/*
* fsm_input - Input packet.
*/
void
fsm_input(fsm *f, u_char *inpacket, int l)
{
u_char *inp = inpacket;
u_char code, id;
int len;
/*
* Parse header (code, id and length).
* If packet too short, drop it.
*/
if (l < HEADERLEN) {
FSMDEBUG(LOG_WARNING, ("fsm_input(%x): Rcvd short header.\n",
f->protocol));
return;
}
GETCHAR(code, inp);
GETCHAR(id, inp);
GETSHORT(len, inp);
if (len < HEADERLEN) {
FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd illegal length.\n",
f->protocol));
return;
}
if (len > l) {
FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd short packet.\n",
f->protocol));
return;
}
len -= HEADERLEN; /* subtract header length */
if( f->state == LS_INITIAL || f->state == LS_STARTING ) {
FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd packet in state %d (%s).\n",
f->protocol, f->state, ppperr_strerr[f->state]));
return;
}
FSMDEBUG(LOG_INFO, ("fsm_input(%s):%d,%d,%d\n", PROTO_NAME(f), code, id, l));
/*
* Action depends on code.
*/
switch (code) {
case CONFREQ:
fsm_rconfreq(f, id, inp, len);
break;
case CONFACK:
fsm_rconfack(f, id, inp, len);
break;
case CONFNAK:
case CONFREJ:
fsm_rconfnakrej(f, code, id, inp, len);
break;
case TERMREQ:
fsm_rtermreq(f, id, inp, len);
break;
case TERMACK:
fsm_rtermack(f);
break;
case CODEREJ:
fsm_rcoderej(f, inp, len);
break;
default:
FSMDEBUG(LOG_INFO, ("fsm_input(%s): default: \n", PROTO_NAME(f)));
if( !f->callbacks->extcode ||
!(*f->callbacks->extcode)(f, code, id, inp, len) ) {
fsm_sdata(f, CODEREJ, ++f->id, inpacket, len + HEADERLEN);
}
break;
}
}
/*
* fsm_input - Input packet.
*/
void fsm_input(fsm *f, u_char *inpacket, int l) {
u_char *inp;
u_char code, id;
int len;
/*
* Parse header (code, id and length).
* If packet too short, drop it.
*/
inp = inpacket;
if (l < HEADERLEN) {
FSMDEBUG(("fsm_input(%x): Rcvd short header.", f->protocol));
return;
}
GETCHAR(code, inp);
GETCHAR(id, inp);
GETSHORT(len, inp);
if (len < HEADERLEN) {
FSMDEBUG(("fsm_input(%x): Rcvd illegal length.", f->protocol));
return;
}
if (len > l) {
FSMDEBUG(("fsm_input(%x): Rcvd short packet.", f->protocol));
return;
}
len -= HEADERLEN; /* subtract header length */
if( f->state == PPP_FSM_INITIAL || f->state == PPP_FSM_STARTING ){
FSMDEBUG(("fsm_input(%x): Rcvd packet in state %d.",
f->protocol, f->state));
return;
}
/*
* Action depends on code.
*/
switch (code) {
case CONFREQ:
fsm_rconfreq(f, id, inp, len);
break;
case CONFACK:
fsm_rconfack(f, id, inp, len);
break;
case CONFNAK:
case CONFREJ:
fsm_rconfnakrej(f, code, id, inp, len);
break;
case TERMREQ:
fsm_rtermreq(f, id, inp, len);
break;
case TERMACK:
fsm_rtermack(f);
break;
case CODEREJ:
fsm_rcoderej(f, inp, len);
break;
default:
if( !f->callbacks->extcode
|| !(*f->callbacks->extcode)(f, code, id, inp, len) )
fsm_sdata(f, CODEREJ, ++f->id, inpacket, len + HEADERLEN);
break;
}
}
