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 * SPDX-License-Identifier: GPL-2.0-or-later
28 # include <winsock2.h>
36 # include <sys/capability.h>
39 #ifndef HAVE_GETOPT_LONG
40 #include "wsutil/wsgetopt.h"
45 #include <epan/exceptions.h>
46 #include <epan/epan.h>
48 #include <wsutil/clopts_common.h>
49 #include <wsutil/cmdarg_err.h>
50 #include <wsutil/crash_info.h>
51 #include <wsutil/filesystem.h>
52 #include <wsutil/file_util.h>
53 #include <wsutil/privileges.h>
54 #include <wsutil/report_message.h>
55 #include <version_info.h>
56 #include <wiretap/wtap_opttypes.h>
57 #include <wiretap/pcapng.h>
60 #include <epan/timestamp.h>
61 #include <epan/packet.h>
63 #include <epan/wslua/init_wslua.h>
65 #include "frame_tvbuff.h"
66 #include <epan/disabled_protos.h>
67 #include <epan/prefs.h>
68 #include <epan/column.h>
69 #include <epan/decode_as.h>
70 #include <epan/print.h>
71 #include <epan/addr_resolv.h>
73 #include "ui/capture_ui_utils.h"
77 #include "ui/ws_ui_util.h"
78 #include "ui/decode_as_utils.h"
79 #include "ui/filter_files.h"
80 #include "ui/cli/tshark-tap.h"
81 #include "ui/cli/tap-exportobject.h"
82 #include "ui/tap_export_pdu.h"
83 #include "ui/dissect_opts.h"
84 #include "ui/failure_message.h"
85 #if defined(HAVE_LIBSMI)
86 #include "epan/oids.h"
88 #include "epan/maxmind_db.h"
89 #include <epan/epan_dissect.h>
91 #include <epan/stat_tap_ui.h>
92 #include <epan/conversation_table.h>
93 #include <epan/srt_table.h>
94 #include <epan/rtd_table.h>
95 #include <epan/ex-opt.h>
96 #include <epan/exported_pdu.h>
98 #include "capture_opts.h"
100 #include "caputils/capture-pcap-util.h"
103 #include "caputils/capture_ifinfo.h"
105 #include "caputils/capture-wpcap.h"
106 #include <wsutil/unicode-utils.h>
108 #include <capchild/capture_session.h>
109 #include <capchild/capture_sync.h>
110 #include <capture_info.h>
111 #endif /* HAVE_LIBPCAP */
113 #include <epan/funnel.h>
115 #include <wsutil/str_util.h>
116 #include <wsutil/utf8_entities.h>
121 #include <wsutil/plugins.h>
125 #define INVALID_OPTION 1
126 #define INVALID_INTERFACE 2
127 #define INVALID_FILE 2
128 #define INVALID_FILTER 2
129 #define INVALID_EXPORT 2
130 #define INVALID_CAPABILITY 2
131 #define INVALID_TAP 2
132 #define INVALID_DATA_LINK 2
133 #define INVALID_TIMESTAMP_TYPE 2
134 #define INVALID_CAPTURE 2
135 #define INIT_FAILED 2
138 * values 128..65535 are capture+dissect options, 65536 is used by
139 * ui/commandline.c, so start tshark-specific options 1000 after this
141 #define LONGOPT_COLOR (65536+1000)
142 #define LONGOPT_NO_DUPLICATE_KEYS (65536+1001)
144 #define LONGOPT_ELASTIC_MAPPING_FILTER (65536+1002)
148 #define tshark_debug(...) g_warning(__VA_ARGS__)
150 #define tshark_debug(...)
155 static guint32 cum_bytes;
156 static frame_data ref_frame;
157 static frame_data prev_dis_frame;
158 static frame_data prev_cap_frame;
160 static gboolean perform_two_pass_analysis;
161 static guint32 epan_auto_reset_count = 0;
162 static gboolean epan_auto_reset = FALSE;
165 * The way the packet decode is to be written.
168 WRITE_TEXT, /* summary or detail text */
169 WRITE_XML, /* PDML or PSML */
170 WRITE_FIELDS, /* User defined list of fields */
171 WRITE_JSON, /* JSON */
172 WRITE_JSON_RAW, /* JSON only raw hex */
173 WRITE_EK /* JSON bulk insert to Elasticsearch */
174 /* Add CSV and the like here */
177 static output_action_e output_action;
178 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
179 static gboolean print_packet_info; /* TRUE if we're to print packet information */
180 static gboolean print_summary; /* TRUE if we're to print packet summary information */
181 static gboolean print_details; /* TRUE if we're to print packet details information */
182 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
183 static gboolean line_buffered;
184 static gboolean really_quiet = FALSE;
185 static gchar* delimiter_char = " ";
186 static gboolean dissect_color = FALSE;
188 static print_format_e print_format = PR_FMT_TEXT;
189 static print_stream_t *print_stream = NULL;
191 static output_fields_t* output_fields = NULL;
192 static gchar **protocolfilter = NULL;
193 static pf_flags protocolfilter_flags = PF_NONE;
195 static gboolean no_duplicate_keys = FALSE;
196 static proto_node_children_grouper_func node_children_grouper = proto_node_group_children_by_unique;
198 /* The line separator used between packets, changeable via the -S option */
199 static const char *separator = "";
201 static gboolean prefs_loaded = FALSE;
205 * TRUE if we're to print packet counts to keep track of captured packets.
207 static gboolean print_packet_counts;
209 static capture_options global_capture_opts;
210 static capture_session global_capture_session;
211 static info_data_t global_info_data;
214 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
215 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
218 static gboolean capture(void);
219 static void report_counts(void);
221 static BOOL WINAPI capture_cleanup(DWORD);
223 static void capture_cleanup(int);
225 static void report_counts_siginfo(int);
229 #else /* HAVE_LIBPCAP */
231 static char *output_file_name;
233 #endif /* HAVE_LIBPCAP */
235 static void reset_epan_mem(capture_file *cf, epan_dissect_t *edt, gboolean tree, gboolean visual);
236 static gboolean process_cap_file(capture_file *, char *, int, gboolean, int, gint64);
237 static gboolean process_packet_single_pass(capture_file *cf,
238 epan_dissect_t *edt, gint64 offset, wtap_rec *rec,
239 const guchar *pd, guint tap_flags);
240 static void show_print_file_io_error(int err);
241 static gboolean write_preamble(capture_file *cf);
242 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
243 static gboolean write_finale(void);
245 static void failure_warning_message(const char *msg_format, va_list ap);
246 static void open_failure_message(const char *filename, int err,
247 gboolean for_writing);
248 static void read_failure_message(const char *filename, int err);
249 static void write_failure_message(const char *filename, int err);
250 static void failure_message_cont(const char *msg_format, va_list ap);
252 static GHashTable *output_only_tables = NULL;
255 const char *sstr; /* The short string */
256 const char *lstr; /* The long string */
260 string_compare(gconstpointer a, gconstpointer b)
262 return strcmp(((const struct string_elem *)a)->sstr,
263 ((const struct string_elem *)b)->sstr);
267 string_elem_print(gpointer data)
269 fprintf(stderr, " %s - %s\n",
270 ((struct string_elem *)data)->sstr,
271 ((struct string_elem *)data)->lstr);
275 list_capture_types(void) {
277 struct string_elem *captypes;
280 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
282 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
283 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
284 if (wtap_dump_can_open(i)) {
285 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
286 captypes[i].lstr = wtap_file_type_subtype_string(i);
287 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
290 g_slist_free_full(list, string_elem_print);
295 list_read_capture_types(void) {
297 struct string_elem *captypes;
299 const char *magic = "Magic-value-based";
300 const char *heuristic = "Heuristics-based";
302 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
303 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
305 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
306 for (i = 0; open_routines[i].name != NULL; i++) {
307 captypes[i].sstr = open_routines[i].name;
308 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
309 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
311 g_slist_free_full(list, string_elem_print);
316 print_usage(FILE *output)
318 fprintf(output, "\n");
319 fprintf(output, "Usage: tshark [options] ...\n");
320 fprintf(output, "\n");
323 fprintf(output, "Capture interface:\n");
324 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
325 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
326 #ifdef HAVE_PCAP_CREATE
327 fprintf(output, " -s <snaplen> packet snapshot length (def: appropriate maximum)\n");
329 fprintf(output, " -s <snaplen> packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE_STANDARD);
331 fprintf(output, " -p don't capture in promiscuous mode\n");
332 #ifdef HAVE_PCAP_CREATE
333 fprintf(output, " -I capture in monitor mode, if available\n");
335 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
336 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
338 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
339 fprintf(output, " --time-stamp-type <type> timestamp method for interface\n");
340 fprintf(output, " -D print list of interfaces and exit\n");
341 fprintf(output, " -L print list of link-layer types of iface and exit\n");
342 fprintf(output, " --list-time-stamp-types print list of timestamp types for iface and exit\n");
343 fprintf(output, "\n");
344 fprintf(output, "Capture stop conditions:\n");
345 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
346 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
347 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
348 fprintf(output, " files:NUM - stop after NUM files\n");
349 /*fprintf(output, "\n");*/
350 fprintf(output, "Capture output:\n");
351 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
352 fprintf(output, " interval:NUM - create time intervals of NUM secs\n");
353 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
354 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
355 #endif /* HAVE_LIBPCAP */
356 #ifdef HAVE_PCAP_REMOTE
357 fprintf(output, "RPCAP options:\n");
358 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
360 /*fprintf(output, "\n");*/
361 fprintf(output, "Input file:\n");
362 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
364 fprintf(output, "\n");
365 fprintf(output, "Processing:\n");
366 fprintf(output, " -2 perform a two-pass analysis\n");
367 fprintf(output, " -M <packet count> perform session auto reset\n");
368 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
369 fprintf(output, " (requires -2)\n");
370 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
371 fprintf(output, " syntax\n");
372 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
373 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtdv\"\n");
374 fprintf(output, " -d %s ...\n", DECODE_AS_ARG_TEMPLATE);
375 fprintf(output, " \"Decode As\", see the man page for details\n");
376 fprintf(output, " Example: tcp.port==8888,http\n");
377 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
378 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
379 fprintf(output, " --enable-protocol <proto_name>\n");
380 fprintf(output, " enable dissection of proto_name\n");
381 fprintf(output, " --disable-protocol <proto_name>\n");
382 fprintf(output, " disable dissection of proto_name\n");
383 fprintf(output, " --enable-heuristic <short_name>\n");
384 fprintf(output, " enable dissection of heuristic protocol\n");
385 fprintf(output, " --disable-heuristic <short_name>\n");
386 fprintf(output, " disable dissection of heuristic protocol\n");
388 /*fprintf(output, "\n");*/
389 fprintf(output, "Output:\n");
390 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
391 fprintf(output, " (or to the standard output for \"-\")\n");
392 fprintf(output, " -C <config profile> start with specified configuration profile\n");
393 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
394 fprintf(output, " an empty \"-F\" option will list the file types\n");
395 fprintf(output, " -V add output of packet tree (Packet Details)\n");
396 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
397 fprintf(output, " separated\n");
398 fprintf(output, " -P print packet summary even when writing to a file\n");
399 fprintf(output, " -S <separator> the line separator to print between packets\n");
400 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
401 fprintf(output, " -T pdml|ps|psml|json|jsonraw|ek|tabs|text|fields|?\n");
402 fprintf(output, " format of text output (def: text)\n");
403 fprintf(output, " -j <protocolfilter> protocols layers filter if -T ek|pdml|json selected\n");
404 fprintf(output, " (e.g. \"ip ip.flags text\", filter does not expand child\n");
405 fprintf(output, " nodes, unless child is specified also in the filter)\n");
406 fprintf(output, " -J <protocolfilter> top level protocol filter if -T ek|pdml|json selected\n");
407 fprintf(output, " (e.g. \"http tcp\", filter which expands all child nodes)\n");
408 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
409 fprintf(output, " _ws.col.Info)\n");
410 fprintf(output, " this option can be repeated to print multiple fields\n");
411 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
412 fprintf(output, " bom=y|n print a UTF-8 BOM\n");
413 fprintf(output, " header=y|n switch headers on and off\n");
414 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
415 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
416 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
417 fprintf(output, " aggregator\n");
418 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
419 fprintf(output, " -t a|ad|d|dd|e|r|u|ud|? output format of time stamps (def: r: rel. to first)\n");
420 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
421 fprintf(output, " -l flush standard output after each packet\n");
422 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
423 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
424 fprintf(output, " -g enable group read access on the output file(s)\n");
425 fprintf(output, " -W n Save extra information in the file, if supported.\n");
426 fprintf(output, " n = write network address resolution information\n");
427 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
428 fprintf(output, " -U tap_name PDUs export mode, see the man page for details\n");
429 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
430 fprintf(output, " --capture-comment <comment>\n");
431 fprintf(output, " add a capture comment to the newly created\n");
432 fprintf(output, " output file (only for pcapng)\n");
433 fprintf(output, " --export-objects <protocol>,<destdir> save exported objects for a protocol to\n");
434 fprintf(output, " a directory named \"destdir\"\n");
435 fprintf(output, " --color color output text similarly to the Wireshark GUI,\n");
436 fprintf(output, " requires a terminal with 24-bit color support\n");
437 fprintf(output, " Also supplies color attributes to pdml and psml formats\n");
438 fprintf(output, " (Note that attributes are nonstandard)\n");
439 fprintf(output, " --no-duplicate-keys If -T json is specified, merge duplicate keys in an object\n");
440 fprintf(output, " into a single key with as value a json array containing all\n");
441 fprintf(output, " values\n");
443 fprintf(output, " --elastic-mapping-filter <protocols> If -G elastic-mapping is specified, put only the\n");
444 fprintf(output, " specified protocols within the mapping file\n");
447 fprintf(output, "\n");
448 fprintf(output, "Miscellaneous:\n");
449 fprintf(output, " -h display this help and exit\n");
450 fprintf(output, " -v display version info and exit\n");
451 fprintf(output, " -o <name>:<value> ... override preference setting\n");
452 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
453 fprintf(output, " -G [report] dump one of several available reports and exit\n");
454 fprintf(output, " default report=\"fields\"\n");
455 fprintf(output, " use \"-G help\" for more help\n");
457 fprintf(output, "\n");
458 fprintf(output, "Dumpcap can benefit from an enabled BPF JIT compiler if available.\n");
459 fprintf(output, "You might want to enable it by executing:\n");
460 fprintf(output, " \"echo 1 > /proc/sys/net/core/bpf_jit_enable\"\n");
461 fprintf(output, "Note that this can make your system less secure!\n");
467 glossary_option_help(void)
473 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
475 fprintf(output, "\n");
476 fprintf(output, "Usage: tshark -G [report]\n");
477 fprintf(output, "\n");
478 fprintf(output, "Glossary table reports:\n");
479 fprintf(output, " -G column-formats dump column format codes and exit\n");
480 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
481 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
483 fprintf(output, " -G elastic-mapping dump ElasticSearch mapping file\n");
485 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
486 fprintf(output, " -G fields dump fields glossary and exit\n");
487 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
488 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
489 fprintf(output, " -G plugins dump installed plugins and exit\n");
490 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
491 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
492 fprintf(output, "\n");
493 fprintf(output, "Preference reports:\n");
494 fprintf(output, " -G currentprefs dump current preferences and exit\n");
495 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
496 fprintf(output, " -G folders dump about:folders\n");
497 fprintf(output, "\n");
501 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
502 const gchar *message, gpointer user_data)
504 /* ignore log message, if log_level isn't interesting based
505 upon the console log preferences.
