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|
/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997,1998 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) 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. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| 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. |
| |
| You should have received a copy of both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca> |
+----------------------------------------------------------------------+
*/
/* $Id: snmp.c,v 1.2 1998/09/19 14:21:25 rasmus Exp $ */
#include "php.h"
#include "internal_functions.h"
#if defined(COMPILE_DL)
#include "phpdl.h"
#include "functions/dl.h"
#endif
#include "php3_snmp.h"
#include <sys/types.h>
#if MSVC5
#include <winsock.h>
#include <errno.h>
#include <process.h>
#include "win32/time.h"
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/errno.h>
#include <netdb.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SNMP
#include "asn1.h"
#include "snmp_api.h"
#include "snmp_client.h"
#include "snmp_impl.h"
#include "snmp.h"
#include "parse.h"
#include "mib.h"
void _php3_snmp(INTERNAL_FUNCTION_PARAMETERS, int st);
/* constant - can be shared among threads */
static oid objid_mib[] = {1, 3, 6, 1, 2, 1};
/* Add missing prototype */
void sprint_variable(char *, oid *, int, struct variable_list *);
function_entry snmp_functions[] = {
{"snmpget", php3_snmpget, NULL},
{"snmpwalk", php3_snmpwalk, NULL},
{NULL,NULL}
};
php3_module_entry snmp_module_entry = {
"SNMP",snmp_functions,php3i_snmp_init,NULL,NULL,NULL,php3_info_snmp,STANDARD_MODULE_PROPERTIES
};
#if COMPILE_DL
DLEXPORT php3_module_entry *get_module() { return &snmp_module_entry; };
#endif
/* THREAD_LS snmp_module php3_snmp_module; - may need one of these at some point */
int php3i_snmp_init(INIT_FUNC_ARGS) {
init_mib();
return SUCCESS;
}
void php3_info_snmp(void) {
php3_printf("ucd-snmp");
}
/*
* Generic SNMP object fetcher
*
* st=1 GET
* st=2 WALK
*/
void _php3_snmp(INTERNAL_FUNCTION_PARAMETERS, int st) {
pval *a1, *a2, *a3, *a4, *a5;
struct snmp_session session, *ss;
struct snmp_pdu *pdu=NULL, *response;
struct variable_list *vars;
char *objid;
oid name[MAX_NAME_LEN];
int name_length;
int status, count,rootlen=0,gotroot=0;
oid root[MAX_NAME_LEN];
char buf[2048];
int keepwalking=1;
long timeout=SNMP_DEFAULT_TIMEOUT;
long retries=SNMP_DEFAULT_RETRIES;
int myargc = ARG_COUNT(ht);
if (myargc<3 || myargc>5 || getParameters(ht, myargc, &a1, &a2, &a3, &a4, &a5) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(a1);
convert_to_string(a2);
convert_to_string(a3);
if(myargc>3) {
convert_to_long(a4);
timeout=a4->value.lval;
}
if(myargc>4) {
convert_to_long(a5);
retries=a5->value.lval;
}
objid=a3->value.str.val;
if (st==2) { /* walk */
rootlen = MAX_NAME_LEN;
if (strlen(objid)) { /* on a walk, an empty string means top of tree - no error */
if (read_objid(objid, root, &rootlen)) {
gotroot = 1;
} else {
php3_error(E_WARNING,"Invalid object identifier: %s\n", objid);
}
}
if (gotroot == 0) {
memmove((char *)root, (char *)objid_mib, sizeof(objid_mib));
rootlen = sizeof(objid_mib) / sizeof(oid);
gotroot = 1;
}
}
memset(&session, 0, sizeof(struct snmp_session));
session.peername = a1->value.str.val;
session.version = SNMP_VERSION_1;
session.community = (u_char *)a2->value.str.val;
session.community_len = a2->value.str.len;
session.retries = retries;
session.timeout = timeout;
session.authenticator = NULL;
snmp_synch_setup(&session);
ss = snmp_open(&session);
if (ss == NULL){
php3_error(E_WARNING,"Couldn't open snmp\n");
RETURN_FALSE;
}
if (st==2) {
memmove((char *)name, (char *)root, rootlen * sizeof(oid));
name_length = rootlen;
/* prepare result array */
array_init(return_value);
}
while(keepwalking) {
keepwalking=0;
if (st==1) pdu = snmp_pdu_create(SNMP_MSG_GET);
else if (st==2) pdu = snmp_pdu_create(SNMP_MSG_GETNEXT);
if (st==1) {
name_length = MAX_NAME_LEN;
if (!read_objid(objid, name, &name_length)) {
php3_error(E_WARNING,"Invalid object identifier: %s\n", objid);
RETURN_FALSE;
}
}
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==2 && (vars->name_length < rootlen || memcmp(root, vars->name, rootlen * sizeof(oid))))
continue; /* not part of this subtree */
sprint_value(buf,vars->name, vars->name_length, vars);
#if 0
Debug("snmp response is: %s\n",buf);
#endif
if (st==1) {
RETVAL_STRING(buf,1);
} else if (st==2) {
/* Add to returned array */
add_next_index_string(return_value,buf,1);
if (vars->type != SNMP_ENDOFMIBVIEW && vars->type != SNMP_NOSUCHOBJECT && vars->type != SNMP_NOSUCHINSTANCE) {
memmove((char *)name, (char *)vars->name,vars->name_length * sizeof(oid));
name_length = vars->name_length;
keepwalking = 1;
}
}
}
} else {
if (st!=2 || response->errstat != SNMP_ERR_NOSUCHNAME) {
php3_error(E_WARNING,"Error in packet.\nReason: %s\n", 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) sprint_objid(buf,vars->name, vars->name_length);
php3_error(E_WARNING,"This name does not exist: %s\n",buf);
}
if (st==1) {
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_GET)) != NULL) goto retry;
} else if (st==2) {
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_GETNEXT)) != NULL) goto retry;
}
RETURN_FALSE;
}
}
} else if (status == STAT_TIMEOUT) {
php3_error(E_WARNING,"No Response from %s\n", a1->value.str.val);
RETURN_FALSE;
} else { /* status == STAT_ERROR */
php3_error(E_WARNING,"An error occurred, Quitting\n");
RETURN_FALSE;
}
if (response) snmp_free_pdu(response);
} /* keepwalking */
snmp_close(ss);
}
void php3_snmpget(INTERNAL_FUNCTION_PARAMETERS) {
_php3_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,1);
}
void php3_snmpwalk(INTERNAL_FUNCTION_PARAMETERS) {
return _php3_snmp(INTERNAL_FUNCTION_PARAM_PASSTHRU,2);
}
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
|
