usmDHParameters.c
上传用户:wxp200602
上传日期:2007-10-30
资源大小:4028k
文件大小:4k
- /*
- * Note: this file originally auto-generated by mib2c using
- * : mib2c.scalar.conf,v 1.7 2003/04/08 14:57:04 dts12 Exp $
- */
- #include <net-snmp/net-snmp-config.h>
- #include <net-snmp/net-snmp-includes.h>
- #include <net-snmp/agent/net-snmp-agent-includes.h>
- #include "usmDHParameters.h"
- #include <openssl/dh.h>
- static DH *dh_params = NULL;
- DH *
- get_dh_params(void)
- {
- return dh_params;
- }
- /** Initializes the usmDHParameters module */
- void
- init_usmDHParameters(void)
- {
- static oid usmDHParameters_oid[] =
- { 1, 3, 6, 1, 3, 101, 1, 1, 1 };
- DEBUGMSGTL(("usmDHParameters", "Initializingn"));
- netsnmp_register_scalar(netsnmp_create_handler_registration
- ("usmDHParameters", handle_usmDHParameters,
- usmDHParameters_oid,
- OID_LENGTH(usmDHParameters_oid),
- HANDLER_CAN_RWRITE));
- /* currently hard coded to the oakly group 2 set. */
- /* these values are modifiable via SNMP SETs if needed by
- management apps though */
- if (!dh_params) {
- dh_params = DH_new();
- dh_params->g = BN_new();
- BN_hex2bn(&dh_params->g, "02");
- BN_hex2bn(&dh_params->p, "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff");
- }
- }
- int
- handle_usmDHParameters(netsnmp_mib_handler *handler,
- netsnmp_handler_registration *reginfo,
- netsnmp_agent_request_info *reqinfo,
- netsnmp_request_info *requests)
- {
- /*
- * We are never called for a GETNEXT if it's registered as a
- * "instance", as it's "magically" handled for us.
- */
- static unsigned char *cp = NULL;
- static DH *dh_tmpp = NULL;
- int cp_len;
- /*
- * a instance handler also only hands us one request at a time, so
- * we don't need to loop over a list of requests; we'll only get one.
- */
- switch (reqinfo->mode) {
- case MODE_GET:
- if(cp) {
- free(cp);
- cp = NULL;
- }
- cp_len = i2d_DHparams(dh_params, &cp);
- if (cp_len > 0)
- snmp_set_var_typed_value(requests->requestvb, ASN_OCTET_STR,
- (u_char *) cp, cp_len);
- break;
- /*
- * SET REQUEST
- *
- * multiple states in the transaction. See:
- * http://www.net-snmp.org/tutorial-5/toolkit/mib_module/set-actions.jpg
- */
- case MODE_SET_RESERVE1:
- break;
- case MODE_SET_RESERVE2:
- cp = requests->requestvb->val.string;
- dh_tmpp = d2i_DHparams(NULL, (const unsigned char **) &cp,
- requests->requestvb->val_len);
- if ( !dh_tmpp) {
- netsnmp_set_request_error(reqinfo, requests, SNMP_ERR_WRONGVALUE);
- }
- if (cp - requests->requestvb->val.string !=
- requests->requestvb->val_len) {
- /* value too long; we didn't parse the whole thing */
- netsnmp_set_request_error(reqinfo, requests, SNMP_ERR_WRONGVALUE);
- DH_free(dh_tmpp);
- dh_tmpp = NULL;
- }
- break;
- case MODE_SET_FREE:
- case MODE_SET_COMMIT:
- DH_free(dh_tmpp);
- dh_tmpp = NULL;
- break;
- case MODE_SET_ACTION:
- {
- DH *tmpp;
- tmpp = dh_params;
- dh_params = dh_tmpp;
- dh_tmpp = tmpp;
- break;
- }
- case MODE_SET_UNDO:
- {
- DH_free(dh_params); /* free new value */
- dh_params = dh_tmpp; /* restore old value */
- dh_tmpp = NULL;
- break;
- }
- default:
- /*
- * we should never get here, so this is a really bad error
- */
- return SNMP_ERR_GENERR;
- }
- return SNMP_ERR_NOERROR;
- }