get_context.php

<?php
/* $Id: get_context.php 2182 2010-01-07 16:00:54Z d_pocock $ */

include_once "./lib/functions.php";

$meta_designator = "Grid";
$cluster_designator = "Cluster Overview";

# Blocking malicious CGI input.
$view = isset($_GET["view"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["view"]) ) ) : NULL;
$mesh_first_metric = isset($_GET["mesh_first_metric"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["mesh_first_metric"]) ) ) : NULL;
$clustername = isset($_GET["c"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["c"]) ) ) : NULL;
$gridname = isset($_GET["G"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["G"]) ) ) : NULL;
if($case_sensitive_hostnames == 1) {
    $hostname = isset($_GET["h"]) ?
        escapeshellcmd( clean_string( rawurldecode($_GET["h"]) ) ) : NULL;
} else {
    $hostname = isset($_GET["h"]) ?
        strtolower( escapeshellcmd( clean_string( rawurldecode($_GET["h"]) ) ) ) : NULL;
}
$range = isset( $_GET["r"] ) && in_array($_GET["r"], array_keys( $time_ranges ) ) ?
	escapeshellcmd( rawurldecode($_GET["r"])) : NULL;
$metricname = isset($_GET["m"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["m"]) ) ) : NULL;
$metrictitle = isset($_GET["ti"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["ti"]) ) ) : NULL;
$sort = isset($_GET["s"]) ?
	escapeshellcmd( clean_string( rawurldecode($_GET["s"]) ) ) : NULL;

# Default value set in conf.php, Allow URL to overrride
if (isset($_GET["hc"]))
	$hostcols = clean_number($_GET["hc"]);
if (isset($_GET["mc"]))
	$metriccols = clean_number($_GET["mc"]);
# Flag, whether or not to show a list of hosts
$showhosts = isset($_GET["sh"]) ?
	clean_number( $_GET["sh"] ) : NULL;
# The 'p' variable specifies the verbosity level in the physical view.
$physical = isset($_GET["p"]) ?
	clean_number( $_GET["p"] ) : NULL;
$tree = isset($_GET["t"]) ?
	escapeshellcmd($_GET["t"] ) : NULL;
# A custom range value for job graphs, in -sec.
$jobrange = isset($_GET["jr"]) ?
	clean_number( $_GET["jr"] ) : NULL;
# A red vertical line for various events. Value specifies the event time.
$jobstart = isset($_GET["js"]) ?
	clean_number( $_GET["js"] ) : NULL;
# The direction we are travelling in the grid tree
$gridwalk = isset($_GET["gw"]) ?
	escapeshellcmd( clean_string( $_GET["gw"] ) ) : NULL;
# Size of the host graphs in the cluster view
$clustergraphsize = isset($_GET["z"]) && in_array( $_GET[ 'z' ], $graph_sizes_keys ) ?
    escapeshellcmd($_GET["z"]) : NULL;
# A stack of grid parents. Prefer a GET variable, default to cookie.
if (isset($_GET["gs"]) and $_GET["gs"])
    $gridstack = explode( ">", rawurldecode( $_GET["gs"] ) );
else if ( isset($_COOKIE['gs']) and $_COOKIE['gs'])
    $gridstack = explode( ">", $_COOKIE["gs"] );

if (isset($gridstack) and $gridstack) {
   foreach( $gridstack as $key=>$value )
      $gridstack[ $key ] = clean_string( $value );
}

# Assume we are the first grid visited in the tree if there is no gridwalk
# or gridstack is not well formed. Gridstack always has at least one element.
if ( !isset($gridstack) or !strstr($gridstack[0], "http://"))
    $initgrid = TRUE;

# Default values
if (!isset($hostcols) || !is_numeric($hostcols)) $hostcols = 4;
if (!isset($metriccols) || !is_numeric($metriccols)) $metriccols = 2;
if (!is_numeric($showhosts)) $showhosts = 1;

# Set context
if ($view == 'grid_overview')
   {
    $context = "grid_overview";
   }
elseif ($view == 'grid_mesh')
   {
    $context = "grid_mesh";
   }
elseif ($view == 'grid_hosts')
   {
    $context = "grid_hosts";
   }
elseif(!$clustername && !$hostname && isset($controlroom))
   {
      $context = "control";
   }
else if ($tree)
   {
      $context = "tree";
   }
else if(!$clustername and !$gridname and !$hostname)
   {
      $context = "grid_overview";
//      $context = "meta";
   }
else if($gridname)
   {
      $context = "grid";
   }
else if ($clustername and !$hostname and $physical)
   {
      $context = "physical";
   }
else if ($clustername and !$hostname and !$showhosts)
   {
      $context = "cluster-summary";
   }
else if($clustername and !$hostname)
   {
      $context = "cluster";
   }
else if($clustername and $hostname and $physical)
   {
      $context = "node";
   }
else if($clustername and $hostname)
   {
      $context = "host";
   }

if (!$range)
      $range = "$default_time_range";

$end = "N";

# $time_ranges defined in conf.php
if( $range == 'job' && isSet( $jobrange ) ) {
  $start = $jobrange;
} else if( isSet( $time_ranges[ $range ] ) ) {
  $start = $time_ranges[ $range ] * -1;
} else {
  $start = $time_ranges[ $default_time_range ] * -1;
}

if (!$metricname)
      $metricname = "$default_metric";

if (!$sort)
      $sort = "descending";

# Since cluster context do not have the option to sort "by hosts down" or
# "by hosts up", therefore change sort order to "descending" if previous
# sort order is either "by hosts down" or "by hosts up"
if ($context == "cluster") {
    if ($sort == "by hosts up" || $sort == "by hosts down") {
        $sort = "descending";
    }
}



# A hack for pre-2.5.0 ganglia data sources.
$always_constant = array(
   "swap_total"  => 1,
   "cpu_speed"   => 1,
   "swap_total"  => 1
);

$always_timestamp = array(
   "gmond_started" => 1,
   "reported"      => 1,
   "sys_clock"     => 1,
   "boottime"      => 1
);



# List of report graphs
$reports = array();
foreach ($reportArray as $reportName => $reportData) {
    $reports[$reportName] = 1;
}
$reports[$defaultReport] = $defaultReport;