mirror of
https://github.com/Cacti/cacti.git
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Larry Adams
c9a003abe6
git-svn-id: svn+ssh://repo.cacti.net/var/data/svnroot/cacti/branches/BRANCH_0_8_6/cacti@4001 860744bd-22fc-0310-8c96-e9fe5004b5ca
320 lines
13 KiB
PHP
320 lines
13 KiB
PHP
<?php
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/*
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+-------------------------------------------------------------------------+
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| Copyright (C) 2004-2007 The Cacti Group |
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| This program is free software; you can redistribute it and/or |
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| modify it under the terms of the GNU General Public License |
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| as published by the Free Software Foundation; either version 2 |
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| of the License, or (at your option) any later version. |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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+-------------------------------------------------------------------------+
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| Cacti: The Complete RRDTool-based Graphing Solution |
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+-------------------------------------------------------------------------+
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| This code is designed, written, and maintained by the Cacti Group. See |
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| about.php and/or the AUTHORS file for specific developer information. |
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+-------------------------------------------------------------------------+
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| http://www.cacti.net/ |
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+-------------------------------------------------------------------------+
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*/
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/* exec_poll - executes a command and returns its output
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@arg $command - the command to execute
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@returns - the output of $command after execution */
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function exec_poll($command) {
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global $config;
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if (function_exists("popen")) {
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if ($config["cacti_server_os"] == "unix") {
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$fp = popen($command, "r");
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}else{
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$fp = popen($command, "rb");
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}
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/* return if the popen command was not successfull */
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if ($fp == 0) {
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cacti_log("WARNING; Problem with POPEN command.");
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return "U";
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}
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$output = fgets($fp, 4096);
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pclose($fp);
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}else{
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$output = `$command`;
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}
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return $output;
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}
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/* exec_poll_php - sends a command to the php script server and returns the
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output
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@arg $command - the command to send to the php script server
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@arg $using_proc_function - whether or not this version of php is making use
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of the proc_open() and proc_close() functions (php 4.3+)
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@arg $pipes - the array of r/w pipes returned from proc_open()
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@arg $proc_fd - the file descriptor returned from proc_open()
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@returns - the output of $command after execution against the php script
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server */
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function exec_poll_php($command, $using_proc_function, $pipes, $proc_fd) {
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/* execute using php process */
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if ($using_proc_function == 1) {
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if (is_resource($proc_fd)) {
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/* $pipes now looks like this:
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* 0 => writeable handle connected to child stdin
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* 1 => readable handle connected to child stdout
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* 2 => any error output will be sent to child stderr */
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/* send command to the php server */
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fwrite($pipes[0], $command . "\r\n");
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$output = fgets($pipes[1], 4096);
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if (substr_count($output, "ERROR") > 0) {
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$output = "U";
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}
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}
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/* execute the old fashion way */
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}else{
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/* formulate command */
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$command = read_config_option("path_php_binary") . " " . $command;
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if (function_exists("popen")) {
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if ($config["cacti_server_os"] == "unix") {
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$fp = popen($command, "r");
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}else{
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$fp = popen($command, "rb");
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}
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/* return if the popen command was not successfull */
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if ($fp == 0) {
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cacti_log("WARNING; Problem with POPEN command.");
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return "U";
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}
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$output = fgets($fp, 4096);
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pclose($fp);
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}else{
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$output = `$command`;
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}
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}
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return $output;
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}
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/* exec_background - executes a program in the background so that php can continue
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to execute code in the foreground
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@arg $filename - the full pathname to the script to execute
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@arg $args - any additional arguments that must be passed onto the executable */
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function exec_background($filename, $args = "") {
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global $config;
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if (read_config_option("log_verbosity") == POLLER_VERBOSITY_DEBUG) {
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cacti_log("DEBUG: About to Spawn a Remote Process [CMD: $filename, ARGS: $args]", true, "POLLER");
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}
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if (file_exists($filename)) {
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if ($config["cacti_server_os"] == "win32") {
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pclose(popen("start \"Cactiplus\" /I \"" . $filename . "\" " . $args, "r"));
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}else{
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exec($filename . " " . $args . " > /dev/null &");
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}
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}elseif (file_exists_2gb($filename)) {
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exec($filename . " " . $args . " > /dev/null &");
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}
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}
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/* file_exists_2gb - fail safe version of the file exists function to correct
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for errors in certain versions of php.
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@arg $filename - the name of the file to be tested. */
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function file_exists_2gb($filename) {
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global $config;
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if ($config["cacti_server_os"] != "win32") {
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system("test -f $filename", $rval);
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return ($rval == 0);
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}else{
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return 0;
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}
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}
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/* update_reindex_cache - builds a cache that is used by the poller to determine if the
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indexes for a particular data query/host have changed
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@arg $host_id - the id of the host to which the data query belongs
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@arg $data_query_id - the id of the data query to rebuild the reindex cache for */
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function update_reindex_cache($host_id, $data_query_id) {
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global $config;
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include_once($config["library_path"] . "/data_query.php");
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include_once($config["library_path"] . "/snmp.php");
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/* will be used to keep track of sql statements to execute later on */
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$recache_stack = array();
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$host = db_fetch_row("select hostname, snmp_community, snmp_version, snmp_username, snmp_password, snmp_port, snmp_timeout from host where id=$host_id");
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$data_query = db_fetch_row("select reindex_method, sort_field from host_snmp_query where host_id=$host_id and snmp_query_id=$data_query_id");
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$data_query_type = db_fetch_cell("select data_input.type_id from (data_input,snmp_query) where data_input.id=snmp_query.data_input_id and snmp_query.id=$data_query_id");
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$data_query_xml = get_data_query_array($data_query_id);
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switch ($data_query["reindex_method"]) {
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case DATA_QUERY_AUTOINDEX_NONE:
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break;
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case DATA_QUERY_AUTOINDEX_BACKWARDS_UPTIME:
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/* the uptime backwards method requires snmp, so make sure snmp is actually enabled
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* on this device first */
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if ($host["snmp_community"] != "") {
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$assert_value = cacti_snmp_get($host["hostname"],
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$host["snmp_community"],
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".1.3.6.1.2.1.1.3.0",
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$host["snmp_version"],
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$host["snmp_username"],
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$host["snmp_password"],
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$host["snmp_port"],
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$host["snmp_timeout"],
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SNMP_POLLER);
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array_push($recache_stack, "insert into poller_reindex (host_id,data_query_id,action,op,assert_value,arg1) values ($host_id,$data_query_id,0,'<','$assert_value','.1.3.6.1.2.1.1.3.0')");
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}
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break;
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case DATA_QUERY_AUTOINDEX_INDEX_NUM_CHANGE:
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/* this method requires that some command/oid can be used to determine the
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* current number of indexes in the data query */
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$assert_value = sizeof(db_fetch_assoc("select snmp_index from host_snmp_cache where host_id=$host_id and snmp_query_id=$data_query_id group by snmp_index"));
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if ($data_query_type == DATA_INPUT_TYPE_SNMP_QUERY) {
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if (isset($data_query_xml["oid_num_indexes"])) {
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array_push($recache_stack, "insert into poller_reindex (host_id, data_query_id, action, op, assert_value, arg1) values ($host_id, $data_query_id, 0, '=', '$assert_value', '" . $data_query_xml["oid_num_indexes"] . "')");
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}
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}else if ($data_query_type == DATA_INPUT_TYPE_SCRIPT_QUERY) {
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if (isset($data_query_xml["arg_num_indexes"])) {
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array_push($recache_stack, "insert into poller_reindex (host_id, data_query_id, action, op, assert_value, arg1) values ($host_id, $data_query_id, 1, '=', '$assert_value', '" . get_script_query_path((isset($data_query_xml["arg_prepend"]) ? $data_query_xml["arg_prepend"] . " ": "") . $data_query_xml["arg_num_indexes"], $data_query_xml["script_path"], $host_id) . "')");
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}
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}
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break;
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case DATA_QUERY_AUTOINDEX_FIELD_VERIFICATION:
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$primary_indexes = db_fetch_assoc("select snmp_index,oid,field_value from host_snmp_cache where host_id=$host_id and snmp_query_id=$data_query_id and field_name='" . $data_query["sort_field"] . "'");
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if (sizeof($primary_indexes) > 0) {
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foreach ($primary_indexes as $index) {
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$assert_value = $index["field_value"];
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if ($data_query_type == DATA_INPUT_TYPE_SNMP_QUERY) {
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array_push($recache_stack, "insert into poller_reindex (host_id, data_query_id, action, op, assert_value, arg1) values ($host_id, $data_query_id, 0, '=', '$assert_value', '" . $data_query_xml["fields"]{$data_query["sort_field"]}["oid"] . "." . $index["snmp_index"] . "')");
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}else if ($data_query_type == DATA_INPUT_TYPE_SCRIPT_QUERY) {
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array_push($recache_stack, "insert into poller_reindex (host_id, data_query_id, action, op, assert_value, arg1) values ($host_id, $data_query_id, 1, '=', '$assert_value', '" . get_script_query_path((isset($data_query_xml["arg_prepend"]) ? $data_query_xml["arg_prepend"] . " ": "") . $data_query_xml["arg_get"] . " " . $data_query_xml["fields"]{$data_query["sort_field"]}["query_name"] . " " . $index["snmp_index"], $data_query_xml["script_path"], $host_id) . "')");
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}
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}
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}
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break;
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}
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/* save the delete for last since we need to reference this table in the code above */
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db_execute("delete from poller_reindex where host_id=$host_id and data_query_id=$data_query_id");
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for ($i=0; $i<count($recache_stack); $i++) {
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db_execute($recache_stack[$i]);
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}
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}
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/* process_poller_output - grabs data from the 'poller_output' table and feeds the *completed*
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results to RRDTool for processing
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@arg $rrdtool_pipe - the array of pipes containing the file descriptor for rrdtool
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@arg $remainder - don't use LIMIT if TRUE */
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function process_poller_output($rrdtool_pipe, $remainder = FALSE) {
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global $config;
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include_once($config["library_path"] . "/rrd.php");
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/* let's count the number of rrd files we processed */
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$rrds_processed = 0;
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if ($remainder) {
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$limit = "";
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}else{
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$limit = "LIMIT 10000";
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}
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/* create/update the rrd files */
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$results = db_fetch_assoc("select
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poller_output.output,
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poller_output.time,
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poller_output.local_data_id,
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poller_item.rrd_path,
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poller_item.rrd_name,
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poller_item.rrd_num
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from (poller_output,poller_item)
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where (poller_output.local_data_id=poller_item.local_data_id and poller_output.rrd_name=poller_item.rrd_name)
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$limit");
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if (sizeof($results) > 0) {
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/* create an array keyed off of each .rrd file */
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foreach ($results as $item) {
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$value = trim($item["output"]);
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$unix_time = strtotime($item["time"]);
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$rrd_update_array{$item["rrd_path"]}["local_data_id"] = $item["local_data_id"];
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/* single one value output */
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if ((is_numeric($value)) || ($value == "U")) {
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$rrd_update_array{$item["rrd_path"]}["times"][$unix_time]{$item["rrd_name"]} = $value;
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/* multiple value output */
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}else{
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$values = explode(" ", $value);
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$rrd_field_names = array_rekey(db_fetch_assoc("select
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data_template_rrd.data_source_name,
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data_input_fields.data_name
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from (data_template_rrd,data_input_fields)
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where data_template_rrd.data_input_field_id=data_input_fields.id
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and data_template_rrd.local_data_id=" . $item["local_data_id"]), "data_name", "data_source_name");
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for ($i=0; $i<count($values); $i++) {
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if (preg_match("/^([a-zA-Z0-9_\.-]+):([eE0-9\+\.-]+)$/", $values[$i], $matches)) {
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if (isset($rrd_field_names{$matches[1]})) {
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if (read_config_option("log_verbosity") == POLLER_VERBOSITY_DEBUG) {
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cacti_log("Parsed MULTI output field '" . $matches[0] . "' [map " . $matches[1] . "->" . $rrd_field_names{$matches[1]} . "]" , true, "POLLER");
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}
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$rrd_update_array{$item["rrd_path"]}["times"][$unix_time]{$rrd_field_names{$matches[1]}} = $matches[2];
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}
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}
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}
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}
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/* fallback values */
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if ((!isset($rrd_update_array{$item["rrd_path"]}["times"][$unix_time])) && ($item["rrd_name"] != "")) {
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$rrd_update_array{$item["rrd_path"]}["times"][$unix_time]{$item["rrd_name"]} = "U";
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}else if ((!isset($rrd_update_array{$item["rrd_path"]}["times"][$unix_time])) && ($item["rrd_name"] == "")) {
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unset($rrd_update_array{$item["rrd_path"]});
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}
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}
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/* make sure each .rrd file has complete data */
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reset($results);
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foreach ($results as $item) {
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$unix_time = strtotime($item["time"]);
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if (isset($rrd_update_array{$item["rrd_path"]}["times"][$unix_time])) {
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if ($item["rrd_num"] <= sizeof($rrd_update_array{$item["rrd_path"]}["times"][$unix_time])) {
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db_execute("delete from poller_output where local_data_id='" . $item["local_data_id"] . "' and rrd_name='" . $item["rrd_name"] . "' and time='" . $item["time"] . "'");
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}else{
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unset($rrd_update_array{$item["rrd_path"]}["times"][$unix_time]);
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}
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}
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}
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$rrds_processed = rrdtool_function_update($rrd_update_array, $rrdtool_pipe);
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}
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return $rrds_processed;
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}
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?>
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