3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
51 #ifdef HAVE_SYS_STAT_H
52 # include <sys/stat.h>
56 #include <zlib.h> /* to get the libz version number */
60 # include <sys/capability.h>
63 #ifndef HAVE_GETOPT_LONG
64 #include "wsutil/wsgetopt.h"
69 #include <epan/exceptions.h>
70 #include <epan/epan-int.h>
71 #include <epan/epan.h>
73 #include <wsutil/clopts_common.h>
74 #include <wsutil/cmdarg_err.h>
75 #include <wsutil/crash_info.h>
76 #include <wsutil/filesystem.h>
77 #include <wsutil/file_util.h>
78 #include <wsutil/privileges.h>
79 #include <wsutil/report_err.h>
80 #include <wsutil/ws_diag_control.h>
81 #include <wsutil/ws_version_info.h>
84 #include <epan/timestamp.h>
85 #include <epan/packet.h>
87 #include <epan/wslua/init_wslua.h>
89 #include "frame_tvbuff.h"
90 #include <epan/disabled_protos.h>
91 #include <epan/prefs.h>
92 #include <epan/column.h>
93 #include <epan/print.h>
94 #include <epan/addr_resolv.h>
96 #include "ui/capture_ui_utils.h"
99 #include "ui/ui_util.h"
100 #include "ui/cli/tshark-tap.h"
101 #include "register.h"
102 #include <epan/epan_dissect.h>
103 #include <epan/tap.h>
104 #include <epan/stat_tap_ui.h>
105 #include <epan/conversation_table.h>
106 #include <epan/srt_table.h>
107 #include <epan/rtd_table.h>
108 #include <epan/ex-opt.h>
110 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
111 #include <epan/asn1.h>
112 #include <epan/dissectors/packet-kerberos.h>
115 #include "capture_opts.h"
117 #include "caputils/capture-pcap-util.h"
120 #include "caputils/capture_ifinfo.h"
122 #include "caputils/capture-wpcap.h"
123 #include <wsutil/os_version_info.h>
124 #include <wsutil/unicode-utils.h>
126 #include <capchild/capture_session.h>
127 #include <capchild/capture_sync.h>
128 #endif /* HAVE_LIBPCAP */
130 #include <epan/funnel.h>
132 #include <wsutil/str_util.h>
135 #include <wsutil/plugins.h>
140 #define tshark_debug(...) g_warning(__VA_ARGS__)
142 #define tshark_debug(...)
147 * This is the template for the decode as option; it is shared between the
148 * various functions that output the usage for this parameter.
150 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
152 static guint32 cum_bytes;
153 static const frame_data *ref;
154 static frame_data ref_frame;
155 static frame_data *prev_dis;
156 static frame_data prev_dis_frame;
157 static frame_data *prev_cap;
158 static frame_data prev_cap_frame;
160 static const char* prev_display_dissector_name = NULL;
162 static gboolean perform_two_pass_analysis;
165 * The way the packet decode is to be written.
168 WRITE_TEXT, /* summary or detail text */
169 WRITE_XML, /* PDML or PSML */
170 WRITE_FIELDS /* User defined list of fields */
171 /* Add CSV and the like here */
174 static output_action_e output_action;
175 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
176 static gboolean print_packet_info; /* TRUE if we're to print packet information */
177 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
178 static gboolean print_details; /* TRUE if we're to print packet details information */
179 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
180 static gboolean line_buffered;
181 static gboolean really_quiet = FALSE;
183 static print_format_e print_format = PR_FMT_TEXT;
184 static print_stream_t *print_stream;
186 static output_fields_t* output_fields = NULL;
188 /* The line separator used between packets, changeable via the -S option */
189 static const char *separator = "";
193 * TRUE if we're to print packet counts to keep track of captured packets.
195 static gboolean print_packet_counts;
197 static capture_options global_capture_opts;
198 static capture_session global_capture_session;
201 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
202 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
205 static gboolean capture(void);
206 static void report_counts(void);
208 static BOOL WINAPI capture_cleanup(DWORD);
210 static void capture_cleanup(int);
212 static void report_counts_siginfo(int);
216 #else /* HAVE_LIBPCAP */
218 static char *output_file_name;
220 #endif /* HAVE_LIBPCAP */
222 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
223 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
224 struct wtap_pkthdr *whdr, const guchar *pd,
226 static void show_capture_file_io_error(const char *, int, gboolean);
227 static void show_print_file_io_error(int err);
228 static gboolean write_preamble(capture_file *cf);
229 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
230 static gboolean write_finale(void);
231 static const char *cf_open_error_message(int err, gchar *err_info,
232 gboolean for_writing, int file_type);
234 static void open_failure_message(const char *filename, int err,
235 gboolean for_writing);
236 static void failure_message(const char *msg_format, va_list ap);
237 static void read_failure_message(const char *filename, int err);
238 static void write_failure_message(const char *filename, int err);
239 static void failure_message_cont(const char *msg_format, va_list ap);
243 static GHashTable *output_only_tables = NULL;
246 const char *sstr; /* The short string */
247 const char *lstr; /* The long string */
251 string_compare(gconstpointer a, gconstpointer b)
253 return strcmp(((const struct string_elem *)a)->sstr,
254 ((const struct string_elem *)b)->sstr);
258 string_elem_print(gpointer data, gpointer not_used _U_)
260 fprintf(stderr, " %s - %s\n",
261 ((struct string_elem *)data)->sstr,
262 ((struct string_elem *)data)->lstr);
266 list_capture_types(void) {
268 struct string_elem *captypes;
271 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
273 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
274 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
275 if (wtap_dump_can_open(i)) {
276 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
277 captypes[i].lstr = wtap_file_type_subtype_string(i);
278 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
281 g_slist_foreach(list, string_elem_print, NULL);
287 list_read_capture_types(void) {
289 struct string_elem *captypes;
291 const char *magic = "Magic-value-based";
292 const char *heuristic = "Heuristics-based";
294 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
295 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
297 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
298 for (i = 0; open_routines[i].name != NULL; i++) {
299 captypes[i].sstr = open_routines[i].name;
300 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
301 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
303 g_slist_foreach(list, string_elem_print, NULL);
309 print_usage(FILE *output)
311 fprintf(output, "\n");
312 fprintf(output, "Usage: tshark [options] ...\n");
313 fprintf(output, "\n");
316 fprintf(output, "Capture interface:\n");
317 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
318 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
319 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
320 fprintf(output, " -p don't capture in promiscuous mode\n");
321 #ifdef HAVE_PCAP_CREATE
322 fprintf(output, " -I capture in monitor mode, if available\n");
324 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
325 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
327 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
328 fprintf(output, " -D print list of interfaces and exit\n");
329 fprintf(output, " -L print list of link-layer types of iface and exit\n");
330 fprintf(output, "\n");
331 fprintf(output, "Capture stop conditions:\n");
332 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
333 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
334 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
335 fprintf(output, " files:NUM - stop after NUM files\n");
336 /*fprintf(output, "\n");*/
337 fprintf(output, "Capture output:\n");
338 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
339 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
340 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
341 #endif /* HAVE_LIBPCAP */
342 #ifdef HAVE_PCAP_REMOTE
343 fprintf(output, "RPCAP options:\n");
344 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
346 /*fprintf(output, "\n");*/
347 fprintf(output, "Input file:\n");
348 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
350 fprintf(output, "\n");
351 fprintf(output, "Processing:\n");
352 fprintf(output, " -2 perform a two-pass analysis\n");
353 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
354 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
355 fprintf(output, " syntax\n");
356 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
357 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\n");
358 fprintf(output, " -d %s ...\n", decode_as_arg_template);
359 fprintf(output, " \"Decode As\", see the man page for details\n");
360 fprintf(output, " Example: tcp.port==8888,http\n");
361 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
362 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
363 fprintf(output, " --disable-protocol <proto_name>\n");
364 fprintf(output, " disable dissection of proto_name\n");
365 fprintf(output, " --enable-heuristic <short_name>\n");
366 fprintf(output, " enable dissection of heuristic protocol\n");
367 fprintf(output, " --disable-heuristic <short_name>\n");
368 fprintf(output, " disable dissection of heuristic protocol\n");
370 /*fprintf(output, "\n");*/
371 fprintf(output, "Output:\n");
372 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
373 fprintf(output, " (or to the standard output for \"-\")\n");
374 fprintf(output, " -C <config profile> start with specified configuration profile\n");
375 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
376 fprintf(output, " an empty \"-F\" option will list the file types\n");
377 fprintf(output, " -V add output of packet tree (Packet Details)\n");
378 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
379 fprintf(output, " separated\n");
380 fprintf(output, " -P print packet summary even when writing to a file\n");
381 fprintf(output, " -S <separator> the line separator to print between packets\n");
382 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
383 fprintf(output, " -T pdml|ps|psml|text|fields\n");
384 fprintf(output, " format of text output (def: text)\n");
385 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
386 fprintf(output, " _ws.col.Info)\n");
387 fprintf(output, " this option can be repeated to print multiple fields\n");
388 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
389 fprintf(output, " header=y|n switch headers on and off\n");
390 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
391 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
392 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
393 fprintf(output, " aggregator\n");
394 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
395 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
396 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
397 fprintf(output, " -l flush standard output after each packet\n");
398 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
399 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
400 fprintf(output, " -g enable group read access on the output file(s)\n");
401 fprintf(output, " -W n Save extra information in the file, if supported.\n");
402 fprintf(output, " n = write network address resolution information\n");
403 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
404 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
405 fprintf(output, " --capture-comment <comment>\n");
406 fprintf(output, " add a capture comment to the newly created\n");
407 fprintf(output, " output file (only for pcapng)\n");
409 fprintf(output, "\n");
410 fprintf(output, "Miscellaneous:\n");
411 fprintf(output, " -h display this help and exit\n");
412 fprintf(output, " -v display version info and exit\n");
413 fprintf(output, " -o <name>:<value> ... override preference setting\n");
414 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
415 fprintf(output, " -G [report] dump one of several available reports and exit\n");
416 fprintf(output, " default report=\"fields\"\n");
417 fprintf(output, " use \"-G ?\" for more help\n");
419 fprintf(output, "\n");
420 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
421 fprintf(output, "You might want to reset it\n");
422 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
423 fprintf(output, "\n");
429 glossary_option_help(void)
435 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
437 fprintf(output, "\n");
438 fprintf(output, "Usage: tshark -G [report]\n");
439 fprintf(output, "\n");
440 fprintf(output, "Glossary table reports:\n");
441 fprintf(output, " -G column-formats dump column format codes and exit\n");
442 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
443 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
444 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
445 fprintf(output, " -G fields dump fields glossary and exit\n");
446 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
447 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
448 fprintf(output, " -G plugins dump installed plugins and exit\n");
449 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
450 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
451 fprintf(output, "\n");
452 fprintf(output, "Preference reports:\n");
453 fprintf(output, " -G currentprefs dump current preferences and exit\n");
454 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
455 fprintf(output, "\n");
459 * For a dissector table, print on the stream described by output,
460 * its short name (which is what's used in the "-d" option) and its
464 display_dissector_table_names(const char *table_name, const char *ui_name,
467 if ((prev_display_dissector_name == NULL) ||
468 (strcmp(prev_display_dissector_name, table_name) != 0)) {
469 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
470 prev_display_dissector_name = table_name;
475 * For a dissector handle, print on the stream described by output,
476 * the filter name (which is what's used in the "-d" option) and the full
477 * name for the protocol that corresponds to this handle.
480 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
483 const gchar *proto_filter_name;
484 const gchar *proto_ui_name;
486 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
488 if (proto_id != -1) {
489 proto_filter_name = proto_get_protocol_filter_name(proto_id);
490 proto_ui_name = proto_get_protocol_name(proto_id);
491 g_assert(proto_filter_name != NULL);
492 g_assert(proto_ui_name != NULL);
494 if ((prev_display_dissector_name == NULL) ||
495 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
496 fprintf((FILE *)output, "\t%s (%s)\n",
499 prev_display_dissector_name = proto_filter_name;
505 * The protocol_name_search structure is used by find_protocol_name_func()
506 * to pass parameters and store results
508 struct protocol_name_search{
509 gchar *searched_name; /* Protocol filter name we are looking for */
510 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
511 guint nb_match; /* How many dissectors matched searched_name */
513 typedef struct protocol_name_search *protocol_name_search_t;
516 * This function parses all dissectors associated with a table to find the
517 * one whose protocol has the specified filter name. It is called
518 * as a reference function in a call to dissector_table_foreach_handle.
519 * The name we are looking for, as well as the results, are stored in the
520 * protocol_name_search struct pointed to by user_data.
521 * If called using dissector_table_foreach_handle, we actually parse the
522 * whole list of dissectors.
525 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
529 const gchar *protocol_filter_name;
530 protocol_name_search_t search_info;
534 search_info = (protocol_name_search_t)user_data;
536 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
537 if (proto_id != -1) {
538 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
539 g_assert(protocol_filter_name != NULL);
540 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
542 if (search_info->nb_match == 0) {
543 /* Record this handle only if this is the first match */
544 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
546 search_info->nb_match++;
552 * Allow dissector key names to be sorted alphabetically
556 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
558 return strcmp((const char*)dissector_a, (const char*)dissector_b);
562 * Print all layer type names supported.
563 * We send the output to the stream described by the handle output.
567 fprint_all_layer_types(FILE *output)
570 prev_display_dissector_name = NULL;
571 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
575 * Print all protocol names supported for a specific layer type.
576 * table_name contains the layer type name in which the search is performed.
577 * We send the output to the stream described by the handle output.
581 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
584 prev_display_dissector_name = NULL;
585 dissector_table_foreach_handle(table_name,
586 display_dissector_names,
591 * The function below parses the command-line parameters for the decode as
592 * feature (a string pointer by cl_param).
593 * It checks the format of the command-line, searches for a matching table
594 * and dissector. If a table/dissector match is not found, we display a
595 * summary of the available tables/dissectors (on stderr) and return FALSE.
596 * If everything is fine, we get the "Decode as" preference activated,
597 * then we return TRUE.
600 add_decode_as(const gchar *cl_param)
603 guint32 selector, selector2;
604 gchar *decoded_param;
605 gchar *remaining_param;
607 gchar *dissector_str;
608 dissector_handle_t dissector_matching;
609 dissector_table_t table_matching;
610 ftenum_t dissector_table_selector_type;
611 struct protocol_name_search user_protocol_name;
615 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
618 decoded_param = g_strdup(cl_param);
619 g_assert(decoded_param);
622 /* The lines below will parse this string (modifying it) to extract all
623 necessary information. Note that decoded_param is still needed since
624 strings are not copied - we just save pointers. */
626 /* This section extracts a layer type (table_name) from decoded_param */
627 table_name = decoded_param; /* Layer type string starts from beginning */
629 remaining_param = strchr(table_name, '=');
630 if (remaining_param == NULL) {
631 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
632 /* If the argument does not follow the template, carry on anyway to check
633 if the table name is at least correct. If remaining_param is NULL,
634 we'll exit anyway further down */
637 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
640 /* Remove leading and trailing spaces from the table name */
641 while ( table_name[0] == ' ' )
643 while ( table_name[strlen(table_name) - 1] == ' ' )
644 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
646 /* The following part searches a table matching with the layer type specified */
647 table_matching = NULL;
649 /* Look for the requested table */
650 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
651 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
654 table_matching = find_dissector_table(table_name);
655 if (!table_matching) {
656 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
660 if (!table_matching) {
661 /* Display a list of supported layer types to help the user, if the
662 specified layer type was not found */
663 cmdarg_err("Valid layer types are:");
664 fprint_all_layer_types(stderr);
666 if (remaining_param == NULL || !table_matching) {
667 /* Exit if the layer type was not found, or if no '=' separator was found
669 g_free(decoded_param);
673 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
674 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
677 remaining_param++; /* Move to the second '=' */
678 *remaining_param = '\0'; /* Remove the second '=' */
680 remaining_param++; /* Position after the layer type string */
682 /* This section extracts a selector value (selector_str) from decoded_param */
684 selector_str = remaining_param; /* Next part starts with the selector number */
686 remaining_param = strchr(selector_str, ',');
687 if (remaining_param == NULL) {
688 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
689 /* If the argument does not follow the template, carry on anyway to check
690 if the selector value is at least correct. If remaining_param is NULL,
691 we'll exit anyway further down */
694 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
697 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
699 switch (dissector_table_selector_type) {
705 /* The selector for this table is an unsigned number. Parse it as such.
706 There's no need to remove leading and trailing spaces from the
707 selector number string, because sscanf will do that for us. */
708 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
713 if (op != ':' && op != '-') {
714 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
715 g_free(decoded_param);
719 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
720 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
721 g_free(decoded_param);
725 else if (selector2 < selector) {
726 /* We could swap them for the user, but maybe it's better to call
727 * this out as an error in case it's not what was intended? */
728 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
729 g_free(decoded_param);
734 cmdarg_err("Invalid selector number \"%s\"", selector_str);
735 g_free(decoded_param);
744 /* The selector for this table is a string. */
748 /* There are currently no dissector tables with any types other
749 than the ones listed above. */
750 g_assert_not_reached();
753 if (remaining_param == NULL) {
754 /* Exit if no ',' separator was found (see above) */
755 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
756 fprint_all_protocols_for_layer_types(stderr, table_name);
757 g_free(decoded_param);
761 remaining_param++; /* Position after the selector number string */
763 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
765 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
767 /* Remove leading and trailing spaces from the dissector name */
768 while ( dissector_str[0] == ' ' )
770 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
771 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
773 dissector_matching = NULL;
775 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
776 if ( ! (*dissector_str) ) { /* Is the dissector name empty, if so, don't even search for a matching dissector and display all dissectors found for the selected table */
777 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
780 user_protocol_name.nb_match = 0;
781 user_protocol_name.searched_name = dissector_str;
782 user_protocol_name.matched_handle = NULL;
784 dissector_table_foreach_handle(table_name, find_protocol_name_func, &user_protocol_name); /* Go and perform the search for this dissector in the this table's dissectors' names and shortnames */
786 if (user_protocol_name.nb_match != 0) {
787 dissector_matching = user_protocol_name.matched_handle;
788 if (user_protocol_name.nb_match > 1) {
789 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
793 /* OK, check whether the problem is that there isn't any such
794 protocol, or that there is but it's not specified as a protocol
795 that's valid for that dissector table.
796 Note, we don't exit here, but dissector_matching will remain NULL,
798 if (proto_get_id_by_filter_name(dissector_str) == -1) {
799 /* No such protocol */
800 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
802 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
803 dissector_str, table_name);
808 if (!dissector_matching) {
809 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
810 fprint_all_protocols_for_layer_types(stderr, table_name);
811 g_free(decoded_param);
815 /* This is the end of the code that parses the command-line options.
816 All information is now stored in the variables:
820 The above variables that are strings are still pointing to areas within
821 decoded_parm. decoded_parm thus still needs to be kept allocated in
822 until we stop needing these variables
823 decoded_param will be deallocated at each exit point of this function */
826 /* We now have a pointer to the handle for the requested dissector
827 (requested protocol) inside the variable dissector_matching */
828 switch (dissector_table_selector_type) {
834 /* The selector for this table is an unsigned number. */
836 dissector_change_uint(table_name, selector, dissector_matching);
837 } else if (op == ':') {
838 for (i = selector; i < (guint64)selector + selector2; i++) {
839 dissector_change_uint(table_name, (guint32)i, dissector_matching);
841 } else { /* op == '-' */
842 for (i = selector; i <= selector2; i++) {
843 dissector_change_uint(table_name, (guint32)i, dissector_matching);
852 /* The selector for this table is a string. */
853 dissector_change_string(table_name, selector_str, dissector_matching);
857 /* There are currently no dissector tables with any types other
858 than the ones listed above. */
859 g_assert_not_reached();
861 g_free(decoded_param); /* "Decode As" rule has been successfully added */
866 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
867 const gchar *message, gpointer user_data)
869 /* ignore log message, if log_level isn't interesting based
870 upon the console log preferences.
871 If the preferences haven't been loaded loaded yet, display the
874 The default console_log_level preference value is such that only
875 ERROR, CRITICAL and WARNING level messages are processed;
876 MESSAGE, INFO and DEBUG level messages are ignored.
878 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
879 ERROR and CRITICAL level messages so the current code is a behavioral
880 change. The current behavior is the same as in Wireshark.
882 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
883 prefs.console_log_level != 0) {
887 g_log_default_handler(log_domain, log_level, message, user_data);
892 output_file_description(const char *fname)
894 char *save_file_string;
896 /* Get a string that describes what we're writing to */
897 if (strcmp(fname, "-") == 0) {
898 /* We're writing to the standard output */
899 save_file_string = g_strdup("standard output");
901 /* We're writing to a file with the name in save_file */
902 save_file_string = g_strdup_printf("file \"%s\"", fname);
904 return save_file_string;
908 print_current_user(void) {
909 gchar *cur_user, *cur_group;
911 if (started_with_special_privs()) {
912 cur_user = get_cur_username();
913 cur_group = get_cur_groupname();
914 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
915 cur_user, cur_group);
918 if (running_with_special_privs()) {
919 fprintf(stderr, " This could be dangerous.");
921 fprintf(stderr, "\n");
926 get_tshark_compiled_version_info(GString *str)
928 /* Capture libraries */
929 get_compiled_caplibs_version(str);
932 g_string_append(str, ", ");
934 g_string_append(str, "with libz ");
936 g_string_append(str, ZLIB_VERSION);
937 #else /* ZLIB_VERSION */
938 g_string_append(str, "(version unknown)");
939 #endif /* ZLIB_VERSION */
940 #else /* HAVE_LIBZ */
941 g_string_append(str, "without libz");
942 #endif /* HAVE_LIBZ */
946 get_tshark_runtime_version_info(GString *str)
949 /* Capture libraries */
950 g_string_append(str, ", ");
951 get_runtime_caplibs_version(str);
955 #if defined(HAVE_LIBZ) && !defined(_WIN32)
956 g_string_append_printf(str, ", with libz %s", zlibVersion());
959 /* stuff used by libwireshark */
960 epan_get_runtime_version_info(str);
964 main(int argc, char *argv[])
966 GString *comp_info_str;
967 GString *runtime_info_str;
968 char *init_progfile_dir_error;
971 static const struct option long_options[] = {
972 {(char *)"help", no_argument, NULL, 'h'},
973 {(char *)"version", no_argument, NULL, 'v'},
974 LONGOPT_CAPTURE_COMMON
978 gboolean arg_error = FALSE;
984 char *gpf_path, *pf_path;
985 char *gdp_path, *dp_path;
986 int gpf_open_errno, gpf_read_errno;
987 int pf_open_errno, pf_read_errno;
988 int gdp_open_errno, gdp_read_errno;
989 int dp_open_errno, dp_read_errno;
991 volatile int exit_status = 0;
993 gboolean list_link_layer_types = FALSE;
994 gboolean start_capture = FALSE;
999 gboolean capture_option_specified = FALSE;
1001 gboolean quiet = FALSE;
1002 #ifdef PCAP_NG_DEFAULT
1003 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
1005 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
1007 volatile gboolean out_file_name_res = FALSE;
1008 volatile int in_file_type = WTAP_TYPE_AUTO;
1009 gchar *volatile cf_name = NULL;
1010 gchar *rfilter = NULL;
1011 gchar *dfilter = NULL;
1012 #ifdef HAVE_PCAP_OPEN_DEAD
1013 struct bpf_program fcode;
1015 dfilter_t *rfcode = NULL;
1016 dfilter_t *dfcode = NULL;
1021 gchar *output_only = NULL;
1022 GSList *disable_protocol_slist = NULL;
1023 GSList *enable_heur_slist = NULL;
1024 GSList *disable_heur_slist = NULL;
1027 * The leading + ensures that getopt_long() does not permute the argv[]
1030 * We have to make sure that the first getopt_long() preserves the content
1031 * of argv[] for the subsequent getopt_long() call.
1033 * We use getopt_long() in both cases to ensure that we're using a routine
1034 * whose permutation behavior we can control in the same fashion on all
1035 * platforms, and so that, if we ever need to process a long argument before
1036 * doing further initialization, we can do so.
1038 * Glibc and Solaris libc document that a leading + disables permutation
1039 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
1040 * and OS X don't document it, but do so anyway.
1042 * We do *not* use a leading - because the behavior of a leading - is
1043 * platform-dependent.
1045 #define OPTSTRING "+2" OPTSTRING_CAPTURE_COMMON "C:d:e:E:F:gG:hH:" "K:lnN:o:O:PqQr:R:S:t:T:u:vVw:W:xX:Y:z:"
1047 static const char optstring[] = OPTSTRING;
1049 tshark_debug("tshark started with %d args", argc);
1051 /* Set the C-language locale to the native environment. */
1052 setlocale(LC_ALL, "");
1054 cmdarg_err_init(failure_message, failure_message_cont);
1057 arg_list_utf_16to8(argc, argv);
1058 create_app_running_mutex();
1059 #if !GLIB_CHECK_VERSION(2,31,0)
1060 g_thread_init(NULL);
1065 * Get credential information for later use, and drop privileges
1066 * before doing anything else.
1067 * Let the user know if anything happened.
1069 init_process_policies();
1070 relinquish_special_privs_perm();
1071 print_current_user();
1074 * Attempt to get the pathname of the executable file.
1076 init_progfile_dir_error = init_progfile_dir(argv[0], (void *)main);
1077 if (init_progfile_dir_error != NULL) {
1078 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1079 init_progfile_dir_error);
1082 initialize_funnel_ops();
1085 /* Load wpcap if possible. Do this before collecting the run-time version information */
1088 /* Warn the user if npf.sys isn't loaded. */
1089 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
1090 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
1091 "capturing or\nlisting interfaces.\n");
1095 /* Get the compile-time version information string */
1096 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1097 epan_get_compiled_version_info);
1099 /* Get the run-time version information string */
1100 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1102 /* Add it to the information to be reported on a crash. */
1103 ws_add_crash_info("TShark (Wireshark) %s\n"
1108 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
1109 g_string_free(comp_info_str, TRUE);
1110 g_string_free(runtime_info_str, TRUE);
1113 * In order to have the -X opts assigned before the wslua machine starts
1114 * we need to call getopt_long before epan_init() gets called.
