Hi.
I want to add the source ip address to the log when
authentication failed.
In more concrete terms, the 2480th line in the
usm_process_in_msg() function in snmpusm.c outputs the log
message like below.
# I'm using the net-snmp-5.6.1.1 on NetBSD.
2260 int
2261 usm_process_in_msg(int msgProcModel, /* (UNUSED) */
:
2465 /*
2466 * Check the authentication credentials of the message.
2467 */
2468 if (secLevel == SNMP_SEC_LEVEL_AUTHNOPRIV
2469 || secLevel == SNMP_SEC_LEVEL_AUTHPRIV) {
2470 if (sc_check_keyed_hash(user->authProtocol, user->authProtoc...
2471 user->authKey, user->authKeyLen,
2472 wholeMsg, wholeMsgLen,
2473 signature, signature_length)
2474 != SNMP_ERR_NOERROR) {
2475 DEBUGMSGTL(("usm", "Verification failed.\n"));
2476 if (snmp_increment_statistic(STAT_USMSTATSWRONGDIGESTS) ...
2477 DEBUGMSGTL(("usm", "%s\n",
2478 "Failed to increment statistic."));
2479 }
2480 snmp_log(LOG_WARNING, "Authentication failed for %s\n",
2481 user->name);
2482 return SNMPERR_USM_AUTHENTICATIONFAILURE;
2483 }
2484
With the use of `netsnmp_session *sess', the parameter of
usm_process_in_msg(), I tried but it didn't work as
sess->peername is NULL.
So I want to use the value of sess->peername at that point,
where should sess->peernaem be prepared?
Or, does anyone have the other idea?
I will appreciate your frank comments.
Regards,
--
Kuroishi Mitsuo
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