- setsockopt/sysctl takes int, not u_long.
- be more picky about argument parsing - like ERANGE. - use u_long for args, not to lose accuracy/prevent overflow. - socklen_t audit. - Add -I (use icmp) option. - warn if multiple addresses are present for dest. - no need to pass tz. - type pedant. check -p range. - grab hlim from sysctl. - typo in port number setting. Obtained from: KAME
This commit is contained in:
Hajimu UMEMOTO
parent
0926d72773
commit
84a1a4cfab
@ -1,4 +1,4 @@
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.\" $KAME: traceroute6.8,v 1.8 2000/06/12 16:29:18 itojun Exp $
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.\" $KAME: traceroute6.8,v 1.9 2002/08/30 03:56:20 onoe Exp $
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.\"
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.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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.\" All rights reserved.
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@ -40,7 +40,7 @@
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.Sh SYNOPSIS
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.Nm
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.Bk -words
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.Op Fl dlnrv
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.Op Fl dIlnrv
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.Ek
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.Bk -words
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.Op Fl f Ar firsthop
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@ -76,15 +76,19 @@ Debug mode.
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Specify how many hops to skip in trace.
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.It Fl g Ar gateway
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Specify intermediate gateway
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.Nm (
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uses routing header).
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.It Fl m Ar hoplimit
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Specify maximum hoplimit.
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.Po
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.Nm
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uses routing header
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.Pc .
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.It Fl I
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Use ICMP6 ECHO instead of UDP datagrams.
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.It Fl l
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Print both host hostnames and numeric addresses.
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Normally
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.Nm
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prints only hostnames if
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.It Fl m Ar hoplimit
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Specify maximum hoplimit.
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.Fl n
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is not specified, and only numeric addresses if
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.Fl n
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@ -110,7 +114,7 @@ Specify the delay time between probes.
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.Sh RETURN VALUES
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The
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.Nm
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utility will exit with 0 on success, and non-zero on errors.
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command will exit with 0 on success, and non-zero on errors.
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.\"
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.Sh SEE ALSO
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.Xr ping 8 ,
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@ -120,4 +124,4 @@ utility will exit with 0 on success, and non-zero on errors.
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.Sh HISTORY
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The
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.Nm
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utility first appeared in WIDE hydrangea IPv6 protocol stack kit.
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command first appeared in WIDE hydrangea IPv6 protocol stack kit.
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@ -1,4 +1,4 @@
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/* $KAME: traceroute6.c,v 1.42 2001/05/08 04:36:41 itojun Exp $ */
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/* $KAME: traceroute6.c,v 1.66 2003/01/21 09:04:15 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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@ -256,6 +256,7 @@ static const char rcsid[] =
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#include <sys/uio.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/sysctl.h>
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#include <netinet/in.h>
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@ -284,18 +285,6 @@ static const char rcsid[] =
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#define DUMMY_PORT 10010
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#define MAXPACKET 65535 /* max ip packet size */
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 64
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#endif
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#ifndef FD_SET
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#define NFDBITS (8*sizeof(fd_set))
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#define FD_SETSIZE NFDBITS
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#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
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#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
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#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
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#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
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#endif
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#ifndef HAVE_GETIPNODEBYNAME
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#define getipnodebyname(x, y, z, u) gethostbyname2((x), (y))
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@ -310,6 +299,10 @@ struct opacket {
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u_char hops; /* hop limit of the packet */
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struct timeval tv; /* time packet left */
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};
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struct tv32 {
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u_int32_t tv32_sec;
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u_int32_t tv32_usec;
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};
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u_char packet[512]; /* last inbound (icmp) packet */
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struct opacket *outpacket; /* last output (udp) packet */
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@ -321,7 +314,7 @@ int wait_for_reply __P((int, struct msghdr *));
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int setpolicy __P((int so, char *policy));
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#endif
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#endif
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void send_probe __P((int, int));
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void send_probe __P((int, u_long));
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struct udphdr *get_udphdr __P((struct ip6_hdr *, u_char *));
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int get_hoplim __P((struct msghdr *));
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double deltaT __P((struct timeval *, struct timeval *));
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@ -334,7 +327,6 @@ void usage __P((void));
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int rcvsock; /* receive (icmp) socket file descriptor */
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int sndsock; /* send (udp) socket file descriptor */
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struct timezone tz; /* leftover */
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struct msghdr rcvmhdr;
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struct iovec rcviov[2];
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@ -342,7 +334,8 @@ int rcvhlim;
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struct in6_pktinfo *rcvpktinfo;
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struct sockaddr_in6 Src, Dst, Rcv;
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int datalen; /* How much data */
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u_long datalen; /* How much data */
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#define ICMP6ECHOLEN 8
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/* XXX: 2064 = 127(max hops in type 0 rthdr) * sizeof(ip6_hdr) + 16(margin) */
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char rtbuf[2064];
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#ifdef USE_RFC2292BIS
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@ -353,15 +346,17 @@ struct cmsghdr *cmsg;
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char *source = 0;
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char *hostname;
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int nprobes = 3;
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int first_hop = 1;
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int max_hops = 30;
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u_short ident;
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u_short port = 32768+666; /* start udp dest port # for probe packets */
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u_long nprobes = 3;
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u_long first_hop = 1;
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u_long max_hops = 30;
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u_int16_t srcport;
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u_int16_t port = 32768+666; /* start udp dest port # for probe packets */
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u_int16_t ident;
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int options; /* socket options */
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int verbose;
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int waittime = 5; /* time to wait for response (in seconds) */
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int nflag; /* print addresses numerically */
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int useicmp;
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int lflag; /* print both numerical address & hostname */
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int
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@ -372,10 +367,15 @@ main(argc, argv)
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struct hostent *hp;
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int error;
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struct addrinfo hints, *res;
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int ch, i, on, probe, seq, hops, rcvcmsglen;
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int ch, i, on, seq, rcvcmsglen;
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u_long probe, hops;
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static u_char *rcvcmsgbuf;
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char hbuf[NI_MAXHOST], src0[NI_MAXHOST];
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char *ep;
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int mib[4] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_DEFHLIM };
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size_t size;
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u_long lport;
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int minlen;
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/*
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* Receive ICMP
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@ -389,6 +389,10 @@ main(argc, argv)
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seteuid(getuid());
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setuid(getuid());
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size = sizeof(i);
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(void) sysctl(mib, sizeof(mib)/sizeof(mib[0]), &i, &size, NULL, 0);
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max_hops = i;
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/* set a minimum set of socket options */
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on = 1;
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/* specify to tell receiving interface */
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@ -415,24 +419,20 @@ main(argc, argv)
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seq = 0;
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while ((ch = getopt(argc, argv, "df:g:lm:np:q:rs:w:v")) != -1)
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while ((ch = getopt(argc, argv, "df:g:Ilm:np:q:rs:w:v")) != -1)
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switch (ch) {
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case 'd':
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options |= SO_DEBUG;
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break;
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case 'f':
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ep = NULL;
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errno = 0;
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first_hop = strtoul(optarg, &ep, 0);
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if (!*argv || *ep) {
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if (errno || !*optarg || *ep || first_hop > 255) {
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fprintf(stderr,
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"traceroute6: invalid min hoplimit.\n");
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exit(1);
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}
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if (first_hop > max_hops) {
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fprintf(stderr,
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"traceroute6: min hoplimit must be <= %d.\n", max_hops);
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exit(1);
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}
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break;
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case 'g':
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hp = getipnodebyname(optarg, AF_INET6, 0, &h_errno);
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@ -470,44 +470,46 @@ main(argc, argv)
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#endif
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freehostent(hp);
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break;
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case 'I':
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useicmp++;
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ident = htons(getpid() & 0xffff); /* same as ping6 */
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break;
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case 'l':
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lflag++;
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break;
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case 'm':
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ep = NULL;
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errno = 0;
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max_hops = strtoul(optarg, &ep, 0);
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if (!*argv || *ep) {
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if (errno || !*optarg || *ep || max_hops > 255) {
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fprintf(stderr,
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"traceroute6: invalid max hoplimit.\n");
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exit(1);
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}
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if (max_hops < first_hop) {
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fprintf(stderr,
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"traceroute6: max hoplimit must be >= %d.\n", first_hop);
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exit(1);
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}
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break;
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case 'n':
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nflag++;
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break;
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case 'p':
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ep = NULL;
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port = strtoul(optarg, &ep, 0);
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if (!*argv || *ep) {
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fprintf(stderr,
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"traceroute6: port.\n");
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errno = 0;
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lport = strtoul(optarg, &ep, 0);
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if (errno || !*optarg || *ep) {
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fprintf(stderr, "traceroute6: invalid port.\n");
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exit(1);
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}
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if (port < 1) {
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if (lport == 0 || lport != (lport & 0xffff)) {
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fprintf(stderr,
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"traceroute6: port must be >0.\n");
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"traceroute6: port out of range.\n");
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exit(1);
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}
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port = lport & 0xffff;
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break;
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case 'q':
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ep = NULL;
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errno = 0;
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nprobes = strtoul(optarg, &ep, 0);
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if (!*argv || *ep) {
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if (errno || !*optarg || *ep) {
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fprintf(stderr,
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"traceroute6: invalid nprobes.\n");
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exit(1);
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@ -533,8 +535,9 @@ main(argc, argv)
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break;
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case 'w':
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ep = NULL;
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errno = 0;
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waittime = strtoul(optarg, &ep, 0);
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if (!*argv || *ep) {
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if (errno || !*optarg || *ep) {
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fprintf(stderr,
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"traceroute6: invalid wait time.\n");
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exit(1);
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@ -551,6 +554,12 @@ main(argc, argv)
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argc -= optind;
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argv += optind;
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if (max_hops < first_hop) {
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fprintf(stderr,
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"traceroute6: max hoplimit must be larger than first hoplimit.\n");
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exit(1);
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}
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if (argc < 1 || argc > 2)
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usage();
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@ -582,23 +591,36 @@ main(argc, argv)
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fprintf(stderr, "traceroute6: not enough core\n");
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exit(1);
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}
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if (res->ai_next) {
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if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
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sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
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strlcpy(hbuf, "?", sizeof(hbuf));
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fprintf(stderr, "traceroute6: Warning: %s has multiple "
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"addresses; using %s\n", hostname, hbuf);
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}
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if (*++argv) {
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ep = NULL;
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errno = 0;
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datalen = strtoul(*argv, &ep, 0);
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if (!*argv || *ep) {
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if (errno || !*argv || *ep) {
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fprintf(stderr,
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"traceroute6: invalid packet length.\n");
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exit(1);
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}
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}
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if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket)) {
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if (useicmp)
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minlen = ICMP6ECHOLEN + sizeof(struct tv32);
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else
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minlen = sizeof(struct opacket);
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if (datalen < minlen)
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datalen = minlen;
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else if (datalen >= MAXPACKET) {
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fprintf(stderr,
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"traceroute6: packet size must be 0 <= s < %ld.\n",
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(long)(MAXPACKET - sizeof(struct opacket)));
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"traceroute6: packet size must be %d <= s < %ld.\n",
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minlen, (long)MAXPACKET);
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exit(1);
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}
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datalen += sizeof(struct opacket);
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outpacket = (struct opacket *)malloc((unsigned)datalen);
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if (! outpacket) {
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perror("malloc");
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@ -662,15 +684,20 @@ main(argc, argv)
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#endif /*IPSEC*/
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/*
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* Send UDP
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* Send UDP or ICMP
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*/
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if (useicmp) {
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sndsock = rcvsock;
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} else {
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if ((sndsock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
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perror("socket(SOCK_DGRAM)");
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exit(5);
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}
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}
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#ifdef SO_SNDBUF
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if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
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sizeof(datalen)) < 0) {
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i = datalen;
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if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&i,
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||||
sizeof(i)) < 0) {
|
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perror("setsockopt(SO_SNDBUF)");
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exit(6);
|
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}
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@ -762,7 +789,8 @@ main(argc, argv)
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||||
freeaddrinfo(res);
|
||||
} else {
|
||||
struct sockaddr_in6 Nxt;
|
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int dummy, len;
|
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int dummy;
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socklen_t len;
|
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|
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Nxt = Dst;
|
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Nxt.sin6_port = htons(DUMMY_PORT);
|
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@ -791,22 +819,21 @@ main(argc, argv)
|
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close(dummy);
|
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}
|
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|
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ident = (getpid() & 0xffff) | 0x8000;
|
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Src.sin6_port = htons(ident);
|
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Src.sin6_port = htons(0);
|
||||
if (bind(sndsock, (struct sockaddr *)&Src, Src.sin6_len) < 0) {
|
||||
perror("bind");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (ident == 0) {
|
||||
{
|
||||
socklen_t len;
|
||||
|
||||
len = sizeof(Src);
|
||||
if (getsockname(sndsock, (struct sockaddr *)&Src, &i) < 0) {
|
||||
if (getsockname(sndsock, (struct sockaddr *)&Src, &len) < 0) {
|
||||
perror("getsockname");
|
||||
exit(1);
|
||||
}
|
||||
ident = ntohs(Src.sin6_port);
|
||||
srcport = ntohs(Src.sin6_port);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -819,12 +846,12 @@ main(argc, argv)
|
||||
fprintf(stderr, " to %s (%s)", hostname, hbuf);
|
||||
if (source)
|
||||
fprintf(stderr, " from %s", source);
|
||||
fprintf(stderr, ", %d hops max, %d byte packets\n",
|
||||
fprintf(stderr, ", %lu hops max, %lu byte packets\n",
|
||||
max_hops, datalen);
|
||||
(void) fflush(stderr);
|
||||
|
||||
if (first_hop > 1)
|
||||
printf("Skipping %d intermediate hops\n", first_hop - 1);
|
||||
printf("Skipping %lu intermediate hops\n", first_hop - 1);
|
||||
|
||||
/*
|
||||
* Main loop
|
||||
@ -834,17 +861,16 @@ main(argc, argv)
|
||||
int got_there = 0;
|
||||
int unreachable = 0;
|
||||
|
||||
printf("%2d ", hops);
|
||||
printf("%2lu ", hops);
|
||||
bzero(&lastaddr, sizeof(lastaddr));
|
||||
for (probe = 0; probe < nprobes; ++probe) {
|
||||
int cc;
|
||||
struct timeval t1, t2;
|
||||
struct timezone tz;
|
||||
|
||||
(void) gettimeofday(&t1, &tz);
|
||||
(void) gettimeofday(&t1, NULL);
|
||||
send_probe(++seq, hops);
|
||||
while ((cc = wait_for_reply(rcvsock, &rcvmhdr))) {
|
||||
(void) gettimeofday(&t2, &tz);
|
||||
(void) gettimeofday(&t2, NULL);
|
||||
if ((i = packet_ok(&rcvmhdr, cc, seq))) {
|
||||
if (! IN6_ARE_ADDR_EQUAL(&Rcv.sin6_addr,
|
||||
&lastaddr)) {
|
||||
@ -956,28 +982,46 @@ setpolicy(so, policy)
|
||||
|
||||
void
|
||||
send_probe(seq, hops)
|
||||
int seq, hops;
|
||||
int seq;
|
||||
u_long hops;
|
||||
{
|
||||
struct opacket *op = outpacket;
|
||||
int i;
|
||||
|
||||
i = hops;
|
||||
if (setsockopt(sndsock, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
|
||||
(char *)&hops, sizeof(hops)) < 0) {
|
||||
(char *)&i, sizeof(i)) < 0) {
|
||||
perror("setsockopt IPV6_UNICAST_HOPS");
|
||||
}
|
||||
|
||||
Dst.sin6_port = htons(port + seq);
|
||||
|
||||
if (useicmp) {
|
||||
struct icmp6_hdr *icp = (struct icmp6_hdr *)outpacket;
|
||||
struct timeval tv;
|
||||
struct tv32 *tv32;
|
||||
|
||||
icp->icmp6_type = ICMP6_ECHO_REQUEST;
|
||||
icp->icmp6_code = 0;
|
||||
icp->icmp6_cksum = 0;
|
||||
icp->icmp6_id = ident;
|
||||
icp->icmp6_seq = htons(seq);
|
||||
(void) gettimeofday(&tv, NULL);
|
||||
tv32 = (struct tv32 *)((u_int8_t *)outpacket + ICMP6ECHOLEN);
|
||||
tv32->tv32_sec = htonl(tv.tv_sec);
|
||||
tv32->tv32_usec = htonl(tv.tv_usec);
|
||||
} else {
|
||||
struct opacket *op = outpacket;
|
||||
op->seq = seq;
|
||||
op->hops = hops;
|
||||
(void) gettimeofday(&op->tv, &tz);
|
||||
(void) gettimeofday(&op->tv, NULL);
|
||||
}
|
||||
|
||||
i = sendto(sndsock, (char *)outpacket, datalen, 0,
|
||||
(struct sockaddr *)&Dst, Dst.sin6_len);
|
||||
if (i < 0 || i != datalen) {
|
||||
if (i<0)
|
||||
perror("sendto");
|
||||
printf("traceroute6: wrote %s %d chars, ret=%d\n",
|
||||
printf("traceroute6: wrote %s %lu chars, ret=%d\n",
|
||||
hostname, datalen, i);
|
||||
(void) fflush(stdout);
|
||||
}
|
||||
@ -1157,9 +1201,18 @@ packet_ok(mhdr, cc, seq)
|
||||
warnx("failed to get upper layer header");
|
||||
return(0);
|
||||
}
|
||||
if (up->uh_sport == htons(ident) &&
|
||||
up->uh_dport == htons(port+seq))
|
||||
if (useicmp &&
|
||||
((struct icmp6_hdr *)up)->icmp6_id == ident &&
|
||||
((struct icmp6_hdr *)up)->icmp6_seq == htons(seq))
|
||||
return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1);
|
||||
else if (!useicmp &&
|
||||
up->uh_sport == htons(srcport) &&
|
||||
up->uh_dport == htons(port + seq))
|
||||
return (type == ICMP6_TIME_EXCEEDED ? -1 : code + 1);
|
||||
} else if (useicmp && type == ICMP6_ECHO_REPLY) {
|
||||
if (icp->icmp6_id == ident &&
|
||||
icp->icmp6_seq == htons(seq))
|
||||
return (ICMP6_DST_UNREACH_NOPORT + 1);
|
||||
}
|
||||
if (verbose) {
|
||||
int i;
|
||||
@ -1192,7 +1245,7 @@ packet_ok(mhdr, cc, seq)
|
||||
}
|
||||
|
||||
/*
|
||||
* Increment pointer until find the UDP header.
|
||||
* Increment pointer until find the UDP or ICMP header.
|
||||
*/
|
||||
struct udphdr *
|
||||
get_udphdr(ip6, lim)
|
||||
@ -1212,10 +1265,11 @@ get_udphdr(ip6, lim)
|
||||
switch (nh) {
|
||||
case IPPROTO_ESP:
|
||||
case IPPROTO_TCP:
|
||||
case IPPROTO_ICMPV6:
|
||||
return(NULL);
|
||||
case IPPROTO_ICMPV6:
|
||||
return(useicmp ? (struct udphdr *)cp : NULL);
|
||||
case IPPROTO_UDP:
|
||||
return((struct udphdr *)cp);
|
||||
return(useicmp ? NULL : (struct udphdr *)cp);
|
||||
case IPPROTO_FRAGMENT:
|
||||
hlen = sizeof(struct ip6_frag);
|
||||
nh = ((struct ip6_frag *)cp)->ip6f_nxt;
|
||||
@ -1327,8 +1381,9 @@ inetname(sa)
|
||||
void
|
||||
usage()
|
||||
{
|
||||
(void)fprintf(stderr,
|
||||
"usage: traceroute6 [-dlnrv] [-f firsthop] [-g gateway] [-m hoplimit] [-p port]\n"
|
||||
" [-q probes] [-s src] [-w waittime] target [datalen]\n");
|
||||
|
||||
fprintf(stderr,
|
||||
"usage: traceroute6 [-dIlnrv] [-f firsthop] [-g gateway] [-m hoplimit]\n"
|
||||
" [-p port] [-q probes] [-s src] [-w waittime] target [datalen]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user