<?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/                                       |
 +-------------------------------------------------------------------------+
*/

/* update_data_source_title_cache_from_template - updates the title cache for all data sources
	that match a given data template
   @arg $data_template_id - (int) the ID of the data template to match */
function update_data_source_title_cache_from_template($data_template_id) {
	$data = db_fetch_assoc("select local_data_id from data_template_data where data_template_id=$data_template_id and local_data_id>0");

	if (sizeof($data) > 0) {
	foreach ($data as $item) {
		update_data_source_title_cache($item["local_data_id"]);
	}
	}
}

/* update_data_source_title_cache_from_query - updates the title cache for all data sources
	that match a given data query/index combination
   @arg $snmp_query_id - (int) the ID of the data query to match
   @arg $snmp_index - the index within the data query to match */
function update_data_source_title_cache_from_query($snmp_query_id, $snmp_index) {
	$data = db_fetch_assoc("select id from data_local where snmp_query_id=$snmp_query_id and snmp_index='$snmp_index'");

	if (sizeof($data) > 0) {
	foreach ($data as $item) {
		update_data_source_title_cache($item["id"]);
	}
	}
}

/* update_data_source_title_cache_from_host - updates the title cache for all data sources
	that match a given host
   @arg $host_id - (int) the ID of the host to match */
function update_data_source_title_cache_from_host($host_id) {
	$data = db_fetch_assoc("select id from data_local where host_id=$host_id");

	if (sizeof($data) > 0) {
	foreach ($data as $item) {
		update_data_source_title_cache($item["id"]);
	}
	}
}

/* update_data_source_title_cache - updates the title cache for a single data source
   @arg $local_data_id - (int) the ID of the data source to update the title cache for */
function update_data_source_title_cache($local_data_id) {
	db_execute("update data_template_data set name_cache='" . addslashes(get_data_source_title($local_data_id)) . "' where local_data_id=$local_data_id");
}

/* update_graph_title_cache_from_template - updates the title cache for all graphs
	that match a given graph template
   @arg $graph_template_id - (int) the ID of the graph template to match */
function update_graph_title_cache_from_template($graph_template_id) {
	$graphs = db_fetch_assoc("select local_graph_id from graph_templates_graph where graph_template_id=$graph_template_id and local_graph_id>0");

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

/* update_graph_title_cache_from_query - updates the title cache for all graphs
	that match a given data query/index combination
   @arg $snmp_query_id - (int) the ID of the data query to match
   @arg $snmp_index - the index within the data query to match */
function update_graph_title_cache_from_query($snmp_query_id, $snmp_index) {
	$graphs = db_fetch_assoc("select id from graph_local where snmp_query_id=$snmp_query_id and snmp_index='$snmp_index'");

	if (sizeof($graphs) > 0) {
	foreach ($graphs as $item) {
		update_graph_title_cache($item["id"]);
	}
	}
}

/* update_graph_title_cache_from_host - updates the title cache for all graphs
	that match a given host
   @arg $host_id - (int) the ID of the host to match */
function update_graph_title_cache_from_host($host_id) {
	$graphs = db_fetch_assoc("select id from graph_local where host_id=$host_id");

	if (sizeof($graphs) > 0) {
	foreach ($graphs as $item) {
		update_graph_title_cache($item["id"]);
	}
	}
}

/* update_graph_title_cache - updates the title cache for a single graph
   @arg $local_graph_id - (int) the ID of the graph to update the title cache for */
function update_graph_title_cache($local_graph_id) {
	db_execute("update graph_templates_graph set title_cache='" . addslashes(get_graph_title($local_graph_id)) . "' where local_graph_id=$local_graph_id");
}

/* null_out_substitutions - takes a string and cleans out any host variables that do not have values
   @arg $string - the string to clean out unsubstituted variables for
   @returns - the cleaned up string */
function null_out_substitutions($string) {
	global $regexps;

	return eregi_replace("\|host_" . VALID_HOST_FIELDS . "\|( - )?", "", $string);
}

/* expand_title - takes a string and substitutes all data query variables contained in it or cleans
	them out if no data query is in use
   @arg $host_id - (int) the host ID to match
   @arg $snmp_query_id - (int) the data query ID to match
   @arg $snmp_index - the data query index to match
   @arg $title - the original string that contains the data query variables
   @returns - the original string with all of the variable substitutions made */
function expand_title($host_id, $snmp_query_id, $snmp_index, $title) {
	if ((strstr($title, "|")) && (!empty($host_id))) {
		if (($snmp_query_id != "0") && ($snmp_index != "")) {
			return substitute_snmp_query_data(null_out_substitutions(substitute_host_data($title, "|", "|", $host_id)), $host_id, $snmp_query_id, $snmp_index, read_config_option("max_data_query_field_length"));
		}else{
			return null_out_substitutions(substitute_host_data($title, "|", "|", $host_id));
		}
	}else{
		return null_out_substitutions($title);
	}
}

/* substitute_script_query_path - takes a string and substitutes all path variables contained in it
   @arg $path - the string to make path variable substitutions on
   @returns - the original string with all of the variable substitutions made */
function substitute_script_query_path($path) {
	global $config;

	$path = clean_up_path(str_replace("|path_cacti|", $config["base_path"], $path));
	$path = clean_up_path(str_replace("|path_php_binary|", read_config_option("path_php_binary"), $path));

	return $path;
}

/* substitute_host_data - takes a string and substitutes all host variables contained in it
   @arg $string - the string to make host variable substitutions on
   @arg $l_escape_string - the character used to escape each variable on the left side
   @arg $r_escape_string - the character used to escape each variable on the right side
   @arg $host_id - (int) the host ID to match
   @returns - the original string with all of the variable substitutions made */
function substitute_host_data($string, $l_escape_string, $r_escape_string, $host_id) {
	if (!isset($_SESSION["sess_host_cache_array"][$host_id])) {
		$host = db_fetch_row("select * from host where id=$host_id");
		$_SESSION["sess_host_cache_array"][$host_id] = $host;
	}

	$string = str_replace($l_escape_string . "host_management_ip" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["hostname"], $string); /* for compatability */
	$string = str_replace($l_escape_string . "host_hostname" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["hostname"], $string);
	$string = str_replace($l_escape_string . "host_description" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["description"], $string);
	$string = str_replace($l_escape_string . "host_snmp_community" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_community"], $string);
	$string = str_replace($l_escape_string . "host_snmp_version" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_version"], $string);
	$string = str_replace($l_escape_string . "host_snmp_username" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_username"], $string);
	$string = str_replace($l_escape_string . "host_snmp_password" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_password"], $string);
	$string = str_replace($l_escape_string . "host_snmp_port" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_port"], $string);
	$string = str_replace($l_escape_string . "host_snmp_timeout" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_timeout"], $string);
	$string = str_replace($l_escape_string . "host_id" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["id"], $string);

	return $string;
}

/* substitute_snmp_query_data - takes a string and substitutes all data query variables contained in it
   @arg $string - the original string that contains the data query variables
   @arg $host_id - (int) the host ID to match
   @arg $snmp_query_id - (int) the data query ID to match
   @arg $snmp_index - the data query index to match
   @arg $max_chars - the maximum number of characters to substitute
   @returns - the original string with all of the variable substitutions made */
function substitute_snmp_query_data($string, $host_id, $snmp_query_id, $snmp_index, $max_chars = 0) {
	$snmp_cache_data = db_fetch_assoc("select field_name,field_value from host_snmp_cache where host_id=$host_id and snmp_query_id=$snmp_query_id and snmp_index='$snmp_index'");

	if (sizeof($snmp_cache_data) > 0) {
		foreach ($snmp_cache_data as $data) {
			if ($data["field_value"] != "") {
				if ($max_chars > 0) {
					$data["field_value"] = substr($data["field_value"], 0, $max_chars);
				}

				$string = stri_replace("|query_" . $data["field_name"] . "|", $data["field_value"], $string);
			}
		}
	}

	return $string;
}

?>
