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): \"mnNtCd\"\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 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 arg_list_utf_16to8(argc, argv);
768 create_app_running_mutex();
772 * Get credential information for later use, and drop privileges
773 * before doing anything else.
774 * Let the user know if anything happened.
776 init_process_policies();
777 relinquish_special_privs_perm();
778 print_current_user();
781 * Attempt to get the pathname of the directory containing the
784 init_progfile_dir_error = init_progfile_dir(argv[0]);
785 if (init_progfile_dir_error != NULL) {
787 "tshark: Can't get pathname of directory containing the tshark program: %s.\n"
788 "It won't be possible to capture traffic.\n"
789 "Report this to the Wireshark developers.",
790 init_progfile_dir_error);
791 g_free(init_progfile_dir_error);
794 initialize_funnel_ops();
797 ws_init_dll_search_path();
799 /* Load wpcap if possible. Do this before collecting the run-time version information */
801 #endif /* HAVE_LIBPCAP */
804 /* Get the compile-time version information string */
805 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
806 epan_get_compiled_version_info);
808 /* Get the run-time version information string */
809 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
811 /* Add it to the information to be reported on a crash. */
812 ws_add_crash_info("TShark (Wireshark) %s\n"
817 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
818 g_string_free(comp_info_str, TRUE);
819 g_string_free(runtime_info_str, TRUE);
821 /* Fail sometimes. Useful for testing fuzz scripts. */
822 /* if (g_random_int_range(0, 100) < 5) abort(); */
825 * In order to have the -X opts assigned before the wslua machine starts
826 * we need to call getopt_long before epan_init() gets called.
828 * In order to handle, for example, -o options, we also need to call it
829 * *after* epan_init() gets called, so that the dissectors have had a
830 * chance to register their preferences.
832 * XXX - can we do this all with one getopt_long() call, saving the
833 * arguments we can't handle until after initializing libwireshark,
834 * and then process them after initializing libwireshark?
838 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
840 case 'C': /* Configuration Profile */
841 if (profile_exists (optarg, FALSE)) {
842 set_profile_name (optarg);
844 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
845 exit_status = INVALID_OPTION;
849 case 'P': /* Print packet summary info even when writing to a file */
850 print_packet_info = TRUE;
851 print_summary = TRUE;
853 case 'O': /* Only output these protocols */
854 output_only = g_strdup(optarg);
856 case 'V': /* Verbose */
857 print_details = TRUE;
858 print_packet_info = TRUE;
860 case 'x': /* Print packet data in hex (and ASCII) */
862 /* The user asked for hex output, so let's ensure they get it,
863 * even if they're writing to a file.
865 print_packet_info = TRUE;
871 case LONGOPT_ELASTIC_MAPPING_FILTER:
872 elastic_mapping_filter = optarg;
880 /** Send All g_log messages to our own handler **/
884 G_LOG_LEVEL_CRITICAL|
889 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
891 g_log_set_handler(NULL,
892 (GLogLevelFlags)log_flags,
893 tshark_log_handler, NULL /* user_data */);
894 g_log_set_handler(LOG_DOMAIN_MAIN,
895 (GLogLevelFlags)log_flags,
896 tshark_log_handler, NULL /* user_data */);
899 g_log_set_handler(LOG_DOMAIN_CAPTURE,
900 (GLogLevelFlags)log_flags,
901 tshark_log_handler, NULL /* user_data */);
902 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
903 (GLogLevelFlags)log_flags,
904 tshark_log_handler, NULL /* user_data */);
907 init_report_message(failure_warning_message, failure_warning_message,
908 open_failure_message, read_failure_message,
909 write_failure_message);
912 capture_opts_init(&global_capture_opts);
913 capture_session_init(&global_capture_session, &cfile);
916 timestamp_set_type(TS_RELATIVE);
917 timestamp_set_precision(TS_PREC_AUTO);
918 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
922 /* Register all dissectors; we must do this before checking for the
923 "-G" flag, as the "-G" flag dumps information registered by the
924 dissectors, and we must do it before we read the preferences, in
925 case any dissectors register preferences. */
926 if (!epan_init(NULL, NULL, TRUE)) {
927 exit_status = INIT_FAILED;
931 /* Register all tap listeners; we do this before we parse the arguments,
932 as the "-z" argument can specify a registered tap. */
934 /* we register the plugin taps before the other taps because
935 stats_tree taps plugins will be registered as tap listeners
936 by stats_tree_stat.c and need to registered before that */
938 register_all_plugin_tap_listeners();
940 extcap_register_preferences();
941 /* Register all tap listeners. */
942 for (tap_reg_t *t = tap_reg_listener; t->cb_func != NULL; t++) {
945 conversation_table_set_gui_info(init_iousers);
946 hostlist_table_set_gui_info(init_hostlists);
947 srt_table_iterate_tables(register_srt_tables, NULL);
948 rtd_table_iterate_tables(register_rtd_tables, NULL);
949 stat_tap_iterate_tables(register_simple_stat_tables, NULL);
951 /* If invoked with the "-G" flag, we dump out information based on
952 the argument to the "-G" flag; if no argument is specified,
953 for backwards compatibility we dump out a glossary of display
956 XXX - we do this here, for now, to support "-G" with no arguments.
957 If none of our build or other processes uses "-G" with no arguments,
958 we can just process it with the other arguments. */
959 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
960 proto_initialize_all_prefixes();
963 proto_registrar_dump_fields();
965 if (strcmp(argv[2], "column-formats") == 0)
966 column_dump_column_formats();
967 else if (strcmp(argv[2], "currentprefs") == 0) {
968 epan_load_settings();
971 else if (strcmp(argv[2], "decodes") == 0)
972 dissector_dump_decodes();
973 else if (strcmp(argv[2], "defaultprefs") == 0)
975 else if (strcmp(argv[2], "dissector-tables") == 0)
976 dissector_dump_dissector_tables();
978 else if (strcmp(argv[2], "elastic-mapping") == 0)
979 proto_registrar_dump_elastic(elastic_mapping_filter);
981 else if (strcmp(argv[2], "fieldcount") == 0) {
982 /* return value for the test suite */
983 exit_status = proto_registrar_dump_fieldcount();
985 } else if (strcmp(argv[2], "fields") == 0)
986 proto_registrar_dump_fields();
987 else if (strcmp(argv[2], "folders") == 0) {
988 epan_load_settings();
990 } else if (strcmp(argv[2], "ftypes") == 0)
991 proto_registrar_dump_ftypes();
992 else if (strcmp(argv[2], "heuristic-decodes") == 0)
993 dissector_dump_heur_decodes();
994 else if (strcmp(argv[2], "plugins") == 0) {
999 wslua_plugins_dump_all();
1002 else if (strcmp(argv[2], "protocols") == 0)
1003 proto_registrar_dump_protocols();
1004 else if (strcmp(argv[2], "values") == 0)
1005 proto_registrar_dump_values();
1006 else if (strcmp(argv[2], "help") == 0)
1007 glossary_option_help();
1008 /* These are supported only for backwards compatibility and may or may not work
1009 * for a given user in a given directory on a given operating system with a given
1010 * command-line interpreter.
1012 else if (strcmp(argv[2], "?") == 0)
1013 glossary_option_help();
1014 else if (strcmp(argv[2], "-?") == 0)
1015 glossary_option_help();
1017 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G help for more help.", argv[2]);
1018 exit_status = INVALID_OPTION;
1022 exit_status = EXIT_SUCCESS;
1026 tshark_debug("tshark reading settings");
1028 /* Load libwireshark settings from the current profile. */
1029 prefs_p = epan_load_settings();
1030 prefs_loaded = TRUE;
1032 read_filter_list(CFILTER_LIST);
1034 cap_file_init(&cfile);
1036 /* Print format defaults to this. */
1037 print_format = PR_FMT_TEXT;
1038 delimiter_char = " ";
1040 output_fields = output_fields_new();
1043 * To reset the options parser, set optreset to 1 on platforms that
1044 * have optreset (documented in *BSD and macOS, apparently present but
1045 * not documented in Solaris - the Illumos repository seems to
1046 * suggest that the first Solaris getopt_long(), at least as of 2004,
1047 * was based on the NetBSD one, it had optreset) and set optind to 1,
1048 * and set optind to 0 otherwise (documented as working in the GNU
1049 * getopt_long(). Setting optind to 0 didn't originally work in the
1050 * NetBSD one, but that was added later - we don't want to depend on
1051 * it if we have optreset).
