3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
50 #ifdef HAVE_SYS_STAT_H
51 # include <sys/stat.h>
54 #ifdef NEED_STRERROR_H
55 #include "wsutil/strerror.h"
61 #include "wsutil/wsgetopt.h"
65 #include <epan/epan.h>
66 #include <epan/filesystem.h>
67 #include <wsutil/privileges.h>
68 #include <wsutil/file_util.h>
71 #include <epan/timestamp.h>
72 #include <epan/packet.h>
74 #include "disabled_protos.h"
75 #include <epan/prefs.h>
76 #include <epan/column.h>
78 #include <epan/addr_resolv.h>
80 #include "clopts_common.h"
81 #include "console_io.h"
82 #include "cmdarg_err.h"
83 #include "version_info.h"
84 #include <epan/plugins.h>
86 #include <epan/epan_dissect.h>
88 #include <epan/stat_cmd_args.h>
89 #include <epan/timestamp.h>
90 #include <epan/ex-opt.h>
93 #include "capture_ui_utils.h"
94 #include "capture_ifinfo.h"
95 #include "capture-pcap-util.h"
97 #include "capture-wpcap.h"
98 #include "capture_errs.h"
101 #include "capture_sync.h"
102 #endif /* HAVE_LIBPCAP */
104 #include <epan/funnel.h>
108 * This is the template for the decode as option; it is shared between the
109 * various functions that output the usage for this parameter.
111 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
113 static guint32 cum_bytes;
114 static nstime_t first_ts;
115 static nstime_t prev_dis_ts;
116 static nstime_t prev_cap_ts;
118 static gboolean print_packet_info; /* TRUE if we're to print packet information */
120 static gboolean perform_two_pass_analysis;
123 * The way the packet decode is to be written.
126 WRITE_TEXT, /* summary or detail text */
127 WRITE_XML, /* PDML or PSML */
128 WRITE_FIELDS /* User defined list of fields */
129 /* Add CSV and the like here */
132 static output_action_e output_action;
133 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
134 static gboolean verbose;
135 static gboolean print_hex;
136 static gboolean line_buffered;
138 static print_format_e print_format = PR_FMT_TEXT;
139 static print_stream_t *print_stream;
141 static output_fields_t* output_fields = NULL;
145 * TRUE if we're to print packet counts to keep track of captured packets.
147 static gboolean print_packet_counts;
150 static capture_options global_capture_opts;
153 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
154 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
157 static gboolean capture(void);
158 static void report_counts(void);
160 static BOOL WINAPI capture_cleanup(DWORD);
162 static void capture_cleanup(int);
164 static void report_counts_siginfo(int);
167 #endif /* HAVE_LIBPCAP */
169 static int load_cap_file(capture_file *, char *, int, int, gint64);
170 static gboolean process_packet(capture_file *cf, gint64 offset,
171 const struct wtap_pkthdr *whdr, union wtap_pseudo_header *pseudo_header,
172 const guchar *pd, gboolean filtering_tap_listeners, guint tap_flags);
173 static void show_capture_file_io_error(const char *, int, gboolean);
174 static void show_print_file_io_error(int err);
175 static gboolean write_preamble(capture_file *cf);
176 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
177 static gboolean write_finale(void);
178 static const char *cf_open_error_message(int err, gchar *err_info,
179 gboolean for_writing, int file_type);
181 static void open_failure_message(const char *filename, int err,
182 gboolean for_writing);
183 static void failure_message(const char *msg_format, va_list ap);
184 static void read_failure_message(const char *filename, int err);
185 static void write_failure_message(const char *filename, int err);
190 const char *sstr; /* The short string */
191 const char *lstr; /* The long string */
195 string_compare(gconstpointer a, gconstpointer b)
197 return strcmp(((struct string_elem *)a)->sstr,
198 ((struct string_elem *)b)->sstr);
202 string_elem_print(gpointer data, gpointer not_used _U_)
204 fprintf(stderr, " %s - %s\n",
205 ((struct string_elem *)data)->sstr,
206 ((struct string_elem *)data)->lstr);
210 list_capture_types(void) {
212 struct string_elem *captypes;
215 captypes = g_malloc(sizeof(struct string_elem) * WTAP_NUM_FILE_TYPES);
217 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
218 for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
219 if (wtap_dump_can_open(i)) {
220 captypes[i].sstr = wtap_file_type_short_string(i);
221 captypes[i].lstr = wtap_file_type_string(i);
222 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
225 g_slist_foreach(list, string_elem_print, NULL);
231 print_usage(gboolean print_ver)
238 "TShark " VERSION "%s\n"
239 "Dump and analyze network traffic.\n"
240 "See http://www.wireshark.org for more information.\n"
243 wireshark_svnversion, get_copyright_info());
247 fprintf(output, "\n");
248 fprintf(output, "Usage: tshark [options] ...\n");
249 fprintf(output, "\n");
252 fprintf(output, "Capture interface:\n");
253 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
254 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
255 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
256 fprintf(output, " -p don't capture in promiscuous mode\n");
257 #ifdef HAVE_PCAP_CREATE
258 fprintf(output, " -I capture in monitor mode, if available\n");
260 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
261 fprintf(output, " -B <buffer size> size of kernel buffer (def: 1MB)\n");
263 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
264 fprintf(output, " -D print list of interfaces and exit\n");
265 fprintf(output, " -L print list of link-layer types of iface and exit\n");
266 fprintf(output, "\n");
267 fprintf(output, "Capture stop conditions:\n");
268 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
269 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
270 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
271 fprintf(output, " files:NUM - stop after NUM files\n");
272 /*fprintf(output, "\n");*/
273 fprintf(output, "Capture output:\n");
274 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
275 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
276 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
277 #endif /* HAVE_LIBPCAP */
279 /*fprintf(output, "\n");*/
280 fprintf(output, "Input file:\n");
281 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
283 fprintf(output, "\n");
284 fprintf(output, "Processing:\n");
285 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
286 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
287 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
288 fprintf(output, " -d %s ...\n", decode_as_arg_template);
289 fprintf(output, " \"Decode As\", see the man page for details\n");
290 fprintf(output, " Example: tcp.port==8888,http\n");
292 /*fprintf(output, "\n");*/
293 fprintf(output, "Output:\n");
294 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
295 fprintf(output, " (or to the standard output for \"-\")\n");
296 fprintf(output, " -C <config profile> start with specified configuration profile\n");
297 fprintf(output, " -F <output file type> set the output file type, default is libpcap\n");
298 fprintf(output, " an empty \"-F\" option will list the file types\n");
299 fprintf(output, " -V add output of packet tree (Packet Details)\n");
300 fprintf(output, " -S display packets even when writing to a file\n");
301 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
302 fprintf(output, " -T pdml|ps|psml|text|fields\n");
303 fprintf(output, " format of text output (def: text)\n");
304 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
305 fprintf(output, " this option can be repeated to print multiple fields\n");
306 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
307 fprintf(output, " header=y|n switch headers on and off\n");
308 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
309 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
310 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as aggregator\n");
311 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
312 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
313 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
314 fprintf(output, " -l flush standard output after each packet\n");
315 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
316 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
317 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
319 fprintf(output, "\n");
320 fprintf(output, "Miscellaneous:\n");
321 fprintf(output, " -h display this help and exit\n");
322 fprintf(output, " -v display version info and exit\n");
323 fprintf(output, " -o <name>:<value> ... override preference setting\n");
324 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
325 fprintf(output, " -G [report] dump one of several available reports and exit\n");
326 fprintf(output, " default report=\"fields\"\n");
327 fprintf(output, " use \"-G ?\" for more help\n");
331 glossary_option_help(void)
337 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
339 fprintf(output, "\n");
340 fprintf(output, "Usage: tshark -G [report]\n");
341 fprintf(output, "\n");
342 fprintf(output, "Glossary table reports:\n");
343 fprintf(output, " -G [fields] dump glossary in original format and exit\n");
344 fprintf(output, " -G fields2 dump glossary in format 2 and exit\n");
345 fprintf(output, " -G fields3 dump glossary in format 3 and exit\n");
346 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
347 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
348 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
349 fprintf(output, "\n");
350 fprintf(output, "Preference reports:\n");
351 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
352 fprintf(output, " -G currentprefs dump current preferences and exit\n");
353 fprintf(output, "\n");
358 * For a dissector table, print on the stream described by output,
359 * its short name (which is what's used in the "-d" option) and its
363 display_dissector_table_names(const char *table_name, const char *ui_name,
366 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
370 * For a dissector handle, print on the stream described by output,
371 * the filter name (which is what's used in the "-d" option) and the full
372 * name for the protocol that corresponds to this handle.
375 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
378 const gchar* proto_filter_name;
379 const gchar* proto_ui_name;
381 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
383 if (proto_id != -1) {
384 proto_filter_name = proto_get_protocol_filter_name(proto_id);
385 proto_ui_name = proto_get_protocol_name(proto_id);
386 g_assert(proto_filter_name != NULL);
387 g_assert(proto_ui_name != NULL);
389 fprintf((FILE *)output, "\t%s (%s)\n",
396 * The protocol_name_search structure is used by find_protocol_name_func()
397 * to pass parameters and store results
399 struct protocol_name_search{
400 gchar *searched_name; /* Protocol filter name we are looking for */
401 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
402 guint nb_match; /* How many dissectors matched searched_name */
404 typedef struct protocol_name_search *protocol_name_search_t;
407 * This function parses all dissectors associated with a table to find the
408 * one whose protocol has the specified filter name. It is called
409 * as a reference function in a call to dissector_table_foreach_handle.
410 * The name we are looking for, as well as the results, are stored in the
411 * protocol_name_search struct pointed to by user_data.
412 * If called using dissector_table_foreach_handle, we actually parse the
413 * whole list of dissectors.
416 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
420 const gchar *protocol_filter_name;
421 protocol_name_search_t search_info;
425 search_info = (protocol_name_search_t)user_data;
427 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
428 if (proto_id != -1) {
429 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
430 g_assert(protocol_filter_name != NULL);
431 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
433 if (search_info->nb_match == 0) {
434 /* Record this handle only if this is the first match */
435 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
437 search_info->nb_match++;
443 * Print all layer type names supported.
444 * We send the output to the stream described by the handle output.
448 fprint_all_layer_types(FILE *output)
451 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
455 * Print all protocol names supported for a specific layer type.
456 * table_name contains the layer type name in which the search is performed.
457 * We send the output to the stream described by the handle output.
461 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
464 dissector_table_foreach_handle(table_name,
465 display_dissector_names,
470 * The function below parses the command-line parameters for the decode as
471 * feature (a string pointer by cl_param).
472 * It checks the format of the command-line, searches for a matching table
473 * and dissector. If a table/dissector match is not found, we display a
474 * summary of the available tables/dissectors (on stderr) and return FALSE.
475 * If everything is fine, we get the "Decode as" preference activated,
476 * then we return TRUE.
479 add_decode_as(const gchar *cl_param)
483 gchar *decoded_param;
484 gchar *remaining_param;
486 gchar *dissector_str;
487 dissector_handle_t dissector_matching;
488 dissector_table_t table_matching;
489 ftenum_t dissector_table_selector_type;
490 struct protocol_name_search user_protocol_name;
492 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
495 decoded_param = g_strdup(cl_param);
496 g_assert(decoded_param);
499 /* The lines below will parse this string (modifying it) to extract all
500 necessary information. Note that decoded_param is still needed since
501 strings are not copied - we just save pointers. */
503 /* This section extracts a layer type (table_name) from decoded_param */
504 table_name = decoded_param; /* Layer type string starts from beginning */
506 remaining_param = strchr(table_name, '=');
507 if (remaining_param == NULL) {
508 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
509 /* If the argument does not follow the template, carry on anyway to check
510 if the table name is at least correct. If remaining_param is NULL,
511 we'll exit anyway further down */
514 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
517 /* Remove leading and trailing spaces from the table name */
518 while ( table_name[0] == ' ' )
520 while ( table_name[strlen(table_name) - 1] == ' ' )
521 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
523 /* The following part searches a table matching with the layer type specified */
524 table_matching = NULL;
526 /* Look for the requested table */
527 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
528 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
531 table_matching = find_dissector_table(table_name);
532 if (!table_matching) {
533 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
537 if (!table_matching) {
538 /* Display a list of supported layer types to help the user, if the
539 specified layer type was not found */
540 cmdarg_err("Valid layer types are:");
541 fprint_all_layer_types(stderr);
543 if (remaining_param == NULL || !table_matching) {
544 /* Exit if the layer type was not found, or if no '=' separator was found
546 g_free(decoded_param);
550 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
551 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
554 remaining_param++; /* Move to the second '=' */
555 *remaining_param = '\0'; /* Remove the second '=' */
557 remaining_param++; /* Position after the layer type string */
559 /* This section extracts a selector value (selector_str) from decoded_param */
561 selector_str = remaining_param; /* Next part starts with the selector number */
563 remaining_param = strchr(selector_str, ',');
564 if (remaining_param == NULL) {
565 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
566 /* If the argument does not follow the template, carry on anyway to check
567 if the selector value is at least correct. If remaining_param is NULL,
568 we'll exit anyway further down */
571 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
574 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
576 switch (dissector_table_selector_type) {
582 /* The selector for this table is an unsigned number. Parse it as such.
583 There's no need to remove leading and trailing spaces from the
584 selector number string, because sscanf will do that for us. */
585 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
586 cmdarg_err("Invalid selector number \"%s\"", selector_str);
587 g_free(decoded_param);
595 /* The selector for this table is a string. */
599 /* There are currently no dissector tables with any types other
600 than the ones listed above. */
601 g_assert_not_reached();
604 if (remaining_param == NULL) {
605 /* Exit if no ',' separator was found (see above) */
606 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
607 fprint_all_protocols_for_layer_types(stderr, table_name);
608 g_free(decoded_param);
612 remaining_param++; /* Position after the selector number string */
614 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
616 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
618 /* Remove leading and trailing spaces from the dissector name */
619 while ( dissector_str[0] == ' ' )
621 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
622 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
624 dissector_matching = NULL;
626 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
627 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 */
628 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
631 user_protocol_name.nb_match = 0;
632 user_protocol_name.searched_name = dissector_str;
633 user_protocol_name.matched_handle = NULL;
635 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 */
637 if (user_protocol_name.nb_match != 0) {
638 dissector_matching = user_protocol_name.matched_handle;
639 if (user_protocol_name.nb_match > 1) {
640 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
644 /* OK, check whether the problem is that there isn't any such
645 protocol, or that there is but it's not specified as a protocol
646 that's valid for that dissector table.
647 Note, we don't exit here, but dissector_matching will remain NULL,
649 if (proto_get_id_by_filter_name(dissector_str) == -1) {
650 /* No such protocol */
651 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
653 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
654 dissector_str, table_name);
659 if (!dissector_matching) {
660 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
661 fprint_all_protocols_for_layer_types(stderr, table_name);
662 g_free(decoded_param);
666 /* This is the end of the code that parses the command-line options.
667 All information is now stored in the variables:
671 The above variables that are strings are still pointing to areas within
672 decoded_parm. decoded_parm thus still needs to be kept allocated in
673 until we stop needing these variables
674 decoded_param will be deallocated at each exit point of this function */
677 /* We now have a pointer to the handle for the requested dissector
678 (requested protocol) inside the variable dissector_matching */
679 switch (dissector_table_selector_type) {
685 /* The selector for this table is an unsigned number. */
686 dissector_change_uint(table_name, selector, dissector_matching);
692 /* The selector for this table is a string. */
693 dissector_change_string(table_name, selector_str, dissector_matching);
697 /* There are currently no dissector tables with any types other
698 than the ones listed above. */
699 g_assert_not_reached();
701 g_free(decoded_param); /* "Decode As" rule has been succesfully added */
706 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
707 const gchar *message, gpointer user_data)
709 /* ignore log message, if log_level isn't interesting based
710 upon the console log preferences.
711 If the preferences haven't been loaded loaded yet, display the
714 The default console_log_level preference value is such that only
715 ERROR, CRITICAL and WARNING level messages are processed;
716 MESSAGE, INFO and DEBUG level messages are ignored.
718 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
719 ERROR and CRITICAL level messages so the current code is a behavioral
720 change. The current behavior is the same as in Wireshark.
722 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
723 prefs.console_log_level != 0) {
727 g_log_default_handler(log_domain, log_level, message, user_data);
732 output_file_description(const char *fname)
734 char *save_file_string;
736 /* Get a string that describes what we're writing to */
737 if (strcmp(fname, "-") == 0) {
738 /* We're writing to the standard output */
739 save_file_string = g_strdup("standard output");
741 /* We're writing to a file with the name in save_file */
742 save_file_string = g_strdup_printf("file \"%s\"", fname);
744 return save_file_string;
748 print_current_user(void) {
749 gchar *cur_user, *cur_group;
750 if (started_with_special_privs()) {
751 cur_user = get_cur_username();
752 cur_group = get_cur_groupname();
753 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
754 cur_user, cur_group);
757 if (running_with_special_privs()) {
758 fprintf(stderr, " This could be dangerous.");
760 fprintf(stderr, "\n");
765 check_capture_privs(void) {
768 /* Warn the user if npf.sys isn't loaded. */
769 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
770 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
771 "capturing or\nlisting interfaces.\n");
777 show_version(GString *comp_info_str, GString *runtime_info_str)
779 printf("TShark " VERSION "%s\n"
786 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
787 runtime_info_str->str);
791 main(int argc, char *argv[])
793 char *init_progfile_dir_error;
795 gboolean arg_error = FALSE;
803 char *gpf_path, *pf_path;
804 char *gdp_path, *dp_path;
805 int gpf_open_errno, gpf_read_errno;
806 int pf_open_errno, pf_read_errno;
807 int gdp_open_errno, gdp_read_errno;
808 int dp_open_errno, dp_read_errno;
812 gboolean list_link_layer_types = FALSE;
813 gboolean start_capture = FALSE;
818 gboolean capture_option_specified = FALSE;
820 gboolean quiet = FALSE;
821 int out_file_type = WTAP_FILE_PCAP;
822 gchar *cf_name = NULL, *rfilter = NULL;
823 #ifdef HAVE_PCAP_OPEN_DEAD
824 struct bpf_program fcode;
826 dfilter_t *rfcode = NULL;
829 GLogLevelFlags log_flags;
833 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
834 #define OPTSTRING_B "B:"
836 #define OPTSTRING_B ""
837 #endif /* _WIN32 or HAVE_PCAP_CREATE */
838 #else /* HAVE_LIBPCAP */
839 #define OPTSTRING_B ""
840 #endif /* HAVE_LIBPCAP */
842 #ifdef HAVE_PCAP_CREATE
843 #define OPTSTRING_I "I"
845 #define OPTSTRING_I ""
848 #define OPTSTRING "a:b:" OPTSTRING_B "c:C:d:De:E:f:F:G:hi:" OPTSTRING_I "K:lLnN:o:pPqr:R:s:St:T:u:vVw:xX:y:z:"
850 static const char optstring[] = OPTSTRING;
853 /* Convert our arg list to UTF-8. */
854 wc_argv = CommandLineToArgvW(GetCommandLineW(), &wc_argc);
855 if (wc_argv && wc_argc == argc) {
856 for (i = 0; i < argc; i++) {
857 argv[i] = g_utf16_to_utf8(wc_argv[i], -1, NULL, NULL, NULL);
859 } /* XXX else bail because something is horribly, horribly wrong? */
863 * Get credential information for later use.
865 init_process_policies();
868 * Attempt to get the pathname of the executable file.
870 init_progfile_dir_error = init_progfile_dir(argv[0], main);
871 if (init_progfile_dir_error != NULL) {
872 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
873 init_progfile_dir_error);
877 * In order to have the -X opts assigned before the wslua machine starts
878 * we need to call getopts before epan_init() gets called.
881 optind_initial = optind;
883 while ((opt = getopt(argc, argv, optstring)) != -1) {
885 case 'C': /* Configuration Profile */
886 if (profile_exists (optarg, FALSE)) {
887 set_profile_name (optarg);
889 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
901 optind = optind_initial;
906 /** Send All g_log messages to our own handler **/
910 G_LOG_LEVEL_CRITICAL|
915 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
917 g_log_set_handler(NULL,
919 tshark_log_handler, NULL /* user_data */);
920 g_log_set_handler(LOG_DOMAIN_MAIN,
922 tshark_log_handler, NULL /* user_data */);
925 g_log_set_handler(LOG_DOMAIN_CAPTURE,
927 tshark_log_handler, NULL /* user_data */);
928 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
930 tshark_log_handler, NULL /* user_data */);
933 initialize_funnel_ops();
936 capture_opts_init(&global_capture_opts, &cfile);
939 timestamp_set_type(TS_RELATIVE);
940 timestamp_set_precision(TS_PREC_AUTO);
941 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
943 /* Register all dissectors; we must do this before checking for the
944 "-G" flag, as the "-G" flag dumps information registered by the
945 dissectors, and we must do it before we read the preferences, in
946 case any dissectors register preferences. */
947 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
948 failure_message, open_failure_message, read_failure_message,
949 write_failure_message);
951 /* Register all tap listeners; we do this before we parse the arguments,
952 as the "-z" argument can specify a registered tap. */
954 /* we register the plugin taps before the other taps because
955 stats_tree taps plugins will be registered as tap listeners
956 by stats_tree_stat.c and need to registered before that */
958 register_all_plugin_tap_listeners();
960 register_all_tap_listeners();
962 /* Now register the preferences for any non-dissector modules.
963 We must do that before we read the preferences as well. */
964 prefs_register_modules();
966 /* If invoked with the "-G" flag, we dump out information based on
967 the argument to the "-G" flag; if no argument is specified,
968 for backwards compatibility we dump out a glossary of display
971 XXX - we do this here, for now, to support "-G" with no arguments.
972 If none of our build or other processes uses "-G" with no arguments,
973 we can just process it with the other arguments. */
974 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
975 proto_initialize_all_prefixes();
978 proto_registrar_dump_fields(1);
980 if (strcmp(argv[2], "fields") == 0)
981 proto_registrar_dump_fields(1);
982 else if (strcmp(argv[2], "fields2") == 0)
983 proto_registrar_dump_fields(2);
984 else if (strcmp(argv[2], "fields3") == 0)
985 proto_registrar_dump_fields(3);
986 else if (strcmp(argv[2], "protocols") == 0)
987 proto_registrar_dump_protocols();
988 else if (strcmp(argv[2], "values") == 0)
989 proto_registrar_dump_values();
990 else if (strcmp(argv[2], "decodes") == 0)
991 dissector_dump_decodes();
992 else if (strcmp(argv[2], "defaultprefs") == 0)
994 else if (strcmp(argv[2], "?") == 0)
995 glossary_option_help();
996 else if (strcmp(argv[2], "-?") == 0)
997 glossary_option_help();
998 else if (strcmp(argv[2], "currentprefs") == 0) {
999 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1000 &pf_open_errno, &pf_read_errno, &pf_path);
1003 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1010 /* Set the C-language locale to the native environment. */
1011 setlocale(LC_ALL, "");
1013 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1014 &pf_open_errno, &pf_read_errno, &pf_path);
1015 if (gpf_path != NULL) {
1016 if (gpf_open_errno != 0) {
1017 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1018 pf_path, strerror(gpf_open_errno));
1020 if (gpf_read_errno != 0) {
1021 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1022 pf_path, strerror(gpf_read_errno));
1025 if (pf_path != NULL) {
1026 if (pf_open_errno != 0) {
1027 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1028 strerror(pf_open_errno));
1030 if (pf_read_errno != 0) {
1031 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1032 pf_path, strerror(pf_read_errno));
1038 /* Set the name resolution code's flags from the preferences. */
1039 gbl_resolv_flags = prefs_p->name_resolve;
1041 /* Read the disabled protocols file. */
1042 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1043 &dp_path, &dp_open_errno, &dp_read_errno);
1044 if (gdp_path != NULL) {
1045 if (gdp_open_errno != 0) {
1046 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1047 gdp_path, strerror(gdp_open_errno));
1049 if (gdp_read_errno != 0) {
1050 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1051 gdp_path, strerror(gdp_read_errno));
1055 if (dp_path != NULL) {
1056 if (dp_open_errno != 0) {
1058 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1059 strerror(dp_open_errno));
1061 if (dp_read_errno != 0) {
1063 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1064 strerror(dp_read_errno));
1069 check_capture_privs();
1071 cap_file_init(&cfile);
1073 /* Print format defaults to this. */
1074 print_format = PR_FMT_TEXT;
1076 output_fields = output_fields_new();
1078 /* Now get our args */
1079 while ((opt = getopt(argc, argv, optstring)) != -1) {
1081 case 'a': /* autostop criteria */
1082 case 'b': /* Ringbuffer option */
1083 case 'c': /* Capture x packets */
1084 case 'f': /* capture filter */
1085 case 'i': /* Use interface x */
1086 case 'p': /* Don't capture in promiscuous mode */
1087 #ifdef HAVE_PCAP_CREATE
1088 case 'I': /* Capture in monitor mode, if available */
1090 case 's': /* Set the snapshot (capture) length */
1091 case 'w': /* Write to capture file x */
1092 case 'y': /* Set the pcap data link type */
1093 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1094 case 'B': /* Buffer size */
1095 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1097 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1102 capture_option_specified = TRUE;
1107 /* Configuration profile settings were already processed just ignore them this time*/
1109 case 'd': /* Decode as rule */
1110 if (!add_decode_as(optarg))
1113 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1114 case 'K': /* Kerberos keytab file */
1115 read_keytab_file(optarg);
1118 case 'D': /* Print a list of capture devices and exit */
1120 if_list = capture_interface_list(&err, &err_str);
1121 if (if_list == NULL) {
1123 case CANT_GET_INTERFACE_LIST:
1124 cmdarg_err("%s", err_str);
1128 case NO_INTERFACES_FOUND:
1129 cmdarg_err("There are no interfaces on which a capture can be done");
1134 capture_opts_print_interfaces(if_list);
1135 free_interface_list(if_list);
1138 capture_option_specified = TRUE;
1144 output_fields_add(output_fields, optarg);
1148 if(!output_fields_set_option(output_fields, optarg)) {
1149 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1150 output_fields_list_options(stderr);
1155 out_file_type = wtap_short_string_to_file_type(optarg);
1156 if (out_file_type < 0) {
1157 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1158 list_capture_types();
1162 case 'h': /* Print help and exit */
1166 case 'l': /* "Line-buffer" standard output */
1167 /* This isn't line-buffering, strictly speaking, it's just
1168 flushing the standard output after the information for
1169 each packet is printed; however, that should be good
1170 enough for all the purposes to which "-l" is put (and
1171 is probably actually better for "-V", as it does fewer
1174 See the comment in "process_packet()" for an explanation of
1175 why we do that, and why we don't just use "setvbuf()" to
1176 make the standard output line-buffered (short version: in
1177 Windows, "line-buffered" is the same as "fully-buffered",
1178 and the output buffer is only flushed when it fills up). */
1179 line_buffered = TRUE;
1181 case 'L': /* Print list of link-layer types and exit */
1183 list_link_layer_types = TRUE;
1185 capture_option_specified = TRUE;
1189 #if GLIB_CHECK_VERSION(2,10,0)
1190 case 'P': /* Perform two pass analysis */
1191 perform_two_pass_analysis = TRUE;
1194 case 'n': /* No name resolution */
1195 gbl_resolv_flags = RESOLV_NONE;
1197 case 'N': /* Select what types of addresses/port #s to resolve */
1198 if (gbl_resolv_flags == RESOLV_ALL)
1199 gbl_resolv_flags = RESOLV_NONE;
1200 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1201 if (badopt != '\0') {
1202 cmdarg_err("-N specifies unknown resolving option '%c';",
1204 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1208 case 'o': /* Override preference from command line */
1209 switch (prefs_set_pref(optarg)) {
1214 case PREFS_SET_SYNTAX_ERR:
1215 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1219 case PREFS_SET_NO_SUCH_PREF:
1220 case PREFS_SET_OBSOLETE:
1221 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1226 case 'q': /* Quiet */
1229 case 'r': /* Read capture file x */
1230 cf_name = g_strdup(optarg);
1232 case 'R': /* Read file filter */
1235 case 'S': /* show packets in real time */
1236 print_packet_info = TRUE;
1238 case 't': /* Time stamp type */
1239 if (strcmp(optarg, "r") == 0)
1240 timestamp_set_type(TS_RELATIVE);
1241 else if (strcmp(optarg, "a") == 0)
1242 timestamp_set_type(TS_ABSOLUTE);
1243 else if (strcmp(optarg, "ad") == 0)
1244 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1245 else if (strcmp(optarg, "d") == 0)
1246 timestamp_set_type(TS_DELTA);
1247 else if (strcmp(optarg, "dd") == 0)
1248 timestamp_set_type(TS_DELTA_DIS);
1249 else if (strcmp(optarg, "e") == 0)
1250 timestamp_set_type(TS_EPOCH);
1252 cmdarg_err("Invalid time stamp type \"%s\"",
1254 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1255 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1259 case 'T': /* printing Type */
1260 if (strcmp(optarg, "text") == 0) {
1261 output_action = WRITE_TEXT;
1262 print_format = PR_FMT_TEXT;
1263 } else if (strcmp(optarg, "ps") == 0) {
1264 output_action = WRITE_TEXT;
1265 print_format = PR_FMT_PS;
1266 } else if (strcmp(optarg, "pdml") == 0) {
1267 output_action = WRITE_XML;
1269 } else if (strcmp(optarg, "psml") == 0) {
1270 output_action = WRITE_XML;
1272 } else if(strcmp(optarg, "fields") == 0) {
1273 output_action = WRITE_FIELDS;
1274 verbose = TRUE; /* Need full tree info */
1276 cmdarg_err("Invalid -T parameter.");
1277 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1281 case 'u': /* Seconds type */
1282 if (strcmp(optarg, "s") == 0)
1283 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1284 else if (strcmp(optarg, "hms") == 0)
1285 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1287 cmdarg_err("Invalid seconds type \"%s\"", optarg);
1288 cmdarg_err_cont("It must be \"s\" for seconds or \"hms\" for hours, minutes and seconds.");
1292 case 'v': /* Show version and exit */
1294 GString *comp_info_str;
1295 GString *runtime_info_str;
1296 /* Assemble the compile-time version information string */
1297 comp_info_str = g_string_new("Compiled ");
1298 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1300 /* Assemble the run-time version information string */
1301 runtime_info_str = g_string_new("Running ");
1302 get_runtime_version_info(runtime_info_str, NULL);
1303 show_version(comp_info_str, runtime_info_str);
1304 g_string_free(comp_info_str, TRUE);
1305 g_string_free(runtime_info_str, TRUE);
1309 case 'V': /* Verbose */
1311 /* The user asked for a verbose output, so let's ensure they get it,
1312 * even if they're writing to a file.
1314 print_packet_info = TRUE;
1316 case 'x': /* Print packet data in hex (and ASCII) */
1318 /* The user asked for hex output, so let's ensure they get it,
1319 * even if they're writing to a file.
1321 print_packet_info = TRUE;
1326 /* We won't call the init function for the stat this soon
1327 as it would disallow MATE's fields (which are registered
1328 by the preferences set callback) from being used as
1329 part of a tap filter. Instead, we just add the argument
1330 to a list of stat arguments. */
1331 if (!process_stat_cmd_arg(optarg)) {
1332 cmdarg_err("invalid -z argument.");
1333 cmdarg_err_cont(" -z argument must be one of :");
1334 list_stat_cmd_args();
1339 case '?': /* Bad flag - print usage message */
1342 list_capture_types();
1352 /* If we specified output fields, but not the output field type... */
1353 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1354 cmdarg_err("Output fields were specified with \"-e\", "
1355 "but \"-Tfields\" was not specified.");
1357 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1358 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1359 "specified with \"-e\".");
1364 /* If no capture filter or read filter has been specified, and there are
1365 still command-line arguments, treat them as the tokens of a capture
1366 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1367 flag was specified. */
1368 if (optind < argc) {
1369 if (cf_name != NULL) {
1370 if (rfilter != NULL) {
1371 cmdarg_err("Read filters were specified both with \"-R\" "
1372 "and with additional command-line arguments");
1375 rfilter = get_args_as_string(argc, argv, optind);
1378 if (global_capture_opts.has_cfilter) {
1379 cmdarg_err("Capture filters were specified both with \"-f\""
1380 " and with additional command-line arguments");
1383 global_capture_opts.has_cfilter = TRUE;
1384 global_capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1386 capture_option_specified = TRUE;
1392 if (!global_capture_opts.saving_to_file) {
1393 /* We're not saving the capture to a file; if "-q" wasn't specified,
1394 we should print packet information */
1396 print_packet_info = TRUE;
1398 /* We're saving to a file; if we're writing to the standard output.
1399 and we'll also be writing dissected packets to the standard
1400 output, reject the request. At best, we could redirect that
1401 to the standard error; we *can't* write both to the standard
1402 output and have either of them be useful. */
1403 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1404 cmdarg_err("You can't write both raw packet data and dissected packets"
1405 " to the standard output.");
1410 /* We're not saving the capture to a file; if "-q" wasn't specified,
1411 we should print packet information */
1413 print_packet_info = TRUE;
1416 #ifndef HAVE_LIBPCAP
1417 if (capture_option_specified)
1418 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1425 /* We don't support capture filters when reading from a capture file
1426 (the BPF compiler doesn't support all link-layer types that we
1427 support in capture files we read). */
1429 if (cf_name != NULL) {
1430 if (global_capture_opts.has_cfilter) {
1431 cmdarg_err("Only read filters, not capture filters, "
1432 "can be specified when reading a capture file.");
1439 if (output_action != WRITE_TEXT) {
1440 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1446 if (list_link_layer_types) {
1447 /* We're supposed to list the link-layer types for an interface;
1448 did the user also specify a capture file to be read? */
1450 /* Yes - that's bogus. */
1451 cmdarg_err("You can't specify -L and a capture file to be read.");
1454 /* No - did they specify a ring buffer option? */
1455 if (global_capture_opts.multi_files_on) {
1456 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1462 * "-r" was specified, so we're reading a capture file.
1463 * Capture options don't apply here.
1465 if (global_capture_opts.multi_files_on) {
1466 cmdarg_err("Multiple capture files requested, but "
1467 "a capture isn't being done.");
1470 if (global_capture_opts.has_file_duration) {
1471 cmdarg_err("Switching capture files after a time interval was specified, but "
1472 "a capture isn't being done.");
1475 if (global_capture_opts.has_ring_num_files) {
1476 cmdarg_err("A ring buffer of capture files was specified, but "
1477 "a capture isn't being done.");
1480 if (global_capture_opts.has_autostop_files) {
1481 cmdarg_err("A maximum number of capture files was specified, but "
1482 "a capture isn't being done.");
1486 /* Note: TShark now allows the restriction of a _read_ file by packet count
1487 * and byte count as well as a write file. Other autostop options remain valid
1488 * only for a write file.
1490 if (global_capture_opts.has_autostop_duration) {
1491 cmdarg_err("A maximum capture time was specified, but "
1492 "a capture isn't being done.");
1497 * "-r" wasn't specified, so we're doing a live capture.
1499 if (global_capture_opts.saving_to_file) {
1500 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1502 /* When capturing, we only support writing libpcap format. */
1503 if (out_file_type != WTAP_FILE_PCAP) {
1504 cmdarg_err("Live captures can only be saved in libpcap format.");
1507 if (global_capture_opts.multi_files_on) {
1508 /* Multiple-file mode doesn't work under certain conditions:
1509 a) it doesn't work if you're writing to the standard output;
1510 b) it doesn't work if you're writing to a pipe;
1512 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1513 cmdarg_err("Multiple capture files requested, but "
1514 "the capture is being written to the standard output.");
1517 if (global_capture_opts.output_to_pipe) {
1518 cmdarg_err("Multiple capture files requested, but "
1519 "the capture file is a pipe.");
1522 if (!global_capture_opts.has_autostop_filesize &&
1523 !global_capture_opts.has_file_duration) {
1524 cmdarg_err("Multiple capture files requested, but "
1525 "no maximum capture file size or duration was specified.");
1529 /* Currently, we don't support read filters when capturing
1530 and saving the packets. */
1531 if (rfilter != NULL) {
1532 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1536 /* They didn't specify a "-w" flag, so we won't be saving to a
1537 capture file. Check for options that only make sense if
1538 we're saving to a file. */
1539 if (global_capture_opts.has_autostop_filesize) {
1540 cmdarg_err("Maximum capture file size specified, but "
1541 "capture isn't being saved to a file.");
1544 if (global_capture_opts.multi_files_on) {
1545 cmdarg_err("Multiple capture files requested, but "
1546 "the capture isn't being saved to a file.");
1555 /* Start windows sockets */
1556 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1559 /* Notify all registered modules that have had any of their preferences
1560 changed either from one of the preferences file or from the command
1561 line that their preferences have changed. */
1564 /* At this point MATE will have registered its field array so we can
1565 have a tap filter with one of MATE's late-registered fields as part
1566 of the filter. We can now process all the "-z" arguments. */
1567 start_requested_stats();
1570 /* We currently don't support taps, or printing dissected packets,
1571 if we're writing to a pipe. */
1572 if (global_capture_opts.saving_to_file &&
1573 global_capture_opts.output_to_pipe) {
1574 if (have_tap_listeners()) {
1575 cmdarg_err("Taps aren't supported when saving to a pipe.");
1578 if (print_packet_info) {
1579 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1585 /* disabled protocols as per configuration file */
1586 if (gdp_path == NULL && dp_path == NULL) {
1587 set_disabled_protos_list();
1590 /* Build the column format array */
1591 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1594 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1595 capture_opts_trim_ring_num_files(&global_capture_opts);
1598 if (rfilter != NULL) {
1599 if (!dfilter_compile(rfilter, &rfcode)) {
1600 cmdarg_err("%s", dfilter_error_msg);
1602 #ifdef HAVE_PCAP_OPEN_DEAD
1606 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1608 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1610 " Note: That display filter code looks like a valid capture filter;");
1612 " maybe you mixed them up?");
1621 cfile.rfcode = rfcode;
1623 if (print_packet_info) {
1624 /* If we're printing as text or PostScript, we have
1625 to create a print stream. */
1626 if (output_action == WRITE_TEXT) {
1627 switch (print_format) {
1630 print_stream = print_stream_text_stdio_new(stdout);
1634 print_stream = print_stream_ps_stdio_new(stdout);
1638 g_assert_not_reached();
1643 /* We have to dissect each packet if:
1645 we're printing information about each packet;
1647 we're using a read filter on the packets;
1649 we're using any taps. */
1650 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1654 * We're reading a capture file.
1658 * Immediately relinquish any special privileges we have; we must not
1659 * be allowed to read any capture files the user running TShark
1662 relinquish_special_privs_perm();
1663 print_current_user();
1665 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1670 /* Set timestamp precision; there should arguably be a command-line
1671 option to let the user set this. */
1672 switch(wtap_file_tsprecision(cfile.wth)) {
1673 case(WTAP_FILE_TSPREC_SEC):
1674 timestamp_set_precision(TS_PREC_AUTO_SEC);
1676 case(WTAP_FILE_TSPREC_DSEC):
1677 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1679 case(WTAP_FILE_TSPREC_CSEC):
1680 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1682 case(WTAP_FILE_TSPREC_MSEC):
1683 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1685 case(WTAP_FILE_TSPREC_USEC):
1686 timestamp_set_precision(TS_PREC_AUTO_USEC);
1688 case(WTAP_FILE_TSPREC_NSEC):
1689 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1692 g_assert_not_reached();
1695 /* Process the packets in the file */
1697 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type,
1698 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1699 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1701 err = load_cap_file(&cfile, NULL, out_file_type, 0, 0);
1704 /* We still dump out the results of taps, etc., as we might have
1705 read some packets; however, we exit with an error status. */
1709 /* No capture file specified, so we're supposed to do a live capture
1710 (or get a list of link-layer types for a live capture device);
1711 do we have support for live captures? */
1718 cmdarg_err("WinPcap couldn't be found.");
1719 detailed_err = cant_load_winpcap_err("TShark");
1720 cmdarg_err_cont("%s", detailed_err);
1721 g_free(detailed_err);
1726 /* trim the interface name and exit if that failed */
1727 if (!capture_opts_trim_iface(&global_capture_opts,
1728 (prefs_p->capture_device) ? get_if_name(prefs_p->capture_device) : NULL)) {
1732 /* if requested, list the link layer types and exit */
1733 if (list_link_layer_types) {
1734 /* Get the list of link-layer types for the capture device. */
1735 if_capabilities_t *caps;
1737 caps = capture_get_if_capabilities(global_capture_opts.iface,
1738 global_capture_opts.monitor_mode,
1741 cmdarg_err("%s", err_str);
1745 if (caps->data_link_types == NULL) {
1746 cmdarg_err("The capture device \"%s\" has no data link types.", global_capture_opts.iface);
1749 capture_opts_print_if_capabilities(caps,
1750 global_capture_opts.monitor_mode);
1751 free_if_capabilities(caps);
1755 if (print_packet_info) {
1756 if (!write_preamble(NULL)) {
1757 show_print_file_io_error(errno);
1760 } else if (!quiet) {
1762 * We're not printing information for each packet, and the user
1763 * didn't ask us not to print a count of packets as they arrive,
1764 * so print that count so the user knows that packets are arriving.
1766 * XXX - what if the user wants to do a live capture, doesn't want
1767 * to save it to a file, doesn't want information printed for each
1768 * packet, does want some "-z" statistic, and wants packet counts
1769 * so they know whether they're seeing any packets?
1771 print_packet_counts = TRUE;
1774 /* For now, assume libpcap gives microsecond precision. */
1775 timestamp_set_precision(TS_PREC_AUTO_USEC);
1778 * XXX - this returns FALSE if an error occurred, but it also
1779 * returns FALSE if the capture stops because a time limit
1780 * was reached (and possibly other limits), so we can't assume
1781 * it means an error.
1783 * The capture code is a bit twisty, so it doesn't appear to
1784 * be an easy fix. We just ignore the return value for now.
1785 * Instead, pass on the exit status from the capture child.
1788 exit_status = global_capture_opts.fork_child_status;
1790 if (print_packet_info) {
1791 if (!write_finale()) {
1793 show_print_file_io_error(err);
1797 /* No - complain. */
1798 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1805 #if GLIB_CHECK_VERSION(2,10,0)
1806 if (cfile.plist_start != NULL)
1807 g_slice_free_chain(frame_data, cfile.plist_start, next);
1810 draw_tap_listeners(TRUE);
1811 funnel_dump_all_text_windows();
1814 output_fields_free(output_fields);
1815 output_fields = NULL;
1820 /*#define USE_BROKEN_G_MAIN_LOOP*/
1822 #ifdef USE_BROKEN_G_MAIN_LOOP
1825 gboolean loop_running = FALSE;
1827 guint32 packet_count = 0;
1830 /* XXX - move to the right position / file */
1831 /* read from a pipe (callback) */
1832 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1834 typedef struct pipe_input_tag {
1838 pipe_input_cb_t input_cb;
1839 guint pipe_input_id;
1841 GStaticMutex callback_running;
1845 static pipe_input_t pipe_input;
1848 /* The timer has expired, see if there's stuff to read from the pipe,
1849 if so, do the callback */
1851 pipe_timer_cb(gpointer data)
1855 gboolean result, result1;
1857 pipe_input_t *pipe_input = data;
1858 gint iterations = 0;
1861 g_static_mutex_lock (&pipe_input->callback_running);
1863 /* try to read data from the pipe only 5 times, to avoid blocking */
1864 while(iterations < 5) {
1865 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1867 /* Oddly enough although Named pipes don't work on win9x,
1868 PeekNamedPipe does !!! */
1869 handle = (HANDLE) _get_osfhandle (pipe_input->source);
1870 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1872 /* Get the child process exit status */
1873 result1 = GetExitCodeProcess((HANDLE)*(pipe_input->child_process),
1876 /* If the Peek returned an error, or there are bytes to be read
1877 or the childwatcher thread has terminated then call the normal
1879 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1881 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1883 /* And call the real handler */
1884 if (!pipe_input->input_cb(pipe_input->source, pipe_input->user_data)) {
1885 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1886 /* pipe closed, return false so that the timer is stopped */
1887 g_static_mutex_unlock (&pipe_input->callback_running);
1892 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1893 /* No data, stop now */
1900 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1902 g_static_mutex_unlock (&pipe_input->callback_running);
1904 /* we didn't stopped the timer, so let it run */
1911 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1914 pipe_input.source = source;
1915 pipe_input.child_process = child_process;
1916 pipe_input.user_data = user_data;
1917 pipe_input.input_cb = input_cb;
1920 g_static_mutex_init(&pipe_input.callback_running);
1921 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1922 do this but that doesn't cover all win32 platforms. GTK can do
1923 this but doesn't seem to work over processes. Attempt to do
1924 something similar here, start a timer and check for data on every
1926 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1927 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1937 #ifdef USE_TSHARK_SELECT
1941 struct sigaction action, oldaction;
1945 * XXX - dropping privileges is still required, until code cleanup is done
1947 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1948 * when it's done, we don't need special privileges to run tshark at all,
1949 * therefore we don't need to drop these privileges
1950 * The only thing we might want to keep is a warning if tshark is run as root,
1951 * as it's no longer necessary and potentially dangerous.
1953 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1954 * We've opened the capture device, so we shouldn't need any special
1955 * privileges any more; relinquish those privileges.
1957 * XXX - if we have saved set-user-ID support, we should give up those
1958 * privileges immediately, and then reclaim them long enough to get
1959 * a list of network interfaces and to open one, and then give them
1960 * up again, so that stuff we do while processing the argument list,
1961 * reading the user's preferences, loading and starting plugins
1962 * (especially *user* plugins), etc. is done with the user's privileges,
1963 * not special privileges.
1965 relinquish_special_privs_perm();
1966 print_current_user();
1968 /* Cleanup all data structures used for dissection. */
1969 cleanup_dissection();
1970 /* Initialize all data structures used for dissection. */
1974 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
1975 SetConsoleCtrlHandler(capture_cleanup, TRUE);
1977 /* Catch SIGINT and SIGTERM and, if we get either of them,
1978 clean up and exit. If SIGHUP isn't being ignored, catch
1979 it too and, if we get it, clean up and exit.
1981 We restart any read that was in progress, so that it doesn't
1982 disrupt reading from the sync pipe. The signal handler tells
1983 the capture child to finish; it will report that it finished,
1984 or will exit abnormally, so we'll stop reading from the sync
1985 pipe, pick up the exit status, and quit. */
1986 action.sa_handler = capture_cleanup;
1987 action.sa_flags = SA_RESTART;
1988 sigemptyset(&action.sa_mask);
1989 sigaction(SIGTERM, &action, NULL);
1990 sigaction(SIGINT, &action, NULL);
1991 sigaction(SIGHUP, NULL, &oldaction);
1992 if (oldaction.sa_handler == SIG_DFL)
1993 sigaction(SIGHUP, &action, NULL);
1996 /* Catch SIGINFO and, if we get it and we're capturing to a file in
1997 quiet mode, report the number of packets we've captured.
1999 Again, restart any read that was in progress, so that it doesn't
2000 disrupt reading from the sync pipe. */
2001 action.sa_handler = report_counts_siginfo;
2002 action.sa_flags = SA_RESTART;
2003 sigemptyset(&action.sa_mask);
2004 sigaction(SIGINFO, &action, NULL);
2005 #endif /* SIGINFO */
2008 global_capture_opts.state = CAPTURE_PREPARING;
2010 /* Let the user know what interface was chosen. */
2011 global_capture_opts.iface_descr = get_interface_descriptive_name(global_capture_opts.iface);
2012 fprintf(stderr, "Capturing on %s\n", global_capture_opts.iface_descr);
2014 ret = sync_pipe_start(&global_capture_opts);
2019 /* the actual capture loop
2021 * XXX - glib doesn't seem to provide any event based loop handling.
2023 * XXX - for whatever reason,
2024 * calling g_main_loop_new() ends up in 100% cpu load.
2026 * But that doesn't matter: in UNIX we can use select() to find an input
2027 * source with something to do.
2029 * But that doesn't matter because we're in a CLI (that doesn't need to
2030 * update a GUI or something at the same time) so it's OK if we block
2031 * trying to read from the pipe.
2033 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2034 * wrong (but I leave it there in case I am...).
2037 #ifdef USE_TSHARK_SELECT
2039 FD_SET(pipe_input.source, &readfds);
2042 loop_running = TRUE;
2044 while (loop_running)
2046 #ifdef USE_TSHARK_SELECT
2047 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2053 } else if (ret == 1) {
2055 /* Call the real handler */
2056 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2057 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2060 #ifdef USE_TSHARK_SELECT
2069 /* XXX - move the call to main_window_update() out of capture_sync.c */
2070 /* dummy for capture_sync.c to make linker happy */
2071 void main_window_update(void)
2075 /* capture child detected an error */
2077 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
2079 cmdarg_err("%s", error_msg);
2080 cmdarg_err_cont("%s", secondary_error_msg);
2084 /* capture child detected an capture filter related error */
2086 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
2088 dfilter_t *rfcode = NULL;
2091 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
2093 "Invalid capture filter: \"%s\"!\n"
2095 "That string looks like a valid display filter; however, it isn't a valid\n"
2096 "capture filter (%s).\n"
2098 "Note that display filters and capture filters don't have the same syntax,\n"
2099 "so you can't use most display filter expressions as capture filters.\n"
2101 "See the User's Guide for a description of the capture filter syntax.",
2102 capture_opts->cfilter, error_message);
2103 dfilter_free(rfcode);
2106 "Invalid capture filter: \"%s\"!\n"
2108 "That string isn't a valid capture filter (%s).\n"
2109 "See the User's Guide for a description of the capture filter syntax.",
2110 capture_opts->cfilter, error_message);
2115 /* capture child tells us we have a new (or the first) capture file */
2117 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
2119 gboolean is_tempfile;
2122 if(capture_opts->state == CAPTURE_PREPARING) {
2123 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2125 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2127 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
2129 /* free the old filename */
2130 if (capture_opts->save_file != NULL) {
2132 /* we start a new capture file, close the old one (if we had one before) */
2133 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
2134 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
2135 wtap_close(((capture_file *) capture_opts->cf)->wth);
2137 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
2140 g_free(capture_opts->save_file);
2141 is_tempfile = FALSE;
2143 /* we didn't had a save_file before, must be a tempfile */
2147 /* save the new filename */
2148 capture_opts->save_file = g_strdup(new_file);
2150 /* if we are in real-time mode, open the new file now */
2152 /* Attempt to open the capture file and set up to read from it. */
2153 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
2157 /* Don't unlink (delete) the save file - leave it around,
2158 for debugging purposes. */
2159 g_free(capture_opts->save_file);
2160 capture_opts->save_file = NULL;
2165 capture_opts->state = CAPTURE_RUNNING;
2171 /* capture child tells us we have new packets to read */
2173 capture_input_new_packets(capture_options *capture_opts, int to_read)
2179 capture_file *cf = capture_opts->cf;
2180 gboolean filtering_tap_listeners;
2185 * Prevent a SIGINFO handler from writing to the standard error while
2186 * we're doing so or writing to the standard output; instead, have it
2187 * just set a flag telling us to print that information when we're done.
2190 #endif /* SIGINFO */
2192 /* Do we have any tap listeners with filters? */
2193 filtering_tap_listeners = have_filtering_tap_listeners();
2195 /* Get the union of the flags for all tap listeners. */
2196 tap_flags = union_of_tap_listener_flags();
2199 while (to_read-- && cf->wth) {
2200 wtap_cleareof(cf->wth);
2201 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2203 /* read from file failed, tell the capture child to stop */
2204 sync_pipe_stop(capture_opts);
2205 wtap_close(cf->wth);
2208 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2209 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2210 filtering_tap_listeners, tap_flags);
2213 /* packet sucessfully read and gone through the "Read Filter" */
2219 * Dumpcap's doing all the work; we're not doing any dissection.
2220 * Count all the packets it wrote.
2222 packet_count += to_read;
2225 if (print_packet_counts) {
2226 /* We're printing packet counts. */
2227 if (packet_count != 0) {
2228 fprintf(stderr, "\r%u ", packet_count);
2229 /* stderr could be line buffered */
2236 * Allow SIGINFO handlers to write.
2241 * If a SIGINFO handler asked us to write out capture counts, do so.
2245 #endif /* SIGINFO */
2251 if (!print_packet_counts) {
2252 /* Report the count only if we aren't printing a packet count
2253 as packets arrive. */
2254 fprintf(stderr, "%u packet%s captured\n", packet_count,
2255 plurality(packet_count, "", "s"));
2258 infoprint = FALSE; /* we just reported it */
2259 #endif /* SIGINFO */
2264 report_counts_siginfo(int signum _U_)
2266 int sav_errno = errno;
2267 /* If we've been told to delay printing, just set a flag asking
2268 that we print counts (if we're supposed to), otherwise print
2269 the count of packets captured (if we're supposed to). */
2276 #endif /* SIGINFO */
2279 /* capture child detected any packet drops? */
2281 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2283 if (print_packet_counts) {
2284 /* We're printing packet counts to stderr.
2285 Send a newline so that we move to the line after the packet count. */
2286 fprintf(stderr, "\n");
2290 /* We're printing packet counts to stderr.
2291 Send a newline so that we move to the line after the packet count. */
2292 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2298 * Capture child closed its side of the pipe, report any error and
2299 * do the required cleanup.
2302 capture_input_closed(capture_options *capture_opts, gchar *msg)
2305 fprintf(stderr, "tshark: %s\n", msg);
2309 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2310 wtap_close(((capture_file *) capture_opts->cf)->wth);
2311 if(((capture_file *) capture_opts->cf)->user_saved == FALSE){
2312 ws_unlink(((capture_file *) capture_opts->cf)->filename);
2315 #ifdef USE_BROKEN_G_MAIN_LOOP
2316 /*g_main_loop_quit(loop);*/
2319 loop_running = FALSE;
2328 capture_cleanup(DWORD ctrltype _U_)
2330 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2331 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2332 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2333 like SIGTERM at least when the machine's shutting down.
2335 For now, we handle them all as indications that we should clean up
2336 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2339 We must return TRUE so that no other handler - such as one that would
2340 terminate the process - gets called.
2342 XXX - for some reason, typing ^C to TShark, if you run this in
2343 a Cygwin console window in at least some versions of Cygwin,
2344 causes TShark to terminate immediately; this routine gets
2345 called, but the main loop doesn't get a chance to run and
2346 exit cleanly, at least if this is compiled with Microsoft Visual
2347 C++ (i.e., it's a property of the Cygwin console window or Bash;
2348 it happens if TShark is not built with Cygwin - for all I know,
2349 building it with Cygwin may make the problem go away). */
2351 /* tell the capture child to stop */
2352 sync_pipe_stop(&global_capture_opts);
2354 /* don't stop our own loop already here, otherwise status messages and
2355 * cleanup wouldn't be done properly. The child will indicate the stop of
2356 * everything by calling capture_input_closed() later */
2362 capture_cleanup(int signum _U_)
2364 /* tell the capture child to stop */
2365 sync_pipe_stop(&global_capture_opts);
2367 /* don't stop our own loop already here, otherwise status messages and
2368 * cleanup wouldn't be done properly. The child will indicate the stop of
2369 * everything by calling capture_input_closed() later */
2372 #endif /* HAVE_LIBPCAP */
2374 #if GLIB_CHECK_VERSION(2,10,0)
2376 process_packet_first_pass(capture_file *cf,
2377 gint64 offset, const struct wtap_pkthdr *whdr,
2378 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2380 frame_data *fdata = g_slice_new(frame_data);
2384 /* Count this packet. */
2387 /* If we're not running a display filter and we're not printing any
2388 packet information, we don't need to do a dissection. This means
2389 that all packets can be marked as 'passed'. */
2392 frame_data_init(fdata, cf->count, whdr, offset, cum_bytes);
2394 /* If we're going to print packet information, or we're going to
2395 run a read filter, or we're going to process taps, set up to
2396 do a dissection and do so. */
2397 if (do_dissection) {
2398 if (gbl_resolv_flags)
2399 /* Grab any resolved addresses */
2400 host_name_lookup_process(NULL);
2402 /* The protocol tree will be "visible", i.e., printed, only if we're
2403 printing packet details, which is true if we're printing stuff
2404 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2406 epan_dissect_init(&edt, FALSE, FALSE);
2408 /* If we're running a read filter, prime the epan_dissect_t with that
2411 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2413 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2414 &first_ts, &prev_dis_ts, &prev_cap_ts);
2416 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2418 /* Run the read filter if we have one. */
2420 passed = dfilter_apply_edt(cf->rfcode, &edt);
2424 frame_data_set_after_dissect(fdata, &cum_bytes, &prev_dis_ts);
2425 cap_file_add_fdata(cf, fdata);
2428 g_slice_free(frame_data, fdata);
2431 epan_dissect_cleanup(&edt);
2437 process_packet_second_pass(capture_file *cf, frame_data *fdata,
2438 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2439 gboolean filtering_tap_listeners, guint tap_flags)
2441 gboolean create_proto_tree;
2446 /* If we're not running a display filter and we're not printing any
2447 packet information, we don't need to do a dissection. This means
2448 that all packets can be marked as 'passed'. */
2451 /* If we're going to print packet information, or we're going to
2452 run a read filter, or we're going to process taps, set up to
2453 do a dissection and do so. */
2454 if (do_dissection) {
2455 if (gbl_resolv_flags)
2456 /* Grab any resolved addresses */
2457 host_name_lookup_process(NULL);
2459 if (cf->rfcode || verbose || filtering_tap_listeners ||
2460 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2461 create_proto_tree = TRUE;
2463 create_proto_tree = FALSE;
2465 /* The protocol tree will be "visible", i.e., printed, only if we're
2466 printing packet details, which is true if we're printing stuff
2467 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2469 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2471 /* If we're running a read filter, prime the epan_dissect_t with that
2474 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2476 col_custom_prime_edt(&edt, &cf->cinfo);
2478 tap_queue_init(&edt);
2480 /* We only need the columns if either
2482 1) some tap needs the columns
2486 2) we're printing packet info but we're *not* verbose; in verbose
2487 mode, we print the protocol tree, not the protocol summary. */
2488 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2493 epan_dissect_run(&edt, pseudo_header, pd, fdata, cinfo);
2495 tap_push_tapped_queue(&edt);
2497 /* Run the read filter if we have one. */
2499 passed = dfilter_apply_edt(cf->rfcode, &edt);
2503 /* Process this packet. */
2504 if (print_packet_info) {
2505 /* We're printing packet information; print the information for
2508 print_packet(cf, &edt);
2510 print_packet(cf, NULL);
2512 /* The ANSI C standard does not appear to *require* that a line-buffered
2513 stream be flushed to the host environment whenever a newline is
2514 written, it just says that, on such a stream, characters "are
2515 intended to be transmitted to or from the host environment as a
2516 block when a new-line character is encountered".
2518 The Visual C++ 6.0 C implementation doesn't do what is intended;
2519 even if you set a stream to be line-buffered, it still doesn't
2520 flush the buffer at the end of every line.
2522 So, if the "-l" flag was specified, we flush the standard output
2523 at the end of a packet. This will do the right thing if we're
2524 printing packet summary lines, and, as we print the entire protocol
2525 tree for a single packet without waiting for anything to happen,
2526 it should be as good as line-buffered mode if we're printing
2527 protocol trees. (The whole reason for the "-l" flag in either
2528 tcpdump or TShark is to allow the output of a live capture to
2529 be piped to a program or script and to have that script see the
2530 information for the packet as soon as it's printed, rather than
2531 having to wait until a standard I/O buffer fills up. */
2535 if (ferror(stdout)) {
2536 show_print_file_io_error(errno);
2542 if (do_dissection) {
2543 epan_dissect_cleanup(&edt);
2550 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2551 int max_packet_count, gint64 max_byte_count)
2554 int snapshot_length;
2557 gchar *err_info = NULL;
2559 char *save_file_string = NULL;
2560 gboolean filtering_tap_listeners;
2563 linktype = wtap_file_encap(cf->wth);
2564 if (save_file != NULL) {
2565 /* Get a string that describes what we're writing to */
2566 save_file_string = output_file_description(save_file);
2568 /* Set up to write to the capture file. */
2569 snapshot_length = wtap_snapshot_length(cf->wth);
2570 if (snapshot_length == 0) {
2571 /* Snapshot length of input file not known. */
2572 snapshot_length = WTAP_MAX_PACKET_SIZE;
2574 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2575 FALSE /* compressed */, &err);
2578 /* We couldn't set up to write to the capture file. */
2581 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2582 cmdarg_err("Capture files can't be written in that format.");
2585 case WTAP_ERR_UNSUPPORTED_ENCAP:
2586 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2587 cmdarg_err("The capture file being read can't be written in "
2591 case WTAP_ERR_CANT_OPEN:
2592 cmdarg_err("The %s couldn't be created for some "
2593 "unknown reason.", save_file_string);
2596 case WTAP_ERR_SHORT_WRITE:
2597 cmdarg_err("A full header couldn't be written to the %s.",
2602 cmdarg_err("The %s could not be created: %s.", save_file_string,
2603 wtap_strerror(err));
2609 if (print_packet_info) {
2610 if (!write_preamble(cf)) {
2612 show_print_file_io_error(err);
2619 /* Do we have any tap listeners with filters? */
2620 filtering_tap_listeners = have_filtering_tap_listeners();
2622 /* Get the union of the flags for all tap listeners. */
2623 tap_flags = union_of_tap_listener_flags();
2625 if (perform_two_pass_analysis) {
2626 #if GLIB_CHECK_VERSION(2,10,0)
2628 int old_max_packet_count = max_packet_count;
2630 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2631 if (process_packet_first_pass(cf, data_offset, wtap_phdr(cf->wth),
2632 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2633 /* Stop reading if we have the maximum number of packets;
2634 * When the -c option has not been used, max_packet_count
2635 * starts at 0, which practically means, never stop reading.
2636 * (unless we roll over max_packet_count ?)
2638 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2639 err = 0; /* This is not an error */
2645 /* Close the sequential I/O side, to free up memory it requires. */
2646 wtap_sequential_close(cf->wth);
2648 /* Allow the protocol dissectors to free up memory that they
2649 * don't need after the sequential run-through of the packets. */
2650 postseq_cleanup_all_protocols();
2652 max_packet_count = old_max_packet_count;
2654 for (fdata = cf->plist_start; err == 0 && fdata != NULL; fdata = fdata->next) {
2655 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->pseudo_header,
2656 cf->pd, fdata->cap_len, &err, &err_info)) {
2657 if (process_packet_second_pass(cf, fdata,
2658 &cf->pseudo_header, cf->pd,
2659 filtering_tap_listeners, tap_flags)) {
2660 /* Either there's no read filtering or this packet passed the
2661 filter, so, if we're writing to a capture file, write
2664 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2665 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2667 /* Error writing to a capture file */
2668 show_capture_file_io_error(save_file, err, FALSE);
2669 wtap_dump_close(pdh, &err);
2673 /* Stop reading if we have the maximum number of packets;
2674 * When the -c option has not been used, max_packet_count
2675 * starts at 0, which practically means, never stop reading.
2676 * (unless we roll over max_packet_count ?)
2678 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2679 err = 0; /* This is not an error */
2688 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2689 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2690 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2691 filtering_tap_listeners, tap_flags)) {
2692 /* Either there's no read filtering or this packet passed the
2693 filter, so, if we're writing to a capture file, write
2696 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2697 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2699 /* Error writing to a capture file */
2700 show_capture_file_io_error(save_file, err, FALSE);
2701 wtap_dump_close(pdh, &err);
2705 /* Stop reading if we have the maximum number of packets;
2706 * When the -c option has not been used, max_packet_count
2707 * starts at 0, which practically means, never stop reading.
2708 * (unless we roll over max_packet_count ?)
2710 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2711 err = 0; /* This is not an error */
2720 * Print a message noting that the read failed somewhere along the line.
2722 * If we're printing packet data, and the standard output and error are
2723 * going to the same place, flush the standard output, so everything
2724 * buffered up is written, and then print a newline to the standard error
2725 * before printing the error message, to separate it from the packet
2726 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
2727 * the _fstat() documentation at Microsoft doesn't indicate whether
2728 * st_ino is even supported.)
2731 if (print_packet_info) {
2732 struct stat stat_stdout, stat_stderr;
2734 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
2735 if (stat_stdout.st_dev == stat_stderr.st_dev &&
2736 stat_stdout.st_ino == stat_stderr.st_ino) {
2738 fprintf(stderr, "\n");
2745 case WTAP_ERR_UNSUPPORTED_ENCAP:
2746 cmdarg_err("\"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2747 cf->filename, err_info);
2751 case WTAP_ERR_CANT_READ:
2752 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
2756 case WTAP_ERR_SHORT_READ:
2757 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
2761 case WTAP_ERR_BAD_RECORD:
2762 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
2763 cf->filename, err_info);
2768 cmdarg_err("An error occurred while reading \"%s\": %s.",
2769 cf->filename, wtap_strerror(err));
2772 if (save_file != NULL) {
2773 /* Now close the capture file. */
2774 if (!wtap_dump_close(pdh, &err))
2775 show_capture_file_io_error(save_file, err, TRUE);
2778 if (save_file != NULL) {
2779 /* Now close the capture file. */
2780 if (!wtap_dump_close(pdh, &err))
2781 show_capture_file_io_error(save_file, err, TRUE);
2783 if (print_packet_info) {
2784 if (!write_finale()) {
2786 show_print_file_io_error(err);
2793 wtap_close(cf->wth);
2796 g_free(save_file_string);
2802 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2803 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2804 gboolean filtering_tap_listeners, guint tap_flags)
2807 gboolean create_proto_tree;
2812 /* Count this packet. */
2815 /* If we're not running a display filter and we're not printing any
2816 packet information, we don't need to do a dissection. This means
2817 that all packets can be marked as 'passed'. */
2820 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
2822 /* If we're going to print packet information, or we're going to
2823 run a read filter, or we're going to process taps, set up to
2824 do a dissection and do so. */
2825 if (do_dissection) {
2826 if (print_packet_info && gbl_resolv_flags)
2827 /* Grab any resolved addresses */
2828 host_name_lookup_process(NULL);
2830 if (cf->rfcode || verbose || filtering_tap_listeners ||
2831 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2832 create_proto_tree = TRUE;
2834 create_proto_tree = FALSE;
2836 /* The protocol tree will be "visible", i.e., printed, only if we're
2837 printing packet details, which is true if we're printing stuff
2838 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2840 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2842 /* If we're running a read filter, prime the epan_dissect_t with that
2845 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2847 col_custom_prime_edt(&edt, &cf->cinfo);
2849 tap_queue_init(&edt);
2851 /* We only need the columns if either
2853 1) some tap needs the columns
2857 2) we're printing packet info but we're *not* verbose; in verbose
2858 mode, we print the protocol tree, not the protocol summary. */
2859 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2864 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
2865 &first_ts, &prev_dis_ts, &prev_cap_ts);
2867 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
2869 tap_push_tapped_queue(&edt);
2871 /* Run the read filter if we have one. */
2873 passed = dfilter_apply_edt(cf->rfcode, &edt);
2877 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
2879 /* Process this packet. */
2880 if (print_packet_info) {
2881 /* We're printing packet information; print the information for
2884 print_packet(cf, &edt);
2886 print_packet(cf, NULL);
2888 /* The ANSI C standard does not appear to *require* that a line-buffered
2889 stream be flushed to the host environment whenever a newline is
2890 written, it just says that, on such a stream, characters "are
2891 intended to be transmitted to or from the host environment as a
2892 block when a new-line character is encountered".
2894 The Visual C++ 6.0 C implementation doesn't do what is intended;
2895 even if you set a stream to be line-buffered, it still doesn't
2896 flush the buffer at the end of every line.
2898 So, if the "-l" flag was specified, we flush the standard output
2899 at the end of a packet. This will do the right thing if we're
2900 printing packet summary lines, and, as we print the entire protocol
2901 tree for a single packet without waiting for anything to happen,
2902 it should be as good as line-buffered mode if we're printing
2903 protocol trees. (The whole reason for the "-l" flag in either
2904 tcpdump or TShark is to allow the output of a live capture to
2905 be piped to a program or script and to have that script see the
2906 information for the packet as soon as it's printed, rather than
2907 having to wait until a standard I/O buffer fills up. */
2911 if (ferror(stdout)) {
2912 show_print_file_io_error(errno);
2918 if (do_dissection) {
2919 epan_dissect_cleanup(&edt);
2920 frame_data_cleanup(&fdata);
2926 write_preamble(capture_file *cf)
2928 switch (output_action) {
2931 return print_preamble(print_stream, cf ? cf->filename : NULL);
2935 write_pdml_preamble(stdout);
2937 write_psml_preamble(stdout);
2938 return !ferror(stdout);
2941 write_fields_preamble(output_fields, stdout);
2942 return !ferror(stdout);
2945 g_assert_not_reached();
2951 get_line_buf(size_t len)
2953 static char *line_bufp = NULL;
2954 static size_t line_buf_len = 256;
2955 size_t new_line_buf_len;
2957 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
2958 new_line_buf_len *= 2)
2960 if (line_bufp == NULL) {
2961 line_buf_len = new_line_buf_len;
2962 line_bufp = g_malloc(line_buf_len + 1);
2964 if (new_line_buf_len > line_buf_len) {
2965 line_buf_len = new_line_buf_len;
2966 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
2973 print_columns(capture_file *cf)
2980 line_bufp = get_line_buf(256);
2983 for (i = 0; i < cf->cinfo.num_cols; i++) {
2984 switch (cf->cinfo.col_fmt[i]) {
2988 * Don't print this if we're doing a live capture from a network
2989 * interface - if we're doing a live capture, you won't be
2990 * able to look at the capture in the future (it's not being
2991 * saved anywhere), so the frame numbers are unlikely to be
2994 * (XXX - it might be nice to be able to save and print at
2995 * the same time, sort of like an "Update list of packets
2996 * in real time" capture in Wireshark.)
2998 if (global_capture_opts.iface != NULL)
3001 column_len = strlen(cf->cinfo.col_data[i]);
3004 line_bufp = get_line_buf(buf_offset + column_len);
3005 sprintf(line_bufp + buf_offset, "%3s", cf->cinfo.col_data[i]);
3011 case COL_ABS_DATE_TIME: /* XXX - wider */
3012 column_len = strlen(cf->cinfo.col_data[i]);
3013 if (column_len < 10)
3015 line_bufp = get_line_buf(buf_offset + column_len);
3016 sprintf(line_bufp + buf_offset, "%10s", cf->cinfo.col_data[i]);
3022 case COL_DEF_DL_SRC:
3023 case COL_RES_DL_SRC:
3024 case COL_UNRES_DL_SRC:
3025 case COL_DEF_NET_SRC:
3026 case COL_RES_NET_SRC:
3027 case COL_UNRES_NET_SRC:
3028 column_len = strlen(cf->cinfo.col_data[i]);
3029 if (column_len < 12)
3031 line_bufp = get_line_buf(buf_offset + column_len);
3032 sprintf(line_bufp + buf_offset, "%12s", cf->cinfo.col_data[i]);
3038 case COL_DEF_DL_DST:
3039 case COL_RES_DL_DST:
3040 case COL_UNRES_DL_DST:
3041 case COL_DEF_NET_DST:
3042 case COL_RES_NET_DST:
3043 case COL_UNRES_NET_DST:
3044 column_len = strlen(cf->cinfo.col_data[i]);
3045 if (column_len < 12)
3047 line_bufp = get_line_buf(buf_offset + column_len);
3048 sprintf(line_bufp + buf_offset, "%-12s", cf->cinfo.col_data[i]);
3052 column_len = strlen(cf->cinfo.col_data[i]);
3053 line_bufp = get_line_buf(buf_offset + column_len);
3054 strcat(line_bufp + buf_offset, cf->cinfo.col_data[i]);
3057 buf_offset += column_len;
3058 if (i != cf->cinfo.num_cols - 1) {
3060 * This isn't the last column, so we need to print a
3061 * separator between this column and the next.
3063 * If we printed a network source and are printing a
3064 * network destination of the same type next, separate
3065 * them with "->"; if we printed a network destination
3066 * and are printing a network source of the same type
3067 * next, separate them with "<-"; otherwise separate them
3070 * We add enough space to the buffer for " <- " or " -> ",
3071 * even if we're only adding " ".
3073 line_bufp = get_line_buf(buf_offset + 4);
3074 switch (cf->cinfo.col_fmt[i]) {
3079 switch (cf->cinfo.col_fmt[i + 1]) {
3084 strcat(line_bufp + buf_offset, " -> ");
3089 strcat(line_bufp + buf_offset, " ");
3095 case COL_DEF_DL_SRC:
3096 case COL_RES_DL_SRC:
3097 case COL_UNRES_DL_SRC:
3098 switch (cf->cinfo.col_fmt[i + 1]) {
3100 case COL_DEF_DL_DST:
3101 case COL_RES_DL_DST:
3102 case COL_UNRES_DL_DST:
3103 strcat(line_bufp + buf_offset, " -> ");
3108 strcat(line_bufp + buf_offset, " ");
3114 case COL_DEF_NET_SRC:
3115 case COL_RES_NET_SRC:
3116 case COL_UNRES_NET_SRC:
3117 switch (cf->cinfo.col_fmt[i + 1]) {
3119 case COL_DEF_NET_DST:
3120 case COL_RES_NET_DST:
3121 case COL_UNRES_NET_DST:
3122 strcat(line_bufp + buf_offset, " -> ");
3127 strcat(line_bufp + buf_offset, " ");
3136 switch (cf->cinfo.col_fmt[i + 1]) {
3141 strcat(line_bufp + buf_offset, " <- ");
3146 strcat(line_bufp + buf_offset, " ");
3152 case COL_DEF_DL_DST:
3153 case COL_RES_DL_DST:
3154 case COL_UNRES_DL_DST:
3155 switch (cf->cinfo.col_fmt[i + 1]) {
3157 case COL_DEF_DL_SRC:
3158 case COL_RES_DL_SRC:
3159 case COL_UNRES_DL_SRC:
3160 strcat(line_bufp + buf_offset, " <- ");
3165 strcat(line_bufp + buf_offset, " ");
3171 case COL_DEF_NET_DST:
3172 case COL_RES_NET_DST:
3173 case COL_UNRES_NET_DST:
3174 switch (cf->cinfo.col_fmt[i + 1]) {
3176 case COL_DEF_NET_SRC:
3177 case COL_RES_NET_SRC:
3178 case COL_UNRES_NET_SRC:
3179 strcat(line_bufp + buf_offset, " <- ");
3184 strcat(line_bufp + buf_offset, " ");
3191 strcat(line_bufp + buf_offset, " ");
3197 return print_line(print_stream, 0, line_bufp);
3201 print_packet(capture_file *cf, epan_dissect_t *edt)
3203 print_args_t print_args;
3206 /* Print the information in the protocol tree. */
3207 switch (output_action) {
3210 print_args.to_file = TRUE;
3211 print_args.format = print_format;
3212 print_args.print_summary = !verbose;
3213 print_args.print_hex = verbose && print_hex;
3214 print_args.print_formfeed = FALSE;
3215 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
3217 /* init the packet range */
3218 packet_range_init(&print_args.range);
3220 if (!proto_tree_print(&print_args, edt, print_stream))
3223 /* "print_hex_data()" will put out a leading blank line, as well
3224 as a trailing one; print one here, to separate the packets,
3225 only if "print_hex_data()" won't be called. */
3226 if (!print_line(print_stream, 0, ""))
3232 proto_tree_write_pdml(edt, stdout);
3234 return !ferror(stdout);
3236 proto_tree_write_fields(output_fields, edt, stdout);
3238 return !ferror(stdout);
3241 /* Just fill in the columns. */
3242 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3244 /* Now print them. */
3245 switch (output_action) {
3248 if (!print_columns(cf))
3253 proto_tree_write_psml(edt, stdout);
3254 return !ferror(stdout);
3255 case WRITE_FIELDS: /*No non-verbose "fields" format */
3256 g_assert_not_reached();
3261 if (!print_hex_data(print_stream, edt))
3263 if (!print_line(print_stream, 0, ""))
3272 switch (output_action) {
3275 return print_finale(print_stream);
3279 write_pdml_finale(stdout);
3281 write_psml_finale(stdout);
3282 return !ferror(stdout);
3285 write_fields_finale(output_fields, stdout);
3286 return !ferror(stdout);
3289 g_assert_not_reached();
3295 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3299 char err_msg[2048+1];
3301 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3305 /* The open succeeded. Fill in the information for this file. */
3307 /* Cleanup all data structures used for dissection. */
3308 cleanup_dissection();
3309 /* Initialize all data structures used for dissection. */
3313 cf->f_datalen = 0; /* not used, but set it anyway */
3315 /* Set the file name because we need it to set the follow stream filter.
3316 XXX - is that still true? We need it for other reasons, though,
3318 cf->filename = g_strdup(fname);
3320 /* Indicate whether it's a permanent or temporary file. */
3321 cf->is_tempfile = is_tempfile;
3323 /* If it's a temporary capture buffer file, mark it as not saved. */
3324 cf->user_saved = !is_tempfile;
3326 cf->cd_t = wtap_file_type(cf->wth);
3328 cf->drops_known = FALSE;
3330 cf->snap = wtap_snapshot_length(cf->wth);
3331 if (cf->snap == 0) {
3332 /* Snapshot length not known. */
3333 cf->has_snap = FALSE;
3334 cf->snap = WTAP_MAX_PACKET_SIZE;
3336 cf->has_snap = TRUE;
3337 nstime_set_zero(&cf->elapsed_time);
3338 nstime_set_unset(&first_ts);
3339 nstime_set_unset(&prev_dis_ts);
3340 nstime_set_unset(&prev_cap_ts);
3342 cf->state = FILE_READ_IN_PROGRESS;
3347 g_snprintf(err_msg, sizeof err_msg,
3348 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3349 cmdarg_err("%s", err_msg);
3354 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3356 char *save_file_string;
3358 save_file_string = output_file_description(fname);
3363 cmdarg_err("Not all the packets could be written to the %s because there is "
3364 "no space left on the file system.",
3370 cmdarg_err("Not all the packets could be written to the %s because you are "
3371 "too close to, or over your disk quota.",
3376 case WTAP_ERR_CANT_CLOSE:
3377 cmdarg_err("The %s couldn't be closed for some unknown reason.",
3381 case WTAP_ERR_SHORT_WRITE:
3382 cmdarg_err("Not all the packets could be written to the %s.",
3388 cmdarg_err("The %s could not be closed: %s.", save_file_string,
3389 wtap_strerror(err));
3391 cmdarg_err("An error occurred while writing to the %s: %s.",
3392 save_file_string, wtap_strerror(err));
3396 g_free(save_file_string);
3400 show_print_file_io_error(int err)
3405 cmdarg_err("Not all the packets could be printed because there is "
3406 "no space left on the file system.");
3411 cmdarg_err("Not all the packets could be printed because you are "
3412 "too close to, or over your disk quota.");
3417 cmdarg_err("An error occurred while printing packets: %s.",
3424 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
3428 static char errmsg_errno[1024+1];
3431 /* Wiretap error. */
3434 case WTAP_ERR_NOT_REGULAR_FILE:
3435 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
3438 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
3439 /* Seen only when opening a capture file for reading. */
3440 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
3443 case WTAP_ERR_UNSUPPORTED:
3444 /* Seen only when opening a capture file for reading. */
3445 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3446 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
3449 errmsg = errmsg_errno;
3452 case WTAP_ERR_CANT_WRITE_TO_PIPE:
3453 /* Seen only when opening a capture file for writing. */
3454 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3455 "The file \"%%s\" is a pipe, and %s capture files can't be "
3456 "written to a pipe.", wtap_file_type_string(file_type));
3457 errmsg = errmsg_errno;
3460 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3461 /* Seen only when opening a capture file for writing. */
3462 errmsg = "TShark doesn't support writing capture files in that format.";
3465 case WTAP_ERR_UNSUPPORTED_ENCAP:
3467 errmsg = "TShark can't save this capture in that format.";
3469 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3470 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3473 errmsg = errmsg_errno;
3477 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3479 errmsg = "TShark can't save this capture in that format.";
3481 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3484 case WTAP_ERR_BAD_RECORD:
3485 /* Seen only when opening a capture file for reading. */
3486 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3487 "The file \"%%s\" appears to be damaged or corrupt.\n"
3490 errmsg = errmsg_errno;
3493 case WTAP_ERR_CANT_OPEN:
3495 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3497 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3500 case WTAP_ERR_SHORT_READ:
3501 errmsg = "The file \"%s\" appears to have been cut short"
3502 " in the middle of a packet or other data.";
3505 case WTAP_ERR_SHORT_WRITE:
3506 errmsg = "A full header couldn't be written to the file \"%s\".";
3510 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3511 "The file \"%%s\" could not be %s: %s.",
3512 for_writing ? "created" : "opened",
3513 wtap_strerror(err));
3514 errmsg = errmsg_errno;
3518 errmsg = file_open_error_message(err, for_writing);
3523 * Open/create errors are reported with an console message in TShark.
3526 open_failure_message(const char *filename, int err, gboolean for_writing)
3528 fprintf(stderr, "tshark: ");
3529 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3530 fprintf(stderr, "\n");
3535 * General errors are reported with an console message in TShark.
3538 failure_message(const char *msg_format, va_list ap)
3540 fprintf(stderr, "tshark: ");
3541 vfprintf(stderr, msg_format, ap);
3542 fprintf(stderr, "\n");
3546 * Read errors are reported with an console message in TShark.
3549 read_failure_message(const char *filename, int err)
3551 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3552 filename, strerror(err));
3556 * Write errors are reported with an console message in TShark.
3559 write_failure_message(const char *filename, int err)
3561 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3562 filename, strerror(err));
3566 * Print to the standard error. This is a command-line tool, so there's
3567 * no need to pop up a console.
3570 vfprintf_stderr(const char *fmt, va_list ap)
3572 vfprintf(stderr, fmt, ap);
3576 fprintf_stderr(const char *fmt, ...)
3581 vfprintf_stderr(fmt, ap);
3586 * Report an error in command-line arguments.
3589 cmdarg_err(const char *fmt, ...)
3594 failure_message(fmt, ap);
3599 * Report additional information for an error in command-line arguments.
3602 cmdarg_err_cont(const char *fmt, ...)
3607 vfprintf(stderr, fmt, ap);
3608 fprintf(stderr, "\n");