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) {
1557 if (!output_file_name) {
1559 /* We're not saving the capture to a file; if "-q" wasn't specified,
1560 we should print packet information */
1562 print_packet_info = TRUE;
1565 const char *save_file = global_capture_opts.save_file;
1567 const char *save_file = output_file_name;
1569 /* We're saving to a file; if we're writing to the standard output.
1570 and we'll also be writing dissected packets to the standard
1571 output, reject the request. At best, we could redirect that
1572 to the standard error; we *can't* write both to the standard
1573 output and have either of them be useful. */
1574 if (strcmp(save_file, "-") == 0 && print_packet_info) {
1575 cmdarg_err("You can't write both raw packet data and dissected packets"
1576 " to the standard output.");
1577 exit_status = INVALID_OPTION;
1582 #ifndef HAVE_LIBPCAP
1583 if (capture_option_specified)
1584 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1587 print_usage(stderr);
1588 exit_status = INVALID_OPTION;
1593 if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
1594 cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
1595 exit_status = INVALID_OPTION;
1600 if (output_only != NULL) {
1603 if (!print_details) {
1604 cmdarg_err("-O requires -V");
1605 exit_status = INVALID_OPTION;
1609 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1610 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1611 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1615 if (rfilter != NULL && !perform_two_pass_analysis) {
1616 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1617 exit_status = INVALID_OPTION;
1623 /* We're supposed to list the link-layer/timestamp types for an interface;
1624 did the user also specify a capture file to be read? */
1626 /* Yes - that's bogus. */
1627 cmdarg_err("You can't specify %s and a capture file to be read.",
1628 caps_queries & CAPS_QUERY_LINK_TYPES ? "-L" : "--list-time-stamp-types");
1629 exit_status = INVALID_OPTION;
1632 /* No - did they specify a ring buffer option? */
1633 if (global_capture_opts.multi_files_on) {
1634 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1635 exit_status = INVALID_OPTION;
1641 * "-r" was specified, so we're reading a capture file.
1642 * Capture options don't apply here.
1645 /* We don't support capture filters when reading from a capture file
1646 (the BPF compiler doesn't support all link-layer types that we
1647 support in capture files we read). */
1648 if (global_capture_opts.default_options.cfilter) {
1649 cmdarg_err("Only read filters, not capture filters, "
1650 "can be specified when reading a capture file.");
1651 exit_status = INVALID_OPTION;
1654 if (global_capture_opts.multi_files_on) {
1655 cmdarg_err("Multiple capture files requested, but "
1656 "a capture isn't being done.");
1657 exit_status = INVALID_OPTION;
1660 if (global_capture_opts.has_file_duration) {
1661 cmdarg_err("Switching capture files after a time period was specified, but "
1662 "a capture isn't being done.");
1663 exit_status = INVALID_OPTION;
1666 if (global_capture_opts.has_file_interval) {
1667 cmdarg_err("Switching capture files after a time interval was specified, but "
1668 "a capture isn't being done.");
1669 exit_status = INVALID_OPTION;
1672 if (global_capture_opts.has_ring_num_files) {
1673 cmdarg_err("A ring buffer of capture files was specified, but "
1674 "a capture isn't being done.");
1675 exit_status = INVALID_OPTION;
1678 if (global_capture_opts.has_autostop_files) {
1679 cmdarg_err("A maximum number of capture files was specified, but "
1680 "a capture isn't being done.");
1681 exit_status = INVALID_OPTION;
1684 if (global_capture_opts.capture_comment) {
1685 cmdarg_err("A capture comment was specified, but "
1686 "a capture isn't being done.\nThere's no support for adding "
1687 "a capture comment to an existing capture file.");
1688 exit_status = INVALID_OPTION;
1692 /* Note: TShark now allows the restriction of a _read_ file by packet count
1693 * and byte count as well as a write file. Other autostop options remain valid
1694 * only for a write file.
1696 if (global_capture_opts.has_autostop_duration) {
1697 cmdarg_err("A maximum capture time was specified, but "
1698 "a capture isn't being done.");
1699 exit_status = INVALID_OPTION;
1704 * "-r" wasn't specified, so we're doing a live capture.
1706 if (perform_two_pass_analysis) {
1707 /* Two-pass analysis doesn't work with live capture since it requires us
1708 * to buffer packets until we've read all of them, but a live capture
1709 * has no useful/meaningful definition of "all" */
1710 cmdarg_err("Live captures do not support two-pass analysis.");
1711 exit_status = INVALID_OPTION;
1715 if (global_capture_opts.saving_to_file) {
1716 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1718 /* When capturing, we only support writing pcap or pcapng format. */
1719 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1720 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1721 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1722 exit_status = INVALID_OPTION;
1725 if (global_capture_opts.capture_comment &&
1726 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1727 cmdarg_err("A capture comment can only be written to a pcapng file.");
1728 exit_status = INVALID_OPTION;
1731 if (global_capture_opts.multi_files_on) {
1732 /* Multiple-file mode doesn't work under certain conditions:
1733 a) it doesn't work if you're writing to the standard output;
1734 b) it doesn't work if you're writing to a pipe;
1736 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1737 cmdarg_err("Multiple capture files requested, but "
1738 "the capture is being written to the standard output.");
1739 exit_status = INVALID_OPTION;
1742 if (global_capture_opts.output_to_pipe) {
1743 cmdarg_err("Multiple capture files requested, but "
1744 "the capture file is a pipe.");
1745 exit_status = INVALID_OPTION;
1748 if (!global_capture_opts.has_autostop_filesize &&
1749 !global_capture_opts.has_file_duration &&
1750 !global_capture_opts.has_file_interval) {
1751 cmdarg_err("Multiple capture files requested, but "
1752 "no maximum capture file size, duration or interval was specified.");
1753 exit_status = INVALID_OPTION;
1757 /* Currently, we don't support read or display filters when capturing
1758 and saving the packets. */
1759 if (rfilter != NULL) {
1760 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1761 exit_status = INVALID_OPTION;
1764 if (dfilter != NULL) {
1765 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1766 exit_status = INVALID_OPTION;
1769 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1771 /* They didn't specify a "-w" flag, so we won't be saving to a
1772 capture file. Check for options that only make sense if
1773 we're saving to a file. */
1774 if (global_capture_opts.has_autostop_filesize) {
1775 cmdarg_err("Maximum capture file size specified, but "
1776 "capture isn't being saved to a file.");
1777 exit_status = INVALID_OPTION;
1780 if (global_capture_opts.multi_files_on) {
1781 cmdarg_err("Multiple capture files requested, but "
1782 "the capture isn't being saved to a file.");
1783 exit_status = INVALID_OPTION;
1786 if (global_capture_opts.capture_comment) {
1787 cmdarg_err("A capture comment was specified, but "
1788 "the capture isn't being saved to a file.");
1789 exit_status = INVALID_OPTION;
1798 /* Start windows sockets */
1799 result = WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1802 exit_status = INIT_FAILED;
1807 /* Notify all registered modules that have had any of their preferences
1808 changed either from one of the preferences file or from the command
1809 line that their preferences have changed. */
1812 /* We can also enable specified taps for export object */
1813 start_exportobjects();
1815 /* At this point MATE will have registered its field array so we can
1816 check if the fields specified by the user are all good.
1820 GSList *invalid_fields = output_fields_valid(output_fields);
1821 if (invalid_fields != NULL) {
1823 cmdarg_err("Some fields aren't valid:");
1824 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
1825 cmdarg_err_cont("\t%s", (gchar *)it->data);
1827 g_slist_free(invalid_fields);
1828 exit_status = INVALID_OPTION;
1833 /* We currently don't support taps, or printing dissected packets,
1834 if we're writing to a pipe. */
1835 if (global_capture_opts.saving_to_file &&
1836 global_capture_opts.output_to_pipe) {
1837 if (tap_listeners_require_dissection()) {
1838 cmdarg_err("Taps aren't supported when saving to a pipe.");
1839 exit_status = INVALID_OPTION;
1842 if (print_packet_info) {
1843 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1844 exit_status = INVALID_OPTION;
1850 if (ex_opt_count("read_format") > 0) {
1851 const gchar* name = ex_opt_get_next("read_format");
1852 in_file_type = open_info_name_to_type(name);
1853 if (in_file_type == WTAP_TYPE_AUTO) {
1854 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1855 list_read_capture_types();
1856 exit_status = INVALID_OPTION;
1861 timestamp_set_type(global_dissect_options.time_format);
1864 * Enabled and disabled protocols and heuristic dissectors as per
1865 * command-line options.
1867 if (!setup_enabled_and_disabled_protocols()) {
1868 exit_status = INVALID_OPTION;
1872 /* Build the column format array */
1873 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1876 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1877 capture_opts_trim_ring_num_files(&global_capture_opts);
1880 if (rfilter != NULL) {
1881 tshark_debug("Compiling read filter: '%s'", rfilter);
1882 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
1883 cmdarg_err("%s", err_msg);
1887 #ifdef HAVE_PCAP_OPEN_DEAD
1891 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1893 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1895 " Note: That read filter code looks like a valid capture filter;\n"
1896 " maybe you mixed them up?");
1902 exit_status = INVALID_INTERFACE;
1906 cfile.rfcode = rfcode;
1908 if (dfilter != NULL) {
1909 tshark_debug("Compiling display filter: '%s'", dfilter);
1910 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1911 cmdarg_err("%s", err_msg);
1915 #ifdef HAVE_PCAP_OPEN_DEAD
1919 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1921 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1923 " Note: That display filter code looks like a valid capture filter;\n"
1924 " maybe you mixed them up?");
1930 exit_status = INVALID_FILTER;
1934 cfile.dfcode = dfcode;
1936 if (print_packet_info) {
1937 /* If we're printing as text or PostScript, we have
1938 to create a print stream. */
1939 if (output_action == WRITE_TEXT) {
1940 switch (print_format) {
1943 print_stream = print_stream_text_stdio_new(stdout);
1947 print_stream = print_stream_ps_stdio_new(stdout);
1951 g_assert_not_reached();
1956 /* PDU export requested. Take the ownership of the '-w' file, apply tap
1957 * filters and start tapping. */
1958 if (pdu_export_arg) {
1959 const char *exp_pdu_tap_name = pdu_export_arg;
1960 const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
1961 char *exp_pdu_error;
1966 cmdarg_err("PDUs export requires a capture file (specify with -r).");
1967 exit_status = INVALID_OPTION;
1970 /* Take ownership of the '-w' output file. */
1972 exp_pdu_filename = global_capture_opts.save_file;
1973 global_capture_opts.save_file = NULL;
1975 exp_pdu_filename = output_file_name;
1976 output_file_name = NULL;
1978 if (exp_pdu_filename == NULL) {
1979 cmdarg_err("PDUs export requires an output file (-w).");
1980 exit_status = INVALID_OPTION;
1984 exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
1986 if (exp_pdu_error) {
1987 cmdarg_err("Cannot register tap: %s", exp_pdu_error);
1988 g_free(exp_pdu_error);
1989 exit_status = INVALID_TAP;
1993 if (strcmp(exp_pdu_filename, "-") == 0) {
1994 /* Write to the standard output. */
1997 exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
1999 cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
2000 exit_status = INVALID_FILE;
2005 /* Activate the export PDU tap */
2006 comment = g_strdup_printf("Dump of PDUs from %s", cf_name);
2007 err = exp_pdu_open(&exp_pdu_tap_data, exp_fd, comment);
2009 cfile_dump_open_failure_message("TShark", exp_pdu_filename, err,
2010 WTAP_FILE_TYPE_SUBTYPE_PCAPNG);
2012 exit_status = INVALID_EXPORT;
2017 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2020 tshark_debug("tshark: Opening capture file: %s", cf_name);
2022 * We're reading a capture file.
2024 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2027 exit_status = INVALID_FILE;
2031 /* Start statistics taps; we do so after successfully opening the
2032 capture file, so we know we have something to compute stats
2033 on, and after registering all dissectors, so that MATE will
2034 have registered its field array so we can have a tap filter
2035 with one of MATE's late-registered fields as part of the
2037 start_requested_stats();
2039 /* Do we need to do dissection of packets? That depends on, among
2040 other things, what taps are listening, so determine that after
2041 starting the statistics taps. */
2042 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2044 /* Process the packets in the file */
2045 tshark_debug("tshark: invoking process_cap_file() to process the packets");
2048 success = process_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2049 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2050 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2052 success = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2055 CATCH(OutOfMemoryError) {
2059 "Sorry, but TShark has to terminate now.\n"
2061 "More information and workarounds can be found at\n"
2062 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2068 /* We still dump out the results of taps, etc., as we might have
2069 read some packets; however, we exit with an error status. */
2073 if (pdu_export_arg) {
2074 err = exp_pdu_close(&exp_pdu_tap_data);
2076 cfile_close_failure_message(exp_pdu_filename, err);
2079 g_free(pdu_export_arg);
2080 g_free(exp_pdu_filename);
2083 tshark_debug("tshark: no capture file specified");
2084 /* No capture file specified, so we're supposed to do a live capture
2085 or get a list of link-layer types for a live capture device;
2086 do we have support for live captures? */
2089 /* Warn the user if npf.sys isn't loaded. */
2090 if (!npf_sys_is_running()) {
2091 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
2092 "capturing or\nlisting interfaces.\n");
2096 /* if no interface was specified, pick a default */
2097 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2098 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2099 if (exit_status != 0) {
2103 /* if requested, list the link layer types and exit */
2107 /* Get the list of link-layer types for the capture devices. */
2108 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2109 interface_options *interface_opts;
2110 if_capabilities_t *caps;
2111 char *auth_str = NULL;
2112 int if_caps_queries = caps_queries;
2114 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2115 #ifdef HAVE_PCAP_REMOTE
2116 if (interface_opts->auth_type == CAPTURE_AUTH_PWD) {
2117 auth_str = g_strdup_printf("%s:%s", interface_opts->auth_username, interface_opts->auth_password);
2120 caps = capture_get_if_capabilities(interface_opts->name, interface_opts->monitor_mode, auth_str, &err_str, NULL);
2123 cmdarg_err("%s", err_str);
2125 exit_status = INVALID_CAPABILITY;
2128 if ((if_caps_queries & CAPS_QUERY_LINK_TYPES) && caps->data_link_types == NULL) {
2129 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts->name);
2130 exit_status = INVALID_DATA_LINK;
2133 if ((if_caps_queries & CAPS_QUERY_TIMESTAMP_TYPES) && caps->timestamp_types == NULL) {
2134 cmdarg_err("The capture device \"%s\" has no timestamp types.", interface_opts->name);
2135 exit_status = INVALID_TIMESTAMP_TYPE;
2138 if (interface_opts->monitor_mode)
2139 if_caps_queries |= CAPS_MONITOR_MODE;
2140 capture_opts_print_if_capabilities(caps, interface_opts->name, if_caps_queries);
2141 free_if_capabilities(caps);
2143 exit_status = EXIT_SUCCESS;
2148 * If the standard error isn't a terminal, don't print packet counts,
2149 * as they won't show up on the user's terminal and they'll get in
2150 * the way of error messages in the file (to which we assume the
2151 * standard error was redirected; if it's redirected to the null
2152 * device, there's no point in printing packet counts anyway).
2154 * Otherwise, if we're printing packet information and the standard
2155 * output is a terminal (which we assume means the standard output and
2156 * error are going to the same terminal), don't print packet counts,
2157 * as they'll get in the way of the packet information.
2159 * Otherwise, if the user specified -q, don't print packet counts.
2161 * Otherwise, print packet counts.
2163 * XXX - what if the user wants to do a live capture, doesn't want
2164 * to save it to a file, doesn't want information printed for each
2165 * packet, does want some "-z" statistic, and wants packet counts
2166 * so they know whether they're seeing any packets? -q will
2167 * suppress the information printed for each packet, but it'll
2168 * also suppress the packet counts.
2170 if (!ws_isatty(ws_fileno(stderr)))
2171 print_packet_counts = FALSE;
2172 else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
2173 print_packet_counts = FALSE;
2175 print_packet_counts = FALSE;
2177 print_packet_counts = TRUE;
2179 if (print_packet_info) {
2180 if (!write_preamble(&cfile)) {
2181 show_print_file_io_error(errno);
2182 exit_status = INVALID_FILE;
2187 tshark_debug("tshark: performing live capture");
2189 /* Start statistics taps; we should only do so after the capture
2190 started successfully, so we know we have something to compute
2191 stats, but we currently don't check for that - see below.
2193 We do so after registering all dissectors, so that MATE will
2194 have registered its field array so we can have a tap filter
2195 with one of MATE's late-registered fields as part of the
2197 start_requested_stats();
2199 /* Do we need to do dissection of packets? That depends on, among
2200 other things, what taps are listening, so determine that after
2201 starting the statistics taps. */
2202 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2205 * XXX - this returns FALSE if an error occurred, but it also
2206 * returns FALSE if the capture stops because a time limit
2207 * was reached (and possibly other limits), so we can't assume
2208 * it means an error.
2210 * The capture code is a bit twisty, so it doesn't appear to
2211 * be an easy fix. We just ignore the return value for now.
2212 * Instead, pass on the exit status from the capture child.
2215 exit_status = global_capture_session.fork_child_status;
2217 if (print_packet_info) {
2218 if (!write_finale()) {
2219 show_print_file_io_error(errno);
2223 /* No - complain. */
2224 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2225 exit_status = INVALID_CAPTURE;
2230 if (cfile.provider.frames != NULL) {
2231 free_frame_data_sequence(cfile.provider.frames);
2232 cfile.provider.frames = NULL;
2235 draw_tap_listeners(TRUE);
2236 /* Memory cleanup */
2237 reset_tap_listeners();
2238 funnel_dump_all_text_windows();
2239 epan_free(cfile.epan);
2243 output_fields_free(output_fields);
2244 output_fields = NULL;
2248 destroy_print_stream(print_stream);
2250 capture_opts_cleanup(&global_capture_opts);
2252 g_free(output_file_name);
2254 col_cleanup(&cfile.cinfo);
2255 free_filter_lists();
2259 dfilter_free(dfcode);
2265 wmain(int argc, wchar_t *wc_argv[])
2269 argv = arg_list_utf_16to8(argc, wc_argv);
2270 return real_main(argc, argv);
2274 main(int argc, char *argv[])
2276 return real_main(argc, argv);
2280 /*#define USE_BROKEN_G_MAIN_LOOP*/
2282 #ifdef USE_BROKEN_G_MAIN_LOOP
2285 gboolean loop_running = FALSE;
2287 guint32 packet_count = 0;
2290 typedef struct pipe_input_tag {
2293 ws_process_id *child_process;
2294 pipe_input_cb_t input_cb;
2295 guint pipe_input_id;
2297 GMutex *callback_running;
2301 static pipe_input_t pipe_input;
2304 /* The timer has expired, see if there's stuff to read from the pipe,
2305 if so, do the callback */
2307 pipe_timer_cb(gpointer data)
2313 pipe_input_t *pipe_input_p = data;
2314 gint iterations = 0;
2316 g_mutex_lock (pipe_input_p->callback_running);
2318 /* try to read data from the pipe only 5 times, to avoid blocking */
2319 while(iterations < 5) {
2320 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2322 /* Oddly enough although Named pipes don't work on win9x,
2323 PeekNamedPipe does !!! */
2324 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2325 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2327 /* Get the child process exit status */
2328 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2331 /* If the Peek returned an error, or there are bytes to be read
2332 or the childwatcher thread has terminated then call the normal
2334 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2336 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2338 /* And call the real handler */
2339 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2340 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2341 /* pipe closed, return false so that the timer is stopped */
2342 g_mutex_unlock (pipe_input_p->callback_running);
2347 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2348 /* No data, stop now */
2355 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2357 g_mutex_unlock (pipe_input_p->callback_running);
2359 /* we didn't stopped the timer, so let it run */
2366 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2369 pipe_input.source = source;
2370 pipe_input.child_process = child_process;
2371 pipe_input.user_data = user_data;
2372 pipe_input.input_cb = input_cb;
2375 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2376 g_mutex_init(pipe_input.callback_running);
2377 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2378 do this but that doesn't cover all win32 platforms. GTK can do
2379 this but doesn't seem to work over processes. Attempt to do
2380 something similar here, start a timer and check for data on every
2382 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2383 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2387 static const nstime_t *
2388 tshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
2390 if (prov->ref && prov->ref->num == frame_num)
2391 return &prov->ref->abs_ts;
2393 if (prov->prev_dis && prov->prev_dis->num == frame_num)
2394 return &prov->prev_dis->abs_ts;
2396 if (prov->prev_cap && prov->prev_cap->num == frame_num)
2397 return &prov->prev_cap->abs_ts;
2400 frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
2402 return (fd) ? &fd->abs_ts : NULL;
2409 tshark_epan_new(capture_file *cf)
2411 static const struct packet_provider_funcs funcs = {
2412 tshark_get_frame_ts,
2413 cap_file_provider_get_interface_name,
2414 cap_file_provider_get_interface_description,
2418 return epan_new(&cf->provider, &funcs);
2425 volatile gboolean ret = TRUE;
2428 #ifdef USE_TSHARK_SELECT
2432 struct sigaction action, oldaction;
2435 /* Create new dissection section. */
2436 epan_free(cfile.epan);
2437 cfile.epan = tshark_epan_new(&cfile);
2440 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2441 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2443 /* Catch SIGINT and SIGTERM and, if we get either of them,
2444 clean up and exit. If SIGHUP isn't being ignored, catch
2445 it too and, if we get it, clean up and exit.
2447 We restart any read that was in progress, so that it doesn't
2448 disrupt reading from the sync pipe. The signal handler tells
2449 the capture child to finish; it will report that it finished,
2450 or will exit abnormally, so we'll stop reading from the sync
2451 pipe, pick up the exit status, and quit. */
2452 memset(&action, 0, sizeof(action));
2453 action.sa_handler = capture_cleanup;
2454 action.sa_flags = SA_RESTART;
2455 sigemptyset(&action.sa_mask);
2456 sigaction(SIGTERM, &action, NULL);
2457 sigaction(SIGINT, &action, NULL);
2458 sigaction(SIGHUP, NULL, &oldaction);
2459 if (oldaction.sa_handler == SIG_DFL)
2460 sigaction(SIGHUP, &action, NULL);
2463 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2464 quiet mode, report the number of packets we've captured.
2466 Again, restart any read that was in progress, so that it doesn't
2467 disrupt reading from the sync pipe. */
2468 action.sa_handler = report_counts_siginfo;
2469 action.sa_flags = SA_RESTART;
2470 sigemptyset(&action.sa_mask);
2471 sigaction(SIGINFO, &action, NULL);
2472 #endif /* SIGINFO */
2475 global_capture_session.state = CAPTURE_PREPARING;
2477 /* Let the user know which interfaces were chosen. */
2478 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2479 interface_options *interface_opts;
2481 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2482 interface_opts->descr = get_interface_descriptive_name(interface_opts->name);
2484 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2485 if (really_quiet == FALSE)
2486 fprintf(stderr, "Capturing on %s\n", str->str);
2488 g_string_free(str, TRUE);
2490 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2496 * Force synchronous resolution of IP addresses; we're doing only
2497 * one pass, so we can't do it in the background and fix up past
2500 set_resolution_synchrony(TRUE);
2502 /* the actual capture loop
2504 * XXX - glib doesn't seem to provide any event based loop handling.
2506 * XXX - for whatever reason,
2507 * calling g_main_loop_new() ends up in 100% cpu load.
2509 * But that doesn't matter: in UNIX we can use select() to find an input
2510 * source with something to do.
2512 * But that doesn't matter because we're in a CLI (that doesn't need to
2513 * update a GUI or something at the same time) so it's OK if we block
2514 * trying to read from the pipe.
2516 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2517 * wrong (but I leave it there in case I am...).
2520 #ifdef USE_TSHARK_SELECT
2522 FD_SET(pipe_input.source, &readfds);
2525 loop_running = TRUE;
2529 while (loop_running)
2531 #ifdef USE_TSHARK_SELECT
2532 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2536 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2538 loop_running = FALSE;
2539 } else if (ret == 1) {
2541 /* Call the real handler */
2542 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2543 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2545 loop_running = FALSE;
2547 #ifdef USE_TSHARK_SELECT
2552 CATCH(OutOfMemoryError) {
2556 "Sorry, but TShark has to terminate now.\n"
2558 "More information and workarounds can be found at\n"
2559 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2566 /* capture child detected an error */
2568 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2570 cmdarg_err("%s", error_msg);
2571 cmdarg_err_cont("%s", secondary_error_msg);
2575 /* capture child detected an capture filter related error */
2577 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2579 capture_options *capture_opts = cap_session->capture_opts;
2580 dfilter_t *rfcode = NULL;
2581 interface_options *interface_opts;
2583 g_assert(i < capture_opts->ifaces->len);
2584 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
2586 if (dfilter_compile(interface_opts->cfilter, &rfcode, NULL) && rfcode != NULL) {
2588 "Invalid capture filter \"%s\" for interface '%s'.\n"
2590 "That string looks like a valid display filter; however, it isn't a valid\n"
2591 "capture filter (%s).\n"
2593 "Note that display filters and capture filters don't have the same syntax,\n"
2594 "so you can't use most display filter expressions as capture filters.\n"
2596 "See the User's Guide for a description of the capture filter syntax.",
2597 interface_opts->cfilter, interface_opts->descr, error_message);
2598 dfilter_free(rfcode);
2601 "Invalid capture filter \"%s\" for interface '%s'.\n"
2603 "That string isn't a valid capture filter (%s).\n"
2604 "See the User's Guide for a description of the capture filter syntax.",
2605 interface_opts->cfilter, interface_opts->descr, error_message);
2610 /* capture child tells us we have a new (or the first) capture file */
2612 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2614 capture_options *capture_opts = cap_session->capture_opts;
2615 capture_file *cf = (capture_file *) cap_session->cf;
2616 gboolean is_tempfile;
2619 if (cap_session->state == CAPTURE_PREPARING) {
2620 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2622 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2624 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2626 /* free the old filename */
2627 if (capture_opts->save_file != NULL) {
2629 /* we start a new capture file, close the old one (if we had one before) */
2630 if (cf->state != FILE_CLOSED) {
2631 if (cf->provider.wth != NULL) {
2632 wtap_close(cf->provider.wth);
2633 cf->provider.wth = NULL;
2635 cf->state = FILE_CLOSED;
2638 g_free(capture_opts->save_file);
2639 is_tempfile = FALSE;
2641 epan_free(cf->epan);
2642 cf->epan = tshark_epan_new(cf);
2644 /* we didn't had a save_file before, must be a tempfile */
2648 /* save the new filename */
2649 capture_opts->save_file = g_strdup(new_file);
2651 /* if we are in real-time mode, open the new file now */
2652 if (do_dissection) {
2653 /* this is probably unecessary, but better safe than sorry */
2654 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2655 /* Attempt to open the capture file and set up to read from it. */
2656 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2660 /* Don't unlink (delete) the save file - leave it around,
2661 for debugging purposes. */
2662 g_free(capture_opts->save_file);
2663 capture_opts->save_file = NULL;
2668 cap_session->state = CAPTURE_RUNNING;
2674 /* capture child tells us we have new packets to read */
2676 capture_input_new_packets(capture_session *cap_session, int to_read)
2682 capture_file *cf = (capture_file *)cap_session->cf;
2683 gboolean filtering_tap_listeners;
2688 * Prevent a SIGINFO handler from writing to the standard error while
2689 * we're doing so or writing to the standard output; instead, have it
2690 * just set a flag telling us to print that information when we're done.
2693 #endif /* SIGINFO */
2695 /* Do we have any tap listeners with filters? */
2696 filtering_tap_listeners = have_filtering_tap_listeners();
2698 /* Get the union of the flags for all tap listeners. */
2699 tap_flags = union_of_tap_listener_flags();
2701 if (do_dissection) {
2702 gboolean create_proto_tree;
2703 epan_dissect_t *edt;
2706 * Determine whether we need to create a protocol tree.
2709 * we're going to apply a read filter;
2711 * we're going to apply a display filter;
2713 * we're going to print the protocol tree;
2715 * one of the tap listeners is going to apply a filter;
2717 * one of the tap listeners requires a protocol tree;
2719 * a postdissector wants field values or protocols
2720 * on the first pass;
2722 * we have custom columns (which require field values, which
2723 * currently requires that we build a protocol tree).
2726 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2727 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
2728 have_custom_cols(&cf->cinfo) || dissect_color);
2730 /* The protocol tree will be "visible", i.e., printed, only if we're
2731 printing packet details, which is true if we're printing stuff
2732 ("print_packet_info" is true) and we're in verbose mode
2733 ("packet_details" is true). */
2734 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2736 while (to_read-- && cf->provider.wth) {
2737 wtap_cleareof(cf->provider.wth);
2738 ret = wtap_read(cf->provider.wth, &err, &err_info, &data_offset);
2739 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
2741 /* read from file failed, tell the capture child to stop */
2742 sync_pipe_stop(cap_session);
2743 wtap_close(cf->provider.wth);
2744 cf->provider.wth = NULL;
2746 ret = process_packet_single_pass(cf, edt, data_offset,
2747 wtap_get_rec(cf->provider.wth),
2748 wtap_get_buf_ptr(cf->provider.wth), tap_flags);
2751 /* packet successfully read and gone through the "Read Filter" */
2756 epan_dissect_free(edt);
2760 * Dumpcap's doing all the work; we're not doing any dissection.
2761 * Count all the packets it wrote.
2763 packet_count += to_read;
2766 if (print_packet_counts) {
2767 /* We're printing packet counts. */
2768 if (packet_count != 0) {
2769 fprintf(stderr, "\r%u ", packet_count);
2770 /* stderr could be line buffered */
2777 * Allow SIGINFO handlers to write.
2782 * If a SIGINFO handler asked us to write out capture counts, do so.
2786 #endif /* SIGINFO */
2792 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2793 /* Report the count only if we aren't printing a packet count
2794 as packets arrive. */
2795 fprintf(stderr, "%u packet%s captured\n", packet_count,
2796 plurality(packet_count, "", "s"));
2799 infoprint = FALSE; /* we just reported it */
2800 #endif /* SIGINFO */
2805 report_counts_siginfo(int signum _U_)
2807 int sav_errno = errno;
2808 /* If we've been told to delay printing, just set a flag asking
2809 that we print counts (if we're supposed to), otherwise print
2810 the count of packets captured (if we're supposed to). */
2817 #endif /* SIGINFO */
2820 /* capture child detected any packet drops? */
2822 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2824 if (print_packet_counts) {
2825 /* We're printing packet counts to stderr.
2826 Send a newline so that we move to the line after the packet count. */
2827 fprintf(stderr, "\n");
2831 /* We're printing packet counts to stderr.
2832 Send a newline so that we move to the line after the packet count. */
2833 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2839 * Capture child closed its side of the pipe, report any error and
2840 * do the required cleanup.
2843 capture_input_closed(capture_session *cap_session, gchar *msg)
2845 capture_file *cf = (capture_file *) cap_session->cf;
2848 fprintf(stderr, "tshark: %s\n", msg);
2852 if (cf != NULL && cf->provider.wth != NULL) {
2853 wtap_close(cf->provider.wth);
2854 if (cf->is_tempfile) {
2855 ws_unlink(cf->filename);
2858 #ifdef USE_BROKEN_G_MAIN_LOOP
2859 /*g_main_loop_quit(loop);*/
2860 g_main_loop_quit(loop);
2862 loop_running = FALSE;
2871 capture_cleanup(DWORD ctrltype _U_)
2873 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2874 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2875 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2876 like SIGTERM at least when the machine's shutting down.
2878 For now, we handle them all as indications that we should clean up
2879 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2882 We must return TRUE so that no other handler - such as one that would
2883 terminate the process - gets called.
2885 XXX - for some reason, typing ^C to TShark, if you run this in
2886 a Cygwin console window in at least some versions of Cygwin,
2887 causes TShark to terminate immediately; this routine gets
2888 called, but the main loop doesn't get a chance to run and
2889 exit cleanly, at least if this is compiled with Microsoft Visual
2890 C++ (i.e., it's a property of the Cygwin console window or Bash;
2891 it happens if TShark is not built with Cygwin - for all I know,
2892 building it with Cygwin may make the problem go away). */
2894 /* tell the capture child to stop */
2895 sync_pipe_stop(&global_capture_session);
2897 /* don't stop our own loop already here, otherwise status messages and
2898 * cleanup wouldn't be done properly. The child will indicate the stop of
2899 * everything by calling capture_input_closed() later */
2905 capture_cleanup(int signum _U_)
2907 /* tell the capture child to stop */
2908 sync_pipe_stop(&global_capture_session);
2910 /* don't stop our own loop already here, otherwise status messages and
2911 * cleanup wouldn't be done properly. The child will indicate the stop of
2912 * everything by calling capture_input_closed() later */
2915 #endif /* HAVE_LIBPCAP */
2918 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2919 gint64 offset, wtap_rec *rec,
2926 /* The frame number of this packet is one more than the count of
2927 frames in this packet. */
2928 framenum = cf->count + 1;
2930 /* If we're not running a display filter and we're not printing any
2931 packet information, we don't need to do a dissection. This means
2932 that all packets can be marked as 'passed'. */
2935 frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
2937 /* If we're going to run a read filter or a display filter, set up to
2938 do a dissection and do so. (This is the first pass of two passes
2939 over the packets, so we will not be printing any information
2940 from the dissection or running taps on the packet; if we're doing
2941 any of that, we'll do it in the second pass.) */
2943 /* If we're running a read filter, prime the epan_dissect_t with that
2946 epan_dissect_prime_with_dfilter(edt, cf->rfcode);
2949 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2951 /* This is the first pass, so prime the epan_dissect_t with the
2952 hfids postdissectors want on the first pass. */
2953 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
2955 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2956 &cf->provider.ref, cf->provider.prev_dis);
2957 if (cf->provider.ref == &fdlocal) {
2958 ref_frame = fdlocal;
2959 cf->provider.ref = &ref_frame;
2962 epan_dissect_run(edt, cf->cd_t, rec,
2963 frame_tvbuff_new(&cf->provider, &fdlocal, pd),
2966 /* Run the read filter if we have one. */
2968 passed = dfilter_apply_edt(cf->rfcode, edt);
2972 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2973 cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
2975 /* If we're not doing dissection then there won't be any dependent frames.
2976 * More importantly, edt.pi.dependent_frames won't be initialized because
2977 * epan hasn't been initialized.
2978 * if we *are* doing dissection, then mark the dependent frames, but only
2979 * if a display filter was given and it matches this packet.
2981 if (edt && cf->dfcode) {
2982 if (dfilter_apply_edt(cf->dfcode, edt)) {
2983 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
2989 /* if we don't add it to the frame_data_sequence, clean it up right now
2991 frame_data_destroy(&fdlocal);
2995 epan_dissect_reset(edt);
3001 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
3002 frame_data *fdata, wtap_rec *rec,
3003 Buffer *buf, guint tap_flags)
3008 /* If we're not running a display filter and we're not printing any
3009 packet information, we don't need to do a dissection. This means
3010 that all packets can be marked as 'passed'. */
3013 /* If we're going to print packet information, or we're going to
3014 run a read filter, or we're going to process taps, set up to
3015 do a dissection and do so. (This is the second pass of two
3016 passes over the packets; that's the pass where we print
3017 packet information or run taps.) */
3019 /* If we're running a display filter, prime the epan_dissect_t with that
3022 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3024 col_custom_prime_edt(edt, &cf->cinfo);
3026 /* We only need the columns if either
3027 1) some tap needs the columns
3029 2) we're printing packet info but we're *not* verbose; in verbose
3030 mode, we print the protocol tree, not the protocol summary.
3032 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3037 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3038 &cf->provider.ref, cf->provider.prev_dis);
3039 if (cf->provider.ref == fdata) {
3041 cf->provider.ref = &ref_frame;
3044 if (dissect_color) {
3045 color_filters_prime_edt(edt);
3046 fdata->flags.need_colorize = 1;
3049 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3050 frame_tvbuff_new_buffer(&cf->provider, fdata, buf),
3053 /* Run the read/display filter if we have one. */
3055 passed = dfilter_apply_edt(cf->dfcode, edt);
3059 frame_data_set_after_dissect(fdata, &cum_bytes);
3060 /* Process this packet. */
3061 if (print_packet_info) {
3062 /* We're printing packet information; print the information for
3064 print_packet(cf, edt);
3066 /* If we're doing "line-buffering", flush the standard output
3067 after every packet. See the comment above, for the "-l"
3068 option, for an explanation of why we do that. */
3072 if (ferror(stdout)) {
3073 show_print_file_io_error(errno);
3077 cf->provider.prev_dis = fdata;
3079 cf->provider.prev_cap = fdata;
3082 epan_dissect_reset(edt);
3084 return passed || fdata->flags.dependent_of_displayed;
3088 process_cap_file(capture_file *cf, char *save_file, int out_file_type,
3089 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3091 gboolean success = TRUE;
3094 int err = 0, err_pass1 = 0;
3095 gchar *err_info = NULL, *err_info_pass1 = NULL;
3097 gboolean filtering_tap_listeners;
3099 wtap_dump_params params = WTAP_DUMP_PARAMS_INIT;
3102 epan_dissect_t *edt = NULL;
3103 char *shb_user_appl;
3105 wtap_rec_init(&rec);
3107 if (save_file != NULL) {
3108 /* Set up to write to the capture file. */
3109 wtap_dump_params_init(¶ms, cf->provider.wth);
3111 /* If we don't have an application name add Tshark */
3112 if (wtap_block_get_string_option_value(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
3113 /* this is free'd by wtap_block_free() later */
3114 wtap_block_add_string_option_format(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "TShark (Wireshark) %s", get_ws_vcs_version_info());
3117 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3118 if (strcmp(save_file, "-") == 0) {
3119 /* Write to the standard output. */
3120 pdh = wtap_dump_open_stdout(out_file_type, WTAP_UNCOMPRESSED, ¶ms,
3123 pdh = wtap_dump_open(save_file, out_file_type, WTAP_UNCOMPRESSED, ¶ms,
3127 g_free(params.idb_inf);
3128 params.idb_inf = NULL;
3131 /* We couldn't set up to write to the capture file. */
3132 cfile_dump_open_failure_message("TShark", save_file, err, out_file_type);
3137 /* Set up to print packet information. */
3138 if (print_packet_info) {
3139 if (!write_preamble(cf)) {
3140 show_print_file_io_error(errno);
3148 /* Do we have any tap listeners with filters? */
3149 filtering_tap_listeners = have_filtering_tap_listeners();
3151 /* Get the union of the flags for all tap listeners. */
3152 tap_flags = union_of_tap_listener_flags();
3154 if (perform_two_pass_analysis) {
3157 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3159 /* Allocate a frame_data_sequence for all the frames. */
3160 cf->provider.frames = new_frame_data_sequence();
3162 if (do_dissection) {
3163 gboolean create_proto_tree;
3166 * Determine whether we need to create a protocol tree.
3169 * we're going to apply a read filter;
3171 * we're going to apply a display filter;
3173 * a postdissector wants field values or protocols
3174 * on the first pass.
3177 (cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
3179 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3181 /* We're not going to display the protocol tree on this pass,
3182 so it's not going to be "visible". */
3183 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3186 tshark_debug("tshark: reading records for first pass");
3187 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3188 if (process_packet_first_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3189 wtap_get_buf_ptr(cf->provider.wth))) {
3190 /* Stop reading if we have the maximum number of packets;
3191 * When the -c option has not been used, max_packet_count
3192 * starts at 0, which practically means, never stop reading.
3193 * (unless we roll over max_packet_count ?)
3195 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3196 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3197 max_packet_count, data_offset, max_byte_count);
3198 err = 0; /* This is not an error */
3205 * If we got a read error on the first pass, remember the error, so
3206 * but do the second pass, so we can at least process the packets we
3207 * read, and then report the first-pass error after the second pass
3208 * (and before we report any second-pass errors), so all the the
3209 * errors show up at the end.
3213 err_info_pass1 = err_info;
3219 epan_dissect_free(edt);
3223 /* Close the sequential I/O side, to free up memory it requires. */
3224 wtap_sequential_close(cf->provider.wth);
3226 /* Allow the protocol dissectors to free up memory that they
3227 * don't need after the sequential run-through of the packets. */
3228 postseq_cleanup_all_protocols();
3230 cf->provider.prev_dis = NULL;
3231 cf->provider.prev_cap = NULL;
3232 ws_buffer_init(&buf, 1500);
3234 tshark_debug("tshark: done with first pass");
3236 if (do_dissection) {
3237 gboolean create_proto_tree;
3240 * Determine whether we need to create a protocol tree.
3243 * we're going to apply a display filter;
3245 * we're going to print the protocol tree;
3247 * one of the tap listeners requires a protocol tree;
3249 * we have custom columns (which require field values, which
3250 * currently requires that we build a protocol tree).
3253 (cf->dfcode || print_details || filtering_tap_listeners ||
3254 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
3256 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3258 /* The protocol tree will be "visible", i.e., printed, only if we're
3259 printing packet details, which is true if we're printing stuff
3260 ("print_packet_info" is true) and we're in verbose mode
3261 ("packet_details" is true). */
3262 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3266 * Force synchronous resolution of IP addresses; in this pass, we
3267 * can't do it in the background and fix up past dissections.
3269 set_resolution_synchrony(TRUE);
3271 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3272 fdata = frame_data_sequence_find(cf->provider.frames, framenum);
3273 if (wtap_seek_read(cf->provider.wth, fdata->file_off, &rec, &buf, &err,
3275 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3276 if (process_packet_second_pass(cf, edt, fdata, &rec, &buf,
3278 /* Either there's no read filtering or this packet passed the
3279 filter, so, if we're writing to a capture file, write
3282 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3283 if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3284 /* Error writing to a capture file */
3285 tshark_debug("tshark: error writing to a capture file (%d)", err);
3287 /* Report the error.
3288 XXX - framenum is not necessarily the frame number in
3289 the input file if there was a read filter. */
3290 cfile_write_failure_message("TShark", cf->filename, save_file,
3291 err, err_info, framenum,
3293 wtap_dump_close(pdh, &err);
3294 wtap_dump_params_cleanup(¶ms);
3303 epan_dissect_free(edt);
3307 ws_buffer_free(&buf);
3309 tshark_debug("tshark: done with second pass");
3312 /* !perform_two_pass_analysis */
3314 gboolean create_proto_tree = FALSE;
3315 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3317 if (do_dissection) {
3319 * Determine whether we need to create a protocol tree.
3322 * we're going to apply a read filter;
3324 * we're going to apply a display filter;
3326 * we're going to print the protocol tree;
3328 * one of the tap listeners is going to apply a filter;
3330 * one of the tap listeners requires a protocol tree;
3332 * a postdissector wants field values or protocols
3333 * on the first pass;
3335 * we have custom columns (which require field values, which
3336 * currently requires that we build a protocol tree).
3339 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3340 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
3341 have_custom_cols(&cf->cinfo) || dissect_color);
3343 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3345 /* The protocol tree will be "visible", i.e., printed, only if we're
3346 printing packet details, which is true if we're printing stuff
3347 ("print_packet_info" is true) and we're in verbose mode
3348 ("packet_details" is true). */
3349 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3353 * Force synchronous resolution of IP addresses; we're doing only
3354 * one pass, so we can't do it in the background and fix up past
3357 set_resolution_synchrony(TRUE);
3359 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3362 tshark_debug("tshark: processing packet #%d", framenum);
3364 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
3366 if (process_packet_single_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3367 wtap_get_buf_ptr(cf->provider.wth), tap_flags)) {
3368 /* Either there's no read filtering or this packet passed the
3369 filter, so, if we're writing to a capture file, write
3372 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3373 if (!wtap_dump(pdh, wtap_get_rec(cf->provider.wth), wtap_get_buf_ptr(cf->provider.wth), &err, &err_info)) {
3374 /* Error writing to a capture file */
3375 tshark_debug("tshark: error writing to a capture file (%d)", err);
3376 cfile_write_failure_message("TShark", cf->filename, save_file,
3377 err, err_info, framenum, out_file_type);
3378 wtap_dump_close(pdh, &err);
3379 wtap_dump_params_cleanup(¶ms);
3384 /* Stop reading if we have the maximum number of packets;
3385 * When the -c option has not been used, max_packet_count
3386 * starts at 0, which practically means, never stop reading.
3387 * (unless we roll over max_packet_count ?)
3389 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3390 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3391 max_packet_count, data_offset, max_byte_count);
3392 err = 0; /* This is not an error */
3398 epan_dissect_free(edt);
3403 wtap_rec_cleanup(&rec);
3405 if (err != 0 || err_pass1 != 0) {
3406 tshark_debug("tshark: something failed along the line (%d)", err);
3408 * Print a message noting that the read failed somewhere along the line.
3410 * If we're printing packet data, and the standard output and error are
3411 * going to the same place, flush the standard output, so everything
3412 * buffered up is written, and then print a newline to the standard error
3413 * before printing the error message, to separate it from the packet
3414 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3415 * the _fstat() documentation at Microsoft doesn't indicate whether
3416 * st_ino is even supported.)
3419 if (print_packet_info) {
3420 ws_statb64 stat_stdout, stat_stderr;
3422 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3423 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3424 stat_stdout.st_ino == stat_stderr.st_ino) {
3426 fprintf(stderr, "\n");
3431 if (err_pass1 != 0) {
3432 /* Error on pass 1 of two-pass processing. */
3433 cfile_read_failure_message("TShark", cf->filename, err_pass1,
3437 /* Error on pass 2 of two-pass processing or on the only pass of
3438 one-pass processing. */
3439 cfile_read_failure_message("TShark", cf->filename, err, err_info);
3443 if (save_file != NULL) {
3444 if (pdh && out_file_name_res) {
3445 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3446 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3447 wtap_file_type_subtype_short_string(out_file_type));
3450 /* Now close the capture file. */
3451 if (!wtap_dump_close(pdh, &err)) {
3452 cfile_close_failure_message(save_file, err);
3456 if (print_packet_info) {
3457 if (!write_finale()) {
3458 show_print_file_io_error(errno);
3465 wtap_close(cf->provider.wth);
3466 cf->provider.wth = NULL;
3468 wtap_dump_params_cleanup(¶ms);
3474 process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
3475 wtap_rec *rec, const guchar *pd,
3482 /* Count this packet. */
3485 /* If we're not running a display filter and we're not printing any
3486 packet information, we don't need to do a dissection. This means
3487 that all packets can be marked as 'passed'. */
3490 frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
3492 /* If we're going to print packet information, or we're going to
3493 run a read filter, or we're going to process taps, set up to
3494 do a dissection and do so. (This is the one and only pass
3495 over the packets, so, if we'll be printing packet information
3496 or running taps, we'll be doing it here.) */
3498 /* If we're running a filter, prime the epan_dissect_t with that
3501 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3503 /* This is the first and only pass, so prime the epan_dissect_t
3504 with the hfids postdissectors want on the first pass. */
3505 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
3507 col_custom_prime_edt(edt, &cf->cinfo);
3509 /* We only need the columns if either
3510 1) some tap needs the columns
3512 2) we're printing packet info but we're *not* verbose; in verbose
3513 mode, we print the protocol tree, not the protocol summary.
3515 3) there is a column mapped as an individual field */
3516 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3521 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3522 &cf->provider.ref, cf->provider.prev_dis);
3523 if (cf->provider.ref == &fdata) {
3525 cf->provider.ref = &ref_frame;
3528 if (dissect_color) {
3529 color_filters_prime_edt(edt);
3530 fdata.flags.need_colorize = 1;
3533 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3534 frame_tvbuff_new(&cf->provider, &fdata, pd),
3537 /* Run the filter if we have it. */
3539 passed = dfilter_apply_edt(cf->dfcode, edt);
3543 frame_data_set_after_dissect(&fdata, &cum_bytes);
3545 /* Process this packet. */
3546 if (print_packet_info) {
3547 /* We're printing packet information; print the information for
3550 print_packet(cf, edt);
3552 /* If we're doing "line-buffering", flush the standard output
3553 after every packet. See the comment above, for the "-l"
3554 option, for an explanation of why we do that. */
3558 if (ferror(stdout)) {
3559 show_print_file_io_error(errno);
3564 /* this must be set after print_packet() [bug #8160] */
3565 prev_dis_frame = fdata;
3566 cf->provider.prev_dis = &prev_dis_frame;
3569 prev_cap_frame = fdata;
3570 cf->provider.prev_cap = &prev_cap_frame;
3573 epan_dissect_reset(edt);
3574 frame_data_destroy(&fdata);
3580 write_preamble(capture_file *cf)
3582 switch (output_action) {
3585 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3589 write_pdml_preamble(stdout, cf->filename);
3591 write_psml_preamble(&cf->cinfo, stdout);
3592 return !ferror(stdout);
3595 write_fields_preamble(output_fields, stdout);
3596 return !ferror(stdout);
3599 case WRITE_JSON_RAW:
3600 write_json_preamble(stdout);
3601 return !ferror(stdout);
3604 return !ferror(stdout);
3607 g_assert_not_reached();
3613 get_line_buf(size_t len)
3615 static char *line_bufp = NULL;
3616 static size_t line_buf_len = 256;
3617 size_t new_line_buf_len;
3619 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3620 new_line_buf_len *= 2)
3622 if (line_bufp == NULL) {
3623 line_buf_len = new_line_buf_len;
3624 line_bufp = (char *)g_malloc(line_buf_len + 1);
3626 if (new_line_buf_len > line_buf_len) {
3627 line_buf_len = new_line_buf_len;
3628 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3635 put_string(char *dest, const char *str, size_t str_len)
3637 memcpy(dest, str, str_len);
3638 dest[str_len] = '\0';
3642 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3646 for (i = str_len; i < str_with_spaces; i++)
3649 put_string(dest, str, str_len);
3653 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3657 memcpy(dest, str, str_len);
3658 for (i = str_len; i < str_with_spaces; i++)
3661 dest[str_with_spaces] = '\0';
3665 print_columns(capture_file *cf, const epan_dissect_t *edt)
3672 col_item_t* col_item;
3673 gchar str_format[11];
3674 const color_filter_t *color_filter = NULL;
3676 line_bufp = get_line_buf(256);
3681 color_filter = edt->pi.fd->color_filter;
3683 for (i = 0; i < cf->cinfo.num_cols; i++) {
3684 col_item = &cf->cinfo.columns[i];
3685 /* Skip columns not marked as visible. */
3686 if (!get_column_visible(i))
3688 switch (col_item->col_fmt) {
3690 column_len = col_len = strlen(col_item->col_data);
3693 line_bufp = get_line_buf(buf_offset + column_len);
3694 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3700 case COL_ABS_YMD_TIME: /* XXX - wider */
3701 case COL_ABS_YDOY_TIME: /* XXX - wider */
3703 case COL_UTC_YMD_TIME: /* XXX - wider */
3704 case COL_UTC_YDOY_TIME: /* XXX - wider */
3705 column_len = col_len = strlen(col_item->col_data);
3706 if (column_len < 10)
3708 line_bufp = get_line_buf(buf_offset + column_len);
3709 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3715 case COL_DEF_DL_SRC:
3716 case COL_RES_DL_SRC:
3717 case COL_UNRES_DL_SRC:
3718 case COL_DEF_NET_SRC:
3719 case COL_RES_NET_SRC:
3720 case COL_UNRES_NET_SRC:
3721 column_len = col_len = strlen(col_item->col_data);
3722 if (column_len < 12)
3724 line_bufp = get_line_buf(buf_offset + column_len);
3725 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3731 case COL_DEF_DL_DST:
3732 case COL_RES_DL_DST:
3733 case COL_UNRES_DL_DST:
3734 case COL_DEF_NET_DST:
3735 case COL_RES_NET_DST:
3736 case COL_UNRES_NET_DST:
3737 column_len = col_len = strlen(col_item->col_data);
3738 if (column_len < 12)
3740 line_bufp = get_line_buf(buf_offset + column_len);
3741 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3745 column_len = strlen(col_item->col_data);
3746 line_bufp = get_line_buf(buf_offset + column_len);
3747 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3750 buf_offset += column_len;
3751 if (i != cf->cinfo.num_cols - 1) {
3753 * This isn't the last column, so we need to print a
3754 * separator between this column and the next.
3756 * If we printed a network source and are printing a
3757 * network destination of the same type next, separate
3758 * them with a UTF-8 right arrow; if we printed a network
3759 * destination and are printing a network source of the same
3760 * type next, separate them with a UTF-8 left arrow;
3761 * otherwise separate them with a space.
3763 * We add enough space to the buffer for " \xe2\x86\x90 "
3764 * or " \xe2\x86\x92 ", even if we're only adding " ".
3766 line_bufp = get_line_buf(buf_offset + 5);
3767 switch (col_item->col_fmt) {
3772 switch (cf->cinfo.columns[i+1].col_fmt) {
3777 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3778 put_string(line_bufp + buf_offset, str_format, 5);
3783 put_string(line_bufp + buf_offset, delimiter_char, 1);
3789 case COL_DEF_DL_SRC:
3790 case COL_RES_DL_SRC:
3791 case COL_UNRES_DL_SRC:
3792 switch (cf->cinfo.columns[i+1].col_fmt) {
3794 case COL_DEF_DL_DST:
3795 case COL_RES_DL_DST:
3796 case COL_UNRES_DL_DST:
3797 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3798 put_string(line_bufp + buf_offset, str_format, 5);
3803 put_string(line_bufp + buf_offset, delimiter_char, 1);
3809 case COL_DEF_NET_SRC:
3810 case COL_RES_NET_SRC:
3811 case COL_UNRES_NET_SRC:
3812 switch (cf->cinfo.columns[i+1].col_fmt) {
3814 case COL_DEF_NET_DST:
3815 case COL_RES_NET_DST:
3816 case COL_UNRES_NET_DST:
3817 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3818 put_string(line_bufp + buf_offset, str_format, 5);
3823 put_string(line_bufp + buf_offset, delimiter_char, 1);
3832 switch (cf->cinfo.columns[i+1].col_fmt) {
3837 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3838 put_string(line_bufp + buf_offset, str_format, 5);
3843 put_string(line_bufp + buf_offset, delimiter_char, 1);
3849 case COL_DEF_DL_DST:
3850 case COL_RES_DL_DST:
3851 case COL_UNRES_DL_DST:
3852 switch (cf->cinfo.columns[i+1].col_fmt) {
3854 case COL_DEF_DL_SRC:
3855 case COL_RES_DL_SRC:
3856 case COL_UNRES_DL_SRC:
3857 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3858 put_string(line_bufp + buf_offset, str_format, 5);
3863 put_string(line_bufp + buf_offset, delimiter_char, 1);
3869 case COL_DEF_NET_DST:
3870 case COL_RES_NET_DST:
3871 case COL_UNRES_NET_DST:
3872 switch (cf->cinfo.columns[i+1].col_fmt) {
3874 case COL_DEF_NET_SRC:
3875 case COL_RES_NET_SRC:
3876 case COL_UNRES_NET_SRC:
3877 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3878 put_string(line_bufp + buf_offset, str_format, 5);
3883 put_string(line_bufp + buf_offset, delimiter_char, 1);
3890 put_string(line_bufp + buf_offset, delimiter_char, 1);
3897 if (dissect_color && color_filter != NULL)
3898 return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
3900 return print_line(print_stream, 0, line_bufp);
3904 print_packet(capture_file *cf, epan_dissect_t *edt)
3906 if (print_summary || output_fields_has_cols(output_fields))
3907 /* Just fill in the columns. */
3908 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3910 /* Print summary columns and/or protocol tree */
3911 switch (output_action) {
3914 if (print_summary && !print_columns(cf, edt))
3916 if (print_details) {
3917 if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
3918 print_hex, edt, output_only_tables, print_stream))
3921 if (!print_line(print_stream, 0, separator))
3928 if (print_summary) {
3929 write_psml_columns(edt, stdout, dissect_color);
3930 return !ferror(stdout);
3932 if (print_details) {
3933 write_pdml_proto_tree(output_fields, protocolfilter, protocolfilter_flags, edt, &cf->cinfo, stdout, dissect_color);
3935 return !ferror(stdout);
3940 if (print_summary) {
3941 /*No non-verbose "fields" format */
3942 g_assert_not_reached();
3944 if (print_details) {
3945 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3947 return !ferror(stdout);
3953 g_assert_not_reached();
3954 if (print_details) {
3955 write_json_proto_tree(output_fields, print_dissections_expanded,
3956 print_hex, protocolfilter, protocolfilter_flags,
3957 edt, &cf->cinfo, node_children_grouper, stdout);
3958 return !ferror(stdout);
3962 case WRITE_JSON_RAW:
3964 g_assert_not_reached();
3965 if (print_details) {
3966 write_json_proto_tree(output_fields, print_dissections_none, TRUE,
3967 protocolfilter, protocolfilter_flags,
3968 edt, &cf->cinfo, node_children_grouper, stdout);
3969 return !ferror(stdout);
3974 write_ek_proto_tree(output_fields, print_summary, print_hex, protocolfilter,
3975 protocolfilter_flags, edt, &cf->cinfo, stdout);
3976 return !ferror(stdout);
3980 if (print_summary || print_details) {
3981 if (!print_line(print_stream, 0, ""))
3984 if (!print_hex_data(print_stream, edt))
3986 if (!print_line(print_stream, 0, separator))
3995 switch (output_action) {
3998 return print_finale(print_stream);
4002 write_pdml_finale(stdout);
4004 write_psml_finale(stdout);
4005 return !ferror(stdout);
4008 write_fields_finale(output_fields, stdout);
4009 return !ferror(stdout);
4012 case WRITE_JSON_RAW:
4013 write_json_finale(stdout);
4014 return !ferror(stdout);
4017 return !ferror(stdout);
4020 g_assert_not_reached();
4026 cf_close(capture_file *cf)
4028 g_free(cf->filename);
4032 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4037 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4041 /* The open succeeded. Fill in the information for this file. */
4043 cf->provider.wth = wth;
4044 cf->f_datalen = 0; /* not used, but set it anyway */
4046 /* Set the file name because we need it to set the follow stream filter.
4047 XXX - is that still true? We need it for other reasons, though,
4049 cf->filename = g_strdup(fname);
4051 /* Indicate whether it's a permanent or temporary file. */
4052 cf->is_tempfile = is_tempfile;
4054 /* No user changes yet. */
4055 cf->unsaved_changes = FALSE;
4057 cf->cd_t = wtap_file_type_subtype(cf->provider.wth);
4058 cf->open_type = type;
4060 cf->drops_known = FALSE;
4062 cf->snap = wtap_snapshot_length(cf->provider.wth);
4063 nstime_set_zero(&cf->elapsed_time);
4064 cf->provider.ref = NULL;
4065 cf->provider.prev_dis = NULL;
4066 cf->provider.prev_cap = NULL;
4068 /* Create new epan session for dissection. */
4069 epan_free(cf->epan);
4070 cf->epan = tshark_epan_new(cf);
4072 wtap_set_cb_new_ipv4(cf->provider.wth, add_ipv4_name);
4073 wtap_set_cb_new_ipv6(cf->provider.wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4078 cfile_open_failure_message("TShark", fname, *err, err_info);
4083 show_print_file_io_error(int err)
4088 cmdarg_err("Not all the packets could be printed because there is "
4089 "no space left on the file system.");
4094 cmdarg_err("Not all the packets could be printed because you are "
4095 "too close to, or over your disk quota.");
4100 cmdarg_err("An error occurred while printing packets: %s.",
4107 * General errors and warnings are reported with an console message
4111 failure_warning_message(const char *msg_format, va_list ap)
4113 fprintf(stderr, "tshark: ");
4114 vfprintf(stderr, msg_format, ap);
4115 fprintf(stderr, "\n");
4119 * Open/create errors are reported with an console message in TShark.
4122 open_failure_message(const char *filename, int err, gboolean for_writing)
4124 fprintf(stderr, "tshark: ");
4125 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4126 fprintf(stderr, "\n");
4130 * Read errors are reported with an console message in TShark.
4133 read_failure_message(const char *filename, int err)
4135 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4136 filename, g_strerror(err));
4140 * Write errors are reported with an console message in TShark.
4143 write_failure_message(const char *filename, int err)
4145 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4146 filename, g_strerror(err));
4149 static void reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
4151 if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
4154 fprintf(stderr, "resetting session.\n");
4156 epan_dissect_cleanup(edt);
4157 epan_free(cf->epan);
4159 cf->epan = tshark_epan_new(cf);
4160 epan_dissect_init(edt, cf->epan, tree, visual);
4165 * Report additional information for an error in command-line arguments.
4168 failure_message_cont(const char *msg_format, va_list ap)
4170 vfprintf(stderr, msg_format, ap);
4171 fprintf(stderr, "\n");
4175 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4180 * indent-tabs-mode: nil
4183 * vi: set shiftwidth=2 tabstop=8 expandtab:
4184 * :indentSize=2:tabSize=8:noTabs=true: