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snmp.c
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snmp.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Mike Jackson <mhjack@tscnet.com> |
| Steven Lawrance <slawrance@technologist.com> |
| Harrie Hazewinkel <harrie@lisanza.net> |
| Johann Hanne <jonny@nurfuerspam.de> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "ext/standard/info.h"
#include "php_snmp.h"
#if HAVE_SNMP
#include <sys/types.h>
#ifdef PHP_WIN32
#include <winsock2.h>
#include <errno.h>
#include <process.h>
#include "win32/time.h"
#elif defined(NETWARE)
#ifdef USE_WINSOCK
#include <novsock2.h>
#else
#include <sys/socket.h>
#endif
#include <errno.h>
#include <sys/timeval.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifndef _OSD_POSIX
#include <sys/errno.h>
#else
#include <errno.h> /* BS2000/OSD uses <errno.h>, not <sys/errno.h> */
#endif
#include <netdb.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef __P
#ifdef __GNUC__
#define __P(args) args
#else
#define __P(args) ()
#endif
#endif
#ifdef HAVE_NET_SNMP
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#else
#ifdef HAVE_DEFAULT_STORE_H
#include "default_store.h"
#endif
#include "asn1.h"
#include "snmp_api.h"
#include "snmp_client.h"
#include "snmp_impl.h"
#include "snmp.h"
#include "snmpv3.h"
#include "keytools.h"
#include "parse.h"
#include "mib.h"
#ifndef PHP_WIN32
/* this doesn't appear to be needed under win32 (perhaps at all)
* and the header file is not present in my UCD-SNMP headers */
# include "version.h"
#endif
#include "transform_oids.h"
#endif
/* Ugly macro, since the length of OIDs in UCD-SNMP and NET-SNMP
* is different and this way the code is not full of 'ifdef's.
*/
#define OIDSIZE(p) (sizeof(p)/sizeof(oid))
/* For really old ucd-snmp versions.. */
#ifndef HAVE_SNMP_PARSE_OID
#define snmp_parse_oid read_objid
#endif
#define SNMP_VALUE_LIBRARY 0
#define SNMP_VALUE_PLAIN 1
#define SNMP_VALUE_OBJECT 2
ZEND_DECLARE_MODULE_GLOBALS(snmp)
static PHP_GINIT_FUNCTION(snmp);
/* constant - can be shared among threads */
static oid objid_mib[] = {1, 3, 6, 1, 2, 1};
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmpget, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmpgetnext, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmpwalk, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmprealwalk, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_get_quick_print, 0, 0, 1)
ZEND_ARG_INFO(0, d)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_set_quick_print, 0, 0, 1)
ZEND_ARG_INFO(0, quick_print)
ZEND_END_ARG_INFO()
#ifdef HAVE_NET_SNMP
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_set_enum_print, 0, 0, 1)
ZEND_ARG_INFO(0, enum_print)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_set_oid_output_format, 0, 0, 1)
ZEND_ARG_INFO(0, oid_format)
ZEND_END_ARG_INFO()
#endif
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmpset, 0, 0, 5)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, type)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp2_get, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp2_getnext, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp2_walk, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp2_real_walk, 0, 0, 3)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp2_set, 0, 0, 5)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, community)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, type)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_php_snmpv3, 0, 0, 2)
ZEND_ARG_INFO(0, s)
ZEND_ARG_INFO(0, st)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp3_get, 0, 0, 8)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, sec_name)
ZEND_ARG_INFO(0, sec_level)
ZEND_ARG_INFO(0, auth_protocol)
ZEND_ARG_INFO(0, auth_passphrase)
ZEND_ARG_INFO(0, priv_protocol)
ZEND_ARG_INFO(0, priv_passphrase)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp3_getnext, 0, 0, 8)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, sec_name)
ZEND_ARG_INFO(0, sec_level)
ZEND_ARG_INFO(0, auth_protocol)
ZEND_ARG_INFO(0, auth_passphrase)
ZEND_ARG_INFO(0, priv_protocol)
ZEND_ARG_INFO(0, priv_passphrase)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp3_walk, 0, 0, 8)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, sec_name)
ZEND_ARG_INFO(0, sec_level)
ZEND_ARG_INFO(0, auth_protocol)
ZEND_ARG_INFO(0, auth_passphrase)
ZEND_ARG_INFO(0, priv_protocol)
ZEND_ARG_INFO(0, priv_passphrase)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp3_real_walk, 0, 0, 8)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, sec_name)
ZEND_ARG_INFO(0, sec_level)
ZEND_ARG_INFO(0, auth_protocol)
ZEND_ARG_INFO(0, auth_passphrase)
ZEND_ARG_INFO(0, priv_protocol)
ZEND_ARG_INFO(0, priv_passphrase)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp3_set, 0, 0, 10)
ZEND_ARG_INFO(0, host)
ZEND_ARG_INFO(0, sec_name)
ZEND_ARG_INFO(0, sec_level)
ZEND_ARG_INFO(0, auth_protocol)
ZEND_ARG_INFO(0, auth_passphrase)
ZEND_ARG_INFO(0, priv_protocol)
ZEND_ARG_INFO(0, priv_passphrase)
ZEND_ARG_INFO(0, object_id)
ZEND_ARG_INFO(0, type)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, timeout)
ZEND_ARG_INFO(0, retries)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_set_valueretrieval, 0, 0, 1)
ZEND_ARG_INFO(0, method)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_snmp_get_valueretrieval, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_snmp_read_mib, 0, 0, 1)
ZEND_ARG_INFO(0, filename)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ snmp_functions[]
*/
const zend_function_entry snmp_functions[] = {
PHP_FE(snmpget, arginfo_snmpget)
PHP_FE(snmpgetnext, arginfo_snmpgetnext)
PHP_FE(snmpwalk, arginfo_snmpwalk)
PHP_FE(snmprealwalk, arginfo_snmprealwalk)
PHP_FALIAS(snmpwalkoid, snmprealwalk, arginfo_snmprealwalk)
PHP_FE(snmp_get_quick_print, arginfo_snmp_get_quick_print)
PHP_FE(snmp_set_quick_print, arginfo_snmp_set_quick_print)
#ifdef HAVE_NET_SNMP
PHP_FE(snmp_set_enum_print, arginfo_snmp_set_enum_print)
PHP_FE(snmp_set_oid_output_format, arginfo_snmp_set_oid_output_format)
PHP_FALIAS(snmp_set_oid_numeric_print, snmp_set_oid_output_format, arginfo_snmp_set_oid_output_format)
#endif
PHP_FE(snmpset, arginfo_snmpset)
PHP_FE(snmp2_get, arginfo_snmp2_get)
PHP_FE(snmp2_getnext, arginfo_snmp2_getnext)
PHP_FE(snmp2_walk, arginfo_snmp2_walk)
PHP_FE(snmp2_real_walk, arginfo_snmp2_real_walk)
PHP_FE(snmp2_set, arginfo_snmp2_set)
PHP_FE(snmp3_get, arginfo_snmp3_get)
PHP_FE(snmp3_getnext, arginfo_snmp3_getnext)
PHP_FE(snmp3_walk, arginfo_snmp3_walk)
PHP_FE(snmp3_real_walk, arginfo_snmp3_real_walk)
PHP_FE(snmp3_set, arginfo_snmp3_set)
PHP_FE(snmp_set_valueretrieval, arginfo_snmp_set_valueretrieval)
PHP_FE(snmp_get_valueretrieval, arginfo_snmp_get_valueretrieval)
PHP_FE(snmp_read_mib, arginfo_snmp_read_mib)
PHP_FE_END
};
/* }}} */
#define SNMP_CMD_GET 1
#define SNMP_CMD_GETNEXT 2
#define SNMP_CMD_WALK 3
#define SNMP_CMD_REALWALK 4
#define SNMP_CMD_SET 11
/* {{{ snmp_module_entry
*/
zend_module_entry snmp_module_entry = {
STANDARD_MODULE_HEADER,
"snmp",
snmp_functions,
PHP_MINIT(snmp),
PHP_MSHUTDOWN(snmp),
NULL,
NULL,
PHP_MINFO(snmp),
NO_VERSION_YET,
PHP_MODULE_GLOBALS(snmp),
PHP_GINIT(snmp),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
#ifdef COMPILE_DL_SNMP
ZEND_GET_MODULE(snmp)
#endif
/* THREAD_LS snmp_module php_snmp_module; - may need one of these at some point */
/* {{{ PHP_GINIT_FUNCTION
*/
static PHP_GINIT_FUNCTION(snmp)
{
snmp_globals->valueretrieval = SNMP_VALUE_LIBRARY;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(snmp)
{
init_snmp("snmpapp");
#ifdef NETSNMP_DS_LIB_DONT_PERSIST_STATE
/* Prevent update of the snmpapp.conf file */
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DONT_PERSIST_STATE, 1);
#endif
#ifdef HAVE_NET_SNMP
REGISTER_LONG_CONSTANT("SNMP_OID_OUTPUT_FULL", NETSNMP_OID_OUTPUT_FULL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_OID_OUTPUT_NUMERIC", NETSNMP_OID_OUTPUT_NUMERIC, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SNMP_VALUE_LIBRARY", SNMP_VALUE_LIBRARY, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_VALUE_PLAIN", SNMP_VALUE_PLAIN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_VALUE_OBJECT", SNMP_VALUE_OBJECT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_BIT_STR", ASN_BIT_STR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_OCTET_STR", ASN_OCTET_STR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_OPAQUE", ASN_OPAQUE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_NULL", ASN_NULL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_OBJECT_ID", ASN_OBJECT_ID, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_IPADDRESS", ASN_IPADDRESS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_COUNTER", ASN_GAUGE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_UNSIGNED", ASN_UNSIGNED, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_TIMETICKS", ASN_TIMETICKS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_UINTEGER", ASN_UINTEGER, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_INTEGER", ASN_INTEGER, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SNMP_COUNTER64", ASN_COUNTER64, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(snmp)
{
snmp_shutdown("snmpapp");
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(snmp)
{
php_info_print_table_start();
#ifdef HAVE_NET_SNMP
php_info_print_table_row(2, "NET-SNMP Support", "enabled");
php_info_print_table_row(2, "NET-SNMP Version", netsnmp_get_version());
#else
php_info_print_table_row(2, "UCD-SNMP Support", "enabled");
php_info_print_table_row(2, "UCD-SNMP Version", VersionInfo);
#endif
php_info_print_table_end();
}
/* }}} */
static void php_snmp_getvalue(struct variable_list *vars, zval *snmpval TSRMLS_DC)
{
zval *val;
#if I64CHARSZ > 2047
char buf[I64CHARSZ + 1];
#else
char buf[2048];
#endif
buf[0] = 0;
if (SNMP_G(valueretrieval) == SNMP_VALUE_LIBRARY) {
#ifdef HAVE_NET_SNMP
snprint_value(buf, sizeof(buf), vars->name, vars->name_length, vars);
#else
sprint_value(buf,vars->name, vars->name_length, vars);
#endif
ZVAL_STRING(snmpval, buf, 1);
return;
}
MAKE_STD_ZVAL(val);
switch (vars->type) {
case ASN_BIT_STR: /* 0x03, asn1.h */
ZVAL_STRINGL(val, vars->val.bitstring, vars->val_len, 1);
break;
case ASN_OCTET_STR: /* 0x04, asn1.h */
case ASN_OPAQUE: /* 0x44, snmp_impl.h */
ZVAL_STRINGL(val, vars->val.string, vars->val_len, 1);
break;
case ASN_NULL: /* 0x05, asn1.h */
ZVAL_NULL(val);
break;
case ASN_OBJECT_ID: /* 0x06, asn1.h */
#ifdef HAVE_NET_SNMP
snprint_objid(buf, sizeof(buf), vars->val.objid, vars->val_len / sizeof(oid));
#else
sprint_objid(buf, vars->val.objid, vars->val_len / sizeof(oid));
#endif
ZVAL_STRING(val, buf, 1);
break;
case ASN_IPADDRESS: /* 0x40, snmp_impl.h */
snprintf(buf, sizeof(buf)-1, "%d.%d.%d.%d",
(vars->val.string)[0], (vars->val.string)[1],
(vars->val.string)[2], (vars->val.string)[3]);
buf[sizeof(buf)-1]=0;
ZVAL_STRING(val, buf, 1);
break;
case ASN_COUNTER: /* 0x41, snmp_impl.h */
case ASN_GAUGE: /* 0x42, snmp_impl.h */
/* ASN_UNSIGNED is the same as ASN_GAUGE */
case ASN_TIMETICKS: /* 0x43, snmp_impl.h */
case ASN_UINTEGER: /* 0x47, snmp_impl.h */
snprintf(buf, sizeof(buf)-1, "%lu", *vars->val.integer);
buf[sizeof(buf)-1]=0;
ZVAL_STRING(val, buf, 1);
break;
case ASN_INTEGER: /* 0x02, asn1.h */
snprintf(buf, sizeof(buf)-1, "%ld", *vars->val.integer);
buf[sizeof(buf)-1]=0;
ZVAL_STRING(val, buf, 1);
break;
case ASN_COUNTER64: /* 0x46, snmp_impl.h */
printU64(buf, vars->val.counter64);
ZVAL_STRING(val, buf, 1);
break;
default:
ZVAL_STRING(val, "Unknown value type", 1);
break;
}
if (SNMP_G(valueretrieval) == SNMP_VALUE_PLAIN) {
*snmpval = *val;
zval_copy_ctor(snmpval);
} else {
object_init(snmpval);
add_property_long(snmpval, "type", vars->type);
add_property_zval(snmpval, "value", val);
}
}
/* {{{ php_snmp_internal
*
* Generic SNMP object fetcher (for all SNMP versions)
*
* st=SNMP_CMD_GET get - query an agent with SNMP-GET.
* st=SNMP_CMD_GETNEXT getnext - query an agent with SNMP-GETNEXT.
* st=SNMP_CMD_WALK walk - walk the mib and return a single dimensional array
* containing the values.
* st=SNMP_CMD_REALWALK realwalk() and walkoid() - walk the mib and return an
* array of oid,value pairs.
* st=SNMP_CMD_SET set() - query an agent and set a single value
*
*/
static void php_snmp_internal(INTERNAL_FUNCTION_PARAMETERS, int st,
struct snmp_session *session,
char *objid,
char type,
char* value)
{
struct snmp_session *ss;
struct snmp_pdu *pdu=NULL, *response;
struct variable_list *vars;
oid name[MAX_NAME_LEN];
size_t name_length;
oid root[MAX_NAME_LEN];
size_t rootlen = 0;
int gotroot = 0;
int status, count;
char buf[2048];
char buf2[2048];
int keepwalking=1;
char *err;
zval *snmpval = NULL;
if (st >= SNMP_CMD_WALK) { /* walk */
rootlen = MAX_NAME_LEN;
if (strlen(objid)) { /* on a walk, an empty string means top of tree - no error */
if (snmp_parse_oid(objid, root, &rootlen)) {
gotroot = 1;
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid object identifier: %s", objid);
}
}
if (!gotroot) {
memmove((char *) root, (char *) objid_mib, sizeof(objid_mib));
rootlen = sizeof(objid_mib) / sizeof(oid);
gotroot = 1;
}
}
if ((ss = snmp_open(session)) == NULL) {
snmp_error(session, NULL, NULL, &err);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not open snmp connection: %s", err);
free(err);
RETURN_FALSE;
}
if (st >= SNMP_CMD_WALK) {
memmove((char *)name, (char *)root, rootlen * sizeof(oid));
name_length = rootlen;
switch(st) {
case SNMP_CMD_WALK:
case SNMP_CMD_REALWALK:
array_init(return_value);
break;
default:
RETVAL_TRUE;
break;
}
}
while (keepwalking) {
keepwalking = 0;
if ((st == SNMP_CMD_GET) || (st == SNMP_CMD_GETNEXT)) {
name_length = MAX_OID_LEN;
if (!snmp_parse_oid(objid, name, &name_length)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid object identifier: %s", objid);
snmp_close(ss);
RETURN_FALSE;
}
pdu = snmp_pdu_create((st == SNMP_CMD_GET) ? SNMP_MSG_GET : SNMP_MSG_GETNEXT);
snmp_add_null_var(pdu, name, name_length);
} else if (st == SNMP_CMD_SET) {
pdu = snmp_pdu_create(SNMP_MSG_SET);
if (snmp_add_var(pdu, name, name_length, type, value)) {
#ifdef HAVE_NET_SNMP
snprint_objid(buf, sizeof(buf), name, name_length);
#else
sprint_objid(buf, name, name_length);
#endif
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not add variable: %s %c %s", buf, type, value);
snmp_free_pdu(pdu);
snmp_close(ss);
RETURN_FALSE;
}
} else if (st >= SNMP_CMD_WALK) {
if (session->version == SNMP_VERSION_1) {
pdu = snmp_pdu_create(SNMP_MSG_GETNEXT);
} else {
pdu = snmp_pdu_create(SNMP_MSG_GETBULK);
pdu->non_repeaters = 0;
pdu->max_repetitions = 20;
}
snmp_add_null_var(pdu, name, name_length);
}
retry:
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS) {
if (response->errstat == SNMP_ERR_NOERROR) {
for (vars = response->variables; vars; vars = vars->next_variable) {
if (st >= SNMP_CMD_WALK && st != SNMP_CMD_SET &&
(vars->name_length < rootlen || memcmp(root, vars->name, rootlen * sizeof(oid)))) {
continue; /* not part of this subtree */
}
if (st != SNMP_CMD_SET) {
MAKE_STD_ZVAL(snmpval);
php_snmp_getvalue(vars, snmpval TSRMLS_CC);
}
if (st == SNMP_CMD_GET) {
*return_value = *snmpval;
zval_copy_ctor(return_value);
zval_ptr_dtor(&snmpval);
snmp_free_pdu(response);
snmp_close(ss);
return;
} else if (st == SNMP_CMD_GETNEXT) {
*return_value = *snmpval;
zval_copy_ctor(return_value);
snmp_free_pdu(response);
snmp_close(ss);
return;
} else if (st == SNMP_CMD_WALK) {
add_next_index_zval(return_value,snmpval); /* Add to returned array */
} else if (st == SNMP_CMD_REALWALK && vars->type != SNMP_ENDOFMIBVIEW && vars->type != SNMP_NOSUCHOBJECT && vars->type != SNMP_NOSUCHINSTANCE) {
#ifdef HAVE_NET_SNMP
snprint_objid(buf2, sizeof(buf2), vars->name, vars->name_length);
#else
sprint_objid(buf2, vars->name, vars->name_length);
#endif
add_assoc_zval(return_value,buf2,snmpval);
}
if (st >= SNMP_CMD_WALK && st != SNMP_CMD_SET) {
if (vars->type != SNMP_ENDOFMIBVIEW &&
vars->type != SNMP_NOSUCHOBJECT && vars->type != SNMP_NOSUCHINSTANCE) {
if (snmp_oid_compare(name, name_length, vars->name, vars->name_length) >= 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error: OID not increasing: %s",name);
keepwalking = 0;
} else {
memmove((char *)name, (char *)vars->name,vars->name_length * sizeof(oid));
name_length = vars->name_length;
keepwalking = 1;
}
}
}
}
} else {
if ((st != SNMP_CMD_WALK && st != SNMP_CMD_REALWALK) || response->errstat != SNMP_ERR_NOSUCHNAME) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error in packet: %s", snmp_errstring(response->errstat));
if (response->errstat == SNMP_ERR_NOSUCHNAME) {
for (count=1, vars = response->variables; vars && count != response->errindex;
vars = vars->next_variable, count++);
if (vars) {
#ifdef HAVE_NET_SNMP
snprint_objid(buf, sizeof(buf), vars->name, vars->name_length);
#else
sprint_objid(buf,vars->name, vars->name_length);
#endif
}
php_error_docref(NULL TSRMLS_CC, E_WARNING, "This name does not exist: %s",buf);
}
if (st == SNMP_CMD_GET) {
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_GET)) != NULL) {
snmp_free_pdu(response);
goto retry;
}
} else if (st == SNMP_CMD_SET) {
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_SET)) != NULL) {
snmp_free_pdu(response);
goto retry;
}
} else if (st == SNMP_CMD_GETNEXT) {
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_GETNEXT)) != NULL) {
snmp_free_pdu(response);
goto retry;
}
} else if (st >= SNMP_CMD_WALK) { /* Here we do walks. */
if ((pdu = snmp_fix_pdu(response, ((session->version == SNMP_VERSION_1)
? SNMP_MSG_GETNEXT
: SNMP_MSG_GETBULK))) != NULL) {
snmp_free_pdu(response);
goto retry;
}
}
snmp_free_pdu(response);
snmp_close(ss);
if (st == SNMP_CMD_WALK || st == SNMP_CMD_REALWALK) {
zval_dtor(return_value);
}
RETURN_FALSE;
}
}
} else if (status == STAT_TIMEOUT) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No response from %s", session->peername);
if (st == SNMP_CMD_WALK || st == SNMP_CMD_REALWALK) {
zval_dtor(return_value);
}
snmp_close(ss);
RETURN_FALSE;
} else { /* status == STAT_ERROR */
php_error_docref(NULL TSRMLS_CC, E_WARNING, "An error occurred, quitting");
if (st == SNMP_CMD_WALK || st == SNMP_CMD_REALWALK) {
zval_dtor(return_value);
}
snmp_close(ss);
RETURN_FALSE;
}
if (response) {
snmp_free_pdu(response);
}
} /* keepwalking */
snmp_close(ss);
}
/* }}} */
/* {{{ php_snmp
*
* Generic community based SNMP handler for version 1 and 2.
