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 */
273 #ifdef HAVE_PCAP_REMOTE
274 fprintf(output, "RPCAP options:\n");
275 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
277 /*fprintf(output, "\n");*/
278 fprintf(output, "Input file:\n");
279 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
281 fprintf(output, "\n");
282 fprintf(output, "Processing:\n");
283 fprintf(output, " -2 perform a two-pass analysis\n");
284 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
285 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
286 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
287 fprintf(output, " -d %s ...\n", decode_as_arg_template);
288 fprintf(output, " \"Decode As\", see the man page for details\n");
289 fprintf(output, " Example: tcp.port==8888,http\n");
290 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
291 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
293 /*fprintf(output, "\n");*/
294 fprintf(output, "Output:\n");
295 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
296 fprintf(output, " (or to the standard output for \"-\")\n");
297 fprintf(output, " -C <config profile> start with specified configuration profile\n");
298 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
299 fprintf(output, " an empty \"-F\" option will list the file types\n");
300 fprintf(output, " -V add output of packet tree (Packet Details)\n");
301 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
302 fprintf(output, " separated\n");
303 fprintf(output, " -P print packets even when writing to a file\n");
304 fprintf(output, " -S <separator> the line separator to print between packets\n");
305 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
306 fprintf(output, " -T pdml|ps|psml|text|fields\n");
307 fprintf(output, " format of text output (def: text)\n");
308 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
309 fprintf(output, " this option can be repeated to print multiple fields\n");
310 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
311 fprintf(output, " header=y|n switch headers on and off\n");
312 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
313 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
314 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
315 fprintf(output, " aggregator\n");
316 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
317 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
318 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
319 fprintf(output, " -l flush standard output after each packet\n");
320 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
321 fprintf(output, " -W n Save extra information in the file, if supported.\n");
322 fprintf(output, " n = write network address resolution information\n");
323 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
324 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
326 fprintf(output, "\n");
327 fprintf(output, "Miscellaneous:\n");
328 fprintf(output, " -h display this help and exit\n");
329 fprintf(output, " -v display version info and exit\n");
330 fprintf(output, " -o <name>:<value> ... override preference setting\n");
331 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
332 fprintf(output, " -G [report] dump one of several available reports and exit\n");
333 fprintf(output, " default report=\"fields\"\n");
334 fprintf(output, " use \"-G ?\" for more help\n");
338 glossary_option_help(void)
344 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
346 fprintf(output, "\n");
347 fprintf(output, "Usage: tshark -G [report]\n");
348 fprintf(output, "\n");
349 fprintf(output, "Glossary table reports:\n");
350 fprintf(output, " -G [fields] dump glossary in original format and exit\n");
351 fprintf(output, " -G fields2 dump glossary in format 2 and exit\n");
352 fprintf(output, " -G fields3 dump glossary in format 3 and exit\n");
353 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
354 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
355 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
356 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
357 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
358 fprintf(output, "\n");
359 fprintf(output, "Preference reports:\n");
360 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
361 fprintf(output, " -G currentprefs dump current preferences and exit\n");
362 fprintf(output, "\n");
367 * For a dissector table, print on the stream described by output,
368 * its short name (which is what's used in the "-d" option) and its
372 display_dissector_table_names(const char *table_name, const char *ui_name,
375 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
379 * For a dissector handle, print on the stream described by output,
380 * the filter name (which is what's used in the "-d" option) and the full
381 * name for the protocol that corresponds to this handle.
384 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
387 const gchar* proto_filter_name;
388 const gchar* proto_ui_name;
390 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
392 if (proto_id != -1) {
393 proto_filter_name = proto_get_protocol_filter_name(proto_id);
394 proto_ui_name = proto_get_protocol_name(proto_id);
395 g_assert(proto_filter_name != NULL);
396 g_assert(proto_ui_name != NULL);
398 fprintf((FILE *)output, "\t%s (%s)\n",
405 * The protocol_name_search structure is used by find_protocol_name_func()
406 * to pass parameters and store results
408 struct protocol_name_search{
409 gchar *searched_name; /* Protocol filter name we are looking for */
410 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
411 guint nb_match; /* How many dissectors matched searched_name */
413 typedef struct protocol_name_search *protocol_name_search_t;
416 * This function parses all dissectors associated with a table to find the
417 * one whose protocol has the specified filter name. It is called
418 * as a reference function in a call to dissector_table_foreach_handle.
419 * The name we are looking for, as well as the results, are stored in the
420 * protocol_name_search struct pointed to by user_data.
421 * If called using dissector_table_foreach_handle, we actually parse the
422 * whole list of dissectors.
425 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
429 const gchar *protocol_filter_name;
430 protocol_name_search_t search_info;
434 search_info = (protocol_name_search_t)user_data;
436 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
437 if (proto_id != -1) {
438 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
439 g_assert(protocol_filter_name != NULL);
440 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
442 if (search_info->nb_match == 0) {
443 /* Record this handle only if this is the first match */
444 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
446 search_info->nb_match++;
452 * Print all layer type names supported.
453 * We send the output to the stream described by the handle output.
457 fprint_all_layer_types(FILE *output)
460 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
464 * Print all protocol names supported for a specific layer type.
465 * table_name contains the layer type name in which the search is performed.
466 * We send the output to the stream described by the handle output.
470 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
473 dissector_table_foreach_handle(table_name,
474 display_dissector_names,
479 * The function below parses the command-line parameters for the decode as
480 * feature (a string pointer by cl_param).
481 * It checks the format of the command-line, searches for a matching table
482 * and dissector. If a table/dissector match is not found, we display a
483 * summary of the available tables/dissectors (on stderr) and return FALSE.
484 * If everything is fine, we get the "Decode as" preference activated,
485 * then we return TRUE.
488 add_decode_as(const gchar *cl_param)
492 gchar *decoded_param;
493 gchar *remaining_param;
495 gchar *dissector_str;
496 dissector_handle_t dissector_matching;
497 dissector_table_t table_matching;
498 ftenum_t dissector_table_selector_type;
499 struct protocol_name_search user_protocol_name;
501 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
504 decoded_param = g_strdup(cl_param);
505 g_assert(decoded_param);
508 /* The lines below will parse this string (modifying it) to extract all
509 necessary information. Note that decoded_param is still needed since
510 strings are not copied - we just save pointers. */
512 /* This section extracts a layer type (table_name) from decoded_param */
513 table_name = decoded_param; /* Layer type string starts from beginning */
515 remaining_param = strchr(table_name, '=');
516 if (remaining_param == NULL) {
517 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
518 /* If the argument does not follow the template, carry on anyway to check
519 if the table name is at least correct. If remaining_param is NULL,
520 we'll exit anyway further down */
523 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
526 /* Remove leading and trailing spaces from the table name */
527 while ( table_name[0] == ' ' )
529 while ( table_name[strlen(table_name) - 1] == ' ' )
530 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
532 /* The following part searches a table matching with the layer type specified */
533 table_matching = NULL;
535 /* Look for the requested table */
536 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
537 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
540 table_matching = find_dissector_table(table_name);
541 if (!table_matching) {
542 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
546 if (!table_matching) {
547 /* Display a list of supported layer types to help the user, if the
548 specified layer type was not found */
549 cmdarg_err("Valid layer types are:");
550 fprint_all_layer_types(stderr);
552 if (remaining_param == NULL || !table_matching) {
553 /* Exit if the layer type was not found, or if no '=' separator was found
555 g_free(decoded_param);
559 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
560 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
563 remaining_param++; /* Move to the second '=' */
564 *remaining_param = '\0'; /* Remove the second '=' */
566 remaining_param++; /* Position after the layer type string */
568 /* This section extracts a selector value (selector_str) from decoded_param */
570 selector_str = remaining_param; /* Next part starts with the selector number */
572 remaining_param = strchr(selector_str, ',');
573 if (remaining_param == NULL) {
574 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
575 /* If the argument does not follow the template, carry on anyway to check
576 if the selector value is at least correct. If remaining_param is NULL,
577 we'll exit anyway further down */
580 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
583 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
585 switch (dissector_table_selector_type) {
591 /* The selector for this table is an unsigned number. Parse it as such.
592 There's no need to remove leading and trailing spaces from the
593 selector number string, because sscanf will do that for us. */
594 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
595 cmdarg_err("Invalid selector number \"%s\"", selector_str);
596 g_free(decoded_param);
603 /* The selector for this table is a string. */
607 /* There are currently no dissector tables with any types other
608 than the ones listed above. */
609 g_assert_not_reached();
612 if (remaining_param == NULL) {
613 /* Exit if no ',' separator was found (see above) */
614 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
615 fprint_all_protocols_for_layer_types(stderr, table_name);
616 g_free(decoded_param);
620 remaining_param++; /* Position after the selector number string */
622 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
624 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
626 /* Remove leading and trailing spaces from the dissector name */
627 while ( dissector_str[0] == ' ' )
629 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
630 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
632 dissector_matching = NULL;
634 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
635 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 */
636 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
639 user_protocol_name.nb_match = 0;
640 user_protocol_name.searched_name = dissector_str;
641 user_protocol_name.matched_handle = NULL;
643 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 */
645 if (user_protocol_name.nb_match != 0) {
646 dissector_matching = user_protocol_name.matched_handle;
647 if (user_protocol_name.nb_match > 1) {
648 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
652 /* OK, check whether the problem is that there isn't any such
653 protocol, or that there is but it's not specified as a protocol
654 that's valid for that dissector table.
655 Note, we don't exit here, but dissector_matching will remain NULL,
657 if (proto_get_id_by_filter_name(dissector_str) == -1) {
658 /* No such protocol */
659 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
661 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
662 dissector_str, table_name);
667 if (!dissector_matching) {
668 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
669 fprint_all_protocols_for_layer_types(stderr, table_name);
670 g_free(decoded_param);
674 /* This is the end of the code that parses the command-line options.
675 All information is now stored in the variables:
679 The above variables that are strings are still pointing to areas within
680 decoded_parm. decoded_parm thus still needs to be kept allocated in
681 until we stop needing these variables
682 decoded_param will be deallocated at each exit point of this function */
685 /* We now have a pointer to the handle for the requested dissector
686 (requested protocol) inside the variable dissector_matching */
687 switch (dissector_table_selector_type) {
693 /* The selector for this table is an unsigned number. */
694 dissector_change_uint(table_name, selector, dissector_matching);
699 /* The selector for this table is a string. */
700 dissector_change_string(table_name, selector_str, dissector_matching);
704 /* There are currently no dissector tables with any types other
705 than the ones listed above. */
706 g_assert_not_reached();
708 g_free(decoded_param); /* "Decode As" rule has been successfully added */
713 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
714 const gchar *message, gpointer user_data)
716 /* ignore log message, if log_level isn't interesting based
717 upon the console log preferences.
718 If the preferences haven't been loaded loaded yet, display the
721 The default console_log_level preference value is such that only
722 ERROR, CRITICAL and WARNING level messages are processed;
723 MESSAGE, INFO and DEBUG level messages are ignored.
725 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
726 ERROR and CRITICAL level messages so the current code is a behavioral
727 change. The current behavior is the same as in Wireshark.
729 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
730 prefs.console_log_level != 0) {
734 g_log_default_handler(log_domain, log_level, message, user_data);
739 output_file_description(const char *fname)
741 char *save_file_string;
743 /* Get a string that describes what we're writing to */
744 if (strcmp(fname, "-") == 0) {
745 /* We're writing to the standard output */
746 save_file_string = g_strdup("standard output");
748 /* We're writing to a file with the name in save_file */
749 save_file_string = g_strdup_printf("file \"%s\"", fname);
751 return save_file_string;
755 print_current_user(void) {
756 gchar *cur_user, *cur_group;
757 if (started_with_special_privs()) {
758 cur_user = get_cur_username();
759 cur_group = get_cur_groupname();
760 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
761 cur_user, cur_group);
764 if (running_with_special_privs()) {
765 fprintf(stderr, " This could be dangerous.");
767 fprintf(stderr, "\n");
772 check_capture_privs(void) {
775 /* Warn the user if npf.sys isn't loaded. */
776 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
777 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
778 "capturing or\nlisting interfaces.\n");
784 show_version(GString *comp_info_str, GString *runtime_info_str)
786 printf("TShark " VERSION "%s\n"
793 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
794 runtime_info_str->str);
798 main(int argc, char *argv[])
800 char *init_progfile_dir_error;
802 gboolean arg_error = FALSE;
808 char *gpf_path, *pf_path;
809 char *gdp_path, *dp_path;
810 int gpf_open_errno, gpf_read_errno;
811 int pf_open_errno, pf_read_errno;
812 int gdp_open_errno, gdp_read_errno;
813 int dp_open_errno, dp_read_errno;
815 volatile int exit_status = 0;
817 gboolean list_link_layer_types = FALSE;
818 gboolean start_capture = FALSE;
823 interface_options interface_opts;
825 gboolean capture_option_specified = FALSE;
827 gboolean quiet = FALSE;
828 #ifdef PCAP_NG_DEFAULT
829 volatile int out_file_type = WTAP_FILE_PCAPNG;
831 volatile int out_file_type = WTAP_FILE_PCAP;
833 volatile gboolean out_file_name_res = FALSE;
834 gchar *volatile cf_name = NULL;
835 gchar *rfilter = NULL;
836 #ifdef HAVE_PCAP_OPEN_DEAD
837 struct bpf_program fcode;
839 dfilter_t *rfcode = NULL;
842 GLogLevelFlags log_flags;
844 gchar *output_only = NULL;
846 #ifdef HAVE_PCAP_REMOTE
847 #define OPTSTRING_A "A:"
849 #define OPTSTRING_A ""
852 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
853 #define OPTSTRING_B "B:"
855 #define OPTSTRING_B ""
856 #endif /* _WIN32 or HAVE_PCAP_CREATE */
857 #else /* HAVE_LIBPCAP */
858 #define OPTSTRING_B ""
859 #endif /* HAVE_LIBPCAP */
861 #ifdef HAVE_PCAP_CREATE
862 #define OPTSTRING_I "I"
864 #define OPTSTRING_I ""
867 #define OPTSTRING "2a:" OPTSTRING_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:"
869 static const char optstring[] = OPTSTRING;
872 arg_list_utf_16to8(argc, argv);
873 #if !GLIB_CHECK_VERSION(2,31,0)
879 * Get credential information for later use.
881 init_process_policies();
884 * Attempt to get the pathname of the executable file.
886 init_progfile_dir_error = init_progfile_dir(argv[0], main);
887 if (init_progfile_dir_error != NULL) {
888 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
889 init_progfile_dir_error);
893 * In order to have the -X opts assigned before the wslua machine starts
894 * we need to call getopts before epan_init() gets called.
897 optind_initial = optind;
899 while ((opt = getopt(argc, argv, optstring)) != -1) {
901 case 'C': /* Configuration Profile */
902 if (profile_exists (optarg, FALSE)) {
903 set_profile_name (optarg);
905 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
917 optind = optind_initial;
922 /** Send All g_log messages to our own handler **/
926 G_LOG_LEVEL_CRITICAL|
931 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
933 g_log_set_handler(NULL,
935 tshark_log_handler, NULL /* user_data */);
936 g_log_set_handler(LOG_DOMAIN_MAIN,
938 tshark_log_handler, NULL /* user_data */);
941 g_log_set_handler(LOG_DOMAIN_CAPTURE,
943 tshark_log_handler, NULL /* user_data */);
944 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
946 tshark_log_handler, NULL /* user_data */);
949 initialize_funnel_ops();
952 capture_opts_init(&global_capture_opts, &cfile);
955 timestamp_set_type(TS_RELATIVE);
956 timestamp_set_precision(TS_PREC_AUTO);
957 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
959 /* Register all dissectors; we must do this before checking for the
960 "-G" flag, as the "-G" flag dumps information registered by the
961 dissectors, and we must do it before we read the preferences, in
962 case any dissectors register preferences. */
963 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
964 failure_message, open_failure_message, read_failure_message,
965 write_failure_message);
967 /* Register all tap listeners; we do this before we parse the arguments,
968 as the "-z" argument can specify a registered tap. */
970 /* we register the plugin taps before the other taps because
971 stats_tree taps plugins will be registered as tap listeners
972 by stats_tree_stat.c and need to registered before that */
974 register_all_plugin_tap_listeners();
976 register_all_tap_listeners();
978 /* If invoked with the "-G" flag, we dump out information based on
979 the argument to the "-G" flag; if no argument is specified,
980 for backwards compatibility we dump out a glossary of display
983 XXX - we do this here, for now, to support "-G" with no arguments.
984 If none of our build or other processes uses "-G" with no arguments,
985 we can just process it with the other arguments. */
986 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
987 proto_initialize_all_prefixes();
990 proto_registrar_dump_fields(1);
992 if (strcmp(argv[2], "fields") == 0)
993 proto_registrar_dump_fields(1);
994 else if (strcmp(argv[2], "fields2") == 0)
995 proto_registrar_dump_fields(2);
996 else if (strcmp(argv[2], "fields3") == 0)
997 proto_registrar_dump_fields(3);
998 else if (strcmp(argv[2], "protocols") == 0)
999 proto_registrar_dump_protocols();
1000 else if (strcmp(argv[2], "values") == 0)
1001 proto_registrar_dump_values();
1002 else if (strcmp(argv[2], "ftypes") == 0)
1003 proto_registrar_dump_ftypes();
1004 else if (strcmp(argv[2], "decodes") == 0)
1005 dissector_dump_decodes();
1006 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1007 dissector_dump_heur_decodes();
1008 else if (strcmp(argv[2], "defaultprefs") == 0)
1010 else if (strcmp(argv[2], "plugins") == 0)
1012 else if (strcmp(argv[2], "?") == 0)
1013 glossary_option_help();
1014 else if (strcmp(argv[2], "-?") == 0)
1015 glossary_option_help();
1016 else if (strcmp(argv[2], "currentprefs") == 0) {
1017 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1018 &pf_open_errno, &pf_read_errno, &pf_path);
1021 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1028 /* Set the C-language locale to the native environment. */
1029 setlocale(LC_ALL, "");
1031 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1032 &pf_open_errno, &pf_read_errno, &pf_path);
1033 if (gpf_path != NULL) {
1034 if (gpf_open_errno != 0) {
1035 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1036 pf_path, g_strerror(gpf_open_errno));
1038 if (gpf_read_errno != 0) {
1039 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1040 pf_path, g_strerror(gpf_read_errno));
1043 if (pf_path != NULL) {
1044 if (pf_open_errno != 0) {
1045 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1046 g_strerror(pf_open_errno));
1048 if (pf_read_errno != 0) {
1049 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1050 pf_path, g_strerror(pf_read_errno));
1056 /* Read the disabled protocols file. */
1057 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1058 &dp_path, &dp_open_errno, &dp_read_errno);
1059 if (gdp_path != NULL) {
1060 if (gdp_open_errno != 0) {
1061 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1062 gdp_path, g_strerror(gdp_open_errno));
1064 if (gdp_read_errno != 0) {
1065 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1066 gdp_path, g_strerror(gdp_read_errno));
1070 if (dp_path != NULL) {
1071 if (dp_open_errno != 0) {
1073 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1074 g_strerror(dp_open_errno));
1076 if (dp_read_errno != 0) {
1078 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1079 g_strerror(dp_read_errno));
1084 check_capture_privs();
1086 cap_file_init(&cfile);
1088 /* Print format defaults to this. */
1089 print_format = PR_FMT_TEXT;
1091 output_fields = output_fields_new();
1093 /* Now get our args */
1094 while ((opt = getopt(argc, argv, optstring)) != -1) {
1096 case '2': /* Perform two pass analysis */
1097 perform_two_pass_analysis = TRUE;
1099 case 'a': /* autostop criteria */
1100 case 'b': /* Ringbuffer option */
1101 case 'c': /* Capture x packets */
1102 case 'f': /* capture filter */
1103 case 'i': /* Use interface x */
1104 case 'p': /* Don't capture in promiscuous mode */
1105 #ifdef HAVE_PCAP_REMOTE
1106 case 'A': /* Authentication */
1108 #ifdef HAVE_PCAP_CREATE
1109 case 'I': /* Capture in monitor mode, if available */
1111 case 's': /* Set the snapshot (capture) length */
1112 case 'w': /* Write to capture file x */
1113 case 'y': /* Set the pcap data link type */
1114 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1115 case 'B': /* Buffer size */
1116 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1118 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1123 capture_option_specified = TRUE;
1128 /* Configuration profile settings were already processed just ignore them this time*/
1130 case 'd': /* Decode as rule */
1131 if (!add_decode_as(optarg))
1134 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1135 case 'K': /* Kerberos keytab file */
1136 read_keytab_file(optarg);
1139 case 'D': /* Print a list of capture devices and exit */
1141 if_list = capture_interface_list(&err, &err_str);
1142 if (if_list == NULL) {
1144 case CANT_GET_INTERFACE_LIST:
1145 case DONT_HAVE_PCAP:
1146 cmdarg_err("%s", err_str);
1150 case NO_INTERFACES_FOUND:
1151 cmdarg_err("There are no interfaces on which a capture can be done");
1156 capture_opts_print_interfaces(if_list);
1157 free_interface_list(if_list);
1160 capture_option_specified = TRUE;
1166 output_fields_add(output_fields, optarg);
1170 if(!output_fields_set_option(output_fields, optarg)) {
1171 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1172 output_fields_list_options(stderr);
1177 out_file_type = wtap_short_string_to_file_type(optarg);
1178 if (out_file_type < 0) {
1179 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1180 list_capture_types();
1184 case 'W': /* Select extra information to save in our capture file */
1185 /* This is patterned after the -N flag which may not be the best idea. */
1186 if (strchr(optarg, 'n'))
1187 out_file_name_res = TRUE;
1189 case 'H': /* Read address to name mappings from a hosts file */
1190 if (! read_hosts_file(optarg))
1192 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1195 out_file_name_res = TRUE;
1198 case 'h': /* Print help and exit */
1202 case 'l': /* "Line-buffer" standard output */
1203 /* This isn't line-buffering, strictly speaking, it's just
1204 flushing the standard output after the information for
1205 each packet is printed; however, that should be good
1206 enough for all the purposes to which "-l" is put (and
1207 is probably actually better for "-V", as it does fewer
1210 See the comment in "process_packet()" for an explanation of
1211 why we do that, and why we don't just use "setvbuf()" to
1212 make the standard output line-buffered (short version: in
1213 Windows, "line-buffered" is the same as "fully-buffered",
1214 and the output buffer is only flushed when it fills up). */
1215 line_buffered = TRUE;
1217 case 'L': /* Print list of link-layer types and exit */
1219 list_link_layer_types = TRUE;
1221 capture_option_specified = TRUE;
1225 case 'n': /* No name resolution */
1226 gbl_resolv_flags.mac_name = FALSE;
1227 gbl_resolv_flags.network_name = FALSE;
1228 gbl_resolv_flags.transport_name = FALSE;
1229 gbl_resolv_flags.concurrent_dns = FALSE;
1231 case 'N': /* Select what types of addresses/port #s to resolve */
1232 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1233 if (badopt != '\0') {
1234 cmdarg_err("-N specifies unknown resolving option '%c';",
1236 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1240 case 'o': /* Override preference from command line */
1241 switch (prefs_set_pref(optarg)) {
1246 case PREFS_SET_SYNTAX_ERR:
1247 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1251 case PREFS_SET_NO_SUCH_PREF:
1252 case PREFS_SET_OBSOLETE:
1253 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1258 case 'q': /* Quiet */
1261 case 'r': /* Read capture file x */
1262 cf_name = g_strdup(optarg);
1264 case 'R': /* Read file filter */
1267 case 'P': /* Print packets even when writing to a file */
1268 print_packet_info = TRUE;
1270 case 'S': /* Set the line Separator to be printed between packets */
1271 separator = strdup(optarg);
1273 case 't': /* Time stamp type */
1274 if (strcmp(optarg, "r") == 0)
1275 timestamp_set_type(TS_RELATIVE);
1276 else if (strcmp(optarg, "a") == 0)
1277 timestamp_set_type(TS_ABSOLUTE);
1278 else if (strcmp(optarg, "ad") == 0)
1279 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1280 else if (strcmp(optarg, "d") == 0)
1281 timestamp_set_type(TS_DELTA);
1282 else if (strcmp(optarg, "dd") == 0)
1283 timestamp_set_type(TS_DELTA_DIS);
1284 else if (strcmp(optarg, "e") == 0)
1285 timestamp_set_type(TS_EPOCH);
1286 else if (strcmp(optarg, "u") == 0)
1287 timestamp_set_type(TS_UTC);
1288 else if (strcmp(optarg, "ud") == 0)
1289 timestamp_set_type(TS_UTC_WITH_DATE);
1291 cmdarg_err("Invalid time stamp type \"%s\"",
1293 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1294 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1298 case 'T': /* printing Type */
1299 if (strcmp(optarg, "text") == 0) {
1300 output_action = WRITE_TEXT;
1301 print_format = PR_FMT_TEXT;
1302 } else if (strcmp(optarg, "ps") == 0) {
1303 output_action = WRITE_TEXT;
1304 print_format = PR_FMT_PS;
1305 } else if (strcmp(optarg, "pdml") == 0) {
1306 output_action = WRITE_XML;
1308 } else if (strcmp(optarg, "psml") == 0) {
1309 output_action = WRITE_XML;
1311 } else if(strcmp(optarg, "fields") == 0) {
1312 output_action = WRITE_FIELDS;
1313 verbose = TRUE; /* Need full tree info */
1315 cmdarg_err("Invalid -T parameter.");
1316 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1320 case 'u': /* Seconds type */
1321 if (strcmp(optarg, "s") == 0)
1322 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1323 else if (strcmp(optarg, "hms") == 0)
1324 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1326 cmdarg_err("Invalid seconds type \"%s\"", optarg);
1327 cmdarg_err_cont("It must be \"s\" for seconds or \"hms\" for hours, minutes and seconds.");
1331 case 'v': /* Show version and exit */
1333 GString *comp_info_str;
1334 GString *runtime_info_str;
1335 /* Assemble the compile-time version information string */
1336 comp_info_str = g_string_new("Compiled ");
1337 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1339 /* Assemble the run-time version information string */
1340 runtime_info_str = g_string_new("Running ");
1341 get_runtime_version_info(runtime_info_str, NULL);
1342 show_version(comp_info_str, runtime_info_str);
1343 g_string_free(comp_info_str, TRUE);
1344 g_string_free(runtime_info_str, TRUE);
1347 case 'O': /* Only output these protocols */
1348 output_only = g_strdup(optarg);
1350 case 'V': /* Verbose */
1352 /* The user asked for a verbose output, so let's ensure they get it,
1353 * even if they're writing to a file.
1355 print_packet_info = TRUE;
1357 case 'x': /* Print packet data in hex (and ASCII) */
1359 /* The user asked for hex output, so let's ensure they get it,
1360 * even if they're writing to a file.
1362 print_packet_info = TRUE;
1367 /* We won't call the init function for the stat this soon
1368 as it would disallow MATE's fields (which are registered
1369 by the preferences set callback) from being used as
1370 part of a tap filter. Instead, we just add the argument
1371 to a list of stat arguments. */
1372 if (!process_stat_cmd_arg(optarg)) {
1373 cmdarg_err("invalid -z argument.");
1374 cmdarg_err_cont(" -z argument must be one of :");
1375 list_stat_cmd_args();
1380 case '?': /* Bad flag - print usage message */
1383 list_capture_types();
1393 /* If we specified output fields, but not the output field type... */
1394 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1395 cmdarg_err("Output fields were specified with \"-e\", "
1396 "but \"-Tfields\" was not specified.");
1398 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1399 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1400 "specified with \"-e\".");
1405 /* If no capture filter or read filter has been specified, and there are
1406 still command-line arguments, treat them as the tokens of a capture
1407 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1408 flag was specified. */
1409 if (optind < argc) {
1410 if (cf_name != NULL) {
1411 if (rfilter != NULL) {
1412 cmdarg_err("Read filters were specified both with \"-R\" "
1413 "and with additional command-line arguments.");
1416 rfilter = get_args_as_string(argc, argv, optind);
1419 if (global_capture_opts.default_options.cfilter) {
1420 cmdarg_err("A default capture filter was specified both with \"-f\""
1421 " and with additional command-line arguments.");
1424 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1425 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1426 if (interface_opts.cfilter == NULL) {
1427 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1428 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1429 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1431 cmdarg_err("A capture filter was specified both with \"-f\""
1432 " and with additional command-line arguments.");
1436 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1438 capture_option_specified = TRUE;
1444 if (!global_capture_opts.saving_to_file) {
1445 /* We're not saving the capture to a file; if "-q" wasn't specified,
1446 we should print packet information */
1448 print_packet_info = TRUE;
1450 /* We're saving to a file; if we're writing to the standard output.
1451 and we'll also be writing dissected packets to the standard
1452 output, reject the request. At best, we could redirect that
1453 to the standard error; we *can't* write both to the standard
1454 output and have either of them be useful. */
1455 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1456 cmdarg_err("You can't write both raw packet data and dissected packets"
1457 " to the standard output.");
1462 /* We're not saving the capture to a file; if "-q" wasn't specified,
1463 we should print packet information */
1465 print_packet_info = TRUE;
1468 #ifndef HAVE_LIBPCAP
1469 if (capture_option_specified)
1470 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1477 /* We don't support capture filters when reading from a capture file
1478 (the BPF compiler doesn't support all link-layer types that we
1479 support in capture files we read). */
1481 if (cf_name != NULL) {
1482 if (global_capture_opts.default_options.cfilter) {
1483 cmdarg_err("Only read filters, not capture filters, "
1484 "can be specified when reading a capture file.");
1491 if (output_action != WRITE_TEXT) {
1492 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1497 if (output_only != NULL) {
1501 cmdarg_err("-O requires -V");
1505 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1506 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1507 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1512 if (list_link_layer_types) {
1513 /* We're supposed to list the link-layer types for an interface;
1514 did the user also specify a capture file to be read? */
1516 /* Yes - that's bogus. */
1517 cmdarg_err("You can't specify -L and a capture file to be read.");
1520 /* No - did they specify a ring buffer option? */
1521 if (global_capture_opts.multi_files_on) {
1522 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1528 * "-r" was specified, so we're reading a capture file.
1529 * Capture options don't apply here.
1531 if (global_capture_opts.multi_files_on) {
1532 cmdarg_err("Multiple capture files requested, but "
1533 "a capture isn't being done.");
1536 if (global_capture_opts.has_file_duration) {
1537 cmdarg_err("Switching capture files after a time interval was specified, but "
1538 "a capture isn't being done.");
1541 if (global_capture_opts.has_ring_num_files) {
1542 cmdarg_err("A ring buffer of capture files was specified, but "
1543 "a capture isn't being done.");
1546 if (global_capture_opts.has_autostop_files) {
1547 cmdarg_err("A maximum number of capture files was specified, but "
1548 "a capture isn't being done.");
1552 /* Note: TShark now allows the restriction of a _read_ file by packet count
1553 * and byte count as well as a write file. Other autostop options remain valid
1554 * only for a write file.
1556 if (global_capture_opts.has_autostop_duration) {
1557 cmdarg_err("A maximum capture time was specified, but "
1558 "a capture isn't being done.");
1563 * "-r" wasn't specified, so we're doing a live capture.
1565 if (global_capture_opts.saving_to_file) {
1566 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1568 /* When capturing, we only support writing pcap or pcap-ng format. */
1569 if (out_file_type != WTAP_FILE_PCAP && out_file_type != WTAP_FILE_PCAPNG) {
1570 cmdarg_err("Live captures can only be saved in libpcap format.");
1573 if (global_capture_opts.multi_files_on) {
1574 /* Multiple-file mode doesn't work under certain conditions:
1575 a) it doesn't work if you're writing to the standard output;
1576 b) it doesn't work if you're writing to a pipe;
1578 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1579 cmdarg_err("Multiple capture files requested, but "
1580 "the capture is being written to the standard output.");
1583 if (global_capture_opts.output_to_pipe) {
1584 cmdarg_err("Multiple capture files requested, but "
1585 "the capture file is a pipe.");
1588 if (!global_capture_opts.has_autostop_filesize &&
1589 !global_capture_opts.has_file_duration) {
1590 cmdarg_err("Multiple capture files requested, but "
1591 "no maximum capture file size or duration was specified.");
1595 /* Currently, we don't support read filters when capturing
1596 and saving the packets. */
1597 if (rfilter != NULL) {
1598 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1602 /* They didn't specify a "-w" flag, so we won't be saving to a
1603 capture file. Check for options that only make sense if
1604 we're saving to a file. */
1605 if (global_capture_opts.has_autostop_filesize) {
1606 cmdarg_err("Maximum capture file size specified, but "
1607 "capture isn't being saved to a file.");
1610 if (global_capture_opts.multi_files_on) {
1611 cmdarg_err("Multiple capture files requested, but "
1612 "the capture isn't being saved to a file.");
1621 /* Start windows sockets */
1622 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1625 /* Notify all registered modules that have had any of their preferences
1626 changed either from one of the preferences file or from the command
1627 line that their preferences have changed. */
1630 /* At this point MATE will have registered its field array so we can
1631 have a tap filter with one of MATE's late-registered fields as part
1632 of the filter. We can now process all the "-z" arguments. */
1633 start_requested_stats();
1636 /* We currently don't support taps, or printing dissected packets,
1637 if we're writing to a pipe. */
1638 if (global_capture_opts.saving_to_file &&
1639 global_capture_opts.output_to_pipe) {
1640 if (tap_listeners_require_dissection()) {
1641 cmdarg_err("Taps aren't supported when saving to a pipe.");
1644 if (print_packet_info) {
1645 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1651 /* disabled protocols as per configuration file */
1652 if (gdp_path == NULL && dp_path == NULL) {
1653 set_disabled_protos_list();
1656 /* Build the column format array */
1657 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1660 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1661 capture_opts_trim_ring_num_files(&global_capture_opts);
1664 if (rfilter != NULL) {
1665 if (!dfilter_compile(rfilter, &rfcode)) {
1666 cmdarg_err("%s", dfilter_error_msg);
1668 #ifdef HAVE_PCAP_OPEN_DEAD
1672 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1674 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1676 " Note: That display filter code looks like a valid capture filter;");
1678 " maybe you mixed them up?");
1687 cfile.rfcode = rfcode;
1689 if (print_packet_info) {
1690 /* If we're printing as text or PostScript, we have
1691 to create a print stream. */
1692 if (output_action == WRITE_TEXT) {
1693 switch (print_format) {
1696 print_stream = print_stream_text_stdio_new(stdout);
1700 print_stream = print_stream_ps_stdio_new(stdout);
1704 g_assert_not_reached();
1709 /* We have to dissect each packet if:
1711 we're printing information about each packet;
1713 we're using a read filter on the packets;
1715 we're using any taps that need dissection. */
1716 do_dissection = print_packet_info || rfcode || tap_listeners_require_dissection();
1720 * We're reading a capture file.
1724 * Immediately relinquish any special privileges we have; we must not
1725 * be allowed to read any capture files the user running TShark
1728 relinquish_special_privs_perm();
1729 print_current_user();
1731 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1736 /* Set timestamp precision; there should arguably be a command-line
1737 option to let the user set this. */
1738 switch(wtap_file_tsprecision(cfile.wth)) {
1739 case(WTAP_FILE_TSPREC_SEC):
1740 timestamp_set_precision(TS_PREC_AUTO_SEC);
1742 case(WTAP_FILE_TSPREC_DSEC):
1743 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1745 case(WTAP_FILE_TSPREC_CSEC):
1746 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1748 case(WTAP_FILE_TSPREC_MSEC):
1749 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1751 case(WTAP_FILE_TSPREC_USEC):
1752 timestamp_set_precision(TS_PREC_AUTO_USEC);
1754 case(WTAP_FILE_TSPREC_NSEC):
1755 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1758 g_assert_not_reached();
1761 /* Process the packets in the file */
1764 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
1765 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1766 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1768 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
1771 CATCH(OutOfMemoryError) {
1775 "Sorry, but TShark has to terminate now!\n"
1777 "Some infos / workarounds can be found at:\n"
1778 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
1783 /* We still dump out the results of taps, etc., as we might have
1784 read some packets; however, we exit with an error status. */
1788 /* No capture file specified, so we're supposed to do a live capture
1789 (or get a list of link-layer types for a live capture device);
1790 do we have support for live captures? */
1792 /* trim the interface name and exit if that failed */
1793 if (!capture_opts_trim_iface(&global_capture_opts,
1794 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL)) {
1798 /* if requested, list the link layer types and exit */
1799 if (list_link_layer_types) {
1801 interface_options interface_opts;
1803 /* Get the list of link-layer types for the capture devices. */
1804 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1805 if_capabilities_t *caps;
1807 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1808 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str);
1810 cmdarg_err("%s", err_str);
1814 if (caps->data_link_types == NULL) {
1815 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
1818 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
1819 free_if_capabilities(caps);
1824 if (print_packet_info) {
1825 if (!write_preamble(NULL)) {
1826 show_print_file_io_error(errno);
1829 } else if (!quiet) {
1831 * We're not printing information for each packet, and the user
1832 * didn't ask us not to print a count of packets as they arrive,
1833 * so print that count so the user knows that packets are arriving.
1835 * XXX - what if the user wants to do a live capture, doesn't want
1836 * to save it to a file, doesn't want information printed for each
1837 * packet, does want some "-z" statistic, and wants packet counts
1838 * so they know whether they're seeing any packets?
1840 print_packet_counts = TRUE;
1843 /* For now, assume libpcap gives microsecond precision. */
1844 timestamp_set_precision(TS_PREC_AUTO_USEC);
1847 * XXX - this returns FALSE if an error occurred, but it also
1848 * returns FALSE if the capture stops because a time limit
1849 * was reached (and possibly other limits), so we can't assume
1850 * it means an error.
1852 * The capture code is a bit twisty, so it doesn't appear to
1853 * be an easy fix. We just ignore the return value for now.
1854 * Instead, pass on the exit status from the capture child.
1857 exit_status = global_capture_opts.fork_child_status;
1859 if (print_packet_info) {
1860 if (!write_finale()) {
1862 show_print_file_io_error(err);
1866 /* No - complain. */
1867 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1874 if (cfile.frames != NULL) {
1875 free_frame_data_sequence(cfile.frames);
1876 cfile.frames = NULL;
1879 draw_tap_listeners(TRUE);
1880 funnel_dump_all_text_windows();
1883 output_fields_free(output_fields);
1884 output_fields = NULL;
1889 /*#define USE_BROKEN_G_MAIN_LOOP*/
1891 #ifdef USE_BROKEN_G_MAIN_LOOP
1894 gboolean loop_running = FALSE;
1896 guint32 packet_count = 0;
1899 /* XXX - move to the right position / file */
1900 /* read from a pipe (callback) */
1901 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1903 typedef struct pipe_input_tag {
1907 pipe_input_cb_t input_cb;
1908 guint pipe_input_id;
1910 GMutex *callback_running;
1914 static pipe_input_t pipe_input;
1917 /* The timer has expired, see if there's stuff to read from the pipe,
1918 if so, do the callback */
1920 pipe_timer_cb(gpointer data)
1924 gboolean result, result1;
1926 pipe_input_t *pipe_input_p = data;
1927 gint iterations = 0;
1929 g_mutex_lock (pipe_input_p->callback_running);
1931 /* try to read data from the pipe only 5 times, to avoid blocking */
1932 while(iterations < 5) {
1933 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1935 /* Oddly enough although Named pipes don't work on win9x,
1936 PeekNamedPipe does !!! */
1937 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
1938 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1940 /* Get the child process exit status */
1941 result1 = GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
1944 /* If the Peek returned an error, or there are bytes to be read
1945 or the childwatcher thread has terminated then call the normal
1947 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1949 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1951 /* And call the real handler */
1952 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
1953 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1954 /* pipe closed, return false so that the timer is stopped */
1955 g_mutex_unlock (pipe_input_p->callback_running);
1960 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1961 /* No data, stop now */
1968 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1970 g_mutex_unlock (pipe_input_p->callback_running);
1972 /* we didn't stopped the timer, so let it run */
1979 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1982 pipe_input.source = source;
1983 pipe_input.child_process = child_process;
1984 pipe_input.user_data = user_data;
1985 pipe_input.input_cb = input_cb;
1988 #if GLIB_CHECK_VERSION(2,31,0)
1989 pipe_input.callback_running = g_malloc(sizeof(GMutex));
1990 g_mutex_init(pipe_input.callback_running);
1992 pipe_input.callback_running = g_mutex_new();
1994 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1995 do this but that doesn't cover all win32 platforms. GTK can do
1996 this but doesn't seem to work over processes. Attempt to do
1997 something similar here, start a timer and check for data on every
1999 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2000 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2011 GString *str = g_string_new("");
2012 #ifdef USE_TSHARK_SELECT
2016 struct sigaction action, oldaction;
2020 * XXX - dropping privileges is still required, until code cleanup is done
2022 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2023 * when it's done, we don't need special privileges to run tshark at all,
2024 * therefore we don't need to drop these privileges
2025 * The only thing we might want to keep is a warning if tshark is run as root,
2026 * as it's no longer necessary and potentially dangerous.
2028 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2029 * We've opened the capture device, so we shouldn't need any special
2030 * privileges any more; relinquish those privileges.
2032 * XXX - if we have saved set-user-ID support, we should give up those
2033 * privileges immediately, and then reclaim them long enough to get
2034 * a list of network interfaces and to open one, and then give them
2035 * up again, so that stuff we do while processing the argument list,
2036 * reading the user's preferences, loading and starting plugins
2037 * (especially *user* plugins), etc. is done with the user's privileges,
2038 * not special privileges.
2040 relinquish_special_privs_perm();
2041 print_current_user();
2043 /* Cleanup all data structures used for dissection. */
2044 cleanup_dissection();
2045 /* Initialize all data structures used for dissection. */
2049 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2050 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2052 /* Catch SIGINT and SIGTERM and, if we get either of them,
2053 clean up and exit. If SIGHUP isn't being ignored, catch
2054 it too and, if we get it, clean up and exit.
2056 We restart any read that was in progress, so that it doesn't
2057 disrupt reading from the sync pipe. The signal handler tells
2058 the capture child to finish; it will report that it finished,
2059 or will exit abnormally, so we'll stop reading from the sync
2060 pipe, pick up the exit status, and quit. */
2061 memset(&action, 0, sizeof(action));
2062 action.sa_handler = capture_cleanup;
2063 action.sa_flags = SA_RESTART;
2064 sigemptyset(&action.sa_mask);
2065 sigaction(SIGTERM, &action, NULL);
2066 sigaction(SIGINT, &action, NULL);
2067 sigaction(SIGHUP, NULL, &oldaction);
2068 if (oldaction.sa_handler == SIG_DFL)
2069 sigaction(SIGHUP, &action, NULL);
2072 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2073 quiet mode, report the number of packets we've captured.
2075 Again, restart any read that was in progress, so that it doesn't
2076 disrupt reading from the sync pipe. */
2077 action.sa_handler = report_counts_siginfo;
2078 action.sa_flags = SA_RESTART;
2079 sigemptyset(&action.sa_mask);
2080 sigaction(SIGINFO, &action, NULL);
2081 #endif /* SIGINFO */
2084 global_capture_opts.state = CAPTURE_PREPARING;
2086 /* Let the user know which interfaces were chosen. */
2087 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2088 interface_options interface_opts;
2090 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2091 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2092 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2093 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2096 if (global_capture_opts.ifaces->len < 2) {
2098 if (global_capture_opts.ifaces->len < 4) {
2100 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2101 interface_options interface_opts;
2103 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2105 if (global_capture_opts.ifaces->len > 2) {
2106 g_string_append_printf(str, ",");
2108 g_string_append_printf(str, " ");
2109 if (i == global_capture_opts.ifaces->len - 1) {
2110 g_string_append_printf(str, "and ");
2113 g_string_append_printf(str, "%s", interface_opts.descr);
2116 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2118 fprintf(stderr, "Capturing on %s\n", str->str);
2119 g_string_free(str, TRUE);
2121 ret = sync_pipe_start(&global_capture_opts);
2126 /* the actual capture loop
2128 * XXX - glib doesn't seem to provide any event based loop handling.
2130 * XXX - for whatever reason,
2131 * calling g_main_loop_new() ends up in 100% cpu load.
2133 * But that doesn't matter: in UNIX we can use select() to find an input
2134 * source with something to do.
2136 * But that doesn't matter because we're in a CLI (that doesn't need to
2137 * update a GUI or something at the same time) so it's OK if we block
2138 * trying to read from the pipe.
2140 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2141 * wrong (but I leave it there in case I am...).
2144 #ifdef USE_TSHARK_SELECT
2146 FD_SET(pipe_input.source, &readfds);
2149 loop_running = TRUE;
2153 while (loop_running)
2155 #ifdef USE_TSHARK_SELECT
2156 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2162 } else if (ret == 1) {
2164 /* Call the real handler */
2165 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2166 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2169 #ifdef USE_TSHARK_SELECT
2174 CATCH(OutOfMemoryError) {
2178 "Sorry, but TShark has to terminate now!\n"
2180 "Some infos / workarounds can be found at:\n"
2181 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2189 /* XXX - move the call to main_window_update() out of capture_sync.c */
2190 /* dummy for capture_sync.c to make linker happy */
2191 void main_window_update(void)
2195 /* capture child detected an error */
2197 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
2199 cmdarg_err("%s", error_msg);
2200 cmdarg_err_cont("%s", secondary_error_msg);
2204 /* capture child detected an capture filter related error */
2206 capture_input_cfilter_error_message(capture_options *capture_opts, guint i, char *error_message)
2208 dfilter_t *rfcode = NULL;
2209 interface_options interface_opts;
2211 g_assert(i < capture_opts->ifaces->len);
2212 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2214 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2216 "Invalid capture filter \"%s\" for interface %s!\n"
2218 "That string looks like a valid display filter; however, it isn't a valid\n"
2219 "capture filter (%s).\n"
2221 "Note that display filters and capture filters don't have the same syntax,\n"
2222 "so you can't use most display filter expressions as capture filters.\n"
2224 "See the User's Guide for a description of the capture filter syntax.",
2225 interface_opts.cfilter, interface_opts.descr, error_message);
2226 dfilter_free(rfcode);
2229 "Invalid capture filter \"%s\" for interface %s!\n"
2231 "That string isn't a valid capture filter (%s).\n"
2232 "See the User's Guide for a description of the capture filter syntax.",
2233 interface_opts.cfilter, interface_opts.descr, error_message);
2238 /* capture child tells us we have a new (or the first) capture file */
2240 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
2242 gboolean is_tempfile;
2245 if(capture_opts->state == CAPTURE_PREPARING) {
2246 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2248 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2250 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
2252 /* free the old filename */
2253 if (capture_opts->save_file != NULL) {
2255 /* we start a new capture file, close the old one (if we had one before) */
2256 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
2257 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
2258 wtap_close(((capture_file *) capture_opts->cf)->wth);
2260 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
2263 g_free(capture_opts->save_file);
2264 is_tempfile = FALSE;
2266 /* we didn't had a save_file before, must be a tempfile */
2270 /* save the new filename */
2271 capture_opts->save_file = g_strdup(new_file);
2273 /* if we are in real-time mode, open the new file now */
2275 /* Attempt to open the capture file and set up to read from it. */
2276 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
2280 /* Don't unlink (delete) the save file - leave it around,
2281 for debugging purposes. */
2282 g_free(capture_opts->save_file);
2283 capture_opts->save_file = NULL;
2288 capture_opts->state = CAPTURE_RUNNING;
2294 /* capture child tells us we have new packets to read */
2296 capture_input_new_packets(capture_options *capture_opts, int to_read)
2302 capture_file *cf = capture_opts->cf;
2303 gboolean filtering_tap_listeners;
2308 * Prevent a SIGINFO handler from writing to the standard error while
2309 * we're doing so or writing to the standard output; instead, have it
2310 * just set a flag telling us to print that information when we're done.
2313 #endif /* SIGINFO */
2315 /* Do we have any tap listeners with filters? */
2316 filtering_tap_listeners = have_filtering_tap_listeners();
2318 /* Get the union of the flags for all tap listeners. */
2319 tap_flags = union_of_tap_listener_flags();
2322 while (to_read-- && cf->wth) {
2323 wtap_cleareof(cf->wth);
2324 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2326 /* read from file failed, tell the capture child to stop */
2327 sync_pipe_stop(capture_opts);
2328 wtap_close(cf->wth);
2331 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2332 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2333 filtering_tap_listeners, tap_flags);
2336 /* packet successfully read and gone through the "Read Filter" */
2342 * Dumpcap's doing all the work; we're not doing any dissection.
2343 * Count all the packets it wrote.
2345 packet_count += to_read;
2348 if (print_packet_counts) {
2349 /* We're printing packet counts. */
2350 if (packet_count != 0) {
2351 fprintf(stderr, "\r%u ", packet_count);
2352 /* stderr could be line buffered */
2359 * Allow SIGINFO handlers to write.
2364 * If a SIGINFO handler asked us to write out capture counts, do so.
2368 #endif /* SIGINFO */
2374 if (!print_packet_counts) {
2375 /* Report the count only if we aren't printing a packet count
2376 as packets arrive. */
2377 fprintf(stderr, "%u packet%s captured\n", packet_count,
2378 plurality(packet_count, "", "s"));
2381 infoprint = FALSE; /* we just reported it */
2382 #endif /* SIGINFO */
2387 report_counts_siginfo(int signum _U_)
2389 int sav_errno = errno;
2390 /* If we've been told to delay printing, just set a flag asking
2391 that we print counts (if we're supposed to), otherwise print
2392 the count of packets captured (if we're supposed to). */
2399 #endif /* SIGINFO */
2402 /* capture child detected any packet drops? */
2404 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2406 if (print_packet_counts) {
2407 /* We're printing packet counts to stderr.
2408 Send a newline so that we move to the line after the packet count. */
2409 fprintf(stderr, "\n");
2413 /* We're printing packet counts to stderr.
2414 Send a newline so that we move to the line after the packet count. */
2415 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2421 * Capture child closed its side of the pipe, report any error and
2422 * do the required cleanup.
2425 capture_input_closed(capture_options *capture_opts, gchar *msg)
2427 capture_file *cf = (capture_file *) capture_opts->cf;
2430 fprintf(stderr, "tshark: %s\n", msg);
2434 if(cf != NULL && cf->wth != NULL) {
2435 wtap_close(cf->wth);
2436 if(cf->is_tempfile) {
2437 ws_unlink(cf->filename);
2440 #ifdef USE_BROKEN_G_MAIN_LOOP
2441 /*g_main_loop_quit(loop);*/
2444 loop_running = FALSE;
2453 capture_cleanup(DWORD ctrltype _U_)
2455 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2456 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2457 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2458 like SIGTERM at least when the machine's shutting down.
2460 For now, we handle them all as indications that we should clean up
2461 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2464 We must return TRUE so that no other handler - such as one that would
2465 terminate the process - gets called.
2467 XXX - for some reason, typing ^C to TShark, if you run this in
2468 a Cygwin console window in at least some versions of Cygwin,
2469 causes TShark to terminate immediately; this routine gets
2470 called, but the main loop doesn't get a chance to run and
2471 exit cleanly, at least if this is compiled with Microsoft Visual
2472 C++ (i.e., it's a property of the Cygwin console window or Bash;
2473 it happens if TShark is not built with Cygwin - for all I know,
2474 building it with Cygwin may make the problem go away). */
2476 /* tell the capture child to stop */
2477 sync_pipe_stop(&global_capture_opts);
2479 /* don't stop our own loop already here, otherwise status messages and
2480 * cleanup wouldn't be done properly. The child will indicate the stop of
2481 * everything by calling capture_input_closed() later */
2487 capture_cleanup(int signum _U_)
2489 /* tell the capture child to stop */
2490 sync_pipe_stop(&global_capture_opts);
2492 /* don't stop our own loop already here, otherwise status messages and
2493 * cleanup wouldn't be done properly. The child will indicate the stop of
2494 * everything by calling capture_input_closed() later */
2497 #endif /* HAVE_LIBPCAP */
2500 process_packet_first_pass(capture_file *cf,
2501 gint64 offset, const struct wtap_pkthdr *whdr,
2502 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2506 gboolean create_proto_tree = FALSE;
2510 /* The frame number of this packet is one more than the count of
2511 frames in this packet. */
2512 framenum = cf->count + 1;
2514 /* If we're not running a display filter and we're not printing any
2515 packet information, we don't need to do a dissection. This means
2516 that all packets can be marked as 'passed'. */
2519 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2521 /* If we're going to print packet information, or we're going to
2522 run a read filter, or we're going to process taps, set up to
2523 do a dissection and do so. */
2524 if (do_dissection) {
2525 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2526 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2527 /* Grab any resolved addresses */
2528 host_name_lookup_process(NULL);
2531 create_proto_tree = TRUE;
2533 /* The protocol tree will be "visible", i.e., printed, only if we're
2534 printing packet details, which is true if we're printing stuff
2535 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2537 epan_dissect_init(&edt, create_proto_tree, FALSE);
2539 /* If we're running a read filter, prime the epan_dissect_t with that
2542 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2544 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2545 &first_ts, &prev_dis_ts, &prev_cap_ts);
2547 epan_dissect_run(&edt, pseudo_header, pd, &fdlocal, NULL);
2549 /* Run the read filter if we have one. */
2551 passed = dfilter_apply_edt(cf->rfcode, &edt);
2555 frame_data_set_after_dissect(&fdlocal, &cum_bytes, &prev_dis_ts);
2556 frame_data_sequence_add(cf->frames, &fdlocal);
2561 epan_dissect_cleanup(&edt);
2567 process_packet_second_pass(capture_file *cf, frame_data *fdata,
2568 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2569 gboolean filtering_tap_listeners, guint tap_flags)
2571 gboolean create_proto_tree;
2576 /* If we're not running a display filter and we're not printing any
2577 packet information, we don't need to do a dissection. This means
2578 that all packets can be marked as 'passed'. */
2581 /* If we're going to print packet information, or we're going to
2582 run a read filter, or we're going to process taps, set up to
2583 do a dissection and do so. */
2584 if (do_dissection) {
2585 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2586 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2587 /* Grab any resolved addresses */
2588 host_name_lookup_process(NULL);
2590 if (cf->rfcode || verbose || filtering_tap_listeners ||
2591 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2592 create_proto_tree = TRUE;
2594 create_proto_tree = FALSE;
2596 /* The protocol tree will be "visible", i.e., printed, only if we're
2597 printing packet details, which is true if we're printing stuff
2598 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2600 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2602 /* If we're running a read filter, prime the epan_dissect_t with that
2605 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2607 col_custom_prime_edt(&edt, &cf->cinfo);
2609 tap_queue_init(&edt);
2611 /* We only need the columns if either
2613 1) some tap needs the columns
2617 2) we're printing packet info but we're *not* verbose; in verbose
2618 mode, we print the protocol tree, not the protocol summary. */
2619 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2624 epan_dissect_run(&edt, pseudo_header, pd, fdata, cinfo);
2626 tap_push_tapped_queue(&edt);
2628 /* Run the read filter if we have one. */
2630 passed = dfilter_apply_edt(cf->rfcode, &edt);
2634 /* Process this packet. */
2635 if (print_packet_info) {
2636 /* We're printing packet information; print the information for
2639 print_packet(cf, &edt);
2641 print_packet(cf, NULL);
2643 /* The ANSI C standard does not appear to *require* that a line-buffered
2644 stream be flushed to the host environment whenever a newline is
2645 written, it just says that, on such a stream, characters "are
2646 intended to be transmitted to or from the host environment as a
2647 block when a new-line character is encountered".
2649 The Visual C++ 6.0 C implementation doesn't do what is intended;
2650 even if you set a stream to be line-buffered, it still doesn't
2651 flush the buffer at the end of every line.
2653 So, if the "-l" flag was specified, we flush the standard output
2654 at the end of a packet. This will do the right thing if we're
2655 printing packet summary lines, and, as we print the entire protocol
2656 tree for a single packet without waiting for anything to happen,
2657 it should be as good as line-buffered mode if we're printing
2658 protocol trees. (The whole reason for the "-l" flag in either
2659 tcpdump or TShark is to allow the output of a live capture to
2660 be piped to a program or script and to have that script see the
2661 information for the packet as soon as it's printed, rather than
2662 having to wait until a standard I/O buffer fills up. */
2666 if (ferror(stdout)) {
2667 show_print_file_io_error(errno);
2673 if (do_dissection) {
2674 epan_dissect_cleanup(&edt);
2680 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2681 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
2684 int snapshot_length;
2688 gchar *err_info = NULL;
2690 char *save_file_string = NULL;
2691 gboolean filtering_tap_listeners;
2693 wtapng_section_t *shb_hdr;
2694 wtapng_iface_descriptions_t *idb_inf;
2697 shb_hdr = wtap_file_get_shb_info(cf->wth);
2698 idb_inf = wtap_file_get_idb_info(cf->wth);
2699 #ifdef PCAP_NG_DEFAULT
2700 if (idb_inf->number_of_interfaces > 0) {
2701 linktype = WTAP_ENCAP_PER_PACKET;
2703 linktype = wtap_file_encap(cf->wth);
2706 linktype = wtap_file_encap(cf->wth);
2708 if (save_file != NULL) {
2709 /* Get a string that describes what we're writing to */
2710 save_file_string = output_file_description(save_file);
2712 /* Set up to write to the capture file. */
2713 snapshot_length = wtap_snapshot_length(cf->wth);
2714 if (snapshot_length == 0) {
2715 /* Snapshot length of input file not known. */
2716 snapshot_length = WTAP_MAX_PACKET_SIZE;
2718 /* If we don't have an application name add Tshark */
2719 if(shb_hdr->shb_user_appl == NULL) {
2720 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_svnversion);
2721 shb_hdr->shb_user_appl = appname;
2724 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype, snapshot_length,
2725 FALSE /* compressed */, shb_hdr, idb_inf, &err);
2731 /* We couldn't set up to write to the capture file. */
2734 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2735 cmdarg_err("Capture files can't be written in that format.");
2738 case WTAP_ERR_UNSUPPORTED_ENCAP:
2739 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2740 cmdarg_err("The capture file being read can't be written as a "
2741 "\"%s\" file.", wtap_file_type_short_string(out_file_type));
2744 case WTAP_ERR_CANT_OPEN:
2745 cmdarg_err("The %s couldn't be created for some "
2746 "unknown reason.", save_file_string);
2749 case WTAP_ERR_SHORT_WRITE:
2750 cmdarg_err("A full header couldn't be written to the %s.",
2755 cmdarg_err("The %s could not be created: %s.", save_file_string,
2756 wtap_strerror(err));
2762 if (print_packet_info) {
2763 if (!write_preamble(cf)) {
2765 show_print_file_io_error(err);
2772 if (pdh && out_file_name_res) {
2773 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
2774 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
2775 wtap_file_type_short_string(out_file_type));
2779 /* Do we have any tap listeners with filters? */
2780 filtering_tap_listeners = have_filtering_tap_listeners();
2782 /* Get the union of the flags for all tap listeners. */
2783 tap_flags = union_of_tap_listener_flags();
2785 if (perform_two_pass_analysis) {
2787 int old_max_packet_count = max_packet_count;
2789 /* Allocate a frame_data_sequence for all the frames. */
2790 cf->frames = new_frame_data_sequence();
2792 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2793 if (process_packet_first_pass(cf, data_offset, wtap_phdr(cf->wth),
2794 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2795 /* Stop reading if we have the maximum number of packets;
2796 * When the -c option has not been used, max_packet_count
2797 * starts at 0, which practically means, never stop reading.
2798 * (unless we roll over max_packet_count ?)
2800 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2801 err = 0; /* This is not an error */
2807 /* Close the sequential I/O side, to free up memory it requires. */
2808 wtap_sequential_close(cf->wth);
2810 /* Allow the protocol dissectors to free up memory that they
2811 * don't need after the sequential run-through of the packets. */
2812 postseq_cleanup_all_protocols();
2814 max_packet_count = old_max_packet_count;
2816 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
2817 fdata = frame_data_sequence_find(cf->frames, framenum);
2818 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->pseudo_header,
2819 cf->pd, fdata->cap_len, &err, &err_info)) {
2820 if (process_packet_second_pass(cf, fdata,
2821 &cf->pseudo_header, cf->pd,
2822 filtering_tap_listeners, tap_flags)) {
2823 /* Either there's no read filtering or this packet passed the
2824 filter, so, if we're writing to a capture file, write
2827 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2828 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2830 /* Error writing to a capture file */
2833 case WTAP_ERR_UNSUPPORTED_ENCAP:
2835 * This is a problem with the particular frame we're writing;
2836 * note that, and give the frame number.
2838 * XXX - framenum is not necessarily the frame number in
2839 * the input file if there was a read filter.
2842 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
2843 framenum, cf->filename,
2844 wtap_file_type_short_string(out_file_type));
2848 show_capture_file_io_error(save_file, err, FALSE);
2851 wtap_dump_close(pdh, &err);
2856 /* Stop reading if we have the maximum number of packets;
2857 * When the -c option has not been used, max_packet_count
2858 * starts at 0, which practically means, never stop reading.
2859 * (unless we roll over max_packet_count ?)
2861 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2862 err = 0; /* This is not an error */
2871 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2874 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2875 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2876 filtering_tap_listeners, tap_flags)) {
2877 /* Either there's no read filtering or this packet passed the
2878 filter, so, if we're writing to a capture file, write
2881 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2882 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2884 /* Error writing to a capture file */
2887 case WTAP_ERR_UNSUPPORTED_ENCAP:
2889 * This is a problem with the particular frame we're writing;
2890 * note that, and give the frame number.
2893 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
2894 framenum, cf->filename,
2895 wtap_file_type_short_string(out_file_type));
2899 show_capture_file_io_error(save_file, err, FALSE);
2902 wtap_dump_close(pdh, &err);
2907 /* Stop reading if we have the maximum number of packets;
2908 * When the -c option has not been used, max_packet_count
2909 * starts at 0, which practically means, never stop reading.
2910 * (unless we roll over max_packet_count ?)
2912 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2913 err = 0; /* This is not an error */
2922 * Print a message noting that the read failed somewhere along the line.
2924 * If we're printing packet data, and the standard output and error are
2925 * going to the same place, flush the standard output, so everything
2926 * buffered up is written, and then print a newline to the standard error
2927 * before printing the error message, to separate it from the packet
2928 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
2929 * the _fstat() documentation at Microsoft doesn't indicate whether
2930 * st_ino is even supported.)
2933 if (print_packet_info) {
2934 struct stat stat_stdout, stat_stderr;
2936 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
2937 if (stat_stdout.st_dev == stat_stderr.st_dev &&
2938 stat_stdout.st_ino == stat_stderr.st_ino) {
2940 fprintf(stderr, "\n");
2947 case WTAP_ERR_UNSUPPORTED:
2948 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
2949 cf->filename, err_info);
2953 case WTAP_ERR_UNSUPPORTED_ENCAP:
2954 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2955 cf->filename, err_info);
2959 case WTAP_ERR_CANT_READ:
2960 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
2964 case WTAP_ERR_SHORT_READ:
2965 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
2969 case WTAP_ERR_BAD_FILE:
2970 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
2971 cf->filename, err_info);
2975 case WTAP_ERR_DECOMPRESS:
2976 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
2977 "(%s)", cf->filename, err_info);
2981 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
2982 cf->filename, wtap_strerror(err));
2985 if (save_file != NULL) {
2986 /* Now close the capture file. */
2987 if (!wtap_dump_close(pdh, &err))
2988 show_capture_file_io_error(save_file, err, TRUE);
2991 if (save_file != NULL) {
2992 /* Now close the capture file. */
2993 if (!wtap_dump_close(pdh, &err))
2994 show_capture_file_io_error(save_file, err, TRUE);
2996 if (print_packet_info) {
2997 if (!write_finale()) {
2999 show_print_file_io_error(err);
3006 wtap_close(cf->wth);
3009 g_free(save_file_string);
3016 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
3017 union wtap_pseudo_header *pseudo_header, const guchar *pd,
3018 gboolean filtering_tap_listeners, guint tap_flags)
3021 gboolean create_proto_tree;
3026 /* Count this packet. */
3029 /* If we're not running a display filter and we're not printing any
3030 packet information, we don't need to do a dissection. This means
3031 that all packets can be marked as 'passed'. */
3034 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3036 /* If we're going to print packet information, or we're going to
3037 run a read filter, or we're going to process taps, set up to
3038 do a dissection and do so. */
3039 if (do_dissection) {
3040 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3041 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3042 /* Grab any resolved addresses */
3043 host_name_lookup_process(NULL);
3045 if (cf->rfcode || verbose || filtering_tap_listeners ||
3046 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3047 create_proto_tree = TRUE;
3049 create_proto_tree = FALSE;
3051 /* The protocol tree will be "visible", i.e., printed, only if we're
3052 printing packet details, which is true if we're printing stuff
3053 ("print_packet_info" is true) and we're in verbose mode ("verbose"
3055 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
3057 /* If we're running a read filter, prime the epan_dissect_t with that
3060 epan_dissect_prime_dfilter(&edt, cf->rfcode);
3062 col_custom_prime_edt(&edt, &cf->cinfo);
3064 tap_queue_init(&edt);
3066 /* We only need the columns if either
3068 1) some tap needs the columns
3072 2) we're printing packet info but we're *not* verbose; in verbose
3073 mode, we print the protocol tree, not the protocol summary. */
3074 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
3079 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3080 &first_ts, &prev_dis_ts, &prev_cap_ts);
3082 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
3084 tap_push_tapped_queue(&edt);
3086 /* Run the read filter if we have one. */
3088 passed = dfilter_apply_edt(cf->rfcode, &edt);
3092 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
3094 /* Process this packet. */
3095 if (print_packet_info) {
3096 /* We're printing packet information; print the information for
3099 print_packet(cf, &edt);
3101 print_packet(cf, NULL);
3103 /* The ANSI C standard does not appear to *require* that a line-buffered
3104 stream be flushed to the host environment whenever a newline is
3105 written, it just says that, on such a stream, characters "are
3106 intended to be transmitted to or from the host environment as a
3107 block when a new-line character is encountered".
3109 The Visual C++ 6.0 C implementation doesn't do what is intended;
3110 even if you set a stream to be line-buffered, it still doesn't
3111 flush the buffer at the end of every line.
3113 So, if the "-l" flag was specified, we flush the standard output
3114 at the end of a packet. This will do the right thing if we're
3115 printing packet summary lines, and, as we print the entire protocol
3116 tree for a single packet without waiting for anything to happen,
3117 it should be as good as line-buffered mode if we're printing
3118 protocol trees. (The whole reason for the "-l" flag in either
3119 tcpdump or TShark is to allow the output of a live capture to
3120 be piped to a program or script and to have that script see the
3121 information for the packet as soon as it's printed, rather than
3122 having to wait until a standard I/O buffer fills up. */
3126 if (ferror(stdout)) {
3127 show_print_file_io_error(errno);
3133 if (do_dissection) {
3134 epan_dissect_cleanup(&edt);
3135 frame_data_cleanup(&fdata);
3141 write_preamble(capture_file *cf)
3143 switch (output_action) {
3146 return print_preamble(print_stream, cf ? cf->filename : NULL);
3150 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3152 write_psml_preamble(stdout);
3153 return !ferror(stdout);
3156 write_fields_preamble(output_fields, stdout);
3157 return !ferror(stdout);
3160 g_assert_not_reached();
3166 get_line_buf(size_t len)
3168 static char *line_bufp = NULL;
3169 static size_t line_buf_len = 256;
3170 size_t new_line_buf_len;
3172 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3173 new_line_buf_len *= 2)
3175 if (line_bufp == NULL) {
3176 line_buf_len = new_line_buf_len;
3177 line_bufp = g_malloc(line_buf_len + 1);
3179 if (new_line_buf_len > line_buf_len) {
3180 line_buf_len = new_line_buf_len;
3181 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
3188 print_columns(capture_file *cf)
3195 line_bufp = get_line_buf(256);
3198 for (i = 0; i < cf->cinfo.num_cols; i++) {
3199 /* Skip columns not marked as visible. */
3200 if (!get_column_visible(i))
3202 switch (cf->cinfo.col_fmt[i]) {
3206 * Don't print this if we're doing a live capture from a network
3207 * interface - if we're doing a live capture, you won't be
3208 * able to look at the capture in the future (it's not being
3209 * saved anywhere), so the frame numbers are unlikely to be
3212 * (XXX - it might be nice to be able to save and print at
3213 * the same time, sort of like an "Update list of packets
3214 * in real time" capture in Wireshark.)
3216 if (global_capture_opts.ifaces->len > 0)
3219 column_len = strlen(cf->cinfo.col_data[i]);
3222 line_bufp = get_line_buf(buf_offset + column_len);
3223 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%3s", cf->cinfo.col_data[i]);
3229 case COL_ABS_DATE_TIME:
3231 case COL_UTC_DATE_TIME: /* XXX - wider */
3232 column_len = strlen(cf->cinfo.col_data[i]);
3233 if (column_len < 10)
3235 line_bufp = get_line_buf(buf_offset + column_len);
3236 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%10s", cf->cinfo.col_data[i]);
3242 case COL_DEF_DL_SRC:
3243 case COL_RES_DL_SRC:
3244 case COL_UNRES_DL_SRC:
3245 case COL_DEF_NET_SRC:
3246 case COL_RES_NET_SRC:
3247 case COL_UNRES_NET_SRC:
3248 column_len = strlen(cf->cinfo.col_data[i]);
3249 if (column_len < 12)
3251 line_bufp = get_line_buf(buf_offset + column_len);
3252 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%12s", cf->cinfo.col_data[i]);
3258 case COL_DEF_DL_DST:
3259 case COL_RES_DL_DST:
3260 case COL_UNRES_DL_DST:
3261 case COL_DEF_NET_DST:
3262 case COL_RES_NET_DST:
3263 case COL_UNRES_NET_DST:
3264 column_len = strlen(cf->cinfo.col_data[i]);
3265 if (column_len < 12)
3267 line_bufp = get_line_buf(buf_offset + column_len);
3268 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%-12s", cf->cinfo.col_data[i]);
3272 column_len = strlen(cf->cinfo.col_data[i]);
3273 line_bufp = get_line_buf(buf_offset + column_len);
3274 g_strlcat(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len + 1);
3277 buf_offset += column_len;
3278 if (i != cf->cinfo.num_cols - 1) {
3280 * This isn't the last column, so we need to print a
3281 * separator between this column and the next.
3283 * If we printed a network source and are printing a
3284 * network destination of the same type next, separate
3285 * them with " -> "; if we printed a network destination
3286 * and are printing a network source of the same type
3287 * next, separate them with " <- "; otherwise separate them
3290 * We add enough space to the buffer for " <- " or " -> ",
3291 * even if we're only adding " ".
3293 line_bufp = get_line_buf(buf_offset + 4);
3294 switch (cf->cinfo.col_fmt[i]) {
3299 switch (cf->cinfo.col_fmt[i + 1]) {
3304 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3309 g_strlcat(line_bufp + buf_offset, " ", 5);
3315 case COL_DEF_DL_SRC:
3316 case COL_RES_DL_SRC:
3317 case COL_UNRES_DL_SRC:
3318 switch (cf->cinfo.col_fmt[i + 1]) {
3320 case COL_DEF_DL_DST:
3321 case COL_RES_DL_DST:
3322 case COL_UNRES_DL_DST:
3323 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3328 g_strlcat(line_bufp + buf_offset, " ", 5);
3334 case COL_DEF_NET_SRC:
3335 case COL_RES_NET_SRC:
3336 case COL_UNRES_NET_SRC:
3337 switch (cf->cinfo.col_fmt[i + 1]) {
3339 case COL_DEF_NET_DST:
3340 case COL_RES_NET_DST:
3341 case COL_UNRES_NET_DST:
3342 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3347 g_strlcat(line_bufp + buf_offset, " ", 5);
3356 switch (cf->cinfo.col_fmt[i + 1]) {
3361 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3366 g_strlcat(line_bufp + buf_offset, " ", 5);
3372 case COL_DEF_DL_DST:
3373 case COL_RES_DL_DST:
3374 case COL_UNRES_DL_DST:
3375 switch (cf->cinfo.col_fmt[i + 1]) {
3377 case COL_DEF_DL_SRC:
3378 case COL_RES_DL_SRC:
3379 case COL_UNRES_DL_SRC:
3380 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3385 g_strlcat(line_bufp + buf_offset, " ", 5);
3391 case COL_DEF_NET_DST:
3392 case COL_RES_NET_DST:
3393 case COL_UNRES_NET_DST:
3394 switch (cf->cinfo.col_fmt[i + 1]) {
3396 case COL_DEF_NET_SRC:
3397 case COL_RES_NET_SRC:
3398 case COL_UNRES_NET_SRC:
3399 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3404 g_strlcat(line_bufp + buf_offset, " ", 5);
3411 g_strlcat(line_bufp + buf_offset, " ", 5);
3417 return print_line(print_stream, 0, line_bufp);
3421 print_packet(capture_file *cf, epan_dissect_t *edt)
3423 print_args_t print_args;
3426 /* Print the information in the protocol tree. */
3427 switch (output_action) {
3430 /* Only initialize the fields that are actually used in proto_tree_print.
3431 * This is particularly important for .range, as that's heap memory which
3432 * we would otherwise have to g_free().
3433 print_args.to_file = TRUE;
3434 print_args.format = print_format;
3435 print_args.print_summary = !verbose;
3436 print_args.print_formfeed = FALSE;
3437 packet_range_init(&print_args.range);
3439 print_args.print_hex = verbose && print_hex;
3440 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
3442 if (!proto_tree_print(&print_args, edt, print_stream))
3445 /* "print_hex_data()" will put out a leading blank line, as well
3446 as a trailing one; print one here, to separate the packets,
3447 only if "print_hex_data()" won't be called. */
3448 if (!print_line(print_stream, 0, separator))
3454 proto_tree_write_pdml(edt, stdout);
3456 return !ferror(stdout);
3458 proto_tree_write_fields(output_fields, edt, stdout);
3460 return !ferror(stdout);
3463 /* Just fill in the columns. */
3464 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3466 /* Now print them. */
3467 switch (output_action) {
3470 if (!print_columns(cf))
3475 proto_tree_write_psml(edt, stdout);
3476 return !ferror(stdout);
3477 case WRITE_FIELDS: /*No non-verbose "fields" format */
3478 g_assert_not_reached();
3483 if (!print_hex_data(print_stream, edt))
3485 if (!print_line(print_stream, 0, ""))
3494 switch (output_action) {
3497 return print_finale(print_stream);
3501 write_pdml_finale(stdout);
3503 write_psml_finale(stdout);
3504 return !ferror(stdout);
3507 write_fields_finale(output_fields, stdout);
3508 return !ferror(stdout);
3511 g_assert_not_reached();
3517 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3521 char err_msg[2048+1];
3523 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3527 /* The open succeeded. Fill in the information for this file. */
3529 /* Cleanup all data structures used for dissection. */
3530 cleanup_dissection();
3531 /* Initialize all data structures used for dissection. */
3535 cf->f_datalen = 0; /* not used, but set it anyway */
3537 /* Set the file name because we need it to set the follow stream filter.
3538 XXX - is that still true? We need it for other reasons, though,
3540 cf->filename = g_strdup(fname);
3542 /* Indicate whether it's a permanent or temporary file. */
3543 cf->is_tempfile = is_tempfile;
3545 /* No user changes yet. */
3546 cf->unsaved_changes = FALSE;
3548 cf->cd_t = wtap_file_type(cf->wth);
3550 cf->drops_known = FALSE;
3552 cf->snap = wtap_snapshot_length(cf->wth);
3553 if (cf->snap == 0) {
3554 /* Snapshot length not known. */
3555 cf->has_snap = FALSE;
3556 cf->snap = WTAP_MAX_PACKET_SIZE;
3558 cf->has_snap = TRUE;
3559 nstime_set_zero(&cf->elapsed_time);
3560 nstime_set_unset(&first_ts);
3561 nstime_set_unset(&prev_dis_ts);
3562 nstime_set_unset(&prev_cap_ts);
3564 cf->state = FILE_READ_IN_PROGRESS;
3566 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3567 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3572 g_snprintf(err_msg, sizeof err_msg,
3573 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3574 cmdarg_err("%s", err_msg);
3579 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3581 char *save_file_string;
3583 save_file_string = output_file_description(fname);
3588 cmdarg_err("Not all the packets could be written to the %s because there is "
3589 "no space left on the file system.",
3595 cmdarg_err("Not all the packets could be written to the %s because you are "
3596 "too close to, or over your disk quota.",
3601 case WTAP_ERR_CANT_CLOSE:
3602 cmdarg_err("The %s couldn't be closed for some unknown reason.",
3606 case WTAP_ERR_SHORT_WRITE:
3607 cmdarg_err("Not all the packets could be written to the %s.",
3613 cmdarg_err("The %s could not be closed: %s.", save_file_string,
3614 wtap_strerror(err));
3616 cmdarg_err("An error occurred while writing to the %s: %s.",
3617 save_file_string, wtap_strerror(err));
3621 g_free(save_file_string);
3625 show_print_file_io_error(int err)
3630 cmdarg_err("Not all the packets could be printed because there is "
3631 "no space left on the file system.");
3636 cmdarg_err("Not all the packets could be printed because you are "
3637 "too close to, or over your disk quota.");
3642 cmdarg_err("An error occurred while printing packets: %s.",
3649 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
3653 static char errmsg_errno[1024+1];
3656 /* Wiretap error. */
3659 case WTAP_ERR_NOT_REGULAR_FILE:
3660 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
3663 case WTAP_ERR_RANDOM_OPEN_PIPE:
3664 /* Seen only when opening a capture file for reading. */
3665 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
3668 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
3669 /* Seen only when opening a capture file for reading. */
3670 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
3673 case WTAP_ERR_UNSUPPORTED:
3674 /* Seen only when opening a capture file for reading. */
3675 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3676 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
3679 errmsg = errmsg_errno;
3682 case WTAP_ERR_CANT_WRITE_TO_PIPE:
3683 /* Seen only when opening a capture file for writing. */
3684 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3685 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
3686 "written to a pipe.", wtap_file_type_short_string(file_type));
3687 errmsg = errmsg_errno;
3690 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3691 /* Seen only when opening a capture file for writing. */
3692 errmsg = "TShark doesn't support writing capture files in that format.";
3695 case WTAP_ERR_UNSUPPORTED_ENCAP:
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));
3701 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3702 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3706 errmsg = errmsg_errno;
3709 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3711 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3712 "TShark can't save this capture as a \"%s\" file.",
3713 wtap_file_type_short_string(file_type));
3714 errmsg = errmsg_errno;
3716 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3719 case WTAP_ERR_BAD_FILE:
3720 /* Seen only when opening a capture file for reading. */
3721 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3722 "The file \"%%s\" appears to be damaged or corrupt.\n"
3725 errmsg = errmsg_errno;
3728 case WTAP_ERR_CANT_OPEN:
3730 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3732 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3735 case WTAP_ERR_SHORT_READ:
3736 errmsg = "The file \"%s\" appears to have been cut short"
3737 " in the middle of a packet or other data.";
3740 case WTAP_ERR_SHORT_WRITE:
3741 errmsg = "A full header couldn't be written to the file \"%s\".";
3744 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
3745 errmsg = "This file type cannot be written as a compressed file.";
3748 case WTAP_ERR_DECOMPRESS:
3749 /* Seen only when opening a capture file for reading. */
3750 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3751 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
3754 errmsg = errmsg_errno;
3758 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3759 "The file \"%%s\" could not be %s: %s.",
3760 for_writing ? "created" : "opened",
3761 wtap_strerror(err));
3762 errmsg = errmsg_errno;
3766 errmsg = file_open_error_message(err, for_writing);
3771 * Open/create errors are reported with an console message in TShark.
3774 open_failure_message(const char *filename, int err, gboolean for_writing)
3776 fprintf(stderr, "tshark: ");
3777 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3778 fprintf(stderr, "\n");
3783 * General errors are reported with an console message in TShark.
3786 failure_message(const char *msg_format, va_list ap)
3788 fprintf(stderr, "tshark: ");
3789 vfprintf(stderr, msg_format, ap);
3790 fprintf(stderr, "\n");
3794 * Read errors are reported with an console message in TShark.
3797 read_failure_message(const char *filename, int err)
3799 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3800 filename, g_strerror(err));
3804 * Write errors are reported with an console message in TShark.
3807 write_failure_message(const char *filename, int err)
3809 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3810 filename, g_strerror(err));
3814 * Print to the standard error. This is a command-line tool, so there's
3815 * no need to pop up a console.
3818 vfprintf_stderr(const char *fmt, va_list ap)
3820 vfprintf(stderr, fmt, ap);
3824 fprintf_stderr(const char *fmt, ...)
3829 vfprintf_stderr(fmt, ap);
3834 * Report an error in command-line arguments.
3837 cmdarg_err(const char *fmt, ...)
3842 failure_message(fmt, ap);
3847 * Report additional information for an error in command-line arguments.
3850 cmdarg_err_cont(const char *fmt, ...)
3855 vfprintf(stderr, fmt, ap);
3856 fprintf(stderr, "\n");