#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>
#endif /* HAVE_CASPER */
#endif /* HAVE_CAPSICUM */
#ifdef HAVE_PCAP_OPEN
+/*
+ * We found pcap_open() in the capture library, so we'll be using
+ * the remote capture APIs; define PCAP_REMOTE before we include pcap.h,
+ * so we get those APIs declared, and the types and #defines that they
+ * use defined.
+ *
+ * WinPcap's headers require that PCAP_REMOTE be defined in order to get
+ * remote-capture APIs declared and types and #defines that they use
+ * defined.
+ *
+ * (Versions of libpcap with those APIs, and thus Npcap, which is based on
+ * those versions of libpcap, don't require it.)
+ */
#define HAVE_REMOTE
#endif
#include <pcap.h>
#include "interface.h"
#include "addrtoname.h"
#include "machdep.h"
-#include "gmt2local.h"
#include "pcap-missing.h"
#include "ascii_strcasecmp.h"
#include "print.h"
+#include "fptype.h"
+
#ifndef PATH_MAX
#define PATH_MAX 1024
#endif
* dflag but, instead, *if* built with optimizer debugging code,
* *export* a routine to set that flag.
*/
+extern int dflag;
int dflag; /* print filter code */
static int Gflag; /* rotate dump files after this many seconds */
static int Gflag_count; /* number of files created with Gflag rotation */
static int Jflag; /* list available time stamp types */
static int jflag = -1; /* packet time stamp source */
#endif
+static int lflag; /* line-buffered output */
static int pflag; /* don't go promiscuous */
#ifdef HAVE_PCAP_SETDIRECTION
static int Qflag = -1; /* restrict captured packet by send/receive direction */
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 int timeout = 1000; /* default timeout = 1000 ms = 1 s */
#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
static int immediate_mode;
#endif
#define J_FLAG
#endif /* PCAP_ERROR_TSTAMP_TYPE_NOTSUP */
+#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 ]"
#define OPTION_IMMEDIATE_MODE 130
#define OPTION_PRINT 131
#define OPTION_LIST_REMOTE_INTERFACES 132
+#define OPTION_TSTAMP_MICRO 133
+#define OPTION_TSTAMP_NANO 134
+#define OPTION_FP_TYPE 135
static const struct option longopts[] = {
#if defined(HAVE_PCAP_CREATE) || defined(_WIN32)
{ "list-time-stamp-types", no_argument, NULL, 'J' },
#endif
#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
+ { "micro", no_argument, NULL, OPTION_TSTAMP_MICRO},
+ { "nano", no_argument, NULL, OPTION_TSTAMP_NANO},
{ "time-stamp-precision", required_argument, NULL, OPTION_TSTAMP_PRECISION},
#endif
{ "dont-verify-checksums", no_argument, NULL, 'K' },
{ "debug-filter-parser", no_argument, NULL, 'Y' },
#endif
{ "relinquish-privileges", required_argument, NULL, 'Z' },
+ { "fp-type", no_argument, NULL, OPTION_FP_TYPE },
{ "number", no_argument, NULL, '#' },
{ "print", no_argument, NULL, OPTION_PRINT },
{ "version", no_argument, NULL, OPTION_VERSION },
};
#ifdef HAVE_PCAP_FINDALLDEVS_EX
-#define LIST_REMOTE_INTERFACES_USAGE "[ --list-remote-interfaces remote-source ]"
+#define LIST_REMOTE_INTERFACES_USAGE "[ --list-remote-interfaces remote-source ]"
#else
#define LIST_REMOTE_INTERFACES_USAGE
#endif
#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
if (cnt == 0 && max_chars == 0)
strncpy(buffer, filename, PATH_MAX + 1);
else
- if (nd_snprintf(buffer, PATH_MAX + 1, "%s%0*d", filename, max_chars, cnt) > PATH_MAX)
+ if (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);
get_next_file(FILE *VFile, char *ptr)
{
char *ret;
+ size_t len;
ret = fgets(ptr, PATH_MAX, VFile);
if (!ret)
return NULL;
- if (ptr[strlen(ptr) - 1] == '\n')
- ptr[strlen(ptr) - 1] = '\0';
+ len = strlen (ptr);
+ if (len > 0 && ptr[len - 1] == '\n')
+ ptr[len - 1] = '\0';
return ret;
}
copy_argv(char **argv)
{
char **p;
- u_int len = 0;
+ size_t len = 0;
char *buf;
char *src, *dst;
static char *
read_infile(char *fname)
{
- int i, fd, cc;
+ int i, fd;
+ ssize_t cc;
char *cp;
struct stat buf;
if (cc < 0)
error("read %s: %s", fname, pcap_strerror(errno));
if (cc != buf.st_size)
- error("short read %s (%d != %d)", fname, cc, (int)buf.st_size);
+ error("short read %s (%zd != %d)", fname, cc, (int)buf.st_size);
close(fd);
/* replace "# comment" with spaces */
*/
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);
#ifdef HAVE_PCAP_OPEN
/*
- * Prefix for rpcap URLs.
+ * Prefixes for rpcap URLs.
*/
static char rpcap_prefix[] = "rpcap://";
+static char rpcap_ssl_prefix[] = "rpcaps://";
#endif
static pcap_t *
/*
* Is this an rpcap URL?
*/
- if (strncmp(device, rpcap_prefix, sizeof(rpcap_prefix) - 1) == 0) {
+ 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,
+ pflag ? 0 : PCAP_OPENFLAG_PROMISCUOUS, timeout, NULL,
ebuf);
if (pc == NULL) {
/*
error("%s: Can't set monitor mode: %s",
device, pcap_statustostr(status));
}
- status = pcap_set_timeout(pc, 1000);
+ status = pcap_set_timeout(pc, timeout);
if (status != 0)
error("%s: pcap_set_timeout failed: %s",
device, pcap_statustostr(status));
/*
* Return an error for our caller to handle.
*/
- nd_snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s\n(%s)",
+ 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);
char sysctl[32];
size_t s = sizeof(parent);
- nd_snprintf(sysctl, sizeof(sysctl),
+ snprintf(sysctl, sizeof(sysctl),
"net.wlan.%d.%%parent", atoi(device + 4));
sysctlbyname(sysctl, parent, &s, NULL, 0);
strlcpy(newdev, device, sizeof(newdev));
else
error("%s: %s", device,
pcap_statustostr(status));
+ pcap_close(pc);
+ return (NULL);
} else if (status > 0) {
/*
* pcap_activate() succeeded, but it's warning us
* specified, default to 256KB.
*/
if (ndo->ndo_snaplen == 0)
- ndo->ndo_snaplen = 262144;
- pc = pcap_open_live(device, ndo->ndo_snaplen, !pflag, 1000, ebuf);
+ ndo->ndo_snaplen = MAXIMUM_SNAPLEN;
+ pc = pcap_open_live(device, ndo->ndo_snaplen, !pflag, timeout, ebuf);
if (pc == NULL) {
/*
* If this failed with "No such device", that means
{
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;
u_char *pcap_userdata;
char ebuf[PCAP_ERRBUF_SIZE];
char VFileLine[PATH_MAX + 1];
- char *username = NULL;
- char *chroot_dir = NULL;
+ const char *username = NULL;
+#ifndef _WIN32
+ const char *chroot_dir = NULL;
+#endif
char *ret = NULL;
char *end;
#ifdef HAVE_PCAP_FINDALLDEVS
setvbuf(stdout, NULL, _IOLBF, 0);
#endif
#endif /* _WIN32 */
+ lflag = 1;
break;
case 'K':
break;
case 's':
- ndo->ndo_snaplen = strtol(optarg, &end, 0);
+ ndo->ndo_snaplen = (int)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':
ndo->ndo_packettype = PT_LMP;
else if (ascii_strcasecmp(optarg, "resp") == 0)
ndo->ndo_packettype = PT_RESP;
+ else if (ascii_strcasecmp(optarg, "ptp") == 0)
+ ndo->ndo_packettype = PT_PTP;
else
error("unknown packet type `%s'", optarg);
break;
print = 1;
break;
+#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
+ case OPTION_TSTAMP_MICRO:
+ ndo->ndo_tstamp_precision = PCAP_TSTAMP_PRECISION_MICRO;
+ break;
+
+ case OPTION_TSTAMP_NANO:
+ ndo->ndo_tstamp_precision = PCAP_TSTAMP_PRECISION_NANO;
+ break;
+#endif
+
+ case OPTION_FP_TYPE:
+ /*
+ * Print out the type of floating-point arithmetic
+ * we're doing; it's probably IEEE, unless somebody
+ * tries to run this on a VAX, but the precision
+ * may differ (e.g., it might be 32-bit, 64-bit,
+ * or 80-bit).
+ */
+ float_type_check(0x4e93312d);
+ return 0;
+
default:
print_usage();
exit_tcpdump(S_ERR_HOST_PROGRAM);
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 */
if (VFileName != NULL && RFileName != NULL)
error("-V and -r are mutually exclusive.");
-#ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
/*
- * If we're printing dissected packets to the standard output
- * and the standard output is a terminal, use immediate mode,
- * as the user's probably expecting to see packets pop up
- * immediately.
+ * If we're printing dissected packets to the standard output,
+ * and either the standard output is a terminal or we're doing
+ * "line" buffering, set the capture timeout to .1 second rather
+ * than 1 second, as the user's probably expecting to see packets
+ * pop up immediately shortly after they arrive.
*
- * XXX - set the timeout to a lower value, instead? If so,
- * what value would be appropriate?
+ * XXX - would there be some value appropriate for all cases,
+ * based on, say, the buffer size and packet input rate?
*/
- if ((WFileName == NULL || print) && isatty(1))
- immediate_mode = 1;
-#endif
+ if ((WFileName == NULL || print) && (isatty(1) || lflag))
+ timeout = 100;
#ifdef WITH_CHROOT
/* if run as root, prepare for chrooting */
#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 if (dflag && !device) {
+ int dump_dlt = DLT_EN10MB;
+ /*
+ * We're dumping the compiled code without an explicit
+ * device specification. (If a device is specified, we
+ * definitely want to open it to use the DLT of that device.)
+ * Either default to DLT_EN10MB with a warning, or use
+ * the user-specified value if supplied.
+ */
+ /*
+ * If no snapshot length was specified, or a length of 0 was
+ * specified, default to 256KB.
+ */
+ if (ndo->ndo_snaplen == 0)
+ ndo->ndo_snaplen = MAXIMUM_SNAPLEN;
+ /*
+ * If a DLT was specified with the -y flag, use that instead.
+ */
+ if (yflag_dlt != -1)
+ dump_dlt = yflag_dlt;
+ else
+ fprintf(stderr, "Warning: assuming Ethernet\n");
+ pd = pcap_open_dead(dump_dlt, ndo->ndo_snaplen);
} 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);
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
(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));
}
}
}
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");
#ifdef HAVE_PCAP_FINDALLDEVS_EX
(void)fprintf(stderr,
"\t\t" LIST_REMOTE_INTERFACES_USAGE "\n");
+#endif
+#ifdef USE_LIBSMI
+ (void)fprintf(stderr,
+"\t\t" m_FLAG_USAGE "\n");
#endif
(void)fprintf(stderr,
"\t\t[ -M secret ] [ --number ] [ --print ]" Q_FLAG_USAGE "\n");
(void)fprintf(stderr,
-"\t\t[ -r file ] [ -s snaplen ]" TIME_STAMP_PRECISION_USAGE "\n");
+"\t\t[ -r file ] [ -s snaplen ] [ -T type ] [ --version ]\n");
(void)fprintf(stderr,
-"\t\t[ -T type ] [ --version ] [ -V file ] [ -w file ]\n");
+"\t\t[ -V file ] [ -w file ] [ -W filecount ] [ -y datalinktype ]\n");
+#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
(void)fprintf(stderr,
-"\t\t[ -W filecount ] [ -y datalinktype ]\n");
+"\t\t[ --time-stamp-precision precision ] [ --micro ] [ --nano ]\n");
+#endif
(void)fprintf(stderr,
"\t\t[ -z postrotate-command ] [ -Z user ] [ expression ]\n");
}
projects / tcpdump / blobdiff