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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 <wsutil/unicode-utils.h>
94 #include "capture_sync.h"
95 #endif /* HAVE_LIBPCAP */
97 #include <epan/funnel.h>
98 #include "capture_opts.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");
287 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
288 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
290 /*fprintf(output, "\n");*/
291 fprintf(output, "Output:\n");
292 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
293 fprintf(output, " (or to the standard output for \"-\")\n");
294 fprintf(output, " -C <config profile> start with specified configuration profile\n");
295 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
296 fprintf(output, " an empty \"-F\" option will list the file types\n");
297 fprintf(output, " -V add output of packet tree (Packet Details)\n");
298 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
299 fprintf(output, " separated\n");
300 fprintf(output, " -P print packets even when writing to a file\n");
301 fprintf(output, " -S <separator> the line separator to print between packets\n");
302 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
303 fprintf(output, " -T pdml|ps|psml|text|fields\n");
304 fprintf(output, " format of text output (def: text)\n");
305 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
306 fprintf(output, " this option can be repeated to print multiple fields\n");
307 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
308 fprintf(output, " header=y|n switch headers on and off\n");
309 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
310 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
311 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
312 fprintf(output, " aggregator\n");
313 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
314 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
315 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
316 fprintf(output, " -l flush standard output after each packet\n");
317 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
318 fprintf(output, " -W n Save extra information in the file, if supported.\n");
319 fprintf(output, " n = write network address resolution information\n");
320 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
321 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
323 fprintf(output, "\n");
324 fprintf(output, "Miscellaneous:\n");
325 fprintf(output, " -h display this help and exit\n");
326 fprintf(output, " -v display version info and exit\n");
327 fprintf(output, " -o <name>:<value> ... override preference setting\n");
328 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
329 fprintf(output, " -G [report] dump one of several available reports and exit\n");
330 fprintf(output, " default report=\"fields\"\n");
331 fprintf(output, " use \"-G ?\" for more help\n");
335 glossary_option_help(void)
341 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
343 fprintf(output, "\n");
344 fprintf(output, "Usage: tshark -G [report]\n");
345 fprintf(output, "\n");
346 fprintf(output, "Glossary table reports:\n");
347 fprintf(output, " -G [fields] dump glossary in original format and exit\n");
348 fprintf(output, " -G fields2 dump glossary in format 2 and exit\n");
349 fprintf(output, " -G fields3 dump glossary in format 3 and exit\n");
350 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
351 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
352 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
353 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
354 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
355 fprintf(output, "\n");
356 fprintf(output, "Preference reports:\n");
357 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
358 fprintf(output, " -G currentprefs dump current preferences and exit\n");
359 fprintf(output, "\n");
364 * For a dissector table, print on the stream described by output,
365 * its short name (which is what's used in the "-d" option) and its
369 display_dissector_table_names(const char *table_name, const char *ui_name,
372 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
376 * For a dissector handle, print on the stream described by output,
377 * the filter name (which is what's used in the "-d" option) and the full
378 * name for the protocol that corresponds to this handle.
381 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
384 const gchar* proto_filter_name;
385 const gchar* proto_ui_name;
387 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
389 if (proto_id != -1) {
390 proto_filter_name = proto_get_protocol_filter_name(proto_id);
391 proto_ui_name = proto_get_protocol_name(proto_id);
392 g_assert(proto_filter_name != NULL);
393 g_assert(proto_ui_name != NULL);
395 fprintf((FILE *)output, "\t%s (%s)\n",
402 * The protocol_name_search structure is used by find_protocol_name_func()
403 * to pass parameters and store results
405 struct protocol_name_search{
406 gchar *searched_name; /* Protocol filter name we are looking for */
407 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
408 guint nb_match; /* How many dissectors matched searched_name */
410 typedef struct protocol_name_search *protocol_name_search_t;
413 * This function parses all dissectors associated with a table to find the
414 * one whose protocol has the specified filter name. It is called
415 * as a reference function in a call to dissector_table_foreach_handle.
416 * The name we are looking for, as well as the results, are stored in the
417 * protocol_name_search struct pointed to by user_data.
418 * If called using dissector_table_foreach_handle, we actually parse the
419 * whole list of dissectors.
422 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
426 const gchar *protocol_filter_name;
427 protocol_name_search_t search_info;
431 search_info = (protocol_name_search_t)user_data;
433 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
434 if (proto_id != -1) {
435 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
436 g_assert(protocol_filter_name != NULL);
437 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
439 if (search_info->nb_match == 0) {
440 /* Record this handle only if this is the first match */
441 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
443 search_info->nb_match++;
449 * Print all layer type names supported.
450 * We send the output to the stream described by the handle output.
454 fprint_all_layer_types(FILE *output)
457 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
461 * Print all protocol names supported for a specific layer type.
462 * table_name contains the layer type name in which the search is performed.
463 * We send the output to the stream described by the handle output.
467 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
470 dissector_table_foreach_handle(table_name,
471 display_dissector_names,
476 * The function below parses the command-line parameters for the decode as
477 * feature (a string pointer by cl_param).
478 * It checks the format of the command-line, searches for a matching table
479 * and dissector. If a table/dissector match is not found, we display a
480 * summary of the available tables/dissectors (on stderr) and return FALSE.
481 * If everything is fine, we get the "Decode as" preference activated,
482 * then we return TRUE.
485 add_decode_as(const gchar *cl_param)
489 gchar *decoded_param;
490 gchar *remaining_param;
492 gchar *dissector_str;
493 dissector_handle_t dissector_matching;
494 dissector_table_t table_matching;
495 ftenum_t dissector_table_selector_type;
496 struct protocol_name_search user_protocol_name;
498 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
501 decoded_param = g_strdup(cl_param);
502 g_assert(decoded_param);
505 /* The lines below will parse this string (modifying it) to extract all
506 necessary information. Note that decoded_param is still needed since
507 strings are not copied - we just save pointers. */
509 /* This section extracts a layer type (table_name) from decoded_param */
510 table_name = decoded_param; /* Layer type string starts from beginning */
512 remaining_param = strchr(table_name, '=');
513 if (remaining_param == NULL) {
514 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
515 /* If the argument does not follow the template, carry on anyway to check
516 if the table name is at least correct. If remaining_param is NULL,
517 we'll exit anyway further down */
520 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
523 /* Remove leading and trailing spaces from the table name */
524 while ( table_name[0] == ' ' )
526 while ( table_name[strlen(table_name) - 1] == ' ' )
527 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
529 /* The following part searches a table matching with the layer type specified */
530 table_matching = NULL;
532 /* Look for the requested table */
533 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
534 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
537 table_matching = find_dissector_table(table_name);
538 if (!table_matching) {
539 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
543 if (!table_matching) {
544 /* Display a list of supported layer types to help the user, if the
545 specified layer type was not found */
546 cmdarg_err("Valid layer types are:");
547 fprint_all_layer_types(stderr);
549 if (remaining_param == NULL || !table_matching) {
550 /* Exit if the layer type was not found, or if no '=' separator was found
552 g_free(decoded_param);
556 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
557 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
560 remaining_param++; /* Move to the second '=' */
561 *remaining_param = '\0'; /* Remove the second '=' */
563 remaining_param++; /* Position after the layer type string */
565 /* This section extracts a selector value (selector_str) from decoded_param */
567 selector_str = remaining_param; /* Next part starts with the selector number */
569 remaining_param = strchr(selector_str, ',');
570 if (remaining_param == NULL) {
571 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
572 /* If the argument does not follow the template, carry on anyway to check
573 if the selector value is at least correct. If remaining_param is NULL,
574 we'll exit anyway further down */
577 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
580 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
582 switch (dissector_table_selector_type) {
588 /* The selector for this table is an unsigned number. Parse it as such.
589 There's no need to remove leading and trailing spaces from the
590 selector number string, because sscanf will do that for us. */
591 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
592 cmdarg_err("Invalid selector number \"%s\"", selector_str);
593 g_free(decoded_param);
600 /* The selector for this table is a string. */
604 /* There are currently no dissector tables with any types other
605 than the ones listed above. */
606 g_assert_not_reached();
609 if (remaining_param == NULL) {
610 /* Exit if no ',' separator was found (see above) */
611 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
612 fprint_all_protocols_for_layer_types(stderr, table_name);
613 g_free(decoded_param);
617 remaining_param++; /* Position after the selector number string */
619 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
621 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
623 /* Remove leading and trailing spaces from the dissector name */
624 while ( dissector_str[0] == ' ' )
626 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
627 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
629 dissector_matching = NULL;
631 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
632 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 */
633 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
636 user_protocol_name.nb_match = 0;
637 user_protocol_name.searched_name = dissector_str;
638 user_protocol_name.matched_handle = NULL;
640 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 */
642 if (user_protocol_name.nb_match != 0) {
643 dissector_matching = user_protocol_name.matched_handle;
644 if (user_protocol_name.nb_match > 1) {
645 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
649 /* OK, check whether the problem is that there isn't any such
650 protocol, or that there is but it's not specified as a protocol
651 that's valid for that dissector table.
652 Note, we don't exit here, but dissector_matching will remain NULL,
654 if (proto_get_id_by_filter_name(dissector_str) == -1) {
655 /* No such protocol */
656 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
658 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
659 dissector_str, table_name);
664 if (!dissector_matching) {
665 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
666 fprint_all_protocols_for_layer_types(stderr, table_name);
667 g_free(decoded_param);
671 /* This is the end of the code that parses the command-line options.
672 All information is now stored in the variables:
676 The above variables that are strings are still pointing to areas within
677 decoded_parm. decoded_parm thus still needs to be kept allocated in
678 until we stop needing these variables
679 decoded_param will be deallocated at each exit point of this function */
682 /* We now have a pointer to the handle for the requested dissector
683 (requested protocol) inside the variable dissector_matching */
684 switch (dissector_table_selector_type) {
690 /* The selector for this table is an unsigned number. */
691 dissector_change_uint(table_name, selector, dissector_matching);
696 /* The selector for this table is a string. */
697 dissector_change_string(table_name, selector_str, dissector_matching);
701 /* There are currently no dissector tables with any types other
702 than the ones listed above. */
703 g_assert_not_reached();
705 g_free(decoded_param); /* "Decode As" rule has been successfully added */
710 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
711 const gchar *message, gpointer user_data)
713 /* ignore log message, if log_level isn't interesting based
714 upon the console log preferences.
715 If the preferences haven't been loaded loaded yet, display the
718 The default console_log_level preference value is such that only
719 ERROR, CRITICAL and WARNING level messages are processed;
720 MESSAGE, INFO and DEBUG level messages are ignored.
722 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
723 ERROR and CRITICAL level messages so the current code is a behavioral
724 change. The current behavior is the same as in Wireshark.
726 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
727 prefs.console_log_level != 0) {
731 g_log_default_handler(log_domain, log_level, message, user_data);
736 output_file_description(const char *fname)
738 char *save_file_string;
740 /* Get a string that describes what we're writing to */
741 if (strcmp(fname, "-") == 0) {
742 /* We're writing to the standard output */
743 save_file_string = g_strdup("standard output");
745 /* We're writing to a file with the name in save_file */
746 save_file_string = g_strdup_printf("file \"%s\"", fname);
748 return save_file_string;
752 print_current_user(void) {
753 gchar *cur_user, *cur_group;
754 if (started_with_special_privs()) {
755 cur_user = get_cur_username();
756 cur_group = get_cur_groupname();
757 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
758 cur_user, cur_group);
761 if (running_with_special_privs()) {
762 fprintf(stderr, " This could be dangerous.");
764 fprintf(stderr, "\n");
769 check_capture_privs(void) {
772 /* Warn the user if npf.sys isn't loaded. */
773 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
774 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
775 "capturing or\nlisting interfaces.\n");
781 show_version(GString *comp_info_str, GString *runtime_info_str)
783 printf("TShark " VERSION "%s\n"
790 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
791 runtime_info_str->str);
795 main(int argc, char *argv[])
797 char *init_progfile_dir_error;
799 gboolean arg_error = FALSE;
805 char *gpf_path, *pf_path;
806 char *gdp_path, *dp_path;
807 int gpf_open_errno, gpf_read_errno;
808 int pf_open_errno, pf_read_errno;
809 int gdp_open_errno, gdp_read_errno;
810 int dp_open_errno, dp_read_errno;
812 volatile int exit_status = 0;
814 gboolean list_link_layer_types = FALSE;
815 gboolean start_capture = FALSE;
820 interface_options interface_opts;
822 gboolean capture_option_specified = FALSE;
824 gboolean quiet = FALSE;
825 #ifdef PCAP_NG_DEFAULT
826 volatile int out_file_type = WTAP_FILE_PCAPNG;
828 volatile int out_file_type = WTAP_FILE_PCAP;
830 volatile gboolean out_file_name_res = FALSE;
831 gchar *volatile cf_name = NULL;
832 gchar *rfilter = NULL;
833 #ifdef HAVE_PCAP_OPEN_DEAD
834 struct bpf_program fcode;
836 dfilter_t *rfcode = NULL;
839 GLogLevelFlags log_flags;
841 gchar *output_only = NULL;
844 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
845 #define OPTSTRING_B "B:"
847 #define OPTSTRING_B ""
848 #endif /* _WIN32 or HAVE_PCAP_CREATE */
849 #else /* HAVE_LIBPCAP */
850 #define OPTSTRING_B ""
851 #endif /* HAVE_LIBPCAP */
853 #ifdef HAVE_PCAP_CREATE
854 #define OPTSTRING_I "I"
856 #define OPTSTRING_I ""
859 #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:"
861 static const char optstring[] = OPTSTRING;
864 arg_list_utf_16to8(argc, argv);
865 #if !GLIB_CHECK_VERSION(2,31,0)
871 * Get credential information for later use.
873 init_process_policies();
876 * Attempt to get the pathname of the executable file.
878 init_progfile_dir_error = init_progfile_dir(argv[0], main);
879 if (init_progfile_dir_error != NULL) {
880 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
881 init_progfile_dir_error);
885 * In order to have the -X opts assigned before the wslua machine starts
886 * we need to call getopts before epan_init() gets called.
889 optind_initial = optind;
891 while ((opt = getopt(argc, argv, optstring)) != -1) {
893 case 'C': /* Configuration Profile */
894 if (profile_exists (optarg, FALSE)) {
895 set_profile_name (optarg);
897 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
909 optind = optind_initial;
914 /** Send All g_log messages to our own handler **/
918 G_LOG_LEVEL_CRITICAL|
923 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
925 g_log_set_handler(NULL,
927 tshark_log_handler, NULL /* user_data */);
928 g_log_set_handler(LOG_DOMAIN_MAIN,
930 tshark_log_handler, NULL /* user_data */);
933 g_log_set_handler(LOG_DOMAIN_CAPTURE,
935 tshark_log_handler, NULL /* user_data */);
936 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
938 tshark_log_handler, NULL /* user_data */);
941 initialize_funnel_ops();
944 capture_opts_init(&global_capture_opts, &cfile);
947 timestamp_set_type(TS_RELATIVE);
948 timestamp_set_precision(TS_PREC_AUTO);
949 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
951 /* Register all dissectors; we must do this before checking for the
952 "-G" flag, as the "-G" flag dumps information registered by the
953 dissectors, and we must do it before we read the preferences, in
954 case any dissectors register preferences. */
955 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
956 failure_message, open_failure_message, read_failure_message,
957 write_failure_message);
959 /* Register all tap listeners; we do this before we parse the arguments,
960 as the "-z" argument can specify a registered tap. */
962 /* we register the plugin taps before the other taps because
963 stats_tree taps plugins will be registered as tap listeners
964 by stats_tree_stat.c and need to registered before that */
966 register_all_plugin_tap_listeners();
968 register_all_tap_listeners();
970 /* If invoked with the "-G" flag, we dump out information based on
971 the argument to the "-G" flag; if no argument is specified,
972 for backwards compatibility we dump out a glossary of display
975 XXX - we do this here, for now, to support "-G" with no arguments.
976 If none of our build or other processes uses "-G" with no arguments,
977 we can just process it with the other arguments. */
978 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
979 proto_initialize_all_prefixes();
982 proto_registrar_dump_fields(1);
984 if (strcmp(argv[2], "fields") == 0)
985 proto_registrar_dump_fields(1);
986 else if (strcmp(argv[2], "fields2") == 0)
987 proto_registrar_dump_fields(2);
988 else if (strcmp(argv[2], "fields3") == 0)
989 proto_registrar_dump_fields(3);
990 else if (strcmp(argv[2], "protocols") == 0)
991 proto_registrar_dump_protocols();
992 else if (strcmp(argv[2], "values") == 0)
993 proto_registrar_dump_values();
994 else if (strcmp(argv[2], "ftypes") == 0)
995 proto_registrar_dump_ftypes();
996 else if (strcmp(argv[2], "decodes") == 0)
997 dissector_dump_decodes();
998 else if (strcmp(argv[2], "heuristic-decodes") == 0)
999 dissector_dump_heur_decodes();
1000 else if (strcmp(argv[2], "defaultprefs") == 0)
1002 else if (strcmp(argv[2], "plugins") == 0)
1004 else if (strcmp(argv[2], "?") == 0)
1005 glossary_option_help();
1006 else if (strcmp(argv[2], "-?") == 0)
1007 glossary_option_help();
1008 else if (strcmp(argv[2], "currentprefs") == 0) {
1009 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1010 &pf_open_errno, &pf_read_errno, &pf_path);
1013 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1020 /* Set the C-language locale to the native environment. */
1021 setlocale(LC_ALL, "");
1023 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1024 &pf_open_errno, &pf_read_errno, &pf_path);
1025 if (gpf_path != NULL) {
1026 if (gpf_open_errno != 0) {
1027 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1028 pf_path, g_strerror(gpf_open_errno));
1030 if (gpf_read_errno != 0) {
1031 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1032 pf_path, g_strerror(gpf_read_errno));
1035 if (pf_path != NULL) {
1036 if (pf_open_errno != 0) {
1037 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1038 g_strerror(pf_open_errno));
1040 if (pf_read_errno != 0) {
1041 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1042 pf_path, g_strerror(pf_read_errno));
1048 /* Set the name resolution code's flags from the preferences. */
1049 gbl_resolv_flags = prefs_p->name_resolve;
1051 /* Read the disabled protocols file. */
1052 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1053 &dp_path, &dp_open_errno, &dp_read_errno);
1054 if (gdp_path != NULL) {
1055 if (gdp_open_errno != 0) {
1056 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1057 gdp_path, g_strerror(gdp_open_errno));
1059 if (gdp_read_errno != 0) {
1060 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1061 gdp_path, g_strerror(gdp_read_errno));
1065 if (dp_path != NULL) {
1066 if (dp_open_errno != 0) {
1068 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1069 g_strerror(dp_open_errno));
1071 if (dp_read_errno != 0) {
1073 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1074 g_strerror(dp_read_errno));
1079 check_capture_privs();
1081 cap_file_init(&cfile);
1083 /* Print format defaults to this. */
1084 print_format = PR_FMT_TEXT;
1086 output_fields = output_fields_new();
1088 /* Now get our args */
1089 while ((opt = getopt(argc, argv, optstring)) != -1) {
1091 case '2': /* Perform two pass analysis */
1092 perform_two_pass_analysis = TRUE;
1094 case 'a': /* autostop criteria */
1095 case 'b': /* Ringbuffer option */
1096 case 'c': /* Capture x packets */
1097 case 'f': /* capture filter */
1098 case 'i': /* Use interface x */
1099 case 'p': /* Don't capture in promiscuous mode */
1100 #ifdef HAVE_PCAP_CREATE
1101 case 'I': /* Capture in monitor mode, if available */
1103 case 's': /* Set the snapshot (capture) length */
1104 case 'w': /* Write to capture file x */
1105 case 'y': /* Set the pcap data link type */
1106 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1107 case 'B': /* Buffer size */
1108 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1110 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1115 capture_option_specified = TRUE;
1120 /* Configuration profile settings were already processed just ignore them this time*/
1122 case 'd': /* Decode as rule */
1123 if (!add_decode_as(optarg))
1126 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1127 case 'K': /* Kerberos keytab file */
1128 read_keytab_file(optarg);
1131 case 'D': /* Print a list of capture devices and exit */
1133 if_list = capture_interface_list(&err, &err_str);
1134 if (if_list == NULL) {
1136 case CANT_GET_INTERFACE_LIST:
1137 case DONT_HAVE_PCAP:
1138 cmdarg_err("%s", err_str);
1142 case NO_INTERFACES_FOUND:
1143 cmdarg_err("There are no interfaces on which a capture can be done");
1148 capture_opts_print_interfaces(if_list);
1149 free_interface_list(if_list);
1152 capture_option_specified = TRUE;
1158 output_fields_add(output_fields, optarg);
1162 if(!output_fields_set_option(output_fields, optarg)) {
1163 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1164 output_fields_list_options(stderr);
1169 out_file_type = wtap_short_string_to_file_type(optarg);
1170 if (out_file_type < 0) {
1171 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1172 list_capture_types();
1176 case 'W': /* Select extra information to save in our capture file */
1177 /* This is patterned after the -N flag which may not be the best idea. */
1178 if (strchr(optarg, 'n'))
1179 out_file_name_res = TRUE;
1181 case 'H': /* Read address to name mappings from a hosts file */
1182 if (! read_hosts_file(optarg))
1184 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1187 out_file_name_res = TRUE;
1190 case 'h': /* Print help and exit */
1194 case 'l': /* "Line-buffer" standard output */
1195 /* This isn't line-buffering, strictly speaking, it's just
1196 flushing the standard output after the information for
1197 each packet is printed; however, that should be good
1198 enough for all the purposes to which "-l" is put (and
1199 is probably actually better for "-V", as it does fewer
1202 See the comment in "process_packet()" for an explanation of
1203 why we do that, and why we don't just use "setvbuf()" to
1204 make the standard output line-buffered (short version: in
1205 Windows, "line-buffered" is the same as "fully-buffered",
1206 and the output buffer is only flushed when it fills up). */
1207 line_buffered = TRUE;
1209 case 'L': /* Print list of link-layer types and exit */
1211 list_link_layer_types = TRUE;
1213 capture_option_specified = TRUE;
1217 case 'n': /* No name resolution */
1218 gbl_resolv_flags = RESOLV_NONE;
1220 case 'N': /* Select what types of addresses/port #s to resolve */
1221 if (gbl_resolv_flags == RESOLV_ALL)
1222 gbl_resolv_flags = RESOLV_NONE;
1223 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1224 if (badopt != '\0') {
1225 cmdarg_err("-N specifies unknown resolving option '%c';",
1227 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1231 case 'o': /* Override preference from command line */
1232 switch (prefs_set_pref(optarg)) {
1237 case PREFS_SET_SYNTAX_ERR:
1238 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1242 case PREFS_SET_NO_SUCH_PREF:
1243 case PREFS_SET_OBSOLETE:
1244 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1249 case 'q': /* Quiet */
1252 case 'r': /* Read capture file x */
1253 cf_name = g_strdup(optarg);
1255 case 'R': /* Read file filter */
1258 case 'P': /* Print packets even when writing to a file */
1259 print_packet_info = TRUE;
1261 case 'S': /* Set the line Separator to be printed between packets */
1262 separator = strdup(optarg);
1264 case 't': /* Time stamp type */
1265 if (strcmp(optarg, "r") == 0)
1266 timestamp_set_type(TS_RELATIVE);
1267 else if (strcmp(optarg, "a") == 0)
1268 timestamp_set_type(TS_ABSOLUTE);
1269 else if (strcmp(optarg, "ad") == 0)
1270 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1271 else if (strcmp(optarg, "d") == 0)
1272 timestamp_set_type(TS_DELTA);
1273 else if (strcmp(optarg, "dd") == 0)
1274 timestamp_set_type(TS_DELTA_DIS);
1275 else if (strcmp(optarg, "e") == 0)
1276 timestamp_set_type(TS_EPOCH);
1277 else if (strcmp(optarg, "u") == 0)
1278 timestamp_set_type(TS_UTC);
1279 else if (strcmp(optarg, "ud") == 0)
1280 timestamp_set_type(TS_UTC_WITH_DATE);
1282 cmdarg_err("Invalid time stamp type \"%s\"",
1284 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1285 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1289 case 'T': /* printing Type */
1290 if (strcmp(optarg, "text") == 0) {
1291 output_action = WRITE_TEXT;
1292 print_format = PR_FMT_TEXT;
1293 } else if (strcmp(optarg, "ps") == 0) {
1294 output_action = WRITE_TEXT;
1295 print_format = PR_FMT_PS;
1296 } else if (strcmp(optarg, "pdml") == 0) {
1297 output_action = WRITE_XML;
1299 } else if (strcmp(optarg, "psml") == 0) {
1300 output_action = WRITE_XML;
1302 } else if(strcmp(optarg, "fields") == 0) {
1303 output_action = WRITE_FIELDS;
1304 verbose = TRUE; /* Need full tree info */
1306 cmdarg_err("Invalid -T parameter.");
1307 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1311 case 'u': /* Seconds type */
1312 if (strcmp(optarg, "s") == 0)
1313 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1314 else if (strcmp(optarg, "hms") == 0)
1315 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1317 cmdarg_err("Invalid seconds type \"%s\"", optarg);
1318 cmdarg_err_cont("It must be \"s\" for seconds or \"hms\" for hours, minutes and seconds.");
1322 case 'v': /* Show version and exit */
1324 GString *comp_info_str;
1325 GString *runtime_info_str;
1326 /* Assemble the compile-time version information string */
1327 comp_info_str = g_string_new("Compiled ");
1328 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1330 /* Assemble the run-time version information string */
1331 runtime_info_str = g_string_new("Running ");
1332 get_runtime_version_info(runtime_info_str, NULL);
1333 show_version(comp_info_str, runtime_info_str);
1334 g_string_free(comp_info_str, TRUE);
1335 g_string_free(runtime_info_str, TRUE);
1338 case 'O': /* Only output these protocols */
1339 output_only = g_strdup(optarg);
1341 case 'V': /* Verbose */
1343 /* The user asked for a verbose output, so let's ensure they get it,
1344 * even if they're writing to a file.
1346 print_packet_info = TRUE;
1348 case 'x': /* Print packet data in hex (and ASCII) */
1350 /* The user asked for hex output, so let's ensure they get it,
1351 * even if they're writing to a file.
1353 print_packet_info = TRUE;
1358 /* We won't call the init function for the stat this soon
1359 as it would disallow MATE's fields (which are registered
1360 by the preferences set callback) from being used as
1361 part of a tap filter. Instead, we just add the argument
1362 to a list of stat arguments. */
1363 if (!process_stat_cmd_arg(optarg)) {
1364 cmdarg_err("invalid -z argument.");
1365 cmdarg_err_cont(" -z argument must be one of :");
1366 list_stat_cmd_args();
1371 case '?': /* Bad flag - print usage message */
1374 list_capture_types();
1384 /* If we specified output fields, but not the output field type... */
1385 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1386 cmdarg_err("Output fields were specified with \"-e\", "
1387 "but \"-Tfields\" was not specified.");
1389 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1390 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1391 "specified with \"-e\".");
1396 /* If no capture filter or read filter has been specified, and there are
1397 still command-line arguments, treat them as the tokens of a capture
1398 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1399 flag was specified. */
1400 if (optind < argc) {
1401 if (cf_name != NULL) {
1402 if (rfilter != NULL) {
1403 cmdarg_err("Read filters were specified both with \"-R\" "
1404 "and with additional command-line arguments.");
1407 rfilter = get_args_as_string(argc, argv, optind);
1410 if (global_capture_opts.default_options.cfilter) {
1411 cmdarg_err("A default capture filter was specified both with \"-f\""
1412 " and with additional command-line arguments.");
1415 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1416 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1417 if (interface_opts.cfilter == NULL) {
1418 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1419 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1420 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1422 cmdarg_err("A capture filter was specified both with \"-f\""
1423 " and with additional command-line arguments.");
1427 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1429 capture_option_specified = TRUE;
1435 if (!global_capture_opts.saving_to_file) {
1436 /* We're not saving the capture to a file; if "-q" wasn't specified,
1437 we should print packet information */
1439 print_packet_info = TRUE;
1441 /* We're saving to a file; if we're writing to the standard output.
1442 and we'll also be writing dissected packets to the standard
1443 output, reject the request. At best, we could redirect that
1444 to the standard error; we *can't* write both to the standard
1445 output and have either of them be useful. */
1446 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1447 cmdarg_err("You can't write both raw packet data and dissected packets"
1448 " to the standard output.");
1453 /* We're not saving the capture to a file; if "-q" wasn't specified,
1454 we should print packet information */
1456 print_packet_info = TRUE;
1459 #ifndef HAVE_LIBPCAP
1460 if (capture_option_specified)
1461 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1468 /* We don't support capture filters when reading from a capture file
1469 (the BPF compiler doesn't support all link-layer types that we
1470 support in capture files we read). */
1472 if (cf_name != NULL) {
1473 if (global_capture_opts.default_options.cfilter) {
1474 cmdarg_err("Only read filters, not capture filters, "
1475 "can be specified when reading a capture file.");
1482 if (output_action != WRITE_TEXT) {
1483 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1488 if (output_only != NULL) {
1492 cmdarg_err("-O requires -V");
1496 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1497 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1498 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1503 if (list_link_layer_types) {
1504 /* We're supposed to list the link-layer types for an interface;
1505 did the user also specify a capture file to be read? */
1507 /* Yes - that's bogus. */
1508 cmdarg_err("You can't specify -L and a capture file to be read.");
1511 /* No - did they specify a ring buffer option? */
1512 if (global_capture_opts.multi_files_on) {
1513 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1519 * "-r" was specified, so we're reading a capture file.
1520 * Capture options don't apply here.
1522 if (global_capture_opts.multi_files_on) {
1523 cmdarg_err("Multiple capture files requested, but "
1524 "a capture isn't being done.");
1527 if (global_capture_opts.has_file_duration) {
1528 cmdarg_err("Switching capture files after a time interval was specified, but "
1529 "a capture isn't being done.");
1532 if (global_capture_opts.has_ring_num_files) {
1533 cmdarg_err("A ring buffer of capture files was specified, but "
1534 "a capture isn't being done.");
1537 if (global_capture_opts.has_autostop_files) {
1538 cmdarg_err("A maximum number of capture files was specified, but "
1539 "a capture isn't being done.");
1543 /* Note: TShark now allows the restriction of a _read_ file by packet count
1544 * and byte count as well as a write file. Other autostop options remain valid
1545 * only for a write file.
1547 if (global_capture_opts.has_autostop_duration) {
1548 cmdarg_err("A maximum capture time was specified, but "
1549 "a capture isn't being done.");
1554 * "-r" wasn't specified, so we're doing a live capture.
1556 if (global_capture_opts.saving_to_file) {
1557 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1559 /* When capturing, we only support writing pcap or pcap-ng format. */
1560 if (out_file_type != WTAP_FILE_PCAP && out_file_type != WTAP_FILE_PCAPNG) {
1561 cmdarg_err("Live captures can only be saved in libpcap format.");
1564 if (global_capture_opts.multi_files_on) {
1565 /* Multiple-file mode doesn't work under certain conditions:
1566 a) it doesn't work if you're writing to the standard output;
1567 b) it doesn't work if you're writing to a pipe;
1569 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1570 cmdarg_err("Multiple capture files requested, but "
1571 "the capture is being written to the standard output.");
1574 if (global_capture_opts.output_to_pipe) {
1575 cmdarg_err("Multiple capture files requested, but "
1576 "the capture file is a pipe.");
1579 if (!global_capture_opts.has_autostop_filesize &&
1580 !global_capture_opts.has_file_duration) {
1581 cmdarg_err("Multiple capture files requested, but "
1582 "no maximum capture file size or duration was specified.");
1586 /* Currently, we don't support read filters when capturing
1587 and saving the packets. */
1588 if (rfilter != NULL) {
1589 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1593 /* They didn't specify a "-w" flag, so we won't be saving to a
1594 capture file. Check for options that only make sense if
1595 we're saving to a file. */
1596 if (global_capture_opts.has_autostop_filesize) {
1597 cmdarg_err("Maximum capture file size specified, but "
1598 "capture isn't being saved to a file.");
1601 if (global_capture_opts.multi_files_on) {
1602 cmdarg_err("Multiple capture files requested, but "
1603 "the capture isn't being saved to a file.");
1612 /* Start windows sockets */
1613 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1616 /* Notify all registered modules that have had any of their preferences
1617 changed either from one of the preferences file or from the command
1618 line that their preferences have changed. */
1621 /* At this point MATE will have registered its field array so we can
1622 have a tap filter with one of MATE's late-registered fields as part
1623 of the filter. We can now process all the "-z" arguments. */
1624 start_requested_stats();
1627 /* We currently don't support taps, or printing dissected packets,
1628 if we're writing to a pipe. */
1629 if (global_capture_opts.saving_to_file &&
1630 global_capture_opts.output_to_pipe) {
1631 if (tap_listeners_require_dissection()) {
1632 cmdarg_err("Taps aren't supported when saving to a pipe.");
1635 if (print_packet_info) {
1636 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1642 /* disabled protocols as per configuration file */
1643 if (gdp_path == NULL && dp_path == NULL) {
1644 set_disabled_protos_list();
1647 /* Build the column format array */
1648 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1651 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1652 capture_opts_trim_ring_num_files(&global_capture_opts);
1655 if (rfilter != NULL) {
1656 if (!dfilter_compile(rfilter, &rfcode)) {
1657 cmdarg_err("%s", dfilter_error_msg);
1659 #ifdef HAVE_PCAP_OPEN_DEAD
1663 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1665 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1667 " Note: That display filter code looks like a valid capture filter;");
1669 " maybe you mixed them up?");
1678 cfile.rfcode = rfcode;
1680 if (print_packet_info) {
1681 /* If we're printing as text or PostScript, we have
1682 to create a print stream. */
1683 if (output_action == WRITE_TEXT) {
1684 switch (print_format) {
1687 print_stream = print_stream_text_stdio_new(stdout);
1691 print_stream = print_stream_ps_stdio_new(stdout);
1695 g_assert_not_reached();
1700 /* We have to dissect each packet if:
1702 we're printing information about each packet;
1704 we're using a read filter on the packets;
1706 we're using any taps that need dissection. */
1707 do_dissection = print_packet_info || rfcode || tap_listeners_require_dissection();
1711 * We're reading a capture file.
1715 * Immediately relinquish any special privileges we have; we must not
1716 * be allowed to read any capture files the user running TShark
1719 relinquish_special_privs_perm();
1720 print_current_user();
1722 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1727 /* Set timestamp precision; there should arguably be a command-line
1728 option to let the user set this. */
1729 switch(wtap_file_tsprecision(cfile.wth)) {
1730 case(WTAP_FILE_TSPREC_SEC):
1731 timestamp_set_precision(TS_PREC_AUTO_SEC);
1733 case(WTAP_FILE_TSPREC_DSEC):
1734 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1736 case(WTAP_FILE_TSPREC_CSEC):
1737 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1739 case(WTAP_FILE_TSPREC_MSEC):
1740 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1742 case(WTAP_FILE_TSPREC_USEC):
1743 timestamp_set_precision(TS_PREC_AUTO_USEC);
1745 case(WTAP_FILE_TSPREC_NSEC):
1746 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1749 g_assert_not_reached();
1752 /* Process the packets in the file */
1755 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
1756 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1757 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1759 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
1762 CATCH(OutOfMemoryError) {
1766 "Sorry, but TShark has to terminate now!\n"
1768 "Some infos / workarounds can be found at:\n"
1769 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
1774 /* We still dump out the results of taps, etc., as we might have
1775 read some packets; however, we exit with an error status. */
1779 /* No capture file specified, so we're supposed to do a live capture
1780 (or get a list of link-layer types for a live capture device);
1781 do we have support for live captures? */
1783 /* trim the interface name and exit if that failed */
1784 if (!capture_opts_trim_iface(&global_capture_opts,
1785 (prefs_p->capture_device) ? get_if_name(prefs_p->capture_device) : NULL)) {
1789 /* if requested, list the link layer types and exit */
1790 if (list_link_layer_types) {
1792 interface_options interface_opts;
1794 /* Get the list of link-layer types for the capture devices. */
1795 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1796 if_capabilities_t *caps;
1798 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1799 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str);
1801 cmdarg_err("%s", err_str);
1805 if (caps->data_link_types == NULL) {
1806 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
1809 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
1810 free_if_capabilities(caps);
1815 if (print_packet_info) {
1816 if (!write_preamble(NULL)) {
1817 show_print_file_io_error(errno);
1820 } else if (!quiet) {
1822 * We're not printing information for each packet, and the user
1823 * didn't ask us not to print a count of packets as they arrive,
1824 * so print that count so the user knows that packets are arriving.
1826 * XXX - what if the user wants to do a live capture, doesn't want
1827 * to save it to a file, doesn't want information printed for each
1828 * packet, does want some "-z" statistic, and wants packet counts
1829 * so they know whether they're seeing any packets?
1831 print_packet_counts = TRUE;
1834 /* For now, assume libpcap gives microsecond precision. */
1835 timestamp_set_precision(TS_PREC_AUTO_USEC);
1838 * XXX - this returns FALSE if an error occurred, but it also
1839 * returns FALSE if the capture stops because a time limit
1840 * was reached (and possibly other limits), so we can't assume
1841 * it means an error.
1843 * The capture code is a bit twisty, so it doesn't appear to
1844 * be an easy fix. We just ignore the return value for now.
1845 * Instead, pass on the exit status from the capture child.
1848 exit_status = global_capture_opts.fork_child_status;
1850 if (print_packet_info) {
1851 if (!write_finale()) {
1853 show_print_file_io_error(err);
1857 /* No - complain. */
1858 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1865 if (cfile.frames != NULL) {
1866 free_frame_data_sequence(cfile.frames);
1867 cfile.frames = NULL;
1870 draw_tap_listeners(TRUE);
1871 funnel_dump_all_text_windows();
1874 output_fields_free(output_fields);
1875 output_fields = NULL;
1880 /*#define USE_BROKEN_G_MAIN_LOOP*/
1882 #ifdef USE_BROKEN_G_MAIN_LOOP
1885 gboolean loop_running = FALSE;
1887 guint32 packet_count = 0;
1890 /* XXX - move to the right position / file */
1891 /* read from a pipe (callback) */
1892 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1894 typedef struct pipe_input_tag {
1898 pipe_input_cb_t input_cb;
1899 guint pipe_input_id;
1901 GMutex *callback_running;
1905 static pipe_input_t pipe_input;
1908 /* The timer has expired, see if there's stuff to read from the pipe,
1909 if so, do the callback */
1911 pipe_timer_cb(gpointer data)
1915 gboolean result, result1;
1917 pipe_input_t *pipe_input_p = data;
1918 gint iterations = 0;
1920 g_mutex_lock (pipe_input_p->callback_running);
1922 /* try to read data from the pipe only 5 times, to avoid blocking */
1923 while(iterations < 5) {
1924 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1926 /* Oddly enough although Named pipes don't work on win9x,
1927 PeekNamedPipe does !!! */
1928 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
1929 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1931 /* Get the child process exit status */
1932 result1 = GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
1935 /* If the Peek returned an error, or there are bytes to be read
1936 or the childwatcher thread has terminated then call the normal
1938 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1940 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1942 /* And call the real handler */
1943 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
1944 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1945 /* pipe closed, return false so that the timer is stopped */
1946 g_mutex_unlock (pipe_input_p->callback_running);
1951 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1952 /* No data, stop now */
1959 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1961 g_mutex_unlock (pipe_input_p->callback_running);
1963 /* we didn't stopped the timer, so let it run */
1970 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1973 pipe_input.source = source;
1974 pipe_input.child_process = child_process;
1975 pipe_input.user_data = user_data;
1976 pipe_input.input_cb = input_cb;
1979 #if GLIB_CHECK_VERSION(2,31,0)
1980 pipe_input.callback_running = g_malloc(sizeof(GMutex));
1981 g_mutex_init(pipe_input.callback_running);
1983 pipe_input.callback_running = g_mutex_new();
1985 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1986 do this but that doesn't cover all win32 platforms. GTK can do
1987 this but doesn't seem to work over processes. Attempt to do
1988 something similar here, start a timer and check for data on every
1990 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1991 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2002 GString *str = g_string_new("");
2003 #ifdef USE_TSHARK_SELECT
2007 struct sigaction action, oldaction;
2011 * XXX - dropping privileges is still required, until code cleanup is done
2013 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2014 * when it's done, we don't need special privileges to run tshark at all,
2015 * therefore we don't need to drop these privileges
2016 * The only thing we might want to keep is a warning if tshark is run as root,
2017 * as it's no longer necessary and potentially dangerous.
2019 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2020 * We've opened the capture device, so we shouldn't need any special
2021 * privileges any more; relinquish those privileges.
2023 * XXX - if we have saved set-user-ID support, we should give up those
2024 * privileges immediately, and then reclaim them long enough to get
2025 * a list of network interfaces and to open one, and then give them
2026 * up again, so that stuff we do while processing the argument list,
2027 * reading the user's preferences, loading and starting plugins
2028 * (especially *user* plugins), etc. is done with the user's privileges,
2029 * not special privileges.
2031 relinquish_special_privs_perm();
2032 print_current_user();
2034 /* Cleanup all data structures used for dissection. */
2035 cleanup_dissection();
2036 /* Initialize all data structures used for dissection. */
2040 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2041 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2043 /* Catch SIGINT and SIGTERM and, if we get either of them,
2044 clean up and exit. If SIGHUP isn't being ignored, catch
2045 it too and, if we get it, clean up and exit.
2047 We restart any read that was in progress, so that it doesn't
2048 disrupt reading from the sync pipe. The signal handler tells
2049 the capture child to finish; it will report that it finished,
2050 or will exit abnormally, so we'll stop reading from the sync
2051 pipe, pick up the exit status, and quit. */
2052 memset(&action, 0, sizeof(action));
2053 action.sa_handler = capture_cleanup;
2054 action.sa_flags = SA_RESTART;
2055 sigemptyset(&action.sa_mask);
2056 sigaction(SIGTERM, &action, NULL);
2057 sigaction(SIGINT, &action, NULL);
2058 sigaction(SIGHUP, NULL, &oldaction);
2059 if (oldaction.sa_handler == SIG_DFL)
2060 sigaction(SIGHUP, &action, NULL);
2063 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2064 quiet mode, report the number of packets we've captured.
2066 Again, restart any read that was in progress, so that it doesn't
2067 disrupt reading from the sync pipe. */
2068 action.sa_handler = report_counts_siginfo;
2069 action.sa_flags = SA_RESTART;
2070 sigemptyset(&action.sa_mask);
2071 sigaction(SIGINFO, &action, NULL);
2072 #endif /* SIGINFO */
2075 global_capture_opts.state = CAPTURE_PREPARING;
2077 /* Let the user know which interfaces were chosen. */
2078 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2079 interface_options interface_opts;
2081 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2082 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2083 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2084 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2087 if (global_capture_opts.ifaces->len < 2) {
2089 if (global_capture_opts.ifaces->len < 4) {
2091 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2092 interface_options interface_opts;
2094 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2096 if (global_capture_opts.ifaces->len > 2) {
2097 g_string_append_printf(str, ",");
2099 g_string_append_printf(str, " ");
2100 if (i == global_capture_opts.ifaces->len - 1) {
2101 g_string_append_printf(str, "and ");
2104 g_string_append_printf(str, "%s", interface_opts.descr);
2107 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2109 fprintf(stderr, "Capturing on %s\n", str->str);
2110 g_string_free(str, TRUE);
2112 ret = sync_pipe_start(&global_capture_opts);
2117 /* the actual capture loop
2119 * XXX - glib doesn't seem to provide any event based loop handling.
2121 * XXX - for whatever reason,
2122 * calling g_main_loop_new() ends up in 100% cpu load.
2124 * But that doesn't matter: in UNIX we can use select() to find an input
2125 * source with something to do.
2127 * But that doesn't matter because we're in a CLI (that doesn't need to
2128 * update a GUI or something at the same time) so it's OK if we block
2129 * trying to read from the pipe.
2131 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2132 * wrong (but I leave it there in case I am...).
2135 #ifdef USE_TSHARK_SELECT
2137 FD_SET(pipe_input.source, &readfds);
2140 loop_running = TRUE;
2144 while (loop_running)
2146 #ifdef USE_TSHARK_SELECT
2147 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2153 } else if (ret == 1) {
2155 /* Call the real handler */
2156 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2157 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2160 #ifdef USE_TSHARK_SELECT
2165 CATCH(OutOfMemoryError) {
2169 "Sorry, but TShark has to terminate now!\n"
2171 "Some infos / workarounds can be found at:\n"
2172 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2180 /* XXX - move the call to main_window_update() out of capture_sync.c */
2181 /* dummy for capture_sync.c to make linker happy */
2182 void main_window_update(void)
2186 /* capture child detected an error */
2188 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
2190 cmdarg_err("%s", error_msg);
2191 cmdarg_err_cont("%s", secondary_error_msg);
2195 /* capture child detected an capture filter related error */
2197 capture_input_cfilter_error_message(capture_options *capture_opts, guint i, char *error_message)
2199 dfilter_t *rfcode = NULL;
2200 interface_options interface_opts;
2202 g_assert(i < capture_opts->ifaces->len);
2203 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2205 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2207 "Invalid capture filter \"%s\" for interface %s!\n"
2209 "That string looks like a valid display filter; however, it isn't a valid\n"
2210 "capture filter (%s).\n"
2212 "Note that display filters and capture filters don't have the same syntax,\n"
2213 "so you can't use most display filter expressions as capture filters.\n"
2215 "See the User's Guide for a description of the capture filter syntax.",
2216 interface_opts.cfilter, interface_opts.descr, error_message);
2217 dfilter_free(rfcode);
2220 "Invalid capture filter \"%s\" for interface %s!\n"
2222 "That string isn't a valid capture filter (%s).\n"
2223 "See the User's Guide for a description of the capture filter syntax.",
2224 interface_opts.cfilter, interface_opts.descr, error_message);
2229 /* capture child tells us we have a new (or the first) capture file */
2231 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
2233 gboolean is_tempfile;
2236 if(capture_opts->state == CAPTURE_PREPARING) {
2237 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2239 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2241 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
2243 /* free the old filename */
2244 if (capture_opts->save_file != NULL) {
2246 /* we start a new capture file, close the old one (if we had one before) */
2247 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
2248 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
2249 wtap_close(((capture_file *) capture_opts->cf)->wth);
2251 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
2254 g_free(capture_opts->save_file);
2255 is_tempfile = FALSE;
2257 /* we didn't had a save_file before, must be a tempfile */
2261 /* save the new filename */
2262 capture_opts->save_file = g_strdup(new_file);
2264 /* if we are in real-time mode, open the new file now */
2266 /* Attempt to open the capture file and set up to read from it. */
2267 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
2271 /* Don't unlink (delete) the save file - leave it around,
2272 for debugging purposes. */
2273 g_free(capture_opts->save_file);
2274 capture_opts->save_file = NULL;
2279 capture_opts->state = CAPTURE_RUNNING;
2285 /* capture child tells us we have new packets to read */
2287 capture_input_new_packets(capture_options *capture_opts, int to_read)
2293 capture_file *cf = capture_opts->cf;
2294 gboolean filtering_tap_listeners;
2299 * Prevent a SIGINFO handler from writing to the standard error while
2300 * we're doing so or writing to the standard output; instead, have it
2301 * just set a flag telling us to print that information when we're done.
2304 #endif /* SIGINFO */
2306 /* Do we have any tap listeners with filters? */
2307 filtering_tap_listeners = have_filtering_tap_listeners();
2309 /* Get the union of the flags for all tap listeners. */
2310 tap_flags = union_of_tap_listener_flags();
2313 while (to_read-- && cf->wth) {
2314 wtap_cleareof(cf->wth);
2315 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2317 /* read from file failed, tell the capture child to stop */
2318 sync_pipe_stop(capture_opts);
2319 wtap_close(cf->wth);
2322 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2323 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2324 filtering_tap_listeners, tap_flags);
2327 /* packet successfully read and gone through the "Read Filter" */
2333 * Dumpcap's doing all the work; we're not doing any dissection.
2334 * Count all the packets it wrote.
2336 packet_count += to_read;
2339 if (print_packet_counts) {
2340 /* We're printing packet counts. */
2341 if (packet_count != 0) {
2342 fprintf(stderr, "\r%u ", packet_count);
2343 /* stderr could be line buffered */
2350 * Allow SIGINFO handlers to write.
2355 * If a SIGINFO handler asked us to write out capture counts, do so.
2359 #endif /* SIGINFO */
2365 if (!print_packet_counts) {
2366 /* Report the count only if we aren't printing a packet count
2367 as packets arrive. */
2368 fprintf(stderr, "%u packet%s captured\n", packet_count,
2369 plurality(packet_count, "", "s"));
2372 infoprint = FALSE; /* we just reported it */
2373 #endif /* SIGINFO */
2378 report_counts_siginfo(int signum _U_)
2380 int sav_errno = errno;
2381 /* If we've been told to delay printing, just set a flag asking
2382 that we print counts (if we're supposed to), otherwise print
2383 the count of packets captured (if we're supposed to). */
2390 #endif /* SIGINFO */
2393 /* capture child detected any packet drops? */
2395 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2397 if (print_packet_counts) {
2398 /* We're printing packet counts to stderr.
2399 Send a newline so that we move to the line after the packet count. */
2400 fprintf(stderr, "\n");
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, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2412 * Capture child closed its side of the pipe, report any error and
2413 * do the required cleanup.
2416 capture_input_closed(capture_options *capture_opts, gchar *msg)
2418 capture_file *cf = (capture_file *) capture_opts->cf;
2421 fprintf(stderr, "tshark: %s\n", msg);
2425 if(cf != NULL && cf->wth != NULL) {
2426 wtap_close(cf->wth);
2427 if(cf->is_tempfile) {
2428 ws_unlink(cf->filename);
2431 #ifdef USE_BROKEN_G_MAIN_LOOP
2432 /*g_main_loop_quit(loop);*/
2435 loop_running = FALSE;
2444 capture_cleanup(DWORD ctrltype _U_)
2446 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2447 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2448 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2449 like SIGTERM at least when the machine's shutting down.
2451 For now, we handle them all as indications that we should clean up
2452 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2455 We must return TRUE so that no other handler - such as one that would
2456 terminate the process - gets called.
2458 XXX - for some reason, typing ^C to TShark, if you run this in
2459 a Cygwin console window in at least some versions of Cygwin,
2460 causes TShark to terminate immediately; this routine gets
2461 called, but the main loop doesn't get a chance to run and
2462 exit cleanly, at least if this is compiled with Microsoft Visual
2463 C++ (i.e., it's a property of the Cygwin console window or Bash;
2464 it happens if TShark is not built with Cygwin - for all I know,
2465 building it with Cygwin may make the problem go away). */
2467 /* tell the capture child to stop */
2468 sync_pipe_stop(&global_capture_opts);
2470 /* don't stop our own loop already here, otherwise status messages and
2471 * cleanup wouldn't be done properly. The child will indicate the stop of
2472 * everything by calling capture_input_closed() later */
2478 capture_cleanup(int signum _U_)
2480 /* tell the capture child to stop */
2481 sync_pipe_stop(&global_capture_opts);
2483 /* don't stop our own loop already here, otherwise status messages and
2484 * cleanup wouldn't be done properly. The child will indicate the stop of
2485 * everything by calling capture_input_closed() later */
2488 #endif /* HAVE_LIBPCAP */
2491 process_packet_first_pass(capture_file *cf,
2492 gint64 offset, const struct wtap_pkthdr *whdr,
2493 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2497 gboolean create_proto_tree = FALSE;
2501 /* The frame number of this packet is one more than the count of
2502 frames in this packet. */
2503 framenum = cf->count + 1;
2505 /* If we're not running a display filter and we're not printing any
2506 packet information, we don't need to do a dissection. This means
2507 that all packets can be marked as 'passed'. */
2510 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2512 /* If we're going to print packet information, or we're going to
2513 run a read filter, or we're going to process taps, set up to
2514 do a dissection and do so. */
2515 if (do_dissection) {
2516 if (gbl_resolv_flags)
2517 /* Grab any resolved addresses */
2518 host_name_lookup_process(NULL);
2521 create_proto_tree = TRUE;
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, create_proto_tree, 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;
2677 gchar *err_info = NULL;
2679 char *save_file_string = NULL;
2680 gboolean filtering_tap_listeners;
2682 wtapng_section_t *shb_hdr;
2683 wtapng_iface_descriptions_t *idb_inf;
2686 shb_hdr = wtap_file_get_shb_info(cf->wth);
2687 idb_inf = wtap_file_get_idb_info(cf->wth);
2688 #ifdef PCAP_NG_DEFAULT
2689 if (idb_inf->number_of_interfaces > 0) {
2690 linktype = WTAP_ENCAP_PER_PACKET;
2692 linktype = wtap_file_encap(cf->wth);
2695 linktype = wtap_file_encap(cf->wth);
2697 if (save_file != NULL) {
2698 /* Get a string that describes what we're writing to */
2699 save_file_string = output_file_description(save_file);
2701 /* Set up to write to the capture file. */
2702 snapshot_length = wtap_snapshot_length(cf->wth);
2703 if (snapshot_length == 0) {
2704 /* Snapshot length of input file not known. */
2705 snapshot_length = WTAP_MAX_PACKET_SIZE;
2707 /* If we don't have an application name add Tshark */
2708 if(shb_hdr->shb_user_appl == NULL) {
2709 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_svnversion);
2710 shb_hdr->shb_user_appl = appname;
2713 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype, snapshot_length,
2714 FALSE /* compressed */, shb_hdr, idb_inf, &err);
2720 /* We couldn't set up to write to the capture file. */
2723 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2724 cmdarg_err("Capture files can't be written in that format.");
2727 case WTAP_ERR_UNSUPPORTED_ENCAP:
2728 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2729 cmdarg_err("The capture file being read can't be written as a "
2730 "\"%s\" file.", wtap_file_type_short_string(out_file_type));
2733 case WTAP_ERR_CANT_OPEN:
2734 cmdarg_err("The %s couldn't be created for some "
2735 "unknown reason.", save_file_string);
2738 case WTAP_ERR_SHORT_WRITE:
2739 cmdarg_err("A full header couldn't be written to the %s.",
2744 cmdarg_err("The %s could not be created: %s.", save_file_string,
2745 wtap_strerror(err));
2751 if (print_packet_info) {
2752 if (!write_preamble(cf)) {
2754 show_print_file_io_error(err);
2761 if (pdh && out_file_name_res) {
2762 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
2763 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
2764 wtap_file_type_short_string(out_file_type));
2768 /* Do we have any tap listeners with filters? */
2769 filtering_tap_listeners = have_filtering_tap_listeners();
2771 /* Get the union of the flags for all tap listeners. */
2772 tap_flags = union_of_tap_listener_flags();
2774 if (perform_two_pass_analysis) {
2776 int old_max_packet_count = max_packet_count;
2778 /* Allocate a frame_data_sequence for all the frames. */
2779 cf->frames = new_frame_data_sequence();
2781 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2782 if (process_packet_first_pass(cf, data_offset, wtap_phdr(cf->wth),
2783 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2784 /* Stop reading if we have the maximum number of packets;
2785 * When the -c option has not been used, max_packet_count
2786 * starts at 0, which practically means, never stop reading.
2787 * (unless we roll over max_packet_count ?)
2789 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2790 err = 0; /* This is not an error */
2796 /* Close the sequential I/O side, to free up memory it requires. */
2797 wtap_sequential_close(cf->wth);
2799 /* Allow the protocol dissectors to free up memory that they
2800 * don't need after the sequential run-through of the packets. */
2801 postseq_cleanup_all_protocols();
2803 max_packet_count = old_max_packet_count;
2805 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
2806 fdata = frame_data_sequence_find(cf->frames, framenum);
2807 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->pseudo_header,
2808 cf->pd, fdata->cap_len, &err, &err_info)) {
2809 if (process_packet_second_pass(cf, fdata,
2810 &cf->pseudo_header, cf->pd,
2811 filtering_tap_listeners, tap_flags)) {
2812 /* Either there's no read filtering or this packet passed the
2813 filter, so, if we're writing to a capture file, write
2816 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2817 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2819 /* Error writing to a capture file */
2822 case WTAP_ERR_UNSUPPORTED_ENCAP:
2824 * This is a problem with the particular frame we're writing;
2825 * note that, and give the frame number.
2827 * XXX - framenum is not necessarily the frame number in
2828 * the input file if there was a read filter.
2831 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
2832 framenum, cf->filename,
2833 wtap_file_type_short_string(out_file_type));
2837 show_capture_file_io_error(save_file, err, FALSE);
2840 wtap_dump_close(pdh, &err);
2845 /* Stop reading if we have the maximum number of packets;
2846 * When the -c option has not been used, max_packet_count
2847 * starts at 0, which practically means, never stop reading.
2848 * (unless we roll over max_packet_count ?)
2850 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2851 err = 0; /* This is not an error */
2860 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2863 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2864 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2865 filtering_tap_listeners, tap_flags)) {
2866 /* Either there's no read filtering or this packet passed the
2867 filter, so, if we're writing to a capture file, write
2870 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2871 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2873 /* Error writing to a capture file */
2876 case WTAP_ERR_UNSUPPORTED_ENCAP:
2878 * This is a problem with the particular frame we're writing;
2879 * note that, and give the frame number.
2882 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
2883 framenum, cf->filename,
2884 wtap_file_type_short_string(out_file_type));
2888 show_capture_file_io_error(save_file, err, FALSE);
2891 wtap_dump_close(pdh, &err);
2896 /* Stop reading if we have the maximum number of packets;
2897 * When the -c option has not been used, max_packet_count
2898 * starts at 0, which practically means, never stop reading.
2899 * (unless we roll over max_packet_count ?)
2901 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2902 err = 0; /* This is not an error */
2911 * Print a message noting that the read failed somewhere along the line.
2913 * If we're printing packet data, and the standard output and error are
2914 * going to the same place, flush the standard output, so everything
2915 * buffered up is written, and then print a newline to the standard error
2916 * before printing the error message, to separate it from the packet
2917 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
2918 * the _fstat() documentation at Microsoft doesn't indicate whether
2919 * st_ino is even supported.)
2922 if (print_packet_info) {
2923 struct stat stat_stdout, stat_stderr;
2925 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
2926 if (stat_stdout.st_dev == stat_stderr.st_dev &&
2927 stat_stdout.st_ino == stat_stderr.st_ino) {
2929 fprintf(stderr, "\n");
2936 case WTAP_ERR_UNSUPPORTED:
2937 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
2938 cf->filename, err_info);
2942 case WTAP_ERR_UNSUPPORTED_ENCAP:
2943 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2944 cf->filename, err_info);
2948 case WTAP_ERR_CANT_READ:
2949 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
2953 case WTAP_ERR_SHORT_READ:
2954 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
2958 case WTAP_ERR_BAD_FILE:
2959 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
2960 cf->filename, err_info);
2964 case WTAP_ERR_DECOMPRESS:
2965 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
2966 "(%s)", cf->filename, err_info);
2970 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
2971 cf->filename, wtap_strerror(err));
2974 if (save_file != NULL) {
2975 /* Now close the capture file. */
2976 if (!wtap_dump_close(pdh, &err))
2977 show_capture_file_io_error(save_file, err, TRUE);
2980 if (save_file != NULL) {
2981 /* Now close the capture file. */
2982 if (!wtap_dump_close(pdh, &err))
2983 show_capture_file_io_error(save_file, err, TRUE);
2985 if (print_packet_info) {
2986 if (!write_finale()) {
2988 show_print_file_io_error(err);
2995 wtap_close(cf->wth);
2998 g_free(save_file_string);
3005 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
3006 union wtap_pseudo_header *pseudo_header, const guchar *pd,
3007 gboolean filtering_tap_listeners, guint tap_flags)
3010 gboolean create_proto_tree;
3015 /* Count this packet. */
3018 /* If we're not running a display filter and we're not printing any
3019 packet information, we don't need to do a dissection. This means
3020 that all packets can be marked as 'passed'. */
3023 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3025 /* If we're going to print packet information, or we're going to
3026 run a read filter, or we're going to process taps, set up to
3027 do a dissection and do so. */
3028 if (do_dissection) {
3029 if (print_packet_info && gbl_resolv_flags)
3030 /* Grab any resolved addresses */
3031 host_name_lookup_process(NULL);
3033 if (cf->rfcode || verbose || filtering_tap_listeners ||
3034 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3035 create_proto_tree = TRUE;
3037 create_proto_tree = FALSE;
3039 /* The protocol tree will be "visible", i.e., printed, only if we're
3040 printing packet details, which is true if we're printing stuff
3041 ("print_packet_info" is true) and we're in verbose mode ("verbose"
3043 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
3045 /* If we're running a read filter, prime the epan_dissect_t with that
3048 epan_dissect_prime_dfilter(&edt, cf->rfcode);
3050 col_custom_prime_edt(&edt, &cf->cinfo);
3052 tap_queue_init(&edt);
3054 /* We only need the columns if either
3056 1) some tap needs the columns
3060 2) we're printing packet info but we're *not* verbose; in verbose
3061 mode, we print the protocol tree, not the protocol summary. */
3062 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
3067 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3068 &first_ts, &prev_dis_ts, &prev_cap_ts);
3070 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
3072 tap_push_tapped_queue(&edt);
3074 /* Run the read filter if we have one. */
3076 passed = dfilter_apply_edt(cf->rfcode, &edt);
3080 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
3082 /* Process this packet. */
3083 if (print_packet_info) {
3084 /* We're printing packet information; print the information for
3087 print_packet(cf, &edt);
3089 print_packet(cf, NULL);
3091 /* The ANSI C standard does not appear to *require* that a line-buffered
3092 stream be flushed to the host environment whenever a newline is
3093 written, it just says that, on such a stream, characters "are
3094 intended to be transmitted to or from the host environment as a
3095 block when a new-line character is encountered".
3097 The Visual C++ 6.0 C implementation doesn't do what is intended;
3098 even if you set a stream to be line-buffered, it still doesn't
3099 flush the buffer at the end of every line.
3101 So, if the "-l" flag was specified, we flush the standard output
3102 at the end of a packet. This will do the right thing if we're
3103 printing packet summary lines, and, as we print the entire protocol
3104 tree for a single packet without waiting for anything to happen,
3105 it should be as good as line-buffered mode if we're printing
3106 protocol trees. (The whole reason for the "-l" flag in either
3107 tcpdump or TShark is to allow the output of a live capture to
3108 be piped to a program or script and to have that script see the
3109 information for the packet as soon as it's printed, rather than
3110 having to wait until a standard I/O buffer fills up. */
3114 if (ferror(stdout)) {
3115 show_print_file_io_error(errno);
3121 if (do_dissection) {
3122 epan_dissect_cleanup(&edt);
3123 frame_data_cleanup(&fdata);
3129 write_preamble(capture_file *cf)
3131 switch (output_action) {
3134 return print_preamble(print_stream, cf ? cf->filename : NULL);
3138 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3140 write_psml_preamble(stdout);
3141 return !ferror(stdout);
3144 write_fields_preamble(output_fields, stdout);
3145 return !ferror(stdout);
3148 g_assert_not_reached();
3154 get_line_buf(size_t len)
3156 static char *line_bufp = NULL;
3157 static size_t line_buf_len = 256;
3158 size_t new_line_buf_len;
3160 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3161 new_line_buf_len *= 2)
3163 if (line_bufp == NULL) {
3164 line_buf_len = new_line_buf_len;
3165 line_bufp = g_malloc(line_buf_len + 1);
3167 if (new_line_buf_len > line_buf_len) {
3168 line_buf_len = new_line_buf_len;
3169 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
3176 print_columns(capture_file *cf)
3183 line_bufp = get_line_buf(256);
3186 for (i = 0; i < cf->cinfo.num_cols; i++) {
3187 /* Skip columns not marked as visible. */
3188 if (!get_column_visible(i))
3190 switch (cf->cinfo.col_fmt[i]) {
3194 * Don't print this if we're doing a live capture from a network
3195 * interface - if we're doing a live capture, you won't be
3196 * able to look at the capture in the future (it's not being
3197 * saved anywhere), so the frame numbers are unlikely to be
3200 * (XXX - it might be nice to be able to save and print at
3201 * the same time, sort of like an "Update list of packets
3202 * in real time" capture in Wireshark.)
3204 if (global_capture_opts.ifaces->len > 0)
3207 column_len = strlen(cf->cinfo.col_data[i]);
3210 line_bufp = get_line_buf(buf_offset + column_len);
3211 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%3s", cf->cinfo.col_data[i]);
3217 case COL_ABS_DATE_TIME:
3219 case COL_UTC_DATE_TIME: /* XXX - wider */
3220 column_len = strlen(cf->cinfo.col_data[i]);
3221 if (column_len < 10)
3223 line_bufp = get_line_buf(buf_offset + column_len);
3224 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%10s", cf->cinfo.col_data[i]);
3230 case COL_DEF_DL_SRC:
3231 case COL_RES_DL_SRC:
3232 case COL_UNRES_DL_SRC:
3233 case COL_DEF_NET_SRC:
3234 case COL_RES_NET_SRC:
3235 case COL_UNRES_NET_SRC:
3236 column_len = strlen(cf->cinfo.col_data[i]);
3237 if (column_len < 12)
3239 line_bufp = get_line_buf(buf_offset + column_len);
3240 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%12s", cf->cinfo.col_data[i]);
3246 case COL_DEF_DL_DST:
3247 case COL_RES_DL_DST:
3248 case COL_UNRES_DL_DST:
3249 case COL_DEF_NET_DST:
3250 case COL_RES_NET_DST:
3251 case COL_UNRES_NET_DST:
3252 column_len = strlen(cf->cinfo.col_data[i]);
3253 if (column_len < 12)
3255 line_bufp = get_line_buf(buf_offset + column_len);
3256 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%-12s", cf->cinfo.col_data[i]);
3260 column_len = strlen(cf->cinfo.col_data[i]);
3261 line_bufp = get_line_buf(buf_offset + column_len);
3262 g_strlcat(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len + 1);
3265 buf_offset += column_len;
3266 if (i != cf->cinfo.num_cols - 1) {
3268 * This isn't the last column, so we need to print a
3269 * separator between this column and the next.
3271 * If we printed a network source and are printing a
3272 * network destination of the same type next, separate
3273 * them with " -> "; if we printed a network destination
3274 * and are printing a network source of the same type
3275 * next, separate them with " <- "; otherwise separate them
3278 * We add enough space to the buffer for " <- " or " -> ",
3279 * even if we're only adding " ".
3281 line_bufp = get_line_buf(buf_offset + 4);
3282 switch (cf->cinfo.col_fmt[i]) {
3287 switch (cf->cinfo.col_fmt[i + 1]) {
3292 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3297 g_strlcat(line_bufp + buf_offset, " ", 5);
3303 case COL_DEF_DL_SRC:
3304 case COL_RES_DL_SRC:
3305 case COL_UNRES_DL_SRC:
3306 switch (cf->cinfo.col_fmt[i + 1]) {
3308 case COL_DEF_DL_DST:
3309 case COL_RES_DL_DST:
3310 case COL_UNRES_DL_DST:
3311 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3316 g_strlcat(line_bufp + buf_offset, " ", 5);
3322 case COL_DEF_NET_SRC:
3323 case COL_RES_NET_SRC:
3324 case COL_UNRES_NET_SRC:
3325 switch (cf->cinfo.col_fmt[i + 1]) {
3327 case COL_DEF_NET_DST:
3328 case COL_RES_NET_DST:
3329 case COL_UNRES_NET_DST:
3330 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3335 g_strlcat(line_bufp + buf_offset, " ", 5);
3344 switch (cf->cinfo.col_fmt[i + 1]) {
3349 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3354 g_strlcat(line_bufp + buf_offset, " ", 5);
3360 case COL_DEF_DL_DST:
3361 case COL_RES_DL_DST:
3362 case COL_UNRES_DL_DST:
3363 switch (cf->cinfo.col_fmt[i + 1]) {
3365 case COL_DEF_DL_SRC:
3366 case COL_RES_DL_SRC:
3367 case COL_UNRES_DL_SRC:
3368 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3373 g_strlcat(line_bufp + buf_offset, " ", 5);
3379 case COL_DEF_NET_DST:
3380 case COL_RES_NET_DST:
3381 case COL_UNRES_NET_DST:
3382 switch (cf->cinfo.col_fmt[i + 1]) {
3384 case COL_DEF_NET_SRC:
3385 case COL_RES_NET_SRC:
3386 case COL_UNRES_NET_SRC:
3387 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3392 g_strlcat(line_bufp + buf_offset, " ", 5);
3399 g_strlcat(line_bufp + buf_offset, " ", 5);
3405 return print_line(print_stream, 0, line_bufp);
3409 print_packet(capture_file *cf, epan_dissect_t *edt)
3411 print_args_t print_args;
3414 /* Print the information in the protocol tree. */
3415 switch (output_action) {
3418 print_args.to_file = TRUE;
3419 print_args.format = print_format;
3420 print_args.print_summary = !verbose;
3421 print_args.print_hex = verbose && print_hex;
3422 print_args.print_formfeed = FALSE;
3423 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
3425 /* init the packet range */
3426 packet_range_init(&print_args.range);
3428 if (!proto_tree_print(&print_args, edt, print_stream))
3431 /* "print_hex_data()" will put out a leading blank line, as well
3432 as a trailing one; print one here, to separate the packets,
3433 only if "print_hex_data()" won't be called. */
3434 if (!print_line(print_stream, 0, separator))
3440 proto_tree_write_pdml(edt, stdout);
3442 return !ferror(stdout);
3444 proto_tree_write_fields(output_fields, edt, stdout);
3446 return !ferror(stdout);
3449 /* Just fill in the columns. */
3450 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3452 /* Now print them. */
3453 switch (output_action) {
3456 if (!print_columns(cf))
3461 proto_tree_write_psml(edt, stdout);
3462 return !ferror(stdout);
3463 case WRITE_FIELDS: /*No non-verbose "fields" format */
3464 g_assert_not_reached();
3469 if (!print_hex_data(print_stream, edt))
3471 if (!print_line(print_stream, 0, ""))
3480 switch (output_action) {
3483 return print_finale(print_stream);
3487 write_pdml_finale(stdout);
3489 write_psml_finale(stdout);
3490 return !ferror(stdout);
3493 write_fields_finale(output_fields, stdout);
3494 return !ferror(stdout);
3497 g_assert_not_reached();
3503 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3507 char err_msg[2048+1];
3509 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3513 /* The open succeeded. Fill in the information for this file. */
3515 /* Cleanup all data structures used for dissection. */
3516 cleanup_dissection();
3517 /* Initialize all data structures used for dissection. */
3521 cf->f_datalen = 0; /* not used, but set it anyway */
3523 /* Set the file name because we need it to set the follow stream filter.
3524 XXX - is that still true? We need it for other reasons, though,
3526 cf->filename = g_strdup(fname);
3528 /* Indicate whether it's a permanent or temporary file. */
3529 cf->is_tempfile = is_tempfile;
3531 /* No user changes yet. */
3532 cf->unsaved_changes = FALSE;
3534 cf->cd_t = wtap_file_type(cf->wth);
3536 cf->drops_known = FALSE;
3538 cf->snap = wtap_snapshot_length(cf->wth);
3539 if (cf->snap == 0) {
3540 /* Snapshot length not known. */
3541 cf->has_snap = FALSE;
3542 cf->snap = WTAP_MAX_PACKET_SIZE;
3544 cf->has_snap = TRUE;
3545 nstime_set_zero(&cf->elapsed_time);
3546 nstime_set_unset(&first_ts);
3547 nstime_set_unset(&prev_dis_ts);
3548 nstime_set_unset(&prev_cap_ts);
3550 cf->state = FILE_READ_IN_PROGRESS;
3552 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3553 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3558 g_snprintf(err_msg, sizeof err_msg,
3559 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3560 cmdarg_err("%s", err_msg);
3565 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3567 char *save_file_string;
3569 save_file_string = output_file_description(fname);
3574 cmdarg_err("Not all the packets could be written to the %s because there is "
3575 "no space left on the file system.",
3581 cmdarg_err("Not all the packets could be written to the %s because you are "
3582 "too close to, or over your disk quota.",
3587 case WTAP_ERR_CANT_CLOSE:
3588 cmdarg_err("The %s couldn't be closed for some unknown reason.",
3592 case WTAP_ERR_SHORT_WRITE:
3593 cmdarg_err("Not all the packets could be written to the %s.",
3599 cmdarg_err("The %s could not be closed: %s.", save_file_string,
3600 wtap_strerror(err));
3602 cmdarg_err("An error occurred while writing to the %s: %s.",
3603 save_file_string, wtap_strerror(err));
3607 g_free(save_file_string);
3611 show_print_file_io_error(int err)
3616 cmdarg_err("Not all the packets could be printed because there is "
3617 "no space left on the file system.");
3622 cmdarg_err("Not all the packets could be printed because you are "
3623 "too close to, or over your disk quota.");
3628 cmdarg_err("An error occurred while printing packets: %s.",
3635 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
3639 static char errmsg_errno[1024+1];
3642 /* Wiretap error. */
3645 case WTAP_ERR_NOT_REGULAR_FILE:
3646 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
3649 case WTAP_ERR_RANDOM_OPEN_PIPE:
3650 /* Seen only when opening a capture file for reading. */
3651 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
3654 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
3655 /* Seen only when opening a capture file for reading. */
3656 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
3659 case WTAP_ERR_UNSUPPORTED:
3660 /* Seen only when opening a capture file for reading. */
3661 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3662 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
3665 errmsg = errmsg_errno;
3668 case WTAP_ERR_CANT_WRITE_TO_PIPE:
3669 /* Seen only when opening a capture file for writing. */
3670 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3671 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
3672 "written to a pipe.", wtap_file_type_short_string(file_type));
3673 errmsg = errmsg_errno;
3676 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3677 /* Seen only when opening a capture file for writing. */
3678 errmsg = "TShark doesn't support writing capture files in that format.";
3681 case WTAP_ERR_UNSUPPORTED_ENCAP:
3683 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3684 "TShark can't save this capture as a \"%s\" file.",
3685 wtap_file_type_short_string(file_type));
3687 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3688 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3692 errmsg = errmsg_errno;
3695 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3697 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3698 "TShark can't save this capture as a \"%s\" file.",
3699 wtap_file_type_short_string(file_type));
3700 errmsg = errmsg_errno;
3702 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3705 case WTAP_ERR_BAD_FILE:
3706 /* Seen only when opening a capture file for reading. */
3707 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3708 "The file \"%%s\" appears to be damaged or corrupt.\n"
3711 errmsg = errmsg_errno;
3714 case WTAP_ERR_CANT_OPEN:
3716 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3718 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3721 case WTAP_ERR_SHORT_READ:
3722 errmsg = "The file \"%s\" appears to have been cut short"
3723 " in the middle of a packet or other data.";
3726 case WTAP_ERR_SHORT_WRITE:
3727 errmsg = "A full header couldn't be written to the file \"%s\".";
3730 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
3731 errmsg = "This file type cannot be written as a compressed file.";
3734 case WTAP_ERR_DECOMPRESS:
3735 /* Seen only when opening a capture file for reading. */
3736 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3737 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
3740 errmsg = errmsg_errno;
3744 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3745 "The file \"%%s\" could not be %s: %s.",
3746 for_writing ? "created" : "opened",
3747 wtap_strerror(err));
3748 errmsg = errmsg_errno;
3752 errmsg = file_open_error_message(err, for_writing);
3757 * Open/create errors are reported with an console message in TShark.
3760 open_failure_message(const char *filename, int err, gboolean for_writing)
3762 fprintf(stderr, "tshark: ");
3763 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3764 fprintf(stderr, "\n");
3769 * General errors are reported with an console message in TShark.
3772 failure_message(const char *msg_format, va_list ap)
3774 fprintf(stderr, "tshark: ");
3775 vfprintf(stderr, msg_format, ap);
3776 fprintf(stderr, "\n");
3780 * Read errors are reported with an console message in TShark.
3783 read_failure_message(const char *filename, int err)
3785 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3786 filename, g_strerror(err));
3790 * Write errors are reported with an console message in TShark.
3793 write_failure_message(const char *filename, int err)
3795 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3796 filename, g_strerror(err));
3800 * Print to the standard error. This is a command-line tool, so there's
3801 * no need to pop up a console.
3804 vfprintf_stderr(const char *fmt, va_list ap)
3806 vfprintf(stderr, fmt, ap);
3810 fprintf_stderr(const char *fmt, ...)
3815 vfprintf_stderr(fmt, ap);
3820 * Report an error in command-line arguments.
3823 cmdarg_err(const char *fmt, ...)
3828 failure_message(fmt, ap);
3833 * Report additional information for an error in command-line arguments.
3836 cmdarg_err_cont(const char *fmt, ...)
3841 vfprintf(stderr, fmt, ap);
3842 fprintf(stderr, "\n");