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 (global_capture_opts.saving_to_file) {
1787 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1789 /* When capturing, we only support writing pcap or pcap-ng format. */
1790 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1791 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1792 cmdarg_err("Live captures can only be saved in libpcap format.");
1795 if (global_capture_opts.capture_comment &&
1796 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1797 cmdarg_err("A capture comment can only be written to a pcapng file.");
1800 if (global_capture_opts.multi_files_on) {
1801 /* Multiple-file mode doesn't work under certain conditions:
1802 a) it doesn't work if you're writing to the standard output;
1803 b) it doesn't work if you're writing to a pipe;
1805 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1806 cmdarg_err("Multiple capture files requested, but "
1807 "the capture is being written to the standard output.");
1810 if (global_capture_opts.output_to_pipe) {
1811 cmdarg_err("Multiple capture files requested, but "
1812 "the capture file is a pipe.");
1815 if (!global_capture_opts.has_autostop_filesize &&
1816 !global_capture_opts.has_file_duration) {
1817 cmdarg_err("Multiple capture files requested, but "
1818 "no maximum capture file size or duration was specified.");
1822 /* Currently, we don't support read or display filters when capturing
1823 and saving the packets. */
1824 if (rfilter != NULL) {
1825 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1828 if (dfilter != NULL) {
1829 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1833 /* They didn't specify a "-w" flag, so we won't be saving to a
1834 capture file. Check for options that only make sense if
1835 we're saving to a file. */
1836 if (global_capture_opts.has_autostop_filesize) {
1837 cmdarg_err("Maximum capture file size specified, but "
1838 "capture isn't being saved to a file.");
1841 if (global_capture_opts.multi_files_on) {
1842 cmdarg_err("Multiple capture files requested, but "
1843 "the capture isn't being saved to a file.");
1846 if (global_capture_opts.capture_comment) {
1847 cmdarg_err("A capture comment was specified, but "
1848 "the capture isn't being saved to a file.");
1857 /* Start windows sockets */
1858 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1861 /* Notify all registered modules that have had any of their preferences
1862 changed either from one of the preferences file or from the command
1863 line that their preferences have changed. */
1866 /* At this point MATE will have registered its field array so we can
1867 have a tap filter with one of MATE's late-registered fields as part
1868 of the filter. We can now process all the "-z" arguments. */
1869 start_requested_stats();
1872 /* We currently don't support taps, or printing dissected packets,
1873 if we're writing to a pipe. */
1874 if (global_capture_opts.saving_to_file &&
1875 global_capture_opts.output_to_pipe) {
1876 if (tap_listeners_require_dissection()) {
1877 cmdarg_err("Taps aren't supported when saving to a pipe.");
1880 if (print_packet_info) {
1881 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1887 /* disabled protocols as per configuration file */
1888 if (gdp_path == NULL && dp_path == NULL) {
1889 set_disabled_protos_list();
1892 /* Build the column format array */
1893 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1896 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1897 capture_opts_trim_ring_num_files(&global_capture_opts);
1900 if (rfilter != NULL) {
1901 if (!dfilter_compile(rfilter, &rfcode)) {
1902 cmdarg_err("%s", dfilter_error_msg);
1904 #ifdef HAVE_PCAP_OPEN_DEAD
1908 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1910 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1912 " Note: That read filter code looks like a valid capture filter;\n"
1913 " maybe you mixed them up?");
1922 cfile.rfcode = rfcode;
1924 if (dfilter != NULL) {
1925 if (!dfilter_compile(dfilter, &dfcode)) {
1926 cmdarg_err("%s", dfilter_error_msg);
1928 #ifdef HAVE_PCAP_OPEN_DEAD
1932 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1934 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1936 " Note: That display filter code looks like a valid capture filter;\n"
1937 " maybe you mixed them up?");
1946 cfile.dfcode = dfcode;
1948 if (print_packet_info) {
1949 /* If we're printing as text or PostScript, we have
1950 to create a print stream. */
1951 if (output_action == WRITE_TEXT) {
1952 switch (print_format) {
1955 print_stream = print_stream_text_stdio_new(stdout);
1959 print_stream = print_stream_ps_stdio_new(stdout);
1963 g_assert_not_reached();
1968 /* We have to dissect each packet if:
1970 we're printing information about each packet;
1972 we're using a read filter on the packets;
1974 we're using a display filter on the packets;
1976 we're using any taps that need dissection. */
1977 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
1981 * We're reading a capture file.
1985 * Immediately relinquish any special privileges we have; we must not
1986 * be allowed to read any capture files the user running TShark
1989 relinquish_special_privs_perm();
1990 print_current_user();
1992 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1997 /* Set timestamp precision; there should arguably be a command-line
1998 option to let the user set this. */
1999 switch(wtap_file_tsprecision(cfile.wth)) {
2000 case(WTAP_FILE_TSPREC_SEC):
2001 timestamp_set_precision(TS_PREC_AUTO_SEC);
2003 case(WTAP_FILE_TSPREC_DSEC):
2004 timestamp_set_precision(TS_PREC_AUTO_DSEC);
2006 case(WTAP_FILE_TSPREC_CSEC):
2007 timestamp_set_precision(TS_PREC_AUTO_CSEC);
2009 case(WTAP_FILE_TSPREC_MSEC):
2010 timestamp_set_precision(TS_PREC_AUTO_MSEC);
2012 case(WTAP_FILE_TSPREC_USEC):
2013 timestamp_set_precision(TS_PREC_AUTO_USEC);
2015 case(WTAP_FILE_TSPREC_NSEC):
2016 timestamp_set_precision(TS_PREC_AUTO_NSEC);
2019 g_assert_not_reached();
2022 /* Process the packets in the file */
2025 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2026 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2027 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2029 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
2032 CATCH(OutOfMemoryError) {
2036 "Sorry, but TShark has to terminate now!\n"
2038 "Some infos / workarounds can be found at:\n"
2039 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2044 /* We still dump out the results of taps, etc., as we might have
2045 read some packets; however, we exit with an error status. */
2049 /* No capture file specified, so we're supposed to do a live capture
2050 or get a list of link-layer types for a live capture device;
2051 do we have support for live captures? */
2053 /* if no interface was specified, pick a default */
2054 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2055 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2056 if (exit_status != 0)
2059 /* if requested, list the link layer types and exit */
2060 if (list_link_layer_types) {
2063 /* Get the list of link-layer types for the capture devices. */
2064 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2065 interface_options interface_opts;
2066 if_capabilities_t *caps;
2068 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2069 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2071 cmdarg_err("%s", err_str);
2075 if (caps->data_link_types == NULL) {
2076 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2079 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2080 free_if_capabilities(caps);
2086 * If the standard error isn't a terminal, don't print packet counts,
2087 * as they won't show up on the user's terminal and they'll get in
2088 * the way of error messages in the file (to which we assume the
2089 * standard error was redirected; if it's redirected to the null
2090 * device, there's no point in printing packet counts anyway).
