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<?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/ |
+-------------------------------------------------------------------------+
*/
define("REGEXP_SNMP_TRIM", "(hex|counter(32|64)|gauge|gauge(32|64)|float|ipaddress|string|integer):");
/* we must use an apostrophe to escape community names under Unix in case the user uses
characters that the shell might interpret. the ucd-snmp binaries on Windows flip out when
you do this, but are perfectly happy with a quotation mark. */
if ($config["cacti_server_os"] == "unix") {
define("SNMP_ESCAPE_CHARACTER", "'");
}else{
define("SNMP_ESCAPE_CHARACTER", "\"");
}
function cacti_snmp_get($hostname, $community, $oid, $version, $username, $password, $port = 161, $timeout = 500, $environ = SNMP_POLLER) {
global $config;
$retries = read_config_option("snmp_retries");
if ($retries == "") $retries = 3;
/* always use SNMP version 1 for UI stuff */
if ($environ == SNMP_WEBUI) {
$version = "1";
}
if (($config["php_snmp_support"] == true) && ($version == "1")) {
/* make sure snmp* is verbose so we can see what types of data
we are getting back */
snmp_set_quick_print(0);
$snmp_value = @snmpget("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
}else{
/* ucd/net snmp want the timeout in seconds */
$timeout = ceil($timeout / 1000);
if ($version == "1") {
$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
}elseif ($version == "2") {
$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
$version = "2c"; /* ucd/net snmp prefers this over '2' */
}elseif ($version == "3") {
$snmp_auth = "-u $username -l authPriv -a MD5 -A $password -x DES -X $password"; /* v3 - username/password */
}
/* no valid snmp version has been set, get out */
if (empty($snmp_auth)) { return; }
if (read_config_option("snmp_version") == "ucd-snmp") {
exec(read_config_option("path_snmpget") . " -O vt -v$version -t $timeout -r $retries $hostname:$port $snmp_auth $oid", $snmp_value);
}elseif (read_config_option("snmp_version") == "net-snmp") {
exec(read_config_option("path_snmpget") . " -O vt $snmp_auth -v $version -t $timeout -r $retries $hostname:$port $oid", $snmp_value);
}
}
if (isset($snmp_value)) {
/* fix for multi-line snmp output */
if (is_array($snmp_value)) {
$snmp_value = implode(" ", $snmp_value);
}
/* strip out non-snmp data */
$snmp_value = format_snmp_string($snmp_value);
return $snmp_value;
}
}
function cacti_snmp_walk($hostname, $community, $oid, $version, $username, $password, $port = 161, $timeout = 500, $environ = SNMP_POLLER) {
global $config;
$snmp_array = array();
$temp_array = array();
$retries = read_config_option("snmp_retries");
if ($retries == "") $retries = 3;
/* always use SNMP version 1 for UI stuff */
if ($environ == SNMP_WEBUI) {
$version = "1";
}
if (($config["php_snmp_support"] == true) && ($version == "1")) {
$temp_array = @snmpwalkoid("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
$o = 0;
for (@reset($temp_array); $i = @key($temp_array); next($temp_array)) {
$snmp_array[$o]["oid"] = ereg_replace("^\.", "", $i);
$snmp_array[$o]["value"] = format_snmp_string($temp_array[$i]);
$o++;
}
}else{
/* ucd/net snmp want the timeout in seconds */
$timeout = ceil($timeout / 1000);
if ($version == "1") {
$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
}elseif ($version == "2") {
$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
$version = "2c"; /* ucd/net snmp prefers this over '2' */
}elseif ($version == "3") {
$snmp_auth = "-u $username -l authPriv -a MD5 -A $password -x DES -X $password"; /* v3 - username/password */
}
if (read_config_option("snmp_version") == "ucd-snmp") {
$temp_array = exec_into_array(read_config_option("path_snmpwalk") . " -v$version -t $timeout -r $retries $hostname:$port $snmp_auth $oid");
}elseif (read_config_option("snmp_version") == "net-snmp") {
$temp_array = exec_into_array(read_config_option("path_snmpwalk") . " $snmp_auth -v $version -t $timeout -r $retries $hostname:$port $oid");
}
if (sizeof($temp_array) == 0) {
return array();
}
for ($i=0; $i < count($temp_array); $i++) {
$snmp_array[$i]["oid"] = trim(ereg_replace("(.*) =.*", "\\1", $temp_array[$i]));
$snmp_array[$i]["value"] = format_snmp_string($temp_array[$i]);
}
}
return $snmp_array;
}
function format_snmp_string($string) {
/* strip off all leading junk (the oid and stuff) */
$string = trim(ereg_replace(".*= ?", "", $string));
/* remove ALL quotes */
$string = str_replace("\"", "", $string);
$string = str_replace("'", "", $string);
$string = str_replace(">", "", $string);
$string = str_replace("<", "", $string);
$string = str_replace("\\", "", $string);
if (preg_match("/(hex:\?)?([a-fA-F0-9]{1,2}(:|\s)){5}/", $string)) {
$octet = "";
/* strip of the 'hex:' */
$string = eregi_replace("hex: ?", "", $string);
/* split the hex on the delimiter */
$octets = preg_split("/\s|:/", $string);
/* loop through each octet and format it accordingly */
for ($i=0;($i<count($octets));$i++) {
$octet .= str_pad($octets[$i], 2, "0", STR_PAD_LEFT);
if (($i+1) < count($octets)) {
$octet .= ":";
}
}
/* copy the final result and make it upper case */
$string = strtoupper($octet);
}elseif (preg_match("/Timeticks:\s\((\d+)\)\s/", $string, $matches)) {
$string = $matches[1];
}
$string = eregi_replace(REGEXP_SNMP_TRIM, "", $string);
return trim($string);
}
?>
|
