utility_handlers – Simplify request processing A group of handlers intended to simplify certain aspects of processing a request for a MIB object. Modules bulk_to_next Convert GETBULK requests into GETNEXT requests for the handler. cache_handler Maintains a cache of data for use by lower level handlers. debug Print out debugging information about the handler chain being…
send_easy_trap, send_trap_vars, send_v2trap – send TRAPs or INFORMs from a Net-SNMP MIB module Synopsis #include <net-snmp/agent/agent_trap.h> void send_easy_trap(int trap, int specific); void send_trap_vars(int trap, int specific, struct variable_list *vars); void send_v2trap(struct variable_list *vars); Description These three routines may be used to send traps from a MIB module within the Net-SNMP agent (including an AgentX subagent)….
table_iterator – The table iterator helper is designed to simplify the task of writing a table handler for the net-snmp agent when the data being accessed is not in an oid sorted form and must be accessed externally. Data Structures struct ti_cache_info_s struct netsnmp_iterator_info_s Holds iterator information containing functions which should be called by the…
table_dataset – Helps you implement a table with automatted storage. Functions void netsnmp_init_table_dataset (void) netsnmp_table_data_set * netsnmp_create_table_data_set (const char *table_name) Create a netsnmp_table_data_set structure given a table_data definition. netsnmp_table_row * netsnmp_table_data_set_clone_row (netsnmp_table_row *row) clones a dataset row, including all data. NETSNMP_INLINE netsnmp_table_data_set_storage * netsnmp_table_dataset_delete_data (netsnmp_table_data_set_storage *data) deletes a single dataset table data. NETSNMP_INLINE void netsnmp_table_dataset_delete_all_data…
table_data – Helps you implement a table with datamatted storage. Modules table_dataset Helps you implement a table with automatted storage. Functions void netsnmp_table_data_generate_index_oid (netsnmp_table_row *row) netsnmp_table_data * netsnmp_create_table_data (const char *name) creates and returns a pointer to table data set netsnmp_table_row * netsnmp_create_table_data_row (void) creates and returns a pointer to table data set netsnmp_table_row *…
table_array – Helps you implement a table when data can be stored locally. Functions int netsnmp_table_container_register (netsnmp_handler_registration *reginfo, netsnmp_table_registration_info *tabreg, netsnmp_table_array_callbacks *cb, netsnmp_container *container, int group_rows) register specified callbacks for the specified table/oid. int netsnmp_table_array_register (netsnmp_handler_registration *reginfo, netsnmp_table_registration_info *tabreg, netsnmp_table_array_callbacks *cb, netsnmp_container *container, int group_rows) netsnmp_mib_handler * netsnmp_find_table_array_handler (netsnmp_handler_registration *reginfo) find the handler for the…
table – Helps you implement a table. Modules table_array Helps you implement a table when data can be stored locally. table_container Helps you implement a table when data can be found via a netsnmp_container. table_data Helps you implement a table with datamatted storage. generic_table_API General requirements for a table helper. table_iterator The table iterator helper…
stash_cache – Automatically caches data for certain handlers. Functions netsnmp_stash_cache_info * netsnmp_get_new_stash_cache (void) netsnmp_mib_handler * netsnmp_get_timed_bare_stash_cache_handler (int timeout, oid *rootoid, size_t rootoid_len) returns a stash_cache handler that can be injected into a given handler chain (with the specified timeout and root OID values), but *only* if that handler chain explicitly supports stash cache processing. netsnmp_mib_handler…
snmp_sess_init, snmp_open, snmp_send, snmp_async_send, snmp_select_info, snmp_read, snmp_timeout, snmp_synch_response, snmp_close, snmp_perror, snmp_sess_perror, snmp_error, snmp_api_errstring – netsnmp_session_api functions Synopsis #include <net-snmp/session_api.h> void snmp_sess_init(netsnmp_session *sess); netsnmp_session* snmp_open ( netsnmp_session *sess); /* Input parameter not used in active sessions */ int snmp_send(netsnmp_session *session, netsnmp_pdu *pdu); int snmp_async_send(netsnmp_session *session, netsnmp_pdu *pdu, snmp_callback callback, void *callbackData); int snmp_select_info(int *numfds, fd_set *fdset,…
snmp_sess_init, snmp_sess_open, snmp_sess_session, snmp_sess_send, snmp_sess_async_send, snmp_sess_select_info, snmp_sess_read, snmp_sess_timeout, snmp_sess_synch_response, snmp_sess_close, snmp_sess_error – session functions Synopsis #include <net-snmp/session_api.h> void snmp_sess_init(struct snmp_session *session); void *snmp_sess_open(struct snmp_session *session); struct snmp_session *snmp_sess_session(void *handle); int snmp_sess_send(void *handle, struct snmp_pdu *pdu); int snmp_sess_async_send(void *handle, struct snmp_pdu *pdu, snmp_callback callback, void *callbackData); int snmp_sess_select_info(void *handle, int *numfds, fd_set *fdset, struct timeval *timeout,…
serialize – Calls sub handlers one request at a time. Functions netsnmp_mib_handler * netsnmp_get_serialize_handler (void) returns a serialize handler that can be injected into a given handler chain. int netsnmp_register_serialize (netsnmp_handler_registration *reginfo) functionally the same as calling netsnmp_register_handler() but also injects a serialize handler at the same time for you. int netsnmp_serialize_helper_handler (netsnmp_mib_handler *handler, netsnmp_handler_registration…
scalar – Process scalars easily. Functions netsnmp_mib_handler * netsnmp_get_scalar_handler (void) Creates a scalar handler calling netsnmp_create_handler with a handler name defaulted to ‘scalar’ and access method, netsnmp_scalar_helper_handler. int netsnmp_register_scalar (netsnmp_handler_registration *reginfo) This function registers a scalar helper handler. int netsnmp_register_read_only_scalar (netsnmp_handler_registration *reginfo) This function registers a read only scalar helper handler. int netsnmp_scalar_helper_handler (netsnmp_mib_handler *handler,…
row_merge – Calls sub handlers with request for one row at a time. Defines #define ROW_MERGE_WAITING 0 #define ROW_MERGE_ACTIVE 1 #define ROW_MERGE_DONE 2 #define ROW_MERGE_HEAD 3 Functions netsnmp_mib_handler * netsnmp_get_row_merge_handler (int prefix_len) returns a row_merge handler that can be injected into a given handler chain. int netsnmp_register_row_merge (netsnmp_handler_registration *reginfo) functionally the same as calling netsnmp_register_handler()…
read_only – Make your handler read_only automatically The only purpose of this handler is to return an appropriate error for any requests passed to it in a SET mode. Functions netsnmp_mib_handler * netsnmp_get_read_only_handler (void) returns a read_only handler that can be injected into a given handler chain. int netsnmp_read_only_helper (netsnmp_mib_handler *handler, netsnmp_handler_registration *reginfo, netsnmp_agent_request_info *reqinfo,…
add_mibdir, netsnmp_init_mib, shutdown_mib, netsnmp_read_module, read_mib, read_all_mibs, add_module_replacement, snmp_set_mib_errors, snmp_set_mib_warnings, snmp_set_save_descriptions, read_objid, snmp_parse_oid, get_module_node, print_mib, print_objid, fprint_objid, snprint_objid, print_description, fprint_description, snprint_description – netsnmp_mib_api functions Synopsis #include <net-snmp/mib_api.h> Initialisation and Shutdown int add_mibdir(const char *dirname); void netsnmp_init_mib(void); void shutdown_mib(void); Reading and Parsing MIBs struct tree * netsnmp_read_module(const char *name); struct tree *read_mib(const char *filename); struct tree *read_all_mibs(void);…
snmp_pdu_create, snmp_clone_pdu, snmp_fix_pdu, snmp_free_pdu – netsnmp_pdu_api functions Synopsis #include <net-snmp/pdu_api.h> netsnmp_pdu *snmp_pdu_create( inttype); netsnmp_pdu *snmp_clone_pdu( netsnmp_pdu*pdu); netsnmp_pdu *snmp_fix_pdu( netsnmp_pdu*pdu, int idx); netsnmp_pdu *snmp_free_pdu( netsnmp_pdu*pdu); Description These functions deal with SNMP request structures. snmp_pdu_create snmp_clone_pdu snmp_fix_pdu snmp_free_pdu See Also varbind_api(3) session_api(3)
old_api – Calls mib module code written in the old style of code. Functions netsnmp_mib_handler * get_old_api_handler (void) returns a old_api handler that should be the final calling handler. 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…
multiplexer – Splits mode requests into calls to different handlers. Functions netsnmp_mib_handler * netsnmp_get_multiplexer_handler (netsnmp_mib_handler_methods *req) returns a multiplixer handler given a netsnmp_mib_handler_methods structure of subhandlers. int netsnmp_multiplexer_helper_handler (netsnmp_mib_handler *handler, netsnmp_handler_registration *reginfo, netsnmp_agent_request_info *reqinfo, netsnmp_request_info *requests) implements the multiplexer helper Detailed Description Splits mode requests into calls to different handlers. The multiplexer helper lets you…
mode_end_call – At the end of a series of requests, call another handler hook. Functions netsnmp_mib_handler * netsnmp_get_mode_end_call_handler (netsnmp_mode_handler_list *endlist) returns a mode_end_call handler that can be injected into a given handler chain. netsnmp_mode_handler_list * netsnmp_mode_end_call_add_mode_callback (netsnmp_mode_handler_list *endlist, int mode, netsnmp_mib_handler *callbackh) adds a mode specific callback to the callback list. int netsnmp_mode_end_call_helper (netsnmp_mib_handler *handler,…
mib parsing and datatype manipulation routines. – Data Structures struct _PrefixList struct parse_hints Typedefs typedef _PrefixList * PrefixListPtr typedef _PrefixList PrefixList Enumerations enum inet_address_type { IPV4 = 1, IPV6 = 2, IPV4Z = 3, IPV6Z = 4, DNS = 16 } Functions int _sprint_hexstring_line (u_char **buf, size_t *buf_len, size_t *out_len, int allow_realloc, const u_char *cp,…