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.
44 #include <zlib.h> /* to get the libz version number */
48 # include <sys/capability.h>
51 #ifndef HAVE_GETOPT_LONG
52 #include "wsutil/wsgetopt.h"
57 #include <epan/exceptions.h>
58 #include <epan/epan-int.h>
59 #include <epan/epan.h>
61 #include <wsutil/clopts_common.h>
62 #include <wsutil/cmdarg_err.h>
63 #include <wsutil/crash_info.h>
64 #include <wsutil/filesystem.h>
65 #include <wsutil/file_util.h>
66 #include <wsutil/privileges.h>
67 #include <wsutil/report_err.h>
68 #include <wsutil/ws_diag_control.h>
69 #include <wsutil/ws_version_info.h>
70 #include <wiretap/wtap_opttypes.h>
71 #include <wiretap/pcapng.h>
74 #include <epan/timestamp.h>
75 #include <epan/packet.h>
77 #include <epan/wslua/init_wslua.h>
79 #include "frame_tvbuff.h"
80 #include <epan/disabled_protos.h>
81 #include <epan/prefs.h>
82 #include <epan/column.h>
83 #include <epan/print.h>
84 #include <epan/addr_resolv.h>
86 #include "ui/capture_ui_utils.h"
89 #include "ui/ui_util.h"
90 #include "ui/decode_as_utils.h"
91 #include "ui/cli/tshark-tap.h"
93 #include "filter_files.h"
94 #include <epan/epan_dissect.h>
96 #include <epan/stat_tap_ui.h>
97 #include <epan/conversation_table.h>
98 #include <epan/srt_table.h>
99 #include <epan/rtd_table.h>
100 #include <epan/ex-opt.h>
102 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
103 #include <epan/asn1.h>
104 #include <epan/dissectors/packet-kerberos.h>
107 #include "capture_opts.h"
109 #include "caputils/capture-pcap-util.h"
112 #include "caputils/capture_ifinfo.h"
114 #include "caputils/capture-wpcap.h"
115 #include <wsutil/os_version_info.h>
116 #include <wsutil/unicode-utils.h>
118 #include <capchild/capture_session.h>
119 #include <capchild/capture_sync.h>
120 #include <capture_info.h>
121 #endif /* HAVE_LIBPCAP */
123 #include <epan/funnel.h>
125 #include <wsutil/str_util.h>
128 #include <wsutil/plugins.h>
133 #define tshark_debug(...) g_warning(__VA_ARGS__)
135 #define tshark_debug(...)
140 * This is the template for the decode as option; it is shared between the
141 * various functions that output the usage for this parameter.
143 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
145 static guint32 cum_bytes;
146 static const frame_data *ref;
147 static frame_data ref_frame;
148 static frame_data *prev_dis;
149 static frame_data prev_dis_frame;
150 static frame_data *prev_cap;
151 static frame_data prev_cap_frame;
153 static const char* prev_display_dissector_name = NULL;
155 static gboolean perform_two_pass_analysis;
158 * The way the packet decode is to be written.
161 WRITE_TEXT, /* summary or detail text */
162 WRITE_XML, /* PDML or PSML */
163 WRITE_FIELDS /* User defined list of fields */
164 /* Add CSV and the like here */
167 static output_action_e output_action;
168 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
169 static gboolean print_packet_info; /* TRUE if we're to print packet information */
170 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
171 static gboolean print_details; /* TRUE if we're to print packet details information */
172 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
173 static gboolean line_buffered;
174 static gboolean really_quiet = FALSE;
176 static print_format_e print_format = PR_FMT_TEXT;
177 static print_stream_t *print_stream;
179 static output_fields_t* output_fields = NULL;
181 /* The line separator used between packets, changeable via the -S option */
182 static const char *separator = "";
186 * TRUE if we're to print packet counts to keep track of captured packets.
188 static gboolean print_packet_counts;
190 static capture_options global_capture_opts;
191 static capture_session global_capture_session;
192 static info_data_t global_info_data;
195 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
196 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
199 static gboolean capture(void);
200 static void report_counts(void);
202 static BOOL WINAPI capture_cleanup(DWORD);
204 static void capture_cleanup(int);
206 static void report_counts_siginfo(int);
210 #else /* HAVE_LIBPCAP */
212 static char *output_file_name;
214 #endif /* HAVE_LIBPCAP */
216 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
217 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
218 struct wtap_pkthdr *whdr, const guchar *pd,
220 static void show_capture_file_io_error(const char *, int, gboolean);
221 static void show_print_file_io_error(int err);
222 static gboolean write_preamble(capture_file *cf);
223 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
224 static gboolean write_finale(void);
225 static const char *cf_open_error_message(int err, gchar *err_info,
226 gboolean for_writing, int file_type);
228 static void open_failure_message(const char *filename, int err,
229 gboolean for_writing);
230 static void failure_message(const char *msg_format, va_list ap);
231 static void read_failure_message(const char *filename, int err);
232 static void write_failure_message(const char *filename, int err);
233 static void failure_message_cont(const char *msg_format, va_list ap);
237 static GHashTable *output_only_tables = NULL;
240 const char *sstr; /* The short string */
241 const char *lstr; /* The long string */
245 string_compare(gconstpointer a, gconstpointer b)
247 return strcmp(((const struct string_elem *)a)->sstr,
248 ((const struct string_elem *)b)->sstr);
252 string_elem_print(gpointer data, gpointer not_used _U_)
254 fprintf(stderr, " %s - %s\n",
255 ((struct string_elem *)data)->sstr,
256 ((struct string_elem *)data)->lstr);
260 list_capture_types(void) {
262 struct string_elem *captypes;
265 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
267 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
268 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
269 if (wtap_dump_can_open(i)) {
270 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
271 captypes[i].lstr = wtap_file_type_subtype_string(i);
272 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
275 g_slist_foreach(list, string_elem_print, NULL);
281 list_read_capture_types(void) {
283 struct string_elem *captypes;
285 const char *magic = "Magic-value-based";
286 const char *heuristic = "Heuristics-based";
288 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
289 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
291 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
292 for (i = 0; open_routines[i].name != NULL; i++) {
293 captypes[i].sstr = open_routines[i].name;
294 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
295 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
297 g_slist_foreach(list, string_elem_print, NULL);
303 print_usage(FILE *output)
305 fprintf(output, "\n");
306 fprintf(output, "Usage: tshark [options] ...\n");
307 fprintf(output, "\n");
310 fprintf(output, "Capture interface:\n");
311 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
312 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
313 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
314 fprintf(output, " -p don't capture in promiscuous mode\n");
315 #ifdef HAVE_PCAP_CREATE
316 fprintf(output, " -I capture in monitor mode, if available\n");
318 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
319 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
321 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
322 fprintf(output, " -D print list of interfaces and exit\n");
323 fprintf(output, " -L print list of link-layer types of iface and exit\n");
324 fprintf(output, "\n");
325 fprintf(output, "Capture stop conditions:\n");
326 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
327 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
328 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
329 fprintf(output, " files:NUM - stop after NUM files\n");
330 /*fprintf(output, "\n");*/
331 fprintf(output, "Capture output:\n");
332 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
333 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
334 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
335 #endif /* HAVE_LIBPCAP */
336 #ifdef HAVE_PCAP_REMOTE
337 fprintf(output, "RPCAP options:\n");
338 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
340 /*fprintf(output, "\n");*/
341 fprintf(output, "Input file:\n");
342 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
344 fprintf(output, "\n");
345 fprintf(output, "Processing:\n");
346 fprintf(output, " -2 perform a two-pass analysis\n");
347 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
348 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
349 fprintf(output, " syntax\n");
350 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
351 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\n");
352 fprintf(output, " -d %s ...\n", decode_as_arg_template);
353 fprintf(output, " \"Decode As\", see the man page for details\n");
354 fprintf(output, " Example: tcp.port==8888,http\n");
355 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
356 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
357 fprintf(output, " --disable-protocol <proto_name>\n");
358 fprintf(output, " disable dissection of proto_name\n");
359 fprintf(output, " --enable-heuristic <short_name>\n");
360 fprintf(output, " enable dissection of heuristic protocol\n");
361 fprintf(output, " --disable-heuristic <short_name>\n");
362 fprintf(output, " disable dissection of heuristic protocol\n");
364 /*fprintf(output, "\n");*/
365 fprintf(output, "Output:\n");
366 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
367 fprintf(output, " (or to the standard output for \"-\")\n");
368 fprintf(output, " -C <config profile> start with specified configuration profile\n");
369 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
370 fprintf(output, " an empty \"-F\" option will list the file types\n");
371 fprintf(output, " -V add output of packet tree (Packet Details)\n");
372 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
373 fprintf(output, " separated\n");
374 fprintf(output, " -P print packet summary even when writing to a file\n");
375 fprintf(output, " -S <separator> the line separator to print between packets\n");
376 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
377 fprintf(output, " -T pdml|ps|psml|text|fields\n");
378 fprintf(output, " format of text output (def: text)\n");
379 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
380 fprintf(output, " _ws.col.Info)\n");
381 fprintf(output, " this option can be repeated to print multiple fields\n");
382 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
383 fprintf(output, " header=y|n switch headers on and off\n");
384 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
385 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
386 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
387 fprintf(output, " aggregator\n");
388 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
389 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
390 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
391 fprintf(output, " -l flush standard output after each packet\n");
392 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
393 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
394 fprintf(output, " -g enable group read access on the output file(s)\n");
395 fprintf(output, " -W n Save extra information in the file, if supported.\n");
396 fprintf(output, " n = write network address resolution information\n");
397 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
398 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
399 fprintf(output, " --capture-comment <comment>\n");
400 fprintf(output, " add a capture comment to the newly created\n");
401 fprintf(output, " output file (only for pcapng)\n");
403 fprintf(output, "\n");
404 fprintf(output, "Miscellaneous:\n");
405 fprintf(output, " -h display this help and exit\n");
406 fprintf(output, " -v display version info and exit\n");
407 fprintf(output, " -o <name>:<value> ... override preference setting\n");
408 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
409 fprintf(output, " -G [report] dump one of several available reports and exit\n");
410 fprintf(output, " default report=\"fields\"\n");
411 fprintf(output, " use \"-G ?\" for more help\n");
413 fprintf(output, "\n");
414 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
415 fprintf(output, "You might want to reset it\n");
416 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
417 fprintf(output, "\n");
423 glossary_option_help(void)
429 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
431 fprintf(output, "\n");
432 fprintf(output, "Usage: tshark -G [report]\n");
433 fprintf(output, "\n");
434 fprintf(output, "Glossary table reports:\n");
435 fprintf(output, " -G column-formats dump column format codes and exit\n");
436 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
437 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
438 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
439 fprintf(output, " -G fields dump fields glossary and exit\n");
440 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
441 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
442 fprintf(output, " -G plugins dump installed plugins and exit\n");
443 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
444 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
445 fprintf(output, "\n");
446 fprintf(output, "Preference reports:\n");
447 fprintf(output, " -G currentprefs dump current preferences and exit\n");
448 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
449 fprintf(output, "\n");
453 * For a dissector table, print on the stream described by output,
454 * its short name (which is what's used in the "-d" option) and its
458 display_dissector_table_names(const char *table_name, const char *ui_name,
461 if ((prev_display_dissector_name == NULL) ||
462 (strcmp(prev_display_dissector_name, table_name) != 0)) {
463 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
464 prev_display_dissector_name = table_name;
469 * For a dissector handle, print on the stream described by output,
470 * the filter name (which is what's used in the "-d" option) and the full
471 * name for the protocol that corresponds to this handle.
474 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
477 const gchar *proto_filter_name;
478 const gchar *proto_ui_name;
480 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
482 if (proto_id != -1) {
483 proto_filter_name = proto_get_protocol_filter_name(proto_id);
484 proto_ui_name = proto_get_protocol_name(proto_id);
485 g_assert(proto_filter_name != NULL);
486 g_assert(proto_ui_name != NULL);
488 if ((prev_display_dissector_name == NULL) ||
489 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
490 fprintf((FILE *)output, "\t%s (%s)\n",
493 prev_display_dissector_name = proto_filter_name;
499 * The protocol_name_search structure is used by find_protocol_name_func()
500 * to pass parameters and store results
502 struct protocol_name_search{
503 gchar *searched_name; /* Protocol filter name we are looking for */
504 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
505 guint nb_match; /* How many dissectors matched searched_name */
507 typedef struct protocol_name_search *protocol_name_search_t;
510 * This function parses all dissectors associated with a table to find the
511 * one whose protocol has the specified filter name. It is called
512 * as a reference function in a call to dissector_table_foreach_handle.
513 * The name we are looking for, as well as the results, are stored in the
514 * protocol_name_search struct pointed to by user_data.
515 * If called using dissector_table_foreach_handle, we actually parse the
516 * whole list of dissectors.
519 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
523 const gchar *protocol_filter_name;
524 protocol_name_search_t search_info;
528 search_info = (protocol_name_search_t)user_data;
530 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
531 if (proto_id != -1) {
532 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
533 g_assert(protocol_filter_name != NULL);
534 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
536 if (search_info->nb_match == 0) {
537 /* Record this handle only if this is the first match */
538 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
540 search_info->nb_match++;
546 * Allow dissector key names to be sorted alphabetically
550 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
552 return strcmp((const char*)dissector_a, (const char*)dissector_b);
556 * Print all layer type names supported.
557 * We send the output to the stream described by the handle output.
561 fprint_all_layer_types(FILE *output)
564 prev_display_dissector_name = NULL;
565 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
569 * Print all protocol names supported for a specific layer type.
570 * table_name contains the layer type name in which the search is performed.
571 * We send the output to the stream described by the handle output.
575 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
578 prev_display_dissector_name = NULL;
579 dissector_table_foreach_handle(table_name,
580 display_dissector_names,
585 * The function below parses the command-line parameters for the decode as
586 * feature (a string pointer by cl_param).
587 * It checks the format of the command-line, searches for a matching table
588 * and dissector. If a table/dissector match is not found, we display a
589 * summary of the available tables/dissectors (on stderr) and return FALSE.
590 * If everything is fine, we get the "Decode as" preference activated,
591 * then we return TRUE.
594 add_decode_as(const gchar *cl_param)
597 guint32 selector, selector2;
598 gchar *decoded_param;
599 gchar *remaining_param;
601 gchar *dissector_str;
602 dissector_handle_t dissector_matching;
603 dissector_table_t table_matching;
604 ftenum_t dissector_table_selector_type;
605 struct protocol_name_search user_protocol_name;
609 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
612 decoded_param = g_strdup(cl_param);
613 g_assert(decoded_param);
616 /* The lines below will parse this string (modifying it) to extract all
617 necessary information. Note that decoded_param is still needed since
618 strings are not copied - we just save pointers. */
620 /* This section extracts a layer type (table_name) from decoded_param */
621 table_name = decoded_param; /* Layer type string starts from beginning */
623 remaining_param = strchr(table_name, '=');
624 if (remaining_param == NULL) {
625 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
626 /* If the argument does not follow the template, carry on anyway to check
627 if the table name is at least correct. If remaining_param is NULL,
628 we'll exit anyway further down */
631 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
634 /* Remove leading and trailing spaces from the table name */
635 while ( table_name[0] == ' ' )
637 while ( table_name[strlen(table_name) - 1] == ' ' )
638 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
640 /* The following part searches a table matching with the layer type specified */
641 table_matching = NULL;
643 /* Look for the requested table */
644 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
645 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
648 table_matching = find_dissector_table(table_name);
649 if (!table_matching) {
650 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
654 if (!table_matching) {
655 /* Display a list of supported layer types to help the user, if the
656 specified layer type was not found */
657 cmdarg_err("Valid layer types are:");
658 fprint_all_layer_types(stderr);
660 if (remaining_param == NULL || !table_matching) {
661 /* Exit if the layer type was not found, or if no '=' separator was found
663 g_free(decoded_param);
667 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
668 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
671 remaining_param++; /* Move to the second '=' */
672 *remaining_param = '\0'; /* Remove the second '=' */
674 remaining_param++; /* Position after the layer type string */
676 /* This section extracts a selector value (selector_str) from decoded_param */
678 selector_str = remaining_param; /* Next part starts with the selector number */
680 remaining_param = strchr(selector_str, ',');
681 if (remaining_param == NULL) {
682 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
683 /* If the argument does not follow the template, carry on anyway to check
684 if the selector value is at least correct. If remaining_param is NULL,
685 we'll exit anyway further down */
688 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
691 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
693 switch (dissector_table_selector_type) {
699 /* The selector for this table is an unsigned number. Parse it as such.
700 There's no need to remove leading and trailing spaces from the
701 selector number string, because sscanf will do that for us. */
702 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
707 if (op != ':' && op != '-') {
708 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
709 g_free(decoded_param);
713 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
714 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
715 g_free(decoded_param);
719 else if (selector2 < selector) {
720 /* We could swap them for the user, but maybe it's better to call
721 * this out as an error in case it's not what was intended? */
722 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
723 g_free(decoded_param);
728 cmdarg_err("Invalid selector number \"%s\"", selector_str);
729 g_free(decoded_param);
738 /* The selector for this table is a string. */
742 /* There are currently no dissector tables with any types other
743 than the ones listed above. */
744 g_assert_not_reached();
747 if (remaining_param == NULL) {
748 /* Exit if no ',' separator was found (see above) */
749 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
750 fprint_all_protocols_for_layer_types(stderr, table_name);
751 g_free(decoded_param);
755 remaining_param++; /* Position after the selector number string */
757 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
759 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
761 /* Remove leading and trailing spaces from the dissector name */
762 while ( dissector_str[0] == ' ' )
764 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
765 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
767 dissector_matching = NULL;
769 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
770 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 */
771 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
774 user_protocol_name.nb_match = 0;
775 user_protocol_name.searched_name = dissector_str;
776 user_protocol_name.matched_handle = NULL;
778 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 */
780 if (user_protocol_name.nb_match != 0) {
781 dissector_matching = user_protocol_name.matched_handle;
782 if (user_protocol_name.nb_match > 1) {
783 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
787 /* OK, check whether the problem is that there isn't any such
788 protocol, or that there is but it's not specified as a protocol
789 that's valid for that dissector table.
790 Note, we don't exit here, but dissector_matching will remain NULL,
792 if (proto_get_id_by_filter_name(dissector_str) == -1) {
793 /* No such protocol */
794 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
796 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
797 dissector_str, table_name);
802 if (!dissector_matching) {
803 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
804 fprint_all_protocols_for_layer_types(stderr, table_name);
805 g_free(decoded_param);
809 /* This is the end of the code that parses the command-line options.
810 All information is now stored in the variables:
814 The above variables that are strings are still pointing to areas within
815 decoded_parm. decoded_parm thus still needs to be kept allocated in
816 until we stop needing these variables
817 decoded_param will be deallocated at each exit point of this function */
820 /* We now have a pointer to the handle for the requested dissector
821 (requested protocol) inside the variable dissector_matching */
822 switch (dissector_table_selector_type) {
828 /* The selector for this table is an unsigned number. */
830 dissector_change_uint(table_name, selector, dissector_matching);
831 } else if (op == ':') {
832 for (i = selector; i < (guint64)selector + selector2; i++) {
833 dissector_change_uint(table_name, (guint32)i, dissector_matching);
835 } else { /* op == '-' */
836 for (i = selector; i <= selector2; i++) {
837 dissector_change_uint(table_name, (guint32)i, dissector_matching);
846 /* The selector for this table is a string. */
847 dissector_change_string(table_name, selector_str, dissector_matching);
851 /* There are currently no dissector tables with any types other
852 than the ones listed above. */
853 g_assert_not_reached();
855 g_free(decoded_param); /* "Decode As" rule has been successfully added */
860 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
861 const gchar *message, gpointer user_data)
863 /* ignore log message, if log_level isn't interesting based
864 upon the console log preferences.
865 If the preferences haven't been loaded loaded yet, display the
868 The default console_log_level preference value is such that only
869 ERROR, CRITICAL and WARNING level messages are processed;
870 MESSAGE, INFO and DEBUG level messages are ignored.
872 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
873 ERROR and CRITICAL level messages so the current code is a behavioral
874 change. The current behavior is the same as in Wireshark.
876 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
877 prefs.console_log_level != 0) {
881 g_log_default_handler(log_domain, log_level, message, user_data);
886 output_file_description(const char *fname)
888 char *save_file_string;
890 /* Get a string that describes what we're writing to */
891 if (strcmp(fname, "-") == 0) {
892 /* We're writing to the standard output */
893 save_file_string = g_strdup("standard output");
895 /* We're writing to a file with the name in save_file */
896 save_file_string = g_strdup_printf("file \"%s\"", fname);
898 return save_file_string;
902 print_current_user(void) {
903 gchar *cur_user, *cur_group;
905 if (started_with_special_privs()) {
906 cur_user = get_cur_username();
907 cur_group = get_cur_groupname();
908 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
909 cur_user, cur_group);
912 if (running_with_special_privs()) {
913 fprintf(stderr, " This could be dangerous.");
915 fprintf(stderr, "\n");
920 get_tshark_compiled_version_info(GString *str)
922 /* Capture libraries */
923 get_compiled_caplibs_version(str);
926 g_string_append(str, ", ");
928 g_string_append(str, "with libz ");
930 g_string_append(str, ZLIB_VERSION);
931 #else /* ZLIB_VERSION */
932 g_string_append(str, "(version unknown)");
933 #endif /* ZLIB_VERSION */
934 #else /* HAVE_LIBZ */
935 g_string_append(str, "without libz");
936 #endif /* HAVE_LIBZ */
940 get_tshark_runtime_version_info(GString *str)
943 /* Capture libraries */
944 g_string_append(str, ", ");
945 get_runtime_caplibs_version(str);
949 #if defined(HAVE_LIBZ) && !defined(_WIN32)
950 g_string_append_printf(str, ", with libz %s", zlibVersion());
953 /* stuff used by libwireshark */
954 epan_get_runtime_version_info(str);
958 main(int argc, char *argv[])
960 GString *comp_info_str;
961 GString *runtime_info_str;
962 char *init_progfile_dir_error;
964 static const struct option long_options[] = {
965 {"help", no_argument, NULL, 'h'},
966 {"version", no_argument, NULL, 'v'},
967 LONGOPT_CAPTURE_COMMON
970 gboolean arg_error = FALSE;
976 char *gpf_path, *pf_path;
977 char *gdp_path, *dp_path;
979 int gpf_open_errno, gpf_read_errno;
980 int pf_open_errno, pf_read_errno;
981 int gdp_open_errno, gdp_read_errno;
982 int dp_open_errno, dp_read_errno;
985 volatile int exit_status = 0;
987 gboolean list_link_layer_types = FALSE;
988 gboolean start_capture = FALSE;
993 gboolean capture_option_specified = FALSE;
995 gboolean quiet = FALSE;
996 #ifdef PCAP_NG_DEFAULT
997 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
999 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
1001 volatile gboolean out_file_name_res = FALSE;
1002 volatile int in_file_type = WTAP_TYPE_AUTO;
1003 gchar *volatile cf_name = NULL;
1004 gchar *rfilter = NULL;
1005 gchar *dfilter = NULL;
1006 #ifdef HAVE_PCAP_OPEN_DEAD
1007 struct bpf_program fcode;
1009 dfilter_t *rfcode = NULL;
1010 dfilter_t *dfcode = NULL;
1015 gchar *output_only = NULL;
1016 GSList *disable_protocol_slist = NULL;
1017 GSList *enable_heur_slist = NULL;
1018 GSList *disable_heur_slist = NULL;
1021 * The leading + ensures that getopt_long() does not permute the argv[]
1024 * We have to make sure that the first getopt_long() preserves the content
1025 * of argv[] for the subsequent getopt_long() call.
1027 * We use getopt_long() in both cases to ensure that we're using a routine
1028 * whose permutation behavior we can control in the same fashion on all
1029 * platforms, and so that, if we ever need to process a long argument before
1030 * doing further initialization, we can do so.
1032 * Glibc and Solaris libc document that a leading + disables permutation
1033 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
1034 * and OS X don't document it, but do so anyway.
1036 * We do *not* use a leading - because the behavior of a leading - is
1037 * platform-dependent.
1039 #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:"
1041 static const char optstring[] = OPTSTRING;
1043 tshark_debug("tshark started with %d args", argc);
1045 /* Set the C-language locale to the native environment. */
1046 setlocale(LC_ALL, "");
1048 cmdarg_err_init(failure_message, failure_message_cont);
1051 arg_list_utf_16to8(argc, argv);
1052 create_app_running_mutex();
1053 #if !GLIB_CHECK_VERSION(2,31,0)
1054 g_thread_init(NULL);
1059 * Get credential information for later use, and drop privileges
1060 * before doing anything else.
1061 * Let the user know if anything happened.
1063 init_process_policies();
1064 relinquish_special_privs_perm();
1065 print_current_user();
1068 * Attempt to get the pathname of the executable file.
1070 init_progfile_dir_error = init_progfile_dir(argv[0], main);
1071 if (init_progfile_dir_error != NULL) {
1072 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1073 init_progfile_dir_error);
1076 initialize_funnel_ops();
1079 /* Load wpcap if possible. Do this before collecting the run-time version information */
1082 /* Warn the user if npf.sys isn't loaded. */
1083 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
1084 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
1085 "capturing or\nlisting interfaces.\n");
1089 /* Get the compile-time version information string */
1090 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1091 epan_get_compiled_version_info);
1093 /* Get the run-time version information string */
1094 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1096 /* Add it to the information to be reported on a crash. */
1097 ws_add_crash_info("TShark (Wireshark) %s\n"
1102 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
1103 g_string_free(comp_info_str, TRUE);
1104 g_string_free(runtime_info_str, TRUE);
1107 * In order to have the -X opts assigned before the wslua machine starts
1108 * we need to call getopt_long before epan_init() gets called.
1110 * In order to handle, for example, -o options, we also need to call it
1111 * *after* epan_init() gets called, so that the dissectors have had a
1112 * chance to register their preferences.
1114 * XXX - can we do this all with one getopt_long() call, saving the
1115 * arguments we can't handle until after initializing libwireshark,
1116 * and then process them after initializing libwireshark?
1120 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1122 case 'C': /* Configuration Profile */
1123 if (profile_exists (optarg, FALSE)) {
1124 set_profile_name (optarg);
1126 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1130 case 'P': /* Print packet summary info even when writing to a file */
1131 print_packet_info = TRUE;
1132 print_summary = TRUE;
1134 case 'O': /* Only output these protocols */
1135 output_only = g_strdup(optarg);
1137 case 'V': /* Verbose */
1138 print_details = TRUE;
1139 print_packet_info = TRUE;
1141 case 'x': /* Print packet data in hex (and ASCII) */
1143 /* The user asked for hex output, so let's ensure they get it,
1144 * even if they're writing to a file.
1146 print_packet_info = TRUE;
1157 * Print packet summary information is the default, unless either -V or -x
1158 * were specified and -P was not. Note that this is new behavior, which
1159 * allows for the possibility of printing only hex/ascii output without
1160 * necessarily requiring that either the summary or details be printed too.
1162 if (print_summary == -1)
1163 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1165 /** Send All g_log messages to our own handler **/
1169 G_LOG_LEVEL_CRITICAL|
1170 G_LOG_LEVEL_WARNING|
1171 G_LOG_LEVEL_MESSAGE|
1174 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1176 g_log_set_handler(NULL,
1177 (GLogLevelFlags)log_flags,
1178 tshark_log_handler, NULL /* user_data */);
1179 g_log_set_handler(LOG_DOMAIN_MAIN,
1180 (GLogLevelFlags)log_flags,
1181 tshark_log_handler, NULL /* user_data */);
1184 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1185 (GLogLevelFlags)log_flags,
1186 tshark_log_handler, NULL /* user_data */);
1187 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1188 (GLogLevelFlags)log_flags,
1189 tshark_log_handler, NULL /* user_data */);
1192 init_report_err(failure_message, open_failure_message, read_failure_message,
1193 write_failure_message);
1196 capture_opts_init(&global_capture_opts);
1197 capture_session_init(&global_capture_session, &cfile);
1200 timestamp_set_type(TS_RELATIVE);
1201 timestamp_set_precision(TS_PREC_AUTO);
1202 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1204 init_open_routines();
1207 /* Register all the plugin types we have. */
1208 epan_register_plugin_types(); /* Types known to libwireshark */
1209 wtap_register_plugin_types(); /* Types known to libwiretap */
1211 /* Scan for plugins. This does *not* call their registration routines;
1212 that's done later. */
1215 /* Register all libwiretap plugin modules. */
1216 register_all_wiretap_modules();
1219 /* Register all dissectors; we must do this before checking for the
1220 "-G" flag, as the "-G" flag dumps information registered by the
1221 dissectors, and we must do it before we read the preferences, in
1222 case any dissectors register preferences. */
1223 if (!epan_init(register_all_protocols, register_all_protocol_handoffs, NULL,
1227 /* Register all tap listeners; we do this before we parse the arguments,
1228 as the "-z" argument can specify a registered tap. */
1230 /* we register the plugin taps before the other taps because
1231 stats_tree taps plugins will be registered as tap listeners
1232 by stats_tree_stat.c and need to registered before that */
1234 register_all_plugin_tap_listeners();
1236 register_all_tap_listeners();
1237 conversation_table_set_gui_info(init_iousers);
1238 hostlist_table_set_gui_info(init_hostlists);
1239 srt_table_iterate_tables(register_srt_tables, NULL);
1240 rtd_table_iterate_tables(register_rtd_tables, NULL);
1241 new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
1243 /* If invoked with the "-G" flag, we dump out information based on
1244 the argument to the "-G" flag; if no argument is specified,
1245 for backwards compatibility we dump out a glossary of display
1248 XXX - we do this here, for now, to support "-G" with no arguments.
1249 If none of our build or other processes uses "-G" with no arguments,
1250 we can just process it with the other arguments. */
1251 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1252 proto_initialize_all_prefixes();
1255 proto_registrar_dump_fields();
1257 if (strcmp(argv[2], "column-formats") == 0)
1258 column_dump_column_formats();
1259 else if (strcmp(argv[2], "currentprefs") == 0) {
1260 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1261 &pf_open_errno, &pf_read_errno, &pf_path);
1264 else if (strcmp(argv[2], "decodes") == 0)
1265 dissector_dump_decodes();
1266 else if (strcmp(argv[2], "defaultprefs") == 0)
1268 else if (strcmp(argv[2], "dissector-tables") == 0)
1269 dissector_dump_dissector_tables();
1270 else if (strcmp(argv[2], "fieldcount") == 0) {
1271 /* return value for the test suite */
1272 return proto_registrar_dump_fieldcount();
1273 } else if (strcmp(argv[2], "fields") == 0)
1274 proto_registrar_dump_fields();
1275 else if (strcmp(argv[2], "ftypes") == 0)
1276 proto_registrar_dump_ftypes();
1277 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1278 dissector_dump_heur_decodes();
1279 else if (strcmp(argv[2], "plugins") == 0) {
1284 wslua_plugins_dump_all();
1287 else if (strcmp(argv[2], "protocols") == 0)
1288 proto_registrar_dump_protocols();
1289 else if (strcmp(argv[2], "values") == 0)
1290 proto_registrar_dump_values();
1291 else if (strcmp(argv[2], "?") == 0)
1292 glossary_option_help();
1293 else if (strcmp(argv[2], "-?") == 0)
1294 glossary_option_help();
1296 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1303 /* load the decode as entries of this profile */
1304 load_decode_as_entries();
1306 tshark_debug("tshark reading preferences");
1308 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1309 &pf_open_errno, &pf_read_errno, &pf_path);
1310 if (gpf_path != NULL) {
1311 if (gpf_open_errno != 0) {
1312 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1313 pf_path, g_strerror(gpf_open_errno));
1315 if (gpf_read_errno != 0) {
1316 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1317 pf_path, g_strerror(gpf_read_errno));
1320 if (pf_path != NULL) {
1321 if (pf_open_errno != 0) {
1322 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1323 g_strerror(pf_open_errno));
1325 if (pf_read_errno != 0) {
1326 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1327 pf_path, g_strerror(pf_read_errno));
1333 read_filter_list(CFILTER_LIST, &cf_path, &cf_open_errno);
1334 if (cf_path != NULL) {
1335 cmdarg_err("Could not open your capture filter file\n\"%s\": %s.",
1336 cf_path, g_strerror(cf_open_errno));
1340 /* Read the disabled protocols file. */
1341 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1342 &dp_path, &dp_open_errno, &dp_read_errno);
1343 read_disabled_heur_dissector_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1344 &dp_path, &dp_open_errno, &dp_read_errno);
1345 if (gdp_path != NULL) {
1346 if (gdp_open_errno != 0) {
1347 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1348 gdp_path, g_strerror(gdp_open_errno));
1350 if (gdp_read_errno != 0) {
1351 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1352 gdp_path, g_strerror(gdp_read_errno));
1356 if (dp_path != NULL) {
1357 if (dp_open_errno != 0) {
1359 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1360 g_strerror(dp_open_errno));
1362 if (dp_read_errno != 0) {
1364 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1365 g_strerror(dp_read_errno));
1370 cap_file_init(&cfile);
1372 /* Print format defaults to this. */
1373 print_format = PR_FMT_TEXT;
1375 output_fields = output_fields_new();
1378 * To reset the options parser, set optreset to 1 on platforms that
1379 * have optreset (documented in *BSD and OS X, apparently present but
1380 * not documented in Solaris - the Illumos repository seems to
1381 * suggest that the first Solaris getopt_long(), at least as of 2004,
1382 * was based on the NetBSD one, it had optreset) and set optind to 1,
1383 * and set optind to 0 otherwise (documented as working in the GNU
1384 * getopt_long(). Setting optind to 0 didn't originally work in the
1385 * NetBSD one, but that was added later - we don't want to depend on
1386 * it if we have optreset).
1388 * Also reset opterr to 1, so that error messages are printed by
1391 #ifdef HAVE_OPTRESET
1399 /* Now get our args */
1400 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1402 case '2': /* Perform two pass analysis */
1403 perform_two_pass_analysis = TRUE;
1405 case 'a': /* autostop criteria */
1406 case 'b': /* Ringbuffer option */
1407 case 'c': /* Capture x packets */
1408 case 'f': /* capture filter */
1409 case 'g': /* enable group read access on file(s) */
1410 case 'i': /* Use interface x */
1411 case 'p': /* Don't capture in promiscuous mode */
1412 #ifdef HAVE_PCAP_REMOTE
1413 case 'A': /* Authentication */
1415 #ifdef HAVE_PCAP_CREATE
1416 case 'I': /* Capture in monitor mode, if available */
1418 case 's': /* Set the snapshot (capture) length */
1419 case 'w': /* Write to capture file x */
1420 case 'y': /* Set the pcap data link type */
1421 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1422 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1423 case 'B': /* Buffer size */
1426 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1433 * Output file name, if we're reading a file and writing to another
1436 output_file_name = optarg;
1438 capture_option_specified = TRUE;
1444 /* already processed; just ignore it now */
1446 case 'd': /* Decode as rule */
1447 if (!add_decode_as(optarg))
1450 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1451 case 'K': /* Kerberos keytab file */
1452 read_keytab_file(optarg);
1455 case 'D': /* Print a list of capture devices and exit */
1457 if_list = capture_interface_list(&err, &err_str,NULL);
1458 if (if_list == NULL) {
1460 cmdarg_err("There are no interfaces on which a capture can be done");
1462 cmdarg_err("%s", err_str);
1467 capture_opts_print_interfaces(if_list);
1468 free_interface_list(if_list);
1471 capture_option_specified = TRUE;
1477 output_fields_add(output_fields, optarg);
1481 if (!output_fields_set_option(output_fields, optarg)) {
1482 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1483 output_fields_list_options(stderr);
1488 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1489 if (out_file_type < 0) {
1490 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1491 list_capture_types();
1495 case 'W': /* Select extra information to save in our capture file */
1496 /* This is patterned after the -N flag which may not be the best idea. */
1497 if (strchr(optarg, 'n')) {
1498 out_file_name_res = TRUE;
1500 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1501 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1505 case 'H': /* Read address to name mappings from a hosts file */
1506 if (! add_hosts_file(optarg))
1508 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1511 out_file_name_res = TRUE;
1514 case 'h': /* Print help and exit */
1515 printf("TShark (Wireshark) %s\n"
1516 "Dump and analyze network traffic.\n"
1517 "See https://www.wireshark.org for more information.\n",
1518 get_ws_vcs_version_info());
1519 print_usage(stdout);
1522 case 'l': /* "Line-buffer" standard output */
1523 /* This isn't line-buffering, strictly speaking, it's just
1524 flushing the standard output after the information for
1525 each packet is printed; however, that should be good
1526 enough for all the purposes to which "-l" is put (and
1527 is probably actually better for "-V", as it does fewer
1530 See the comment in "process_packet()" for an explanation of
1531 why we do that, and why we don't just use "setvbuf()" to
1532 make the standard output line-buffered (short version: in
1533 Windows, "line-buffered" is the same as "fully-buffered",
1534 and the output buffer is only flushed when it fills up). */
1535 line_buffered = TRUE;
1537 case 'L': /* Print list of link-layer types and exit */
1539 list_link_layer_types = TRUE;
1541 capture_option_specified = TRUE;
1545 case 'n': /* No name resolution */
1546 disable_name_resolution();
1548 case 'N': /* Select what types of addresses/port #s to resolve */
1549 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1550 if (badopt != '\0') {
1551 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1553 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1554 "\t'd' to enable address resolution from captured DNS packets\n"
1555 "\t'm' to enable MAC address resolution\n"
1556 "\t'n' to enable network address resolution\n"
1557 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1558 "\t for network address resolution\n"
1559 "\t't' to enable transport-layer port number resolution");
1563 case 'o': /* Override preference from command line */
1564 switch (prefs_set_pref(optarg)) {
1569 case PREFS_SET_SYNTAX_ERR:
1570 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1574 case PREFS_SET_NO_SUCH_PREF:
1575 case PREFS_SET_OBSOLETE:
1576 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1581 case 'q': /* Quiet */
1584 case 'Q': /* Really quiet */
1586 really_quiet = TRUE;
1588 case 'r': /* Read capture file x */
1589 cf_name = g_strdup(optarg);
1591 case 'R': /* Read file filter */
1595 /* already processed; just ignore it now */
1597 case 'S': /* Set the line Separator to be printed between packets */
1600 case 't': /* Time stamp type */
1601 if (strcmp(optarg, "r") == 0)
1602 timestamp_set_type(TS_RELATIVE);
1603 else if (strcmp(optarg, "a") == 0)
1604 timestamp_set_type(TS_ABSOLUTE);
1605 else if (strcmp(optarg, "ad") == 0)
1606 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1607 else if (strcmp(optarg, "adoy") == 0)
1608 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1609 else if (strcmp(optarg, "d") == 0)
1610 timestamp_set_type(TS_DELTA);
1611 else if (strcmp(optarg, "dd") == 0)
1612 timestamp_set_type(TS_DELTA_DIS);
1613 else if (strcmp(optarg, "e") == 0)
1614 timestamp_set_type(TS_EPOCH);
1615 else if (strcmp(optarg, "u") == 0)
1616 timestamp_set_type(TS_UTC);
1617 else if (strcmp(optarg, "ud") == 0)
1618 timestamp_set_type(TS_UTC_WITH_YMD);
1619 else if (strcmp(optarg, "udoy") == 0)
1620 timestamp_set_type(TS_UTC_WITH_YDOY);
1622 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1623 cmdarg_err_cont("\t\"a\" for absolute\n"
1624 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1625 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1626 "\t\"d\" for delta\n"
1627 "\t\"dd\" for delta displayed\n"
1628 "\t\"e\" for epoch\n"
1629 "\t\"r\" for relative\n"
1630 "\t\"u\" for absolute UTC\n"
1631 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1632 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1636 case 'T': /* printing Type */
1637 print_packet_info = TRUE;
1638 if (strcmp(optarg, "text") == 0) {
1639 output_action = WRITE_TEXT;
1640 print_format = PR_FMT_TEXT;
1641 } else if (strcmp(optarg, "ps") == 0) {
1642 output_action = WRITE_TEXT;
1643 print_format = PR_FMT_PS;
1644 } else if (strcmp(optarg, "pdml") == 0) {
1645 output_action = WRITE_XML;
1646 print_details = TRUE; /* Need details */
1647 print_summary = FALSE; /* Don't allow summary */
1648 } else if (strcmp(optarg, "psml") == 0) {
1649 output_action = WRITE_XML;
1650 print_details = FALSE; /* Don't allow details */
1651 print_summary = TRUE; /* Need summary */
1652 } else if (strcmp(optarg, "fields") == 0) {
1653 output_action = WRITE_FIELDS;
1654 print_details = TRUE; /* Need full tree info */
1655 print_summary = FALSE; /* Don't allow summary */
1657 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1658 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1659 "\t specified by the -E option.\n"
1660 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1661 "\t details of a decoded packet. This information is equivalent to\n"
1662 "\t the packet details printed with the -V flag.\n"
1663 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1664 "\t the packets, or a multi-line view of the details of each of\n"
1665 "\t the packets, depending on whether the -V flag was specified.\n"
1666 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1667 "\t summary information of a decoded packet. This information is\n"
1668 "\t equivalent to the information shown in the one-line summary\n"
1669 "\t printed by default.\n"
1670 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1671 "\t packets, or a multi-line view of the details of each of the\n"
1672 "\t packets, depending on whether the -V flag was specified.\n"
1673 "\t This is the default.");
1677 case 'u': /* Seconds type */
1678 if (strcmp(optarg, "s") == 0)
1679 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1680 else if (strcmp(optarg, "hms") == 0)
1681 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1683 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1684 cmdarg_err_cont("\t\"s\" for seconds\n"
1685 "\t\"hms\" for hours, minutes and seconds");
1689 case 'v': /* Show version and exit */
1690 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1691 epan_get_compiled_version_info);
1692 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1693 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1694 g_string_free(comp_info_str, TRUE);
1695 g_string_free(runtime_info_str, TRUE);
1696 /* We don't really have to cleanup here, but it's a convenient way to test
1697 * start-up and shut-down of the epan library without any UI-specific
1698 * cruft getting in the way. Makes the results of running
1699 * $ ./tools/valgrind-wireshark -n
1700 * much more useful. */
1703 case 'O': /* Only output these protocols */
1704 /* already processed; just ignore it now */
1706 case 'V': /* Verbose */
1707 /* already processed; just ignore it now */
1709 case 'x': /* Print packet data in hex (and ASCII) */
1710 /* already processed; just ignore it now */
1713 /* already processed; just ignore it now */
1719 /* We won't call the init function for the stat this soon
1720 as it would disallow MATE's fields (which are registered
1721 by the preferences set callback) from being used as
1722 part of a tap filter. Instead, we just add the argument
1723 to a list of stat arguments. */
1724 if (strcmp("help", optarg) == 0) {
1725 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1726 list_stat_cmd_args();
1729 if (!process_stat_cmd_arg(optarg)) {
1730 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1731 list_stat_cmd_args();
1735 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1736 disable_protocol_slist = g_slist_append(disable_protocol_slist, optarg);
1738 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1739 enable_heur_slist = g_slist_append(enable_heur_slist, optarg);
1741 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1742 disable_heur_slist = g_slist_append(disable_heur_slist, optarg);
1746 case '?': /* Bad flag - print usage message */
1749 list_capture_types();
1752 print_usage(stderr);
1759 /* If we specified output fields, but not the output field type... */
1760 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1761 cmdarg_err("Output fields were specified with \"-e\", "
1762 "but \"-Tfields\" was not specified.");
1764 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1765 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1766 "specified with \"-e\".");
1771 /* If no capture filter or display filter has been specified, and there are
1772 still command-line arguments, treat them as the tokens of a capture
1773 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1774 flag was specified. */
1775 if (optind < argc) {
1776 if (cf_name != NULL) {
1777 if (dfilter != NULL) {
1778 cmdarg_err("Display filters were specified both with \"-d\" "
1779 "and with additional command-line arguments.");
1782 dfilter = get_args_as_string(argc, argv, optind);
1787 if (global_capture_opts.default_options.cfilter) {
1788 cmdarg_err("A default capture filter was specified both with \"-f\""
1789 " and with additional command-line arguments.");
1792 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1793 interface_options interface_opts;
1794 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1795 if (interface_opts.cfilter == NULL) {
1796 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1797 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1798 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1800 cmdarg_err("A capture filter was specified both with \"-f\""
1801 " and with additional command-line arguments.");
1805 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1807 capture_option_specified = TRUE;
1813 if (!global_capture_opts.saving_to_file) {
1814 /* We're not saving the capture to a file; if "-q" wasn't specified,
1815 we should print packet information */
1817 print_packet_info = TRUE;
1819 /* We're saving to a file; if we're writing to the standard output.
1820 and we'll also be writing dissected packets to the standard
1821 output, reject the request. At best, we could redirect that
1822 to the standard error; we *can't* write both to the standard
1823 output and have either of them be useful. */
1824 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1825 cmdarg_err("You can't write both raw packet data and dissected packets"
1826 " to the standard output.");
1831 /* We're not saving the capture to a file; if "-q" wasn't specified,
1832 we should print packet information */
1834 print_packet_info = TRUE;
1837 #ifndef HAVE_LIBPCAP
1838 if (capture_option_specified)
1839 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1842 print_usage(stderr);
1847 if (output_action != WRITE_TEXT) {
1848 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1853 if (output_only != NULL) {
1856 if (!print_details) {
1857 cmdarg_err("-O requires -V");
1861 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1862 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1863 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1867 if (rfilter != NULL && !perform_two_pass_analysis) {
1868 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1873 if (list_link_layer_types) {
1874 /* We're supposed to list the link-layer types for an interface;
1875 did the user also specify a capture file to be read? */
1877 /* Yes - that's bogus. */
1878 cmdarg_err("You can't specify -L and a capture file to be read.");
1881 /* No - did they specify a ring buffer option? */
1882 if (global_capture_opts.multi_files_on) {
1883 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1889 * "-r" was specified, so we're reading a capture file.
1890 * Capture options don't apply here.
1893 /* We don't support capture filters when reading from a capture file
1894 (the BPF compiler doesn't support all link-layer types that we
1895 support in capture files we read). */
1896 if (global_capture_opts.default_options.cfilter) {
1897 cmdarg_err("Only read filters, not capture filters, "
1898 "can be specified when reading a capture file.");
1901 if (global_capture_opts.multi_files_on) {
1902 cmdarg_err("Multiple capture files requested, but "
1903 "a capture isn't being done.");
1906 if (global_capture_opts.has_file_duration) {
1907 cmdarg_err("Switching capture files after a time interval was specified, but "
1908 "a capture isn't being done.");
1911 if (global_capture_opts.has_ring_num_files) {
1912 cmdarg_err("A ring buffer of capture files was specified, but "
1913 "a capture isn't being done.");
1916 if (global_capture_opts.has_autostop_files) {
1917 cmdarg_err("A maximum number of capture files was specified, but "
1918 "a capture isn't being done.");
1921 if (global_capture_opts.capture_comment) {
1922 cmdarg_err("A capture comment was specified, but "
1923 "a capture isn't being done.\nThere's no support for adding "
1924 "a capture comment to an existing capture file.");
1928 /* Note: TShark now allows the restriction of a _read_ file by packet count
1929 * and byte count as well as a write file. Other autostop options remain valid
1930 * only for a write file.
1932 if (global_capture_opts.has_autostop_duration) {
1933 cmdarg_err("A maximum capture time was specified, but "
1934 "a capture isn't being done.");
1939 * "-r" wasn't specified, so we're doing a live capture.
1941 if (perform_two_pass_analysis) {
1942 /* Two-pass analysis doesn't work with live capture since it requires us
1943 * to buffer packets until we've read all of them, but a live capture
1944 * has no useful/meaningful definition of "all" */
1945 cmdarg_err("Live captures do not support two-pass analysis.");
1949 if (global_capture_opts.saving_to_file) {
1950 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1952 /* When capturing, we only support writing pcap or pcap-ng format. */
1953 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1954 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1955 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1958 if (global_capture_opts.capture_comment &&
1959 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1960 cmdarg_err("A capture comment can only be written to a pcapng file.");
1963 if (global_capture_opts.multi_files_on) {
1964 /* Multiple-file mode doesn't work under certain conditions:
1965 a) it doesn't work if you're writing to the standard output;
1966 b) it doesn't work if you're writing to a pipe;
1968 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1969 cmdarg_err("Multiple capture files requested, but "
1970 "the capture is being written to the standard output.");
1973 if (global_capture_opts.output_to_pipe) {
1974 cmdarg_err("Multiple capture files requested, but "
1975 "the capture file is a pipe.");
1978 if (!global_capture_opts.has_autostop_filesize &&
1979 !global_capture_opts.has_file_duration) {
1980 cmdarg_err("Multiple capture files requested, but "
1981 "no maximum capture file size or duration was specified.");
1985 /* Currently, we don't support read or display filters when capturing
1986 and saving the packets. */
1987 if (rfilter != NULL) {
1988 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1991 if (dfilter != NULL) {
1992 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1995 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1997 /* They didn't specify a "-w" flag, so we won't be saving to a
1998 capture file. Check for options that only make sense if
1999 we're saving to a file. */
2000 if (global_capture_opts.has_autostop_filesize) {
2001 cmdarg_err("Maximum capture file size specified, but "
2002 "capture isn't being saved to a file.");
2005 if (global_capture_opts.multi_files_on) {
2006 cmdarg_err("Multiple capture files requested, but "
2007 "the capture isn't being saved to a file.");
2010 if (global_capture_opts.capture_comment) {
2011 cmdarg_err("A capture comment was specified, but "
2012 "the capture isn't being saved to a file.");
2021 /* Start windows sockets */
2022 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
2025 /* Notify all registered modules that have had any of their preferences
2026 changed either from one of the preferences file or from the command
2027 line that their preferences have changed. */
2030 /* At this point MATE will have registered its field array so we can
2031 have a tap filter with one of MATE's late-registered fields as part
2032 of the filter. We can now process all the "-z" arguments. */
2033 start_requested_stats();
2035 /* At this point MATE will have registered its field array so we can
2036 check if the fields specified by the user are all good.
2040 GSList *invalid_fields = output_fields_valid(output_fields);
2041 if (invalid_fields != NULL) {
2043 cmdarg_err("Some fields aren't valid:");
2044 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
2045 cmdarg_err_cont("\t%s", (gchar *)it->data);
2047 g_slist_free(invalid_fields);
2052 /* We currently don't support taps, or printing dissected packets,
2053 if we're writing to a pipe. */
2054 if (global_capture_opts.saving_to_file &&
2055 global_capture_opts.output_to_pipe) {
2056 if (tap_listeners_require_dissection()) {
2057 cmdarg_err("Taps aren't supported when saving to a pipe.");
2060 if (print_packet_info) {
2061 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
2067 if (ex_opt_count("read_format") > 0) {
2068 const gchar* name = ex_opt_get_next("read_format");
2069 in_file_type = open_info_name_to_type(name);
2070 if (in_file_type == WTAP_TYPE_AUTO) {
2071 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
2072 list_read_capture_types();
2077 /* disabled protocols as per configuration file */
2078 if (gdp_path == NULL && dp_path == NULL) {
2079 set_disabled_protos_list();
2080 set_disabled_heur_dissector_list();
2083 if(disable_protocol_slist) {
2084 GSList *proto_disable;
2085 for (proto_disable = disable_protocol_slist; proto_disable != NULL; proto_disable = g_slist_next(proto_disable))
2087 proto_disable_proto_by_name((char*)proto_disable->data);
2091 if(enable_heur_slist) {
2092 GSList *heur_enable;
2093 for (heur_enable = enable_heur_slist; heur_enable != NULL; heur_enable = g_slist_next(heur_enable))
2095 proto_enable_heuristic_by_name((char*)heur_enable->data, TRUE);
2099 if(disable_heur_slist) {
2100 GSList *heur_disable;
2101 for (heur_disable = disable_heur_slist; heur_disable != NULL; heur_disable = g_slist_next(heur_disable))
2103 proto_enable_heuristic_by_name((char*)heur_disable->data, FALSE);
2107 /* Build the column format array */
2108 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
2111 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
2112 capture_opts_trim_ring_num_files(&global_capture_opts);
2115 if (rfilter != NULL) {
2116 tshark_debug("Compiling read filter: '%s'", rfilter);
2117 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
2118 cmdarg_err("%s", err_msg);
2121 #ifdef HAVE_PCAP_OPEN_DEAD
2125 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2127 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
2129 " Note: That read filter code looks like a valid capture filter;\n"
2130 " maybe you mixed them up?");
2139 cfile.rfcode = rfcode;
2141 if (dfilter != NULL) {
2142 tshark_debug("Compiling display filter: '%s'", dfilter);
2143 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
2144 cmdarg_err("%s", err_msg);
2147 #ifdef HAVE_PCAP_OPEN_DEAD
2151 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2153 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
2155 " Note: That display filter code looks like a valid capture filter;\n"
2156 " maybe you mixed them up?");
2165 cfile.dfcode = dfcode;
2167 if (print_packet_info) {
2168 /* If we're printing as text or PostScript, we have
2169 to create a print stream. */
2170 if (output_action == WRITE_TEXT) {
2171 switch (print_format) {
2174 print_stream = print_stream_text_stdio_new(stdout);
2178 print_stream = print_stream_ps_stdio_new(stdout);
2182 g_assert_not_reached();
2187 /* We have to dissect each packet if:
2189 we're printing information about each packet;
2191 we're using a read filter on the packets;
2193 we're using a display filter on the packets;
2195 we're using any taps that need dissection. */
2196 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2197 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2200 tshark_debug("tshark: Opening capture file: %s", cf_name);
2202 * We're reading a capture file.
2204 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2209 /* Process the packets in the file */
2210 tshark_debug("tshark: invoking load_cap_file() to process the packets");
2213 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2214 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2215 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2217 err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2220 CATCH(OutOfMemoryError) {
2224 "Sorry, but TShark has to terminate now.\n"
2226 "More information and workarounds can be found at\n"
2227 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2232 /* We still dump out the results of taps, etc., as we might have
2233 read some packets; however, we exit with an error status. */
2237 tshark_debug("tshark: no capture file specified");
2238 /* No capture file specified, so we're supposed to do a live capture
2239 or get a list of link-layer types for a live capture device;
2240 do we have support for live captures? */
2242 /* if no interface was specified, pick a default */
2243 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2244 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2245 if (exit_status != 0)
2248 /* if requested, list the link layer types and exit */
2249 if (list_link_layer_types) {
2252 /* Get the list of link-layer types for the capture devices. */
2253 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2254 interface_options interface_opts;
2255 if_capabilities_t *caps;
2256 char *auth_str = NULL;
2258 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2259 #ifdef HAVE_PCAP_REMOTE
2260 if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
2261 auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
2264 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
2267 cmdarg_err("%s", err_str);
2271 if (caps->data_link_types == NULL) {
2272 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2275 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2276 free_if_capabilities(caps);
2282 * If the standard error isn't a terminal, don't print packet counts,
2283 * as they won't show up on the user's terminal and they'll get in
2284 * the way of error messages in the file (to which we assume the
2285 * standard error was redirected; if it's redirected to the null
2286 * device, there's no point in printing packet counts anyway).
2288 * Otherwise, if we're printing packet information and the standard
2289 * output is a terminal (which we assume means the standard output and
2290 * error are going to the same terminal), don't print packet counts,
2291 * as they'll get in the way of the packet information.
2293 * Otherwise, if the user specified -q, don't print packet counts.
2295 * Otherwise, print packet counts.
2297 * XXX - what if the user wants to do a live capture, doesn't want
2298 * to save it to a file, doesn't want information printed for each
2299 * packet, does want some "-z" statistic, and wants packet counts
2300 * so they know whether they're seeing any packets? -q will
2301 * suppress the information printed for each packet, but it'll
2302 * also suppress the packet counts.
2304 if (!isatty(fileno(stderr)))
2305 print_packet_counts = FALSE;
2306 else if (print_packet_info && isatty(fileno(stdout)))
2307 print_packet_counts = FALSE;
2309 print_packet_counts = FALSE;
2311 print_packet_counts = TRUE;
2313 if (print_packet_info) {
2314 if (!write_preamble(&cfile)) {
2315 show_print_file_io_error(errno);
2320 tshark_debug("tshark: performing live capture");
2322 * XXX - this returns FALSE if an error occurred, but it also
2323 * returns FALSE if the capture stops because a time limit
2324 * was reached (and possibly other limits), so we can't assume
2325 * it means an error.
2327 * The capture code is a bit twisty, so it doesn't appear to
2328 * be an easy fix. We just ignore the return value for now.
2329 * Instead, pass on the exit status from the capture child.
2332 exit_status = global_capture_session.fork_child_status;
2334 if (print_packet_info) {
2335 if (!write_finale()) {
2337 show_print_file_io_error(err);
2341 /* No - complain. */
2342 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2349 if (cfile.frames != NULL) {
2350 free_frame_data_sequence(cfile.frames);
2351 cfile.frames = NULL;
2354 draw_tap_listeners(TRUE);
2355 funnel_dump_all_text_windows();
2356 epan_free(cfile.epan);
2359 output_fields_free(output_fields);
2360 output_fields = NULL;
2365 /*#define USE_BROKEN_G_MAIN_LOOP*/
2367 #ifdef USE_BROKEN_G_MAIN_LOOP
2370 gboolean loop_running = FALSE;
2372 guint32 packet_count = 0;
2375 typedef struct pipe_input_tag {
2378 ws_process_id *child_process;
2379 pipe_input_cb_t input_cb;
2380 guint pipe_input_id;
2382 GMutex *callback_running;
2386 static pipe_input_t pipe_input;
2389 /* The timer has expired, see if there's stuff to read from the pipe,
2390 if so, do the callback */
2392 pipe_timer_cb(gpointer data)
2398 pipe_input_t *pipe_input_p = data;
2399 gint iterations = 0;
2401 g_mutex_lock (pipe_input_p->callback_running);
2403 /* try to read data from the pipe only 5 times, to avoid blocking */
2404 while(iterations < 5) {
2405 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2407 /* Oddly enough although Named pipes don't work on win9x,
2408 PeekNamedPipe does !!! */
2409 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2410 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2412 /* Get the child process exit status */
2413 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2416 /* If the Peek returned an error, or there are bytes to be read
2417 or the childwatcher thread has terminated then call the normal
2419 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2421 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2423 /* And call the real handler */
2424 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2425 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2426 /* pipe closed, return false so that the timer is stopped */
2427 g_mutex_unlock (pipe_input_p->callback_running);
2432 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2433 /* No data, stop now */
2440 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2442 g_mutex_unlock (pipe_input_p->callback_running);
2444 /* we didn't stopped the timer, so let it run */
2451 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2454 pipe_input.source = source;
2455 pipe_input.child_process = child_process;
2456 pipe_input.user_data = user_data;
2457 pipe_input.input_cb = input_cb;
2460 #if GLIB_CHECK_VERSION(2,31,0)
2461 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2462 g_mutex_init(pipe_input.callback_running);
2464 pipe_input.callback_running = g_mutex_new();
2466 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2467 do this but that doesn't cover all win32 platforms. GTK can do
2468 this but doesn't seem to work over processes. Attempt to do
2469 something similar here, start a timer and check for data on every
2471 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2472 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2476 static const nstime_t *
2477 tshark_get_frame_ts(void *data, guint32 frame_num)
2479 capture_file *cf = (capture_file *) data;
2481 if (ref && ref->num == frame_num)
2482 return &ref->abs_ts;
2484 if (prev_dis && prev_dis->num == frame_num)
2485 return &prev_dis->abs_ts;
2487 if (prev_cap && prev_cap->num == frame_num)
2488 return &prev_cap->abs_ts;
2491 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2493 return (fd) ? &fd->abs_ts : NULL;
2500 tshark_epan_new(capture_file *cf)
2502 epan_t *epan = epan_new();
2505 epan->get_frame_ts = tshark_get_frame_ts;
2506 epan->get_interface_name = cap_file_get_interface_name;
2507 epan->get_user_comment = NULL;
2519 #ifdef USE_TSHARK_SELECT
2523 struct sigaction action, oldaction;
2526 /* Create new dissection section. */
2527 epan_free(cfile.epan);
2528 cfile.epan = tshark_epan_new(&cfile);
2531 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2532 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2534 /* Catch SIGINT and SIGTERM and, if we get either of them,
2535 clean up and exit. If SIGHUP isn't being ignored, catch
2536 it too and, if we get it, clean up and exit.
2538 We restart any read that was in progress, so that it doesn't
2539 disrupt reading from the sync pipe. The signal handler tells
2540 the capture child to finish; it will report that it finished,
2541 or will exit abnormally, so we'll stop reading from the sync
2542 pipe, pick up the exit status, and quit. */
2543 memset(&action, 0, sizeof(action));
2544 action.sa_handler = capture_cleanup;
2545 action.sa_flags = SA_RESTART;
2546 sigemptyset(&action.sa_mask);
2547 sigaction(SIGTERM, &action, NULL);
2548 sigaction(SIGINT, &action, NULL);
2549 sigaction(SIGHUP, NULL, &oldaction);
2550 if (oldaction.sa_handler == SIG_DFL)
2551 sigaction(SIGHUP, &action, NULL);
2554 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2555 quiet mode, report the number of packets we've captured.
2557 Again, restart any read that was in progress, so that it doesn't
2558 disrupt reading from the sync pipe. */
2559 action.sa_handler = report_counts_siginfo;
2560 action.sa_flags = SA_RESTART;
2561 sigemptyset(&action.sa_mask);
2562 sigaction(SIGINFO, &action, NULL);
2563 #endif /* SIGINFO */
2566 global_capture_session.state = CAPTURE_PREPARING;
2568 /* Let the user know which interfaces were chosen. */
2569 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2570 interface_options interface_opts;
2572 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2573 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2574 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2575 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2577 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2578 if (really_quiet == FALSE)
2579 fprintf(stderr, "Capturing on %s\n", str->str);
2581 g_string_free(str, TRUE);
2583 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2588 /* the actual capture loop
2590 * XXX - glib doesn't seem to provide any event based loop handling.
2592 * XXX - for whatever reason,
2593 * calling g_main_loop_new() ends up in 100% cpu load.
2595 * But that doesn't matter: in UNIX we can use select() to find an input
2596 * source with something to do.
2598 * But that doesn't matter because we're in a CLI (that doesn't need to
2599 * update a GUI or something at the same time) so it's OK if we block
2600 * trying to read from the pipe.
2602 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2603 * wrong (but I leave it there in case I am...).
2606 #ifdef USE_TSHARK_SELECT
2608 FD_SET(pipe_input.source, &readfds);
2611 loop_running = TRUE;
2615 while (loop_running)
2617 #ifdef USE_TSHARK_SELECT
2618 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2622 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2624 } else if (ret == 1) {
2626 /* Call the real handler */
2627 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2628 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2631 #ifdef USE_TSHARK_SELECT
2636 CATCH(OutOfMemoryError) {
2640 "Sorry, but TShark has to terminate now.\n"
2642 "More information and workarounds can be found at\n"
2643 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2650 /* capture child detected an error */
2652 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2654 cmdarg_err("%s", error_msg);
2655 cmdarg_err_cont("%s", secondary_error_msg);
2659 /* capture child detected an capture filter related error */
2661 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2663 capture_options *capture_opts = cap_session->capture_opts;
2664 dfilter_t *rfcode = NULL;
2665 interface_options interface_opts;
2667 g_assert(i < capture_opts->ifaces->len);
2668 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2670 if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
2672 "Invalid capture filter \"%s\" for interface '%s'.\n"
2674 "That string looks like a valid display filter; however, it isn't a valid\n"
2675 "capture filter (%s).\n"
2677 "Note that display filters and capture filters don't have the same syntax,\n"
2678 "so you can't use most display filter expressions as capture filters.\n"
2680 "See the User's Guide for a description of the capture filter syntax.",
2681 interface_opts.cfilter, interface_opts.descr, error_message);
2682 dfilter_free(rfcode);
2685 "Invalid capture filter \"%s\" for interface '%s'.\n"
2687 "That string isn't a valid capture filter (%s).\n"
2688 "See the User's Guide for a description of the capture filter syntax.",
2689 interface_opts.cfilter, interface_opts.descr, error_message);
2694 /* capture child tells us we have a new (or the first) capture file */
2696 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2698 capture_options *capture_opts = cap_session->capture_opts;
2699 capture_file *cf = (capture_file *) cap_session->cf;
2700 gboolean is_tempfile;
2703 if (cap_session->state == CAPTURE_PREPARING) {
2704 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2706 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2708 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2710 /* free the old filename */
2711 if (capture_opts->save_file != NULL) {
2713 /* we start a new capture file, close the old one (if we had one before) */
2714 if (cf->state != FILE_CLOSED) {
2715 if (cf->wth != NULL) {
2716 wtap_close(cf->wth);
2719 cf->state = FILE_CLOSED;
2722 g_free(capture_opts->save_file);
2723 is_tempfile = FALSE;
2725 epan_free(cf->epan);
2726 cf->epan = tshark_epan_new(cf);
2728 /* we didn't had a save_file before, must be a tempfile */
2732 /* save the new filename */
2733 capture_opts->save_file = g_strdup(new_file);
2735 /* if we are in real-time mode, open the new file now */
2736 if (do_dissection) {
2737 /* this is probably unecessary, but better safe than sorry */
2738 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2739 /* Attempt to open the capture file and set up to read from it. */
2740 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2744 /* Don't unlink (delete) the save file - leave it around,
2745 for debugging purposes. */
2746 g_free(capture_opts->save_file);
2747 capture_opts->save_file = NULL;
2752 cap_session->state = CAPTURE_RUNNING;
2758 /* capture child tells us we have new packets to read */
2760 capture_input_new_packets(capture_session *cap_session, int to_read)
2766 capture_file *cf = (capture_file *)cap_session->cf;
2767 gboolean filtering_tap_listeners;
2772 * Prevent a SIGINFO handler from writing to the standard error while
2773 * we're doing so or writing to the standard output; instead, have it
2774 * just set a flag telling us to print that information when we're done.
2777 #endif /* SIGINFO */
2779 /* Do we have any tap listeners with filters? */
2780 filtering_tap_listeners = have_filtering_tap_listeners();
2782 /* Get the union of the flags for all tap listeners. */
2783 tap_flags = union_of_tap_listener_flags();
2785 if (do_dissection) {
2786 gboolean create_proto_tree;
2787 epan_dissect_t *edt;
2789 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2790 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2791 create_proto_tree = TRUE;
2793 create_proto_tree = FALSE;
2795 /* The protocol tree will be "visible", i.e., printed, only if we're
2796 printing packet details, which is true if we're printing stuff
2797 ("print_packet_info" is true) and we're in verbose mode
2798 ("packet_details" is true). */
2799 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2801 while (to_read-- && cf->wth) {
2802 wtap_cleareof(cf->wth);
2803 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2805 /* read from file failed, tell the capture child to stop */
2806 sync_pipe_stop(cap_session);
2807 wtap_close(cf->wth);
2810 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2811 wtap_buf_ptr(cf->wth),
2815 /* packet successfully read and gone through the "Read Filter" */
2820 epan_dissect_free(edt);
2824 * Dumpcap's doing all the work; we're not doing any dissection.
2825 * Count all the packets it wrote.
2827 packet_count += to_read;
2830 if (print_packet_counts) {
2831 /* We're printing packet counts. */
2832 if (packet_count != 0) {
2833 fprintf(stderr, "\r%u ", packet_count);
2834 /* stderr could be line buffered */
2841 * Allow SIGINFO handlers to write.
2846 * If a SIGINFO handler asked us to write out capture counts, do so.
2850 #endif /* SIGINFO */
2856 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2857 /* Report the count only if we aren't printing a packet count
2858 as packets arrive. */
2859 fprintf(stderr, "%u packet%s captured\n", packet_count,
2860 plurality(packet_count, "", "s"));
2863 infoprint = FALSE; /* we just reported it */
2864 #endif /* SIGINFO */
2869 report_counts_siginfo(int signum _U_)
2871 int sav_errno = errno;
2872 /* If we've been told to delay printing, just set a flag asking
2873 that we print counts (if we're supposed to), otherwise print
2874 the count of packets captured (if we're supposed to). */
2881 #endif /* SIGINFO */
2884 /* capture child detected any packet drops? */
2886 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2888 if (print_packet_counts) {
2889 /* We're printing packet counts to stderr.
2890 Send a newline so that we move to the line after the packet count. */
2891 fprintf(stderr, "\n");
2895 /* We're printing packet counts to stderr.
2896 Send a newline so that we move to the line after the packet count. */
2897 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2903 * Capture child closed its side of the pipe, report any error and
2904 * do the required cleanup.
2907 capture_input_closed(capture_session *cap_session, gchar *msg)
2909 capture_file *cf = (capture_file *) cap_session->cf;
2912 fprintf(stderr, "tshark: %s\n", msg);
2916 if (cf != NULL && cf->wth != NULL) {
2917 wtap_close(cf->wth);
2918 if (cf->is_tempfile) {
2919 ws_unlink(cf->filename);
2922 #ifdef USE_BROKEN_G_MAIN_LOOP
2923 /*g_main_loop_quit(loop);*/
2924 g_main_loop_quit(loop);
2926 loop_running = FALSE;
2935 capture_cleanup(DWORD ctrltype _U_)
2937 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2938 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2939 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2940 like SIGTERM at least when the machine's shutting down.
2942 For now, we handle them all as indications that we should clean up
2943 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2946 We must return TRUE so that no other handler - such as one that would
2947 terminate the process - gets called.
2949 XXX - for some reason, typing ^C to TShark, if you run this in
2950 a Cygwin console window in at least some versions of Cygwin,
2951 causes TShark to terminate immediately; this routine gets
2952 called, but the main loop doesn't get a chance to run and
2953 exit cleanly, at least if this is compiled with Microsoft Visual
2954 C++ (i.e., it's a property of the Cygwin console window or Bash;
2955 it happens if TShark is not built with Cygwin - for all I know,
2956 building it with Cygwin may make the problem go away). */
2958 /* tell the capture child to stop */
2959 sync_pipe_stop(&global_capture_session);
2961 /* don't stop our own loop already here, otherwise status messages and
2962 * cleanup wouldn't be done properly. The child will indicate the stop of
2963 * everything by calling capture_input_closed() later */
2969 capture_cleanup(int signum _U_)
2971 /* tell the capture child to stop */
2972 sync_pipe_stop(&global_capture_session);
2974 /* don't stop our own loop already here, otherwise status messages and
2975 * cleanup wouldn't be done properly. The child will indicate the stop of
2976 * everything by calling capture_input_closed() later */
2979 #endif /* HAVE_LIBPCAP */
2982 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2983 gint64 offset, struct wtap_pkthdr *whdr,
2990 /* The frame number of this packet is one more than the count of
2991 frames in this packet. */
2992 framenum = cf->count + 1;
2994 /* If we're not running a display filter and we're not printing any
2995 packet information, we don't need to do a dissection. This means
2996 that all packets can be marked as 'passed'. */
2999 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
3001 /* If we're going to print packet information, or we're going to
3002 run a read filter, or display filter, or we're going to process taps, set up to
3003 do a dissection and do so. */
3005 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3006 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3007 /* Grab any resolved addresses */
3008 host_name_lookup_process();
3010 /* If we're running a read filter, prime the epan_dissect_t with that
3013 epan_dissect_prime_dfilter(edt, cf->rfcode);
3016 epan_dissect_prime_dfilter(edt, cf->dfcode);
3018 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
3020 if (ref == &fdlocal) {
3021 ref_frame = fdlocal;
3025 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
3027 /* Run the read filter if we have one. */
3029 passed = dfilter_apply_edt(cf->rfcode, edt);
3033 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
3034 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
3036 /* If we're not doing dissection then there won't be any dependent frames.
3037 * More importantly, edt.pi.dependent_frames won't be initialized because
3038 * epan hasn't been initialized.
3039 * if we *are* doing dissection, then mark the dependent frames, but only
3040 * if a display filter was given and it matches this packet.
3042 if (edt && cf->dfcode) {
3043 if (dfilter_apply_edt(cf->dfcode, edt)) {
3044 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
3050 /* if we don't add it to the frame_data_sequence, clean it up right now
3052 frame_data_destroy(&fdlocal);
3056 epan_dissect_reset(edt);
3062 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
3063 struct wtap_pkthdr *phdr, Buffer *buf,
3069 /* If we're not running a display filter and we're not printing any
3070 packet information, we don't need to do a dissection. This means
3071 that all packets can be marked as 'passed'. */
3074 /* If we're going to print packet information, or we're going to
3075 run a read filter, or we're going to process taps, set up to
3076 do a dissection and do so. */
3078 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3079 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3080 /* Grab any resolved addresses */
3081 host_name_lookup_process();
3083 /* If we're running a display filter, prime the epan_dissect_t with that
3086 epan_dissect_prime_dfilter(edt, cf->dfcode);
3088 col_custom_prime_edt(edt, &cf->cinfo);
3090 /* We only need the columns if either
3091 1) some tap needs the columns
3093 2) we're printing packet info but we're *not* verbose; in verbose
3094 mode, we print the protocol tree, not the protocol summary.
3096 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3101 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3108 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
3110 /* Run the read/display filter if we have one. */
3112 passed = dfilter_apply_edt(cf->dfcode, edt);
3116 frame_data_set_after_dissect(fdata, &cum_bytes);
3117 /* Process this packet. */
3118 if (print_packet_info) {
3119 /* We're printing packet information; print the information for
3121 print_packet(cf, edt);
3123 /* The ANSI C standard does not appear to *require* that a line-buffered
3124 stream be flushed to the host environment whenever a newline is
3125 written, it just says that, on such a stream, characters "are
3126 intended to be transmitted to or from the host environment as a
3127 block when a new-line character is encountered".
3129 The Visual C++ 6.0 C implementation doesn't do what is intended;
3130 even if you set a stream to be line-buffered, it still doesn't
3131 flush the buffer at the end of every line.
3133 So, if the "-l" flag was specified, we flush the standard output
3134 at the end of a packet. This will do the right thing if we're
3135 printing packet summary lines, and, as we print the entire protocol
3136 tree for a single packet without waiting for anything to happen,
3137 it should be as good as line-buffered mode if we're printing
3138 protocol trees. (The whole reason for the "-l" flag in either
3139 tcpdump or TShark is to allow the output of a live capture to
3140 be piped to a program or script and to have that script see the
3141 information for the packet as soon as it's printed, rather than
3142 having to wait until a standard I/O buffer fills up. */
3146 if (ferror(stdout)) {
3147 show_print_file_io_error(errno);
3156 epan_dissect_reset(edt);
3158 return passed || fdata->flags.dependent_of_displayed;
3162 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3163 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3166 int snapshot_length;
3170 gchar *err_info = NULL;
3172 char *save_file_string = NULL;
3173 gboolean filtering_tap_listeners;
3175 wtap_optionblock_t shb_hdr = NULL;
3176 wtapng_iface_descriptions_t *idb_inf = NULL;
3177 wtap_optionblock_t nrb_hdr = NULL;
3178 struct wtap_pkthdr phdr;
3180 epan_dissect_t *edt = NULL;
3181 char *shb_user_appl;
3183 wtap_phdr_init(&phdr);
3185 idb_inf = wtap_file_get_idb_info(cf->wth);
3186 #ifdef PCAP_NG_DEFAULT
3187 if (idb_inf->interface_data->len > 1) {
3188 linktype = WTAP_ENCAP_PER_PACKET;
3190 linktype = wtap_file_encap(cf->wth);
3193 linktype = wtap_file_encap(cf->wth);
3195 if (save_file != NULL) {
3196 /* Get a string that describes what we're writing to */
3197 save_file_string = output_file_description(save_file);
3199 /* Set up to write to the capture file. */
3200 snapshot_length = wtap_snapshot_length(cf->wth);
3201 if (snapshot_length == 0) {
3202 /* Snapshot length of input file not known. */
3203 snapshot_length = WTAP_MAX_PACKET_SIZE;
3205 tshark_debug("tshark: snapshot_length = %d", snapshot_length);
3207 shb_hdr = wtap_file_get_shb_for_new_file(cf->wth);
3208 nrb_hdr = wtap_file_get_nrb_for_new_file(cf->wth);
3210 /* If we don't have an application name add Tshark */
3211 wtap_optionblock_get_option_string(shb_hdr, OPT_SHB_USERAPPL, &shb_user_appl);
3212 if (shb_user_appl == NULL) {
3213 /* this is free'd by wtap_optionblock_free() later */
3214 shb_user_appl = g_strdup_printf("TShark (Wireshark) %s", get_ws_vcs_version_info());
3215 wtap_optionblock_set_option_string(shb_hdr, OPT_SHB_USERAPPL, shb_user_appl);
3216 g_free(shb_user_appl);
3219 if (linktype != WTAP_ENCAP_PER_PACKET &&
3220 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3221 tshark_debug("tshark: writing PCAP format to %s", save_file);
3222 if (strcmp(save_file, "-") == 0) {
3223 /* Write to the standard output. */
3224 pdh = wtap_dump_open_stdout(out_file_type, linktype,
3225 snapshot_length, FALSE /* compressed */, &err);
3227 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3228 snapshot_length, FALSE /* compressed */, &err);
3232 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3233 if (strcmp(save_file, "-") == 0) {
3234 /* Write to the standard output. */
3235 pdh = wtap_dump_open_stdout_ng(out_file_type, linktype,
3236 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
3238 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3239 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
3247 /* We couldn't set up to write to the capture file. */
3250 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
3251 cmdarg_err("Capture files can't be written in that format.");
3254 case WTAP_ERR_UNWRITABLE_ENCAP:
3255 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3256 cmdarg_err("The capture file being read can't be written as a "
3257 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3260 case WTAP_ERR_CANT_OPEN:
3261 cmdarg_err("The %s couldn't be created for some "
3262 "unknown reason.", save_file_string);
3265 case WTAP_ERR_SHORT_WRITE:
3266 cmdarg_err("A full header couldn't be written to the %s.",
3271 cmdarg_err("The %s could not be created: %s.", save_file_string,
3272 wtap_strerror(err));
3278 if (print_packet_info) {
3279 if (!write_preamble(cf)) {
3281 show_print_file_io_error(err);
3290 /* Do we have any tap listeners with filters? */
3291 filtering_tap_listeners = have_filtering_tap_listeners();
3293 /* Get the union of the flags for all tap listeners. */
3294 tap_flags = union_of_tap_listener_flags();
3296 if (perform_two_pass_analysis) {
3299 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3301 /* Allocate a frame_data_sequence for all the frames. */
3302 cf->frames = new_frame_data_sequence();
3304 if (do_dissection) {
3305 gboolean create_proto_tree = FALSE;
3307 /* If we're going to be applying a filter, we'll need to
3308 create a protocol tree against which to apply the filter. */
3309 if (cf->rfcode || cf->dfcode)
3310 create_proto_tree = TRUE;
3312 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3314 /* We're not going to display the protocol tree on this pass,
3315 so it's not going to be "visible". */
3316 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3319 tshark_debug("tshark: reading records for first pass");
3320 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3321 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3322 wtap_buf_ptr(cf->wth))) {
3323 /* Stop reading if we have the maximum number of packets;
3324 * When the -c option has not been used, max_packet_count
3325 * starts at 0, which practically means, never stop reading.
3326 * (unless we roll over max_packet_count ?)
3328 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3329 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3330 max_packet_count, data_offset, max_byte_count);
3331 err = 0; /* This is not an error */
3338 epan_dissect_free(edt);
3342 /* Close the sequential I/O side, to free up memory it requires. */
3343 wtap_sequential_close(cf->wth);
3345 /* Allow the protocol dissectors to free up memory that they
3346 * don't need after the sequential run-through of the packets. */
3347 postseq_cleanup_all_protocols();
3351 ws_buffer_init(&buf, 1500);
3353 tshark_debug("tshark: done with first pass");
3355 if (do_dissection) {
3356 gboolean create_proto_tree;
3358 if (cf->dfcode || print_details || filtering_tap_listeners ||
3359 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3360 create_proto_tree = TRUE;
3362 create_proto_tree = FALSE;
3364 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3366 /* The protocol tree will be "visible", i.e., printed, only if we're
3367 printing packet details, which is true if we're printing stuff
3368 ("print_packet_info" is true) and we're in verbose mode
3369 ("packet_details" is true). */
3370 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3373 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3374 fdata = frame_data_sequence_find(cf->frames, framenum);
3375 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3377 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3378 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3380 /* Either there's no read filtering or this packet passed the
3381 filter, so, if we're writing to a capture file, write
3384 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3385 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3386 /* Error writing to a capture file */
3387 tshark_debug("tshark: error writing to a capture file (%d)", err);
3390 case WTAP_ERR_UNWRITABLE_ENCAP:
3392 * This is a problem with the particular frame we're writing
3393 * and the file type and subtype we're writing; note that,
3394 * and report the frame number and file type/subtype.
3396 * XXX - framenum is not necessarily the frame number in
3397 * the input file if there was a read filter.
3400 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3401 framenum, cf->filename,
3402 wtap_file_type_subtype_short_string(out_file_type));
3405 case WTAP_ERR_PACKET_TOO_LARGE:
3407 * This is a problem with the particular frame we're writing
3408 * and the file type and subtype we're writing; note that,
3409 * and report the frame number and file type/subtype.
3411 * XXX - framenum is not necessarily the frame number in
3412 * the input file if there was a read filter.
3415 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3416 framenum, cf->filename,
3417 wtap_file_type_subtype_short_string(out_file_type));
3420 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3422 * This is a problem with the particular record we're writing
3423 * and the file type and subtype we're writing; note that,
3424 * and report the record number and file type/subtype.
3426 * XXX - framenum is not necessarily the record number in
3427 * the input file if there was a read filter.
3430 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3431 framenum, cf->filename,
3432 wtap_file_type_subtype_short_string(out_file_type));
3435 case WTAP_ERR_UNWRITABLE_REC_DATA:
3437 * This is a problem with the particular record we're writing
3438 * and the file type and subtype we're writing; note that,
3439 * and report the record number and file type/subtype.
3441 * XXX - framenum is not necessarily the record number in
3442 * the input file if there was a read filter.
3445 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3446 framenum, cf->filename,
3447 wtap_file_type_subtype_short_string(out_file_type),
3448 err_info != NULL ? err_info : "no information supplied");
3453 show_capture_file_io_error(save_file, err, FALSE);
3456 wtap_dump_close(pdh, &err);
3457 wtap_optionblock_free(shb_hdr);
3458 wtap_optionblock_free(nrb_hdr);
3467 epan_dissect_free(edt);
3471 ws_buffer_free(&buf);
3473 tshark_debug("tshark: done with second pass");
3476 /* !perform_two_pass_analysis */
3479 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3481 if (do_dissection) {
3482 gboolean create_proto_tree;
3484 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3485 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3486 create_proto_tree = TRUE;
3488 create_proto_tree = FALSE;
3490 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3492 /* The protocol tree will be "visible", i.e., printed, only if we're
3493 printing packet details, which is true if we're printing stuff
3494 ("print_packet_info" is true) and we're in verbose mode
3495 ("packet_details" is true). */
3496 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3499 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3502 tshark_debug("tshark: processing packet #%d", framenum);
3504 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3505 wtap_buf_ptr(cf->wth),
3507 /* Either there's no read filtering or this packet passed the
3508 filter, so, if we're writing to a capture file, write
3511 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3512 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3513 /* Error writing to a capture file */
3514 tshark_debug("tshark: error writing to a capture file (%d)", err);
3517 case WTAP_ERR_UNWRITABLE_ENCAP:
3519 * This is a problem with the particular frame we're writing
3520 * and the file type and subtype we're writing; note that,
3521 * and report the frame number and file type/subtype.
3524 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3525 framenum, cf->filename,
3526 wtap_file_type_subtype_short_string(out_file_type));
3529 case WTAP_ERR_PACKET_TOO_LARGE:
3531 * This is a problem with the particular frame we're writing
3532 * and the file type and subtype we're writing; note that,
3533 * and report the frame number and file type/subtype.
3536 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3537 framenum, cf->filename,
3538 wtap_file_type_subtype_short_string(out_file_type));
3541 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3543 * This is a problem with the particular record we're writing
3544 * and the file type and subtype we're writing; note that,
3545 * and report the record number and file type/subtype.
3548 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3549 framenum, cf->filename,
3550 wtap_file_type_subtype_short_string(out_file_type));
3553 case WTAP_ERR_UNWRITABLE_REC_DATA:
3555 * This is a problem with the particular record we're writing
3556 * and the file type and subtype we're writing; note that,
3557 * and report the record number and file type/subtype.
3560 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3561 framenum, cf->filename,
3562 wtap_file_type_subtype_short_string(out_file_type),
3563 err_info != NULL ? err_info : "no information supplied");
3568 show_capture_file_io_error(save_file, err, FALSE);
3571 wtap_dump_close(pdh, &err);
3572 wtap_optionblock_free(shb_hdr);
3573 wtap_optionblock_free(nrb_hdr);
3578 /* Stop reading if we have the maximum number of packets;
3579 * When the -c option has not been used, max_packet_count
3580 * starts at 0, which practically means, never stop reading.
3581 * (unless we roll over max_packet_count ?)
3583 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3584 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3585 max_packet_count, data_offset, max_byte_count);
3586 err = 0; /* This is not an error */
3592 epan_dissect_free(edt);
3597 wtap_phdr_cleanup(&phdr);
3600 tshark_debug("tshark: something failed along the line (%d)", err);
3602 * Print a message noting that the read failed somewhere along the line.
3604 * If we're printing packet data, and the standard output and error are
3605 * going to the same place, flush the standard output, so everything
3606 * buffered up is written, and then print a newline to the standard error
3607 * before printing the error message, to separate it from the packet
3608 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3609 * the _fstat() documentation at Microsoft doesn't indicate whether
3610 * st_ino is even supported.)
3613 if (print_packet_info) {
3614 ws_statb64 stat_stdout, stat_stderr;
3616 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3617 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3618 stat_stdout.st_ino == stat_stderr.st_ino) {
3620 fprintf(stderr, "\n");
3627 case WTAP_ERR_UNSUPPORTED:
3628 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3630 err_info != NULL ? err_info : "no information supplied");
3634 case WTAP_ERR_SHORT_READ:
3635 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3639 case WTAP_ERR_BAD_FILE:
3640 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3642 err_info != NULL ? err_info : "no information supplied");
3646 case WTAP_ERR_DECOMPRESS:
3647 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3648 "(%s)", cf->filename,
3649 err_info != NULL ? err_info : "no information supplied");
3654 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3655 cf->filename, wtap_strerror(err));
3658 if (save_file != NULL) {
3659 /* Now close the capture file. */
3660 if (!wtap_dump_close(pdh, &err))
3661 show_capture_file_io_error(save_file, err, TRUE);
3664 if (save_file != NULL) {
3665 if (pdh && out_file_name_res) {
3666 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3667 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3668 wtap_file_type_subtype_short_string(out_file_type));
3671 /* Now close the capture file. */
3672 if (!wtap_dump_close(pdh, &err))
3673 show_capture_file_io_error(save_file, err, TRUE);
3675 if (print_packet_info) {
3676 if (!write_finale()) {
3678 show_print_file_io_error(err);
3685 wtap_close(cf->wth);
3688 g_free(save_file_string);
3689 wtap_optionblock_free(shb_hdr);
3690 wtap_optionblock_free(nrb_hdr);
3696 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3697 const guchar *pd, guint tap_flags)
3703 /* Count this packet. */
3706 /* If we're not running a display filter and we're not printing any
3707 packet information, we don't need to do a dissection. This means
3708 that all packets can be marked as 'passed'. */
3711 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3713 /* If we're going to print packet information, or we're going to
3714 run a read filter, or we're going to process taps, set up to
3715 do a dissection and do so. */
3717 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3718 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3719 /* Grab any resolved addresses */
3720 host_name_lookup_process();
3722 /* If we're running a filter, prime the epan_dissect_t with that
3725 epan_dissect_prime_dfilter(edt, cf->dfcode);
3727 col_custom_prime_edt(edt, &cf->cinfo);
3729 /* We only need the columns if either
3730 1) some tap needs the columns
3732 2) we're printing packet info but we're *not* verbose; in verbose
3733 mode, we print the protocol tree, not the protocol summary.
3735 3) there is a column mapped as an individual field */
3736 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3741 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3743 if (ref == &fdata) {
3748 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3750 /* Run the filter if we have it. */
3752 passed = dfilter_apply_edt(cf->dfcode, edt);
3756 frame_data_set_after_dissect(&fdata, &cum_bytes);
3758 /* Process this packet. */
3759 if (print_packet_info) {
3760 /* We're printing packet information; print the information for
3762 print_packet(cf, edt);
3764 /* The ANSI C standard does not appear to *require* that a line-buffered
3765 stream be flushed to the host environment whenever a newline is
3766 written, it just says that, on such a stream, characters "are
3767 intended to be transmitted to or from the host environment as a
3768 block when a new-line character is encountered".
3770 The Visual C++ 6.0 C implementation doesn't do what is intended;
3771 even if you set a stream to be line-buffered, it still doesn't
3772 flush the buffer at the end of every line.
3774 So, if the "-l" flag was specified, we flush the standard output
3775 at the end of a packet. This will do the right thing if we're
3776 printing packet summary lines, and, as we print the entire protocol
3777 tree for a single packet without waiting for anything to happen,
3778 it should be as good as line-buffered mode if we're printing
3779 protocol trees. (The whole reason for the "-l" flag in either
3780 tcpdump or TShark is to allow the output of a live capture to
3781 be piped to a program or script and to have that script see the
3782 information for the packet as soon as it's printed, rather than
3783 having to wait until a standard I/O buffer fills up. */
3787 if (ferror(stdout)) {
3788 show_print_file_io_error(errno);
3793 /* this must be set after print_packet() [bug #8160] */
3794 prev_dis_frame = fdata;
3795 prev_dis = &prev_dis_frame;
3798 prev_cap_frame = fdata;
3799 prev_cap = &prev_cap_frame;
3802 epan_dissect_reset(edt);
3803 frame_data_destroy(&fdata);
3809 write_preamble(capture_file *cf)
3811 switch (output_action) {
3814 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3818 write_pdml_preamble(stdout, cf->filename);
3820 write_psml_preamble(&cf->cinfo, stdout);
3821 return !ferror(stdout);
3824 write_fields_preamble(output_fields, stdout);
3825 return !ferror(stdout);
3828 g_assert_not_reached();
3834 get_line_buf(size_t len)
3836 static char *line_bufp = NULL;
3837 static size_t line_buf_len = 256;
3838 size_t new_line_buf_len;
3840 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3841 new_line_buf_len *= 2)
3843 if (line_bufp == NULL) {
3844 line_buf_len = new_line_buf_len;
3845 line_bufp = (char *)g_malloc(line_buf_len + 1);
3847 if (new_line_buf_len > line_buf_len) {
3848 line_buf_len = new_line_buf_len;
3849 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3856 put_string(char *dest, const char *str, size_t str_len)
3858 memcpy(dest, str, str_len);
3859 dest[str_len] = '\0';
3863 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3867 for (i = str_len; i < str_with_spaces; i++)
3870 put_string(dest, str, str_len);
3874 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3878 memcpy(dest, str, str_len);
3879 for (i = str_len; i < str_with_spaces; i++)
3882 dest[str_with_spaces] = '\0';
3886 print_columns(capture_file *cf)
3893 col_item_t* col_item;
3895 line_bufp = get_line_buf(256);
3898 for (i = 0; i < cf->cinfo.num_cols; i++) {
3899 col_item = &cf->cinfo.columns[i];
3900 /* Skip columns not marked as visible. */
3901 if (!get_column_visible(i))
3903 switch (col_item->col_fmt) {
3905 column_len = col_len = strlen(col_item->col_data);
3908 line_bufp = get_line_buf(buf_offset + column_len);
3909 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3915 case COL_ABS_YMD_TIME: /* XXX - wider */
3916 case COL_ABS_YDOY_TIME: /* XXX - wider */
3918 case COL_UTC_YMD_TIME: /* XXX - wider */
3919 case COL_UTC_YDOY_TIME: /* XXX - wider */
3920 column_len = col_len = strlen(col_item->col_data);
3921 if (column_len < 10)
3923 line_bufp = get_line_buf(buf_offset + column_len);
3924 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3930 case COL_DEF_DL_SRC:
3931 case COL_RES_DL_SRC:
3932 case COL_UNRES_DL_SRC:
3933 case COL_DEF_NET_SRC:
3934 case COL_RES_NET_SRC:
3935 case COL_UNRES_NET_SRC:
3936 column_len = col_len = strlen(col_item->col_data);
3937 if (column_len < 12)
3939 line_bufp = get_line_buf(buf_offset + column_len);
3940 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3946 case COL_DEF_DL_DST:
3947 case COL_RES_DL_DST:
3948 case COL_UNRES_DL_DST:
3949 case COL_DEF_NET_DST:
3950 case COL_RES_NET_DST:
3951 case COL_UNRES_NET_DST:
3952 column_len = col_len = strlen(col_item->col_data);
3953 if (column_len < 12)
3955 line_bufp = get_line_buf(buf_offset + column_len);
3956 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3960 column_len = strlen(col_item->col_data);
3961 line_bufp = get_line_buf(buf_offset + column_len);
3962 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3965 buf_offset += column_len;
3966 if (i != cf->cinfo.num_cols - 1) {
3968 * This isn't the last column, so we need to print a
3969 * separator between this column and the next.
3971 * If we printed a network source and are printing a
3972 * network destination of the same type next, separate
3973 * them with " -> "; if we printed a network destination
3974 * and are printing a network source of the same type
3975 * next, separate them with " <- "; otherwise separate them
3978 * We add enough space to the buffer for " <- " or " -> ",
3979 * even if we're only adding " ".
3981 line_bufp = get_line_buf(buf_offset + 4);
3982 switch (col_item->col_fmt) {
3987 switch (cf->cinfo.columns[i+1].col_fmt) {
3992 put_string(line_bufp + buf_offset, " -> ", 4);
3997 put_string(line_bufp + buf_offset, " ", 1);
4003 case COL_DEF_DL_SRC:
4004 case COL_RES_DL_SRC:
4005 case COL_UNRES_DL_SRC:
4006 switch (cf->cinfo.columns[i+1].col_fmt) {
4008 case COL_DEF_DL_DST:
4009 case COL_RES_DL_DST:
4010 case COL_UNRES_DL_DST:
4011 put_string(line_bufp + buf_offset, " -> ", 4);
4016 put_string(line_bufp + buf_offset, " ", 1);
4022 case COL_DEF_NET_SRC:
4023 case COL_RES_NET_SRC:
4024 case COL_UNRES_NET_SRC:
4025 switch (cf->cinfo.columns[i+1].col_fmt) {
4027 case COL_DEF_NET_DST:
4028 case COL_RES_NET_DST:
4029 case COL_UNRES_NET_DST:
4030 put_string(line_bufp + buf_offset, " -> ", 4);
4035 put_string(line_bufp + buf_offset, " ", 1);
4044 switch (cf->cinfo.columns[i+1].col_fmt) {
4049 put_string(line_bufp + buf_offset, " <- ", 4);
4054 put_string(line_bufp + buf_offset, " ", 1);
4060 case COL_DEF_DL_DST:
4061 case COL_RES_DL_DST:
4062 case COL_UNRES_DL_DST:
4063 switch (cf->cinfo.columns[i+1].col_fmt) {
4065 case COL_DEF_DL_SRC:
4066 case COL_RES_DL_SRC:
4067 case COL_UNRES_DL_SRC:
4068 put_string(line_bufp + buf_offset, " <- ", 4);
4073 put_string(line_bufp + buf_offset, " ", 1);
4079 case COL_DEF_NET_DST:
4080 case COL_RES_NET_DST:
4081 case COL_UNRES_NET_DST:
4082 switch (cf->cinfo.columns[i+1].col_fmt) {
4084 case COL_DEF_NET_SRC:
4085 case COL_RES_NET_SRC:
4086 case COL_UNRES_NET_SRC:
4087 put_string(line_bufp + buf_offset, " <- ", 4);
4092 put_string(line_bufp + buf_offset, " ", 1);
4099 put_string(line_bufp + buf_offset, " ", 1);
4105 return print_line(print_stream, 0, line_bufp);
4109 print_packet(capture_file *cf, epan_dissect_t *edt)
4111 print_args_t print_args;
4113 if (print_summary || output_fields_has_cols(output_fields)) {
4114 /* Just fill in the columns. */
4115 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
4117 if (print_summary) {
4118 /* Now print them. */
4119 switch (output_action) {
4122 if (!print_columns(cf))
4127 write_psml_columns(edt, stdout);
4128 return !ferror(stdout);
4129 case WRITE_FIELDS: /*No non-verbose "fields" format */
4130 g_assert_not_reached();
4135 if (print_details) {
4136 /* Print the information in the protocol tree. */
4137 switch (output_action) {
4140 /* Only initialize the fields that are actually used in proto_tree_print.
4141 * This is particularly important for .range, as that's heap memory which
4142 * we would otherwise have to g_free().
4143 print_args.to_file = TRUE;
4144 print_args.format = print_format;
4145 print_args.print_summary = print_summary;
4146 print_args.print_formfeed = FALSE;
4147 packet_range_init(&print_args.range, &cfile);
4149 print_args.print_hex = print_hex;
4150 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
4152 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
4155 if (!print_line(print_stream, 0, separator))
4161 write_pdml_proto_tree(edt, stdout);
4163 return !ferror(stdout);
4165 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
4167 return !ferror(stdout);
4171 if (print_summary || print_details) {
4172 if (!print_line(print_stream, 0, ""))
4175 if (!print_hex_data(print_stream, edt))
4177 if (!print_line(print_stream, 0, separator))
4186 switch (output_action) {
4189 return print_finale(print_stream);
4193 write_pdml_finale(stdout);
4195 write_psml_finale(stdout);
4196 return !ferror(stdout);
4199 write_fields_finale(output_fields, stdout);
4200 return !ferror(stdout);
4203 g_assert_not_reached();
4209 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4213 char err_msg[2048+1];
4215 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4219 /* The open succeeded. Fill in the information for this file. */
4221 /* Create new epan session for dissection. */
4222 epan_free(cf->epan);
4223 cf->epan = tshark_epan_new(cf);
4226 cf->f_datalen = 0; /* not used, but set it anyway */
4228 /* Set the file name because we need it to set the follow stream filter.
4229 XXX - is that still true? We need it for other reasons, though,
4231 cf->filename = g_strdup(fname);
4233 /* Indicate whether it's a permanent or temporary file. */
4234 cf->is_tempfile = is_tempfile;
4236 /* No user changes yet. */
4237 cf->unsaved_changes = FALSE;
4239 cf->cd_t = wtap_file_type_subtype(cf->wth);
4240 cf->open_type = type;
4242 cf->drops_known = FALSE;
4244 cf->snap = wtap_snapshot_length(cf->wth);
4245 if (cf->snap == 0) {
4246 /* Snapshot length not known. */
4247 cf->has_snap = FALSE;
4248 cf->snap = WTAP_MAX_PACKET_SIZE;
4250 cf->has_snap = TRUE;
4251 nstime_set_zero(&cf->elapsed_time);
4256 cf->state = FILE_READ_IN_PROGRESS;
4258 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4259 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4264 g_snprintf(err_msg, sizeof err_msg,
4265 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4266 cmdarg_err("%s", err_msg);
4271 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4273 char *save_file_string;
4275 save_file_string = output_file_description(fname);
4280 cmdarg_err("Not all the packets could be written to the %s because there is "
4281 "no space left on the file system.",
4287 cmdarg_err("Not all the packets could be written to the %s because you are "
4288 "too close to, or over your disk quota.",
4293 case WTAP_ERR_CANT_CLOSE:
4294 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4298 case WTAP_ERR_SHORT_WRITE:
4299 cmdarg_err("Not all the packets could be written to the %s.",
4305 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4306 wtap_strerror(err));
4308 cmdarg_err("An error occurred while writing to the %s: %s.",
4309 save_file_string, wtap_strerror(err));
4313 g_free(save_file_string);
4317 show_print_file_io_error(int err)
4322 cmdarg_err("Not all the packets could be printed because there is "
4323 "no space left on the file system.");
4328 cmdarg_err("Not all the packets could be printed because you are "
4329 "too close to, or over your disk quota.");
4334 cmdarg_err("An error occurred while printing packets: %s.",
4341 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4345 static char errmsg_errno[1024+1];
4348 /* Wiretap error. */
4351 case WTAP_ERR_NOT_REGULAR_FILE:
4352 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4355 case WTAP_ERR_RANDOM_OPEN_PIPE:
4356 /* Seen only when opening a capture file for reading. */
4357 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4360 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4361 /* Seen only when opening a capture file for reading. */
4362 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4365 case WTAP_ERR_UNSUPPORTED:
4366 /* Seen only when opening a capture file for reading. */
4367 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4368 "The file \"%%s\" contains record data that TShark doesn't support.\n"
4370 err_info != NULL ? err_info : "no information supplied");
4372 errmsg = errmsg_errno;
4375 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4376 /* Seen only when opening a capture file for writing. */
4377 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4378 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4379 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4380 errmsg = errmsg_errno;
4383 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
4384 /* Seen only when opening a capture file for writing. */
4385 errmsg = "TShark doesn't support writing capture files in that format.";
4388 case WTAP_ERR_UNWRITABLE_ENCAP:
4389 /* Seen only when opening a capture file for writing. */
4390 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4391 "TShark can't save this capture as a \"%s\" file.",
4392 wtap_file_type_subtype_short_string(file_type));
4393 errmsg = errmsg_errno;
4396 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4398 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4399 "TShark can't save this capture as a \"%s\" file.",
4400 wtap_file_type_subtype_short_string(file_type));
4401 errmsg = errmsg_errno;
4403 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4406 case WTAP_ERR_BAD_FILE:
4407 /* Seen only when opening a capture file for reading. */
4408 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4409 "The file \"%%s\" appears to be damaged or corrupt.\n"
4411 err_info != NULL ? err_info : "no information supplied");
4413 errmsg = errmsg_errno;
4416 case WTAP_ERR_CANT_OPEN:
4418 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4420 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4423 case WTAP_ERR_SHORT_READ:
4424 errmsg = "The file \"%s\" appears to have been cut short"
4425 " in the middle of a packet or other data.";
4428 case WTAP_ERR_SHORT_WRITE:
4429 errmsg = "A full header couldn't be written to the file \"%s\".";
4432 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4433 errmsg = "This file type cannot be written as a compressed file.";
4436 case WTAP_ERR_DECOMPRESS:
4437 /* Seen only when opening a capture file for reading. */
4438 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4439 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4441 err_info != NULL ? err_info : "no information supplied");
4443 errmsg = errmsg_errno;
4447 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4448 "The file \"%%s\" could not be %s: %s.",
4449 for_writing ? "created" : "opened",
4450 wtap_strerror(err));
4451 errmsg = errmsg_errno;
4455 errmsg = file_open_error_message(err, for_writing);
4460 * Open/create errors are reported with an console message in TShark.
4463 open_failure_message(const char *filename, int err, gboolean for_writing)
4465 fprintf(stderr, "tshark: ");
4466 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4467 fprintf(stderr, "\n");
4471 * General errors are reported with an console message in TShark.
4474 failure_message(const char *msg_format, va_list ap)
4476 fprintf(stderr, "tshark: ");
4477 vfprintf(stderr, msg_format, ap);
4478 fprintf(stderr, "\n");
4482 * Read errors are reported with an console message in TShark.
4485 read_failure_message(const char *filename, int err)
4487 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4488 filename, g_strerror(err));
4492 * Write errors are reported with an console message in TShark.
4495 write_failure_message(const char *filename, int err)
4497 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4498 filename, g_strerror(err));
4502 * Report additional information for an error in command-line arguments.
4505 failure_message_cont(const char *msg_format, va_list ap)
4507 vfprintf(stderr, msg_format, ap);
4508 fprintf(stderr, "\n");
4512 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4517 * indent-tabs-mode: nil
4520 * vi: set shiftwidth=2 tabstop=8 expandtab:
4521 * :indentSize=2:tabSize=8:noTabs=true: