X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/a022ed3a9d66f8e6280629787fa93c04282f333b..cfbae609a18fa6d61d09a8b263ceaf389f510e9b:/tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index cd277042..1aa285e3 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -124,6 +124,16 @@ The Regents of the University of California.  All rights reserved.\n";
 #include <grp.h>
 #endif /* _WIN32 */
 
+/*
+ * Pathname separator.
+ * Use this in pathnames, but do *not* use it in URLs.
+ */
+#ifdef _WIN32
+#define PATH_SEPARATOR	'\\'
+#else
+#define PATH_SEPARATOR	'/'
+#endif
+
 /* capabilities convenience library */
 /* If a code depends on HAVE_LIBCAP_NG, it depends also on HAVE_CAP_NG_H.
  * If HAVE_CAP_NG_H is not defined, undefine HAVE_LIBCAP_NG.
@@ -220,6 +230,7 @@ static int timeout = 1000;		/* default timeout = 1000 ms = 1 s */
 #ifdef HAVE_PCAP_SET_IMMEDIATE_MODE
 static int immediate_mode;
 #endif
+static int count_mode;
 
 static int infodelay;
 static int infoprint;
@@ -690,6 +701,7 @@ show_remote_devices_and_exit(void)
 #define OPTION_TSTAMP_MICRO		133
 #define OPTION_TSTAMP_NANO		134
 #define OPTION_FP_TYPE			135
+#define OPTION_COUNT			136
 
 static const struct option longopts[] = {
 #if defined(HAVE_PCAP_CREATE) || defined(_WIN32)
@@ -733,6 +745,7 @@ static const struct option longopts[] = {
 	{ "debug-filter-parser", no_argument, NULL, 'Y' },
 #endif
 	{ "relinquish-privileges", required_argument, NULL, 'Z' },
+	{ "count", no_argument, NULL, OPTION_COUNT },
 	{ "fp-type", no_argument, NULL, OPTION_FP_TYPE },
 	{ "number", no_argument, NULL, '#' },
 	{ "print", no_argument, NULL, OPTION_PRINT },
@@ -938,7 +951,7 @@ tstamp_precision_to_string(int precision)
  * necessary to make the standard I/O library work with an fdopen()ed
  * FILE * from that descriptor.
  *
- * A long time ago, in a galaxy far far away, AT&T decided that, instead
+ * A long time ago in a galaxy far, far away, AT&T decided that, instead
  * of providing separate APIs for getting and setting the FD_ flags on a
  * descriptor, getting and setting the O_ flags on a descriptor, and
  * locking files, they'd throw them all into a kitchen-sink fcntl() call
@@ -1495,7 +1508,7 @@ main(int argc, char **argv)
 	VFile = NULL;
 	WFileName = NULL;
 	dlt = -1;
-	if ((cp = strrchr(argv[0], '/')) != NULL)
+	if ((cp = strrchr(argv[0], PATH_SEPARATOR)) != NULL)
 		ndo->program_name = program_name = cp + 1;
 	else
 		ndo->program_name = program_name = argv[0];
@@ -1793,6 +1806,8 @@ main(int argc, char **argv)
 				ndo->ndo_packettype = PT_PTP;
 			else if (ascii_strcasecmp(optarg, "someip") == 0)
 				ndo->ndo_packettype = PT_SOMEIP;
+			else if (ascii_strcasecmp(optarg, "domain") == 0)
+				ndo->ndo_packettype = PT_DOMAIN;
 			else
 				error("unknown packet type `%s'", optarg);
 			break;
@@ -1908,6 +1923,10 @@ main(int argc, char **argv)
 			float_type_check(0x4e93312d);
 			return 0;
 
+		case OPTION_COUNT:
+			count_mode = 1;
+			break;
+
 		default:
 			print_usage();
 			exit_tcpdump(S_ERR_HOST_PROGRAM);
@@ -1923,6 +1942,14 @@ main(int argc, char **argv)
 		show_remote_devices_and_exit();
 #endif
 
+#if defined(DLT_LINUX_SLL2) && defined(HAVE_PCAP_SET_DATALINK)
+/* Set default linktype DLT_LINUX_SLL2 when capturing on the "any" device */
+		if (device != NULL &&
+		    strncmp (device, "any", strlen("any")) == 0
+		    && yflag_dlt == -1)
+			yflag_dlt = DLT_LINUX_SLL2;
+#endif
+
 	switch (ndo->ndo_tflag) {
 
 	case 0: /* Default */
@@ -2171,7 +2198,8 @@ main(int argc, char **argv)
 			}
 #endif
 			(void)fprintf(stderr, "%s: data link type %s\n",
-				      program_name, yflag_dlt_name);
+				      program_name,
+				      pcap_datalink_val_to_name(yflag_dlt));
 			(void)fflush(stderr);
 		}
 		i = pcap_snapshot(pd);
@@ -2452,7 +2480,7 @@ DIAG_ON_CLANG(assign-enum)
 		 */
 		if (!ndo->ndo_vflag && !WFileName) {
 			(void)fprintf(stderr,
-			    "%s: verbose output suppressed, use -v or -vv for full protocol decode\n",
+			    "%s: verbose output suppressed, use -v[v]... for full protocol decode\n",
 			    program_name);
 		} else
 			(void)fprintf(stderr, "%s: ", program_name);
@@ -2595,6 +2623,10 @@ DIAG_ON_CLANG(assign-enum)
 	}
 	while (ret != NULL);
 
+	if (count_mode && RFileName != NULL)
+		fprintf(stderr, "%u packet%s\n", packets_captured,
+			PLURAL_SUFFIX(packets_captured));
+
 	free(cmdbuf);
 	pcap_freecode(&fcode);
 	exit_tcpdump(status == -1 ? 1 : 0);
@@ -3027,7 +3059,8 @@ print_packet(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
 
 	++infodelay;
 
-	pretty_print_packet((netdissect_options *)user, h, sp, packets_captured);
+	if (!count_mode)
+		pretty_print_packet((netdissect_options *)user, h, sp, packets_captured);
 
 	--infodelay;
 	if (infoprint)
@@ -3114,7 +3147,9 @@ print_version(void)
 	(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");
+	(void)fprintf (stderr, "Compiled with AddressSanitizer/Clang.\n");
+#  elif __has_feature(memory_sanitizer)
+	(void)fprintf (stderr, "Compiled with MemorySanitizer/Clang.\n");
 #  endif
 #endif /* __SANITIZE_ADDRESS__ or __has_feature */
 }
@@ -3125,7 +3160,7 @@ print_usage(void)
 {
 	print_version();
 	(void)fprintf(stderr,
-"Usage: %s [-aAbd" D_FLAG "efhH" I_FLAG J_FLAG "KlLnNOpqStu" U_FLAG "vxX#]" B_FLAG_USAGE " [ -c count ]\n", program_name);
+"Usage: %s [-Abd" D_FLAG "efhH" I_FLAG J_FLAG "KlLnNOpqStu" U_FLAG "vxX#]" B_FLAG_USAGE " [ -c count ] [--count]\n", program_name);
 	(void)fprintf(stderr,
 "\t\t[ -C file_size ] [ -E algo:secret ] [ -F file ] [ -G seconds ]\n");
 	(void)fprintf(stderr,