static int warts_trace_hop_read(scamper_trace_hop_t *hop, warts_state_t *state,
warts_addrtable_t *table,
const uint8_t *buf,uint32_t *off,uint32_t len)
{
warts_param_reader_t handlers[] = {
{&hop->hop_addr, (wpr_t)extract_addr_gid, state},
{&hop->hop_probe_ttl, (wpr_t)extract_byte, NULL},
{&hop->hop_reply_ttl, (wpr_t)extract_byte, NULL},
{&hop->hop_flags, (wpr_t)extract_byte, NULL},
{&hop->hop_probe_id, (wpr_t)warts_trace_hop_read_probe_id, NULL},
{&hop->hop_rtt, (wpr_t)extract_rtt, NULL},
{hop, (wpr_t)warts_trace_hop_read_icmp_tc, NULL},
{&hop->hop_probe_size, (wpr_t)extract_uint16, NULL},
{&hop->hop_reply_size, (wpr_t)extract_uint16, NULL},
{&hop->hop_reply_ipid, (wpr_t)extract_uint16, NULL},
{&hop->hop_reply_tos, (wpr_t)extract_byte, NULL},
{&hop->hop_icmp_nhmtu, (wpr_t)extract_uint16, NULL},
{&hop->hop_icmp_q_ipl, (wpr_t)extract_uint16, NULL},
{&hop->hop_icmp_q_ttl, (wpr_t)extract_byte, NULL},
{&hop->hop_tcp_flags, (wpr_t)extract_byte, NULL},
{&hop->hop_icmp_q_tos, (wpr_t)extract_byte, NULL},
{hop, (wpr_t)warts_trace_hop_read_icmpext, NULL},
{&hop->hop_addr, (wpr_t)extract_addr, table},
{&hop->hop_tx, (wpr_t)extract_timeval, NULL},
};
const int handler_cnt = sizeof(handlers)/sizeof(warts_param_reader_t);
uint32_t o = *off;
int rc;
if((rc = warts_params_read(buf, off, len, handlers, handler_cnt)) != 0)
return rc;
if(hop->hop_addr == NULL)
return -1;
if(hop->hop_probe_ttl == 0)
return -1;
if(SCAMPER_TRACE_HOP_IS_ICMP_Q(hop))
{
if(flag_isset(&buf[o], WARTS_TRACE_HOP_Q_IPTTL) == 0)
hop->hop_icmp_q_ttl = 1;
if(flag_isset(&buf[o], WARTS_TRACE_HOP_Q_IPLEN) == 0)
hop->hop_icmp_q_ipl = hop->hop_probe_size;
}
return 0;
}
static void warts_trace_hop_params(const scamper_trace_t *trace,
const scamper_trace_hop_t *hop,
warts_addrtable_t *table, uint8_t *flags,
uint16_t *flags_len, uint16_t *params_len)
{
scamper_icmpext_t *ie;
const warts_var_t *var;
int i, max_id = 0;
/* unset all the flags possible */
memset(flags, 0, hop_vars_mfb);
*params_len = 0;
for(i=0; i<sizeof(hop_vars)/sizeof(warts_var_t); i++)
{
var = &hop_vars[i];
/* not used any more */
if(var->id == WARTS_TRACE_HOP_ADDR_GID)
continue;
if(var->id == WARTS_TRACE_HOP_ADDR)
{
if(hop->hop_addr == NULL)
continue;
}
else if(var->id == WARTS_TRACE_HOP_TCP_FLAGS)
{
if(SCAMPER_TRACE_HOP_IS_TCP(hop) == 0)
continue;
}
else if(var->id == WARTS_TRACE_HOP_ICMP_TC)
{
if(SCAMPER_TRACE_HOP_IS_ICMP(hop) == 0)
continue;
}
else if(var->id == WARTS_TRACE_HOP_Q_IPLEN)
{
if(SCAMPER_TRACE_HOP_IS_ICMP_Q(hop) == 0)
continue;
if(hop->hop_icmp_q_ipl == trace->probe_size)
continue;
}
else if(var->id == WARTS_TRACE_HOP_Q_IPTTL)
{
if(SCAMPER_TRACE_HOP_IS_ICMP_Q(hop) == 0)
continue;
if(hop->hop_icmp_q_ttl == 1)
continue;
}
else if(var->id == WARTS_TRACE_HOP_Q_IPTOS)
{
if(SCAMPER_TRACE_HOP_IS_ICMP_Q(hop) == 0)
continue;
if(hop->hop_addr->type != SCAMPER_ADDR_TYPE_IPV4)
continue;
}
else if(var->id == WARTS_TRACE_HOP_NHMTU)
{
if(SCAMPER_TRACE_HOP_IS_ICMP_PTB(hop) == 0)
continue;
}
else if(var->id == WARTS_TRACE_HOP_ICMPEXT)
{
if(hop->hop_icmpext == NULL)
continue;
}
else if(var->id == WARTS_TRACE_HOP_REPLY_IPID)
{
if(hop->hop_reply_ipid == 0)
continue;
}
else if(var->id == WARTS_TRACE_HOP_TX)
{
if(hop->hop_tx.tv_sec == 0)
continue;
}
flag_set(flags, var->id, &max_id);
if(var->id == WARTS_TRACE_HOP_ADDR)
{
*params_len += warts_addr_size(table, hop->hop_addr);
}
else if(var->id == WARTS_TRACE_HOP_ICMPEXT)
{
*params_len += 2;
for(ie = hop->hop_icmpext; ie != NULL; ie = ie->ie_next)
*params_len += (2 + 1 + 1 + ie->ie_dl);
}
else
{
assert(var->size >= 0);
*params_len += var->size;
}
}
*flags_len = fold_flags(flags, max_id);
return;
}
static char *hop_tostr(const scamper_trace_t *trace,
scamper_trace_hop_t *hop) {
char buf[512], tmp[128];
size_t off = 0;
string_concat(buf, sizeof(buf), &off, "SCAMPER.%s", SCAMPER_VERSION);
/* by DEFAULT 0; but can be changed using -U, perhaps a SK unit id */
string_concat(buf, sizeof(buf), &off, ";%u", trace->userid);
string_concat(buf, sizeof(buf), &off, ";%u", trace->start.tv_sec);
/*strftime(tmp, sizeof(tmp), "%Y-%m-%d %H:%M:%S", localtime(&tt));*/
/*string_concat(buf, sizeof(buf), &off,*/
/*", \"start\":{\"sec\":%u, \"usec\":%u, \"ftime\":\"%s\"}",*/
/*trace->start.tv_sec, trace->start.tv_usec, tmp);*/
string_concat(buf, sizeof(buf), &off, ";%s", scamper_addr_tostr(trace->src,
tmp, sizeof(tmp)));
string_concat(buf, sizeof(buf), &off, ";%s", scamper_addr_tostr(trace->dst,
tmp, sizeof(tmp)));
const char *ptr;
if((ptr = scamper_trace_type_tostr(trace)) != NULL)
string_concat(buf, sizeof(buf), &off, ";%s", ptr);
else
string_concat(buf, sizeof(buf), &off, ";%u", trace->type);
/*if(SCAMPER_TRACE_TYPE_IS_UDP(trace) || SCAMPER_TRACE_TYPE_IS_TCP(trace))*/
/*string_concat(buf, sizeof(buf), &off, ";%u;%u", trace->sport,*/
/*trace->dport);*/
/*else if(trace->flags & SCAMPER_TRACE_FLAG_ICMPCSUMDP)*/
/*string_concat(buf, sizeof(buf), &off, ";%u", trace->dport);*/
string_concat(buf, sizeof(buf), &off, ";%s",
stop_reason_tostr(trace->stop_reason, tmp, sizeof(tmp)));
/*string_concat(buf, sizeof(buf), &off, "%u", trace->stop_data);*/
string_concat(buf, sizeof(buf), &off, ";%u", hop->hop_probe_ttl);
string_concat(buf, sizeof(buf), &off, ";%s",
scamper_addr_tostr(hop->hop_addr, tmp, sizeof(tmp)));
/*string_concat(buf, sizeof(buf), &off, ";%u;%u", hop->hop_probe_id,*/
/*hop->hop_probe_size);*/
string_concat(buf, sizeof(buf), &off, ";%s", timeval_tostr(&hop->hop_rtt,
tmp, sizeof(tmp)));
/*string_concat(buf, sizeof(buf), &off, ";%u;%u;%u", hop->hop_reply_ttl,*/
/*hop->hop_reply_tos, hop->hop_reply_size);*/
/*string_concat(buf, sizeof(buf), &off, ";%u", hop->hop_reply_ipid);*/
if(SCAMPER_TRACE_HOP_IS_ICMP(hop)) {
/*string_concat(buf, sizeof(buf), &off, ";%u;%u", hop->hop_icmp_type,*/
/*hop->hop_icmp_code);*/
if(SCAMPER_TRACE_HOP_IS_ICMP_Q(hop)) {
/*string_concat(buf, sizeof(buf), &off, ";%u;%u", hop->hop_icmp_q_ttl,*/
/*hop->hop_icmp_q_ipl);*/
/*if(SCAMPER_ADDR_TYPE_IS_IPV4(hop->hop_addr))*/
/*string_concat(buf, sizeof(buf), &off, ";%u", hop->hop_icmp_q_tos);*/
}
/*if(SCAMPER_TRACE_HOP_IS_ICMP_PTB(hop))*/
/*string_concat(buf, sizeof(buf), &off, "%u", hop->hop_icmp_nhmtu);*/
}
else {
/*string_concat(buf, sizeof(buf), &off, ";%u", hop->hop_tcp_flags); */
}
/*string_concat(buf, sizeof(buf), &off,*/
/*", \"hop_count\":%u, \"attempts\":%u, \"hoplimit\":%u",*/
/*trace->hop_count, trace->attempts, trace->hoplimit);*/
/*string_concat(buf, sizeof(buf), &off,*/
/*", \"firsthop\":%u, \"wait\":%u, \"wait_probe\":%u",*/
/*trace->firsthop, trace->wait, trace->wait_probe);*/
/*string_concat(buf, sizeof(buf), &off, ", \"tos\":%u, \"probe_size\":%u",*/
/*trace->tos, trace->probe_size);*/
string_concat(buf, sizeof(buf), &off, "\n", NULL);
return strdup(buf);
}
