* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
+ * ''This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * THIS SOFTWARE IS PROVIDED ''AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
* -- Van Jacobson (van@ee.lbl.gov)
* Tue Dec 20 03:50:13 PST 1988
*/
+//config:config TRACEROUTE
+//config: bool "traceroute (11 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: Utility to trace the route of IP packets.
+//config:
+//config:config TRACEROUTE6
+//config: bool "traceroute6 (12 kb)"
+//config: default y
+//config: depends on FEATURE_IPV6
+//config: help
+//config: Utility to trace the route of IPv6 packets.
+//config:
+//config:config FEATURE_TRACEROUTE_VERBOSE
+//config: bool "Enable verbose output"
+//config: default y
+//config: depends on TRACEROUTE || TRACEROUTE6
+//config: help
+//config: Add some verbosity to traceroute. This includes among other things
+//config: hostnames and ICMP response types.
+//config:
+//config:config FEATURE_TRACEROUTE_USE_ICMP
+//config: bool "Enable -I option (use ICMP instead of UDP)"
+//config: default y
+//config: depends on TRACEROUTE || TRACEROUTE6
+
+/* Needs socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), therefore BB_SUID_MAYBE: */
+//applet:IF_TRACEROUTE(APPLET(traceroute, BB_DIR_USR_BIN, BB_SUID_MAYBE))
+//applet:IF_TRACEROUTE6(APPLET(traceroute6, BB_DIR_USR_BIN, BB_SUID_MAYBE))
+
+//kbuild:lib-$(CONFIG_TRACEROUTE) += traceroute.o
+//kbuild:lib-$(CONFIG_TRACEROUTE6) += traceroute.o
//usage:#define traceroute_trivial_usage
//usage: "[-"IF_TRACEROUTE6("46")"FIlnrv] [-f 1ST_TTL] [-m MAXTTL] [-q PROBES] [-p PORT]\n"
-//usage: " [-t TOS] [-w WAIT_SEC]"
-//usage: IF_FEATURE_TRACEROUTE_SOURCE_ROUTE(" [-g GATEWAY]")" [-s SRC_IP] [-i IFACE]\n"
+//usage: " [-t TOS] [-w WAIT_SEC] [-s SRC_IP] [-i IFACE]\n"
//usage: " [-z PAUSE_MSEC] HOST [BYTES]"
//usage:#define traceroute_full_usage "\n\n"
//usage: "Trace the route to HOST\n"
# ifndef SOL_IPV6
# define SOL_IPV6 IPPROTO_IPV6
# endif
+# if defined(IPV6_PKTINFO) && !defined(IPV6_RECVPKTINFO)
+# define IPV6_RECVPKTINFO IPV6_PKTINFO
+# endif
#endif
#include "libbb.h"
# define IPPROTO_IP 0
#endif
+/* Some operating systems, like GNU/Hurd, don't define SOL_RAW, but do have
+ * IPPROTO_RAW. Since the IPPROTO definitions are also valid to use for
+ * setsockopt (and take the same value as their corresponding SOL definitions,
+ * if they exist), we can just fall back on IPPROTO_RAW. */
+#ifndef SOL_RAW
+# define SOL_RAW IPPROTO_RAW
+#endif
+
#define OPT_STRING \
"FIlnrdvxt:i:m:p:q:s:w:z:f:" \
- IF_FEATURE_TRACEROUTE_SOURCE_ROUTE("g:*") \
"4" IF_TRACEROUTE6("6")
enum {
OPT_DONT_FRAGMNT = (1 << 0), /* F */
OPT_WAITTIME = (1 << 14), /* w */
OPT_PAUSE_MS = (1 << 15), /* z */
OPT_FIRST_TTL = (1 << 16), /* f */
- OPT_SOURCE_ROUTE = (1 << 17) * ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE, /* g */
- OPT_IPV4 = (1 << (17+ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE)), /* 4 */
- OPT_IPV6 = (1 << (18+ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE)) * ENABLE_TRACEROUTE6, /* 6 */
+ OPT_IPV4 = (1 << 17), /* 4 */
+ OPT_IPV6 = (1 << 18) * ENABLE_TRACEROUTE6, /* 6 */
};
#define verbose (option_mask32 & OPT_VERBOSE)
#endif
struct globals {
+ /* Pointer to entire malloced IP packet, "packlen" bytes long: */
struct ip *outip;
+ /* Pointer to ICMP or UDP payload (not header): */
struct outdata_t *outdata;
+
len_and_sockaddr *dest_lsa;
int packlen; /* total length of packet */
int pmtu; /* Path MTU Discovery (RFC1191) */
uint32_t ident;
- uint16_t port; // 32768 + 666; /* start udp dest port # for probe packets */
+ uint16_t port; // 33434; /* start udp dest port # for probe packets */
int waittime; // 5; /* time to wait for response (in seconds) */
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
- int optlen; /* length of ip options */
-#else
-#define optlen 0
-#endif
unsigned char recv_pkt[512]; /* last inbound (icmp) packet */
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
- /* Maximum number of gateways (include room for one noop) */
-#define NGATEWAYS ((int)((MAX_IPOPTLEN - IPOPT_MINOFF - 1) / sizeof(uint32_t)))
- /* loose source route gateway list (including room for final destination) */
- uint32_t gwlist[NGATEWAYS + 1];
-#endif
};
#define G (*ptr_to_globals)
#define ident (G.ident )
#define port (G.port )
#define waittime (G.waittime )
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
-# define optlen (G.optlen )
-#endif
#define recv_pkt (G.recv_pkt )
#define gwlist (G.gwlist )
#define INIT_G() do { \
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
- port = 32768 + 666; \
+ port = 33434; \
waittime = 5; \
} while (0)
/* Payload */
#if ENABLE_TRACEROUTE6
if (dest_lsa->u.sa.sa_family == AF_INET6) {
- struct outdata6_t *pkt = (struct outdata6_t *) outip;
+ struct outdata6_t *pkt = (struct outdata6_t *) outdata;
pkt->ident6 = htonl(ident);
pkt->seq6 = htonl(seq);
/*gettimeofday(&pkt->tv, &tz);*/
/* Always calculate checksum for icmp packets */
outicmp->icmp_cksum = 0;
- outicmp->icmp_cksum = inet_cksum((uint16_t *)outicmp,
- packlen - (sizeof(*outip) + optlen));
+ outicmp->icmp_cksum = inet_cksum(
+ (uint16_t *)outicmp,
+ ((char*)outip + packlen) - (char*)outicmp
+ );
if (outicmp->icmp_cksum == 0)
outicmp->icmp_cksum = 0xffff;
}
}
#endif
+ out = outdata;
#if ENABLE_TRACEROUTE6
if (dest_lsa->u.sa.sa_family == AF_INET6) {
res = setsockopt_int(sndsock, SOL_IPV6, IPV6_UNICAST_HOPS, ttl);
if (res != 0)
bb_perror_msg_and_die("setsockopt(%s) %d", "UNICAST_HOPS", ttl);
- out = outip;
- len = packlen;
} else
#endif
{
if (res != 0)
bb_perror_msg_and_die("setsockopt(%s) %d", "TTL", ttl);
#endif
- out = outicmp;
- len = packlen - sizeof(*outip);
- if (!(option_mask32 & OPT_USE_ICMP)) {
- out = outdata;
- len -= sizeof(*outudp);
- set_nport(&dest_lsa->u.sa, htons(port + seq));
- }
+ if (option_mask32 & OPT_USE_ICMP)
+ out = outicmp;
}
+ if (!(option_mask32 & OPT_USE_ICMP)) {
+ set_nport(&dest_lsa->u.sa, htons(port + seq));
+ }
+ len = ((char*)outip + packlen) - (char*)out;
res = xsendto(sndsock, out, len, &dest_lsa->u.sa, dest_lsa->len);
if (res != len)
bb_error_msg("sent %d octets, ret=%d", len, res);
# if ENABLE_FEATURE_TRACEROUTE_VERBOSE
if (verbose) {
+# ifndef MAXHOSTNAMELEN
+# define MAXHOSTNAMELEN 80
+# endif
unsigned char *p;
char pa1[MAXHOSTNAMELEN];
char pa2[MAXHOSTNAMELEN];
char *pausemsecs_str;
char *first_ttl_str;
char *dest_str;
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
- llist_t *source_route_list = NULL;
- int lsrr = 0;
-#endif
#if ENABLE_TRACEROUTE6
sa_family_t af;
#else
INIT_G();
- /* minimum 1 arg */
- opt_complementary = "-1:x-x";
- op |= getopt32(argv, OPT_STRING
+ op |= getopt32(argv, "^"
+ OPT_STRING
+ "\0" "-1:x-x" /* minimum 1 arg */
, &tos_str, &device, &max_ttl_str, &port_str, &nprobes_str
, &source, &waittime_str, &pausemsecs_str, &first_ttl_str
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
- , &source_route_list
-#endif
);
argv += optind;
if (op & OPT_FIRST_TTL)
first_ttl = xatou_range(first_ttl_str, 1, max_ttl);
-#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
- if (source_route_list) {
- while (source_route_list) {
- len_and_sockaddr *lsa;
-
- if (lsrr >= NGATEWAYS)
- bb_error_msg_and_die("no more than %d gateways", NGATEWAYS);
- lsa = xhost_and_af2sockaddr(llist_pop(&source_route_list), 0, AF_INET);
- gwlist[lsrr] = lsa->u.sin.sin_addr.s_addr;
- free(lsa);
- ++lsrr;
- }
- optlen = (lsrr + 1) * sizeof(gwlist[0]);
- }
-#endif
-
/* Process destination and optional packet size */
- minpacket = sizeof(*outip) + SIZEOF_ICMP_HDR + sizeof(*outdata) + optlen;
+ minpacket = sizeof(struct ip)
+ + SIZEOF_ICMP_HDR
+ + sizeof(struct outdata_t);
if (!(op & OPT_USE_ICMP))
- minpacket += sizeof(*outudp) - SIZEOF_ICMP_HDR;
+ minpacket = sizeof(struct ip)
+ + sizeof(struct udphdr)
+ + sizeof(struct outdata_t);
#if ENABLE_TRACEROUTE6
af = AF_UNSPEC;
if (op & OPT_IPV4)
dest_lsa = xhost_and_af2sockaddr(argv[0], port, af);
af = dest_lsa->u.sa.sa_family;
if (af == AF_INET6)
- minpacket = sizeof(struct outdata6_t);
+ minpacket = sizeof(struct ip6_hdr)
+ + sizeof(struct udphdr)
+ + sizeof(struct outdata6_t);
#else
dest_lsa = xhost2sockaddr(argv[0], port);
#endif
#if ENABLE_TRACEROUTE6
if (af == AF_INET6) {
xmove_fd(xsocket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6), rcvsock);
-# ifdef IPV6_RECVPKTINFO
setsockopt_1(rcvsock, SOL_IPV6, IPV6_RECVPKTINFO);
- setsockopt_1(rcvsock, SOL_IPV6, IPV6_2292PKTINFO);
-# else
- setsockopt_1(rcvsock, SOL_IPV6, IPV6_PKTINFO);
-# endif
} else
#endif
{
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 && defined IP_OPTIONS
- if (lsrr > 0) {
- unsigned char optlist[MAX_IPOPTLEN];
- unsigned size;
-
- /* final hop */
- gwlist[lsrr] = dest_lsa->u.sin.sin_addr.s_addr;
- ++lsrr;
-
- /* force 4 byte alignment */
- optlist[0] = IPOPT_NOP;
- /* loose source route option */
- optlist[1] = IPOPT_LSRR;
- size = lsrr * sizeof(gwlist[0]);
- optlist[2] = size + 3;
- /* pointer to LSRR addresses */
- optlist[3] = IPOPT_MINOFF;
- memcpy(optlist + 4, gwlist, size);
-
- if (setsockopt(sndsock, IPPROTO_IP, IP_OPTIONS,
- (char *)optlist, size + sizeof(gwlist[0])) < 0) {
- bb_perror_msg_and_die("IP_OPTIONS");
- }
- }
-#endif
}
#ifdef SO_SNDBUF
ident = getpid();
- if (af == AF_INET) {
+ if (!ENABLE_TRACEROUTE6 || af == AF_INET) {
if (op & OPT_USE_ICMP) {
ident |= 0x8000;
outicmp->icmp_type = ICMP_ECHO;
outdata = (struct outdata_t *)(outudp + 1);
}
}
+#if ENABLE_TRACEROUTE6
+ if (af == AF_INET6) {
+ outdata = (void*)((char*)outip
+ + sizeof(struct ip6_hdr)
+ + sizeof(struct udphdr)
+ );
+ }
+#endif
if (op & OPT_DEVICE) /* hmm, do we need error check? */
setsockopt_bindtodevice(sndsock, device);
return 0;
}
+#if ENABLE_TRACEROUTE
int traceroute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int traceroute_main(int argc UNUSED_PARAM, char **argv)
{
return common_traceroute_main(0, argv);
}
+#endif
#if ENABLE_TRACEROUTE6
int traceroute6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
projects / oweals / busybox.git / blobdiff