loic/net-tools
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

refactor(error): improve output error code

Browse source
This commit is contained in:
lohhiiccc 2026-03-18 16:57:54 +01:00
parent dd6bafe132
commit 07588298cd
1 changed files with 40 additions and 54 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

92
src/ping/output/error.c
View file

@ -8,10 +8,27 @@
#include "icmp_types.h"
#include "internal/ping/output.h"
// TODO: CLEAN THIS FILE !
static const struct error_entry
{
uint8_t type;
uint8_t code;
const char *msg;
} g_error_table[] = {
{ ICMP_TYPE_TIME_EXCEEDED, ICMP_CODE_TTL_EXCEEDED,
"Time to live exceeded" },
{ ICMP_TYPE_TIME_EXCEEDED, ICMP_CODE_FRAG_REASM_EXCEEDED,
"Frag reassembly time exceeded" },
{ ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_NET_UNREACHABLE,
"Destination Net Unreachable" },
{ ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_HOST_UNREACHABLE,
"Destination Host Unreachable" },
{ ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_PROTOCOL_UNREACHABLE,
"Destination Protocol Unreachable" },
{ ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_PORT_UNREACHABLE,
"Destination Port Unreachable" },
};
/* Forward declarations */
static void output_frag_needed(const char *from, uint16_t seq,
uint16_t next_mtu);
static const char *error_msg_for(const icmp_reply_t *reply);
/* -------------------- */
@ -23,64 +40,33 @@ ping_output_error(const icmp_reply_t *reply,
char from_str[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &reply->from, from_str, sizeof(from_str));
if (ICMP_TYPE_DEST_UNREACHABLE == reply->type
&& ICMP_CODE_FRAG_NEEDED == reply->code)
output_frag_needed(from_str, seq, offending->next_mtu);
if (reply->type == ICMP_TYPE_DEST_UNREACHABLE
&& reply->code == ICMP_CODE_FRAG_NEEDED)
{
if (offending->next_mtu > 0)
dprintf(STDERR_FILENO,
"From %s: icmp_seq=%u "
"Frag needed and DF set (mtu = %u)\n",
from_str, (unsigned int)seq,
(unsigned int)offending->next_mtu);
else
dprintf(STDERR_FILENO,
"From %s: icmp_seq=%u "
"Frag needed and DF set (mtu unknown)\n",
from_str, (unsigned int)seq);
}
else
dprintf(STDERR_FILENO, "From %s: icmp_seq=%u %s\n",
from_str, (unsigned int)seq, error_msg_for(reply));
}
static void
output_frag_needed(const char *from, uint16_t seq, uint16_t next_mtu)
{
if (next_mtu > 0)
dprintf(STDERR_FILENO,
"From %s: icmp_seq=%u Frag needed and DF set (mtu = %u)\n",
from, (unsigned int)seq, (unsigned int)next_mtu);
else
dprintf(STDERR_FILENO,
"From %s: icmp_seq=%u Frag needed and DF set (mtu unknown)\n",
from, (unsigned int)seq);
from_str, (unsigned int)seq,
error_msg_for(reply));
}
static const char *
error_msg_for(const icmp_reply_t *reply)
{
static const struct s_error_entry
{
uint8_t type;
uint8_t code;
const char *msg;
} error_table[] = {
{
ICMP_TYPE_TIME_EXCEEDED, ICMP_CODE_TTL_EXCEEDED,
"Time to live exceeded"
},
{
ICMP_TYPE_TIME_EXCEEDED, ICMP_CODE_FRAG_REASM_EXCEEDED,
"Frag reassembly time exceeded"
},
{
ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_NET_UNREACHABLE,
"Destination Net Unreachable"
},
{
ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_HOST_UNREACHABLE,
"Destination Host Unreachable"
},
{
ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_PROTOCOL_UNREACHABLE,
"Destination Protocol Unreachable"
},
{
ICMP_TYPE_DEST_UNREACHABLE, ICMP_CODE_PORT_UNREACHABLE,
"Destination Port Unreachable"
},
};
const struct s_error_entry *entry;
const struct error_entry *entry;
STATIC_ARRAY_FOREACH(error_table, entry)
STATIC_ARRAY_FOREACH(g_error_table, entry)
{
if (entry->type == reply->type && entry->code == reply->code)
return (entry->msg);