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/*
* FlexNet internode communication dump
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "listen.h"
/*
* This was hacked by Thomas Sailer, t.sailer@alumni.ethz.ch, HB9JNX/AE4WA, with
* some bits stolen from Dieter Deyke (Wampes), such as these defines :-)
*/
#define FLEX_INIT '0' /* Link initialization */
#define FLEX_RPRT '1' /* Poll answer */
#define FLEX_POLL '2' /* Poll */
#define FLEX_ROUT '3' /* Routing information */
#define FLEX_QURY '6' /* Path query */
#define FLEX_RSLT '7' /* Query result */
static int flx_get_number(unsigned char **data, int *length)
{
int l = *length;
unsigned char *d = *data;
int res = 0;
if (l <= 0 || *d < '0' || *d > '9')
return -1;
while (l > 0 && *d >= '0' && *d <= '9') {
res = res * 10 + (*d++) - '0';
l--;
}
*data = d;
*length = l;
return res;
}
static void dump_end(unsigned char *data, int length)
{
if (length <= 0)
return;
for (; length > 0; length--, data++)
lprintf(T_FLEXNET, " %02x", *data);
lprintf(T_FLEXNET, "\n");
}
void flexnet_dump(unsigned char *data, int length, int hexdump)
{
int i;
int hopcnt, qsonr;
unsigned char *cp;
lprintf(T_PROTOCOL, "FlexNet:");
if (length < 1) {
lprintf(T_ERROR, " bad packet\n");
return;
}
switch (data[0]) {
default:
lprintf(T_ERROR, " unknown packet type\n");
data_dump(data, length, hexdump);
return;
case FLEX_INIT:
if (length < 2) {
lprintf(T_ERROR, " bad packet\n");
dump_end(data + 1, length - 1);
return;
}
lprintf(T_FLEXNET, " Link setup - max SSID %d ",
data[1] & 0xf);
dump_end(data + 1, length - 1);
return;
case FLEX_RPRT:
lprintf(T_FLEXNET, " Poll response -");
data++;
length--;
i = flx_get_number(&data, &length);
data++;
length--;
if (i < 0)
goto too_short;
lprintf(T_FLEXNET, " delay: %d\n", i);
dump_end(data, length);
return;
case FLEX_POLL:
lprintf(T_FLEXNET, " Poll\n");
return;
case FLEX_ROUT:
data++;
length--;
lprintf(T_FLEXNET, " Routing\n");
while (length > 0) {
if (isdigit(*data) || isupper(*data)) {
if (length < 10)
goto too_short;
lprintf(T_FLEXNET, " %.6s %2d-%2d ", data,
data[6] - '0', data[7] - '0');
data += 8;
length -= 8;
i = flx_get_number(&data, &length);
data++;
length--;
if (!i)
lprintf(T_FLEXNET, "link down\n");
else
lprintf(T_FLEXNET, "delay: %d\n",
i);
} else {
if (*data == '+')
lprintf(T_FLEXNET,
" Request token\n");
else if (*data == '-')
lprintf(T_FLEXNET,
" Release token\n");
else if (*data != '\r')
lprintf(T_FLEXNET,
" invalid char: %02x\n",
*data);
data++;
length--;
}
}
return;
case FLEX_QURY:
case FLEX_RSLT:
lprintf(T_FLEXNET, " Route query");
if (*data == FLEX_RSLT)
lprintf(T_FLEXNET, " response");
if (length < 2)
goto too_short;
hopcnt = data[1] - ' ';
data += 2;
length -= 2;
qsonr = flx_get_number(&data, &length);
data++;
length--;
lprintf(T_FLEXNET, " - hop count: %d QSO number: %d\n",
hopcnt, qsonr);
cp = memchr(data, '\r', length);
if (cp)
*cp = 0;
lprintf(T_FLEXNET, " data\n");
return;
}
too_short:
lprintf(T_ERROR, " packet too short\n");
dump_end(data, length);
}
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