506 If the preferences haven't been loaded yet, display the
509 The default console_log_level preference value is such that only
510 ERROR, CRITICAL and WARNING level messages are processed;
511 MESSAGE, INFO and DEBUG level messages are ignored.
513 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
514 ERROR and CRITICAL level messages so the current code is a behavioral
515 change. The current behavior is the same as in Wireshark.
517 if (prefs_loaded && (log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0) {
521 g_log_default_handler(log_domain, log_level, message, user_data);
526 print_current_user(void) {
527 gchar *cur_user, *cur_group;
529 if (started_with_special_privs()) {
530 cur_user = get_cur_username();
531 cur_group = get_cur_groupname();
532 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
533 cur_user, cur_group);
536 if (running_with_special_privs()) {
537 fprintf(stderr, " This could be dangerous.");
539 fprintf(stderr, "\n");
544 get_tshark_compiled_version_info(GString *str)
546 /* Capture libraries */
547 get_compiled_caplibs_version(str);
551 get_tshark_runtime_version_info(GString *str)
554 /* Capture libraries */
555 g_string_append(str, ", ");
556 get_runtime_caplibs_version(str);
559 /* stuff used by libwireshark */
560 epan_get_runtime_version_info(str);
566 const char *constpath;
574 * Fetching the "File" dialogs folder not implemented.
575 * This is arguably just a pwd for a ui/cli .
579 printf("%-21s\t%s\n", "Temp:", g_get_tmp_dir());
582 path = get_persconffile_path("", FALSE);
583 printf("%-21s\t%s\n", "Personal configuration:", path);
587 constpath = get_datafile_dir();
588 if (constpath != NULL) {
589 printf("%-21s\t%s\n", "Global configuration:", constpath);
593 constpath = get_systemfile_dir();
594 printf("%-21s\t%s\n", "System:", constpath);
597 constpath = get_progfile_dir();
598 printf("%-21s\t%s\n", "Program:", constpath);
602 printf("%-21s\t%s\n", "Personal Plugins:", get_plugins_pers_dir_with_version());
605 printf("%-21s\t%s\n", "Global Plugins:", get_plugins_dir_with_version());
609 /* pers lua plugins */
610 printf("%-21s\t%s\n", "Personal Lua Plugins:", get_plugins_pers_dir());
612 /* global lua plugins */
613 printf("%-21s\t%s\n", "Global Lua Plugins:", get_plugins_dir());
617 constpath = get_extcap_dir();
619 resultArray = g_strsplit(constpath, G_SEARCHPATH_SEPARATOR_S, 10);
620 for(i = 0; resultArray[i]; i++)
621 printf("%-21s\t%s\n", "Extcap path:", g_strstrip(resultArray[i]));
623 g_strfreev(resultArray);
626 path = maxmind_db_get_paths();
628 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 10);
630 for(i = 0; resultArray[i]; i++)
631 printf("%-21s\t%s\n", "MaxMind database path:", g_strstrip(resultArray[i]));
633 g_strfreev(resultArray);
638 path = oid_get_default_mib_path();
640 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 20);
642 for(i = 0; resultArray[i]; i++)
643 printf("%-21s\t%s\n", "MIB/PIB path:", g_strstrip(resultArray[i]));
645 g_strfreev(resultArray);
652 must_do_dissection(dfilter_t *rfcode, dfilter_t *dfcode,
653 gchar *volatile pdu_export_arg)
655 /* We have to dissect each packet if:
657 we're printing information about each packet;
659 we're using a read filter on the packets;
661 we're using a display filter on the packets;
663 we're exporting PDUs;
665 we're using any taps that need dissection. */
666 return print_packet_info || rfcode || dfcode || pdu_export_arg ||
667 tap_listeners_require_dissection() || dissect_color;
671 real_main(int argc, char *argv[])
673 GString *comp_info_str;
674 GString *runtime_info_str;
675 char *init_progfile_dir_error;
677 static const struct option long_options[] = {
678 {"help", no_argument, NULL, 'h'},
679 {"version", no_argument, NULL, 'v'},
680 LONGOPT_CAPTURE_COMMON
681 LONGOPT_DISSECT_COMMON
682 {"print", no_argument, NULL, 'P'},
683 {"export-objects", required_argument, NULL, LONGOPT_EXPORT_OBJECTS},
684 {"color", no_argument, NULL, LONGOPT_COLOR},
685 {"no-duplicate-keys", no_argument, NULL, LONGOPT_NO_DUPLICATE_KEYS},
687 {"elastic-mapping-filter", required_argument, NULL, LONGOPT_ELASTIC_MAPPING_FILTER},
691 gboolean arg_error = FALSE;
699 volatile gboolean success;
700 volatile int exit_status = EXIT_SUCCESS;
702 int caps_queries = 0;
703 gboolean start_capture = FALSE;
707 gboolean capture_option_specified = FALSE;
709 gboolean quiet = FALSE;
710 #ifdef PCAP_NG_DEFAULT
711 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
713 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
715 volatile gboolean out_file_name_res = FALSE;
716 volatile int in_file_type = WTAP_TYPE_AUTO;
717 gchar *volatile cf_name = NULL;
718 gchar *rfilter = NULL;
719 gchar *dfilter = NULL;
720 #ifdef HAVE_PCAP_OPEN_DEAD
721 struct bpf_program fcode;
723 dfilter_t *rfcode = NULL;
724 dfilter_t *dfcode = NULL;
728 gchar *output_only = NULL;
729 gchar *volatile pdu_export_arg = NULL;
730 char *volatile exp_pdu_filename = NULL;
731 exp_pdu_t exp_pdu_tap_data;
733 const gchar* elastic_mapping_filter = NULL;
737 * The leading + ensures that getopt_long() does not permute the argv[]
740 * We have to make sure that the first getopt_long() preserves the content
741 * of argv[] for the subsequent getopt_long() call.
743 * We use getopt_long() in both cases to ensure that we're using a routine
744 * whose permutation behavior we can control in the same fashion on all
745 * platforms, and so that, if we ever need to process a long argument before
746 * doing further initialization, we can do so.
748 * Glibc and Solaris libc document that a leading + disables permutation
749 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
750 * and macOS don't document it, but do so anyway.
752 * We do *not* use a leading - because the behavior of a leading - is
753 * platform-dependent.
755 #define OPTSTRING "+2" OPTSTRING_CAPTURE_COMMON OPTSTRING_DISSECT_COMMON "M:C:e:E:F:gG:hH:j:J:lo:O:PqQr:R:S:T:U:vVw:W:xX:Y:z:"
757 static const char optstring[] = OPTSTRING;
759 tshark_debug("tshark started with %d args", argc);
761 /* Set the C-language locale to the native environment. */
762 setlocale(LC_ALL, "");
764 cmdarg_err_init(failure_warning_message, failure_message_cont);
767 create_app_running_mutex();
771 * Get credential information for later use, and drop privileges
772 * before doing anything else.
773 * Let the user know if anything happened.
775 init_process_policies();
776 relinquish_special_privs_perm();
777 print_current_user();
780 * Attempt to get the pathname of the directory containing the
783 init_progfile_dir_error = init_progfile_dir(argv[0]);
784 if (init_progfile_dir_error != NULL) {
786 "tshark: Can't get pathname of directory containing the tshark program: %s.\n"
787 "It won't be possible to capture traffic.\n"
788 "Report this to the Wireshark developers.",
789 init_progfile_dir_error);
790 g_free(init_progfile_dir_error);
793 initialize_funnel_ops();
796 ws_init_dll_search_path();
798 /* Load wpcap if possible. Do this before collecting the run-time version information */
800 #endif /* HAVE_LIBPCAP */
803 /* Get the compile-time version information string */
804 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
805 epan_get_compiled_version_info);
807 /* Get the run-time version information string */
808 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
810 /* Add it to the information to be reported on a crash. */
811 ws_add_crash_info("TShark (Wireshark) %s\n"
816 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
817 g_string_free(comp_info_str, TRUE);
818 g_string_free(runtime_info_str, TRUE);
820 /* Fail sometimes. Useful for testing fuzz scripts. */
821 /* if (g_random_int_range(0, 100) < 5) abort(); */
824 * In order to have the -X opts assigned before the wslua machine starts
825 * we need to call getopt_long before epan_init() gets called.
827 * In order to handle, for example, -o options, we also need to call it
828 * *after* epan_init() gets called, so that the dissectors have had a
829 * chance to register their preferences.
831 * XXX - can we do this all with one getopt_long() call, saving the
832 * arguments we can't handle until after initializing libwireshark,
833 * and then process them after initializing libwireshark?
837 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
839 case 'C': /* Configuration Profile */
840 if (profile_exists (optarg, FALSE)) {
841 set_profile_name (optarg);
843 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
844 exit_status = INVALID_OPTION;
848 case 'P': /* Print packet summary info even when writing to a file */
849 print_packet_info = TRUE;
850 print_summary = TRUE;
852 case 'O': /* Only output these protocols */
853 output_only = g_strdup(optarg);
855 case 'V': /* Verbose */
856 print_details = TRUE;
857 print_packet_info = TRUE;
859 case 'x': /* Print packet data in hex (and ASCII) */
861 /* The user asked for hex output, so let's ensure they get it,
862 * even if they're writing to a file.
864 print_packet_info = TRUE;
870 case LONGOPT_ELASTIC_MAPPING_FILTER:
871 elastic_mapping_filter = optarg;
879 /** Send All g_log messages to our own handler **/
883 G_LOG_LEVEL_CRITICAL|
888 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
890 g_log_set_handler(NULL,
891 (GLogLevelFlags)log_flags,
892 tshark_log_handler, NULL /* user_data */);
893 g_log_set_handler(LOG_DOMAIN_MAIN,
894 (GLogLevelFlags)log_flags,
895 tshark_log_handler, NULL /* user_data */);
898 g_log_set_handler(LOG_DOMAIN_CAPTURE,
899 (GLogLevelFlags)log_flags,
900 tshark_log_handler, NULL /* user_data */);
901 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
902 (GLogLevelFlags)log_flags,
903 tshark_log_handler, NULL /* user_data */);
906 init_report_message(failure_warning_message, failure_warning_message,
907 open_failure_message, read_failure_message,
908 write_failure_message);
911 capture_opts_init(&global_capture_opts);
912 capture_session_init(&global_capture_session, &cfile);
915 timestamp_set_type(TS_RELATIVE);
916 timestamp_set_precision(TS_PREC_AUTO);
917 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
921 /* Register all dissectors; we must do this before checking for the
922 "-G" flag, as the "-G" flag dumps information registered by the
923 dissectors, and we must do it before we read the preferences, in
924 case any dissectors register preferences. */
925 if (!epan_init(NULL, NULL, TRUE)) {
926 exit_status = INIT_FAILED;
930 /* Register all tap listeners; we do this before we parse the arguments,
931 as the "-z" argument can specify a registered tap. */
933 /* we register the plugin taps before the other taps because
934 stats_tree taps plugins will be registered as tap listeners
935 by stats_tree_stat.c and need to registered before that */
937 register_all_plugin_tap_listeners();
939 extcap_register_preferences();
940 /* Register all tap listeners. */
941 for (tap_reg_t *t = tap_reg_listener; t->cb_func != NULL; t++) {
944 conversation_table_set_gui_info(init_iousers);
945 hostlist_table_set_gui_info(init_hostlists);
946 srt_table_iterate_tables(register_srt_tables, NULL);
947 rtd_table_iterate_tables(register_rtd_tables, NULL);
948 stat_tap_iterate_tables(register_simple_stat_tables, NULL);
950 /* If invoked with the "-G" flag, we dump out information based on
951 the argument to the "-G" flag; if no argument is specified,
952 for backwards compatibility we dump out a glossary of display
955 XXX - we do this here, for now, to support "-G" with no arguments.
956 If none of our build or other processes uses "-G" with no arguments,
957 we can just process it with the other arguments. */
958 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
959 proto_initialize_all_prefixes();
962 proto_registrar_dump_fields();
964 if (strcmp(argv[2], "column-formats") == 0)
965 column_dump_column_formats();
966 else if (strcmp(argv[2], "currentprefs") == 0) {
967 epan_load_settings();
970 else if (strcmp(argv[2], "decodes") == 0)
971 dissector_dump_decodes();
972 else if (strcmp(argv[2], "defaultprefs") == 0)
974 else if (strcmp(argv[2], "dissector-tables") == 0)
975 dissector_dump_dissector_tables();
977 else if (strcmp(argv[2], "elastic-mapping") == 0)
978 proto_registrar_dump_elastic(elastic_mapping_filter);
980 else if (strcmp(argv[2], "fieldcount") == 0) {
981 /* return value for the test suite */
982 exit_status = proto_registrar_dump_fieldcount();
984 } else if (strcmp(argv[2], "fields") == 0)
985 proto_registrar_dump_fields();
986 else if (strcmp(argv[2], "folders") == 0) {
987 epan_load_settings();
989 } else if (strcmp(argv[2], "ftypes") == 0)
990 proto_registrar_dump_ftypes();
991 else if (strcmp(argv[2], "heuristic-decodes") == 0)
992 dissector_dump_heur_decodes();
993 else if (strcmp(argv[2], "plugins") == 0) {
998 wslua_plugins_dump_all();
1001 else if (strcmp(argv[2], "protocols") == 0)
1002 proto_registrar_dump_protocols();
1003 else if (strcmp(argv[2], "values") == 0)
1004 proto_registrar_dump_values();
1005 else if (strcmp(argv[2], "help") == 0)
1006 glossary_option_help();
1007 /* These are supported only for backwards compatibility and may or may not work
1008 * for a given user in a given directory on a given operating system with a given
1009 * command-line interpreter.
1011 else if (strcmp(argv[2], "?") == 0)
1012 glossary_option_help();
1013 else if (strcmp(argv[2], "-?") == 0)
1014 glossary_option_help();
1016 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G help for more help.", argv[2]);
1017 exit_status = INVALID_OPTION;
1021 exit_status = EXIT_SUCCESS;
1025 tshark_debug("tshark reading settings");
1027 /* Load libwireshark settings from the current profile. */
1028 prefs_p = epan_load_settings();
1029 prefs_loaded = TRUE;
1031 read_filter_list(CFILTER_LIST);
1033 cap_file_init(&cfile);
1035 /* Print format defaults to this. */
1036 print_format = PR_FMT_TEXT;
1037 delimiter_char = " ";
1039 output_fields = output_fields_new();
1042 * To reset the options parser, set optreset to 1 on platforms that
1043 * have optreset (documented in *BSD and macOS, apparently present but
1044 * not documented in Solaris - the Illumos repository seems to
1045 * suggest that the first Solaris getopt_long(), at least as of 2004,
1046 * was based on the NetBSD one, it had optreset) and set optind to 1,
1047 * and set optind to 0 otherwise (documented as working in the GNU
1048 * getopt_long(). Setting optind to 0 didn't originally work in the
1049 * NetBSD one, but that was added later - we don't want to depend on
1050 * it if we have optreset).
1052 * Also reset opterr to 1, so that error messages are printed by
1055 #ifdef HAVE_OPTRESET
1063 /* Now get our args */
1064 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1066 case '2': /* Perform two pass analysis */
1067 if(epan_auto_reset){
1068 cmdarg_err("-2 does not support auto session reset.");
1071 perform_two_pass_analysis = TRUE;
1074 if(perform_two_pass_analysis){
1075 cmdarg_err("-M does not support two pass analysis.");
1078 epan_auto_reset_count = get_positive_int(optarg, "epan reset count");
1079 epan_auto_reset = TRUE;
1081 case 'a': /* autostop criteria */
1082 case 'b': /* Ringbuffer option */
1083 case 'c': /* Capture x packets */
1084 case 'f': /* capture filter */
1085 case 'g': /* enable group read access on file(s) */
1086 case 'i': /* Use interface x */
1087 case LONGOPT_SET_TSTAMP_TYPE: /* Set capture timestamp type */
1088 case 'p': /* Don't capture in promiscuous mode */
1089 #ifdef HAVE_PCAP_REMOTE
1090 case 'A': /* Authentication */
1092 #ifdef HAVE_PCAP_CREATE
1093 case 'I': /* Capture in monitor mode, if available */
1095 case 's': /* Set the snapshot (capture) length */
1096 case 'w': /* Write to capture file x */
1097 case 'y': /* Set the pcap data link type */
1098 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1099 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1100 case 'B': /* Buffer size */
1103 exit_status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1104 if (exit_status != 0) {
1110 * Output file name, if we're reading a file and writing to another
1113 output_file_name = g_strdup(optarg);
1115 capture_option_specified = TRUE;
1121 /* already processed; just ignore it now */
1123 case 'D': /* Print a list of capture devices and exit */
1125 if_list = capture_interface_list(&err, &err_str,NULL);
1126 if (if_list == NULL) {
1128 cmdarg_err("There are no interfaces on which a capture can be done");
1130 cmdarg_err("%s", err_str);
1133 exit_status = INVALID_INTERFACE;
1136 capture_opts_print_interfaces(if_list);
1137 free_interface_list(if_list);
1138 exit_status = EXIT_SUCCESS;
1141 capture_option_specified = TRUE;
1147 output_fields_add(output_fields, optarg);
1151 if (!output_fields_set_option(output_fields, optarg)) {
1152 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1153 output_fields_list_options(stderr);
1154 exit_status = INVALID_OPTION;
1159 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1160 if (out_file_type < 0) {
1161 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1162 list_capture_types();
1163 exit_status = INVALID_OPTION;
1168 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1171 protocolfilter_flags = PF_INCLUDE_CHILDREN;
1172 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1174 case 'W': /* Select extra information to save in our capture file */
1175 /* This is patterned after the -N flag which may not be the best idea. */
1176 if (strchr(optarg, 'n')) {
1177 out_file_name_res = TRUE;
1179 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1180 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1181 exit_status = INVALID_OPTION;
1185 case 'H': /* Read address to name mappings from a hosts file */
1186 if (! add_hosts_file(optarg))
1188 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1189 exit_status = INVALID_OPTION;
1192 out_file_name_res = TRUE;
1195 case 'h': /* Print help and exit */
1196 printf("TShark (Wireshark) %s\n"
1197 "Dump and analyze network traffic.\n"
1198 "See https://www.wireshark.org for more information.\n",
1199 get_ws_vcs_version_info());
1200 print_usage(stdout);
1201 exit_status = EXIT_SUCCESS;
1204 case 'l': /* "Line-buffer" standard output */
1205 /* The ANSI C standard does not appear to *require* that a line-buffered
1206 stream be flushed to the host environment whenever a newline is
1207 written, it just says that, on such a stream, characters "are
1208 intended to be transmitted to or from the host environment as a
1209 block when a new-line character is encountered".
1211 The Visual C++ 6.0 C implementation doesn't do what is intended;
1212 even if you set a stream to be line-buffered, it still doesn't
1213 flush the buffer at the end of every line.
1215 The whole reason for the "-l" flag in either tcpdump or TShark
1216 is to allow the output of a live capture to be piped to a program
1217 or script and to have that script see the information for the
1218 packet as soon as it's printed, rather than having to wait until
1219 a standard I/O buffer fills up.
1221 So, if the "-l" flag is specified, we flush the standard output
1222 at the end of a packet. This will do the right thing if we're
1223 printing packet summary lines, and, as we print the entire protocol
1224 tree for a single packet without waiting for anything to happen,
1225 it should be as good as line-buffered mode if we're printing
1226 protocol trees - arguably even better, as it may do fewer
1228 line_buffered = TRUE;
1230 case 'L': /* Print list of link-layer types and exit */
1232 caps_queries |= CAPS_QUERY_LINK_TYPES;
1234 capture_option_specified = TRUE;
1238 case LONGOPT_LIST_TSTAMP_TYPES: /* List possible timestamp types */
1240 caps_queries |= CAPS_QUERY_TIMESTAMP_TYPES;
1242 capture_option_specified = TRUE;
1246 case 'o': /* Override preference from command line */
1248 char *errmsg = NULL;
1250 switch (prefs_set_pref(optarg, &errmsg)) {
1255 case PREFS_SET_SYNTAX_ERR:
1256 cmdarg_err("Invalid -o flag \"%s\"%s%s", optarg,
1257 errmsg ? ": " : "", errmsg ? errmsg : "");
1259 exit_status = INVALID_OPTION;
1263 case PREFS_SET_NO_SUCH_PREF:
1264 case PREFS_SET_OBSOLETE:
1265 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1266 exit_status = INVALID_OPTION;
1272 case 'q': /* Quiet */
1275 case 'Q': /* Really quiet */
1277 really_quiet = TRUE;
1279 case 'r': /* Read capture file x */
1280 cf_name = g_strdup(optarg);
1282 case 'R': /* Read file filter */
1286 /* already processed; just ignore it now */
1288 case 'S': /* Set the line Separator to be printed between packets */
1291 case 'T': /* printing Type */
1292 print_packet_info = TRUE;
1293 if (strcmp(optarg, "text") == 0) {
1294 output_action = WRITE_TEXT;
1295 print_format = PR_FMT_TEXT;
1296 } else if (strcmp(optarg, "tabs") == 0) {
1297 output_action = WRITE_TEXT;
1298 print_format = PR_FMT_TEXT;
1299 delimiter_char = "\t";
1300 } else if (strcmp(optarg, "ps") == 0) {
1301 output_action = WRITE_TEXT;
1302 print_format = PR_FMT_PS;
1303 } else if (strcmp(optarg, "pdml") == 0) {
1304 output_action = WRITE_XML;
1305 print_details = TRUE; /* Need details */
1306 print_summary = FALSE; /* Don't allow summary */
1307 } else if (strcmp(optarg, "psml") == 0) {
1308 output_action = WRITE_XML;
1309 print_details = FALSE; /* Don't allow details */
1310 print_summary = TRUE; /* Need summary */
1311 } else if (strcmp(optarg, "fields") == 0) {
1312 output_action = WRITE_FIELDS;
1313 print_details = TRUE; /* Need full tree info */
1314 print_summary = FALSE; /* Don't allow summary */
1315 } else if (strcmp(optarg, "json") == 0) {
1316 output_action = WRITE_JSON;
1317 print_details = TRUE; /* Need details */
1318 print_summary = FALSE; /* Don't allow summary */
1319 } else if (strcmp(optarg, "ek") == 0) {
1320 output_action = WRITE_EK;
1322 print_details = TRUE;
1323 } else if (strcmp(optarg, "jsonraw") == 0) {
1324 output_action = WRITE_JSON_RAW;
1325 print_details = TRUE; /* Need details */
1326 print_summary = FALSE; /* Don't allow summary */
1329 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1330 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1331 "\t specified by the -E option.\n"
1332 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1333 "\t details of a decoded packet. This information is equivalent to\n"
1334 "\t the packet details printed with the -V flag.\n"
1335 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1336 "\t the packets, or a multi-line view of the details of each of\n"
1337 "\t the packets, depending on whether the -V flag was specified.\n"
1338 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1339 "\t summary information of a decoded packet. This information is\n"
1340 "\t equivalent to the information shown in the one-line summary\n"
1341 "\t printed by default.\n"
1342 "\t\"json\" Packet Summary, an JSON-based format for the details\n"
1343 "\t summary information of a decoded packet. This information is \n"
1344 "\t equivalent to the packet details printed with the -V flag.\n"
1345 "\t\"jsonraw\" Packet Details, a JSON-based format for machine parsing\n"
1346 "\t including only raw hex decoded fields (same as -T json -x but\n"
1347 "\t without text decoding, only raw fields included). \n"
1348 "\t\"ek\" Packet Details, an EK JSON-based format for the bulk insert \n"
1349 "\t into elastic search cluster. This information is \n"
1350 "\t equivalent to the packet details printed with the -V flag.\n"
1351 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1352 "\t packets, or a multi-line view of the details of each of the\n"
1353 "\t packets, depending on whether the -V flag was specified.\n"
1354 "\t This is the default.\n"
1355 "\t\"tabs\" Similar to the text report except that each column of the\n"
1356 "\t human-readable one-line summary is delimited with an ASCII\n"
1357 "\t horizontal tab character.");
1358 exit_status = INVALID_OPTION;
1362 case 'U': /* Export PDUs to file */
1364 GSList *export_pdu_tap_name_list = NULL;
1367 cmdarg_err("A tap name is required. Valid names are:");
1368 for (export_pdu_tap_name_list = get_export_pdu_tap_list(); export_pdu_tap_name_list; export_pdu_tap_name_list = g_slist_next(export_pdu_tap_name_list)) {
1369 cmdarg_err("%s\n", (const char*)(export_pdu_tap_name_list->data));
1371 exit_status = INVALID_OPTION;
1374 pdu_export_arg = g_strdup(optarg);
1377 case 'v': /* Show version and exit */
1378 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1379 epan_get_compiled_version_info);
1380 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1381 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1382 g_string_free(comp_info_str, TRUE);
1383 g_string_free(runtime_info_str, TRUE);
1384 /* We don't really have to cleanup here, but it's a convenient way to test
1385 * start-up and shut-down of the epan library without any UI-specific
1386 * cruft getting in the way. Makes the results of running
1387 * $ ./tools/valgrind-wireshark -n
1388 * much more useful. */
1391 exit_status = EXIT_SUCCESS;
1393 case 'O': /* Only output these protocols */
1394 /* already processed; just ignore it now */
1396 case 'V': /* Verbose */
1397 /* already processed; just ignore it now */
1399 case 'x': /* Print packet data in hex (and ASCII) */
1400 /* already processed; just ignore it now */
1403 /* already processed; just ignore it now */
1409 /* We won't call the init function for the stat this soon
1410 as it would disallow MATE's fields (which are registered
1411 by the preferences set callback) from being used as
1412 part of a tap filter. Instead, we just add the argument
1413 to a list of stat arguments. */
1414 if (strcmp("help", optarg) == 0) {
1415 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1416 list_stat_cmd_args();
1417 exit_status = EXIT_SUCCESS;
1420 if (!process_stat_cmd_arg(optarg)) {
1421 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1422 list_stat_cmd_args();
1423 exit_status = INVALID_OPTION;
1427 case 'd': /* Decode as rule */
1428 case 'K': /* Kerberos keytab file */
1429 case 'n': /* No name resolution */
1430 case 'N': /* Select what types of addresses/port #s to resolve */
1431 case 't': /* Time stamp type */
1432 case 'u': /* Seconds type */
1433 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1434 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1435 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1436 case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
1437 if (!dissect_opts_handle_opt(opt, optarg)) {
1438 exit_status = INVALID_OPTION;
1442 case LONGOPT_EXPORT_OBJECTS: /* --export-objects */
1443 if (strcmp("help", optarg) == 0) {
1444 fprintf(stderr, "tshark: The available export object types for the \"--export-objects\" option are:\n");
1445 eo_list_object_types();
1446 exit_status = EXIT_SUCCESS;
1449 if (!eo_tap_opt_add(optarg)) {
1450 exit_status = INVALID_OPTION;
1454 case LONGOPT_COLOR: /* print in color where appropriate */
1455 dissect_color = TRUE;
1457 case LONGOPT_NO_DUPLICATE_KEYS:
1458 no_duplicate_keys = TRUE;
1459 node_children_grouper = proto_node_group_children_by_json_key;
1462 case '?': /* Bad flag - print usage message */
1465 list_capture_types();
1468 print_usage(stderr);
1470 exit_status = INVALID_OPTION;
1477 * Print packet summary information is the default if neither -V or -x
1478 * were specified. Note that this is new behavior, which allows for the
1479 * possibility of printing only hex/ascii output without necessarily
1480 * requiring that either the summary or details be printed too.
