* Tue Dec 20 03:50:13 PST 1988
*/
-#define TRACEROUTE_SO_DEBUG 0
-
-/* TODO: undefs were uncommented - ??! we have config system for that! */
-/* probably ok to remove altogether */
-//#undef CONFIG_FEATURE_TRACEROUTE_VERBOSE
-//#define CONFIG_FEATURE_TRACEROUTE_VERBOSE
-//#undef CONFIG_FEATURE_TRACEROUTE_SOURCE_ROUTE
-//#define CONFIG_FEATURE_TRACEROUTE_SOURCE_ROUTE
-//#undef CONFIG_FEATURE_TRACEROUTE_USE_ICMP
-//#define CONFIG_FEATURE_TRACEROUTE_USE_ICMP
+//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: " [-z PAUSE_MSEC] HOST [BYTES]"
+//usage:#define traceroute_full_usage "\n\n"
+//usage: "Trace the route to HOST\n"
+//usage: IF_TRACEROUTE6(
+//usage: "\n -4,-6 Force IP or IPv6 name resolution"
+//usage: )
+//usage: "\n -F Set don't fragment bit"
+//usage: IF_FEATURE_TRACEROUTE_USE_ICMP(
+//usage: "\n -I Use ICMP ECHO instead of UDP datagrams"
+//usage: )
+//usage: "\n -l Display TTL value of the returned packet"
+//Currently disabled (TRACEROUTE_SO_DEBUG==0)
+////usage: "\n -d Set SO_DEBUG options to socket"
+//usage: "\n -n Print numeric addresses"
+//usage: "\n -r Bypass routing tables, send directly to HOST"
+//usage: IF_FEATURE_TRACEROUTE_VERBOSE(
+//usage: "\n -v Verbose"
+//usage: )
+//usage: "\n -f N First number of hops (default 1)"
+//usage: "\n -m N Max number of hops"
+//usage: "\n -q N Number of probes per hop (default 3)"
+//usage: "\n -p N Base UDP port number used in probes"
+//usage: "\n (default 33434)"
+//usage: "\n -s IP Source address"
+//usage: "\n -i IFACE Source interface"
+//usage: "\n -t N Type-of-service in probe packets (default 0)"
+//usage: "\n -w SEC Time to wait for a response (default 3)"
+//usage: "\n -g IP Loose source route gateway (8 max)"
+//usage:
+//usage:#define traceroute6_trivial_usage
+//usage: "[-nrv] [-m MAXTTL] [-q PROBES] [-p PORT]\n"
+//usage: " [-t TOS] [-w WAIT_SEC] [-s SRC_IP] [-i IFACE]\n"
+//usage: " HOST [BYTES]"
+//usage:#define traceroute6_full_usage "\n\n"
+//usage: "Trace the route to HOST\n"
+//Currently disabled (TRACEROUTE_SO_DEBUG==0)
+////usage: "\n -d Set SO_DEBUG options to socket"
+//usage: "\n -n Print numeric addresses"
+//usage: "\n -r Bypass routing tables, send directly to HOST"
+//usage: IF_FEATURE_TRACEROUTE_VERBOSE(
+//usage: "\n -v Verbose"
+//usage: )
+//usage: "\n -m N Max number of hops"
+//usage: "\n -q N Number of probes per hop (default 3)"
+//usage: "\n -p N Base UDP port number used in probes"
+//usage: "\n (default 33434)"
+//usage: "\n -s IP Source address"
+//usage: "\n -i IFACE Source interface"
+//usage: "\n -t N Type-of-service in probe packets (default 0)"
+//usage: "\n -w SEC Time wait for a response (default 3)"
+#define TRACEROUTE_SO_DEBUG 0
#include <net/if.h>
#include <arpa/inet.h>
#endif
-#define OPT_STRING "FIlnrdvxt:i:m:p:q:s:w:z:f:" \
- IF_FEATURE_TRACEROUTE_SOURCE_ROUTE("g:") \
- "4" IF_TRACEROUTE6("6")
+#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_USE_ICMP = (1 << 1) * ENABLE_FEATURE_TRACEROUTE_USE_ICMP, /* I */
#define outudp ((struct udphdr *)(outip + 1))
-/* libbb candidate? tftp uses this idiom too */
-static len_and_sockaddr* dup_sockaddr(const len_and_sockaddr *lsa)
-{
- len_and_sockaddr *new_lsa = xzalloc(LSA_LEN_SIZE + lsa->len);
- memcpy(new_lsa, lsa, LSA_LEN_SIZE + lsa->len);
- return new_lsa;
-}
-
-
static int
-wait_for_reply(len_and_sockaddr *from_lsa, struct sockaddr *to)
+wait_for_reply(len_and_sockaddr *from_lsa, struct sockaddr *to, unsigned *timestamp_us, int *left_ms)
{
struct pollfd pfd[1];
int read_len = 0;
pfd[0].fd = rcvsock;
pfd[0].events = POLLIN;
- if (safe_poll(pfd, 1, waittime * 1000) > 0) {
+ if (*left_ms >= 0 && safe_poll(pfd, 1, *left_ms) > 0) {
+ unsigned t;
+
read_len = recv_from_to(rcvsock,
recv_pkt, sizeof(recv_pkt),
- /*flags:*/ 0,
+ /*flags:*/ MSG_DONTWAIT,
&from_lsa->u.sa, to, from_lsa->len);
+ t = monotonic_us();
+ *left_ms -= (t - *timestamp_us) / 1000;
+ *timestamp_us = t;
}
return read_len;
}
-/*
- * Checksum routine for Internet Protocol family headers (C Version)
- */
-static uint16_t
-in_cksum(uint16_t *addr, int len)
-{
- int nleft = len;
- uint16_t *w = addr;
- uint16_t answer;
- int sum = 0;
-
- /*
- * Our algorithm is simple, using a 32 bit accumulator (sum),
- * we add sequential 16 bit words to it, and at the end, fold
- * back all the carry bits from the top 16 bits into the lower
- * 16 bits.
- */
- while (nleft > 1) {
- sum += *w++;
- nleft -= 2;
- }
-
- /* mop up an odd byte, if necessary */
- if (nleft == 1)
- sum += *(unsigned char *)w;
-
- /* add back carry outs from top 16 bits to low 16 bits */
- sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
- sum += (sum >> 16); /* add carry */
- answer = ~sum; /* truncate to 16 bits */
- return answer;
-}
-
static void
send_probe(int seq, int ttl)
{
/* Always calculate checksum for icmp packets */
outicmp->icmp_cksum = 0;
- outicmp->icmp_cksum = in_cksum((uint16_t *)outicmp,
+ outicmp->icmp_cksum = inet_cksum((uint16_t *)outicmp,
packlen - (sizeof(*outip) + optlen));
if (outicmp->icmp_cksum == 0)
outicmp->icmp_cksum = 0xffff;
#if ENABLE_TRACEROUTE6
if (dest_lsa->u.sa.sa_family == AF_INET6) {
- res = setsockopt(sndsock, SOL_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof(ttl));
- if (res < 0)
- bb_perror_msg_and_die("setsockopt UNICAST_HOPS %d", ttl);
+ 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 defined IP_TTL
- res = setsockopt(sndsock, IPPROTO_IP, IP_TTL, &ttl, sizeof(ttl));
- if (res < 0)
- bb_perror_msg_and_die("setsockopt ttl %d", ttl);
+ res = setsockopt_int(sndsock, IPPROTO_IP, IP_TTL, ttl);
+ 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, htons(port + seq));
+ set_nport(&dest_lsa->u.sa, htons(port + seq));
}
}
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);
+ bb_error_msg("sent %d octets, ret=%d", len, res);
}
#if ENABLE_FEATURE_TRACEROUTE_VERBOSE
type, pr_type(type), icp->icmp6_code);
read_len -= sizeof(struct icmp6_hdr);
- for (i = 0; i < read_len ; i++) {
+ for (i = 0; i < read_len; i++) {
if (i % 16 == 0)
printf("%04x:", i);
if (i % 4 == 0)
static int
common_traceroute_main(int op, char **argv)
{
- int i;
int minpacket;
+#ifdef IP_TOS
int tos = 0;
+#endif
int max_ttl = 30;
int nprobes = 3;
int first_ttl = 1;
char *waittime_str;
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;
if (op & OPT_IP_CHKSUM)
bb_error_msg("warning: ip checksums disabled");
#endif
+#ifdef IP_TOS
if (op & OPT_TOS)
tos = xatou_range(tos_str, 0, 255);
+#endif
if (op & OPT_MAX_TTL)
max_ttl = xatou_range(max_ttl_str, 1, 255);
if (op & OPT_PORT)
if (af == AF_INET6) {
xmove_fd(xsocket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6), rcvsock);
# ifdef IPV6_RECVPKTINFO
- setsockopt(rcvsock, SOL_IPV6, IPV6_RECVPKTINFO,
- &const_int_1, sizeof(const_int_1));
- setsockopt(rcvsock, SOL_IPV6, IPV6_2292PKTINFO,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_1(rcvsock, SOL_IPV6, IPV6_RECVPKTINFO);
+ setsockopt_1(rcvsock, SOL_IPV6, IPV6_2292PKTINFO);
# else
- setsockopt(rcvsock, SOL_IPV6, IPV6_PKTINFO,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_1(rcvsock, SOL_IPV6, IPV6_PKTINFO);
# endif
} else
#endif
#if TRACEROUTE_SO_DEBUG
if (op & OPT_DEBUG)
- setsockopt(rcvsock, SOL_SOCKET, SO_DEBUG,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_SOL_SOCKET_1(rcvsock, SO_DEBUG);
#endif
if (op & OPT_BYPASS_ROUTE)
- setsockopt(rcvsock, SOL_SOCKET, SO_DONTROUTE,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_SOL_SOCKET_1(rcvsock, SO_DONTROUTE);
#if ENABLE_TRACEROUTE6
if (af == AF_INET6) {
- static const int two = 2;
- if (setsockopt(rcvsock, SOL_RAW, IPV6_CHECKSUM, &two, sizeof(two)) < 0)
- bb_perror_msg_and_die("setsockopt RAW_CHECKSUM");
+ if (setsockopt_int(rcvsock, SOL_RAW, IPV6_CHECKSUM, 2) != 0)
+ bb_perror_msg_and_die("setsockopt(%s)", "IPV6_CHECKSUM");
xmove_fd(xsocket(af, SOCK_DGRAM, 0), sndsock);
} else
#endif
#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;
optlist[0] = IPOPT_NOP;
/* loose source route option */
optlist[1] = IPOPT_LSRR;
- i = lsrr * sizeof(gwlist[0]);
- optlist[2] = i + 3;
+ size = lsrr * sizeof(gwlist[0]);
+ optlist[2] = size + 3;
/* pointer to LSRR addresses */
optlist[3] = IPOPT_MINOFF;
- memcpy(optlist + 4, gwlist, i);
+ memcpy(optlist + 4, gwlist, size);
if (setsockopt(sndsock, IPPROTO_IP, IP_OPTIONS,
- (char *)optlist, i + sizeof(gwlist[0])) < 0) {
+ (char *)optlist, size + sizeof(gwlist[0])) < 0) {
bb_perror_msg_and_die("IP_OPTIONS");
}
}
}
#ifdef SO_SNDBUF
- if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, &packlen, sizeof(packlen)) < 0) {
- bb_perror_msg_and_die("SO_SNDBUF");
+ if (setsockopt_SOL_SOCKET_int(sndsock, SO_SNDBUF, packlen) != 0) {
+ bb_perror_msg_and_die("setsockopt(%s)", "SO_SNDBUF");
}
#endif
#ifdef IP_TOS
- if ((op & OPT_TOS) && setsockopt(sndsock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0) {
- bb_perror_msg_and_die("setsockopt tos %d", tos);
+ if ((op & OPT_TOS) && setsockopt_int(sndsock, IPPROTO_IP, IP_TOS, tos) != 0) {
+ bb_perror_msg_and_die("setsockopt(%s) %d", "TOS", tos);
}
#endif
#ifdef IP_DONTFRAG
if (op & OPT_DONT_FRAGMNT)
- setsockopt(sndsock, IPPROTO_IP, IP_DONTFRAG,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_1(sndsock, IPPROTO_IP, IP_DONTFRAG);
#endif
#if TRACEROUTE_SO_DEBUG
if (op & OPT_DEBUG)
- setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_SOL_SOCKET_1(sndsock, SO_DEBUG);
#endif
if (op & OPT_BYPASS_ROUTE)
- setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
- &const_int_1, sizeof(const_int_1));
+ setsockopt_SOL_SOCKET_1(sndsock, SO_DONTROUTE);
outip = xzalloc(packlen);
int probe_fd = xsocket(af, SOCK_DGRAM, 0);
if (op & OPT_DEVICE)
setsockopt_bindtodevice(probe_fd, device);
- set_nport(dest_lsa, htons(1025));
+ set_nport(&dest_lsa->u.sa, htons(1025));
/* dummy connect. makes kernel pick source IP (and port) */
xconnect(probe_fd, &dest_lsa->u.sa, dest_lsa->len);
- set_nport(dest_lsa, htons(port));
+ set_nport(&dest_lsa->u.sa, htons(port));
/* read IP and port */
source_lsa = get_sock_lsa(probe_fd);
close(probe_fd);
/* bind our sockets to this IP (but not port) */
- set_nport(source_lsa, 0);
+ set_nport(&source_lsa->u.sa, 0);
xbind(sndsock, &source_lsa->u.sa, source_lsa->len);
xbind(rcvsock, &source_lsa->u.sa, source_lsa->len);
xsetgid(getgid());
xsetuid(getuid());
- printf("traceroute to %s (%s)", argv[0],
- xmalloc_sockaddr2dotted_noport(&dest_lsa->u.sa));
+ dest_str = xmalloc_sockaddr2dotted_noport(&dest_lsa->u.sa);
+ printf("traceroute to %s (%s)", argv[0], dest_str);
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ free(dest_str);
+ }
+
if (op & OPT_SOURCE)
printf(" from %s", source);
printf(", %d hops max, %d byte packets\n", max_ttl, packlen);
- from_lsa = dup_sockaddr(dest_lsa);
+ from_lsa = xmemdup(dest_lsa, LSA_LEN_SIZE + dest_lsa->len);
lastaddr = xzalloc(dest_lsa->len);
to = xzalloc(dest_lsa->len);
seq = 0;
int unreachable = 0; /* counter */
int gotlastaddr = 0; /* flags */
int got_there = 0;
- int first = 1;
printf("%2d", ttl);
for (probe = 0; probe < nprobes; ++probe) {
int read_len;
unsigned t1;
unsigned t2;
+ int left_ms;
struct ip *ip;
- if (!first && pausemsecs > 0)
- usleep(pausemsecs * 1000);
fflush_all();
+ if (probe != 0 && pausemsecs > 0)
+ usleep(pausemsecs * 1000);
- t1 = monotonic_us();
send_probe(++seq, ttl);
+ t2 = t1 = monotonic_us();
+
+ left_ms = waittime * 1000;
+ while ((read_len = wait_for_reply(from_lsa, to, &t2, &left_ms)) != 0) {
+ int icmp_code;
- first = 0;
- while ((read_len = wait_for_reply(from_lsa, to)) != 0) {
- t2 = monotonic_us();
- i = packet_ok(read_len, from_lsa, to, seq);
+ /* Recv'ed a packet, or read error */
+ /* t2 = monotonic_us() - set by wait_for_reply */
+
+ if (read_len < 0)
+ continue;
+ icmp_code = packet_ok(read_len, from_lsa, to, seq);
/* Skip short packet */
- if (i == 0)
+ if (icmp_code == 0)
continue;
if (!gotlastaddr
printf(" (%d)", ip->ip_ttl);
/* time exceeded in transit */
- if (i == -1)
+ if (icmp_code == -1)
break;
- i--;
- switch (i) {
+ icmp_code--;
+ switch (icmp_code) {
#if ENABLE_TRACEROUTE6
case ICMP6_DST_UNREACH_NOPORT << 8:
got_there = 1;
++unreachable;
break;
default:
- printf(" !<%d>", i);
+ printf(" !<%d>", icmp_code);
++unreachable;
break;
}
break;
- }
+ } /* while (wait and read a packet) */
+
/* there was no packet at all? */
if (read_len == 0)
printf(" *");
- }
+ } /* for (nprobes) */
+
bb_putchar('\n');
if (got_there
|| (unreachable > 0 && unreachable >= nprobes - 1)
}
}
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ free(to);
+ free(lastaddr);
+ free(from_lsa);
+ }
+
return 0;
}
projects / oweals / busybox.git / blobdiff