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utilities.php

<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004 Ian Berry                                            |
 |                                                                         |
 | This program is free software; you can redistribute it and/or           |
 | modify it under the terms of the GNU General Public License             |
 | as published by the Free Software Foundation; either version 2          |
 | of the License, or (at your option) any later version.                  |
 |                                                                         |
 | This program is distributed in the hope that it will be useful,         |
 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |
 | GNU General Public License for more details.                            |
 +-------------------------------------------------------------------------+
 | cacti: a php-based graphing solution                                    |
 +-------------------------------------------------------------------------+
 | Most of this code has been designed, written and is maintained by       |
 | Ian Berry. See about.php for specific developer credit. Any questions   |
 | or comments regarding this code should be directed to:                  |
 | - iberry@raxnet.net                                                     |
 +-------------------------------------------------------------------------+
 | - raXnet - http://www.raxnet.net/                                       |
 +-------------------------------------------------------------------------+
*/

include("./include/auth.php");
include_once("./lib/utility.php");

/* set default action */
if (!isset($_REQUEST["action"])) { $_REQUEST["action"] = ""; }

switch ($_REQUEST["action"]) {
      case 'clear_poller_cache':
            include_once("./include/top_header.php");

            /* obtain timeout settings */
            $max_execution = ini_get("max_execution_time");
            $max_memory = ini_get("memory_limit");

            ini_set("max_execution_time", "0");
            ini_set("memory_limit", "32M");

            repopulate_poller_cache();

            ini_set("max_execution_time", $max_execution);
            ini_set("memory_limit", $max_memory);

            utilities();
            utilities_view_poller_cache();

            include_once("./include/bottom_footer.php");
            break;
      case 'view_snmp_cache':
            include_once("./include/top_header.php");

            utilities();
            utilities_view_snmp_cache();

            include_once("./include/bottom_footer.php");
            break;
      case 'view_poller_cache':
            include_once("./include/top_header.php");

            utilities();
            utilities_view_poller_cache();

            include_once("./include/bottom_footer.php");
            break;
      case 'view_logfile':
            include_once("./include/top_header.php");

            utilities();
            utilities_view_logfile();

            include_once("./include/bottom_footer.php");
            break;
      case 'clear_logfile':
            include_once("./include/top_header.php");

            utilities();

            utilities_clear_logfile();

            #utilities_view_logfile();


            include_once("./include/bottom_footer.php");
            break;
      default:
            include_once("./include/top_header.php");

            utilities();

            include_once("./include/bottom_footer.php");
            break;
}

/* -----------------------
    Utilities Functions
   ----------------------- */

function utilities_view_logfile() {
      global $colors;

      $logfile = read_config_option("path_cactilog");

      if ($logfile == "") {
            $logfile = "./log/rrd.log";
      }

      /* helps determine output color */
      $linecolor = True;

      /* read logfile into an array and display */
      if (file_exists($logfile)) {
            $logcontents = file($logfile);
      }else{
            touch($logfile);
            $logcontents = file($logfile);
      }

      $logcontents = array_reverse($logcontents);

      html_start_box("<strong>View Cacti Log File</strong> [" . sizeof($logcontents) . " Item" . ((sizeof($logcontents) > 0) ? "s" : "") . "]", "98%", $colors["header"], "3", "center", "");

      $i = 0;
      foreach ($logcontents as $item) {
            if (strpos($item,":") <> 0) {
                  if ($linecolor = True) {
                        $linecolor = False;
                  }else{
                        $linecolor = True;
                  }
            }

        $host_start = strpos($item, "Host[");
        $ds_start = strpos($item, "DS[");

        $new_item = "";

            if ((!$host_start) && (!$ds_start)) {
                  $new_item = $item;
            }else{
              if ($host_start) {
            $host_end = strpos($item, "]", $host_start);
                  $host_id = substr($item, $host_start+5, $host_end-($host_start+5));
                        $new_item = $new_item . substr($item, 0, $host_start + 5) . "<a href='host.php?action=edit&id=" . $host_id . "'>" . substr($item, $host_start + 5, $host_end-($host_start + 5)) . "</a>";
                        $item = substr($item, $host_end);
                  }

                  $ds_start = strpos($item, "DS[");
                  if ($ds_start) {
                        $ds_end = strpos($item, "]", $ds_start);
                        $ds_id = substr($item, $ds_start+3, $ds_end-($ds_start+3));
                        $new_item = $new_item . substr($item, 0, $ds_start + 3) . "<a href='data_sources.php?action=ds_edit&id=" . $ds_id . "'>" . substr($item, $ds_start + 3, $ds_end-($ds_start + 3)) . "</a>";
                        $item = substr($item, $ds_end);
                        $new_item = $new_item . $item;
                  }else{
                        $new_item = $new_item . $item;
                  }
            }

            switch ($linecolor) {
                  case True:
                        form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);
                        ?>
                        <td>
                        <?php print $new_item;?>
                        </td>
                        </tr>
                        <?php
                        break;
                  case False:
                        form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i); $i++;
                        ?>
                        <td>
                        <?php print $new_item;?>
                        </td>
                        </tr>
                        <?php
                        break;
            }
      }

      html_end_box();
}

function utilities_clear_logfile() {
      global $colors;

      $logfile = read_config_option("path_cactilog");

      if ($logfile == "") {
            $logfile = "./log/cacti.log";
      }

      html_start_box("<strong>Clear Cacti Log File</strong>", "98%", $colors["header"], "1", "center", "");
      if (file_exists($logfile)) {
            if (is_writable($logfile)) {
                  unlink($logfile);
                  touch($logfile);
                  print "<tr><td>Cacti Log File Cleared</td></tr>";
            }else{
                  print "<tr><td><font color='red'><b>Error: Unable to clear log, no write permissions.<b></font></td></tr>";
            }
      }else{
            print "<tr><td><font color='red'><b>Error: Unable to clear log, file does not exist.</b></font></td></tr>";
      }
      html_end_box();
}

function utilities_view_snmp_cache() {
      global $colors;