* This function makes use of the internal SNMP object fetcher.
* The object fetcher is shared with SNMPv3.
*
* st=SNMP_CMD_GET get - query an agent with SNMP-GET.
* st=SNMP_CMD_GETNEXT getnext - query an agent with SNMP-GETNEXT.
* st=SNMP_CMD_WALK walk - walk the mib and return a single dimensional array
* containing the values.
* st=SNMP_CMD_REALWALK realwalk() and walkoid() - walk the mib and return an
* array of oid,value pairs.
* st=5-8 ** Reserved **
* st=SNMP_CMD_SET set() - query an agent and set a single value
*
*/
static void php_snmp(INTERNAL_FUNCTION_PARAMETERS, int st, int version)
{
char *a1, *a2, *a3;
int a1_len, a2_len, a3_len;
struct snmp_session session;
long timeout = SNMP_DEFAULT_TIMEOUT;
long retries = SNMP_DEFAULT_RETRIES;
char type = (char) 0;
char *value = (char *) 0, *stype = "";
int value_len, stype_len;
char hostname[MAX_NAME_LEN];
int remote_port = 161;
char *pptr;
int argc = ZEND_NUM_ARGS();
if (st == SNMP_CMD_SET) {
if (zend_parse_parameters(argc TSRMLS_CC, "sssss|ll", &a1, &a1_len, &a2, &a2_len, &a3, &a3_len, &stype, &stype_len, &value, &value_len, &timeout, &retries) == FAILURE) {
return;
}
} else {
/* SNMP_CMD_GET
* SNMP_CMD_GETNEXT
* SNMP_CMD_WALK
* SNMP_CMD_REALWALK
*/
if (zend_parse_parameters(argc TSRMLS_CC, "sss|ll", &a1, &a1_len, &a2, &a2_len, &a3, &a3_len, &timeout, &retries) == FAILURE) {
return;
}
}
if (st == SNMP_CMD_SET) {
type = stype[0];
}
snmp_sess_init(&session);
strlcpy(hostname, a1, sizeof(hostname));
if ((pptr = strchr (hostname, ':'))) {
remote_port = strtol (pptr + 1, NULL, 0);
}
session.peername = hostname;
session.remote_port = remote_port;
session.version = version;
/*
* FIXME: potential memory leak
* This is a workaround for an "artifact" (Mike Slifcak)
* in (at least) ucd-snmp 3.6.1 which frees
* memory it did not allocate
*/
#ifdef UCD_SNMP_HACK
session.community = (u_char *)strdup(a2); /* memory freed by SNMP library, strdup NOT estrdup */
#else
session.community = (u_char *)a2;
#endif
session.community_len = a2_len;
session.retries = retries;
session.timeout = timeout;
session.authenticator = NULL;
php_snmp_internal(INTERNAL_FUNCTION_PARAM_PASSTHRU, st, &session, a3, type, value);
}
/* }}} */
/* {{{ proto string snmpget(string host, string community, string object_id [, int timeout [, int retries]])
Fetch a SNMP object */
PHP_FUNCTION(snmpget)
{
php_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,SNMP_CMD_GET, SNMP_VERSION_1);
}
/* }}} */
/* {{{ proto string snmpgetnext(string host, string community, string object_id [, int timeout [, int retries]])
Fetch a SNMP object */
PHP_FUNCTION(snmpgetnext)
{
php_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,SNMP_CMD_GETNEXT, SNMP_VERSION_1);
}
/* }}} */
/* {{{ proto array snmpwalk(string host, string community, string object_id [, int timeout [, int retries]])
Return all objects under the specified object id */
PHP_FUNCTION(snmpwalk)
{
php_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,SNMP_CMD_WALK, SNMP_VERSION_1);
}
/* }}} */
/* {{{ proto array snmprealwalk(string host, string community, string object_id [, int timeout [, int retries]])
Return all objects including their respective object id withing the specified one */
PHP_FUNCTION(snmprealwalk)
{
php_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,SNMP_CMD_REALWALK, SNMP_VERSION_1);
}
/* }}} */
/* {{{ proto bool snmp_get_quick_print(void)
Return the current status of quick_print */
PHP_FUNCTION(snmp_get_quick_print)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
#ifdef HAVE_NET_SNMP
RETURN_BOOL(netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICK_PRINT));
#else
RETURN_BOOL(snmp_get_quick_print());
#endif
}
/* }}} */
/* {{{ proto void snmp_set_quick_print(int quick_print)
Return all objects including their respective object id withing the specified one */
PHP_FUNCTION(snmp_set_quick_print)
{
long a1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &a1) == FAILURE) {
return;
}
#ifdef HAVE_NET_SNMP
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICK_PRINT, (int) a1);
#else
snmp_set_quick_print((int)a1);
#endif
}
/* }}} */
#ifdef HAVE_NET_SNMP
/* {{{ proto void snmp_set_enum_print(int enum_print)
Return all values that are enums with their enum value instead of the raw integer */
PHP_FUNCTION(snmp_set_enum_print)
{
long a1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &a1) == FAILURE) {
return;
}
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_PRINT_NUMERIC_ENUM, (int) a1);
}
/* }}} */
/* {{{ proto void snmp_set_oid_output_format(int oid_format)
Set the OID output format. */
PHP_FUNCTION(snmp_set_oid_output_format)
{
long a1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &a1) == FAILURE) {
return;
}
switch ((int) a1) {
case 0:
case NETSNMP_OID_OUTPUT_FULL:
a1 = NETSNMP_OID_OUTPUT_FULL;
break;
default:
case NETSNMP_OID_OUTPUT_NUMERIC:
a1 = NETSNMP_OID_OUTPUT_NUMERIC;
break;
}
netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_OID_OUTPUT_FORMAT, a1);
}
/* }}} */
#endif
/* {{{ proto int snmpset(string host, string community, string object_id, string type, mixed value [, int timeout [, int retries]])
Set the value of a SNMP object */
PHP_FUNCTION(snmpset)
{
php_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,SNMP_CMD_SET, SNMP_VERSION_1);
}
/* }}} */
/* {{{ int netsnmp_session_set_sec_name(struct snmp_session *s, char *name)
Set the security name in the snmpv3 session */
static int netsnmp_session_set_sec_name(struct snmp_session *s, char *name)
{
if ((s) && (name)) {
s->securityName = strdup(name);
s->securityNameLen = strlen(s->securityName);
return (0);
}
return (-1);
}
/* }}} */
/* {{{ int netsnmp_session_set_sec_level(struct snmp_session *s, char *level)
Set the security level in the snmpv3 session */
static int netsnmp_session_set_sec_level(struct snmp_session *s, char *level TSRMLS_DC)
{
if ((s) && (level)) {
if (!strcasecmp(level, "noAuthNoPriv") || !strcasecmp(level, "nanp")) {
s->securityLevel = SNMP_SEC_LEVEL_NOAUTH;
return (0);
} else if (!strcasecmp(level, "authNoPriv") || !strcasecmp(level, "anp")) {
s->securityLevel = SNMP_SEC_LEVEL_AUTHNOPRIV;
return (0);
} else if (!strcasecmp(level, "authPriv") || !strcasecmp(level, "ap")) {
s->securityLevel = SNMP_SEC_LEVEL_AUTHPRIV;
return (0);
}
}
return (-1);
}
/* }}} */
/* {{{ int netsnmp_session_set_auth_protocol(struct snmp_session *s, char *prot)
Set the authentication protocol in the snmpv3 session */
static int netsnmp_session_set_auth_protocol(struct snmp_session *s, char *prot TSRMLS_DC)
{
if ((s) && (prot)) {
if (!strcasecmp(prot, "MD5")) {
s->securityAuthProto = usmHMACMD5AuthProtocol;
s->securityAuthProtoLen = OIDSIZE(usmHMACMD5AuthProtocol);
return (0);
} else if (!strcasecmp(prot, "SHA")) {
s->securityAuthProto = usmHMACSHA1AuthProtocol;
s->securityAuthProtoLen = OIDSIZE(usmHMACSHA1AuthProtocol);