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data_sources.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");
include_once("./lib/api_graph.php");
include_once("./lib/api_data_source.php");
include_once("./lib/template.php");
include_once("./lib/html_form_template.php");
include_once("./lib/rrd.php");
include_once("./lib/data_query.php");

define("MAX_DISPLAY_PAGES", 21);

$ds_actions = array(
      1 => "Delete",
      2 => "Change Data Template",
      3 => "Change Host",
      4 => "Duplicate",
      5 => "Convert to Data Template",
      6 => "Enable",
      7 => "Disable"
      );

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

switch ($_REQUEST["action"]) {
      case 'save':
            form_save();

            break;
      case 'actions':
            form_actions();

            break;
      case 'rrd_add':
            ds_rrd_add();

            break;
      case 'rrd_remove':
            ds_rrd_remove();

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

            data_edit();

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

            header ("Location: data_sources.php");
            break;
      case 'ds_edit':
            include_once("./include/top_header.php");

            ds_edit();

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

            ds();

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

/* --------------------------
    The Save Function
   -------------------------- */

function form_save() {
      if ((isset($_POST["save_component_data_source_new"])) && (!empty($_POST["data_template_id"]))) {
            /* ================= input validation ================= */
            input_validate_input_number(get_request_var_post("host_id"));
            input_validate_input_number(get_request_var_post("data_template_id"));
            /* ==================================================== */

            $save["id"] = $_POST["local_data_id"];
            $save["data_template_id"] = $_POST["data_template_id"];
            $save["host_id"] = $_POST["host_id"];

            $local_data_id = sql_save($save, "data_local");

            change_data_template($local_data_id, $_POST["data_template_id"]);

            /* update the title cache */
            update_data_source_title_cache($local_data_id);

            /* update host data */
            if (!empty($_POST["host_id"])) {
                  push_out_host($_POST["host_id"], $local_data_id);
            }
      }

      if ((isset($_POST["save_component_data"])) && (!is_error_message())) {
            /* ================= input validation ================= */
            input_validate_input_number(get_request_var_post("data_template_data_id"));
            /* ==================================================== */

            /* ok, first pull out all 'input' values so we know how much to save */
            $input_fields = db_fetch_assoc("select
                  data_template_data.data_input_id,
                  data_local.host_id,
                  data_input_fields.id,
                  data_input_fields.input_output,
                  data_input_fields.data_name,
                  data_input_fields.regexp_match,
                  data_input_fields.allow_nulls,
                  data_input_fields.type_code
                  from data_template_data
                  left join data_input_fields on (data_input_fields.data_input_id=data_template_data.data_input_id)
                  left join data_local on (data_template_data.local_data_id=data_local.id)
                  where data_template_data.id=" . $_POST["data_template_data_id"] . "
                  and data_input_fields.input_output='in'");

            if (sizeof($input_fields) > 0) {
            foreach ($input_fields as $input_field) {
                  if (isset($_POST{"value_" . $input_field["id"]})) {
                        /* save the data into the 'data_input_data' table */
                        $form_value = $_POST{"value_" . $input_field["id"]};

                        /* we shouldn't enforce rules on fields the user cannot see (ie. templated ones) */
                        $is_templated = db_fetch_cell("select t_value from data_input_data where data_input_field_id=" . $input_field["id"] . " and data_template_data_id=" . db_fetch_cell("select local_data_template_data_id from data_template_data where id=" . $_POST["data_template_data_id"]));

                        if ($is_templated == "") {
                              $allow_nulls = true;
                        }elseif ($input_field["allow_nulls"] == "on") {
                              $allow_nulls = true;
                        }elseif (empty($input_field["allow_nulls"])) {
                              $allow_nulls = false;
                        }

                        /* run regexp match on input string */
                        $form_value = form_input_validate($form_value, "value_" . $input_field["id"], $input_field["regexp_match"], $allow_nulls, 3);

                        if (!is_error_message()) {
                              db_execute("replace into data_input_data (data_input_field_id,data_template_data_id,t_value,value) values
                                    (" . $input_field["id"] . "," . $_POST["data_template_data_id"] . ",'','$form_value')");
                        }
                  }
            }
            }
      }

      if ((isset($_POST["save_component_data_source"])) && (!is_error_message())) {
            /* ================= input validation ================= */
            input_validate_input_number(get_request_var_post("local_data_id"));
            input_validate_input_number(get_request_var_post("current_rrd"));
            input_validate_input_number(get_request_var_post("data_template_id"));
            input_validate_input_number(get_request_var_post("host_id"));
            /* ==================================================== */

            $save1["id"] = $_POST["local_data_id"];
            $save1["data_template_id"] = $_POST["data_template_id"];
            $save1["host_id"] = $_POST["host_id"];

            $save2["id"] = $_POST["data_template_data_id"];
            $save2["local_data_template_data_id"] = $_POST["local_data_template_data_id"];
            $save2["data_template_id"] = $_POST["data_template_id"];
            $save2["data_input_id"] = form_input_validate($_POST["data_input_id"], "data_input_id", "", true, 3);
            $save2["name"] = form_input_validate($_POST["name"], "name", "", false, 3);
            $save2["data_source_path"] = form_input_validate($_POST["data_source_path"], "data_source_path", "", true, 3);
            $save2["active"] = form_input_validate((isset($_POST["active"]) ? $_POST["active"] : ""), "active", "", true, 3);
            $save2["rrd_step"] = form_input_validate($_POST["rrd_step"], "rrd_step", "^[0-9]+$", false, 3);

            if (!is_error_message()) {
                  $local_data_id = sql_save($save1, "data_local");

                  $save2["local_data_id"] = $local_data_id;
                  $data_template_data_id = sql_save($save2, "data_template_data");

                  if ($data_template_data_id) {
                        raise_message(1);
                  }else{
                        raise_message(2);
                  }
            }

            if (!is_error_message()) {
                  /* if this is a new data source and a template has been selected, skip item creation this time
                  otherwise it throws off the templatate creation because of the NULL data */
                  if ((!empty($_POST["local_data_id"])) || (empty($_POST["data_template_id"]))) {
                        /* if no template was set before the save, there will be only one data source item to save;
                        otherwise there might be >1 */
                        if (empty($_POST["_data_template_id"])) {
                              $rrds[0]["id"] = $_POST["current_rrd"];
                        }else{
                              $rrds = db_fetch_assoc("select id from data_template_rrd where local_data_id=" . $_POST["local_data_id"]);
                        }

                        if (sizeof($rrds) > 0) {
                        foreach ($rrds as $rrd) {
                              if (empty($_POST["_data_template_id"])) {
                                    $name_modifier = "";
                              }else{
                                    $name_modifier = "_" . $rrd["id"];
                              }

                              $save3["id"] = $rrd["id"];
                              $save3["local_data_id"] = $local_data_id;
                              $save3["local_data_template_rrd_id"] = db_fetch_cell("select local_data_template_rrd_id from data_template_rrd where id=" . $rrd["id"]);
                              $save3["data_template_id"] = $_POST["data_template_id"];
                              $save3["rrd_maximum"] = form_input_validate($_POST["rrd_maximum$name_modifier"], "rrd_maximum$name_modifier", "^-?[0-9]+$", false, 3);
                              $save3["rrd_minimum"] = form_input_validate($_POST["rrd_minimum$name_modifier"], "rrd_minimum$name_modifier", "^-?[0-9]+$", false, 3);
                              $save3["rrd_heartbeat"] = form_input_validate($_POST["rrd_heartbeat$name_modifier"], "rrd_heartbeat$name_modifier", "^[0-9]+$", false, 3);
                              $save3["data_source_type_id"] = $_POST["data_source_type_id$name_modifier"];
                              $save3["data_source_name"] = form_input_validate($_POST["data_source_name$name_modifier"], "data_source_name$name_modifier", "^[a-zA-Z0-9_-]{1,19}$", false, 3);
                              $save3["data_input_field_id"] = form_input_validate((isset($_POST["data_input_field_id$name_modifier"]) ? $_POST["data_input_field_id$name_modifier"] : "0"), "data_input_field_id$name_modifier", "", true, 3);

                              $data_template_rrd_id = sql_save($save3, "data_template_rrd");

                              if ($data_template_rrd_id) {
                                    raise_message(1);
                              }else{
                                    raise_message(2);
                              }
                        }
                        }
                  }
            }

            if (!is_error_message()) {
                  if (!empty($_POST["rra_id"])) {
                        /* save entries in 'selected rras' field */
                        db_execute("delete from data_template_data_rra where data_template_data_id=$data_template_data_id");

                        for ($i=0; ($i < count($_POST["rra_id"])); $i++) {
                              /* ================= input validation ================= */
                              input_validate_input_number($_POST["rra_id"][$i]);
                              /* ==================================================== */

                              db_execute("insert into data_template_data_rra (rra_id,data_template_data_id)
                                    values (" . $_POST["rra_id"][$i] . ",$data_template_data_id)");
                        }
                  }

                  if ($_POST["data_template_id"] != $_POST["_data_template_id"]) {
                        /* update all necessary template information */
                        change_data_template($local_data_id, $_POST["data_template_id"]);
                  }elseif (!empty($_POST["data_template_id"])) {
                        update_data_source_data_query_cache($local_data_id);
                  }

                  if ($_POST["host_id"] != $_POST["_host_id"]) {
                        /* push out all necessary host information */
                        push_out_host($_POST["host_id"], $local_data_id);

                        /* reset current host for display purposes */
                        $_SESSION["sess_data_source_current_host_id"] = $_POST["host_id"];
                  }

                  /* if no data source path has been entered, generate one */
                  if (empty($_POST["data_source_path"])) {
                        generate_data_source_path($local_data_id);
                  }

                  /* update the title cache */
                  update_data_source_title_cache($local_data_id);
            }
      }

      /* update the poller cache last to make sure everything is fresh */
      if ((!is_error_message()) && (!empty($local_data_id))) {
            update_poller_cache($local_data_id, false);
      }

      if ((isset($_POST["save_component_data_source_new"])) && (empty($_POST["data_template_id"]))) {
            header("Location: data_sources.php?action=ds_edit&host_id=" . $_POST["host_id"] . "&new=1");
      }elseif ((is_error_message()) || ($_POST["data_template_id"] != $_POST["_data_template_id"]) || ($_POST["data_input_id"] != $_POST["_data_input_id"]) || ($_POST["host_id"] != $_POST["_host_id"])) {
            header("Location: data_sources.php?action=ds_edit&id=" . (empty($local_data_id) ? $_POST["local_data_id"] : $local_data_id) . "&host_id=" . $_POST["host_id"] . "&view_rrd=" . (isset($_POST["current_rrd"]) ? $_POST["current_rrd"] : "0"));
      }else{
            header("Location: data_sources.php");
      }
}

/* ------------------------
    The "actions" function
   ------------------------ */

function form_actions() {
      global $colors, $ds_actions;

      /* if we are to save this form, instead of display it */
      if (isset($_POST["selected_items"])) {
            $selected_items = unserialize(stripslashes($_POST["selected_items"]));

            if ($_POST["drp_action"] == "1") { /* delete */
                  if (!isset($_POST["delete_type"])) { $_POST["delete_type"] = 1; }

                  switch ($_POST["delete_type"]) {
                        case '2': /* delete all graph items tied to this data source */
                              $data_template_rrds = db_fetch_assoc("select id from data_template_rrd where " . array_to_sql_or($selected_items, "local_data_id"));

                              /* loop through each data source item */
                              if (sizeof($data_template_rrds) > 0) {
                                    foreach ($data_template_rrds as $item) {
                                          db_execute("delete from graph_templates_item where task_item_id=" . $item["id"] . " and local_graph_id > 0");
                                    }
                              }

                              break;
                        case '3': /* delete all graphs tied to this data source */
                              $graphs = db_fetch_assoc("select
                                    graph_templates_graph.local_graph_id
                                    from (data_template_rrd,graph_templates_item,graph_templates_graph)
                                    where graph_templates_item.task_item_id=data_template_rrd.id
                                    and graph_templates_item.local_graph_id=graph_templates_graph.local_graph_id
                                    and " . array_to_sql_or($selected_items, "data_template_rrd.local_data_id") . "
                                    and graph_templates_graph.local_graph_id > 0
                                    group by graph_templates_graph.local_graph_id");

                              if (sizeof($graphs) > 0) {
                                    foreach ($graphs as $graph) {
                                          api_graph_remove($graph["local_graph_id"]);
                                    }
                              }

                              break;
                        }

                        for ($i=0;($i<count($selected_items));$i++) {
                              /* ================= input validation ================= */
                              input_validate_input_number($selected_items[$i]);
                              /* ==================================================== */

                              api_data_source_remove($selected_items[$i]);
                        }
            }elseif ($_POST["drp_action"] == "2") { /* change graph template */
                  for ($i=0;($i<count($selected_items));$i++) {
                        /* ================= input validation ================= */
                        input_validate_input_number($selected_items[$i]);
                        input_validate_input_number(get_request_var_post("data_template_id"));
                        /* ==================================================== */

                        change_data_template($selected_items[$i], $_POST["data_template_id"]);
                  }
            }elseif ($_POST["drp_action"] == "3") { /* change host */
                  for ($i=0;($i<count($selected_items));$i++) {
                        /* ================= input validation ================= */
                        input_validate_input_number($selected_items[$i]);
                        input_validate_input_number(get_request_var_post("host_id"));
                        /* ==================================================== */

                        db_execute("update data_local set host_id=" . $_POST["host_id"] . " where id=" . $selected_items[$i]);
                        push_out_host($_POST["host_id"], $selected_items[$i]);
                        update_data_source_title_cache($selected_items[$i]);
                  }
            }elseif ($_POST["drp_action"] == "4") { /* duplicate */
                  for ($i=0;($i<count($selected_items));$i++) {
                        /* ================= input validation ================= */
                        input_validate_input_number($selected_items[$i]);
                        /* ==================================================== */

                        duplicate_data_source($selected_items[$i], 0, $_POST["title_format"]);
                  }
            }elseif ($_POST["drp_action"] == "5") { /* data source -> data template */
                  for ($i=0;($i<count($selected_items));$i++) {
                        /* ================= input validation ================= */
                        input_validate_input_number($selected_items[$i]);
                        /* ==================================================== */

                        data_source_to_data_template($selected_items[$i], $_POST["title_format"]);
                  }
            }elseif ($_POST["drp_action"] == "6") { /* data source enable */
                  for ($i=0;($i<count($selected_items));$i++) {
                        api_data_source_enable($selected_items[$i]);
                  }
            }elseif ($_POST["drp_action"] == "7") { /* data source disable */
                  for ($i=0;($i<count($selected_items));$i++) {
                        api_data_source_disable($selected_items[$i]);
                  }
            }

            header("Location: data_sources.php");
            exit;
      }

      /* setup some variables */
      $ds_list = ""; $i = 0;

      /* loop through each of the graphs selected on the previous page and get more info about them */
      while (list($var,$val) = each($_POST)) {
            if (ereg("^chk_([0-9]+)$", $var, $matches)) {
                  /* ================= input validation ================= */
                  input_validate_input_number($matches[1]);
                  /* ==================================================== */

                  $ds_list .= "<li>" . get_data_source_title($matches[1]) . "<br>";
                  $ds_array[$i] = $matches[1];
            }

            $i++;
      }

      include_once("./include/top_header.php");

      html_start_box("<strong>" . $ds_actions{$_POST["drp_action"]} . "</strong>", "60%", $colors["header_panel"], "3", "center", "");

      print "<form action='data_sources.php' method='post'>\n";

      if ($_POST["drp_action"] == "1") { /* delete */
            $graphs = array();

            /* find out which (if any) graphs are using this data source, so we can tell the user */
            if (isset($ds_array)) {
                  $graphs = db_fetch_assoc("select
                        graph_templates_graph.local_graph_id,
                        graph_templates_graph.title_cache
                        from (data_template_rrd,graph_templates_item,graph_templates_graph)
                        where graph_templates_item.task_item_id=data_template_rrd.id
                        and graph_templates_item.local_graph_id=graph_templates_graph.local_graph_id
                        and " . array_to_sql_or($ds_array, "data_template_rrd.local_data_id") . "
                        and graph_templates_graph.local_graph_id > 0
                        group by graph_templates_graph.local_graph_id
                        order by graph_templates_graph.title_cache");
            }

            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>Are you sure you want to delete the following data sources?</p>
                              <p>$ds_list</p>
                              ";
                              if (sizeof($graphs) > 0) {
                                    print "<tr bgcolor='#" . $colors["form_alternate1"] . "'><td class='textArea'><p class='textArea'>The following graphs are using these data sources:</p>\n";

                                    foreach ($graphs as $graph) {
                                          print "<strong>" . $graph["title_cache"] . "</strong><br>\n";
                                    }

                                    print "<br>";
                                    form_radio_button("delete_type", "3", "1", "Leave the graphs untouched.", "1"); print "<br>";
                                    form_radio_button("delete_type", "3", "2", "Delete all <strong>graph items</strong> that reference these data sources.", "1"); print "<br>";
                                    form_radio_button("delete_type", "3", "3", "Delete all <strong>graphs</strong> that reference these data sources.", "1"); print "<br>";
                                    print "</td></tr>";
                              }
                        print "
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "2") { /* change graph template */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>Choose a data template and click save to change the data template for
                              the following data souces. Be aware that all warnings will be suppressed during the
                              conversion, so graph data loss is possible.</p>
                              <p>$ds_list</p>
                              <p><strong>New Data Template:</strong><br>"; form_dropdown("data_template_id",db_fetch_assoc("select data_template.id,data_template.name from data_template order by data_template.name"),"name","id","","","0"); print "</p>
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "3") { /* change host */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>Choose a new host for these data sources:</p>
                              <p>$ds_list</p>
                              <p><strong>New Host:</strong><br>"; form_dropdown("host_id",db_fetch_assoc("select id,CONCAT_WS('',description,' (',hostname,')') as name from host order by description,hostname"),"name","id","","","0"); print "</p>
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "4") { /* duplicate */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>When you click save, the following data sources will be duplicated. You can
                              optionally change the title format for the new data sources.</p>
                              <p>$ds_list</p>
                              <p><strong>Title Format:</strong><br>"; form_text_box("title_format", "<ds_title> (1)", "", "255", "30", "text"); print "</p>
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "5") { /* data source -> data template */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>When you click save, the following data sources will be converted into data templates.
                              You can optionally change the title format for the new data templates.</p>
                              <p>$ds_list</p>
                              <p><strong>Title Format:</strong><br>"; form_text_box("title_format", "<ds_title> Template", "", "255", "30", "text"); print "</p>
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "6") { /* data source enable */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>When you click yes, the following data sources will be enabled.</p>
                              <p>$ds_list</p>
                        </td>
                  </tr>\n
                  ";
      }elseif ($_POST["drp_action"] == "7") { /* data source disable */
            print "     <tr>
                        <td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
                              <p>When you click yes, the following data sources will be disabled.</p>
                              <p>$ds_list</p>
                        </td>
                  </tr>\n
                  ";
      }

      if (!isset($ds_array)) {
            print "<tr><td bgcolor='#" . $colors["form_alternate1"]. "'><span class='textError'>You must select at least one data source.</span></td></tr>\n";
            $save_html = "";
      }else{
            $save_html = "<input type='image' src='images/button_yes.gif' alt='Save' align='absmiddle'>";
      }

      print "     <tr>
                  <td align='right' bgcolor='#eaeaea'>
                        <input type='hidden' name='action' value='actions'>
                        <input type='hidden' name='selected_items' value='" . (isset($ds_array) ? serialize($ds_array) : '') . "'>
                        <input type='hidden' name='drp_action' value='" . $_POST["drp_action"] . "'>
                        <a href='data_sources.php'><img src='images/button_no.gif' alt='Cancel' align='absmiddle' border='0'></a>
                        $save_html
                  </td>
            </tr>
            ";

      html_end_box();

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

/* ----------------------------
    data - Custom Data
   ---------------------------- */

function data_edit() {
      /* ================= input validation ================= */
      input_validate_input_number(get_request_var("id"));
      /* ==================================================== */

      global $config, $colors;

      if (!empty($_GET["id"])) {
            $data = db_fetch_row("select id,data_input_id,data_template_id,name,local_data_id from data_template_data where local_data_id=" . $_GET["id"]);
            $template_data = db_fetch_row("select id,data_input_id from data_template_data where data_template_id=" . $data["data_template_id"] . " and local_data_id=0");

            $host = db_fetch_row("select host.id,host.hostname from (data_local,host) where data_local.host_id=host.id and data_local.id=" . $_GET["id"]);

            $header_label = "[edit: " . $data["name"] . "]";
      }else{
            $header_label = "[new]";
      }

      print "<form method='post' action='data_sources.php'>\n";

      $i = 0;
      if (!empty($data["data_input_id"])) {
            /* get each INPUT field for this data input source */
            $fields = db_fetch_assoc("select * from data_input_fields where data_input_id=" . $data["data_input_id"] . " and input_output='in' order by sequence");

            html_start_box("<strong>Custom Data</strong> [data input: " . db_fetch_cell("select name from data_input where id=" . $data["data_input_id"]) . "]", "98%", $colors["header"], "3", "center", "");

            /* loop through each field found */
            if (sizeof($fields) > 0) {
            foreach ($fields as $field) {
                  $data_input_data = db_fetch_row("select * from data_input_data where data_template_data_id=" . $data["id"] . " and data_input_field_id=" . $field["id"]);

                  if (sizeof($data_input_data) > 0) {
                        $old_value = $data_input_data["value"];
                  }else{
                        $old_value = "";
                  }

                  /* if data template then get t_value from template, else always allow user input */
                  if (empty($data["data_template_id"])) {
                        $can_template = "on";
                  }else{
                        $can_template = db_fetch_cell("select t_value from data_input_data where data_template_data_id=" . $template_data["id"] . " and data_input_field_id=" . $field["id"]);
                  }

                  form_alternate_row_color($colors["form_alternate1"],$colors["form_alternate2"],$i);

                  if ((!empty($host["id"])) && (eregi('^(hostname|snmp_community|snmp_username|snmp_password|snmp_version)$', $field["type_code"]))) {
                        print "<td width='50%'><strong>" . $field["name"] . "</strong> (From Host: " . $host["hostname"] . ")</td>\n";
                        print "<td><em>$old_value</em></td>\n";
                  }elseif (empty($can_template)) {
                        print "<td width='50%'><strong>" . $field["name"] . "</strong> (From Data Template)</td>\n";
                        print "<td><em>" . (empty($old_value) ? "Nothing Entered" : $old_value) . "</em></td>\n";
                  }else{
                        print "<td width='50%'><strong>" . $field["name"] . "</strong></td>\n";
                        print "<td>";

                        draw_custom_data_row("value_" . $field["id"], $field["id"], $data["id"], $old_value);

                        print "</td>";
                  }

                  print "</tr>\n";

                  $i++;
            }
            }else{
                  print "<tr><td><em>No Input Fields for the Selected Data Input Source</em></td></tr>";
            }

            html_end_box();
      }

      form_hidden_box("local_data_id", (isset($data) ? $data["local_data_id"] : "0"), "");
      form_hidden_box("data_template_data_id", (isset($data) ? $data["id"] : "0"), "");
      form_hidden_box("save_component_data", "1", "");
}

/* ------------------------
    Data Source Functions
   ------------------------ */

function ds_rrd_remove() {
      /* ================= input validation ================= */
      input_validate_input_number(get_request_var("id"));
      /* ==================================================== */

      db_execute("delete from data_template_rrd where id=" . $_GET["id"]);
      db_execute("update graph_templates_item set task_item_id=0 where task_item_id=" . $_GET["id"]);

      header("Location: data_sources.php?action=ds_edit&id=" . $_GET["local_data_id"]);
}

function ds_rrd_add() {
      /* ================= input validation ================= */
      input_validate_input_number(get_request_var("id"));
      /* ==================================================== */

      db_execute("insert into data_template_rrd (local_data_id,rrd_maximum,rrd_minimum,rrd_heartbeat,data_source_type_id,
            data_source_name) values (" . $_GET["id"] . ",100,0,600,1,'ds')");
      $data_template_rrd_id = db_fetch_insert_id();

      header("Location: data_sources.php?action=ds_edit&id=" . $_GET["id"] . "&view_rrd=$data_template_rrd_id");
}

function ds_edit() {
      global $colors, $struct_data_source, $struct_data_source_item, $data_source_types;

      /* ================= input validation ================= */
      input_validate_input_number(get_request_var("id"));
      /* ==================================================== */

      $use_data_template = true;
      $host_id = 0;

      if (!empty($_GET["id"])) {
            $data_local = db_fetch_row("select host_id,data_template_id from data_local where id='" . $_GET["id"] . "'");
            $data = db_fetch_row("select * from data_template_data where local_data_id='" . $_GET["id"] . "'");

            if (!empty($data_local["data_template_id"])) {
                  $data_template = db_fetch_row("select id,name from data_template where id='" . $data_local["data_template_id"] . "'");
                  $data_template_data = db_fetch_row("select * from data_template_data where data_template_id='" . $data_local["data_template_id"] . "' and local_data_id=0");
            }

            $header_label = "[edit: " . get_data_source_title($_GET["id"]) . "]";

            if (empty($data_local["data_template_id"])) {
                  $use_data_template = false;
            }
      }else{
            $header_label = "[new]";

            $use_data_template = false;
      }

      /* handle debug mode */
      if (isset($_GET["debug"])) {
            if ($_GET["debug"] == "0") {
                  kill_session_var("ds_debug_mode");
            }elseif ($_GET["debug"] == "1") {
                  $_SESSION["ds_debug_mode"] = true;
            }
      }

      if (!empty($_GET["id"])) {
            ?>
            <table width="98%" align="center">
                  <tr>
                        <td class="textInfo" colspan="2" valign="top">
                              <?php print get_data_source_title($_GET["id"]);?>
                        </td>
                        <td class="textInfo" align="right" valign="top">
                              <span style="color: #c16921;">*<a href='data_sources.php?action=ds_edit&id=<?php print (isset($_GET["id"]) ? $_GET["id"] : 0);?>&debug=<?php print (isset($_SESSION["ds_debug_mode"]) ? "0" : "1");?>'>Turn <strong><?php print (isset($_SESSION["ds_debug_mode"]) ? "Off" : "On");?></strong> Data Source Debug Mode.</a>
                        </td>
                  </tr>
            </table>
            <br>
            <?php
      }

      html_start_box("<strong>Data Template Selection</strong> $header_label", "98%", $colors["header"], "3", "center", "");

      $form_array = array(
            "data_template_id" => array(
                  "method" => "drop_sql",
                  "friendly_name" => "Selected Data Template",
                  "description" => "The name given to this data template.",
                  "value" => (isset($data_template) ? $data_template["id"] : "0"),
                  "none_value" => "None",
                  "sql" => "select id,name from data_template order by name"
                  ),
            "host_id" => array(
                  "method" => "drop_sql",
                  "friendly_name" => "Host",
                  "description" => "Choose the host that this graph belongs to.",
                  "value" => (isset($_GET["host_id"]) ? $_GET["host_id"] : $data_local["host_id"]),
                  "none_value" => "None",
                  "sql" => "select id,CONCAT_WS('',description,' (',hostname,')') as name from host order by description,hostname"
                  ),
            "_data_template_id" => array(
                  "method" => "hidden",
                  "value" => (isset($data_template) ? $data_template["id"] : "0")
                  ),
            "_host_id" => array(
                  "method" => "hidden",
                  "value" => (empty($data_local["host_id"]) ? (isset($_GET["host_id"]) ? $_GET["host_id"] : "0") : $data_local["host_id"])
                  ),
            "_data_input_id" => array(
                  "method" => "hidden",
                  "value" => (isset($data["data_input_id"]) ? $data["data_input_id"] : "0")
                  ),
            "data_template_data_id" => array(
                  "method" => "hidden",
                  "value" => (isset($data) ? $data["id"] : "0")
                  ),
            "local_data_template_data_id" => array(
                  "method" => "hidden",
                  "value" => (isset($data) ? $data["local_data_template_data_id"] : "0")
                  ),
            "local_data_id" => array(
                  "method" => "hidden",
                  "value" => (isset($data) ? $data["local_data_id"] : "0")
                  ),
            );

      draw_edit_form(
            array(
                  "config" => array(),
                  "fields" => $form_array
                  )
            );

      html_end_box();

      /* only display the "inputs" area if we are using a data template for this data source */
      if (!empty($data["data_template_id"])) {
            $template_data_rrds = db_fetch_assoc("select * from data_template_rrd where local_data_id=" . $_GET["id"] . " order by data_source_name");

            html_start_box("<strong>Supplemental Data Template Data</strong>", "98%", $colors["header"], "3", "center", "");

            draw_nontemplated_fields_data_source($data["data_template_id"], $data["local_data_id"], $data, "|field|", "<strong>Data Source Fields</strong>", true, true, 0);
            draw_nontemplated_fields_data_source_item($data["data_template_id"], $template_data_rrds, "|field|_|id|", "<strong>Data Source Item Fields</strong>", true, true, true, 0);
            draw_nontemplated_fields_custom_data($data["id"], "value_|id|", "<strong>Custom Data</strong>", true, true, 0);

            form_hidden_box("save_component_data","1","");

            html_end_box();
      }

      if (((isset($_GET["id"])) || (isset($_GET["new"]))) && (empty($data["data_template_id"]))) {
            html_start_box("<strong>Data Source</strong>", "98%", $colors["header"], "3", "center", "");

            $form_array = array();

            while (list($field_name, $field_array) = each($struct_data_source)) {
                  $form_array += array($field_name => $struct_data_source[$field_name]);

                  if (!(($use_data_template == false) || (!empty($data_template_data{"t_" . $field_name})) || ($field_array["flags"] == "NOTEMPLATE"))) {
                        $form_array[$field_name]["description"] = "";
                  }

                  $form_array[$field_name]["value"] = (isset($data[$field_name]) ? $data[$field_name] : "");
                  $form_array[$field_name]["form_id"] = (empty($data["id"]) ? "0" : $data["id"]);

                  if (!(($use_data_template == false) || (!empty($data_template_data{"t_" . $field_name})) || ($field_array["flags"] == "NOTEMPLATE"))) {
                        $form_array[$field_name]["method"] = "template_" . $form_array[$field_name]["method"];
                  }
            }

            draw_edit_form(
                  array(
                        "config" => array(
                              "no_form_tag" => true
                              ),
                        "fields" => inject_form_variables($form_array, (isset($data) ? $data : array()))
                        )
                  );

            html_end_box();

            /* fetch ALL rrd's for this data source */
            if (!empty($_GET["id"])) {
                  $template_data_rrds = db_fetch_assoc("select id,data_source_name from data_template_rrd where local_data_id=" . $_GET["id"] . " order by data_source_name");
            }

            /* select the first "rrd" of this data source by default */
            if (empty($_GET["view_rrd"])) {
                  $_GET["view_rrd"] = (isset($template_data_rrds[0]["id"]) ? $template_data_rrds[0]["id"] : "0");
            }

            /* get more information about the rrd we chose */
            if (!empty($_GET["view_rrd"])) {
                  $local_data_template_rrd_id = db_fetch_cell("select local_data_template_rrd_id from data_template_rrd where id=" . $_GET["view_rrd"]);

                  $rrd = db_fetch_row("select * from data_template_rrd where id=" . $_GET["view_rrd"]);
                  $rrd_template = db_fetch_row("select * from data_template_rrd where id=$local_data_template_rrd_id");

                  $header_label = "[edit: " . $rrd["data_source_name"] . "]";
            }else{
                  $header_label = "";
            }

            $i = 0;
            if (isset($template_data_rrds)) {
                  if (sizeof($template_data_rrds) > 1) {

                  /* draw the data source tabs on the top of the page */
                  print "     <table class='tabs' width='98%' cellspacing='0' cellpadding='3' align='center'>
                              <tr>\n";

                              foreach ($template_data_rrds as $template_data_rrd) {
                                    $i++;
                                    print "     <td " . (($template_data_rrd["id"] == $_GET["view_rrd"]) ? "bgcolor='silver'" : "bgcolor='#DFDFDF'") . " nowrap='nowrap' width='" . ((strlen($template_data_rrd["data_source_name"]) * 9) + 50) . "' align='center' class='tab'>
                                                <span class='textHeader'><a href='data_sources.php?action=ds_edit&id=" . $_GET["id"] . "&view_rrd=" . $template_data_rrd["id"] . "'>$i: " . $template_data_rrd["data_source_name"] . "</a>" . (($use_data_template == false) ? " <a href='data_sources.php?action=rrd_remove&id=" . $template_data_rrd["id"] . "&local_data_id=" . $_GET["id"] . "'><img src='images/delete_icon.gif' border='0' alt='Delete'></a>" : "") . "</span>
                                          </td>\n
                                          <td width='1'></td>\n";
                              }

                              print "
                              <td></td>\n
                              </tr>
                        </table>\n";

                  }elseif (sizeof($template_data_rrds) == 1) {
                        $_GET["view_rrd"] = $template_data_rrds[0]["id"];
                  }
            }

            html_start_box("", "98%", $colors["header"], "3", "center", "");

            print "     <tr>
                        <td bgcolor='#" . $colors["header"] . "' class='textHeaderDark'>
                              <strong>Data Source Item</strong> $header_label
                        </td>
                        <td class='textHeaderDark' align='right' bgcolor='" . $colors["header"] . "'>
                              " . ((!empty($_GET["id"]) && (empty($data_template["id"]))) ? "<strong><a class='linkOverDark' href='data_sources.php?action=rrd_add&id=" . $_GET["id"] . "'>New</a>&nbsp;</strong>" : "") . "
                        </td>
                  </tr>\n";

            /* data input fields list */
            if ((empty($data["data_input_id"])) || (db_fetch_cell("select type_id from data_input where id=" . $data["data_input_id"]) > "1")) {
                  unset($struct_data_source_item["data_input_field_id"]);
            }else{
                  $struct_data_source_item["data_input_field_id"]["sql"] = "select id,CONCAT(data_name,' - ',name) as name from data_input_fields where data_input_id=" . $data["data_input_id"] . " and input_output='out' and update_rra='on' order by data_name,name";
            }

            $form_array = array();

            while (list($field_name, $field_array) = each($struct_data_source_item)) {
                  $form_array += array($field_name => $struct_data_source_item[$field_name]);

                  if (!(($use_data_template == false) || ($rrd_template{"t_" . $field_name} == "on"))) {
                        $form_array[$field_name]["description"] = "";
                  }

                  $form_array[$field_name]["value"] = (isset($rrd) ? $rrd[$field_name] : "");

                  if (!(($use_data_template == false) || ($rrd_template{"t_" . $field_name} == "on"))) {
                        $form_array[$field_name]["method"] = "template_" . $form_array[$field_name]["method"];
                  }
            }

            draw_edit_form(
                  array(
                        "config" => array(
                              "no_form_tag" => true
                              ),
                        "fields" => array(
                              "data_template_rrd_id" => array(
                                    "method" => "hidden",
                                    "value" => (isset($rrd) ? $rrd["id"] : "0")
                              ),
                              "local_data_template_rrd_id" => array(
                                    "method" => "hidden",
                                    "value" => (isset($rrd) ? $rrd["local_data_template_rrd_id"] : "0")
                              )
                        ) + $form_array
                  )
                  );

            html_end_box();

            /* data source data goes here */
            data_edit();

            form_hidden_box("current_rrd", $_GET["view_rrd"], "0");
      }

      /* display the debug mode box if the user wants it */
      if ((isset($_SESSION["ds_debug_mode"])) && (isset($_GET["id"]))) {
            ?>
            <table width="98%" align="center">
                  <tr>
                        <td>
                              <span class="textInfo">Data Source Debug</span><br>
                              <pre><?php print rrdtool_function_create($_GET["id"], true, array());?></pre>
                        </td>
                  </tr>
            </table>
            <?php
      }

      if ((isset($_GET["id"])) || (isset($_GET["new"]))) {
            form_hidden_box("save_component_data_source","1","");
      }else{
            form_hidden_box("save_component_data_source_new","1","");
      }

      form_save_button("data_sources.php");
}

function ds() {
      global $colors, $ds_actions;

      /* ================= input validation ================= */
      input_validate_input_number(get_request_var_request("host_id"));
      input_validate_input_number(get_request_var_request("page"));
      /* ==================================================== */

      /* clean up search string */
      if (isset($_REQUEST["filter"])) {
            $_REQUEST["filter"] = sanitize_search_string(get_request_var("filter"));
      }

      /* if the user pushed the 'clear' button */
      if (isset($_REQUEST["clear_x"])) {
            kill_session_var("sess_ds_current_page");
            kill_session_var("sess_ds_filter");
            kill_session_var("sess_ds_host_id");

            unset($_REQUEST["page"]);
            unset($_REQUEST["filter"]);
            unset($_REQUEST["host_id"]);
      }

      /* remember these search fields in session vars so we don't have to keep passing them around */
      load_current_session_value("page", "sess_ds_current_page", "1");
      load_current_session_value("filter", "sess_ds_filter", "");
      load_current_session_value("host_id", "sess_ds_host_id", "-1");

      $host = db_fetch_row("select hostname from host where id=" . $_REQUEST["host_id"]);

      html_start_box("<strong>Data Sources</strong> [host: " . (empty($host["hostname"]) ? "No Host" : $host["hostname"]) . "]", "98%", $colors["header"], "3", "center", "data_sources.php?action=ds_edit&host_id=" . $_REQUEST["host_id"]);

      include("./include/html/inc_data_source_filter_table.php");

      html_end_box();

      /* form the 'where' clause for our main sql query */
      $sql_where = "and data_template_data.name_cache like '%%" . $_REQUEST["filter"] . "%%'";

      if ($_REQUEST["host_id"] == "-1") {
            /* Show all items */
      }elseif ($_REQUEST["host_id"] == "0") {
            $sql_where .= " and data_local.host_id=0";
      }elseif (!empty($_REQUEST["host_id"])) {
            $sql_where .= " and data_local.host_id=" . $_REQUEST["host_id"];
      }

      $total_rows = sizeof(db_fetch_assoc("select
            data_local.id
            from (data_local,data_template_data)
            where data_local.id=data_template_data.local_data_id
            $sql_where"));
      $data_sources = db_fetch_assoc("select
            data_template_data.local_data_id,
            data_template_data.name_cache,
            data_template_data.active,
            data_input.name as data_input_name,
            data_template.name as data_template_name,
            data_local.host_id
            from (data_local,data_template_data)
            left join data_input
            on (data_input.id=data_template_data.data_input_id)
            left join data_template
            on (data_local.data_template_id=data_template.id)
            where data_local.id=data_template_data.local_data_id
            $sql_where
            order by data_template_data.name_cache,data_local.host_id
            limit " . (read_config_option("num_rows_data_source")*($_REQUEST["page"]-1)) . "," . read_config_option("num_rows_data_source"));

      html_start_box("", "98%", $colors["header"], "3", "center", "");

      /* generate page list */
      $url_page_select = get_page_list($_REQUEST["page"], MAX_DISPLAY_PAGES, read_config_option("num_rows_data_source"), $total_rows, "data_sources.php?filter=" . $_REQUEST["filter"] . "&host_id=" . $_REQUEST["host_id"]);

      $nav = "<tr bgcolor='#" . $colors["header"] . "'>
                  <td colspan='5'>
                        <table width='100%' cellspacing='0' cellpadding='0' border='0'>
                              <tr>
                                    <td align='left' class='textHeaderDark'>
                                          <strong>&lt;&lt; "; if ($_REQUEST["page"] > 1) { $nav .= "<a class='linkOverDark' href='data_sources.php?filter=" . $_REQUEST["filter"] . "&host_id=" . $_REQUEST["host_id"] . "&page=" . ($_REQUEST["page"]-1) . "'>"; } $nav .= "Previous"; if ($_REQUEST["page"] > 1) { $nav .= "</a>"; } $nav .= "</strong>
                                    </td>\n
                                    <td align='center' class='textHeaderDark'>
                                          Showing Rows " . ((read_config_option("num_rows_data_source")*($_REQUEST["page"]-1))+1) . " to " . ((($total_rows < read_config_option("num_rows_data_source")) || ($total_rows < (read_config_option("num_rows_data_source")*$_REQUEST["page"]))) ? $total_rows : (read_config_option("num_rows_data_source")*$_REQUEST["page"])) . " of $total_rows [$url_page_select]
                                    </td>\n
                                    <td align='right' class='textHeaderDark'>
                                          <strong>"; if (($_REQUEST["page"] * read_config_option("num_rows_data_source")) < $total_rows) { $nav .= "<a class='linkOverDark' href='data_sources.php?filter=" . $_REQUEST["filter"] . "&host_id=" . $_REQUEST["host_id"] . "&page=" . ($_REQUEST["page"]+1) . "'>"; } $nav .= "Next"; if (($_REQUEST["page"] * read_config_option("num_rows_data_source")) < $total_rows) { $nav .= "</a>"; } $nav .= " &gt;&gt;</strong>
                                    </td>\n
                              </tr>
                        </table>
                  </td>
            </tr>\n";

      print $nav;

      html_header_checkbox(array("Name", "Data Input Method", "Active", "Template Name"));

      $i = 0;
      if (sizeof($data_sources) > 0) {
            foreach ($data_sources as $data_source) {
                  form_alternate_row_color($colors["alternate"],$colors["light"],$i); $i++;
                        ?>
                        <td>
                              <a class='linkEditMain' href='data_sources.php?action=ds_edit&id=<?php print $data_source["local_data_id"];?>' title='<?php print $data_source["name_cache"];?>'><?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", title_trim($data_source["name_cache"], read_config_option("max_title_data_source"))); }else{ print title_trim($data_source["name_cache"], read_config_option("max_title_data_source")); } ?></a>
                        </td>
                        <td>
                              <?php print $data_source["data_input_name"];?>
                        </td>
                        <td>
                              <?php print (($data_source["active"] == "on") ? "Yes" : "<span style='color: red;'>No</span>");?>
                        </td>
                        <td>
                              <?php print ((empty($data_source["data_template_name"])) ? "<em>None</em>" : $data_source["data_template_name"]);?>
                        </td>
                        <td style="<?php print get_checkbox_style();?>" width="1%" align="right">
                              <input type='checkbox' style='margin: 0px;' name='chk_<?php print $data_source["local_data_id"];?>' title="<?php print $data_source["name_cache"];?>">
                        </td>
                  </tr>
                  <?php
            }

            /* put the nav bar on the bottom as well */
            print $nav;
      }else{
            print "<tr><td><em>No Data Sources</em></td></tr>";
      }

      html_end_box(false);

      /* draw the dropdown containing a list of available actions for this form */
      draw_actions_dropdown($ds_actions);

      print "</form>\n";
}
?>

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