3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
52 #ifdef HAVE_SYS_STAT_H
53 # include <sys/stat.h>
57 #include "wsutil/wsgetopt.h"
62 #include <epan/exceptions.h>
63 #include <epan/epan-int.h>
64 #include <epan/epan.h>
65 #include <wsutil/crash_info.h>
66 #include <wsutil/privileges.h>
67 #include <wsutil/file_util.h>
68 #include <wsutil/filesystem.h>
69 #include <wsutil/report_err.h>
72 #include <epan/timestamp.h>
73 #include <epan/packet.h>
75 #include <epan/wslua/init_wslua.h>
78 #include "frame_tvbuff.h"
79 #include <epan/disabled_protos.h>
80 #include <epan/prefs.h>
81 #include <epan/column.h>
82 #include <epan/print.h>
83 #include <epan/addr_resolv.h>
85 #include "clopts_common.h"
86 #include "cmdarg_err.h"
87 #include "version_info.h"
89 #include <epan/epan_dissect.h>
91 #include <epan/stat_cmd_args.h>
92 #include <epan/timestamp.h>
93 #include <epan/ex-opt.h>
95 #include "capture_opts.h"
98 #include "capture_ui_utils.h"
99 #include "capture_ifinfo.h"
100 #include "capture-pcap-util.h"
102 #include "capture-wpcap.h"
103 #include <wsutil/unicode-utils.h>
105 #include "capture_session.h"
106 #include "capture_sync.h"
107 #include "capture_opts.h"
108 #endif /* HAVE_LIBPCAP */
110 #include <epan/funnel.h>
113 #include <wsutil/plugins.h>
117 * This is the template for the decode as option; it is shared between the
118 * various functions that output the usage for this parameter.
120 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
122 static guint32 cum_bytes;
123 static const frame_data *ref;
124 static frame_data ref_frame;
125 static frame_data *prev_dis;
126 static frame_data prev_dis_frame;
127 static frame_data *prev_cap;
128 static frame_data prev_cap_frame;
130 static const char* prev_display_dissector_name = NULL;
132 static gboolean perform_two_pass_analysis;
135 * The way the packet decode is to be written.
138 WRITE_TEXT, /* summary or detail text */
139 WRITE_XML, /* PDML or PSML */
140 WRITE_FIELDS /* User defined list of fields */
141 /* Add CSV and the like here */
144 static output_action_e output_action;
145 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
146 static gboolean print_packet_info; /* TRUE if we're to print packet information */
147 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
148 static gboolean print_details; /* TRUE if we're to print packet details information */
149 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
150 static gboolean line_buffered;
151 static gboolean really_quiet = FALSE;
153 static print_format_e print_format = PR_FMT_TEXT;
154 static print_stream_t *print_stream;
156 static output_fields_t* output_fields = NULL;
158 /* The line separator used between packets, changeable via the -S option */
159 static const char *separator = "";
163 * TRUE if we're to print packet counts to keep track of captured packets.
165 static gboolean print_packet_counts;
167 static capture_options global_capture_opts;
168 static capture_session global_capture_session;
171 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
172 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
175 static gboolean capture(void);
176 static void report_counts(void);
178 static BOOL WINAPI capture_cleanup(DWORD);
180 static void capture_cleanup(int);
182 static void report_counts_siginfo(int);
185 #endif /* HAVE_LIBPCAP */
187 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
188 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
189 struct wtap_pkthdr *whdr, const guchar *pd,
191 static void show_capture_file_io_error(const char *, int, gboolean);
192 static void show_print_file_io_error(int err);
193 static gboolean write_preamble(capture_file *cf);
194 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
195 static gboolean write_finale(void);
196 static const char *cf_open_error_message(int err, gchar *err_info,
197 gboolean for_writing, int file_type);
199 static void open_failure_message(const char *filename, int err,
200 gboolean for_writing);
201 static void failure_message(const char *msg_format, va_list ap);
202 static void read_failure_message(const char *filename, int err);
203 static void write_failure_message(const char *filename, int err);
208 const char *sstr; /* The short string */
209 const char *lstr; /* The long string */
213 string_compare(gconstpointer a, gconstpointer b)
215 return strcmp(((const struct string_elem *)a)->sstr,
216 ((const struct string_elem *)b)->sstr);
220 string_elem_print(gpointer data, gpointer not_used _U_)
222 fprintf(stderr, " %s - %s\n",
223 ((struct string_elem *)data)->sstr,
224 ((struct string_elem *)data)->lstr);
228 list_capture_types(void) {
230 struct string_elem *captypes;
233 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
235 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
236 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
237 if (wtap_dump_can_open(i)) {
238 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
239 captypes[i].lstr = wtap_file_type_subtype_string(i);
240 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
243 g_slist_foreach(list, string_elem_print, NULL);
249 print_usage(gboolean print_ver)
256 "TShark " VERSION "%s\n"
257 "Dump and analyze network traffic.\n"
258 "See http://www.wireshark.org for more information.\n"
261 wireshark_svnversion, get_copyright_info());
265 fprintf(output, "\n");
266 fprintf(output, "Usage: tshark [options] ...\n");
267 fprintf(output, "\n");
270 fprintf(output, "Capture interface:\n");
271 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
272 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
273 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
274 fprintf(output, " -p don't capture in promiscuous mode\n");
275 #ifdef HAVE_PCAP_CREATE
276 fprintf(output, " -I capture in monitor mode, if available\n");
278 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
279 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
281 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
282 fprintf(output, " -D print list of interfaces and exit\n");
283 fprintf(output, " -L print list of link-layer types of iface and exit\n");
284 fprintf(output, "\n");
285 fprintf(output, "Capture stop conditions:\n");
286 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
287 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
288 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
289 fprintf(output, " files:NUM - stop after NUM files\n");
290 /*fprintf(output, "\n");*/
291 fprintf(output, "Capture output:\n");
292 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
293 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
294 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
295 #endif /* HAVE_LIBPCAP */
296 #ifdef HAVE_PCAP_REMOTE
297 fprintf(output, "RPCAP options:\n");
298 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
300 /*fprintf(output, "\n");*/
301 fprintf(output, "Input file:\n");
302 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
304 fprintf(output, "\n");
305 fprintf(output, "Processing:\n");
306 fprintf(output, " -2 perform a two-pass analysis\n");
307 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
308 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
309 fprintf(output, " syntax\n");
310 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
311 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
312 fprintf(output, " -d %s ...\n", decode_as_arg_template);
313 fprintf(output, " \"Decode As\", see the man page for details\n");
314 fprintf(output, " Example: tcp.port==8888,http\n");
315 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
316 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
318 /*fprintf(output, "\n");*/
319 fprintf(output, "Output:\n");
320 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
321 fprintf(output, " (or to the standard output for \"-\")\n");
322 fprintf(output, " -C <config profile> start with specified configuration profile\n");
323 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
324 fprintf(output, " an empty \"-F\" option will list the file types\n");
325 fprintf(output, " -V add output of packet tree (Packet Details)\n");
326 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
327 fprintf(output, " separated\n");
328 fprintf(output, " -P print packet summary even when writing to a file\n");
329 fprintf(output, " -S <separator> the line separator to print between packets\n");
330 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
331 fprintf(output, " -T pdml|ps|psml|text|fields\n");
332 fprintf(output, " format of text output (def: text)\n");
333 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
334 fprintf(output, " _ws.col.Info)\n");
335 fprintf(output, " this option can be repeated to print multiple fields\n");
336 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
337 fprintf(output, " header=y|n switch headers on and off\n");
338 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
339 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
340 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
341 fprintf(output, " aggregator\n");
342 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
343 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
344 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
345 fprintf(output, " -l flush standard output after each packet\n");
346 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
347 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
348 fprintf(output, " -g enable group read access on the output file(s)\n");
349 fprintf(output, " -W n Save extra information in the file, if supported.\n");
350 fprintf(output, " n = write network address resolution information\n");
351 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
352 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
353 fprintf(output, " --capture-comment <comment>\n");
354 fprintf(output, " add a capture comment to the newly created\n");
355 fprintf(output, " output file (only for pcapng)\n");
357 fprintf(output, "\n");
358 fprintf(output, "Miscellaneous:\n");
359 fprintf(output, " -h display this help and exit\n");
360 fprintf(output, " -v display version info and exit\n");
361 fprintf(output, " -o <name>:<value> ... override preference setting\n");
362 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
363 fprintf(output, " -G [report] dump one of several available reports and exit\n");
364 fprintf(output, " default report=\"fields\"\n");
365 fprintf(output, " use \"-G ?\" for more help\n");
367 fprintf(output, "\n");
368 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
369 fprintf(output, "You might want to reset it\n");
370 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
371 fprintf(output, "\n");
377 glossary_option_help(void)
383 fprintf(output, "TShark " VERSION "%s\n", wireshark_svnversion);
385 fprintf(output, "\n");
386 fprintf(output, "Usage: tshark -G [report]\n");
387 fprintf(output, "\n");
388 fprintf(output, "Glossary table reports:\n");
389 fprintf(output, " -G column-formats dump column format codes and exit\n");
390 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
391 fprintf(output, " -G fields dump fields glossary and exit\n");
392 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
393 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
394 fprintf(output, " -G plugins dump installed plugins and exit\n");
395 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
396 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
397 fprintf(output, "\n");
398 fprintf(output, "Preference reports:\n");
399 fprintf(output, " -G currentprefs dump current preferences and exit\n");
400 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
401 fprintf(output, "\n");
405 * For a dissector table, print on the stream described by output,
406 * its short name (which is what's used in the "-d" option) and its
410 display_dissector_table_names(const char *table_name, const char *ui_name,
413 if ((prev_display_dissector_name == NULL) ||
414 (strcmp(prev_display_dissector_name, table_name) != 0)) {
415 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
416 prev_display_dissector_name = table_name;
421 * For a dissector handle, print on the stream described by output,
422 * the filter name (which is what's used in the "-d" option) and the full
423 * name for the protocol that corresponds to this handle.
426 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
429 const gchar *proto_filter_name;
430 const gchar *proto_ui_name;
432 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
434 if (proto_id != -1) {
435 proto_filter_name = proto_get_protocol_filter_name(proto_id);
436 proto_ui_name = proto_get_protocol_name(proto_id);
437 g_assert(proto_filter_name != NULL);
438 g_assert(proto_ui_name != NULL);
440 if ((prev_display_dissector_name == NULL) ||
441 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
442 fprintf((FILE *)output, "\t%s (%s)\n",
445 prev_display_dissector_name = proto_filter_name;
451 * The protocol_name_search structure is used by find_protocol_name_func()
452 * to pass parameters and store results
454 struct protocol_name_search{
455 gchar *searched_name; /* Protocol filter name we are looking for */
456 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
457 guint nb_match; /* How many dissectors matched searched_name */
459 typedef struct protocol_name_search *protocol_name_search_t;
462 * This function parses all dissectors associated with a table to find the
463 * one whose protocol has the specified filter name. It is called
464 * as a reference function in a call to dissector_table_foreach_handle.
465 * The name we are looking for, as well as the results, are stored in the
466 * protocol_name_search struct pointed to by user_data.
467 * If called using dissector_table_foreach_handle, we actually parse the
468 * whole list of dissectors.
471 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
475 const gchar *protocol_filter_name;
476 protocol_name_search_t search_info;
480 search_info = (protocol_name_search_t)user_data;
482 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
483 if (proto_id != -1) {
484 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
485 g_assert(protocol_filter_name != NULL);
486 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
488 if (search_info->nb_match == 0) {
489 /* Record this handle only if this is the first match */
490 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
492 search_info->nb_match++;
498 * Allow dissector key names to be sorted alphabetically
502 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
504 return strcmp((const char*)dissector_a, (const char*)dissector_b);
508 * Print all layer type names supported.
509 * We send the output to the stream described by the handle output.
513 fprint_all_layer_types(FILE *output)
516 prev_display_dissector_name = NULL;
517 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
521 * Print all protocol names supported for a specific layer type.
522 * table_name contains the layer type name in which the search is performed.
523 * We send the output to the stream described by the handle output.
527 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
530 prev_display_dissector_name = NULL;
531 dissector_table_foreach_handle(table_name,
532 display_dissector_names,
537 * The function below parses the command-line parameters for the decode as
538 * feature (a string pointer by cl_param).
539 * It checks the format of the command-line, searches for a matching table
540 * and dissector. If a table/dissector match is not found, we display a
541 * summary of the available tables/dissectors (on stderr) and return FALSE.
542 * If everything is fine, we get the "Decode as" preference activated,
543 * then we return TRUE.
546 add_decode_as(const gchar *cl_param)
549 guint32 selector, selector2;
550 gchar *decoded_param;
551 gchar *remaining_param;
553 gchar *dissector_str;
554 dissector_handle_t dissector_matching;
555 dissector_table_t table_matching;
556 ftenum_t dissector_table_selector_type;
557 struct protocol_name_search user_protocol_name;
561 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
564 decoded_param = g_strdup(cl_param);
565 g_assert(decoded_param);
568 /* The lines below will parse this string (modifying it) to extract all
569 necessary information. Note that decoded_param is still needed since
570 strings are not copied - we just save pointers. */
572 /* This section extracts a layer type (table_name) from decoded_param */
573 table_name = decoded_param; /* Layer type string starts from beginning */
575 remaining_param = strchr(table_name, '=');
576 if (remaining_param == NULL) {
577 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
578 /* If the argument does not follow the template, carry on anyway to check
579 if the table name is at least correct. If remaining_param is NULL,
580 we'll exit anyway further down */
583 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
586 /* Remove leading and trailing spaces from the table name */
587 while ( table_name[0] == ' ' )
589 while ( table_name[strlen(table_name) - 1] == ' ' )
590 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
592 /* The following part searches a table matching with the layer type specified */
593 table_matching = NULL;
595 /* Look for the requested table */
596 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
597 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
600 table_matching = find_dissector_table(table_name);
601 if (!table_matching) {
602 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
606 if (!table_matching) {
607 /* Display a list of supported layer types to help the user, if the
608 specified layer type was not found */
609 cmdarg_err("Valid layer types are:");
610 fprint_all_layer_types(stderr);
612 if (remaining_param == NULL || !table_matching) {
613 /* Exit if the layer type was not found, or if no '=' separator was found
615 g_free(decoded_param);
619 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
620 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
623 remaining_param++; /* Move to the second '=' */
624 *remaining_param = '\0'; /* Remove the second '=' */
626 remaining_param++; /* Position after the layer type string */
628 /* This section extracts a selector value (selector_str) from decoded_param */
630 selector_str = remaining_param; /* Next part starts with the selector number */
632 remaining_param = strchr(selector_str, ',');
633 if (remaining_param == NULL) {
634 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
635 /* If the argument does not follow the template, carry on anyway to check
636 if the selector value is at least correct. If remaining_param is NULL,
637 we'll exit anyway further down */
640 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
643 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
645 switch (dissector_table_selector_type) {
651 /* The selector for this table is an unsigned number. Parse it as such.
652 There's no need to remove leading and trailing spaces from the
653 selector number string, because sscanf will do that for us. */
654 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
659 if (op != ':' && op != '-') {
660 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
661 g_free(decoded_param);
665 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
666 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
667 g_free(decoded_param);
671 else if (selector2 < selector) {
672 /* We could swap them for the user, but maybe it's better to call
673 * this out as an error in case it's not what was intended? */
674 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
675 g_free(decoded_param);
680 cmdarg_err("Invalid selector number \"%s\"", selector_str);
681 g_free(decoded_param);
688 /* The selector for this table is a string. */
692 /* There are currently no dissector tables with any types other
693 than the ones listed above. */
694 g_assert_not_reached();
697 if (remaining_param == NULL) {
698 /* Exit if no ',' separator was found (see above) */
699 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
700 fprint_all_protocols_for_layer_types(stderr, table_name);
701 g_free(decoded_param);
705 remaining_param++; /* Position after the selector number string */
707 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
709 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
711 /* Remove leading and trailing spaces from the dissector name */
712 while ( dissector_str[0] == ' ' )
714 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
715 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
717 dissector_matching = NULL;
719 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
720 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 */
721 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
724 user_protocol_name.nb_match = 0;
725 user_protocol_name.searched_name = dissector_str;
726 user_protocol_name.matched_handle = NULL;
728 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 */
730 if (user_protocol_name.nb_match != 0) {
731 dissector_matching = user_protocol_name.matched_handle;
732 if (user_protocol_name.nb_match > 1) {
733 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
737 /* OK, check whether the problem is that there isn't any such
738 protocol, or that there is but it's not specified as a protocol
739 that's valid for that dissector table.
740 Note, we don't exit here, but dissector_matching will remain NULL,
742 if (proto_get_id_by_filter_name(dissector_str) == -1) {
743 /* No such protocol */
744 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
746 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
747 dissector_str, table_name);
752 if (!dissector_matching) {
753 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
754 fprint_all_protocols_for_layer_types(stderr, table_name);
755 g_free(decoded_param);
759 /* This is the end of the code that parses the command-line options.
760 All information is now stored in the variables:
764 The above variables that are strings are still pointing to areas within
765 decoded_parm. decoded_parm thus still needs to be kept allocated in
766 until we stop needing these variables
767 decoded_param will be deallocated at each exit point of this function */
770 /* We now have a pointer to the handle for the requested dissector
771 (requested protocol) inside the variable dissector_matching */
772 switch (dissector_table_selector_type) {
778 /* The selector for this table is an unsigned number. */
780 dissector_change_uint(table_name, selector, dissector_matching);
781 } else if (op == ':') {
782 for (i = selector; i < (guint64)selector + selector2; i++) {
783 dissector_change_uint(table_name, (guint32)i, dissector_matching);
785 } else { /* op == '-' */
786 for (i = selector; i <= selector2; i++) {
787 dissector_change_uint(table_name, (guint32)i, dissector_matching);
794 /* The selector for this table is a string. */
795 dissector_change_string(table_name, selector_str, dissector_matching);
799 /* There are currently no dissector tables with any types other
800 than the ones listed above. */
801 g_assert_not_reached();
803 g_free(decoded_param); /* "Decode As" rule has been successfully added */
808 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
809 const gchar *message, gpointer user_data)
811 /* ignore log message, if log_level isn't interesting based
812 upon the console log preferences.
813 If the preferences haven't been loaded loaded yet, display the
816 The default console_log_level preference value is such that only
817 ERROR, CRITICAL and WARNING level messages are processed;
818 MESSAGE, INFO and DEBUG level messages are ignored.
820 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
821 ERROR and CRITICAL level messages so the current code is a behavioral
822 change. The current behavior is the same as in Wireshark.
824 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
825 prefs.console_log_level != 0) {
829 g_log_default_handler(log_domain, log_level, message, user_data);
834 output_file_description(const char *fname)
836 char *save_file_string;
838 /* Get a string that describes what we're writing to */
839 if (strcmp(fname, "-") == 0) {
840 /* We're writing to the standard output */
841 save_file_string = g_strdup("standard output");
843 /* We're writing to a file with the name in save_file */
844 save_file_string = g_strdup_printf("file \"%s\"", fname);
846 return save_file_string;
850 print_current_user(void) {
851 gchar *cur_user, *cur_group;
853 if (started_with_special_privs()) {
854 cur_user = get_cur_username();
855 cur_group = get_cur_groupname();
856 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
857 cur_user, cur_group);
860 if (running_with_special_privs()) {
861 fprintf(stderr, " This could be dangerous.");
863 fprintf(stderr, "\n");
868 check_capture_privs(void) {
871 /* Warn the user if npf.sys isn't loaded. */
872 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
873 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
874 "capturing or\nlisting interfaces.\n");
880 show_version(GString *comp_info_str, GString *runtime_info_str)
882 printf("TShark " VERSION "%s\n"
889 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
890 runtime_info_str->str);
894 main(int argc, char *argv[])
896 GString *comp_info_str;
897 GString *runtime_info_str;
898 char *init_progfile_dir_error;
900 struct option long_options[] = {
901 {(char *)"capture-comment", required_argument, NULL, LONGOPT_NUM_CAP_COMMENT },
904 gboolean arg_error = FALSE;
910 char *gpf_path, *pf_path;
911 char *gdp_path, *dp_path;
912 int gpf_open_errno, gpf_read_errno;
913 int pf_open_errno, pf_read_errno;
914 int gdp_open_errno, gdp_read_errno;
915 int dp_open_errno, dp_read_errno;
917 volatile int exit_status = 0;
919 gboolean list_link_layer_types = FALSE;
920 gboolean start_capture = FALSE;
925 gboolean capture_option_specified = FALSE;
927 gboolean quiet = FALSE;
928 #ifdef PCAP_NG_DEFAULT
929 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
931 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
933 volatile gboolean out_file_name_res = FALSE;
934 gchar *volatile cf_name = NULL;
935 gchar *rfilter = NULL;
936 gchar *dfilter = NULL;
937 #ifdef HAVE_PCAP_OPEN_DEAD
938 struct bpf_program fcode;
940 dfilter_t *rfcode = NULL;
941 dfilter_t *dfcode = NULL;
946 gchar *output_only = NULL;
948 #ifdef HAVE_PCAP_REMOTE
949 #define OPTSTRING_A "A:"
951 #define OPTSTRING_A ""
954 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
955 #define OPTSTRING_B "B:"
957 #define OPTSTRING_B ""
958 #endif /* _WIN32 or HAVE_PCAP_CREATE */
959 #else /* HAVE_LIBPCAP */
960 #define OPTSTRING_B ""
961 #endif /* HAVE_LIBPCAP */
963 #ifdef HAVE_PCAP_CREATE
964 #define OPTSTRING_I "I"
966 #define OPTSTRING_I ""
969 /* the leading - ensures that getopt() does not permute the argv[] entries
970 we have to make sure that the first getopt() preserves the content of argv[]
971 for the subsequent getopt_long() call */
972 #define OPTSTRING "-2a:" OPTSTRING_A "b:" OPTSTRING_B "c:C:d:De:E:f:F:gG:hH:i:" OPTSTRING_I "K:lLnN:o:O:pPqQr:R:s:S:t:T:u:vVw:W:xX:y:Y:z:"
974 static const char optstring[] = OPTSTRING;
976 /* Assemble the compile-time version information string */
977 comp_info_str = g_string_new("Compiled ");
978 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
980 /* Assemble the run-time version information string */
981 runtime_info_str = g_string_new("Running ");
982 get_runtime_version_info(runtime_info_str, NULL);
984 /* Add it to the information to be reported on a crash. */
985 ws_add_crash_info("TShark " VERSION "%s\n"
990 wireshark_svnversion, comp_info_str->str, runtime_info_str->str);
993 arg_list_utf_16to8(argc, argv);
994 create_app_running_mutex();
995 #if !GLIB_CHECK_VERSION(2,31,0)
1001 * Get credential information for later use.
1003 init_process_policies();
1006 * Attempt to get the pathname of the executable file.
1008 init_progfile_dir_error = init_progfile_dir(argv[0], main);
1009 if (init_progfile_dir_error != NULL) {
1010 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1011 init_progfile_dir_error);
1015 * In order to have the -X opts assigned before the wslua machine starts
1016 * we need to call getopts before epan_init() gets called.
1019 optind_initial = optind;
1021 while ((opt = getopt(argc, argv, optstring)) != -1) {
1023 case 'C': /* Configuration Profile */
1024 if (profile_exists (optarg, FALSE)) {
1025 set_profile_name (optarg);
1027 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1031 case 'P': /* Print packet summary info even when writing to a file */
1032 print_packet_info = TRUE;
1033 print_summary = TRUE;
1035 case 'O': /* Only output these protocols */
1036 output_only = g_strdup(optarg);
1038 case 'V': /* Verbose */
1039 print_details = TRUE;
1040 print_packet_info = TRUE;
1042 case 'x': /* Print packet data in hex (and ASCII) */
1044 /* The user asked for hex output, so let's ensure they get it,
1045 * even if they're writing to a file.
1047 print_packet_info = TRUE;
1058 * Print packet summary information is the default, unless either -V or -x
1059 * were specified and -P was not. Note that this is new behavior, which
1060 * allows for the possibility of printing only hex/ascii output without
1061 * necessarily requiring that either the summary or details be printed too.
1063 if (print_summary == -1)
1064 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1066 optind = optind_initial;
1071 /** Send All g_log messages to our own handler **/
1075 G_LOG_LEVEL_CRITICAL|
1076 G_LOG_LEVEL_WARNING|
1077 G_LOG_LEVEL_MESSAGE|
1080 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1082 g_log_set_handler(NULL,
1083 (GLogLevelFlags)log_flags,
1084 tshark_log_handler, NULL /* user_data */);
1085 g_log_set_handler(LOG_DOMAIN_MAIN,
1086 (GLogLevelFlags)log_flags,
1087 tshark_log_handler, NULL /* user_data */);
1090 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1091 (GLogLevelFlags)log_flags,
1092 tshark_log_handler, NULL /* user_data */);
1093 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1094 (GLogLevelFlags)log_flags,
1095 tshark_log_handler, NULL /* user_data */);
1098 initialize_funnel_ops();
1100 init_report_err(failure_message, open_failure_message, read_failure_message,
1101 write_failure_message);
1104 capture_opts_init(&global_capture_opts);
1105 capture_session_init(&global_capture_session, (void *)&cfile);
1108 timestamp_set_type(TS_RELATIVE);
1109 timestamp_set_precision(TS_PREC_AUTO);
1110 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1113 /* Register all the plugin types we have. */
1114 epan_register_plugin_types(); /* Types known to libwireshark */
1115 wtap_register_plugin_types(); /* Types known to libwiretap */
1117 /* Scan for plugins. This does *not* call their registration routines;
1118 that's done later. */
1121 /* Register all libwiretap plugin modules. */
1122 register_all_wiretap_modules();
1125 /* Register all dissectors; we must do this before checking for the
1126 "-G" flag, as the "-G" flag dumps information registered by the
1127 dissectors, and we must do it before we read the preferences, in
1128 case any dissectors register preferences. */
1129 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1131 /* Register all tap listeners; we do this before we parse the arguments,
1132 as the "-z" argument can specify a registered tap. */
1134 /* we register the plugin taps before the other taps because
1135 stats_tree taps plugins will be registered as tap listeners
1136 by stats_tree_stat.c and need to registered before that */
1138 register_all_plugin_tap_listeners();
1140 register_all_tap_listeners();
1142 /* If invoked with the "-G" flag, we dump out information based on
1143 the argument to the "-G" flag; if no argument is specified,
1144 for backwards compatibility we dump out a glossary of display
1147 XXX - we do this here, for now, to support "-G" with no arguments.
1148 If none of our build or other processes uses "-G" with no arguments,
1149 we can just process it with the other arguments. */
1150 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1151 proto_initialize_all_prefixes();
1154 proto_registrar_dump_fields();
1156 if (strcmp(argv[2], "column-formats") == 0)
1157 column_dump_column_formats();
1158 else if (strcmp(argv[2], "currentprefs") == 0) {
1159 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1160 &pf_open_errno, &pf_read_errno, &pf_path);
1163 else if (strcmp(argv[2], "decodes") == 0)
1164 dissector_dump_decodes();
1165 else if (strcmp(argv[2], "defaultprefs") == 0)
1167 else if (strcmp(argv[2], "fields") == 0)
1168 proto_registrar_dump_fields();
1169 else if (strcmp(argv[2], "ftypes") == 0)
1170 proto_registrar_dump_ftypes();
1171 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1172 dissector_dump_heur_decodes();
1173 else if (strcmp(argv[2], "plugins") == 0) {
1178 wslua_plugins_dump_all();
1181 else if (strcmp(argv[2], "protocols") == 0)
1182 proto_registrar_dump_protocols();
1183 else if (strcmp(argv[2], "values") == 0)
1184 proto_registrar_dump_values();
1185 else if (strcmp(argv[2], "?") == 0)
1186 glossary_option_help();
1187 else if (strcmp(argv[2], "-?") == 0)
1188 glossary_option_help();
1190 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1197 /* Set the C-language locale to the native environment. */
1198 setlocale(LC_ALL, "");
1200 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1201 &pf_open_errno, &pf_read_errno, &pf_path);
1202 if (gpf_path != NULL) {
1203 if (gpf_open_errno != 0) {
1204 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1205 pf_path, g_strerror(gpf_open_errno));
1207 if (gpf_read_errno != 0) {
1208 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1209 pf_path, g_strerror(gpf_read_errno));
1212 if (pf_path != NULL) {
1213 if (pf_open_errno != 0) {
1214 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1215 g_strerror(pf_open_errno));
1217 if (pf_read_errno != 0) {
1218 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1219 pf_path, g_strerror(pf_read_errno));
1225 /* Read the disabled protocols file. */
1226 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1227 &dp_path, &dp_open_errno, &dp_read_errno);
1228 if (gdp_path != NULL) {
1229 if (gdp_open_errno != 0) {
1230 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1231 gdp_path, g_strerror(gdp_open_errno));
1233 if (gdp_read_errno != 0) {
1234 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1235 gdp_path, g_strerror(gdp_read_errno));
1239 if (dp_path != NULL) {
1240 if (dp_open_errno != 0) {
1242 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1243 g_strerror(dp_open_errno));
1245 if (dp_read_errno != 0) {
1247 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1248 g_strerror(dp_read_errno));
1253 check_capture_privs();
1255 cap_file_init(&cfile);
1257 /* Print format defaults to this. */
1258 print_format = PR_FMT_TEXT;
1260 output_fields = output_fields_new();
1262 /* Now get our args */
1263 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1265 case '2': /* Perform two pass analysis */
1266 perform_two_pass_analysis = TRUE;
1268 case 'a': /* autostop criteria */
1269 case 'b': /* Ringbuffer option */
1270 case 'c': /* Capture x packets */
1271 case 'f': /* capture filter */
1272 case 'g': /* enable group read access on file(s) */
1273 case 'i': /* Use interface x */
1274 case 'p': /* Don't capture in promiscuous mode */
1275 #ifdef HAVE_PCAP_REMOTE
1276 case 'A': /* Authentication */
1278 #ifdef HAVE_PCAP_CREATE
1279 case 'I': /* Capture in monitor mode, if available */
1281 case 's': /* Set the snapshot (capture) length */
1282 case 'w': /* Write to capture file x */
1283 case 'y': /* Set the pcap data link type */
1284 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1285 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1286 case 'B': /* Buffer size */
1287 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1289 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1294 capture_option_specified = TRUE;
1299 /* Configuration profile settings were already processed just ignore them this time*/
1301 case 'd': /* Decode as rule */
1302 if (!add_decode_as(optarg))
1305 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1306 case 'K': /* Kerberos keytab file */
1307 read_keytab_file(optarg);
1310 case 'D': /* Print a list of capture devices and exit */
1312 if_list = capture_interface_list(&err, &err_str,NULL);
1313 if (if_list == NULL) {
1315 case CANT_GET_INTERFACE_LIST:
1316 case DONT_HAVE_PCAP:
1317 cmdarg_err("%s", err_str);
1321 case NO_INTERFACES_FOUND:
1322 cmdarg_err("There are no interfaces on which a capture can be done");
1327 capture_opts_print_interfaces(if_list);
1328 free_interface_list(if_list);
1331 capture_option_specified = TRUE;
1337 output_fields_add(output_fields, optarg);
1341 if (!output_fields_set_option(output_fields, optarg)) {
1342 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1343 output_fields_list_options(stderr);
1348 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1349 if (out_file_type < 0) {
1350 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1351 list_capture_types();
1355 case 'W': /* Select extra information to save in our capture file */
1356 /* This is patterned after the -N flag which may not be the best idea. */
1357 if (strchr(optarg, 'n')) {
1358 out_file_name_res = TRUE;
1360 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1361 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1365 case 'H': /* Read address to name mappings from a hosts file */
1366 if (! add_hosts_file(optarg))
1368 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1371 out_file_name_res = TRUE;
1374 case 'h': /* Print help and exit */
1378 case 'l': /* "Line-buffer" standard output */
1379 /* This isn't line-buffering, strictly speaking, it's just
1380 flushing the standard output after the information for
1381 each packet is printed; however, that should be good
1382 enough for all the purposes to which "-l" is put (and
1383 is probably actually better for "-V", as it does fewer
1386 See the comment in "process_packet()" for an explanation of
1387 why we do that, and why we don't just use "setvbuf()" to
1388 make the standard output line-buffered (short version: in
1389 Windows, "line-buffered" is the same as "fully-buffered",
1390 and the output buffer is only flushed when it fills up). */
1391 line_buffered = TRUE;
1393 case 'L': /* Print list of link-layer types and exit */
1395 list_link_layer_types = TRUE;
1397 capture_option_specified = TRUE;
1401 case 'n': /* No name resolution */
1402 gbl_resolv_flags.mac_name = FALSE;
1403 gbl_resolv_flags.network_name = FALSE;
1404 gbl_resolv_flags.transport_name = FALSE;
1405 gbl_resolv_flags.concurrent_dns = FALSE;
1407 case 'N': /* Select what types of addresses/port #s to resolve */
1408 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1409 if (badopt != '\0') {
1410 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1412 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1413 "\t'm' to enable MAC address resolution\n"
1414 "\t'n' to enable network address resolution\n"
1415 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1416 "\t for network address resolution\n"
1417 "\t't' to enable transport-layer port number resolution");
1421 case 'o': /* Override preference from command line */
1422 switch (prefs_set_pref(optarg)) {
1427 case PREFS_SET_SYNTAX_ERR:
1428 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1432 case PREFS_SET_NO_SUCH_PREF:
1433 case PREFS_SET_OBSOLETE:
1434 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1439 case 'q': /* Quiet */
1442 case 'Q': /* Really quiet */
1444 really_quiet = TRUE;
1446 case 'r': /* Read capture file x */
1447 cf_name = g_strdup(optarg);
1449 case 'R': /* Read file filter */
1453 /* already processed; just ignore it now */
1455 case 'S': /* Set the line Separator to be printed between packets */
1456 separator = strdup(optarg);
1458 case 't': /* Time stamp type */
1459 if (strcmp(optarg, "r") == 0)
1460 timestamp_set_type(TS_RELATIVE);
1461 else if (strcmp(optarg, "a") == 0)
1462 timestamp_set_type(TS_ABSOLUTE);
1463 else if (strcmp(optarg, "ad") == 0)
1464 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1465 else if (strcmp(optarg, "adoy") == 0)
1466 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1467 else if (strcmp(optarg, "d") == 0)
1468 timestamp_set_type(TS_DELTA);
1469 else if (strcmp(optarg, "dd") == 0)
1470 timestamp_set_type(TS_DELTA_DIS);
1471 else if (strcmp(optarg, "e") == 0)
1472 timestamp_set_type(TS_EPOCH);
1473 else if (strcmp(optarg, "u") == 0)
1474 timestamp_set_type(TS_UTC);
1475 else if (strcmp(optarg, "ud") == 0)
1476 timestamp_set_type(TS_UTC_WITH_YMD);
1477 else if (strcmp(optarg, "udoy") == 0)
1478 timestamp_set_type(TS_UTC_WITH_YDOY);
1480 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1481 cmdarg_err_cont("\t\"a\" for absolute\n"
1482 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1483 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1484 "\t\"d\" for delta\n"
1485 "\t\"dd\" for delta displayed\n"
1486 "\t\"e\" for epoch\n"
1487 "\t\"r\" for relative\n"
1488 "\t\"u\" for absolute UTC\n"
1489 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1490 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1494 case 'T': /* printing Type */
1495 if (strcmp(optarg, "text") == 0) {
1496 output_action = WRITE_TEXT;
1497 print_format = PR_FMT_TEXT;
1498 } else if (strcmp(optarg, "ps") == 0) {
1499 output_action = WRITE_TEXT;
1500 print_format = PR_FMT_PS;
1501 } else if (strcmp(optarg, "pdml") == 0) {
1502 output_action = WRITE_XML;
1503 print_details = TRUE; /* Need details */
1504 print_summary = FALSE; /* Don't allow summary */
1505 } else if (strcmp(optarg, "psml") == 0) {
1506 output_action = WRITE_XML;
1507 print_details = FALSE; /* Don't allow details */
1508 print_summary = TRUE; /* Need summary */
1509 } else if (strcmp(optarg, "fields") == 0) {
1510 output_action = WRITE_FIELDS;
1511 print_details = TRUE; /* Need full tree info */
1512 print_summary = FALSE; /* Don't allow summary */
1514 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1515 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1516 "\t specified by the -E option.\n"
1517 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1518 "\t details of a decoded packet. This information is equivalent to\n"
1519 "\t the packet details printed with the -V flag.\n"
1520 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1521 "\t the packets, or a multi-line view of the details of each of\n"
1522 "\t the packets, depending on whether the -V flag was specified.\n"
1523 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1524 "\t summary information of a decoded packet. This information is\n"
1525 "\t equivalent to the information shown in the one-line summary\n"
1526 "\t printed by default.\n"
1527 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1528 "\t packets, or a multi-line view of the details of each of the\n"
1529 "\t packets, depending on whether the -V flag was specified.\n"
1530 "\t This is the default.");
1534 case 'u': /* Seconds type */
1535 if (strcmp(optarg, "s") == 0)
1536 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1537 else if (strcmp(optarg, "hms") == 0)
1538 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1540 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1541 cmdarg_err_cont("\t\"s\" for seconds\n"
1542 "\t\"hms\" for hours, minutes and seconds");
1546 case 'v': /* Show version and exit */
1548 show_version(comp_info_str, runtime_info_str);
1549 g_string_free(comp_info_str, TRUE);
1550 g_string_free(runtime_info_str, TRUE);
1551 /* We don't really have to cleanup here, but it's a convenient way to test
1552 * start-up and shut-down of the epan library without any UI-specific
1553 * cruft getting in the way. Makes the results of running
1554 * $ ./tools/valgrind-wireshark -n
1555 * much more useful. */
1559 case 'O': /* Only output these protocols */
1560 /* already processed; just ignore it now */
1562 case 'V': /* Verbose */
1563 /* already processed; just ignore it now */
1565 case 'x': /* Print packet data in hex (and ASCII) */
1566 /* already processed; just ignore it now */
1574 /* We won't call the init function for the stat this soon
1575 as it would disallow MATE's fields (which are registered
1576 by the preferences set callback) from being used as
1577 part of a tap filter. Instead, we just add the argument
1578 to a list of stat arguments. */
1579 if (!process_stat_cmd_arg(optarg)) {
1580 if (strcmp("help", optarg)==0) {
1581 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1582 list_stat_cmd_args();
1585 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1586 list_stat_cmd_args();
1591 case '?': /* Bad flag - print usage message */
1594 list_capture_types();
1604 /* If we specified output fields, but not the output field type... */
1605 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1606 cmdarg_err("Output fields were specified with \"-e\", "
1607 "but \"-Tfields\" was not specified.");
1609 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1610 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1611 "specified with \"-e\".");
1616 /* If no capture filter or display filter has been specified, and there are
1617 still command-line arguments, treat them as the tokens of a capture
1618 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1619 flag was specified. */
1620 if (optind < argc) {
1621 if (cf_name != NULL) {
1622 if (dfilter != NULL) {
1623 cmdarg_err("Display filters were specified both with \"-d\" "
1624 "and with additional command-line arguments.");
1627 dfilter = get_args_as_string(argc, argv, optind);
1632 if (global_capture_opts.default_options.cfilter) {
1633 cmdarg_err("A default capture filter was specified both with \"-f\""
1634 " and with additional command-line arguments.");
1637 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1638 interface_options interface_opts;
1639 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1640 if (interface_opts.cfilter == NULL) {
1641 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1642 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1643 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1645 cmdarg_err("A capture filter was specified both with \"-f\""
1646 " and with additional command-line arguments.");
1650 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1652 capture_option_specified = TRUE;
1658 if (!global_capture_opts.saving_to_file) {
1659 /* We're not saving the capture to a file; if "-q" wasn't specified,
1660 we should print packet information */
1662 print_packet_info = TRUE;
1664 /* We're saving to a file; if we're writing to the standard output.
1665 and we'll also be writing dissected packets to the standard
1666 output, reject the request. At best, we could redirect that
1667 to the standard error; we *can't* write both to the standard
1668 output and have either of them be useful. */
1669 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1670 cmdarg_err("You can't write both raw packet data and dissected packets"
1671 " to the standard output.");
1676 /* We're not saving the capture to a file; if "-q" wasn't specified,
1677 we should print packet information */
1679 print_packet_info = TRUE;
1682 #ifndef HAVE_LIBPCAP
1683 if (capture_option_specified)
1684 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1692 if (output_action != WRITE_TEXT) {
1693 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1698 if (output_only != NULL) {
1701 if (!print_details) {
1702 cmdarg_err("-O requires -V");
1706 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1707 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1708 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1712 if (rfilter != NULL && !perform_two_pass_analysis) {
1713 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1718 if (list_link_layer_types) {
1719 /* We're supposed to list the link-layer types for an interface;
1720 did the user also specify a capture file to be read? */
1722 /* Yes - that's bogus. */
1723 cmdarg_err("You can't specify -L and a capture file to be read.");
1726 /* No - did they specify a ring buffer option? */
1727 if (global_capture_opts.multi_files_on) {
1728 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1734 * "-r" was specified, so we're reading a capture file.
1735 * Capture options don't apply here.
1738 /* We don't support capture filters when reading from a capture file
1739 (the BPF compiler doesn't support all link-layer types that we
1740 support in capture files we read). */
1741 if (global_capture_opts.default_options.cfilter) {
1742 cmdarg_err("Only read filters, not capture filters, "
1743 "can be specified when reading a capture file.");
1746 if (global_capture_opts.multi_files_on) {
1747 cmdarg_err("Multiple capture files requested, but "
1748 "a capture isn't being done.");
1751 if (global_capture_opts.has_file_duration) {
1752 cmdarg_err("Switching capture files after a time interval was specified, but "
1753 "a capture isn't being done.");
1756 if (global_capture_opts.has_ring_num_files) {
1757 cmdarg_err("A ring buffer of capture files was specified, but "
1758 "a capture isn't being done.");
1761 if (global_capture_opts.has_autostop_files) {
1762 cmdarg_err("A maximum number of capture files was specified, but "
1763 "a capture isn't being done.");
1766 if (global_capture_opts.capture_comment) {
1767 cmdarg_err("A capture comment was specified, but "
1768 "a capture isn't being done.\nThere's no support for adding "
1769 "a capture comment to an existing capture file.");
1773 /* Note: TShark now allows the restriction of a _read_ file by packet count
1774 * and byte count as well as a write file. Other autostop options remain valid
1775 * only for a write file.
1777 if (global_capture_opts.has_autostop_duration) {
1778 cmdarg_err("A maximum capture time was specified, but "
1779 "a capture isn't being done.");
1784 * "-r" wasn't specified, so we're doing a live capture.
1786 if (perform_two_pass_analysis) {
1787 /* Two-pass analysis doesn't work with live capture since it requires us
1788 * to buffer packets until we've read all of them, but a live capture
1789 * has no useful/meaningful definition of "all" */
1790 cmdarg_err("Live captures do not support two-pass analysis.");
1794 if (global_capture_opts.saving_to_file) {
1795 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1797 /* When capturing, we only support writing pcap or pcap-ng format. */
1798 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1799 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1800 cmdarg_err("Live captures can only be saved in libpcap format.");
1803 if (global_capture_opts.capture_comment &&
1804 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1805 cmdarg_err("A capture comment can only be written to a pcapng file.");
1808 if (global_capture_opts.multi_files_on) {
1809 /* Multiple-file mode doesn't work under certain conditions:
1810 a) it doesn't work if you're writing to the standard output;
1811 b) it doesn't work if you're writing to a pipe;
1813 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1814 cmdarg_err("Multiple capture files requested, but "
1815 "the capture is being written to the standard output.");
1818 if (global_capture_opts.output_to_pipe) {
1819 cmdarg_err("Multiple capture files requested, but "
1820 "the capture file is a pipe.");
1823 if (!global_capture_opts.has_autostop_filesize &&
1824 !global_capture_opts.has_file_duration) {
1825 cmdarg_err("Multiple capture files requested, but "
1826 "no maximum capture file size or duration was specified.");
1830 /* Currently, we don't support read or display filters when capturing
1831 and saving the packets. */
1832 if (rfilter != NULL) {
1833 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1836 if (dfilter != NULL) {
1837 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1841 /* They didn't specify a "-w" flag, so we won't be saving to a
1842 capture file. Check for options that only make sense if
1843 we're saving to a file. */
1844 if (global_capture_opts.has_autostop_filesize) {
1845 cmdarg_err("Maximum capture file size specified, but "
1846 "capture isn't being saved to a file.");
1849 if (global_capture_opts.multi_files_on) {
1850 cmdarg_err("Multiple capture files requested, but "
1851 "the capture isn't being saved to a file.");
1854 if (global_capture_opts.capture_comment) {
1855 cmdarg_err("A capture comment was specified, but "
1856 "the capture isn't being saved to a file.");
1865 /* Start windows sockets */
1866 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1869 /* Notify all registered modules that have had any of their preferences
1870 changed either from one of the preferences file or from the command
1871 line that their preferences have changed. */
1874 /* At this point MATE will have registered its field array so we can
1875 have a tap filter with one of MATE's late-registered fields as part
1876 of the filter. We can now process all the "-z" arguments. */
1877 start_requested_stats();
1880 /* We currently don't support taps, or printing dissected packets,
1881 if we're writing to a pipe. */
1882 if (global_capture_opts.saving_to_file &&
1883 global_capture_opts.output_to_pipe) {
1884 if (tap_listeners_require_dissection()) {
1885 cmdarg_err("Taps aren't supported when saving to a pipe.");
1888 if (print_packet_info) {
1889 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1895 /* disabled protocols as per configuration file */
1896 if (gdp_path == NULL && dp_path == NULL) {
1897 set_disabled_protos_list();
1900 /* Build the column format array */
1901 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1904 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1905 capture_opts_trim_ring_num_files(&global_capture_opts);
1908 if (rfilter != NULL) {
1909 if (!dfilter_compile(rfilter, &rfcode)) {
1910 cmdarg_err("%s", dfilter_error_msg);
1912 #ifdef HAVE_PCAP_OPEN_DEAD
1916 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1918 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1920 " Note: That read filter code looks like a valid capture filter;\n"
1921 " maybe you mixed them up?");
1930 cfile.rfcode = rfcode;
1932 if (dfilter != NULL) {
1933 if (!dfilter_compile(dfilter, &dfcode)) {
1934 cmdarg_err("%s", dfilter_error_msg);
1936 #ifdef HAVE_PCAP_OPEN_DEAD
1940 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1942 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1944 " Note: That display filter code looks like a valid capture filter;\n"
1945 " maybe you mixed them up?");
1954 cfile.dfcode = dfcode;
1956 if (print_packet_info) {
1957 /* If we're printing as text or PostScript, we have
1958 to create a print stream. */
1959 if (output_action == WRITE_TEXT) {
1960 switch (print_format) {
1963 print_stream = print_stream_text_stdio_new(stdout);
1967 print_stream = print_stream_ps_stdio_new(stdout);
1971 g_assert_not_reached();
1976 /* We have to dissect each packet if:
1978 we're printing information about each packet;
1980 we're using a read filter on the packets;
1982 we're using a display filter on the packets;
1984 we're using any taps that need dissection. */
1985 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
1989 * We're reading a capture file.
1993 * Immediately relinquish any special privileges we have; we must not
1994 * be allowed to read any capture files the user running TShark
1997 relinquish_special_privs_perm();
1998 print_current_user();
2000 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
2005 /* Set timestamp precision; there should arguably be a command-line
2006 option to let the user set this. */
2007 switch(wtap_file_tsprecision(cfile.wth)) {
2008 case(WTAP_FILE_TSPREC_SEC):
2009 timestamp_set_precision(TS_PREC_AUTO_SEC);
2011 case(WTAP_FILE_TSPREC_DSEC):
2012 timestamp_set_precision(TS_PREC_AUTO_DSEC);
2014 case(WTAP_FILE_TSPREC_CSEC):
2015 timestamp_set_precision(TS_PREC_AUTO_CSEC);
2017 case(WTAP_FILE_TSPREC_MSEC):
2018 timestamp_set_precision(TS_PREC_AUTO_MSEC);
2020 case(WTAP_FILE_TSPREC_USEC):
2021 timestamp_set_precision(TS_PREC_AUTO_USEC);
2023 case(WTAP_FILE_TSPREC_NSEC):
2024 timestamp_set_precision(TS_PREC_AUTO_NSEC);
2027 g_assert_not_reached();
2030 /* Process the packets in the file */
2033 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2034 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2035 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2037 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
2040 CATCH(OutOfMemoryError) {
2044 "Sorry, but TShark has to terminate now!\n"
2046 "Some infos / workarounds can be found at:\n"
2047 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2052 /* We still dump out the results of taps, etc., as we might have
2053 read some packets; however, we exit with an error status. */
2057 /* No capture file specified, so we're supposed to do a live capture
2058 or get a list of link-layer types for a live capture device;
2059 do we have support for live captures? */
2061 /* if no interface was specified, pick a default */
2062 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2063 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2064 if (exit_status != 0)
2067 /* if requested, list the link layer types and exit */
2068 if (list_link_layer_types) {
2071 /* Get the list of link-layer types for the capture devices. */
2072 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2073 interface_options interface_opts;
2074 if_capabilities_t *caps;
2076 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2077 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2079 cmdarg_err("%s", err_str);
2083 if (caps->data_link_types == NULL) {
2084 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2087 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2088 free_if_capabilities(caps);
2094 * If the standard error isn't a terminal, don't print packet counts,
2095 * as they won't show up on the user's terminal and they'll get in
2096 * the way of error messages in the file (to which we assume the
2097 * standard error was redirected; if it's redirected to the null
2098 * device, there's no point in printing packet counts anyway).
2100 * Otherwise, if we're printing packet information and the standard
2101 * output is a terminal (which we assume means the standard output and
2102 * error are going to the same terminal), don't print packet counts,
2103 * as they'll get in the way of the packet information.
2105 * Otherwise, if the user specified -q, don't print packet counts.
2107 * Otherwise, print packet counts.
2109 * XXX - what if the user wants to do a live capture, doesn't want
2110 * to save it to a file, doesn't want information printed for each
2111 * packet, does want some "-z" statistic, and wants packet counts
2112 * so they know whether they're seeing any packets? -q will
2113 * suppress the information printed for each packet, but it'll
2114 * also suppress the packet counts.
2116 if (!isatty(fileno(stderr)))
2117 print_packet_counts = FALSE;
2118 else if (print_packet_info && isatty(fileno(stdout)))
2119 print_packet_counts = FALSE;
2121 print_packet_counts = FALSE;
2123 print_packet_counts = TRUE;
2125 if (print_packet_info) {
2126 if (!write_preamble(NULL)) {
2127 show_print_file_io_error(errno);
2132 /* For now, assume libpcap gives microsecond precision. */
2133 timestamp_set_precision(TS_PREC_AUTO_USEC);
2136 * XXX - this returns FALSE if an error occurred, but it also
2137 * returns FALSE if the capture stops because a time limit
2138 * was reached (and possibly other limits), so we can't assume
2139 * it means an error.
2141 * The capture code is a bit twisty, so it doesn't appear to
2142 * be an easy fix. We just ignore the return value for now.
2143 * Instead, pass on the exit status from the capture child.
2146 exit_status = global_capture_session.fork_child_status;
2148 if (print_packet_info) {
2149 if (!write_finale()) {
2151 show_print_file_io_error(err);
2155 /* No - complain. */
2156 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2163 if (cfile.frames != NULL) {
2164 free_frame_data_sequence(cfile.frames);
2165 cfile.frames = NULL;
2168 draw_tap_listeners(TRUE);
2169 funnel_dump_all_text_windows();
2170 epan_free(cfile.epan);
2173 output_fields_free(output_fields);
2174 output_fields = NULL;
2179 /*#define USE_BROKEN_G_MAIN_LOOP*/
2181 #ifdef USE_BROKEN_G_MAIN_LOOP
2184 gboolean loop_running = FALSE;
2186 guint32 packet_count = 0;
2189 /* XXX - move to the right position / file */
2190 /* read from a pipe (callback) */
2191 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
2193 typedef struct pipe_input_tag {
2197 pipe_input_cb_t input_cb;
2198 guint pipe_input_id;
2200 GMutex *callback_running;
2204 static pipe_input_t pipe_input;
2207 /* The timer has expired, see if there's stuff to read from the pipe,
2208 if so, do the callback */
2210 pipe_timer_cb(gpointer data)
2216 pipe_input_t *pipe_input_p = data;
2217 gint iterations = 0;
2219 g_mutex_lock (pipe_input_p->callback_running);
2221 /* try to read data from the pipe only 5 times, to avoid blocking */
2222 while(iterations < 5) {
2223 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2225 /* Oddly enough although Named pipes don't work on win9x,
2226 PeekNamedPipe does !!! */
2227 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2228 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2230 /* Get the child process exit status */
2231 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2234 /* If the Peek returned an error, or there are bytes to be read
2235 or the childwatcher thread has terminated then call the normal
2237 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2239 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2241 /* And call the real handler */
2242 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2243 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2244 /* pipe closed, return false so that the timer is stopped */
2245 g_mutex_unlock (pipe_input_p->callback_running);
2250 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2251 /* No data, stop now */
2258 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2260 g_mutex_unlock (pipe_input_p->callback_running);
2262 /* we didn't stopped the timer, so let it run */
2269 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2272 pipe_input.source = source;
2273 pipe_input.child_process = child_process;
2274 pipe_input.user_data = user_data;
2275 pipe_input.input_cb = input_cb;
2278 #if GLIB_CHECK_VERSION(2,31,0)
2279 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2280 g_mutex_init(pipe_input.callback_running);
2282 pipe_input.callback_running = g_mutex_new();
2284 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2285 do this but that doesn't cover all win32 platforms. GTK can do
2286 this but doesn't seem to work over processes. Attempt to do
2287 something similar here, start a timer and check for data on every
2289 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2290 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2294 static const nstime_t *
2295 tshark_get_frame_ts(void *data, guint32 frame_num)
2297 capture_file *cf = (capture_file *) data;
2299 if (ref && ref->num == frame_num)
2300 return &ref->abs_ts;
2302 if (prev_dis && prev_dis->num == frame_num)
2303 return &prev_dis->abs_ts;
2305 if (prev_cap && prev_cap->num == frame_num)
2306 return &prev_cap->abs_ts;
2309 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2311 return (fd) ? &fd->abs_ts : NULL;
2318 tshark_epan_new(capture_file *cf)
2320 epan_t *epan = epan_new();
2323 epan->get_frame_ts = tshark_get_frame_ts;
2324 epan->get_interface_name = cap_file_get_interface_name;
2325 epan->get_user_comment = NULL;
2336 GString *str = g_string_new("");
2337 #ifdef USE_TSHARK_SELECT
2341 struct sigaction action, oldaction;
2345 * XXX - dropping privileges is still required, until code cleanup is done
2347 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2348 * when it's done, we don't need special privileges to run tshark at all,
2349 * therefore we don't need to drop these privileges
2350 * The only thing we might want to keep is a warning if tshark is run as root,
2351 * as it's no longer necessary and potentially dangerous.
2353 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2354 * We've opened the capture device, so we shouldn't need any special
2355 * privileges any more; relinquish those privileges.
2357 * XXX - if we have saved set-user-ID support, we should give up those
2358 * privileges immediately, and then reclaim them long enough to get
2359 * a list of network interfaces and to open one, and then give them
2360 * up again, so that stuff we do while processing the argument list,
2361 * reading the user's preferences, loading and starting plugins
2362 * (especially *user* plugins), etc. is done with the user's privileges,
2363 * not special privileges.
2365 relinquish_special_privs_perm();
2366 print_current_user();
2368 /* Create new dissection section. */
2369 epan_free(cfile.epan);
2370 cfile.epan = tshark_epan_new(&cfile);
2373 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2374 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2376 /* Catch SIGINT and SIGTERM and, if we get either of them,
2377 clean up and exit. If SIGHUP isn't being ignored, catch
2378 it too and, if we get it, clean up and exit.
2380 We restart any read that was in progress, so that it doesn't
2381 disrupt reading from the sync pipe. The signal handler tells
2382 the capture child to finish; it will report that it finished,
2383 or will exit abnormally, so we'll stop reading from the sync
2384 pipe, pick up the exit status, and quit. */
2385 memset(&action, 0, sizeof(action));
2386 action.sa_handler = capture_cleanup;
2387 action.sa_flags = SA_RESTART;
2388 sigemptyset(&action.sa_mask);
2389 sigaction(SIGTERM, &action, NULL);
2390 sigaction(SIGINT, &action, NULL);
2391 sigaction(SIGHUP, NULL, &oldaction);
2392 if (oldaction.sa_handler == SIG_DFL)
2393 sigaction(SIGHUP, &action, NULL);
2396 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2397 quiet mode, report the number of packets we've captured.
2399 Again, restart any read that was in progress, so that it doesn't
2400 disrupt reading from the sync pipe. */
2401 action.sa_handler = report_counts_siginfo;
2402 action.sa_flags = SA_RESTART;
2403 sigemptyset(&action.sa_mask);
2404 sigaction(SIGINFO, &action, NULL);
2405 #endif /* SIGINFO */
2408 global_capture_session.state = CAPTURE_PREPARING;
2410 /* Let the user know which interfaces were chosen. */
2411 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2412 interface_options interface_opts;
2414 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2415 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2416 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2417 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2420 if (global_capture_opts.ifaces->len < 2)
2422 if (global_capture_opts.ifaces->len < 4)
2425 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2426 interface_options interface_opts;
2428 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2430 if (global_capture_opts.ifaces->len > 2) {
2431 g_string_append_printf(str, ",");
2433 g_string_append_printf(str, " ");
2434 if (i == global_capture_opts.ifaces->len - 1) {
2435 g_string_append_printf(str, "and ");
2438 g_string_append_printf(str, "'%s'", interface_opts.descr);
2441 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2443 if (really_quiet == FALSE)
2444 fprintf(stderr, "Capturing on %s\n", str->str);
2446 g_string_free(str, TRUE);
2448 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2453 /* the actual capture loop
2455 * XXX - glib doesn't seem to provide any event based loop handling.
2457 * XXX - for whatever reason,
2458 * calling g_main_loop_new() ends up in 100% cpu load.
2460 * But that doesn't matter: in UNIX we can use select() to find an input
2461 * source with something to do.
2463 * But that doesn't matter because we're in a CLI (that doesn't need to
2464 * update a GUI or something at the same time) so it's OK if we block
2465 * trying to read from the pipe.
2467 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2468 * wrong (but I leave it there in case I am...).
2471 #ifdef USE_TSHARK_SELECT
2473 FD_SET(pipe_input.source, &readfds);
2476 loop_running = TRUE;
2480 while (loop_running)
2482 #ifdef USE_TSHARK_SELECT
2483 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2489 } else if (ret == 1) {
2491 /* Call the real handler */
2492 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2493 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2496 #ifdef USE_TSHARK_SELECT
2501 CATCH(OutOfMemoryError) {
2505 "Sorry, but TShark has to terminate now!\n"
2507 "Some infos / workarounds can be found at:\n"
2508 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2515 /* capture child detected an error */
2517 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2519 cmdarg_err("%s", error_msg);
2520 cmdarg_err_cont("%s", secondary_error_msg);
2524 /* capture child detected an capture filter related error */
2526 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2528 capture_options *capture_opts = cap_session->capture_opts;
2529 dfilter_t *rfcode = NULL;
2530 interface_options interface_opts;
2532 g_assert(i < capture_opts->ifaces->len);
2533 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2535 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2537 "Invalid capture filter \"%s\" for interface '%s'!\n"
2539 "That string looks like a valid display filter; however, it isn't a valid\n"
2540 "capture filter (%s).\n"
2542 "Note that display filters and capture filters don't have the same syntax,\n"
2543 "so you can't use most display filter expressions as capture filters.\n"
2545 "See the User's Guide for a description of the capture filter syntax.",
2546 interface_opts.cfilter, interface_opts.descr, error_message);
2547 dfilter_free(rfcode);
2550 "Invalid capture filter \"%s\" for interface '%s'!\n"
2552 "That string isn't a valid capture filter (%s).\n"
2553 "See the User's Guide for a description of the capture filter syntax.",
2554 interface_opts.cfilter, interface_opts.descr, error_message);
2559 /* capture child tells us we have a new (or the first) capture file */
2561 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2563 capture_options *capture_opts = cap_session->capture_opts;
2564 gboolean is_tempfile;
2567 if (cap_session->state == CAPTURE_PREPARING) {
2568 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2570 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2572 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2574 /* free the old filename */
2575 if (capture_opts->save_file != NULL) {
2577 /* we start a new capture file, close the old one (if we had one before) */
2578 if ( ((capture_file *) cap_session->cf)->state != FILE_CLOSED) {
2579 if ( ((capture_file *) cap_session->cf)->wth != NULL) {
2580 wtap_close(((capture_file *) cap_session->cf)->wth);
2581 ((capture_file *) cap_session->cf)->wth = NULL;
2583 ((capture_file *) cap_session->cf)->state = FILE_CLOSED;
2586 g_free(capture_opts->save_file);
2587 is_tempfile = FALSE;
2589 /* we didn't had a save_file before, must be a tempfile */
2593 /* save the new filename */
2594 capture_opts->save_file = g_strdup(new_file);
2596 /* if we are in real-time mode, open the new file now */
2597 if (do_dissection) {
2598 /* Attempt to open the capture file and set up to read from it. */
2599 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, is_tempfile, &err)) {
2603 /* Don't unlink (delete) the save file - leave it around,
2604 for debugging purposes. */
2605 g_free(capture_opts->save_file);
2606 capture_opts->save_file = NULL;
2611 cap_session->state = CAPTURE_RUNNING;
2617 /* capture child tells us we have new packets to read */
2619 capture_input_new_packets(capture_session *cap_session, int to_read)
2625 capture_file *cf = (capture_file *)cap_session->cf;
2626 gboolean filtering_tap_listeners;
2631 * Prevent a SIGINFO handler from writing to the standard error while
2632 * we're doing so or writing to the standard output; instead, have it
2633 * just set a flag telling us to print that information when we're done.
2636 #endif /* SIGINFO */
2638 /* Do we have any tap listeners with filters? */
2639 filtering_tap_listeners = have_filtering_tap_listeners();
2641 /* Get the union of the flags for all tap listeners. */
2642 tap_flags = union_of_tap_listener_flags();
2644 if (do_dissection) {
2645 gboolean create_proto_tree;
2646 epan_dissect_t *edt;
2648 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2649 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2650 create_proto_tree = TRUE;
2652 create_proto_tree = FALSE;
2654 /* The protocol tree will be "visible", i.e., printed, only if we're
2655 printing packet details, which is true if we're printing stuff
2656 ("print_packet_info" is true) and we're in verbose mode
2657 ("packet_details" is true). */
2658 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2660 while (to_read-- && cf->wth) {
2661 wtap_cleareof(cf->wth);
2662 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2664 /* read from file failed, tell the capture child to stop */
2665 sync_pipe_stop(cap_session);
2666 wtap_close(cf->wth);
2669 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2670 wtap_buf_ptr(cf->wth),
2674 /* packet successfully read and gone through the "Read Filter" */
2679 epan_dissect_free(edt);
2683 * Dumpcap's doing all the work; we're not doing any dissection.
2684 * Count all the packets it wrote.
2686 packet_count += to_read;
2689 if (print_packet_counts) {
2690 /* We're printing packet counts. */
2691 if (packet_count != 0) {
2692 fprintf(stderr, "\r%u ", packet_count);
2693 /* stderr could be line buffered */
2700 * Allow SIGINFO handlers to write.
2705 * If a SIGINFO handler asked us to write out capture counts, do so.
2709 #endif /* SIGINFO */
2715 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2716 /* Report the count only if we aren't printing a packet count
2717 as packets arrive. */
2718 fprintf(stderr, "%u packet%s captured\n", packet_count,
2719 plurality(packet_count, "", "s"));
2722 infoprint = FALSE; /* we just reported it */
2723 #endif /* SIGINFO */
2728 report_counts_siginfo(int signum _U_)
2730 int sav_errno = errno;
2731 /* If we've been told to delay printing, just set a flag asking
2732 that we print counts (if we're supposed to), otherwise print
2733 the count of packets captured (if we're supposed to). */
2740 #endif /* SIGINFO */
2743 /* capture child detected any packet drops? */
2745 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2747 if (print_packet_counts) {
2748 /* We're printing packet counts to stderr.
2749 Send a newline so that we move to the line after the packet count. */
2750 fprintf(stderr, "\n");
2754 /* We're printing packet counts to stderr.
2755 Send a newline so that we move to the line after the packet count. */
2756 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2762 * Capture child closed its side of the pipe, report any error and
2763 * do the required cleanup.
2766 capture_input_closed(capture_session *cap_session, gchar *msg)
2768 capture_file *cf = (capture_file *) cap_session->cf;
2771 fprintf(stderr, "tshark: %s\n", msg);
2775 if (cf != NULL && cf->wth != NULL) {
2776 wtap_close(cf->wth);
2777 if (cf->is_tempfile) {
2778 ws_unlink(cf->filename);
2781 #ifdef USE_BROKEN_G_MAIN_LOOP
2782 /*g_main_loop_quit(loop);*/
2785 loop_running = FALSE;
2794 capture_cleanup(DWORD ctrltype _U_)
2796 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2797 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2798 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2799 like SIGTERM at least when the machine's shutting down.
2801 For now, we handle them all as indications that we should clean up
2802 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2805 We must return TRUE so that no other handler - such as one that would
2806 terminate the process - gets called.
2808 XXX - for some reason, typing ^C to TShark, if you run this in
2809 a Cygwin console window in at least some versions of Cygwin,
2810 causes TShark to terminate immediately; this routine gets
2811 called, but the main loop doesn't get a chance to run and
2812 exit cleanly, at least if this is compiled with Microsoft Visual
2813 C++ (i.e., it's a property of the Cygwin console window or Bash;
2814 it happens if TShark is not built with Cygwin - for all I know,
2815 building it with Cygwin may make the problem go away). */
2817 /* tell the capture child to stop */
2818 sync_pipe_stop(&global_capture_session);
2820 /* don't stop our own loop already here, otherwise status messages and
2821 * cleanup wouldn't be done properly. The child will indicate the stop of
2822 * everything by calling capture_input_closed() later */
2828 capture_cleanup(int signum _U_)
2830 /* tell the capture child to stop */
2831 sync_pipe_stop(&global_capture_session);
2833 /* don't stop our own loop already here, otherwise status messages and
2834 * cleanup wouldn't be done properly. The child will indicate the stop of
2835 * everything by calling capture_input_closed() later */
2838 #endif /* HAVE_LIBPCAP */
2841 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2842 gint64 offset, struct wtap_pkthdr *whdr,
2849 /* The frame number of this packet is one more than the count of
2850 frames in this packet. */
2851 framenum = cf->count + 1;
2853 /* If we're not running a display filter and we're not printing any
2854 packet information, we don't need to do a dissection. This means
2855 that all packets can be marked as 'passed'. */
2858 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2860 /* If we're going to print packet information, or we're going to
2861 run a read filter, or display filter, or we're going to process taps, set up to
2862 do a dissection and do so. */
2864 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2865 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2866 /* Grab any resolved addresses */
2867 host_name_lookup_process();
2869 /* If we're running a read filter, prime the epan_dissect_t with that
2872 epan_dissect_prime_dfilter(edt, cf->rfcode);
2874 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2876 if (ref == &fdlocal) {
2877 ref_frame = fdlocal;
2881 epan_dissect_run(edt, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2883 /* Run the read filter if we have one. */
2885 passed = dfilter_apply_edt(cf->rfcode, edt);
2889 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2890 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2892 /* If we're not doing dissection then there won't be any dependent frames.
2893 * More importantly, edt.pi.dependent_frames won't be initialized because
2894 * epan hasn't been initialized.
2897 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2902 /* if we don't add it to the frame_data_sequence, clean it up right now
2904 frame_data_destroy(&fdlocal);
2908 epan_dissect_reset(edt);
2914 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2915 struct wtap_pkthdr *phdr, Buffer *buf,
2921 /* If we're not running a display filter and we're not printing any
2922 packet information, we don't need to do a dissection. This means
2923 that all packets can be marked as 'passed'. */
2926 /* If we're going to print packet information, or we're going to
2927 run a read filter, or we're going to process taps, set up to
2928 do a dissection and do so. */
2930 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2931 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2932 /* Grab any resolved addresses */
2933 host_name_lookup_process();
2935 /* If we're running a display filter, prime the epan_dissect_t with that
2938 epan_dissect_prime_dfilter(edt, cf->dfcode);
2940 col_custom_prime_edt(edt, &cf->cinfo);
2942 /* We only need the columns if either
2943 1) some tap needs the columns
2945 2) we're printing packet info but we're *not* verbose; in verbose
2946 mode, we print the protocol tree, not the protocol summary.
2948 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2953 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2960 epan_dissect_run_with_taps(edt, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2962 /* Run the read/display filter if we have one. */
2964 passed = dfilter_apply_edt(cf->dfcode, edt);
2968 frame_data_set_after_dissect(fdata, &cum_bytes);
2969 /* Process this packet. */
2970 if (print_packet_info) {
2971 /* We're printing packet information; print the information for
2973 print_packet(cf, edt);
2975 /* The ANSI C standard does not appear to *require* that a line-buffered
2976 stream be flushed to the host environment whenever a newline is
2977 written, it just says that, on such a stream, characters "are
2978 intended to be transmitted to or from the host environment as a
2979 block when a new-line character is encountered".
2981 The Visual C++ 6.0 C implementation doesn't do what is intended;
2982 even if you set a stream to be line-buffered, it still doesn't
2983 flush the buffer at the end of every line.
2985 So, if the "-l" flag was specified, we flush the standard output
2986 at the end of a packet. This will do the right thing if we're
2987 printing packet summary lines, and, as we print the entire protocol
2988 tree for a single packet without waiting for anything to happen,
2989 it should be as good as line-buffered mode if we're printing
2990 protocol trees. (The whole reason for the "-l" flag in either
2991 tcpdump or TShark is to allow the output of a live capture to
2992 be piped to a program or script and to have that script see the
2993 information for the packet as soon as it's printed, rather than
2994 having to wait until a standard I/O buffer fills up. */
2998 if (ferror(stdout)) {
2999 show_print_file_io_error(errno);
3008 epan_dissect_reset(edt);
3010 return passed || fdata->flags.dependent_of_displayed;
3014 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3015 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3018 int snapshot_length;
3022 gchar *err_info = NULL;
3024 char *save_file_string = NULL;
3025 gboolean filtering_tap_listeners;
3027 wtapng_section_t *shb_hdr;
3028 wtapng_iface_descriptions_t *idb_inf;
3031 epan_dissect_t *edt = NULL;
3033 shb_hdr = wtap_file_get_shb_info(cf->wth);
3034 idb_inf = wtap_file_get_idb_info(cf->wth);
3035 #ifdef PCAP_NG_DEFAULT
3036 if (idb_inf->number_of_interfaces > 1) {
3037 linktype = WTAP_ENCAP_PER_PACKET;
3039 linktype = wtap_file_encap(cf->wth);
3042 linktype = wtap_file_encap(cf->wth);
3044 if (save_file != NULL) {
3045 /* Get a string that describes what we're writing to */
3046 save_file_string = output_file_description(save_file);
3048 /* Set up to write to the capture file. */
3049 snapshot_length = wtap_snapshot_length(cf->wth);
3050 if (snapshot_length == 0) {
3051 /* Snapshot length of input file not known. */
3052 snapshot_length = WTAP_MAX_PACKET_SIZE;
3054 /* If we don't have an application name add Tshark */
3055 if (shb_hdr->shb_user_appl == NULL) {
3056 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_svnversion);
3057 shb_hdr->shb_user_appl = appname;
3060 if (linktype != WTAP_ENCAP_PER_PACKET &&
3061 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3062 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3063 snapshot_length, FALSE /* compressed */, &err);
3065 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3066 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3072 /* We couldn't set up to write to the capture file. */
3075 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3076 cmdarg_err("Capture files can't be written in that format.");
3079 case WTAP_ERR_UNSUPPORTED_ENCAP:
3080 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3081 cmdarg_err("The capture file being read can't be written as a "
3082 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3085 case WTAP_ERR_CANT_OPEN:
3086 cmdarg_err("The %s couldn't be created for some "
3087 "unknown reason.", save_file_string);
3090 case WTAP_ERR_SHORT_WRITE:
3091 cmdarg_err("A full header couldn't be written to the %s.",
3096 cmdarg_err("The %s could not be created: %s.", save_file_string,
3097 wtap_strerror(err));
3103 if (print_packet_info) {
3104 if (!write_preamble(cf)) {
3106 show_print_file_io_error(err);
3115 if (pdh && out_file_name_res) {
3116 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3117 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3118 wtap_file_type_subtype_short_string(out_file_type));
3122 /* Do we have any tap listeners with filters? */
3123 filtering_tap_listeners = have_filtering_tap_listeners();
3125 /* Get the union of the flags for all tap listeners. */
3126 tap_flags = union_of_tap_listener_flags();
3128 if (perform_two_pass_analysis) {
3131 /* Allocate a frame_data_sequence for all the frames. */
3132 cf->frames = new_frame_data_sequence();
3134 if (do_dissection) {
3135 gboolean create_proto_tree = FALSE;
3137 /* If we're going to be applying a filter, we'll need to
3138 create a protocol tree against which to apply the filter. */
3140 create_proto_tree = TRUE;
3142 /* We're not going to display the protocol tree on this pass,
3143 so it's not going to be "visible". */
3144 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3147 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3148 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3149 wtap_buf_ptr(cf->wth))) {
3150 /* Stop reading if we have the maximum number of packets;
3151 * When the -c option has not been used, max_packet_count
3152 * starts at 0, which practically means, never stop reading.
3153 * (unless we roll over max_packet_count ?)
3155 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3156 err = 0; /* This is not an error */
3163 epan_dissect_free(edt);
3167 /* Close the sequential I/O side, to free up memory it requires. */
3168 wtap_sequential_close(cf->wth);
3170 /* Allow the protocol dissectors to free up memory that they
3171 * don't need after the sequential run-through of the packets. */
3172 postseq_cleanup_all_protocols();
3176 buffer_init(&buf, 1500);
3178 if (do_dissection) {
3179 gboolean create_proto_tree;
3181 if (cf->dfcode || print_details || filtering_tap_listeners ||
3182 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3183 create_proto_tree = TRUE;
3185 create_proto_tree = FALSE;
3187 /* The protocol tree will be "visible", i.e., printed, only if we're
3188 printing packet details, which is true if we're printing stuff
3189 ("print_packet_info" is true) and we're in verbose mode
3190 ("packet_details" is true). */
3191 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3194 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3195 fdata = frame_data_sequence_find(cf->frames, framenum);
3196 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->phdr,
3197 &buf, &err, &err_info)) {
3198 if (process_packet_second_pass(cf, edt, fdata, &cf->phdr, &buf,
3200 /* Either there's no read filtering or this packet passed the
3201 filter, so, if we're writing to a capture file, write
3204 if (!wtap_dump(pdh, &cf->phdr, buffer_start_ptr(&cf->buf), &err)) {
3205 /* Error writing to a capture file */
3208 case WTAP_ERR_UNSUPPORTED_ENCAP:
3210 * This is a problem with the particular frame we're writing;
3211 * note that, and give the frame number.
3213 * XXX - framenum is not necessarily the frame number in
3214 * the input file if there was a read filter.
3217 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3218 framenum, cf->filename,
3219 wtap_file_type_subtype_short_string(out_file_type));
3223 show_capture_file_io_error(save_file, err, FALSE);
3226 wtap_dump_close(pdh, &err);
3236 epan_dissect_free(edt);
3245 if (do_dissection) {
3246 gboolean create_proto_tree;
3248 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3249 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3250 create_proto_tree = TRUE;
3252 create_proto_tree = FALSE;
3254 /* The protocol tree will be "visible", i.e., printed, only if we're
3255 printing packet details, which is true if we're printing stuff
3256 ("print_packet_info" is true) and we're in verbose mode
3257 ("packet_details" is true). */
3258 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3261 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3264 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3265 wtap_buf_ptr(cf->wth),
3267 /* Either there's no read filtering or this packet passed the
3268 filter, so, if we're writing to a capture file, write
3271 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err)) {
3272 /* Error writing to a capture file */
3275 case WTAP_ERR_UNSUPPORTED_ENCAP:
3277 * This is a problem with the particular frame we're writing;
3278 * note that, and give the frame number.
3281 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3282 framenum, cf->filename,
3283 wtap_file_type_subtype_short_string(out_file_type));
3287 show_capture_file_io_error(save_file, err, FALSE);
3290 wtap_dump_close(pdh, &err);
3296 /* Stop reading if we have the maximum number of packets;
3297 * When the -c option has not been used, max_packet_count
3298 * starts at 0, which practically means, never stop reading.
3299 * (unless we roll over max_packet_count ?)
3301 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3302 err = 0; /* This is not an error */
3308 epan_dissect_free(edt);
3315 * Print a message noting that the read failed somewhere along the line.
3317 * If we're printing packet data, and the standard output and error are
3318 * going to the same place, flush the standard output, so everything
3319 * buffered up is written, and then print a newline to the standard error
3320 * before printing the error message, to separate it from the packet
3321 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3322 * the _fstat() documentation at Microsoft doesn't indicate whether
3323 * st_ino is even supported.)
3326 if (print_packet_info) {
3327 struct stat stat_stdout, stat_stderr;
3329 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
3330 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3331 stat_stdout.st_ino == stat_stderr.st_ino) {
3333 fprintf(stderr, "\n");
3340 case WTAP_ERR_UNSUPPORTED:
3341 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3342 cf->filename, err_info);
3346 case WTAP_ERR_UNSUPPORTED_ENCAP:
3347 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
3348 cf->filename, err_info);
3352 case WTAP_ERR_CANT_READ:
3353 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
3357 case WTAP_ERR_SHORT_READ:
3358 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3362 case WTAP_ERR_BAD_FILE:
3363 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3364 cf->filename, err_info);
3368 case WTAP_ERR_DECOMPRESS:
3369 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3370 "(%s)", cf->filename, err_info);
3374 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3375 cf->filename, wtap_strerror(err));
3378 if (save_file != NULL) {
3379 /* Now close the capture file. */
3380 if (!wtap_dump_close(pdh, &err))
3381 show_capture_file_io_error(save_file, err, TRUE);
3384 if (save_file != NULL) {
3385 /* Now close the capture file. */
3386 if (!wtap_dump_close(pdh, &err))
3387 show_capture_file_io_error(save_file, err, TRUE);
3389 if (print_packet_info) {
3390 if (!write_finale()) {
3392 show_print_file_io_error(err);
3399 wtap_close(cf->wth);
3402 g_free(save_file_string);
3409 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3410 const guchar *pd, guint tap_flags)
3416 /* Count this packet. */
3419 /* If we're not running a display filter and we're not printing any
3420 packet information, we don't need to do a dissection. This means
3421 that all packets can be marked as 'passed'. */
3424 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3426 /* If we're going to print packet information, or we're going to
3427 run a read filter, or we're going to process taps, set up to
3428 do a dissection and do so. */
3430 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3431 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3432 /* Grab any resolved addresses */
3433 host_name_lookup_process();
3435 /* If we're running a filter, prime the epan_dissect_t with that
3438 epan_dissect_prime_dfilter(edt, cf->dfcode);
3440 col_custom_prime_edt(edt, &cf->cinfo);
3442 /* We only need the columns if either
3443 1) some tap needs the columns
3445 2) we're printing packet info but we're *not* verbose; in verbose
3446 mode, we print the protocol tree, not the protocol summary.
3448 3) there is a column mapped as an individual field */
3449 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3454 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3456 if (ref == &fdata) {
3461 epan_dissect_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3463 /* Run the filter if we have it. */
3465 passed = dfilter_apply_edt(cf->dfcode, edt);
3469 frame_data_set_after_dissect(&fdata, &cum_bytes);
3471 /* Process this packet. */
3472 if (print_packet_info) {
3473 /* We're printing packet information; print the information for
3475 print_packet(cf, edt);
3477 /* The ANSI C standard does not appear to *require* that a line-buffered
3478 stream be flushed to the host environment whenever a newline is
3479 written, it just says that, on such a stream, characters "are
3480 intended to be transmitted to or from the host environment as a
3481 block when a new-line character is encountered".
3483 The Visual C++ 6.0 C implementation doesn't do what is intended;
3484 even if you set a stream to be line-buffered, it still doesn't
3485 flush the buffer at the end of every line.
3487 So, if the "-l" flag was specified, we flush the standard output
3488 at the end of a packet. This will do the right thing if we're
3489 printing packet summary lines, and, as we print the entire protocol
3490 tree for a single packet without waiting for anything to happen,
3491 it should be as good as line-buffered mode if we're printing
3492 protocol trees. (The whole reason for the "-l" flag in either
3493 tcpdump or TShark is to allow the output of a live capture to
3494 be piped to a program or script and to have that script see the
3495 information for the packet as soon as it's printed, rather than
3496 having to wait until a standard I/O buffer fills up. */
3500 if (ferror(stdout)) {
3501 show_print_file_io_error(errno);
3506 /* this must be set after print_packet() [bug #8160] */
3507 prev_dis_frame = fdata;
3508 prev_dis = &prev_dis_frame;
3511 prev_cap_frame = fdata;
3512 prev_cap = &prev_cap_frame;
3515 epan_dissect_reset(edt);
3516 frame_data_destroy(&fdata);
3522 write_preamble(capture_file *cf)
3524 switch (output_action) {
3527 return print_preamble(print_stream, cf ? cf->filename : NULL, wireshark_svnversion);
3531 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3533 write_psml_preamble(stdout);
3534 return !ferror(stdout);
3537 write_fields_preamble(output_fields, stdout);
3538 return !ferror(stdout);
3541 g_assert_not_reached();
3547 get_line_buf(size_t len)
3549 static char *line_bufp = NULL;
3550 static size_t line_buf_len = 256;
3551 size_t new_line_buf_len;
3553 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3554 new_line_buf_len *= 2)
3556 if (line_bufp == NULL) {
3557 line_buf_len = new_line_buf_len;
3558 line_bufp = (char *)g_malloc(line_buf_len + 1);
3560 if (new_line_buf_len > line_buf_len) {
3561 line_buf_len = new_line_buf_len;
3562 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3569 put_string(char *dest, const char *str, size_t str_len)
3571 memcpy(dest, str, str_len);
3572 dest[str_len] = '\0';
3576 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3580 for (i = str_len; i < str_with_spaces; i++)
3583 put_string(dest, str, str_len);
3587 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3591 memcpy(dest, str, str_len);
3592 for (i = str_len; i < str_with_spaces; i++)
3595 dest[str_with_spaces] = '\0';
3599 print_columns(capture_file *cf)
3607 line_bufp = get_line_buf(256);
3610 for (i = 0; i < cf->cinfo.num_cols; i++) {
3611 /* Skip columns not marked as visible. */
3612 if (!get_column_visible(i))
3614 switch (cf->cinfo.col_fmt[i]) {
3616 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3619 line_bufp = get_line_buf(buf_offset + column_len);
3620 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3626 case COL_ABS_YMD_TIME: /* XXX - wider */
3627 case COL_ABS_YDOY_TIME: /* XXX - wider */
3629 case COL_UTC_YMD_TIME: /* XXX - wider */
3630 case COL_UTC_YDOY_TIME: /* XXX - wider */
3631 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3632 if (column_len < 10)
3634 line_bufp = get_line_buf(buf_offset + column_len);
3635 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3641 case COL_DEF_DL_SRC:
3642 case COL_RES_DL_SRC:
3643 case COL_UNRES_DL_SRC:
3644 case COL_DEF_NET_SRC:
3645 case COL_RES_NET_SRC:
3646 case COL_UNRES_NET_SRC:
3647 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3648 if (column_len < 12)
3650 line_bufp = get_line_buf(buf_offset + column_len);
3651 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3657 case COL_DEF_DL_DST:
3658 case COL_RES_DL_DST:
3659 case COL_UNRES_DL_DST:
3660 case COL_DEF_NET_DST:
3661 case COL_RES_NET_DST:
3662 case COL_UNRES_NET_DST:
3663 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3664 if (column_len < 12)
3666 line_bufp = get_line_buf(buf_offset + column_len);
3667 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3671 column_len = strlen(cf->cinfo.col_data[i]);
3672 line_bufp = get_line_buf(buf_offset + column_len);
3673 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3676 buf_offset += column_len;
3677 if (i != cf->cinfo.num_cols - 1) {
3679 * This isn't the last column, so we need to print a
3680 * separator between this column and the next.
3682 * If we printed a network source and are printing a
3683 * network destination of the same type next, separate
3684 * them with " -> "; if we printed a network destination
3685 * and are printing a network source of the same type
3686 * next, separate them with " <- "; otherwise separate them
3689 * We add enough space to the buffer for " <- " or " -> ",
3690 * even if we're only adding " ".
3692 line_bufp = get_line_buf(buf_offset + 4);
3693 switch (cf->cinfo.col_fmt[i]) {
3698 switch (cf->cinfo.col_fmt[i + 1]) {
3703 put_string(line_bufp + buf_offset, " -> ", 4);
3708 put_string(line_bufp + buf_offset, " ", 1);
3714 case COL_DEF_DL_SRC:
3715 case COL_RES_DL_SRC:
3716 case COL_UNRES_DL_SRC:
3717 switch (cf->cinfo.col_fmt[i + 1]) {
3719 case COL_DEF_DL_DST:
3720 case COL_RES_DL_DST:
3721 case COL_UNRES_DL_DST:
3722 put_string(line_bufp + buf_offset, " -> ", 4);
3727 put_string(line_bufp + buf_offset, " ", 1);
3733 case COL_DEF_NET_SRC:
3734 case COL_RES_NET_SRC:
3735 case COL_UNRES_NET_SRC:
3736 switch (cf->cinfo.col_fmt[i + 1]) {
3738 case COL_DEF_NET_DST:
3739 case COL_RES_NET_DST:
3740 case COL_UNRES_NET_DST:
3741 put_string(line_bufp + buf_offset, " -> ", 4);
3746 put_string(line_bufp + buf_offset, " ", 1);
3755 switch (cf->cinfo.col_fmt[i + 1]) {
3760 put_string(line_bufp + buf_offset, " <- ", 4);
3765 put_string(line_bufp + buf_offset, " ", 1);
3771 case COL_DEF_DL_DST:
3772 case COL_RES_DL_DST:
3773 case COL_UNRES_DL_DST:
3774 switch (cf->cinfo.col_fmt[i + 1]) {
3776 case COL_DEF_DL_SRC:
3777 case COL_RES_DL_SRC:
3778 case COL_UNRES_DL_SRC:
3779 put_string(line_bufp + buf_offset, " <- ", 4);
3784 put_string(line_bufp + buf_offset, " ", 1);
3790 case COL_DEF_NET_DST:
3791 case COL_RES_NET_DST:
3792 case COL_UNRES_NET_DST:
3793 switch (cf->cinfo.col_fmt[i + 1]) {
3795 case COL_DEF_NET_SRC:
3796 case COL_RES_NET_SRC:
3797 case COL_UNRES_NET_SRC:
3798 put_string(line_bufp + buf_offset, " <- ", 4);
3803 put_string(line_bufp + buf_offset, " ", 1);
3810 put_string(line_bufp + buf_offset, " ", 1);
3816 return print_line(print_stream, 0, line_bufp);
3820 print_packet(capture_file *cf, epan_dissect_t *edt)
3822 print_args_t print_args;
3824 if (print_summary || output_fields_has_cols(output_fields)) {
3825 /* Just fill in the columns. */
3826 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3828 if (print_summary) {
3829 /* Now print them. */
3830 switch (output_action) {
3833 if (!print_columns(cf))
3838 proto_tree_write_psml(edt, stdout);
3839 return !ferror(stdout);
3840 case WRITE_FIELDS: /*No non-verbose "fields" format */
3841 g_assert_not_reached();
3846 if (print_details) {
3847 /* Print the information in the protocol tree. */
3848 switch (output_action) {
3851 /* Only initialize the fields that are actually used in proto_tree_print.
3852 * This is particularly important for .range, as that's heap memory which
3853 * we would otherwise have to g_free().
3854 print_args.to_file = TRUE;
3855 print_args.format = print_format;
3856 print_args.print_summary = print_summary;
3857 print_args.print_formfeed = FALSE;
3858 packet_range_init(&print_args.range, &cfile);
3860 print_args.print_hex = print_hex;
3861 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3863 if (!proto_tree_print(&print_args, edt, print_stream))
3866 if (!print_line(print_stream, 0, separator))
3872 proto_tree_write_pdml(edt, stdout);
3874 return !ferror(stdout);
3876 proto_tree_write_fields(output_fields, edt, &cf->cinfo, stdout);
3878 return !ferror(stdout);
3882 if (print_summary || print_details) {
3883 if (!print_line(print_stream, 0, ""))
3886 if (!print_hex_data(print_stream, edt))
3888 if (!print_line(print_stream, 0, separator))
3897 switch (output_action) {
3900 return print_finale(print_stream);
3904 write_pdml_finale(stdout);
3906 write_psml_finale(stdout);
3907 return !ferror(stdout);
3910 write_fields_finale(output_fields, stdout);
3911 return !ferror(stdout);
3914 g_assert_not_reached();
3920 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3924 char err_msg[2048+1];
3926 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3930 /* The open succeeded. Fill in the information for this file. */
3932 /* Create new epan session for dissection. */
3933 epan_free(cf->epan);
3934 cf->epan = tshark_epan_new(cf);
3937 cf->f_datalen = 0; /* not used, but set it anyway */
3939 /* Set the file name because we need it to set the follow stream filter.
3940 XXX - is that still true? We need it for other reasons, though,
3942 cf->filename = g_strdup(fname);
3944 /* Indicate whether it's a permanent or temporary file. */
3945 cf->is_tempfile = is_tempfile;
3947 /* No user changes yet. */
3948 cf->unsaved_changes = FALSE;
3950 cf->cd_t = wtap_file_type_subtype(cf->wth);
3952 cf->drops_known = FALSE;
3954 cf->snap = wtap_snapshot_length(cf->wth);
3955 if (cf->snap == 0) {
3956 /* Snapshot length not known. */
3957 cf->has_snap = FALSE;
3958 cf->snap = WTAP_MAX_PACKET_SIZE;
3960 cf->has_snap = TRUE;
3961 nstime_set_zero(&cf->elapsed_time);
3966 cf->state = FILE_READ_IN_PROGRESS;
3968 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3969 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3974 g_snprintf(err_msg, sizeof err_msg,
3975 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3976 cmdarg_err("%s", err_msg);
3981 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3983 char *save_file_string;
3985 save_file_string = output_file_description(fname);
3990 cmdarg_err("Not all the packets could be written to the %s because there is "
3991 "no space left on the file system.",
3997 cmdarg_err("Not all the packets could be written to the %s because you are "
3998 "too close to, or over your disk quota.",
4003 case WTAP_ERR_CANT_CLOSE:
4004 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4008 case WTAP_ERR_SHORT_WRITE:
4009 cmdarg_err("Not all the packets could be written to the %s.",
4015 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4016 wtap_strerror(err));
4018 cmdarg_err("An error occurred while writing to the %s: %s.",
4019 save_file_string, wtap_strerror(err));
4023 g_free(save_file_string);
4027 show_print_file_io_error(int err)
4032 cmdarg_err("Not all the packets could be printed because there is "
4033 "no space left on the file system.");
4038 cmdarg_err("Not all the packets could be printed because you are "
4039 "too close to, or over your disk quota.");
4044 cmdarg_err("An error occurred while printing packets: %s.",
4051 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4055 static char errmsg_errno[1024+1];
4058 /* Wiretap error. */
4061 case WTAP_ERR_NOT_REGULAR_FILE:
4062 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4065 case WTAP_ERR_RANDOM_OPEN_PIPE:
4066 /* Seen only when opening a capture file for reading. */
4067 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4070 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4071 /* Seen only when opening a capture file for reading. */
4072 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4075 case WTAP_ERR_UNSUPPORTED:
4076 /* Seen only when opening a capture file for reading. */
4077 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4078 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
4081 errmsg = errmsg_errno;
4084 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4085 /* Seen only when opening a capture file for writing. */
4086 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4087 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4088 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4089 errmsg = errmsg_errno;
4092 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4093 /* Seen only when opening a capture file for writing. */
4094 errmsg = "TShark doesn't support writing capture files in that format.";
4097 case WTAP_ERR_UNSUPPORTED_ENCAP:
4099 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4100 "TShark can't save this capture as a \"%s\" file.",
4101 wtap_file_type_subtype_short_string(file_type));
4103 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4104 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
4108 errmsg = errmsg_errno;
4111 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4113 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4114 "TShark can't save this capture as a \"%s\" file.",
4115 wtap_file_type_subtype_short_string(file_type));
4116 errmsg = errmsg_errno;
4118 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4121 case WTAP_ERR_BAD_FILE:
4122 /* Seen only when opening a capture file for reading. */
4123 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4124 "The file \"%%s\" appears to be damaged or corrupt.\n"
4127 errmsg = errmsg_errno;
4130 case WTAP_ERR_CANT_OPEN:
4132 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4134 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4137 case WTAP_ERR_SHORT_READ:
4138 errmsg = "The file \"%s\" appears to have been cut short"
4139 " in the middle of a packet or other data.";
4142 case WTAP_ERR_SHORT_WRITE:
4143 errmsg = "A full header couldn't be written to the file \"%s\".";
4146 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4147 errmsg = "This file type cannot be written as a compressed file.";
4150 case WTAP_ERR_DECOMPRESS:
4151 /* Seen only when opening a capture file for reading. */
4152 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4153 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4156 errmsg = errmsg_errno;
4160 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4161 "The file \"%%s\" could not be %s: %s.",
4162 for_writing ? "created" : "opened",
4163 wtap_strerror(err));
4164 errmsg = errmsg_errno;
4168 errmsg = file_open_error_message(err, for_writing);
4173 * Open/create errors are reported with an console message in TShark.
4176 open_failure_message(const char *filename, int err, gboolean for_writing)
4178 fprintf(stderr, "tshark: ");
4179 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4180 fprintf(stderr, "\n");
4185 * General errors are reported with an console message in TShark.
4188 failure_message(const char *msg_format, va_list ap)
4190 fprintf(stderr, "tshark: ");
4191 vfprintf(stderr, msg_format, ap);
4192 fprintf(stderr, "\n");
4196 * Read errors are reported with an console message in TShark.
4199 read_failure_message(const char *filename, int err)
4201 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4202 filename, g_strerror(err));
4206 * Write errors are reported with an console message in TShark.
4209 write_failure_message(const char *filename, int err)
4211 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4212 filename, g_strerror(err));
4216 * Report an error in command-line arguments.
4219 cmdarg_err(const char *fmt, ...)
4224 failure_message(fmt, ap);
4229 * Report additional information for an error in command-line arguments.
4232 cmdarg_err_cont(const char *fmt, ...)
4237 vfprintf(stderr, fmt, ap);
4238 fprintf(stderr, "\n");
4244 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4249 * indent-tabs-mode: nil
4252 * vi: set shiftwidth=2 tabstop=8 expandtab:
4253 * :indentSize=2:tabSize=8:noTabs=true: