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net-snmp 5.7
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00001 /* Portions of this file are subject to the following copyright(s). See 00002 * the Net-SNMP's COPYING file for more details and other copyrights 00003 * that may apply: 00004 */ 00005 /* 00006 * Portions of this file are copyrighted by: 00007 * Copyright © 2003 Sun Microsystems, Inc. All rights reserved. 00008 * Use is subject to license terms specified in the COPYING file 00009 * distributed with the Net-SNMP package. 00010 */ 00011 /* 00012 * @file snmp_agent.h 00013 * 00014 * @addtogroup agent 00015 * @addtogroup table 00016 * External definitions for functions and variables in snmp_agent.c. 00017 * 00018 * @{ 00019 */ 00020 00021 #ifndef SNMP_AGENT_H 00022 #define SNMP_AGENT_H 00023 00024 #ifdef __cplusplus 00025 extern "C" { 00026 #endif 00027 00028 #include <net-snmp/library/snmp_impl.h> 00029 #include <net-snmp/library/tools.h> 00030 #include <net-snmp/library/data_list.h> 00031 00032 #define SNMP_MAX_PDU_SIZE 64000 /* local constraint on PDU size sent by agent 00033 * (see also SNMP_MAX_MSG_SIZE in snmp_api.h) */ 00034 00035 /* 00036 * If non-zero, causes the addresses of peers to be logged when receptions 00037 * occur. 00038 */ 00039 00040 extern int log_addresses; 00041 00042 /* 00043 * How many ticks since we last aged the address cache entries. 00044 */ 00045 00046 extern int lastAddrAge; 00047 00054 typedef struct netsnmp_request_info_s { 00058 netsnmp_variable_list *requestvb; 00059 00064 netsnmp_data_list *parent_data; 00065 00066 /* 00067 * pointer to the agent_request_info for this request 00068 */ 00069 struct netsnmp_agent_request_info_s *agent_req_info; 00070 00072 oid *range_end; 00073 size_t range_end_len; 00074 00075 /* 00076 * flags 00077 */ 00078 int delegated; 00079 int processed; 00080 int inclusive; 00081 00082 int status; 00084 int index; 00085 00087 int repeat; 00088 int orig_repeat; 00089 netsnmp_variable_list *requestvb_start; 00090 00091 /* internal use */ 00092 struct netsnmp_request_info_s *next; 00093 struct netsnmp_request_info_s *prev; 00094 struct netsnmp_subtree_s *subtree; 00095 } netsnmp_request_info; 00096 00097 typedef struct netsnmp_set_info_s { 00098 int action; 00099 void *stateRef; 00100 00101 /* 00102 * don't use yet: 00103 */ 00104 void **oldData; 00105 int setCleanupFlags; 00106 #define AUTO_FREE_STATEREF 0x01 /* calls free(stateRef) */ 00107 #define AUTO_FREE_OLDDATA 0x02 /* calls free(*oldData) */ 00108 #define AUTO_UNDO 0x03 /* ... */ 00109 } netsnmp_set_info; 00110 00111 typedef struct netsnmp_tree_cache_s { 00112 struct netsnmp_subtree_s *subtree; 00113 netsnmp_request_info *requests_begin; 00114 netsnmp_request_info *requests_end; 00115 } netsnmp_tree_cache; 00116 00117 #define MODE_GET SNMP_MSG_GET 00118 #define MODE_GETNEXT SNMP_MSG_GETNEXT 00119 #define MODE_GETBULK SNMP_MSG_GETBULK 00120 #define MODE_GET_STASH SNMP_MSG_INTERNAL_GET_STASH 00121 #ifndef NETSNMP_NO_WRITE_SUPPORT 00122 #define MODE_IS_GET(x) ((x >= 128) && (x != -1) && (x != SNMP_MSG_SET)) 00123 #else /* NETSNMP_NO_WRITE_SUPPORT */ 00124 #define MODE_IS_GET(x) ((x >= 128) && (x != -1)) 00125 #endif /* NETSNMP_NO_WRITE_SUPPORT */ 00126 00127 /* #define MODE_IS_GET(x) ((x == SNMP_MSG_GET) || (x == SNMP_MSG_GETNEXT) || (x == SNMP_MSG_GETBULK) || (x == SNMP_MSG_INTERNAL_GET_STASH)) */ 00128 00129 #ifndef NETSNMP_NO_WRITE_SUPPORT 00130 #define MODE_SET_BEGIN SNMP_MSG_INTERNAL_SET_BEGIN 00131 #define MODE_SET_RESERVE1 SNMP_MSG_INTERNAL_SET_RESERVE1 00132 #define MODE_SET_RESERVE2 SNMP_MSG_INTERNAL_SET_RESERVE2 00133 #define MODE_SET_ACTION SNMP_MSG_INTERNAL_SET_ACTION 00134 #define MODE_SET_COMMIT SNMP_MSG_INTERNAL_SET_COMMIT 00135 #define MODE_SET_FREE SNMP_MSG_INTERNAL_SET_FREE 00136 #define MODE_SET_UNDO SNMP_MSG_INTERNAL_SET_UNDO 00137 #define MODE_IS_SET(x) ((x < 128) || (x == -1) || (x == SNMP_MSG_SET)) 00138 /* #define MODE_IS_SET(x) (!MODE_IS_GET(x)) */ 00139 #endif /* NETSNMP_NO_WRITE_SUPPORT */ 00140 00141 #define MODE_BSTEP_PRE_REQUEST SNMP_MSG_INTERNAL_PRE_REQUEST 00142 #define MODE_BSTEP_POST_REQUEST SNMP_MSG_INTERNAL_POST_REQUEST 00143 00144 #define MODE_BSTEP_OBJECT_LOOKUP SNMP_MSG_INTERNAL_OBJECT_LOOKUP 00145 #ifndef NETSNMP_NO_WRITE_SUPPORT 00146 #define MODE_BSTEP_CHECK_VALUE SNMP_MSG_INTERNAL_CHECK_VALUE 00147 #define MODE_BSTEP_ROW_CREATE SNMP_MSG_INTERNAL_ROW_CREATE 00148 #define MODE_BSTEP_UNDO_SETUP SNMP_MSG_INTERNAL_UNDO_SETUP 00149 #define MODE_BSTEP_SET_VALUE SNMP_MSG_INTERNAL_SET_VALUE 00150 #define MODE_BSTEP_CHECK_CONSISTENCY SNMP_MSG_INTERNAL_CHECK_CONSISTENCY 00151 #define MODE_BSTEP_UNDO_SET SNMP_MSG_INTERNAL_UNDO_SET 00152 #define MODE_BSTEP_COMMIT SNMP_MSG_INTERNAL_COMMIT 00153 #define MODE_BSTEP_UNDO_COMMIT SNMP_MSG_INTERNAL_UNDO_COMMIT 00154 #define MODE_BSTEP_IRREVERSIBLE_COMMIT SNMP_MSG_INTERNAL_IRREVERSIBLE_COMMIT 00155 #define MODE_BSTEP_UNDO_CLEANUP SNMP_MSG_INTERNAL_UNDO_CLEANUP 00156 #endif /* NETSNMP_NO_WRITE_SUPPORT */ 00157 00166 typedef struct netsnmp_agent_request_info_s { 00167 int mode; 00169 /* netsnmp_pdu *pdu; */ 00170 struct netsnmp_agent_session_s *asp; /* may not be needed */ 00171 /* 00172 * can be used to pass information on a per-pdu basis from a 00173 * helper to the later handlers 00174 */ 00175 netsnmp_data_list *agent_data; 00176 } netsnmp_agent_request_info; 00177 00178 typedef struct netsnmp_cachemap_s { 00179 int globalid; 00180 int cacheid; 00181 struct netsnmp_cachemap_s *next; 00182 } netsnmp_cachemap; 00183 00184 typedef struct netsnmp_agent_session_s { 00185 int mode; 00186 netsnmp_session *session; 00187 netsnmp_pdu *pdu; 00188 netsnmp_pdu *orig_pdu; 00189 int rw; 00190 int exact; 00191 int status; 00192 int index; 00193 int oldmode; 00194 00195 struct netsnmp_agent_session_s *next; 00196 00197 /* 00198 * new API pointers 00199 */ 00200 netsnmp_agent_request_info *reqinfo; 00201 netsnmp_request_info *requests; 00202 netsnmp_tree_cache *treecache; 00203 netsnmp_variable_list **bulkcache; 00204 int treecache_len; /* length of cache array */ 00205 int treecache_num; /* number of current cache entries */ 00206 netsnmp_cachemap *cache_store; 00207 int vbcount; 00208 } netsnmp_agent_session; 00209 00210 /* 00211 * Address cache handling functions. 00212 */ 00213 00214 void netsnmp_addrcache_initialise(void); 00215 void netsnmp_addrcache_destroy(void); 00216 void netsnmp_addrcache_age(void); 00217 00218 00219 /* 00220 * config file parsing routines 00221 */ 00222 int handle_snmp_packet(int, netsnmp_session *, int, 00223 netsnmp_pdu *, void *); 00224 void snmp_agent_parse_config(char *, char *); 00225 netsnmp_agent_session *init_agent_snmp_session(netsnmp_session *, 00226 netsnmp_pdu *); 00227 void free_agent_snmp_session(netsnmp_agent_session *); 00228 void 00229 netsnmp_remove_and_free_agent_snmp_session(netsnmp_agent_session 00230 *asp); 00231 #ifdef SNMP_NEED_REQUEST_LIST 00232 void 00233 netsnmp_free_agent_snmp_session_by_session(netsnmp_session * sess, 00234 void (*free_request) 00235 (netsnmp_request_list 00236 *)); 00237 #endif 00238 int getNextSessID(void); 00239 void dump_sess_list(void); 00240 int init_master_agent(void); 00241 void shutdown_master_agent(void); 00242 int agent_check_and_process(int block); 00243 void netsnmp_check_outstanding_agent_requests(void); 00244 00245 int netsnmp_request_set_error(netsnmp_request_info *request, 00246 int error_value); 00247 int netsnmp_check_requests_error(netsnmp_request_info *reqs); 00248 int netsnmp_check_all_requests_error(netsnmp_agent_session *asp, 00249 int look_for_specific); 00250 int 00251 netsnmp_set_all_requests_error(netsnmp_agent_request_info *reqinfo, 00252 netsnmp_request_info *requests, 00253 int error_value); 00254 int netsnmp_request_set_error_idx(netsnmp_request_info *requests, 00255 int error_value, int idx); 00256 int 00257 netsnmp_request_set_error_all(netsnmp_request_info *requests, 00258 int error_value); 00259 00261 int netsnmp_set_request_error(netsnmp_agent_request_info 00262 *reqinfo, 00263 netsnmp_request_info 00264 *request, int error_value); 00266 int netsnmp_set_mode_request_error(int mode, 00267 netsnmp_request_info 00268 *request, 00269 int error_value); 00270 00271 u_long netsnmp_marker_uptime(marker_t pm); 00272 u_long netsnmp_timeval_uptime(struct timeval *tv); 00273 const_marker_t netsnmp_get_agent_starttime(void); 00274 void netsnmp_set_agent_starttime(marker_t s); 00275 u_long netsnmp_get_agent_uptime(void); 00276 void netsnmp_set_agent_uptime(u_long hsec); 00277 int netsnmp_check_transaction_id(int transaction_id); 00278 int netsnmp_agent_check_packet(netsnmp_session *, 00279 struct netsnmp_transport_s 00280 *, void *, int); 00281 int netsnmp_agent_check_parse(netsnmp_session *, 00282 netsnmp_pdu *, int); 00283 int netsnmp_allocate_globalcacheid(void); 00284 00285 int netsnmp_remove_delegated_requests_for_session(netsnmp_session *sess); 00286 00287 /* 00288 * Register and de-register agent NSAPs. 00289 */ 00290 00291 struct netsnmp_transport_s; 00292 00293 int netsnmp_register_agent_nsap(struct netsnmp_transport_s 00294 *t); 00295 void netsnmp_deregister_agent_nsap(int handle); 00296 00297 void 00298 netsnmp_agent_add_list_data(netsnmp_agent_request_info *agent, 00299 netsnmp_data_list *node); 00300 00301 int 00302 netsnmp_agent_remove_list_data(netsnmp_agent_request_info *ari, 00303 const char * name); 00304 00305 void * 00306 netsnmp_agent_get_list_data(netsnmp_agent_request_info 00307 *agent, const char *name); 00308 00309 void 00310 netsnmp_free_agent_data_set(netsnmp_agent_request_info *agent); 00311 00312 void 00313 netsnmp_free_agent_data_sets(netsnmp_agent_request_info *agent); 00314 void 00315 netsnmp_free_agent_request_info(netsnmp_agent_request_info *ari); 00316 00317 #ifdef __cplusplus 00318 } 00319 #endif 00320 #endif 00321
1.7.4