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Diffstat (limited to 'networking/traceroute.c')
-rw-r--r--networking/traceroute.c126
1 files changed, 63 insertions, 63 deletions
diff --git a/networking/traceroute.c b/networking/traceroute.c
index fa45db9..d36ddee 100644
--- a/networking/traceroute.c
+++ b/networking/traceroute.c
@@ -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();
- }
+ dest_lsa = xhost2sockaddr(argv[0], port);
/* 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;
}
generated by cgit v1.1 at 2024-12-27 04:59:16 +0000