1116 * In order to handle, for example, -o options, we also need to call it
1117 * *after* epan_init() gets called, so that the dissectors have had a
1118 * chance to register their preferences.
1120 * XXX - can we do this all with one getopt_long() call, saving the
1121 * arguments we can't handle until after initializing libwireshark,
1122 * and then process them after initializing libwireshark?
1126 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1128 case 'C': /* Configuration Profile */
1129 if (profile_exists (optarg, FALSE)) {
1130 set_profile_name (optarg);
1132 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1136 case 'P': /* Print packet summary info even when writing to a file */
1137 print_packet_info = TRUE;
1138 print_summary = TRUE;
1140 case 'O': /* Only output these protocols */
1141 output_only = g_strdup(optarg);
1143 case 'V': /* Verbose */
1144 print_details = TRUE;
1145 print_packet_info = TRUE;
1147 case 'x': /* Print packet data in hex (and ASCII) */
1149 /* The user asked for hex output, so let's ensure they get it,
1150 * even if they're writing to a file.
1152 print_packet_info = TRUE;
1163 * Print packet summary information is the default, unless either -V or -x
1164 * were specified and -P was not. Note that this is new behavior, which
1165 * allows for the possibility of printing only hex/ascii output without
1166 * necessarily requiring that either the summary or details be printed too.
1168 if (print_summary == -1)
1169 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1171 /** Send All g_log messages to our own handler **/
1175 G_LOG_LEVEL_CRITICAL|
1176 G_LOG_LEVEL_WARNING|
1177 G_LOG_LEVEL_MESSAGE|
1180 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1182 g_log_set_handler(NULL,
1183 (GLogLevelFlags)log_flags,
1184 tshark_log_handler, NULL /* user_data */);
1185 g_log_set_handler(LOG_DOMAIN_MAIN,
1186 (GLogLevelFlags)log_flags,
1187 tshark_log_handler, NULL /* user_data */);
1190 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1191 (GLogLevelFlags)log_flags,
1192 tshark_log_handler, NULL /* user_data */);
1193 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1194 (GLogLevelFlags)log_flags,
1195 tshark_log_handler, NULL /* user_data */);
1198 init_report_err(failure_message, open_failure_message, read_failure_message,
1199 write_failure_message);
1202 capture_opts_init(&global_capture_opts);
1203 capture_session_init(&global_capture_session, &cfile);
1206 timestamp_set_type(TS_RELATIVE);
1207 timestamp_set_precision(TS_PREC_AUTO);
1208 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1210 init_open_routines();
1213 /* Register all the plugin types we have. */
1214 epan_register_plugin_types(); /* Types known to libwireshark */
1215 wtap_register_plugin_types(); /* Types known to libwiretap */
1217 /* Scan for plugins. This does *not* call their registration routines;
1218 that's done later. */
1221 /* Register all libwiretap plugin modules. */
1222 register_all_wiretap_modules();
1225 /* Register all dissectors; we must do this before checking for the
1226 "-G" flag, as the "-G" flag dumps information registered by the
1227 dissectors, and we must do it before we read the preferences, in
1228 case any dissectors register preferences. */
1229 if (!epan_init(register_all_protocols, register_all_protocol_handoffs, NULL,
1233 /* Register all tap listeners; we do this before we parse the arguments,
1234 as the "-z" argument can specify a registered tap. */
1236 /* we register the plugin taps before the other taps because
1237 stats_tree taps plugins will be registered as tap listeners
1238 by stats_tree_stat.c and need to registered before that */
1240 register_all_plugin_tap_listeners();
1242 register_all_tap_listeners();
1243 conversation_table_set_gui_info(init_iousers);
1244 hostlist_table_set_gui_info(init_hostlists);
1245 srt_table_iterate_tables(register_srt_tables, NULL);
1246 rtd_table_iterate_tables(register_rtd_tables, NULL);
1247 new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
1249 /* If invoked with the "-G" flag, we dump out information based on
1250 the argument to the "-G" flag; if no argument is specified,
1251 for backwards compatibility we dump out a glossary of display
1254 XXX - we do this here, for now, to support "-G" with no arguments.
1255 If none of our build or other processes uses "-G" with no arguments,
1256 we can just process it with the other arguments. */
1257 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1258 proto_initialize_all_prefixes();
1261 proto_registrar_dump_fields();
1263 if (strcmp(argv[2], "column-formats") == 0)
1264 column_dump_column_formats();
1265 else if (strcmp(argv[2], "currentprefs") == 0) {
1266 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1267 &pf_open_errno, &pf_read_errno, &pf_path);
1270 else if (strcmp(argv[2], "decodes") == 0)
1271 dissector_dump_decodes();
1272 else if (strcmp(argv[2], "defaultprefs") == 0)
1274 else if (strcmp(argv[2], "dissector-tables") == 0)
1275 dissector_dump_dissector_tables();
1276 else if (strcmp(argv[2], "fieldcount") == 0) {
1277 /* return value for the test suite */
1278 return proto_registrar_dump_fieldcount();
1279 } else if (strcmp(argv[2], "fields") == 0)
1280 proto_registrar_dump_fields();
1281 else if (strcmp(argv[2], "ftypes") == 0)
1282 proto_registrar_dump_ftypes();
1283 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1284 dissector_dump_heur_decodes();
1285 else if (strcmp(argv[2], "plugins") == 0) {
1290 wslua_plugins_dump_all();
1293 else if (strcmp(argv[2], "protocols") == 0)
1294 proto_registrar_dump_protocols();
1295 else if (strcmp(argv[2], "values") == 0)
1296 proto_registrar_dump_values();
1297 else if (strcmp(argv[2], "?") == 0)
1298 glossary_option_help();
1299 else if (strcmp(argv[2], "-?") == 0)
1300 glossary_option_help();
1302 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1309 tshark_debug("tshark reading preferences");
1311 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1312 &pf_open_errno, &pf_read_errno, &pf_path);
1313 if (gpf_path != NULL) {
1314 if (gpf_open_errno != 0) {
1315 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1316 pf_path, g_strerror(gpf_open_errno));
1318 if (gpf_read_errno != 0) {
1319 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1320 pf_path, g_strerror(gpf_read_errno));
1323 if (pf_path != NULL) {
1324 if (pf_open_errno != 0) {
1325 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1326 g_strerror(pf_open_errno));
1328 if (pf_read_errno != 0) {
1329 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1330 pf_path, g_strerror(pf_read_errno));
1336 /* Read the disabled protocols file. */
1337 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1338 &dp_path, &dp_open_errno, &dp_read_errno);
1339 read_disabled_heur_dissector_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1340 &dp_path, &dp_open_errno, &dp_read_errno);
1341 if (gdp_path != NULL) {
1342 if (gdp_open_errno != 0) {
1343 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1344 gdp_path, g_strerror(gdp_open_errno));
1346 if (gdp_read_errno != 0) {
1347 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1348 gdp_path, g_strerror(gdp_read_errno));
1352 if (dp_path != NULL) {
1353 if (dp_open_errno != 0) {
1355 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1356 g_strerror(dp_open_errno));
1358 if (dp_read_errno != 0) {
1360 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1361 g_strerror(dp_read_errno));
1366 cap_file_init(&cfile);
1368 /* Print format defaults to this. */
1369 print_format = PR_FMT_TEXT;
1371 output_fields = output_fields_new();
1374 * To reset the options parser, set optreset to 1 on platforms that
1375 * have optreset (documented in *BSD and OS X, apparently present but
1376 * not documented in Solaris - the Illumos repository seems to
1377 * suggest that the first Solaris getopt_long(), at least as of 2004,
1378 * was based on the NetBSD one, it had optreset) and set optind to 1,
1379 * and set optind to 0 otherwise (documented as working in the GNU
1380 * getopt_long(). Setting optind to 0 didn't originally work in the
1381 * NetBSD one, but that was added later - we don't want to depend on
1382 * it if we have optreset).
1384 * Also reset opterr to 1, so that error messages are printed by
1387 #ifdef HAVE_OPTRESET
1395 /* Now get our args */
1396 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1398 case '2': /* Perform two pass analysis */
1399 perform_two_pass_analysis = TRUE;
1401 case 'a': /* autostop criteria */
1402 case 'b': /* Ringbuffer option */
1403 case 'c': /* Capture x packets */
1404 case 'f': /* capture filter */
1405 case 'g': /* enable group read access on file(s) */
1406 case 'i': /* Use interface x */
1407 case 'p': /* Don't capture in promiscuous mode */
1408 #ifdef HAVE_PCAP_REMOTE
1409 case 'A': /* Authentication */
1411 #ifdef HAVE_PCAP_CREATE
1412 case 'I': /* Capture in monitor mode, if available */
1414 case 's': /* Set the snapshot (capture) length */
1415 case 'w': /* Write to capture file x */
1416 case 'y': /* Set the pcap data link type */
1417 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1418 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1419 case 'B': /* Buffer size */
1422 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1429 * Output file name, if we're reading a file and writing to another
1432 output_file_name = optarg;
1434 capture_option_specified = TRUE;
1440 /* already processed; just ignore it now */
1442 case 'd': /* Decode as rule */
1443 if (!add_decode_as(optarg))
1446 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1447 case 'K': /* Kerberos keytab file */
1448 read_keytab_file(optarg);
1451 case 'D': /* Print a list of capture devices and exit */
1453 if_list = capture_interface_list(&err, &err_str,NULL);
1454 if (if_list == NULL) {
1456 cmdarg_err("There are no interfaces on which a capture can be done");
1458 cmdarg_err("%s", err_str);
1463 capture_opts_print_interfaces(if_list);
1464 free_interface_list(if_list);
1467 capture_option_specified = TRUE;
1473 output_fields_add(output_fields, optarg);
1477 if (!output_fields_set_option(output_fields, optarg)) {
1478 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1479 output_fields_list_options(stderr);
1484 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1485 if (out_file_type < 0) {
1486 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1487 list_capture_types();
1491 case 'W': /* Select extra information to save in our capture file */
1492 /* This is patterned after the -N flag which may not be the best idea. */
1493 if (strchr(optarg, 'n')) {
1494 out_file_name_res = TRUE;
1496 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1497 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1501 case 'H': /* Read address to name mappings from a hosts file */
1502 if (! add_hosts_file(optarg))
1504 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1507 out_file_name_res = TRUE;
1510 case 'h': /* Print help and exit */
1511 printf("TShark (Wireshark) %s\n"
1512 "Dump and analyze network traffic.\n"
1513 "See https://www.wireshark.org for more information.\n",
1514 get_ws_vcs_version_info());
1515 print_usage(stdout);
1518 case 'l': /* "Line-buffer" standard output */
1519 /* This isn't line-buffering, strictly speaking, it's just
1520 flushing the standard output after the information for
1521 each packet is printed; however, that should be good
1522 enough for all the purposes to which "-l" is put (and
1523 is probably actually better for "-V", as it does fewer
1526 See the comment in "process_packet()" for an explanation of
1527 why we do that, and why we don't just use "setvbuf()" to
1528 make the standard output line-buffered (short version: in
1529 Windows, "line-buffered" is the same as "fully-buffered",
1530 and the output buffer is only flushed when it fills up). */
1531 line_buffered = TRUE;
1533 case 'L': /* Print list of link-layer types and exit */
1535 list_link_layer_types = TRUE;
1537 capture_option_specified = TRUE;
1541 case 'n': /* No name resolution */
1542 disable_name_resolution();
1544 case 'N': /* Select what types of addresses/port #s to resolve */
1545 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1546 if (badopt != '\0') {
1547 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1549 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1550 "\t'd' to enable address resolution from captured DNS packets\n"
1551 "\t'm' to enable MAC address resolution\n"
1552 "\t'n' to enable network address resolution\n"
1553 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1554 "\t for network address resolution\n"
1555 "\t't' to enable transport-layer port number resolution");
1559 case 'o': /* Override preference from command line */
1560 switch (prefs_set_pref(optarg)) {
1565 case PREFS_SET_SYNTAX_ERR:
1566 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1570 case PREFS_SET_NO_SUCH_PREF:
1571 case PREFS_SET_OBSOLETE:
1572 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1577 case 'q': /* Quiet */
1580 case 'Q': /* Really quiet */
1582 really_quiet = TRUE;
1584 case 'r': /* Read capture file x */
1585 cf_name = g_strdup(optarg);
1587 case 'R': /* Read file filter */
1591 /* already processed; just ignore it now */
1593 case 'S': /* Set the line Separator to be printed between packets */
1596 case 't': /* Time stamp type */
1597 if (strcmp(optarg, "r") == 0)
1598 timestamp_set_type(TS_RELATIVE);
1599 else if (strcmp(optarg, "a") == 0)
1600 timestamp_set_type(TS_ABSOLUTE);
1601 else if (strcmp(optarg, "ad") == 0)
1602 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1603 else if (strcmp(optarg, "adoy") == 0)
1604 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1605 else if (strcmp(optarg, "d") == 0)
1606 timestamp_set_type(TS_DELTA);
1607 else if (strcmp(optarg, "dd") == 0)
1608 timestamp_set_type(TS_DELTA_DIS);
1609 else if (strcmp(optarg, "e") == 0)
1610 timestamp_set_type(TS_EPOCH);
1611 else if (strcmp(optarg, "u") == 0)
1612 timestamp_set_type(TS_UTC);
1613 else if (strcmp(optarg, "ud") == 0)
1614 timestamp_set_type(TS_UTC_WITH_YMD);
1615 else if (strcmp(optarg, "udoy") == 0)
1616 timestamp_set_type(TS_UTC_WITH_YDOY);
1618 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1619 cmdarg_err_cont("\t\"a\" for absolute\n"
1620 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1621 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1622 "\t\"d\" for delta\n"
1623 "\t\"dd\" for delta displayed\n"
1624 "\t\"e\" for epoch\n"
1625 "\t\"r\" for relative\n"
1626 "\t\"u\" for absolute UTC\n"
1627 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1628 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1632 case 'T': /* printing Type */
1633 print_packet_info = TRUE;
1634 if (strcmp(optarg, "text") == 0) {
1635 output_action = WRITE_TEXT;
1636 print_format = PR_FMT_TEXT;
1637 } else if (strcmp(optarg, "ps") == 0) {
1638 output_action = WRITE_TEXT;
1639 print_format = PR_FMT_PS;
1640 } else if (strcmp(optarg, "pdml") == 0) {
1641 output_action = WRITE_XML;
1642 print_details = TRUE; /* Need details */
1643 print_summary = FALSE; /* Don't allow summary */
1644 } else if (strcmp(optarg, "psml") == 0) {
1645 output_action = WRITE_XML;
1646 print_details = FALSE; /* Don't allow details */
1647 print_summary = TRUE; /* Need summary */
1648 } else if (strcmp(optarg, "fields") == 0) {
1649 output_action = WRITE_FIELDS;
1650 print_details = TRUE; /* Need full tree info */
1651 print_summary = FALSE; /* Don't allow summary */
1653 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1654 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1655 "\t specified by the -E option.\n"
1656 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1657 "\t details of a decoded packet. This information is equivalent to\n"
1658 "\t the packet details printed with the -V flag.\n"
1659 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1660 "\t the packets, or a multi-line view of the details of each of\n"
1661 "\t the packets, depending on whether the -V flag was specified.\n"
1662 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1663 "\t summary information of a decoded packet. This information is\n"
1664 "\t equivalent to the information shown in the one-line summary\n"
1665 "\t printed by default.\n"
1666 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1667 "\t packets, or a multi-line view of the details of each of the\n"
1668 "\t packets, depending on whether the -V flag was specified.\n"
1669 "\t This is the default.");
1673 case 'u': /* Seconds type */
1674 if (strcmp(optarg, "s") == 0)
1675 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1676 else if (strcmp(optarg, "hms") == 0)
1677 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1679 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1680 cmdarg_err_cont("\t\"s\" for seconds\n"
1681 "\t\"hms\" for hours, minutes and seconds");
1685 case 'v': /* Show version and exit */
1686 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1687 epan_get_compiled_version_info);
1688 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1689 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1690 g_string_free(comp_info_str, TRUE);
1691 g_string_free(runtime_info_str, TRUE);
1692 /* We don't really have to cleanup here, but it's a convenient way to test
1693 * start-up and shut-down of the epan library without any UI-specific
1694 * cruft getting in the way. Makes the results of running
1695 * $ ./tools/valgrind-wireshark -n
1696 * much more useful. */
1699 case 'O': /* Only output these protocols */
1700 /* already processed; just ignore it now */
1702 case 'V': /* Verbose */
1703 /* already processed; just ignore it now */
1705 case 'x': /* Print packet data in hex (and ASCII) */
1706 /* already processed; just ignore it now */
1709 /* already processed; just ignore it now */
1715 /* We won't call the init function for the stat this soon
1716 as it would disallow MATE's fields (which are registered
1717 by the preferences set callback) from being used as
1718 part of a tap filter. Instead, we just add the argument
1719 to a list of stat arguments. */
1720 if (strcmp("help", optarg) == 0) {
1721 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1722 list_stat_cmd_args();
1725 if (!process_stat_cmd_arg(optarg)) {
1726 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1727 list_stat_cmd_args();
1731 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1732 disable_protocol_slist = g_slist_append(disable_protocol_slist, optarg);
1734 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1735 enable_heur_slist = g_slist_append(enable_heur_slist, optarg);
1737 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1738 disable_heur_slist = g_slist_append(disable_heur_slist, optarg);
1742 case '?': /* Bad flag - print usage message */
1745 list_capture_types();
1748 print_usage(stderr);
1755 /* If we specified output fields, but not the output field type... */
1756 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1757 cmdarg_err("Output fields were specified with \"-e\", "
1758 "but \"-Tfields\" was not specified.");
1760 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1761 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1762 "specified with \"-e\".");
1767 /* If no capture filter or display filter has been specified, and there are
1768 still command-line arguments, treat them as the tokens of a capture
1769 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1770 flag was specified. */
1771 if (optind < argc) {
1772 if (cf_name != NULL) {
1773 if (dfilter != NULL) {
1774 cmdarg_err("Display filters were specified both with \"-d\" "
1775 "and with additional command-line arguments.");
1778 dfilter = get_args_as_string(argc, argv, optind);
1783 if (global_capture_opts.default_options.cfilter) {
1784 cmdarg_err("A default capture filter was specified both with \"-f\""
1785 " and with additional command-line arguments.");
1788 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1789 interface_options interface_opts;
1790 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1791 if (interface_opts.cfilter == NULL) {
1792 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1793 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1794 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1796 cmdarg_err("A capture filter was specified both with \"-f\""
1797 " and with additional command-line arguments.");
1801 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1803 capture_option_specified = TRUE;
1809 if (!global_capture_opts.saving_to_file) {
1810 /* We're not saving the capture to a file; if "-q" wasn't specified,
1811 we should print packet information */
1813 print_packet_info = TRUE;
1815 /* We're saving to a file; if we're writing to the standard output.
1816 and we'll also be writing dissected packets to the standard
1817 output, reject the request. At best, we could redirect that
1818 to the standard error; we *can't* write both to the standard
1819 output and have either of them be useful. */
1820 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1821 cmdarg_err("You can't write both raw packet data and dissected packets"
1822 " to the standard output.");
1827 /* We're not saving the capture to a file; if "-q" wasn't specified,
1828 we should print packet information */
1830 print_packet_info = TRUE;
1833 #ifndef HAVE_LIBPCAP
1834 if (capture_option_specified)
1835 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1838 print_usage(stderr);
1843 if (output_action != WRITE_TEXT) {
1844 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1849 if (output_only != NULL) {
1852 if (!print_details) {
1853 cmdarg_err("-O requires -V");
1857 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1858 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1859 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1863 if (rfilter != NULL && !perform_two_pass_analysis) {
1864 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1869 if (list_link_layer_types) {
1870 /* We're supposed to list the link-layer types for an interface;
1871 did the user also specify a capture file to be read? */
1873 /* Yes - that's bogus. */
1874 cmdarg_err("You can't specify -L and a capture file to be read.");
1877 /* No - did they specify a ring buffer option? */
1878 if (global_capture_opts.multi_files_on) {
1879 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1885 * "-r" was specified, so we're reading a capture file.
1886 * Capture options don't apply here.
1889 /* We don't support capture filters when reading from a capture file
1890 (the BPF compiler doesn't support all link-layer types that we
1891 support in capture files we read). */
1892 if (global_capture_opts.default_options.cfilter) {
1893 cmdarg_err("Only read filters, not capture filters, "
1894 "can be specified when reading a capture file.");
1897 if (global_capture_opts.multi_files_on) {
1898 cmdarg_err("Multiple capture files requested, but "
1899 "a capture isn't being done.");
1902 if (global_capture_opts.has_file_duration) {
1903 cmdarg_err("Switching capture files after a time interval was specified, but "
1904 "a capture isn't being done.");
1907 if (global_capture_opts.has_ring_num_files) {
1908 cmdarg_err("A ring buffer of capture files was specified, but "
1909 "a capture isn't being done.");
1912 if (global_capture_opts.has_autostop_files) {
1913 cmdarg_err("A maximum number of capture files was specified, but "
1914 "a capture isn't being done.");
1917 if (global_capture_opts.capture_comment) {
1918 cmdarg_err("A capture comment was specified, but "
1919 "a capture isn't being done.\nThere's no support for adding "
1920 "a capture comment to an existing capture file.");
1924 /* Note: TShark now allows the restriction of a _read_ file by packet count
1925 * and byte count as well as a write file. Other autostop options remain valid
1926 * only for a write file.
1928 if (global_capture_opts.has_autostop_duration) {
1929 cmdarg_err("A maximum capture time was specified, but "
1930 "a capture isn't being done.");
1935 * "-r" wasn't specified, so we're doing a live capture.
1937 if (perform_two_pass_analysis) {
1938 /* Two-pass analysis doesn't work with live capture since it requires us
1939 * to buffer packets until we've read all of them, but a live capture
1940 * has no useful/meaningful definition of "all" */
1941 cmdarg_err("Live captures do not support two-pass analysis.");
1945 if (global_capture_opts.saving_to_file) {
1946 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1948 /* When capturing, we only support writing pcap or pcap-ng format. */
1949 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1950 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1951 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1954 if (global_capture_opts.capture_comment &&
1955 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1956 cmdarg_err("A capture comment can only be written to a pcapng file.");
1959 if (global_capture_opts.multi_files_on) {
1960 /* Multiple-file mode doesn't work under certain conditions:
1961 a) it doesn't work if you're writing to the standard output;
1962 b) it doesn't work if you're writing to a pipe;
1964 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1965 cmdarg_err("Multiple capture files requested, but "
1966 "the capture is being written to the standard output.");
1969 if (global_capture_opts.output_to_pipe) {
1970 cmdarg_err("Multiple capture files requested, but "
1971 "the capture file is a pipe.");
1974 if (!global_capture_opts.has_autostop_filesize &&
1975 !global_capture_opts.has_file_duration) {
1976 cmdarg_err("Multiple capture files requested, but "
1977 "no maximum capture file size or duration was specified.");
1981 /* Currently, we don't support read or display filters when capturing
1982 and saving the packets. */
1983 if (rfilter != NULL) {
1984 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1987 if (dfilter != NULL) {
1988 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1991 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1993 /* They didn't specify a "-w" flag, so we won't be saving to a
1994 capture file. Check for options that only make sense if
1995 we're saving to a file. */
1996 if (global_capture_opts.has_autostop_filesize) {
1997 cmdarg_err("Maximum capture file size specified, but "
1998 "capture isn't being saved to a file.");
2001 if (global_capture_opts.multi_files_on) {
2002 cmdarg_err("Multiple capture files requested, but "
2003 "the capture isn't being saved to a file.");
2006 if (global_capture_opts.capture_comment) {
2007 cmdarg_err("A capture comment was specified, but "
2008 "the capture isn't being saved to a file.");
2017 /* Start windows sockets */
2018 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
2021 /* Notify all registered modules that have had any of their preferences
2022 changed either from one of the preferences file or from the command
2023 line that their preferences have changed. */
2026 /* At this point MATE will have registered its field array so we can
2027 have a tap filter with one of MATE's late-registered fields as part
2028 of the filter. We can now process all the "-z" arguments. */
2029 start_requested_stats();
2031 /* At this point MATE will have registered its field array so we can
2032 check if the fields specified by the user are all good.
2036 GSList *invalid_fields = output_fields_valid(output_fields);
2037 if (invalid_fields != NULL) {
2039 cmdarg_err("Some fields aren't valid:");
2040 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
2041 cmdarg_err_cont("\t%s", (gchar *)it->data);
2043 g_slist_free(invalid_fields);
2048 /* We currently don't support taps, or printing dissected packets,
2049 if we're writing to a pipe. */
2050 if (global_capture_opts.saving_to_file &&
2051 global_capture_opts.output_to_pipe) {
2052 if (tap_listeners_require_dissection()) {
2053 cmdarg_err("Taps aren't supported when saving to a pipe.");
2056 if (print_packet_info) {
2057 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
2063 if (ex_opt_count("read_format") > 0) {
2064 const gchar* name = ex_opt_get_next("read_format");
2065 in_file_type = open_info_name_to_type(name);
2066 if (in_file_type == WTAP_TYPE_AUTO) {
2067 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
2068 list_read_capture_types();
2073 /* disabled protocols as per configuration file */
2074 if (gdp_path == NULL && dp_path == NULL) {
2075 set_disabled_protos_list();
2076 set_disabled_heur_dissector_list();
2079 if(disable_protocol_slist) {
2080 GSList *proto_disable;
2081 for (proto_disable = disable_protocol_slist; proto_disable != NULL; proto_disable = g_slist_next(proto_disable))
2083 proto_disable_proto_by_name((char*)proto_disable->data);
2087 if(enable_heur_slist) {
2088 GSList *heur_enable;
2089 for (heur_enable = enable_heur_slist; heur_enable != NULL; heur_enable = g_slist_next(heur_enable))
2091 proto_enable_heuristic_by_name((char*)heur_enable->data, TRUE);
2095 if(disable_heur_slist) {
2096 GSList *heur_disable;
2097 for (heur_disable = disable_heur_slist; heur_disable != NULL; heur_disable = g_slist_next(heur_disable))
2099 proto_enable_heuristic_by_name((char*)heur_disable->data, FALSE);
2103 /* Build the column format array */
2104 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
2107 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
2108 capture_opts_trim_ring_num_files(&global_capture_opts);
2111 if (rfilter != NULL) {
2112 tshark_debug("Compiling read filter: '%s'", rfilter);
2113 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
2114 cmdarg_err("%s", err_msg);
2117 #ifdef HAVE_PCAP_OPEN_DEAD
2121 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2123 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
2125 " Note: That read filter code looks like a valid capture filter;\n"
2126 " maybe you mixed them up?");
2135 cfile.rfcode = rfcode;
2137 if (dfilter != NULL) {
2138 tshark_debug("Compiling display filter: '%s'", dfilter);
2139 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
2140 cmdarg_err("%s", err_msg);
2143 #ifdef HAVE_PCAP_OPEN_DEAD
2147 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2149 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
2151 " Note: That display filter code looks like a valid capture filter;\n"
2152 " maybe you mixed them up?");
2161 cfile.dfcode = dfcode;
2163 if (print_packet_info) {
2164 /* If we're printing as text or PostScript, we have
2165 to create a print stream. */
2166 if (output_action == WRITE_TEXT) {
2167 switch (print_format) {
2170 print_stream = print_stream_text_stdio_new(stdout);
2174 print_stream = print_stream_ps_stdio_new(stdout);
2178 g_assert_not_reached();
2183 /* We have to dissect each packet if:
2185 we're printing information about each packet;
2187 we're using a read filter on the packets;
2189 we're using a display filter on the packets;
2191 we're using any taps that need dissection. */
2192 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2193 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2196 tshark_debug("tshark: Opening capture file: %s", cf_name);
2198 * We're reading a capture file.
2200 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2205 /* Process the packets in the file */
2206 tshark_debug("tshark: invoking load_cap_file() to process the packets");
2209 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2210 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2211 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2213 err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2216 CATCH(OutOfMemoryError) {
2220 "Sorry, but TShark has to terminate now.\n"
2222 "More information and workarounds can be found at\n"
2223 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2228 /* We still dump out the results of taps, etc., as we might have
2229 read some packets; however, we exit with an error status. */
2233 tshark_debug("tshark: no capture file specified");
2234 /* No capture file specified, so we're supposed to do a live capture
2235 or get a list of link-layer types for a live capture device;
2236 do we have support for live captures? */
2238 /* if no interface was specified, pick a default */
2239 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2240 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2241 if (exit_status != 0)
2244 /* if requested, list the link layer types and exit */
2245 if (list_link_layer_types) {
2248 /* Get the list of link-layer types for the capture devices. */
2249 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2250 interface_options interface_opts;
2251 if_capabilities_t *caps;
2252 char *auth_str = NULL;
2254 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2255 #ifdef HAVE_PCAP_REMOTE
2256 if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
2257 auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
2260 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
2263 cmdarg_err("%s", err_str);
2267 if (caps->data_link_types == NULL) {
2268 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2271 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2272 free_if_capabilities(caps);
2278 * If the standard error isn't a terminal, don't print packet counts,
2279 * as they won't show up on the user's terminal and they'll get in
2280 * the way of error messages in the file (to which we assume the
2281 * standard error was redirected; if it's redirected to the null
2282 * device, there's no point in printing packet counts anyway).
2284 * Otherwise, if we're printing packet information and the standard
2285 * output is a terminal (which we assume means the standard output and
2286 * error are going to the same terminal), don't print packet counts,
2287 * as they'll get in the way of the packet information.
2289 * Otherwise, if the user specified -q, don't print packet counts.
2291 * Otherwise, print packet counts.
2293 * XXX - what if the user wants to do a live capture, doesn't want
2294 * to save it to a file, doesn't want information printed for each
2295 * packet, does want some "-z" statistic, and wants packet counts
2296 * so they know whether they're seeing any packets? -q will
2297 * suppress the information printed for each packet, but it'll
2298 * also suppress the packet counts.
2300 if (!isatty(fileno(stderr)))
2301 print_packet_counts = FALSE;
2302 else if (print_packet_info && isatty(fileno(stdout)))
2303 print_packet_counts = FALSE;
2305 print_packet_counts = FALSE;
2307 print_packet_counts = TRUE;
2309 if (print_packet_info) {
2310 if (!write_preamble(&cfile)) {
2311 show_print_file_io_error(errno);
2316 tshark_debug("tshark: performing live capture");
2318 * XXX - this returns FALSE if an error occurred, but it also
2319 * returns FALSE if the capture stops because a time limit
2320 * was reached (and possibly other limits), so we can't assume
2321 * it means an error.
2323 * The capture code is a bit twisty, so it doesn't appear to
2324 * be an easy fix. We just ignore the return value for now.
2325 * Instead, pass on the exit status from the capture child.
2328 exit_status = global_capture_session.fork_child_status;
2330 if (print_packet_info) {
2331 if (!write_finale()) {
2333 show_print_file_io_error(err);
2337 /* No - complain. */
2338 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2345 if (cfile.frames != NULL) {
2346 free_frame_data_sequence(cfile.frames);
2347 cfile.frames = NULL;
2350 draw_tap_listeners(TRUE);
2351 funnel_dump_all_text_windows();
2352 epan_free(cfile.epan);
2355 output_fields_free(output_fields);
2356 output_fields = NULL;
2361 /*#define USE_BROKEN_G_MAIN_LOOP*/
2363 #ifdef USE_BROKEN_G_MAIN_LOOP
2366 gboolean loop_running = FALSE;
2368 guint32 packet_count = 0;
2371 typedef struct pipe_input_tag {
2374 ws_process_id *child_process;
2375 pipe_input_cb_t input_cb;
2376 guint pipe_input_id;
2378 GMutex *callback_running;
2382 static pipe_input_t pipe_input;
2385 /* The timer has expired, see if there's stuff to read from the pipe,
2386 if so, do the callback */
2388 pipe_timer_cb(gpointer data)
2394 pipe_input_t *pipe_input_p = data;
2395 gint iterations = 0;
2397 g_mutex_lock (pipe_input_p->callback_running);
2399 /* try to read data from the pipe only 5 times, to avoid blocking */
2400 while(iterations < 5) {
2401 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2403 /* Oddly enough although Named pipes don't work on win9x,
2404 PeekNamedPipe does !!! */
2405 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2406 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2408 /* Get the child process exit status */
2409 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2412 /* If the Peek returned an error, or there are bytes to be read
2413 or the childwatcher thread has terminated then call the normal
2415 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2417 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2419 /* And call the real handler */
2420 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2421 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2422 /* pipe closed, return false so that the timer is stopped */
2423 g_mutex_unlock (pipe_input_p->callback_running);
2428 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2429 /* No data, stop now */
2436 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2438 g_mutex_unlock (pipe_input_p->callback_running);
2440 /* we didn't stopped the timer, so let it run */
2447 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2450 pipe_input.source = source;
2451 pipe_input.child_process = child_process;
2452 pipe_input.user_data = user_data;
2453 pipe_input.input_cb = input_cb;
2456 #if GLIB_CHECK_VERSION(2,31,0)
2457 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2458 g_mutex_init(pipe_input.callback_running);
2460 pipe_input.callback_running = g_mutex_new();
2462 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2463 do this but that doesn't cover all win32 platforms. GTK can do
2464 this but doesn't seem to work over processes. Attempt to do
2465 something similar here, start a timer and check for data on every
2467 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2468 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2472 static const nstime_t *
2473 tshark_get_frame_ts(void *data, guint32 frame_num)
2475 capture_file *cf = (capture_file *) data;
2477 if (ref && ref->num == frame_num)
2478 return &ref->abs_ts;
2480 if (prev_dis && prev_dis->num == frame_num)
2481 return &prev_dis->abs_ts;
2483 if (prev_cap && prev_cap->num == frame_num)
2484 return &prev_cap->abs_ts;
2487 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2489 return (fd) ? &fd->abs_ts : NULL;
2496 tshark_epan_new(capture_file *cf)
2498 epan_t *epan = epan_new();
2501 epan->get_frame_ts = tshark_get_frame_ts;
2502 epan->get_interface_name = cap_file_get_interface_name;
2503 epan->get_user_comment = NULL;
2515 #ifdef USE_TSHARK_SELECT
2519 struct sigaction action, oldaction;
2522 /* Create new dissection section. */
2523 epan_free(cfile.epan);
2524 cfile.epan = tshark_epan_new(&cfile);
2527 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2528 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2530 /* Catch SIGINT and SIGTERM and, if we get either of them,
2531 clean up and exit. If SIGHUP isn't being ignored, catch
2532 it too and, if we get it, clean up and exit.
2534 We restart any read that was in progress, so that it doesn't
2535 disrupt reading from the sync pipe. The signal handler tells
2536 the capture child to finish; it will report that it finished,
2537 or will exit abnormally, so we'll stop reading from the sync
2538 pipe, pick up the exit status, and quit. */
2539 memset(&action, 0, sizeof(action));
2540 action.sa_handler = capture_cleanup;
2541 action.sa_flags = SA_RESTART;
2542 sigemptyset(&action.sa_mask);
2543 sigaction(SIGTERM, &action, NULL);
2544 sigaction(SIGINT, &action, NULL);
2545 sigaction(SIGHUP, NULL, &oldaction);
2546 if (oldaction.sa_handler == SIG_DFL)
2547 sigaction(SIGHUP, &action, NULL);
2550 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2551 quiet mode, report the number of packets we've captured.
2553 Again, restart any read that was in progress, so that it doesn't
2554 disrupt reading from the sync pipe. */
2555 action.sa_handler = report_counts_siginfo;
2556 action.sa_flags = SA_RESTART;
2557 sigemptyset(&action.sa_mask);
2558 sigaction(SIGINFO, &action, NULL);
2559 #endif /* SIGINFO */
2562 global_capture_session.state = CAPTURE_PREPARING;
2564 /* Let the user know which interfaces were chosen. */
2565 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2566 interface_options interface_opts;
2568 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2569 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2570 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2571 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2573 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2574 if (really_quiet == FALSE)
2575 fprintf(stderr, "Capturing on %s\n", str->str);
2577 g_string_free(str, TRUE);
2579 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2584 /* the actual capture loop
2586 * XXX - glib doesn't seem to provide any event based loop handling.
2588 * XXX - for whatever reason,
2589 * calling g_main_loop_new() ends up in 100% cpu load.
2591 * But that doesn't matter: in UNIX we can use select() to find an input
2592 * source with something to do.
2594 * But that doesn't matter because we're in a CLI (that doesn't need to
2595 * update a GUI or something at the same time) so it's OK if we block
2596 * trying to read from the pipe.
2598 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2599 * wrong (but I leave it there in case I am...).
2602 #ifdef USE_TSHARK_SELECT
2604 FD_SET(pipe_input.source, &readfds);
2607 loop_running = TRUE;
2611 while (loop_running)
2613 #ifdef USE_TSHARK_SELECT
2614 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2618 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2620 } else if (ret == 1) {
2622 /* Call the real handler */
2623 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2624 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2627 #ifdef USE_TSHARK_SELECT
2632 CATCH(OutOfMemoryError) {
2636 "Sorry, but TShark has to terminate now.\n"
2638 "More information and workarounds can be found at\n"
2639 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2646 /* capture child detected an error */
2648 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2650 cmdarg_err("%s", error_msg);
2651 cmdarg_err_cont("%s", secondary_error_msg);
2655 /* capture child detected an capture filter related error */
2657 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2659 capture_options *capture_opts = cap_session->capture_opts;
2660 dfilter_t *rfcode = NULL;
2661 interface_options interface_opts;
2663 g_assert(i < capture_opts->ifaces->len);
2664 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2666 if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
2668 "Invalid capture filter \"%s\" for interface '%s'.\n"
2670 "That string looks like a valid display filter; however, it isn't a valid\n"
2671 "capture filter (%s).\n"
2673 "Note that display filters and capture filters don't have the same syntax,\n"
2674 "so you can't use most display filter expressions as capture filters.\n"
2676 "See the User's Guide for a description of the capture filter syntax.",
2677 interface_opts.cfilter, interface_opts.descr, error_message);
2678 dfilter_free(rfcode);
2681 "Invalid capture filter \"%s\" for interface '%s'.\n"
2683 "That string isn't a valid capture filter (%s).\n"
2684 "See the User's Guide for a description of the capture filter syntax.",
2685 interface_opts.cfilter, interface_opts.descr, error_message);
2690 /* capture child tells us we have a new (or the first) capture file */
2692 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2694 capture_options *capture_opts = cap_session->capture_opts;
2695 capture_file *cf = (capture_file *) cap_session->cf;
2696 gboolean is_tempfile;
2699 if (cap_session->state == CAPTURE_PREPARING) {
2700 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2702 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2704 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2706 /* free the old filename */
2707 if (capture_opts->save_file != NULL) {
2709 /* we start a new capture file, close the old one (if we had one before) */
2710 if (cf->state != FILE_CLOSED) {
2711 if (cf->wth != NULL) {
2712 wtap_close(cf->wth);
2715 cf->state = FILE_CLOSED;
2718 g_free(capture_opts->save_file);
2719 is_tempfile = FALSE;
2721 epan_free(cf->epan);
2722 cf->epan = tshark_epan_new(cf);
2724 /* we didn't had a save_file before, must be a tempfile */
2728 /* save the new filename */
2729 capture_opts->save_file = g_strdup(new_file);
2731 /* if we are in real-time mode, open the new file now */
2732 if (do_dissection) {
2733 /* this is probably unecessary, but better safe than sorry */
2734 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2735 /* Attempt to open the capture file and set up to read from it. */
2736 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2740 /* Don't unlink (delete) the save file - leave it around,
2741 for debugging purposes. */
2742 g_free(capture_opts->save_file);
2743 capture_opts->save_file = NULL;
2748 cap_session->state = CAPTURE_RUNNING;
2754 /* capture child tells us we have new packets to read */
2756 capture_input_new_packets(capture_session *cap_session, int to_read)
2762 capture_file *cf = (capture_file *)cap_session->cf;
2763 gboolean filtering_tap_listeners;
2768 * Prevent a SIGINFO handler from writing to the standard error while
2769 * we're doing so or writing to the standard output; instead, have it
2770 * just set a flag telling us to print that information when we're done.
2773 #endif /* SIGINFO */
2775 /* Do we have any tap listeners with filters? */
2776 filtering_tap_listeners = have_filtering_tap_listeners();
2778 /* Get the union of the flags for all tap listeners. */
2779 tap_flags = union_of_tap_listener_flags();
2781 if (do_dissection) {
2782 gboolean create_proto_tree;
2783 epan_dissect_t *edt;
2785 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2786 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2787 create_proto_tree = TRUE;
2789 create_proto_tree = FALSE;
2791 /* The protocol tree will be "visible", i.e., printed, only if we're
2792 printing packet details, which is true if we're printing stuff
2793 ("print_packet_info" is true) and we're in verbose mode
2794 ("packet_details" is true). */
2795 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2797 while (to_read-- && cf->wth) {
2798 wtap_cleareof(cf->wth);
2799 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2801 /* read from file failed, tell the capture child to stop */
2802 sync_pipe_stop(cap_session);
2803 wtap_close(cf->wth);
2806 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2807 wtap_buf_ptr(cf->wth),
2811 /* packet successfully read and gone through the "Read Filter" */
2816 epan_dissect_free(edt);
2820 * Dumpcap's doing all the work; we're not doing any dissection.
2821 * Count all the packets it wrote.
2823 packet_count += to_read;
2826 if (print_packet_counts) {
2827 /* We're printing packet counts. */
2828 if (packet_count != 0) {
2829 fprintf(stderr, "\r%u ", packet_count);
2830 /* stderr could be line buffered */
2837 * Allow SIGINFO handlers to write.
2842 * If a SIGINFO handler asked us to write out capture counts, do so.
2846 #endif /* SIGINFO */
2852 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2853 /* Report the count only if we aren't printing a packet count
2854 as packets arrive. */
2855 fprintf(stderr, "%u packet%s captured\n", packet_count,
2856 plurality(packet_count, "", "s"));
2859 infoprint = FALSE; /* we just reported it */
2860 #endif /* SIGINFO */
2865 report_counts_siginfo(int signum _U_)
2867 int sav_errno = errno;
2868 /* If we've been told to delay printing, just set a flag asking
2869 that we print counts (if we're supposed to), otherwise print
2870 the count of packets captured (if we're supposed to). */
2877 #endif /* SIGINFO */
2880 /* capture child detected any packet drops? */
2882 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2884 if (print_packet_counts) {
2885 /* We're printing packet counts to stderr.
2886 Send a newline so that we move to the line after the packet count. */
2887 fprintf(stderr, "\n");
2891 /* We're printing packet counts to stderr.
2892 Send a newline so that we move to the line after the packet count. */
2893 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2899 * Capture child closed its side of the pipe, report any error and
2900 * do the required cleanup.
2903 capture_input_closed(capture_session *cap_session, gchar *msg)
2905 capture_file *cf = (capture_file *) cap_session->cf;
2908 fprintf(stderr, "tshark: %s\n", msg);
2912 if (cf != NULL && cf->wth != NULL) {
2913 wtap_close(cf->wth);
2914 if (cf->is_tempfile) {
2915 ws_unlink(cf->filename);
2918 #ifdef USE_BROKEN_G_MAIN_LOOP
2919 /*g_main_loop_quit(loop);*/
2920 g_main_loop_quit(loop);
2922 loop_running = FALSE;
2931 capture_cleanup(DWORD ctrltype _U_)
2933 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2934 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2935 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2936 like SIGTERM at least when the machine's shutting down.
2938 For now, we handle them all as indications that we should clean up
2939 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2942 We must return TRUE so that no other handler - such as one that would
2943 terminate the process - gets called.
2945 XXX - for some reason, typing ^C to TShark, if you run this in
2946 a Cygwin console window in at least some versions of Cygwin,
2947 causes TShark to terminate immediately; this routine gets
2948 called, but the main loop doesn't get a chance to run and
2949 exit cleanly, at least if this is compiled with Microsoft Visual
2950 C++ (i.e., it's a property of the Cygwin console window or Bash;
2951 it happens if TShark is not built with Cygwin - for all I know,
2952 building it with Cygwin may make the problem go away). */
2954 /* tell the capture child to stop */
2955 sync_pipe_stop(&global_capture_session);
2957 /* don't stop our own loop already here, otherwise status messages and
2958 * cleanup wouldn't be done properly. The child will indicate the stop of
2959 * everything by calling capture_input_closed() later */
2965 capture_cleanup(int signum _U_)
2967 /* tell the capture child to stop */
2968 sync_pipe_stop(&global_capture_session);
2970 /* don't stop our own loop already here, otherwise status messages and
2971 * cleanup wouldn't be done properly. The child will indicate the stop of
2972 * everything by calling capture_input_closed() later */
2975 #endif /* HAVE_LIBPCAP */
2978 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2979 gint64 offset, struct wtap_pkthdr *whdr,
2986 /* The frame number of this packet is one more than the count of
2987 frames in this packet. */
2988 framenum = cf->count + 1;
2990 /* If we're not running a display filter and we're not printing any
2991 packet information, we don't need to do a dissection. This means
2992 that all packets can be marked as 'passed'. */
2995 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2997 /* If we're going to print packet information, or we're going to
2998 run a read filter, or display filter, or we're going to process taps, set up to
2999 do a dissection and do so. */
3001 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3002 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3003 /* Grab any resolved addresses */
3004 host_name_lookup_process();
3006 /* If we're running a read filter, prime the epan_dissect_t with that
3009 epan_dissect_prime_dfilter(edt, cf->rfcode);
3012 epan_dissect_prime_dfilter(edt, cf->dfcode);
3014 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
3016 if (ref == &fdlocal) {
3017 ref_frame = fdlocal;
3021 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
3023 /* Run the read filter if we have one. */
3025 passed = dfilter_apply_edt(cf->rfcode, edt);
3029 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
3030 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
3032 /* If we're not doing dissection then there won't be any dependent frames.
3033 * More importantly, edt.pi.dependent_frames won't be initialized because
3034 * epan hasn't been initialized.
3035 * if we *are* doing dissection, then mark the dependent frames, but only
3036 * if a display filter was given and it matches this packet.
3038 if (edt && cf->dfcode) {
3039 if (dfilter_apply_edt(cf->dfcode, edt)) {
3040 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
3046 /* if we don't add it to the frame_data_sequence, clean it up right now
3048 frame_data_destroy(&fdlocal);
3052 epan_dissect_reset(edt);
3058 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
3059 struct wtap_pkthdr *phdr, Buffer *buf,
3065 /* If we're not running a display filter and we're not printing any
3066 packet information, we don't need to do a dissection. This means
3067 that all packets can be marked as 'passed'. */
3070 /* If we're going to print packet information, or we're going to
3071 run a read filter, or we're going to process taps, set up to
3072 do a dissection and do so. */
3074 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3075 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3076 /* Grab any resolved addresses */
3077 host_name_lookup_process();
3079 /* If we're running a display filter, prime the epan_dissect_t with that
3082 epan_dissect_prime_dfilter(edt, cf->dfcode);
3084 col_custom_prime_edt(edt, &cf->cinfo);
3086 /* We only need the columns if either
3087 1) some tap needs the columns
3089 2) we're printing packet info but we're *not* verbose; in verbose
3090 mode, we print the protocol tree, not the protocol summary.
3092 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3097 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3104 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
3106 /* Run the read/display filter if we have one. */
3108 passed = dfilter_apply_edt(cf->dfcode, edt);
3112 frame_data_set_after_dissect(fdata, &cum_bytes);
3113 /* Process this packet. */
3114 if (print_packet_info) {
3115 /* We're printing packet information; print the information for
3117 print_packet(cf, edt);
3119 /* The ANSI C standard does not appear to *require* that a line-buffered
3120 stream be flushed to the host environment whenever a newline is
3121 written, it just says that, on such a stream, characters "are
3122 intended to be transmitted to or from the host environment as a
3123 block when a new-line character is encountered".
3125 The Visual C++ 6.0 C implementation doesn't do what is intended;
3126 even if you set a stream to be line-buffered, it still doesn't
3127 flush the buffer at the end of every line.
3129 So, if the "-l" flag was specified, we flush the standard output
3130 at the end of a packet. This will do the right thing if we're
3131 printing packet summary lines, and, as we print the entire protocol
3132 tree for a single packet without waiting for anything to happen,
3133 it should be as good as line-buffered mode if we're printing
3134 protocol trees. (The whole reason for the "-l" flag in either
3135 tcpdump or TShark is to allow the output of a live capture to
3136 be piped to a program or script and to have that script see the
3137 information for the packet as soon as it's printed, rather than
3138 having to wait until a standard I/O buffer fills up. */
3142 if (ferror(stdout)) {
3143 show_print_file_io_error(errno);
3152 epan_dissect_reset(edt);
3154 return passed || fdata->flags.dependent_of_displayed;
3158 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3159 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3162 int snapshot_length;
3166 gchar *err_info = NULL;
3168 char *save_file_string = NULL;
3169 gboolean filtering_tap_listeners;
3171 wtapng_section_t *shb_hdr = NULL;
3172 wtapng_iface_descriptions_t *idb_inf = NULL;
3173 wtapng_name_res_t *nrb_hdr = NULL;
3174 struct wtap_pkthdr phdr;
3176 epan_dissect_t *edt = NULL;
3178 wtap_phdr_init(&phdr);
3180 idb_inf = wtap_file_get_idb_info(cf->wth);
3181 #ifdef PCAP_NG_DEFAULT
3182 if (idb_inf->interface_data->len > 1) {
3183 linktype = WTAP_ENCAP_PER_PACKET;
3185 linktype = wtap_file_encap(cf->wth);
3188 linktype = wtap_file_encap(cf->wth);
3190 if (save_file != NULL) {
3191 /* Get a string that describes what we're writing to */
3192 save_file_string = output_file_description(save_file);
3194 /* Set up to write to the capture file. */
3195 snapshot_length = wtap_snapshot_length(cf->wth);
3196 if (snapshot_length == 0) {
3197 /* Snapshot length of input file not known. */
3198 snapshot_length = WTAP_MAX_PACKET_SIZE;
3200 tshark_debug("tshark: snapshot_length = %d", snapshot_length);
3202 shb_hdr = wtap_file_get_shb_for_new_file(cf->wth);
3203 nrb_hdr = wtap_file_get_nrb_for_new_file(cf->wth);
3205 /* If we don't have an application name add Tshark */
3206 if (shb_hdr->shb_user_appl == NULL) {
3207 /* this is free'd by wtap_free_shb() later */
3208 shb_hdr->shb_user_appl = g_strdup_printf("TShark (Wireshark) %s", get_ws_vcs_version_info());
3211 if (linktype != WTAP_ENCAP_PER_PACKET &&
3212 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3213 tshark_debug("tshark: writing PCAP format to %s", save_file);
3214 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3215 snapshot_length, FALSE /* compressed */, &err);
3218 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3219 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3220 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
3227 /* We couldn't set up to write to the capture file. */
3230 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
3231 cmdarg_err("Capture files can't be written in that format.");
3234 case WTAP_ERR_UNWRITABLE_ENCAP:
3235 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3236 cmdarg_err("The capture file being read can't be written as a "
3237 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3240 case WTAP_ERR_CANT_OPEN:
3241 cmdarg_err("The %s couldn't be created for some "
3242 "unknown reason.", save_file_string);
3245 case WTAP_ERR_SHORT_WRITE:
3246 cmdarg_err("A full header couldn't be written to the %s.",
3251 cmdarg_err("The %s could not be created: %s.", save_file_string,
3252 wtap_strerror(err));
3258 if (print_packet_info) {
3259 if (!write_preamble(cf)) {
3261 show_print_file_io_error(err);
3270 /* Do we have any tap listeners with filters? */
3271 filtering_tap_listeners = have_filtering_tap_listeners();
3273 /* Get the union of the flags for all tap listeners. */
3274 tap_flags = union_of_tap_listener_flags();
3276 if (perform_two_pass_analysis) {
3279 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3281 /* Allocate a frame_data_sequence for all the frames. */
3282 cf->frames = new_frame_data_sequence();
3284 if (do_dissection) {
3285 gboolean create_proto_tree = FALSE;
3287 /* If we're going to be applying a filter, we'll need to
3288 create a protocol tree against which to apply the filter. */
3289 if (cf->rfcode || cf->dfcode)
3290 create_proto_tree = TRUE;
3292 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3294 /* We're not going to display the protocol tree on this pass,
3295 so it's not going to be "visible". */
3296 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3299 tshark_debug("tshark: reading records for first pass");
3300 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3301 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3302 wtap_buf_ptr(cf->wth))) {
3303 /* Stop reading if we have the maximum number of packets;
3304 * When the -c option has not been used, max_packet_count
3305 * starts at 0, which practically means, never stop reading.
3306 * (unless we roll over max_packet_count ?)
3308 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3309 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3310 max_packet_count, data_offset, max_byte_count);
3311 err = 0; /* This is not an error */
3318 epan_dissect_free(edt);
3322 /* Close the sequential I/O side, to free up memory it requires. */
3323 wtap_sequential_close(cf->wth);
3325 /* Allow the protocol dissectors to free up memory that they
3326 * don't need after the sequential run-through of the packets. */
3327 postseq_cleanup_all_protocols();
3331 ws_buffer_init(&buf, 1500);
3333 tshark_debug("tshark: done with first pass");
3335 if (do_dissection) {
3336 gboolean create_proto_tree;
3338 if (cf->dfcode || print_details || filtering_tap_listeners ||
3339 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3340 create_proto_tree = TRUE;
3342 create_proto_tree = FALSE;
3344 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3346 /* The protocol tree will be "visible", i.e., printed, only if we're
3347 printing packet details, which is true if we're printing stuff
3348 ("print_packet_info" is true) and we're in verbose mode
3349 ("packet_details" is true). */
3350 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3353 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3354 fdata = frame_data_sequence_find(cf->frames, framenum);
3355 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3357 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3358 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3360 /* Either there's no read filtering or this packet passed the
3361 filter, so, if we're writing to a capture file, write
3364 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3365 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3366 /* Error writing to a capture file */
3367 tshark_debug("tshark: error writing to a capture file (%d)", err);
3370 case WTAP_ERR_UNWRITABLE_ENCAP:
3372 * This is a problem with the particular frame we're writing
3373 * and the file type and subtype we're writing; note that,
3374 * and report the frame number and file type/subtype.
3376 * XXX - framenum is not necessarily the frame number in
3377 * the input file if there was a read filter.
3380 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3381 framenum, cf->filename,
3382 wtap_file_type_subtype_short_string(out_file_type));
3385 case WTAP_ERR_PACKET_TOO_LARGE:
3387 * This is a problem with the particular frame we're writing
3388 * and the file type and subtype we're writing; note that,
3389 * and report the frame number and file type/subtype.
3391 * XXX - framenum is not necessarily the frame number in
3392 * the input file if there was a read filter.
3395 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3396 framenum, cf->filename,
3397 wtap_file_type_subtype_short_string(out_file_type));
3400 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3402 * This is a problem with the particular record we're writing
3403 * and the file type and subtype we're writing; note that,
3404 * and report the record number and file type/subtype.
3406 * XXX - framenum is not necessarily the record number in
3407 * the input file if there was a read filter.
3410 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3411 framenum, cf->filename,
3412 wtap_file_type_subtype_short_string(out_file_type));
3415 case WTAP_ERR_UNWRITABLE_REC_DATA:
3417 * This is a problem with the particular record we're writing
3418 * and the file type and subtype we're writing; note that,
3419 * and report the record number and file type/subtype.
3421 * XXX - framenum is not necessarily the record number in
3422 * the input file if there was a read filter.
3425 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3426 framenum, cf->filename,
3427 wtap_file_type_subtype_short_string(out_file_type),
3428 err_info != NULL ? err_info : "no information supplied");
3433 show_capture_file_io_error(save_file, err, FALSE);
3436 wtap_dump_close(pdh, &err);
3437 wtap_free_shb(shb_hdr);
3438 wtap_free_nrb(nrb_hdr);
3447 epan_dissect_free(edt);
3451 ws_buffer_free(&buf);
3453 tshark_debug("tshark: done with second pass");
3456 /* !perform_two_pass_analysis */
3459 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3461 if (do_dissection) {
3462 gboolean create_proto_tree;
3464 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3465 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3466 create_proto_tree = TRUE;
3468 create_proto_tree = FALSE;
3470 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3472 /* The protocol tree will be "visible", i.e., printed, only if we're
3473 printing packet details, which is true if we're printing stuff
3474 ("print_packet_info" is true) and we're in verbose mode
3475 ("packet_details" is true). */
3476 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3479 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3482 tshark_debug("tshark: processing packet #%d", framenum);
3484 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3485 wtap_buf_ptr(cf->wth),
3487 /* Either there's no read filtering or this packet passed the
3488 filter, so, if we're writing to a capture file, write
3491 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3492 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3493 /* Error writing to a capture file */
3494 tshark_debug("tshark: error writing to a capture file (%d)", err);
3497 case WTAP_ERR_UNWRITABLE_ENCAP:
3499 * This is a problem with the particular frame we're writing
3500 * and the file type and subtype we're writing; note that,
3501 * and report the frame number and file type/subtype.
3504 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3505 framenum, cf->filename,
3506 wtap_file_type_subtype_short_string(out_file_type));
3509 case WTAP_ERR_PACKET_TOO_LARGE:
3511 * This is a problem with the particular frame we're writing
3512 * and the file type and subtype we're writing; note that,
3513 * and report the frame number and file type/subtype.
3516 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3517 framenum, cf->filename,
3518 wtap_file_type_subtype_short_string(out_file_type));
3521 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3523 * This is a problem with the particular record we're writing
3524 * and the file type and subtype we're writing; note that,
3525 * and report the record number and file type/subtype.
3528 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3529 framenum, cf->filename,
3530 wtap_file_type_subtype_short_string(out_file_type));
3533 case WTAP_ERR_UNWRITABLE_REC_DATA:
3535 * This is a problem with the particular record we're writing
3536 * and the file type and subtype we're writing; note that,
3537 * and report the record number and file type/subtype.
3540 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3541 framenum, cf->filename,
3542 wtap_file_type_subtype_short_string(out_file_type),
3543 err_info != NULL ? err_info : "no information supplied");
3548 show_capture_file_io_error(save_file, err, FALSE);
3551 wtap_dump_close(pdh, &err);
3552 wtap_free_shb(shb_hdr);
3553 wtap_free_nrb(nrb_hdr);
3558 /* Stop reading if we have the maximum number of packets;
3559 * When the -c option has not been used, max_packet_count
3560 * starts at 0, which practically means, never stop reading.
3561 * (unless we roll over max_packet_count ?)
3563 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3564 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3565 max_packet_count, data_offset, max_byte_count);
3566 err = 0; /* This is not an error */
3572 epan_dissect_free(edt);
3577 wtap_phdr_cleanup(&phdr);
3580 tshark_debug("tshark: something failed along the line (%d)", err);
3582 * Print a message noting that the read failed somewhere along the line.
3584 * If we're printing packet data, and the standard output and error are
3585 * going to the same place, flush the standard output, so everything
3586 * buffered up is written, and then print a newline to the standard error
3587 * before printing the error message, to separate it from the packet
3588 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3589 * the _fstat() documentation at Microsoft doesn't indicate whether
3590 * st_ino is even supported.)
3593 if (print_packet_info) {
3594 ws_statb64 stat_stdout, stat_stderr;
3596 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3597 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3598 stat_stdout.st_ino == stat_stderr.st_ino) {
3600 fprintf(stderr, "\n");
3607 case WTAP_ERR_UNSUPPORTED:
3608 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3610 err_info != NULL ? err_info : "no information supplied");
3614 case WTAP_ERR_SHORT_READ:
3615 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3619 case WTAP_ERR_BAD_FILE:
3620 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3622 err_info != NULL ? err_info : "no information supplied");
3626 case WTAP_ERR_DECOMPRESS:
3627 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3628 "(%s)", cf->filename,
3629 err_info != NULL ? err_info : "no information supplied");
3634 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3635 cf->filename, wtap_strerror(err));
3638 if (save_file != NULL) {
3639 /* Now close the capture file. */
3640 if (!wtap_dump_close(pdh, &err))
3641 show_capture_file_io_error(save_file, err, TRUE);
3644 if (save_file != NULL) {
3645 if (pdh && out_file_name_res) {
3646 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3647 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3648 wtap_file_type_subtype_short_string(out_file_type));
3651 /* Now close the capture file. */
3652 if (!wtap_dump_close(pdh, &err))
3653 show_capture_file_io_error(save_file, err, TRUE);
3655 if (print_packet_info) {
3656 if (!write_finale()) {
3658 show_print_file_io_error(err);
3665 wtap_close(cf->wth);
3668 g_free(save_file_string);
3669 wtap_free_shb(shb_hdr);
3670 wtap_free_nrb(nrb_hdr);
3676 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3677 const guchar *pd, guint tap_flags)
3683 /* Count this packet. */
3686 /* If we're not running a display filter and we're not printing any
3687 packet information, we don't need to do a dissection. This means
3688 that all packets can be marked as 'passed'. */
3691 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3693 /* If we're going to print packet information, or we're going to
3694 run a read filter, or we're going to process taps, set up to
3695 do a dissection and do so. */
3697 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3698 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3699 /* Grab any resolved addresses */
3700 host_name_lookup_process();
3702 /* If we're running a filter, prime the epan_dissect_t with that
3705 epan_dissect_prime_dfilter(edt, cf->dfcode);
3707 col_custom_prime_edt(edt, &cf->cinfo);
3709 /* We only need the columns if either
3710 1) some tap needs the columns
3712 2) we're printing packet info but we're *not* verbose; in verbose
3713 mode, we print the protocol tree, not the protocol summary.
3715 3) there is a column mapped as an individual field */
3716 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3721 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3723 if (ref == &fdata) {
3728 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3730 /* Run the filter if we have it. */
3732 passed = dfilter_apply_edt(cf->dfcode, edt);
3736 frame_data_set_after_dissect(&fdata, &cum_bytes);
3738 /* Process this packet. */
3739 if (print_packet_info) {
3740 /* We're printing packet information; print the information for
3742 print_packet(cf, edt);
3744 /* The ANSI C standard does not appear to *require* that a line-buffered
3745 stream be flushed to the host environment whenever a newline is
3746 written, it just says that, on such a stream, characters "are
3747 intended to be transmitted to or from the host environment as a
3748 block when a new-line character is encountered".
3750 The Visual C++ 6.0 C implementation doesn't do what is intended;
3751 even if you set a stream to be line-buffered, it still doesn't
3752 flush the buffer at the end of every line.
3754 So, if the "-l" flag was specified, we flush the standard output
3755 at the end of a packet. This will do the right thing if we're
3756 printing packet summary lines, and, as we print the entire protocol
3757 tree for a single packet without waiting for anything to happen,
3758 it should be as good as line-buffered mode if we're printing
3759 protocol trees. (The whole reason for the "-l" flag in either
3760 tcpdump or TShark is to allow the output of a live capture to
3761 be piped to a program or script and to have that script see the
3762 information for the packet as soon as it's printed, rather than
3763 having to wait until a standard I/O buffer fills up. */
3767 if (ferror(stdout)) {
3768 show_print_file_io_error(errno);
3773 /* this must be set after print_packet() [bug #8160] */
3774 prev_dis_frame = fdata;
3775 prev_dis = &prev_dis_frame;
3778 prev_cap_frame = fdata;
3779 prev_cap = &prev_cap_frame;
3782 epan_dissect_reset(edt);
3783 frame_data_destroy(&fdata);
3789 write_preamble(capture_file *cf)
3791 switch (output_action) {
3794 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3798 write_pdml_preamble(stdout, cf->filename);
3800 write_psml_preamble(&cf->cinfo, stdout);
3801 return !ferror(stdout);
3804 write_fields_preamble(output_fields, stdout);
3805 return !ferror(stdout);
3808 g_assert_not_reached();
3814 get_line_buf(size_t len)
3816 static char *line_bufp = NULL;
3817 static size_t line_buf_len = 256;
3818 size_t new_line_buf_len;
3820 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3821 new_line_buf_len *= 2)
3823 if (line_bufp == NULL) {
3824 line_buf_len = new_line_buf_len;
3825 line_bufp = (char *)g_malloc(line_buf_len + 1);
3827 if (new_line_buf_len > line_buf_len) {
3828 line_buf_len = new_line_buf_len;
3829 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3836 put_string(char *dest, const char *str, size_t str_len)
3838 memcpy(dest, str, str_len);
3839 dest[str_len] = '\0';
3843 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3847 for (i = str_len; i < str_with_spaces; i++)
3850 put_string(dest, str, str_len);
3854 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3858 memcpy(dest, str, str_len);
3859 for (i = str_len; i < str_with_spaces; i++)
3862 dest[str_with_spaces] = '\0';
3866 print_columns(capture_file *cf)
3873 col_item_t* col_item;
3875 line_bufp = get_line_buf(256);
3878 for (i = 0; i < cf->cinfo.num_cols; i++) {
3879 col_item = &cf->cinfo.columns[i];
3880 /* Skip columns not marked as visible. */
3881 if (!get_column_visible(i))
3883 switch (col_item->col_fmt) {
3885 column_len = col_len = strlen(col_item->col_data);
3888 line_bufp = get_line_buf(buf_offset + column_len);
3889 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3895 case COL_ABS_YMD_TIME: /* XXX - wider */
3896 case COL_ABS_YDOY_TIME: /* XXX - wider */
3898 case COL_UTC_YMD_TIME: /* XXX - wider */
3899 case COL_UTC_YDOY_TIME: /* XXX - wider */
3900 column_len = col_len = strlen(col_item->col_data);
3901 if (column_len < 10)
3903 line_bufp = get_line_buf(buf_offset + column_len);
3904 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3910 case COL_DEF_DL_SRC:
3911 case COL_RES_DL_SRC:
3912 case COL_UNRES_DL_SRC:
3913 case COL_DEF_NET_SRC:
3914 case COL_RES_NET_SRC:
3915 case COL_UNRES_NET_SRC:
3916 column_len = col_len = strlen(col_item->col_data);
3917 if (column_len < 12)
3919 line_bufp = get_line_buf(buf_offset + column_len);
3920 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3926 case COL_DEF_DL_DST:
3927 case COL_RES_DL_DST:
3928 case COL_UNRES_DL_DST:
3929 case COL_DEF_NET_DST:
3930 case COL_RES_NET_DST:
3931 case COL_UNRES_NET_DST:
3932 column_len = col_len = strlen(col_item->col_data);
3933 if (column_len < 12)
3935 line_bufp = get_line_buf(buf_offset + column_len);
3936 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3940 column_len = strlen(col_item->col_data);
3941 line_bufp = get_line_buf(buf_offset + column_len);
3942 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3945 buf_offset += column_len;
3946 if (i != cf->cinfo.num_cols - 1) {
3948 * This isn't the last column, so we need to print a
3949 * separator between this column and the next.
3951 * If we printed a network source and are printing a
3952 * network destination of the same type next, separate
3953 * them with " -> "; if we printed a network destination
3954 * and are printing a network source of the same type
3955 * next, separate them with " <- "; otherwise separate them
3958 * We add enough space to the buffer for " <- " or " -> ",
3959 * even if we're only adding " ".
3961 line_bufp = get_line_buf(buf_offset + 4);
3962 switch (col_item->col_fmt) {
3967 switch (cf->cinfo.columns[i+1].col_fmt) {
3972 put_string(line_bufp + buf_offset, " -> ", 4);
3977 put_string(line_bufp + buf_offset, " ", 1);
3983 case COL_DEF_DL_SRC:
3984 case COL_RES_DL_SRC:
3985 case COL_UNRES_DL_SRC:
3986 switch (cf->cinfo.columns[i+1].col_fmt) {
3988 case COL_DEF_DL_DST:
3989 case COL_RES_DL_DST:
3990 case COL_UNRES_DL_DST:
3991 put_string(line_bufp + buf_offset, " -> ", 4);
3996 put_string(line_bufp + buf_offset, " ", 1);
4002 case COL_DEF_NET_SRC:
4003 case COL_RES_NET_SRC:
4004 case COL_UNRES_NET_SRC:
4005 switch (cf->cinfo.columns[i+1].col_fmt) {
4007 case COL_DEF_NET_DST:
4008 case COL_RES_NET_DST:
4009 case COL_UNRES_NET_DST:
4010 put_string(line_bufp + buf_offset, " -> ", 4);
4015 put_string(line_bufp + buf_offset, " ", 1);
4024 switch (cf->cinfo.columns[i+1].col_fmt) {
4029 put_string(line_bufp + buf_offset, " <- ", 4);
4034 put_string(line_bufp + buf_offset, " ", 1);
4040 case COL_DEF_DL_DST:
4041 case COL_RES_DL_DST:
4042 case COL_UNRES_DL_DST:
4043 switch (cf->cinfo.columns[i+1].col_fmt) {
4045 case COL_DEF_DL_SRC:
4046 case COL_RES_DL_SRC:
4047 case COL_UNRES_DL_SRC:
4048 put_string(line_bufp + buf_offset, " <- ", 4);
4053 put_string(line_bufp + buf_offset, " ", 1);
4059 case COL_DEF_NET_DST:
4060 case COL_RES_NET_DST:
4061 case COL_UNRES_NET_DST:
4062 switch (cf->cinfo.columns[i+1].col_fmt) {
4064 case COL_DEF_NET_SRC:
4065 case COL_RES_NET_SRC:
4066 case COL_UNRES_NET_SRC:
4067 put_string(line_bufp + buf_offset, " <- ", 4);
4072 put_string(line_bufp + buf_offset, " ", 1);
4079 put_string(line_bufp + buf_offset, " ", 1);
4085 return print_line(print_stream, 0, line_bufp);
4089 print_packet(capture_file *cf, epan_dissect_t *edt)
4091 print_args_t print_args;
4093 if (print_summary || output_fields_has_cols(output_fields)) {
4094 /* Just fill in the columns. */
4095 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
4097 if (print_summary) {
4098 /* Now print them. */
4099 switch (output_action) {
4102 if (!print_columns(cf))
4107 write_psml_columns(edt, stdout);
4108 return !ferror(stdout);
4109 case WRITE_FIELDS: /*No non-verbose "fields" format */
4110 g_assert_not_reached();
4115 if (print_details) {
4116 /* Print the information in the protocol tree. */
4117 switch (output_action) {
4120 /* Only initialize the fields that are actually used in proto_tree_print.
4121 * This is particularly important for .range, as that's heap memory which
4122 * we would otherwise have to g_free().
4123 print_args.to_file = TRUE;
4124 print_args.format = print_format;
4125 print_args.print_summary = print_summary;
4126 print_args.print_formfeed = FALSE;
4127 packet_range_init(&print_args.range, &cfile);
4129 print_args.print_hex = print_hex;
4130 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
4132 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
4135 if (!print_line(print_stream, 0, separator))
4141 write_pdml_proto_tree(edt, stdout);
4143 return !ferror(stdout);
4145 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
4147 return !ferror(stdout);
4151 if (print_summary || print_details) {
4152 if (!print_line(print_stream, 0, ""))
4155 if (!print_hex_data(print_stream, edt))
4157 if (!print_line(print_stream, 0, separator))
4166 switch (output_action) {
4169 return print_finale(print_stream);
4173 write_pdml_finale(stdout);
4175 write_psml_finale(stdout);
4176 return !ferror(stdout);
4179 write_fields_finale(output_fields, stdout);
4180 return !ferror(stdout);
4183 g_assert_not_reached();
4189 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4193 char err_msg[2048+1];
4195 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4199 /* The open succeeded. Fill in the information for this file. */
4201 /* Create new epan session for dissection. */
4202 epan_free(cf->epan);
4203 cf->epan = tshark_epan_new(cf);
4206 cf->f_datalen = 0; /* not used, but set it anyway */
4208 /* Set the file name because we need it to set the follow stream filter.
4209 XXX - is that still true? We need it for other reasons, though,
4211 cf->filename = g_strdup(fname);
4213 /* Indicate whether it's a permanent or temporary file. */
4214 cf->is_tempfile = is_tempfile;
4216 /* No user changes yet. */
4217 cf->unsaved_changes = FALSE;
4219 cf->cd_t = wtap_file_type_subtype(cf->wth);
4220 cf->open_type = type;
4222 cf->drops_known = FALSE;
4224 cf->snap = wtap_snapshot_length(cf->wth);
4225 if (cf->snap == 0) {
4226 /* Snapshot length not known. */
4227 cf->has_snap = FALSE;
4228 cf->snap = WTAP_MAX_PACKET_SIZE;
4230 cf->has_snap = TRUE;
4231 nstime_set_zero(&cf->elapsed_time);
4236 cf->state = FILE_READ_IN_PROGRESS;
4238 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4239 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4244 g_snprintf(err_msg, sizeof err_msg,
4245 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4246 cmdarg_err("%s", err_msg);
4251 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4253 char *save_file_string;
4255 save_file_string = output_file_description(fname);
4260 cmdarg_err("Not all the packets could be written to the %s because there is "
4261 "no space left on the file system.",
4267 cmdarg_err("Not all the packets could be written to the %s because you are "
4268 "too close to, or over your disk quota.",
4273 case WTAP_ERR_CANT_CLOSE:
4274 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4278 case WTAP_ERR_SHORT_WRITE:
4279 cmdarg_err("Not all the packets could be written to the %s.",
4285 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4286 wtap_strerror(err));
4288 cmdarg_err("An error occurred while writing to the %s: %s.",
4289 save_file_string, wtap_strerror(err));
4293 g_free(save_file_string);
4297 show_print_file_io_error(int err)
4302 cmdarg_err("Not all the packets could be printed because there is "
4303 "no space left on the file system.");
4308 cmdarg_err("Not all the packets could be printed because you are "
4309 "too close to, or over your disk quota.");
4314 cmdarg_err("An error occurred while printing packets: %s.",
4321 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4325 static char errmsg_errno[1024+1];
4328 /* Wiretap error. */
4331 case WTAP_ERR_NOT_REGULAR_FILE:
4332 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4335 case WTAP_ERR_RANDOM_OPEN_PIPE:
4336 /* Seen only when opening a capture file for reading. */
4337 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4340 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4341 /* Seen only when opening a capture file for reading. */
4342 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4345 case WTAP_ERR_UNSUPPORTED:
4346 /* Seen only when opening a capture file for reading. */
4347 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4348 "The file \"%%s\" contains record data that TShark doesn't support.\n"
4350 err_info != NULL ? err_info : "no information supplied");
4352 errmsg = errmsg_errno;
4355 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4356 /* Seen only when opening a capture file for writing. */
4357 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4358 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4359 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4360 errmsg = errmsg_errno;
4363 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
4364 /* Seen only when opening a capture file for writing. */
4365 errmsg = "TShark doesn't support writing capture files in that format.";
4368 case WTAP_ERR_UNWRITABLE_ENCAP:
4369 /* Seen only when opening a capture file for writing. */
4370 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4371 "TShark can't save this capture as a \"%s\" file.",
4372 wtap_file_type_subtype_short_string(file_type));
4373 errmsg = errmsg_errno;
4376 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4378 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4379 "TShark can't save this capture as a \"%s\" file.",
4380 wtap_file_type_subtype_short_string(file_type));
4381 errmsg = errmsg_errno;
4383 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4386 case WTAP_ERR_BAD_FILE:
4387 /* Seen only when opening a capture file for reading. */
4388 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4389 "The file \"%%s\" appears to be damaged or corrupt.\n"
4391 err_info != NULL ? err_info : "no information supplied");
4393 errmsg = errmsg_errno;
4396 case WTAP_ERR_CANT_OPEN:
4398 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4400 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4403 case WTAP_ERR_SHORT_READ:
4404 errmsg = "The file \"%s\" appears to have been cut short"
4405 " in the middle of a packet or other data.";
4408 case WTAP_ERR_SHORT_WRITE:
4409 errmsg = "A full header couldn't be written to the file \"%s\".";
4412 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4413 errmsg = "This file type cannot be written as a compressed file.";
4416 case WTAP_ERR_DECOMPRESS:
4417 /* Seen only when opening a capture file for reading. */
4418 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4419 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4421 err_info != NULL ? err_info : "no information supplied");
4423 errmsg = errmsg_errno;
4427 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4428 "The file \"%%s\" could not be %s: %s.",
4429 for_writing ? "created" : "opened",
4430 wtap_strerror(err));
4431 errmsg = errmsg_errno;
4435 errmsg = file_open_error_message(err, for_writing);
4440 * Open/create errors are reported with an console message in TShark.
4443 open_failure_message(const char *filename, int err, gboolean for_writing)
4445 fprintf(stderr, "tshark: ");
4446 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4447 fprintf(stderr, "\n");
4451 * General errors are reported with an console message in TShark.
4454 failure_message(const char *msg_format, va_list ap)
4456 fprintf(stderr, "tshark: ");
4457 vfprintf(stderr, msg_format, ap);
4458 fprintf(stderr, "\n");
4462 * Read errors are reported with an console message in TShark.
4465 read_failure_message(const char *filename, int err)
4467 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4468 filename, g_strerror(err));
4472 * Write errors are reported with an console message in TShark.
4475 write_failure_message(const char *filename, int err)
4477 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4478 filename, g_strerror(err));
4482 * Report additional information for an error in command-line arguments.
4485 failure_message_cont(const char *msg_format, va_list ap)
4487 vfprintf(stderr, msg_format, ap);
4488 fprintf(stderr, "\n");
4492 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4497 * indent-tabs-mode: nil
4500 * vi: set shiftwidth=2 tabstop=8 expandtab:
4501 * :indentSize=2:tabSize=8:noTabs=true: