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>.
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
49 #ifdef HAVE_SYS_STAT_H
50 # include <sys/stat.h>
54 #include <zlib.h> /* to get the libz version number */
58 # include <sys/capability.h>
61 #ifndef HAVE_GETOPT_LONG
62 #include "wsutil/wsgetopt.h"
67 #include <epan/exceptions.h>
68 #include <epan/epan-int.h>
69 #include <epan/epan.h>
71 #include <wsutil/clopts_common.h>
72 #include <wsutil/cmdarg_err.h>
73 #include <wsutil/crash_info.h>
74 #include <wsutil/privileges.h>
75 #include <wsutil/file_util.h>
76 #include <wsutil/filesystem.h>
77 #include <wsutil/report_err.h>
78 #include <wsutil/os_version_info.h>
79 #include <wsutil/ws_version_info.h>
82 #include <epan/timestamp.h>
83 #include <epan/packet.h>
85 #include <epan/wslua/init_wslua.h>
88 #include "frame_tvbuff.h"
89 #include <epan/disabled_protos.h>
90 #include <epan/prefs.h>
91 #include <epan/column.h>
92 #include <epan/print.h>
93 #include <epan/addr_resolv.h>
95 #include "ui/capture_ui_utils.h"
98 #include "ui/ui_util.h"
99 #include "ui/cli/tshark-tap.h"
100 #include "version_info.h"
101 #include "register.h"
102 #include <epan/epan_dissect.h>
103 #include <epan/tap.h>
104 #include <epan/stat_tap_ui.h>
105 #include <epan/timestamp.h>
106 #include <epan/conversation_table.h>
107 #include <epan/ex-opt.h>
109 #include "capture_opts.h"
111 #include "caputils/capture-pcap-util.h"
114 #include "caputils/capture_ifinfo.h"
116 #include "caputils/capture-wpcap.h"
117 #include <wsutil/unicode-utils.h>
119 #include <capchild/capture_session.h>
120 #include <capchild/capture_sync.h>
121 #include "capture_opts.h"
122 #endif /* HAVE_LIBPCAP */
124 #include <epan/funnel.h>
127 #include <wsutil/plugins.h>
131 * This is the template for the decode as option; it is shared between the
132 * various functions that output the usage for this parameter.
134 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
136 static guint32 cum_bytes;
137 static const frame_data *ref;
138 static frame_data ref_frame;
139 static frame_data *prev_dis;
140 static frame_data prev_dis_frame;
141 static frame_data *prev_cap;
142 static frame_data prev_cap_frame;
144 static const char* prev_display_dissector_name = NULL;
146 static gboolean perform_two_pass_analysis;
149 * The way the packet decode is to be written.
152 WRITE_TEXT, /* summary or detail text */
153 WRITE_XML, /* PDML or PSML */
154 WRITE_FIELDS /* User defined list of fields */
155 /* Add CSV and the like here */
158 static output_action_e output_action;
159 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
160 static gboolean print_packet_info; /* TRUE if we're to print packet information */
161 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
162 static gboolean print_details; /* TRUE if we're to print packet details information */
163 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
164 static gboolean line_buffered;
165 static gboolean really_quiet = FALSE;
167 static print_format_e print_format = PR_FMT_TEXT;
168 static print_stream_t *print_stream;
170 static output_fields_t* output_fields = NULL;
172 /* The line separator used between packets, changeable via the -S option */
173 static const char *separator = "";
177 * TRUE if we're to print packet counts to keep track of captured packets.
179 static gboolean print_packet_counts;
181 static capture_options global_capture_opts;
182 static capture_session global_capture_session;
185 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
186 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
189 static gboolean capture(void);
190 static void report_counts(void);
192 static BOOL WINAPI capture_cleanup(DWORD);
194 static void capture_cleanup(int);
196 static void report_counts_siginfo(int);
200 #else /* HAVE_LIBPCAP */
202 static char *output_file_name;
204 #endif /* HAVE_LIBPCAP */
206 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
207 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
208 struct wtap_pkthdr *whdr, const guchar *pd,
210 static void show_capture_file_io_error(const char *, int, gboolean);
211 static void show_print_file_io_error(int err);
212 static gboolean write_preamble(capture_file *cf);
213 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
214 static gboolean write_finale(void);
215 static const char *cf_open_error_message(int err, gchar *err_info,
216 gboolean for_writing, int file_type);
218 static void open_failure_message(const char *filename, int err,
219 gboolean for_writing);
220 static void failure_message(const char *msg_format, va_list ap);
221 static void read_failure_message(const char *filename, int err);
222 static void write_failure_message(const char *filename, int err);
223 static void failure_message_cont(const char *msg_format, va_list ap);
227 static GHashTable *output_only_tables = NULL;
230 const char *sstr; /* The short string */
231 const char *lstr; /* The long string */
235 string_compare(gconstpointer a, gconstpointer b)
237 return strcmp(((const struct string_elem *)a)->sstr,
238 ((const struct string_elem *)b)->sstr);
242 string_elem_print(gpointer data, gpointer not_used _U_)
244 fprintf(stderr, " %s - %s\n",
245 ((struct string_elem *)data)->sstr,
246 ((struct string_elem *)data)->lstr);
250 list_capture_types(void) {
252 struct string_elem *captypes;
255 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
257 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
258 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
259 if (wtap_dump_can_open(i)) {
260 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
261 captypes[i].lstr = wtap_file_type_subtype_string(i);
262 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
265 g_slist_foreach(list, string_elem_print, NULL);
271 list_read_capture_types(void) {
273 struct string_elem *captypes;
275 const char *magic = "Magic-value-based";
276 const char *heuristic = "Heuristics-based";
278 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
279 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
281 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
282 for (i = 0; open_routines[i].name != NULL; i++) {
283 captypes[i].sstr = open_routines[i].name;
284 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
285 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
287 g_slist_foreach(list, string_elem_print, NULL);
293 print_usage(FILE *output)
295 fprintf(output, "\n");
296 fprintf(output, "Usage: tshark [options] ...\n");
297 fprintf(output, "\n");
300 fprintf(output, "Capture interface:\n");
301 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
302 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
303 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
304 fprintf(output, " -p don't capture in promiscuous mode\n");
305 #ifdef HAVE_PCAP_CREATE
306 fprintf(output, " -I capture in monitor mode, if available\n");
308 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
309 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
311 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
312 fprintf(output, " -D print list of interfaces and exit\n");
313 fprintf(output, " -L print list of link-layer types of iface and exit\n");
314 fprintf(output, "\n");
315 fprintf(output, "Capture stop conditions:\n");
316 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
317 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
318 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
319 fprintf(output, " files:NUM - stop after NUM files\n");
320 /*fprintf(output, "\n");*/
321 fprintf(output, "Capture output:\n");
322 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
323 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
324 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
325 #endif /* HAVE_LIBPCAP */
326 #ifdef HAVE_PCAP_REMOTE
327 fprintf(output, "RPCAP options:\n");
328 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
330 /*fprintf(output, "\n");*/
331 fprintf(output, "Input file:\n");
332 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
334 fprintf(output, "\n");
335 fprintf(output, "Processing:\n");
336 fprintf(output, " -2 perform a two-pass analysis\n");
337 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
338 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
339 fprintf(output, " syntax\n");
340 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
341 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
342 fprintf(output, " -d %s ...\n", decode_as_arg_template);
343 fprintf(output, " \"Decode As\", see the man page for details\n");
344 fprintf(output, " Example: tcp.port==8888,http\n");
345 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
346 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
348 /*fprintf(output, "\n");*/
349 fprintf(output, "Output:\n");
350 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
351 fprintf(output, " (or to the standard output for \"-\")\n");
352 fprintf(output, " -C <config profile> start with specified configuration profile\n");
353 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
354 fprintf(output, " an empty \"-F\" option will list the file types\n");
355 fprintf(output, " -V add output of packet tree (Packet Details)\n");
356 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
357 fprintf(output, " separated\n");
358 fprintf(output, " -P print packet summary even when writing to a file\n");
359 fprintf(output, " -S <separator> the line separator to print between packets\n");
360 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
361 fprintf(output, " -T pdml|ps|psml|text|fields\n");
362 fprintf(output, " format of text output (def: text)\n");
363 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
364 fprintf(output, " _ws.col.Info)\n");
365 fprintf(output, " this option can be repeated to print multiple fields\n");
366 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
367 fprintf(output, " header=y|n switch headers on and off\n");
368 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
369 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
370 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
371 fprintf(output, " aggregator\n");
372 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
373 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
374 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
375 fprintf(output, " -l flush standard output after each packet\n");
376 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
377 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
378 fprintf(output, " -g enable group read access on the output file(s)\n");
379 fprintf(output, " -W n Save extra information in the file, if supported.\n");
380 fprintf(output, " n = write network address resolution information\n");
381 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
382 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
383 fprintf(output, " --capture-comment <comment>\n");
384 fprintf(output, " add a capture comment to the newly created\n");
385 fprintf(output, " output file (only for pcapng)\n");
387 fprintf(output, "\n");
388 fprintf(output, "Miscellaneous:\n");
389 fprintf(output, " -h display this help and exit\n");
390 fprintf(output, " -v display version info and exit\n");
391 fprintf(output, " -o <name>:<value> ... override preference setting\n");
392 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
393 fprintf(output, " -G [report] dump one of several available reports and exit\n");
394 fprintf(output, " default report=\"fields\"\n");
395 fprintf(output, " use \"-G ?\" for more help\n");
397 fprintf(output, "\n");
398 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
399 fprintf(output, "You might want to reset it\n");
400 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
401 fprintf(output, "\n");
407 glossary_option_help(void)
413 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
415 fprintf(output, "\n");
416 fprintf(output, "Usage: tshark -G [report]\n");
417 fprintf(output, "\n");
418 fprintf(output, "Glossary table reports:\n");
419 fprintf(output, " -G column-formats dump column format codes and exit\n");
420 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
421 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
422 fprintf(output, " -G fields dump fields glossary and exit\n");
423 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
424 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
425 fprintf(output, " -G plugins dump installed plugins and exit\n");
426 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
427 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
428 fprintf(output, "\n");
429 fprintf(output, "Preference reports:\n");
430 fprintf(output, " -G currentprefs dump current preferences and exit\n");
431 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
432 fprintf(output, "\n");
436 * For a dissector table, print on the stream described by output,
437 * its short name (which is what's used in the "-d" option) and its
441 display_dissector_table_names(const char *table_name, const char *ui_name,
444 if ((prev_display_dissector_name == NULL) ||
445 (strcmp(prev_display_dissector_name, table_name) != 0)) {
446 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
447 prev_display_dissector_name = table_name;
452 * For a dissector handle, print on the stream described by output,
453 * the filter name (which is what's used in the "-d" option) and the full
454 * name for the protocol that corresponds to this handle.
457 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
460 const gchar *proto_filter_name;
461 const gchar *proto_ui_name;
463 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
465 if (proto_id != -1) {
466 proto_filter_name = proto_get_protocol_filter_name(proto_id);
467 proto_ui_name = proto_get_protocol_name(proto_id);
468 g_assert(proto_filter_name != NULL);
469 g_assert(proto_ui_name != NULL);
471 if ((prev_display_dissector_name == NULL) ||
472 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
473 fprintf((FILE *)output, "\t%s (%s)\n",
476 prev_display_dissector_name = proto_filter_name;
482 * The protocol_name_search structure is used by find_protocol_name_func()
483 * to pass parameters and store results
485 struct protocol_name_search{
486 gchar *searched_name; /* Protocol filter name we are looking for */
487 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
488 guint nb_match; /* How many dissectors matched searched_name */
490 typedef struct protocol_name_search *protocol_name_search_t;
493 * This function parses all dissectors associated with a table to find the
494 * one whose protocol has the specified filter name. It is called
495 * as a reference function in a call to dissector_table_foreach_handle.
496 * The name we are looking for, as well as the results, are stored in the
497 * protocol_name_search struct pointed to by user_data.
498 * If called using dissector_table_foreach_handle, we actually parse the
499 * whole list of dissectors.
502 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
506 const gchar *protocol_filter_name;
507 protocol_name_search_t search_info;
511 search_info = (protocol_name_search_t)user_data;
513 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
514 if (proto_id != -1) {
515 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
516 g_assert(protocol_filter_name != NULL);
517 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
519 if (search_info->nb_match == 0) {
520 /* Record this handle only if this is the first match */
521 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
523 search_info->nb_match++;
529 * Allow dissector key names to be sorted alphabetically
533 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
535 return strcmp((const char*)dissector_a, (const char*)dissector_b);
539 * Print all layer type names supported.
540 * We send the output to the stream described by the handle output.
544 fprint_all_layer_types(FILE *output)
547 prev_display_dissector_name = NULL;
548 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
552 * Print all protocol names supported for a specific layer type.
553 * table_name contains the layer type name in which the search is performed.
554 * We send the output to the stream described by the handle output.
558 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
561 prev_display_dissector_name = NULL;
562 dissector_table_foreach_handle(table_name,
563 display_dissector_names,
568 * The function below parses the command-line parameters for the decode as
569 * feature (a string pointer by cl_param).
570 * It checks the format of the command-line, searches for a matching table
571 * and dissector. If a table/dissector match is not found, we display a
572 * summary of the available tables/dissectors (on stderr) and return FALSE.
573 * If everything is fine, we get the "Decode as" preference activated,
574 * then we return TRUE.
577 add_decode_as(const gchar *cl_param)
580 guint32 selector, selector2;
581 gchar *decoded_param;
582 gchar *remaining_param;
584 gchar *dissector_str;
585 dissector_handle_t dissector_matching;
586 dissector_table_t table_matching;
587 ftenum_t dissector_table_selector_type;
588 struct protocol_name_search user_protocol_name;
592 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
595 decoded_param = g_strdup(cl_param);
596 g_assert(decoded_param);
599 /* The lines below will parse this string (modifying it) to extract all
600 necessary information. Note that decoded_param is still needed since
601 strings are not copied - we just save pointers. */
603 /* This section extracts a layer type (table_name) from decoded_param */
604 table_name = decoded_param; /* Layer type string starts from beginning */
606 remaining_param = strchr(table_name, '=');
607 if (remaining_param == NULL) {
608 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
609 /* If the argument does not follow the template, carry on anyway to check
610 if the table name is at least correct. If remaining_param is NULL,
611 we'll exit anyway further down */
614 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
617 /* Remove leading and trailing spaces from the table name */
618 while ( table_name[0] == ' ' )
620 while ( table_name[strlen(table_name) - 1] == ' ' )
621 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
623 /* The following part searches a table matching with the layer type specified */
624 table_matching = NULL;
626 /* Look for the requested table */
627 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
628 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
631 table_matching = find_dissector_table(table_name);
632 if (!table_matching) {
633 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
637 if (!table_matching) {
638 /* Display a list of supported layer types to help the user, if the
639 specified layer type was not found */
640 cmdarg_err("Valid layer types are:");
641 fprint_all_layer_types(stderr);
643 if (remaining_param == NULL || !table_matching) {
644 /* Exit if the layer type was not found, or if no '=' separator was found
646 g_free(decoded_param);
650 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
651 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
654 remaining_param++; /* Move to the second '=' */
655 *remaining_param = '\0'; /* Remove the second '=' */
657 remaining_param++; /* Position after the layer type string */
659 /* This section extracts a selector value (selector_str) from decoded_param */
661 selector_str = remaining_param; /* Next part starts with the selector number */
663 remaining_param = strchr(selector_str, ',');
664 if (remaining_param == NULL) {
665 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
666 /* If the argument does not follow the template, carry on anyway to check
667 if the selector value is at least correct. If remaining_param is NULL,
668 we'll exit anyway further down */
671 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
674 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
676 switch (dissector_table_selector_type) {
682 /* The selector for this table is an unsigned number. Parse it as such.
683 There's no need to remove leading and trailing spaces from the
684 selector number string, because sscanf will do that for us. */
685 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
690 if (op != ':' && op != '-') {
691 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
692 g_free(decoded_param);
696 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
697 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
698 g_free(decoded_param);
702 else if (selector2 < selector) {
703 /* We could swap them for the user, but maybe it's better to call
704 * this out as an error in case it's not what was intended? */
705 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
706 g_free(decoded_param);
711 cmdarg_err("Invalid selector number \"%s\"", selector_str);
712 g_free(decoded_param);
721 /* The selector for this table is a string. */
725 /* There are currently no dissector tables with any types other
726 than the ones listed above. */
727 g_assert_not_reached();
730 if (remaining_param == NULL) {
731 /* Exit if no ',' separator was found (see above) */
732 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
733 fprint_all_protocols_for_layer_types(stderr, table_name);
734 g_free(decoded_param);
738 remaining_param++; /* Position after the selector number string */
740 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
742 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
744 /* Remove leading and trailing spaces from the dissector name */
745 while ( dissector_str[0] == ' ' )
747 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
748 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
750 dissector_matching = NULL;
752 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
753 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 */
754 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
757 user_protocol_name.nb_match = 0;
758 user_protocol_name.searched_name = dissector_str;
759 user_protocol_name.matched_handle = NULL;
761 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 */
763 if (user_protocol_name.nb_match != 0) {
764 dissector_matching = user_protocol_name.matched_handle;
765 if (user_protocol_name.nb_match > 1) {
766 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
770 /* OK, check whether the problem is that there isn't any such
771 protocol, or that there is but it's not specified as a protocol
772 that's valid for that dissector table.
773 Note, we don't exit here, but dissector_matching will remain NULL,
775 if (proto_get_id_by_filter_name(dissector_str) == -1) {
776 /* No such protocol */
777 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
779 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
780 dissector_str, table_name);
785 if (!dissector_matching) {
786 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
787 fprint_all_protocols_for_layer_types(stderr, table_name);
788 g_free(decoded_param);
792 /* This is the end of the code that parses the command-line options.
793 All information is now stored in the variables:
797 The above variables that are strings are still pointing to areas within
798 decoded_parm. decoded_parm thus still needs to be kept allocated in
799 until we stop needing these variables
800 decoded_param will be deallocated at each exit point of this function */
803 /* We now have a pointer to the handle for the requested dissector
804 (requested protocol) inside the variable dissector_matching */
805 switch (dissector_table_selector_type) {
811 /* The selector for this table is an unsigned number. */
813 dissector_change_uint(table_name, selector, dissector_matching);
814 } else if (op == ':') {
815 for (i = selector; i < (guint64)selector + selector2; i++) {
816 dissector_change_uint(table_name, (guint32)i, dissector_matching);
818 } else { /* op == '-' */
819 for (i = selector; i <= selector2; i++) {
820 dissector_change_uint(table_name, (guint32)i, dissector_matching);
829 /* The selector for this table is a string. */
830 dissector_change_string(table_name, selector_str, dissector_matching);
834 /* There are currently no dissector tables with any types other
835 than the ones listed above. */
836 g_assert_not_reached();
838 g_free(decoded_param); /* "Decode As" rule has been successfully added */
843 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
844 const gchar *message, gpointer user_data)
846 /* ignore log message, if log_level isn't interesting based
847 upon the console log preferences.
848 If the preferences haven't been loaded loaded yet, display the
851 The default console_log_level preference value is such that only
852 ERROR, CRITICAL and WARNING level messages are processed;
853 MESSAGE, INFO and DEBUG level messages are ignored.
855 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
856 ERROR and CRITICAL level messages so the current code is a behavioral
857 change. The current behavior is the same as in Wireshark.
859 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
860 prefs.console_log_level != 0) {
864 g_log_default_handler(log_domain, log_level, message, user_data);
869 output_file_description(const char *fname)
871 char *save_file_string;
873 /* Get a string that describes what we're writing to */
874 if (strcmp(fname, "-") == 0) {
875 /* We're writing to the standard output */
876 save_file_string = g_strdup("standard output");
878 /* We're writing to a file with the name in save_file */
879 save_file_string = g_strdup_printf("file \"%s\"", fname);
881 return save_file_string;
885 print_current_user(void) {
886 gchar *cur_user, *cur_group;
888 if (started_with_special_privs()) {
889 cur_user = get_cur_username();
890 cur_group = get_cur_groupname();
891 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
892 cur_user, cur_group);
895 if (running_with_special_privs()) {
896 fprintf(stderr, " This could be dangerous.");
898 fprintf(stderr, "\n");
903 get_tshark_compiled_version_info(GString *str)
905 /* Capture libraries */
906 get_compiled_caplibs_version(str);
909 g_string_append(str, ", ");
911 g_string_append(str, "with libz ");
913 g_string_append(str, ZLIB_VERSION);
914 #else /* ZLIB_VERSION */
915 g_string_append(str, "(version unknown)");
916 #endif /* ZLIB_VERSION */
917 #else /* HAVE_LIBZ */
918 g_string_append(str, "without libz");
919 #endif /* HAVE_LIBZ */
923 get_tshark_runtime_version_info(GString *str)
926 /* Capture libraries */
927 g_string_append(str, ", ");
928 get_runtime_caplibs_version(str);
932 #if defined(HAVE_LIBZ) && !defined(_WIN32)
933 g_string_append_printf(str, ", with libz %s", zlibVersion());
936 /* stuff used by libwireshark */
937 epan_get_runtime_version_info(str);
941 main(int argc, char *argv[])
943 GString *comp_info_str;
944 GString *runtime_info_str;
945 char *init_progfile_dir_error;
947 static const struct option long_options[] = {
948 {(char *)"help", no_argument, NULL, 'h'},
949 {(char *)"version", no_argument, NULL, 'v'},
950 LONGOPT_CAPTURE_COMMON
953 gboolean arg_error = FALSE;
959 char *gpf_path, *pf_path;
960 char *gdp_path, *dp_path;
961 int gpf_open_errno, gpf_read_errno;
962 int pf_open_errno, pf_read_errno;
963 int gdp_open_errno, gdp_read_errno;
964 int dp_open_errno, dp_read_errno;
966 volatile int exit_status = 0;
968 gboolean list_link_layer_types = FALSE;
969 gboolean start_capture = FALSE;
974 gboolean capture_option_specified = FALSE;
976 gboolean quiet = FALSE;
977 #ifdef PCAP_NG_DEFAULT
978 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
980 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
982 volatile gboolean out_file_name_res = FALSE;
983 volatile int in_file_type = WTAP_TYPE_AUTO;
984 gchar *volatile cf_name = NULL;
985 gchar *rfilter = NULL;
986 gchar *dfilter = NULL;
987 #ifdef HAVE_PCAP_OPEN_DEAD
988 struct bpf_program fcode;
990 dfilter_t *rfcode = NULL;
991 dfilter_t *dfcode = NULL;
996 gchar *output_only = NULL;
998 /* the leading - ensures that getopt() does not permute the argv[] entries
999 we have to make sure that the first getopt() preserves the content of argv[]
1000 for the subsequent getopt_long() call */
1001 #define OPTSTRING "-2" OPTSTRING_CAPTURE_COMMON "C:d:e:E:F:gG:hH:" "K:lnN:o:O:PqQr:R:S:t:T:u:vVw:W:xX:Y:z:"
1003 static const char optstring[] = OPTSTRING;
1005 cmdarg_err_init(failure_message, failure_message_cont);
1008 arg_list_utf_16to8(argc, argv);
1009 create_app_running_mutex();
1010 #if !GLIB_CHECK_VERSION(2,31,0)
1011 g_thread_init(NULL);
1016 * Get credential information for later use, and drop privileges
1017 * before doing anything else.
1018 * Let the user know if anything happened.
1020 init_process_policies();
1021 relinquish_special_privs_perm();
1022 print_current_user();
1025 * Attempt to get the pathname of the executable file.
1027 init_progfile_dir_error = init_progfile_dir(argv[0], main);
1028 if (init_progfile_dir_error != NULL) {
1029 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1030 init_progfile_dir_error);
1033 initialize_funnel_ops();
1036 /* Load wpcap if possible. Do this before collecting the run-time version information */
1039 /* Warn the user if npf.sys isn't loaded. */
1040 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
1041 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
1042 "capturing or\nlisting interfaces.\n");
1046 /* Assemble the compile-time version information string */
1047 comp_info_str = g_string_new("Compiled ");
1048 get_compiled_version_info(comp_info_str, get_tshark_compiled_version_info,
1049 epan_get_compiled_version_info);
1051 /* Assemble the run-time version information string */
1052 runtime_info_str = g_string_new("Running ");
1053 get_runtime_version_info(runtime_info_str, get_tshark_runtime_version_info);
1055 /* Add it to the information to be reported on a crash. */
1056 ws_add_crash_info("TShark (Wireshark) %s\n"
1061 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
1064 * In order to have the -X opts assigned before the wslua machine starts
1065 * we need to call getopts before epan_init() gets called.
1068 optind_initial = optind;
1070 while ((opt = getopt(argc, argv, optstring)) != -1) {
1072 case 'C': /* Configuration Profile */
1073 if (profile_exists (optarg, FALSE)) {
1074 set_profile_name (optarg);
1076 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1080 case 'P': /* Print packet summary info even when writing to a file */
1081 print_packet_info = TRUE;
1082 print_summary = TRUE;
1084 case 'O': /* Only output these protocols */
1085 output_only = g_strdup(optarg);
1087 case 'V': /* Verbose */
1088 print_details = TRUE;
1089 print_packet_info = TRUE;
1091 case 'x': /* Print packet data in hex (and ASCII) */
1093 /* The user asked for hex output, so let's ensure they get it,
1094 * even if they're writing to a file.
1096 print_packet_info = TRUE;
1107 * Print packet summary information is the default, unless either -V or -x
1108 * were specified and -P was not. Note that this is new behavior, which
1109 * allows for the possibility of printing only hex/ascii output without
1110 * necessarily requiring that either the summary or details be printed too.
1112 if (print_summary == -1)
1113 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1115 optind = optind_initial;
1120 /** Send All g_log messages to our own handler **/
1124 G_LOG_LEVEL_CRITICAL|
1125 G_LOG_LEVEL_WARNING|
1126 G_LOG_LEVEL_MESSAGE|
1129 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1131 g_log_set_handler(NULL,
1132 (GLogLevelFlags)log_flags,
1133 tshark_log_handler, NULL /* user_data */);
1134 g_log_set_handler(LOG_DOMAIN_MAIN,
1135 (GLogLevelFlags)log_flags,
1136 tshark_log_handler, NULL /* user_data */);
1139 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1140 (GLogLevelFlags)log_flags,
1141 tshark_log_handler, NULL /* user_data */);
1142 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1143 (GLogLevelFlags)log_flags,
1144 tshark_log_handler, NULL /* user_data */);
1147 init_report_err(failure_message, open_failure_message, read_failure_message,
1148 write_failure_message);
1151 capture_opts_init(&global_capture_opts);
1152 capture_session_init(&global_capture_session, &cfile);
1155 timestamp_set_type(TS_RELATIVE);
1156 timestamp_set_precision(TS_PREC_AUTO);
1157 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1159 init_open_routines();
1162 /* Register all the plugin types we have. */
1163 epan_register_plugin_types(); /* Types known to libwireshark */
1164 wtap_register_plugin_types(); /* Types known to libwiretap */
1166 /* Scan for plugins. This does *not* call their registration routines;
1167 that's done later. */
1170 /* Register all libwiretap plugin modules. */
1171 register_all_wiretap_modules();
1174 /* Register all dissectors; we must do this before checking for the
1175 "-G" flag, as the "-G" flag dumps information registered by the
1176 dissectors, and we must do it before we read the preferences, in
1177 case any dissectors register preferences. */
1178 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1180 /* Register all tap listeners; we do this before we parse the arguments,
1181 as the "-z" argument can specify a registered tap. */
1183 /* we register the plugin taps before the other taps because
1184 stats_tree taps plugins will be registered as tap listeners
1185 by stats_tree_stat.c and need to registered before that */
1187 register_all_plugin_tap_listeners();
1189 register_all_tap_listeners();
1190 conversation_table_set_gui_info(init_iousers);
1191 hostlist_table_set_gui_info(NULL); /* XXX - TODO: Provide "GUI" function for TShark */
1193 /* If invoked with the "-G" flag, we dump out information based on
1194 the argument to the "-G" flag; if no argument is specified,
1195 for backwards compatibility we dump out a glossary of display
1198 XXX - we do this here, for now, to support "-G" with no arguments.
1199 If none of our build or other processes uses "-G" with no arguments,
1200 we can just process it with the other arguments. */
1201 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1202 proto_initialize_all_prefixes();
1205 proto_registrar_dump_fields();
1207 if (strcmp(argv[2], "column-formats") == 0)
1208 column_dump_column_formats();
1209 else if (strcmp(argv[2], "currentprefs") == 0) {
1210 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1211 &pf_open_errno, &pf_read_errno, &pf_path);
1214 else if (strcmp(argv[2], "decodes") == 0)
1215 dissector_dump_decodes();
1216 else if (strcmp(argv[2], "defaultprefs") == 0)
1218 else if (strcmp(argv[2], "dissector-tables") == 0)
1219 dissector_dump_dissector_tables();
1220 else if (strcmp(argv[2], "fields") == 0)
1221 proto_registrar_dump_fields();
1222 else if (strcmp(argv[2], "ftypes") == 0)
1223 proto_registrar_dump_ftypes();
1224 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1225 dissector_dump_heur_decodes();
1226 else if (strcmp(argv[2], "plugins") == 0) {
1231 wslua_plugins_dump_all();
1234 else if (strcmp(argv[2], "protocols") == 0)
1235 proto_registrar_dump_protocols();
1236 else if (strcmp(argv[2], "values") == 0)
1237 proto_registrar_dump_values();
1238 else if (strcmp(argv[2], "?") == 0)
1239 glossary_option_help();
1240 else if (strcmp(argv[2], "-?") == 0)
1241 glossary_option_help();
1243 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1250 /* Set the C-language locale to the native environment. */
1251 setlocale(LC_ALL, "");
1253 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1254 &pf_open_errno, &pf_read_errno, &pf_path);
1255 if (gpf_path != NULL) {
1256 if (gpf_open_errno != 0) {
1257 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1258 pf_path, g_strerror(gpf_open_errno));
1260 if (gpf_read_errno != 0) {
1261 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1262 pf_path, g_strerror(gpf_read_errno));
1265 if (pf_path != NULL) {
1266 if (pf_open_errno != 0) {
1267 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1268 g_strerror(pf_open_errno));
1270 if (pf_read_errno != 0) {
1271 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1272 pf_path, g_strerror(pf_read_errno));
1278 /* Read the disabled protocols file. */
1279 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1280 &dp_path, &dp_open_errno, &dp_read_errno);
1281 if (gdp_path != NULL) {
1282 if (gdp_open_errno != 0) {
1283 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1284 gdp_path, g_strerror(gdp_open_errno));
1286 if (gdp_read_errno != 0) {
1287 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1288 gdp_path, g_strerror(gdp_read_errno));
1292 if (dp_path != NULL) {
1293 if (dp_open_errno != 0) {
1295 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1296 g_strerror(dp_open_errno));
1298 if (dp_read_errno != 0) {
1300 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1301 g_strerror(dp_read_errno));
1306 cap_file_init(&cfile);
1308 /* Print format defaults to this. */
1309 print_format = PR_FMT_TEXT;
1311 output_fields = output_fields_new();
1313 /* Now get our args */
1314 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1316 case '2': /* Perform two pass analysis */
1317 perform_two_pass_analysis = TRUE;
1319 case 'a': /* autostop criteria */
1320 case 'b': /* Ringbuffer option */
1321 case 'c': /* Capture x packets */
1322 case 'f': /* capture filter */
1323 case 'g': /* enable group read access on file(s) */
1324 case 'i': /* Use interface x */
1325 case 'p': /* Don't capture in promiscuous mode */
1326 #ifdef HAVE_PCAP_REMOTE
1327 case 'A': /* Authentication */
1329 #ifdef HAVE_PCAP_CREATE
1330 case 'I': /* Capture in monitor mode, if available */
1332 case 's': /* Set the snapshot (capture) length */
1333 case 'w': /* Write to capture file x */
1334 case 'y': /* Set the pcap data link type */
1335 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1336 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1337 case 'B': /* Buffer size */
1338 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1340 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1347 * Output file name, if we're reading a file and writing to another
1350 output_file_name = optarg;
1352 capture_option_specified = TRUE;
1358 /* Configuration profile settings were already processed just ignore them this time*/
1360 case 'd': /* Decode as rule */
1361 if (!add_decode_as(optarg))
1364 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1365 case 'K': /* Kerberos keytab file */
1366 read_keytab_file(optarg);
1369 case 'D': /* Print a list of capture devices and exit */
1371 if_list = capture_interface_list(&err, &err_str,NULL);
1372 if (if_list == NULL) {
1374 cmdarg_err("There are no interfaces on which a capture can be done");
1376 cmdarg_err("%s", err_str);
1381 capture_opts_print_interfaces(if_list);
1382 free_interface_list(if_list);
1385 capture_option_specified = TRUE;
1391 output_fields_add(output_fields, optarg);
1395 if (!output_fields_set_option(output_fields, optarg)) {
1396 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1397 output_fields_list_options(stderr);
1402 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1403 if (out_file_type < 0) {
1404 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1405 list_capture_types();
1409 case 'W': /* Select extra information to save in our capture file */
1410 /* This is patterned after the -N flag which may not be the best idea. */
1411 if (strchr(optarg, 'n')) {
1412 out_file_name_res = TRUE;
1414 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1415 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1419 case 'H': /* Read address to name mappings from a hosts file */
1420 if (! add_hosts_file(optarg))
1422 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1425 out_file_name_res = TRUE;
1428 case 'h': /* Print help and exit */
1429 printf("TShark (Wireshark) %s\n"
1430 "Dump and analyze network traffic.\n"
1431 "See http://www.wireshark.org for more information.\n",
1432 get_ws_vcs_version_info());
1433 print_usage(stdout);
1436 case 'l': /* "Line-buffer" standard output */
1437 /* This isn't line-buffering, strictly speaking, it's just
1438 flushing the standard output after the information for
1439 each packet is printed; however, that should be good
1440 enough for all the purposes to which "-l" is put (and
1441 is probably actually better for "-V", as it does fewer
1444 See the comment in "process_packet()" for an explanation of
1445 why we do that, and why we don't just use "setvbuf()" to
1446 make the standard output line-buffered (short version: in
1447 Windows, "line-buffered" is the same as "fully-buffered",
1448 and the output buffer is only flushed when it fills up). */
1449 line_buffered = TRUE;
1451 case 'L': /* Print list of link-layer types and exit */
1453 list_link_layer_types = TRUE;
1455 capture_option_specified = TRUE;
1459 case 'n': /* No name resolution */
1460 gbl_resolv_flags.mac_name = FALSE;
1461 gbl_resolv_flags.network_name = FALSE;
1462 gbl_resolv_flags.transport_name = FALSE;
1463 gbl_resolv_flags.concurrent_dns = FALSE;
1465 case 'N': /* Select what types of addresses/port #s to resolve */
1466 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1467 if (badopt != '\0') {
1468 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1470 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1471 "\t'm' to enable MAC address resolution\n"
1472 "\t'n' to enable network address resolution\n"
1473 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1474 "\t for network address resolution\n"
1475 "\t't' to enable transport-layer port number resolution");
1479 case 'o': /* Override preference from command line */
1480 switch (prefs_set_pref(optarg)) {
1485 case PREFS_SET_SYNTAX_ERR:
1486 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1490 case PREFS_SET_NO_SUCH_PREF:
1491 case PREFS_SET_OBSOLETE:
1492 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1497 case 'q': /* Quiet */
1500 case 'Q': /* Really quiet */
1502 really_quiet = TRUE;
1504 case 'r': /* Read capture file x */
1505 cf_name = g_strdup(optarg);
1507 case 'R': /* Read file filter */
1511 /* already processed; just ignore it now */
1513 case 'S': /* Set the line Separator to be printed between packets */
1516 case 't': /* Time stamp type */
1517 if (strcmp(optarg, "r") == 0)
1518 timestamp_set_type(TS_RELATIVE);
1519 else if (strcmp(optarg, "a") == 0)
1520 timestamp_set_type(TS_ABSOLUTE);
1521 else if (strcmp(optarg, "ad") == 0)
1522 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1523 else if (strcmp(optarg, "adoy") == 0)
1524 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1525 else if (strcmp(optarg, "d") == 0)
1526 timestamp_set_type(TS_DELTA);
1527 else if (strcmp(optarg, "dd") == 0)
1528 timestamp_set_type(TS_DELTA_DIS);
1529 else if (strcmp(optarg, "e") == 0)
1530 timestamp_set_type(TS_EPOCH);
1531 else if (strcmp(optarg, "u") == 0)
1532 timestamp_set_type(TS_UTC);
1533 else if (strcmp(optarg, "ud") == 0)
1534 timestamp_set_type(TS_UTC_WITH_YMD);
1535 else if (strcmp(optarg, "udoy") == 0)
1536 timestamp_set_type(TS_UTC_WITH_YDOY);
1538 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1539 cmdarg_err_cont("\t\"a\" for absolute\n"
1540 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1541 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1542 "\t\"d\" for delta\n"
1543 "\t\"dd\" for delta displayed\n"
1544 "\t\"e\" for epoch\n"
1545 "\t\"r\" for relative\n"
1546 "\t\"u\" for absolute UTC\n"
1547 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1548 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1552 case 'T': /* printing Type */
1553 print_packet_info = TRUE;
1554 if (strcmp(optarg, "text") == 0) {
1555 output_action = WRITE_TEXT;
1556 print_format = PR_FMT_TEXT;
1557 } else if (strcmp(optarg, "ps") == 0) {
1558 output_action = WRITE_TEXT;
1559 print_format = PR_FMT_PS;
1560 } else if (strcmp(optarg, "pdml") == 0) {
1561 output_action = WRITE_XML;
1562 print_details = TRUE; /* Need details */
1563 print_summary = FALSE; /* Don't allow summary */
1564 } else if (strcmp(optarg, "psml") == 0) {
1565 output_action = WRITE_XML;
1566 print_details = FALSE; /* Don't allow details */
1567 print_summary = TRUE; /* Need summary */
1568 } else if (strcmp(optarg, "fields") == 0) {
1569 output_action = WRITE_FIELDS;
1570 print_details = TRUE; /* Need full tree info */
1571 print_summary = FALSE; /* Don't allow summary */
1573 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1574 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1575 "\t specified by the -E option.\n"
1576 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1577 "\t details of a decoded packet. This information is equivalent to\n"
1578 "\t the packet details printed with the -V flag.\n"
1579 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1580 "\t the packets, or a multi-line view of the details of each of\n"
1581 "\t the packets, depending on whether the -V flag was specified.\n"
1582 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1583 "\t summary information of a decoded packet. This information is\n"
1584 "\t equivalent to the information shown in the one-line summary\n"
1585 "\t printed by default.\n"
1586 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1587 "\t packets, or a multi-line view of the details of each of the\n"
1588 "\t packets, depending on whether the -V flag was specified.\n"
1589 "\t This is the default.");
1593 case 'u': /* Seconds type */
1594 if (strcmp(optarg, "s") == 0)
1595 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1596 else if (strcmp(optarg, "hms") == 0)
1597 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1599 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1600 cmdarg_err_cont("\t\"s\" for seconds\n"
1601 "\t\"hms\" for hours, minutes and seconds");
1605 case 'v': /* Show version and exit */
1607 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1608 g_string_free(comp_info_str, TRUE);
1609 g_string_free(runtime_info_str, TRUE);
1610 /* We don't really have to cleanup here, but it's a convenient way to test
1611 * start-up and shut-down of the epan library without any UI-specific
1612 * cruft getting in the way. Makes the results of running
1613 * $ ./tools/valgrind-wireshark -n
1614 * much more useful. */
1618 case 'O': /* Only output these protocols */
1619 /* already processed; just ignore it now */
1621 case 'V': /* Verbose */
1622 /* already processed; just ignore it now */
1624 case 'x': /* Print packet data in hex (and ASCII) */
1625 /* already processed; just ignore it now */
1633 /* We won't call the init function for the stat this soon
1634 as it would disallow MATE's fields (which are registered
1635 by the preferences set callback) from being used as
1636 part of a tap filter. Instead, we just add the argument
1637 to a list of stat arguments. */
1638 if (strcmp("help", optarg) == 0) {
1639 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1640 list_stat_cmd_args();
1643 if (!process_stat_cmd_arg(optarg)) {
1644 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1645 list_stat_cmd_args();
1650 case '?': /* Bad flag - print usage message */
1653 list_capture_types();
1656 print_usage(stderr);
1663 /* If we specified output fields, but not the output field type... */
1664 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1665 cmdarg_err("Output fields were specified with \"-e\", "
1666 "but \"-Tfields\" was not specified.");
1668 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1669 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1670 "specified with \"-e\".");
1675 /* If no capture filter or display filter has been specified, and there are
1676 still command-line arguments, treat them as the tokens of a capture
1677 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1678 flag was specified. */
1679 if (optind < argc) {
1680 if (cf_name != NULL) {
1681 if (dfilter != NULL) {
1682 cmdarg_err("Display filters were specified both with \"-d\" "
1683 "and with additional command-line arguments.");
1686 dfilter = get_args_as_string(argc, argv, optind);
1691 if (global_capture_opts.default_options.cfilter) {
1692 cmdarg_err("A default capture filter was specified both with \"-f\""
1693 " and with additional command-line arguments.");
1696 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1697 interface_options interface_opts;
1698 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1699 if (interface_opts.cfilter == NULL) {
1700 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1701 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1702 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1704 cmdarg_err("A capture filter was specified both with \"-f\""
1705 " and with additional command-line arguments.");
1709 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1711 capture_option_specified = TRUE;
1717 if (!global_capture_opts.saving_to_file) {
1718 /* We're not saving the capture to a file; if "-q" wasn't specified,
1719 we should print packet information */
1721 print_packet_info = TRUE;
1723 /* We're saving to a file; if we're writing to the standard output.
1724 and we'll also be writing dissected packets to the standard
1725 output, reject the request. At best, we could redirect that
1726 to the standard error; we *can't* write both to the standard
1727 output and have either of them be useful. */
1728 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1729 cmdarg_err("You can't write both raw packet data and dissected packets"
1730 " to the standard output.");
1735 /* We're not saving the capture to a file; if "-q" wasn't specified,
1736 we should print packet information */
1738 print_packet_info = TRUE;
1741 #ifndef HAVE_LIBPCAP
1742 if (capture_option_specified)
1743 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1746 print_usage(stderr);
1751 if (output_action != WRITE_TEXT) {
1752 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1757 if (output_only != NULL) {
1760 if (!print_details) {
1761 cmdarg_err("-O requires -V");
1765 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1766 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1767 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1771 if (rfilter != NULL && !perform_two_pass_analysis) {
1772 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1777 if (list_link_layer_types) {
1778 /* We're supposed to list the link-layer types for an interface;
1779 did the user also specify a capture file to be read? */
1781 /* Yes - that's bogus. */
1782 cmdarg_err("You can't specify -L and a capture file to be read.");
1785 /* No - did they specify a ring buffer option? */
1786 if (global_capture_opts.multi_files_on) {
1787 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1793 * "-r" was specified, so we're reading a capture file.
1794 * Capture options don't apply here.
1797 /* We don't support capture filters when reading from a capture file
1798 (the BPF compiler doesn't support all link-layer types that we
1799 support in capture files we read). */
1800 if (global_capture_opts.default_options.cfilter) {
1801 cmdarg_err("Only read filters, not capture filters, "
1802 "can be specified when reading a capture file.");
1805 if (global_capture_opts.multi_files_on) {
1806 cmdarg_err("Multiple capture files requested, but "
1807 "a capture isn't being done.");
1810 if (global_capture_opts.has_file_duration) {
1811 cmdarg_err("Switching capture files after a time interval was specified, but "
1812 "a capture isn't being done.");
1815 if (global_capture_opts.has_ring_num_files) {
1816 cmdarg_err("A ring buffer of capture files was specified, but "
1817 "a capture isn't being done.");
1820 if (global_capture_opts.has_autostop_files) {
1821 cmdarg_err("A maximum number of capture files was specified, but "
1822 "a capture isn't being done.");
1825 if (global_capture_opts.capture_comment) {
1826 cmdarg_err("A capture comment was specified, but "
1827 "a capture isn't being done.\nThere's no support for adding "
1828 "a capture comment to an existing capture file.");
1832 /* Note: TShark now allows the restriction of a _read_ file by packet count
1833 * and byte count as well as a write file. Other autostop options remain valid
1834 * only for a write file.
1836 if (global_capture_opts.has_autostop_duration) {
1837 cmdarg_err("A maximum capture time was specified, but "
1838 "a capture isn't being done.");
1843 * "-r" wasn't specified, so we're doing a live capture.
1845 if (perform_two_pass_analysis) {
1846 /* Two-pass analysis doesn't work with live capture since it requires us
1847 * to buffer packets until we've read all of them, but a live capture
1848 * has no useful/meaningful definition of "all" */
1849 cmdarg_err("Live captures do not support two-pass analysis.");
1853 if (global_capture_opts.saving_to_file) {
1854 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1856 /* When capturing, we only support writing pcap or pcap-ng format. */
1857 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1858 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1859 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1862 if (global_capture_opts.capture_comment &&
1863 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1864 cmdarg_err("A capture comment can only be written to a pcapng file.");
1867 if (global_capture_opts.multi_files_on) {
1868 /* Multiple-file mode doesn't work under certain conditions:
1869 a) it doesn't work if you're writing to the standard output;
1870 b) it doesn't work if you're writing to a pipe;
1872 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1873 cmdarg_err("Multiple capture files requested, but "
1874 "the capture is being written to the standard output.");
1877 if (global_capture_opts.output_to_pipe) {
1878 cmdarg_err("Multiple capture files requested, but "
1879 "the capture file is a pipe.");
1882 if (!global_capture_opts.has_autostop_filesize &&
1883 !global_capture_opts.has_file_duration) {
1884 cmdarg_err("Multiple capture files requested, but "
1885 "no maximum capture file size or duration was specified.");
1889 /* Currently, we don't support read or display filters when capturing
1890 and saving the packets. */
1891 if (rfilter != NULL) {
1892 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1895 if (dfilter != NULL) {
1896 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1899 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1901 /* They didn't specify a "-w" flag, so we won't be saving to a
1902 capture file. Check for options that only make sense if
1903 we're saving to a file. */
1904 if (global_capture_opts.has_autostop_filesize) {
1905 cmdarg_err("Maximum capture file size specified, but "
1906 "capture isn't being saved to a file.");
1909 if (global_capture_opts.multi_files_on) {
1910 cmdarg_err("Multiple capture files requested, but "
1911 "the capture isn't being saved to a file.");
1914 if (global_capture_opts.capture_comment) {
1915 cmdarg_err("A capture comment was specified, but "
1916 "the capture isn't being saved to a file.");
1925 /* Start windows sockets */
1926 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1929 /* Notify all registered modules that have had any of their preferences
1930 changed either from one of the preferences file or from the command
1931 line that their preferences have changed. */
1934 /* At this point MATE will have registered its field array so we can
1935 have a tap filter with one of MATE's late-registered fields as part
1936 of the filter. We can now process all the "-z" arguments. */
1937 start_requested_stats();
1939 /* At this point MATE will have registered its field array so we can
1940 check if the fields specified by the user are all good.
1942 if (!output_fields_valid(output_fields)) {
1943 cmdarg_err("Some fields aren't valid");
1948 /* We currently don't support taps, or printing dissected packets,
1949 if we're writing to a pipe. */
1950 if (global_capture_opts.saving_to_file &&
1951 global_capture_opts.output_to_pipe) {
1952 if (tap_listeners_require_dissection()) {
1953 cmdarg_err("Taps aren't supported when saving to a pipe.");
1956 if (print_packet_info) {
1957 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1963 if (ex_opt_count("read_format") > 0) {
1964 const gchar* name = ex_opt_get_next("read_format");
1965 in_file_type = open_info_name_to_type(name);
1966 if (in_file_type == WTAP_TYPE_AUTO) {
1967 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1968 list_read_capture_types();
1973 /* disabled protocols as per configuration file */
1974 if (gdp_path == NULL && dp_path == NULL) {
1975 set_disabled_protos_list();
1978 /* Build the column format array */
1979 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1982 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1983 capture_opts_trim_ring_num_files(&global_capture_opts);
1986 if (rfilter != NULL) {
1987 if (!dfilter_compile(rfilter, &rfcode)) {
1988 cmdarg_err("%s", dfilter_error_msg);
1990 #ifdef HAVE_PCAP_OPEN_DEAD
1994 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1996 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1998 " Note: That read filter code looks like a valid capture filter;\n"
1999 " maybe you mixed them up?");
2008 cfile.rfcode = rfcode;
2010 if (dfilter != NULL) {
2011 if (!dfilter_compile(dfilter, &dfcode)) {
2012 cmdarg_err("%s", dfilter_error_msg);
2014 #ifdef HAVE_PCAP_OPEN_DEAD
2018 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2020 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
2022 " Note: That display filter code looks like a valid capture filter;\n"
2023 " maybe you mixed them up?");
2032 cfile.dfcode = dfcode;
2034 if (print_packet_info) {
2035 /* If we're printing as text or PostScript, we have
2036 to create a print stream. */
2037 if (output_action == WRITE_TEXT) {
2038 switch (print_format) {
2041 print_stream = print_stream_text_stdio_new(stdout);
2045 print_stream = print_stream_ps_stdio_new(stdout);
2049 g_assert_not_reached();
2054 /* We have to dissect each packet if:
2056 we're printing information about each packet;
2058 we're using a read filter on the packets;
2060 we're using a display filter on the packets;
2062 we're using any taps that need dissection. */
2063 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2067 * We're reading a capture file.
2069 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2074 /* Process the packets in the file */
2077 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2078 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2079 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2081 err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2084 CATCH(OutOfMemoryError) {
2088 "Sorry, but TShark has to terminate now.\n"
2090 "More information and workarounds can be found at\n"
2091 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2096 /* We still dump out the results of taps, etc., as we might have
2097 read some packets; however, we exit with an error status. */
2101 /* No capture file specified, so we're supposed to do a live capture
2102 or get a list of link-layer types for a live capture device;
2103 do we have support for live captures? */
2105 /* if no interface was specified, pick a default */
2106 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2107 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2108 if (exit_status != 0)
2111 /* if requested, list the link layer types and exit */
2112 if (list_link_layer_types) {
2115 /* Get the list of link-layer types for the capture devices. */
2116 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2117 interface_options interface_opts;
2118 if_capabilities_t *caps;
2120 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2121 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2123 cmdarg_err("%s", err_str);
2127 if (caps->data_link_types == NULL) {
2128 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2131 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2132 free_if_capabilities(caps);
2138 * If the standard error isn't a terminal, don't print packet counts,
2139 * as they won't show up on the user's terminal and they'll get in
2140 * the way of error messages in the file (to which we assume the
2141 * standard error was redirected; if it's redirected to the null
2142 * device, there's no point in printing packet counts anyway).
2144 * Otherwise, if we're printing packet information and the standard
2145 * output is a terminal (which we assume means the standard output and
2146 * error are going to the same terminal), don't print packet counts,
2147 * as they'll get in the way of the packet information.
2149 * Otherwise, if the user specified -q, don't print packet counts.
2151 * Otherwise, print packet counts.
2153 * XXX - what if the user wants to do a live capture, doesn't want
2154 * to save it to a file, doesn't want information printed for each
2155 * packet, does want some "-z" statistic, and wants packet counts
2156 * so they know whether they're seeing any packets? -q will
2157 * suppress the information printed for each packet, but it'll
2158 * also suppress the packet counts.
2160 if (!isatty(fileno(stderr)))
2161 print_packet_counts = FALSE;
2162 else if (print_packet_info && isatty(fileno(stdout)))
2163 print_packet_counts = FALSE;
2165 print_packet_counts = FALSE;
2167 print_packet_counts = TRUE;
2169 if (print_packet_info) {
2170 if (!write_preamble(&cfile)) {
2171 show_print_file_io_error(errno);
2177 * XXX - this returns FALSE if an error occurred, but it also
2178 * returns FALSE if the capture stops because a time limit
2179 * was reached (and possibly other limits), so we can't assume
2180 * it means an error.
2182 * The capture code is a bit twisty, so it doesn't appear to
2183 * be an easy fix. We just ignore the return value for now.
2184 * Instead, pass on the exit status from the capture child.
2187 exit_status = global_capture_session.fork_child_status;
2189 if (print_packet_info) {
2190 if (!write_finale()) {
2192 show_print_file_io_error(err);
2196 /* No - complain. */
2197 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2204 if (cfile.frames != NULL) {
2205 free_frame_data_sequence(cfile.frames);
2206 cfile.frames = NULL;
2209 draw_tap_listeners(TRUE);
2210 funnel_dump_all_text_windows();
2211 epan_free(cfile.epan);
2214 output_fields_free(output_fields);
2215 output_fields = NULL;
2220 /*#define USE_BROKEN_G_MAIN_LOOP*/
2222 #ifdef USE_BROKEN_G_MAIN_LOOP
2225 gboolean loop_running = FALSE;
2227 guint32 packet_count = 0;
2230 typedef struct pipe_input_tag {
2234 pipe_input_cb_t input_cb;
2235 guint pipe_input_id;
2237 GMutex *callback_running;
2241 static pipe_input_t pipe_input;
2244 /* The timer has expired, see if there's stuff to read from the pipe,
2245 if so, do the callback */
2247 pipe_timer_cb(gpointer data)
2253 pipe_input_t *pipe_input_p = data;
2254 gint iterations = 0;
2256 g_mutex_lock (pipe_input_p->callback_running);
2258 /* try to read data from the pipe only 5 times, to avoid blocking */
2259 while(iterations < 5) {
2260 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2262 /* Oddly enough although Named pipes don't work on win9x,
2263 PeekNamedPipe does !!! */
2264 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2265 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2267 /* Get the child process exit status */
2268 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2271 /* If the Peek returned an error, or there are bytes to be read
2272 or the childwatcher thread has terminated then call the normal
2274 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2276 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2278 /* And call the real handler */
2279 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2280 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2281 /* pipe closed, return false so that the timer is stopped */
2282 g_mutex_unlock (pipe_input_p->callback_running);
2287 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2288 /* No data, stop now */
2295 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2297 g_mutex_unlock (pipe_input_p->callback_running);
2299 /* we didn't stopped the timer, so let it run */
2306 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2309 pipe_input.source = source;
2310 pipe_input.child_process = child_process;
2311 pipe_input.user_data = user_data;
2312 pipe_input.input_cb = input_cb;
2315 #if GLIB_CHECK_VERSION(2,31,0)
2316 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2317 g_mutex_init(pipe_input.callback_running);
2319 pipe_input.callback_running = g_mutex_new();
2321 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2322 do this but that doesn't cover all win32 platforms. GTK can do
2323 this but doesn't seem to work over processes. Attempt to do
2324 something similar here, start a timer and check for data on every
2326 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2327 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2331 static const nstime_t *
2332 tshark_get_frame_ts(void *data, guint32 frame_num)
2334 capture_file *cf = (capture_file *) data;
2336 if (ref && ref->num == frame_num)
2337 return &ref->abs_ts;
2339 if (prev_dis && prev_dis->num == frame_num)
2340 return &prev_dis->abs_ts;
2342 if (prev_cap && prev_cap->num == frame_num)
2343 return &prev_cap->abs_ts;
2346 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2348 return (fd) ? &fd->abs_ts : NULL;
2355 tshark_epan_new(capture_file *cf)
2357 epan_t *epan = epan_new();
2360 epan->get_frame_ts = tshark_get_frame_ts;
2361 epan->get_interface_name = cap_file_get_interface_name;
2362 epan->get_user_comment = NULL;
2373 GString *str = g_string_new("");
2374 #ifdef USE_TSHARK_SELECT
2378 struct sigaction action, oldaction;
2381 /* Create new dissection section. */
2382 epan_free(cfile.epan);
2383 cfile.epan = tshark_epan_new(&cfile);
2386 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2387 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2389 /* Catch SIGINT and SIGTERM and, if we get either of them,
2390 clean up and exit. If SIGHUP isn't being ignored, catch
2391 it too and, if we get it, clean up and exit.
2393 We restart any read that was in progress, so that it doesn't
2394 disrupt reading from the sync pipe. The signal handler tells
2395 the capture child to finish; it will report that it finished,
2396 or will exit abnormally, so we'll stop reading from the sync
2397 pipe, pick up the exit status, and quit. */
2398 memset(&action, 0, sizeof(action));
2399 action.sa_handler = capture_cleanup;
2400 action.sa_flags = SA_RESTART;
2401 sigemptyset(&action.sa_mask);
2402 sigaction(SIGTERM, &action, NULL);
2403 sigaction(SIGINT, &action, NULL);
2404 sigaction(SIGHUP, NULL, &oldaction);
2405 if (oldaction.sa_handler == SIG_DFL)
2406 sigaction(SIGHUP, &action, NULL);
2409 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2410 quiet mode, report the number of packets we've captured.
2412 Again, restart any read that was in progress, so that it doesn't
2413 disrupt reading from the sync pipe. */
2414 action.sa_handler = report_counts_siginfo;
2415 action.sa_flags = SA_RESTART;
2416 sigemptyset(&action.sa_mask);
2417 sigaction(SIGINFO, &action, NULL);
2418 #endif /* SIGINFO */
2421 global_capture_session.state = CAPTURE_PREPARING;
2423 /* Let the user know which interfaces were chosen. */
2424 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2425 interface_options interface_opts;
2427 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2428 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2429 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2430 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2433 if (global_capture_opts.ifaces->len < 2)
2435 if (global_capture_opts.ifaces->len < 4)
2438 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2439 interface_options interface_opts;
2441 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2443 if (global_capture_opts.ifaces->len > 2) {
2444 g_string_append_printf(str, ",");
2446 g_string_append_printf(str, " ");
2447 if (i == global_capture_opts.ifaces->len - 1) {
2448 g_string_append_printf(str, "and ");
2451 g_string_append_printf(str, "'%s'", interface_opts.descr);
2454 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2456 if (really_quiet == FALSE)
2457 fprintf(stderr, "Capturing on %s\n", str->str);
2459 g_string_free(str, TRUE);
2461 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2466 /* the actual capture loop
2468 * XXX - glib doesn't seem to provide any event based loop handling.
2470 * XXX - for whatever reason,
2471 * calling g_main_loop_new() ends up in 100% cpu load.
2473 * But that doesn't matter: in UNIX we can use select() to find an input
2474 * source with something to do.
2476 * But that doesn't matter because we're in a CLI (that doesn't need to
2477 * update a GUI or something at the same time) so it's OK if we block
2478 * trying to read from the pipe.
2480 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2481 * wrong (but I leave it there in case I am...).
2484 #ifdef USE_TSHARK_SELECT
2486 FD_SET(pipe_input.source, &readfds);
2489 loop_running = TRUE;
2493 while (loop_running)
2495 #ifdef USE_TSHARK_SELECT
2496 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2500 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2502 } else if (ret == 1) {
2504 /* Call the real handler */
2505 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2506 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2509 #ifdef USE_TSHARK_SELECT
2514 CATCH(OutOfMemoryError) {
2518 "Sorry, but TShark has to terminate now.\n"
2520 "More information and workarounds can be found at\n"
2521 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2528 /* capture child detected an error */
2530 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2532 cmdarg_err("%s", error_msg);
2533 cmdarg_err_cont("%s", secondary_error_msg);
2537 /* capture child detected an capture filter related error */
2539 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2541 capture_options *capture_opts = cap_session->capture_opts;
2542 dfilter_t *rfcode = NULL;
2543 interface_options interface_opts;
2545 g_assert(i < capture_opts->ifaces->len);
2546 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2548 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2550 "Invalid capture filter \"%s\" for interface '%s'.\n"
2552 "That string looks like a valid display filter; however, it isn't a valid\n"
2553 "capture filter (%s).\n"
2555 "Note that display filters and capture filters don't have the same syntax,\n"
2556 "so you can't use most display filter expressions as capture filters.\n"
2558 "See the User's Guide for a description of the capture filter syntax.",
2559 interface_opts.cfilter, interface_opts.descr, error_message);
2560 dfilter_free(rfcode);
2563 "Invalid capture filter \"%s\" for interface '%s'.\n"
2565 "That string isn't a valid capture filter (%s).\n"
2566 "See the User's Guide for a description of the capture filter syntax.",
2567 interface_opts.cfilter, interface_opts.descr, error_message);
2572 /* capture child tells us we have a new (or the first) capture file */
2574 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2576 capture_options *capture_opts = cap_session->capture_opts;
2577 capture_file *cf = (capture_file *) cap_session->cf;
2578 gboolean is_tempfile;
2581 if (cap_session->state == CAPTURE_PREPARING) {
2582 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2584 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2586 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2588 /* free the old filename */
2589 if (capture_opts->save_file != NULL) {
2591 /* we start a new capture file, close the old one (if we had one before) */
2592 if (cf->state != FILE_CLOSED) {
2593 if (cf->wth != NULL) {
2594 wtap_close(cf->wth);
2597 cf->state = FILE_CLOSED;
2600 g_free(capture_opts->save_file);
2601 is_tempfile = FALSE;
2603 epan_free(cf->epan);
2604 cf->epan = tshark_epan_new(cf);
2606 /* we didn't had a save_file before, must be a tempfile */
2610 /* save the new filename */
2611 capture_opts->save_file = g_strdup(new_file);
2613 /* if we are in real-time mode, open the new file now */
2614 if (do_dissection) {
2615 /* this is probably unecessary, but better safe than sorry */
2616 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2617 /* Attempt to open the capture file and set up to read from it. */
2618 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2622 /* Don't unlink (delete) the save file - leave it around,
2623 for debugging purposes. */
2624 g_free(capture_opts->save_file);
2625 capture_opts->save_file = NULL;
2630 cap_session->state = CAPTURE_RUNNING;
2636 /* capture child tells us we have new packets to read */
2638 capture_input_new_packets(capture_session *cap_session, int to_read)
2644 capture_file *cf = (capture_file *)cap_session->cf;
2645 gboolean filtering_tap_listeners;
2650 * Prevent a SIGINFO handler from writing to the standard error while
2651 * we're doing so or writing to the standard output; instead, have it
2652 * just set a flag telling us to print that information when we're done.
2655 #endif /* SIGINFO */
2657 /* Do we have any tap listeners with filters? */
2658 filtering_tap_listeners = have_filtering_tap_listeners();
2660 /* Get the union of the flags for all tap listeners. */
2661 tap_flags = union_of_tap_listener_flags();
2663 if (do_dissection) {
2664 gboolean create_proto_tree;
2665 epan_dissect_t *edt;
2667 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2668 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2669 create_proto_tree = TRUE;
2671 create_proto_tree = FALSE;
2673 /* The protocol tree will be "visible", i.e., printed, only if we're
2674 printing packet details, which is true if we're printing stuff
2675 ("print_packet_info" is true) and we're in verbose mode
2676 ("packet_details" is true). */
2677 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2679 while (to_read-- && cf->wth) {
2680 wtap_cleareof(cf->wth);
2681 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2683 /* read from file failed, tell the capture child to stop */
2684 sync_pipe_stop(cap_session);
2685 wtap_close(cf->wth);
2688 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2689 wtap_buf_ptr(cf->wth),
2693 /* packet successfully read and gone through the "Read Filter" */
2698 epan_dissect_free(edt);
2702 * Dumpcap's doing all the work; we're not doing any dissection.
2703 * Count all the packets it wrote.
2705 packet_count += to_read;
2708 if (print_packet_counts) {
2709 /* We're printing packet counts. */
2710 if (packet_count != 0) {
2711 fprintf(stderr, "\r%u ", packet_count);
2712 /* stderr could be line buffered */
2719 * Allow SIGINFO handlers to write.
2724 * If a SIGINFO handler asked us to write out capture counts, do so.
2728 #endif /* SIGINFO */
2734 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2735 /* Report the count only if we aren't printing a packet count
2736 as packets arrive. */
2737 fprintf(stderr, "%u packet%s captured\n", packet_count,
2738 plurality(packet_count, "", "s"));
2741 infoprint = FALSE; /* we just reported it */
2742 #endif /* SIGINFO */
2747 report_counts_siginfo(int signum _U_)
2749 int sav_errno = errno;
2750 /* If we've been told to delay printing, just set a flag asking
2751 that we print counts (if we're supposed to), otherwise print
2752 the count of packets captured (if we're supposed to). */
2759 #endif /* SIGINFO */
2762 /* capture child detected any packet drops? */
2764 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2766 if (print_packet_counts) {
2767 /* We're printing packet counts to stderr.
2768 Send a newline so that we move to the line after the packet count. */
2769 fprintf(stderr, "\n");
2773 /* We're printing packet counts to stderr.
2774 Send a newline so that we move to the line after the packet count. */
2775 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2781 * Capture child closed its side of the pipe, report any error and
2782 * do the required cleanup.
2785 capture_input_closed(capture_session *cap_session, gchar *msg)
2787 capture_file *cf = (capture_file *) cap_session->cf;
2790 fprintf(stderr, "tshark: %s\n", msg);
2794 if (cf != NULL && cf->wth != NULL) {
2795 wtap_close(cf->wth);
2796 if (cf->is_tempfile) {
2797 ws_unlink(cf->filename);
2800 #ifdef USE_BROKEN_G_MAIN_LOOP
2801 /*g_main_loop_quit(loop);*/
2802 g_main_loop_quit(loop);
2804 loop_running = FALSE;
2813 capture_cleanup(DWORD ctrltype _U_)
2815 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2816 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2817 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2818 like SIGTERM at least when the machine's shutting down.
2820 For now, we handle them all as indications that we should clean up
2821 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2824 We must return TRUE so that no other handler - such as one that would
2825 terminate the process - gets called.
2827 XXX - for some reason, typing ^C to TShark, if you run this in
2828 a Cygwin console window in at least some versions of Cygwin,
2829 causes TShark to terminate immediately; this routine gets
2830 called, but the main loop doesn't get a chance to run and
2831 exit cleanly, at least if this is compiled with Microsoft Visual
2832 C++ (i.e., it's a property of the Cygwin console window or Bash;
2833 it happens if TShark is not built with Cygwin - for all I know,
2834 building it with Cygwin may make the problem go away). */
2836 /* tell the capture child to stop */
2837 sync_pipe_stop(&global_capture_session);
2839 /* don't stop our own loop already here, otherwise status messages and
2840 * cleanup wouldn't be done properly. The child will indicate the stop of
2841 * everything by calling capture_input_closed() later */
2847 capture_cleanup(int signum _U_)
2849 /* tell the capture child to stop */
2850 sync_pipe_stop(&global_capture_session);
2852 /* don't stop our own loop already here, otherwise status messages and
2853 * cleanup wouldn't be done properly. The child will indicate the stop of
2854 * everything by calling capture_input_closed() later */
2857 #endif /* HAVE_LIBPCAP */
2860 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2861 gint64 offset, struct wtap_pkthdr *whdr,
2868 /* The frame number of this packet is one more than the count of
2869 frames in this packet. */
2870 framenum = cf->count + 1;
2872 /* If we're not running a display filter and we're not printing any
2873 packet information, we don't need to do a dissection. This means
2874 that all packets can be marked as 'passed'. */
2877 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2879 /* If we're going to print packet information, or we're going to
2880 run a read filter, or display filter, or we're going to process taps, set up to
2881 do a dissection and do so. */
2883 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2884 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2885 /* Grab any resolved addresses */
2886 host_name_lookup_process();
2888 /* If we're running a read filter, prime the epan_dissect_t with that
2891 epan_dissect_prime_dfilter(edt, cf->rfcode);
2894 epan_dissect_prime_dfilter(edt, cf->dfcode);
2896 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2898 if (ref == &fdlocal) {
2899 ref_frame = fdlocal;
2903 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2905 /* Run the read filter if we have one. */
2907 passed = dfilter_apply_edt(cf->rfcode, edt);
2911 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2912 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2914 /* If we're not doing dissection then there won't be any dependent frames.
2915 * More importantly, edt.pi.dependent_frames won't be initialized because
2916 * epan hasn't been initialized.
2917 * if we *are* doing dissection, then mark the dependent frames, but only
2918 * if a display filter was given and it matches this packet.
2920 if (edt && cf->dfcode) {
2921 if (dfilter_apply_edt(cf->dfcode, edt)) {
2922 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2928 /* if we don't add it to the frame_data_sequence, clean it up right now
2930 frame_data_destroy(&fdlocal);
2934 epan_dissect_reset(edt);
2940 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2941 struct wtap_pkthdr *phdr, Buffer *buf,
2947 /* If we're not running a display filter and we're not printing any
2948 packet information, we don't need to do a dissection. This means
2949 that all packets can be marked as 'passed'. */
2952 /* If we're going to print packet information, or we're going to
2953 run a read filter, or we're going to process taps, set up to
2954 do a dissection and do so. */
2956 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2957 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2958 /* Grab any resolved addresses */
2959 host_name_lookup_process();
2961 /* If we're running a display filter, prime the epan_dissect_t with that
2964 epan_dissect_prime_dfilter(edt, cf->dfcode);
2966 col_custom_prime_edt(edt, &cf->cinfo);
2968 /* We only need the columns if either
2969 1) some tap needs the columns
2971 2) we're printing packet info but we're *not* verbose; in verbose
2972 mode, we print the protocol tree, not the protocol summary.
2974 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2979 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2986 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2988 /* Run the read/display filter if we have one. */
2990 passed = dfilter_apply_edt(cf->dfcode, edt);
2994 frame_data_set_after_dissect(fdata, &cum_bytes);
2995 /* Process this packet. */
2996 if (print_packet_info) {
2997 /* We're printing packet information; print the information for
2999 print_packet(cf, edt);
3001 /* The ANSI C standard does not appear to *require* that a line-buffered
3002 stream be flushed to the host environment whenever a newline is
3003 written, it just says that, on such a stream, characters "are
3004 intended to be transmitted to or from the host environment as a
3005 block when a new-line character is encountered".
3007 The Visual C++ 6.0 C implementation doesn't do what is intended;
3008 even if you set a stream to be line-buffered, it still doesn't
3009 flush the buffer at the end of every line.
3011 So, if the "-l" flag was specified, we flush the standard output
3012 at the end of a packet. This will do the right thing if we're
3013 printing packet summary lines, and, as we print the entire protocol
3014 tree for a single packet without waiting for anything to happen,
3015 it should be as good as line-buffered mode if we're printing
3016 protocol trees. (The whole reason for the "-l" flag in either
3017 tcpdump or TShark is to allow the output of a live capture to
3018 be piped to a program or script and to have that script see the
3019 information for the packet as soon as it's printed, rather than
3020 having to wait until a standard I/O buffer fills up. */
3024 if (ferror(stdout)) {
3025 show_print_file_io_error(errno);
3034 epan_dissect_reset(edt);
3036 return passed || fdata->flags.dependent_of_displayed;
3040 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3041 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3044 int snapshot_length;
3048 gchar *err_info = NULL;
3050 char *save_file_string = NULL;
3051 gboolean filtering_tap_listeners;
3053 wtapng_section_t *shb_hdr;
3054 wtapng_iface_descriptions_t *idb_inf;
3056 struct wtap_pkthdr phdr;
3058 epan_dissect_t *edt = NULL;
3060 wtap_phdr_init(&phdr);
3062 shb_hdr = wtap_file_get_shb_info(cf->wth);
3063 idb_inf = wtap_file_get_idb_info(cf->wth);
3064 #ifdef PCAP_NG_DEFAULT
3065 if (idb_inf->interface_data->len > 1) {
3066 linktype = WTAP_ENCAP_PER_PACKET;
3068 linktype = wtap_file_encap(cf->wth);
3071 linktype = wtap_file_encap(cf->wth);
3073 if (save_file != NULL) {
3074 /* Get a string that describes what we're writing to */
3075 save_file_string = output_file_description(save_file);
3077 /* Set up to write to the capture file. */
3078 snapshot_length = wtap_snapshot_length(cf->wth);
3079 if (snapshot_length == 0) {
3080 /* Snapshot length of input file not known. */
3081 snapshot_length = WTAP_MAX_PACKET_SIZE;
3083 /* If we don't have an application name add Tshark */
3084 if (shb_hdr->shb_user_appl == NULL) {
3085 g_snprintf(appname, sizeof(appname), "TShark (Wireshark) %s", get_ws_vcs_version_info());
3086 shb_hdr->shb_user_appl = appname;
3089 if (linktype != WTAP_ENCAP_PER_PACKET &&
3090 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3091 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3092 snapshot_length, FALSE /* compressed */, &err);
3094 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3095 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3101 /* We couldn't set up to write to the capture file. */
3104 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
3105 cmdarg_err("Capture files can't be written in that format.");
3108 case WTAP_ERR_UNWRITABLE_ENCAP:
3109 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3110 cmdarg_err("The capture file being read can't be written as a "
3111 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3114 case WTAP_ERR_CANT_OPEN:
3115 cmdarg_err("The %s couldn't be created for some "
3116 "unknown reason.", save_file_string);
3119 case WTAP_ERR_SHORT_WRITE:
3120 cmdarg_err("A full header couldn't be written to the %s.",
3125 cmdarg_err("The %s could not be created: %s.", save_file_string,
3126 wtap_strerror(err));
3132 if (print_packet_info) {
3133 if (!write_preamble(cf)) {
3135 show_print_file_io_error(err);
3144 /* Do we have any tap listeners with filters? */
3145 filtering_tap_listeners = have_filtering_tap_listeners();
3147 /* Get the union of the flags for all tap listeners. */
3148 tap_flags = union_of_tap_listener_flags();
3150 if (perform_two_pass_analysis) {
3153 /* Allocate a frame_data_sequence for all the frames. */
3154 cf->frames = new_frame_data_sequence();
3156 if (do_dissection) {
3157 gboolean create_proto_tree = FALSE;
3159 /* If we're going to be applying a filter, we'll need to
3160 create a protocol tree against which to apply the filter. */
3161 if (cf->rfcode || cf->dfcode)
3162 create_proto_tree = TRUE;
3164 /* We're not going to display the protocol tree on this pass,
3165 so it's not going to be "visible". */
3166 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3169 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3170 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3171 wtap_buf_ptr(cf->wth))) {
3172 /* Stop reading if we have the maximum number of packets;
3173 * When the -c option has not been used, max_packet_count
3174 * starts at 0, which practically means, never stop reading.
3175 * (unless we roll over max_packet_count ?)
3177 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3178 err = 0; /* This is not an error */
3185 epan_dissect_free(edt);
3189 /* Close the sequential I/O side, to free up memory it requires. */
3190 wtap_sequential_close(cf->wth);
3192 /* Allow the protocol dissectors to free up memory that they
3193 * don't need after the sequential run-through of the packets. */
3194 postseq_cleanup_all_protocols();
3198 ws_buffer_init(&buf, 1500);
3200 if (do_dissection) {
3201 gboolean create_proto_tree;
3203 if (cf->dfcode || print_details || filtering_tap_listeners ||
3204 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3205 create_proto_tree = TRUE;
3207 create_proto_tree = FALSE;
3209 /* The protocol tree will be "visible", i.e., printed, only if we're
3210 printing packet details, which is true if we're printing stuff
3211 ("print_packet_info" is true) and we're in verbose mode
3212 ("packet_details" is true). */
3213 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3216 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3217 fdata = frame_data_sequence_find(cf->frames, framenum);
3218 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3220 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3222 /* Either there's no read filtering or this packet passed the
3223 filter, so, if we're writing to a capture file, write
3226 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3227 /* Error writing to a capture file */
3230 case WTAP_ERR_UNWRITABLE_ENCAP:
3232 * This is a problem with the particular frame we're writing
3233 * and the file type and subtype we're writing; note that,
3234 * and report the frame number and file type/subtype.
3236 * XXX - framenum is not necessarily the frame number in
3237 * the input file if there was a read filter.
3240 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3241 framenum, cf->filename,
3242 wtap_file_type_subtype_short_string(out_file_type));
3245 case WTAP_ERR_PACKET_TOO_LARGE:
3247 * This is a problem with the particular frame we're writing
3248 * and the file type and subtype we're writing; note that,
3249 * and report the frame number and file type/subtype.
3251 * XXX - framenum is not necessarily the frame number in
3252 * the input file if there was a read filter.
3255 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3256 framenum, cf->filename,
3257 wtap_file_type_subtype_short_string(out_file_type));
3260 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3262 * This is a problem with the particular record we're writing
3263 * and the file type and subtype we're writing; note that,
3264 * and report the record number and file type/subtype.
3266 * XXX - framenum is not necessarily the record number in
3267 * the input file if there was a read filter.
3270 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3271 framenum, cf->filename,
3272 wtap_file_type_subtype_short_string(out_file_type));
3275 case WTAP_ERR_UNWRITABLE_REC_DATA:
3277 * This is a problem with the particular record we're writing
3278 * and the file type and subtype we're writing; note that,
3279 * and report the record number and file type/subtype.
3281 * XXX - framenum is not necessarily the record number in
3282 * the input file if there was a read filter.
3285 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3286 framenum, cf->filename,
3287 wtap_file_type_subtype_short_string(out_file_type),
3288 err_info != NULL ? err_info : "no information supplied");
3293 show_capture_file_io_error(save_file, err, FALSE);
3296 wtap_dump_close(pdh, &err);
3306 epan_dissect_free(edt);
3310 ws_buffer_free(&buf);
3315 if (do_dissection) {
3316 gboolean create_proto_tree;
3318 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3319 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3320 create_proto_tree = TRUE;
3322 create_proto_tree = FALSE;
3324 /* The protocol tree will be "visible", i.e., printed, only if we're
3325 printing packet details, which is true if we're printing stuff
3326 ("print_packet_info" is true) and we're in verbose mode
3327 ("packet_details" is true). */
3328 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3331 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3334 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3335 wtap_buf_ptr(cf->wth),
3337 /* Either there's no read filtering or this packet passed the
3338 filter, so, if we're writing to a capture file, write
3341 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3342 /* Error writing to a capture file */
3345 case WTAP_ERR_UNWRITABLE_ENCAP:
3347 * This is a problem with the particular frame we're writing
3348 * and the file type and subtype we're writing; note that,
3349 * and report the frame number and file type/subtype.
3352 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3353 framenum, cf->filename,
3354 wtap_file_type_subtype_short_string(out_file_type));
3357 case WTAP_ERR_PACKET_TOO_LARGE:
3359 * This is a problem with the particular frame we're writing
3360 * and the file type and subtype we're writing; note that,
3361 * and report the frame number and file type/subtype.
3364 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3365 framenum, cf->filename,
3366 wtap_file_type_subtype_short_string(out_file_type));
3369 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3371 * This is a problem with the particular record we're writing
3372 * and the file type and subtype we're writing; note that,
3373 * and report the record number and file type/subtype.
3376 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3377 framenum, cf->filename,
3378 wtap_file_type_subtype_short_string(out_file_type));
3381 case WTAP_ERR_UNWRITABLE_REC_DATA:
3383 * This is a problem with the particular record we're writing
3384 * and the file type and subtype we're writing; note that,
3385 * and report the record number and file type/subtype.
3388 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3389 framenum, cf->filename,
3390 wtap_file_type_subtype_short_string(out_file_type),
3391 err_info != NULL ? err_info : "no information supplied");
3396 show_capture_file_io_error(save_file, err, FALSE);
3399 wtap_dump_close(pdh, &err);
3405 /* Stop reading if we have the maximum number of packets;
3406 * When the -c option has not been used, max_packet_count
3407 * starts at 0, which practically means, never stop reading.
3408 * (unless we roll over max_packet_count ?)
3410 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3411 err = 0; /* This is not an error */
3417 epan_dissect_free(edt);
3422 wtap_phdr_cleanup(&phdr);
3426 * Print a message noting that the read failed somewhere along the line.
3428 * If we're printing packet data, and the standard output and error are
3429 * going to the same place, flush the standard output, so everything
3430 * buffered up is written, and then print a newline to the standard error
3431 * before printing the error message, to separate it from the packet
3432 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3433 * the _fstat() documentation at Microsoft doesn't indicate whether
3434 * st_ino is even supported.)
3437 if (print_packet_info) {
3438 ws_statb64 stat_stdout, stat_stderr;
3440 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3441 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3442 stat_stdout.st_ino == stat_stderr.st_ino) {
3444 fprintf(stderr, "\n");
3451 case WTAP_ERR_UNSUPPORTED:
3452 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3454 err_info != NULL ? err_info : "no information supplied");
3458 case WTAP_ERR_SHORT_READ:
3459 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3463 case WTAP_ERR_BAD_FILE:
3464 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3466 err_info != NULL ? err_info : "no information supplied");
3470 case WTAP_ERR_DECOMPRESS:
3471 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3472 "(%s)", cf->filename,
3473 err_info != NULL ? err_info : "no information supplied");
3478 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3479 cf->filename, wtap_strerror(err));
3482 if (save_file != NULL) {
3483 /* Now close the capture file. */
3484 if (!wtap_dump_close(pdh, &err))
3485 show_capture_file_io_error(save_file, err, TRUE);
3488 if (save_file != NULL) {
3489 if (pdh && out_file_name_res) {
3490 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3491 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3492 wtap_file_type_subtype_short_string(out_file_type));
3495 /* Now close the capture file. */
3496 if (!wtap_dump_close(pdh, &err))
3497 show_capture_file_io_error(save_file, err, TRUE);
3499 if (print_packet_info) {
3500 if (!write_finale()) {
3502 show_print_file_io_error(err);
3509 wtap_close(cf->wth);
3512 g_free(save_file_string);
3519 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3520 const guchar *pd, guint tap_flags)
3526 /* Count this packet. */
3529 /* If we're not running a display filter and we're not printing any
3530 packet information, we don't need to do a dissection. This means
3531 that all packets can be marked as 'passed'. */
3534 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3536 /* If we're going to print packet information, or we're going to
3537 run a read filter, or we're going to process taps, set up to
3538 do a dissection and do so. */
3540 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3541 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3542 /* Grab any resolved addresses */
3543 host_name_lookup_process();
3545 /* If we're running a filter, prime the epan_dissect_t with that
3548 epan_dissect_prime_dfilter(edt, cf->dfcode);
3550 col_custom_prime_edt(edt, &cf->cinfo);
3552 /* We only need the columns if either
3553 1) some tap needs the columns
3555 2) we're printing packet info but we're *not* verbose; in verbose
3556 mode, we print the protocol tree, not the protocol summary.
3558 3) there is a column mapped as an individual field */
3559 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3564 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3566 if (ref == &fdata) {
3571 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3573 /* Run the filter if we have it. */
3575 passed = dfilter_apply_edt(cf->dfcode, edt);
3579 frame_data_set_after_dissect(&fdata, &cum_bytes);
3581 /* Process this packet. */
3582 if (print_packet_info) {
3583 /* We're printing packet information; print the information for
3585 print_packet(cf, edt);
3587 /* The ANSI C standard does not appear to *require* that a line-buffered
3588 stream be flushed to the host environment whenever a newline is
3589 written, it just says that, on such a stream, characters "are
3590 intended to be transmitted to or from the host environment as a
3591 block when a new-line character is encountered".
3593 The Visual C++ 6.0 C implementation doesn't do what is intended;
3594 even if you set a stream to be line-buffered, it still doesn't
3595 flush the buffer at the end of every line.
3597 So, if the "-l" flag was specified, we flush the standard output
3598 at the end of a packet. This will do the right thing if we're
3599 printing packet summary lines, and, as we print the entire protocol
3600 tree for a single packet without waiting for anything to happen,
3601 it should be as good as line-buffered mode if we're printing
3602 protocol trees. (The whole reason for the "-l" flag in either
3603 tcpdump or TShark is to allow the output of a live capture to
3604 be piped to a program or script and to have that script see the
3605 information for the packet as soon as it's printed, rather than
3606 having to wait until a standard I/O buffer fills up. */
3610 if (ferror(stdout)) {
3611 show_print_file_io_error(errno);
3616 /* this must be set after print_packet() [bug #8160] */
3617 prev_dis_frame = fdata;
3618 prev_dis = &prev_dis_frame;
3621 prev_cap_frame = fdata;
3622 prev_cap = &prev_cap_frame;
3625 epan_dissect_reset(edt);
3626 frame_data_destroy(&fdata);
3632 write_preamble(capture_file *cf)
3634 switch (output_action) {
3637 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3641 write_pdml_preamble(stdout, cf->filename);
3643 write_psml_preamble(&cf->cinfo, stdout);
3644 return !ferror(stdout);
3647 write_fields_preamble(output_fields, stdout);
3648 return !ferror(stdout);
3651 g_assert_not_reached();
3657 get_line_buf(size_t len)
3659 static char *line_bufp = NULL;
3660 static size_t line_buf_len = 256;
3661 size_t new_line_buf_len;
3663 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3664 new_line_buf_len *= 2)
3666 if (line_bufp == NULL) {
3667 line_buf_len = new_line_buf_len;
3668 line_bufp = (char *)g_malloc(line_buf_len + 1);
3670 if (new_line_buf_len > line_buf_len) {
3671 line_buf_len = new_line_buf_len;
3672 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3679 put_string(char *dest, const char *str, size_t str_len)
3681 memcpy(dest, str, str_len);
3682 dest[str_len] = '\0';
3686 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3690 for (i = str_len; i < str_with_spaces; i++)
3693 put_string(dest, str, str_len);
3697 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3701 memcpy(dest, str, str_len);
3702 for (i = str_len; i < str_with_spaces; i++)
3705 dest[str_with_spaces] = '\0';
3709 print_columns(capture_file *cf)
3717 line_bufp = get_line_buf(256);
3720 for (i = 0; i < cf->cinfo.num_cols; i++) {
3721 /* Skip columns not marked as visible. */
3722 if (!get_column_visible(i))
3724 switch (cf->cinfo.col_fmt[i]) {
3726 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3729 line_bufp = get_line_buf(buf_offset + column_len);
3730 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3736 case COL_ABS_YMD_TIME: /* XXX - wider */
3737 case COL_ABS_YDOY_TIME: /* XXX - wider */
3739 case COL_UTC_YMD_TIME: /* XXX - wider */
3740 case COL_UTC_YDOY_TIME: /* XXX - wider */
3741 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3742 if (column_len < 10)
3744 line_bufp = get_line_buf(buf_offset + column_len);
3745 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3751 case COL_DEF_DL_SRC:
3752 case COL_RES_DL_SRC:
3753 case COL_UNRES_DL_SRC:
3754 case COL_DEF_NET_SRC:
3755 case COL_RES_NET_SRC:
3756 case COL_UNRES_NET_SRC:
3757 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3758 if (column_len < 12)
3760 line_bufp = get_line_buf(buf_offset + column_len);
3761 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3767 case COL_DEF_DL_DST:
3768 case COL_RES_DL_DST:
3769 case COL_UNRES_DL_DST:
3770 case COL_DEF_NET_DST:
3771 case COL_RES_NET_DST:
3772 case COL_UNRES_NET_DST:
3773 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3774 if (column_len < 12)
3776 line_bufp = get_line_buf(buf_offset + column_len);
3777 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3781 column_len = strlen(cf->cinfo.col_data[i]);
3782 line_bufp = get_line_buf(buf_offset + column_len);
3783 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3786 buf_offset += column_len;
3787 if (i != cf->cinfo.num_cols - 1) {
3789 * This isn't the last column, so we need to print a
3790 * separator between this column and the next.
3792 * If we printed a network source and are printing a
3793 * network destination of the same type next, separate
3794 * them with " -> "; if we printed a network destination
3795 * and are printing a network source of the same type
3796 * next, separate them with " <- "; otherwise separate them
3799 * We add enough space to the buffer for " <- " or " -> ",
3800 * even if we're only adding " ".
3802 line_bufp = get_line_buf(buf_offset + 4);
3803 switch (cf->cinfo.col_fmt[i]) {
3808 switch (cf->cinfo.col_fmt[i + 1]) {
3813 put_string(line_bufp + buf_offset, " -> ", 4);
3818 put_string(line_bufp + buf_offset, " ", 1);
3824 case COL_DEF_DL_SRC:
3825 case COL_RES_DL_SRC:
3826 case COL_UNRES_DL_SRC:
3827 switch (cf->cinfo.col_fmt[i + 1]) {
3829 case COL_DEF_DL_DST:
3830 case COL_RES_DL_DST:
3831 case COL_UNRES_DL_DST:
3832 put_string(line_bufp + buf_offset, " -> ", 4);
3837 put_string(line_bufp + buf_offset, " ", 1);
3843 case COL_DEF_NET_SRC:
3844 case COL_RES_NET_SRC:
3845 case COL_UNRES_NET_SRC:
3846 switch (cf->cinfo.col_fmt[i + 1]) {
3848 case COL_DEF_NET_DST:
3849 case COL_RES_NET_DST:
3850 case COL_UNRES_NET_DST:
3851 put_string(line_bufp + buf_offset, " -> ", 4);
3856 put_string(line_bufp + buf_offset, " ", 1);
3865 switch (cf->cinfo.col_fmt[i + 1]) {
3870 put_string(line_bufp + buf_offset, " <- ", 4);
3875 put_string(line_bufp + buf_offset, " ", 1);
3881 case COL_DEF_DL_DST:
3882 case COL_RES_DL_DST:
3883 case COL_UNRES_DL_DST:
3884 switch (cf->cinfo.col_fmt[i + 1]) {
3886 case COL_DEF_DL_SRC:
3887 case COL_RES_DL_SRC:
3888 case COL_UNRES_DL_SRC:
3889 put_string(line_bufp + buf_offset, " <- ", 4);
3894 put_string(line_bufp + buf_offset, " ", 1);
3900 case COL_DEF_NET_DST:
3901 case COL_RES_NET_DST:
3902 case COL_UNRES_NET_DST:
3903 switch (cf->cinfo.col_fmt[i + 1]) {
3905 case COL_DEF_NET_SRC:
3906 case COL_RES_NET_SRC:
3907 case COL_UNRES_NET_SRC:
3908 put_string(line_bufp + buf_offset, " <- ", 4);
3913 put_string(line_bufp + buf_offset, " ", 1);
3920 put_string(line_bufp + buf_offset, " ", 1);
3926 return print_line(print_stream, 0, line_bufp);
3930 print_packet(capture_file *cf, epan_dissect_t *edt)
3932 print_args_t print_args;
3934 if (print_summary || output_fields_has_cols(output_fields)) {
3935 /* Just fill in the columns. */
3936 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3938 if (print_summary) {
3939 /* Now print them. */
3940 switch (output_action) {
3943 if (!print_columns(cf))
3948 write_psml_columns(edt, stdout);
3949 return !ferror(stdout);
3950 case WRITE_FIELDS: /*No non-verbose "fields" format */
3951 g_assert_not_reached();
3956 if (print_details) {
3957 /* Print the information in the protocol tree. */
3958 switch (output_action) {
3961 /* Only initialize the fields that are actually used in proto_tree_print.
3962 * This is particularly important for .range, as that's heap memory which
3963 * we would otherwise have to g_free().
3964 print_args.to_file = TRUE;
3965 print_args.format = print_format;
3966 print_args.print_summary = print_summary;
3967 print_args.print_formfeed = FALSE;
3968 packet_range_init(&print_args.range, &cfile);
3970 print_args.print_hex = print_hex;
3971 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3973 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
3976 if (!print_line(print_stream, 0, separator))
3982 write_pdml_proto_tree(edt, stdout);
3984 return !ferror(stdout);
3986 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3988 return !ferror(stdout);
3992 if (print_summary || print_details) {
3993 if (!print_line(print_stream, 0, ""))
3996 if (!print_hex_data(print_stream, edt))
3998 if (!print_line(print_stream, 0, separator))
4007 switch (output_action) {
4010 return print_finale(print_stream);
4014 write_pdml_finale(stdout);
4016 write_psml_finale(stdout);
4017 return !ferror(stdout);
4020 write_fields_finale(output_fields, stdout);
4021 return !ferror(stdout);
4024 g_assert_not_reached();
4030 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4034 char err_msg[2048+1];
4036 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4040 /* The open succeeded. Fill in the information for this file. */
4042 /* Create new epan session for dissection. */
4043 epan_free(cf->epan);
4044 cf->epan = tshark_epan_new(cf);
4047 cf->f_datalen = 0; /* not used, but set it anyway */
4049 /* Set the file name because we need it to set the follow stream filter.
4050 XXX - is that still true? We need it for other reasons, though,
4052 cf->filename = g_strdup(fname);
4054 /* Indicate whether it's a permanent or temporary file. */
4055 cf->is_tempfile = is_tempfile;
4057 /* No user changes yet. */
4058 cf->unsaved_changes = FALSE;
4060 cf->cd_t = wtap_file_type_subtype(cf->wth);
4061 cf->open_type = type;
4063 cf->drops_known = FALSE;
4065 cf->snap = wtap_snapshot_length(cf->wth);
4066 if (cf->snap == 0) {
4067 /* Snapshot length not known. */
4068 cf->has_snap = FALSE;
4069 cf->snap = WTAP_MAX_PACKET_SIZE;
4071 cf->has_snap = TRUE;
4072 nstime_set_zero(&cf->elapsed_time);
4077 cf->state = FILE_READ_IN_PROGRESS;
4079 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4080 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4085 g_snprintf(err_msg, sizeof err_msg,
4086 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4087 cmdarg_err("%s", err_msg);
4092 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4094 char *save_file_string;
4096 save_file_string = output_file_description(fname);
4101 cmdarg_err("Not all the packets could be written to the %s because there is "
4102 "no space left on the file system.",
4108 cmdarg_err("Not all the packets could be written to the %s because you are "
4109 "too close to, or over your disk quota.",
4114 case WTAP_ERR_CANT_CLOSE:
4115 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4119 case WTAP_ERR_SHORT_WRITE:
4120 cmdarg_err("Not all the packets could be written to the %s.",
4126 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4127 wtap_strerror(err));
4129 cmdarg_err("An error occurred while writing to the %s: %s.",
4130 save_file_string, wtap_strerror(err));
4134 g_free(save_file_string);
4138 show_print_file_io_error(int err)
4143 cmdarg_err("Not all the packets could be printed because there is "
4144 "no space left on the file system.");
4149 cmdarg_err("Not all the packets could be printed because you are "
4150 "too close to, or over your disk quota.");
4155 cmdarg_err("An error occurred while printing packets: %s.",
4162 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4166 static char errmsg_errno[1024+1];
4169 /* Wiretap error. */
4172 case WTAP_ERR_NOT_REGULAR_FILE:
4173 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4176 case WTAP_ERR_RANDOM_OPEN_PIPE:
4177 /* Seen only when opening a capture file for reading. */
4178 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4181 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4182 /* Seen only when opening a capture file for reading. */
4183 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4186 case WTAP_ERR_UNSUPPORTED:
4187 /* Seen only when opening a capture file for reading. */
4188 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4189 "The file \"%%s\" contains record data that TShark doesn't support.\n"
4191 err_info != NULL ? err_info : "no information supplied");
4193 errmsg = errmsg_errno;
4196 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4197 /* Seen only when opening a capture file for writing. */
4198 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4199 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4200 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4201 errmsg = errmsg_errno;
4204 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
4205 /* Seen only when opening a capture file for writing. */
4206 errmsg = "TShark doesn't support writing capture files in that format.";
4209 case WTAP_ERR_UNWRITABLE_ENCAP:
4210 /* Seen only when opening a capture file for writing. */
4211 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4212 "TShark can't save this capture as a \"%s\" file.",
4213 wtap_file_type_subtype_short_string(file_type));
4214 errmsg = errmsg_errno;
4217 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4219 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4220 "TShark can't save this capture as a \"%s\" file.",
4221 wtap_file_type_subtype_short_string(file_type));
4222 errmsg = errmsg_errno;
4224 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4227 case WTAP_ERR_BAD_FILE:
4228 /* Seen only when opening a capture file for reading. */
4229 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4230 "The file \"%%s\" appears to be damaged or corrupt.\n"
4232 err_info != NULL ? err_info : "no information supplied");
4234 errmsg = errmsg_errno;
4237 case WTAP_ERR_CANT_OPEN:
4239 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4241 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4244 case WTAP_ERR_SHORT_READ:
4245 errmsg = "The file \"%s\" appears to have been cut short"
4246 " in the middle of a packet or other data.";
4249 case WTAP_ERR_SHORT_WRITE:
4250 errmsg = "A full header couldn't be written to the file \"%s\".";
4253 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4254 errmsg = "This file type cannot be written as a compressed file.";
4257 case WTAP_ERR_DECOMPRESS:
4258 /* Seen only when opening a capture file for reading. */
4259 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4260 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4262 err_info != NULL ? err_info : "no information supplied");
4264 errmsg = errmsg_errno;
4268 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4269 "The file \"%%s\" could not be %s: %s.",
4270 for_writing ? "created" : "opened",
4271 wtap_strerror(err));
4272 errmsg = errmsg_errno;
4276 errmsg = file_open_error_message(err, for_writing);
4281 * Open/create errors are reported with an console message in TShark.
4284 open_failure_message(const char *filename, int err, gboolean for_writing)
4286 fprintf(stderr, "tshark: ");
4287 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4288 fprintf(stderr, "\n");
4292 * General errors are reported with an console message in TShark.
4295 failure_message(const char *msg_format, va_list ap)
4297 fprintf(stderr, "tshark: ");
4298 vfprintf(stderr, msg_format, ap);
4299 fprintf(stderr, "\n");
4303 * Read errors are reported with an console message in TShark.
4306 read_failure_message(const char *filename, int err)
4308 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4309 filename, g_strerror(err));
4313 * Write errors are reported with an console message in TShark.
4316 write_failure_message(const char *filename, int err)
4318 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4319 filename, g_strerror(err));
4323 * Report additional information for an error in command-line arguments.
4326 failure_message_cont(const char *msg_format, va_list ap)
4328 vfprintf(stderr, msg_format, ap);
4329 fprintf(stderr, "\n");
4333 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4338 * indent-tabs-mode: nil
4341 * vi: set shiftwidth=2 tabstop=8 expandtab:
4342 * :indentSize=2:tabSize=8:noTabs=true: