static const char copyright[] _U_ =
"@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
The Regents of the University of California. All rights reserved.\n";
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.283 2008-09-25 21:45:50 guy Exp $ (LBL)";
#endif
/*
netdissect_options Gndo;
netdissect_options *gndo = &Gndo;
+static int Dflag; /* list available devices and exit */
static int dflag; /* print filter code */
static int Lflag; /* list available data link types and exit */
#ifdef HAVE_PCAP_SET_TSTAMP_TYPE
static int Jflag; /* list available time stamp types */
#endif
+#ifdef HAVE_PCAP_SETDIRECTION
+int Qflag = -1; /* restrict captured packet by send/receive direction */
+#endif
static char *zflag = NULL; /* compress each savefile using a specified command (like gzip or bzip2) */
static int infodelay;
static void dump_packet(u_char *, const struct pcap_pkthdr *, const u_char *);
static void droproot(const char *, const char *);
static void ndo_error(netdissect_options *ndo, const char *fmt, ...)
- __attribute__ ((noreturn, format (printf, 2, 3)));
-static void ndo_warning(netdissect_options *ndo, const char *fmt, ...);
+ __attribute__((noreturn))
+#ifdef __ATTRIBUTE___FORMAT_OK
+ __attribute__((format (printf, 2, 3)))
+#endif /* __ATTRIBUTE___FORMAT_OK */
+ ;
+static void ndo_warning(netdissect_options *ndo, const char *fmt, ...)
+#ifdef __ATTRIBUTE___FORMAT_OK
+ __attribute__((format (printf, 2, 3)))
+#endif /* __ATTRIBUTE___FORMAT_OK */
+ ;
#ifdef SIGNAL_REQ_INFO
RETSIGTYPE requestinfo(int);
};
-static struct printer printers[] = {
+static const struct printer printers[] = {
{ arcnet_if_print, DLT_ARCNET },
#ifdef DLT_ARCNET_LINUX
{ arcnet_linux_if_print, DLT_ARCNET_LINUX },
{ NULL, 0 },
};
-static struct ndo_printer ndo_printers[] = {
-#ifdef DLT_NFLOG
-#ifdef HAVE_LINUX_NETFILTER_NFNETLINK_LOG_H
- { nflog_if_print, DLT_NFLOG},
-#endif
-#endif
+static const struct ndo_printer ndo_printers[] = {
{ ether_if_print, DLT_EN10MB },
#ifdef DLT_IPNET
{ ipnet_if_print, DLT_IPNET },
#endif
#ifdef DLT_NETANALYZER_TRANSPARENT
{ netanalyzer_transparent_if_print, DLT_NETANALYZER_TRANSPARENT },
+#endif
+#ifdef DLT_NFLOG
+ { nflog_if_print, DLT_NFLOG},
#endif
{ NULL, 0 },
};
+static const struct tok status_flags[] = {
+#ifdef PCAP_IF_UP
+ { PCAP_IF_UP, "Up" },
+#endif
+#ifdef PCAP_IF_RUNNING
+ { PCAP_IF_RUNNING, "Running" },
+#endif
+ { PCAP_IF_LOOPBACK, "Loopback" },
+ { 0, NULL }
+};
+
if_printer
lookup_printer(int type)
{
- struct printer *p;
+ const struct printer *p;
for (p = printers; p->f; ++p)
if (type == p->type)
if_ndo_printer
lookup_ndo_printer(int type)
{
- struct ndo_printer *p;
+ const struct ndo_printer *p;
for (p = ndo_printers; p->f; ++p)
if (type == p->type)
exit(0);
}
+#ifdef HAVE_PCAP_FINDALLDEVS
+static void
+show_devices_and_exit (void)
+{
+ pcap_if_t *devpointer;
+ char ebuf[PCAP_ERRBUF_SIZE];
+ int i;
+
+ if (pcap_findalldevs(&devpointer, ebuf) < 0)
+ error("%s", ebuf);
+ else {
+ for (i = 0; devpointer != NULL; i++) {
+ printf("%d.%s", i+1, devpointer->name);
+ if (devpointer->description != NULL)
+ printf(" (%s)", devpointer->description);
+ if (devpointer->flags != 0)
+ printf(" [%s]", bittok2str(status_flags, "none", devpointer->flags));
+ printf("\n");
+ devpointer = devpointer->next;
+ }
+ }
+ exit(0);
+}
+#endif /* HAVE_PCAP_FINDALLDEVS */
+
/*
* Set up flags that might or might not be supported depending on the
* version of libpcap we're using.
#define U_FLAG
#endif
+#ifdef HAVE_PCAP_SETDIRECTION
+#define Q_FLAG "Q:"
+#else
+#define Q_FLAG
+#endif
+
#ifndef WIN32
/* Drop root privileges and chroot if necessary */
static void
fprintf(stderr, "tcpdump: Chroot without dropping root is insecure\n");
exit(1);
}
-
+
pw = getpwnam(username);
if (pw) {
if (chroot_dir) {
if (initgroups(pw->pw_name, pw->pw_gid) != 0 ||
setgid(pw->pw_gid) != 0 || setuid(pw->pw_uid) != 0) {
fprintf(stderr, "tcpdump: Couldn't change to '%.32s' uid=%lu gid=%lu: %s\n",
- username,
+ username,
(unsigned long)pw->pw_uid,
(unsigned long)pw->pw_gid,
pcap_strerror(errno));
static int tcpdump_printf(netdissect_options *ndo _U_,
const char *fmt, ...)
{
-
+
va_list args;
int ret;
gndo->ndo_error=ndo_error;
gndo->ndo_warning=ndo_warning;
gndo->ndo_snaplen = DEFAULT_SNAPLEN;
-
+
cnt = -1;
device = NULL;
infile = NULL;
#endif
while (
- (op = getopt(argc, argv, "aAb" B_FLAG "c:C:d" D_FLAG "eE:fF:G:hHi:" I_FLAG j_FLAG J_FLAG "KlLm:M:nNOpqr:Rs:StT:u" U_FLAG "V:vw:W:xXy:Yz:Z:")) != -1)
+ (op = getopt(argc, argv, "aAb" B_FLAG "c:C:d" D_FLAG "eE:fF:G:hHi:" I_FLAG j_FLAG J_FLAG "KlLm:M:nNOpq" Q_FLAG "r:Rs:StT:u" U_FLAG "vV:w:W:xXy:Yz:Z:")) != -1)
switch (op) {
case 'a':
++dflag;
break;
-#ifdef HAVE_PCAP_FINDALLDEVS
case 'D':
- if (pcap_findalldevs(&devpointer, ebuf) < 0)
- error("%s", ebuf);
- else {
- for (i = 0; devpointer != 0; i++) {
- printf("%d.%s", i+1, devpointer->name);
- if (devpointer->description != NULL)
- printf(" (%s)", devpointer->description);
- printf("\n");
- devpointer = devpointer->next;
- }
- }
- return 0;
-#endif /* HAVE_PCAP_FINDALLDEVS */
+ Dflag++;
+ break;
case 'L':
Lflag++;
case 'i':
if (optarg[0] == '0' && optarg[1] == 0)
error("Invalid adapter index");
-
+
#ifdef HAVE_PCAP_FINDALLDEVS
/*
* If the argument is a number, treat it as
++suppress_default_print;
break;
+#ifdef HAVE_PCAP_SETDIRECTION
+ case 'Q':
+ if (strcasecmp(optarg, "in") == 0)
+ Qflag = PCAP_D_IN;
+ else if (strcasecmp(optarg, "out") == 0)
+ Qflag = PCAP_D_OUT;
+ else if (strcasecmp(optarg, "inout") == 0)
+ Qflag = PCAP_D_INOUT;
+ else
+ error("unknown capture direction `%s'", optarg);
+ break;
+#endif /* HAVE_PCAP_SETDIRECTION */
+
case 'r':
RFileName = optarg;
break;
packettype = PT_PGM;
else if (strcasecmp(optarg, "pgm_zmtp1") == 0)
packettype = PT_PGM_ZMTP1;
+ else if (strcasecmp(optarg, "lmp") == 0)
+ packettype = PT_LMP;
else
error("unknown packet type `%s'", optarg);
break;
case 'W':
Wflag = atoi(optarg);
- if (Wflag < 0)
+ if (Wflag < 0)
error("invalid number of output files %s", optarg);
WflagChars = getWflagChars(Wflag);
break;
break;
#endif
case 'z':
- if (optarg) {
- zflag = strdup(optarg);
- } else {
- usage();
- /* NOTREACHED */
- }
+ zflag = strdup(optarg);
break;
case 'Z':
- if (optarg) {
- username = strdup(optarg);
- }
- else {
- usage();
- /* NOTREACHED */
- }
+ username = strdup(optarg);
break;
default:
/* NOTREACHED */
}
+#ifdef HAVE_PCAP_FINDALLDEVS
+ if (Dflag)
+ show_devices_and_exit();
+#endif
+
switch (tflag) {
case 0: /* Default */
#ifdef WITH_USER
/* if run as root, prepare for dropping root privileges */
if (getuid() == 0 || geteuid() == 0) {
- /* Run with '-Z root' to restore old behaviour */
+ /* Run with '-Z root' to restore old behaviour */
if (!username)
username = WITH_USER;
}
fprintf(stderr, "%s: listening on %s\n", program_name, device);
}
- fflush(stderr);
+ fflush(stderr);
#endif /* WIN32 */
#ifdef HAVE_PCAP_CREATE
pd = pcap_create(device, ebuf);
warning("%s: %s", device,
pcap_statustostr(status));
}
+#ifdef HAVE_PCAP_SETDIRECTION
+ if (Qflag != -1) {
+ status = pcap_setdirection(pd, Qflag);
+ if (status != 0)
+ error("%s: pcap_setdirection() failed: %s",
+ device, pcap_geterr(pd));
+ }
+#endif /* HAVE_PCAP_SETDIRECTION */
#else
*ebuf = '\0';
pd = pcap_open_live(device, snaplen, !pflag, 1000, ebuf);
init_addrtoname(localnet, netmask);
init_checksum();
-#ifndef WIN32
+#ifndef WIN32
(void)setsignal(SIGPIPE, cleanup);
(void)setsignal(SIGTERM, cleanup);
(void)setsignal(SIGINT, cleanup);
(void)setsignal(SIGCHLD, child_cleanup);
#endif
/* Cooperate with nohup(1) */
-#ifndef WIN32
+#ifndef WIN32
if ((oldhandler = setsignal(SIGHUP, cleanup)) != SIG_DFL)
(void)setsignal(SIGHUP, oldhandler);
#endif /* WIN32 */
dump_info->CurrentFileName = (char *)malloc(PATH_MAX + 1);
if (dump_info->CurrentFileName == NULL)
error("dump_packet_and_trunc: malloc");
+ /*
+ * Gflag was set otherwise we wouldn't be here. Reset the count
+ * so multiple files would end with 1,2,3 in the filename.
+ * The counting is handled with the -C flow after this.
+ */
+ Cflag_count = 0;
+
/*
* This is always the first file in the Cflag
* rotation: e.g. 0
{
struct print_info *print_info;
u_int hdrlen;
+ netdissect_options *ndo;
++packets_captured;
ts_print(&h->ts);
print_info = (struct print_info *)user;
+ ndo = print_info->ndo;
/*
* Some printers want to check that they're not walking off the
* end of the packet.
* Rather than pass it all the way down, we set this global.
*/
- snapend = sp + h->caplen;
+ ndo->ndo_snapend = sp + h->caplen;
if(print_info->ndo_type) {
hdrlen = (*print_info->p.ndo_printer)(print_info->ndo, h, sp);
} else {
hdrlen = (*print_info->p.printer)(h, sp);
}
-
- if (Xflag) {
+
+ if (ndo->ndo_Xflag) {
/*
* Print the raw packet data in hex and ASCII.
*/
- if (Xflag > 1) {
+ if (ndo->ndo_Xflag > 1) {
/*
* Include the link-layer header.
*/
hex_and_ascii_print("\n\t", sp + hdrlen,
h->caplen - hdrlen);
}
- } else if (xflag) {
+ } else if (ndo->ndo_xflag) {
/*
* Print the raw packet data in hex.
*/
- if (xflag > 1) {
+ if (ndo->ndo_xflag > 1) {
/*
* Include the link-layer header.
*/
- hex_print("\n\t", sp, h->caplen);
+ hex_print(ndo, "\n\t", sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* print nothing.
*/
if (h->caplen > hdrlen)
- hex_print("\n\t", sp + hdrlen,
- h->caplen - hdrlen);
+ hex_print(ndo, "\n\t", sp + hdrlen,
+ h->caplen - hdrlen);
}
- } else if (Aflag) {
+ } else if (ndo->ndo_Aflag) {
/*
* Print the raw packet data in ASCII.
*/
- if (Aflag > 1) {
+ if (ndo->ndo_Aflag > 1) {
/*
* Include the link-layer header.
*/
* version number of the Packet.dll code, to supply the
* "Wpcap_version" information on Windows.
*/
- char WDversion[]="current-cvs.tcpdump.org";
+ char WDversion[]="current-git.tcpdump.org";
#if !defined(HAVE_GENERATED_VERSION)
- char version[]="current-cvs.tcpdump.org";
+ char version[]="current-git.tcpdump.org";
#endif
- char pcap_version[]="current-cvs.tcpdump.org";
+ char pcap_version[]="current-git.tcpdump.org";
char Wpcap_version[]="3.1";
#endif
"\t\t[ -C file_size ] [ -E algo:secret ] [ -F file ] [ -G seconds ]\n");
(void)fprintf(stderr,
"\t\t[ -i interface ]" j_FLAG_USAGE " [ -M secret ]\n");
+#ifdef HAVE_PCAP_SETDIRECTION
+ (void)fprintf(stderr,
+"\t\t[ -Q in|out|inout ]\n");
+#endif
(void)fprintf(stderr,
"\t\t[ -r file ] [ -s snaplen ] [ -T type ] [ -V file ] [ -w file ]\n");
(void)fprintf(stderr,
(void)fputc('\n', stderr);
}
}
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */
projects / tcpdump / blobdiff