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>.
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
50 #ifdef HAVE_SYS_STAT_H
51 # include <sys/stat.h>
55 #include "wsutil/wsgetopt.h"
59 #include <epan/epan.h>
60 #include <epan/filesystem.h>
61 #include <wsutil/privileges.h>
62 #include <wsutil/file_util.h>
65 #include <epan/timestamp.h>
66 #include <epan/packet.h>
68 #include "disabled_protos.h"
69 #include <epan/prefs.h>
70 #include <epan/column.h>
72 #include <epan/addr_resolv.h>
74 #include "clopts_common.h"
75 #include "console_io.h"
76 #include "cmdarg_err.h"
77 #include "version_info.h"
78 #include <epan/plugins.h>
80 #include <epan/epan_dissect.h>
82 #include <epan/stat_cmd_args.h>
83 #include <epan/timestamp.h>
84 #include <epan/ex-opt.h>
87 #include "capture_ui_utils.h"
88 #include "capture_ifinfo.h"
89 #include "capture-pcap-util.h"
91 #include "capture-wpcap.h"
92 #include "capture_errs.h"
93 #include <wsutil/unicode-utils.h>
95 #include "capture_sync.h"
96 #endif /* HAVE_LIBPCAP */
98 #include <epan/funnel.h>
101 * This is the template for the decode as option; it is shared between the
102 * various functions that output the usage for this parameter.
104 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
106 static guint32 cum_bytes;
107 static nstime_t first_ts;
108 static nstime_t prev_dis_ts;
109 static nstime_t prev_cap_ts;
111 static gboolean print_packet_info; /* TRUE if we're to print packet information */
113 static gboolean perform_two_pass_analysis;
116 * The way the packet decode is to be written.
119 WRITE_TEXT, /* summary or detail text */
120 WRITE_XML, /* PDML or PSML */
121 WRITE_FIELDS /* User defined list of fields */
122 /* Add CSV and the like here */
125 static output_action_e output_action;
126 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
127 static gboolean verbose;
128 static gboolean print_hex;
129 static gboolean line_buffered;
131 static print_format_e print_format = PR_FMT_TEXT;
132 static print_stream_t *print_stream;
134 static output_fields_t* output_fields = NULL;
136 /* The line separator used between packets, changeable via the -S option */
137 static char *separator = "";
141 * TRUE if we're to print packet counts to keep track of captured packets.
143 static gboolean print_packet_counts;
145 static capture_options global_capture_opts;
148 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
149 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
152 static gboolean capture(void);
153 static void report_counts(void);
155 static BOOL WINAPI capture_cleanup(DWORD);
157 static void capture_cleanup(int);
159 static void report_counts_siginfo(int);
162 #endif /* HAVE_LIBPCAP */
164 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
165 static gboolean process_packet(capture_file *cf, gint64 offset,
166 const struct wtap_pkthdr *whdr, union wtap_pseudo_header *pseudo_header,
167 const guchar *pd, gboolean filtering_tap_listeners, guint tap_flags);
168 static void show_capture_file_io_error(const char *, int, gboolean);
169 static void show_print_file_io_error(int err);
170 static gboolean write_preamble(capture_file *cf);
171 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
172 static gboolean write_finale(void);
173 static const char *cf_open_error_message(int err, gchar *err_info,
174 gboolean for_writing, int file_type);
176 static void open_failure_message(const char *filename, int err,
177 gboolean for_writing);
178 static void failure_message(const char *msg_format, va_list ap);
179 static void read_failure_message(const char *filename, int err);
180 static void write_failure_message(const char *filename, int err);
185 const char *sstr; /* The short string */
186 const char *lstr; /* The long string */
190 string_compare(gconstpointer a, gconstpointer b)
192 return strcmp(((const struct string_elem *)a)->sstr,
193 ((const struct string_elem *)b)->sstr);
197 string_elem_print(gpointer data, gpointer not_used _U_)
199 fprintf(stderr, " %s - %s\n",
200 ((struct string_elem *)data)->sstr,
201 ((struct string_elem *)data)->lstr);
205 list_capture_types(void) {
207 struct string_elem *captypes;
210 captypes = g_malloc(sizeof(struct string_elem) * WTAP_NUM_FILE_TYPES);
212 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
213 for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
214 if (wtap_dump_can_open(i)) {
215 captypes[i].sstr = wtap_file_type_short_string(i);
216 captypes[i].lstr = wtap_file_type_string(i);
217 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
220 g_slist_foreach(list, string_elem_print, NULL);
226 print_usage(gboolean print_ver)
233 "TShark " VERSION "%s\n"
234 "Dump and analyze network traffic.\n"
235 "See http://www.wireshark.org for more information.\n"
238 wireshark_svnversion, get_copyright_info());
242 fprintf(output, "\n");
243 fprintf(output, "Usage: tshark [options] ...\n");
244 fprintf(output, "\n");
247 fprintf(output, "Capture interface:\n");
248 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
249 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
250 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
251 fprintf(output, " -p don't capture in promiscuous mode\n");
252 #ifdef HAVE_PCAP_CREATE
253 fprintf(output, " -I capture in monitor mode, if available\n");
255 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
256 fprintf(output, " -B <buffer size> size of kernel buffer (def: 1MB)\n");
258 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
259 fprintf(output, " -D print list of interfaces and exit\n");
260 fprintf(output, " -L print list of link-layer types of iface and exit\n");
261 fprintf(output, "\n");
262 fprintf(output, "Capture stop conditions:\n");
263 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
264 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
265 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
266 fprintf(output, " files:NUM - stop after NUM files\n");
267 /*fprintf(output, "\n");*/
268 fprintf(output, "Capture output:\n");
269 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
270 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
271 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
272 #endif /* HAVE_LIBPCAP */
274 /*fprintf(output, "\n");*/
275 fprintf(output, "Input file:\n");
276 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
278 fprintf(output, "\n");
279 fprintf(output, "Processing:\n");
280 fprintf(output, " -2 perform a two-pass analysis\n");
281 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
282 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
283 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
284 fprintf(output, " -d %s ...\n", decode_as_arg_template);
285 fprintf(output, " \"Decode As\", see the man page for details\n");
286 fprintf(output, " Example: tcp.port==8888,http\n");
288 /*fprintf(output, "\n");*/
289 fprintf(output, "Output:\n");
290 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
291 fprintf(output, " (or to the standard output for \"-\")\n");
292 fprintf(output, " -C <config profile> start with specified configuration profile\n");
293 fprintf(output, " -F <output file type> set the output file type, default is libpcap\n");
294 fprintf(output, " an empty \"-F\" option will list the file types\n");
295 fprintf(output, " -V add output of packet tree (Packet Details)\n");
296 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
297 fprintf(output, " separated\n");
298 fprintf(output, " -P print packets even when writing to a file\n");
299 fprintf(output, " -S <separator> the line separator to print between packets\n");
300 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
301 fprintf(output, " -T pdml|ps|psml|text|fields\n");
302 fprintf(output, " format of text output (def: text)\n");
303 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
304 fprintf(output, " this option can be repeated to print multiple fields\n");
305 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
306 fprintf(output, " header=y|n switch headers on and off\n");
307 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
308 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
309 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
310 fprintf(output, " aggregator\n");
311 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
312 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
313 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
314 fprintf(output, " -l flush standard output after each packet\n");
315 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
316 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
317 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
319 fprintf(output, "\n");
320 fprintf(output, "Miscellaneous:\n");
321 fprintf(output, " -h display this help and exit\n");
322 fprintf(output, " -v display version info and exit\n");
323 fprintf(output, " -o <name>:<value> ... override preference setting\n");
324 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
325 fprintf(output, " -G [report] dump one of several available reports and exit\n");
326 fprintf(output, " default report=\"fields\"\n");
327 fprintf(output, " use \"-G ?\" for more help\n");
331 glossary_option_help(void)
337 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
339 fprintf(output, "\n");
340 fprintf(output, "Usage: tshark -G [report]\n");
341 fprintf(output, "\n");
342 fprintf(output, "Glossary table reports:\n");
343 fprintf(output, " -G [fields] dump glossary in original format and exit\n");
344 fprintf(output, " -G fields2 dump glossary in format 2 and exit\n");
345 fprintf(output, " -G fields3 dump glossary in format 3 and exit\n");
346 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
347 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
348 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
349 fprintf(output, "\n");
350 fprintf(output, "Preference reports:\n");
351 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
352 fprintf(output, " -G currentprefs dump current preferences and exit\n");
353 fprintf(output, "\n");
358 * For a dissector table, print on the stream described by output,
359 * its short name (which is what's used in the "-d" option) and its
363 display_dissector_table_names(const char *table_name, const char *ui_name,
366 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
370 * For a dissector handle, print on the stream described by output,
371 * the filter name (which is what's used in the "-d" option) and the full
372 * name for the protocol that corresponds to this handle.
375 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
378 const gchar* proto_filter_name;
379 const gchar* proto_ui_name;
381 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
383 if (proto_id != -1) {
384 proto_filter_name = proto_get_protocol_filter_name(proto_id);
385 proto_ui_name = proto_get_protocol_name(proto_id);
386 g_assert(proto_filter_name != NULL);
387 g_assert(proto_ui_name != NULL);
389 fprintf((FILE *)output, "\t%s (%s)\n",
396 * The protocol_name_search structure is used by find_protocol_name_func()
397 * to pass parameters and store results
399 struct protocol_name_search{
400 gchar *searched_name; /* Protocol filter name we are looking for */
401 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
402 guint nb_match; /* How many dissectors matched searched_name */
404 typedef struct protocol_name_search *protocol_name_search_t;
407 * This function parses all dissectors associated with a table to find the
408 * one whose protocol has the specified filter name. It is called
409 * as a reference function in a call to dissector_table_foreach_handle.
410 * The name we are looking for, as well as the results, are stored in the
411 * protocol_name_search struct pointed to by user_data.
412 * If called using dissector_table_foreach_handle, we actually parse the
413 * whole list of dissectors.
416 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
420 const gchar *protocol_filter_name;
421 protocol_name_search_t search_info;
425 search_info = (protocol_name_search_t)user_data;
427 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
428 if (proto_id != -1) {
429 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
430 g_assert(protocol_filter_name != NULL);
431 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
433 if (search_info->nb_match == 0) {
434 /* Record this handle only if this is the first match */
435 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
437 search_info->nb_match++;
443 * Print all layer type names supported.
444 * We send the output to the stream described by the handle output.
448 fprint_all_layer_types(FILE *output)
451 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
455 * Print all protocol names supported for a specific layer type.
456 * table_name contains the layer type name in which the search is performed.
457 * We send the output to the stream described by the handle output.
461 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
464 dissector_table_foreach_handle(table_name,
465 display_dissector_names,
470 * The function below parses the command-line parameters for the decode as
471 * feature (a string pointer by cl_param).
472 * It checks the format of the command-line, searches for a matching table
473 * and dissector. If a table/dissector match is not found, we display a
474 * summary of the available tables/dissectors (on stderr) and return FALSE.
475 * If everything is fine, we get the "Decode as" preference activated,
476 * then we return TRUE.
479 add_decode_as(const gchar *cl_param)
483 gchar *decoded_param;
484 gchar *remaining_param;
486 gchar *dissector_str;
487 dissector_handle_t dissector_matching;
488 dissector_table_t table_matching;
489 ftenum_t dissector_table_selector_type;
490 struct protocol_name_search user_protocol_name;
492 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
495 decoded_param = g_strdup(cl_param);
496 g_assert(decoded_param);
499 /* The lines below will parse this string (modifying it) to extract all
500 necessary information. Note that decoded_param is still needed since
501 strings are not copied - we just save pointers. */
503 /* This section extracts a layer type (table_name) from decoded_param */
504 table_name = decoded_param; /* Layer type string starts from beginning */
506 remaining_param = strchr(table_name, '=');
507 if (remaining_param == NULL) {
508 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
509 /* If the argument does not follow the template, carry on anyway to check
510 if the table name is at least correct. If remaining_param is NULL,
511 we'll exit anyway further down */
514 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
517 /* Remove leading and trailing spaces from the table name */
518 while ( table_name[0] == ' ' )
520 while ( table_name[strlen(table_name) - 1] == ' ' )
521 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
523 /* The following part searches a table matching with the layer type specified */
524 table_matching = NULL;
526 /* Look for the requested table */
527 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
528 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
531 table_matching = find_dissector_table(table_name);
532 if (!table_matching) {
533 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
537 if (!table_matching) {
538 /* Display a list of supported layer types to help the user, if the
539 specified layer type was not found */
540 cmdarg_err("Valid layer types are:");
541 fprint_all_layer_types(stderr);
543 if (remaining_param == NULL || !table_matching) {
544 /* Exit if the layer type was not found, or if no '=' separator was found
546 g_free(decoded_param);
550 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
551 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
554 remaining_param++; /* Move to the second '=' */
555 *remaining_param = '\0'; /* Remove the second '=' */
557 remaining_param++; /* Position after the layer type string */
559 /* This section extracts a selector value (selector_str) from decoded_param */
561 selector_str = remaining_param; /* Next part starts with the selector number */
563 remaining_param = strchr(selector_str, ',');
564 if (remaining_param == NULL) {
565 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
566 /* If the argument does not follow the template, carry on anyway to check
567 if the selector value is at least correct. If remaining_param is NULL,
568 we'll exit anyway further down */
571 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
574 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
576 switch (dissector_table_selector_type) {
582 /* The selector for this table is an unsigned number. Parse it as such.
583 There's no need to remove leading and trailing spaces from the
584 selector number string, because sscanf will do that for us. */
585 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
586 cmdarg_err("Invalid selector number \"%s\"", selector_str);
587 g_free(decoded_param);
594 /* The selector for this table is a string. */
598 /* There are currently no dissector tables with any types other
599 than the ones listed above. */
600 g_assert_not_reached();
603 if (remaining_param == NULL) {
604 /* Exit if no ',' separator was found (see above) */
605 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
606 fprint_all_protocols_for_layer_types(stderr, table_name);
607 g_free(decoded_param);
611 remaining_param++; /* Position after the selector number string */
613 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
615 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
617 /* Remove leading and trailing spaces from the dissector name */
618 while ( dissector_str[0] == ' ' )
620 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
621 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
623 dissector_matching = NULL;
625 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
626 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 */
627 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
630 user_protocol_name.nb_match = 0;
631 user_protocol_name.searched_name = dissector_str;
632 user_protocol_name.matched_handle = NULL;
634 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 */
636 if (user_protocol_name.nb_match != 0) {
637 dissector_matching = user_protocol_name.matched_handle;
638 if (user_protocol_name.nb_match > 1) {
639 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
643 /* OK, check whether the problem is that there isn't any such
644 protocol, or that there is but it's not specified as a protocol
645 that's valid for that dissector table.
646 Note, we don't exit here, but dissector_matching will remain NULL,
648 if (proto_get_id_by_filter_name(dissector_str) == -1) {
649 /* No such protocol */
650 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
652 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
653 dissector_str, table_name);
658 if (!dissector_matching) {
659 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
660 fprint_all_protocols_for_layer_types(stderr, table_name);
661 g_free(decoded_param);
665 /* This is the end of the code that parses the command-line options.
666 All information is now stored in the variables:
670 The above variables that are strings are still pointing to areas within
671 decoded_parm. decoded_parm thus still needs to be kept allocated in
672 until we stop needing these variables
673 decoded_param will be deallocated at each exit point of this function */
676 /* We now have a pointer to the handle for the requested dissector
677 (requested protocol) inside the variable dissector_matching */
678 switch (dissector_table_selector_type) {
684 /* The selector for this table is an unsigned number. */
685 dissector_change_uint(table_name, selector, dissector_matching);
690 /* The selector for this table is a string. */
691 dissector_change_string(table_name, selector_str, dissector_matching);
695 /* There are currently no dissector tables with any types other
696 than the ones listed above. */
697 g_assert_not_reached();
699 g_free(decoded_param); /* "Decode As" rule has been successfully added */
704 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
705 const gchar *message, gpointer user_data)
707 /* ignore log message, if log_level isn't interesting based
708 upon the console log preferences.
709 If the preferences haven't been loaded loaded yet, display the
712 The default console_log_level preference value is such that only
713 ERROR, CRITICAL and WARNING level messages are processed;
714 MESSAGE, INFO and DEBUG level messages are ignored.
716 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
717 ERROR and CRITICAL level messages so the current code is a behavioral
718 change. The current behavior is the same as in Wireshark.
720 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
721 prefs.console_log_level != 0) {
725 g_log_default_handler(log_domain, log_level, message, user_data);
730 output_file_description(const char *fname)
732 char *save_file_string;
734 /* Get a string that describes what we're writing to */
735 if (strcmp(fname, "-") == 0) {
736 /* We're writing to the standard output */
737 save_file_string = g_strdup("standard output");
739 /* We're writing to a file with the name in save_file */
740 save_file_string = g_strdup_printf("file \"%s\"", fname);
742 return save_file_string;
746 print_current_user(void) {
747 gchar *cur_user, *cur_group;
748 if (started_with_special_privs()) {
749 cur_user = get_cur_username();
750 cur_group = get_cur_groupname();
751 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
752 cur_user, cur_group);
755 if (running_with_special_privs()) {
756 fprintf(stderr, " This could be dangerous.");
758 fprintf(stderr, "\n");
763 check_capture_privs(void) {
766 /* Warn the user if npf.sys isn't loaded. */
767 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
768 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
769 "capturing or\nlisting interfaces.\n");
775 show_version(GString *comp_info_str, GString *runtime_info_str)
777 printf("TShark " VERSION "%s\n"
784 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
785 runtime_info_str->str);
789 main(int argc, char *argv[])
791 char *init_progfile_dir_error;
793 gboolean arg_error = FALSE;
799 char *gpf_path, *pf_path;
800 char *gdp_path, *dp_path;
801 int gpf_open_errno, gpf_read_errno;
802 int pf_open_errno, pf_read_errno;
803 int gdp_open_errno, gdp_read_errno;
804 int dp_open_errno, dp_read_errno;
806 volatile int exit_status = 0;
808 gboolean list_link_layer_types = FALSE;
809 gboolean start_capture = FALSE;
814 interface_options interface_opts;
816 gboolean capture_option_specified = FALSE;
818 gboolean quiet = FALSE;
819 #ifdef PCAP_NG_DEFAULT
820 volatile int out_file_type = WTAP_FILE_PCAPNG;
822 volatile int out_file_type = WTAP_FILE_PCAP;
824 volatile gboolean out_file_name_res = FALSE;
825 gchar *volatile cf_name = NULL;
826 gchar *rfilter = NULL;
827 #ifdef HAVE_PCAP_OPEN_DEAD
828 struct bpf_program fcode;
830 dfilter_t *rfcode = NULL;
833 GLogLevelFlags log_flags;
835 gchar *output_only = NULL;
838 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
839 #define OPTSTRING_B "B:"
841 #define OPTSTRING_B ""
842 #endif /* _WIN32 or HAVE_PCAP_CREATE */
843 #else /* HAVE_LIBPCAP */
844 #define OPTSTRING_B ""
845 #endif /* HAVE_LIBPCAP */
847 #ifdef HAVE_PCAP_CREATE
848 #define OPTSTRING_I "I"
850 #define OPTSTRING_I ""
853 #define OPTSTRING "2a:A:b:" OPTSTRING_B "c:C:d:De:E:f:F:G:hH:i:" OPTSTRING_I "K:lLnN:o:O:pPqr:R:s:S:t:T:u:vVw:W:xX:y:z:"
855 static const char optstring[] = OPTSTRING;
858 arg_list_utf_16to8(argc, argv);
859 #if !GLIB_CHECK_VERSION(2,31,0)
865 * Get credential information for later use.
867 init_process_policies();
870 * Attempt to get the pathname of the executable file.
872 init_progfile_dir_error = init_progfile_dir(argv[0], main);
873 if (init_progfile_dir_error != NULL) {
874 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
875 init_progfile_dir_error);
879 * In order to have the -X opts assigned before the wslua machine starts
880 * we need to call getopts before epan_init() gets called.
883 optind_initial = optind;
885 while ((opt = getopt(argc, argv, optstring)) != -1) {
887 case 'C': /* Configuration Profile */
888 if (profile_exists (optarg, FALSE)) {
889 set_profile_name (optarg);
891 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
903 optind = optind_initial;
908 /** Send All g_log messages to our own handler **/
912 G_LOG_LEVEL_CRITICAL|
917 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
919 g_log_set_handler(NULL,
921 tshark_log_handler, NULL /* user_data */);
922 g_log_set_handler(LOG_DOMAIN_MAIN,
924 tshark_log_handler, NULL /* user_data */);
927 g_log_set_handler(LOG_DOMAIN_CAPTURE,
929 tshark_log_handler, NULL /* user_data */);
930 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
932 tshark_log_handler, NULL /* user_data */);
935 initialize_funnel_ops();
938 capture_opts_init(&global_capture_opts, &cfile);
941 timestamp_set_type(TS_RELATIVE);
942 timestamp_set_precision(TS_PREC_AUTO);
943 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
945 /* Register all dissectors; we must do this before checking for the
946 "-G" flag, as the "-G" flag dumps information registered by the
947 dissectors, and we must do it before we read the preferences, in
948 case any dissectors register preferences. */
949 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
950 failure_message, open_failure_message, read_failure_message,
951 write_failure_message);
953 /* Register all tap listeners; we do this before we parse the arguments,
954 as the "-z" argument can specify a registered tap. */
956 /* we register the plugin taps before the other taps because
957 stats_tree taps plugins will be registered as tap listeners
958 by stats_tree_stat.c and need to registered before that */
960 register_all_plugin_tap_listeners();
962 register_all_tap_listeners();
964 /* Now register the preferences for any non-dissector modules.
965 We must do that before we read the preferences as well. */
966 prefs_register_modules();
968 /* If invoked with the "-G" flag, we dump out information based on
969 the argument to the "-G" flag; if no argument is specified,
970 for backwards compatibility we dump out a glossary of display
973 XXX - we do this here, for now, to support "-G" with no arguments.
974 If none of our build or other processes uses "-G" with no arguments,
975 we can just process it with the other arguments. */
976 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
977 proto_initialize_all_prefixes();
980 proto_registrar_dump_fields(1);
982 if (strcmp(argv[2], "fields") == 0)
983 proto_registrar_dump_fields(1);
984 else if (strcmp(argv[2], "fields2") == 0)
985 proto_registrar_dump_fields(2);
986 else if (strcmp(argv[2], "fields3") == 0)
987 proto_registrar_dump_fields(3);
988 else if (strcmp(argv[2], "protocols") == 0)
989 proto_registrar_dump_protocols();
990 else if (strcmp(argv[2], "values") == 0)
991 proto_registrar_dump_values();
992 else if (strcmp(argv[2], "decodes") == 0)
993 dissector_dump_decodes();
994 else if (strcmp(argv[2], "defaultprefs") == 0)
996 else if (strcmp(argv[2], "plugins") == 0)
998 else if (strcmp(argv[2], "?") == 0)
999 glossary_option_help();
1000 else if (strcmp(argv[2], "-?") == 0)
1001 glossary_option_help();
1002 else if (strcmp(argv[2], "currentprefs") == 0) {
1003 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1004 &pf_open_errno, &pf_read_errno, &pf_path);
1007 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1014 /* Set the C-language locale to the native environment. */
1015 setlocale(LC_ALL, "");
1017 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1018 &pf_open_errno, &pf_read_errno, &pf_path);
1019 if (gpf_path != NULL) {
1020 if (gpf_open_errno != 0) {
1021 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1022 pf_path, g_strerror(gpf_open_errno));
1024 if (gpf_read_errno != 0) {
1025 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1026 pf_path, g_strerror(gpf_read_errno));
1029 if (pf_path != NULL) {
1030 if (pf_open_errno != 0) {
1031 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1032 g_strerror(pf_open_errno));
1034 if (pf_read_errno != 0) {
1035 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1036 pf_path, g_strerror(pf_read_errno));
1042 /* Set the name resolution code's flags from the preferences. */
1043 gbl_resolv_flags = prefs_p->name_resolve;
1045 /* Read the disabled protocols file. */
1046 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1047 &dp_path, &dp_open_errno, &dp_read_errno);
1048 if (gdp_path != NULL) {
1049 if (gdp_open_errno != 0) {
1050 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1051 gdp_path, g_strerror(gdp_open_errno));
1053 if (gdp_read_errno != 0) {
1054 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1055 gdp_path, g_strerror(gdp_read_errno));
1059 if (dp_path != NULL) {
1060 if (dp_open_errno != 0) {
1062 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1063 g_strerror(dp_open_errno));
1065 if (dp_read_errno != 0) {
1067 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1068 g_strerror(dp_read_errno));
1073 check_capture_privs();
1075 cap_file_init(&cfile);
1077 /* Print format defaults to this. */
1078 print_format = PR_FMT_TEXT;
1080 output_fields = output_fields_new();
1082 /* Now get our args */
1083 while ((opt = getopt(argc, argv, optstring)) != -1) {
1085 case '2': /* Perform two pass analysis */
1086 perform_two_pass_analysis = TRUE;
1088 case 'a': /* autostop criteria */
1089 case 'b': /* Ringbuffer option */
1090 case 'c': /* Capture x packets */
1091 case 'f': /* capture filter */
1092 case 'i': /* Use interface x */
1093 case 'p': /* Don't capture in promiscuous mode */
1094 #ifdef HAVE_PCAP_CREATE
1095 case 'I': /* Capture in monitor mode, if available */
1097 case 's': /* Set the snapshot (capture) length */
1098 case 'w': /* Write to capture file x */
1099 case 'y': /* Set the pcap data link type */
1100 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1101 case 'B': /* Buffer size */
1102 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1104 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1109 capture_option_specified = TRUE;
1114 /* Configuration profile settings were already processed just ignore them this time*/
1116 case 'd': /* Decode as rule */
1117 if (!add_decode_as(optarg))
1120 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1121 case 'K': /* Kerberos keytab file */
1122 read_keytab_file(optarg);
1125 case 'D': /* Print a list of capture devices and exit */
1127 if_list = capture_interface_list(&err, &err_str);
1128 if (if_list == NULL) {
1130 case CANT_GET_INTERFACE_LIST:
1131 cmdarg_err("%s", err_str);
1135 case NO_INTERFACES_FOUND:
1136 cmdarg_err("There are no interfaces on which a capture can be done");
1141 capture_opts_print_interfaces(if_list);
1142 free_interface_list(if_list);
1145 capture_option_specified = TRUE;
1151 output_fields_add(output_fields, optarg);
1155 if(!output_fields_set_option(output_fields, optarg)) {
1156 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1157 output_fields_list_options(stderr);
1162 out_file_type = wtap_short_string_to_file_type(optarg);
1163 if (out_file_type < 0) {
1164 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1165 list_capture_types();
1169 case 'W': /* Select extra information to save in our capture file */
1170 /* This is patterned after the -N flag which may not be the best idea. */
1171 if (strchr(optarg, 'n'))
1172 out_file_name_res = TRUE;
1174 case 'H': /* Read address to name mappings from a hosts file */
1175 if (! read_hosts_file(optarg))
1177 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1180 out_file_name_res = TRUE;
1183 case 'h': /* Print help and exit */
1187 case 'l': /* "Line-buffer" standard output */
1188 /* This isn't line-buffering, strictly speaking, it's just
1189 flushing the standard output after the information for
1190 each packet is printed; however, that should be good
1191 enough for all the purposes to which "-l" is put (and
1192 is probably actually better for "-V", as it does fewer
1195 See the comment in "process_packet()" for an explanation of
1196 why we do that, and why we don't just use "setvbuf()" to
1197 make the standard output line-buffered (short version: in
1198 Windows, "line-buffered" is the same as "fully-buffered",
1199 and the output buffer is only flushed when it fills up). */
1200 line_buffered = TRUE;
1202 case 'L': /* Print list of link-layer types and exit */
1204 list_link_layer_types = TRUE;
1206 capture_option_specified = TRUE;
1210 case 'n': /* No name resolution */
1211 gbl_resolv_flags = RESOLV_NONE;
1213 case 'N': /* Select what types of addresses/port #s to resolve */
1214 if (gbl_resolv_flags == RESOLV_ALL)
1215 gbl_resolv_flags = RESOLV_NONE;
1216 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1217 if (badopt != '\0') {
1218 cmdarg_err("-N specifies unknown resolving option '%c';",
1220 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1224 case 'o': /* Override preference from command line */
1225 switch (prefs_set_pref(optarg)) {
1230 case PREFS_SET_SYNTAX_ERR:
1231 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1235 case PREFS_SET_NO_SUCH_PREF:
1236 case PREFS_SET_OBSOLETE:
1237 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1242 case 'q': /* Quiet */
1245 case 'r': /* Read capture file x */
1246 cf_name = g_strdup(optarg);
1248 case 'R': /* Read file filter */
1251 case 'P': /* Print packets even when writing to a file */
1252 print_packet_info = TRUE;
1254 case 'S': /* Set the line Separator to be printed between packets */
1255 separator = strdup(optarg);
1257 case 't': /* Time stamp type */
1258 if (strcmp(optarg, "r") == 0)
1259 timestamp_set_type(TS_RELATIVE);
1260 else if (strcmp(optarg, "a") == 0)
1261 timestamp_set_type(TS_ABSOLUTE);
1262 else if (strcmp(optarg, "ad") == 0)
1263 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1264 else if (strcmp(optarg, "d") == 0)
1265 timestamp_set_type(TS_DELTA);
1266 else if (strcmp(optarg, "dd") == 0)
1267 timestamp_set_type(TS_DELTA_DIS);
1268 else if (strcmp(optarg, "e") == 0)
1269 timestamp_set_type(TS_EPOCH);
1270 else if (strcmp(optarg, "u") == 0)
1271 timestamp_set_type(TS_UTC);
1272 else if (strcmp(optarg, "ud") == 0)
1273 timestamp_set_type(TS_UTC_WITH_DATE);
1275 cmdarg_err("Invalid time stamp type \"%s\"",
1277 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1278 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1282 case 'T': /* printing Type */
1283 if (strcmp(optarg, "text") == 0) {
1284 output_action = WRITE_TEXT;
1285 print_format = PR_FMT_TEXT;
1286 } else if (strcmp(optarg, "ps") == 0) {
1287 output_action = WRITE_TEXT;
1288 print_format = PR_FMT_PS;
1289 } else if (strcmp(optarg, "pdml") == 0) {
1290 output_action = WRITE_XML;
1292 } else if (strcmp(optarg, "psml") == 0) {
1293 output_action = WRITE_XML;
1295 } else if(strcmp(optarg, "fields") == 0) {
1296 output_action = WRITE_FIELDS;
1297 verbose = TRUE; /* Need full tree info */
1299 cmdarg_err("Invalid -T parameter.");
1300 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1304 case 'u': /* Seconds type */
1305 if (strcmp(optarg, "s") == 0)
1306 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1307 else if (strcmp(optarg, "hms") == 0)
1308 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1310 cmdarg_err("Invalid seconds type \"%s\"", optarg);
1311 cmdarg_err_cont("It must be \"s\" for seconds or \"hms\" for hours, minutes and seconds.");
1315 case 'v': /* Show version and exit */
1317 GString *comp_info_str;
1318 GString *runtime_info_str;
1319 /* Assemble the compile-time version information string */
1320 comp_info_str = g_string_new("Compiled ");
1321 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1323 /* Assemble the run-time version information string */
1324 runtime_info_str = g_string_new("Running ");
1325 get_runtime_version_info(runtime_info_str, NULL);
1326 show_version(comp_info_str, runtime_info_str);
1327 g_string_free(comp_info_str, TRUE);
1328 g_string_free(runtime_info_str, TRUE);
1332 case 'O': /* Only output these protocols */
1333 output_only = g_strdup(optarg);
1335 case 'V': /* Verbose */
1337 /* The user asked for a verbose output, so let's ensure they get it,
1338 * even if they're writing to a file.
1340 print_packet_info = TRUE;
1342 case 'x': /* Print packet data in hex (and ASCII) */
1344 /* The user asked for hex output, so let's ensure they get it,
1345 * even if they're writing to a file.
1347 print_packet_info = TRUE;
1352 /* We won't call the init function for the stat this soon
1353 as it would disallow MATE's fields (which are registered
1354 by the preferences set callback) from being used as
1355 part of a tap filter. Instead, we just add the argument
1356 to a list of stat arguments. */
1357 if (!process_stat_cmd_arg(optarg)) {
1358 cmdarg_err("invalid -z argument.");
1359 cmdarg_err_cont(" -z argument must be one of :");
1360 list_stat_cmd_args();
1365 case '?': /* Bad flag - print usage message */
1368 list_capture_types();
1378 /* If we specified output fields, but not the output field type... */
1379 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1380 cmdarg_err("Output fields were specified with \"-e\", "
1381 "but \"-Tfields\" was not specified.");
1383 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1384 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1385 "specified with \"-e\".");
1390 /* If no capture filter or read filter has been specified, and there are
1391 still command-line arguments, treat them as the tokens of a capture
1392 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1393 flag was specified. */
1394 if (optind < argc) {
1395 if (cf_name != NULL) {
1396 if (rfilter != NULL) {
1397 cmdarg_err("Read filters were specified both with \"-R\" "
1398 "and with additional command-line arguments.");
1401 rfilter = get_args_as_string(argc, argv, optind);
1404 if (global_capture_opts.default_options.cfilter) {
1405 cmdarg_err("A default capture filter was specified both with \"-f\""
1406 " and with additional command-line arguments.");
1409 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1410 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1411 if (interface_opts.cfilter == NULL) {
1412 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1413 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1414 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1416 cmdarg_err("A capture filter was specified both with \"-f\""
1417 " and with additional command-line arguments.");
1421 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1423 capture_option_specified = TRUE;
1429 if (!global_capture_opts.saving_to_file) {
1430 /* We're not saving the capture to a file; if "-q" wasn't specified,
1431 we should print packet information */
1433 print_packet_info = TRUE;
1435 /* We're saving to a file; if we're writing to the standard output.
1436 and we'll also be writing dissected packets to the standard
1437 output, reject the request. At best, we could redirect that
1438 to the standard error; we *can't* write both to the standard
1439 output and have either of them be useful. */
1440 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1441 cmdarg_err("You can't write both raw packet data and dissected packets"
1442 " to the standard output.");
1447 /* We're not saving the capture to a file; if "-q" wasn't specified,
1448 we should print packet information */
1450 print_packet_info = TRUE;
1453 #ifndef HAVE_LIBPCAP
1454 if (capture_option_specified)
1455 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1462 /* We don't support capture filters when reading from a capture file
1463 (the BPF compiler doesn't support all link-layer types that we
1464 support in capture files we read). */
1466 if (cf_name != NULL) {
1467 if (global_capture_opts.default_options.cfilter) {
1468 cmdarg_err("Only read filters, not capture filters, "
1469 "can be specified when reading a capture file.");
1476 if (output_action != WRITE_TEXT) {
1477 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1482 if (output_only != NULL) {
1486 cmdarg_err("-O requires -V");
1490 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1491 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1492 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1497 if (list_link_layer_types) {
1498 /* We're supposed to list the link-layer types for an interface;
1499 did the user also specify a capture file to be read? */
1501 /* Yes - that's bogus. */
1502 cmdarg_err("You can't specify -L and a capture file to be read.");
1505 /* No - did they specify a ring buffer option? */
1506 if (global_capture_opts.multi_files_on) {
1507 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1513 * "-r" was specified, so we're reading a capture file.
1514 * Capture options don't apply here.
1516 if (global_capture_opts.multi_files_on) {
1517 cmdarg_err("Multiple capture files requested, but "
1518 "a capture isn't being done.");
1521 if (global_capture_opts.has_file_duration) {
1522 cmdarg_err("Switching capture files after a time interval was specified, but "
1523 "a capture isn't being done.");
1526 if (global_capture_opts.has_ring_num_files) {
1527 cmdarg_err("A ring buffer of capture files was specified, but "
1528 "a capture isn't being done.");
1531 if (global_capture_opts.has_autostop_files) {
1532 cmdarg_err("A maximum number of capture files was specified, but "
1533 "a capture isn't being done.");
1537 /* Note: TShark now allows the restriction of a _read_ file by packet count
1538 * and byte count as well as a write file. Other autostop options remain valid
1539 * only for a write file.
1541 if (global_capture_opts.has_autostop_duration) {
1542 cmdarg_err("A maximum capture time was specified, but "
1543 "a capture isn't being done.");
1548 * "-r" wasn't specified, so we're doing a live capture.
1550 if (global_capture_opts.saving_to_file) {
1551 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1553 /* When capturing, we only support writing pcap or pcap-ng format. */
1554 if (out_file_type != WTAP_FILE_PCAP && out_file_type != WTAP_FILE_PCAPNG) {
1555 cmdarg_err("Live captures can only be saved in libpcap format.");
1558 if (global_capture_opts.multi_files_on) {
1559 /* Multiple-file mode doesn't work under certain conditions:
1560 a) it doesn't work if you're writing to the standard output;
1561 b) it doesn't work if you're writing to a pipe;
1563 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1564 cmdarg_err("Multiple capture files requested, but "
1565 "the capture is being written to the standard output.");
1568 if (global_capture_opts.output_to_pipe) {
1569 cmdarg_err("Multiple capture files requested, but "
1570 "the capture file is a pipe.");
1573 if (!global_capture_opts.has_autostop_filesize &&
1574 !global_capture_opts.has_file_duration) {
1575 cmdarg_err("Multiple capture files requested, but "
1576 "no maximum capture file size or duration was specified.");
1580 /* Currently, we don't support read filters when capturing
1581 and saving the packets. */
1582 if (rfilter != NULL) {
1583 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1587 /* They didn't specify a "-w" flag, so we won't be saving to a
1588 capture file. Check for options that only make sense if
1589 we're saving to a file. */
1590 if (global_capture_opts.has_autostop_filesize) {
1591 cmdarg_err("Maximum capture file size specified, but "
1592 "capture isn't being saved to a file.");
1595 if (global_capture_opts.multi_files_on) {
1596 cmdarg_err("Multiple capture files requested, but "
1597 "the capture isn't being saved to a file.");
1606 /* Start windows sockets */
1607 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1610 /* Notify all registered modules that have had any of their preferences
1611 changed either from one of the preferences file or from the command
1612 line that their preferences have changed. */
1615 /* At this point MATE will have registered its field array so we can
1616 have a tap filter with one of MATE's late-registered fields as part
1617 of the filter. We can now process all the "-z" arguments. */
1618 start_requested_stats();
1621 /* We currently don't support taps, or printing dissected packets,
1622 if we're writing to a pipe. */
1623 if (global_capture_opts.saving_to_file &&
1624 global_capture_opts.output_to_pipe) {
1625 if (tap_listeners_require_dissection()) {
1626 cmdarg_err("Taps aren't supported when saving to a pipe.");
1629 if (print_packet_info) {
1630 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1636 /* disabled protocols as per configuration file */
1637 if (gdp_path == NULL && dp_path == NULL) {
1638 set_disabled_protos_list();
1641 /* Build the column format array */
1642 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1645 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1646 capture_opts_trim_ring_num_files(&global_capture_opts);
1649 if (rfilter != NULL) {
1650 if (!dfilter_compile(rfilter, &rfcode)) {
1651 cmdarg_err("%s", dfilter_error_msg);
1653 #ifdef HAVE_PCAP_OPEN_DEAD
1657 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1659 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1661 " Note: That display filter code looks like a valid capture filter;");
1663 " maybe you mixed them up?");
1672 cfile.rfcode = rfcode;
1674 if (print_packet_info) {
1675 /* If we're printing as text or PostScript, we have
1676 to create a print stream. */
1677 if (output_action == WRITE_TEXT) {
1678 switch (print_format) {
1681 print_stream = print_stream_text_stdio_new(stdout);
1685 print_stream = print_stream_ps_stdio_new(stdout);
1689 g_assert_not_reached();
1694 /* We have to dissect each packet if:
1696 we're printing information about each packet;
1698 we're using a read filter on the packets;
1700 we're using any taps that need dissection. */
1701 do_dissection = print_packet_info || rfcode || tap_listeners_require_dissection();
1705 * We're reading a capture file.
1709 * Immediately relinquish any special privileges we have; we must not
1710 * be allowed to read any capture files the user running TShark
1713 relinquish_special_privs_perm();
1714 print_current_user();
1716 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1721 /* Set timestamp precision; there should arguably be a command-line
1722 option to let the user set this. */
1723 switch(wtap_file_tsprecision(cfile.wth)) {
1724 case(WTAP_FILE_TSPREC_SEC):
1725 timestamp_set_precision(TS_PREC_AUTO_SEC);
1727 case(WTAP_FILE_TSPREC_DSEC):
1728 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1730 case(WTAP_FILE_TSPREC_CSEC):
1731 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1733 case(WTAP_FILE_TSPREC_MSEC):
1734 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1736 case(WTAP_FILE_TSPREC_USEC):
1737 timestamp_set_precision(TS_PREC_AUTO_USEC);
1739 case(WTAP_FILE_TSPREC_NSEC):
1740 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1743 g_assert_not_reached();
1746 /* Process the packets in the file */
1749 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
1750 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1751 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1753 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
1756 CATCH(OutOfMemoryError) {
1760 "Sorry, but TShark has to terminate now!\n"
1762 "Some infos / workarounds can be found at:\n"
1763 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
1768 /* We still dump out the results of taps, etc., as we might have
1769 read some packets; however, we exit with an error status. */
1773 /* No capture file specified, so we're supposed to do a live capture
1774 (or get a list of link-layer types for a live capture device);
1775 do we have support for live captures? */
1782 cmdarg_err("WinPcap couldn't be found.");
1783 detailed_err = cant_load_winpcap_err("TShark");
1784 cmdarg_err_cont("%s", detailed_err);
1785 g_free(detailed_err);
1790 /* trim the interface name and exit if that failed */
1791 if (!capture_opts_trim_iface(&global_capture_opts,
1792 (prefs_p->capture_device) ? get_if_name(prefs_p->capture_device) : NULL)) {
1796 /* if requested, list the link layer types and exit */
1797 if (list_link_layer_types) {
1799 interface_options interface_opts;
1801 /* Get the list of link-layer types for the capture devices. */
1802 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1803 if_capabilities_t *caps;
1805 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1806 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str);
1808 cmdarg_err("%s", err_str);
1812 if (caps->data_link_types == NULL) {
1813 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
1816 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
1817 free_if_capabilities(caps);
1822 if (print_packet_info) {
1823 if (!write_preamble(NULL)) {
1824 show_print_file_io_error(errno);
1827 } else if (!quiet) {
1829 * We're not printing information for each packet, and the user
1830 * didn't ask us not to print a count of packets as they arrive,
1831 * so print that count so the user knows that packets are arriving.
1833 * XXX - what if the user wants to do a live capture, doesn't want
1834 * to save it to a file, doesn't want information printed for each
1835 * packet, does want some "-z" statistic, and wants packet counts
1836 * so they know whether they're seeing any packets?
1838 print_packet_counts = TRUE;
1841 /* For now, assume libpcap gives microsecond precision. */
1842 timestamp_set_precision(TS_PREC_AUTO_USEC);
1845 * XXX - this returns FALSE if an error occurred, but it also
1846 * returns FALSE if the capture stops because a time limit
1847 * was reached (and possibly other limits), so we can't assume
1848 * it means an error.
1850 * The capture code is a bit twisty, so it doesn't appear to
1851 * be an easy fix. We just ignore the return value for now.
1852 * Instead, pass on the exit status from the capture child.
1855 exit_status = global_capture_opts.fork_child_status;
1857 if (print_packet_info) {
1858 if (!write_finale()) {
1860 show_print_file_io_error(err);
1864 /* No - complain. */
1865 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1872 if (cfile.frames != NULL) {
1873 free_frame_data_sequence(cfile.frames);
1874 cfile.frames = NULL;
1877 draw_tap_listeners(TRUE);
1878 funnel_dump_all_text_windows();
1881 output_fields_free(output_fields);
1882 output_fields = NULL;
1887 /*#define USE_BROKEN_G_MAIN_LOOP*/
1889 #ifdef USE_BROKEN_G_MAIN_LOOP
1892 gboolean loop_running = FALSE;
1894 guint32 packet_count = 0;
1897 /* XXX - move to the right position / file */
1898 /* read from a pipe (callback) */
1899 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1901 typedef struct pipe_input_tag {
1905 pipe_input_cb_t input_cb;
1906 guint pipe_input_id;
1908 GMutex *callback_running;
1912 static pipe_input_t pipe_input;
1915 /* The timer has expired, see if there's stuff to read from the pipe,
1916 if so, do the callback */
1918 pipe_timer_cb(gpointer data)
1922 gboolean result, result1;
1924 pipe_input_t *pipe_input_p = data;
1925 gint iterations = 0;
1927 g_mutex_lock (pipe_input_p->callback_running);
1929 /* try to read data from the pipe only 5 times, to avoid blocking */
1930 while(iterations < 5) {
1931 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1933 /* Oddly enough although Named pipes don't work on win9x,
1934 PeekNamedPipe does !!! */
1935 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
1936 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1938 /* Get the child process exit status */
1939 result1 = GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
1942 /* If the Peek returned an error, or there are bytes to be read
1943 or the childwatcher thread has terminated then call the normal
1945 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1947 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1949 /* And call the real handler */
1950 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
1951 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1952 /* pipe closed, return false so that the timer is stopped */
1953 g_mutex_unlock (pipe_input_p->callback_running);
1958 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1959 /* No data, stop now */
1966 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1968 g_mutex_unlock (pipe_input_p->callback_running);
1970 /* we didn't stopped the timer, so let it run */
1977 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1980 pipe_input.source = source;
1981 pipe_input.child_process = child_process;
1982 pipe_input.user_data = user_data;
1983 pipe_input.input_cb = input_cb;
1986 #if GLIB_CHECK_VERSION(2,31,0)
1987 pipe_input.callback_running = g_malloc(sizeof(GMutex));
1988 g_mutex_init(pipe_input.callback_running);
1990 pipe_input.callback_running = g_mutex_new();
1992 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1993 do this but that doesn't cover all win32 platforms. GTK can do
1994 this but doesn't seem to work over processes. Attempt to do
1995 something similar here, start a timer and check for data on every
1997 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1998 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2009 GString *str = g_string_new("");
2010 #ifdef USE_TSHARK_SELECT
2014 struct sigaction action, oldaction;
2018 * XXX - dropping privileges is still required, until code cleanup is done
2020 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2021 * when it's done, we don't need special privileges to run tshark at all,
2022 * therefore we don't need to drop these privileges
2023 * The only thing we might want to keep is a warning if tshark is run as root,
2024 * as it's no longer necessary and potentially dangerous.
2026 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2027 * We've opened the capture device, so we shouldn't need any special
2028 * privileges any more; relinquish those privileges.
2030 * XXX - if we have saved set-user-ID support, we should give up those
2031 * privileges immediately, and then reclaim them long enough to get
2032 * a list of network interfaces and to open one, and then give them
2033 * up again, so that stuff we do while processing the argument list,
2034 * reading the user's preferences, loading and starting plugins
2035 * (especially *user* plugins), etc. is done with the user's privileges,
2036 * not special privileges.
2038 relinquish_special_privs_perm();
2039 print_current_user();
2041 /* Cleanup all data structures used for dissection. */
2042 cleanup_dissection();
2043 /* Initialize all data structures used for dissection. */
2047 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2048 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2050 /* Catch SIGINT and SIGTERM and, if we get either of them,
2051 clean up and exit. If SIGHUP isn't being ignored, catch
2052 it too and, if we get it, clean up and exit.
2054 We restart any read that was in progress, so that it doesn't
2055 disrupt reading from the sync pipe. The signal handler tells
2056 the capture child to finish; it will report that it finished,
2057 or will exit abnormally, so we'll stop reading from the sync
2058 pipe, pick up the exit status, and quit. */
2059 action.sa_handler = capture_cleanup;
2060 action.sa_flags = SA_RESTART;
2061 sigemptyset(&action.sa_mask);
2062 sigaction(SIGTERM, &action, NULL);
2063 sigaction(SIGINT, &action, NULL);
2064 sigaction(SIGHUP, NULL, &oldaction);
2065 if (oldaction.sa_handler == SIG_DFL)
2066 sigaction(SIGHUP, &action, NULL);
2069 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2070 quiet mode, report the number of packets we've captured.
2072 Again, restart any read that was in progress, so that it doesn't
2073 disrupt reading from the sync pipe. */
2074 action.sa_handler = report_counts_siginfo;
2075 action.sa_flags = SA_RESTART;
2076 sigemptyset(&action.sa_mask);
2077 sigaction(SIGINFO, &action, NULL);
2078 #endif /* SIGINFO */
2081 global_capture_opts.state = CAPTURE_PREPARING;
2083 /* Let the user know which interfaces were chosen. */
2084 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2085 interface_options interface_opts;
2087 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2088 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2089 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2090 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2093 if (global_capture_opts.ifaces->len < 2) {
2095 if (global_capture_opts.ifaces->len < 4) {
2097 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2098 interface_options interface_opts;
2100 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2102 if (global_capture_opts.ifaces->len > 2) {
2103 g_string_append_printf(str, ",");
2105 g_string_append_printf(str, " ");
2106 if (i == global_capture_opts.ifaces->len - 1) {
2107 g_string_append_printf(str, "and ");
2110 g_string_append_printf(str, "%s", interface_opts.descr);
2113 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2115 fprintf(stderr, "Capturing on %s\n", str->str);
2116 g_string_free(str, TRUE);
2118 ret = sync_pipe_start(&global_capture_opts);
2123 /* the actual capture loop
2125 * XXX - glib doesn't seem to provide any event based loop handling.
2127 * XXX - for whatever reason,
2128 * calling g_main_loop_new() ends up in 100% cpu load.
2130 * But that doesn't matter: in UNIX we can use select() to find an input
2131 * source with something to do.
2133 * But that doesn't matter because we're in a CLI (that doesn't need to
2134 * update a GUI or something at the same time) so it's OK if we block
2135 * trying to read from the pipe.
2137 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2138 * wrong (but I leave it there in case I am...).
2141 #ifdef USE_TSHARK_SELECT
2143 FD_SET(pipe_input.source, &readfds);
2146 loop_running = TRUE;
2150 while (loop_running)
2152 #ifdef USE_TSHARK_SELECT
2153 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2159 } else if (ret == 1) {
2161 /* Call the real handler */
2162 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2163 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2166 #ifdef USE_TSHARK_SELECT
2171 CATCH(OutOfMemoryError) {
2175 "Sorry, but TShark has to terminate now!\n"
2177 "Some infos / workarounds can be found at:\n"
2178 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2186 /* XXX - move the call to main_window_update() out of capture_sync.c */
2187 /* dummy for capture_sync.c to make linker happy */
2188 void main_window_update(void)
2192 /* capture child detected an error */
2194 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
2196 cmdarg_err("%s", error_msg);
2197 cmdarg_err_cont("%s", secondary_error_msg);
2201 /* capture child detected an capture filter related error */
2203 capture_input_cfilter_error_message(capture_options *capture_opts, guint i, char *error_message)
2205 dfilter_t *rfcode = NULL;
2206 interface_options interface_opts;
2208 g_assert(i < capture_opts->ifaces->len);
2209 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2211 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2213 "Invalid capture filter \"%s\" for interface %s!\n"
2215 "That string looks like a valid display filter; however, it isn't a valid\n"
2216 "capture filter (%s).\n"
2218 "Note that display filters and capture filters don't have the same syntax,\n"
2219 "so you can't use most display filter expressions as capture filters.\n"
2221 "See the User's Guide for a description of the capture filter syntax.",
2222 interface_opts.cfilter, interface_opts.descr, error_message);
2223 dfilter_free(rfcode);
2226 "Invalid capture filter \"%s\" for interface %s!\n"
2228 "That string isn't a valid capture filter (%s).\n"
2229 "See the User's Guide for a description of the capture filter syntax.",
2230 interface_opts.cfilter, interface_opts.descr, error_message);
2235 /* capture child tells us we have a new (or the first) capture file */
2237 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
2239 gboolean is_tempfile;
2242 if(capture_opts->state == CAPTURE_PREPARING) {
2243 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2245 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2247 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
2249 /* free the old filename */
2250 if (capture_opts->save_file != NULL) {
2252 /* we start a new capture file, close the old one (if we had one before) */
2253 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
2254 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
2255 wtap_close(((capture_file *) capture_opts->cf)->wth);
2257 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
2260 g_free(capture_opts->save_file);
2261 is_tempfile = FALSE;
2263 /* we didn't had a save_file before, must be a tempfile */
2267 /* save the new filename */
2268 capture_opts->save_file = g_strdup(new_file);
2270 /* if we are in real-time mode, open the new file now */
2272 /* Attempt to open the capture file and set up to read from it. */
2273 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
2277 /* Don't unlink (delete) the save file - leave it around,
2278 for debugging purposes. */
2279 g_free(capture_opts->save_file);
2280 capture_opts->save_file = NULL;
2285 capture_opts->state = CAPTURE_RUNNING;
2291 /* capture child tells us we have new packets to read */
2293 capture_input_new_packets(capture_options *capture_opts, int to_read)
2299 capture_file *cf = capture_opts->cf;
2300 gboolean filtering_tap_listeners;
2305 * Prevent a SIGINFO handler from writing to the standard error while
2306 * we're doing so or writing to the standard output; instead, have it
2307 * just set a flag telling us to print that information when we're done.
2310 #endif /* SIGINFO */
2312 /* Do we have any tap listeners with filters? */
2313 filtering_tap_listeners = have_filtering_tap_listeners();
2315 /* Get the union of the flags for all tap listeners. */
2316 tap_flags = union_of_tap_listener_flags();
2319 while (to_read-- && cf->wth) {
2320 wtap_cleareof(cf->wth);
2321 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2323 /* read from file failed, tell the capture child to stop */
2324 sync_pipe_stop(capture_opts);
2325 wtap_close(cf->wth);
2328 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2329 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2330 filtering_tap_listeners, tap_flags);
2333 /* packet successfully read and gone through the "Read Filter" */
2339 * Dumpcap's doing all the work; we're not doing any dissection.
2340 * Count all the packets it wrote.
2342 packet_count += to_read;
2345 if (print_packet_counts) {
2346 /* We're printing packet counts. */
2347 if (packet_count != 0) {
2348 fprintf(stderr, "\r%u ", packet_count);
2349 /* stderr could be line buffered */
2356 * Allow SIGINFO handlers to write.
2361 * If a SIGINFO handler asked us to write out capture counts, do so.
2365 #endif /* SIGINFO */
2371 if (!print_packet_counts) {
2372 /* Report the count only if we aren't printing a packet count
2373 as packets arrive. */
2374 fprintf(stderr, "%u packet%s captured\n", packet_count,
2375 plurality(packet_count, "", "s"));
2378 infoprint = FALSE; /* we just reported it */
2379 #endif /* SIGINFO */
2384 report_counts_siginfo(int signum _U_)
2386 int sav_errno = errno;
2387 /* If we've been told to delay printing, just set a flag asking
2388 that we print counts (if we're supposed to), otherwise print
2389 the count of packets captured (if we're supposed to). */
2396 #endif /* SIGINFO */
2399 /* capture child detected any packet drops? */
2401 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2403 if (print_packet_counts) {
2404 /* We're printing packet counts to stderr.
2405 Send a newline so that we move to the line after the packet count. */
2406 fprintf(stderr, "\n");
2410 /* We're printing packet counts to stderr.
2411 Send a newline so that we move to the line after the packet count. */
2412 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2418 * Capture child closed its side of the pipe, report any error and
2419 * do the required cleanup.
2422 capture_input_closed(capture_options *capture_opts, gchar *msg)
2425 fprintf(stderr, "tshark: %s\n", msg);
2429 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2430 wtap_close(((capture_file *) capture_opts->cf)->wth);
2431 if(((capture_file *) capture_opts->cf)->user_saved == FALSE) {
2432 ws_unlink(((capture_file *) capture_opts->cf)->filename);
2435 #ifdef USE_BROKEN_G_MAIN_LOOP
2436 /*g_main_loop_quit(loop);*/
2439 loop_running = FALSE;
2448 capture_cleanup(DWORD ctrltype _U_)
2450 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2451 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2452 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2453 like SIGTERM at least when the machine's shutting down.
2455 For now, we handle them all as indications that we should clean up
2456 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2459 We must return TRUE so that no other handler - such as one that would
2460 terminate the process - gets called.
2462 XXX - for some reason, typing ^C to TShark, if you run this in
2463 a Cygwin console window in at least some versions of Cygwin,
2464 causes TShark to terminate immediately; this routine gets
2465 called, but the main loop doesn't get a chance to run and
2466 exit cleanly, at least if this is compiled with Microsoft Visual
2467 C++ (i.e., it's a property of the Cygwin console window or Bash;
2468 it happens if TShark is not built with Cygwin - for all I know,
2469 building it with Cygwin may make the problem go away). */
2471 /* tell the capture child to stop */
2472 sync_pipe_stop(&global_capture_opts);
2474 /* don't stop our own loop already here, otherwise status messages and
2475 * cleanup wouldn't be done properly. The child will indicate the stop of
2476 * everything by calling capture_input_closed() later */
2482 capture_cleanup(int signum _U_)
2484 /* tell the capture child to stop */
2485 sync_pipe_stop(&global_capture_opts);
2487 /* don't stop our own loop already here, otherwise status messages and
2488 * cleanup wouldn't be done properly. The child will indicate the stop of
2489 * everything by calling capture_input_closed() later */
2492 #endif /* HAVE_LIBPCAP */
2495 process_packet_first_pass(capture_file *cf,
2496 gint64 offset, const struct wtap_pkthdr *whdr,
2497 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2504 /* The frame number of this packet is one more than the count of
2505 frames in this packet. */
2506 framenum = cf->count + 1;
2508 /* If we're not running a display filter and we're not printing any
2509 packet information, we don't need to do a dissection. This means
2510 that all packets can be marked as 'passed'. */
2513 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2515 /* If we're going to print packet information, or we're going to
2516 run a read filter, or we're going to process taps, set up to
2517 do a dissection and do so. */
2518 if (do_dissection) {
2519 if (gbl_resolv_flags)
2520 /* Grab any resolved addresses */
2521 host_name_lookup_process(NULL);
2523 /* The protocol tree will be "visible", i.e., printed, only if we're
2524 printing packet details, which is true if we're printing stuff
2525 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2527 epan_dissect_init(&edt, FALSE, FALSE);
2529 /* If we're running a read filter, prime the epan_dissect_t with that
2532 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2534 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2535 &first_ts, &prev_dis_ts, &prev_cap_ts);
2537 epan_dissect_run(&edt, pseudo_header, pd, &fdlocal, NULL);
2539 /* Run the read filter if we have one. */
2541 passed = dfilter_apply_edt(cf->rfcode, &edt);
2545 frame_data_set_after_dissect(&fdlocal, &cum_bytes, &prev_dis_ts);
2546 frame_data_sequence_add(cf->frames, &fdlocal);
2551 epan_dissect_cleanup(&edt);
2557 process_packet_second_pass(capture_file *cf, frame_data *fdata,
2558 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2559 gboolean filtering_tap_listeners, guint tap_flags)
2561 gboolean create_proto_tree;
2566 /* If we're not running a display filter and we're not printing any
2567 packet information, we don't need to do a dissection. This means
2568 that all packets can be marked as 'passed'. */
2571 /* If we're going to print packet information, or we're going to
2572 run a read filter, or we're going to process taps, set up to
2573 do a dissection and do so. */
2574 if (do_dissection) {
2575 if (gbl_resolv_flags)
2576 /* Grab any resolved addresses */
2577 host_name_lookup_process(NULL);
2579 if (cf->rfcode || verbose || filtering_tap_listeners ||
2580 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2581 create_proto_tree = TRUE;
2583 create_proto_tree = FALSE;
2585 /* The protocol tree will be "visible", i.e., printed, only if we're
2586 printing packet details, which is true if we're printing stuff
2587 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2589 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2591 /* If we're running a read filter, prime the epan_dissect_t with that
2594 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2596 col_custom_prime_edt(&edt, &cf->cinfo);
2598 tap_queue_init(&edt);
2600 /* We only need the columns if either
2602 1) some tap needs the columns
2606 2) we're printing packet info but we're *not* verbose; in verbose
2607 mode, we print the protocol tree, not the protocol summary. */
2608 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2613 epan_dissect_run(&edt, pseudo_header, pd, fdata, cinfo);
2615 tap_push_tapped_queue(&edt);
2617 /* Run the read filter if we have one. */
2619 passed = dfilter_apply_edt(cf->rfcode, &edt);
2623 /* Process this packet. */
2624 if (print_packet_info) {
2625 /* We're printing packet information; print the information for
2628 print_packet(cf, &edt);
2630 print_packet(cf, NULL);
2632 /* The ANSI C standard does not appear to *require* that a line-buffered
2633 stream be flushed to the host environment whenever a newline is
2634 written, it just says that, on such a stream, characters "are
2635 intended to be transmitted to or from the host environment as a
2636 block when a new-line character is encountered".
2638 The Visual C++ 6.0 C implementation doesn't do what is intended;
2639 even if you set a stream to be line-buffered, it still doesn't
2640 flush the buffer at the end of every line.
2642 So, if the "-l" flag was specified, we flush the standard output
2643 at the end of a packet. This will do the right thing if we're
2644 printing packet summary lines, and, as we print the entire protocol
2645 tree for a single packet without waiting for anything to happen,
2646 it should be as good as line-buffered mode if we're printing
2647 protocol trees. (The whole reason for the "-l" flag in either
2648 tcpdump or TShark is to allow the output of a live capture to
2649 be piped to a program or script and to have that script see the
2650 information for the packet as soon as it's printed, rather than
2651 having to wait until a standard I/O buffer fills up. */
2655 if (ferror(stdout)) {
2656 show_print_file_io_error(errno);
2662 if (do_dissection) {
2663 epan_dissect_cleanup(&edt);
2669 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2670 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
2673 int snapshot_length;
2676 gchar *err_info = NULL;
2678 char *save_file_string = NULL;
2679 gboolean filtering_tap_listeners;
2682 #ifdef PCAP_NG_DEFAULT
2683 linktype = WTAP_ENCAP_PER_PACKET;
2685 linktype = wtap_file_encap(cf->wth);
2687 if (save_file != NULL) {
2688 /* Get a string that describes what we're writing to */
2689 save_file_string = output_file_description(save_file);
2691 /* Set up to write to the capture file. */
2692 snapshot_length = wtap_snapshot_length(cf->wth);
2693 if (snapshot_length == 0) {
2694 /* Snapshot length of input file not known. */
2695 snapshot_length = WTAP_MAX_PACKET_SIZE;
2697 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2698 FALSE /* compressed */, &err);
2701 /* We couldn't set up to write to the capture file. */
2704 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2705 cmdarg_err("Capture files can't be written in that format.");
2708 case WTAP_ERR_UNSUPPORTED_ENCAP:
2709 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2710 cmdarg_err("The capture file being read can't be written in "
2711 "the format \"%s\".", wtap_encap_short_string(linktype));
2714 case WTAP_ERR_CANT_OPEN:
2715 cmdarg_err("The %s couldn't be created for some "
2716 "unknown reason.", save_file_string);
2719 case WTAP_ERR_SHORT_WRITE:
2720 cmdarg_err("A full header couldn't be written to the %s.",
2725 cmdarg_err("The %s could not be created: %s.", save_file_string,
2726 wtap_strerror(err));
2732 if (print_packet_info) {
2733 if (!write_preamble(cf)) {
2735 show_print_file_io_error(err);
2742 if (pdh && out_file_name_res) {
2743 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
2744 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
2745 wtap_file_type_short_string(out_file_type));
2749 /* Do we have any tap listeners with filters? */
2750 filtering_tap_listeners = have_filtering_tap_listeners();
2752 /* Get the union of the flags for all tap listeners. */
2753 tap_flags = union_of_tap_listener_flags();
2755 if (perform_two_pass_analysis) {
2758 int old_max_packet_count = max_packet_count;
2760 /* Allocate a frame_data_sequence for all the frames. */
2761 cf->frames = new_frame_data_sequence();
2763 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2764 if (process_packet_first_pass(cf, data_offset, wtap_phdr(cf->wth),
2765 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2766 /* Stop reading if we have the maximum number of packets;
2767 * When the -c option has not been used, max_packet_count
2768 * starts at 0, which practically means, never stop reading.
2769 * (unless we roll over max_packet_count ?)
2771 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2772 err = 0; /* This is not an error */
2778 /* Close the sequential I/O side, to free up memory it requires. */
2779 wtap_sequential_close(cf->wth);
2781 /* Allow the protocol dissectors to free up memory that they
2782 * don't need after the sequential run-through of the packets. */
2783 postseq_cleanup_all_protocols();
2785 max_packet_count = old_max_packet_count;
2787 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
2788 fdata = frame_data_sequence_find(cf->frames, framenum);
2789 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->pseudo_header,
2790 cf->pd, fdata->cap_len, &err, &err_info)) {
2791 if (process_packet_second_pass(cf, fdata,
2792 &cf->pseudo_header, cf->pd,
2793 filtering_tap_listeners, tap_flags)) {
2794 /* Either there's no read filtering or this packet passed the
2795 filter, so, if we're writing to a capture file, write
2798 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2799 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2801 /* Error writing to a capture file */
2802 show_capture_file_io_error(save_file, err, FALSE);
2803 wtap_dump_close(pdh, &err);
2807 /* Stop reading if we have the maximum number of packets;
2808 * When the -c option has not been used, max_packet_count
2809 * starts at 0, which practically means, never stop reading.
2810 * (unless we roll over max_packet_count ?)
2812 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2813 err = 0; /* This is not an error */
2821 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2822 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2823 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2824 filtering_tap_listeners, tap_flags)) {
2825 /* Either there's no read filtering or this packet passed the
2826 filter, so, if we're writing to a capture file, write
2829 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2830 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2832 /* Error writing to a capture file */
2833 show_capture_file_io_error(save_file, err, FALSE);
2834 wtap_dump_close(pdh, &err);
2838 /* Stop reading if we have the maximum number of packets;
2839 * When the -c option has not been used, max_packet_count
2840 * starts at 0, which practically means, never stop reading.
2841 * (unless we roll over max_packet_count ?)
2843 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2844 err = 0; /* This is not an error */
2853 * Print a message noting that the read failed somewhere along the line.
2855 * If we're printing packet data, and the standard output and error are
2856 * going to the same place, flush the standard output, so everything
2857 * buffered up is written, and then print a newline to the standard error
2858 * before printing the error message, to separate it from the packet
2859 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
2860 * the _fstat() documentation at Microsoft doesn't indicate whether
2861 * st_ino is even supported.)
2864 if (print_packet_info) {
2865 struct stat stat_stdout, stat_stderr;
2867 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
2868 if (stat_stdout.st_dev == stat_stderr.st_dev &&
2869 stat_stdout.st_ino == stat_stderr.st_ino) {
2871 fprintf(stderr, "\n");
2878 case WTAP_ERR_UNSUPPORTED_ENCAP:
2879 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2880 cf->filename, err_info);
2884 case WTAP_ERR_CANT_READ:
2885 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
2889 case WTAP_ERR_SHORT_READ:
2890 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
2894 case WTAP_ERR_BAD_RECORD:
2895 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
2896 cf->filename, err_info);
2900 case WTAP_ERR_DECOMPRESS:
2901 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
2902 "(%s)", cf->filename, err_info);
2906 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
2907 cf->filename, wtap_strerror(err));
2910 if (save_file != NULL) {
2911 /* Now close the capture file. */
2912 if (!wtap_dump_close(pdh, &err))
2913 show_capture_file_io_error(save_file, err, TRUE);
2916 if (save_file != NULL) {
2917 /* Now close the capture file. */
2918 if (!wtap_dump_close(pdh, &err))
2919 show_capture_file_io_error(save_file, err, TRUE);
2921 if (print_packet_info) {
2922 if (!write_finale()) {
2924 show_print_file_io_error(err);
2931 wtap_close(cf->wth);
2934 g_free(save_file_string);
2940 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2941 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2942 gboolean filtering_tap_listeners, guint tap_flags)
2945 gboolean create_proto_tree;
2950 /* Count this packet. */
2953 /* If we're not running a display filter and we're not printing any
2954 packet information, we don't need to do a dissection. This means
2955 that all packets can be marked as 'passed'. */
2958 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
2960 /* If we're going to print packet information, or we're going to
2961 run a read filter, or we're going to process taps, set up to
2962 do a dissection and do so. */
2963 if (do_dissection) {
2964 if (print_packet_info && gbl_resolv_flags)
2965 /* Grab any resolved addresses */
2966 host_name_lookup_process(NULL);
2968 if (cf->rfcode || verbose || filtering_tap_listeners ||
2969 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2970 create_proto_tree = TRUE;
2972 create_proto_tree = FALSE;
2974 /* The protocol tree will be "visible", i.e., printed, only if we're
2975 printing packet details, which is true if we're printing stuff
2976 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2978 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2980 /* If we're running a read filter, prime the epan_dissect_t with that
2983 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2985 col_custom_prime_edt(&edt, &cf->cinfo);
2987 tap_queue_init(&edt);
2989 /* We only need the columns if either
2991 1) some tap needs the columns
2995 2) we're printing packet info but we're *not* verbose; in verbose
2996 mode, we print the protocol tree, not the protocol summary. */
2997 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
3002 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3003 &first_ts, &prev_dis_ts, &prev_cap_ts);
3005 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
3007 tap_push_tapped_queue(&edt);
3009 /* Run the read filter if we have one. */
3011 passed = dfilter_apply_edt(cf->rfcode, &edt);
3015 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
3017 /* Process this packet. */
3018 if (print_packet_info) {
3019 /* We're printing packet information; print the information for
3022 print_packet(cf, &edt);
3024 print_packet(cf, NULL);
3026 /* The ANSI C standard does not appear to *require* that a line-buffered
3027 stream be flushed to the host environment whenever a newline is
3028 written, it just says that, on such a stream, characters "are
3029 intended to be transmitted to or from the host environment as a
3030 block when a new-line character is encountered".
3032 The Visual C++ 6.0 C implementation doesn't do what is intended;
3033 even if you set a stream to be line-buffered, it still doesn't
3034 flush the buffer at the end of every line.
3036 So, if the "-l" flag was specified, we flush the standard output
3037 at the end of a packet. This will do the right thing if we're
3038 printing packet summary lines, and, as we print the entire protocol
3039 tree for a single packet without waiting for anything to happen,
3040 it should be as good as line-buffered mode if we're printing
3041 protocol trees. (The whole reason for the "-l" flag in either
3042 tcpdump or TShark is to allow the output of a live capture to
3043 be piped to a program or script and to have that script see the
3044 information for the packet as soon as it's printed, rather than
3045 having to wait until a standard I/O buffer fills up. */
3049 if (ferror(stdout)) {
3050 show_print_file_io_error(errno);
3056 if (do_dissection) {
3057 epan_dissect_cleanup(&edt);
3058 frame_data_cleanup(&fdata);
3064 write_preamble(capture_file *cf)
3066 switch (output_action) {
3069 return print_preamble(print_stream, cf ? cf->filename : NULL);
3073 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3075 write_psml_preamble(stdout);
3076 return !ferror(stdout);
3079 write_fields_preamble(output_fields, stdout);
3080 return !ferror(stdout);
3083 g_assert_not_reached();
3089 get_line_buf(size_t len)
3091 static char *line_bufp = NULL;
3092 static size_t line_buf_len = 256;
3093 size_t new_line_buf_len;
3095 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3096 new_line_buf_len *= 2)
3098 if (line_bufp == NULL) {
3099 line_buf_len = new_line_buf_len;
3100 line_bufp = g_malloc(line_buf_len + 1);
3102 if (new_line_buf_len > line_buf_len) {
3103 line_buf_len = new_line_buf_len;
3104 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
3111 print_columns(capture_file *cf)
3118 line_bufp = get_line_buf(256);
3121 for (i = 0; i < cf->cinfo.num_cols; i++) {
3122 /* Skip columns not marked as visible. */
3123 if (!get_column_visible(i))
3125 switch (cf->cinfo.col_fmt[i]) {
3129 * Don't print this if we're doing a live capture from a network
3130 * interface - if we're doing a live capture, you won't be
3131 * able to look at the capture in the future (it's not being
3132 * saved anywhere), so the frame numbers are unlikely to be
3135 * (XXX - it might be nice to be able to save and print at
3136 * the same time, sort of like an "Update list of packets
3137 * in real time" capture in Wireshark.)
3139 if (global_capture_opts.ifaces->len > 0)
3142 column_len = strlen(cf->cinfo.col_data[i]);
3145 line_bufp = get_line_buf(buf_offset + column_len);
3146 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%3s", cf->cinfo.col_data[i]);
3152 case COL_ABS_DATE_TIME:
3154 case COL_UTC_DATE_TIME: /* XXX - wider */
3155 column_len = strlen(cf->cinfo.col_data[i]);
3156 if (column_len < 10)
3158 line_bufp = get_line_buf(buf_offset + column_len);
3159 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%10s", cf->cinfo.col_data[i]);
3165 case COL_DEF_DL_SRC:
3166 case COL_RES_DL_SRC:
3167 case COL_UNRES_DL_SRC:
3168 case COL_DEF_NET_SRC:
3169 case COL_RES_NET_SRC:
3170 case COL_UNRES_NET_SRC:
3171 column_len = strlen(cf->cinfo.col_data[i]);
3172 if (column_len < 12)
3174 line_bufp = get_line_buf(buf_offset + column_len);
3175 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%12s", cf->cinfo.col_data[i]);
3181 case COL_DEF_DL_DST:
3182 case COL_RES_DL_DST:
3183 case COL_UNRES_DL_DST:
3184 case COL_DEF_NET_DST:
3185 case COL_RES_NET_DST:
3186 case COL_UNRES_NET_DST:
3187 column_len = strlen(cf->cinfo.col_data[i]);
3188 if (column_len < 12)
3190 line_bufp = get_line_buf(buf_offset + column_len);
3191 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%-12s", cf->cinfo.col_data[i]);
3195 column_len = strlen(cf->cinfo.col_data[i]);
3196 line_bufp = get_line_buf(buf_offset + column_len);
3197 g_strlcat(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len + 1);
3200 buf_offset += column_len;
3201 if (i != cf->cinfo.num_cols - 1) {
3203 * This isn't the last column, so we need to print a
3204 * separator between this column and the next.
3206 * If we printed a network source and are printing a
3207 * network destination of the same type next, separate
3208 * them with " -> "; if we printed a network destination
3209 * and are printing a network source of the same type
3210 * next, separate them with " <- "; otherwise separate them
3213 * We add enough space to the buffer for " <- " or " -> ",
3214 * even if we're only adding " ".
3216 line_bufp = get_line_buf(buf_offset + 4);
3217 switch (cf->cinfo.col_fmt[i]) {
3222 switch (cf->cinfo.col_fmt[i + 1]) {
3227 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3232 g_strlcat(line_bufp + buf_offset, " ", 5);
3238 case COL_DEF_DL_SRC:
3239 case COL_RES_DL_SRC:
3240 case COL_UNRES_DL_SRC:
3241 switch (cf->cinfo.col_fmt[i + 1]) {
3243 case COL_DEF_DL_DST:
3244 case COL_RES_DL_DST:
3245 case COL_UNRES_DL_DST:
3246 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3251 g_strlcat(line_bufp + buf_offset, " ", 5);
3257 case COL_DEF_NET_SRC:
3258 case COL_RES_NET_SRC:
3259 case COL_UNRES_NET_SRC:
3260 switch (cf->cinfo.col_fmt[i + 1]) {
3262 case COL_DEF_NET_DST:
3263 case COL_RES_NET_DST:
3264 case COL_UNRES_NET_DST:
3265 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3270 g_strlcat(line_bufp + buf_offset, " ", 5);
3279 switch (cf->cinfo.col_fmt[i + 1]) {
3284 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3289 g_strlcat(line_bufp + buf_offset, " ", 5);
3295 case COL_DEF_DL_DST:
3296 case COL_RES_DL_DST:
3297 case COL_UNRES_DL_DST:
3298 switch (cf->cinfo.col_fmt[i + 1]) {
3300 case COL_DEF_DL_SRC:
3301 case COL_RES_DL_SRC:
3302 case COL_UNRES_DL_SRC:
3303 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3308 g_strlcat(line_bufp + buf_offset, " ", 5);
3314 case COL_DEF_NET_DST:
3315 case COL_RES_NET_DST:
3316 case COL_UNRES_NET_DST:
3317 switch (cf->cinfo.col_fmt[i + 1]) {
3319 case COL_DEF_NET_SRC:
3320 case COL_RES_NET_SRC:
3321 case COL_UNRES_NET_SRC:
3322 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3327 g_strlcat(line_bufp + buf_offset, " ", 5);
3334 g_strlcat(line_bufp + buf_offset, " ", 5);
3340 return print_line(print_stream, 0, line_bufp);
3344 print_packet(capture_file *cf, epan_dissect_t *edt)
3346 print_args_t print_args;
3349 /* Print the information in the protocol tree. */
3350 switch (output_action) {
3353 print_args.to_file = TRUE;
3354 print_args.format = print_format;
3355 print_args.print_summary = !verbose;
3356 print_args.print_hex = verbose && print_hex;
3357 print_args.print_formfeed = FALSE;
3358 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
3360 /* init the packet range */
3361 packet_range_init(&print_args.range);
3363 if (!proto_tree_print(&print_args, edt, print_stream))
3366 /* "print_hex_data()" will put out a leading blank line, as well
3367 as a trailing one; print one here, to separate the packets,
3368 only if "print_hex_data()" won't be called. */
3369 if (!print_line(print_stream, 0, separator))
3375 proto_tree_write_pdml(edt, stdout);
3377 return !ferror(stdout);
3379 proto_tree_write_fields(output_fields, edt, stdout);
3381 return !ferror(stdout);
3384 /* Just fill in the columns. */
3385 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3387 /* Now print them. */
3388 switch (output_action) {
3391 if (!print_columns(cf))
3396 proto_tree_write_psml(edt, stdout);
3397 return !ferror(stdout);
3398 case WRITE_FIELDS: /*No non-verbose "fields" format */
3399 g_assert_not_reached();
3404 if (!print_hex_data(print_stream, edt))
3406 if (!print_line(print_stream, 0, ""))
3415 switch (output_action) {
3418 return print_finale(print_stream);
3422 write_pdml_finale(stdout);
3424 write_psml_finale(stdout);
3425 return !ferror(stdout);
3428 write_fields_finale(output_fields, stdout);
3429 return !ferror(stdout);
3432 g_assert_not_reached();
3438 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3442 char err_msg[2048+1];
3444 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3448 /* The open succeeded. Fill in the information for this file. */
3450 /* Cleanup all data structures used for dissection. */
3451 cleanup_dissection();
3452 /* Initialize all data structures used for dissection. */
3456 cf->f_datalen = 0; /* not used, but set it anyway */
3458 /* Set the file name because we need it to set the follow stream filter.
3459 XXX - is that still true? We need it for other reasons, though,
3461 cf->filename = g_strdup(fname);
3463 /* Indicate whether it's a permanent or temporary file. */
3464 cf->is_tempfile = is_tempfile;
3466 /* If it's a temporary capture buffer file, mark it as not saved. */
3467 cf->user_saved = !is_tempfile;
3469 cf->cd_t = wtap_file_type(cf->wth);
3471 cf->drops_known = FALSE;
3473 cf->snap = wtap_snapshot_length(cf->wth);
3474 if (cf->snap == 0) {
3475 /* Snapshot length not known. */
3476 cf->has_snap = FALSE;
3477 cf->snap = WTAP_MAX_PACKET_SIZE;
3479 cf->has_snap = TRUE;
3480 nstime_set_zero(&cf->elapsed_time);
3481 nstime_set_unset(&first_ts);
3482 nstime_set_unset(&prev_dis_ts);
3483 nstime_set_unset(&prev_cap_ts);
3485 cf->state = FILE_READ_IN_PROGRESS;
3487 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3488 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3493 g_snprintf(err_msg, sizeof err_msg,
3494 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3495 cmdarg_err("%s", err_msg);
3500 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3502 char *save_file_string;
3504 save_file_string = output_file_description(fname);
3509 cmdarg_err("Not all the packets could be written to the %s because there is "
3510 "no space left on the file system.",
3516 cmdarg_err("Not all the packets could be written to the %s because you are "
3517 "too close to, or over your disk quota.",
3522 case WTAP_ERR_CANT_CLOSE:
3523 cmdarg_err("The %s couldn't be closed for some unknown reason.",
3527 case WTAP_ERR_SHORT_WRITE:
3528 cmdarg_err("Not all the packets could be written to the %s.",
3534 cmdarg_err("The %s could not be closed: %s.", save_file_string,
3535 wtap_strerror(err));
3537 cmdarg_err("An error occurred while writing to the %s: %s.",
3538 save_file_string, wtap_strerror(err));
3542 g_free(save_file_string);
3546 show_print_file_io_error(int err)
3551 cmdarg_err("Not all the packets could be printed because there is "
3552 "no space left on the file system.");
3557 cmdarg_err("Not all the packets could be printed because you are "
3558 "too close to, or over your disk quota.");
3563 cmdarg_err("An error occurred while printing packets: %s.",
3570 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
3574 static char errmsg_errno[1024+1];
3577 /* Wiretap error. */
3580 case WTAP_ERR_NOT_REGULAR_FILE:
3581 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
3584 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
3585 /* Seen only when opening a capture file for reading. */
3586 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
3589 case WTAP_ERR_UNSUPPORTED:
3590 /* Seen only when opening a capture file for reading. */
3591 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3592 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
3595 errmsg = errmsg_errno;
3598 case WTAP_ERR_CANT_WRITE_TO_PIPE:
3599 /* Seen only when opening a capture file for writing. */
3600 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3601 "The file \"%%s\" is a pipe, and %s capture files can't be "
3602 "written to a pipe.", wtap_file_type_string(file_type));
3603 errmsg = errmsg_errno;
3606 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3607 /* Seen only when opening a capture file for writing. */
3608 errmsg = "TShark doesn't support writing capture files in that format.";
3611 case WTAP_ERR_UNSUPPORTED_ENCAP:
3613 errmsg = "TShark can't save this capture in that format.";
3615 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3616 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3619 errmsg = errmsg_errno;
3623 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3625 errmsg = "TShark can't save this capture in that format.";
3627 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3630 case WTAP_ERR_BAD_RECORD:
3631 /* Seen only when opening a capture file for reading. */
3632 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3633 "The file \"%%s\" appears to be damaged or corrupt.\n"
3636 errmsg = errmsg_errno;
3639 case WTAP_ERR_CANT_OPEN:
3641 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3643 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3646 case WTAP_ERR_SHORT_READ:
3647 errmsg = "The file \"%s\" appears to have been cut short"
3648 " in the middle of a packet or other data.";
3651 case WTAP_ERR_SHORT_WRITE:
3652 errmsg = "A full header couldn't be written to the file \"%s\".";
3655 case WTAP_ERR_DECOMPRESS:
3656 /* Seen only when opening a capture file for reading. */
3657 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3658 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
3661 errmsg = errmsg_errno;
3665 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3666 "The file \"%%s\" could not be %s: %s.",
3667 for_writing ? "created" : "opened",
3668 wtap_strerror(err));
3669 errmsg = errmsg_errno;
3673 errmsg = file_open_error_message(err, for_writing);
3678 * Open/create errors are reported with an console message in TShark.
3681 open_failure_message(const char *filename, int err, gboolean for_writing)
3683 fprintf(stderr, "tshark: ");
3684 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3685 fprintf(stderr, "\n");
3690 * General errors are reported with an console message in TShark.
3693 failure_message(const char *msg_format, va_list ap)
3695 fprintf(stderr, "tshark: ");
3696 vfprintf(stderr, msg_format, ap);
3697 fprintf(stderr, "\n");
3701 * Read errors are reported with an console message in TShark.
3704 read_failure_message(const char *filename, int err)
3706 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3707 filename, g_strerror(err));
3711 * Write errors are reported with an console message in TShark.
3714 write_failure_message(const char *filename, int err)
3716 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3717 filename, g_strerror(err));
3721 * Print to the standard error. This is a command-line tool, so there's
3722 * no need to pop up a console.
3725 vfprintf_stderr(const char *fmt, va_list ap)
3727 vfprintf(stderr, fmt, ap);
3731 fprintf_stderr(const char *fmt, ...)
3736 vfprintf_stderr(fmt, ap);
3741 * Report an error in command-line arguments.
3744 cmdarg_err(const char *fmt, ...)
3749 failure_message(fmt, ap);
3754 * Report additional information for an error in command-line arguments.
3757 cmdarg_err_cont(const char *fmt, ...)
3762 vfprintf(stderr, fmt, ap);
3763 fprintf(stderr, "\n");