/* * SNMPv1 MIB group implementation - snmp.c * */ #include #include #if HAVE_STRING_H #include #else #include #endif #if HAVE_NETINET_IN_H #include #endif #if HAVE_WINSOCK_H #include #endif #include #include #include "util_funcs.h" #include "snmp_mib.h" #include "sysORTable.h" /********************* * * Kernel & interface information, * and internal forward declarations * *********************/ extern int snmp_enableauthentraps; extern int snmp_enableauthentrapsset; int old_snmp_enableauthentraps; /********************* * * Initialisation & common implementation functions * *********************/ /* * define the structure we're going to ask the agent to register our * information at */ struct variable1 snmp_variables[] = { {SNMPINPKTS, ASN_COUNTER, RONLY, var_snmp, 1, {1}}, {SNMPOUTPKTS, ASN_COUNTER, RONLY, var_snmp, 1, {2}}, {SNMPINBADVERSIONS, ASN_COUNTER, RONLY, var_snmp, 1, {3}}, {SNMPINBADCOMMUNITYNAMES, ASN_COUNTER, RONLY, var_snmp, 1, {4}}, {SNMPINBADCOMMUNITYUSES, ASN_COUNTER, RONLY, var_snmp, 1, {5}}, {SNMPINASNPARSEERRORS, ASN_COUNTER, RONLY, var_snmp, 1, {6}}, {SNMPINTOOBIGS, ASN_COUNTER, RONLY, var_snmp, 1, {8}}, {SNMPINNOSUCHNAMES, ASN_COUNTER, RONLY, var_snmp, 1, {9}}, {SNMPINBADVALUES, ASN_COUNTER, RONLY, var_snmp, 1, {10}}, {SNMPINREADONLYS, ASN_COUNTER, RONLY, var_snmp, 1, {11}}, {SNMPINGENERRS, ASN_COUNTER, RONLY, var_snmp, 1, {12}}, {SNMPINTOTALREQVARS, ASN_COUNTER, RONLY, var_snmp, 1, {13}}, {SNMPINTOTALSETVARS, ASN_COUNTER, RONLY, var_snmp, 1, {14}}, {SNMPINGETREQUESTS, ASN_COUNTER, RONLY, var_snmp, 1, {15}}, {SNMPINGETNEXTS, ASN_COUNTER, RONLY, var_snmp, 1, {16}}, {SNMPINSETREQUESTS, ASN_COUNTER, RONLY, var_snmp, 1, {17}}, {SNMPINGETRESPONSES, ASN_COUNTER, RONLY, var_snmp, 1, {18}}, {SNMPINTRAPS, ASN_COUNTER, RONLY, var_snmp, 1, {19}}, {SNMPOUTTOOBIGS, ASN_COUNTER, RONLY, var_snmp, 1, {20}}, {SNMPOUTNOSUCHNAMES, ASN_COUNTER, RONLY, var_snmp, 1, {21}}, {SNMPOUTBADVALUES, ASN_COUNTER, RONLY, var_snmp, 1, {22}}, {SNMPOUTGENERRS, ASN_COUNTER, RONLY, var_snmp, 1, {24}}, {SNMPOUTGETREQUESTS, ASN_COUNTER, RONLY, var_snmp, 1, {25}}, {SNMPOUTGETNEXTS, ASN_COUNTER, RONLY, var_snmp, 1, {26}}, {SNMPOUTSETREQUESTS, ASN_COUNTER, RONLY, var_snmp, 1, {27}}, {SNMPOUTGETRESPONSES, ASN_COUNTER, RONLY, var_snmp, 1, {28}}, {SNMPOUTTRAPS, ASN_COUNTER, RONLY, var_snmp, 1, {29}}, {SNMPENABLEAUTHENTRAPS, ASN_INTEGER, RWRITE, var_snmp, 1, {30}}, {SNMPSILENTDROPS, ASN_COUNTER, RONLY, var_snmp, 1, {31}}, {SNMPPROXYDROPS, ASN_COUNTER, RONLY, var_snmp, 1, {32}} }; /* * Define the OID pointer to the top of the mib tree that we're * registering underneath */ oid snmp_variables_oid[] = { SNMP_OID_MIB2, 11 }; #ifdef USING_MIBII_SYSTEM_MIB_MODULE extern oid system_module_oid[]; extern int system_module_oid_len; extern int system_module_count; #endif static int snmp_enableauthentraps_store(int a, int b, void *c, void *d) { char line[SNMP_MAXBUF_SMALL]; if (snmp_enableauthentrapsset > 0) { snprintf(line, SNMP_MAXBUF_SMALL, "pauthtrapenable %d", snmp_enableauthentraps); snmpd_store_config(line); } return 0; } void init_snmp_mib(void) { /* * register ourselves with the agent to handle our mib tree */ REGISTER_MIB("mibII/snmp", snmp_variables, variable1, snmp_variables_oid); #ifdef USING_MIBII_SYSTEM_MIB_MODULE if (++system_module_count == 3) REGISTER_SYSOR_TABLE(system_module_oid, system_module_oid_len, "The MIB module for SNMPv2 entities"); #endif snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_STORE_DATA, snmp_enableauthentraps_store, NULL); } /* * header_snmp(... * Arguments: * vp IN - pointer to variable entry that points here * name IN/OUT - IN/name requested, OUT/name found * length IN/OUT - length of IN/OUT oid's * exact IN - TRUE if an exact match was requested * var_len OUT - length of variable or 0 if function returned * write_method * */ /********************* * * System specific implementation functions * (actually common!) * *********************/ u_char * var_snmp(struct variable *vp, oid * name, size_t * length, int exact, size_t * var_len, WriteMethod ** write_method) { static long long_ret; *write_method = 0; /* assume it isnt writable for the time being */ *var_len = sizeof(long_ret); /* assume an integer and change later if not */ if (header_generic(vp, name, length, exact, var_len, write_method) == MATCH_FAILED) return NULL; /* * this is where we do the value assignments for the mib results. */ if (vp->magic == SNMPENABLEAUTHENTRAPS) { *write_method = write_snmp; long_return = snmp_enableauthentraps; return (u_char *) & long_return; } else if ((vp->magic >= 1) && (vp->magic <= (STAT_SNMP_STATS_END - STAT_SNMP_STATS_START + 1))) { long_ret = snmp_get_statistic(vp->magic + STAT_SNMP_STATS_START - 1); return (unsigned char *) &long_ret; } return NULL; } /* * only for snmpEnableAuthenTraps: */ int write_snmp(int action, u_char * var_val, u_char var_val_type, size_t var_val_len, u_char * statP, oid * name, size_t name_len) { long intval = 0; switch (action) { case RESERVE1: /* Check values for acceptability */ if (var_val_type != ASN_INTEGER) { DEBUGMSGTL(("mibII/snmp_mib", "%x not integer type", var_val_type)); return SNMP_ERR_WRONGTYPE; } intval = *((long *) var_val); if (intval != 1 && intval != 2) { DEBUGMSGTL(("mibII/snmp_mib", "not valid %x\n", intval)); return SNMP_ERR_WRONGVALUE; } if (snmp_enableauthentrapsset < 0) { /* * The object is set in a read-only configuration file. */ return SNMP_ERR_NOTWRITABLE; } break; case RESERVE2: /* Allocate memory and similar resources */ /* * Using static variables, so nothing needs to be done */ break; case ACTION: /* Perform the SET action (if reversible) */ /* * Save the old value, in case of UNDO */ intval = *((long *) var_val); old_snmp_enableauthentraps = snmp_enableauthentraps; snmp_enableauthentraps = intval; break; case UNDO: /* Reverse the SET action and free resources */ snmp_enableauthentraps = old_snmp_enableauthentraps; break; case COMMIT: snmp_enableauthentrapsset = 1; snmp_save_persistent(netsnmp_ds_get_string(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_APPTYPE)); (void) snmp_call_callbacks(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_STORE_DATA, NULL); snmp_clean_persistent(netsnmp_ds_get_string (NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_APPTYPE)); break; case FREE: /* Free any resources allocated */ break; } return SNMP_ERR_NOERROR; } /********************* * * Internal implementation functions * *********************/