2092 * Otherwise, if we're printing packet information and the standard
2093 * output is a terminal (which we assume means the standard output and
2094 * error are going to the same terminal), don't print packet counts,
2095 * as they'll get in the way of the packet information.
2097 * Otherwise, if the user specified -q, don't print packet counts.
2099 * Otherwise, print packet counts.
2101 * XXX - what if the user wants to do a live capture, doesn't want
2102 * to save it to a file, doesn't want information printed for each
2103 * packet, does want some "-z" statistic, and wants packet counts
2104 * so they know whether they're seeing any packets? -q will
2105 * suppress the information printed for each packet, but it'll
2106 * also suppress the packet counts.
2108 if (!isatty(fileno(stderr)))
2109 print_packet_counts = FALSE;
2110 else if (print_packet_info && isatty(fileno(stdout)))
2111 print_packet_counts = FALSE;
2113 print_packet_counts = FALSE;
2115 print_packet_counts = TRUE;
2117 if (print_packet_info) {
2118 if (!write_preamble(NULL)) {
2119 show_print_file_io_error(errno);
2124 /* For now, assume libpcap gives microsecond precision. */
2125 timestamp_set_precision(TS_PREC_AUTO_USEC);
2128 * XXX - this returns FALSE if an error occurred, but it also
2129 * returns FALSE if the capture stops because a time limit
2130 * was reached (and possibly other limits), so we can't assume
2131 * it means an error.
2133 * The capture code is a bit twisty, so it doesn't appear to
2134 * be an easy fix. We just ignore the return value for now.
2135 * Instead, pass on the exit status from the capture child.
2138 exit_status = global_capture_session.fork_child_status;
2140 if (print_packet_info) {
2141 if (!write_finale()) {
2143 show_print_file_io_error(err);
2147 /* No - complain. */
2148 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2155 if (cfile.frames != NULL) {
2156 free_frame_data_sequence(cfile.frames);
2157 cfile.frames = NULL;
2160 draw_tap_listeners(TRUE);
2161 funnel_dump_all_text_windows();
2162 epan_free(cfile.epan);
2165 output_fields_free(output_fields);
2166 output_fields = NULL;
2171 /*#define USE_BROKEN_G_MAIN_LOOP*/
2173 #ifdef USE_BROKEN_G_MAIN_LOOP
2176 gboolean loop_running = FALSE;
2178 guint32 packet_count = 0;
2181 /* XXX - move to the right position / file */
2182 /* read from a pipe (callback) */
2183 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
2185 typedef struct pipe_input_tag {
2189 pipe_input_cb_t input_cb;
2190 guint pipe_input_id;
2192 GMutex *callback_running;
2196 static pipe_input_t pipe_input;
2199 /* The timer has expired, see if there's stuff to read from the pipe,
2200 if so, do the callback */
2202 pipe_timer_cb(gpointer data)
2208 pipe_input_t *pipe_input_p = data;
2209 gint iterations = 0;
2211 g_mutex_lock (pipe_input_p->callback_running);
2213 /* try to read data from the pipe only 5 times, to avoid blocking */
2214 while(iterations < 5) {
2215 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2217 /* Oddly enough although Named pipes don't work on win9x,
2218 PeekNamedPipe does !!! */
2219 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2220 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2222 /* Get the child process exit status */
2223 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2226 /* If the Peek returned an error, or there are bytes to be read
2227 or the childwatcher thread has terminated then call the normal
2229 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2231 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2233 /* And call the real handler */
2234 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2235 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2236 /* pipe closed, return false so that the timer is stopped */
2237 g_mutex_unlock (pipe_input_p->callback_running);
2242 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2243 /* No data, stop now */
2250 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2252 g_mutex_unlock (pipe_input_p->callback_running);
2254 /* we didn't stopped the timer, so let it run */
2261 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2264 pipe_input.source = source;
2265 pipe_input.child_process = child_process;
2266 pipe_input.user_data = user_data;
2267 pipe_input.input_cb = input_cb;
2270 #if GLIB_CHECK_VERSION(2,31,0)
2271 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2272 g_mutex_init(pipe_input.callback_running);
2274 pipe_input.callback_running = g_mutex_new();
2276 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2277 do this but that doesn't cover all win32 platforms. GTK can do
2278 this but doesn't seem to work over processes. Attempt to do
2279 something similar here, start a timer and check for data on every
2281 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2282 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2286 static const nstime_t *
2287 tshark_get_frame_ts(void *data, guint32 frame_num)
2289 capture_file *cf = (capture_file *) data;
2291 if (ref && ref->num == frame_num)
2292 return &ref->abs_ts;
2294 if (prev_dis && prev_dis->num == frame_num)
2295 return &prev_dis->abs_ts;
2297 if (prev_cap && prev_cap->num == frame_num)
2298 return &prev_cap->abs_ts;
2301 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2303 return (fd) ? &fd->abs_ts : NULL;
2310 tshark_epan_new(capture_file *cf)
2312 epan_t *epan = epan_new();
2315 epan->get_frame_ts = tshark_get_frame_ts;
2316 epan->get_interface_name = cap_file_get_interface_name;
2317 epan->get_user_comment = NULL;
2328 GString *str = g_string_new("");
2329 #ifdef USE_TSHARK_SELECT
2333 struct sigaction action, oldaction;
2337 * XXX - dropping privileges is still required, until code cleanup is done
2339 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2340 * when it's done, we don't need special privileges to run tshark at all,
2341 * therefore we don't need to drop these privileges
2342 * The only thing we might want to keep is a warning if tshark is run as root,
2343 * as it's no longer necessary and potentially dangerous.
2345 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2346 * We've opened the capture device, so we shouldn't need any special
2347 * privileges any more; relinquish those privileges.
2349 * XXX - if we have saved set-user-ID support, we should give up those
2350 * privileges immediately, and then reclaim them long enough to get
2351 * a list of network interfaces and to open one, and then give them
2352 * up again, so that stuff we do while processing the argument list,
2353 * reading the user's preferences, loading and starting plugins
2354 * (especially *user* plugins), etc. is done with the user's privileges,
2355 * not special privileges.
2357 relinquish_special_privs_perm();
2358 print_current_user();
2360 /* Create new dissection section. */
2361 epan_free(cfile.epan);
2362 cfile.epan = tshark_epan_new(&cfile);
2365 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2366 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2368 /* Catch SIGINT and SIGTERM and, if we get either of them,
2369 clean up and exit. If SIGHUP isn't being ignored, catch
2370 it too and, if we get it, clean up and exit.
2372 We restart any read that was in progress, so that it doesn't
2373 disrupt reading from the sync pipe. The signal handler tells
2374 the capture child to finish; it will report that it finished,
2375 or will exit abnormally, so we'll stop reading from the sync
2376 pipe, pick up the exit status, and quit. */
2377 memset(&action, 0, sizeof(action));
2378 action.sa_handler = capture_cleanup;
2379 action.sa_flags = SA_RESTART;
2380 sigemptyset(&action.sa_mask);
2381 sigaction(SIGTERM, &action, NULL);
2382 sigaction(SIGINT, &action, NULL);
2383 sigaction(SIGHUP, NULL, &oldaction);
2384 if (oldaction.sa_handler == SIG_DFL)
2385 sigaction(SIGHUP, &action, NULL);
2388 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2389 quiet mode, report the number of packets we've captured.
2391 Again, restart any read that was in progress, so that it doesn't
2392 disrupt reading from the sync pipe. */
2393 action.sa_handler = report_counts_siginfo;
2394 action.sa_flags = SA_RESTART;
2395 sigemptyset(&action.sa_mask);
2396 sigaction(SIGINFO, &action, NULL);
2397 #endif /* SIGINFO */
2400 global_capture_session.state = CAPTURE_PREPARING;
2402 /* Let the user know which interfaces were chosen. */
2403 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2404 interface_options interface_opts;
2406 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2407 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2408 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2409 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2412 if (global_capture_opts.ifaces->len < 2)
2414 if (global_capture_opts.ifaces->len < 4)
2417 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2418 interface_options interface_opts;
2420 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2422 if (global_capture_opts.ifaces->len > 2) {
2423 g_string_append_printf(str, ",");
2425 g_string_append_printf(str, " ");
2426 if (i == global_capture_opts.ifaces->len - 1) {
2427 g_string_append_printf(str, "and ");
2430 g_string_append_printf(str, "'%s'", interface_opts.descr);
2433 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2435 if (really_quiet == FALSE)
2436 fprintf(stderr, "Capturing on %s\n", str->str);
2438 g_string_free(str, TRUE);
2440 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2445 /* the actual capture loop
2447 * XXX - glib doesn't seem to provide any event based loop handling.
2449 * XXX - for whatever reason,
2450 * calling g_main_loop_new() ends up in 100% cpu load.
2452 * But that doesn't matter: in UNIX we can use select() to find an input
2453 * source with something to do.
2455 * But that doesn't matter because we're in a CLI (that doesn't need to
2456 * update a GUI or something at the same time) so it's OK if we block
2457 * trying to read from the pipe.
2459 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2460 * wrong (but I leave it there in case I am...).
2463 #ifdef USE_TSHARK_SELECT
2465 FD_SET(pipe_input.source, &readfds);
2468 loop_running = TRUE;
2472 while (loop_running)
2474 #ifdef USE_TSHARK_SELECT
2475 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2481 } else if (ret == 1) {
2483 /* Call the real handler */
2484 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2485 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2488 #ifdef USE_TSHARK_SELECT
2493 CATCH(OutOfMemoryError) {
2497 "Sorry, but TShark has to terminate now!\n"
2499 "Some infos / workarounds can be found at:\n"
2500 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2507 /* capture child detected an error */
2509 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2511 cmdarg_err("%s", error_msg);
2512 cmdarg_err_cont("%s", secondary_error_msg);
2516 /* capture child detected an capture filter related error */
2518 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2520 capture_options *capture_opts = cap_session->capture_opts;
2521 dfilter_t *rfcode = NULL;
2522 interface_options interface_opts;
2524 g_assert(i < capture_opts->ifaces->len);
2525 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2527 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2529 "Invalid capture filter \"%s\" for interface '%s'!\n"
2531 "That string looks like a valid display filter; however, it isn't a valid\n"
2532 "capture filter (%s).\n"
2534 "Note that display filters and capture filters don't have the same syntax,\n"
2535 "so you can't use most display filter expressions as capture filters.\n"
2537 "See the User's Guide for a description of the capture filter syntax.",
2538 interface_opts.cfilter, interface_opts.descr, error_message);
2539 dfilter_free(rfcode);
2542 "Invalid capture filter \"%s\" for interface '%s'!\n"
2544 "That string isn't a valid capture filter (%s).\n"
2545 "See the User's Guide for a description of the capture filter syntax.",
2546 interface_opts.cfilter, interface_opts.descr, error_message);
2551 /* capture child tells us we have a new (or the first) capture file */
2553 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2555 capture_options *capture_opts = cap_session->capture_opts;
2556 gboolean is_tempfile;
2559 if (cap_session->state == CAPTURE_PREPARING) {
2560 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2562 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2564 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2566 /* free the old filename */
2567 if (capture_opts->save_file != NULL) {
2569 /* we start a new capture file, close the old one (if we had one before) */
2570 if ( ((capture_file *) cap_session->cf)->state != FILE_CLOSED) {
2571 if ( ((capture_file *) cap_session->cf)->wth != NULL) {
2572 wtap_close(((capture_file *) cap_session->cf)->wth);
2573 ((capture_file *) cap_session->cf)->wth = NULL;
2575 ((capture_file *) cap_session->cf)->state = FILE_CLOSED;
2578 g_free(capture_opts->save_file);
2579 is_tempfile = FALSE;
2581 /* we didn't had a save_file before, must be a tempfile */
2585 /* save the new filename */
2586 capture_opts->save_file = g_strdup(new_file);
2588 /* if we are in real-time mode, open the new file now */
2589 if (do_dissection) {
2590 /* Attempt to open the capture file and set up to read from it. */
2591 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, is_tempfile, &err)) {
2595 /* Don't unlink (delete) the save file - leave it around,
2596 for debugging purposes. */
2597 g_free(capture_opts->save_file);
2598 capture_opts->save_file = NULL;
2603 cap_session->state = CAPTURE_RUNNING;
2609 /* capture child tells us we have new packets to read */
2611 capture_input_new_packets(capture_session *cap_session, int to_read)
2617 capture_file *cf = (capture_file *)cap_session->cf;
2618 gboolean filtering_tap_listeners;
2623 * Prevent a SIGINFO handler from writing to the standard error while
2624 * we're doing so or writing to the standard output; instead, have it
2625 * just set a flag telling us to print that information when we're done.
2628 #endif /* SIGINFO */
2630 /* Do we have any tap listeners with filters? */
2631 filtering_tap_listeners = have_filtering_tap_listeners();
2633 /* Get the union of the flags for all tap listeners. */
2634 tap_flags = union_of_tap_listener_flags();
2636 if (do_dissection) {
2637 gboolean create_proto_tree;
2638 epan_dissect_t *edt;
2640 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2641 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2642 create_proto_tree = TRUE;
2644 create_proto_tree = FALSE;
2646 /* The protocol tree will be "visible", i.e., printed, only if we're
2647 printing packet details, which is true if we're printing stuff
2648 ("print_packet_info" is true) and we're in verbose mode
2649 ("packet_details" is true). */
2650 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2652 while (to_read-- && cf->wth) {
2653 wtap_cleareof(cf->wth);
2654 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2656 /* read from file failed, tell the capture child to stop */
2657 sync_pipe_stop(cap_session);
2658 wtap_close(cf->wth);
2661 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2662 wtap_buf_ptr(cf->wth),
2666 /* packet successfully read and gone through the "Read Filter" */
2671 epan_dissect_free(edt);
2675 * Dumpcap's doing all the work; we're not doing any dissection.
2676 * Count all the packets it wrote.
2678 packet_count += to_read;
2681 if (print_packet_counts) {
2682 /* We're printing packet counts. */
2683 if (packet_count != 0) {
2684 fprintf(stderr, "\r%u ", packet_count);
2685 /* stderr could be line buffered */
2692 * Allow SIGINFO handlers to write.
2697 * If a SIGINFO handler asked us to write out capture counts, do so.
2701 #endif /* SIGINFO */
2707 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2708 /* Report the count only if we aren't printing a packet count
2709 as packets arrive. */
2710 fprintf(stderr, "%u packet%s captured\n", packet_count,
2711 plurality(packet_count, "", "s"));
2714 infoprint = FALSE; /* we just reported it */
2715 #endif /* SIGINFO */
2720 report_counts_siginfo(int signum _U_)
2722 int sav_errno = errno;
2723 /* If we've been told to delay printing, just set a flag asking
2724 that we print counts (if we're supposed to), otherwise print
2725 the count of packets captured (if we're supposed to). */
2732 #endif /* SIGINFO */
2735 /* capture child detected any packet drops? */
2737 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2739 if (print_packet_counts) {
2740 /* We're printing packet counts to stderr.
2741 Send a newline so that we move to the line after the packet count. */
2742 fprintf(stderr, "\n");
2746 /* We're printing packet counts to stderr.
2747 Send a newline so that we move to the line after the packet count. */
2748 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2754 * Capture child closed its side of the pipe, report any error and
2755 * do the required cleanup.
2758 capture_input_closed(capture_session *cap_session, gchar *msg)
2760 capture_file *cf = (capture_file *) cap_session->cf;
2763 fprintf(stderr, "tshark: %s\n", msg);
2767 if (cf != NULL && cf->wth != NULL) {
2768 wtap_close(cf->wth);
2769 if (cf->is_tempfile) {
2770 ws_unlink(cf->filename);
2773 #ifdef USE_BROKEN_G_MAIN_LOOP
2774 /*g_main_loop_quit(loop);*/
2777 loop_running = FALSE;
2786 capture_cleanup(DWORD ctrltype _U_)
2788 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2789 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2790 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2791 like SIGTERM at least when the machine's shutting down.
2793 For now, we handle them all as indications that we should clean up
2794 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2797 We must return TRUE so that no other handler - such as one that would
2798 terminate the process - gets called.
2800 XXX - for some reason, typing ^C to TShark, if you run this in
2801 a Cygwin console window in at least some versions of Cygwin,
2802 causes TShark to terminate immediately; this routine gets
2803 called, but the main loop doesn't get a chance to run and
2804 exit cleanly, at least if this is compiled with Microsoft Visual
2805 C++ (i.e., it's a property of the Cygwin console window or Bash;
2806 it happens if TShark is not built with Cygwin - for all I know,
2807 building it with Cygwin may make the problem go away). */
2809 /* tell the capture child to stop */
2810 sync_pipe_stop(&global_capture_session);
2812 /* don't stop our own loop already here, otherwise status messages and
2813 * cleanup wouldn't be done properly. The child will indicate the stop of
2814 * everything by calling capture_input_closed() later */
2820 capture_cleanup(int signum _U_)
2822 /* tell the capture child to stop */
2823 sync_pipe_stop(&global_capture_session);
2825 /* don't stop our own loop already here, otherwise status messages and
2826 * cleanup wouldn't be done properly. The child will indicate the stop of
2827 * everything by calling capture_input_closed() later */
2830 #endif /* HAVE_LIBPCAP */
2833 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2834 gint64 offset, struct wtap_pkthdr *whdr,
2841 /* The frame number of this packet is one more than the count of
2842 frames in this packet. */
2843 framenum = cf->count + 1;
2845 /* If we're not running a display filter and we're not printing any
2846 packet information, we don't need to do a dissection. This means
2847 that all packets can be marked as 'passed'. */
2850 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2852 /* If we're going to print packet information, or we're going to
2853 run a read filter, or display filter, or we're going to process taps, set up to
2854 do a dissection and do so. */
2856 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2857 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2858 /* Grab any resolved addresses */
2859 host_name_lookup_process();
2861 /* If we're running a read filter, prime the epan_dissect_t with that
2864 epan_dissect_prime_dfilter(edt, cf->rfcode);
2866 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2868 if (ref == &fdlocal) {
2869 ref_frame = fdlocal;
2873 epan_dissect_run(edt, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2875 /* Run the read filter if we have one. */
2877 passed = dfilter_apply_edt(cf->rfcode, edt);
2881 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2882 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2884 /* If we're not doing dissection then there won't be any dependent frames.
2885 * More importantly, edt.pi.dependent_frames won't be initialized because
2886 * epan hasn't been initialized.
2889 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2894 /* if we don't add it to the frame_data_sequence, clean it up right now
2896 frame_data_destroy(&fdlocal);
2900 epan_dissect_reset(edt);
2906 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2907 struct wtap_pkthdr *phdr, Buffer *buf,
2913 /* If we're not running a display filter and we're not printing any
2914 packet information, we don't need to do a dissection. This means
2915 that all packets can be marked as 'passed'. */
2918 /* If we're going to print packet information, or we're going to
2919 run a read filter, or we're going to process taps, set up to
2920 do a dissection and do so. */
2922 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2923 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2924 /* Grab any resolved addresses */
2925 host_name_lookup_process();
2927 /* If we're running a display filter, prime the epan_dissect_t with that
2930 epan_dissect_prime_dfilter(edt, cf->dfcode);
2932 col_custom_prime_edt(edt, &cf->cinfo);
2934 /* We only need the columns if either
2935 1) some tap needs the columns
2937 2) we're printing packet info but we're *not* verbose; in verbose
2938 mode, we print the protocol tree, not the protocol summary.
