void view_oid (oid * it, size_t * len, const char *viewName, char *viewSubtree)
{
int i;
oid c_oid[SPRINT_MAX_LEN];
size_t c_oid_length = SPRINT_MAX_LEN;
int itIndex = VIEW_OID_LEN;
if (!snmp_parse_oid (viewSubtree, c_oid, &c_oid_length))
{
printf ("Error parsing subtree (%s)\n", viewSubtree);
exit (1);
}
*len = itIndex + 2 + strlen (viewName) + c_oid_length;
it[itIndex++] = strlen (viewName);
for (i = 0; i < (int) strlen (viewName); i++)
it[itIndex++] = viewName[i];
it[itIndex++] = c_oid_length;
for (i = 0; i < (int) c_oid_length; i++)
it[itIndex++] = c_oid[i];
/*
* sprint_objid(c_oid, it, *len);
*/
}
int
add(netsnmp_pdu *pdu, const char *mibnodename,
oid * index, size_t indexlen)
{
oid base[MAX_OID_LEN];
size_t base_length = MAX_OID_LEN;
memset(base, 0, MAX_OID_LEN * sizeof(oid));
if (!snmp_parse_oid(mibnodename, base, &base_length)) {
snmp_perror(mibnodename);
fprintf(stderr, "couldn't find mib node %s, giving up\n",
mibnodename);
#if HAVE_CURSES_H
endwin();
#endif
exit(1);
}
if (index && indexlen) {
memcpy(&(base[base_length]), index, indexlen * sizeof(oid));
base_length += indexlen;
}
DEBUGMSGTL(("add", "created: "));
DEBUGMSGOID(("add", base, base_length));
DEBUGMSG(("add", "\n"));
snmp_add_null_var(pdu, base, base_length);
return base_length;
}
/**
* The 'raw' SNMP set function. It should not be used directly in external
* files. Rather, a non-static wrapper function should be created here that
* makes the appropriate call in order to preserve source code readability.
*
* @return 1 if successful, 0 if not
*/
static int snmp_set(netsnmp_session *s, char *oid_str, char type, const char *val)
{
netsnmp_pdu *pdu;
oid the_oid[MAX_OID_LEN];
size_t oid_len;
pdu = snmp_pdu_create(SNMP_MSG_SET);
oid_len = MAX_OID_LEN;
// Parse the OID
if (snmp_parse_oid(oid_str, the_oid, &oid_len) == 0) {
snmp_perror(oid_str);
return 0;
}
// Build the packet to be sent
if (snmp_add_var(pdu, the_oid, oid_len, type, val) != 0) {
printf("type: %c, val: %s, oid_str: %s\n", type, val, oid_str);
snmp_perror("SNMP: Could not add var!");
return 0;
}
// Send the request
if (snmp_send(s, pdu) == 0) {
snmp_perror("SNMP: Error while sending!");
snmp_free_pdu(pdu);
return 0;
}
return 1;
}
void
simpleSNMPsend(struct snmp_session *session,
oid *name,
size_t name_length)
{
struct snmp_pdu *pdu;
oid uptime[MAX_OID_LEN];
size_t uptime_length;
/*
* Create PDU for GET request and add object names to request.
*/
pdu = snmp_pdu_create(SNMP_MSG_GET);
/*
* First insert uptime request into PDU.
*/
uptime_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysUpTime.0",
uptime, &uptime_length)) {
printf("error parsing oid: system.sysUpTime.0\n");
}
snmp_add_null_var(pdu, uptime, uptime_length);
snmp_add_null_var(pdu, name, name_length);
/*
* Perform the request.
*/
snmp_send(session, pdu);
}
static inline void add_field (
netsnmp_pdu *trap_pdu,
u_char asn_type,
const char *prefix,
void *value,
size_t value_size)
{
oid _oid[MAX_OID_LEN];
size_t _oid_len = MAX_OID_LEN;
if (snmp_parse_oid(prefix, _oid, &_oid_len)) {
snmp_pdu_add_variable (trap_pdu, _oid, _oid_len, asn_type, (u_char *) value, value_size);
}
}
static int csnmp_config_add_data_values (data_definition_t *dd, oconfig_item_t *ci)
{
int i;
if (ci->values_num < 1)
{
WARNING ("snmp plugin: `Values' needs at least one argument.");
return (-1);
}
for (i = 0; i < ci->values_num; i++)
if (ci->values[i].type != OCONFIG_TYPE_STRING)
{
WARNING ("snmp plugin: `Values' needs only string argument.");
return (-1);
}
sfree (dd->values);
dd->values_len = 0;
dd->values = (oid_t *) malloc (sizeof (oid_t) * ci->values_num);
if (dd->values == NULL)
return (-1);
dd->values_len = (size_t) ci->values_num;
for (i = 0; i < ci->values_num; i++)
{
dd->values[i].oid_len = MAX_OID_LEN;
if (NULL == snmp_parse_oid (ci->values[i].value.string,
dd->values[i].oid, &dd->values[i].oid_len))
{
ERROR ("snmp plugin: snmp_parse_oid (%s) failed.",
ci->values[i].value.string);
free (dd->values);
dd->values = NULL;
dd->values_len = 0;
return (-1);
}
}
return (0);
} /* int csnmp_config_add_data_instance */
static void add_pdu_var(netsnmp_pdu *pdu, const char *mib_name, int id, const char *value)
{
oid oid_name[MAX_OID_LEN];
size_t name_length;
char buf[4096];
buf[4095] = '\0';
snprintf(buf, sizeof(buf)-1, "%s.%d", mib_name, id);
name_length = MAX_OID_LEN;
if (snmp_parse_oid(buf, oid_name, &name_length) == NULL) {
snmp_perror(buf);
return;
}
if (snmp_add_var(pdu, oid_name, name_length, '=', value)) {
snmp_perror(buf);
return;
}
}
int main(int argc, char ** argv)
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu;
netsnmp_pdu *response;
oid anOID[MAX_OID_LEN];
size_t anOID_len;
netsnmp_variable_list *vars;
int status;
int count=1;
/*
* Initialize the SNMP library
*/
init_snmp("snmpdemoapp");
/*
* Initialize a "session" that defines who we're going to talk to
*/
snmp_sess_init( &session ); /* set up defaults */
session.peername = strdup("test.net-snmp.org");
/* set up the authentication parameters for talking to the server */
#ifdef DEMO_USE_SNMP_VERSION_3
/* Use SNMPv3 to talk to the experimental server */
/* set the SNMP version number */
session.version=SNMP_VERSION_3;
/* set the SNMPv3 user name */
session.securityName = strdup("MD5User");
session.securityNameLen = strlen(session.securityName);
/* set the security level to authenticated, but not encrypted */
session.securityLevel = SNMP_SEC_LEVEL_AUTHNOPRIV;
/* set the authentication method to MD5 */
session.securityAuthProto = usmHMACMD5AuthProtocol;
session.securityAuthProtoLen = sizeof(usmHMACMD5AuthProtocol)/sizeof(oid);
session.securityAuthKeyLen = USM_AUTH_KU_LEN;
/* set the authentication key to a MD5 hashed version of our
passphrase "The Net-SNMP Demo Password" (which must be at least 8
characters long) */
if (generate_Ku(session.securityAuthProto,
session.securityAuthProtoLen,
(u_char *) our_v3_passphrase, strlen(our_v3_passphrase),
session.securityAuthKey,
&session.securityAuthKeyLen) != SNMPERR_SUCCESS) {
snmp_perror(argv[0]);
snmp_log(LOG_ERR,
"Error generating Ku from authentication pass phrase. \n");
exit(1);
}
#else /* we'll use the insecure (but simplier) SNMPv1 */
/* set the SNMP version number */
session.version = SNMP_VERSION_1;
/* set the SNMPv1 community name used for authentication */
session.community = "demopublic";
session.community_len = strlen(session.community);
#endif /* SNMPv1 */
/*
* Open the session
*/
SOCK_STARTUP;
ss = snmp_open(&session); /* establish the session */
if (!ss) {
snmp_sess_perror("ack", &session);
SOCK_CLEANUP;
exit(1);
}
/*
* Create the PDU for the data for our request.
* 1) We're going to GET the system.sysDescr.0 node.
*/
pdu = snmp_pdu_create(SNMP_MSG_GET);
anOID_len = MAX_OID_LEN;
if (!snmp_parse_oid(".1.3.6.1.2.1.1.1.0", anOID, &anOID_len)) {
snmp_perror(".1.3.6.1.2.1.1.1.0");
SOCK_CLEANUP;
exit(1);
}
#if OTHER_METHODS
/*
* These are alternatives to the 'snmp_parse_oid' call above,
* e.g. specifying the OID by name rather than numerically.
*/
read_objid(".1.3.6.1.2.1.1.1.0", anOID, &anOID_len);
get_node("sysDescr.0", anOID, &anOID_len);
read_objid("system.sysDescr.0", anOID, &anOID_len);
#endif
snmp_add_null_var(pdu, anOID, anOID_len);
/*
* Send the Request out.
*/
status = snmp_synch_response(ss, pdu, &response);
/*
* Process the response.
*/
if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) {
/*
* SUCCESS: Print the result variables
*/
for(vars = response->variables; vars; vars = vars->next_variable)
print_variable(vars->name, vars->name_length, vars);
/* manipuate the information ourselves */
for(vars = response->variables; vars; vars = vars->next_variable) {
if (vars->type == ASN_OCTET_STR) {
char *sp = (char *)malloc(1 + vars->val_len);
memcpy(sp, vars->val.string, vars->val_len);
sp[vars->val_len] = '\0';
printf("value #%d is a string: %s\n", count++, sp);
free(sp);
}
else
printf("value #%d is NOT a string! Ack!\n", count++);
}
} else {
/*
* FAILURE: print what went wrong!
*/
if (status == STAT_SUCCESS)
fprintf(stderr, "Error in packet\nReason: %s\n",
snmp_errstring(response->errstat));
else if (status == STAT_TIMEOUT)
fprintf(stderr, "Timeout: No response from %s.\n",
session.peername);
else
snmp_sess_perror("snmpdemoapp", ss);
}
/*
* Clean up:
* 1) free the response.
* 2) close the session.
*/
if (response)
snmp_free_pdu(response);
snmp_close(ss);
SOCK_CLEANUP;
return (0);
} /* main() */
/** * Bulk walk snmp value to the structure my_oid_result array. * Author : lining 15810423651 [email protected] * @param peername : the remote host ip address. * @param oid_argv : the char *oid pointer. * @param my_oid_result oid_results : the return values array. * @param my_oid_result oid_results_nums : the values array numbers. * @return 0 on success, or others on failure. * @return 1 on failure, the argument error. * @return 2 on failure, snmp_open return error. * @return 3 on failure, snmp_parse_oid return error. * @return 4 on failure, snmp_synch_response return status time out. * @return 5 on failure, snmp_synch_response return status others. * @return 6 on failure, response->errstat end of mib. * @return 7 on failure, response->errstat others. */ int my_snmp_bulkwalk(const char *peername, const char *community, const char *oid_argv, my_oid_result *oid_results, unsigned int *oid_results_nums) { if(peername == NULL) { printf("[ERROR] my_snmp_walk: the peername pointer is null\n"); return 1; } if(community == NULL) { printf("[ERROR] my_snmp_walk: the community pointer is null\n"); return 1; } if(oid_argv == NULL) { printf("[ERROR] my_snmp_walk: the oid_argv pointer is null\n"); return 1; } netsnmp_session session,*ss; netsnmp_pdu *pdu, *response; netsnmp_variable_list *vars; int arg; oid name[MAX_OID_LEN]; size_t name_length; oid root[MAX_OID_LEN]; size_t rootlen; int count; int running; int status; int check; int numprinted = 0; int reps = 10, non_reps = 0; netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "includeRequested", NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_INCLUDE_REQUESTED); netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "printStatistics", NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_PRINT_STATISTICS); netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "dontCheckOrdering", NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC); init_snmp("snmpapp"); snmp_sess_init(&session); session.version = SNMP_VERSION_2c; session.community = (char*)community; session.community_len = strlen(session.community); session.peername = (char*)peername; session.timeout = 1000000; session.retries = 1; rootlen = MAX_OID_LEN; if(snmp_parse_oid(oid_argv, root, &rootlen) == NULL) { printf("[ERROR] my_snmp_bulkwalk: call snmp_parse_oid function failed\n"); snmp_close(ss); SOCK_CLEANUP; return 2; } SOCK_STARTUP; ss = snmp_open(&session); if(ss == NULL) { printf("[ERROR] my_snmp_bulkwalk: cakk snnp_open function failed\n"); snmp_close(ss); SOCK_CLEANUP; return 3; } memmove(name, root, rootlen * sizeof(oid)); name_length = rootlen; running = 1; check = !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC); while(running) { pdu = snmp_pdu_create(SNMP_MSG_GETBULK); pdu->non_repeaters = non_reps; pdu->max_repetitions = reps; snmp_add_null_var(pdu, name, name_length); 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((vars->name_length < rootlen) || (memcmp(root, vars->name, rootlen * sizeof(oid)) != 0)) { running = 0; continue; } get_bulkwalk_oid_values(vars, &oid_results[numprinted]); numprinted++; if((vars->type != SNMP_ENDOFMIBVIEW) && (vars->type != SNMP_NOSUCHOBJECT) && (vars->type != SNMP_NOSUCHINSTANCE)) { if(check && snmp_oid_compare(name, name_length, vars->name, vars->name_length) >= 0) { running = 0; } if(vars->next_variable == NULL) { unsigned int count; for(count = 0; count < vars->name_length; count++) { oid_results[numprinted - 1].oid_name[count] = vars->name[count]; oid_results[numprinted - 1].oid_name_length = vars->name_length; } memmove(name, vars->name, vars->name_length * sizeof(oid)); name_length = vars->name_length; } } else { running = 0; } } } else { running = 0; if(response->errstat == SNMP_ERR_NOSUCHNAME) { printf("[ERROR] my_snmp_bulkwalk: have reached the end of MIB file\n"); *oid_results_nums = numprinted; snmp_close(ss); SOCK_CLEANUP; return 6; } else { printf("[ERROR] my_snmp_bulkwalk: return response->errstat others error\n"); *oid_results_nums = numprinted; snmp_close(ss); SOCK_CLEANUP; return 7; } } } else if(status == STAT_TIMEOUT) { printf("[ERROR] my_snmp_bulkwalk: return status is session time out\n"); running = 0; *oid_results_nums = numprinted; snmp_close(ss); SOCK_CLEANUP; return 4; } else { printf("[ERROR] my_snmp_bulkwalk: return session response error\n"); running = 0; *oid_results_nums = numprinted; snmp_close(ss); SOCK_CLEANUP; return 5; } if(response) { snmp_free_pdu(response); } } *oid_results_nums = numprinted; snmp_close(ss); SOCK_CLEANUP; return 0; }
/** @internal */
void
netsnmp_config_parse_table_set(const char *token, char *line)
{
oid name[MAX_OID_LEN], table_name[MAX_OID_LEN];
size_t name_length = MAX_OID_LEN, table_name_length =
MAX_OID_LEN;
struct tree *tp, *indexnode;
netsnmp_table_data_set *table_set;
data_set_tables *tables;
struct index_list *index;
unsigned int mincol = 0xffffff, maxcol = 0;
u_char type;
char *pos;
/*
* instatiate a fake table based on MIB information
*/
DEBUGMSGTL(("9:table_set_add_table", "processing '%s'\n", line));
if (NULL != (pos = strchr(line,' '))) {
config_pwarn("ignoring extra tokens on line");
snmp_log(LOG_WARNING," ignoring '%s'\n", pos);
*pos = '\0';
}
/*
* check for duplicate table
*/
tables = (data_set_tables *) netsnmp_get_list_data(auto_tables, line);
if (NULL != tables) {
config_pwarn("duplicate table definition");
return;
}
/*
* parse oid and find tree structure
*/
if (!snmp_parse_oid(line, table_name, &table_name_length)) {
config_pwarn
("can't instatiate table since I can't parse the table name");
return;
}
if(NULL == (tp = get_tree(table_name, table_name_length,
get_tree_head()))) {
config_pwarn("can't instatiate table since "
"I can't find mib information about it");
return;
}
if (NULL == (tp = tp->child_list) || NULL == tp->child_list) {
config_pwarn("can't instatiate table since it doesn't appear to be "
"a proper table (no children)");
return;
}
/*
* check for augments indexes
*/
if (NULL != tp->augments) {
if (!snmp_parse_oid(tp->augments, table_name, &table_name_length)) {
config_pwarn("I can't parse the augment tabel name");
snmp_log(LOG_WARNING, " can't parse %s\n", tp->augments);
return;
}
if(NULL == (tp = get_tree(table_name, table_name_length,
get_tree_head()))) {
config_pwarn("can't instatiate table since "
"I can't find mib information about augment table");
snmp_log(LOG_WARNING, " table %s not found in tree\n",
tp->augments);
return;
}
table_set = netsnmp_create_table_data_set(line);
/*
* loop through indexes and add types
*/
for (index = tp->indexes; index; index = index->next) {
if (!snmp_parse_oid(index->ilabel, name, &name_length) ||
(NULL ==
(indexnode = get_tree(name, name_length, get_tree_head())))) {
config_pwarn("can't instatiate table since "
"I don't know anything about one index");
snmp_log(LOG_WARNING, " index %s not found in tree\n",
index->ilabel);
return; /* xxx mem leak */
}
type = mib_to_asn_type(indexnode->type);
if (type == (u_char) - 1) {
config_pwarn("unknown index type");
return; /* xxx mem leak */
}
if (index->isimplied) /* if implied, mark it as such */
type |= ASN_PRIVATE;
DEBUGMSGTL(("table_set_add_row",
"adding default index of type %d\n", type));
netsnmp_table_dataset_add_index(table_set, type);
}
}
else
table_set = netsnmp_create_table_data_set(line);
/*
* loop through indexes and add types
*/
for (index = tp->indexes; index; index = index->next) {
if (!snmp_parse_oid(index->ilabel, name, &name_length) ||
(NULL ==
(indexnode = get_tree(name, name_length, get_tree_head())))) {
config_pwarn("can't instatiate table since "
"I don't know anything about one index");
snmp_log(LOG_WARNING, " index %s not found in tree\n",
index->ilabel);
return; /* xxx mem leak */
}
type = mib_to_asn_type(indexnode->type);
if (type == (u_char) - 1) {
config_pwarn("unknown index type");
return; /* xxx mem leak */
}
if (index->isimplied) /* if implied, mark it as such */
type |= ASN_PRIVATE;
DEBUGMSGTL(("table_set_add_row",
"adding default index of type %d\n", type));
netsnmp_table_dataset_add_index(table_set, type);
}
/*
* loop through children and add each column info
*/
for (tp = tp->child_list; tp; tp = tp->next_peer) {
int canwrite = 0;
type = mib_to_asn_type(tp->type);
if (type == (u_char) - 1) {
config_pwarn("unknown column type");
return; /* xxx mem leak */
}
DEBUGMSGTL(("table_set_add_row",
"adding column %s(%d) of type %d (access %d)\n",
tp->label, tp->subid, type, tp->access));
switch (tp->access) {
case MIB_ACCESS_CREATE:
table_set->allow_creation = 1;
case MIB_ACCESS_READWRITE:
case MIB_ACCESS_WRITEONLY:
canwrite = 1;
case MIB_ACCESS_READONLY:
DEBUGMSGTL(("table_set_add_row",
"adding column %d of type %d\n", tp->subid, type));
netsnmp_table_set_add_default_row(table_set, tp->subid, type,
canwrite, NULL, 0);
mincol = SNMP_MIN(mincol, tp->subid);
maxcol = SNMP_MAX(maxcol, tp->subid);
break;
case MIB_ACCESS_NOACCESS:
case MIB_ACCESS_NOTIFY:
break;
default:
config_pwarn("unknown column access type");
break;
}
}
/*
* register the table
*/
netsnmp_register_table_data_set(netsnmp_create_handler_registration
(line, NULL, table_name,
table_name_length,
HANDLER_CAN_RWRITE), table_set, NULL);
netsnmp_register_auto_data_table(table_set, NULL);
}
int
main(int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu;
netsnmp_pdu *response;
netsnmp_variable_list *vars;
int arg;
int count;
int current_name = 0;
char *names[128];
oid name[MAX_OID_LEN];
size_t name_length;
int status;
int exitval = 0;
/*
* get the common command line arguments
*/
switch (arg = snmp_parse_args(argc, argv, &session, "C:", optProc)) {
case -2:
exit(0);
case -1:
usage();
exit(1);
default:
break;
}
if (arg >= argc) {
fprintf(stderr, "Missing object name\n");
usage();
exit(1);
}
/*
* get the object names
*/
for (; arg < argc; arg++)
names[current_name++] = argv[arg];
SOCK_STARTUP;
/*
* Open an SNMP session.
*/
ss = snmp_open(&session);
if (ss == NULL) {
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror("snmpget", &session);
SOCK_CLEANUP;
exit(1);
}
/*
* Create PDU for GET request and add object names to request.
*/
pdu = snmp_pdu_create(SNMP_MSG_GET);
for (count = 0; count < current_name; count++) {
name_length = MAX_OID_LEN;
if (!snmp_parse_oid(names[count], name, &name_length)) {
snmp_perror(names[count]);
failures++;
} else
snmp_add_null_var(pdu, name, name_length);
}
if (failures) {
SOCK_CLEANUP;
exit(1);
}
/*
* Perform the request.
*
* If the Get Request fails, note the OID that caused the error,
* "fix" the PDU (removing the error-prone OID) and retry.
*/
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)
print_variable(vars->name, vars->name_length, vars);
} else {
fprintf(stderr, "Error in packet\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errindex != 0) {
fprintf(stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++)
/*EMPTY*/;
if (vars) {
fprint_objid(stderr, vars->name, vars->name_length);
}
fprintf(stderr, "\n");
}
exitval = 2;
/*
* retry if the errored variable was successfully removed
*/
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_APP_DONT_FIX_PDUS)) {
pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
snmp_free_pdu(response);
response = NULL;
if (pdu != NULL) {
goto retry;
}
}
} /* endif -- SNMP_ERR_NOERROR */
} else if (status == STAT_TIMEOUT) {
fprintf(stderr, "Timeout: No Response from %s.\n",
session.peername);
exitval = 1;
} else { /* status == STAT_ERROR */
snmp_sess_perror("snmpget", ss);
exitval = 1;
} /* endif -- STAT_SUCCESS */
if (response)
snmp_free_pdu(response);
snmp_close(ss);
SOCK_CLEANUP;
return exitval;
} /* end main() */
static void
apply_plugin_config()
{
Reader *reader, *nreader;
gchar *name;
gint row;
if (!list_modified)
return;
for (reader = readers; reader; reader = readers) {
readers = reader->next;
destroy_reader(reader);
}
for (row = 0; row < GTK_CLIST(reader_clist)->rows; ++row)
{
gint i;
i = 0;
reader = g_new0(Reader, 1);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
gkrellm_dup_string(&reader->label, name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
gkrellm_dup_string(&reader->peer, name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->port = atoi(name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
gkrellm_dup_string(&reader->community, name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
gkrellm_dup_string(&reader->oid_str, name);
reader->objid_length = MAX_OID_LEN;
if (!snmp_parse_oid(reader->oid_str,
reader->objid, &reader->objid_length)) {
//FIXME:
printf("error parsing oid: %s\n", reader->oid_str);
}
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
gkrellm_dup_string(&reader->unit, name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->delay = atoi(name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->divisor = atoi(name);
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->delta = (strcmp(name, "yes") == 0) ? TRUE : FALSE;
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->scale = (strcmp(name, "yes") == 0) ? TRUE : FALSE;
gtk_clist_get_text(GTK_CLIST(reader_clist), row, i++, &name);
reader->active = (strcmp(name, "yes") == 0) ? TRUE : FALSE;
if (!readers)
readers = reader;
else {
for (nreader = readers; nreader->next ; nreader = nreader->next);
nreader->next = reader;
}
create_reader(main_vbox, reader, 1);
}
list_modified = 0;
}
void
netsnmp_parse_override(const char *token, char *line)
{
char *cp;
char buf[SNMP_MAXBUF], namebuf[SNMP_MAXBUF];
int readwrite = 0;
oid oidbuf[MAX_OID_LEN];
size_t oidbuf_len = MAX_OID_LEN;
int type;
override_data *thedata;
netsnmp_handler_registration *the_reg;
cp = copy_nword(line, namebuf, sizeof(namebuf) - 1);
if (strcmp(namebuf, "-rw") == 0) {
readwrite = 1;
cp = copy_nword(cp, namebuf, sizeof(namebuf) - 1);
}
if (!cp) {
config_perror("no oid specified");
return;
}
if (!snmp_parse_oid(namebuf, oidbuf, &oidbuf_len)) {
config_perror("illegal oid");
return;
}
cp = copy_nword(cp, buf, sizeof(buf) - 1);
if (!cp && strcmp(buf, "null") != 0) {
config_perror("no variable value specified");
return;
}
{
struct { const char* key; int value; } const strings[] = {
{ "counter", ASN_COUNTER },
{ "counter64", ASN_COUNTER64 },
{ "integer", ASN_INTEGER },
{ "ipaddress", ASN_IPADDRESS },
{ "nsap", ASN_NSAP },
{ "null", ASN_NULL },
{ "object_id", ASN_OBJECT_ID },
{ "octet_str", ASN_OCTET_STR },
{ "opaque", ASN_OPAQUE },
#ifdef NETSNMP_WITH_OPAQUE_SPECIAL_TYPES
{ "opaque_counter64", ASN_OPAQUE_COUNTER64 },
{ "opaque_double", ASN_OPAQUE_DOUBLE },
{ "opaque_float", ASN_OPAQUE_FLOAT },
{ "opaque_i64", ASN_OPAQUE_I64 },
{ "opaque_u64", ASN_OPAQUE_U64 },
#endif
{ "timeticks", ASN_TIMETICKS },
{ "uinteger", ASN_GAUGE },
{ "unsigned", ASN_UNSIGNED },
{ NULL, 0 }
}, * run;
for(run = strings; run->key && strcasecmp(run->key, buf) < 0; ++run);
if(run->key && strcasecmp(run->key, buf) == 0)
type = run->value;
else {
config_perror("unknown type specified");
return;
}
}
if (cp)
copy_nword(cp, buf, sizeof(buf) - 1);
else
buf[0] = 0;
thedata = SNMP_MALLOC_TYPEDEF(override_data);
if (!thedata) {
config_perror("memory allocation failure");
return;
}
thedata->type = type;
switch (type) {
case ASN_INTEGER:
MALLOC_OR_DIE(sizeof(long));
*((long *) thedata->value) = strtol(buf, NULL, 0);
break;
case ASN_COUNTER:
case ASN_TIMETICKS:
case ASN_UNSIGNED:
MALLOC_OR_DIE(sizeof(u_long));
*((u_long *) thedata->value) = strtoul(buf, NULL, 0);
break;
case ASN_OCTET_STR:
case ASN_BIT_STR:
if (buf[0] == '0' && buf[1] == 'x') {
/*
* hex
*/
thedata->value_len =
hex_to_binary2((u_char *)(buf + 2), strlen(buf) - 2,
(char **) &thedata->value);
} else {
thedata->value = strdup(buf);
thedata->value_len = strlen(buf);
}
break;
case ASN_OBJECT_ID:
read_config_read_objid(buf, (oid **) & thedata->value,
&thedata->value_len);
break;
case ASN_NULL:
thedata->value_len = 0;
break;
default:
SNMP_FREE(thedata);
config_perror("illegal/unsupported type specified");
return;
}
if (!thedata->value && thedata->type != ASN_NULL) {
config_perror("memory allocation failure");
free(thedata);
return;
}
the_reg = SNMP_MALLOC_TYPEDEF(netsnmp_handler_registration);
if (!the_reg) {
config_perror("memory allocation failure");
free(thedata);
return;
}
the_reg->handlerName = strdup(namebuf);
the_reg->priority = 255;
the_reg->modes = (readwrite) ? HANDLER_CAN_RWRITE : HANDLER_CAN_RONLY;
the_reg->handler =
netsnmp_create_handler("override", override_handler);
the_reg->rootoid = snmp_duplicate_objid(oidbuf, oidbuf_len);
the_reg->rootoid_len = oidbuf_len;
if (!the_reg->rootoid || !the_reg->handler || !the_reg->handlerName) {
if (the_reg->handler)
SNMP_FREE(the_reg->handler->handler_name);
SNMP_FREE(the_reg->handler);
SNMP_FREE(the_reg->handlerName);
SNMP_FREE(the_reg);
config_perror("memory allocation failure");
free(thedata);
return;
}
the_reg->handler->myvoid = thedata;
if (netsnmp_register_instance(the_reg)) {
config_perror("oid registration failed within the agent");
SNMP_FREE(thedata->value);
free(thedata);
return;
}
}
int main (int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu;
netsnmp_pdu *response;
netsnmp_variable_list *vars;
int arg;
int count;
int status;
int exitval = 0;
/*
* get the common command line arguments
*/
switch (arg = snmp_parse_args (argc, argv, &session, "C:", optProc))
{
case NETSNMP_PARSE_ARGS_ERROR:
exit (1);
case NETSNMP_PARSE_ARGS_SUCCESS_EXIT:
exit (0);
case NETSNMP_PARSE_ARGS_ERROR_USAGE:
usage ();
exit (1);
default:
break;
}
names = argc - arg;
if (names < non_repeaters)
{
fprintf (stderr, "snmpbulkget: need more objects than <nonrep>\n");
exit (1);
}
namep = name = (struct nameStruct *) calloc (names, sizeof (*name));
while (arg < argc)
{
namep->name_len = MAX_OID_LEN;
if (snmp_parse_oid (argv[arg], namep->name, &namep->name_len) == NULL)
{
snmp_perror (argv[arg]);
exit (1);
}
arg++;
namep++;
}
SOCK_STARTUP;
/*
* open an SNMP session
*/
ss = snmp_open (&session);
if (ss == NULL)
{
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror ("snmpbulkget", &session);
SOCK_CLEANUP;
exit (1);
}
/*
* create PDU for GETBULK request and add object name to request
*/
pdu = snmp_pdu_create (SNMP_MSG_GETBULK);
pdu->non_repeaters = non_repeaters;
pdu->max_repetitions = max_repetitions; /* fill the packet */
for (arg = 0; arg < names; arg++)
snmp_add_null_var (pdu, name[arg].name, name[arg].name_len);
/*
* do the request
*/
status = snmp_synch_response (ss, pdu, &response);
if (status == STAT_SUCCESS)
{
if (response->errstat == SNMP_ERR_NOERROR)
{
/*
* check resulting variables
*/
for (vars = response->variables; vars; vars = vars->next_variable)
print_variable (vars->name, vars->name_length, vars);
}
else
{
/*
* error in response, print it
*/
if (response->errstat == SNMP_ERR_NOSUCHNAME)
{
printf ("End of MIB.\n");
}
else
{
fprintf (stderr, "Error in packet.\nReason: %s\n", snmp_errstring (response->errstat));
if (response->errindex != 0)
{
fprintf (stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && (count != response->errindex); vars = vars->next_variable, count++)
/*EMPTY*/;
if (vars)
fprint_objid (stderr, vars->name, vars->name_length);
fprintf (stderr, "\n");
}
exitval = 2;
}
}
}
else if (status == STAT_TIMEOUT)
{
fprintf (stderr, "Timeout: No Response from %s\n", session.peername);
exitval = 1;
}
else
{ /* status == STAT_ERROR */
snmp_sess_perror ("snmpbulkget", ss);
exitval = 1;
}
if (response)
snmp_free_pdu (response);
snmp_close (ss);
SOCK_CLEANUP;
return exitval;
}
/** * Get snmp value to the structure my_oid_result array. * Author : lining 15810423651 [email protected] * @param peername : the remote host ip address. * @param oid_argvs : the oids pointer array. * @param my_oid_result oid_result : the return values. * @return 0 on success, or others on failure. * @return 1 on failure, the argument value error. * @return 2 on failure, snmp_open return error. * @return 3 on failure, snmp_parse_oid return error. * @return 4 on failure, snmp_synch_response return status time out. * @return 5 on failure, snmp_synch_response return status others. */ int my_snmp_get(const char *peername, const char *community, const char *oid_argv, my_oid_result *oid_result) { netsnmp_session session; netsnmp_session *sess_handle; netsnmp_pdu *pdu; netsnmp_pdu *response; netsnmp_variable_list *vars; oid oids[MAX_OID_LEN]; size_t oids_length; int status; int failures = 0; oids_length = 0; if (peername == NULL) { printf("[ERROR] my_snmp_get: the peername pointer is null\n"); return 1; } if (community == NULL) { printf("[ERROR] my_snmp_get: the community pointer is null\n"); return 1; } if (oid_argv == NULL) { printf("[ERROR] my_snmp_get: the oid_argv pointer is null\n"); return 1; } init_snmp("snmpget"); snmp_sess_init(&session); session.version = SNMP_VERSION_2c; session.community = (char*)community; session.community_len = strlen(session.community); session.peername = (char*)peername; session.timeout = 3000000; session.retries = 1; SOCK_STARTUP; sess_handle = snmp_open(&session); if (sess_handle == NULL) { SOCK_CLEANUP; printf("[ERROR] my_snmp_get: call snmp_open function failed, return sess_handle is null\n"); return 2; } pdu = snmp_pdu_create(SNMP_MSG_GET); oids_length = MAX_OID_LEN; if (!snmp_parse_oid(oid_argv, oids, &oids_length)) { snmp_perror(oid_argv); failures++; } else { snmp_add_null_var(pdu, oids, oids_length); } if (failures) { SOCK_CLEANUP; printf("[ERROR] my_snmp_get: call snmp_parse_oid function failed\n"); return 3; } status = snmp_synch_response(sess_handle, pdu, &response); if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) { for (vars = response->variables; vars; vars = vars->next_variable) { get_oid_value(vars, &oid_result); } } else if (status == STAT_TIMEOUT) { printf("[ERROR] my_snmp_get: call snmp_synch_response function failed, return status time out\n"); return 4; } else { printf("[ERROR] my_snmp_get: call snmp_synch_response function failed, return status others\n"); return 5; } if (response) { snmp_free_pdu(response); } snmp_close(sess_handle); SOCK_CLEANUP; return 0; }
/*! \fn char *snmp_getnext(host_t *current_host, char *snmp_oid)
* \brief performs a single snmp_getnext for a specific snmp OID
*
* This function will poll a specific snmp OID for a host. The host snmp
* session must already be established.
*
* \return returns the character representaton of the snmp OID, or "U" if
* unsuccessful.
*
*/
char *snmp_getnext(host_t *current_host, char *snmp_oid) {
struct snmp_pdu *pdu = NULL;
struct snmp_pdu *response = NULL;
struct variable_list *vars = NULL;
size_t anOID_len = MAX_OID_LEN;
oid anOID[MAX_OID_LEN];
int status;
char *result_string;
if (!(result_string = (char *) malloc(RESULTS_BUFFER))) {
die("ERROR: Fatal malloc error: snmp.c snmp_get!");
}
result_string[0] = '\0';
status = STAT_DESCRIP_ERROR;
if (current_host->snmp_session != NULL) {
anOID_len = MAX_OID_LEN;
pdu = snmp_pdu_create(SNMP_MSG_GETNEXT);
if (!snmp_parse_oid(snmp_oid, anOID, &anOID_len)) {
SPINE_LOG(("ERROR: Problems parsing SNMP OID\n"));
SET_UNDEFINED(result_string);
return result_string;
}else{
snmp_add_null_var(pdu, anOID, anOID_len);
}
/* poll host */
status = snmp_sess_synch_response(current_host->snmp_session, pdu, &response);
/* liftoff, successful poll, process it!! */
if (status == STAT_SUCCESS) {
if (response == NULL) {
SPINE_LOG(("ERROR: An internal Net-Snmp error condition detected in Cacti snmp_get\n"));
SET_UNDEFINED(result_string);
status = STAT_ERROR;
}else{
if (response->errstat == SNMP_ERR_NOERROR) {
vars = response->variables;
#ifdef USE_NET_SNMP
snprint_value(result_string, RESULTS_BUFFER, anOID, anOID_len, vars);
#else
sprint_value(result_string, anOID, anOID_len, vars);
#endif
}
}
}
if (response) {
snmp_free_pdu(response);
response = NULL;
}
}else{
status = STAT_DESCRIP_ERROR;
}
if (status != STAT_SUCCESS) {
current_host->ignore_host = TRUE;
SET_UNDEFINED(result_string);
}
return result_string;
}
/*! \fn char *snmp_get_multi(host_t *current_host, snmp_oids_t *snmp_oids, int num_oids)
* \brief performs multiple OID snmp_get's in a single network call
*
* This function will a group of snmp OID's for a host. The host snmp
* session must already be established. The function will modify elements of
* the snmp_oids array with the results from the snmp api call.
*
*/
void snmp_get_multi(host_t *current_host, snmp_oids_t *snmp_oids, int num_oids) {
struct snmp_pdu *pdu = NULL;
struct snmp_pdu *response = NULL;
struct variable_list *vars = NULL;
int status;
int i;
int max_repetitions = 1;
int non_repeaters = 0;
int array_count;
int index_count;
/* get rid of some compiler warnings */
errstat = 0;
errindex = 0;
struct nameStruct {
oid name[MAX_OID_LEN];
size_t name_len;
} *name, *namep;
/* load up oids */
namep = name = (struct nameStruct *) calloc(num_oids, sizeof(*name));
pdu = snmp_pdu_create(SNMP_MSG_GET);
for (i = 0; i < num_oids; i++) {
namep->name_len = MAX_OID_LEN;
if (!snmp_parse_oid(snmp_oids[i].oid, namep->name, &namep->name_len)) {
SPINE_LOG(("Host[%i] ERROR: Problems parsing Multi SNMP OID! (oid: %s)\n", current_host->id, snmp_oids[i].oid));
/* Mark this OID as "bad" */
SET_UNDEFINED(snmp_oids[i].result);
}else{
snmp_add_null_var(pdu, namep->name, namep->name_len);
}
namep++;
}
status = STAT_DESCRIP_ERROR;
/* execute the multi-get request */
retry:
status = snmp_sess_synch_response(current_host->snmp_session, pdu, &response);
/* liftoff, successful poll, process it!! */
if (status == STAT_SUCCESS) {
if (response == NULL) {
SPINE_LOG(("ERROR: An internal Net-Snmp error condition detected in Cacti snmp_get_multi\n"));
status = STAT_ERROR;
}else{
if (response->errstat == SNMP_ERR_NOERROR) {
vars = response->variables;
for(i = 0; i < num_oids && vars; i++) {
if (!IS_UNDEFINED(snmp_oids[i].result)) {
#ifdef USE_NET_SNMP
snmp_snprint_value(snmp_oids[i].result, RESULTS_BUFFER, vars->name, vars->name_length, vars);
#else
sprint_value(snmp_oids[i].result, vars->name, vars->name_length, vars);
#endif
vars = vars->next_variable;
}
}
}else{
if (response->errindex != 0) {
index_count = 1;
array_count = 0;
/* Find our index against errindex */
while (array_count < num_oids) {
if (IS_UNDEFINED(snmp_oids[array_count].result) ) {
array_count++;
}else{
/* if we have found our error, exit */
if (index_count == response->errindex) {
SET_UNDEFINED(snmp_oids[array_count].result);
break;
}
array_count++;
index_count++;
}
}
/* remote the invalid OID from the PDU */
pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
/* free the previous response */
snmp_free_pdu(response);
response = NULL;
if (pdu != NULL) {
/* retry the request */
goto retry;
}else{
/* all OID's errored out so exit cleanly */
status = STAT_SUCCESS;
}
}else{
status = STAT_DESCRIP_ERROR;
}
}
}
}
if (status != STAT_SUCCESS) {
current_host->ignore_host = 1;
for (i = 0; i < num_oids; i++) {
SET_UNDEFINED(snmp_oids[i].result);
}
}
if (response != NULL) {
snmp_free_pdu(response);
}
}
void
parse_expression(const char *token, char *line)
{
char buf[ SPRINT_MAX_LEN];
char ename[EXP_STR1_LEN+1];
oid name_buf[MAX_OID_LEN];
size_t name_len;
char *cp, *cp2;
struct expExpression *entry;
struct expObject *object;
netsnmp_session *sess = NULL;
int type=EXPVALTYPE_COUNTER;
int i=1;
DEBUGMSGTL(("disman:expr:conf", "Parsing expression config... "));
memset(buf, 0, sizeof(buf));
memset(ename, 0, sizeof(ename));
for (cp = copy_nword(line, buf, SPRINT_MAX_LEN);
;
cp = copy_nword(cp, buf, SPRINT_MAX_LEN)) {
if (buf[0] == '-' ) {
switch (buf[1]) {
case 't': /* type */
switch (buf[2]) {
case 'c': type = EXPVALTYPE_COUNTER; break;
case 'u': type = EXPVALTYPE_UNSIGNED; break;
case 't': type = EXPVALTYPE_TIMETICKS; break;
case 'i': type = EXPVALTYPE_INTEGER; break;
case 'a': type = EXPVALTYPE_IPADDRESS; break;
case 's': type = EXPVALTYPE_STRING; break;
case 'o': type = EXPVALTYPE_OID; break;
case 'C': type = EXPVALTYPE_COUNTER64; break;
}
break;
case 'u': /* user */
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
sess = netsnmp_iquery_user_session(buf);
break;
}
} else {
break;
}
}
memcpy(ename, buf, sizeof(ename));
/* cp = copy_nword(line, ename, sizeof(ename)); */
entry = expExpression_createEntry( "snmpd.conf", ename, 1 );
if (!entry)
return;
cp2 = entry->expExpression;
while (cp && *cp) {
/*
* Copy everything that can't possibly be a MIB
* object name into the expression field...
*/
/* XXX - TODO - Handle string literals */
if (!isalpha(*cp)) {
*cp2++ = *cp++;
continue;
}
/*
* ... and copy the defined functions across as well
* XXX - TODO
*/
/*
* Anything else is presumably a MIB object (or instance).
* Create an entry in the expObjectTable, and insert a
* corresponding parameter in the expression itself.
*/
name_len = MAX_OID_LEN;
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
snmp_parse_oid( buf, name_buf, &name_len );
object = expObject_createEntry( "snmpd.conf", ename, i, 1 );
memcpy( object->expObjectID, name_buf, name_len*sizeof(oid));
object->expObjectID_len = name_len;
object->flags |= EXP_OBJ_FLAG_VALID
| EXP_OBJ_FLAG_ACTIVE
| EXP_OBJ_FLAG_OWILD;
/*
* The first such object can also be used as the
* expExpressionPrefix
*/
if ( i == 1 ) {
memcpy( entry->expPrefix, name_buf, name_len*sizeof(oid));
entry->expPrefix_len = name_len;
object->flags |= EXP_OBJ_FLAG_PREFIX;
}
sprintf(cp2, "$%d", i++);
while (*cp2)
cp2++; /* Skip over this parameter */
}
if (sess)
entry->session = sess;
else
entry->session = netsnmp_query_get_default_session();
entry->expDeltaInterval = 10;
entry->expValueType = type;
entry->flags |= EXP_FLAG_VALID
| EXP_FLAG_ACTIVE;
expExpression_enable( entry );
DEBUGMSG(("disman:expr:conf", "(%s, %s)\n", ename,
entry->expExpression));
}
void
parse_setEvent( const char *token, char *line )
{
char ename[MTE_STR1_LEN+1];
char buf[SPRINT_MAX_LEN];
oid name_buf[MAX_OID_LEN];
size_t name_buf_len;
long value;
int wild = 1;
struct mteEvent *entry;
char *cp;
DEBUGMSGTL(("disman:event:conf", "Parsing setEvent config... "));
memset( ename, 0, sizeof(ename));
cp = copy_nword(line, ename, MTE_STR1_LEN);
if (!cp || ename[0] == '\0') {
config_perror("syntax error: no event name");
return;
}
if (cp && *cp=='-' && *(cp+1)=='I') {
wild = 0; /* an instance assignment */
cp = skip_token( cp );
}
/*
* Parse the SET assignment in the form "OID = value"
*/
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
if ( buf[0] == '\0' ) {
config_perror("syntax error: no set OID");
return;
}
name_buf_len = MAX_OID_LEN;
if (!snmp_parse_oid(buf, name_buf, &name_buf_len)) {
snmp_log(LOG_ERR, "setEvent OID: %s\n", buf);
config_perror("unknown set OID");
return;
}
if (cp && *cp == '=') {
cp = skip_token( cp ); /* skip the '=' assignment character */
}
value = strtol( cp, NULL, 0);
/*
* If the entry has parsed successfully, then create,
* populate and activate the new event entry.
*/
entry = _find_typed_mteEvent_entry("snmpd.conf", ename, MTE_EVENT_SET);
if (!entry) {
return;
}
memcpy( entry->mteSetOID, name_buf, name_buf_len*sizeof(oid));
entry->mteSetOID_len = name_buf_len;
entry->mteSetValue = value;
if (wild)
entry->flags |= MTE_SET_FLAG_OBJWILD;
entry->mteEventActions |= MTE_EVENT_SET;
entry->flags |= MTE_EVENT_FLAG_ENABLED |
MTE_EVENT_FLAG_ACTIVE |
MTE_EVENT_FLAG_FIXED |
MTE_EVENT_FLAG_VALID;
return;
}
void
parse_notificationEvent( const char *token, char *line )
{
char ename[MTE_STR1_LEN+1];
char buf[SPRINT_MAX_LEN];
oid name_buf[MAX_OID_LEN];
size_t name_buf_len;
struct mteEvent *entry;
struct mteObject *object;
int wild = 1;
int idx = 0;
char *cp;
#ifndef NETSNMP_DISABLE_MIB_LOADING
struct tree *tp;
#endif
struct varbind_list *var;
DEBUGMSGTL(("disman:event:conf", "Parsing notificationEvent config\n"));
/*
* The event name could be used directly to index the mteObjectsTable.
* But it's quite possible that the same name could also be used to
* set up a mteTriggerTable entry (with trigger-specific objects).
*
* To avoid such a clash, we'll add a prefix ("_E").
*/
memset(ename, 0, sizeof(ename));
ename[0] = '_';
ename[1] = 'E';
cp = copy_nword(line, ename+2, MTE_STR1_LEN-2);
if (!cp || ename[2] == '\0') {
config_perror("syntax error: no event name");
return;
}
/*
* Parse the notification OID field ...
*/
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
if ( buf[0] == '\0' ) {
config_perror("syntax error: no notification OID");
return;
}
name_buf_len = MAX_OID_LEN;
if (!snmp_parse_oid(buf, name_buf, &name_buf_len)) {
snmp_log(LOG_ERR, "notificationEvent OID: %s\n", buf);
config_perror("unknown notification OID");
return;
}
/*
* ... and the relevant object/instances.
*/
if ( cp && *cp=='-' && *(cp+1)=='m' ) {
#ifdef NETSNMP_DISABLE_MIB_LOADING
config_perror("Can't use -m if MIB loading is disabled");
return;
#else
/*
* Use the MIB definition to add the standard
* notification payload to the mteObjectsTable.
*/
cp = skip_token( cp );
tp = get_tree( name_buf, name_buf_len, get_tree_head());
if (!tp) {
config_perror("Can't locate notification payload info");
return;
}
for (var = tp->varbinds; var; var=var->next) {
idx++;
object = mteObjects_addOID( "snmpd.conf", ename, idx,
var->vblabel, wild );
idx = object->mteOIndex;
}
#endif
}
while (cp) {
if ( *cp == '-' ) {
switch (*(cp+1)) {
case 'm':
config_perror("-m option must come first");
return;
case 'i': /* exact instance */
case 'w': /* "not-wild" (backward compatability) */
wild = 0;
break;
case 'o': /* wildcarded object */
wild = 1;
break;
default:
config_perror("unrecognised option");
return;
}
cp = skip_token( cp );
if (!cp) {
config_perror("missing parameter");
return;
}
}
idx++;
cp = copy_nword(cp, buf, SPRINT_MAX_LEN);
object = mteObjects_addOID( "snmpd.conf", ename, idx, buf, wild );
idx = object->mteOIndex;
wild = 1; /* default to wildcarded objects */
}
/*
* If the entry has parsed successfully, then create,
* populate and activate the new event entry.
*/
entry = _find_typed_mteEvent_entry("snmpd.conf", ename+2,
MTE_EVENT_NOTIFICATION);
if (!entry) {
mteObjects_removeEntries( "snmpd.conf", ename );
return;
}
entry->mteNotification_len = name_buf_len;
memcpy( entry->mteNotification, name_buf, name_buf_len*sizeof(oid));
memcpy( entry->mteNotifyOwner, "snmpd.conf", 10 );
memcpy( entry->mteNotifyObjects, ename, MTE_STR1_LEN );
entry->mteEventActions |= MTE_EVENT_NOTIFICATION;
entry->flags |= MTE_EVENT_FLAG_ENABLED |
MTE_EVENT_FLAG_ACTIVE |
MTE_EVENT_FLAG_FIXED |
MTE_EVENT_FLAG_VALID;
return;
}
int main (int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu, *response;
oid name[MAX_OID_LEN];
size_t name_length;
int arg;
int status;
char *trap = NULL;
char *prognam;
int exitval = 0;
#ifndef NETSNMP_DISABLE_SNMPV1
char *specific = NULL, *description = NULL, *agent = NULL;
in_addr_t *pdu_in_addr_t;
#endif
prognam = strrchr (argv[0], '/');
if (prognam)
prognam++;
else
prognam = argv[0];
putenv (strdup ("POSIXLY_CORRECT=1"));
if (strcmp (prognam, "snmpinform") == 0)
inform = 1;
switch (arg = snmp_parse_args (argc, argv, &session, "C:", optProc))
{
case NETSNMP_PARSE_ARGS_ERROR:
exit (1);
case NETSNMP_PARSE_ARGS_SUCCESS_EXIT:
exit (0);
case NETSNMP_PARSE_ARGS_ERROR_USAGE:
usage ();
exit (1);
default:
break;
}
SOCK_STARTUP;
session.callback = snmp_input;
session.callback_magic = NULL;
/*
* setup the local engineID which may be for either or both of the
* contextEngineID and/or the securityEngineID.
*/
setup_engineID (NULL, NULL);
/* if we don't have a contextEngineID set via command line
arguments, use our internal engineID as the context. */
if (session.contextEngineIDLen == 0 || session.contextEngineID == NULL)
{
session.contextEngineID = snmpv3_generate_engineID (&session.contextEngineIDLen);
}
if (session.version == SNMP_VERSION_3 && !inform)
{
/*
* for traps, we use ourselves as the authoritative engine
* which is really stupid since command line apps don't have a
* notion of a persistent engine. Hence, our boots and time
* values are probably always really wacked with respect to what
* a manager would like to see.
*
* The following should be enough to:
*
* 1) prevent the library from doing discovery for engineid & time.
* 2) use our engineid instead of the remote engineid for
* authoritative & privacy related operations.
* 3) The remote engine must be configured with users for our engineID.
*
* -- Wes
*/
/*
* pick our own engineID
*/
if (session.securityEngineIDLen == 0 || session.securityEngineID == NULL)
{
session.securityEngineID = snmpv3_generate_engineID (&session.securityEngineIDLen);
}
/*
* set boots and time, which will cause problems if this
* machine ever reboots and a remote trap receiver has cached our
* boots and time... I'll cause a not-in-time-window report to
* be sent back to this machine.
*/
if (session.engineBoots == 0)
session.engineBoots = 1;
if (session.engineTime == 0) /* not really correct, */
session.engineTime = get_uptime (); /* but it'll work. Sort of. */
}
ss = snmp_add (&session, netsnmp_transport_open_client ("snmptrap", session.peername), NULL, NULL);
if (ss == NULL)
{
/*
* diagnose netsnmp_transport_open_client and snmp_add errors with
* the input netsnmp_session pointer
*/
snmp_sess_perror ("snmptrap", &session);
SOCK_CLEANUP;
exit (1);
}
#ifndef NETSNMP_DISABLE_SNMPV1
if (session.version == SNMP_VERSION_1)
{
if (inform)
{
fprintf (stderr, "Cannot send INFORM as SNMPv1 PDU\n");
SOCK_CLEANUP;
exit (1);
}
pdu = snmp_pdu_create (SNMP_MSG_TRAP);
if (!pdu)
{
fprintf (stderr, "Failed to create trap PDU\n");
SOCK_CLEANUP;
exit (1);
}
pdu_in_addr_t = (in_addr_t *) pdu->agent_addr;
if (arg == argc)
{
fprintf (stderr, "No enterprise oid\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
if (argv[arg][0] == 0)
{
pdu->enterprise = (oid *) malloc (sizeof (objid_enterprise));
memcpy (pdu->enterprise, objid_enterprise, sizeof (objid_enterprise));
pdu->enterprise_length = sizeof (objid_enterprise) / sizeof (oid);
}
else
{
name_length = MAX_OID_LEN;
if (!snmp_parse_oid (argv[arg], name, &name_length))
{
snmp_perror (argv[arg]);
usage ();
SOCK_CLEANUP;
exit (1);
}
pdu->enterprise = (oid *) malloc (name_length * sizeof (oid));
memcpy (pdu->enterprise, name, name_length * sizeof (oid));
pdu->enterprise_length = name_length;
}
if (++arg >= argc)
{
fprintf (stderr, "Missing agent parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
agent = argv[arg];
if (agent != NULL && strlen (agent) != 0)
{
int ret = netsnmp_gethostbyname_v4 (agent, pdu_in_addr_t);
if (ret < 0)
{
fprintf (stderr, "unknown host: %s\n", agent);
exit (1);
}
}
else
{
*pdu_in_addr_t = get_myaddr ();
}
if (++arg == argc)
{
fprintf (stderr, "Missing generic-trap parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
trap = argv[arg];
pdu->trap_type = atoi (trap);
if (++arg == argc)
{
fprintf (stderr, "Missing specific-trap parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
specific = argv[arg];
pdu->specific_type = atoi (specific);
if (++arg == argc)
{
fprintf (stderr, "Missing uptime parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
description = argv[arg];
if (description == NULL || *description == 0)
pdu->time = get_uptime ();
else
pdu->time = atol (description);
}
else
#endif
{
long sysuptime;
char csysuptime[20];
pdu = snmp_pdu_create (inform ? SNMP_MSG_INFORM : SNMP_MSG_TRAP2);
if (!pdu)
{
fprintf (stderr, "Failed to create notification PDU\n");
SOCK_CLEANUP;
exit (1);
}
if (arg == argc)
{
fprintf (stderr, "Missing up-time parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
trap = argv[arg];
if (*trap == 0)
{
sysuptime = get_uptime ();
sprintf (csysuptime, "%ld", sysuptime);
trap = csysuptime;
}
snmp_add_var (pdu, objid_sysuptime, sizeof (objid_sysuptime) / sizeof (oid), 't', trap);
if (++arg == argc)
{
fprintf (stderr, "Missing trap-oid parameter\n");
usage ();
SOCK_CLEANUP;
exit (1);
}
if (snmp_add_var (pdu, objid_snmptrap, sizeof (objid_snmptrap) / sizeof (oid), 'o', argv[arg]) != 0)
{
snmp_perror (argv[arg]);
SOCK_CLEANUP;
exit (1);
}
}
arg++;
while (arg < argc)
{
arg += 3;
if (arg > argc)
{
fprintf (stderr, "%s: Missing type/value for variable\n", argv[arg - 3]);
SOCK_CLEANUP;
exit (1);
}
name_length = MAX_OID_LEN;
if (!snmp_parse_oid (argv[arg - 3], name, &name_length))
{
snmp_perror (argv[arg - 3]);
SOCK_CLEANUP;
exit (1);
}
if (snmp_add_var (pdu, name, name_length, argv[arg - 2][0], argv[arg - 1]) != 0)
{
snmp_perror (argv[arg - 3]);
SOCK_CLEANUP;
exit (1);
}
}
if (inform)
status = snmp_synch_response (ss, pdu, &response);
else
status = snmp_send (ss, pdu) == 0;
if (status)
{
snmp_sess_perror (inform ? "snmpinform" : "snmptrap", ss);
if (!inform)
snmp_free_pdu (pdu);
exitval = 1;
}
else if (inform)
snmp_free_pdu (response);
snmp_close (ss);
snmp_shutdown ("snmpapp");
SOCK_CLEANUP;
return exitval;
}
static rsRetVal omsnmp_sendsnmp(wrkrInstanceData_t *pWrkrData, uchar *psz)
{
DEFiRet;
netsnmp_pdu *pdu = NULL;
oid enterpriseoid[MAX_OID_LEN];
size_t enterpriseoidlen = MAX_OID_LEN;
oid oidSyslogMessage[MAX_OID_LEN];
size_t oLen = MAX_OID_LEN;
int status;
char *trap = NULL;
const char *strErr = NULL;
instanceData *pData;
pData = pWrkrData->pData;
/* Init SNMP Session if necessary */
if (pWrkrData->snmpsession == NULL) {
CHKiRet(omsnmp_initSession(pWrkrData));
}
/* String should not be NULL */
ASSERT(psz != NULL);
dbgprintf( "omsnmp_sendsnmp: ENTER - Syslogmessage = '%s'\n", (char*)psz);
/* If SNMP Version1 is configured !*/
if(pWrkrData->snmpsession->version == SNMP_VERSION_1) {
pdu = snmp_pdu_create(SNMP_MSG_TRAP);
/* Set enterprise */
if(!snmp_parse_oid(pData->szEnterpriseOID == NULL ? "1.3.6.1.4.1.3.1.1" : (char*)pData->szEnterpriseOID,
enterpriseoid, &enterpriseoidlen )) {
strErr = snmp_api_errstring(snmp_errno);
errmsg.LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Parsing EnterpriseOID "
"failed '%s' with error '%s' \n", pData->szSyslogMessageOID, strErr);
ABORT_FINALIZE(RS_RET_DISABLE_ACTION);
}
pdu->enterprise = (oid *) MALLOC(enterpriseoidlen * sizeof(oid));
memcpy(pdu->enterprise, enterpriseoid, enterpriseoidlen * sizeof(oid));
pdu->enterprise_length = enterpriseoidlen;
/* Set Traptype */
pdu->trap_type = pData->iTrapType;
/* Set SpecificType */
pdu->specific_type = pData->iSpecificType;
/* Set Updtime */
pdu->time = get_uptime();
}
/* If SNMP Version2c is configured !*/
else if (pWrkrData->snmpsession->version == SNMP_VERSION_2c)
{
long sysuptime;
char csysuptime[20];
/* Create PDU */
pdu = snmp_pdu_create(SNMP_MSG_TRAP2);
/* Set uptime */
sysuptime = get_uptime();
snprintf( csysuptime, sizeof(csysuptime) , "%ld", sysuptime);
trap = csysuptime;
snmp_add_var(pdu, objid_sysuptime, sizeof(objid_sysuptime) / sizeof(oid), 't', trap);
/* Now set the SyslogMessage Trap OID */
if ( snmp_add_var(pdu, objid_snmptrap, sizeof(objid_snmptrap) / sizeof(oid), 'o',
pData->szSnmpTrapOID == NULL ? "1.3.6.1.4.1.19406.1.2.1" : (char*) pData->szSnmpTrapOID
) != 0) {
strErr = snmp_api_errstring(snmp_errno);
errmsg.LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Adding trap OID failed '%s' with error '%s' \n", pData->szSnmpTrapOID, strErr);
ABORT_FINALIZE(RS_RET_DISABLE_ACTION);
}
}
/* SET TRAP PARAMETER for SyslogMessage! */
/* dbgprintf( "omsnmp_sendsnmp: SyslogMessage '%s'\n", psz );*/
/* First create new OID object */
if (snmp_parse_oid(pData->szSyslogMessageOID == NULL ?
"1.3.6.1.4.1.19406.1.1.2.1" : (char*)pData->szSyslogMessageOID,
oidSyslogMessage, &oLen)) {
int iErrCode = snmp_add_var(pdu, oidSyslogMessage, oLen, 's', (char*) psz);
if (iErrCode) {
const char *str = snmp_api_errstring(iErrCode);
errmsg.LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Invalid SyslogMessage OID, error code '%d' - '%s'\n", iErrCode, str );
ABORT_FINALIZE(RS_RET_DISABLE_ACTION);
}
} else {
strErr = snmp_api_errstring(snmp_errno);
errmsg.LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Parsing SyslogMessageOID failed '%s' with error '%s' \n", pData->szSyslogMessageOID, strErr);
ABORT_FINALIZE(RS_RET_DISABLE_ACTION);
}
/* Send the TRAP */
status = snmp_send(pWrkrData->snmpsession, pdu) == 0;
if (status)
{
/* Debug Output! */
int iErrorCode = pWrkrData->snmpsession->s_snmp_errno;
errmsg.LogError(0, RS_RET_SUSPENDED, "omsnmp_sendsnmp: snmp_send failed error '%d', Description='%s'\n", iErrorCode*(-1), api_errors[iErrorCode*(-1)]);
/* Clear Session */
omsnmp_exitSession(pWrkrData);
ABORT_FINALIZE(RS_RET_SUSPENDED);
}
finalize_it:
if(iRet != RS_RET_OK) {
if(pdu != NULL) {
snmp_free_pdu(pdu);
}
}
dbgprintf( "omsnmp_sendsnmp: LEAVE\n");
RETiRet;
}
int
main(int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu, *response = NULL;
netsnmp_variable_list *vars;
int arg;
int count;
int current_name = 0;
int current_type = 0;
int current_value = 0;
char *names[SNMP_MAX_CMDLINE_OIDS];
char types[SNMP_MAX_CMDLINE_OIDS];
char *values[SNMP_MAX_CMDLINE_OIDS];
oid name[MAX_OID_LEN];
size_t name_length;
int status;
int exitval = 0;
putenv(strdup("POSIXLY_CORRECT=1"));
/*
* get the common command line arguments
*/
switch (arg = snmp_parse_args(argc, argv, &session, "C:", optProc)) {
case -2:
exit(0);
case -1:
usage();
exit(1);
default:
break;
}
if (arg >= argc) {
fprintf(stderr, "Missing object name\n");
usage();
exit(1);
}
if ((argc - arg) > 3*SNMP_MAX_CMDLINE_OIDS) {
fprintf(stderr, "Too many assignments specified. ");
fprintf(stderr, "Only %d allowed in one request.\n", SNMP_MAX_CMDLINE_OIDS);
usage();
exit(1);
}
/*
* get object names, types, and values
*/
for (; arg < argc; arg++) {
DEBUGMSGTL(("snmp_parse_args", "handling (#%d): %s %s %s\n",
arg,argv[arg], arg+1 < argc ? argv[arg+1] : NULL,
arg+2 < argc ? argv[arg+2] : NULL));
names[current_name++] = argv[arg++];
if (arg < argc) {
switch (*argv[arg]) {
case '=':
case 'i':
case 'u':
case 't':
case 'a':
case 'o':
case 's':
case 'x':
case 'd':
case 'b':
#ifdef OPAQUE_SPECIAL_TYPES
case 'I':
case 'U':
case 'F':
case 'D':
#endif /* OPAQUE_SPECIAL_TYPES */
types[current_type++] = *argv[arg++];
break;
default:
fprintf(stderr, "%s: Bad object type: %c\n", argv[arg - 1],
*argv[arg]);
exit(1);
}
} else {
fprintf(stderr, "%s: Needs type and value\n", argv[arg - 1]);
exit(1);
}
if (arg < argc)
values[current_value++] = argv[arg];
else {
fprintf(stderr, "%s: Needs value\n", argv[arg - 2]);
exit(1);
}
}
SOCK_STARTUP;
/*
* open an SNMP session
*/
ss = snmp_open(&session);
if (ss == NULL) {
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror("snmpset", &session);
SOCK_CLEANUP;
exit(1);
}
/*
* create PDU for SET request and add object names and values to request
*/
pdu = snmp_pdu_create(SNMP_MSG_SET);
for (count = 0; count < current_name; count++) {
name_length = MAX_OID_LEN;
if (snmp_parse_oid(names[count], name, &name_length) == NULL) {
snmp_perror(names[count]);
failures++;
} else
if (snmp_add_var
(pdu, name, name_length, types[count], values[count])) {
snmp_perror(names[count]);
failures++;
}
}
if (failures) {
SOCK_CLEANUP;
exit(1);
}
/*
* do the request
*/
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS) {
if (response->errstat == SNMP_ERR_NOERROR) {
if (!quiet) {
for (vars = response->variables; vars;
vars = vars->next_variable)
print_variable(vars->name, vars->name_length, vars);
}
} else {
fprintf(stderr, "Error in packet.\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errindex != 0) {
fprintf(stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && (count != response->errindex);
vars = vars->next_variable, count++);
if (vars)
fprint_objid(stderr, vars->name, vars->name_length);
fprintf(stderr, "\n");
}
exitval = 2;
}
} else if (status == STAT_TIMEOUT) {
fprintf(stderr, "Timeout: No Response from %s\n",
session.peername);
exitval = 1;
} else { /* status == STAT_ERROR */
snmp_sess_perror("snmpset", ss);
exitval = 1;
}
if (response)
snmp_free_pdu(response);
snmp_close(ss);
SOCK_CLEANUP;
return exitval;
}
static void
load_plugin_config(gchar *config_line)
{
Reader *reader, *nreader = NULL;
gchar proto[CFG_BUFSIZE], bufl[CFG_BUFSIZE];
gchar bufc[CFG_BUFSIZE], bufp[CFG_BUFSIZE];
gchar bufo[CFG_BUFSIZE], bufu[CFG_BUFSIZE];
gchar buft[CFG_BUFSIZE], peer[CFG_BUFSIZE];
gint n;
if (sscanf(config_line, GKRELLM_CHARTCONFIG_KEYWORD " %s %[^\n]", bufl, bufc) == 2) {
g_strdelimit(bufl, "_", ' ');
/* look for any such reader */
for (reader = readers; reader ; reader = reader->next) {
if (!strcmp(reader->label, bufl)) {
nreader = reader;
break;
}
}
/* look for unconf'd reader */
for (reader = readers; reader ; reader = reader->next) {
if (!strcmp(reader->label, bufl) && !reader->chart_config) {
nreader = reader;
break;
}
}
if (!nreader) {/* well... */
fprintf(stderr, "chart_config appeared before chart, this isn't handled\n%s\n", config_line);
return;
}
//"chart_config in "
gkrellm_load_chartconfig(&nreader->chart_config, bufc, /*max_cd*/1);
return;
}
reader = g_new0(Reader, 1);
n = sscanf(config_line, "%s %[^:]://%[^@]@%[^:]:%[^:]:%d/%s %s %d %d %d %d",
bufl, proto, bufc, buft, bufp, &reader->port, bufo, bufu,
&reader->delay, &reader->delta,
&reader->divisor, &reader->scale);
if (n >= 6) {
g_snprintf(peer, CFG_BUFSIZE, "%s:%s", buft, bufp);
peer[CFG_BUFSIZE-1] = '\0';
} else
n = sscanf(config_line, "%s %[^:]://%[^@]@%[^:]:%d/%s %s %d %d %d %d",
bufl, proto, bufc, peer, &reader->port, bufo, bufu,
&reader->delay, &reader->delta,
&reader->divisor, &reader->scale);
if (n >= 7)
{
if (g_strcasecmp(proto, "snmp") == 0) {
gkrellm_dup_string(&reader->label, bufl);
gkrellm_dup_string(&reader->community, bufc);
gkrellm_dup_string(&reader->peer, peer);
if (reader->delay < 10)
reader->delay = 100;
if (reader->divisor == 0)
reader->divisor = 1;
gkrellm_dup_string(&reader->oid_str, bufo);
reader->objid_length = MAX_OID_LEN;
if (!snmp_parse_oid(reader->oid_str,
reader->objid, &reader->objid_length)) {
//FIXME:
printf("error parsing oid: %s\n", reader->oid_str);
}
if (n > 7) {
gkrellm_dup_string(&reader->unit, bufu);
} else {
gkrellm_dup_string(&reader->unit, "");
}
g_strdelimit(reader->label, "_", ' ');
g_strdelimit(reader->unit, "_", ' ');
// reader->old_sample = "SNMP"; // be nice.
}
if (!readers)
readers = reader;
else {
for (nreader = readers; nreader->next ; nreader = nreader->next);
nreader->next = reader;
}
}
}
void
parse_notificationEvent(const char *token, char *line) {
char name_buf[64];
char oid_name_buf[SPRINT_MAX_LEN];
oid oid_buf[MAX_OID_LEN];
size_t oid_buf_len = MAX_OID_LEN;
int wild = 1;
netsnmp_table_row *row;
long tlong;
char tc;
/* get the owner */
const char *owner = "snmpd.conf";
/* get the name */
char *cp = copy_nword(line, name_buf, SPRINT_MAX_LEN);
if (!cp || name_buf[0] == '\0') {
config_perror("syntax error.");
return;
}
for(row = table_set->table->first_row; row; row = row->next) {
if (strcmp(row->indexes->val.string, owner) == 0 &&
strcmp(row->indexes->next_variable->val.string,
name_buf) == 0) {
config_perror("An eventd by that name has already been defined.");
return;
}
}
/* now, get all the trap oid */
cp = copy_nword(cp, oid_name_buf, SPRINT_MAX_LEN);
if (oid_name_buf[0] == '\0') {
config_perror("syntax error.");
return;
}
if (!snmp_parse_oid(oid_name_buf, oid_buf, &oid_buf_len)) {
snmp_log(LOG_ERR,"namebuf: %s\n",oid_name_buf);
config_perror("unable to parse trap oid");
return;
}
/*
* add to the mteEventNotificationtable to point to the
* notification and the objects.
*/
row = netsnmp_create_table_data_row();
/* indexes */
netsnmp_table_row_add_index(row, ASN_OCTET_STR, owner, strlen(owner));
netsnmp_table_row_add_index(row, ASN_PRIV_IMPLIED_OCTET_STR,
name_buf, strlen(name_buf));
/* columns */
netsnmp_set_row_column(row, COLUMN_MTEEVENTNOTIFICATION, ASN_OBJECT_ID,
(char *) oid_buf, oid_buf_len * sizeof(oid));
netsnmp_set_row_column(row, COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER,
ASN_OCTET_STR, owner, strlen(owner));
netsnmp_set_row_column(row, COLUMN_MTEEVENTNOTIFICATIONOBJECTS,
ASN_OCTET_STR, name_buf, strlen(name_buf));
netsnmp_table_data_add_row(mteEventNotif_table_set->table, row);
/*
* add to the mteEventTable to make it a notification to trigger
* notification and the objects.
*/
row = netsnmp_create_table_data_row();
/* indexes */
netsnmp_table_row_add_index(row, ASN_OCTET_STR, owner, strlen(owner));
netsnmp_table_row_add_index(row, ASN_PRIV_IMPLIED_OCTET_STR,
name_buf, strlen(name_buf));
/* columns */
tc = (u_char)0x80;
netsnmp_set_row_column(row, COLUMN_MTEEVENTACTIONS, ASN_OCTET_STR,
&tc, 1);
tlong = MTETRIGGERENABLED_TRUE;
netsnmp_set_row_column(row, COLUMN_MTEEVENTENABLED,
ASN_INTEGER, (char *) &tlong, sizeof(tlong));
tlong = RS_ACTIVE;
netsnmp_set_row_column(row, COLUMN_MTEEVENTENTRYSTATUS,
ASN_INTEGER, (char *) &tlong, sizeof(tlong));
netsnmp_table_data_add_row(table_set->table, row);
/*
* now all the objects to put into the trap's object row
*/
while(cp) {
cp = copy_nword(cp, oid_name_buf, SPRINT_MAX_LEN);
if (strcmp(oid_name_buf, "-w") == 0) {
wild = 0;
continue;
}
oid_buf_len = MAX_OID_LEN;
if (!snmp_parse_oid(oid_name_buf, oid_buf, &oid_buf_len)) {
config_perror("unable to parse an object oid");
return;
}
mte_add_object_to_table("snmpd.conf", name_buf,
oid_buf, oid_buf_len, wild);
wild = 1;
}
}
gchar *
snmp_probe(gchar *peer, gint port, gchar *community)
{
oid sysDescr[MAX_OID_LEN];
size_t sysDescr_length;
oid sysObjectID[MAX_OID_LEN];
size_t sysObjectID_length;
oid sysUpTime[MAX_OID_LEN];
size_t sysUpTime_length;
oid sysContact[MAX_OID_LEN];
size_t sysContact_length;
oid sysName[MAX_OID_LEN];
size_t sysName_length;
oid sysLocation[MAX_OID_LEN];
size_t sysLocation_length;
struct snmp_session session, *ss;
struct snmp_pdu *pdu, *response;
struct variable_list *vars;
int count;
int status;
char textbuf[1024];
char *result = NULL;
char *tmp = NULL;
/* transform interesting OIDs */
sysDescr_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysDescr.0", sysDescr, &sysDescr_length))
printf("error parsing oid: system.sysDescr.0\n");
sysObjectID_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysObjectID.0", sysObjectID, &sysObjectID_length))
printf("error parsing oid: system.sysObjectID.0\n");
sysUpTime_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysUpTime.0", sysUpTime, &sysUpTime_length))
printf("error parsing oid: system.sysUpTime.0\n");
sysContact_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysContact.0", sysContact, &sysContact_length))
printf("error parsing oid: system.sysContact.0\n");
sysName_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysName.0", sysName, &sysName_length))
printf("error parsing oid: system.sysName.0\n");
sysLocation_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysLocation.0", sysLocation, &sysLocation_length))
printf("error parsing oid: system.sysLocation.0\n");
/* initialize session to default values */
snmp_sess_init( &session );
session.version = SNMP_VERSION_1;
session.community = community;
session.community_len = strlen(community);
session.peername = peer;
#ifdef STREAM
session.flags |= SNMP_FLAGS_STREAM_SOCKET;
fprintf (stderr, "local port set to: %d\n", session.local_port);
#endif
/*
* Open an SNMP session.
*/
ss = snmp_open(&session);
if (ss == NULL){
fprintf (stderr, "local port set to: %d\n", session.local_port);
snmp_sess_perror("snmp_open", &session);
exit(1);
}
/*
* Create PDU for GET request and add object names to request.
*/
pdu = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(pdu, sysDescr, sysDescr_length);
snmp_add_null_var(pdu, sysObjectID, sysObjectID_length);
snmp_add_null_var(pdu, sysUpTime, sysUpTime_length);
snmp_add_null_var(pdu, sysContact, sysContact_length);
snmp_add_null_var(pdu, sysName, sysName_length);
snmp_add_null_var(pdu, sysLocation, sysLocation_length);
/*
* Perform the request.
*
* If the Get Request fails, note the OID that caused the error,
* "fix" the PDU (removing the error-prone OID) and retry.
*/
retry:
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS){
if (response->errstat == SNMP_ERR_NOERROR){
/* just render all vars */
for(vars = response->variables; vars; vars = vars->next_variable) {
snprint_variable(textbuf, 1023, vars->name, vars->name_length, vars);
textbuf[1023] = '\0';
if (result) {
tmp = result;
result = g_strdup_printf("%s\n%s\n", tmp, textbuf);
g_free(tmp);
} else {
result = g_strdup_printf("%s\n", textbuf);
}
}
} else {
fprintf(stderr, "Error in packet\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errstat == SNMP_ERR_NOSUCHNAME){
fprintf(stderr, "This name doesn't exist: ");
for(count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++)
/*EMPTY*/ ;
if (vars)
fprint_objid(stderr, vars->name, vars->name_length);
fprintf(stderr, "\n");
}
/* retry if the errored variable was successfully removed */
pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
snmp_free_pdu(response);
response = NULL;
if (pdu != NULL)
goto retry;
} /* endif -- SNMP_ERR_NOERROR */
} else if (status == STAT_TIMEOUT){
snmp_close(ss);
return g_strdup_printf("Timeout: No Response from %s.\n", session.peername);
} else { /* status == STAT_ERROR */
fprintf (stderr, "local port set to: %d\n", session.local_port);
snmp_sess_perror("STAT_ERROR", ss);
snmp_close(ss);
return NULL;
} /* endif -- STAT_SUCCESS */
if (response)
snmp_free_pdu(response);
snmp_close(ss);
return result;
}
/*int get_value_snmp(double *result,char *result_str,DB_ITEM *item,char *error, int max_error_len)*/
int get_value_snmp(DB_ITEM *item, AGENT_RESULT *value)
{
#define NEW_APPROACH
struct snmp_session session, *ss;
struct snmp_pdu *pdu;
struct snmp_pdu *response;
#ifdef NEW_APPROACH
char temp[MAX_STRING_LEN];
#endif
oid anOID[MAX_OID_LEN];
size_t anOID_len = MAX_OID_LEN;
struct variable_list *vars;
int status;
char *p, *c;
double dbl;
unsigned char *ip;
char error[MAX_STRING_LEN];
int ret=SUCCEED;
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP()");
init_result(value);
/* assert((item->type == ITEM_TYPE_SNMPv1)||(item->type == ITEM_TYPE_SNMPv2c)); */
assert((item->type == ITEM_TYPE_SNMPv1)||(item->type == ITEM_TYPE_SNMPv2c)||(item->type == ITEM_TYPE_SNMPv3));
snmp_sess_init( &session );
/* session.version = version;*/
if(item->type == ITEM_TYPE_SNMPv1)
{
session.version = SNMP_VERSION_1;
}
else if(item->type == ITEM_TYPE_SNMPv2c)
{
session.version = SNMP_VERSION_2c;
}
else if(item->type == ITEM_TYPE_SNMPv3)
{
session.version = SNMP_VERSION_3;
}
else
{
zbx_snprintf(error,sizeof(error),"Error in get_value_SNMP. Wrong item type [%d]. Must be SNMP.",
item->type);
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
if(item->useip == 1)
{
#ifdef NEW_APPROACH
zbx_snprintf(temp,sizeof(temp),"%s:%d",
item->host_ip,
item->snmp_port);
session.peername = temp;
session.remote_port = item->snmp_port;
#else
session.peername = item->host_ip;
session.remote_port = item->snmp_port;
#endif
}
else
{
#ifdef NEW_APPROACH
zbx_snprintf(temp, sizeof(temp), "%s:%d",
item->host_dns,
item->snmp_port);
session.peername = temp;
session.remote_port = item->snmp_port;
#else
session.peername = item->host_dns;
session.remote_port = item->snmp_port;
#endif
}
if( (session.version == SNMP_VERSION_1) || (item->type == ITEM_TYPE_SNMPv2c))
{
session.community = (u_char *)item->snmp_community;
session.community_len = strlen((void *)session.community);
zabbix_log( LOG_LEVEL_DEBUG, "SNMP [%s@%s:%d]",
session.community,
session.peername,
session.remote_port);
}
else if(session.version == SNMP_VERSION_3)
{
/* set the SNMPv3 user name */
session.securityName = item->snmpv3_securityname;
session.securityNameLen = strlen(session.securityName);
/* set the security level to authenticated, but not encrypted */
if(item->snmpv3_securitylevel == ITEM_SNMPV3_SECURITYLEVEL_NOAUTHNOPRIV)
{
session.securityLevel = SNMP_SEC_LEVEL_NOAUTH;
}
else if(item->snmpv3_securitylevel == ITEM_SNMPV3_SECURITYLEVEL_AUTHNOPRIV)
{
session.securityLevel = SNMP_SEC_LEVEL_AUTHNOPRIV;
/* set the authentication method to MD5 */
session.securityAuthProto = usmHMACMD5AuthProtocol;
session.securityAuthProtoLen = USM_AUTH_PROTO_MD5_LEN;
session.securityAuthKeyLen = USM_AUTH_KU_LEN;
if (generate_Ku(session.securityAuthProto,
session.securityAuthProtoLen,
(u_char *) item->snmpv3_authpassphrase, strlen(item->snmpv3_authpassphrase),
session.securityAuthKey,
&session.securityAuthKeyLen) != SNMPERR_SUCCESS)
{
zbx_snprintf(error,sizeof(error),"Error generating Ku from authentication pass phrase.");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
}
else if(item->snmpv3_securitylevel == ITEM_SNMPV3_SECURITYLEVEL_AUTHPRIV)
{
session.securityLevel = SNMP_SEC_LEVEL_AUTHPRIV;
/* set the authentication method to MD5 */
session.securityAuthProto = usmHMACMD5AuthProtocol;
session.securityAuthProtoLen = USM_AUTH_PROTO_MD5_LEN;
session.securityAuthKeyLen = USM_AUTH_KU_LEN;
if (generate_Ku(session.securityAuthProto,
session.securityAuthProtoLen,
(u_char *) item->snmpv3_authpassphrase, strlen(item->snmpv3_authpassphrase),
session.securityAuthKey,
&session.securityAuthKeyLen) != SNMPERR_SUCCESS)
{
zbx_snprintf(error,sizeof(error),"Error generating Ku from authentication pass phrase.");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
/* set the private method to DES */
session.securityPrivProto = usmDESPrivProtocol;
session.securityPrivProtoLen = USM_PRIV_PROTO_DES_LEN;
session.securityPrivKeyLen = USM_PRIV_KU_LEN;
if (generate_Ku(session.securityAuthProto,
session.securityAuthProtoLen,
(u_char *) item->snmpv3_privpassphrase, strlen(item->snmpv3_privpassphrase),
session.securityPrivKey,
&session.securityPrivKeyLen) != SNMPERR_SUCCESS)
{
zbx_snprintf(error,sizeof(error),"Error generating Ku from priv pass phrase.");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
}
zabbix_log( LOG_LEVEL_DEBUG, "SNMPv3 [%s@%s:%d]",
session.securityName,
session.peername,
session.remote_port);
}
else
{
zbx_snprintf(error,sizeof(error),"Error in get_value_SNMP. Unsupported session.version [%d]",
(int)session.version);
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
zabbix_log( LOG_LEVEL_DEBUG, "OID [%s]",
item->snmp_oid);
SOCK_STARTUP;
ss = snmp_open(&session);
if(ss == NULL)
{
SOCK_CLEANUP;
zbx_snprintf(error,sizeof(error),"Error doing snmp_open()");
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
return NOTSUPPORTED;
}
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP() 0.2");
pdu = snmp_pdu_create(SNMP_MSG_GET);
/* Changed to snmp_parse_oid */
/* read_objid(item->snmp_oid, anOID, &anOID_len);*/
snmp_parse_oid(item->snmp_oid, anOID, &anOID_len);
#if OTHER_METHODS
get_node("sysDescr.0", anOID, &anOID_len);
read_objid(".1.3.6.1.2.1.1.1.0", anOID, &anOID_len);
read_objid("system.sysDescr.0", anOID, &anOID_len);
#endif
snmp_add_null_var(pdu, anOID, anOID_len);
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP() 0.3");
status = snmp_synch_response(ss, pdu, &response);
zabbix_log( LOG_LEVEL_DEBUG, "Status send [%d]", status);
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP() 0.4");
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP() 1");
if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR)
{
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_SNMP() 2");
/* for(vars = response->variables; vars; vars = vars->next_variable)
{
print_variable(vars->name, vars->name_length, vars);
}*/
for(vars = response->variables; vars; vars = vars->next_variable)
{
int count=1;
zabbix_log( LOG_LEVEL_DEBUG, "AV loop(%d)", vars->type);
/* if( (vars->type == ASN_INTEGER) ||*/
if( (vars->type == ASN_UINTEGER)||
(vars->type == ASN_COUNTER) ||
#ifdef OPAQUE_SPECIAL_TYPES
(vars->type == ASN_UNSIGNED64) ||
#endif
(vars->type == ASN_TIMETICKS) ||
(vars->type == ASN_GAUGE)
)
{
/* *result=(long)*vars->val.integer;*/
/*
* This solves situation when large numbers are stored as negative values
* http://sourceforge.net/tracker/index.php?func=detail&aid=700145&group_id=23494&atid=378683
*/
/*zbx_snprintf(result_str,sizeof(result_str),"%ld",(long)*vars->val.integer);*/
/* zbx_snprintf(result_str,sizeof(result_str),"%lu",(long)*vars->val.integer);*/
/* Not correct. Returns huge values. */
/* SET_UI64_RESULT(value, (zbx_uint64_t)*vars->val.integer);*/
if (vars->type == ASN_GAUGE && *vars->val.integer >= 4294967294) {
SET_UI64_RESULT(value, (unsigned long)0);
}
else {
SET_UI64_RESULT(value, (unsigned long)*vars->val.integer);
}
zabbix_log( LOG_LEVEL_DEBUG, "OID [%s] Type [%d] UI64[" ZBX_FS_UI64 "]",
item->snmp_oid,
vars->type,
(zbx_uint64_t)*vars->val.integer);
zabbix_log( LOG_LEVEL_DEBUG, "OID [%s] Type [%d] ULONG[%lu]",
item->snmp_oid,
vars->type,
(zbx_uint64_t)(unsigned long)*vars->val.integer);
}
else if(vars->type == ASN_COUNTER64)
{
/* Incorrect code for 32 bit platforms */
/* SET_UI64_RESULT(value, ((vars->val.counter64->high)<<32)+(vars->val.counter64->low));*/
SET_UI64_RESULT(value, (((zbx_uint64_t)vars->val.counter64->high)<<32)+((zbx_uint64_t)vars->val.counter64->low));
}
else if(vars->type == ASN_INTEGER
#define ASN_FLOAT (ASN_APPLICATION | 8)
#define ASN_DOUBLE (ASN_APPLICATION | 9)
#ifdef OPAQUE_SPECIAL_TYPES
|| (vars->type == ASN_INTEGER64)
#endif
)
{
/* Negative integer values are converted to double */
if(*vars->val.integer<0)
{
SET_DBL_RESULT(value, (double)*vars->val.integer);
}
else
{
SET_UI64_RESULT(value, (zbx_uint64_t)*vars->val.integer);
}
}
#ifdef OPAQUE_SPECIAL_TYPES
else if(vars->type == ASN_FLOAT)
{
SET_DBL_RESULT(value, *vars->val.floatVal);
}
else if(vars->type == ASN_DOUBLE)
{
SET_DBL_RESULT(value, *vars->val.doubleVal);
}
#endif
else if(vars->type == ASN_OCTET_STR)
{
if(item->value_type == ITEM_VALUE_TYPE_FLOAT)
{
p = malloc(vars->val_len+1);
if(p)
{
memcpy(p, vars->val.string, vars->val_len);
p[vars->val_len] = '\0';
dbl = strtod(p, NULL);
SET_DBL_RESULT(value, dbl);
}
else
{
zbx_snprintf(error,sizeof(error),"Cannot allocate required memory");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
}
}
else if(item->value_type != ITEM_VALUE_TYPE_STR)
{
zbx_snprintf(error,sizeof(error),"Cannot store SNMP string value (ASN_OCTET_STR) in item having numeric type");
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret = NOTSUPPORTED;
}
else
{
zabbix_log( LOG_LEVEL_DEBUG, "ASN_OCTET_STR [%s]", vars->val.string);
zabbix_log( LOG_LEVEL_DEBUG, "ASN_OCTET_STR [%d]", vars->val_len);
p = malloc(1024);
if(p)
{
memset(p,0,1024);
snprint_value(p, 1023, vars->name, vars->name_length, vars);
/* Skip STRING: and STRING_HEX: */
c=strchr(p,':');
if(c==NULL)
{
SET_STR_RESULT(value, strdup(p));
}
else
{
SET_STR_RESULT(value, strdup(c+1));
}
zabbix_log( LOG_LEVEL_DEBUG, "ASN_OCTET_STR [%s]", p);
free(p);
}
else
{
zbx_snprintf(error,MAX_STRING_LEN-1,"Cannot allocate required memory");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
}
/* p = malloc(vars->val_len+1);
if(p)
{
zabbix_log( LOG_LEVEL_WARNING, "Result [%s] len [%d]",vars->val.string,vars->val_len);
memcpy(p, vars->val.string, vars->val_len);
p[vars->val_len] = '\0';
SET_STR_RESULT(value, p);
}
else
{
zbx_snprintf(error,sizeof(error),"Cannot allocate required memory");
zabbix_log( LOG_LEVEL_ERR, "%s", error);
SET_MSG_RESULT(value, strdup(error));
}*/
}
}
else if(vars->type == ASN_IPADDRESS)
{
/* ip = vars->val.string;
zbx_snprintf(result_str,sizeof(result_str),"%d.%d.%d.%d",ip[0],ip[1],ip[2],ip[3]);*/
/* if(item->type == 0)
{
ret = NOTSUPPORTED;
}*/
if(item->value_type != ITEM_VALUE_TYPE_STR)
{
zbx_snprintf(error,sizeof(error),"Cannot store SNMP string value (ASN_IPADDRESS) in item having numeric type");
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret = NOTSUPPORTED;
}
else
{
p = malloc(MAX_STRING_LEN);
if(p)
{
ip = vars->val.string;
zbx_snprintf(p,MAX_STRING_LEN-1,"%d.%d.%d.%d",
ip[0],
ip[1],
ip[2],
ip[3]);
SET_STR_RESULT(value, p);
}
else
{
zbx_snprintf(error,MAX_STRING_LEN-1,"Cannot allocate required memory");
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
}
}
}
else
{
/* count is not really used. Has to be removed */
count++;
zbx_snprintf(error,sizeof(error),"OID [%s] value #%d has unknow type [%X]",
item->snmp_oid,
count,
vars->type);
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret = NOTSUPPORTED;
}
}
}
else
{
if (status == STAT_SUCCESS)
{
zabbix_log( LOG_LEVEL_WARNING, "SNMP error in packet. Reason: %s\n",
snmp_errstring(response->errstat));
if(response->errstat == SNMP_ERR_NOSUCHNAME)
{
zbx_snprintf(error,sizeof(error),"SNMP error [%s]",
snmp_errstring(response->errstat));
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret=NOTSUPPORTED;
}
else
{
zbx_snprintf(error,sizeof(error),"SNMP error [%s]",
snmp_errstring(response->errstat));
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret=NOTSUPPORTED;
}
}
else if(status == STAT_TIMEOUT)
{
zbx_snprintf(error,sizeof(error),"Timeout while connecting to [%s]",
session.peername);
/* snmp_sess_perror("snmpget", ss);*/
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret = NETWORK_ERROR;
}
else
{
zbx_snprintf(error,sizeof(error),"SNMP error [%d]",
status);
zabbix_log( LOG_LEVEL_ERR, "%s",
error);
SET_MSG_RESULT(value, strdup(error));
ret=NOTSUPPORTED;
}
}
if (response)
{
snmp_free_pdu(response);
}
snmp_close(ss);
SOCK_CLEANUP;
return ret;
}
int
main(int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu, *response;
netsnmp_variable_list *vars;
int arg;
oid name[MAX_OID_LEN];
size_t name_length;
oid root[MAX_OID_LEN];
size_t rootlen;
int count;
int running;
int status;
int check;
int exitval = 0;
netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "includeRequested",
NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_INCLUDE_REQUESTED);
netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "printStatistics",
NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_PRINT_STATISTICS);
netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "dontCheckOrdering",
NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC);
/*
* get the common command line arguments
*/
switch (arg = snmp_parse_args(argc, argv, &session, "C:", optProc)) {
case NETSNMP_PARSE_ARGS_ERROR:
exit(1);
case NETSNMP_PARSE_ARGS_SUCCESS_EXIT:
exit(0);
case NETSNMP_PARSE_ARGS_ERROR_USAGE:
usage();
exit(1);
default:
break;
}
/*
* get the initial object and subtree
*/
if (arg < argc) {
/*
* specified on the command line
*/
rootlen = MAX_OID_LEN;
if (snmp_parse_oid(argv[arg], root, &rootlen) == NULL) {
snmp_perror(argv[arg]);
exit(1);
}
} else {
/*
* use default value
*/
memmove(root, objid_mib, sizeof(objid_mib));
rootlen = sizeof(objid_mib) / sizeof(oid);
}
SOCK_STARTUP;
/*
* open an SNMP session
*/
ss = snmp_open(&session);
if (ss == NULL) {
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror("snmpbulkwalk", &session);
SOCK_CLEANUP;
exit(1);
}
/*
* setup initial object name
*/
memmove(name, root, rootlen * sizeof(oid));
name_length = rootlen;
running = 1;
check = !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC);
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_INCLUDE_REQUESTED)) {
snmp_get_and_print(ss, root, rootlen);
}
while (running) {
/*
* create PDU for GETBULK request and add object name to request
*/
pdu = snmp_pdu_create(SNMP_MSG_GETBULK);
pdu->non_repeaters = non_reps;
pdu->max_repetitions = reps; /* fill the packet */
snmp_add_null_var(pdu, name, name_length);
/*
* do the request
*/
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS) {
if (response->errstat == SNMP_ERR_NOERROR) {
/*
* check resulting variables
*/
for (vars = response->variables; vars;
vars = vars->next_variable) {
if ((vars->name_length < rootlen)
|| (memcmp(root, vars->name, rootlen * sizeof(oid))
!= 0)) {
/*
* not part of this subtree
*/
running = 0;
continue;
}
numprinted++;
print_variable(vars->name, vars->name_length, vars);
if ((vars->type != SNMP_ENDOFMIBVIEW) &&
(vars->type != SNMP_NOSUCHOBJECT) &&
(vars->type != SNMP_NOSUCHINSTANCE)) {
/*
* not an exception value
*/
if (check
&& snmp_oid_compare(name, name_length,
vars->name,
vars->name_length) >= 0) {
fprintf(stderr, "Error: OID not increasing: ");
fprint_objid(stderr, name, name_length);
fprintf(stderr, " >= ");
fprint_objid(stderr, vars->name,
vars->name_length);
fprintf(stderr, "\n");
running = 0;
exitval = 1;
}
/*
* Check if last variable, and if so, save for next request.
*/
if (vars->next_variable == NULL) {
memmove(name, vars->name,
vars->name_length * sizeof(oid));
name_length = vars->name_length;
}
} else {
/*
* an exception value, so stop
*/
running = 0;
}
}
} else {
/*
* error in response, print it
*/
running = 0;
if (response->errstat == SNMP_ERR_NOSUCHNAME) {
printf("End of MIB\n");
} else {
fprintf(stderr, "Error in packet.\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errindex != 0) {
fprintf(stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++)
/*EMPTY*/;
if (vars)
fprint_objid(stderr, vars->name,
vars->name_length);
fprintf(stderr, "\n");
}
exitval = 2;
}
}
} else if (status == STAT_TIMEOUT) {
fprintf(stderr, "Timeout: No Response from %s\n",
session.peername);
running = 0;
exitval = 1;
} else { /* status == STAT_ERROR */
snmp_sess_perror("snmpbulkwalk", ss);
running = 0;
exitval = 1;
}
if (response)
snmp_free_pdu(response);
}
if (numprinted == 0 && status == STAT_SUCCESS) {
/*
* no printed successful results, which may mean we were
* pointed at an only existing instance. Attempt a GET, just
* for get measure.
*/
snmp_get_and_print(ss, root, rootlen);
}
snmp_close(ss);
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_WALK_PRINT_STATISTICS)) {
printf("Variables found: %d\n", numprinted);
}
SOCK_CLEANUP;
return exitval;
}
void
proxy_parse_config(const char *token, char *line)
{
/*
* proxy args [base-oid] [remap-to-remote-oid]
*/
netsnmp_session session, *ss;
struct simple_proxy *newp, **listpp;
char args[MAX_ARGS][SPRINT_MAX_LEN], *argv[MAX_ARGS];
int argn, arg;
char *cp;
netsnmp_handler_registration *reg;
context_string = NULL;
DEBUGMSGTL(("proxy_config", "entering\n"));
/*
* create the argv[] like array
*/
strcpy(argv[0] = args[0], "snmpd-proxy"); /* bogus entry for getopt() */
for (argn = 1, cp = line; cp && argn < MAX_ARGS;) {
argv[argn] = args[argn];
cp = copy_nword(cp, argv[argn], SPRINT_MAX_LEN);
argn++;
}
for (arg = 0; arg < argn; arg++) {
DEBUGMSGTL(("proxy_args", "final args: %d = %s\n", arg,
argv[arg]));
}
DEBUGMSGTL(("proxy_config", "parsing args: %d\n", argn));
/* Call special parse_args that allows for no specified community string */
arg = snmp_parse_args(argn, argv, &session, "C:", proxyOptProc);
/* reset this in case we modified it */
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_IGNORE_NO_COMMUNITY, 0);
if (arg < 0) {
config_perror("failed to parse proxy args");
return;
}
DEBUGMSGTL(("proxy_config", "done parsing args\n"));
if (arg >= argn) {
config_perror("missing base oid");
return;
}
/*
* usm_set_reportErrorOnUnknownID(0);
*
* hack, stupid v3 ASIs.
*/
/*
* XXX: on a side note, we don't really need to be a reference
* platform any more so the proper thing to do would be to fix
* snmplib/snmpusm.c to pass in the pdu type to usm_process_incoming
* so this isn't needed.
*/
ss = snmp_open(&session);
/*
* usm_set_reportErrorOnUnknownID(1);
*/
if (ss == NULL) {
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror("snmpget", &session);
SOCK_CLEANUP;
return;
}
newp = (struct simple_proxy *) calloc(1, sizeof(struct simple_proxy));
newp->sess = ss;
DEBUGMSGTL(("proxy_init", "name = %s\n", args[arg]));
newp->name_len = MAX_OID_LEN;
if (!snmp_parse_oid(args[arg++], newp->name, &newp->name_len)) {
snmp_perror("proxy");
config_perror("illegal proxy oid specified\n");
return;
}
if (arg < argn) {
DEBUGMSGTL(("proxy_init", "base = %s\n", args[arg]));
newp->base_len = MAX_OID_LEN;
if (!snmp_parse_oid(args[arg++], newp->base, &newp->base_len)) {
snmp_perror("proxy");
config_perror("illegal variable name specified (base oid)\n");
return;
}
}
if ( context_string )
newp->context = strdup(context_string);
DEBUGMSGTL(("proxy_init", "registering at: "));
DEBUGMSGOID(("proxy_init", newp->name, newp->name_len));
DEBUGMSG(("proxy_init", "\n"));
/*
* add to our chain
*/
/*
* must be sorted!
*/
listpp = &proxies;
while (*listpp &&
snmp_oid_compare(newp->name, newp->name_len,
(*listpp)->name, (*listpp)->name_len) > 0) {
listpp = &((*listpp)->next);
}
/*
* listpp should be next in line from us.
*/
if (*listpp) {
/*
* make our next in the link point to the current link
*/
newp->next = *listpp;
}
/*
* replace current link with us
*/
*listpp = newp;
reg = netsnmp_create_handler_registration("proxy",
proxy_handler,
newp->name,
newp->name_len,
HANDLER_CAN_RWRITE);
reg->handler->myvoid = newp;
if (context_string)
reg->contextName = strdup(context_string);
netsnmp_register_handler(reg);
}
int main(int argc, char *argv[])
{
struct snmp_session session, *ss;
struct snmp_pdu *pdu;
struct snmp_pdu *response;
struct variable_list *vars;
int arg;
int count;
int current_name = 0;
char *names[128];
oid name[MAX_OID_LEN];
int name_length;
int status;
/* get the common command line arguments */
arg = snmp_parse_args(argc, argv, &session);
/* get the object names */
for(; arg < argc; arg++)
names[current_name++] = argv[arg];
SOCK_STARTUP;
/* open an SNMP session */
snmp_synch_setup(&session);
ss = snmp_open(&session);
if (ss == NULL){
snmp_perror("snmpget");
SOCK_CLEANUP;
exit(1);
}
/* create PDU for GET request and add object names to request */
pdu = snmp_pdu_create(SNMP_MSG_GET);
for(count = 0; count < current_name; count++){
name_length = MAX_OID_LEN;
if (!snmp_parse_oid(names[count], name, &name_length)) {
fprintf(stderr, "Invalid object identifier: %s\n", names[count]);
failures++;
} else
snmp_add_null_var(pdu, name, name_length);
}
if (failures) {
SOCK_CLEANUP;
exit(1);
}
/* do the request */
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)
print_variable(vars->name, vars->name_length, vars);
} else {
fprintf(stderr, "Error in packet\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errstat == SNMP_ERR_NOSUCHNAME){
fprintf(stderr, "This name doesn't exist: ");
for(count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++)
;
if (vars)
fprint_objid(stderr, vars->name, vars->name_length);
fprintf(stderr, "\n");
}
if ((pdu = snmp_fix_pdu(response, SNMP_MSG_GET)) != NULL)
goto retry;
}
} else if (status == STAT_TIMEOUT){
fprintf(stderr,"Timeout: No Response from %s.\n", session.peername);
snmp_close(ss);
SOCK_CLEANUP;
exit(1);
} else { /* status == STAT_ERROR */
snmp_perror("snmpget");
snmp_close(ss);
SOCK_CLEANUP;
exit(1);
}
if (response)
snmp_free_pdu(response);
snmp_close(ss);
SOCK_CLEANUP;
exit (0);
}
