static void
SnmpTrapNodeDown(void)
{
send_easy_trap(SNMP_TRAP_ENTERPRISESPECIFIC, 2);
/*
* XXX 2 - Node Down #define it as NODE_DOWN_TRAP
*/
}
int
handle_var_list(struct agent_snmp_session *asp)
{
struct variable_list *varbind_ptr;
u_char statType;
u_char *statP;
size_t statLen;
u_short acl;
WriteMethod *write_method;
AddVarMethod *add_method;
int noSuchObject = TRUE;
int count, view;
count = 0;
varbind_ptr = asp->start;
if ( !varbind_ptr ) {
return SNMP_ERR_NOERROR;
}
while (1) {
count++;
statp_loop:
statP = getStatPtr( varbind_ptr->name,
&varbind_ptr->name_length,
&statType, &statLen, &acl,
asp->exact, &write_method, asp->pdu, &noSuchObject);
if (statP == NULL && (asp->rw != WRITE || write_method == NULL)) {
/* Careful -- if the varbind was lengthy, it will have
allocated some memory. */
snmp_set_var_value(varbind_ptr, NULL, 0);
varbind_ptr->val.integer = NULL;
varbind_ptr->val_len = 0;
if ( asp->exact ) {
if ( noSuchObject == TRUE ){
statType = SNMP_NOSUCHOBJECT;
} else {
statType = SNMP_NOSUCHINSTANCE;
}
} else {
statType = SNMP_ENDOFMIBVIEW;
}
if (asp->pdu->version == SNMP_VERSION_1) {
asp->pdu->errstat = SNMP_ERR_NOSUCHNAME;
asp->pdu->errindex = count;
return SNMP_ERR_NOSUCHNAME;
}
else if (asp->rw == WRITE) {
asp->pdu->errstat =
( noSuchObject ? SNMP_ERR_NOTWRITABLE
: SNMP_ERR_NOCREATION );
asp->pdu->errindex = count;
return asp->pdu->errstat;
}
else
varbind_ptr->type = statType;
}
/* Delegated variables should be added to the
relevant outgoing request */
else if ( IS_DELEGATED(statType)) {
add_method = (AddVarMethod*)statP;
statType = (*add_method)( asp, varbind_ptr );
}
/* GETNEXT/GETBULK should just skip inaccessible entries */
else if ((view = in_a_view(varbind_ptr->name, &varbind_ptr->name_length,
asp->pdu, varbind_ptr->type))
&& !asp->exact) {
if (view != 5) send_easy_trap(SNMP_TRAP_AUTHFAIL, 0);
goto statp_loop;
}
/* Other access problems are permanent */
else if (( asp->rw == WRITE && !(acl & 2)) || view) {
if (asp->pdu->version == SNMP_VERSION_1 || asp->rw != WRITE) {
if (ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_VERBOSE))
DEBUGMSGTL(("snmp_agent", " >> noSuchName (read-only)\n"));
ERROR_MSG("read-only");
statType = SNMP_ERR_NOSUCHNAME;
}
else {
if (ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_VERBOSE))
DEBUGMSGTL(("snmp_agent", " >> notWritable\n"));
ERROR_MSG("Not Writable");
statType = SNMP_ERR_NOTWRITABLE;
}
asp->pdu->errstat = statType;
asp->pdu->errindex = count;
send_easy_trap(SNMP_TRAP_AUTHFAIL, 0);
return statType;
}
else {
/* dump verbose info */
if (ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_VERBOSE) && statP)
dump_var(varbind_ptr->name, varbind_ptr->name_length,
statType, statP, statLen);
/* FINALLY we can act on SET requests ....*/
if ( asp->rw == WRITE ) {
if ( write_method != NULL ) {
statType = (*write_method)(asp->mode,
varbind_ptr->val.string,
varbind_ptr->type,
varbind_ptr->val_len, statP,
varbind_ptr->name,
varbind_ptr->name_length);
if (statType != SNMP_ERR_NOERROR) {
asp->pdu->errstat = statType;
asp->pdu->errindex = count;
return statType;
}
}
else {
if (!goodValue(varbind_ptr->type, varbind_ptr->val_len,
statType, statLen)){
if (asp->pdu->version == SNMP_VERSION_1)
statType = SNMP_ERR_BADVALUE;
else
statType = SNMP_ERR_WRONGTYPE; /* poor approximation */
asp->pdu->errstat = statType;
asp->pdu->errindex = count;
return statType;
}
/* actually do the set if necessary */
if (asp->mode == COMMIT)
setVariable(varbind_ptr->val.string, varbind_ptr->type,
varbind_ptr->val_len, statP, statLen);
}
}
/* ... or save the results from assorted GETs */
else {
snmp_set_var_value(varbind_ptr, statP, statLen);
varbind_ptr->type = statType;
}
}
if ( varbind_ptr == asp->end )
return SNMP_ERR_NOERROR;
varbind_ptr = varbind_ptr->next_variable;
if ( asp->mode == RESERVE1 )
snmp_vars_inc++;
}
}
int
handle_snmp_packet(int operation, struct snmp_session *session, int reqid,
struct snmp_pdu *pdu, void *magic)
{
struct agent_snmp_session *asp;
int status, allDone, i;
struct variable_list *var_ptr, *var_ptr2;
if ( magic == NULL ) {
asp = init_agent_snmp_session( session, snmp_clone_pdu(pdu) );
status = SNMP_ERR_NOERROR;
}
else {
asp = (struct agent_snmp_session *)magic;
status = asp->status;
}
if (asp->outstanding_requests != NULL)
return 1;
if ( check_access(pdu) != 0) {
/* access control setup is incorrect */
send_easy_trap(SNMP_TRAP_AUTHFAIL, 0);
if (asp->pdu->version != SNMP_VERSION_1 && asp->pdu->version != SNMP_VERSION_2c) {
asp->pdu->errstat = SNMP_ERR_AUTHORIZATIONERROR;
asp->pdu->command = SNMP_MSG_RESPONSE;
snmp_increment_statistic(STAT_SNMPOUTPKTS);
snmp_send( asp->session, asp->pdu );
free( asp );
return 1;
} else {
/* drop the request */
free( asp );
return 0;
}
}
switch (pdu->command) {
case SNMP_MSG_GET:
if ( asp->mode != RESERVE1 )
break; /* Single pass */
snmp_increment_statistic(STAT_SNMPINGETREQUESTS);
status = handle_next_pass( asp );
asp->mode = RESERVE2;
break;
case SNMP_MSG_GETNEXT:
if ( asp->mode != RESERVE1 )
break; /* Single pass */
snmp_increment_statistic(STAT_SNMPINGETNEXTS);
asp->exact = FALSE;
status = handle_next_pass( asp );
asp->mode = RESERVE2;
break;
case SNMP_MSG_GETBULK:
/*
* GETBULKS require multiple passes. The first pass handles the
* explicitly requested varbinds, and subsequent passes append
* to the existing var_op_list. Each pass (after the first)
* uses the results of the preceeding pass as the input list
* (delimited by the start & end pointers.
* Processing is terminated if all entries in a pass are
* EndOfMib, or the maximum number of repetitions are made.
*/
if ( asp->mode == RESERVE1 ) {
snmp_increment_statistic(STAT_SNMPINGETREQUESTS);
asp->exact = FALSE;
/*
* Limit max repetitions to something reasonable
* XXX: We should figure out what will fit somehow...
*/
if ( asp->pdu->errindex > 100 )
asp->pdu->errindex = 100;
status = handle_next_pass( asp ); /* First pass */
asp->mode = RESERVE2;
if ( status != SNMP_ERR_NOERROR )
break;
while ( asp->pdu->errstat-- > 0 ) /* Skip non-repeaters */
asp->start = asp->start->next_variable;
asp->pdu->errindex--; /* Handled first repetition */
if ( asp->outstanding_requests != NULL )
return 1;
}
while ( asp->pdu->errindex-- > 0 ) { /* Process repeaters */
/*
* Add new variable structures for the
* repeating elements, ready for the next pass.
* Also check that these are not all EndOfMib
*/
allDone = TRUE; /* Check for some content */
for ( var_ptr = asp->start;
var_ptr != asp->end->next_variable;
var_ptr = var_ptr->next_variable ) {
/* XXX: we don't know the size of the next
OID, so assume the maximum length */
if ( var_ptr->type != SNMP_ENDOFMIBVIEW )
{
var_ptr2 = snmp_add_null_var(asp->pdu, var_ptr->name, MAX_OID_LEN);
for ( i=var_ptr->name_length ; i<MAX_OID_LEN ; i++)
var_ptr2->name[i] = 0;
var_ptr2->name_length = var_ptr->name_length;
allDone = FALSE;
}
}
if ( allDone )
break;
asp->start = asp->end->next_variable;
while ( asp->end->next_variable != NULL )
asp->end = asp->end->next_variable;
status = handle_next_pass( asp );
if ( status != SNMP_ERR_NOERROR )
break;
if ( asp->outstanding_requests != NULL )
return 1;
}
break;
case SNMP_MSG_SET:
/*
* SETS require 3-4 passes through the var_op_list. The first two
* passes verify that all types, lengths, and values are valid
* and may reserve resources and the third does the set and a
* fourth executes any actions. Then the identical GET RESPONSE
* packet is returned.
* If either of the first two passes returns an error, another
* pass is made so that any reserved resources can be freed.
* If the third pass returns an error, another pass is made so that
* any changes can be reversed.
* If the fourth pass (or any of the error handling passes)
* return an error, we'd rather not know about it!
*/
if ( asp->mode == RESERVE1 ) {
snmp_increment_statistic(STAT_SNMPINSETREQUESTS);
asp->rw = WRITE;
status = handle_next_pass( asp );
if ( status != SNMP_ERR_NOERROR )
asp->mode = FREE;
else
asp->mode = RESERVE2;
if ( asp->outstanding_requests != NULL )
return 1;
}
if ( asp->mode == RESERVE2 ) {
status = handle_next_pass( asp );
if ( status != SNMP_ERR_NOERROR )
asp->mode = FREE;
else
asp->mode = ACTION;
if ( asp->outstanding_requests != NULL )
return 1;
}
if ( asp->mode == ACTION ) {
status = handle_next_pass( asp );
if ( status != SNMP_ERR_NOERROR )
asp->mode = UNDO;
else
asp->mode = COMMIT;
if ( asp->outstanding_requests != NULL )
return 1;
}
if ( asp->mode == COMMIT ) {
status = handle_next_pass( asp );
if ( status != SNMP_ERR_NOERROR ) {
status = SNMP_ERR_COMMITFAILED;
asp->mode = FINISHED_FAILURE;
}
else
asp->mode = FINISHED_SUCCESS;
if ( asp->outstanding_requests != NULL )
return 1;
}
if ( asp->mode == UNDO ) {
if (handle_next_pass( asp ) != SNMP_ERR_NOERROR )
status = SNMP_ERR_UNDOFAILED;
asp->mode = FINISHED_FAILURE;
break;
}
if ( asp->mode == FREE ) {
(void) handle_next_pass( asp );
break;
}
break;
case SNMP_MSG_RESPONSE:
snmp_increment_statistic(STAT_SNMPINGETRESPONSES);
free( asp );
return 0;
case SNMP_MSG_TRAP:
case SNMP_MSG_TRAP2:
snmp_increment_statistic(STAT_SNMPINTRAPS);
free( asp );
return 0;
default:
snmp_increment_statistic(STAT_SNMPINASNPARSEERRS);
free( asp );
return 0;
}
if ( asp->outstanding_requests != NULL ) {
asp->status = status;
asp->next = agent_session_list;
agent_session_list = asp;
}
else {
/*
* May need to "dumb down" a SET error status for a
* v1 query. See RFC2576 - section 4.3
*/
if (( asp->pdu->command == SNMP_MSG_SET ) &&
( asp->pdu->version == SNMP_VERSION_1 )) {
switch ( status ) {
case SNMP_ERR_WRONGVALUE:
case SNMP_ERR_WRONGENCODING:
case SNMP_ERR_WRONGTYPE:
case SNMP_ERR_WRONGLENGTH:
case SNMP_ERR_INCONSISTENTVALUE:
status = SNMP_ERR_BADVALUE;
break;
case SNMP_ERR_NOACCESS:
case SNMP_ERR_NOTWRITABLE:
case SNMP_ERR_NOCREATION:
case SNMP_ERR_INCONSISTENTNAME:
case SNMP_ERR_AUTHORIZATIONERROR:
status = SNMP_ERR_NOSUCHNAME;
break;
case SNMP_ERR_RESOURCEUNAVAILABLE:
case SNMP_ERR_COMMITFAILED:
case SNMP_ERR_UNDOFAILED:
status = SNMP_ERR_GENERR;
break;
}
}
/*
* Similarly we may need to "dumb down" v2 exception
* types to throw an error for a v1 query.
* See RFC2576 - section 4.1.2.3
*/
if (( asp->pdu->command != SNMP_MSG_SET ) &&
( asp->pdu->version == SNMP_VERSION_1 )) {
for ( var_ptr = asp->pdu->variables, i=0 ;
var_ptr != NULL ;
var_ptr = var_ptr->next_variable, i++ ) {
switch ( var_ptr->type ) {
case SNMP_NOSUCHOBJECT:
case SNMP_NOSUCHINSTANCE:
case SNMP_ENDOFMIBVIEW:
case ASN_COUNTER64:
status = SNMP_ERR_NOSUCHNAME;
asp->pdu->errindex=i;
break;
}
}
}
if ( status == SNMP_ERR_NOERROR ) {
snmp_increment_statistic_by(
(asp->pdu->command == SNMP_MSG_SET ?
STAT_SNMPINTOTALSETVARS : STAT_SNMPINTOTALREQVARS ),
count_varbinds( asp->pdu ));
}
else {
/*
* Use a copy of the original request
* to report failures.
*/
i = asp->pdu->errindex;
snmp_free_pdu( asp->pdu );
asp->pdu = snmp_clone_pdu( pdu );
asp->pdu->errindex = i;
}
asp->pdu->command = SNMP_MSG_RESPONSE;
asp->pdu->errstat = status;
snmp_send( asp->session, asp->pdu );
snmp_increment_statistic(STAT_SNMPOUTPKTS);
snmp_increment_statistic(STAT_SNMPOUTGETRESPONSES);
free( asp );
}
return 1;
}
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::fhHI:l:L:m:M:n:p:P:qrsS:UvV-:Y:";
int arg, i, ret;
int dont_fork = 0, do_help = 0;
int log_set = 0;
int agent_mode = -1;
char *pid_file = NULL;
char option_compatability[] = "-Le";
#ifndef WIN32
int prepared_sockets = 0;
#endif
#if HAVE_GETPID
int fd;
FILE *PID;
#endif
#ifndef WIN32
#ifndef NETSNMP_NO_SYSTEMD
/* check if systemd has sockets for us and don't close them */
prepared_sockets = netsnmp_sd_listen_fds(0);
#endif /* NETSNMP_NO_SYSTEMD */
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
if (!prepared_sockets) {
for (i = getdtablesize() - 1; i > 2; --i) {
(void) close(i);
}
}
#endif /* #WIN32 */
/*
* register signals ASAP to prevent default action (usually core)
* for signals during startup...
*/
#ifdef SIGTERM
DEBUGMSGTL(("signal", "registering SIGTERM signal handler\n"));
signal(SIGTERM, SnmpdShutDown);
#endif
#ifdef SIGINT
DEBUGMSGTL(("signal", "registering SIGINT signal handler\n"));
signal(SIGINT, SnmpdShutDown);
#endif
#ifdef SIGHUP
signal(SIGHUP, SIG_IGN); /* do not terminate on early SIGHUP */
#endif
#ifdef SIGUSR1
DEBUGMSGTL(("signal", "registering SIGUSR1 signal handler\n"));
signal(SIGUSR1, SnmpdDump);
#endif
#ifdef SIGPIPE
DEBUGMSGTL(("signal", "registering SIGPIPE signal handler\n"));
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
#ifdef SIGXFSZ
signal(SIGXFSZ, SnmpdCatchRandomSignal);
#endif
#ifdef NETSNMP_NO_ROOT_ACCESS
/*
* Default to no.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
#endif
/*
* Default to NOT running an AgentX master.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 0);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_TIMEOUT, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_RETRIES, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_CACHE_TIMEOUT, 5);
/*
* Add some options if they are available.
*/
#if HAVE_UNISTD_H
strcat(options, "g:u:");
#endif
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
strcat(options, "x:");
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
strcat(options, "X");
#endif
/*
* This is incredibly ugly, but it's probably the simplest way
* to handle the old '-L' option as well as the new '-Lx' style
*/
for (i=0; i<argc; i++) {
if (!strcmp(argv[i], "-L"))
argv[i] = option_compatability;
}
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
#ifdef WIN32
snmp_log_syslogname(app_name_long);
#else
snmp_log_syslogname(app_name);
#endif
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, app_name);
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0) {
usage(argv[0]);
}
if (strcasecmp(optarg, "version") == 0) {
version();
}
handle_long_opt(optarg);
break;
case 'a':
log_addresses++;
break;
case 'A':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES, 1);
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage(argv[0]);
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET,
++snmp_dump_packet);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
char *ecp;
int gid;
gid = strtoul(optarg, &ecp, 10);
#if HAVE_GETGRNAM && HAVE_PWD_H
if (*ecp) {
struct group *info;
info = getgrnam(optarg);
gid = info ? info->gr_gid : -1;
endgrent();
}
#endif
if (gid < 0) {
fprintf(stderr, "Bad group id: %s\n", optarg);
exit(1);
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, gid);
} else {
usage(argv[0]);
}
break;
#endif
case 'h':
usage(argv[0]);
break;
case 'H':
do_help = 1;
break;
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage(argv[0]);
}
break;
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
case 'l':
printf("Warning: -l option is deprecated, use -Lf <file> instead\n");
if (optarg != NULL) {
if (strlen(optarg) > PATH_MAX) {
fprintf(stderr,
"%s: logfile path too long (limit %d chars)\n",
argv[0], PATH_MAX);
exit(1);
}
snmp_enable_filelog(optarg,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
log_set = 1;
} else {
usage(argv[0]);
}
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
case 'L':
if (snmp_log_options( optarg, argc, argv ) < 0 ) {
usage(argv[0]);
}
log_set = 1;
break;
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'n':
if (optarg != NULL) {
app_name = optarg;
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, app_name);
} else {
usage(argv[0]);
}
break;
case 'P':
printf("Warning: -P option is deprecated, use -p instead\n");
case 'p':
if (optarg != NULL) {
pid_file = optarg;
} else {
usage(argv[0]);
}
break;
case 'q':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_QUICK_PRINT, 1);
break;
case 'r':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
break;
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
case 's':
printf("Warning: -s option is deprecated, use -Lsd instead\n");
snmp_enable_syslog();
log_set = 1;
break;
case 'S':
printf("Warning: -S option is deprecated, use -Ls <facility> instead\n");
if (optarg != NULL) {
switch (*optarg) {
case 'd':
case 'D':
Facility = LOG_DAEMON;
break;
case 'i':
case 'I':
Facility = LOG_INFO;
break;
case '0':
Facility = LOG_LOCAL0;
break;
case '1':
Facility = LOG_LOCAL1;
break;
case '2':
Facility = LOG_LOCAL2;
break;
case '3':
Facility = LOG_LOCAL3;
break;
case '4':
Facility = LOG_LOCAL4;
break;
case '5':
Facility = LOG_LOCAL5;
break;
case '6':
Facility = LOG_LOCAL6;
break;
case '7':
Facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "invalid syslog facility: -S%c\n",*optarg);
usage(argv[0]);
}
snmp_enable_syslog_ident(snmp_log_syslogname(NULL), Facility);
log_set = 1;
} else {
fprintf(stderr, "no syslog facility specified\n");
usage(argv[0]);
}
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
case 'U':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE);
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
int uid;
uid = strtoul(optarg, &ecp, 10);
#if HAVE_GETPWNAM && HAVE_PWD_H
if (*ecp) {
struct passwd *info;
info = getpwnam(optarg);
uid = info ? info->pw_uid : -1;
endpwent();
}
#endif
if (uid < 0) {
fprintf(stderr, "Bad user id: %s\n", optarg);
exit(1);
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage(argv[0]);
}
break;
#endif
case 'v':
version();
case 'V':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage(argv[0]);
}
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 1);
break;
#endif
case 'X':
#if defined(USING_AGENTX_SUBAGENT_MODULE)
agent_mode = SUB_AGENT;
#else
fprintf(stderr, "%s: Illegal argument -X:"
"AgentX support not compiled in.\n", argv[0]);
usage(argv[0]);
exit(1);
#endif
break;
case 'Y':
netsnmp_config_remember(optarg);
break;
default:
usage(argv[0]);
break;
}
}
if (do_help) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
init_agent(app_name); /* register our .conf handlers */
init_mib_modules();
init_snmp(app_name);
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
}
if (optind < argc) {
#ifndef NETSNMP_NO_LISTEN_SUPPORT
/*
* There are optional transport addresses on the command line.
*/
DEBUGMSGTL(("snmpd/main", "optind %d, argc %d\n", optind, argc));
for (i = optind; i < argc; i++) {
char *c, *astring;
if ((c = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS))) {
astring = (char*)malloc(strlen(c) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
sprintf(astring, "%s,%s", c, argv[i]);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, astring);
SNMP_FREE(astring);
} else {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, argv[i]);
}
}
DEBUGMSGTL(("snmpd/main", "port spec: %s\n",
netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS)));
#else /* NETSNMP_NO_LISTEN_SUPPORT */
fprintf(stderr, "You specified ports to open; this agent was built to only send notifications\n");
exit(1);
#endif /* NETSNMP_NO_LISTEN_SUPPORT */
}
#ifdef NETSNMP_LOGFILE
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
if (0 == log_set)
snmp_enable_filelog(NETSNMP_LOGFILE,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
#endif
#ifdef USING_UTIL_FUNCS_RESTART_MODULE
{
/*
* Initialize a argv set to the current for restarting the agent.
*/
char *cptr, **argvptr;
argvrestartp = (char **)malloc((argc + 2) * sizeof(char *));
argvptr = argvrestartp;
for (i = 0, ret = 1; i < argc; i++) {
ret += strlen(argv[i]) + 1;
}
argvrestart = (char *) malloc(ret);
argvrestartname = (char *) malloc(strlen(argv[0]) + 1);
if (!argvrestartp || !argvrestart || !argvrestartname) {
fprintf(stderr, "malloc failure processing argvrestart\n");
exit(1);
}
strcpy(argvrestartname, argv[0]);
for (cptr = argvrestart, i = 0; i < argc; i++) {
strcpy(cptr, argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
}
#endif /* USING_UTIL_FUNCS_RESTART_MODULE */
if (agent_mode == -1) {
if (strstr(argv[0], "agentxd") != NULL) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, SUB_AGENT);
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, MASTER_AGENT);
}
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, agent_mode);
}
SOCK_STARTUP;
if (init_agent(app_name) != 0) {
snmp_log(LOG_ERR, "Agent initialization failed\n");
exit(1);
}
init_mib_modules();
/*
* start library
*/
init_snmp(app_name);
if ((ret = init_master_agent()) != 0) {
/*
* Some error opening one of the specified agent transports.
*/
snmp_log(LOG_ERR, "Server Exiting with code 1\n");
exit(1);
}
/*
* Initialize the world. Detach from the shell. Create initial user.
*/
if(!dont_fork) {
int quit = ! netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY);
ret = netsnmp_daemonize(quit,
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_STDIO
snmp_stderrlog_status()
#else /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
0
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
);
/*
* xxx-rks: do we care if fork fails? I think we should...
*/
if(ret != 0) {
snmp_log(LOG_ERR, "Server Exiting with code 1\n");
exit(1);
}
}
#if HAVE_GETPID
if (pid_file != NULL) {
/*
* unlink the pid_file, if it exists, prior to open. Without
* doing this the open will fail if the user specified pid_file
* already exists.
*/
unlink(pid_file);
fd = open(pid_file, O_CREAT | O_EXCL | O_WRONLY, 0600);
if (fd == -1) {
snmp_log_perror(pid_file);
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
} else {
if ((PID = fdopen(fd, "w")) == NULL) {
snmp_log_perror(pid_file);
exit(1);
} else {
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
}
#ifndef _MSC_VER
/* The sequence open()/fdopen()/fclose()/close() makes MSVC crash,
hence skip the close() call when using the MSVC runtime. */
close(fd);
#endif
}
}
#endif
#if defined(HAVE_UNISTD_H) && (defined(HAVE_CHOWN) || defined(HAVE_SETGID) || defined(HAVE_SETUID))
{
const char *persistent_dir;
int uid, gid;
persistent_dir = get_persistent_directory();
mkdirhier( persistent_dir, NETSNMP_AGENT_DIRECTORY_MODE, 0 );
uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID);
gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID);
#ifdef HAVE_CHOWN
if ( uid != 0 || gid != 0 )
chown( persistent_dir, uid, gid );
#endif
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) > 0) {
DEBUGMSGTL(("snmpd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) > 0) {
#if HAVE_GETPWNAM && HAVE_PWD_H && HAVE_INITGROUPS
struct passwd *info;
/*
* Set supplementary groups before changing UID
* (which probably involves giving up privileges)
*/
info = getpwuid(uid);
if (info) {
DEBUGMSGTL(("snmpd/main", "Supplementary groups for %s.\n", info->pw_name));
if (initgroups(info->pw_name, (gid != 0 ? (gid_t)gid : info->pw_gid)) == -1) {
snmp_log_perror("initgroups failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
endpwent();
#endif
DEBUGMSGTL(("snmpd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
}
#endif
/*
* Store persistent data immediately in case we crash later.
*/
snmp_store(app_name);
#ifdef SIGHUP
DEBUGMSGTL(("signal", "registering SIGHUP signal handler\n"));
signal(SIGHUP, SnmpdReconfig);
#endif
/*
* Send coldstart trap if possible.
*/
send_easy_trap(0, 0);
/*
* We're up, log our version number.
*/
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
#ifdef WIN32SERVICE
agent_status = AGENT_RUNNING;
#endif
netsnmp_addrcache_initialise();
/*
* Let systemd know we're up.
*/
#ifndef NETSNMP_NO_SYSTEMD
netsnmp_sd_notify(1, "READY=1\n");
if (prepared_sockets)
/*
* Clear the environment variable, we already processed all the sockets
* by now.
*/
netsnmp_sd_listen_fds(1);
#endif
/*
* Forever monitor the dest_port for incoming PDUs.
*/
DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n"));
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY))
receive();
DEBUGMSGTL(("snmpd/main", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd/main", "Bye...\n"));
snmp_shutdown(app_name);
shutdown_master_agent();
shutdown_agent();
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE) &&
(pid_file != NULL)) {
unlink(pid_file);
}
#ifdef WIN32SERVICE
agent_status = AGENT_STOPPED;
#endif
#ifdef USING_UTIL_FUNCS_RESTART_MODULE
SNMP_FREE(argvrestartname);
SNMP_FREE(argvrestart);
SNMP_FREE(argvrestartp);
#endif /* USING_UTIL_FUNCS_RESTART_MODULE */
SOCK_CLEANUP;
return 0;
} /* End main() -- snmpd */
int
write_exampletrap(int action,
u_char * var_val,
u_char var_val_type,
size_t var_val_len,
u_char * statP, oid * name, size_t name_len)
{
long intval;
DEBUGMSGTL(("example", "write_exampletrap entered: action=%d\n",
action));
switch (action) {
case RESERVE1:
/*
* The only acceptable value is the integer 1
*/
if (var_val_type != ASN_INTEGER) {
DEBUGMSGTL(("example", "%x not integer type", var_val_type));
return SNMP_ERR_WRONGTYPE;
}
if (var_val_len > sizeof(long)) {
DEBUGMSGTL(("example", "wrong length %" NETSNMP_PRIz "u",
var_val_len));
return SNMP_ERR_WRONGLENGTH;
}
intval = *((long *) var_val);
if (intval != 1) {
DEBUGMSGTL(("example", "wrong value %lx", intval));
return SNMP_ERR_WRONGVALUE;
}
break;
case RESERVE2:
/*
* No resources are required....
*/
break;
case FREE:
/*
* ... so no resources need be freed
*/
break;
case ACTION:
/*
* Having triggered the sending of a trap,
* it would be impossible to revoke this,
* so we can't actually invoke the action here.
*/
break;
case UNDO:
/*
* We haven't done anything yet,
* so there's nothing to undo
*/
break;
case COMMIT:
/*
* Everything else worked, so it's now safe
* to trigger the trap.
* Note that this is *only* acceptable since
* the trap sending routines are "failsafe".
* (In fact, they can fail, but they return no
* indication of this, which is the next best thing!)
*/
DEBUGMSGTL(("example", "write_exampletrap sending the trap\n"));
send_easy_trap(SNMP_TRAP_ENTERPRISESPECIFIC, 99);
DEBUGMSGTL(("example", "write_exampletrap trap sent\n"));
break;
}
return SNMP_ERR_NOERROR;
}
/*******************************************************************-o-******
* receive
*
* Parameters:
*
* Returns:
* 0 On success.
* -1 System error.
*
* Infinite while-loop which monitors incoming messages for the agent.
* Invoke the established message handlers for incoming messages on a per
* port basis. Handle timeouts.
*/
static int
receive(void)
{
int numfds;
netsnmp_large_fd_set readfds, writefds, exceptfds;
struct timeval timeout, *tvp = &timeout;
int count, block, i;
#ifdef USING_SMUX_MODULE
int sd;
#endif /* USING_SMUX_MODULE */
netsnmp_large_fd_set_init(&readfds, FD_SETSIZE);
netsnmp_large_fd_set_init(&writefds, FD_SETSIZE);
netsnmp_large_fd_set_init(&exceptfds, FD_SETSIZE);
/*
* ignore early sighup during startup
*/
reconfig = 0;
#if defined(WIN32)
create_stdin_waiter_thread();
#endif
/*
* Loop-forever: execute message handlers for sockets with data
*/
while (netsnmp_running) {
if (reconfig) {
#if HAVE_SIGHOLD
sighold(SIGHUP);
#endif
reconfig = 0;
snmp_log(LOG_INFO, "Reconfiguring daemon\n");
/* Stop and restart logging. This allows logfiles to be
rotated etc. */
netsnmp_logging_restart();
snmp_log(LOG_INFO, "NET-SNMP version %s restarted\n",
netsnmp_get_version());
update_config();
send_easy_trap(SNMP_TRAP_ENTERPRISESPECIFIC, 3);
#if HAVE_SIGHOLD
sigrelse(SIGHUP);
#endif
}
/*
* default to sleeping for a really long time. INT_MAX
* should be sufficient (eg we don't care if time_t is
* a long that's bigger than an int).
*/
tvp = &timeout;
tvp->tv_sec = INT_MAX;
tvp->tv_usec = 0;
numfds = 0;
NETSNMP_LARGE_FD_ZERO(&readfds);
NETSNMP_LARGE_FD_ZERO(&writefds);
NETSNMP_LARGE_FD_ZERO(&exceptfds);
block = 0;
snmp_select_info2(&numfds, &readfds, tvp, &block);
if (block == 1) {
tvp = NULL; /* block without timeout */
}
#ifdef USING_SMUX_MODULE
if (smux_listen_sd >= 0) {
NETSNMP_LARGE_FD_SET(smux_listen_sd, &readfds);
numfds =
smux_listen_sd >= numfds ? smux_listen_sd + 1 : numfds;
for (i = 0; i < smux_snmp_select_list_get_length(); i++) {
sd = smux_snmp_select_list_get_SD_from_List(i);
if (sd != 0)
{
NETSNMP_LARGE_FD_SET(sd, &readfds);
numfds = sd >= numfds ? sd + 1 : numfds;
}
}
}
#endif /* USING_SMUX_MODULE */
#ifndef NETSNMP_FEATURE_REMOVE_FD_EVENT_MANAGER
netsnmp_external_event_info2(&numfds, &readfds, &writefds, &exceptfds);
#endif /* NETSNMP_FEATURE_REMOVE_FD_EVENT_MANAGER */
reselect:
for (i = 0; i < NUM_EXTERNAL_SIGS; i++) {
if (external_signal_scheduled[i]) {
external_signal_scheduled[i]--;
external_signal_handler[i](i);
}
}
DEBUGMSGTL(("snmpd/select", "select( numfds=%d, ..., tvp=%p)\n",
numfds, tvp));
if (tvp)
DEBUGMSGTL(("timer", "tvp %ld.%ld\n", (long) tvp->tv_sec,
(long) tvp->tv_usec));
count = netsnmp_large_fd_set_select(numfds, &readfds, &writefds, &exceptfds,
tvp);
DEBUGMSGTL(("snmpd/select", "returned, count = %d\n", count));
if (count > 0) {
#ifdef USING_SMUX_MODULE
/*
* handle the SMUX sd's
*/
if (smux_listen_sd >= 0) {
for (i = 0; i < smux_snmp_select_list_get_length(); i++) {
sd = smux_snmp_select_list_get_SD_from_List(i);
if (NETSNMP_LARGE_FD_ISSET(sd, &readfds)) {
if (smux_process(sd) < 0) {
smux_snmp_select_list_del(sd);
}
}
}
/*
* new connection
*/
if (NETSNMP_LARGE_FD_ISSET(smux_listen_sd, &readfds)) {
if ((sd = smux_accept(smux_listen_sd)) >= 0) {
smux_snmp_select_list_add(sd);
}
}
}
#endif /* USING_SMUX_MODULE */
#ifndef NETSNMP_FEATURE_REMOVE_FD_EVENT_MANAGER
netsnmp_dispatch_external_events2(&count, &readfds,
&writefds, &exceptfds);
#endif /* NETSNMP_FEATURE_REMOVE_FD_EVENT_MANAGER */
/* If there are still events leftover, process them */
if (count > 0) {
snmp_read2(&readfds);
}
} else
switch (count) {
case 0:
snmp_timeout();
break;
case -1:
DEBUGMSGTL(("snmpd/select", " errno = %d\n", errno));
if (errno == EINTR) {
/*
* likely that we got a signal. Check our special signal
* flags before retrying select.
*/
if (netsnmp_running && !reconfig) {
goto reselect;
}
continue;
} else {
snmp_log_perror("select");
}
return -1;
default:
snmp_log(LOG_ERR, "select returned %d\n", count);
return -1;
} /* endif -- count>0 */
/*
* see if persistent store needs to be saved
*/
snmp_store_if_needed();
/*
* run requested alarms
*/
run_alarms();
netsnmp_check_outstanding_agent_requests();
} /* endwhile */
netsnmp_large_fd_set_cleanup(&readfds);
netsnmp_large_fd_set_cleanup(&writefds);
netsnmp_large_fd_set_cleanup(&exceptfds);
#if defined(WIN32)
join_stdin_waiter_thread();
#endif
snmp_log(LOG_INFO, "Received TERM or STOP signal... shutting down...\n");
return 0;
} /* end receive() */
static void
SnmpTrapNodeDown(void)
{
send_easy_trap (6, 2); /* 2 - Node Down #define it as NODE_DOWN_TRAP */
}
int
main(int argc, char *argv[])
{
int arg,i;
int ret;
u_short dest_port = 161;
int dont_fork = 0, dont_zero_log = 0;
char logfile[300];
char *cptr, **argvptr;
logfile[0] = 0;
optconfigfile = NULL;
dontReadConfigFiles = 0;
#ifdef LOGFILE
strcpy(logfile,LOGFILE);
#endif
/*
* usage: snmpd
*/
for(arg = 1; arg < argc; arg++){
if (argv[arg][0] == '-'){
switch(argv[arg][1]){
case 'c':
if (++arg == argc) usage(argv[0]);
optconfigfile = strdup(argv[arg]);
break;
case 'C':
dontReadConfigFiles = 1;
break;
case 'd':
snmp_dump_packet++;
verbose = 1;
break;
case 'q':
snmp_set_quick_print(1);
break;
case 'D':
debug_register_tokens(&argv[arg][2]);
snmp_set_do_debugging(1);
break;
case 'p':
if (++arg == argc) usage(argv[0]);
dest_port = atoi(argv[arg]);
if (dest_port <= 0) usage(argv[0]);
break;
case 'a':
log_addresses++;
break;
case 'V':
verbose = 1;
break;
case 'f':
dont_fork = 1;
break;
case 'l':
if (++arg == argc) usage(argv[0]);
strcpy(logfile,argv[arg]);
break;
case 'L':
logfile[0] = 0;
break;
case 'A':
dont_zero_log = 1;
break;
case 'h':
usage(argv[0]);
break;
case 'H':
init_agent(); /* register our .conf handlers */
#ifdef HAVE_MIB
register_mib_handlers(); /* snmplib .conf handlers */
#endif
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
break;
case 'v':
printf("\nUCD-snmp version: %s\n",VersionInfo);
printf("Author: Wes Hardaker\n");
printf("Email: [email protected]\n\n");
exit (0);
case '-':
switch(argv[arg][2]){
case 'v':
printf("\nUCD-snmp version: %s\n",VersionInfo);
printf("Author: Wes Hardaker\n");
printf("Email: [email protected]\n\n");
exit (0);
case 'h':
usage(argv[0]);
exit(0);
}
default:
printf("invalid option: %s\n", argv[arg]);
usage(argv[0]);
break;
}
continue;
}
}
/* initialize a argv set to the current for restarting the agent */
argvrestartp = (char **) malloc((argc+2) * sizeof (char *));
argvptr = argvrestartp;
for(i=0, ret = 1; i < argc; i++) {
ret += strlen(argv[i])+1;
}
argvrestart = (char *) malloc((ret));
argvrestartname = (char *) malloc(strlen(argv[0])+1);
strcpy(argvrestartname,argv[0]);
for(cptr = argvrestart,i = 0; i < argc; i++) {
strcpy(cptr,argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
*cptr = 0;
*argvptr = NULL;
/* open the logfile if necessary */
if (logfile[0]) {
close(1);
open(logfile,O_WRONLY|O_CREAT| ((dont_zero_log) ? O_APPEND : O_TRUNC),
0644);
close(2);
dup(1);
close(0);
}
#ifdef USE_LIBWRAP
openlog("snmpd", LOG_CONS, LOG_AUTH|LOG_INFO);
#endif
setvbuf (stdout, NULL, _IOLBF, BUFSIZ);
printf ("%s UCD-SNMP version %s\n", sprintf_stamp (NULL), VersionInfo);
if (!dont_fork && fork() != 0) /* detach from shell */
exit(0);
init_agent(); /* register our .conf handlers */
#ifdef HAVE_MIB
register_mib_handlers(); /* snmplib .conf handlers */
read_premib_configs(); /* read pre-mib-reading .conf handlers */
init_mib(); /* initialize the mib structures */
#endif
update_config(0); /* read in config files and register HUP */
#ifdef PERSISTENTFILE
/* read in the persistent information cache */
read_config_with_type(PERSISTENTFILE, "snmpd");
unlink(PERSISTENTFILE); /* nuke it now that we've read it */
#endif
#ifdef HAVE_SNMP2P
init_snmp2p( dest_port );
#endif
printf("Opening port(s): ");
fflush(stdout);
if (( ret = open_port( dest_port )) > 0 )
sd_handlers[ret-1] = snmp_read_packet; /* Save pointer to function */
#ifdef HAVE_SNMP2P
open_ports_snmp2p( );
#endif
printf("\n");
fflush(stdout);
/* get current time (ie, the time the agent started) */
gettimeofday(&starttime, NULL);
starttime.tv_sec--;
starttime.tv_usec += 1000000L;
/* send coldstart trap via snmptrap(1) if possible */
send_easy_trap (0, 0);
signal(SIGTERM, SnmpdShutDown);
signal(SIGINT, SnmpdShutDown);
memset(addrCache, 0, sizeof(addrCache));
receive(sdlist);
#include "mib_module_shutdown.h"
DEBUGMSGTL(("snmpd", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd", "Bye...\n"));
return 0;
}
int
main(int argc, char **argv)
{
/*
* Defs for arg-handling code: handles setting of policy-related variables
*/
int ch;
int dont_fork = 0, use_syslog = 0, kdump_only = 0;
int ilo_gen = 0;
char *transport = "hpilo:";
int i;
int do_ahs = 1;
int do_ide = 1;
int do_host = 1;
int do_nic = 1;
int do_scsi = 1;
int do_pmp = 0;
int do_se = 1;
int do_fca = 1;
int do_mibII = 1;
int scale = 1;
char *argarg;
int prepared_sockets = 0;
struct stat st;
struct timeval the_time[2];
init_etime(&the_time[0]);
if (stat("/sys/module/hpilo", &st) != 0 ) {
printf("hp-ams requires that the hpilo kernel module is loaded");
exit(1);
}
#ifndef NETSNMP_NO_SYSTEMD
/* check if systemd has sockets for us and don't close them */
prepared_sockets = netsnmp_sd_listen_fds(0);
#endif /* NETSNMP_NO_SYSTEMD */
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
if (!prepared_sockets) {
for (i = getdtablesize() - 1; i > 2; --i) {
(void) close(i);
}
}
snmp_disable_log();
while ((ch = getopt(argc, argv, "D:fG:kLM::OI:P:t:T::x:V:")) != EOF)
switch (ch) {
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
case 'k':
kdump_only = 1;
break;
case 'h':
usage();
exit(0);
break;
case 'G':
GenericData = optarg;
break;
case 'I':
log_interval = atoi(optarg);
if ((log_interval <0) || (log_interval > 3)) {
usage();
exit(0);
}
break;
case 'P':
interval2ping = atoi(optarg);
if (interval2ping <0) {
usage();
exit(0);
}
break;
case 'L':
use_syslog = 0; /* use stderr */
break;
case 'M':
argarg = optarg;
do_ahs = 0;
do_ide = 0;
do_nic = 0;
do_scsi = 0;
do_host = 0;
do_pmp = 0;
do_se = 0;
do_fca = 0;
do_mibII = 1;
while (argarg != 0) {
char * mibnum;
int mibitem;
do_mibII = 0;
mibnum = argarg;
argarg = index(mibnum, ',');
if (argarg != 0) {
*argarg = 0;
argarg++;
}
mibitem = atoi(mibnum);
switch (mibitem) {
case 0:
do_ahs = 1;
break;
case 1:
do_se = 1;
break;
case 5:
do_scsi = 1;
break;
case 11:
do_host = 1;
break;
case 14:
do_ide = 1;
break;
case 16:
do_fca = 1;
break;
case 18:
do_nic = 1;
break;
case 23:
do_pmp = 1;
break;
case 99:
do_mibII = 1;
break;
default:
break;
}
}
break;
case 'O':
gen8_only = 0; /* allow to run on non supported */
break;
case 't':
if (optarg != (char *) 0)
trap_fire = atoi(optarg);
else
trap_fire = 1;
break;
case 'T':
if (optarg != (char *) 0) {
switch (optarg[strlen(optarg)-1]) {
case 'd':
case 'D':
optarg[strlen(optarg)-1] = (char )0;
scale = 60*60*24;
break;
case 'h':
case 'H':
optarg[strlen(optarg)-1] = (char )0;
scale = 60*60;
break;
case 'm':
case 'M':
optarg[strlen(optarg)-1] = (char )0;
scale = 60;
break;
case 'S':
case 's':
optarg[strlen(optarg)-1] = (char )0;
default:
break;
}
testtrap_interval = atoi(optarg) * scale;
if ((testtrap_interval < 10) || (testtrap_interval > (7*24*60*60))) {
usage();
exit(0);
}
}
break;
case 'x':
if (optarg != NULL) {
transport = optarg;
} else {
usage();
}
break;
case 'V':
if (optarg != NULL) {
vendor_tag = optarg;
} else {
usage();
}
break;
default:
fprintf(stderr, "unknown option %c\n", ch);
usage();
exit(1);
}
/* if the -k option was provided, then also set the dont_fork flag. */
if (kdump_only) {
dont_fork = 1;
}
if (dont_fork) {
snmp_enable_stderrlog();
}
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, transport);
/*
* make us a agentx client.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, 1);
if (InitSMBIOS() == 0 ) {
if (gen8_only == 0) {
fprintf(stderr,"SM BIOS initialization failed,"
" some functionality may not exist\n");
} else {
fprintf(stderr,"SM BIOS initialization failed,"
" unable to determine system type\n");
exit(1);
}
} else {
ilo_gen = GetiLOGen();
if ((gen8_only) && (ilo_gen < 4)) {
fprintf(stderr,"This program requires the host to have a HP Integrated Lights Out 4 (iLO 4)"
" BMC\n");
exit(1);
}
}
/*
* daemonize
*/
snmp_disable_log();
if (!dont_fork) {
snmp_enable_calllog();
int rc = netsnmp_daemonize(1, use_syslog);
if (rc)
exit(-1);
} else
snmp_enable_stderrlog();
/* Clear out Status array */
memset(cpqHostMibStatusArray,0,sizeof(cpqHostMibStatusArray));
memset(cpqHoMibHealthStatusArray, 0, sizeof(cpqHoMibHealthStatusArray));
DEBUGMSG(("amsHelper:timer", "interval for StartUp %dms\n", get_etime(&the_time[0])));
if (do_ahs) {
LOG_PROCESS_CRASHES();
DEBUGMSG(("amsHelper:timer", "interval for Log Crashes %dms\n", get_etime(&the_time[0])));
if (kdump_only) {
return 0;
}
LOG_OS_BOOT();
DEBUGMSG(("amsHelper:timer", "interval for Log Boot %dms\n", get_etime(&the_time[0])));
}
openlog("hp-ams", LOG_CONS | LOG_PID, LOG_DAEMON);
/*
* initialize the agent library
*/
init_agent("amsHelper");
netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_HPILODOMAIN_IML, 4);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_TIMEOUT, 120 * ONE_SEC);
/* set ping inetrval to interval2pimn - default is 0 */
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL, interval2ping);
/* sometime iLO4 can be slow so double the default to 2 sec if necessary*/
netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_TIMEOUT, 3);
/* if the ilo starts dropping packets retry a couple of times */
netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_RETRIES, 5);
init_snmp("amsHelper");
DEBUGMSG(("amsHelper:timer", "interval for SNMP startup %dms\n", get_etime(&the_time[0])));
if (do_mibII) {
init_mib_modules();
DEBUGMSG(("amsHelper:timer", "interval for init MIB-2 %dms\n", get_etime(&the_time[0])));
}
if (do_host) {
init_cpqHost();
DEBUGMSG(("amsHelper:timer", "interval for cpqHost %dms\n", get_etime(&the_time[0])));
}
if (do_ahs) {
LOG_OS_INFORMATION();
DEBUGMSG(("amsHelper:timer", "interval for LOG OS %dms\n", get_etime(&the_time[0])));
LOG_DRIVERS();
DEBUGMSG(("amsHelper:timer", "interval for Log drivers %dms\n", get_etime(&the_time[0])));
LOG_SERVICE();
DEBUGMSG(("amsHelper:timer", "interval for Log services %dms\n", get_etime(&the_time[0])));
LOG_PACKAGE();
DEBUGMSG(("amsHelper:timer", "interval for Log packages %dms\n", get_etime(&the_time[0])));
}
if (do_se) {
init_cpqStdPciTable();
DEBUGMSG(("amsHelper:timer", "interval for cpqSe %dms\n", get_etime(&the_time[0])));
}
if (do_scsi) {
init_cpqScsi();
DEBUGMSG(("amsHelper:timer", "interval for cpqScsi %dms\n", get_etime(&the_time[0])));
}
if (do_ide) {
init_cpqIde();
DEBUGMSG(("amsHelper:timer", "interval for cpqIde %dms\n", get_etime(&the_time[0])));
}
if (do_fca) {
init_cpqFibreArray();
DEBUGMSG(("amsHelper:timer", "interval for cpqFca %dms\n", get_etime(&the_time[0])));
}
if (do_nic) {
init_cpqNic();
DEBUGMSG(("amsHelper:timer", "interval for cpqNic %dms\n", get_etime(&the_time[0])));
}
if (do_pmp) {
init_cpqLinOsMgmt();
DEBUGMSG(("amsHelper:timer", "interval for cpqLinOsMgmt %dms\n", get_etime(&the_time[0])));
}
/*
* Send coldstart trap if possible.
*/
send_easy_trap(0, 0);
syslog(LOG_NOTICE, "amsHelper Started . . ");
/*
* Let systemd know we're up.
*/
#ifndef NETSNMP_NO_SYSTEMD
netsnmp_sd_notify(1, "READY=1\n");
if (prepared_sockets)
/*
* Clear the environment variable, we already processed all the sockets
* by now.
*/
netsnmp_sd_listen_fds(1);
#endif
if (do_ahs) {
LOG_OS_USAGE();
DEBUGMSG(("amsHelper:timer", "interval for LOG OS Usage%dms\n", get_etime(&the_time[0])));
LOG_PROCESSOR_USAGE();
DEBUGMSG(("amsHelper:timer", "interval for LOG Processor Usage %dms\n", get_etime(&the_time[0])));
LOG_MEMORY_USAGE();
DEBUGMSG(("amsHelper:timer", "interval for LOG Memory Usage %dms\n", get_etime(&the_time[0])));
}
/*
* In case we recevie a request to stop (kill -TERM or kill -INT)
*/
ams_running = 1;
signal(SIGTERM, stop_server);
signal(SIGINT, stop_server);
DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n"));
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY))
receive();
snmp_shutdown("amsHelper");
LOG_OS_SHUTDOWN();
syslog(LOG_NOTICE, "amsHelper Stopped . . ");
exit(0);
}
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::fhHI:l:L:m:M:p:P:qrsS:UvV-:";
int arg, i, ret;
int dont_fork = 0;
int dont_zero_log = 0;
int syslog_log = 0;
int uid = 0, gid = 0;
int agent_mode = -1;
char logfile[PATH_MAX + 1] = { 0 };
char *cptr, **argvptr;
char *pid_file = NULL;
char option_compatability[] = "-Le";
#if HAVE_GETPID
int fd;
FILE *PID;
#endif
#ifndef WIN32
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
for (i = getdtablesize() - 1; i > 2; --i) {
(void) close(i);
}
#endif /* #WIN32 */
/*
* register signals ASAP to prevent default action (usually core)
* for signals during startup...
*/
#ifdef SIGTERM
DEBUGMSGTL(("signal", "registering SIGTERM signal handler\n"));
signal(SIGTERM, SnmpdShutDown);
#endif
#ifdef SIGINT
DEBUGMSGTL(("signal", "registering SIGINT signal handler\n"));
signal(SIGINT, SnmpdShutDown);
#endif
#ifdef SIGHUP
DEBUGMSGTL(("signal", "registering SIGHUP signal handler\n"));
signal(SIGHUP, SnmpdReconfig);
#endif
#ifdef SIGUSR1
DEBUGMSGTL(("signal", "registering SIGUSR1 signal handler\n"));
signal(SIGUSR1, SnmpdDump);
#endif
#ifdef SIGPIPE
DEBUGMSGTL(("signal", "registering SIGPIPE signal handler\n"));
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
#ifdef SIGXFSZ
signal(SIGXFSZ, SnmpdCatchRandomSignal);
#endif
#ifdef LOGFILE
strncpy(logfile, LOGFILE, PATH_MAX);
#endif
#ifdef NO_ROOT_ACCESS
/*
* Default to no.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
#endif
/*
* Default to NOT running an AgentX master.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 0);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_TIMEOUT, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_RETRIES, -1);
/*
* Add some options if they are available.
*/
#if HAVE_UNISTD_H
strcat(options, "g:u:");
#endif
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
strcat(options, "x:");
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
strcat(options, "X");
#endif
/*
* This is incredibly ugly, but it's probably the simplest way
* to handle the old '-L' option as well as the new '-Lx' style
*/
for (i=0; i<argc; i++) {
if (!strcmp(argv[i], "-L"))
argv[i] = option_compatability;
}
snmp_log_syslogname(app_name);
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0) {
usage(argv[0]);
}
if (strcasecmp(optarg, "version") == 0) {
version();
}
handle_long_opt(optarg);
break;
case 'a':
log_addresses++;
break;
case 'A':
dont_zero_log = 1;
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage(argv[0]);
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
snmp_set_dump_packet(++snmp_dump_packet);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, atoi(optarg));
} else {
usage(argv[0]);
}
break;
#endif
case 'h':
usage(argv[0]);
break;
case 'H':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
init_agent("snmpd"); /* register our .conf handlers */
init_mib_modules();
init_snmp("snmpd");
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage(argv[0]);
}
break;
case 'l':
printf("Warning: -l option is deprecated, use -Lf <file> instead\n");
if (optarg != NULL) {
if (strlen(optarg) > PATH_MAX) {
fprintf(stderr,
"%s: logfile path too long (limit %d chars)\n",
argv[0], PATH_MAX);
exit(1);
}
strncpy(logfile, optarg, PATH_MAX);
} else {
usage(argv[0]);
}
break;
case 'L':
if (snmp_log_options( optarg, argc, argv ) < 0 ) {
usage(argv[0]);
}
break;
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'P':
printf("Warning: -P option is deprecated, use -p instead\n");
case 'p':
if (optarg != NULL) {
pid_file = optarg;
} else {
usage(argv[0]);
}
break;
case 'q':
snmp_set_quick_print(1);
break;
case 'r':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
break;
case 's':
printf("Warning: -s option is deprecated, use -Lsd instead\n");
syslog_log = 1;
break;
case 'S':
printf("Warning: -S option is deprecated, use -Ls <facility> instead\n");
if (optarg != NULL) {
switch (*optarg) {
case 'd':
case 'D':
Facility = LOG_DAEMON;
break;
case 'i':
case 'I':
Facility = LOG_INFO;
break;
case '0':
Facility = LOG_LOCAL0;
break;
case '1':
Facility = LOG_LOCAL1;
break;
case '2':
Facility = LOG_LOCAL2;
break;
case '3':
Facility = LOG_LOCAL3;
break;
case '4':
Facility = LOG_LOCAL4;
break;
case '5':
Facility = LOG_LOCAL5;
break;
case '6':
Facility = LOG_LOCAL6;
break;
case '7':
Facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "invalid syslog facility: -S%c\n",*optarg);
usage(argv[0]);
}
} else {
fprintf(stderr, "no syslog facility specified\n");
usage(argv[0]);
}
break;
case 'U':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE);
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
int uid;
uid = strtoul(optarg, &ecp, 10);
if (*ecp) {
#if HAVE_GETPWNAM && HAVE_PWD_H
struct passwd *info;
info = getpwnam(optarg);
if (info) {
uid = info->pw_uid;
} else {
#endif
fprintf(stderr, "Bad user id: %s\n", optarg);
exit(1);
#if HAVE_GETPWNAM && HAVE_PWD_H
}
#endif
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage(argv[0]);
}
break;
#endif
case 'v':
version();
case 'V':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage(argv[0]);
}
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 1);
break;
#endif
case 'X':
#if defined(USING_AGENTX_SUBAGENT_MODULE)
agent_mode = SUB_AGENT;
#else
fprintf(stderr, "%s: Illegal argument -X:"
"AgentX support not compiled in.\n", argv[0]);
usage(argv[0]);
exit(1);
#endif
break;
default:
usage(argv[0]);
break;
}
}
if (optind < argc) {
/*
* There are optional transport addresses on the command line.
*/
DEBUGMSGTL(("snmpd/main", "optind %d, argc %d\n", optind, argc));
for (i = optind; i < argc; i++) {
char *c, *astring;
if ((c = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS))) {
astring = (char*)malloc(strlen(c) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
sprintf(astring, "%s,%s", c, argv[i]);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, astring);
SNMP_FREE(astring);
} else {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, argv[i]);
}
}
DEBUGMSGTL(("snmpd/main", "port spec: %s\n",
netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS)));
}
setup_log(0, dont_zero_log, 0, syslog_log, logfile);
/*
* Initialize a argv set to the current for restarting the agent.
*/
argvrestartp = (char **)malloc((argc + 2) * sizeof(char *));
argvptr = argvrestartp;
for (i = 0, ret = 1; i < argc; i++) {
ret += strlen(argv[i]) + 1;
}
argvrestart = (char *) malloc(ret);
argvrestartname = (char *) malloc(strlen(argv[0]) + 1);
if (!argvrestartp || !argvrestart || !argvrestartname) {
fprintf(stderr, "malloc failure processing argvrestart\n");
exit(1);
}
strcpy(argvrestartname, argv[0]);
if (agent_mode == -1) {
if (strstr(argvrestartname, "agentxd") != NULL) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, SUB_AGENT);
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, MASTER_AGENT);
}
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, agent_mode);
}
for (cptr = argvrestart, i = 0; i < argc; i++) {
strcpy(cptr, argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
*cptr = 0;
*argvptr = NULL;
#ifdef BUFSIZ
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
#endif
/*
* Initialize the world. Detach from the shell. Create initial user.
*/
if(!dont_fork) {
int quit = ! netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY);
ret = netsnmp_daemonize(quit, snmp_stderrlog_status());
/*
* xxx-rks: do we care if fork fails? I think we should...
*/
if(ret != 0)
Exit(1); /* Exit logs exit val for us */
}
SOCK_STARTUP;
init_agent("snmpd"); /* do what we need to do first. */
init_mib_modules();
/*
* start library
*/
init_snmp("snmpd");
if ((ret = init_master_agent()) != 0) {
/*
* Some error opening one of the specified agent transports.
*/
Exit(1); /* Exit logs exit val for us */
}
/*
* Store persistent data immediately in case we crash later.
*/
snmp_store("snmpd");
/*
* Send coldstart trap if possible.
*/
send_easy_trap(0, 0);
#if HAVE_GETPID
if (pid_file != NULL) {
/*
* unlink the pid_file, if it exists, prior to open. Without
* doing this the open will fail if the user specified pid_file
* already exists.
*/
unlink(pid_file);
fd = open(pid_file, O_CREAT | O_EXCL | O_WRONLY, 0600);
if (fd == -1) {
snmp_log_perror(pid_file);
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
} else {
if ((PID = fdopen(fd, "w")) == NULL) {
snmp_log_perror(pid_file);
exit(1);
} else {
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
}
close(fd);
}
}
#endif
#if HAVE_UNISTD_H
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) != 0) {
DEBUGMSGTL(("snmpd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) != 0) {
DEBUGMSGTL(("snmpd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#endif
/*
* We're up, log our version number.
*/
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
#ifdef WIN32SERVICE
agent_status = AGENT_RUNNING;
#endif
netsnmp_addrcache_initialise();
/*
* Forever monitor the dest_port for incoming PDUs.
*/
DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n"));
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY))
receive();
#include "mib_module_shutdown.h"
DEBUGMSGTL(("snmpd/main", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd/main", "Bye...\n"));
snmp_shutdown("snmpd");
#ifdef SHUTDOWN_AGENT_CLEANLY /* broken code */
/* these attempt to free all known memory, but result in double frees */
shutdown_master_agent();
shutdown_agent();
#endif
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE) &&
(pid_file != NULL)) {
unlink(pid_file);
}
#ifdef WIN32SERVICE
agent_status = AGENT_STOPPED;
#endif
SNMP_FREE(argvrestartname);
SNMP_FREE(argvrestart);
SNMP_FREE(argvrestartp);
SOCK_CLEANUP;
return 0;
} /* End main() -- snmpd */
/*******************************************************************-o-******
* receive
*
* Parameters:
*
* Returns:
* 0 On success.
* -1 System error.
*
* Infinite while-loop which monitors incoming messges for the agent.
* Invoke the established message handlers for incoming messages on a per
* port basis. Handle timeouts.
*/
static int
receive(void)
{
int numfds;
fd_set readfds, writefds, exceptfds;
struct timeval timeout, *tvp = &timeout;
struct timeval sched, *svp = &sched, now, *nvp = &now;
int count, block, i;
#ifdef USING_SMUX_MODULE
int sd;
#endif /* USING_SMUX_MODULE */
/*
* Set the 'sched'uled timeout to the current time + one TIMETICK.
*/
gettimeofday(nvp, (struct timezone *) NULL);
svp->tv_usec = nvp->tv_usec + TIMETICK;
svp->tv_sec = nvp->tv_sec;
while (svp->tv_usec >= ONE_SEC) {
svp->tv_usec -= ONE_SEC;
svp->tv_sec++;
}
/*
* ignore early sighup during startup
*/
reconfig = 0;
/*
* Loop-forever: execute message handlers for sockets with data,
* reset the 'sched'uler.
*/
while (netsnmp_running) {
if (reconfig) {
reconfig = 0;
snmp_log(LOG_INFO, "Reconfiguring daemon\n");
/* Stop and restart logging. This allows logfiles to be
rotated etc. */
snmp_disable_log();
setup_log(1, 0, 0, 0, NULL);
snmp_log(LOG_INFO, "NET-SNMP version %s restarted\n",
netsnmp_get_version());
update_config();
send_easy_trap(SNMP_TRAP_ENTERPRISESPECIFIC, 3);
}
for (i = 0; i < NUM_EXTERNAL_SIGS; i++) {
if (external_signal_scheduled[i]) {
external_signal_scheduled[i]--;
external_signal_handler[i](i);
}
}
tvp = &timeout;
tvp->tv_sec = 0;
tvp->tv_usec = TIMETICK;
numfds = 0;
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&exceptfds);
block = 0;
snmp_select_info(&numfds, &readfds, tvp, &block);
if (block == 1) {
tvp = NULL; /* block without timeout */
}
#ifdef USING_SMUX_MODULE
if (smux_listen_sd >= 0) {
FD_SET(smux_listen_sd, &readfds);
numfds =
smux_listen_sd >= numfds ? smux_listen_sd + 1 : numfds;
for (i = 0; i < sdlen; i++) {
FD_SET(sdlist[i], &readfds);
numfds = sdlist[i] >= numfds ? sdlist[i] + 1 : numfds;
}
}
#endif /* USING_SMUX_MODULE */
for (i = 0; i < external_readfdlen; i++) {
FD_SET(external_readfd[i], &readfds);
if (external_readfd[i] >= numfds)
numfds = external_readfd[i] + 1;
}
for (i = 0; i < external_writefdlen; i++) {
FD_SET(external_writefd[i], &writefds);
if (external_writefd[i] >= numfds)
numfds = external_writefd[i] + 1;
}
for (i = 0; i < external_exceptfdlen; i++) {
FD_SET(external_exceptfd[i], &exceptfds);
if (external_exceptfd[i] >= numfds)
numfds = external_exceptfd[i] + 1;
}
reselect:
DEBUGMSGTL(("snmpd/select", "select( numfds=%d, ..., tvp=%p)\n",
numfds, tvp));
count = select(numfds, &readfds, &writefds, &exceptfds, tvp);
DEBUGMSGTL(("snmpd/select", "returned, count = %d\n", count));
if (count > 0) {
#ifdef USING_SMUX_MODULE
/*
* handle the SMUX sd's
*/
if (smux_listen_sd >= 0) {
for (i = 0; i < sdlen; i++) {
if (FD_ISSET(sdlist[i], &readfds)) {
if (smux_process(sdlist[i]) < 0) {
for (; i < (sdlen - 1); i++) {
sdlist[i] = sdlist[i + 1];
}
sdlen--;
}
}
}
/*
* new connection
*/
if (FD_ISSET(smux_listen_sd, &readfds)) {
if ((sd = smux_accept(smux_listen_sd)) >= 0) {
sdlist[sdlen++] = sd;
}
}
}
#endif /* USING_SMUX_MODULE */
snmp_read(&readfds);
for (i = 0; count && (i < external_readfdlen); i++) {
if (FD_ISSET(external_readfd[i], &readfds)) {
DEBUGMSGTL(("snmpd/select", "readfd[%d] = %d\n",
i, external_readfd[i]));
external_readfdfunc[i] (external_readfd[i],
external_readfd_data[i]);
FD_CLR(external_readfd[i], &readfds);
count--;
}
}
for (i = 0; count && (i < external_writefdlen); i++) {
if (FD_ISSET(external_writefd[i], &writefds)) {
DEBUGMSGTL(("snmpd/select", "writefd[%d] = %d\n",
i, external_writefd[i]));
external_writefdfunc[i] (external_writefd[i],
external_writefd_data[i]);
FD_CLR(external_writefd[i], &writefds);
count--;
}
}
for (i = 0; count && (i < external_exceptfdlen); i++) {
if (FD_ISSET(external_exceptfd[i], &exceptfds)) {
DEBUGMSGTL(("snmpd/select", "exceptfd[%d] = %d\n",
i, external_exceptfd[i]));
external_exceptfdfunc[i] (external_exceptfd[i],
external_exceptfd_data[i]);
FD_CLR(external_exceptfd[i], &exceptfds);
count--;
}
}
} else
switch (count) {
case 0:
snmp_timeout();
break;
case -1:
if (errno == EINTR) {
/*
* likely that we got a signal. Check our special signal
* flags before retrying select.
*/
if (netsnmp_running && !reconfig) {
goto reselect;
}
continue;
} else {
snmp_log_perror("select");
}
return -1;
default:
snmp_log(LOG_ERR, "select returned %d\n", count);
return -1;
} /* endif -- count>0 */
/*
* If the time 'now' is greater than the 'sched'uled time, then:
*
* Check alarm and event timers.
* Reset the 'sched'uled time to current time + one TIMETICK.
* Age the cache network addresses (from whom messges have
* been received).
*/
gettimeofday(nvp, (struct timezone *)NULL);
if (nvp->tv_sec > svp->tv_sec || (nvp->tv_sec == svp->tv_sec &&
nvp->tv_usec > svp->tv_usec)) {
svp->tv_usec = nvp->tv_usec + TIMETICK;
svp->tv_sec = nvp->tv_sec;
while (svp->tv_usec >= ONE_SEC) {
svp->tv_usec -= ONE_SEC;
svp->tv_sec++;
}
}
/*
* endif -- now>sched
*/
/*
* run requested alarms
*/
run_alarms();
netsnmp_check_outstanding_agent_requests();
} /* endwhile */
snmp_log(LOG_INFO, "Received TERM or STOP signal... shutting down...\n");
return 0;
} /* end receive() */
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::fhHI:l:LP:qrsS:UvV-:";
int arg, i, ret;
int dont_fork = 0;
int dont_zero_log = 0;
int stderr_log = 0, syslog_log = 0;
int uid = 0, gid = 0;
int agent_mode = -1;
char logfile[PATH_MAX + 1] = { 0 };
char *cptr, **argvptr;
char *pid_file = NULL;
#if HAVE_GETPID
int fd;
FILE *PID;
#endif
#ifdef LOGFILE
strncpy(logfile, LOGFILE, PATH_MAX);
#endif
#ifdef NO_ROOT_ACCESS
/*
* Default to no.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
#endif
/*
* Default to NOT running an AgentX master.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 0);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_TIMEOUT, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_RETRIES, -1);
/*
* Add some options if they are available.
*/
#if HAVE_UNISTD_H
strcat(options, "g:u:");
#endif
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
strcat(options, "x:");
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
strcat(options, "X");
#endif
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0) {
usage(argv[0]);
}
if (strcasecmp(optarg, "version") == 0) {
version();
}
handle_long_opt(optarg);
break;
case 'a':
log_addresses++;
break;
case 'A':
dont_zero_log = 1;
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage(argv[0]);
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
snmp_set_dump_packet(++snmp_dump_packet);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, atoi(optarg));
} else {
usage(argv[0]);
}
break;
#endif
case 'h':
usage(argv[0]);
break;
case 'H':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
init_agent("snmpd"); /* register our .conf handlers */
init_mib_modules();
init_snmp("snmpd");
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage(argv[0]);
}
break;
case 'l':
if (optarg != NULL) {
if (strlen(optarg) > PATH_MAX) {
fprintf(stderr,
"%s: logfile path too long (limit %d chars)\n",
argv[0], PATH_MAX);
exit(1);
}
strncpy(logfile, optarg, PATH_MAX);
} else {
usage(argv[0]);
}
break;
case 'L':
stderr_log = 1;
break;
case 'P':
if (optarg != NULL) {
pid_file = optarg;
} else {
usage(argv[0]);
}
break;
case 'q':
snmp_set_quick_print(1);
break;
case 'r':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
break;
case 's':
syslog_log = 1;
break;
case 'S':
if (optarg != NULL) {
switch (*optarg) {
case 'd':
case 'D':
Facility = LOG_DAEMON;
break;
case 'i':
case 'I':
Facility = LOG_INFO;
break;
case '0':
Facility = LOG_LOCAL0;
break;
case '1':
Facility = LOG_LOCAL1;
break;
case '2':
Facility = LOG_LOCAL2;
break;
case '3':
Facility = LOG_LOCAL3;
break;
case '4':
Facility = LOG_LOCAL4;
break;
case '5':
Facility = LOG_LOCAL5;
break;
case '6':
Facility = LOG_LOCAL6;
break;
case '7':
Facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "invalid syslog facility: -S%c\n",*optarg);
usage(argv[0]);
}
} else {
fprintf(stderr, "no syslog facility specified\n");
usage(argv[0]);
}
break;
case 'U':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE);
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
int uid;
uid = strtoul(optarg, &ecp, 10);
if (*ecp) {
#if HAVE_GETPWNAM && HAVE_PWD_H
struct passwd *info;
info = getpwnam(optarg);
if (info) {
uid = info->pw_uid;
} else {
#endif
fprintf(stderr, "Bad user id: %s\n", optarg);
exit(1);
#if HAVE_GETPWNAM && HAVE_PWD_H
}
#endif
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage(argv[0]);
}
break;
#endif
case 'v':
version();
case 'V':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage(argv[0]);
}
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 1);
break;
#endif
case 'X':
#if defined(USING_AGENTX_SUBAGENT_MODULE)
agent_mode = SUB_AGENT;
#else
fprintf(stderr, "%s: Illegal argument -X:"
"AgentX support not compiled in.\n", argv[0]);
usage(argv[0]);
exit(1);
#endif
break;
default:
usage(argv[0]);
break;
}
}
if (optind < argc) {
/*
* There are optional transport addresses on the command line.
*/
DEBUGMSGTL(("snmpd/main", "optind %d, argc %d\n", optind, argc));
for (i = optind; i < argc; i++) {
char *c, *astring;
if ((c = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS))) {
astring = malloc(strlen(c) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
sprintf(astring, "%s,%s", c, argv[i]);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, astring);
free(astring);
} else {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, argv[i]);
}
}
DEBUGMSGTL(("snmpd/main", "port spec: %s\n",
netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS)));
}
setup_log(0, dont_zero_log, stderr_log, syslog_log, logfile);
/*
* Initialize a argv set to the current for restarting the agent.
*/
argvrestartp = (char **)malloc((argc + 2) * sizeof(char *));
argvptr = argvrestartp;
for (i = 0, ret = 1; i < argc; i++) {
ret += strlen(argv[i]) + 1;
}
argvrestart = (char *) malloc(ret);
argvrestartname = (char *) malloc(strlen(argv[0]) + 1);
if (!argvrestartp || !argvrestart || !argvrestartname) {
fprintf(stderr, "malloc failure processing argvrestart\n");
exit(1);
}
strcpy(argvrestartname, argv[0]);
if (agent_mode == -1) {
if (strstr(argvrestartname, "agentxd") != NULL) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, SUB_AGENT);
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, MASTER_AGENT);
}
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, agent_mode);
}
for (cptr = argvrestart, i = 0; i < argc; i++) {
strcpy(cptr, argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
*cptr = 0;
*argvptr = NULL;
#ifdef BUFSIZ
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
#endif
/*
* Initialize the world. Detach from the shell. Create initial user.
*/
#if HAVE_FORK
if (!dont_fork) {
/*
* Fork to return control to the invoking process and to
* guarantee that we aren't a process group leader.
*/
if (fork() != 0) {
/* Parent. */
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY)) {
exit(0);
}
} else {
/* Child. */
#ifdef HAVE_SETSID
/* Become a process/session group leader. */
setsid();
#endif
/*
* Fork to let the process/session group leader exit.
*/
if (fork() != 0) {
/* Parent. */
exit(0);
}
#ifndef WIN32
else {
/* Child. */
/* Avoid keeping any directory in use. */
chdir("/");
if (!stderr_log) {
/*
* Close inherited file descriptors to avoid
* keeping unnecessary references.
*/
close(0);
close(1);
close(2);
/*
* Redirect std{in,out,err} to /dev/null, just in
* case.
*/
open("/dev/null", O_RDWR);
dup(0);
dup(0);
}
}
#endif /* !WIN32 */
}
}
#endif /* HAVE_FORK */
SOCK_STARTUP;
init_agent("snmpd"); /* do what we need to do first. */
init_mib_modules();
/*
* start library
*/
init_snmp("snmpd");
if ((ret = init_master_agent()) != 0) {
/*
* Some error opening one of the specified agent transports.
*/
Exit(1); /* Exit logs exit val for us */
}
#ifdef SIGTERM
DEBUGMSGTL(("signal", "registering SIGTERM signal handler\n"));
signal(SIGTERM, SnmpdShutDown);
#endif
#ifdef SIGINT
DEBUGMSGTL(("signal", "registering SIGINT signal handler\n"));
signal(SIGINT, SnmpdShutDown);
#endif
#ifdef SIGHUP
DEBUGMSGTL(("signal", "registering SIGHUP signal handler\n"));
signal(SIGHUP, SnmpdReconfig);
#endif
#ifdef SIGUSR1
DEBUGMSGTL(("signal", "registering SIGUSR1 signal handler\n"));
signal(SIGUSR1, SnmpdDump);
#endif
#ifdef SIGPIPE
DEBUGMSGTL(("signal", "registering SIGPIPE signal handler\n"));
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
/*
* Store persistent data immediately in case we crash later.
*/
snmp_store("snmpd");
/*
* Send coldstart trap if possible.
*/
send_easy_trap(0, 0);
#if HAVE_GETPID
if (pid_file != NULL) {
/*
* unlink the pid_file, if it exists, prior to open. Without
* doing this the open will fail if the user specified pid_file
* already exists.
*/
unlink(pid_file);
fd = open(pid_file, O_CREAT | O_EXCL | O_WRONLY, 0600);
if (fd == -1) {
snmp_log_perror(pid_file);
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
} else {
if ((PID = fdopen(fd, "w")) == NULL) {
snmp_log_perror(pid_file);
exit(1);
} else {
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
}
close(fd);
}
}
#endif
#if HAVE_UNISTD_H
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) != 0) {
DEBUGMSGTL(("snmpd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) != 0) {
DEBUGMSGTL(("snmpd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#endif
/*
* We're up, log our version number.
*/
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
#ifdef WIN32
agent_status = AGENT_RUNNING;
#endif
netsnmp_addrcache_initialise();
/*
* Forever monitor the dest_port for incoming PDUs.
*/
DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n"));
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY))
receive();
#include "mib_module_shutdown.h"
DEBUGMSGTL(("snmpd/main", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd/main", "Bye...\n"));
snmp_shutdown("snmpd");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE) &&
(pid_file != NULL)) {
unlink(pid_file);
}
#ifdef WIN32
agent_status = AGENT_STOPPED;
#endif
return 0;
} /* End main() -- snmpd */
int
main(int argc, char *argv[])
{
int arg, i;
int ret;
u_short dest_port = SNMP_PORT;
int dont_fork = 0;
char logfile[SNMP_MAXBUF_SMALL];
char *cptr, **argvptr;
char *pid_file = NULL;
#if HAVE_GETPID
FILE *PID;
#endif
int dont_zero_log = 0;
int stderr_log=0, syslog_log=0;
int uid=0, gid=0;
logfile[0] = 0;
#ifdef LOGFILE
strcpy(logfile, LOGFILE);
#endif
/*
* usage: snmpd
*/
for (arg = 1; arg < argc; arg++)
{
if (argv[arg][0] == '-') {
switch (argv[arg][1]) {
case 'c':
if (++arg == argc)
usage(argv[0]);
ds_set_string(DS_LIBRARY_ID, DS_LIB_OPTIONALCONFIG,
argv[arg]);
break;
case 'C':
ds_set_boolean(DS_LIBRARY_ID, DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
snmp_set_dump_packet(++snmp_dump_packet);
ds_set_boolean(DS_APPLICATION_ID, DS_AGENT_VERBOSE, 1);
break;
case 'q':
snmp_set_quick_print(1);
break;
case 'T':
if (argv[arg][2] != '\0')
cptr = &argv[arg][2];
else if (++arg>argc) {
fprintf(stderr,"Need UDP or TCP after -T flag.\n");
usage(argv[0]);
exit(1);
} else {
cptr = argv[arg];
}
if (strcasecmp(cptr,"TCP") == 0) {
ds_set_int(DS_APPLICATION_ID, DS_AGENT_FLAGS,
ds_get_int(DS_APPLICATION_ID, DS_AGENT_FLAGS)
| SNMP_FLAGS_STREAM_SOCKET);
} else if (strcasecmp(cptr,"UDP") == 0) {
/* default, do nothing */
} else {
fprintf(stderr,
"Unknown transport \"%s\" after -T flag.\n",
cptr);
usage(argv[0]);
exit(1);
}
break;
case 'D':
debug_register_tokens(&argv[arg][2]);
snmp_set_do_debugging(1);
break;
case 'p':
if (++arg == argc)
usage(argv[0]);
dest_port = atoi(argv[arg]);
if (dest_port <= 0)
usage(argv[0]);
break;
case 'x':
if (++arg == argc)
usage(argv[0]);
ds_set_string(DS_APPLICATION_ID, DS_AGENT_X_SOCKET, argv[arg]);
break;
case 'r':
ds_set_boolean(DS_APPLICATION_ID,
DS_AGENT_NO_ROOT_ACCESS, 1);
break;
case 'P':
if (++arg == argc)
usage(argv[0]);
pid_file = argv[arg];
case 'a':
log_addresses++;
break;
case 'V':
ds_set_boolean(DS_APPLICATION_ID, DS_AGENT_VERBOSE, 1);
break;
case 'f':
dont_fork = 1;
break;
case 'l':
if (++arg == argc)
usage(argv[0]);
strcpy(logfile, argv[arg]);
break;
case 'L':
stderr_log=1;
break;
case 's':
syslog_log=1;
break;
case 'A':
dont_zero_log = 1;
break;
#if HAVE_UNISTD_H
case 'u':
if (++arg == argc) usage(argv[0]);
uid = atoi(argv[arg]);
break;
case 'g':
if (++arg == argc) usage(argv[0]);
gid = atoi(argv[arg]);
break;
#endif
case 'h':
usage(argv[0]);
break;
case 'H':
init_agent("snmpd"); /* register our .conf handlers */
init_mib_modules();
init_snmp("snmpd");
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
case 'v':
printf("\nUCD-snmp version: %s\n",VersionInfo);
printf("Author: Wes Hardaker\n");
printf("Email: [email protected]\n\n");
exit (0);
case '-':
switch(argv[arg][2]) {
case 'v':
printf("\nUCD-snmp version: %s\n",VersionInfo);
printf("Author: Wes Hardaker\n");
printf("Email: [email protected]\n\n");
exit (0);
case 'h':
usage(argv[0]);
exit(0);
}
default:
printf("invalid option: %s\n", argv[arg]);
usage(argv[0]);
break;
}
continue;
}
} /* end-for */
/*
* Initialize a argv set to the current for restarting the agent.
*/
argvrestartp = (char **) malloc((argc + 2) * sizeof(char *));
argvptr = argvrestartp;
for (i = 0, ret = 1; i < argc; i++) {
ret += strlen(argv[i]) + 1;
}
argvrestart = (char *) malloc(ret);
argvrestartname = (char *) malloc(strlen(argv[0]) + 1);
strcpy(argvrestartname, argv[0]);
if ( strstr(argvrestartname, "agentxd") != NULL)
ds_set_boolean(DS_APPLICATION_ID, DS_AGENT_ROLE, SUB_AGENT);
else
ds_set_boolean(DS_APPLICATION_ID, DS_AGENT_ROLE, MASTER_AGENT);
for (cptr = argvrestart, i = 0; i < argc; i++) {
strcpy(cptr, argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
*cptr = 0;
*argvptr = NULL;
/*
* Open the logfile if necessary.
*/
/* Should open logfile and/or syslog based on arguments */
if (logfile[0])
snmp_enable_filelog(logfile, dont_zero_log);
if (syslog_log)
snmp_enable_syslog();
#ifdef BUFSIZ
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
#endif
/*
* Initialize the world. Detach from the shell.
* Create initial user.
*/
#if HAVE_FORK
if (!dont_fork && fork() != 0) {
exit(0);
}
#endif
#if HAVE_GETPID
if (pid_file != NULL) {
if ((PID = fopen(pid_file, "w")) == NULL) {
snmp_log_perror("fopen");
if (!ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_NO_ROOT_ACCESS))
exit(1);
}
else {
fprintf(PID, "%d\n", (int)getpid());
fclose(PID);
}
}
#endif
#else /* __ECOS environment: */
void snmpd( void *initfunc( void ) ) {
int ret;
u_short dest_port = SNMP_PORT;
#define stderr_log 1
#endif
// ---------
// En-bloc reinitialization of statics.
running = 1;
// ---------
SOCK_STARTUP;
init_agent("snmpd"); /* do what we need to do first. */
init_mib_modules();
/* start library */
init_snmp("snmpd");
ret = init_master_agent( dest_port,
snmp_check_packet,
snmp_check_parse );
if( ret != 0 )
Exit(1); /* Exit logs exit val for us */
#ifdef SIGTERM
signal(SIGTERM, SnmpdShutDown);
#endif
#ifdef SIGINT
signal(SIGINT, SnmpdShutDown);
#endif
#ifdef SIGHUP
signal(SIGHUP, SnmpdReconfig);
#endif
#ifdef SIGUSR1
signal(SIGUSR1, SnmpdDump);
#endif
/* send coldstart trap via snmptrap(1) if possible */
send_easy_trap (0, 0);
#if HAVE_UNISTD_H
if (gid) {
DEBUGMSGTL(("snmpd", "Changing gid to %d.\n", gid));
if (setgid(gid)==-1) {
snmp_log_perror("setgid failed");
if (!ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_NO_ROOT_ACCESS))
exit(1);
}
}
if (uid) {
DEBUGMSGTL(("snmpd", "Changing uid to %d.\n", uid));
if(setuid(uid)==-1) {
snmp_log_perror("setuid failed");
if (!ds_get_boolean(DS_APPLICATION_ID, DS_AGENT_NO_ROOT_ACCESS))
exit(1);
}
}
#endif
/* honor selection of standard error output */
if (!stderr_log)
snmp_disable_stderrlog();
/* we're up, log our version number */
snmp_log(LOG_INFO, "UCD-SNMP version %s\n", VersionInfo);
memset(addrCache, 0, sizeof(addrCache));
/*
* Call initialization function if necessary
*/
DEBUGMSGTL(("snmpd", "Calling initfunc().\n"));
if ( initfunc )
(initfunc)();
/*
* Forever monitor the dest_port for incoming PDUs.
*/
DEBUGMSGTL(("snmpd", "We're up. Starting to process data.\n"));
receive();
#include "mib_module_shutdown.h"
DEBUGMSGTL(("snmpd", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd", "Bye...\n"));
snmp_shutdown("snmpd");
} /* End main() -- snmpd */
