void init_mysnmpagent()
{
netsnmp_handler_registration *reg;
reg=netsnmp_create_handler_registration("mytestoid",MY_MIB_handler,myOid,OID_LENGTH(myOid),HANDLER_CAN_RWRITE);
netsnmp_register_handler(reg);
printf("Register my oid %s\n",myOid);
}
/** Registers an old API set into the mib tree. Functionally this
* mimics the old register_mib_context() function (and in fact the new
* register_mib_context() function merely calls this new old_api one).
*/
int
netsnmp_register_old_api(const char *moduleName,
struct variable *var,
size_t varsize,
size_t numvars,
oid * mibloc,
size_t mibloclen,
int priority,
int range_subid,
oid range_ubound,
netsnmp_session * ss,
const char *context, int timeout, int flags)
{
unsigned int i;
/*
* register all subtree nodes
*/
for (i = 0; i < numvars; i++) {
struct variable *vp;
netsnmp_handler_registration *reginfo =
SNMP_MALLOC_TYPEDEF(netsnmp_handler_registration);
memdup((void *) &vp,
(void *) (struct variable *) ((char *) var + varsize * i),
varsize);
reginfo->handler = get_old_api_handler();
reginfo->handlerName = strdup(moduleName);
reginfo->rootoid_len = (mibloclen + vp->namelen);
reginfo->rootoid =
(oid *) malloc(reginfo->rootoid_len * sizeof(oid));
memcpy(reginfo->rootoid, mibloc, mibloclen * sizeof(oid));
memcpy(reginfo->rootoid + mibloclen, vp->name, vp->namelen
* sizeof(oid));
reginfo->handler->myvoid = (void *) vp;
reginfo->priority = priority;
reginfo->range_subid = range_subid;
reginfo->range_ubound = range_ubound;
reginfo->timeout = timeout;
reginfo->contextName = (context) ? strdup(context) : NULL;
reginfo->modes = HANDLER_CAN_RWRITE;
/*
* register ourselves in the mib tree
*/
if (netsnmp_register_handler(reginfo) != MIB_REGISTERED_OK) {
/** netsnmp_handler_registration_free(reginfo); already freed */
SNMP_FREE(vp);
}
}
return SNMPERR_SUCCESS;
}
int
netsnmp_cache_handler_register(netsnmp_handler_registration * reginfo,
netsnmp_cache* cache)
{
netsnmp_mib_handler *handler = NULL;
handler = netsnmp_cache_handler_get(cache);
netsnmp_inject_handler(reginfo, handler);
return netsnmp_register_handler(reginfo);
}
int
netsnmp_register_cache_handler(netsnmp_handler_registration * reginfo,
int timeout, NetsnmpCacheLoad * load_hook,
NetsnmpCacheFree * free_hook)
{
netsnmp_mib_handler *handler = NULL;
handler = netsnmp_get_cache_handler(timeout, load_hook, free_hook,
reginfo->rootoid,
reginfo->rootoid_len);
netsnmp_inject_handler(reginfo, handler);
return netsnmp_register_handler(reginfo);
}
int
netsnmp_register_null_context(oid * loc, size_t loc_len,
const char *contextName)
{
netsnmp_handler_registration *reginfo;
reginfo = SNMP_MALLOC_TYPEDEF(netsnmp_handler_registration);
reginfo->handlerName = strdup("");
reginfo->rootoid = loc;
reginfo->rootoid_len = loc_len;
reginfo->handler =
netsnmp_create_handler("null", netsnmp_null_handler);
if (contextName)
reginfo->contextName = strdup(contextName);
reginfo->modes = HANDLER_CAN_DEFAULT;
return netsnmp_register_handler(reginfo);
}
static int
_cache_handler_register(netsnmp_handler_registration * reginfo,
netsnmp_mib_handler *handler)
{
/** success path */
if (reginfo && handler &&
(netsnmp_inject_handler(reginfo, handler) == SNMPERR_SUCCESS))
return netsnmp_register_handler(reginfo);
/** error path */
snmp_log(LOG_ERR, "could not register cache handler\n");
if (handler)
netsnmp_handler_free(handler);
netsnmp_handler_registration_free(reginfo);
return MIB_REGISTRATION_FAILED;
}
/** functionally the same as calling netsnmp_register_handler() but also
* injects a serialize handler at the same time for you. */
int
netsnmp_register_serialize(netsnmp_handler_registration *reginfo)
{
netsnmp_inject_handler(reginfo, netsnmp_get_serialize_handler());
return netsnmp_register_handler(reginfo);
}
void
init_testhandler(void)
{
/*
* we're registering at .1.2.3.4
*/
netsnmp_handler_registration *my_test;
netsnmp_table_registration_info *table_info;
u_long ind1;
netsnmp_table_data *table;
netsnmp_table_data_set *table_set;
netsnmp_table_row *row;
DEBUGMSGTL(("testhandler", "initializing\n"));
/*
* basic handler test
*/
netsnmp_register_handler(netsnmp_create_handler_registration
("myTest", my_test_handler, my_test_oid, 4,
HANDLER_CAN_RONLY));
/*
* instance handler test
*/
netsnmp_register_instance(netsnmp_create_handler_registration
("myInstance", my_test_instance_handler,
my_instance_oid, 5, HANDLER_CAN_RWRITE));
netsnmp_register_ulong_instance("myulong",
my_data_ulong_instance, 4,
&my_ulong, NULL);
/*
* table helper test
*/
my_test = netsnmp_create_handler_registration("myTable",
my_test_table_handler,
my_table_oid, 4,
HANDLER_CAN_RONLY);
if (!my_test)
return;
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
if (table_info == NULL)
return;
netsnmp_table_helper_add_indexes(table_info, ASN_INTEGER, ASN_INTEGER,
0);
table_info->min_column = 3;
table_info->max_column = 3;
netsnmp_register_table(my_test, table_info);
/*
* data table helper test
*/
/*
* we'll construct a simple table here with two indexes: an
* integer and a string (why not). It'll contain only one
* column so the data pointer is merely the data in that
* column.
*/
table = netsnmp_create_table_data("data_table_test");
netsnmp_table_data_add_index(table, ASN_INTEGER);
netsnmp_table_data_add_index(table, ASN_OCTET_STR);
/*
* 1 partridge in a pear tree
*/
row = netsnmp_create_table_data_row();
ind1 = 1;
netsnmp_table_row_add_index(row, ASN_INTEGER, &ind1, sizeof(ind1));
netsnmp_table_row_add_index(row, ASN_OCTET_STR, "partridge",
strlen("partridge"));
row->data = (void *) "pear tree";
netsnmp_table_data_add_row(table, row);
/*
* 2 turtle doves
*/
row = netsnmp_create_table_data_row();
ind1 = 2;
netsnmp_table_row_add_index(row, ASN_INTEGER, &ind1, sizeof(ind1));
netsnmp_table_row_add_index(row, ASN_OCTET_STR, "turtle",
strlen("turtle"));
row->data = (void *) "doves";
netsnmp_table_data_add_row(table, row);
/*
* we're going to register it as a normal table too, so we get the
* automatically parsed column and index information
*/
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
if (table_info == NULL)
return;
netsnmp_table_helper_add_indexes(table_info, ASN_INTEGER,
ASN_OCTET_STR, 0);
table_info->min_column = 3;
table_info->max_column = 3;
netsnmp_register_read_only_table_data
(netsnmp_create_handler_registration
("12days", my_data_table_handler, my_data_table_oid, 4,
HANDLER_CAN_RONLY), table, table_info);
}
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
netsnmp_table_row_register(netsnmp_handler_registration *reginfo,
netsnmp_table_registration_info *tabreg,
void *row, netsnmp_variable_list *index)
{
netsnmp_handler_registration *reg2;
netsnmp_mib_handler *handler;
oid row_oid[MAX_OID_LEN];
size_t row_oid_len, len;
char tmp[SNMP_MAXBUF_MEDIUM];
if ((NULL == reginfo) || (NULL == reginfo->handler) || (NULL == tabreg)) {
snmp_log(LOG_ERR, "bad param in netsnmp_table_row_register\n");
return SNMPERR_GENERR;
}
/*
* The first table_row invoked for a particular table should
* register the full table as well, with a default handler to
* process requests for non-existent (or incomplete) rows.
*
* Subsequent table_row registrations attempting to set up
* this default handler would fail - preferably silently!
*/
snprintf(tmp, sizeof(tmp), "%s_table", reginfo->handlerName);
reg2 = netsnmp_create_handler_registration(
tmp, _table_row_default_handler,
reginfo->rootoid, reginfo->rootoid_len,
reginfo->modes);
netsnmp_register_table(reg2, tabreg); /* Ignore return value */
/*
* Adjust the OID being registered, to take account
* of the indexes and column range provided....
*/
row_oid_len = reginfo->rootoid_len;
memcpy( row_oid, (u_char *) reginfo->rootoid, row_oid_len * sizeof(oid));
row_oid[row_oid_len++] = 1; /* tableEntry */
row_oid[row_oid_len++] = tabreg->min_column;
reginfo->range_ubound = tabreg->max_column;
reginfo->range_subid = row_oid_len-1;
build_oid_noalloc(&row_oid[row_oid_len],
MAX_OID_LEN-row_oid_len, &len, NULL, 0, index);
row_oid_len += len;
free(reginfo->rootoid);
memdup((u_char **) & reginfo->rootoid, (const u_char *) row_oid,
row_oid_len * sizeof(oid));
reginfo->rootoid_len = row_oid_len;
/*
* ... insert a minimal handler ...
*/
handler = netsnmp_table_row_handler_get(row);
netsnmp_inject_handler(reginfo, handler );
/*
* ... and register the row
*/
return netsnmp_register_handler(reginfo);
}