2940 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2945 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2952 epan_dissect_run_with_taps(edt, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2954 /* Run the read/display filter if we have one. */
2956 passed = dfilter_apply_edt(cf->dfcode, edt);
2960 frame_data_set_after_dissect(fdata, &cum_bytes);
2961 /* Process this packet. */
2962 if (print_packet_info) {
2963 /* We're printing packet information; print the information for
2965 print_packet(cf, edt);
2967 /* The ANSI C standard does not appear to *require* that a line-buffered
2968 stream be flushed to the host environment whenever a newline is
2969 written, it just says that, on such a stream, characters "are
2970 intended to be transmitted to or from the host environment as a
2971 block when a new-line character is encountered".
2973 The Visual C++ 6.0 C implementation doesn't do what is intended;
2974 even if you set a stream to be line-buffered, it still doesn't
2975 flush the buffer at the end of every line.
2977 So, if the "-l" flag was specified, we flush the standard output
2978 at the end of a packet. This will do the right thing if we're
2979 printing packet summary lines, and, as we print the entire protocol
2980 tree for a single packet without waiting for anything to happen,
2981 it should be as good as line-buffered mode if we're printing
2982 protocol trees. (The whole reason for the "-l" flag in either
2983 tcpdump or TShark is to allow the output of a live capture to
2984 be piped to a program or script and to have that script see the
2985 information for the packet as soon as it's printed, rather than
2986 having to wait until a standard I/O buffer fills up. */
2990 if (ferror(stdout)) {
2991 show_print_file_io_error(errno);
3000 epan_dissect_reset(edt);
3002 return passed || fdata->flags.dependent_of_displayed;
3006 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3007 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3010 int snapshot_length;
3014 gchar *err_info = NULL;
3016 char *save_file_string = NULL;
3017 gboolean filtering_tap_listeners;
3019 wtapng_section_t *shb_hdr;
3020 wtapng_iface_descriptions_t *idb_inf;
3023 epan_dissect_t *edt = NULL;
3025 shb_hdr = wtap_file_get_shb_info(cf->wth);
3026 idb_inf = wtap_file_get_idb_info(cf->wth);
3027 #ifdef PCAP_NG_DEFAULT
3028 if (idb_inf->number_of_interfaces > 1) {
3029 linktype = WTAP_ENCAP_PER_PACKET;
3031 linktype = wtap_file_encap(cf->wth);
3034 linktype = wtap_file_encap(cf->wth);
3036 if (save_file != NULL) {
3037 /* Get a string that describes what we're writing to */
3038 save_file_string = output_file_description(save_file);
3040 /* Set up to write to the capture file. */
3041 snapshot_length = wtap_snapshot_length(cf->wth);
3042 if (snapshot_length == 0) {
3043 /* Snapshot length of input file not known. */
3044 snapshot_length = WTAP_MAX_PACKET_SIZE;
3046 /* If we don't have an application name add Tshark */
3047 if (shb_hdr->shb_user_appl == NULL) {
3048 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_svnversion);
3049 shb_hdr->shb_user_appl = appname;
3052 if (linktype != WTAP_ENCAP_PER_PACKET &&
3053 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3054 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3055 snapshot_length, FALSE /* compressed */, &err);
3057 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3058 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3064 /* We couldn't set up to write to the capture file. */
3067 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3068 cmdarg_err("Capture files can't be written in that format.");
3071 case WTAP_ERR_UNSUPPORTED_ENCAP:
3072 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3073 cmdarg_err("The capture file being read can't be written as a "
3074 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3077 case WTAP_ERR_CANT_OPEN:
3078 cmdarg_err("The %s couldn't be created for some "
3079 "unknown reason.", save_file_string);
3082 case WTAP_ERR_SHORT_WRITE:
3083 cmdarg_err("A full header couldn't be written to the %s.",
3088 cmdarg_err("The %s could not be created: %s.", save_file_string,
3089 wtap_strerror(err));
3095 if (print_packet_info) {
3096 if (!write_preamble(cf)) {
3098 show_print_file_io_error(err);
3107 if (pdh && out_file_name_res) {
3108 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3109 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3110 wtap_file_type_subtype_short_string(out_file_type));
3114 /* Do we have any tap listeners with filters? */
3115 filtering_tap_listeners = have_filtering_tap_listeners();
3117 /* Get the union of the flags for all tap listeners. */
3118 tap_flags = union_of_tap_listener_flags();
3120 if (perform_two_pass_analysis) {
3123 /* Allocate a frame_data_sequence for all the frames. */
3124 cf->frames = new_frame_data_sequence();
3126 if (do_dissection) {
3127 gboolean create_proto_tree = FALSE;
3129 /* If we're going to be applying a filter, we'll need to
3130 create a protocol tree against which to apply the filter. */
3132 create_proto_tree = TRUE;
3134 /* We're not going to display the protocol tree on this pass,
3135 so it's not going to be "visible". */
3136 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3139 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3140 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3141 wtap_buf_ptr(cf->wth))) {
3142 /* Stop reading if we have the maximum number of packets;
3143 * When the -c option has not been used, max_packet_count
3144 * starts at 0, which practically means, never stop reading.
3145 * (unless we roll over max_packet_count ?)
3147 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3148 err = 0; /* This is not an error */
3155 epan_dissect_free(edt);
3159 /* Close the sequential I/O side, to free up memory it requires. */
3160 wtap_sequential_close(cf->wth);
3162 /* Allow the protocol dissectors to free up memory that they
3163 * don't need after the sequential run-through of the packets. */
3164 postseq_cleanup_all_protocols();
3168 buffer_init(&buf, 1500);
3170 if (do_dissection) {
3171 gboolean create_proto_tree;
3173 if (cf->dfcode || print_details || filtering_tap_listeners ||
3174 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3175 create_proto_tree = TRUE;
3177 create_proto_tree = FALSE;
3179 /* The protocol tree will be "visible", i.e., printed, only if we're
3180 printing packet details, which is true if we're printing stuff
3181 ("print_packet_info" is true) and we're in verbose mode
3182 ("packet_details" is true). */
3183 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3186 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3187 fdata = frame_data_sequence_find(cf->frames, framenum);
3188 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->phdr,
3189 &buf, fdata->cap_len, &err, &err_info)) {
3190 if (process_packet_second_pass(cf, edt, fdata, &cf->phdr, &buf,
3192 /* Either there's no read filtering or this packet passed the
3193 filter, so, if we're writing to a capture file, write
3196 if (!wtap_dump(pdh, &cf->phdr, buffer_start_ptr(&cf->buf), &err)) {
3197 /* Error writing to a capture file */
3200 case WTAP_ERR_UNSUPPORTED_ENCAP:
3202 * This is a problem with the particular frame we're writing;
3203 * note that, and give the frame number.
3205 * XXX - framenum is not necessarily the frame number in
3206 * the input file if there was a read filter.
3209 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3210 framenum, cf->filename,
3211 wtap_file_type_subtype_short_string(out_file_type));
3215 show_capture_file_io_error(save_file, err, FALSE);
3218 wtap_dump_close(pdh, &err);
3228 epan_dissect_free(edt);
3237 if (do_dissection) {
3238 gboolean create_proto_tree;
3240 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3241 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3242 create_proto_tree = TRUE;
3244 create_proto_tree = FALSE;
3246 /* The protocol tree will be "visible", i.e., printed, only if we're
3247 printing packet details, which is true if we're printing stuff
3248 ("print_packet_info" is true) and we're in verbose mode
3249 ("packet_details" is true). */
3250 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3253 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3256 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3257 wtap_buf_ptr(cf->wth),
3259 /* Either there's no read filtering or this packet passed the
3260 filter, so, if we're writing to a capture file, write
3263 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err)) {
3264 /* Error writing to a capture file */
3267 case WTAP_ERR_UNSUPPORTED_ENCAP:
3269 * This is a problem with the particular frame we're writing;
3270 * note that, and give the frame number.
3273 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3274 framenum, cf->filename,
3275 wtap_file_type_subtype_short_string(out_file_type));
3279 show_capture_file_io_error(save_file, err, FALSE);
3282 wtap_dump_close(pdh, &err);
3288 /* Stop reading if we have the maximum number of packets;
3289 * When the -c option has not been used, max_packet_count
3290 * starts at 0, which practically means, never stop reading.
3291 * (unless we roll over max_packet_count ?)
3293 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3294 err = 0; /* This is not an error */
3300 epan_dissect_free(edt);
3307 * Print a message noting that the read failed somewhere along the line.
3309 * If we're printing packet data, and the standard output and error are
3310 * going to the same place, flush the standard output, so everything
3311 * buffered up is written, and then print a newline to the standard error
3312 * before printing the error message, to separate it from the packet
3313 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3314 * the _fstat() documentation at Microsoft doesn't indicate whether
3315 * st_ino is even supported.)
3318 if (print_packet_info) {
3319 struct stat stat_stdout, stat_stderr;
3321 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
3322 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3323 stat_stdout.st_ino == stat_stderr.st_ino) {
3325 fprintf(stderr, "\n");
3332 case WTAP_ERR_UNSUPPORTED:
3333 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3334 cf->filename, err_info);
3338 case WTAP_ERR_UNSUPPORTED_ENCAP:
3339 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
3340 cf->filename, err_info);
3344 case WTAP_ERR_CANT_READ:
3345 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
3349 case WTAP_ERR_SHORT_READ:
3350 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3354 case WTAP_ERR_BAD_FILE:
3355 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3356 cf->filename, err_info);
3360 case WTAP_ERR_DECOMPRESS:
3361 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3362 "(%s)", cf->filename, err_info);
3366 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3367 cf->filename, wtap_strerror(err));
3370 if (save_file != NULL) {
3371 /* Now close the capture file. */
3372 if (!wtap_dump_close(pdh, &err))
3373 show_capture_file_io_error(save_file, err, TRUE);
3376 if (save_file != NULL) {
3377 /* Now close the capture file. */
3378 if (!wtap_dump_close(pdh, &err))
3379 show_capture_file_io_error(save_file, err, TRUE);
3381 if (print_packet_info) {
3382 if (!write_finale()) {
3384 show_print_file_io_error(err);
3391 wtap_close(cf->wth);
3394 g_free(save_file_string);
3401 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3402 const guchar *pd, guint tap_flags)
3408 /* Count this packet. */
3411 /* If we're not running a display filter and we're not printing any
3412 packet information, we don't need to do a dissection. This means
3413 that all packets can be marked as 'passed'. */
3416 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3418 /* If we're going to print packet information, or we're going to
3419 run a read filter, or we're going to process taps, set up to
3420 do a dissection and do so. */
3422 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3423 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3424 /* Grab any resolved addresses */
3425 host_name_lookup_process();
3427 /* If we're running a filter, prime the epan_dissect_t with that
3430 epan_dissect_prime_dfilter(edt, cf->dfcode);
3432 col_custom_prime_edt(edt, &cf->cinfo);
3434 /* We only need the columns if either
3435 1) some tap needs the columns
3437 2) we're printing packet info but we're *not* verbose; in verbose
3438 mode, we print the protocol tree, not the protocol summary.
3440 3) there is a column mapped as an individual field */
3441 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3446 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3448 if (ref == &fdata) {
3453 epan_dissect_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3455 /* Run the filter if we have it. */
3457 passed = dfilter_apply_edt(cf->dfcode, edt);
3461 frame_data_set_after_dissect(&fdata, &cum_bytes);
3463 /* Process this packet. */
3464 if (print_packet_info) {
3465 /* We're printing packet information; print the information for
3467 print_packet(cf, edt);
3469 /* The ANSI C standard does not appear to *require* that a line-buffered
3470 stream be flushed to the host environment whenever a newline is
3471 written, it just says that, on such a stream, characters "are
3472 intended to be transmitted to or from the host environment as a
3473 block when a new-line character is encountered".
3475 The Visual C++ 6.0 C implementation doesn't do what is intended;
3476 even if you set a stream to be line-buffered, it still doesn't
3477 flush the buffer at the end of every line.
3479 So, if the "-l" flag was specified, we flush the standard output
3480 at the end of a packet. This will do the right thing if we're
3481 printing packet summary lines, and, as we print the entire protocol
3482 tree for a single packet without waiting for anything to happen,
3483 it should be as good as line-buffered mode if we're printing
3484 protocol trees. (The whole reason for the "-l" flag in either
3485 tcpdump or TShark is to allow the output of a live capture to
3486 be piped to a program or script and to have that script see the
3487 information for the packet as soon as it's printed, rather than
3488 having to wait until a standard I/O buffer fills up. */
3492 if (ferror(stdout)) {
3493 show_print_file_io_error(errno);
3498 /* this must be set after print_packet() [bug #8160] */
3499 prev_dis_frame = fdata;
3500 prev_dis = &prev_dis_frame;
3503 prev_cap_frame = fdata;
3504 prev_cap = &prev_cap_frame;
3507 epan_dissect_reset(edt);
3508 frame_data_destroy(&fdata);
3514 write_preamble(capture_file *cf)
3516 switch (output_action) {
3519 return print_preamble(print_stream, cf ? cf->filename : NULL, wireshark_svnversion);
3523 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3525 write_psml_preamble(stdout);
3526 return !ferror(stdout);
3529 write_fields_preamble(output_fields, stdout);
3530 return !ferror(stdout);
3533 g_assert_not_reached();
3539 get_line_buf(size_t len)
3541 static char *line_bufp = NULL;
3542 static size_t line_buf_len = 256;
3543 size_t new_line_buf_len;
3545 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3546 new_line_buf_len *= 2)
3548 if (line_bufp == NULL) {
3549 line_buf_len = new_line_buf_len;
3550 line_bufp = (char *)g_malloc(line_buf_len + 1);
3552 if (new_line_buf_len > line_buf_len) {
3553 line_buf_len = new_line_buf_len;
3554 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3561 put_string(char *dest, const char *str, size_t str_len)
3563 memcpy(dest, str, str_len);
3564 dest[str_len] = '\0';
3568 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3572 for (i = str_len; i < str_with_spaces; i++)
3575 put_string(dest, str, str_len);
3579 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3583 memcpy(dest, str, str_len);
3584 for (i = str_len; i < str_with_spaces; i++)
3587 dest[str_with_spaces] = '\0';
3591 print_columns(capture_file *cf)
3599 line_bufp = get_line_buf(256);
3602 for (i = 0; i < cf->cinfo.num_cols; i++) {
3603 /* Skip columns not marked as visible. */
3604 if (!get_column_visible(i))
3606 switch (cf->cinfo.col_fmt[i]) {
3608 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3611 line_bufp = get_line_buf(buf_offset + column_len);
3612 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3618 case COL_ABS_YMD_TIME: /* XXX - wider */
3619 case COL_ABS_YDOY_TIME: /* XXX - wider */
3621 case COL_UTC_YMD_TIME: /* XXX - wider */
3622 case COL_UTC_YDOY_TIME: /* XXX - wider */
3623 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3624 if (column_len < 10)
3626 line_bufp = get_line_buf(buf_offset + column_len);
3627 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3633 case COL_DEF_DL_SRC:
3634 case COL_RES_DL_SRC:
3635 case COL_UNRES_DL_SRC:
3636 case COL_DEF_NET_SRC:
3637 case COL_RES_NET_SRC:
3638 case COL_UNRES_NET_SRC:
3639 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3640 if (column_len < 12)
3642 line_bufp = get_line_buf(buf_offset + column_len);
3643 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3649 case COL_DEF_DL_DST:
3650 case COL_RES_DL_DST:
3651 case COL_UNRES_DL_DST:
3652 case COL_DEF_NET_DST:
3653 case COL_RES_NET_DST:
3654 case COL_UNRES_NET_DST:
3655 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3656 if (column_len < 12)
3658 line_bufp = get_line_buf(buf_offset + column_len);
3659 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3663 column_len = strlen(cf->cinfo.col_data[i]);
3664 line_bufp = get_line_buf(buf_offset + column_len);
3665 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3668 buf_offset += column_len;
3669 if (i != cf->cinfo.num_cols - 1) {
3671 * This isn't the last column, so we need to print a
3672 * separator between this column and the next.
3674 * If we printed a network source and are printing a
3675 * network destination of the same type next, separate
3676 * them with " -> "; if we printed a network destination
3677 * and are printing a network source of the same type
3678 * next, separate them with " <- "; otherwise separate them
3681 * We add enough space to the buffer for " <- " or " -> ",
3682 * even if we're only adding " ".
3684 line_bufp = get_line_buf(buf_offset + 4);
3685 switch (cf->cinfo.col_fmt[i]) {
3690 switch (cf->cinfo.col_fmt[i + 1]) {
3695 put_string(line_bufp + buf_offset, " -> ", 4);
3700 put_string(line_bufp + buf_offset, " ", 1);
3706 case COL_DEF_DL_SRC:
3707 case COL_RES_DL_SRC:
3708 case COL_UNRES_DL_SRC:
3709 switch (cf->cinfo.col_fmt[i + 1]) {
3711 case COL_DEF_DL_DST:
3712 case COL_RES_DL_DST:
3713 case COL_UNRES_DL_DST:
3714 put_string(line_bufp + buf_offset, " -> ", 4);
3719 put_string(line_bufp + buf_offset, " ", 1);
3725 case COL_DEF_NET_SRC:
3726 case COL_RES_NET_SRC:
3727 case COL_UNRES_NET_SRC:
3728 switch (cf->cinfo.col_fmt[i + 1]) {
3730 case COL_DEF_NET_DST:
3731 case COL_RES_NET_DST:
3732 case COL_UNRES_NET_DST:
3733 put_string(line_bufp + buf_offset, " -> ", 4);
3738 put_string(line_bufp + buf_offset, " ", 1);
3747 switch (cf->cinfo.col_fmt[i + 1]) {
3752 put_string(line_bufp + buf_offset, " <- ", 4);
3757 put_string(line_bufp + buf_offset, " ", 1);
3763 case COL_DEF_DL_DST:
3764 case COL_RES_DL_DST:
3765 case COL_UNRES_DL_DST:
3766 switch (cf->cinfo.col_fmt[i + 1]) {
3768 case COL_DEF_DL_SRC:
3769 case COL_RES_DL_SRC:
3770 case COL_UNRES_DL_SRC:
3771 put_string(line_bufp + buf_offset, " <- ", 4);
3776 put_string(line_bufp + buf_offset, " ", 1);
3782 case COL_DEF_NET_DST:
3783 case COL_RES_NET_DST:
3784 case COL_UNRES_NET_DST:
3785 switch (cf->cinfo.col_fmt[i + 1]) {
3787 case COL_DEF_NET_SRC:
3788 case COL_RES_NET_SRC:
3789 case COL_UNRES_NET_SRC:
3790 put_string(line_bufp + buf_offset, " <- ", 4);
3795 put_string(line_bufp + buf_offset, " ", 1);
3802 put_string(line_bufp + buf_offset, " ", 1);
3808 return print_line(print_stream, 0, line_bufp);
3812 print_packet(capture_file *cf, epan_dissect_t *edt)
3814 print_args_t print_args;
3816 if (print_summary || output_fields_has_cols(output_fields)) {
3817 /* Just fill in the columns. */
3818 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3820 if (print_summary) {
3821 /* Now print them. */
3822 switch (output_action) {
3825 if (!print_columns(cf))
3830 proto_tree_write_psml(edt, stdout);
3831 return !ferror(stdout);
3832 case WRITE_FIELDS: /*No non-verbose "fields" format */
3833 g_assert_not_reached();
3838 if (print_details) {
3839 /* Print the information in the protocol tree. */
3840 switch (output_action) {
3843 /* Only initialize the fields that are actually used in proto_tree_print.
3844 * This is particularly important for .range, as that's heap memory which
3845 * we would otherwise have to g_free().
3846 print_args.to_file = TRUE;
3847 print_args.format = print_format;
3848 print_args.print_summary = print_summary;
3849 print_args.print_formfeed = FALSE;
3850 packet_range_init(&print_args.range, &cfile);
3852 print_args.print_hex = print_hex;
3853 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3855 if (!proto_tree_print(&print_args, edt, print_stream))
3858 if (!print_line(print_stream, 0, separator))
3864 proto_tree_write_pdml(edt, stdout);
3866 return !ferror(stdout);
3868 proto_tree_write_fields(output_fields, edt, &cf->cinfo, stdout);
3870 return !ferror(stdout);
3874 if (print_summary || print_details) {
3875 if (!print_line(print_stream, 0, ""))
3878 if (!print_hex_data(print_stream, edt))
3880 if (!print_line(print_stream, 0, separator))
3889 switch (output_action) {
3892 return print_finale(print_stream);
3896 write_pdml_finale(stdout);
3898 write_psml_finale(stdout);
3899 return !ferror(stdout);
3902 write_fields_finale(output_fields, stdout);
3903 return !ferror(stdout);
3906 g_assert_not_reached();
3912 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3916 char err_msg[2048+1];
3918 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3922 /* The open succeeded. Fill in the information for this file. */
3924 /* Create new epan session for dissection. */
3925 epan_free(cf->epan);
3926 cf->epan = tshark_epan_new(cf);
3929 cf->f_datalen = 0; /* not used, but set it anyway */
3931 /* Set the file name because we need it to set the follow stream filter.
3932 XXX - is that still true? We need it for other reasons, though,
3934 cf->filename = g_strdup(fname);
3936 /* Indicate whether it's a permanent or temporary file. */
3937 cf->is_tempfile = is_tempfile;
3939 /* No user changes yet. */
3940 cf->unsaved_changes = FALSE;
3942 cf->cd_t = wtap_file_type_subtype(cf->wth);
3944 cf->drops_known = FALSE;
3946 cf->snap = wtap_snapshot_length(cf->wth);
3947 if (cf->snap == 0) {
3948 /* Snapshot length not known. */
3949 cf->has_snap = FALSE;
3950 cf->snap = WTAP_MAX_PACKET_SIZE;
3952 cf->has_snap = TRUE;
3953 nstime_set_zero(&cf->elapsed_time);
3958 cf->state = FILE_READ_IN_PROGRESS;
3960 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3961 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
3966 g_snprintf(err_msg, sizeof err_msg,
3967 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3968 cmdarg_err("%s", err_msg);
3973 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
3975 char *save_file_string;
3977 save_file_string = output_file_description(fname);
3982 cmdarg_err("Not all the packets could be written to the %s because there is "
3983 "no space left on the file system.",
3989 cmdarg_err("Not all the packets could be written to the %s because you are "
3990 "too close to, or over your disk quota.",
3995 case WTAP_ERR_CANT_CLOSE:
3996 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4000 case WTAP_ERR_SHORT_WRITE:
4001 cmdarg_err("Not all the packets could be written to the %s.",
4007 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4008 wtap_strerror(err));
4010 cmdarg_err("An error occurred while writing to the %s: %s.",
4011 save_file_string, wtap_strerror(err));
4015 g_free(save_file_string);
4019 show_print_file_io_error(int err)
4024 cmdarg_err("Not all the packets could be printed because there is "
4025 "no space left on the file system.");
4030 cmdarg_err("Not all the packets could be printed because you are "
4031 "too close to, or over your disk quota.");
4036 cmdarg_err("An error occurred while printing packets: %s.",
4043 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4047 static char errmsg_errno[1024+1];
4050 /* Wiretap error. */
4053 case WTAP_ERR_NOT_REGULAR_FILE:
4054 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4057 case WTAP_ERR_RANDOM_OPEN_PIPE:
4058 /* Seen only when opening a capture file for reading. */
4059 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4062 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4063 /* Seen only when opening a capture file for reading. */
4064 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4067 case WTAP_ERR_UNSUPPORTED:
4068 /* Seen only when opening a capture file for reading. */
4069 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4070 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
4073 errmsg = errmsg_errno;
4076 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4077 /* Seen only when opening a capture file for writing. */
4078 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4079 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4080 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4081 errmsg = errmsg_errno;
4084 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4085 /* Seen only when opening a capture file for writing. */
4086 errmsg = "TShark doesn't support writing capture files in that format.";
4089 case WTAP_ERR_UNSUPPORTED_ENCAP:
4091 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4092 "TShark can't save this capture as a \"%s\" file.",
4093 wtap_file_type_subtype_short_string(file_type));
4095 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4096 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
4100 errmsg = errmsg_errno;
4103 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4105 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4106 "TShark can't save this capture as a \"%s\" file.",
4107 wtap_file_type_subtype_short_string(file_type));
4108 errmsg = errmsg_errno;
4110 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4113 case WTAP_ERR_BAD_FILE:
4114 /* Seen only when opening a capture file for reading. */
4115 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4116 "The file \"%%s\" appears to be damaged or corrupt.\n"
4119 errmsg = errmsg_errno;
4122 case WTAP_ERR_CANT_OPEN:
4124 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4126 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4129 case WTAP_ERR_SHORT_READ:
4130 errmsg = "The file \"%s\" appears to have been cut short"
4131 " in the middle of a packet or other data.";
4134 case WTAP_ERR_SHORT_WRITE:
4135 errmsg = "A full header couldn't be written to the file \"%s\".";
4138 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4139 errmsg = "This file type cannot be written as a compressed file.";
4142 case WTAP_ERR_DECOMPRESS:
4143 /* Seen only when opening a capture file for reading. */
4144 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4145 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4148 errmsg = errmsg_errno;
4152 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4153 "The file \"%%s\" could not be %s: %s.",
4154 for_writing ? "created" : "opened",
4155 wtap_strerror(err));
4156 errmsg = errmsg_errno;
4160 errmsg = file_open_error_message(err, for_writing);
4165 * Open/create errors are reported with an console message in TShark.
4168 open_failure_message(const char *filename, int err, gboolean for_writing)
4170 fprintf(stderr, "tshark: ");
4171 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4172 fprintf(stderr, "\n");
4177 * General errors are reported with an console message in TShark.
4180 failure_message(const char *msg_format, va_list ap)
4182 fprintf(stderr, "tshark: ");
4183 vfprintf(stderr, msg_format, ap);
4184 fprintf(stderr, "\n");
4188 * Read errors are reported with an console message in TShark.
4191 read_failure_message(const char *filename, int err)
4193 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4194 filename, g_strerror(err));
4198 * Write errors are reported with an console message in TShark.
4201 write_failure_message(const char *filename, int err)
4203 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4204 filename, g_strerror(err));
4208 * Report an error in command-line arguments.
4211 cmdarg_err(const char *fmt, ...)
4216 failure_message(fmt, ap);
4221 * Report additional information for an error in command-line arguments.
4224 cmdarg_err_cont(const char *fmt, ...)
4229 vfprintf(stderr, fmt, ap);
4230 fprintf(stderr, "\n");
4236 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4241 * indent-tabs-mode: nil
4244 * vi: set shiftwidth=2 tabstop=8 expandtab:
4245 * :indentSize=2:tabSize=8:noTabs=true: