#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
#include "interface.h"
#include "addrtoname.h"
#include "machdep.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
#define SIGNAL_FLUSH_PCAP SIGUSR2
#endif
+#if defined(HAVE_PCAP_CREATE) || defined(_WIN32)
static int Bflag; /* buffer size */
+#endif
#ifdef HAVE_PCAP_DUMP_FTELL64
static int64_t Cflag; /* rotate dump files after this many bytes */
#else
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) */
static void child_cleanup(int);
static void print_version(void);
static void print_usage(void);
+#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 NORETURN void show_devices_and_exit(void);
static void droproot(const char *, const char *);
#ifdef SIGNAL_REQ_INFO
-void requestinfo(int);
+static void requestinfo(int);
#endif
#ifdef SIGNAL_FLUSH_PCAP
-void flushpcap(int);
+static void flushpcap(int);
#endif
#ifdef _WIN32
{ PCAP_IF_RUNNING, "Running" },
#endif
{ PCAP_IF_LOOPBACK, "Loopback" },
+#ifdef PCAP_IF_WIRELESS
+ { PCAP_IF_WIRELESS, "Wireless" },
+#endif
{ 0, NULL }
};
#endif
printf("%d.%s", i+1, dev->name);
if (dev->description != NULL)
printf(" (%s)", dev->description);
- if (dev->flags != 0)
- printf(" [%s]", bittok2str(status_flags, "none", dev->flags));
+ 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);
{
struct passwd *pw = NULL;
- if (chroot_dir && !username) {
- fprintf(stderr, "%s: Chroot without dropping root is insecure\n",
- program_name);
- exit_tcpdump(S_ERR_HOST_PROGRAM);
- }
+ 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(S_ERR_HOST_PROGRAM);
- }
+ 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(S_ERR_HOST_PROGRAM);
- }
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(S_ERR_HOST_PROGRAM);
- }
+ } 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)
copy_argv(char **argv)
{
char **p;
- u_int len = 0;
+ size_t len = 0;
char *buf;
char *src, *dst;
}
static char *
-find_interface_by_number(const char *url, 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;
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
/*
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);
{
int cnt, op, i;
bpf_u_int32 localnet = 0, netmask = 0;
- int timezone_offset = 0;
char *cp, *infile, *cmdbuf, *device, *RFileName, *VFileName, *WFileName;
char *endp;
pcap_handler callback;
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);
+ error("invalid snaplen %s (must be >= 0 and <= %d)",
+ optarg, MAXIMUM_SNAPLEN);
break;
case 'S':
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 */
RFileName, dlt_name,
pcap_datalink_val_to_description(dlt));
}
+#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.
capdns = capdns_setup();
#endif /* HAVE_CASPER */
- init_print(ndo, localnet, netmask, timezone_offset);
+ init_print(ndo, localnet, netmask);
#ifndef _WIN32
(void)setsignal(SIGPIPE, cleanup);
}
#ifdef SIGNAL_REQ_INFO
-void requestinfo(int signo _U_)
+static void
+requestinfo(int signo _U_)
{
if (infodelay)
++infoprint;
#endif
#ifdef SIGNAL_FLUSH_PCAP
-void flushpcap(int signo _U_)
+static void
+flushpcap(int signo _U_)
{
if (pdd != NULL)
pcap_dump_flush(pdd);
projects / tcpdump / blobdiff