mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 16:31:24 +00:00
traceroute: cleanup preparing it for traceroute6. -17 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
11f3a8b7ed
commit
0d56568654
@ -211,6 +211,13 @@
|
||||
#include <netinet/udp.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <netinet/ip_icmp.h>
|
||||
#if ENABLE_FEATURE_IPV6
|
||||
# include <netinet/ip6.h>
|
||||
# include <netinet/icmp6.h>
|
||||
# ifndef SOL_IPV6
|
||||
# define SOL_IPV6 IPPROTO_IPV6
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#include "libbb.h"
|
||||
#include "inet_common.h"
|
||||
@ -222,7 +229,9 @@
|
||||
# define IPPROTO_IP 0
|
||||
#endif
|
||||
|
||||
/* Keep in sync with getopt32 call! */
|
||||
|
||||
#define OPT_STRING "FIlnrdvxt:i:m:p:q:s:w:z:f:" \
|
||||
IF_FEATURE_TRACEROUTE_SOURCE_ROUTE("g:")
|
||||
enum {
|
||||
OPT_DONT_FRAGMNT = (1 << 0), /* F */
|
||||
OPT_USE_ICMP = (1 << 1) * ENABLE_FEATURE_TRACEROUTE_USE_ICMP, /* I */
|
||||
@ -309,15 +318,15 @@ static int
|
||||
wait_for_reply(struct sockaddr_in *fromp)
|
||||
{
|
||||
struct pollfd pfd[1];
|
||||
int cc = 0;
|
||||
int read_len = 0;
|
||||
socklen_t fromlen = sizeof(*fromp);
|
||||
|
||||
pfd[0].fd = rcvsock;
|
||||
pfd[0].events = POLLIN;
|
||||
if (safe_poll(pfd, 1, waittime * 1000) > 0)
|
||||
cc = recvfrom(rcvsock, recv_pkt, sizeof(recv_pkt), 0,
|
||||
read_len = recvfrom(rcvsock, recv_pkt, sizeof(recv_pkt), 0,
|
||||
(struct sockaddr *)fromp, &fromlen);
|
||||
return cc;
|
||||
return read_len;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -417,8 +426,7 @@ send_probe(int seq, int ttl)
|
||||
len -= sizeof(*outudp);
|
||||
set_nport(dest_lsa, htons(port + seq));
|
||||
}
|
||||
res = xsendto(sndsock, out, len,
|
||||
(struct sockaddr *)&dest_lsa->u.sa, dest_lsa->len);
|
||||
res = xsendto(sndsock, out, len, &dest_lsa->u.sa, dest_lsa->len);
|
||||
if (res != len) {
|
||||
bb_info_msg("sent %d octets, ret=%d", len, res);
|
||||
}
|
||||
@ -447,11 +455,11 @@ pr_type(unsigned char t)
|
||||
#endif
|
||||
|
||||
#if !ENABLE_FEATURE_TRACEROUTE_VERBOSE
|
||||
#define packet_ok(cc, from, seq) \
|
||||
packet_ok(cc, seq)
|
||||
#define packet_ok(read_len, from, seq) \
|
||||
packet_ok(read_len, seq)
|
||||
#endif
|
||||
static int
|
||||
packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
packet_ok(int read_len, const struct sockaddr_in *from, int seq)
|
||||
{
|
||||
const struct icmp *icp;
|
||||
unsigned char type, code;
|
||||
@ -460,15 +468,15 @@ packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
|
||||
ip = (struct ip *) recv_pkt;
|
||||
hlen = ip->ip_hl << 2;
|
||||
if (cc < hlen + ICMP_MINLEN) {
|
||||
if (read_len < hlen + ICMP_MINLEN) {
|
||||
#if ENABLE_FEATURE_TRACEROUTE_VERBOSE
|
||||
if (verbose)
|
||||
printf("packet too short (%d bytes) from %s\n", cc,
|
||||
printf("packet too short (%d bytes) from %s\n", read_len,
|
||||
inet_ntoa(from->sin_addr));
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
cc -= hlen;
|
||||
read_len -= hlen;
|
||||
icp = (struct icmp *)(recv_pkt + hlen);
|
||||
type = icp->icmp_type;
|
||||
code = icp->icmp_code;
|
||||
@ -498,7 +506,7 @@ packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
}
|
||||
|
||||
hicmp = (struct icmp *)((unsigned char *)hip + hlen);
|
||||
if (hlen + SIZEOF_ICMP_HDR <= cc
|
||||
if (hlen + SIZEOF_ICMP_HDR <= read_len
|
||||
&& hip->ip_p == IPPROTO_ICMP
|
||||
&& hicmp->icmp_id == htons(ident)
|
||||
&& hicmp->icmp_seq == htons(seq)
|
||||
@ -507,7 +515,7 @@ packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
}
|
||||
} else {
|
||||
up = (struct udphdr *)((char *)hip + hlen);
|
||||
if (hlen + 12 <= cc
|
||||
if (hlen + 12 <= read_len
|
||||
&& hip->ip_p == IPPROTO_UDP
|
||||
// Off: since we do not form the entire IP packet,
|
||||
// but defer it to kernel, we can't set source port,
|
||||
@ -526,10 +534,10 @@ packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
|
||||
printf("\n%d bytes from %s to "
|
||||
"%s: icmp type %d (%s) code %d\n",
|
||||
cc, inet_ntoa(from->sin_addr),
|
||||
read_len, inet_ntoa(from->sin_addr),
|
||||
inet_ntoa(ip->ip_dst),
|
||||
type, pr_type(type), icp->icmp_code);
|
||||
for (i = 4; i < cc; i += sizeof(*lp))
|
||||
for (i = 4; i < read_len; i += sizeof(*lp))
|
||||
printf("%2d: x%8.8x\n", i, *lp++);
|
||||
}
|
||||
#endif
|
||||
@ -542,34 +550,39 @@ packet_ok(int cc, const struct sockaddr_in *from, int seq)
|
||||
* numeric value, otherwise try for symbolic name.
|
||||
*/
|
||||
static void
|
||||
print_inetname(const struct sockaddr_in *from)
|
||||
print_inetname(const struct sockaddr *from)
|
||||
{
|
||||
const char *ina;
|
||||
char *ina = xmalloc_sockaddr2dotted_noport(from);
|
||||
|
||||
ina = inet_ntoa(from->sin_addr);
|
||||
if (option_mask32 & OPT_ADDR_NUM)
|
||||
if (option_mask32 & OPT_ADDR_NUM) {
|
||||
printf(" %s", ina);
|
||||
else {
|
||||
} else {
|
||||
char *n = NULL;
|
||||
if (from->sin_addr.s_addr != INADDR_ANY)
|
||||
|
||||
if (from->sa_family != AF_INET
|
||||
|| ((struct sockaddr_in*)from)->sin_addr.s_addr != INADDR_ANY
|
||||
) {
|
||||
/* Try to reverse resolve if it is not 0.0.0.0 */
|
||||
n = xmalloc_sockaddr2host_noport((struct sockaddr*)from);
|
||||
}
|
||||
printf(" %s (%s)", (n ? n : ina), ina);
|
||||
free(n);
|
||||
}
|
||||
free(ina);
|
||||
}
|
||||
|
||||
static void
|
||||
print(int cc, const struct sockaddr_in *from)
|
||||
print(int read_len, const struct sockaddr_in *from)
|
||||
{
|
||||
print_inetname(from);
|
||||
print_inetname((const struct sockaddr*)from);
|
||||
if (verbose) {
|
||||
const struct ip *ip;
|
||||
int hlen;
|
||||
|
||||
ip = (struct ip *) recv_pkt;
|
||||
hlen = ip->ip_hl << 2;
|
||||
cc -= hlen;
|
||||
printf(" %d bytes to %s", cc, inet_ntoa(ip->ip_dst));
|
||||
read_len -= hlen;
|
||||
printf(" %d bytes to %s", read_len, inet_ntoa(ip->ip_dst));
|
||||
}
|
||||
}
|
||||
|
||||
@ -581,17 +594,16 @@ print_delta_ms(unsigned t1p, unsigned t2p)
|
||||
}
|
||||
|
||||
/*
|
||||
Usage: [-dFIlnrvx] [-g gateway] [-i iface] [-f first_ttl]
|
||||
[-m max_ttl] [ -p port] [-q nqueries] [-s src_addr] [-t tos]
|
||||
[-w waittime] [-z pausemsecs] host [packetlen]"
|
||||
*/
|
||||
* Usage: [-dFIlnrvx] [-g gateway] [-i iface] [-f first_ttl]
|
||||
* [-m max_ttl] [ -p port] [-q nqueries] [-s src_addr] [-t tos]
|
||||
* [-w waittime] [-z pausemsecs] host [packetlen]"
|
||||
*/
|
||||
|
||||
int traceroute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int traceroute_main(int argc, char **argv)
|
||||
int traceroute_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
int i;
|
||||
int minpacket;
|
||||
int ttl, i;
|
||||
int seq = 0;
|
||||
int tos = 0;
|
||||
int max_ttl = 30;
|
||||
int nprobes = 3;
|
||||
@ -611,19 +623,14 @@ int traceroute_main(int argc, char **argv)
|
||||
llist_t *source_route_list = NULL;
|
||||
int lsrr = 0;
|
||||
#endif
|
||||
int ttl;
|
||||
int seq;
|
||||
|
||||
INIT_G();
|
||||
|
||||
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
|
||||
opt_complementary = "x-x:g::";
|
||||
#else
|
||||
opt_complementary = "x-x";
|
||||
#endif
|
||||
|
||||
op = getopt32(argv, "FIlnrdvxt:i:m:p:q:s:w:z:f:"
|
||||
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
|
||||
"g:"
|
||||
#endif
|
||||
/* minimum 1 arg */
|
||||
opt_complementary = "-1:x-x" IF_FEATURE_TRACEROUTE_SOURCE_ROUTE(":g::");
|
||||
op = getopt32(argv, OPT_STRING
|
||||
, &tos_str, &device, &max_ttl_str, &port_str, &nprobes_str
|
||||
, &source, &waittime_str, &pausemsecs_str, &first_ttl_str
|
||||
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
|
||||
@ -681,17 +688,9 @@ int traceroute_main(int argc, char **argv)
|
||||
|
||||
/* Process destination and optional packet size */
|
||||
argv += optind;
|
||||
argc -= optind;
|
||||
switch (argc) {
|
||||
case 2:
|
||||
if (argv[1])
|
||||
packlen = xatoul_range(argv[1], minpacket, 32 * 1024);
|
||||
/* Fall through */
|
||||
case 1:
|
||||
dest_lsa = xhost2sockaddr(argv[0], port);
|
||||
break;
|
||||
default:
|
||||
bb_show_usage();
|
||||
}
|
||||
|
||||
/* Ensure the socket fds won't be 0, 1 or 2 */
|
||||
bb_sanitize_stdio();
|
||||
@ -710,8 +709,7 @@ int traceroute_main(int argc, char **argv)
|
||||
xmove_fd(xsocket(AF_INET, SOCK_RAW, IPPROTO_ICMP), sndsock);
|
||||
else
|
||||
xmove_fd(xsocket(AF_INET, SOCK_DGRAM, 0), sndsock);
|
||||
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
|
||||
#if defined(IP_OPTIONS)
|
||||
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE && defined IP_OPTIONS
|
||||
if (lsrr > 0) {
|
||||
unsigned char optlist[MAX_IPOPTLEN];
|
||||
|
||||
@ -734,8 +732,7 @@ int traceroute_main(int argc, char **argv)
|
||||
bb_perror_msg_and_die("IP_OPTIONS");
|
||||
}
|
||||
}
|
||||
#endif /* IP_OPTIONS */
|
||||
#endif /* CONFIG_FEATURE_TRACEROUTE_SOURCE_ROUTE */
|
||||
#endif
|
||||
#ifdef SO_SNDBUF
|
||||
if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, &packlen, sizeof(packlen)) < 0) {
|
||||
bb_perror_msg_and_die("SO_SNDBUF");
|
||||
@ -796,6 +793,7 @@ int traceroute_main(int argc, char **argv)
|
||||
printf(" from %s", source);
|
||||
printf(", %d hops max, %d byte packets\n", max_ttl, packlen);
|
||||
|
||||
seq = 0;
|
||||
for (ttl = first_ttl; ttl <= max_ttl; ++ttl) {
|
||||
//TODO: make it protocol agnostic (get rid of sockaddr_in)
|
||||
struct sockaddr_in from;
|
||||
@ -808,7 +806,7 @@ int traceroute_main(int argc, char **argv)
|
||||
|
||||
printf("%2d", ttl);
|
||||
for (probe = 0; probe < nprobes; ++probe) {
|
||||
int cc;
|
||||
int read_len;
|
||||
unsigned t1;
|
||||
unsigned t2;
|
||||
struct ip *ip;
|
||||
@ -819,18 +817,18 @@ int traceroute_main(int argc, char **argv)
|
||||
|
||||
t1 = monotonic_us();
|
||||
send_probe(++seq, ttl);
|
||||
first = 0;
|
||||
|
||||
while ((cc = wait_for_reply(&from)) != 0) {
|
||||
first = 0;
|
||||
while ((read_len = wait_for_reply(&from)) != 0) {
|
||||
t2 = monotonic_us();
|
||||
i = packet_ok(cc, &from, seq);
|
||||
i = packet_ok(read_len, &from, seq);
|
||||
/* Skip short packet */
|
||||
if (i == 0)
|
||||
continue;
|
||||
if (!gotlastaddr
|
||||
|| from.sin_addr.s_addr != lastaddr
|
||||
) {
|
||||
print(cc, &from);
|
||||
print(read_len, &from);
|
||||
lastaddr = from.sin_addr.s_addr;
|
||||
gotlastaddr = 1;
|
||||
}
|
||||
@ -912,7 +910,8 @@ int traceroute_main(int argc, char **argv)
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (cc == 0)
|
||||
/* there was no packet at all? */
|
||||
if (read_len == 0)
|
||||
printf(" *");
|
||||
}
|
||||
bb_putchar('\n');
|
||||
@ -922,5 +921,6 @@ int traceroute_main(int argc, char **argv)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user