*/
-#ifndef lint
-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";
-#endif
-
/*
* tcpdump - dump traffic on a network
*
*/
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
/*
- * Mac OS X may ship pcap.h from libpcap 0.6 with a libpcap based on
- * 0.8. That means it has pcap_findalldevs() but the header doesn't
- * define pcap_if_t, meaning that we can't actually *use* pcap_findalldevs().
+ * Some older versions of Mac OS X may ship pcap.h from libpcap 0.6 with a
+ * libpcap based on 0.8. That means it has pcap_findalldevs() but the
+ * header doesn't define pcap_if_t, meaning that we can't actually *use*
+ * pcap_findalldevs().
*/
#ifdef HAVE_PCAP_FINDALLDEVS
#ifndef HAVE_PCAP_IF_T
#endif
#endif
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
+
+/*
+ * This must appear after including netdissect-stdinc.h, so that _U_ is
+ * defined.
+ */
+#ifndef lint
+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";
+#endif
#include <sys/stat.h>
#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#else
-#include "getopt_long.h"
+#include "missing/getopt_long.h"
#endif
/* Capsicum-specific code requires macros from <net/bpf.h>, which will fail
* to compile if <pcap.h> has already been included; including the headers
* in the opposite order works fine.
*/
#ifdef HAVE_CAPSICUM
-#include <sys/capability.h>
+#include <sys/capsicum.h>
#include <sys/ioccom.h>
#include <net/bpf.h>
#include <libgen.h>
#include <sys/nv.h>
#endif /* HAVE_CASPER */
#endif /* HAVE_CAPSICUM */
+#ifdef HAVE_PCAP_OPEN
+#define HAVE_REMOTE
+#endif
#include <pcap.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
-#ifndef _WIN32
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <sys/time.h>
#include <sys/wait.h>
#include <sys/resource.h>
#include <pwd.h>
#endif /* HAVE_CAP_NG_H */
#endif /* HAVE_LIBCAP_NG */
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#endif /* __FreeBSD__ */
+
#include "netdissect.h"
#include "interface.h"
#include "addrtoname.h"
#include "machdep.h"
-#include "setsignal.h"
-#include "gmt2local.h"
#include "pcap-missing.h"
#include "ascii_strcasecmp.h"
#define PATH_MAX 1024
#endif
-#ifdef SIGINFO
+#if defined(SIGINFO)
#define SIGNAL_REQ_INFO SIGINFO
-#elif SIGUSR1
+#elif defined(SIGUSR1)
#define SIGNAL_REQ_INFO SIGUSR1
#endif
+#if defined(HAVE_PCAP_DUMP_FLUSH) && defined(SIGUSR2)
+#define SIGNAL_FLUSH_PCAP SIGUSR2
+#endif
+
+#if defined(HAVE_PCAP_CREATE) || defined(_WIN32)
static int Bflag; /* buffer size */
-static int Cflag; /* rotate dump files after this many bytes */
+#endif
+#ifdef HAVE_PCAP_DUMP_FTELL64
+static int64_t Cflag; /* rotate dump files after this many bytes */
+#else
+static long Cflag; /* rotate dump files after this many bytes */
+#endif
static int Cflag_count; /* Keep track of which file number we're writing */
+#ifdef HAVE_PCAP_FINDALLDEVS
static int Dflag; /* list available devices and exit */
+#endif
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+static char *remote_interfaces_source; /* list available devices from this source and exit */
+#endif
+
/*
* This is exported because, in some versions of libpcap, if libpcap
* is built with optimizer debugging code (which is *NOT* the default
static int Iflag; /* rfmon (monitor) mode */
#ifdef HAVE_PCAP_SET_TSTAMP_TYPE
static int Jflag; /* list available time stamp types */
-#endif
static int jflag = -1; /* packet time stamp source */
+#endif
static int pflag; /* don't go promiscuous */
#ifdef HAVE_PCAP_SETDIRECTION
static int Qflag = -1; /* restrict captured packet by send/receive direction */
#endif
+#ifdef HAVE_PCAP_DUMP_FLUSH
static int Uflag; /* "unbuffered" output of dump files */
+#endif
static int Wflag; /* recycle output files after this number of files */
static int WflagChars;
static char *zflag = NULL; /* compress each savefile using a specified command (like gzip or bzip2) */
+#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
static int immediate_mode;
+#endif
static int infodelay;
static int infoprint;
#endif
/* Forwards */
-static void error(const char *, ...)
- __attribute__((noreturn))
-#ifdef __ATTRIBUTE___FORMAT_OK
- __attribute__((format (printf, 1, 2)))
-#endif /* __ATTRIBUTE___FORMAT_OK */
- ;
-static void warning(const char *, ...)
-#ifdef __ATTRIBUTE___FORMAT_OK
- __attribute__((format (printf, 1, 2)))
-#endif /* __ATTRIBUTE___FORMAT_OK */
- ;
-static void exit_tcpdump(int) __attribute__((noreturn));
-static RETSIGTYPE cleanup(int);
-static RETSIGTYPE child_cleanup(int);
+static NORETURN void error(FORMAT_STRING(const char *), ...) PRINTFLIKE(1, 2);
+static void warning(FORMAT_STRING(const char *), ...) PRINTFLIKE(1, 2);
+static NORETURN void exit_tcpdump(int);
+static void (*setsignal (int sig, void (*func)(int)))(int);
+static void cleanup(int);
+static void child_cleanup(int);
static void print_version(void);
static void print_usage(void);
-static void show_tstamp_types_and_exit(pcap_t *, const char *device) __attribute__((noreturn));
-static void show_dlts_and_exit(pcap_t *, const char *device) __attribute__((noreturn));
+#ifdef HAVE_PCAP_SET_TSTAMP_TYPE
+static NORETURN void show_tstamp_types_and_exit(pcap_t *, const char *device);
+#endif
+static NORETURN void show_dlts_and_exit(pcap_t *, const char *device);
#ifdef HAVE_PCAP_FINDALLDEVS
-static void show_devices_and_exit (void) __attribute__((noreturn));
+static NORETURN void show_devices_and_exit(void);
+#endif
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+static NORETURN void show_remote_devices_and_exit(void);
#endif
static void print_packet(u_char *, const struct pcap_pkthdr *, const u_char *);
static void droproot(const char *, const char *);
#ifdef SIGNAL_REQ_INFO
-RETSIGTYPE requestinfo(int);
+static void requestinfo(int);
#endif
-#if defined(USE_WIN32_MM_TIMER)
- #include <MMsystem.h>
- static UINT timer_id;
- static void CALLBACK verbose_stats_dump(UINT, UINT, DWORD_PTR, DWORD_PTR, DWORD_PTR);
-#elif defined(HAVE_ALARM)
- static void verbose_stats_dump(int sig);
+#ifdef SIGNAL_FLUSH_PCAP
+static void flushpcap(int);
#endif
+#ifdef _WIN32
+ static HANDLE timer_handle = INVALID_HANDLE_VALUE;
+ static void CALLBACK verbose_stats_dump(PVOID param, BOOLEAN timer_fired);
+#else /* _WIN32 */
+ static void verbose_stats_dump(int sig);
+#endif /* _WIN32 */
+
static void info(int);
static u_int packets_captured;
{ PCAP_IF_RUNNING, "Running" },
#endif
{ PCAP_IF_LOOPBACK, "Loopback" },
+#ifdef PCAP_IF_WIRELESS
+ { PCAP_IF_WIRELESS, "Wireless" },
+#endif
{ 0, NULL }
};
#endif
static pcap_t *pd;
+static pcap_dumper_t *pdd = NULL;
static int supports_monitor_mode;
char *WFileName;
char *CurrentFileName;
pcap_t *pd;
- pcap_dumper_t *p;
+ pcap_dumper_t *pdd;
+ netdissect_options *ndo;
#ifdef HAVE_CAPSICUM
int dirfd;
#endif
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
- exit_tcpdump(1);
+ exit_tcpdump(S_ERR_HOST_PROGRAM);
/* NOTREACHED */
}
if (n_tstamp_types == 0) {
fprintf(stderr, "Time stamp type cannot be set for %s\n",
device);
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
}
fprintf(stderr, "Time stamp types for %s (use option -j to set):\n",
device);
}
}
pcap_free_tstamp_types(tstamp_types);
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
}
#endif
#ifdef HAVE_PCAP_FREE_DATALINKS
pcap_free_datalinks(dlts);
#endif
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
}
#ifdef HAVE_PCAP_FINDALLDEVS
static void
-show_devices_and_exit (void)
+show_devices_and_exit(void)
{
pcap_if_t *dev, *devlist;
char ebuf[PCAP_ERRBUF_SIZE];
if (pcap_findalldevs(&devlist, ebuf) < 0)
error("%s", ebuf);
+ for (i = 0, dev = devlist; dev != NULL; i++, dev = dev->next) {
+ printf("%d.%s", i+1, dev->name);
+ if (dev->description != NULL)
+ printf(" (%s)", dev->description);
+ if (dev->flags != 0) {
+ printf(" [");
+ printf("%s", bittok2str(status_flags, "none", dev->flags));
+#ifdef PCAP_IF_WIRELESS
+ if (dev->flags & PCAP_IF_WIRELESS) {
+ switch (dev->flags & PCAP_IF_CONNECTION_STATUS) {
+
+ case PCAP_IF_CONNECTION_STATUS_UNKNOWN:
+ printf(", Association status unknown");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_CONNECTED:
+ printf(", Associated");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_DISCONNECTED:
+ printf(", Not associated");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE:
+ break;
+ }
+ } else {
+ switch (dev->flags & PCAP_IF_CONNECTION_STATUS) {
+
+ case PCAP_IF_CONNECTION_STATUS_UNKNOWN:
+ printf(", Connection status unknown");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_CONNECTED:
+ printf(", Connected");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_DISCONNECTED:
+ printf(", Disconnected");
+ break;
+
+ case PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE:
+ break;
+ }
+ }
+#endif
+ printf("]");
+ }
+ printf("\n");
+ }
+ pcap_freealldevs(devlist);
+ exit_tcpdump(S_SUCCESS);
+}
+#endif /* HAVE_PCAP_FINDALLDEVS */
+
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+static void
+show_remote_devices_and_exit(void)
+{
+ pcap_if_t *dev, *devlist;
+ char ebuf[PCAP_ERRBUF_SIZE];
+ int i;
+
+ if (pcap_findalldevs_ex(remote_interfaces_source, NULL, &devlist,
+ ebuf) < 0)
+ error("%s", ebuf);
for (i = 0, dev = devlist; dev != NULL; i++, dev = dev->next) {
printf("%d.%s", i+1, dev->name);
if (dev->description != NULL)
printf("\n");
}
pcap_freealldevs(devlist);
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
}
#endif /* HAVE_PCAP_FINDALLDEVS */
* only use them for the same purposes that the other versions of tcpdump
* use them:
*
- * OS X tcpdump uses -g to force non--v output for IP to be on one
+ * macOS tcpdump uses -g to force non--v output for IP to be on one
* line, making it more "g"repable;
*
- * OS X tcpdump uses -k to specify that packet comments in pcap-ng files
+ * macOS tcpdump uses -k to specify that packet comments in pcapng files
* should be printed;
*
* OpenBSD tcpdump uses -o to indicate that OS fingerprinting should be done
* for hosts sending TCP SYN packets;
*
- * OS X tcpdump uses -P to indicate that -w should write pcap-ng rather
+ * macOS tcpdump uses -P to indicate that -w should write pcapng rather
* than pcap files.
*
- * OS X tcpdump also uses -Q to specify expressions that match packet
+ * macOS tcpdump also uses -Q to specify expressions that match packet
* metadata, including but not limited to the packet direction.
* The expression syntax is different from a simple "in|out|inout",
- * and those expressions aren't accepted by OS X tcpdump, but the
+ * and those expressions aren't accepted by macOS tcpdump, but the
* equivalents would be "in" = "dir=in", "out" = "dir=out", and
* "inout" = "dir=in or dir=out", and the parser could conceivably
* special-case "in", "out", and "inout" as expressions for backwards
#define B_FLAG_USAGE
#endif /* defined(HAVE_PCAP_CREATE) || defined(_WIN32) */
+#ifdef HAVE_PCAP_FINDALLDEVS
+#define D_FLAG "D"
+#else
+#define D_FLAG
+#endif
+
#ifdef HAVE_PCAP_CREATE
#define I_FLAG "I"
#else /* HAVE_PCAP_CREATE */
#define J_FLAG
#endif /* PCAP_ERROR_TSTAMP_TYPE_NOTSUP */
-#ifdef HAVE_PCAP_FINDALLDEVS
-#define D_FLAG "D"
+#ifdef USE_LIBSMI
+#define m_FLAG_USAGE "[ -m module ] ..."
+#endif
+
+#ifdef HAVE_PCAP_SETDIRECTION
+#define Q_FLAG "Q:"
+#define Q_FLAG_USAGE " [ -Q in|out|inout ]"
#else
-#define D_FLAG
+#define Q_FLAG
+#define Q_FLAG_USAGE
#endif
#ifdef HAVE_PCAP_DUMP_FLUSH
#define U_FLAG
#endif
-#ifdef HAVE_PCAP_SETDIRECTION
-#define Q_FLAG "Q:"
-#else
-#define Q_FLAG
-#endif
-
#define SHORTOPTS "aAb" B_FLAG "c:C:d" D_FLAG "eE:fF:G:hHi:" I_FLAG j_FLAG J_FLAG "KlLm:M:nNOpq" Q_FLAG "r:s:StT:u" U_FLAG "vV:w:W:xXy:Yz:Z:#"
/*
* component of the entry for the long option, and have a case for that
* option in the switch statement.
*/
-#define OPTION_VERSION 128
-#define OPTION_TSTAMP_PRECISION 129
-#define OPTION_IMMEDIATE_MODE 130
+#define OPTION_VERSION 128
+#define OPTION_TSTAMP_PRECISION 129
+#define OPTION_IMMEDIATE_MODE 130
+#define OPTION_PRINT 131
+#define OPTION_LIST_REMOTE_INTERFACES 132
static const struct option longopts[] = {
#if defined(HAVE_PCAP_CREATE) || defined(_WIN32)
{ "buffer-size", required_argument, NULL, 'B' },
#endif
{ "list-interfaces", no_argument, NULL, 'D' },
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+ { "list-remote-interfaces", required_argument, NULL, OPTION_LIST_REMOTE_INTERFACES },
+#endif
{ "help", no_argument, NULL, 'h' },
{ "interface", required_argument, NULL, 'i' },
#ifdef HAVE_PCAP_CREATE
#endif
{ "relinquish-privileges", required_argument, NULL, 'Z' },
{ "number", no_argument, NULL, '#' },
+ { "print", no_argument, NULL, OPTION_PRINT },
{ "version", no_argument, NULL, OPTION_VERSION },
{ NULL, 0, NULL, 0 }
};
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+#define LIST_REMOTE_INTERFACES_USAGE "[ --list-remote-interfaces remote-source ]"
+#else
+#define LIST_REMOTE_INTERFACES_USAGE
+#endif
+
+#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
+#define IMMEDIATE_MODE_USAGE " [ --immediate-mode ]"
+#else
+#define IMMEDIATE_MODE_USAGE ""
+#endif
+
+#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
+#define TIME_STAMP_PRECISION_USAGE " [ --time-stamp-precision precision ]"
+#else
+#define TIME_STAMP_PRECISION_USAGE
+#endif
+
#ifndef _WIN32
/* Drop root privileges and chroot if necessary */
static void
{
struct passwd *pw = NULL;
- if (chroot_dir && !username) {
- fprintf(stderr, "%s: Chroot without dropping root is insecure\n",
- program_name);
- exit_tcpdump(1);
- }
+ if (chroot_dir && !username)
+ error("Chroot without dropping root is insecure");
pw = getpwnam(username);
if (pw) {
if (chroot_dir) {
- if (chroot(chroot_dir) != 0 || chdir ("/") != 0) {
- fprintf(stderr, "%s: Couldn't chroot/chdir to '%.64s': %s\n",
- program_name, chroot_dir, pcap_strerror(errno));
- exit_tcpdump(1);
- }
+ if (chroot(chroot_dir) != 0 || chdir ("/") != 0)
+ error("Couldn't chroot/chdir to '%.64s': %s",
+ chroot_dir, pcap_strerror(errno));
}
#ifdef HAVE_LIBCAP_NG
{
int ret = capng_change_id(pw->pw_uid, pw->pw_gid, CAPNG_NO_FLAG);
- if (ret < 0) {
- fprintf(stderr, "error : ret %d\n", ret);
- } else {
+ if (ret < 0)
+ error("capng_change_id(): return %d\n", ret);
+ else
fprintf(stderr, "dropped privs to %s\n", username);
- }
}
#else
if (initgroups(pw->pw_name, pw->pw_gid) != 0 ||
- setgid(pw->pw_gid) != 0 || setuid(pw->pw_uid) != 0) {
- fprintf(stderr, "%s: Couldn't change to '%.32s' uid=%lu gid=%lu: %s\n",
- program_name, username,
+ setgid(pw->pw_gid) != 0 || setuid(pw->pw_uid) != 0)
+ error("Couldn't change to '%.32s' uid=%lu gid=%lu: %s",
+ username,
(unsigned long)pw->pw_uid,
(unsigned long)pw->pw_gid,
pcap_strerror(errno));
- exit_tcpdump(1);
- }
else {
fprintf(stderr, "dropped privs to %s\n", username);
}
#endif /* HAVE_LIBCAP_NG */
- }
- else {
- fprintf(stderr, "%s: Couldn't find user '%.32s'\n",
- program_name, username);
- exit_tcpdump(1);
- }
+ } else
+ error("Couldn't find user '%.32s'", username);
#ifdef HAVE_LIBCAP_NG
/* We don't need CAP_SETUID, CAP_SETGID and CAP_SYS_CHROOT any more. */
+DIAG_OFF_CLANG(assign-enum)
capng_updatev(
CAPNG_DROP,
CAPNG_EFFECTIVE | CAPNG_PERMITTED,
CAP_SETGID,
CAP_SYS_CHROOT,
-1);
+DIAG_ON_CLANG(assign-enum)
capng_apply(CAPNG_SELECT_BOTH);
#endif /* HAVE_LIBCAP_NG */
if (cnt == 0 && max_chars == 0)
strncpy(buffer, filename, PATH_MAX + 1);
else
- if (snprintf(buffer, PATH_MAX + 1, "%s%0*d", filename, max_chars, cnt) > PATH_MAX)
+ if (nd_snprintf(buffer, PATH_MAX + 1, "%s%0*d", filename, max_chars, cnt) > PATH_MAX)
/* Report an error if the filename is too large */
error("too many output files or filename is too long (> %d)", PATH_MAX);
free(filename);
* Copy arg vector into a new buffer, concatenating arguments with spaces.
*/
static char *
-copy_argv(register char **argv)
+copy_argv(char **argv)
{
- register char **p;
- register u_int len = 0;
+ char **p;
+ size_t len = 0;
char *buf;
char *src, *dst;
static char *
read_infile(char *fname)
{
- register int i, fd, cc;
- register char *cp;
+ int i, fd, cc;
+ char *cp;
struct stat buf;
fd = open(fname, O_RDONLY|O_BINARY);
static long
parse_interface_number(const char *device)
{
+ const char *p;
long devnum;
char *end;
+ /*
+ * Search for a colon, terminating any scheme at the beginning
+ * of the device.
+ */
+ p = strchr(device, ':');
+ if (p != NULL) {
+ /*
+ * We found it. Is it followed by "//"?
+ */
+ p++; /* skip the : */
+ if (strncmp(p, "//", 2) == 0) {
+ /*
+ * Yes. Search for the next /, at the end of the
+ * authority part of the URL.
+ */
+ p += 2; /* skip the // */
+ p = strchr(p, '/');
+ if (p != NULL) {
+ /*
+ * OK, past the / is the path.
+ */
+ device = p + 1;
+ }
+ }
+ }
devnum = strtol(device, &end, 10);
if (device != end && *end == '\0') {
/*
}
static char *
-find_interface_by_number(long devnum)
+find_interface_by_number(const char *url
+#ifndef HAVE_PCAP_FINDALLDEVS_EX
+_U_
+#endif
+, long devnum)
{
pcap_if_t *dev, *devlist;
long i;
char ebuf[PCAP_ERRBUF_SIZE];
char *device;
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+ const char *endp;
+ char *host_url;
+#endif
+ int status;
- if (pcap_findalldevs(&devlist, ebuf) < 0)
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+ /*
+ * Search for a colon, terminating any scheme at the beginning
+ * of the URL.
+ */
+ endp = strchr(url, ':');
+ if (endp != NULL) {
+ /*
+ * We found it. Is it followed by "//"?
+ */
+ endp++; /* skip the : */
+ if (strncmp(endp, "//", 2) == 0) {
+ /*
+ * Yes. Search for the next /, at the end of the
+ * authority part of the URL.
+ */
+ endp += 2; /* skip the // */
+ endp = strchr(endp, '/');
+ } else
+ endp = NULL;
+ }
+ if (endp != NULL) {
+ /*
+ * OK, everything from device to endp is a URL to hand
+ * to pcap_findalldevs_ex().
+ */
+ endp++; /* Include the trailing / in the URL; pcap_findalldevs_ex() requires it */
+ host_url = malloc(endp - url + 1);
+ if (host_url == NULL && (endp - url + 1) > 0)
+ error("Invalid allocation for host");
+
+ memcpy(host_url, url, endp - url);
+ host_url[endp - url] = '\0';
+ status = pcap_findalldevs_ex(host_url, NULL, &devlist, ebuf);
+ free(host_url);
+ } else
+#endif
+ status = pcap_findalldevs(&devlist, ebuf);
+ if (status < 0)
error("%s", ebuf);
/*
* Look for the devnum-th entry in the list of devices (1-based).
}
#endif
+#ifdef HAVE_PCAP_OPEN
+/*
+ * Prefixes for rpcap URLs.
+ */
+static char rpcap_prefix[] = "rpcap://";
+static char rpcap_ssl_prefix[] = "rpcaps://";
+#endif
+
static pcap_t *
open_interface(const char *device, netdissect_options *ndo, char *ebuf)
{
char *cp;
#endif
+#ifdef HAVE_PCAP_OPEN
+ /*
+ * Is this an rpcap URL?
+ */
+ if (strncmp(device, rpcap_prefix, sizeof(rpcap_prefix) - 1) == 0 ||
+ strncmp(device, rpcap_ssl_prefix, sizeof(rpcap_ssl_prefix) - 1) == 0) {
+ /*
+ * Yes. Open it with pcap_open().
+ */
+ *ebuf = '\0';
+ pc = pcap_open(device, ndo->ndo_snaplen,
+ pflag ? 0 : PCAP_OPENFLAG_PROMISCUOUS, 1000, NULL,
+ ebuf);
+ if (pc == NULL) {
+ /*
+ * If this failed with "No such device" or "The system
+ * cannot find the device specified", that means
+ * the interface doesn't exist; return NULL, so that
+ * the caller can see whether the device name is
+ * actually an interface index.
+ */
+ if (strstr(ebuf, "No such device") != NULL ||
+ strstr(ebuf, "The system cannot find the device specified") != NULL)
+ return (NULL);
+ error("%s", ebuf);
+ }
+ if (*ebuf)
+ warning("%s", ebuf);
+ return (pc);
+ }
+#endif /* HAVE_PCAP_OPEN */
+
#ifdef HAVE_PCAP_CREATE
pc = pcap_create(device, ebuf);
if (pc == NULL) {
status = pcap_set_tstamp_precision(pc, ndo->ndo_tstamp_precision);
if (status != 0)
error("%s: Can't set %ssecond time stamp precision: %s",
- device,
- tstamp_precision_to_string(ndo->ndo_tstamp_precision),
- pcap_statustostr(status));
+ device,
+ tstamp_precision_to_string(ndo->ndo_tstamp_precision),
+ pcap_statustostr(status));
#endif
#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
status = pcap_set_immediate_mode(pc, 1);
if (status != 0)
error("%s: Can't set immediate mode: %s",
- device,
- pcap_statustostr(status));
+ device, pcap_statustostr(status));
}
#endif
/*
supports_monitor_mode = 1;
else
supports_monitor_mode = 0;
- status = pcap_set_snaplen(pc, ndo->ndo_snaplen);
- if (status != 0)
- error("%s: Can't set snapshot length: %s",
- device, pcap_statustostr(status));
+ if (ndo->ndo_snaplen != 0) {
+ /*
+ * A snapshot length was explicitly specified;
+ * use it.
+ */
+ status = pcap_set_snaplen(pc, ndo->ndo_snaplen);
+ if (status != 0)
+ error("%s: Can't set snapshot length: %s",
+ device, pcap_statustostr(status));
+ }
status = pcap_set_promisc(pc, !pflag);
if (status != 0)
error("%s: Can't set promiscuous mode: %s",
status = pcap_set_tstamp_type(pc, jflag);
if (status < 0)
error("%s: Can't set time stamp type: %s",
- device, pcap_statustostr(status));
+ device, pcap_statustostr(status));
+ else if (status > 0)
+ warning("When trying to set timestamp type '%s' on %s: %s",
+ pcap_tstamp_type_val_to_name(jflag), device,
+ pcap_statustostr(status));
}
#endif
status = pcap_activate(pc);
/*
* Return an error for our caller to handle.
*/
- pcap_close(pc);
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s\n(%s)",
+ nd_snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s\n(%s)",
device, pcap_statustostr(status), cp);
+ pcap_close(pc);
return (NULL);
} else if (status == PCAP_ERROR_PERM_DENIED && *cp != '\0')
error("%s: %s\n(%s)", device,
pcap_statustostr(status), cp);
+#ifdef __FreeBSD__
+ else if (status == PCAP_ERROR_RFMON_NOTSUP &&
+ strncmp(device, "wlan", 4) == 0) {
+ char parent[8], newdev[8];
+ char sysctl[32];
+ size_t s = sizeof(parent);
+
+ nd_snprintf(sysctl, sizeof(sysctl),
+ "net.wlan.%d.%%parent", atoi(device + 4));
+ sysctlbyname(sysctl, parent, &s, NULL, 0);
+ strlcpy(newdev, device, sizeof(newdev));
+ /* Suggest a new wlan device. */
+ /* FIXME: incrementing the index this way is not going to work well
+ * when the index is 9 or greater but the only consequence in this
+ * specific case would be an error message that looks a bit odd.
+ */
+ newdev[strlen(newdev)-1]++;
+ error("%s is not a monitor mode VAP\n"
+ "To create a new monitor mode VAP use:\n"
+ " ifconfig %s create wlandev %s wlanmode monitor\n"
+ "and use %s as the tcpdump interface",
+ device, newdev, parent, newdev);
+ }
+#endif
else
error("%s: %s", device,
pcap_statustostr(status));
#endif /* HAVE_PCAP_SETDIRECTION */
#else /* HAVE_PCAP_CREATE */
*ebuf = '\0';
+ /*
+ * If no snapshot length was specified, or a length of 0 was
+ * specified, default to 256KB.
+ */
+ if (ndo->ndo_snaplen == 0)
+ ndo->ndo_snaplen = 262144;
pc = pcap_open_live(device, ndo->ndo_snaplen, !pflag, 1000, ebuf);
if (pc == NULL) {
/*
int
main(int argc, char **argv)
{
- register int cnt, op, i;
- bpf_u_int32 localnet =0 , netmask = 0;
- int timezone_offset = 0;
- register char *cp, *infile, *cmdbuf, *device, *RFileName, *VFileName, *WFileName;
+ int cnt, op, i;
+ bpf_u_int32 localnet = 0, netmask = 0;
+ char *cp, *infile, *cmdbuf, *device, *RFileName, *VFileName, *WFileName;
+ char *endp;
pcap_handler callback;
int dlt;
const char *dlt_name;
struct bpf_program fcode;
#ifndef _WIN32
- RETSIGTYPE (*oldhandler)(int);
+ void (*oldhandler)(int);
#endif
struct dump_info dumpinfo;
u_char *pcap_userdata;
int Oflag = 1; /* run filter code optimizer */
int yflag_dlt = -1;
const char *yflag_dlt_name = NULL;
+ int print = 0;
netdissect_options Ndo;
netdissect_options *ndo = &Ndo;
/*
* Initialize the netdissect code.
*/
- if (nd_init(ebuf, sizeof ebuf) == -1)
+ if (nd_init(ebuf, sizeof(ebuf)) == -1)
error("%s", ebuf);
memset(ndo, 0, sizeof(*ndo));
ndo_set_function_pointers(ndo);
- ndo->ndo_snaplen = DEFAULT_SNAPLEN;
cnt = -1;
device = NULL;
else
ndo->program_name = program_name = argv[0];
-#ifdef _WIN32
+#if defined(HAVE_PCAP_WSOCKINIT)
if (pcap_wsockinit() != 0)
error("Attempting to initialize Winsock failed");
-#endif /* _WIN32 */
+#elif defined(HAVE_WSOCKINIT)
+ if (wsockinit() != 0)
+ error("Attempting to initialize Winsock failed");
+#endif
/*
* On platforms where the CPU doesn't support unaligned loads,
break;
case 'C':
- Cflag = atoi(optarg) * 1000000;
- if (Cflag <= 0)
+ errno = 0;
+#ifdef HAVE_PCAP_DUMP_FTELL64
+ Cflag = strtoint64_t(optarg, &endp, 10);
+#else
+ Cflag = strtol(optarg, &endp, 10);
+#endif
+ if (endp == optarg || *endp != '\0' || errno != 0
+ || Cflag <= 0)
error("invalid file size %s", optarg);
+ /*
+ * Will multiplying it by 1000000 overflow?
+ */
+#ifdef HAVE_PCAP_DUMP_FTELL64
+ if (Cflag > INT64_T_CONSTANT(0x7fffffffffffffff) / 1000000)
+#else
+ if (Cflag > LONG_MAX / 1000000)
+#endif
+ error("file size %s is too large", optarg);
+ Cflag *= 1000000;
break;
case 'd':
++dflag;
break;
+#ifdef HAVE_PCAP_FINDALLDEVS
case 'D':
Dflag++;
break;
+#endif
+
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+ case OPTION_LIST_REMOTE_INTERFACES:
+ remote_interfaces_source = optarg;
+ break;
+#endif
case 'L':
Lflag++;
case 'h':
print_usage();
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
break;
case 'H':
case 'm':
if (nd_have_smi_support()) {
- if (nd_load_smi_module(optarg, ebuf, sizeof ebuf) == -1)
+ if (nd_load_smi_module(optarg, ebuf, sizeof(ebuf)) == -1)
error("%s", ebuf);
} else {
(void)fprintf(stderr, "%s: ignoring option `-m %s' ",
ndo->ndo_snaplen = strtol(optarg, &end, 0);
if (optarg == end || *end != '\0'
|| ndo->ndo_snaplen < 0 || ndo->ndo_snaplen > MAXIMUM_SNAPLEN)
- error("invalid snaplen %s", optarg);
- else if (ndo->ndo_snaplen == 0)
- ndo->ndo_snaplen = MAXIMUM_SNAPLEN;
+ error("invalid snaplen %s (must be >= 0 and <= %d)",
+ optarg, MAXIMUM_SNAPLEN);
break;
case 'S':
case OPTION_VERSION:
print_version();
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
break;
#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
break;
#endif
+ case OPTION_PRINT:
+ print = 1;
+ break;
+
default:
print_usage();
- exit_tcpdump(1);
+ exit_tcpdump(S_ERR_HOST_PROGRAM);
/* NOTREACHED */
}
if (Dflag)
show_devices_and_exit();
#endif
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
+ if (remote_interfaces_source != NULL)
+ show_remote_devices_and_exit();
+#endif
switch (ndo->ndo_tflag) {
case 0: /* Default */
- case 4: /* Default + Date*/
- timezone_offset = gmt2local(0);
- break;
-
case 1: /* No time stamp */
case 2: /* Unix timeval style */
- case 3: /* Microseconds since previous packet */
- case 5: /* Microseconds since first packet */
+ case 3: /* Microseconds/nanoseconds since previous packet */
+ case 4: /* Date + Default */
+ case 5: /* Microseconds/nanoseconds since first packet */
break;
default: /* Not supported */
#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
/*
* If we're printing dissected packets to the standard output
- * rather than saving raw packets to a file, and the standard
- * output is a terminal, use immediate mode, as the user's
- * probably expecting to see packets pop up immediately.
+ * and the standard output is a terminal, use immediate mode,
+ * as the user's probably expecting to see packets pop up
+ * immediately.
+ *
+ * XXX - set the timeout to a lower value, instead? If so,
+ * what value would be appropriate?
*/
- if (WFileName == NULL && isatty(1))
+ if ((WFileName == NULL || print) && isatty(1))
immediate_mode = 1;
#endif
#endif
dlt = pcap_datalink(pd);
dlt_name = pcap_datalink_val_to_name(dlt);
+ fprintf(stderr, "reading from file %s", RFileName);
if (dlt_name == NULL) {
- fprintf(stderr, "reading from file %s, link-type %u\n",
- RFileName, dlt);
+ fprintf(stderr, ", link-type %u", dlt);
} else {
- fprintf(stderr,
- "reading from file %s, link-type %s (%s)\n",
- RFileName, dlt_name,
- pcap_datalink_val_to_description(dlt));
+ fprintf(stderr, ", link-type %s (%s)", dlt_name,
+ pcap_datalink_val_to_description(dlt));
}
+ fprintf(stderr, ", snapshot length %d\n", pcap_snapshot(pd));
+#ifdef DLT_LINUX_SLL2
+ if (dlt == DLT_LINUX_SLL2)
+ fprintf(stderr, "Warning: interface names might be incorrect\n");
+#endif
} else {
/*
* We're doing a live capture.
* Find the list of interfaces, and pick
* the first interface.
*/
- if (pcap_findalldevs(&devlist, ebuf) >= 0 &&
- devlist != NULL) {
- device = strdup(devlist->name);
- pcap_freealldevs(devlist);
- }
+ if (pcap_findalldevs(&devlist, ebuf) == -1)
+ error("%s", ebuf);
+ if (devlist == NULL)
+ error("no interfaces available for capture");
+ device = strdup(devlist->name);
+ pcap_freealldevs(devlist);
#else /* HAVE_PCAP_FINDALLDEVS */
/*
* Use whatever interface pcap_lookupdev()
* chooses.
*/
device = pcap_lookupdev(ebuf);
-#endif
if (device == NULL)
error("%s", ebuf);
+#endif
}
/*
* find_interface_by_number() exits if it
* couldn't be found.
*/
- device = find_interface_by_number(devnum);
+ device = find_interface_by_number(device, devnum);
pd = open_interface(device, ndo, ebuf);
if (pd == NULL)
error("%s", ebuf);
}
/*
- * Let user own process after socket has been opened.
+ * Let user own process after capture device has
+ * been opened.
*/
#ifndef _WIN32
if (setgid(getgid()) != 0 || setuid(getuid()) != 0)
}
i = pcap_snapshot(pd);
if (ndo->ndo_snaplen < i) {
- warning("snaplen raised from %d to %d", ndo->ndo_snaplen, i);
+ if (ndo->ndo_snaplen != 0)
+ warning("snaplen raised from %d to %d", ndo->ndo_snaplen, i);
+ ndo->ndo_snaplen = i;
+ } else if (ndo->ndo_snaplen > i) {
+ warning("snaplen lowered from %d to %d", ndo->ndo_snaplen, i);
ndo->ndo_snaplen = i;
}
if(ndo->ndo_fflag != 0) {
pcap_close(pd);
free(cmdbuf);
pcap_freecode(&fcode);
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
}
#ifdef HAVE_CASPER
capdns = capdns_setup();
#endif /* HAVE_CASPER */
- init_print(ndo, localnet, netmask, timezone_offset);
+ init_print(ndo, localnet, netmask);
#ifndef _WIN32
(void)setsignal(SIGPIPE, cleanup);
(void)setsignal(SIGTERM, cleanup);
- (void)setsignal(SIGINT, cleanup);
#endif /* _WIN32 */
+ (void)setsignal(SIGINT, cleanup);
#if defined(HAVE_FORK) || defined(HAVE_VFORK)
(void)setsignal(SIGCHLD, child_cleanup);
#endif
/* Initialize capng */
capng_clear(CAPNG_SELECT_BOTH);
if (username) {
+DIAG_OFF_CLANG(assign-enum)
capng_updatev(
CAPNG_ADD,
CAPNG_PERMITTED | CAPNG_EFFECTIVE,
CAP_SETUID,
CAP_SETGID,
-1);
+DIAG_ON_CLANG(assign-enum)
}
if (chroot_dir) {
+DIAG_OFF_CLANG(assign-enum)
capng_update(
CAPNG_ADD,
CAPNG_PERMITTED | CAPNG_EFFECTIVE,
CAP_SYS_CHROOT
);
+DIAG_ON_CLANG(assign-enum)
}
if (WFileName) {
+DIAG_OFF_CLANG(assign-enum)
capng_update(
CAPNG_ADD,
CAPNG_PERMITTED | CAPNG_EFFECTIVE,
CAP_DAC_OVERRIDE
);
+DIAG_ON_CLANG(assign-enum)
}
capng_apply(CAPNG_SELECT_BOTH);
#endif /* HAVE_LIBCAP_NG */
if (pcap_setfilter(pd, &fcode) < 0)
error("%s", pcap_geterr(pd));
#ifdef HAVE_CAPSICUM
- if (RFileName == NULL && VFileName == NULL) {
+ if (RFileName == NULL && VFileName == NULL && pcap_fileno(pd) != -1) {
static const unsigned long cmds[] = { BIOCGSTATS, BIOCROTZBUF };
- cap_rights_init(&rights, CAP_IOCTL, CAP_READ);
+ /*
+ * The various libpcap devices use a combination of
+ * read (bpf), ioctl (bpf, netmap), poll (netmap)
+ * so we add the relevant access rights.
+ */
+ cap_rights_init(&rights, CAP_IOCTL, CAP_READ, CAP_EVENT);
if (cap_rights_limit(pcap_fileno(pd), &rights) < 0 &&
errno != ENOSYS) {
error("unable to limit pcap descriptor");
}
#endif
if (WFileName) {
- pcap_dumper_t *p;
/* Do not exceed the default PATH_MAX for files. */
dumpinfo.CurrentFileName = (char *)malloc(PATH_MAX + 1);
else
MakeFilename(dumpinfo.CurrentFileName, WFileName, 0, 0);
- p = pcap_dump_open(pd, dumpinfo.CurrentFileName);
+ pdd = pcap_dump_open(pd, dumpinfo.CurrentFileName);
#ifdef HAVE_LIBCAP_NG
/* Give up CAP_DAC_OVERRIDE capability.
* Only allow it to be restored if the -C or -G flag have been
);
capng_apply(CAPNG_SELECT_BOTH);
#endif /* HAVE_LIBCAP_NG */
- if (p == NULL)
+ if (pdd == NULL)
error("%s", pcap_geterr(pd));
#ifdef HAVE_CAPSICUM
- set_dumper_capsicum_rights(p);
+ set_dumper_capsicum_rights(pdd);
#endif
if (Cflag != 0 || Gflag != 0) {
#ifdef HAVE_CAPSICUM
#endif
callback = dump_packet_and_trunc;
dumpinfo.pd = pd;
- dumpinfo.p = p;
+ dumpinfo.pdd = pdd;
pcap_userdata = (u_char *)&dumpinfo;
} else {
callback = dump_packet;
- pcap_userdata = (u_char *)p;
+ dumpinfo.WFileName = WFileName;
+ dumpinfo.pd = pd;
+ dumpinfo.pdd = pdd;
+ pcap_userdata = (u_char *)&dumpinfo;
}
+ if (print) {
+ dlt = pcap_datalink(pd);
+ ndo->ndo_if_printer = get_if_printer(ndo, dlt);
+ dumpinfo.ndo = ndo;
+ } else
+ dumpinfo.ndo = NULL;
+
#ifdef HAVE_PCAP_DUMP_FLUSH
if (Uflag)
- pcap_dump_flush(p);
+ pcap_dump_flush(pdd);
#endif
} else {
dlt = pcap_datalink(pd);
if (RFileName == NULL)
(void)setsignal(SIGNAL_REQ_INFO, requestinfo);
#endif
+#ifdef SIGNAL_FLUSH_PCAP
+ (void)setsignal(SIGNAL_FLUSH_PCAP, flushpcap);
+#endif
- if (ndo->ndo_vflag > 0 && WFileName) {
+ if (ndo->ndo_vflag > 0 && WFileName && !print) {
+ /*
+ * When capturing to a file, if "--print" wasn't specified,
+ *"-v" means tcpdump should, once per second,
+ * "v"erbosely report the number of packets captured.
+ */
+#ifdef _WIN32
/*
- * When capturing to a file, "-v" means tcpdump should,
- * every 10 seconds, "v"erbosely report the number of
- * packets captured.
+ * https://blogs.msdn.microsoft.com/oldnewthing/20151230-00/?p=92741
+ *
+ * suggests that this dates back to W2K.
+ *
+ * I don't know what a "long wait" is, but we'll assume
+ * that printing the stats could be a "long wait".
*/
-#ifdef USE_WIN32_MM_TIMER
- /* call verbose_stats_dump() each 1000 +/-100msec */
- timer_id = timeSetEvent(1000, 100, verbose_stats_dump, 0, TIME_PERIODIC);
+ CreateTimerQueueTimer(&timer_handle, NULL,
+ verbose_stats_dump, NULL, 1000, 1000,
+ WT_EXECUTEDEFAULT|WT_EXECUTELONGFUNCTION);
setvbuf(stderr, NULL, _IONBF, 0);
-#elif defined(HAVE_ALARM)
+#else /* _WIN32 */
+ /*
+ * Assume this is UN*X, and that it has setitimer(); that
+ * dates back to UNIX 95.
+ */
+ struct itimerval timer;
(void)setsignal(SIGALRM, verbose_stats_dump);
- alarm(1);
-#endif
+ timer.it_interval.tv_sec = 1;
+ timer.it_interval.tv_usec = 0;
+ timer.it_value.tv_sec = 1;
+ timer.it_value.tv_usec = 1;
+ setitimer(ITIMER_REAL, &timer, NULL);
+#endif /* _WIN32 */
}
if (RFileName == NULL) {
(void)fprintf(stderr, "%s: ", program_name);
dlt = pcap_datalink(pd);
dlt_name = pcap_datalink_val_to_name(dlt);
+ (void)fprintf(stderr, "listening on %s", device);
if (dlt_name == NULL) {
- (void)fprintf(stderr, "listening on %s, link-type %u, capture size %u bytes\n",
- device, dlt, ndo->ndo_snaplen);
+ (void)fprintf(stderr, ", link-type %u", dlt);
} else {
- (void)fprintf(stderr, "listening on %s, link-type %s (%s), capture size %u bytes\n",
- device, dlt_name,
- pcap_datalink_val_to_description(dlt), ndo->ndo_snaplen);
+ (void)fprintf(stderr, ", link-type %s (%s)", dlt_name,
+ pcap_datalink_val_to_description(dlt));
}
+ (void)fprintf(stderr, ", snapshot length %d bytes\n", ndo->ndo_snaplen);
(void)fflush(stderr);
}
* Report the new file.
*/
dlt_name = pcap_datalink_val_to_name(dlt);
+ fprintf(stderr, "reading from file %s", RFileName);
if (dlt_name == NULL) {
- fprintf(stderr, "reading from file %s, link-type %u\n",
- RFileName, dlt);
+ fprintf(stderr, ", link-type %u", dlt);
} else {
- fprintf(stderr,
- "reading from file %s, link-type %s (%s)\n",
- RFileName, dlt_name,
- pcap_datalink_val_to_description(dlt));
+ fprintf(stderr, ", link-type %s (%s)",
+ dlt_name,
+ pcap_datalink_val_to_description(dlt));
}
+ fprintf(stderr, ", snapshot length %d\n", pcap_snapshot(pd));
}
}
}
exit_tcpdump(status == -1 ? 1 : 0);
}
+/*
+ * Catch a signal.
+ */
+static void
+(*setsignal (int sig, void (*func)(int)))(int)
+{
+#ifdef _WIN32
+ return (signal(sig, func));
+#else
+ struct sigaction old, new;
+
+ memset(&new, 0, sizeof(new));
+ new.sa_handler = func;
+ if (sig == SIGCHLD)
+ new.sa_flags = SA_RESTART;
+ if (sigaction(sig, &new, &old) < 0)
+ return (SIG_ERR);
+ return (old.sa_handler);
+#endif
+}
+
/* make a clean exit on interrupts */
-static RETSIGTYPE
+static void
cleanup(int signo _U_)
{
-#ifdef USE_WIN32_MM_TIMER
- if (timer_id)
- timeKillEvent(timer_id);
- timer_id = 0;
-#elif defined(HAVE_ALARM)
- alarm(0);
-#endif
+#ifdef _WIN32
+ if (timer_handle != INVALID_HANDLE_VALUE) {
+ DeleteTimerQueueTimer(NULL, timer_handle, NULL);
+ CloseHandle(timer_handle);
+ timer_handle = INVALID_HANDLE_VALUE;
+ }
+#else /* _WIN32 */
+ struct itimerval timer;
+
+ timer.it_interval.tv_sec = 0;
+ timer.it_interval.tv_usec = 0;
+ timer.it_value.tv_sec = 0;
+ timer.it_value.tv_usec = 0;
+ setitimer(ITIMER_REAL, &timer, NULL);
+#endif /* _WIN32 */
#ifdef HAVE_PCAP_BREAKLOOP
/*
(void)fflush(stdout);
info(1);
}
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
#endif
}
waiting a child processes to die
*/
#if defined(HAVE_FORK) || defined(HAVE_VFORK)
-static RETSIGTYPE
+static void
child_cleanup(int signo _U_)
{
wait(NULL);
#endif /* HAVE_FORK && HAVE_VFORK */
static void
-info(register int verbose)
+info(int verbose)
{
struct pcap_stat stats;
filename,
pcap_strerror(errno));
#ifdef HAVE_FORK
- exit(1);
+ exit(S_ERR_HOST_PROGRAM);
#else
- _exit(1);
+ _exit(S_ERR_HOST_PROGRAM);
#endif
}
#else /* HAVE_FORK && HAVE_VFORK */
/*
* Close the current file and open a new one.
*/
- pcap_dump_close(dump_info->p);
+ pcap_dump_close(dump_info->pdd);
/*
* Compress the file we just closed, if the user asked for it
(void)fprintf(stderr, "Maximum file limit reached: %d\n",
Wflag);
info(1);
- exit_tcpdump(0);
+ exit_tcpdump(S_SUCCESS);
/* NOTREACHED */
}
if (dump_info->CurrentFileName != NULL)
error("unable to fdopen file %s",
dump_info->CurrentFileName);
}
- dump_info->p = pcap_dump_fopen(dump_info->pd, fp);
+ dump_info->pdd = pcap_dump_fopen(dump_info->pd, fp);
#else /* !HAVE_CAPSICUM */
- dump_info->p = pcap_dump_open(dump_info->pd, dump_info->CurrentFileName);
+ dump_info->pdd = pcap_dump_open(dump_info->pd, dump_info->CurrentFileName);
#endif
#ifdef HAVE_LIBCAP_NG
capng_update(CAPNG_DROP, CAPNG_EFFECTIVE, CAP_DAC_OVERRIDE);
capng_apply(CAPNG_SELECT_BOTH);
#endif /* HAVE_LIBCAP_NG */
- if (dump_info->p == NULL)
+ if (dump_info->pdd == NULL)
error("%s", pcap_geterr(pd));
#ifdef HAVE_CAPSICUM
- set_dumper_capsicum_rights(dump_info->p);
+ set_dumper_capsicum_rights(dump_info->pdd);
#endif
}
}
* file could put it over Cflag.
*/
if (Cflag != 0) {
- long size = pcap_dump_ftell(dump_info->p);
+#ifdef HAVE_PCAP_DUMP_FTELL64
+ int64_t size = pcap_dump_ftell64(dump_info->pdd);
+#else
+ /*
+ * XXX - this only handles a Cflag value > 2^31-1 on
+ * LP64 platforms; to handle ILP32 (32-bit UN*X and
+ * Windows) or LLP64 (64-bit Windows) would require
+ * a version of libpcap with pcap_dump_ftell64().
+ */
+ long size = pcap_dump_ftell(dump_info->pdd);
+#endif
if (size == -1)
error("ftell fails on output file");
/*
* Close the current file and open a new one.
*/
- pcap_dump_close(dump_info->p);
+ pcap_dump_close(dump_info->pdd);
/*
* Compress the file we just closed, if the user
error("unable to fdopen file %s",
dump_info->CurrentFileName);
}
- dump_info->p = pcap_dump_fopen(dump_info->pd, fp);
+ dump_info->pdd = pcap_dump_fopen(dump_info->pd, fp);
#else /* !HAVE_CAPSICUM */
- dump_info->p = pcap_dump_open(dump_info->pd, dump_info->CurrentFileName);
+ dump_info->pdd = pcap_dump_open(dump_info->pd, dump_info->CurrentFileName);
#endif
#ifdef HAVE_LIBCAP_NG
capng_update(CAPNG_DROP, CAPNG_EFFECTIVE, CAP_DAC_OVERRIDE);
capng_apply(CAPNG_SELECT_BOTH);
#endif /* HAVE_LIBCAP_NG */
- if (dump_info->p == NULL)
+ if (dump_info->pdd == NULL)
error("%s", pcap_geterr(pd));
#ifdef HAVE_CAPSICUM
- set_dumper_capsicum_rights(dump_info->p);
+ set_dumper_capsicum_rights(dump_info->pdd);
#endif
}
}
- pcap_dump((u_char *)dump_info->p, h, sp);
+ pcap_dump((u_char *)dump_info->pdd, h, sp);
#ifdef HAVE_PCAP_DUMP_FLUSH
if (Uflag)
- pcap_dump_flush(dump_info->p);
+ pcap_dump_flush(dump_info->pdd);
#endif
+ if (dump_info->ndo != NULL)
+ pretty_print_packet(dump_info->ndo, h, sp, packets_captured);
+
--infodelay;
if (infoprint)
info(0);
static void
dump_packet(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
{
+ struct dump_info *dump_info;
+
++packets_captured;
++infodelay;
- pcap_dump(user, h, sp);
+ dump_info = (struct dump_info *)user;
+
+ pcap_dump((u_char *)dump_info->pdd, h, sp);
#ifdef HAVE_PCAP_DUMP_FLUSH
if (Uflag)
- pcap_dump_flush((pcap_dumper_t *)user);
+ pcap_dump_flush(dump_info->pdd);
#endif
+ if (dump_info->ndo != NULL)
+ pretty_print_packet(dump_info->ndo, h, sp, packets_captured);
+
--infodelay;
if (infoprint)
info(0);
info(0);
}
-#ifdef _WIN32
- /*
- * XXX - there should really be libpcap calls to get the version
- * number as a string (the string would be generated from #defines
- * at run time, so that it's not generated from string constants
- * in the library, as, on many UNIX systems, those constants would
- * be statically linked into the application executable image, and
- * would thus reflect the version of libpcap on the system on
- * which the application was *linked*, not the system on which it's
- * *running*.
- *
- * That routine should be documented, unlike the "version[]"
- * string, so that UNIX vendors providing their own libpcaps
- * don't omit it (as a couple of vendors have...).
- *
- * Packet.dll should perhaps also export a routine to return the
- * version number of the Packet.dll code, to supply the
- * "Wpcap_version" information on Windows.
- */
- char WDversion[]="current-git.tcpdump.org";
-#if !defined(HAVE_GENERATED_VERSION)
- char version[]="current-git.tcpdump.org";
-#endif
- char pcap_version[]="current-git.tcpdump.org";
- char Wpcap_version[]="3.1";
-#endif
-
#ifdef SIGNAL_REQ_INFO
-RETSIGTYPE requestinfo(int signo _U_)
+static void
+requestinfo(int signo _U_)
{
if (infodelay)
++infoprint;
}
#endif
+#ifdef SIGNAL_FLUSH_PCAP
+static void
+flushpcap(int signo _U_)
+{
+ if (pdd != NULL)
+ pcap_dump_flush(pdd);
+}
+#endif
+
+static void
+print_packets_captured (void)
+{
+ static u_int prev_packets_captured, first = 1;
+
+ if (infodelay == 0 && (first || packets_captured != prev_packets_captured)) {
+ fprintf(stderr, "Got %u\r", packets_captured);
+ first = 0;
+ prev_packets_captured = packets_captured;
+ }
+}
+
/*
* Called once each second in verbose mode while dumping to file
*/
-#ifdef USE_WIN32_MM_TIMER
-void CALLBACK verbose_stats_dump (UINT timer_id _U_, UINT msg _U_, DWORD_PTR arg _U_,
- DWORD_PTR dw1 _U_, DWORD_PTR dw2 _U_)
+#ifdef _WIN32
+static void CALLBACK verbose_stats_dump(PVOID param _U_,
+ BOOLEAN timer_fired _U_)
{
- if (infodelay == 0)
- fprintf(stderr, "Got %u\r", packets_captured);
+ print_packets_captured();
}
-#elif defined(HAVE_ALARM)
+#else /* _WIN32 */
static void verbose_stats_dump(int sig _U_)
{
- if (infodelay == 0)
- fprintf(stderr, "Got %u\r", packets_captured);
- alarm(1);
+ print_packets_captured();
}
-#endif
+#endif /* _WIN32 */
USES_APPLE_DEPRECATED_API
static void
print_version(void)
{
- extern char version[];
#ifndef HAVE_PCAP_LIB_VERSION
-#if defined(_WIN32) || defined(HAVE_PCAP_VERSION)
+ #ifdef HAVE_PCAP_VERSION
extern char pcap_version[];
-#else /* defined(_WIN32) || defined(HAVE_PCAP_VERSION) */
+ #else /* HAVE_PCAP_VERSION */
static char pcap_version[] = "unknown";
-#endif /* defined(_WIN32) || defined(HAVE_PCAP_VERSION) */
+ #endif /* HAVE_PCAP_VERSION */
#endif /* HAVE_PCAP_LIB_VERSION */
const char *smi_version_string;
+ (void)fprintf(stderr, "%s version " PACKAGE_VERSION "\n", program_name);
#ifdef HAVE_PCAP_LIB_VERSION
-#ifdef _WIN32
- (void)fprintf(stderr, "%s version %s, based on tcpdump version %s\n", program_name, WDversion, version);
-#else /* _WIN32 */
- (void)fprintf(stderr, "%s version %s\n", program_name, version);
-#endif /* _WIN32 */
- (void)fprintf(stderr, "%s\n",pcap_lib_version());
+ (void)fprintf(stderr, "%s\n", pcap_lib_version());
#else /* HAVE_PCAP_LIB_VERSION */
-#ifdef _WIN32
- (void)fprintf(stderr, "%s version %s, based on tcpdump version %s\n", program_name, WDversion, version);
- (void)fprintf(stderr, "WinPcap version %s, based on libpcap version %s\n",Wpcap_version, pcap_version);
-#else /* _WIN32 */
- (void)fprintf(stderr, "%s version %s\n", program_name, version);
(void)fprintf(stderr, "libpcap version %s\n", pcap_version);
-#endif /* _WIN32 */
#endif /* HAVE_PCAP_LIB_VERSION */
#if defined(HAVE_LIBCRYPTO) && defined(SSLEAY_VERSION)
smi_version_string = nd_smi_version_string();
if (smi_version_string != NULL)
(void)fprintf (stderr, "SMI-library: %s\n", smi_version_string);
+#ifdef HAVE_DNET_HTOA
+ (void)fprintf(stderr, "libdnet unknown version\n");
+#endif
+
+#if defined(__SANITIZE_ADDRESS__)
+ (void)fprintf (stderr, "Compiled with AddressSanitizer/GCC.\n");
+#elif defined(__has_feature)
+# if __has_feature(address_sanitizer)
+ (void)fprintf (stderr, "Compiled with AddressSanitizer/CLang.\n");
+# endif
+#endif /* __SANITIZE_ADDRESS__ or __has_feature */
}
USES_APPLE_RST
(void)fprintf(stderr,
"\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 ] [ --number ]\n");
-#ifdef HAVE_PCAP_SETDIRECTION
+"\t\t[ -i interface ]" IMMEDIATE_MODE_USAGE j_FLAG_USAGE "\n");
+#ifdef HAVE_PCAP_FINDALLDEVS_EX
(void)fprintf(stderr,
-"\t\t[ -Q in|out|inout ]\n");
+"\t\t" LIST_REMOTE_INTERFACES_USAGE "\n");
#endif
+#ifdef USE_LIBSMI
(void)fprintf(stderr,
-"\t\t[ -r file ] [ -s snaplen ] ");
-#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
- (void)fprintf(stderr, "[ --time-stamp-precision precision ]\n");
- (void)fprintf(stderr,
-"\t\t");
+"\t\t" m_FLAG_USAGE "\n");
#endif
-#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
- (void)fprintf(stderr, "[ --immediate-mode ] ");
-#endif
- (void)fprintf(stderr, "[ -T type ] [ --version ] [ -V file ]\n");
(void)fprintf(stderr,
-"\t\t[ -w file ] [ -W filecount ] [ -y datalinktype ] [ -z postrotate-command ]\n");
+"\t\t[ -M secret ] [ --number ] [ --print ]" Q_FLAG_USAGE "\n");
+ (void)fprintf(stderr,
+"\t\t[ -r file ] [ -s snaplen ]" TIME_STAMP_PRECISION_USAGE "\n");
(void)fprintf(stderr,
-"\t\t[ -Z user ] [ expression ]\n");
+"\t\t[ -T type ] [ --version ] [ -V file ] [ -w file ]\n");
+ (void)fprintf(stderr,
+"\t\t[ -W filecount ] [ -y datalinktype ]\n");
+ (void)fprintf(stderr,
+"\t\t[ -z postrotate-command ] [ -Z user ] [ expression ]\n");
}
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */
projects / tcpdump / blobdiff