1482 if (!print_summary && !print_details && !print_hex)
1483 print_summary = TRUE;
1485 if (no_duplicate_keys && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW) {
1486 cmdarg_err("--no-duplicate-keys can only be used with \"-T json\" and \"-T jsonraw\"");
1487 exit_status = INVALID_OPTION;
1491 /* If we specified output fields, but not the output field type... */
1492 if ((WRITE_FIELDS != output_action && WRITE_XML != output_action && WRITE_JSON != output_action && WRITE_EK != output_action) && 0 != output_fields_num_fields(output_fields)) {
1493 cmdarg_err("Output fields were specified with \"-e\", "
1494 "but \"-Tek, -Tfields, -Tjson or -Tpdml\" was not specified.");
1495 exit_status = INVALID_OPTION;
1497 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1498 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1499 "specified with \"-e\".");
1501 exit_status = INVALID_OPTION;
1505 if (dissect_color) {
1506 if (!color_filters_init(&err_msg, NULL)) {
1507 fprintf(stderr, "%s\n", err_msg);
1512 /* If no capture filter or display filter has been specified, and there are
1513 still command-line arguments, treat them as the tokens of a capture
1514 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1515 flag was specified. */
1516 if (optind < argc) {
1517 if (cf_name != NULL) {
1518 if (dfilter != NULL) {
1519 cmdarg_err("Display filters were specified both with \"-d\" "
1520 "and with additional command-line arguments.");
1521 exit_status = INVALID_OPTION;
1524 dfilter = get_args_as_string(argc, argv, optind);
1529 if (global_capture_opts.default_options.cfilter) {
1530 cmdarg_err("A default capture filter was specified both with \"-f\""
1531 " and with additional command-line arguments.");
1532 exit_status = INVALID_OPTION;
1535 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1536 interface_options *interface_opts;
1537 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
1538 if (interface_opts->cfilter == NULL) {
1539 interface_opts->cfilter = get_args_as_string(argc, argv, optind);
1541 cmdarg_err("A capture filter was specified both with \"-f\""
1542 " and with additional command-line arguments.");
1543 exit_status = INVALID_OPTION;
1547 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1549 capture_option_specified = TRUE;
1555 if (!global_capture_opts.saving_to_file) {
1556 /* We're not saving the capture to a file; if "-q" wasn't specified,
1557 we should print packet information */
1559 print_packet_info = TRUE;
1561 /* We're saving to a file; if we're writing to the standard output.
1562 and we'll also be writing dissected packets to the standard
1563 output, reject the request. At best, we could redirect that
1564 to the standard error; we *can't* write both to the standard
1565 output and have either of them be useful. */
1566 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1567 cmdarg_err("You can't write both raw packet data and dissected packets"
1568 " to the standard output.");
1569 exit_status = INVALID_OPTION;
1574 /* We're not saving the capture to a file; if "-q" wasn't specified,
1575 we should print packet information */
1577 print_packet_info = TRUE;
1580 #ifndef HAVE_LIBPCAP
1581 if (capture_option_specified)
1582 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1585 print_usage(stderr);
1586 exit_status = INVALID_OPTION;
1591 if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
1592 cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
1593 exit_status = INVALID_OPTION;
1598 if (output_only != NULL) {
1601 if (!print_details) {
1602 cmdarg_err("-O requires -V");
1603 exit_status = INVALID_OPTION;
1607 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1608 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1609 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1613 if (rfilter != NULL && !perform_two_pass_analysis) {
1614 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1615 exit_status = INVALID_OPTION;
1621 /* We're supposed to list the link-layer/timestamp types for an interface;
1622 did the user also specify a capture file to be read? */
1624 /* Yes - that's bogus. */
1625 cmdarg_err("You can't specify %s and a capture file to be read.",
1626 caps_queries & CAPS_QUERY_LINK_TYPES ? "-L" : "--list-time-stamp-types");
1627 exit_status = INVALID_OPTION;
1630 /* No - did they specify a ring buffer option? */
1631 if (global_capture_opts.multi_files_on) {
1632 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1633 exit_status = INVALID_OPTION;
1639 * "-r" was specified, so we're reading a capture file.
1640 * Capture options don't apply here.
1643 /* We don't support capture filters when reading from a capture file
1644 (the BPF compiler doesn't support all link-layer types that we
1645 support in capture files we read). */
1646 if (global_capture_opts.default_options.cfilter) {
1647 cmdarg_err("Only read filters, not capture filters, "
1648 "can be specified when reading a capture file.");
1649 exit_status = INVALID_OPTION;
1652 if (global_capture_opts.multi_files_on) {
1653 cmdarg_err("Multiple capture files requested, but "
1654 "a capture isn't being done.");
1655 exit_status = INVALID_OPTION;
1658 if (global_capture_opts.has_file_duration) {
1659 cmdarg_err("Switching capture files after a time period was specified, but "
1660 "a capture isn't being done.");
1661 exit_status = INVALID_OPTION;
1664 if (global_capture_opts.has_file_interval) {
1665 cmdarg_err("Switching capture files after a time interval was specified, but "
1666 "a capture isn't being done.");
1667 exit_status = INVALID_OPTION;
1670 if (global_capture_opts.has_ring_num_files) {
1671 cmdarg_err("A ring buffer of capture files was specified, but "
1672 "a capture isn't being done.");
1673 exit_status = INVALID_OPTION;
1676 if (global_capture_opts.has_autostop_files) {
1677 cmdarg_err("A maximum number of capture files was specified, but "
1678 "a capture isn't being done.");
1679 exit_status = INVALID_OPTION;
1682 if (global_capture_opts.capture_comment) {
1683 cmdarg_err("A capture comment was specified, but "
1684 "a capture isn't being done.\nThere's no support for adding "
1685 "a capture comment to an existing capture file.");
1686 exit_status = INVALID_OPTION;
1690 /* Note: TShark now allows the restriction of a _read_ file by packet count
1691 * and byte count as well as a write file. Other autostop options remain valid
1692 * only for a write file.
1694 if (global_capture_opts.has_autostop_duration) {
1695 cmdarg_err("A maximum capture time was specified, but "
1696 "a capture isn't being done.");
1697 exit_status = INVALID_OPTION;
1702 * "-r" wasn't specified, so we're doing a live capture.
1704 if (perform_two_pass_analysis) {
1705 /* Two-pass analysis doesn't work with live capture since it requires us
1706 * to buffer packets until we've read all of them, but a live capture
1707 * has no useful/meaningful definition of "all" */
1708 cmdarg_err("Live captures do not support two-pass analysis.");
1709 exit_status = INVALID_OPTION;
1713 if (global_capture_opts.saving_to_file) {
1714 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1716 /* When capturing, we only support writing pcap or pcapng format. */
1717 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1718 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1719 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1720 exit_status = INVALID_OPTION;
1723 if (global_capture_opts.capture_comment &&
1724 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1725 cmdarg_err("A capture comment can only be written to a pcapng file.");
1726 exit_status = INVALID_OPTION;
1729 if (global_capture_opts.multi_files_on) {
1730 /* Multiple-file mode doesn't work under certain conditions:
1731 a) it doesn't work if you're writing to the standard output;
1732 b) it doesn't work if you're writing to a pipe;
1734 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1735 cmdarg_err("Multiple capture files requested, but "
1736 "the capture is being written to the standard output.");
1737 exit_status = INVALID_OPTION;
1740 if (global_capture_opts.output_to_pipe) {
1741 cmdarg_err("Multiple capture files requested, but "
1742 "the capture file is a pipe.");
1743 exit_status = INVALID_OPTION;
1746 if (!global_capture_opts.has_autostop_filesize &&
1747 !global_capture_opts.has_file_duration &&
1748 !global_capture_opts.has_file_interval) {
1749 cmdarg_err("Multiple capture files requested, but "
1750 "no maximum capture file size, duration or interval was specified.");
1751 exit_status = INVALID_OPTION;
1755 /* Currently, we don't support read or display filters when capturing
1756 and saving the packets. */
1757 if (rfilter != NULL) {
1758 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1759 exit_status = INVALID_OPTION;
1762 if (dfilter != NULL) {
1763 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1764 exit_status = INVALID_OPTION;
1767 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1769 /* They didn't specify a "-w" flag, so we won't be saving to a
1770 capture file. Check for options that only make sense if
1771 we're saving to a file. */
1772 if (global_capture_opts.has_autostop_filesize) {
1773 cmdarg_err("Maximum capture file size specified, but "
1774 "capture isn't being saved to a file.");
1775 exit_status = INVALID_OPTION;
1778 if (global_capture_opts.multi_files_on) {
1779 cmdarg_err("Multiple capture files requested, but "
1780 "the capture isn't being saved to a file.");
1781 exit_status = INVALID_OPTION;
1784 if (global_capture_opts.capture_comment) {
1785 cmdarg_err("A capture comment was specified, but "
1786 "the capture isn't being saved to a file.");
1787 exit_status = INVALID_OPTION;
1796 /* Start windows sockets */
1797 result = WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1800 exit_status = INIT_FAILED;
1805 /* Notify all registered modules that have had any of their preferences
1806 changed either from one of the preferences file or from the command
1807 line that their preferences have changed. */
1810 /* We can also enable specified taps for export object */
1811 start_exportobjects();
1813 /* At this point MATE will have registered its field array so we can
1814 check if the fields specified by the user are all good.
1818 GSList *invalid_fields = output_fields_valid(output_fields);
1819 if (invalid_fields != NULL) {
1821 cmdarg_err("Some fields aren't valid:");
1822 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
1823 cmdarg_err_cont("\t%s", (gchar *)it->data);
1825 g_slist_free(invalid_fields);
1826 exit_status = INVALID_OPTION;
1831 /* We currently don't support taps, or printing dissected packets,
1832 if we're writing to a pipe. */
1833 if (global_capture_opts.saving_to_file &&
1834 global_capture_opts.output_to_pipe) {
1835 if (tap_listeners_require_dissection()) {
1836 cmdarg_err("Taps aren't supported when saving to a pipe.");
1837 exit_status = INVALID_OPTION;
1840 if (print_packet_info) {
1841 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1842 exit_status = INVALID_OPTION;
1848 if (ex_opt_count("read_format") > 0) {
1849 const gchar* name = ex_opt_get_next("read_format");
1850 in_file_type = open_info_name_to_type(name);
1851 if (in_file_type == WTAP_TYPE_AUTO) {
1852 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1853 list_read_capture_types();
1854 exit_status = INVALID_OPTION;
1859 timestamp_set_type(global_dissect_options.time_format);
1862 * Enabled and disabled protocols and heuristic dissectors as per
1863 * command-line options.
1865 if (!setup_enabled_and_disabled_protocols()) {
1866 exit_status = INVALID_OPTION;
1870 /* Build the column format array */
1871 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1874 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1875 capture_opts_trim_ring_num_files(&global_capture_opts);
1878 if (rfilter != NULL) {
1879 tshark_debug("Compiling read filter: '%s'", rfilter);
1880 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
1881 cmdarg_err("%s", err_msg);
1885 #ifdef HAVE_PCAP_OPEN_DEAD
1889 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1891 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1893 " Note: That read filter code looks like a valid capture filter;\n"
1894 " maybe you mixed them up?");
1900 exit_status = INVALID_INTERFACE;
1904 cfile.rfcode = rfcode;
1906 if (dfilter != NULL) {
1907 tshark_debug("Compiling display filter: '%s'", dfilter);
1908 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1909 cmdarg_err("%s", err_msg);
1913 #ifdef HAVE_PCAP_OPEN_DEAD
1917 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1919 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1921 " Note: That display filter code looks like a valid capture filter;\n"
1922 " maybe you mixed them up?");
1928 exit_status = INVALID_FILTER;
1932 cfile.dfcode = dfcode;
1934 if (print_packet_info) {
1935 /* If we're printing as text or PostScript, we have
1936 to create a print stream. */
1937 if (output_action == WRITE_TEXT) {
1938 switch (print_format) {
1941 print_stream = print_stream_text_stdio_new(stdout);
1945 print_stream = print_stream_ps_stdio_new(stdout);
1949 g_assert_not_reached();
1954 /* PDU export requested. Take the ownership of the '-w' file, apply tap
1955 * filters and start tapping. */
1956 if (pdu_export_arg) {
1957 const char *exp_pdu_tap_name = pdu_export_arg;
1958 const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
1959 char *exp_pdu_error;
1964 cmdarg_err("PDUs export requires a capture file (specify with -r).");
1965 exit_status = INVALID_OPTION;
1968 /* Take ownership of the '-w' output file. */
1970 exp_pdu_filename = global_capture_opts.save_file;
1971 global_capture_opts.save_file = NULL;
1973 exp_pdu_filename = output_file_name;
1974 output_file_name = NULL;
1976 if (exp_pdu_filename == NULL) {
1977 cmdarg_err("PDUs export requires an output file (-w).");
1978 exit_status = INVALID_OPTION;
1982 exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
1984 if (exp_pdu_error) {
1985 cmdarg_err("Cannot register tap: %s", exp_pdu_error);
1986 g_free(exp_pdu_error);
1987 exit_status = INVALID_TAP;
1991 if (strcmp(exp_pdu_filename, "-") == 0) {
1992 /* Write to the standard output. */
1995 exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
1997 cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
1998 exit_status = INVALID_FILE;
2003 /* Activate the export PDU tap */
2004 comment = g_strdup_printf("Dump of PDUs from %s", cf_name);
2005 err = exp_pdu_open(&exp_pdu_tap_data, exp_fd, comment);
2007 cfile_dump_open_failure_message("TShark", exp_pdu_filename, err,
2008 WTAP_FILE_TYPE_SUBTYPE_PCAPNG);
2010 exit_status = INVALID_EXPORT;
2015 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2018 tshark_debug("tshark: Opening capture file: %s", cf_name);
2020 * We're reading a capture file.
2022 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2025 exit_status = INVALID_FILE;
2029 /* Start statistics taps; we do so after successfully opening the
2030 capture file, so we know we have something to compute stats
2031 on, and after registering all dissectors, so that MATE will
2032 have registered its field array so we can have a tap filter
2033 with one of MATE's late-registered fields as part of the
2035 start_requested_stats();
2037 /* Do we need to do dissection of packets? That depends on, among
2038 other things, what taps are listening, so determine that after
2039 starting the statistics taps. */
2040 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2042 /* Process the packets in the file */
2043 tshark_debug("tshark: invoking process_cap_file() to process the packets");
2046 success = process_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2047 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2048 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2050 success = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2053 CATCH(OutOfMemoryError) {
2057 "Sorry, but TShark has to terminate now.\n"
2059 "More information and workarounds can be found at\n"
2060 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2066 /* We still dump out the results of taps, etc., as we might have
2067 read some packets; however, we exit with an error status. */
2071 if (pdu_export_arg) {
2072 err = exp_pdu_close(&exp_pdu_tap_data);
2074 cfile_close_failure_message(exp_pdu_filename, err);
2077 g_free(pdu_export_arg);
2078 g_free(exp_pdu_filename);
2081 tshark_debug("tshark: no capture file specified");
2082 /* No capture file specified, so we're supposed to do a live capture
2083 or get a list of link-layer types for a live capture device;
2084 do we have support for live captures? */
2087 /* Warn the user if npf.sys isn't loaded. */
2088 if (!npf_sys_is_running()) {
2089 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
2090 "capturing or\nlisting interfaces.\n");
2094 /* if no interface was specified, pick a default */
2095 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2096 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2097 if (exit_status != 0) {
2101 /* if requested, list the link layer types and exit */
2105 /* Get the list of link-layer types for the capture devices. */
2106 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2107 interface_options *interface_opts;
2108 if_capabilities_t *caps;
2109 char *auth_str = NULL;
2110 int if_caps_queries = caps_queries;
2112 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2113 #ifdef HAVE_PCAP_REMOTE
2114 if (interface_opts->auth_type == CAPTURE_AUTH_PWD) {
2115 auth_str = g_strdup_printf("%s:%s", interface_opts->auth_username, interface_opts->auth_password);
2118 caps = capture_get_if_capabilities(interface_opts->name, interface_opts->monitor_mode, auth_str, &err_str, NULL);
2121 cmdarg_err("%s", err_str);
2123 exit_status = INVALID_CAPABILITY;
2126 if ((if_caps_queries & CAPS_QUERY_LINK_TYPES) && caps->data_link_types == NULL) {
2127 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts->name);
2128 exit_status = INVALID_DATA_LINK;
2131 if ((if_caps_queries & CAPS_QUERY_TIMESTAMP_TYPES) && caps->timestamp_types == NULL) {
2132 cmdarg_err("The capture device \"%s\" has no timestamp types.", interface_opts->name);
2133 exit_status = INVALID_TIMESTAMP_TYPE;
2136 if (interface_opts->monitor_mode)
2137 if_caps_queries |= CAPS_MONITOR_MODE;
2138 capture_opts_print_if_capabilities(caps, interface_opts->name, if_caps_queries);
2139 free_if_capabilities(caps);
2141 exit_status = EXIT_SUCCESS;
2146 * If the standard error isn't a terminal, don't print packet counts,
2147 * as they won't show up on the user's terminal and they'll get in
2148 * the way of error messages in the file (to which we assume the
2149 * standard error was redirected; if it's redirected to the null
2150 * device, there's no point in printing packet counts anyway).
2152 * Otherwise, if we're printing packet information and the standard
2153 * output is a terminal (which we assume means the standard output and
2154 * error are going to the same terminal), don't print packet counts,
2155 * as they'll get in the way of the packet information.
2157 * Otherwise, if the user specified -q, don't print packet counts.
2159 * Otherwise, print packet counts.
2161 * XXX - what if the user wants to do a live capture, doesn't want
2162 * to save it to a file, doesn't want information printed for each
2163 * packet, does want some "-z" statistic, and wants packet counts
2164 * so they know whether they're seeing any packets? -q will
2165 * suppress the information printed for each packet, but it'll
2166 * also suppress the packet counts.
2168 if (!ws_isatty(ws_fileno(stderr)))
2169 print_packet_counts = FALSE;
2170 else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
2171 print_packet_counts = FALSE;
2173 print_packet_counts = FALSE;
2175 print_packet_counts = TRUE;
2177 if (print_packet_info) {
2178 if (!write_preamble(&cfile)) {
2179 show_print_file_io_error(errno);
2180 exit_status = INVALID_FILE;
2185 tshark_debug("tshark: performing live capture");
2187 /* Start statistics taps; we should only do so after the capture
2188 started successfully, so we know we have something to compute
2189 stats, but we currently don't check for that - see below.
2191 We do so after registering all dissectors, so that MATE will
2192 have registered its field array so we can have a tap filter
2193 with one of MATE's late-registered fields as part of the
2195 start_requested_stats();
2197 /* Do we need to do dissection of packets? That depends on, among
2198 other things, what taps are listening, so determine that after
2199 starting the statistics taps. */
2200 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2203 * XXX - this returns FALSE if an error occurred, but it also
2204 * returns FALSE if the capture stops because a time limit
2205 * was reached (and possibly other limits), so we can't assume
2206 * it means an error.
2208 * The capture code is a bit twisty, so it doesn't appear to
2209 * be an easy fix. We just ignore the return value for now.
2210 * Instead, pass on the exit status from the capture child.
2213 exit_status = global_capture_session.fork_child_status;
2215 if (print_packet_info) {
2216 if (!write_finale()) {
2217 show_print_file_io_error(errno);
2221 /* No - complain. */
2222 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2223 exit_status = INVALID_CAPTURE;
2228 if (cfile.provider.frames != NULL) {
2229 free_frame_data_sequence(cfile.provider.frames);
2230 cfile.provider.frames = NULL;
2233 draw_tap_listeners(TRUE);
2234 /* Memory cleanup */
2235 reset_tap_listeners();
2236 funnel_dump_all_text_windows();
2237 epan_free(cfile.epan);
2241 output_fields_free(output_fields);
2242 output_fields = NULL;
2246 destroy_print_stream(print_stream);
2248 capture_opts_cleanup(&global_capture_opts);
2250 g_free(output_file_name);
2252 col_cleanup(&cfile.cinfo);
2253 free_filter_lists();
2257 dfilter_free(dfcode);
2263 wmain(int argc, wchar_t *wc_argv[])
2267 argv = arg_list_utf_16to8(argc, wc_argv);
2268 return real_main(argc, argv);
2272 main(int argc, char *argv[])
2274 return real_main(argc, argv);
2278 /*#define USE_BROKEN_G_MAIN_LOOP*/
2280 #ifdef USE_BROKEN_G_MAIN_LOOP
2283 gboolean loop_running = FALSE;
2285 guint32 packet_count = 0;
2288 typedef struct pipe_input_tag {
2291 ws_process_id *child_process;
2292 pipe_input_cb_t input_cb;
2293 guint pipe_input_id;
2295 GMutex *callback_running;
2299 static pipe_input_t pipe_input;
2302 /* The timer has expired, see if there's stuff to read from the pipe,
2303 if so, do the callback */
2305 pipe_timer_cb(gpointer data)
2311 pipe_input_t *pipe_input_p = data;
2312 gint iterations = 0;
2314 g_mutex_lock (pipe_input_p->callback_running);
2316 /* try to read data from the pipe only 5 times, to avoid blocking */
2317 while(iterations < 5) {
2318 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2320 /* Oddly enough although Named pipes don't work on win9x,
2321 PeekNamedPipe does !!! */
2322 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2323 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2325 /* Get the child process exit status */
2326 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2329 /* If the Peek returned an error, or there are bytes to be read
2330 or the childwatcher thread has terminated then call the normal
2332 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2334 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2336 /* And call the real handler */
2337 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2338 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2339 /* pipe closed, return false so that the timer is stopped */
2340 g_mutex_unlock (pipe_input_p->callback_running);
2345 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2346 /* No data, stop now */
2353 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2355 g_mutex_unlock (pipe_input_p->callback_running);
2357 /* we didn't stopped the timer, so let it run */
2364 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2367 pipe_input.source = source;
2368 pipe_input.child_process = child_process;
2369 pipe_input.user_data = user_data;
2370 pipe_input.input_cb = input_cb;
2373 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2374 g_mutex_init(pipe_input.callback_running);
2375 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2376 do this but that doesn't cover all win32 platforms. GTK can do
2377 this but doesn't seem to work over processes. Attempt to do
2378 something similar here, start a timer and check for data on every
2380 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2381 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2385 static const nstime_t *
2386 tshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
2388 if (prov->ref && prov->ref->num == frame_num)
2389 return &prov->ref->abs_ts;
2391 if (prov->prev_dis && prov->prev_dis->num == frame_num)
2392 return &prov->prev_dis->abs_ts;
2394 if (prov->prev_cap && prov->prev_cap->num == frame_num)
2395 return &prov->prev_cap->abs_ts;
2398 frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
2400 return (fd) ? &fd->abs_ts : NULL;
2407 tshark_epan_new(capture_file *cf)
2409 static const struct packet_provider_funcs funcs = {
2410 tshark_get_frame_ts,
2411 cap_file_provider_get_interface_name,
2412 cap_file_provider_get_interface_description,
2416 return epan_new(&cf->provider, &funcs);
2423 volatile gboolean ret = TRUE;
2426 #ifdef USE_TSHARK_SELECT
2430 struct sigaction action, oldaction;
2433 /* Create new dissection section. */
2434 epan_free(cfile.epan);
2435 cfile.epan = tshark_epan_new(&cfile);
2438 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2439 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2441 /* Catch SIGINT and SIGTERM and, if we get either of them,
2442 clean up and exit. If SIGHUP isn't being ignored, catch
2443 it too and, if we get it, clean up and exit.
2445 We restart any read that was in progress, so that it doesn't
2446 disrupt reading from the sync pipe. The signal handler tells
2447 the capture child to finish; it will report that it finished,
2448 or will exit abnormally, so we'll stop reading from the sync
2449 pipe, pick up the exit status, and quit. */
2450 memset(&action, 0, sizeof(action));
2451 action.sa_handler = capture_cleanup;
2452 action.sa_flags = SA_RESTART;
2453 sigemptyset(&action.sa_mask);
2454 sigaction(SIGTERM, &action, NULL);
2455 sigaction(SIGINT, &action, NULL);
2456 sigaction(SIGHUP, NULL, &oldaction);
2457 if (oldaction.sa_handler == SIG_DFL)
2458 sigaction(SIGHUP, &action, NULL);
2461 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2462 quiet mode, report the number of packets we've captured.
2464 Again, restart any read that was in progress, so that it doesn't
2465 disrupt reading from the sync pipe. */
2466 action.sa_handler = report_counts_siginfo;
2467 action.sa_flags = SA_RESTART;
2468 sigemptyset(&action.sa_mask);
2469 sigaction(SIGINFO, &action, NULL);
2470 #endif /* SIGINFO */
2473 global_capture_session.state = CAPTURE_PREPARING;
2475 /* Let the user know which interfaces were chosen. */
2476 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2477 interface_options *interface_opts;
2479 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2480 interface_opts->descr = get_interface_descriptive_name(interface_opts->name);
2482 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2483 if (really_quiet == FALSE)
2484 fprintf(stderr, "Capturing on %s\n", str->str);
2486 g_string_free(str, TRUE);
2488 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2494 * Force synchronous resolution of IP addresses; we're doing only
2495 * one pass, so we can't do it in the background and fix up past
2498 set_resolution_synchrony(TRUE);
2500 /* the actual capture loop
2502 * XXX - glib doesn't seem to provide any event based loop handling.
2504 * XXX - for whatever reason,
2505 * calling g_main_loop_new() ends up in 100% cpu load.
2507 * But that doesn't matter: in UNIX we can use select() to find an input
2508 * source with something to do.
2510 * But that doesn't matter because we're in a CLI (that doesn't need to
2511 * update a GUI or something at the same time) so it's OK if we block
2512 * trying to read from the pipe.
2514 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2515 * wrong (but I leave it there in case I am...).
2518 #ifdef USE_TSHARK_SELECT
2520 FD_SET(pipe_input.source, &readfds);
2523 loop_running = TRUE;
2527 while (loop_running)
2529 #ifdef USE_TSHARK_SELECT
2530 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2534 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2536 loop_running = FALSE;
2537 } else if (ret == 1) {
2539 /* Call the real handler */
2540 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2541 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2543 loop_running = FALSE;
2545 #ifdef USE_TSHARK_SELECT
2550 CATCH(OutOfMemoryError) {
2554 "Sorry, but TShark has to terminate now.\n"
2556 "More information and workarounds can be found at\n"
2557 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2564 /* capture child detected an error */
2566 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2568 cmdarg_err("%s", error_msg);
2569 cmdarg_err_cont("%s", secondary_error_msg);
2573 /* capture child detected an capture filter related error */
2575 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2577 capture_options *capture_opts = cap_session->capture_opts;
2578 dfilter_t *rfcode = NULL;
2579 interface_options *interface_opts;
2581 g_assert(i < capture_opts->ifaces->len);
2582 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
2584 if (dfilter_compile(interface_opts->cfilter, &rfcode, NULL) && rfcode != NULL) {
2586 "Invalid capture filter \"%s\" for interface '%s'.\n"
2588 "That string looks like a valid display filter; however, it isn't a valid\n"
2589 "capture filter (%s).\n"
2591 "Note that display filters and capture filters don't have the same syntax,\n"
2592 "so you can't use most display filter expressions as capture filters.\n"
2594 "See the User's Guide for a description of the capture filter syntax.",
2595 interface_opts->cfilter, interface_opts->descr, error_message);
2596 dfilter_free(rfcode);
2599 "Invalid capture filter \"%s\" for interface '%s'.\n"
2601 "That string isn't a valid capture filter (%s).\n"
2602 "See the User's Guide for a description of the capture filter syntax.",
2603 interface_opts->cfilter, interface_opts->descr, error_message);
2608 /* capture child tells us we have a new (or the first) capture file */
2610 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2612 capture_options *capture_opts = cap_session->capture_opts;
2613 capture_file *cf = (capture_file *) cap_session->cf;
2614 gboolean is_tempfile;
2617 if (cap_session->state == CAPTURE_PREPARING) {
2618 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2620 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2622 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2624 /* free the old filename */
2625 if (capture_opts->save_file != NULL) {
2627 /* we start a new capture file, close the old one (if we had one before) */
2628 if (cf->state != FILE_CLOSED) {
2629 if (cf->provider.wth != NULL) {
2630 wtap_close(cf->provider.wth);
2631 cf->provider.wth = NULL;
2633 cf->state = FILE_CLOSED;
2636 g_free(capture_opts->save_file);
2637 is_tempfile = FALSE;
2639 epan_free(cf->epan);
2640 cf->epan = tshark_epan_new(cf);
2642 /* we didn't had a save_file before, must be a tempfile */
2646 /* save the new filename */
2647 capture_opts->save_file = g_strdup(new_file);
2649 /* if we are in real-time mode, open the new file now */
2650 if (do_dissection) {
2651 /* this is probably unecessary, but better safe than sorry */
2652 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2653 /* Attempt to open the capture file and set up to read from it. */
2654 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2658 /* Don't unlink (delete) the save file - leave it around,
2659 for debugging purposes. */
2660 g_free(capture_opts->save_file);
2661 capture_opts->save_file = NULL;
2666 cap_session->state = CAPTURE_RUNNING;
2672 /* capture child tells us we have new packets to read */
2674 capture_input_new_packets(capture_session *cap_session, int to_read)
2680 capture_file *cf = (capture_file *)cap_session->cf;
2681 gboolean filtering_tap_listeners;
2686 * Prevent a SIGINFO handler from writing to the standard error while
2687 * we're doing so or writing to the standard output; instead, have it
2688 * just set a flag telling us to print that information when we're done.
2691 #endif /* SIGINFO */
2693 /* Do we have any tap listeners with filters? */
2694 filtering_tap_listeners = have_filtering_tap_listeners();
2696 /* Get the union of the flags for all tap listeners. */
2697 tap_flags = union_of_tap_listener_flags();
2699 if (do_dissection) {
2700 gboolean create_proto_tree;
2701 epan_dissect_t *edt;
2704 * Determine whether we need to create a protocol tree.
2707 * we're going to apply a read filter;
2709 * we're going to apply a display filter;
2711 * we're going to print the protocol tree;
2713 * one of the tap listeners is going to apply a filter;
2715 * one of the tap listeners requires a protocol tree;
2717 * a postdissector wants field values or protocols
2718 * on the first pass;
2720 * we have custom columns (which require field values, which
2721 * currently requires that we build a protocol tree).
2724 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2725 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
2726 have_custom_cols(&cf->cinfo) || dissect_color);
2728 /* The protocol tree will be "visible", i.e., printed, only if we're
2729 printing packet details, which is true if we're printing stuff
2730 ("print_packet_info" is true) and we're in verbose mode
2731 ("packet_details" is true). */
2732 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2734 while (to_read-- && cf->provider.wth) {
2735 wtap_cleareof(cf->provider.wth);
2736 ret = wtap_read(cf->provider.wth, &err, &err_info, &data_offset);
2737 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
2739 /* read from file failed, tell the capture child to stop */
2740 sync_pipe_stop(cap_session);
2741 wtap_close(cf->provider.wth);
2742 cf->provider.wth = NULL;
2744 ret = process_packet_single_pass(cf, edt, data_offset,
2745 wtap_get_rec(cf->provider.wth),
2746 wtap_get_buf_ptr(cf->provider.wth), tap_flags);
2749 /* packet successfully read and gone through the "Read Filter" */
2754 epan_dissect_free(edt);
2758 * Dumpcap's doing all the work; we're not doing any dissection.
2759 * Count all the packets it wrote.
2761 packet_count += to_read;
2764 if (print_packet_counts) {
2765 /* We're printing packet counts. */
2766 if (packet_count != 0) {
2767 fprintf(stderr, "\r%u ", packet_count);
2768 /* stderr could be line buffered */
2775 * Allow SIGINFO handlers to write.
2780 * If a SIGINFO handler asked us to write out capture counts, do so.
2784 #endif /* SIGINFO */
2790 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2791 /* Report the count only if we aren't printing a packet count
2792 as packets arrive. */
2793 fprintf(stderr, "%u packet%s captured\n", packet_count,
2794 plurality(packet_count, "", "s"));
2797 infoprint = FALSE; /* we just reported it */
2798 #endif /* SIGINFO */
2803 report_counts_siginfo(int signum _U_)
2805 int sav_errno = errno;
2806 /* If we've been told to delay printing, just set a flag asking
2807 that we print counts (if we're supposed to), otherwise print
2808 the count of packets captured (if we're supposed to). */
2815 #endif /* SIGINFO */
2818 /* capture child detected any packet drops? */
2820 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2822 if (print_packet_counts) {
2823 /* We're printing packet counts to stderr.
2824 Send a newline so that we move to the line after the packet count. */
2825 fprintf(stderr, "\n");
2829 /* We're printing packet counts to stderr.
2830 Send a newline so that we move to the line after the packet count. */
2831 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2837 * Capture child closed its side of the pipe, report any error and
2838 * do the required cleanup.
2841 capture_input_closed(capture_session *cap_session, gchar *msg)
2843 capture_file *cf = (capture_file *) cap_session->cf;
2846 fprintf(stderr, "tshark: %s\n", msg);
2850 if (cf != NULL && cf->provider.wth != NULL) {
2851 wtap_close(cf->provider.wth);
2852 if (cf->is_tempfile) {
2853 ws_unlink(cf->filename);
2856 #ifdef USE_BROKEN_G_MAIN_LOOP
2857 /*g_main_loop_quit(loop);*/
2858 g_main_loop_quit(loop);
2860 loop_running = FALSE;
2869 capture_cleanup(DWORD ctrltype _U_)
2871 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2872 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2873 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2874 like SIGTERM at least when the machine's shutting down.
2876 For now, we handle them all as indications that we should clean up
2877 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2880 We must return TRUE so that no other handler - such as one that would
2881 terminate the process - gets called.
2883 XXX - for some reason, typing ^C to TShark, if you run this in
2884 a Cygwin console window in at least some versions of Cygwin,
2885 causes TShark to terminate immediately; this routine gets
2886 called, but the main loop doesn't get a chance to run and
2887 exit cleanly, at least if this is compiled with Microsoft Visual
2888 C++ (i.e., it's a property of the Cygwin console window or Bash;
2889 it happens if TShark is not built with Cygwin - for all I know,
2890 building it with Cygwin may make the problem go away). */
2892 /* tell the capture child to stop */
2893 sync_pipe_stop(&global_capture_session);
2895 /* don't stop our own loop already here, otherwise status messages and
2896 * cleanup wouldn't be done properly. The child will indicate the stop of
2897 * everything by calling capture_input_closed() later */
2903 capture_cleanup(int signum _U_)
2905 /* tell the capture child to stop */
2906 sync_pipe_stop(&global_capture_session);
2908 /* don't stop our own loop already here, otherwise status messages and
2909 * cleanup wouldn't be done properly. The child will indicate the stop of
2910 * everything by calling capture_input_closed() later */
2913 #endif /* HAVE_LIBPCAP */
2916 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2917 gint64 offset, wtap_rec *rec,
2924 /* The frame number of this packet is one more than the count of
2925 frames in this packet. */
2926 framenum = cf->count + 1;
2928 /* If we're not running a display filter and we're not printing any
2929 packet information, we don't need to do a dissection. This means
2930 that all packets can be marked as 'passed'. */
2933 frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
2935 /* If we're going to run a read filter or a display filter, set up to
2936 do a dissection and do so. (This is the first pass of two passes
2937 over the packets, so we will not be printing any information
2938 from the dissection or running taps on the packet; if we're doing
2939 any of that, we'll do it in the second pass.) */
2941 /* If we're running a read filter, prime the epan_dissect_t with that
2944 epan_dissect_prime_with_dfilter(edt, cf->rfcode);
2947 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2949 /* This is the first pass, so prime the epan_dissect_t with the
2950 hfids postdissectors want on the first pass. */
2951 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
2953 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2954 &cf->provider.ref, cf->provider.prev_dis);
2955 if (cf->provider.ref == &fdlocal) {
2956 ref_frame = fdlocal;
2957 cf->provider.ref = &ref_frame;
2960 epan_dissect_run(edt, cf->cd_t, rec,
2961 frame_tvbuff_new(&cf->provider, &fdlocal, pd),
2964 /* Run the read filter if we have one. */
2966 passed = dfilter_apply_edt(cf->rfcode, edt);
2970 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2971 cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
2973 /* If we're not doing dissection then there won't be any dependent frames.
2974 * More importantly, edt.pi.dependent_frames won't be initialized because
2975 * epan hasn't been initialized.
2976 * if we *are* doing dissection, then mark the dependent frames, but only
2977 * if a display filter was given and it matches this packet.
2979 if (edt && cf->dfcode) {
2980 if (dfilter_apply_edt(cf->dfcode, edt)) {
2981 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
2987 /* if we don't add it to the frame_data_sequence, clean it up right now
2989 frame_data_destroy(&fdlocal);
2993 epan_dissect_reset(edt);
2999 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
3000 frame_data *fdata, wtap_rec *rec,
3001 Buffer *buf, guint tap_flags)
3006 /* If we're not running a display filter and we're not printing any
3007 packet information, we don't need to do a dissection. This means
3008 that all packets can be marked as 'passed'. */
3011 /* If we're going to print packet information, or we're going to
3012 run a read filter, or we're going to process taps, set up to
3013 do a dissection and do so. (This is the second pass of two
3014 passes over the packets; that's the pass where we print
3015 packet information or run taps.) */
3017 /* If we're running a display filter, prime the epan_dissect_t with that
3020 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3022 col_custom_prime_edt(edt, &cf->cinfo);
3024 /* We only need the columns if either
3025 1) some tap needs the columns
3027 2) we're printing packet info but we're *not* verbose; in verbose
3028 mode, we print the protocol tree, not the protocol summary.
3030 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3035 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3036 &cf->provider.ref, cf->provider.prev_dis);
3037 if (cf->provider.ref == fdata) {
3039 cf->provider.ref = &ref_frame;
3042 if (dissect_color) {
3043 color_filters_prime_edt(edt);
3044 fdata->flags.need_colorize = 1;
3047 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3048 frame_tvbuff_new_buffer(&cf->provider, fdata, buf),
3051 /* Run the read/display filter if we have one. */
3053 passed = dfilter_apply_edt(cf->dfcode, edt);
3057 frame_data_set_after_dissect(fdata, &cum_bytes);
3058 /* Process this packet. */
3059 if (print_packet_info) {
3060 /* We're printing packet information; print the information for
3062 print_packet(cf, edt);
3064 /* If we're doing "line-buffering", flush the standard output
3065 after every packet. See the comment above, for the "-l"
3066 option, for an explanation of why we do that. */
3070 if (ferror(stdout)) {
3071 show_print_file_io_error(errno);
3075 cf->provider.prev_dis = fdata;
3077 cf->provider.prev_cap = fdata;
3080 epan_dissect_reset(edt);
3082 return passed || fdata->flags.dependent_of_displayed;
3086 process_cap_file(capture_file *cf, char *save_file, int out_file_type,
3087 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3089 gboolean success = TRUE;
3091 int snapshot_length;
3094 int err = 0, err_pass1 = 0;
3095 gchar *err_info = NULL, *err_info_pass1 = NULL;
3097 gboolean filtering_tap_listeners;
3099 GArray *shb_hdrs = NULL;
3100 wtapng_iface_descriptions_t *idb_inf = NULL;
3101 GArray *nrb_hdrs = NULL;
3104 epan_dissect_t *edt = NULL;
3105 char *shb_user_appl;
3107 wtap_rec_init(&rec);
3109 idb_inf = wtap_file_get_idb_info(cf->provider.wth);
3110 #ifdef PCAP_NG_DEFAULT
3111 if (idb_inf->interface_data->len > 1) {
3112 linktype = WTAP_ENCAP_PER_PACKET;
3114 linktype = wtap_file_encap(cf->provider.wth);
3117 linktype = wtap_file_encap(cf->provider.wth);
3119 if (save_file != NULL) {
3120 /* Set up to write to the capture file. */
3121 snapshot_length = wtap_snapshot_length(cf->provider.wth);
3122 if (snapshot_length == 0) {
3123 /* Snapshot length of input file not known. */
3124 snapshot_length = WTAP_MAX_PACKET_SIZE_STANDARD;
3126 tshark_debug("tshark: snapshot_length = %d", snapshot_length);
3128 shb_hdrs = wtap_file_get_shb_for_new_file(cf->provider.wth);
3129 nrb_hdrs = wtap_file_get_nrb_for_new_file(cf->provider.wth);
3131 /* If we don't have an application name add Tshark */
3132 if (wtap_block_get_string_option_value(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
3133 /* this is free'd by wtap_block_free() later */
3134 wtap_block_add_string_option_format(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "TShark (Wireshark) %s", get_ws_vcs_version_info());
3137 if (linktype != WTAP_ENCAP_PER_PACKET &&
3138 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3139 tshark_debug("tshark: writing PCAP format to %s", save_file);
3140 if (strcmp(save_file, "-") == 0) {
3141 /* Write to the standard output. */
3142 pdh = wtap_dump_open_stdout(out_file_type, linktype,
3143 snapshot_length, FALSE /* compressed */, &err);
3145 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3146 snapshot_length, FALSE /* compressed */, &err);
3150 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3151 if (strcmp(save_file, "-") == 0) {
3152 /* Write to the standard output. */
3153 pdh = wtap_dump_open_stdout_ng(out_file_type, linktype,
3154 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3156 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3157 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3165 /* We couldn't set up to write to the capture file. */
3166 cfile_dump_open_failure_message("TShark", save_file, err, out_file_type);
3171 /* Set up to print packet information. */
3172 if (print_packet_info) {
3173 if (!write_preamble(cf)) {
3174 show_print_file_io_error(errno);
3184 /* Do we have any tap listeners with filters? */
3185 filtering_tap_listeners = have_filtering_tap_listeners();
3187 /* Get the union of the flags for all tap listeners. */
3188 tap_flags = union_of_tap_listener_flags();
3190 if (perform_two_pass_analysis) {
3193 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3195 /* Allocate a frame_data_sequence for all the frames. */
3196 cf->provider.frames = new_frame_data_sequence();
3198 if (do_dissection) {
3199 gboolean create_proto_tree;
3202 * Determine whether we need to create a protocol tree.
3205 * we're going to apply a read filter;
3207 * we're going to apply a display filter;
3209 * a postdissector wants field values or protocols
3210 * on the first pass.
3213 (cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
3215 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3217 /* We're not going to display the protocol tree on this pass,
3218 so it's not going to be "visible". */
3219 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3222 tshark_debug("tshark: reading records for first pass");
3223 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3224 if (process_packet_first_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3225 wtap_get_buf_ptr(cf->provider.wth))) {
3226 /* Stop reading if we have the maximum number of packets;
3227 * When the -c option has not been used, max_packet_count
3228 * starts at 0, which practically means, never stop reading.
3229 * (unless we roll over max_packet_count ?)
3231 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3232 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3233 max_packet_count, data_offset, max_byte_count);
3234 err = 0; /* This is not an error */
3241 * If we got a read error on the first pass, remember the error, so
3242 * but do the second pass, so we can at least process the packets we
3243 * read, and then report the first-pass error after the second pass
3244 * (and before we report any second-pass errors), so all the the
3245 * errors show up at the end.
3249 err_info_pass1 = err_info;
3255 epan_dissect_free(edt);
3259 /* Close the sequential I/O side, to free up memory it requires. */
3260 wtap_sequential_close(cf->provider.wth);
3262 /* Allow the protocol dissectors to free up memory that they
3263 * don't need after the sequential run-through of the packets. */
3264 postseq_cleanup_all_protocols();
3266 cf->provider.prev_dis = NULL;
3267 cf->provider.prev_cap = NULL;
3268 ws_buffer_init(&buf, 1500);
3270 tshark_debug("tshark: done with first pass");
3272 if (do_dissection) {
3273 gboolean create_proto_tree;
3276 * Determine whether we need to create a protocol tree.
3279 * we're going to apply a display filter;
3281 * we're going to print the protocol tree;
3283 * one of the tap listeners requires a protocol tree;
3285 * we have custom columns (which require field values, which
3286 * currently requires that we build a protocol tree).
3289 (cf->dfcode || print_details || filtering_tap_listeners ||
3290 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
3292 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3294 /* The protocol tree will be "visible", i.e., printed, only if we're
3295 printing packet details, which is true if we're printing stuff
3296 ("print_packet_info" is true) and we're in verbose mode
3297 ("packet_details" is true). */
3298 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3302 * Force synchronous resolution of IP addresses; in this pass, we
3303 * can't do it in the background and fix up past dissections.
3305 set_resolution_synchrony(TRUE);
3307 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3308 fdata = frame_data_sequence_find(cf->provider.frames, framenum);
3309 if (wtap_seek_read(cf->provider.wth, fdata->file_off, &rec, &buf, &err,
3311 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3312 if (process_packet_second_pass(cf, edt, fdata, &rec, &buf,
3314 /* Either there's no read filtering or this packet passed the
3315 filter, so, if we're writing to a capture file, write
3318 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3319 if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3320 /* Error writing to a capture file */
3321 tshark_debug("tshark: error writing to a capture file (%d)", err);
3323 /* Report the error.
3324 XXX - framenum is not necessarily the frame number in
3325 the input file if there was a read filter. */
3326 cfile_write_failure_message("TShark", cf->filename, save_file,
3327 err, err_info, framenum,
3329 wtap_dump_close(pdh, &err);
3330 wtap_block_array_free(shb_hdrs);
3331 wtap_block_array_free(nrb_hdrs);
3340 epan_dissect_free(edt);
3344 ws_buffer_free(&buf);
3346 tshark_debug("tshark: done with second pass");
3349 /* !perform_two_pass_analysis */
3351 gboolean create_proto_tree = FALSE;
3352 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3354 if (do_dissection) {
3356 * Determine whether we need to create a protocol tree.
3359 * we're going to apply a read filter;
3361 * we're going to apply a display filter;
3363 * we're going to print the protocol tree;
3365 * one of the tap listeners is going to apply a filter;
3367 * one of the tap listeners requires a protocol tree;
3369 * a postdissector wants field values or protocols
3370 * on the first pass;
3372 * we have custom columns (which require field values, which
3373 * currently requires that we build a protocol tree).
3376 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3377 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
3378 have_custom_cols(&cf->cinfo) || dissect_color);
3380 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3382 /* The protocol tree will be "visible", i.e., printed, only if we're
3383 printing packet details, which is true if we're printing stuff
3384 ("print_packet_info" is true) and we're in verbose mode
3385 ("packet_details" is true). */
3386 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3390 * Force synchronous resolution of IP addresses; we're doing only
3391 * one pass, so we can't do it in the background and fix up past
3394 set_resolution_synchrony(TRUE);
3396 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3399 tshark_debug("tshark: processing packet #%d", framenum);
3401 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
3403 if (process_packet_single_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3404 wtap_get_buf_ptr(cf->provider.wth), tap_flags)) {
3405 /* Either there's no read filtering or this packet passed the
3406 filter, so, if we're writing to a capture file, write
3409 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3410 if (!wtap_dump(pdh, wtap_get_rec(cf->provider.wth), wtap_get_buf_ptr(cf->provider.wth), &err, &err_info)) {
3411 /* Error writing to a capture file */
3412 tshark_debug("tshark: error writing to a capture file (%d)", err);
3413 cfile_write_failure_message("TShark", cf->filename, save_file,
3414 err, err_info, framenum, out_file_type);
3415 wtap_dump_close(pdh, &err);
3416 wtap_block_array_free(shb_hdrs);
3417 wtap_block_array_free(nrb_hdrs);
3422 /* Stop reading if we have the maximum number of packets;
3423 * When the -c option has not been used, max_packet_count
3424 * starts at 0, which practically means, never stop reading.
3425 * (unless we roll over max_packet_count ?)
3427 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3428 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3429 max_packet_count, data_offset, max_byte_count);
3430 err = 0; /* This is not an error */
3436 epan_dissect_free(edt);
3441 wtap_rec_cleanup(&rec);
3443 if (err != 0 || err_pass1 != 0) {
3444 tshark_debug("tshark: something failed along the line (%d)", err);
3446 * Print a message noting that the read failed somewhere along the line.
3448 * If we're printing packet data, and the standard output and error are
3449 * going to the same place, flush the standard output, so everything
3450 * buffered up is written, and then print a newline to the standard error
3451 * before printing the error message, to separate it from the packet
3452 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3453 * the _fstat() documentation at Microsoft doesn't indicate whether
3454 * st_ino is even supported.)
3457 if (print_packet_info) {
3458 ws_statb64 stat_stdout, stat_stderr;
3460 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3461 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3462 stat_stdout.st_ino == stat_stderr.st_ino) {
3464 fprintf(stderr, "\n");
3469 if (err_pass1 != 0) {
3470 /* Error on pass 1 of two-pass processing. */
3471 cfile_read_failure_message("TShark", cf->filename, err_pass1,
3475 /* Error on pass 2 of two-pass processing or on the only pass of
3476 one-pass processing. */
3477 cfile_read_failure_message("TShark", cf->filename, err, err_info);
3481 if (save_file != NULL) {
3482 if (pdh && out_file_name_res) {
3483 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3484 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3485 wtap_file_type_subtype_short_string(out_file_type));
3488 /* Now close the capture file. */
3489 if (!wtap_dump_close(pdh, &err)) {
3490 cfile_close_failure_message(save_file, err);
3494 if (print_packet_info) {
3495 if (!write_finale()) {
3496 show_print_file_io_error(errno);
3503 wtap_close(cf->provider.wth);
3504 cf->provider.wth = NULL;
3506 wtap_block_array_free(shb_hdrs);
3507 wtap_block_array_free(nrb_hdrs);
3513 process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
3514 wtap_rec *rec, const guchar *pd,
3521 /* Count this packet. */
3524 /* If we're not running a display filter and we're not printing any
3525 packet information, we don't need to do a dissection. This means
3526 that all packets can be marked as 'passed'. */
3529 frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
3531 /* If we're going to print packet information, or we're going to
3532 run a read filter, or we're going to process taps, set up to
3533 do a dissection and do so. (This is the one and only pass
3534 over the packets, so, if we'll be printing packet information
3535 or running taps, we'll be doing it here.) */
3537 /* If we're running a filter, prime the epan_dissect_t with that
3540 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3542 /* This is the first and only pass, so prime the epan_dissect_t
3543 with the hfids postdissectors want on the first pass. */
3544 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
3546 col_custom_prime_edt(edt, &cf->cinfo);
3548 /* We only need the columns if either
3549 1) some tap needs the columns
3551 2) we're printing packet info but we're *not* verbose; in verbose
3552 mode, we print the protocol tree, not the protocol summary.
3554 3) there is a column mapped as an individual field */
3555 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3560 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3561 &cf->provider.ref, cf->provider.prev_dis);
3562 if (cf->provider.ref == &fdata) {
3564 cf->provider.ref = &ref_frame;
3567 if (dissect_color) {
3568 color_filters_prime_edt(edt);
3569 fdata.flags.need_colorize = 1;
3572 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3573 frame_tvbuff_new(&cf->provider, &fdata, pd),
3576 /* Run the filter if we have it. */
3578 passed = dfilter_apply_edt(cf->dfcode, edt);
3582 frame_data_set_after_dissect(&fdata, &cum_bytes);
3584 /* Process this packet. */
3585 if (print_packet_info) {
3586 /* We're printing packet information; print the information for
3589 print_packet(cf, edt);
3591 /* If we're doing "line-buffering", flush the standard output
3592 after every packet. See the comment above, for the "-l"
3593 option, for an explanation of why we do that. */
3597 if (ferror(stdout)) {
3598 show_print_file_io_error(errno);
3603 /* this must be set after print_packet() [bug #8160] */
3604 prev_dis_frame = fdata;
3605 cf->provider.prev_dis = &prev_dis_frame;
3608 prev_cap_frame = fdata;
3609 cf->provider.prev_cap = &prev_cap_frame;
3612 epan_dissect_reset(edt);
3613 frame_data_destroy(&fdata);
3619 write_preamble(capture_file *cf)
3621 switch (output_action) {
3624 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3628 write_pdml_preamble(stdout, cf->filename);
3630 write_psml_preamble(&cf->cinfo, stdout);
3631 return !ferror(stdout);
3634 write_fields_preamble(output_fields, stdout);
3635 return !ferror(stdout);
3638 case WRITE_JSON_RAW:
3639 write_json_preamble(stdout);
3640 return !ferror(stdout);
3643 return !ferror(stdout);
3646 g_assert_not_reached();
3652 get_line_buf(size_t len)
3654 static char *line_bufp = NULL;
3655 static size_t line_buf_len = 256;
3656 size_t new_line_buf_len;
3658 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3659 new_line_buf_len *= 2)
3661 if (line_bufp == NULL) {
3662 line_buf_len = new_line_buf_len;
3663 line_bufp = (char *)g_malloc(line_buf_len + 1);
3665 if (new_line_buf_len > line_buf_len) {
3666 line_buf_len = new_line_buf_len;
3667 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3674 put_string(char *dest, const char *str, size_t str_len)
3676 memcpy(dest, str, str_len);
3677 dest[str_len] = '\0';
3681 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3685 for (i = str_len; i < str_with_spaces; i++)
3688 put_string(dest, str, str_len);
3692 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3696 memcpy(dest, str, str_len);
3697 for (i = str_len; i < str_with_spaces; i++)
3700 dest[str_with_spaces] = '\0';
3704 print_columns(capture_file *cf, const epan_dissect_t *edt)
3711 col_item_t* col_item;
3712 gchar str_format[11];
3713 const color_filter_t *color_filter = NULL;
3715 line_bufp = get_line_buf(256);
3720 color_filter = edt->pi.fd->color_filter;
3722 for (i = 0; i < cf->cinfo.num_cols; i++) {
3723 col_item = &cf->cinfo.columns[i];
3724 /* Skip columns not marked as visible. */
3725 if (!get_column_visible(i))
3727 switch (col_item->col_fmt) {
3729 column_len = col_len = strlen(col_item->col_data);
3732 line_bufp = get_line_buf(buf_offset + column_len);
3733 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3739 case COL_ABS_YMD_TIME: /* XXX - wider */
3740 case COL_ABS_YDOY_TIME: /* XXX - wider */
3742 case COL_UTC_YMD_TIME: /* XXX - wider */
3743 case COL_UTC_YDOY_TIME: /* XXX - wider */
3744 column_len = col_len = strlen(col_item->col_data);
3745 if (column_len < 10)
3747 line_bufp = get_line_buf(buf_offset + column_len);
3748 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3754 case COL_DEF_DL_SRC:
3755 case COL_RES_DL_SRC:
3756 case COL_UNRES_DL_SRC:
3757 case COL_DEF_NET_SRC:
3758 case COL_RES_NET_SRC:
3759 case COL_UNRES_NET_SRC:
3760 column_len = col_len = strlen(col_item->col_data);
3761 if (column_len < 12)
3763 line_bufp = get_line_buf(buf_offset + column_len);
3764 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3770 case COL_DEF_DL_DST:
3771 case COL_RES_DL_DST:
3772 case COL_UNRES_DL_DST:
3773 case COL_DEF_NET_DST:
3774 case COL_RES_NET_DST:
3775 case COL_UNRES_NET_DST:
3776 column_len = col_len = strlen(col_item->col_data);
3777 if (column_len < 12)
3779 line_bufp = get_line_buf(buf_offset + column_len);
3780 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3784 column_len = strlen(col_item->col_data);
3785 line_bufp = get_line_buf(buf_offset + column_len);
3786 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3789 buf_offset += column_len;
3790 if (i != cf->cinfo.num_cols - 1) {
3792 * This isn't the last column, so we need to print a
3793 * separator between this column and the next.
3795 * If we printed a network source and are printing a
3796 * network destination of the same type next, separate
3797 * them with a UTF-8 right arrow; if we printed a network
3798 * destination and are printing a network source of the same
3799 * type next, separate them with a UTF-8 left arrow;
3800 * otherwise separate them with a space.
3802 * We add enough space to the buffer for " \xe2\x86\x90 "
3803 * or " \xe2\x86\x92 ", even if we're only adding " ".
3805 line_bufp = get_line_buf(buf_offset + 5);
3806 switch (col_item->col_fmt) {
3811 switch (cf->cinfo.columns[i+1].col_fmt) {
3816 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3817 put_string(line_bufp + buf_offset, str_format, 5);
3822 put_string(line_bufp + buf_offset, delimiter_char, 1);
3828 case COL_DEF_DL_SRC:
3829 case COL_RES_DL_SRC:
3830 case COL_UNRES_DL_SRC:
3831 switch (cf->cinfo.columns[i+1].col_fmt) {
3833 case COL_DEF_DL_DST:
3834 case COL_RES_DL_DST:
3835 case COL_UNRES_DL_DST:
3836 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3837 put_string(line_bufp + buf_offset, str_format, 5);
3842 put_string(line_bufp + buf_offset, delimiter_char, 1);
3848 case COL_DEF_NET_SRC:
3849 case COL_RES_NET_SRC:
3850 case COL_UNRES_NET_SRC:
3851 switch (cf->cinfo.columns[i+1].col_fmt) {
3853 case COL_DEF_NET_DST:
3854 case COL_RES_NET_DST:
3855 case COL_UNRES_NET_DST:
3856 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3857 put_string(line_bufp + buf_offset, str_format, 5);
3862 put_string(line_bufp + buf_offset, delimiter_char, 1);
3871 switch (cf->cinfo.columns[i+1].col_fmt) {
3876 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3877 put_string(line_bufp + buf_offset, str_format, 5);
3882 put_string(line_bufp + buf_offset, delimiter_char, 1);
3888 case COL_DEF_DL_DST:
3889 case COL_RES_DL_DST:
3890 case COL_UNRES_DL_DST:
3891 switch (cf->cinfo.columns[i+1].col_fmt) {
3893 case COL_DEF_DL_SRC:
3894 case COL_RES_DL_SRC:
3895 case COL_UNRES_DL_SRC:
3896 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3897 put_string(line_bufp + buf_offset, str_format, 5);
3902 put_string(line_bufp + buf_offset, delimiter_char, 1);
3908 case COL_DEF_NET_DST:
3909 case COL_RES_NET_DST:
3910 case COL_UNRES_NET_DST:
3911 switch (cf->cinfo.columns[i+1].col_fmt) {
3913 case COL_DEF_NET_SRC:
3914 case COL_RES_NET_SRC:
3915 case COL_UNRES_NET_SRC:
3916 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3917 put_string(line_bufp + buf_offset, str_format, 5);
3922 put_string(line_bufp + buf_offset, delimiter_char, 1);
3929 put_string(line_bufp + buf_offset, delimiter_char, 1);
3936 if (dissect_color && color_filter != NULL)
3937 return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
3939 return print_line(print_stream, 0, line_bufp);
3943 print_packet(capture_file *cf, epan_dissect_t *edt)
3945 if (print_summary || output_fields_has_cols(output_fields))
3946 /* Just fill in the columns. */
3947 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3949 /* Print summary columns and/or protocol tree */
3950 switch (output_action) {
3953 if (print_summary && !print_columns(cf, edt))
3955 if (print_details) {
3956 if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
3957 print_hex, edt, output_only_tables, print_stream))
3960 if (!print_line(print_stream, 0, separator))
3967 if (print_summary) {
3968 write_psml_columns(edt, stdout, dissect_color);
3969 return !ferror(stdout);
3971 if (print_details) {
3972 write_pdml_proto_tree(output_fields, protocolfilter, protocolfilter_flags, edt, &cf->cinfo, stdout, dissect_color);
3974 return !ferror(stdout);
3979 if (print_summary) {
3980 /*No non-verbose "fields" format */
3981 g_assert_not_reached();
3983 if (print_details) {
3984 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3986 return !ferror(stdout);
3992 g_assert_not_reached();
3993 if (print_details) {
3994 write_json_proto_tree(output_fields, print_dissections_expanded,
3995 print_hex, protocolfilter, protocolfilter_flags,
3996 edt, &cf->cinfo, node_children_grouper, stdout);
3997 return !ferror(stdout);
4001 case WRITE_JSON_RAW:
4003 g_assert_not_reached();
4004 if (print_details) {
4005 write_json_proto_tree(output_fields, print_dissections_none, TRUE,
4006 protocolfilter, protocolfilter_flags,
4007 edt, &cf->cinfo, node_children_grouper, stdout);
4008 return !ferror(stdout);
4013 write_ek_proto_tree(output_fields, print_summary, print_hex, protocolfilter,
4014 protocolfilter_flags, edt, &cf->cinfo, stdout);
4015 return !ferror(stdout);
4019 if (print_summary || print_details) {
4020 if (!print_line(print_stream, 0, ""))
4023 if (!print_hex_data(print_stream, edt))
4025 if (!print_line(print_stream, 0, separator))
4034 switch (output_action) {
4037 return print_finale(print_stream);
4041 write_pdml_finale(stdout);
4043 write_psml_finale(stdout);
4044 return !ferror(stdout);
4047 write_fields_finale(output_fields, stdout);
4048 return !ferror(stdout);
4051 case WRITE_JSON_RAW:
4052 write_json_finale(stdout);
4053 return !ferror(stdout);
4056 return !ferror(stdout);
4059 g_assert_not_reached();
4065 cf_close(capture_file *cf)
4067 g_free(cf->filename);
4071 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4076 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4080 /* The open succeeded. Fill in the information for this file. */
4082 cf->provider.wth = wth;
4083 cf->f_datalen = 0; /* not used, but set it anyway */
4085 /* Set the file name because we need it to set the follow stream filter.
4086 XXX - is that still true? We need it for other reasons, though,
4088 cf->filename = g_strdup(fname);
4090 /* Indicate whether it's a permanent or temporary file. */
4091 cf->is_tempfile = is_tempfile;
4093 /* No user changes yet. */
4094 cf->unsaved_changes = FALSE;
4096 cf->cd_t = wtap_file_type_subtype(cf->provider.wth);
4097 cf->open_type = type;
4099 cf->drops_known = FALSE;
4101 cf->snap = wtap_snapshot_length(cf->provider.wth);
4102 nstime_set_zero(&cf->elapsed_time);
4103 cf->provider.ref = NULL;
4104 cf->provider.prev_dis = NULL;
4105 cf->provider.prev_cap = NULL;
4107 /* Create new epan session for dissection. */
4108 epan_free(cf->epan);
4109 cf->epan = tshark_epan_new(cf);
4111 wtap_set_cb_new_ipv4(cf->provider.wth, add_ipv4_name);
4112 wtap_set_cb_new_ipv6(cf->provider.wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4117 cfile_open_failure_message("TShark", fname, *err, err_info);
4122 show_print_file_io_error(int err)
4127 cmdarg_err("Not all the packets could be printed because there is "
4128 "no space left on the file system.");
4133 cmdarg_err("Not all the packets could be printed because you are "
4134 "too close to, or over your disk quota.");
4139 cmdarg_err("An error occurred while printing packets: %s.",
4146 * General errors and warnings are reported with an console message
4150 failure_warning_message(const char *msg_format, va_list ap)
4152 fprintf(stderr, "tshark: ");
4153 vfprintf(stderr, msg_format, ap);
4154 fprintf(stderr, "\n");
4158 * Open/create errors are reported with an console message in TShark.
4161 open_failure_message(const char *filename, int err, gboolean for_writing)
4163 fprintf(stderr, "tshark: ");
4164 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4165 fprintf(stderr, "\n");
4169 * Read errors are reported with an console message in TShark.
4172 read_failure_message(const char *filename, int err)
4174 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4175 filename, g_strerror(err));
4179 * Write errors are reported with an console message in TShark.
4182 write_failure_message(const char *filename, int err)
4184 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4185 filename, g_strerror(err));
4188 static void reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
4190 if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
4193 fprintf(stderr, "resetting session.\n");
4195 epan_dissect_cleanup(edt);
4196 epan_free(cf->epan);
4198 cf->epan = tshark_epan_new(cf);
4199 epan_dissect_init(edt, cf->epan, tree, visual);
4204 * Report additional information for an error in command-line arguments.
4207 failure_message_cont(const char *msg_format, va_list ap)
4209 vfprintf(stderr, msg_format, ap);
4210 fprintf(stderr, "\n");
4214 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4219 * indent-tabs-mode: nil
4222 * vi: set shiftwidth=2 tabstop=8 expandtab:
4223 * :indentSize=2:tabSize=8:noTabs=true: