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, gboolean, 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, " -O <protocols> Only show packet details of these protocols, comma separated\n");
301 fprintf(output, " -S display packets even when writing to a file\n");
302 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
303 fprintf(output, " -T pdml|ps|psml|text|fields\n");
304 fprintf(output, " format of text output (def: text)\n");
305 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
306 fprintf(output, " this option can be repeated to print multiple fields\n");
307 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
308 fprintf(output, " header=y|n switch headers on and off\n");
309 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
310 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
311 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
312 fprintf(output, " aggregator\n");
313 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
314 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
315 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
316 fprintf(output, " -l flush standard output after each packet\n");
317 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
318 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
319 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
321 fprintf(output, "\n");
322 fprintf(output, "Miscellaneous:\n");
323 fprintf(output, " -h display this help and exit\n");
324 fprintf(output, " -v display version info and exit\n");
325 fprintf(output, " -o <name>:<value> ... override preference setting\n");
326 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
327 fprintf(output, " -G [report] dump one of several available reports and exit\n");
328 fprintf(output, " default report=\"fields\"\n");
329 fprintf(output, " use \"-G ?\" for more help\n");
333 glossary_option_help(void)
339 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
341 fprintf(output, "\n");
342 fprintf(output, "Usage: tshark -G [report]\n");
343 fprintf(output, "\n");
344 fprintf(output, "Glossary table reports:\n");
345 fprintf(output, " -G [fields] dump glossary in original format and exit\n");
346 fprintf(output, " -G fields2 dump glossary in format 2 and exit\n");
347 fprintf(output, " -G fields3 dump glossary in format 3 and exit\n");
348 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
349 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
350 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
351 fprintf(output, "\n");
352 fprintf(output, "Preference reports:\n");
353 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
354 fprintf(output, " -G currentprefs dump current preferences and exit\n");
355 fprintf(output, "\n");
360 * For a dissector table, print on the stream described by output,
361 * its short name (which is what's used in the "-d" option) and its
365 display_dissector_table_names(const char *table_name, const char *ui_name,
368 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
372 * For a dissector handle, print on the stream described by output,
373 * the filter name (which is what's used in the "-d" option) and the full
374 * name for the protocol that corresponds to this handle.
377 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
380 const gchar* proto_filter_name;
381 const gchar* proto_ui_name;
383 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
385 if (proto_id != -1) {
386 proto_filter_name = proto_get_protocol_filter_name(proto_id);
387 proto_ui_name = proto_get_protocol_name(proto_id);
388 g_assert(proto_filter_name != NULL);
389 g_assert(proto_ui_name != NULL);
391 fprintf((FILE *)output, "\t%s (%s)\n",
398 * The protocol_name_search structure is used by find_protocol_name_func()
399 * to pass parameters and store results
401 struct protocol_name_search{
402 gchar *searched_name; /* Protocol filter name we are looking for */
403 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
404 guint nb_match; /* How many dissectors matched searched_name */
406 typedef struct protocol_name_search *protocol_name_search_t;
409 * This function parses all dissectors associated with a table to find the
410 * one whose protocol has the specified filter name. It is called
411 * as a reference function in a call to dissector_table_foreach_handle.
412 * The name we are looking for, as well as the results, are stored in the
413 * protocol_name_search struct pointed to by user_data.
414 * If called using dissector_table_foreach_handle, we actually parse the
415 * whole list of dissectors.
418 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
422 const gchar *protocol_filter_name;
423 protocol_name_search_t search_info;
427 search_info = (protocol_name_search_t)user_data;
429 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
430 if (proto_id != -1) {
431 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
432 g_assert(protocol_filter_name != NULL);
433 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
435 if (search_info->nb_match == 0) {
436 /* Record this handle only if this is the first match */
437 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
439 search_info->nb_match++;
445 * Print all layer type names supported.
446 * We send the output to the stream described by the handle output.
450 fprint_all_layer_types(FILE *output)
453 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
457 * Print all protocol names supported for a specific layer type.
458 * table_name contains the layer type name in which the search is performed.
459 * We send the output to the stream described by the handle output.
463 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
466 dissector_table_foreach_handle(table_name,
467 display_dissector_names,
472 * The function below parses the command-line parameters for the decode as
473 * feature (a string pointer by cl_param).
474 * It checks the format of the command-line, searches for a matching table
475 * and dissector. If a table/dissector match is not found, we display a
476 * summary of the available tables/dissectors (on stderr) and return FALSE.
477 * If everything is fine, we get the "Decode as" preference activated,
478 * then we return TRUE.
481 add_decode_as(const gchar *cl_param)
485 gchar *decoded_param;
486 gchar *remaining_param;
488 gchar *dissector_str;
489 dissector_handle_t dissector_matching;
490 dissector_table_t table_matching;
491 ftenum_t dissector_table_selector_type;
492 struct protocol_name_search user_protocol_name;
494 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
497 decoded_param = g_strdup(cl_param);
498 g_assert(decoded_param);
501 /* The lines below will parse this string (modifying it) to extract all
502 necessary information. Note that decoded_param is still needed since
503 strings are not copied - we just save pointers. */
505 /* This section extracts a layer type (table_name) from decoded_param */
506 table_name = decoded_param; /* Layer type string starts from beginning */
508 remaining_param = strchr(table_name, '=');
509 if (remaining_param == NULL) {
510 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
511 /* If the argument does not follow the template, carry on anyway to check
512 if the table name is at least correct. If remaining_param is NULL,
513 we'll exit anyway further down */
516 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
519 /* Remove leading and trailing spaces from the table name */
520 while ( table_name[0] == ' ' )
522 while ( table_name[strlen(table_name) - 1] == ' ' )
523 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
525 /* The following part searches a table matching with the layer type specified */
526 table_matching = NULL;
528 /* Look for the requested table */
529 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
530 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
533 table_matching = find_dissector_table(table_name);
534 if (!table_matching) {
535 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
539 if (!table_matching) {
540 /* Display a list of supported layer types to help the user, if the
541 specified layer type was not found */
542 cmdarg_err("Valid layer types are:");
543 fprint_all_layer_types(stderr);
545 if (remaining_param == NULL || !table_matching) {
546 /* Exit if the layer type was not found, or if no '=' separator was found
548 g_free(decoded_param);
552 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
553 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
556 remaining_param++; /* Move to the second '=' */
557 *remaining_param = '\0'; /* Remove the second '=' */
559 remaining_param++; /* Position after the layer type string */
561 /* This section extracts a selector value (selector_str) from decoded_param */
563 selector_str = remaining_param; /* Next part starts with the selector number */
565 remaining_param = strchr(selector_str, ',');
566 if (remaining_param == NULL) {
567 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
568 /* If the argument does not follow the template, carry on anyway to check
569 if the selector value is at least correct. If remaining_param is NULL,
570 we'll exit anyway further down */
573 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
576 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
578 switch (dissector_table_selector_type) {
584 /* The selector for this table is an unsigned number. Parse it as such.
585 There's no need to remove leading and trailing spaces from the
586 selector number string, because sscanf will do that for us. */
587 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
588 cmdarg_err("Invalid selector number \"%s\"", selector_str);
589 g_free(decoded_param);
597 /* The selector for this table is a string. */
601 /* There are currently no dissector tables with any types other
602 than the ones listed above. */
603 g_assert_not_reached();
606 if (remaining_param == NULL) {
607 /* Exit if no ',' separator was found (see above) */
608 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
609 fprint_all_protocols_for_layer_types(stderr, table_name);
610 g_free(decoded_param);
614 remaining_param++; /* Position after the selector number string */
616 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
618 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
620 /* Remove leading and trailing spaces from the dissector name */
621 while ( dissector_str[0] == ' ' )
623 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
624 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
626 dissector_matching = NULL;
628 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
629 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 */
630 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
633 user_protocol_name.nb_match = 0;
634 user_protocol_name.searched_name = dissector_str;
635 user_protocol_name.matched_handle = NULL;
637 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 */
639 if (user_protocol_name.nb_match != 0) {
640 dissector_matching = user_protocol_name.matched_handle;
641 if (user_protocol_name.nb_match > 1) {
642 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
646 /* OK, check whether the problem is that there isn't any such
647 protocol, or that there is but it's not specified as a protocol
648 that's valid for that dissector table.
649 Note, we don't exit here, but dissector_matching will remain NULL,
651 if (proto_get_id_by_filter_name(dissector_str) == -1) {
652 /* No such protocol */
653 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
655 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
656 dissector_str, table_name);
661 if (!dissector_matching) {
662 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
663 fprint_all_protocols_for_layer_types(stderr, table_name);
664 g_free(decoded_param);
668 /* This is the end of the code that parses the command-line options.
669 All information is now stored in the variables:
673 The above variables that are strings are still pointing to areas within
674 decoded_parm. decoded_parm thus still needs to be kept allocated in
675 until we stop needing these variables
676 decoded_param will be deallocated at each exit point of this function */
679 /* We now have a pointer to the handle for the requested dissector
680 (requested protocol) inside the variable dissector_matching */
681 switch (dissector_table_selector_type) {
687 /* The selector for this table is an unsigned number. */
688 dissector_change_uint(table_name, selector, dissector_matching);
694 /* The selector for this table is a string. */
695 dissector_change_string(table_name, selector_str, dissector_matching);
699 /* There are currently no dissector tables with any types other
700 than the ones listed above. */
701 g_assert_not_reached();
703 g_free(decoded_param); /* "Decode As" rule has been successfully added */
708 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
709 const gchar *message, gpointer user_data)
711 /* ignore log message, if log_level isn't interesting based
712 upon the console log preferences.
713 If the preferences haven't been loaded loaded yet, display the
716 The default console_log_level preference value is such that only
717 ERROR, CRITICAL and WARNING level messages are processed;
718 MESSAGE, INFO and DEBUG level messages are ignored.
720 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
721 ERROR and CRITICAL level messages so the current code is a behavioral
722 change. The current behavior is the same as in Wireshark.
724 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
725 prefs.console_log_level != 0) {
729 g_log_default_handler(log_domain, log_level, message, user_data);
734 output_file_description(const char *fname)
736 char *save_file_string;
738 /* Get a string that describes what we're writing to */
739 if (strcmp(fname, "-") == 0) {
740 /* We're writing to the standard output */
741 save_file_string = g_strdup("standard output");
743 /* We're writing to a file with the name in save_file */
744 save_file_string = g_strdup_printf("file \"%s\"", fname);
746 return save_file_string;
750 print_current_user(void) {
751 gchar *cur_user, *cur_group;
752 if (started_with_special_privs()) {
753 cur_user = get_cur_username();
754 cur_group = get_cur_groupname();
755 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
756 cur_user, cur_group);
759 if (running_with_special_privs()) {
760 fprintf(stderr, " This could be dangerous.");
762 fprintf(stderr, "\n");
767 check_capture_privs(void) {
770 /* Warn the user if npf.sys isn't loaded. */
771 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
772 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
773 "capturing or\nlisting interfaces.\n");
779 show_version(GString *comp_info_str, GString *runtime_info_str)
781 printf("TShark " VERSION "%s\n"
788 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
789 runtime_info_str->str);
793 main(int argc, char *argv[])
795 char *init_progfile_dir_error;
797 gboolean arg_error = FALSE;
805 char *gpf_path, *pf_path;
806 char *gdp_path, *dp_path;
807 int gpf_open_errno, gpf_read_errno;
808 int pf_open_errno, pf_read_errno;
809 int gdp_open_errno, gdp_read_errno;
810 int dp_open_errno, dp_read_errno;
814 gboolean list_link_layer_types = FALSE;
815 gboolean start_capture = FALSE;
820 gboolean capture_option_specified = FALSE;
822 gboolean quiet = FALSE;
823 int out_file_type = WTAP_FILE_PCAP;
824 gboolean out_file_name_res = FALSE;
825 gchar *cf_name = NULL, *rfilter = NULL;
826 #ifdef HAVE_PCAP_OPEN_DEAD
827 struct bpf_program fcode;
829 dfilter_t *rfcode = NULL;
832 GLogLevelFlags log_flags;
834 gchar *output_only = NULL;
837 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
838 #define OPTSTRING_B "B:"
840 #define OPTSTRING_B ""
841 #endif /* _WIN32 or HAVE_PCAP_CREATE */
842 #else /* HAVE_LIBPCAP */
843 #define OPTSTRING_B ""
844 #endif /* HAVE_LIBPCAP */
846 #ifdef HAVE_PCAP_CREATE
847 #define OPTSTRING_I "I"
849 #define OPTSTRING_I ""
852 #define OPTSTRING "a:b:" OPTSTRING_B "c:C:d:De:E:f:F:G:hH:i:" OPTSTRING_I "K:lLnN:o:O:pPqr:R:s:St:T:u:vVw:W:xX:y:z:"
854 static const char optstring[] = OPTSTRING;
857 /* Convert our arg list to UTF-8. */
858 wc_argv = CommandLineToArgvW(GetCommandLineW(), &wc_argc);
859 if (wc_argv && wc_argc == argc) {
860 for (i = 0; i < argc; i++) {
861 argv[i] = g_utf16_to_utf8(wc_argv[i], -1, NULL, NULL, NULL);
863 } /* XXX else bail because something is horribly, horribly wrong? */
867 * Get credential information for later use.
869 init_process_policies();
872 * Attempt to get the pathname of the executable file.
874 init_progfile_dir_error = init_progfile_dir(argv[0], main);
875 if (init_progfile_dir_error != NULL) {
876 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
877 init_progfile_dir_error);
881 * In order to have the -X opts assigned before the wslua machine starts
882 * we need to call getopts before epan_init() gets called.
885 optind_initial = optind;
887 while ((opt = getopt(argc, argv, optstring)) != -1) {
889 case 'C': /* Configuration Profile */
890 if (profile_exists (optarg, FALSE)) {
891 set_profile_name (optarg);
893 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
905 optind = optind_initial;
910 /** Send All g_log messages to our own handler **/
914 G_LOG_LEVEL_CRITICAL|
919 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
921 g_log_set_handler(NULL,
923 tshark_log_handler, NULL /* user_data */);
924 g_log_set_handler(LOG_DOMAIN_MAIN,
926 tshark_log_handler, NULL /* user_data */);
929 g_log_set_handler(LOG_DOMAIN_CAPTURE,
931 tshark_log_handler, NULL /* user_data */);
932 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
934 tshark_log_handler, NULL /* user_data */);
937 initialize_funnel_ops();
940 capture_opts_init(&global_capture_opts, &cfile);
943 timestamp_set_type(TS_RELATIVE);
944 timestamp_set_precision(TS_PREC_AUTO);
945 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
947 /* Register all dissectors; we must do this before checking for the
948 "-G" flag, as the "-G" flag dumps information registered by the
949 dissectors, and we must do it before we read the preferences, in
950 case any dissectors register preferences. */
951 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
952 failure_message, open_failure_message, read_failure_message,
953 write_failure_message);
955 /* Register all tap listeners; we do this before we parse the arguments,
956 as the "-z" argument can specify a registered tap. */
958 /* we register the plugin taps before the other taps because
959 stats_tree taps plugins will be registered as tap listeners
960 by stats_tree_stat.c and need to registered before that */
962 register_all_plugin_tap_listeners();
964 register_all_tap_listeners();
966 /* Now register the preferences for any non-dissector modules.
967 We must do that before we read the preferences as well. */
968 prefs_register_modules();
970 /* If invoked with the "-G" flag, we dump out information based on
971 the argument to the "-G" flag; if no argument is specified,
972 for backwards compatibility we dump out a glossary of display
975 XXX - we do this here, for now, to support "-G" with no arguments.
976 If none of our build or other processes uses "-G" with no arguments,
977 we can just process it with the other arguments. */
978 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
979 proto_initialize_all_prefixes();
982 proto_registrar_dump_fields(1);
984 if (strcmp(argv[2], "fields") == 0)
985 proto_registrar_dump_fields(1);
986 else if (strcmp(argv[2], "fields2") == 0)
987 proto_registrar_dump_fields(2);
988 else if (strcmp(argv[2], "fields3") == 0)
989 proto_registrar_dump_fields(3);
990 else if (strcmp(argv[2], "protocols") == 0)
991 proto_registrar_dump_protocols();
992 else if (strcmp(argv[2], "values") == 0)
993 proto_registrar_dump_values();
994 else if (strcmp(argv[2], "decodes") == 0)
995 dissector_dump_decodes();
996 else if (strcmp(argv[2], "defaultprefs") == 0)
998 else if (strcmp(argv[2], "?") == 0)
999 glossary_option_help();
1000 else if (strcmp(argv[2], "-?") == 0)
1001 glossary_option_help();
1002 else if (strcmp(argv[2], "currentprefs") == 0) {
1003 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1004 &pf_open_errno, &pf_read_errno, &pf_path);
1007 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1014 /* Set the C-language locale to the native environment. */
1015 setlocale(LC_ALL, "");
1017 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1018 &pf_open_errno, &pf_read_errno, &pf_path);
1019 if (gpf_path != NULL) {
1020 if (gpf_open_errno != 0) {
1021 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1022 pf_path, strerror(gpf_open_errno));
1024 if (gpf_read_errno != 0) {
1025 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1026 pf_path, strerror(gpf_read_errno));
1029 if (pf_path != NULL) {
1030 if (pf_open_errno != 0) {
1031 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1032 strerror(pf_open_errno));
1034 if (pf_read_errno != 0) {
1035 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1036 pf_path, strerror(pf_read_errno));
1042 /* Set the name resolution code's flags from the preferences. */
1043 gbl_resolv_flags = prefs_p->name_resolve;
1045 /* Read the disabled protocols file. */
1046 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1047 &dp_path, &dp_open_errno, &dp_read_errno);
1048 if (gdp_path != NULL) {
1049 if (gdp_open_errno != 0) {
1050 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1051 gdp_path, strerror(gdp_open_errno));
1053 if (gdp_read_errno != 0) {
1054 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1055 gdp_path, strerror(gdp_read_errno));
1059 if (dp_path != NULL) {
1060 if (dp_open_errno != 0) {
1062 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1063 strerror(dp_open_errno));
1065 if (dp_read_errno != 0) {
1067 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1068 strerror(dp_read_errno));
1073 check_capture_privs();
1075 cap_file_init(&cfile);
1077 /* Print format defaults to this. */
1078 print_format = PR_FMT_TEXT;
1080 output_fields = output_fields_new();
1082 /* Now get our args */
1083 while ((opt = getopt(argc, argv, optstring)) != -1) {
1085 case 'a': /* autostop criteria */
1086 case 'b': /* Ringbuffer option */
1087 case 'c': /* Capture x packets */
1088 case 'f': /* capture filter */
1089 case 'i': /* Use interface x */
1090 case 'p': /* Don't capture in promiscuous mode */
1091 #ifdef HAVE_PCAP_CREATE
1092 case 'I': /* Capture in monitor mode, if available */
1094 case 's': /* Set the snapshot (capture) length */
1095 case 'w': /* Write to capture file x */
1096 case 'y': /* Set the pcap data link type */
1097 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1098 case 'B': /* Buffer size */
1099 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1101 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1106 capture_option_specified = TRUE;
1111 /* Configuration profile settings were already processed just ignore them this time*/
1113 case 'd': /* Decode as rule */
1114 if (!add_decode_as(optarg))
1117 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1118 case 'K': /* Kerberos keytab file */
1119 read_keytab_file(optarg);
1122 case 'D': /* Print a list of capture devices and exit */
1124 if_list = capture_interface_list(&err, &err_str);
1125 if (if_list == NULL) {
1127 case CANT_GET_INTERFACE_LIST:
1128 cmdarg_err("%s", err_str);
1132 case NO_INTERFACES_FOUND:
1133 cmdarg_err("There are no interfaces on which a capture can be done");
1138 capture_opts_print_interfaces(if_list);
1139 free_interface_list(if_list);
1142 capture_option_specified = TRUE;
1148 output_fields_add(output_fields, optarg);
1152 if(!output_fields_set_option(output_fields, optarg)) {
1153 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1154 output_fields_list_options(stderr);
1159 out_file_type = wtap_short_string_to_file_type(optarg);
1160 if (out_file_type < 0) {
1161 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1162 list_capture_types();
1166 case 'W': /* Select extra information to save in our capture file */
1167 /* This is patterned after the -N flag which may not be the best idea. */
1168 if (strchr(optarg, 'n'))
1169 out_file_name_res = TRUE;
1171 case 'H': /* Read address to name mappings from a hosts file */
1172 if (! read_hosts_file(optarg))
1174 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1177 out_file_name_res = TRUE;
1180 case 'h': /* Print help and exit */
1184 case 'l': /* "Line-buffer" standard output */
1185 /* This isn't line-buffering, strictly speaking, it's just
1186 flushing the standard output after the information for
1187 each packet is printed; however, that should be good
1188 enough for all the purposes to which "-l" is put (and
1189 is probably actually better for "-V", as it does fewer
1192 See the comment in "process_packet()" for an explanation of
1193 why we do that, and why we don't just use "setvbuf()" to
1194 make the standard output line-buffered (short version: in
1195 Windows, "line-buffered" is the same as "fully-buffered",
1196 and the output buffer is only flushed when it fills up). */
1197 line_buffered = TRUE;
1199 case 'L': /* Print list of link-layer types and exit */
1201 list_link_layer_types = TRUE;
1203 capture_option_specified = TRUE;
1207 case 'P': /* Perform two pass analysis */
1208 perform_two_pass_analysis = TRUE;
1210 case 'n': /* No name resolution */
1211 gbl_resolv_flags = RESOLV_NONE;
1213 case 'N': /* Select what types of addresses/port #s to resolve */
1214 if (gbl_resolv_flags == RESOLV_ALL)
1215 gbl_resolv_flags = RESOLV_NONE;
1216 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1217 if (badopt != '\0') {
1218 cmdarg_err("-N specifies unknown resolving option '%c';",
1220 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1224 case 'o': /* Override preference from command line */
1225 switch (prefs_set_pref(optarg)) {
1230 case PREFS_SET_SYNTAX_ERR:
1231 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1235 case PREFS_SET_NO_SUCH_PREF:
1236 case PREFS_SET_OBSOLETE:
1237 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1242 case 'O': /* Only output these protocols */
1243 output_only = g_strdup(optarg);
1245 case 'q': /* Quiet */
1248 case 'r': /* Read capture file x */
1249 cf_name = g_strdup(optarg);
1251 case 'R': /* Read file filter */
1254 case 'S': /* show packets in real time */
1255 print_packet_info = TRUE;
1257 case 't': /* Time stamp type */
1258 if (strcmp(optarg, "r") == 0)
1259 timestamp_set_type(TS_RELATIVE);
1260 else if (strcmp(optarg, "a") == 0)
1261 timestamp_set_type(TS_ABSOLUTE);
1262 else if (strcmp(optarg, "ad") == 0)
1263 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1264 else if (strcmp(optarg, "d") == 0)
1265 timestamp_set_type(TS_DELTA);
1266 else if (strcmp(optarg, "dd") == 0)
1267 timestamp_set_type(TS_DELTA_DIS);
1268 else if (strcmp(optarg, "e") == 0)
1269 timestamp_set_type(TS_EPOCH);
1271 cmdarg_err("Invalid time stamp type \"%s\"",
1273 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1274 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1278 case 'T': /* printing Type */
1279 if (strcmp(optarg, "text") == 0) {
1280 output_action = WRITE_TEXT;
1281 print_format = PR_FMT_TEXT;
1282 } else if (strcmp(optarg, "ps") == 0) {
1283 output_action = WRITE_TEXT;
1284 print_format = PR_FMT_PS;
1285 } else if (strcmp(optarg, "pdml") == 0) {
1286 output_action = WRITE_XML;
1288 } else if (strcmp(optarg, "psml") == 0) {
1289 output_action = WRITE_XML;
1291 } else if(strcmp(optarg, "fields") == 0) {
1292 output_action = WRITE_FIELDS;
1293 verbose = TRUE; /* Need full tree info */
1295 cmdarg_err("Invalid -T parameter.");
1296 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1300 case 'u': /* Seconds type */
1301 if (strcmp(optarg, "s") == 0)
1302 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1303 else if (strcmp(optarg, "hms") == 0)
1304 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1306 cmdarg_err("Invalid seconds type \"%s\"", optarg);
1307 cmdarg_err_cont("It must be \"s\" for seconds or \"hms\" for hours, minutes and seconds.");
1311 case 'v': /* Show version and exit */
1313 GString *comp_info_str;
1314 GString *runtime_info_str;
1315 /* Assemble the compile-time version information string */
1316 comp_info_str = g_string_new("Compiled ");
1317 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1319 /* Assemble the run-time version information string */
1320 runtime_info_str = g_string_new("Running ");
1321 get_runtime_version_info(runtime_info_str, NULL);
1322 show_version(comp_info_str, runtime_info_str);
1323 g_string_free(comp_info_str, TRUE);
1324 g_string_free(runtime_info_str, TRUE);
1328 case 'V': /* Verbose */
1330 /* The user asked for a verbose output, so let's ensure they get it,
1331 * even if they're writing to a file.
1333 print_packet_info = TRUE;
1335 case 'x': /* Print packet data in hex (and ASCII) */
1337 /* The user asked for hex output, so let's ensure they get it,
1338 * even if they're writing to a file.
1340 print_packet_info = TRUE;
1345 /* We won't call the init function for the stat this soon
1346 as it would disallow MATE's fields (which are registered
1347 by the preferences set callback) from being used as
1348 part of a tap filter. Instead, we just add the argument
1349 to a list of stat arguments. */
1350 if (!process_stat_cmd_arg(optarg)) {
1351 cmdarg_err("invalid -z argument.");
1352 cmdarg_err_cont(" -z argument must be one of :");
1353 list_stat_cmd_args();
1358 case '?': /* Bad flag - print usage message */
1361 list_capture_types();
1371 /* If we specified output fields, but not the output field type... */
1372 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1373 cmdarg_err("Output fields were specified with \"-e\", "
1374 "but \"-Tfields\" was not specified.");
1376 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1377 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1378 "specified with \"-e\".");
1383 /* If no capture filter or read filter has been specified, and there are
1384 still command-line arguments, treat them as the tokens of a capture
1385 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1386 flag was specified. */
1387 if (optind < argc) {
1388 if (cf_name != NULL) {
1389 if (rfilter != NULL) {
1390 cmdarg_err("Read filters were specified both with \"-R\" "
1391 "and with additional command-line arguments");
1394 rfilter = get_args_as_string(argc, argv, optind);
1397 if (global_capture_opts.has_cfilter) {
1398 cmdarg_err("Capture filters were specified both with \"-f\""
1399 " and with additional command-line arguments");
1402 global_capture_opts.has_cfilter = TRUE;
1403 global_capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1405 capture_option_specified = TRUE;
1411 if (!global_capture_opts.saving_to_file) {
1412 /* We're not saving the capture to a file; if "-q" wasn't specified,
1413 we should print packet information */
1415 print_packet_info = TRUE;
1417 /* We're saving to a file; if we're writing to the standard output.
1418 and we'll also be writing dissected packets to the standard
1419 output, reject the request. At best, we could redirect that
1420 to the standard error; we *can't* write both to the standard
1421 output and have either of them be useful. */
1422 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1423 cmdarg_err("You can't write both raw packet data and dissected packets"
1424 " to the standard output.");
1429 /* We're not saving the capture to a file; if "-q" wasn't specified,
1430 we should print packet information */
1432 print_packet_info = TRUE;
1435 #ifndef HAVE_LIBPCAP
1436 if (capture_option_specified)
1437 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1444 /* We don't support capture filters when reading from a capture file
1445 (the BPF compiler doesn't support all link-layer types that we
1446 support in capture files we read). */
1448 if (cf_name != NULL) {
1449 if (global_capture_opts.has_cfilter) {
1450 cmdarg_err("Only read filters, not capture filters, "
1451 "can be specified when reading a capture file.");
1458 if (output_action != WRITE_TEXT) {
1459 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1464 if (output_only != NULL) {
1468 cmdarg_err("-O requires -V");
1472 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1473 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1474 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1479 if (list_link_layer_types) {
1480 /* We're supposed to list the link-layer types for an interface;
1481 did the user also specify a capture file to be read? */
1483 /* Yes - that's bogus. */
1484 cmdarg_err("You can't specify -L and a capture file to be read.");
1487 /* No - did they specify a ring buffer option? */
1488 if (global_capture_opts.multi_files_on) {
1489 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1495 * "-r" was specified, so we're reading a capture file.
1496 * Capture options don't apply here.
1498 if (global_capture_opts.multi_files_on) {
1499 cmdarg_err("Multiple capture files requested, but "
1500 "a capture isn't being done.");
1503 if (global_capture_opts.has_file_duration) {
1504 cmdarg_err("Switching capture files after a time interval was specified, but "
1505 "a capture isn't being done.");
1508 if (global_capture_opts.has_ring_num_files) {
1509 cmdarg_err("A ring buffer of capture files was specified, but "
1510 "a capture isn't being done.");
1513 if (global_capture_opts.has_autostop_files) {
1514 cmdarg_err("A maximum number of capture files was specified, but "
1515 "a capture isn't being done.");
1519 /* Note: TShark now allows the restriction of a _read_ file by packet count
1520 * and byte count as well as a write file. Other autostop options remain valid
1521 * only for a write file.
1523 if (global_capture_opts.has_autostop_duration) {
1524 cmdarg_err("A maximum capture time was specified, but "
1525 "a capture isn't being done.");
1530 * "-r" wasn't specified, so we're doing a live capture.
1532 if (global_capture_opts.saving_to_file) {
1533 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1535 /* When capturing, we only support writing libpcap format. */
1536 if (out_file_type != WTAP_FILE_PCAP) {
1537 cmdarg_err("Live captures can only be saved in libpcap format.");
1540 if (global_capture_opts.multi_files_on) {
1541 /* Multiple-file mode doesn't work under certain conditions:
1542 a) it doesn't work if you're writing to the standard output;
1543 b) it doesn't work if you're writing to a pipe;
1545 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1546 cmdarg_err("Multiple capture files requested, but "
1547 "the capture is being written to the standard output.");
1550 if (global_capture_opts.output_to_pipe) {
1551 cmdarg_err("Multiple capture files requested, but "
1552 "the capture file is a pipe.");
1555 if (!global_capture_opts.has_autostop_filesize &&
1556 !global_capture_opts.has_file_duration) {
1557 cmdarg_err("Multiple capture files requested, but "
1558 "no maximum capture file size or duration was specified.");
1562 /* Currently, we don't support read filters when capturing
1563 and saving the packets. */
1564 if (rfilter != NULL) {
1565 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1569 /* They didn't specify a "-w" flag, so we won't be saving to a
1570 capture file. Check for options that only make sense if
1571 we're saving to a file. */
1572 if (global_capture_opts.has_autostop_filesize) {
1573 cmdarg_err("Maximum capture file size specified, but "
1574 "capture isn't being saved to a file.");
1577 if (global_capture_opts.multi_files_on) {
1578 cmdarg_err("Multiple capture files requested, but "
1579 "the capture isn't being saved to a file.");
1588 /* Start windows sockets */
1589 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1592 /* Notify all registered modules that have had any of their preferences
1593 changed either from one of the preferences file or from the command
1594 line that their preferences have changed. */
1597 /* At this point MATE will have registered its field array so we can
1598 have a tap filter with one of MATE's late-registered fields as part
1599 of the filter. We can now process all the "-z" arguments. */
1600 start_requested_stats();
1603 /* We currently don't support taps, or printing dissected packets,
1604 if we're writing to a pipe. */
1605 if (global_capture_opts.saving_to_file &&
1606 global_capture_opts.output_to_pipe) {
1607 if (have_tap_listeners()) {
1608 cmdarg_err("Taps aren't supported when saving to a pipe.");
1611 if (print_packet_info) {
1612 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1618 /* disabled protocols as per configuration file */
1619 if (gdp_path == NULL && dp_path == NULL) {
1620 set_disabled_protos_list();
1623 /* Build the column format array */
1624 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1627 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1628 capture_opts_trim_ring_num_files(&global_capture_opts);
1631 if (rfilter != NULL) {
1632 if (!dfilter_compile(rfilter, &rfcode)) {
1633 cmdarg_err("%s", dfilter_error_msg);
1635 #ifdef HAVE_PCAP_OPEN_DEAD
1639 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1641 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1643 " Note: That display filter code looks like a valid capture filter;");
1645 " maybe you mixed them up?");
1654 cfile.rfcode = rfcode;
1656 if (print_packet_info) {
1657 /* If we're printing as text or PostScript, we have
1658 to create a print stream. */
1659 if (output_action == WRITE_TEXT) {
1660 switch (print_format) {
1663 print_stream = print_stream_text_stdio_new(stdout);
1667 print_stream = print_stream_ps_stdio_new(stdout);
1671 g_assert_not_reached();
1676 /* We have to dissect each packet if:
1678 we're printing information about each packet;
1680 we're using a read filter on the packets;
1682 we're using any taps. */
1683 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1687 * We're reading a capture file.
1691 * Immediately relinquish any special privileges we have; we must not
1692 * be allowed to read any capture files the user running TShark
1695 relinquish_special_privs_perm();
1696 print_current_user();
1698 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1703 /* Set timestamp precision; there should arguably be a command-line
1704 option to let the user set this. */
1705 switch(wtap_file_tsprecision(cfile.wth)) {
1706 case(WTAP_FILE_TSPREC_SEC):
1707 timestamp_set_precision(TS_PREC_AUTO_SEC);
1709 case(WTAP_FILE_TSPREC_DSEC):
1710 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1712 case(WTAP_FILE_TSPREC_CSEC):
1713 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1715 case(WTAP_FILE_TSPREC_MSEC):
1716 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1718 case(WTAP_FILE_TSPREC_USEC):
1719 timestamp_set_precision(TS_PREC_AUTO_USEC);
1721 case(WTAP_FILE_TSPREC_NSEC):
1722 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1725 g_assert_not_reached();
1728 /* Process the packets in the file */
1730 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
1731 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1732 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1734 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
1737 /* We still dump out the results of taps, etc., as we might have
1738 read some packets; however, we exit with an error status. */
1742 /* No capture file specified, so we're supposed to do a live capture
1743 (or get a list of link-layer types for a live capture device);
1744 do we have support for live captures? */
1751 cmdarg_err("WinPcap couldn't be found.");
1752 detailed_err = cant_load_winpcap_err("TShark");
1753 cmdarg_err_cont("%s", detailed_err);
1754 g_free(detailed_err);
1759 /* trim the interface name and exit if that failed */
1760 if (!capture_opts_trim_iface(&global_capture_opts,
1761 (prefs_p->capture_device) ? get_if_name(prefs_p->capture_device) : NULL)) {
1765 /* if requested, list the link layer types and exit */
1766 if (list_link_layer_types) {
1767 /* Get the list of link-layer types for the capture device. */
1768 if_capabilities_t *caps;
1770 caps = capture_get_if_capabilities(global_capture_opts.iface,
1771 global_capture_opts.monitor_mode,
1774 cmdarg_err("%s", err_str);
1778 if (caps->data_link_types == NULL) {
1779 cmdarg_err("The capture device \"%s\" has no data link types.", global_capture_opts.iface);
1782 capture_opts_print_if_capabilities(caps,
1783 global_capture_opts.monitor_mode);
1784 free_if_capabilities(caps);
1788 if (print_packet_info) {
1789 if (!write_preamble(NULL)) {
1790 show_print_file_io_error(errno);
1793 } else if (!quiet) {
1795 * We're not printing information for each packet, and the user
1796 * didn't ask us not to print a count of packets as they arrive,
1797 * so print that count so the user knows that packets are arriving.
1799 * XXX - what if the user wants to do a live capture, doesn't want
1800 * to save it to a file, doesn't want information printed for each
1801 * packet, does want some "-z" statistic, and wants packet counts
1802 * so they know whether they're seeing any packets?
1804 print_packet_counts = TRUE;
1807 /* For now, assume libpcap gives microsecond precision. */
1808 timestamp_set_precision(TS_PREC_AUTO_USEC);
1811 * XXX - this returns FALSE if an error occurred, but it also
1812 * returns FALSE if the capture stops because a time limit
1813 * was reached (and possibly other limits), so we can't assume
1814 * it means an error.
1816 * The capture code is a bit twisty, so it doesn't appear to
1817 * be an easy fix. We just ignore the return value for now.
1818 * Instead, pass on the exit status from the capture child.
1821 exit_status = global_capture_opts.fork_child_status;
1823 if (print_packet_info) {
1824 if (!write_finale()) {
1826 show_print_file_io_error(err);
1830 /* No - complain. */
1831 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1838 if (cfile.frames != NULL) {
1839 free_frame_data_sequence(cfile.frames);
1840 cfile.frames = NULL;
1843 draw_tap_listeners(TRUE);
1844 funnel_dump_all_text_windows();
1847 output_fields_free(output_fields);
1848 output_fields = NULL;
1853 /*#define USE_BROKEN_G_MAIN_LOOP*/
1855 #ifdef USE_BROKEN_G_MAIN_LOOP
1858 gboolean loop_running = FALSE;
1860 guint32 packet_count = 0;
1863 /* XXX - move to the right position / file */
1864 /* read from a pipe (callback) */
1865 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1867 typedef struct pipe_input_tag {
1871 pipe_input_cb_t input_cb;
1872 guint pipe_input_id;
1874 GStaticMutex callback_running;
1878 static pipe_input_t pipe_input;
1881 /* The timer has expired, see if there's stuff to read from the pipe,
1882 if so, do the callback */
1884 pipe_timer_cb(gpointer data)
1888 gboolean result, result1;
1890 pipe_input_t *pipe_input_p = data;
1891 gint iterations = 0;
1894 g_static_mutex_lock (&pipe_input_p->callback_running);
1896 /* try to read data from the pipe only 5 times, to avoid blocking */
1897 while(iterations < 5) {
1898 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1900 /* Oddly enough although Named pipes don't work on win9x,
1901 PeekNamedPipe does !!! */
1902 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
1903 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1905 /* Get the child process exit status */
1906 result1 = GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
1909 /* If the Peek returned an error, or there are bytes to be read
1910 or the childwatcher thread has terminated then call the normal
1912 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1914 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1916 /* And call the real handler */
1917 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
1918 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1919 /* pipe closed, return false so that the timer is stopped */
1920 g_static_mutex_unlock (&pipe_input_p->callback_running);
1925 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1926 /* No data, stop now */
1933 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1935 g_static_mutex_unlock (&pipe_input_p->callback_running);
1937 /* we didn't stopped the timer, so let it run */
1944 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1947 pipe_input.source = source;
1948 pipe_input.child_process = child_process;
1949 pipe_input.user_data = user_data;
1950 pipe_input.input_cb = input_cb;
1953 g_static_mutex_init(&pipe_input.callback_running);
1954 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1955 do this but that doesn't cover all win32 platforms. GTK can do
1956 this but doesn't seem to work over processes. Attempt to do
1957 something similar here, start a timer and check for data on every
1959 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1960 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1970 #ifdef USE_TSHARK_SELECT
1974 struct sigaction action, oldaction;
1978 * XXX - dropping privileges is still required, until code cleanup is done
1980 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1981 * when it's done, we don't need special privileges to run tshark at all,
1982 * therefore we don't need to drop these privileges
1983 * The only thing we might want to keep is a warning if tshark is run as root,
1984 * as it's no longer necessary and potentially dangerous.
1986 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1987 * We've opened the capture device, so we shouldn't need any special
1988 * privileges any more; relinquish those privileges.
1990 * XXX - if we have saved set-user-ID support, we should give up those
1991 * privileges immediately, and then reclaim them long enough to get
1992 * a list of network interfaces and to open one, and then give them
1993 * up again, so that stuff we do while processing the argument list,
1994 * reading the user's preferences, loading and starting plugins
1995 * (especially *user* plugins), etc. is done with the user's privileges,
1996 * not special privileges.
1998 relinquish_special_privs_perm();
1999 print_current_user();
2001 /* Cleanup all data structures used for dissection. */
2002 cleanup_dissection();
2003 /* Initialize all data structures used for dissection. */
2007 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2008 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2010 /* Catch SIGINT and SIGTERM and, if we get either of them,
2011 clean up and exit. If SIGHUP isn't being ignored, catch
2012 it too and, if we get it, clean up and exit.
2014 We restart any read that was in progress, so that it doesn't
2015 disrupt reading from the sync pipe. The signal handler tells
2016 the capture child to finish; it will report that it finished,
2017 or will exit abnormally, so we'll stop reading from the sync
2018 pipe, pick up the exit status, and quit. */
2019 action.sa_handler = capture_cleanup;
2020 action.sa_flags = SA_RESTART;
2021 sigemptyset(&action.sa_mask);
2022 sigaction(SIGTERM, &action, NULL);
2023 sigaction(SIGINT, &action, NULL);
2024 sigaction(SIGHUP, NULL, &oldaction);
2025 if (oldaction.sa_handler == SIG_DFL)
2026 sigaction(SIGHUP, &action, NULL);
2029 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2030 quiet mode, report the number of packets we've captured.
2032 Again, restart any read that was in progress, so that it doesn't
2033 disrupt reading from the sync pipe. */
2034 action.sa_handler = report_counts_siginfo;
2035 action.sa_flags = SA_RESTART;
2036 sigemptyset(&action.sa_mask);
2037 sigaction(SIGINFO, &action, NULL);
2038 #endif /* SIGINFO */
2041 global_capture_opts.state = CAPTURE_PREPARING;
2043 /* Let the user know what interface was chosen. */
2044 global_capture_opts.iface_descr = get_interface_descriptive_name(global_capture_opts.iface);
2045 fprintf(stderr, "Capturing on %s\n", global_capture_opts.iface_descr);
2047 ret = sync_pipe_start(&global_capture_opts);
2052 /* the actual capture loop
2054 * XXX - glib doesn't seem to provide any event based loop handling.
2056 * XXX - for whatever reason,
2057 * calling g_main_loop_new() ends up in 100% cpu load.
2059 * But that doesn't matter: in UNIX we can use select() to find an input
2060 * source with something to do.
2062 * But that doesn't matter because we're in a CLI (that doesn't need to
2063 * update a GUI or something at the same time) so it's OK if we block
2064 * trying to read from the pipe.
2066 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2067 * wrong (but I leave it there in case I am...).
2070 #ifdef USE_TSHARK_SELECT
2072 FD_SET(pipe_input.source, &readfds);
2075 loop_running = TRUE;
2077 while (loop_running)
2079 #ifdef USE_TSHARK_SELECT
2080 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2086 } else if (ret == 1) {
2088 /* Call the real handler */
2089 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2090 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2093 #ifdef USE_TSHARK_SELECT
2102 /* XXX - move the call to main_window_update() out of capture_sync.c */
2103 /* dummy for capture_sync.c to make linker happy */
2104 void main_window_update(void)
2108 /* capture child detected an error */
2110 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
2112 cmdarg_err("%s", error_msg);
2113 cmdarg_err_cont("%s", secondary_error_msg);
2117 /* capture child detected an capture filter related error */
2119 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
2121 dfilter_t *rfcode = NULL;
2124 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
2126 "Invalid capture filter: \"%s\"!\n"
2128 "That string looks like a valid display filter; however, it isn't a valid\n"
2129 "capture filter (%s).\n"
2131 "Note that display filters and capture filters don't have the same syntax,\n"
2132 "so you can't use most display filter expressions as capture filters.\n"
2134 "See the User's Guide for a description of the capture filter syntax.",
2135 capture_opts->cfilter, error_message);
2136 dfilter_free(rfcode);
2139 "Invalid capture filter: \"%s\"!\n"
2141 "That string isn't a valid capture filter (%s).\n"
2142 "See the User's Guide for a description of the capture filter syntax.",
2143 capture_opts->cfilter, error_message);
2148 /* capture child tells us we have a new (or the first) capture file */
2150 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
2152 gboolean is_tempfile;
2155 if(capture_opts->state == CAPTURE_PREPARING) {
2156 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2158 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2160 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
2162 /* free the old filename */
2163 if (capture_opts->save_file != NULL) {
2165 /* we start a new capture file, close the old one (if we had one before) */
2166 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
2167 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
2168 wtap_close(((capture_file *) capture_opts->cf)->wth);
2170 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
2173 g_free(capture_opts->save_file);
2174 is_tempfile = FALSE;
2176 /* we didn't had a save_file before, must be a tempfile */
2180 /* save the new filename */
2181 capture_opts->save_file = g_strdup(new_file);
2183 /* if we are in real-time mode, open the new file now */
2185 /* Attempt to open the capture file and set up to read from it. */
2186 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
2190 /* Don't unlink (delete) the save file - leave it around,
2191 for debugging purposes. */
2192 g_free(capture_opts->save_file);
2193 capture_opts->save_file = NULL;
2198 capture_opts->state = CAPTURE_RUNNING;
2204 /* capture child tells us we have new packets to read */
2206 capture_input_new_packets(capture_options *capture_opts, int to_read)
2212 capture_file *cf = capture_opts->cf;
2213 gboolean filtering_tap_listeners;
2218 * Prevent a SIGINFO handler from writing to the standard error while
2219 * we're doing so or writing to the standard output; instead, have it
2220 * just set a flag telling us to print that information when we're done.
2223 #endif /* SIGINFO */
2225 /* Do we have any tap listeners with filters? */
2226 filtering_tap_listeners = have_filtering_tap_listeners();
2228 /* Get the union of the flags for all tap listeners. */
2229 tap_flags = union_of_tap_listener_flags();
2232 while (to_read-- && cf->wth) {
2233 wtap_cleareof(cf->wth);
2234 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2236 /* read from file failed, tell the capture child to stop */
2237 sync_pipe_stop(capture_opts);
2238 wtap_close(cf->wth);
2241 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2242 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2243 filtering_tap_listeners, tap_flags);
2246 /* packet successfully read and gone through the "Read Filter" */
2252 * Dumpcap's doing all the work; we're not doing any dissection.
2253 * Count all the packets it wrote.
2255 packet_count += to_read;
2258 if (print_packet_counts) {
2259 /* We're printing packet counts. */
2260 if (packet_count != 0) {
2261 fprintf(stderr, "\r%u ", packet_count);
2262 /* stderr could be line buffered */
2269 * Allow SIGINFO handlers to write.
2274 * If a SIGINFO handler asked us to write out capture counts, do so.
2278 #endif /* SIGINFO */
2284 if (!print_packet_counts) {
2285 /* Report the count only if we aren't printing a packet count
2286 as packets arrive. */
2287 fprintf(stderr, "%u packet%s captured\n", packet_count,
2288 plurality(packet_count, "", "s"));
2291 infoprint = FALSE; /* we just reported it */
2292 #endif /* SIGINFO */
2297 report_counts_siginfo(int signum _U_)
2299 int sav_errno = errno;
2300 /* If we've been told to delay printing, just set a flag asking
2301 that we print counts (if we're supposed to), otherwise print
2302 the count of packets captured (if we're supposed to). */
2309 #endif /* SIGINFO */
2312 /* capture child detected any packet drops? */
2314 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2316 if (print_packet_counts) {
2317 /* We're printing packet counts to stderr.
2318 Send a newline so that we move to the line after the packet count. */
2319 fprintf(stderr, "\n");
2323 /* We're printing packet counts to stderr.
2324 Send a newline so that we move to the line after the packet count. */
2325 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2331 * Capture child closed its side of the pipe, report any error and
2332 * do the required cleanup.
2335 capture_input_closed(capture_options *capture_opts, gchar *msg)
2338 fprintf(stderr, "tshark: %s\n", msg);
2342 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2343 wtap_close(((capture_file *) capture_opts->cf)->wth);
2344 if(((capture_file *) capture_opts->cf)->user_saved == FALSE){
2345 ws_unlink(((capture_file *) capture_opts->cf)->filename);
2348 #ifdef USE_BROKEN_G_MAIN_LOOP
2349 /*g_main_loop_quit(loop);*/
2352 loop_running = FALSE;
2361 capture_cleanup(DWORD ctrltype _U_)
2363 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2364 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2365 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2366 like SIGTERM at least when the machine's shutting down.
2368 For now, we handle them all as indications that we should clean up
2369 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2372 We must return TRUE so that no other handler - such as one that would
2373 terminate the process - gets called.
2375 XXX - for some reason, typing ^C to TShark, if you run this in
2376 a Cygwin console window in at least some versions of Cygwin,
2377 causes TShark to terminate immediately; this routine gets
2378 called, but the main loop doesn't get a chance to run and
2379 exit cleanly, at least if this is compiled with Microsoft Visual
2380 C++ (i.e., it's a property of the Cygwin console window or Bash;
2381 it happens if TShark is not built with Cygwin - for all I know,
2382 building it with Cygwin may make the problem go away). */
2384 /* tell the capture child to stop */
2385 sync_pipe_stop(&global_capture_opts);
2387 /* don't stop our own loop already here, otherwise status messages and
2388 * cleanup wouldn't be done properly. The child will indicate the stop of
2389 * everything by calling capture_input_closed() later */
2395 capture_cleanup(int signum _U_)
2397 /* tell the capture child to stop */
2398 sync_pipe_stop(&global_capture_opts);
2400 /* don't stop our own loop already here, otherwise status messages and
2401 * cleanup wouldn't be done properly. The child will indicate the stop of
2402 * everything by calling capture_input_closed() later */
2405 #endif /* HAVE_LIBPCAP */
2408 process_packet_first_pass(capture_file *cf,
2409 gint64 offset, const struct wtap_pkthdr *whdr,
2410 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2417 /* The frame number of this packet is one more than the count of
2418 frames in this packet. */
2419 framenum = cf->count + 1;
2421 /* If we're not running a display filter and we're not printing any
2422 packet information, we don't need to do a dissection. This means
2423 that all packets can be marked as 'passed'. */
2426 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2428 /* If we're going to print packet information, or we're going to
2429 run a read filter, or we're going to process taps, set up to
2430 do a dissection and do so. */
2431 if (do_dissection) {
2432 if (gbl_resolv_flags)
2433 /* Grab any resolved addresses */
2434 host_name_lookup_process(NULL);
2436 /* The protocol tree will be "visible", i.e., printed, only if we're
2437 printing packet details, which is true if we're printing stuff
2438 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2440 epan_dissect_init(&edt, FALSE, FALSE);
2442 /* If we're running a read filter, prime the epan_dissect_t with that
2445 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2447 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2448 &first_ts, &prev_dis_ts, &prev_cap_ts);
2450 epan_dissect_run(&edt, pseudo_header, pd, &fdlocal, NULL);
2452 /* Run the read filter if we have one. */
2454 passed = dfilter_apply_edt(cf->rfcode, &edt);
2458 frame_data_set_after_dissect(&fdlocal, &cum_bytes, &prev_dis_ts);
2459 frame_data_sequence_add(cf->frames, &fdlocal);
2464 epan_dissect_cleanup(&edt);
2470 process_packet_second_pass(capture_file *cf, frame_data *fdata,
2471 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2472 gboolean filtering_tap_listeners, guint tap_flags)
2474 gboolean create_proto_tree;
2479 /* If we're not running a display filter and we're not printing any
2480 packet information, we don't need to do a dissection. This means
2481 that all packets can be marked as 'passed'. */
2484 /* If we're going to print packet information, or we're going to
2485 run a read filter, or we're going to process taps, set up to
2486 do a dissection and do so. */
2487 if (do_dissection) {
2488 if (gbl_resolv_flags)
2489 /* Grab any resolved addresses */
2490 host_name_lookup_process(NULL);
2492 if (cf->rfcode || verbose || filtering_tap_listeners ||
2493 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2494 create_proto_tree = TRUE;
2496 create_proto_tree = FALSE;
2498 /* The protocol tree will be "visible", i.e., printed, only if we're
2499 printing packet details, which is true if we're printing stuff
2500 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2502 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2504 /* If we're running a read filter, prime the epan_dissect_t with that
2507 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2509 col_custom_prime_edt(&edt, &cf->cinfo);
2511 tap_queue_init(&edt);
2513 /* We only need the columns if either
2515 1) some tap needs the columns
2519 2) we're printing packet info but we're *not* verbose; in verbose
2520 mode, we print the protocol tree, not the protocol summary. */
2521 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2526 epan_dissect_run(&edt, pseudo_header, pd, fdata, cinfo);
2528 tap_push_tapped_queue(&edt);
2530 /* Run the read filter if we have one. */
2532 passed = dfilter_apply_edt(cf->rfcode, &edt);
2536 /* Process this packet. */
2537 if (print_packet_info) {
2538 /* We're printing packet information; print the information for
2541 print_packet(cf, &edt);
2543 print_packet(cf, NULL);
2545 /* The ANSI C standard does not appear to *require* that a line-buffered
2546 stream be flushed to the host environment whenever a newline is
2547 written, it just says that, on such a stream, characters "are
2548 intended to be transmitted to or from the host environment as a
2549 block when a new-line character is encountered".
2551 The Visual C++ 6.0 C implementation doesn't do what is intended;
2552 even if you set a stream to be line-buffered, it still doesn't
2553 flush the buffer at the end of every line.
2555 So, if the "-l" flag was specified, we flush the standard output
2556 at the end of a packet. This will do the right thing if we're
2557 printing packet summary lines, and, as we print the entire protocol
2558 tree for a single packet without waiting for anything to happen,
2559 it should be as good as line-buffered mode if we're printing
2560 protocol trees. (The whole reason for the "-l" flag in either
2561 tcpdump or TShark is to allow the output of a live capture to
2562 be piped to a program or script and to have that script see the
2563 information for the packet as soon as it's printed, rather than
2564 having to wait until a standard I/O buffer fills up. */
2568 if (ferror(stdout)) {
2569 show_print_file_io_error(errno);
2575 if (do_dissection) {
2576 epan_dissect_cleanup(&edt);
2582 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2583 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
2586 int snapshot_length;
2589 gchar *err_info = NULL;
2591 char *save_file_string = NULL;
2592 gboolean filtering_tap_listeners;
2595 linktype = wtap_file_encap(cf->wth);
2596 if (save_file != NULL) {
2597 /* Get a string that describes what we're writing to */
2598 save_file_string = output_file_description(save_file);
2600 /* Set up to write to the capture file. */
2601 snapshot_length = wtap_snapshot_length(cf->wth);
2602 if (snapshot_length == 0) {
2603 /* Snapshot length of input file not known. */
2604 snapshot_length = WTAP_MAX_PACKET_SIZE;
2606 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2607 FALSE /* compressed */, &err);
2610 /* We couldn't set up to write to the capture file. */
2613 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2614 cmdarg_err("Capture files can't be written in that format.");
2617 case WTAP_ERR_UNSUPPORTED_ENCAP:
2618 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2619 cmdarg_err("The capture file being read can't be written in "
2623 case WTAP_ERR_CANT_OPEN:
2624 cmdarg_err("The %s couldn't be created for some "
2625 "unknown reason.", save_file_string);
2628 case WTAP_ERR_SHORT_WRITE:
2629 cmdarg_err("A full header couldn't be written to the %s.",
2634 cmdarg_err("The %s could not be created: %s.", save_file_string,
2635 wtap_strerror(err));
2641 if (print_packet_info) {
2642 if (!write_preamble(cf)) {
2644 show_print_file_io_error(err);
2651 if (pdh && out_file_name_res) {
2652 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
2653 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
2654 wtap_file_type_short_string(out_file_type));
2658 /* Do we have any tap listeners with filters? */
2659 filtering_tap_listeners = have_filtering_tap_listeners();
2661 /* Get the union of the flags for all tap listeners. */
2662 tap_flags = union_of_tap_listener_flags();
2664 if (perform_two_pass_analysis) {
2667 int old_max_packet_count = max_packet_count;
2669 /* Allocate a frame_data_sequence for all the frames. */
2670 cf->frames = new_frame_data_sequence();
2672 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2673 if (process_packet_first_pass(cf, data_offset, wtap_phdr(cf->wth),
2674 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2675 /* Stop reading if we have the maximum number of packets;
2676 * When the -c option has not been used, max_packet_count
2677 * starts at 0, which practically means, never stop reading.
2678 * (unless we roll over max_packet_count ?)
2680 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2681 err = 0; /* This is not an error */
2687 /* Close the sequential I/O side, to free up memory it requires. */
2688 wtap_sequential_close(cf->wth);
2690 /* Allow the protocol dissectors to free up memory that they
2691 * don't need after the sequential run-through of the packets. */
2692 postseq_cleanup_all_protocols();
2694 max_packet_count = old_max_packet_count;
2696 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
2697 fdata = frame_data_sequence_find(cf->frames, framenum);
2698 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->pseudo_header,
2699 cf->pd, fdata->cap_len, &err, &err_info)) {
2700 if (process_packet_second_pass(cf, fdata,
2701 &cf->pseudo_header, cf->pd,
2702 filtering_tap_listeners, tap_flags)) {
2703 /* Either there's no read filtering or this packet passed the
2704 filter, so, if we're writing to a capture file, write
2707 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2708 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2710 /* Error writing to a capture file */
2711 show_capture_file_io_error(save_file, err, FALSE);
2712 wtap_dump_close(pdh, &err);
2716 /* Stop reading if we have the maximum number of packets;
2717 * When the -c option has not been used, max_packet_count
2718 * starts at 0, which practically means, never stop reading.
2719 * (unless we roll over max_packet_count ?)
2721 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2722 err = 0; /* This is not an error */
2730 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2731 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2732 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2733 filtering_tap_listeners, tap_flags)) {
2734 /* Either there's no read filtering or this packet passed the
2735 filter, so, if we're writing to a capture file, write
2738 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2739 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2741 /* Error writing to a capture file */
2742 show_capture_file_io_error(save_file, err, FALSE);
2743 wtap_dump_close(pdh, &err);
2747 /* Stop reading if we have the maximum number of packets;
2748 * When the -c option has not been used, max_packet_count
2749 * starts at 0, which practically means, never stop reading.
2750 * (unless we roll over max_packet_count ?)
2752 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2753 err = 0; /* This is not an error */
2762 * Print a message noting that the read failed somewhere along the line.
2764 * If we're printing packet data, and the standard output and error are
2765 * going to the same place, flush the standard output, so everything
2766 * buffered up is written, and then print a newline to the standard error
2767 * before printing the error message, to separate it from the packet
2768 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
2769 * the _fstat() documentation at Microsoft doesn't indicate whether
2770 * st_ino is even supported.)
2773 if (print_packet_info) {
2774 struct stat stat_stdout, stat_stderr;
2776 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
2777 if (stat_stdout.st_dev == stat_stderr.st_dev &&
2778 stat_stdout.st_ino == stat_stderr.st_ino) {
2780 fprintf(stderr, "\n");
2787 case WTAP_ERR_UNSUPPORTED_ENCAP:
2788 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2789 cf->filename, err_info);
2793 case WTAP_ERR_CANT_READ:
2794 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
2798 case WTAP_ERR_SHORT_READ:
2799 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
2803 case WTAP_ERR_BAD_RECORD:
2804 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
2805 cf->filename, err_info);
2809 case WTAP_ERR_DECOMPRESS:
2810 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
2811 "(%s)", cf->filename, err_info);
2815 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
2816 cf->filename, wtap_strerror(err));
2819 if (save_file != NULL) {
2820 /* Now close the capture file. */
2821 if (!wtap_dump_close(pdh, &err))
2822 show_capture_file_io_error(save_file, err, TRUE);
2825 if (save_file != NULL) {
2826 /* Now close the capture file. */
2827 if (!wtap_dump_close(pdh, &err))
2828 show_capture_file_io_error(save_file, err, TRUE);
2830 if (print_packet_info) {
2831 if (!write_finale()) {
2833 show_print_file_io_error(err);
2840 wtap_close(cf->wth);
2843 g_free(save_file_string);
2849 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2850 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2851 gboolean filtering_tap_listeners, guint tap_flags)
2854 gboolean create_proto_tree;
2859 /* Count this packet. */
2862 /* If we're not running a display filter and we're not printing any
2863 packet information, we don't need to do a dissection. This means
2864 that all packets can be marked as 'passed'. */
2867 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
2869 /* If we're going to print packet information, or we're going to
2870 run a read filter, or we're going to process taps, set up to
2871 do a dissection and do so. */
2872 if (do_dissection) {
2873 if (print_packet_info && gbl_resolv_flags)
2874 /* Grab any resolved addresses */
2875 host_name_lookup_process(NULL);
2877 if (cf->rfcode || verbose || filtering_tap_listeners ||
2878 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2879 create_proto_tree = TRUE;
2881 create_proto_tree = FALSE;
2883 /* The protocol tree will be "visible", i.e., printed, only if we're
2884 printing packet details, which is true if we're printing stuff
2885 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2887 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2889 /* If we're running a read filter, prime the epan_dissect_t with that
2892 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2894 col_custom_prime_edt(&edt, &cf->cinfo);
2896 tap_queue_init(&edt);
2898 /* We only need the columns if either
2900 1) some tap needs the columns
2904 2) we're printing packet info but we're *not* verbose; in verbose
2905 mode, we print the protocol tree, not the protocol summary. */
2906 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2911 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
2912 &first_ts, &prev_dis_ts, &prev_cap_ts);
2914 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
2916 tap_push_tapped_queue(&edt);
2918 /* Run the read filter if we have one. */
2920 passed = dfilter_apply_edt(cf->rfcode, &edt);
2924 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
2926 /* Process this packet. */
2927 if (print_packet_info) {
2928 /* We're printing packet information; print the information for
2931 print_packet(cf, &edt);
2933 print_packet(cf, NULL);
2935 /* The ANSI C standard does not appear to *require* that a line-buffered
2936 stream be flushed to the host environment whenever a newline is
2937 written, it just says that, on such a stream, characters "are
2938 intended to be transmitted to or from the host environment as a
2939 block when a new-line character is encountered".
2941 The Visual C++ 6.0 C implementation doesn't do what is intended;
2942 even if you set a stream to be line-buffered, it still doesn't
2943 flush the buffer at the end of every line.
2945 So, if the "-l" flag was specified, we flush the standard output
2946 at the end of a packet. This will do the right thing if we're
2947 printing packet summary lines, and, as we print the entire protocol
2948 tree for a single packet without waiting for anything to happen,
2949 it should be as good as line-buffered mode if we're printing
2950 protocol trees. (The whole reason for the "-l" flag in either
2951 tcpdump or TShark is to allow the output of a live capture to
2952 be piped to a program or script and to have that script see the
2953 information for the packet as soon as it's printed, rather than
2954 having to wait until a standard I/O buffer fills up. */
2958 if (ferror(stdout)) {
2959 show_print_file_io_error(errno);
2965 if (do_dissection) {
2966 epan_dissect_cleanup(&edt);
2967 frame_data_cleanup(&fdata);
2973 write_preamble(capture_file *cf)
2975 switch (output_action) {
2978 return print_preamble(print_stream, cf ? cf->filename : NULL);
2982 write_pdml_preamble(stdout);
2984 write_psml_preamble(stdout);
2985 return !ferror(stdout);
2988 write_fields_preamble(output_fields, stdout);
2989 return !ferror(stdout);
2992 g_assert_not_reached();
2998 get_line_buf(size_t len)
3000 static char *line_bufp = NULL;
3001 static size_t line_buf_len = 256;
3002 size_t new_line_buf_len;
3004 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3005 new_line_buf_len *= 2)
3007 if (line_bufp == NULL) {
3008 line_buf_len = new_line_buf_len;
3009 line_bufp = g_malloc(line_buf_len + 1);
3011 if (new_line_buf_len > line_buf_len) {
3012 line_buf_len = new_line_buf_len;
3013 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
3020 print_columns(capture_file *cf)
3027 line_bufp = get_line_buf(256);
3030 for (i = 0; i < cf->cinfo.num_cols; i++) {
3031 switch (cf->cinfo.col_fmt[i]) {
3035 * Don't print this if we're doing a live capture from a network
3036 * interface - if we're doing a live capture, you won't be
3037 * able to look at the capture in the future (it's not being
3038 * saved anywhere), so the frame numbers are unlikely to be
3041 * (XXX - it might be nice to be able to save and print at
3042 * the same time, sort of like an "Update list of packets
3043 * in real time" capture in Wireshark.)
3045 if (global_capture_opts.iface != NULL)
3048 column_len = strlen(cf->cinfo.col_data[i]);
3051 line_bufp = get_line_buf(buf_offset + column_len);
3052 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%3s", cf->cinfo.col_data[i]);
3058 case COL_ABS_DATE_TIME: /* XXX - wider */
3059 column_len = strlen(cf->cinfo.col_data[i]);
3060 if (column_len < 10)
3062 line_bufp = get_line_buf(buf_offset + column_len);
3063 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%10s", cf->cinfo.col_data[i]);
3069 case COL_DEF_DL_SRC:
3070 case COL_RES_DL_SRC:
3071 case COL_UNRES_DL_SRC:
3072 case COL_DEF_NET_SRC:
3073 case COL_RES_NET_SRC:
3074 case COL_UNRES_NET_SRC:
3075 column_len = strlen(cf->cinfo.col_data[i]);
3076 if (column_len < 12)
3078 line_bufp = get_line_buf(buf_offset + column_len);
3079 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%12s", cf->cinfo.col_data[i]);
3085 case COL_DEF_DL_DST:
3086 case COL_RES_DL_DST:
3087 case COL_UNRES_DL_DST:
3088 case COL_DEF_NET_DST:
3089 case COL_RES_NET_DST:
3090 case COL_UNRES_NET_DST:
3091 column_len = strlen(cf->cinfo.col_data[i]);
3092 if (column_len < 12)
3094 line_bufp = get_line_buf(buf_offset + column_len);
3095 g_snprintf(line_bufp + buf_offset, (int)column_len + 1, "%-12s", cf->cinfo.col_data[i]);
3099 column_len = strlen(cf->cinfo.col_data[i]);
3100 line_bufp = get_line_buf(buf_offset + column_len);
3101 g_strlcat(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len + 1);
3104 buf_offset += column_len;
3105 if (i != cf->cinfo.num_cols - 1) {
3107 * This isn't the last column, so we need to print a
3108 * separator between this column and the next.
3110 * If we printed a network source and are printing a
3111 * network destination of the same type next, separate
3112 * them with " -> "; if we printed a network destination
3113 * and are printing a network source of the same type
3114 * next, separate them with " <- "; otherwise separate them
3117 * We add enough space to the buffer for " <- " or " -> ",
3118 * even if we're only adding " ".
3120 line_bufp = get_line_buf(buf_offset + 4);
3121 switch (cf->cinfo.col_fmt[i]) {
3126 switch (cf->cinfo.col_fmt[i + 1]) {
3131 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3136 g_strlcat(line_bufp + buf_offset, " ", 5);
3142 case COL_DEF_DL_SRC:
3143 case COL_RES_DL_SRC:
3144 case COL_UNRES_DL_SRC:
3145 switch (cf->cinfo.col_fmt[i + 1]) {
3147 case COL_DEF_DL_DST:
3148 case COL_RES_DL_DST:
3149 case COL_UNRES_DL_DST:
3150 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3155 g_strlcat(line_bufp + buf_offset, " ", 5);
3161 case COL_DEF_NET_SRC:
3162 case COL_RES_NET_SRC:
3163 case COL_UNRES_NET_SRC:
3164 switch (cf->cinfo.col_fmt[i + 1]) {
3166 case COL_DEF_NET_DST:
3167 case COL_RES_NET_DST:
3168 case COL_UNRES_NET_DST:
3169 g_strlcat(line_bufp + buf_offset, " -> ", 5);
3174 g_strlcat(line_bufp + buf_offset, " ", 5);
3183 switch (cf->cinfo.col_fmt[i + 1]) {
3188 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3193 g_strlcat(line_bufp + buf_offset, " ", 5);
3199 case COL_DEF_DL_DST:
3200 case COL_RES_DL_DST:
3201 case COL_UNRES_DL_DST:
3202 switch (cf->cinfo.col_fmt[i + 1]) {
3204 case COL_DEF_DL_SRC:
3205 case COL_RES_DL_SRC:
3206 case COL_UNRES_DL_SRC:
3207 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3212 g_strlcat(line_bufp + buf_offset, " ", 5);
3218 case COL_DEF_NET_DST:
3219 case COL_RES_NET_DST:
3220 case COL_UNRES_NET_DST:
3221 switch (cf->cinfo.col_fmt[i + 1]) {
3223 case COL_DEF_NET_SRC:
3224 case COL_RES_NET_SRC:
3225 case COL_UNRES_NET_SRC:
3226 g_strlcat(line_bufp + buf_offset, " <- ", 5);
3231 g_strlcat(line_bufp + buf_offset, " ", 5);
3238 g_strlcat(line_bufp + buf_offset, " ", 5);
3244 return print_line(print_stream, 0, line_bufp);
3248 print_packet(capture_file *cf, epan_dissect_t *edt)
3250 print_args_t print_args;
3253 /* Print the information in the protocol tree. */
3254 switch (output_action) {
3257 print_args.to_file = TRUE;
3258 print_args.format = print_format;
3259 print_args.print_summary = !verbose;
3260 print_args.print_hex = verbose && print_hex;
3261 print_args.print_formfeed = FALSE;
3262 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
3264 /* init the packet range */
3265 packet_range_init(&print_args.range);
3267 if (!proto_tree_print(&print_args, edt, print_stream))
3270 /* "print_hex_data()" will put out a leading blank line, as well
3271 as a trailing one; print one here, to separate the packets,
3272 only if "print_hex_data()" won't be called. */
3273 if (!print_line(print_stream, 0, ""))
3279 proto_tree_write_pdml(edt, stdout);
3281 return !ferror(stdout);
3283 proto_tree_write_fields(output_fields, edt, stdout);
3285 return !ferror(stdout);
3288 /* Just fill in the columns. */
3289 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3291 /* Now print them. */
3292 switch (output_action) {
3295 if (!print_columns(cf))
3300 proto_tree_write_psml(edt, stdout);
3301 return !ferror(stdout);
3302 case WRITE_FIELDS: /*No non-verbose "fields" format */
3303 g_assert_not_reached();
3308 if (!print_hex_data(print_stream, edt))
3310 if (!print_line(print_stream, 0, ""))
3319 switch (output_action) {
3322 return print_finale(print_stream);
3326 write_pdml_finale(stdout);
3328 write_psml_finale(stdout);
3329 return !ferror(stdout);
3332 write_fields_finale(output_fields, stdout);
3333 return !ferror(stdout);
3336 g_assert_not_reached();
3342 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3346 char err_msg[2048+1];
3348 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3352 /* The open succeeded. Fill in the information for this file. */
3354 /* Cleanup all data structures used for dissection. */
3355 cleanup_dissection();
3356 /* Initialize all data structures used for dissection. */
3360 cf->f_datalen = 0; /* not used, but set it anyway */
3362 /* Set the file name because we need it to set the follow stream filter.
3363 XXX - is that still true? We need it for other reasons, though,
3365 cf->filename = g_strdup(fname);
3367 /* Indicate whether it's a permanent or temporary file. */
3368 cf->is_tempfile = is_tempfile;
3370 /* If it's a temporary capture buffer file, mark it as not saved. */
3371 cf->user_saved = !is_tempfile;
3373 cf->cd_t = wtap_file_type(cf->wth);
3375 cf->drops_known = FALSE;
3377 cf->snap = wtap_snapshot_length(cf->wth);
3378 if (cf->snap == 0) {
3379 /* Snapshot length not known. */
3380 cf->has_snap = FALSE;
3381 cf->snap = WTAP_MAX_PACKET_SIZE;
3383 cf->has_snap = TRUE;
3384 nstime_set_zero(&cf->elapsed_time);
3385 nstime_set_unset(&first_ts);
3386 nstime_set_unset(&prev_dis_ts);
3387 nstime_set_unset(&prev_cap_ts);
3389 cf->state = FILE_READ_IN_PROGRESS;
3391 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3392 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3397 g_snprintf(err_msg, sizeof err_msg,
3398 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3399 cmdarg_err("%s", err_msg);
3404 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3406 char *save_file_string;
3408 save_file_string = output_file_description(fname);
3413 cmdarg_err("Not all the packets could be written to the %s because there is "
3414 "no space left on the file system.",
3420 cmdarg_err("Not all the packets could be written to the %s because you are "
3421 "too close to, or over your disk quota.",
3426 case WTAP_ERR_CANT_CLOSE:
3427 cmdarg_err("The %s couldn't be closed for some unknown reason.",
3431 case WTAP_ERR_SHORT_WRITE:
3432 cmdarg_err("Not all the packets could be written to the %s.",
3438 cmdarg_err("The %s could not be closed: %s.", save_file_string,
3439 wtap_strerror(err));
3441 cmdarg_err("An error occurred while writing to the %s: %s.",
3442 save_file_string, wtap_strerror(err));
3446 g_free(save_file_string);
3450 show_print_file_io_error(int err)
3455 cmdarg_err("Not all the packets could be printed because there is "
3456 "no space left on the file system.");
3461 cmdarg_err("Not all the packets could be printed because you are "
3462 "too close to, or over your disk quota.");
3467 cmdarg_err("An error occurred while printing packets: %s.",
3474 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
3478 static char errmsg_errno[1024+1];
3481 /* Wiretap error. */
3484 case WTAP_ERR_NOT_REGULAR_FILE:
3485 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
3488 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
3489 /* Seen only when opening a capture file for reading. */
3490 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
3493 case WTAP_ERR_UNSUPPORTED:
3494 /* Seen only when opening a capture file for reading. */
3495 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3496 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
3499 errmsg = errmsg_errno;
3502 case WTAP_ERR_CANT_WRITE_TO_PIPE:
3503 /* Seen only when opening a capture file for writing. */
3504 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3505 "The file \"%%s\" is a pipe, and %s capture files can't be "
3506 "written to a pipe.", wtap_file_type_string(file_type));
3507 errmsg = errmsg_errno;
3510 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3511 /* Seen only when opening a capture file for writing. */
3512 errmsg = "TShark doesn't support writing capture files in that format.";
3515 case WTAP_ERR_UNSUPPORTED_ENCAP:
3517 errmsg = "TShark can't save this capture in that format.";
3519 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3520 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3523 errmsg = errmsg_errno;
3527 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3529 errmsg = "TShark can't save this capture in that format.";
3531 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3534 case WTAP_ERR_BAD_RECORD:
3535 /* Seen only when opening a capture file for reading. */
3536 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3537 "The file \"%%s\" appears to be damaged or corrupt.\n"
3540 errmsg = errmsg_errno;
3543 case WTAP_ERR_CANT_OPEN:
3545 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3547 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3550 case WTAP_ERR_SHORT_READ:
3551 errmsg = "The file \"%s\" appears to have been cut short"
3552 " in the middle of a packet or other data.";
3555 case WTAP_ERR_SHORT_WRITE:
3556 errmsg = "A full header couldn't be written to the file \"%s\".";
3559 case WTAP_ERR_DECOMPRESS:
3560 /* Seen only when opening a capture file for reading. */
3561 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3562 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
3565 errmsg = errmsg_errno;
3569 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3570 "The file \"%%s\" could not be %s: %s.",
3571 for_writing ? "created" : "opened",
3572 wtap_strerror(err));
3573 errmsg = errmsg_errno;
3577 errmsg = file_open_error_message(err, for_writing);
3582 * Open/create errors are reported with an console message in TShark.
3585 open_failure_message(const char *filename, int err, gboolean for_writing)
3587 fprintf(stderr, "tshark: ");
3588 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3589 fprintf(stderr, "\n");
3594 * General errors are reported with an console message in TShark.
3597 failure_message(const char *msg_format, va_list ap)
3599 fprintf(stderr, "tshark: ");
3600 vfprintf(stderr, msg_format, ap);
3601 fprintf(stderr, "\n");
3605 * Read errors are reported with an console message in TShark.
3608 read_failure_message(const char *filename, int err)
3610 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3611 filename, strerror(err));
3615 * Write errors are reported with an console message in TShark.
3618 write_failure_message(const char *filename, int err)
3620 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3621 filename, strerror(err));
3625 * Print to the standard error. This is a command-line tool, so there's
3626 * no need to pop up a console.
3629 vfprintf_stderr(const char *fmt, va_list ap)
3631 vfprintf(stderr, fmt, ap);
3635 fprintf_stderr(const char *fmt, ...)
3640 vfprintf_stderr(fmt, ap);
3645 * Report an error in command-line arguments.
3648 cmdarg_err(const char *fmt, ...)
3653 failure_message(fmt, ap);
3658 * Report additional information for an error in command-line arguments.
3661 cmdarg_err_cont(const char *fmt, ...)
3666 vfprintf(stderr, fmt, ap);
3667 fprintf(stderr, "\n");