      $snmp_cache = db_fetch_assoc("select host_snmp_cache.*,
            host.description,
            snmp_query.name
            from (host_snmp_cache,snmp_query,host)
            where host_snmp_cache.host_id=host.id
            and host_snmp_cache.snmp_query_id=snmp_query.id
            order by host_snmp_cache.host_id,host_snmp_cache.snmp_query_id,host_snmp_cache.snmp_index");

      html_start_box("<strong>View SNMP Cache</strong> [" . sizeof($snmp_cache) . " Item" . ((sizeof($snmp_cache) > 0) ? "s" : "") . "]", "98%", $colors["header"], "3", "center", "");

      $i = 0;
      if (sizeof($snmp_cache) > 0) {
      foreach ($snmp_cache as $item) {
                  form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);
                  ?>
                        <td>
                              Host: <?php print $item["description"];?>, SNMP Query: <?php print $item["name"];?>
                        </td>
                  </tr>
                  <?php
                  form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);
                  ?>
                        <td>
                              Index: <?php print $item["snmp_index"];?>, Field Name: <?php print $item["field_name"];?>, Field Value: <?php print $item["field_value"];?>
                        </td>
                  </tr>
                  <?php
                  form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i); $i++;
                  ?>
                        <td>
                              OID: <?php print $item["oid"];?>
                        </td>
                  </tr>
                  <?php
      }
      }

      html_end_box();
}

function utilities_view_poller_cache() {
      global $colors;

      $poller_cache = db_fetch_assoc("select
            poller_item.*,
            data_template_data.name_cache,
            data_local.host_id
            from (poller_item,data_template_data,data_local)
            where poller_item.local_data_id=data_template_data.local_data_id
            and data_template_data.local_data_id=data_local.id");

      html_start_box("<strong>View Poller Cache</strong> [" . sizeof($poller_cache) . " Item" . ((sizeof($poller_cache) > 0) ? "s" : "") . "]", "98%", $colors["header"], "3", "center", "");

      $i = 0;
      if (sizeof($poller_cache) > 0) {
      foreach ($poller_cache as $item) {
            form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);
            ?>
                  <td>
                        Data Source: <?php print $item["name_cache"];?>
                  </td>
            </tr>
            <?php
            form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);
            ?>
                  <td>
                        RRD: <?php print $item["rrd_path"];?>
                  </td>
            </tr>
            <?php
            form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i); $i++;
            ?>
                  <td>
                        Action: <?php print $item["action"];?>, <?php print ((($item["action"] == "1") || ($item["action"] == "2")) ? "Script: " . $item["arg1"] : "OID: " . $item["arg1"] . " (Host: " . $item["hostname"] . ", Community: " . $item["snmp_community"] . ")");?>
                  </td>
            </tr>
            <?php
      }
      }

      html_end_box();
}

function utilities() {
      global $colors;

      html_start_box("<strong>Cacti System Utilities</strong>", "98%", $colors["header"], "3", "center", "");

      html_header(array("Poller Cache Administration"), 2);

      ?>
      <colgroup span="3">
            <col valign="top" width="20"></col>
            <col valign="top" width="10"></col>
      </colgroup>

      <tr bgcolor="#<?php print $colors["form_alternate1"];?>">
            <td class="textArea">
                  <p><a href='utilities.php?action=view_poller_cache'>View Poller Cache</a></p>
            </td>
            <td class="textArea">
                  <p>This is the data that is being passed to the poller each time it runs. This data is then in turn executed/interpreted and the results are fed into the rrd files for graphing or the database for display.</p>
            </td>
      </tr>
      <tr bgcolor="#<?php print $colors["form_alternate2"];?>">
            <td class="textArea">
                  <p><a href='utilities.php?action=view_snmp_cache'>View SNMP Cache</a></p>
            </td>
            <td class="textArea">
                  <p>The SNMP cache stores information gathered from SNMP queries. It is used by cacti to determine the OID to use when gathering information from an SNMP-enabled host.</p>
            </td>
      </tr>
      <tr bgcolor="#<?php print $colors["form_alternate1"];?>">
            <td class="textArea">
                  <p><a href='utilities.php?action=clear_poller_cache'>Clear Poller Cache</a></p>
            </td>
            <td class="textArea">
                  <p>The poller cache will be cleared and re-generated if you select this option. Sometimes host/data source data can get out of sync with the cache in which case it makes sense to clear the cache and start over.</p>
            </td>
      </tr>

      <?php html_header(array("System Log Administration"), 2);?>

      <tr bgcolor="#<?php print $colors["form_alternate1"];?>">
            <td class="textArea">
                  <p><a href='utilities.php?action=view_logfile'>View Cacti Log File</a></p>
            </td>
            <td class="textArea">
                  <p>The Cacti Log File stores statistic, error and other message depending on system settings.  This information can be used to identify problems with the poller and application.</p>
            </td>
      </tr>
      <tr bgcolor="#<?php print $colors["form_alternate2"];?>">
            <td class="textArea">
                  <p><a href='utilities.php?action=clear_logfile'>Clear Cacti Log File</a></p>
            </td>
            <td class="textArea">
                  <p>This action will reset the Cacti Log File.  Please note that if you are using the Syslog/Eventlog only, this action will have no effect.</p>
            </td>
      </tr>
      <?php

      html_end_box();
}

?>

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