Hello, all!
Wes Hardaker wrote:
> I'm not sure how I think about removing the forward encoding... I'll
> have to think about it. One ramification is that if we remove the
> generic BER routines, there could be applications that still make use of
> the forwarding encoding ones (why they're using us for those functions
> is a good question, however).
>
> (I was the one that designed the reverse encoding because I thought the
> forwarding encoding wasn't the best way forward, but having said that
> I'm still nervous about removing the forward. But I couldn't tell you
> why :-)
The forward asn encoding is not finished.
It doesn't support memory reallocation.
If someone query snmpset with 128 variables,
there can appear problem - buffer overflow.
Sequence:
snmp_synch_response() in snmp_client.c called from snmpset.c ->
snmp_synch_response_cb() in snmp_client.c ->
snmp_send() in snmp_api.c ->
snmp_async_send() in snmp_api.c ->
snmp_sess_async_send() in snmp_api.c ->
_sess_async_send() in snmp_api.c :
...
/*
* check to see if we need to create a v3 user from the session info
*/
if (create_user_from_session(session) != SNMPERR_SUCCESS) {
session->s_snmp_errno = SNMPERR_UNKNOWN_USER_NAME; /* XX?? */
DEBUGMSGTL(("snmp_api",
"snmp_send(): failed(2) to create a new user from
session\n"));
return 0;
}
---------------------------------- 2048 - size of buffer can be small.
if ((pktbuf = (u_char *)malloc(2048)) == NULL) {
DEBUGMSGTL(("sess_async_send",
"couldn't malloc initial packet buffer\n"));
session->s_snmp_errno = SNMPERR_MALLOC;
return 0;
} else {
-------------------- size is small...
pktbuf_len = 2048;
}
#if TEMPORARILY_DISABLED
...
Aleksandr Lomanov
ICQ: 170411676
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