/* * callback.c: A generic callback mechanism */ #ifndef CALLBACK_H #define CALLBACK_H #ifdef __cplusplus extern "C" { #endif #define MAX_CALLBACK_IDS 2 #define MAX_CALLBACK_SUBIDS 16 /* * Callback Major Types */ #define SNMP_CALLBACK_LIBRARY 0 #define SNMP_CALLBACK_APPLICATION 1 /* * SNMP_CALLBACK_LIBRARY minor types */ #define SNMP_CALLBACK_POST_READ_CONFIG 0 #define SNMP_CALLBACK_STORE_DATA 1 #define SNMP_CALLBACK_SHUTDOWN 2 #define SNMP_CALLBACK_POST_PREMIB_READ_CONFIG 3 #define SNMP_CALLBACK_LOGGING 4 #define SNMP_CALLBACK_SESSION_INIT 5 #define SNMP_CALLBACK_PRE_READ_CONFIG 7 #define SNMP_CALLBACK_PRE_PREMIB_READ_CONFIG 8 /* * Callback priority (lower priority numbers called first( */ #define NETSNMP_CALLBACK_HIGHEST_PRIORITY -1024 #define NETSNMP_CALLBACK_DEFAULT_PRIORITY 0 #define NETSNMP_CALLBACK_LOWEST_PRIORITY 1024 typedef int (SNMPCallback) (int majorID, int minorID, void *serverarg, void *clientarg); struct snmp_gen_callback { SNMPCallback *sc_callback; void *sc_client_arg; int priority; struct snmp_gen_callback *next; }; /* * function prototypes */ NETSNMP_IMPORT void init_callbacks(void); NETSNMP_IMPORT int netsnmp_register_callback(int major, int minor, SNMPCallback * new_callback, void *arg, int priority); NETSNMP_IMPORT int snmp_register_callback(int major, int minor, SNMPCallback * new_callback, void *arg); NETSNMP_IMPORT int snmp_call_callbacks(int major, int minor, void *caller_arg); NETSNMP_IMPORT int snmp_callback_available(int major, int minor); /* is >1 available */ NETSNMP_IMPORT int snmp_count_callbacks(int major, int minor); /* ret the number registered */ NETSNMP_IMPORT int snmp_unregister_callback(int major, int minor, SNMPCallback * new_callback, void *arg, int matchargs); NETSNMP_IMPORT void clear_callback (void); int netsnmp_callback_clear_client_arg(void *, int i, int j); struct snmp_gen_callback *snmp_callback_list(int major, int minor); #ifdef __cplusplus } #endif #endif /* CALLBACK_H */