<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2003 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/                                       |
 +-------------------------------------------------------------------------+
*/

function &import_xml_data(&$xml_data) {
	global $config, $hash_type_codes, $hash_version_codes;
	
	include($config["library_path"] . "/xml.php");
	
	$xml_array = xml2array($xml_data);
	
	if (sizeof($xml_array) == 0) {
		raise_message(7); /* xml parse error */
		return;
	}
	
	while (list($hash, $hash_array) = each($xml_array)) {
		/* parse information from the hash */
		$parsed_hash = parse_xml_hash($hash);
		
		/* invalid/wrong hash */
		if ($parsed_hash == false) { return ; }
		
		if (isset($dep_hash_cache{$parsed_hash["type"]})) {
			array_push($dep_hash_cache{$parsed_hash["type"]}, $parsed_hash);
		}else{
			$dep_hash_cache{$parsed_hash["type"]} = array($parsed_hash);
		}
	}
	
	$hash_cache = array();
	
	/* the order of the $hash_type_codes array is ordered such that the items
	with the most dependencies are last and the items with no dependenecies are first.
	this means dependencies will just magically work themselves out :) */
	reset($hash_type_codes);
	while (list($type, $code) = each($hash_type_codes)) {
		/* do we have any matches for this type? */
		if (isset($dep_hash_cache[$type])) {
			/* yes we do. loop through each match for this type */
			for ($i=0; $i<count($dep_hash_cache[$type]); $i++) {
				$hash_array = $xml_array{"hash_" . $hash_type_codes{$dep_hash_cache[$type][$i]["type"]} . $hash_version_codes{$dep_hash_cache[$type][$i]["version"]} . $dep_hash_cache[$type][$i]["hash"]};
				
				switch($type) {
				case 'graph_template':
					$hash_cache += xml_to_graph_template($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'data_template':
					$hash_cache += xml_to_data_template($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'host_template':
					$hash_cache += xml_to_host_template($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'data_input_method':
					$hash_cache += xml_to_data_input_method($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'data_query':
					$hash_cache += xml_to_data_query($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'gprint_preset':
					$hash_cache += xml_to_gprint_preset($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'cdef':
					$hash_cache += xml_to_cdef($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				case 'round_robin_archive':
					$hash_cache += xml_to_round_robin_archive($dep_hash_cache[$type][$i]["hash"], $hash_array, $hash_cache);
					break;
				}
				
				$info_array[$type]{isset($info_array[$type]) ? count($info_array[$type]) : 0} = $_SESSION["import_debug_info"];
				
				kill_session_var("import_debug_info");
			}
		}
	}
	
	return $info_array;
}

function &xml_to_graph_template($hash, &$xml_array, &$hash_cache) {
	global $struct_graph, $struct_graph_item, $fields_graph_template_input_edit;
	
	/* import into: graph_templates */
	$_graph_template_id = db_fetch_cell("select id from graph_templates where hash='$hash'");
	$save["id"] = (empty($_graph_template_id) ? "0" : $_graph_template_id);
	$save["hash"] = $hash;
	$save["name"] = $xml_array["name"];
	$graph_template_id = sql_save($save, "graph_templates");
	
	$hash_cache["graph_template"][$hash] = $graph_template_id;
	
	/* import into: graph_templates_graph */
	unset($save);
	$save["id"] = (empty($_graph_template_id) ? "0" : db_fetch_cell("select graph_templates_graph.id from graph_templates,graph_templates_graph where graph_templates.id=graph_templates_graph.graph_template_id and graph_templates.id=$graph_template_id and graph_templates_graph.local_graph_id=0"));
	$save["graph_template_id"] = $graph_template_id;
	
	while (list($field_name, $field_array) = each($struct_graph)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array["graph"]{"t_" . $field_name})) {
			$save{"t_" . $field_name} = $xml_array["graph"]{"t_" . $field_name};
		}
		
		/* make sure this field exists in the xml array first */
		if (isset($xml_array["graph"][$field_name])) {
			$save[$field_name] = $xml_array["graph"][$field_name];
		}
	}
	
	$graph_template_graph_id = sql_save($save, "graph_templates_graph");
	
	/* import into: graph_templates_item */
	if (is_array($xml_array["items"])) {
		while (list($item_hash, $item_array) = each($xml_array["items"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_graph_template_item_id = db_fetch_cell("select id from graph_templates_item where hash='" . $parsed_hash["hash"] . "' and graph_template_id=$graph_template_id and local_graph_id=0");
			$save["id"] = (empty($_graph_template_item_id) ? "0" : $_graph_template_item_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["graph_template_id"] = $graph_template_id;
			
			reset($struct_graph_item);
			while (list($field_name, $field_array) = each($struct_graph_item)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					/* is the value of this field a hash or not? */
					if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $item_array[$field_name])) {
						$save[$field_name] = resolve_hash_to_id($item_array[$field_name], &$hash_cache);
					}else{
						$save[$field_name] = $item_array[$field_name];
					}
				}
			}
			
			$graph_template_item_id = sql_save($save, "graph_templates_item");
			
			$hash_cache["graph_template_item"]{$parsed_hash["hash"]} = $graph_template_item_id;
		}
	}
	
	/* import into: graph_template_input */
	if (is_array($xml_array["inputs"])) {
		while (list($item_hash, $item_array) = each($xml_array["inputs"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_graph_template_input_id = db_fetch_cell("select id from graph_template_input where hash='" . $parsed_hash["hash"] . "' and graph_template_id=$graph_template_id");
			$save["id"] = (empty($_graph_template_input_id) ? "0" : $_graph_template_input_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["graph_template_id"] = $graph_template_id;
			
			reset($fields_graph_template_input_edit);
			while (list($field_name, $field_array) = each($fields_graph_template_input_edit)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					$save[$field_name] = $item_array[$field_name];
				}
			}
			
			$graph_template_input_id = sql_save($save, "graph_template_input");
			
			$hash_cache["graph_template_input"]{$parsed_hash["hash"]} = $graph_template_input_id;
			
			/* import into: graph_template_input_defs */
			$hash_items = explode("|", $item_array["items"]);
			
			if (!empty($hash_items[0])) {
				for ($i=0; $i<count($hash_items); $i++) {
					/* parse information from the hash */
					$parsed_hash = parse_xml_hash($hash_items[$i]);
					
					/* invalid/wrong hash */
					if ($parsed_hash == false) { return false; }
					
					if (isset($hash_cache["graph_template_item"]{$parsed_hash["hash"]})) {
						db_execute("replace into graph_template_input_defs (graph_template_input_id,graph_template_item_id) values ($graph_template_input_id," . $hash_cache["graph_template_item"]{$parsed_hash["hash"]} . ")");
					}
				}
			}
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_graph_template_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($graph_template_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_data_template($hash, &$xml_array, &$hash_cache) {
	global $struct_data_source, $struct_data_source_item;
	
	/* import into: data_template */
	$_data_template_id = db_fetch_cell("select id from data_template where hash='$hash'");
	$save["id"] = (empty($_data_template_id) ? "0" : $_data_template_id);
	$save["hash"] = $hash;
	$save["name"] = $xml_array["name"];
	
	$data_template_id = sql_save($save, "data_template");
	
	$hash_cache["data_template"][$hash] = $data_template_id;
	
	/* import into: data_template_data */
	unset($save);
	$save["id"] = (empty($_data_template_id) ? "0" : db_fetch_cell("select data_template_data.id from data_template,data_template_data where data_template.id=data_template_data.data_template_id and data_template.id=$data_template_id and data_template_data.local_data_id=0"));
	$save["data_template_id"] = $data_template_id;
	
	while (list($field_name, $field_array) = each($struct_data_source)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array["ds"]{"t_" . $field_name})) {
			$save{"t_" . $field_name} = $xml_array["ds"]{"t_" . $field_name};
		}
		
		/* make sure this field exists in the xml array first */
		if (isset($xml_array["ds"][$field_name])) {
			/* is the value of this field a hash or not? */
			if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $xml_array["ds"][$field_name])) {
				$save[$field_name] = resolve_hash_to_id($xml_array["ds"][$field_name], &$hash_cache);
			}else{
				$save[$field_name] = $xml_array["ds"][$field_name];
			}
		}
	}
	
	$data_template_data_id = sql_save($save, "data_template_data");
	
	/* import into: data_template_data_rra */
	$hash_items = explode("|", $xml_array["ds"]["rra_items"]);
	
	if (!empty($hash_items[0])) {
		for ($i=0; $i<count($hash_items); $i++) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($hash_items[$i]);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			if (isset($hash_cache["round_robin_archive"]{$parsed_hash["hash"]})) {
				db_execute("replace into data_template_data_rra (data_template_data_id,rra_id) values ($data_template_data_id," . $hash_cache["round_robin_archive"]{$parsed_hash["hash"]} . ")");
			}
		}
	}
	
	/* import into: data_template_rrd */
	if (is_array($xml_array["items"])) {
		while (list($item_hash, $item_array) = each($xml_array["items"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_data_template_rrd_id = db_fetch_cell("select id from data_template_rrd where hash='" . $parsed_hash["hash"] . "' and data_template_id=$data_template_id and local_data_id=0");
			$save["id"] = (empty($_data_template_rrd_id) ? "0" : $_data_template_rrd_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["data_template_id"] = $data_template_id;
			
			reset($struct_data_source_item);
			while (list($field_name, $field_array) = each($struct_data_source_item)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array{"t_" . $field_name})) {
					$save{"t_" . $field_name} = $item_array{"t_" . $field_name};
				}
				
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					/* is the value of this field a hash or not? */
					if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $item_array[$field_name])) {
						$save[$field_name] = resolve_hash_to_id($item_array[$field_name], &$hash_cache);
					}else{
						$save[$field_name] = $item_array[$field_name];
					}
				}
			}
			
			$data_template_rrd_id = sql_save($save, "data_template_rrd");
			
			$hash_cache["data_template_item"]{$parsed_hash["hash"]} = $data_template_rrd_id;
		}
	}
	
	/* import into: data_input_data */
	if (is_array($xml_array["data"])) {
		while (list($item_hash, $item_array) = each($xml_array["data"])) {
			unset($save);
			$save["data_template_data_id"] = $data_template_data_id;
			$save["data_input_field_id"] = resolve_hash_to_id($item_array["data_input_field_id"], &$hash_cache);
			$save["t_value"] = $item_array["t_value"];
			$save["value"] = $item_array["value"];
			
			sql_save($save, "data_input_data", array("data_template_data_id", "data_input_field_id"));
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_data_template_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($data_template_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_data_query($hash, &$xml_array, &$hash_cache) {
	global $fields_data_query_edit, $fields_data_query_item_edit;
	
	/* import into: snmp_query */
	$_data_query_id = db_fetch_cell("select id from snmp_query where hash='$hash'");
	$save["id"] = (empty($_data_query_id) ? "0" : $_data_query_id);
	$save["hash"] = $hash;
	
	while (list($field_name, $field_array) = each($fields_data_query_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			/* is the value of this field a hash or not? */
			if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $xml_array[$field_name])) {
				$save[$field_name] = resolve_hash_to_id($xml_array[$field_name], &$hash_cache);
			}else{
				$save[$field_name] = $xml_array[$field_name];
			}
		}
	}
	
	$data_query_id = sql_save($save, "snmp_query");
	
	$hash_cache["data_query"][$hash] = $data_query_id;
	
	/* import into: snmp_query_field */
	if (is_array($xml_array["fields"])) {
		while (list($item_hash, $item_array) = each($xml_array["fields"])) {
			unset($save);
			$save["snmp_query_id"] = $data_query_id;
			$save["data_input_field_id"] = resolve_hash_to_id($item_array["data_input_field_id"], &$hash_cache);
			$save["action_id"] = $item_array["action_id"];
			
			sql_save($save, "snmp_query_field", array("snmp_query_id", "data_input_field_id"));
		}
	}
	
	/* import into: snmp_query_graph */
	if (is_array($xml_array["graphs"])) {
		while (list($item_hash, $item_array) = each($xml_array["graphs"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_data_query_graph_id = db_fetch_cell("select id from snmp_query_graph where hash='" . $parsed_hash["hash"] . "' and snmp_query_id=$data_query_id");
			$save["id"] = (empty($_data_query_graph_id) ? "0" : $_data_query_graph_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["snmp_query_id"] = $data_query_id;
			
			reset($fields_data_query_item_edit);
			while (list($field_name, $field_array) = each($fields_data_query_item_edit)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					/* is the value of this field a hash or not? */
					if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $item_array[$field_name])) {
						$save[$field_name] = resolve_hash_to_id($item_array[$field_name], &$hash_cache);
					}else{
						$save[$field_name] = $item_array[$field_name];
					}
				}
			}
			
			$data_query_graph_id = sql_save($save, "snmp_query_graph");
			
			$hash_cache["data_query_graph"]{$parsed_hash["hash"]} = $data_query_graph_id;
			
			/* import into: snmp_query_graph_rrd */
			if (is_array($item_array["rrd"])) {
				while (list($sub_item_hash, $sub_item_array) = each($item_array["rrd"])) {
					unset($save);
					$save["snmp_query_graph_id"] = $data_query_graph_id;
					$save["data_template_id"] = resolve_hash_to_id($sub_item_array["data_template_id"], &$hash_cache);
					$save["data_template_rrd_id"] = resolve_hash_to_id($sub_item_array["data_template_rrd_id"], &$hash_cache);
					$save["snmp_field_name"] = $sub_item_array["snmp_field_name"];
					
					sql_save($save, "snmp_query_graph_rrd", array("snmp_query_graph_id", "data_template_id", "data_template_rrd_id"));
				}
			}
			
			/* import into: snmp_query_graph_sv */
			if (is_array($item_array["sv_graph"])) {
				while (list($sub_item_hash, $sub_item_array) = each($item_array["sv_graph"])) {
					/* parse information from the hash */
					$parsed_hash = parse_xml_hash($sub_item_hash);
					
					/* invalid/wrong hash */
					if ($parsed_hash == false) { return false; }
					
					unset($save);
					$_data_query_graph_sv_id = db_fetch_cell("select id from snmp_query_graph_sv where hash='" . $parsed_hash["hash"] . "' and snmp_query_graph_id=$data_query_graph_id");
					$save["id"] = (empty($_data_query_graph_sv_id) ? "0" : $_data_query_graph_sv_id);
					$save["hash"] = $parsed_hash["hash"];
					$save["snmp_query_graph_id"] = $data_query_graph_id;
					$save["sequence"] = $sub_item_array["sequence"];
					$save["field_name"] = $sub_item_array["field_name"];
					$save["text"] = $sub_item_array["text"];
					
					$data_query_graph_sv_id = sql_save($save, "snmp_query_graph_sv");
					
					$hash_cache["data_query_sv_graph"]{$parsed_hash["hash"]} = $data_query_graph_sv_id;
				}
			}
			
			/* import into: snmp_query_graph_rrd_sv */
			if (is_array($item_array["sv_data_source"])) {
				while (list($sub_item_hash, $sub_item_array) = each($item_array["sv_data_source"])) {
					/* parse information from the hash */
					$parsed_hash = parse_xml_hash($sub_item_hash);
					
					/* invalid/wrong hash */
					if ($parsed_hash == false) { return false; }
					
					unset($save);
					$_data_query_graph_rrd_sv_id = db_fetch_cell("select id from snmp_query_graph_rrd_sv where hash='" . $parsed_hash["hash"] . "' and snmp_query_graph_id=$data_query_graph_id");
					$save["id"] = (empty($_data_query_graph_rrd_sv_id) ? "0" : $_data_query_graph_rrd_sv_id);
					$save["hash"] = $parsed_hash["hash"];
					$save["snmp_query_graph_id"] = $data_query_graph_id;
					$save["data_template_id"] = resolve_hash_to_id($sub_item_array["data_template_id"], &$hash_cache);
					$save["sequence"] = $sub_item_array["sequence"];
					$save["field_name"] = $sub_item_array["field_name"];
					$save["text"] = $sub_item_array["text"];
					
					$data_query_graph_rrd_sv_id = sql_save($save, "snmp_query_graph_rrd_sv");
					
					$hash_cache["data_query_sv_data_source"]{$parsed_hash["hash"]} = $data_query_graph_rrd_sv_id;
				}
			}
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_data_query_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($data_query_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_gprint_preset($hash, &$xml_array, &$hash_cache) {
	global $fields_grprint_presets_edit;
	
	/* import into: graph_templates_gprint */
	$_gprint_preset_id = db_fetch_cell("select id from graph_templates_gprint where hash='$hash'");
	$save["id"] = (empty($_gprint_preset_id) ? "0" : $_gprint_preset_id);
	$save["hash"] = $hash;
	
	reset($fields_grprint_presets_edit);
	while (list($field_name, $field_array) = each($fields_grprint_presets_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			$save[$field_name] = $xml_array[$field_name];
		}
	}
	
	$gprint_preset_id = sql_save($save, "graph_templates_gprint");
	
	$hash_cache["gprint_preset"][$hash] = $gprint_preset_id;
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_gprint_preset_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($gprint_preset_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_round_robin_archive($hash, &$xml_array, &$hash_cache) {
	global $fields_rra_edit;
	
	/* import into: rra */
	$_rra_id = db_fetch_cell("select id from rra where hash='$hash'");
	$save["id"] = (empty($_rra_id) ? "0" : $_rra_id);
	$save["hash"] = $hash;
	
	reset($fields_rra_edit);
	while (list($field_name, $field_array) = each($fields_rra_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			$save[$field_name] = $xml_array[$field_name];
		}
	}
	
	$rra_id = sql_save($save, "rra");
	
	$hash_cache["round_robin_archive"][$hash] = $rra_id;
	
	/* import into: rra_cf */
	$hash_items = explode("|", $xml_array["cf_items"]);
	
	if (!empty($hash_items[0])) {
		for ($i=0; $i<count($hash_items); $i++) {
			db_execute("replace into rra_cf (rra_id,consolidation_function_id) values ($rra_id," . $hash_items[$i] . ")");
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_rra_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($rra_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_host_template($hash, &$xml_array, &$hash_cache) {
	global $fields_host_template_edit;
	
	/* import into: graph_templates_gprint */
	$_host_template_id = db_fetch_cell("select id from host_template where hash='$hash'");
	$save["id"] = (empty($_host_template_id) ? "0" : $_host_template_id);
	$save["hash"] = $hash;
	
	reset($fields_host_template_edit);
	while (list($field_name, $field_array) = each($fields_host_template_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			$save[$field_name] = $xml_array[$field_name];
		}
	}
	
	$host_template_id = sql_save($save, "host_template");
	
	$hash_cache["host_template"][$hash] = $host_template_id;
	
	/* import into: host_template_graph */
	$hash_items = explode("|", $xml_array["graph_templates"]);
	
	if (!empty($hash_items[0])) {
		for ($i=0; $i<count($hash_items); $i++) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($hash_items[$i]);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			if (isset($hash_cache["graph_template"]{$parsed_hash["hash"]})) {
				db_execute("replace into host_template_graph (host_template_id,graph_template_id) values ($host_template_id," . $hash_cache["graph_template"]{$parsed_hash["hash"]} . ")");
			}
		}
	}
	
	/* import into: host_template_snmp_query */
	$hash_items = explode("|", $xml_array["data_queries"]);
	
	if (!empty($hash_items[0])) {
		for ($i=0; $i<count($hash_items); $i++) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($hash_items[$i]);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			if (isset($hash_cache["data_query"]{$parsed_hash["hash"]})) {
				db_execute("replace into host_template_snmp_query (host_template_id,snmp_query_id) values ($host_template_id," . $hash_cache["data_query"]{$parsed_hash["hash"]} . ")");
			}
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_host_template_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($host_template_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_cdef($hash, &$xml_array, &$hash_cache) {
	global $fields_cdef_edit, $fields_cdef_item_edit;
	
	/* import into: cdef */
	$_cdef_id = db_fetch_cell("select id from cdef where hash='$hash'");
	$save["id"] = (empty($_cdef_id) ? "0" : $_cdef_id);
	$save["hash"] = $hash;
	
	reset($fields_cdef_edit);
	while (list($field_name, $field_array) = each($fields_cdef_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			$save[$field_name] = $xml_array[$field_name];
		}
	}
	
	$cdef_id = sql_save($save, "cdef");
	
	$hash_cache["cdef"][$hash] = $cdef_id;
	
	/* import into: cdef_items */
	if (is_array($xml_array["items"])) {
		while (list($item_hash, $item_array) = each($xml_array["items"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_cdef_item_id = db_fetch_cell("select id from cdef_items where hash='" . $parsed_hash["hash"] . "' and cdef_id=$cdef_id");
			$save["id"] = (empty($_cdef_item_id) ? "0" : $_cdef_item_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["cdef_id"] = $cdef_id;
			
			reset($fields_cdef_item_edit);
			while (list($field_name, $field_array) = each($fields_cdef_item_edit)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					$save[$field_name] = $item_array[$field_name];
				}
			}
			
			$cdef_item_id = sql_save($save, "cdef_items");
			
			$hash_cache["cdef_item"]{$parsed_hash["hash"]} = $cdef_item_id;
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_cdef_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($cdef_id) ? "fail" : "success");
	
	return $hash_cache;
}

function &xml_to_data_input_method($hash, &$xml_array, &$hash_cache) {
	global $fields_data_input_edit, $fields_data_input_field_edit, $fields_data_input_field_edit_1;
	
	/* aggregate field arrays */
	$fields_data_input_field_edit += $fields_data_input_field_edit_1;
	
	/* import into: data_input */
	$_data_input_id = db_fetch_cell("select id from data_input where hash='$hash'");
	$save["id"] = (empty($_data_input_id) ? "0" : $_data_input_id);
	$save["hash"] = $hash;
	
	reset($fields_data_input_edit);
	while (list($field_name, $field_array) = each($fields_data_input_edit)) {
		/* make sure this field exists in the xml array first */
		if (isset($xml_array[$field_name])) {
			$save[$field_name] = $xml_array[$field_name];
		}
	}
	
	$data_input_id = sql_save($save, "data_input");
	
	$hash_cache["data_input_method"][$hash] = $data_input_id;
	
	/* import into: data_input_fields */
	if (is_array($xml_array["fields"])) {
		while (list($item_hash, $item_array) = each($xml_array["fields"])) {
			/* parse information from the hash */
			$parsed_hash = parse_xml_hash($item_hash);
			
			/* invalid/wrong hash */
			if ($parsed_hash == false) { return false; }
			
			unset($save);
			$_data_input_field_id = db_fetch_cell("select id from data_input_fields where hash='" . $parsed_hash["hash"] . "' and data_input_id=$data_input_id");
			$save["id"] = (empty($_data_input_field_id) ? "0" : $_data_input_field_id);
			$save["hash"] = $parsed_hash["hash"];
			$save["data_input_id"] = $data_input_id;
			
			reset($fields_data_input_field_edit);
			while (list($field_name, $field_array) = each($fields_data_input_field_edit)) {
				/* make sure this field exists in the xml array first */
				if (isset($item_array[$field_name])) {
					$save[$field_name] = $item_array[$field_name];
				}
			}
			
			$data_input_field_id = sql_save($save, "data_input_fields");
			
			$hash_cache["data_input_field"]{$parsed_hash["hash"]} = $data_input_field_id;
		}
	}
	
	/* status information that will be presented to the user */ 
	$_SESSION["import_debug_info"]["type"] = (empty($_data_input_id) ? "new" : "update");
	$_SESSION["import_debug_info"]["title"] = $xml_array["name"];
	$_SESSION["import_debug_info"]["result"] = (empty($data_input_id) ? "fail" : "success");
	
	return $hash_cache;
}

function hash_to_friendly_name($hash, $display_type_name) {
	global $hash_type_names;
	
	/* parse information from the hash */
	$parsed_hash = parse_xml_hash($hash);
	
	/* invalid/wrong hash */
	if ($parsed_hash == false) { return false; }
	
	if ($display_type_name == true) {
		$prepend = "(<em>" . $hash_type_names{$parsed_hash["type"]} . "</em>) ";
	}else{
		$prepend = "";
	}
	
	switch ($parsed_hash["type"]) {
	case 'graph_template':
		return $prepend . db_fetch_cell("select name from graph_templates where hash='" . $parsed_hash["hash"] . "'");
	case 'data_template':
		return $prepend . db_fetch_cell("select name from data_template where hash='" . $parsed_hash["hash"] . "'");
	case 'data_template_item':
		return $prepend . db_fetch_cell("select data_source_name from data_template_rrd where hash='" . $parsed_hash["hash"] . "'");
	case 'host_template':
		return $prepend . db_fetch_cell("select name from host_template where hash='" . $parsed_hash["hash"] . "'");
	case 'data_input_method':
		return $prepend . db_fetch_cell("select name from data_input where hash='" . $parsed_hash["hash"] . "'");
	case 'data_input_field':
		return $prepend . db_fetch_cell("select name from data_input_fields where hash='" . $parsed_hash["hash"] . "'");
	case 'data_query':
		return $prepend . db_fetch_cell("select name from snmp_query where hash='" . $parsed_hash["hash"] . "'");
	case 'gprint_preset':
		return $prepend . db_fetch_cell("select name from graph_templates_gprint where hash='" . $parsed_hash["hash"] . "'");
	case 'cdef':
		return $prepend . db_fetch_cell("select name from cdef where hash='" . $parsed_hash["hash"] . "'");
	case 'round_robin_archive':
		return $prepend . db_fetch_cell("select name from rra where hash='" . $parsed_hash["hash"] . "'");
	}
}

function resolve_hash_to_id($hash, &$hash_cache_array) {
	/* parse information from the hash */
	$parsed_hash = parse_xml_hash($hash);
	
	/* invalid/wrong hash */
	if ($parsed_hash == false) { return false; }
	
	if (isset($hash_cache_array{$parsed_hash["type"]}{$parsed_hash["hash"]})) {
		$_SESSION["import_debug_info"]["dep"][$hash] = "met";
		return $hash_cache_array{$parsed_hash["type"]}{$parsed_hash["hash"]};
	}else{
		$_SESSION["import_debug_info"]["dep"][$hash] = "unmet";
		return 0;
	}
}

function parse_xml_hash($hash) {
	if (ereg("hash_([a-f0-9]{2})([a-f0-9]{4})([a-f0-9]{32})", $hash, $matches)) {
		$parsed_hash["type"] = check_hash_type($matches[1]);
		$parsed_hash["version"] = strval(check_hash_version($matches[2]));
		$parsed_hash["hash"] = $matches[3];
		
		/* an error has occured */
		if (($parsed_hash["type"] == false) || ($parsed_hash["version"] == false)) {
			return false;
		}
	}else{
		return false;
	}
	
	return $parsed_hash;
}

function check_hash_type($hash_type) {
	global $hash_type_codes;
	
	/* lets not mess up the pointer for other people */
	$local_hash_type_codes = $hash_type_codes;
	
	reset($local_hash_type_codes);
	while (list($type, $code) = each($local_hash_type_codes)) {
		if ($code == $hash_type) {
			$current_type = $type;
		}
	}
	
	if (!isset($current_type)) {
		// error: cannot find type
		return false;
	}
	
	return $current_type;
}

function check_hash_version($hash_version) {
	global $hash_version_codes, $config;
	
	$i = 0;
	
	reset($hash_version_codes);
	while (list($version, $code) = each($hash_version_codes)) {
		if ($version == $config["cacti_version"]) {
			$current_version_index = $i;
		}
		
		if ($code == $hash_version) {
			$hash_version_index = $i;
			$current_version = $version;
		}
		
		$i++;
	}
	
	if (!isset($current_version_index)) {
		// error: current cacti version does not exist!
		return false;
	}elseif (!isset($hash_version_index)) {
		// error: hash version does not exist!
		return false;
	}elseif ($hash_version_index > $current_version_index) {
		// error: hash made with a newer version of cacti
		return false;
	}
	
	return $current_version;
}

?>