    }
    // nodels output needs special handling
    else if (strncasecmp($cmd, "nodels", 6) == 0) {
        // Handle the output the same way as webrun
        $rsp = extractNodels($xml);
    }
    // extnoderange output needs special handling
    // This command gets the nodes and groups
    else if (strncasecmp($cmd, "extnoderange", 12) == 0) {
        $rsp = extractExtnoderange($xml);
    }
    // Write contents to file
    else if (strncasecmp($cmd, "write", 4) == 0) {
        // Directory should be /var/opt/xcat/profiles
        // You can write anything to that directory
        $file = "$tgt";
        $handle = fopen($file, 'w') or die("Cannot open $file");
        fwrite($handle, $cont);
        fclose($handle);

        $rsp = "Directory entry written to $file";
    }
    // Handle the typical output
    else {
        foreach ($xml->children() as $child) {
            foreach ($child->children() as $data) {
                if($data->name) {
                    $node = $data->name;

                    if ($data->data->contents) {
                        $cont = $data->data->contents;
                    } else {
                        $cont = $data->data;
                    }

                    if ($data->data->desc) {
                        $cont = $data->data->desc . ": " . $cont;
                    }

                    $cont = str_replace(":|:", "\n", $cont);
                    array_push($rsp, "$node: $cont");
                } else if (strlen("$data") > 2) {
                    $data = str_replace(":|:", "\n", $data);
                    array_push($rsp, "$data");
                }
            }
        }
    }

    // Reply in the form of JSON
    $rtn = array("rsp" => $rsp, "msg" => $msg);
    echo json_encode($rtn);
}

/**
 * Extract the output for a webrun command
 *
 * @param    $xml    The XML output from docmd()
 * @return An array containing the output
 */
function extractWebrun($xml) {
    $rsp = array();
    $i = 0;

    // Extract data returned
    foreach($xml->children() as $nodes){
        foreach($nodes->children() as $node){
            // Get the node name
            $name = $node->name;

            // Get the content
            $status = $node->data;
            $status = str_replace(":|:", "\n", $status);

            // Add to return array
            $rsp[$i] = array("$name", "$status");
            $i++;
        }
    }

    return $rsp;
}

/**
 * Extract the output for a nodels command
 *
 * @param    $xml    The XML output from docmd()
 * @return An array containing the output
 */
function extractNodels($xml) {
    $rsp = array();
    $i = 0;

    // Extract data returned
    foreach($xml->children() as $nodes){
        foreach($nodes->children() as $node){
            // Get the node name
            $name = $node->name;
            // Get the content
            $status = $node->data->contents;
            $status = str_replace(":|:", "\n", $status);

            $description = $node->data->desc;
            // Add to return array
            $rsp[$i] = array("$name", "$status", "$description");
            $i++;
        }
    }

    return $rsp;
}

/**
 * Extract the output for a extnoderange command
 *
 * @param    $xml    The XML output from docmd()
 * @return The nodes and groups
 */
function extractExtnoderange($xml) {
    $rsp = array();

    // Extract data returned
    foreach ($xml->xcatresponse->intersectinggroups as $group) {
        array_push($rsp, "$group");
    }

    return $rsp;
}
?>