1053 * Also reset opterr to 1, so that error messages are printed by
1056 #ifdef HAVE_OPTRESET
1064 /* Now get our args */
1065 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1067 case '2': /* Perform two pass analysis */
1068 if(epan_auto_reset){
1069 cmdarg_err("-2 does not support auto session reset.");
1072 perform_two_pass_analysis = TRUE;
1075 if(perform_two_pass_analysis){
1076 cmdarg_err("-M does not support two pass analysis.");
1079 epan_auto_reset_count = get_positive_int(optarg, "epan reset count");
1080 epan_auto_reset = TRUE;
1082 case 'a': /* autostop criteria */
1083 case 'b': /* Ringbuffer option */
1084 case 'c': /* Capture x packets */
1085 case 'f': /* capture filter */
1086 case 'g': /* enable group read access on file(s) */
1087 case 'i': /* Use interface x */
1088 case LONGOPT_SET_TSTAMP_TYPE: /* Set capture timestamp type */
1089 case 'p': /* Don't capture in promiscuous mode */
1090 #ifdef HAVE_PCAP_REMOTE
1091 case 'A': /* Authentication */
1093 #ifdef HAVE_PCAP_CREATE
1094 case 'I': /* Capture in monitor mode, if available */
1096 case 's': /* Set the snapshot (capture) length */
1097 case 'w': /* Write to capture file x */
1098 case 'y': /* Set the pcap data link type */
1099 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1100 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1101 case 'B': /* Buffer size */
1104 exit_status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1105 if (exit_status != 0) {
1111 * Output file name, if we're reading a file and writing to another
1114 output_file_name = g_strdup(optarg);
1116 capture_option_specified = TRUE;
1122 /* already processed; just ignore it now */
1124 case 'D': /* Print a list of capture devices and exit */
1126 if_list = capture_interface_list(&err, &err_str,NULL);
1127 if (if_list == NULL) {
1129 cmdarg_err("There are no interfaces on which a capture can be done");
1131 cmdarg_err("%s", err_str);
1134 exit_status = INVALID_INTERFACE;
1137 capture_opts_print_interfaces(if_list);
1138 free_interface_list(if_list);
1139 exit_status = EXIT_SUCCESS;
1142 capture_option_specified = TRUE;
1148 output_fields_add(output_fields, optarg);
1152 if (!output_fields_set_option(output_fields, optarg)) {
1153 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1154 output_fields_list_options(stderr);
1155 exit_status = INVALID_OPTION;
1160 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1161 if (out_file_type < 0) {
1162 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1163 list_capture_types();
1164 exit_status = INVALID_OPTION;
1169 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1172 protocolfilter_flags = PF_INCLUDE_CHILDREN;
1173 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1175 case 'W': /* Select extra information to save in our capture file */
1176 /* This is patterned after the -N flag which may not be the best idea. */
1177 if (strchr(optarg, 'n')) {
1178 out_file_name_res = TRUE;
1180 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1181 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1182 exit_status = INVALID_OPTION;
1186 case 'H': /* Read address to name mappings from a hosts file */
1187 if (! add_hosts_file(optarg))
1189 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1190 exit_status = INVALID_OPTION;
1193 out_file_name_res = TRUE;
1196 case 'h': /* Print help and exit */
1197 printf("TShark (Wireshark) %s\n"
1198 "Dump and analyze network traffic.\n"
1199 "See https://www.wireshark.org for more information.\n",
1200 get_ws_vcs_version_info());
1201 print_usage(stdout);
1202 exit_status = EXIT_SUCCESS;
1205 case 'l': /* "Line-buffer" standard output */
1206 /* The ANSI C standard does not appear to *require* that a line-buffered
1207 stream be flushed to the host environment whenever a newline is
1208 written, it just says that, on such a stream, characters "are
1209 intended to be transmitted to or from the host environment as a
1210 block when a new-line character is encountered".
1212 The Visual C++ 6.0 C implementation doesn't do what is intended;
1213 even if you set a stream to be line-buffered, it still doesn't
1214 flush the buffer at the end of every line.
1216 The whole reason for the "-l" flag in either tcpdump or TShark
1217 is to allow the output of a live capture to be piped to a program
1218 or script and to have that script see the information for the
1219 packet as soon as it's printed, rather than having to wait until
1220 a standard I/O buffer fills up.
1222 So, if the "-l" flag is specified, we flush the standard output
1223 at the end of a packet. This will do the right thing if we're
1224 printing packet summary lines, and, as we print the entire protocol
1225 tree for a single packet without waiting for anything to happen,
1226 it should be as good as line-buffered mode if we're printing
1227 protocol trees - arguably even better, as it may do fewer
1229 line_buffered = TRUE;
1231 case 'L': /* Print list of link-layer types and exit */
1233 caps_queries |= CAPS_QUERY_LINK_TYPES;
1235 capture_option_specified = TRUE;
1239 case LONGOPT_LIST_TSTAMP_TYPES: /* List possible timestamp types */
1241 caps_queries |= CAPS_QUERY_TIMESTAMP_TYPES;
1243 capture_option_specified = TRUE;
1247 case 'o': /* Override preference from command line */
1249 char *errmsg = NULL;
1251 switch (prefs_set_pref(optarg, &errmsg)) {
1256 case PREFS_SET_SYNTAX_ERR:
1257 cmdarg_err("Invalid -o flag \"%s\"%s%s", optarg,
1258 errmsg ? ": " : "", errmsg ? errmsg : "");
1260 exit_status = INVALID_OPTION;
1264 case PREFS_SET_NO_SUCH_PREF:
1265 case PREFS_SET_OBSOLETE:
1266 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1267 exit_status = INVALID_OPTION;
1273 case 'q': /* Quiet */
1276 case 'Q': /* Really quiet */
1278 really_quiet = TRUE;
1280 case 'r': /* Read capture file x */
1281 cf_name = g_strdup(optarg);
1283 case 'R': /* Read file filter */
1287 /* already processed; just ignore it now */
1289 case 'S': /* Set the line Separator to be printed between packets */
1292 case 'T': /* printing Type */
1293 print_packet_info = TRUE;
1294 if (strcmp(optarg, "text") == 0) {
1295 output_action = WRITE_TEXT;
1296 print_format = PR_FMT_TEXT;
1297 } else if (strcmp(optarg, "tabs") == 0) {
1298 output_action = WRITE_TEXT;
1299 print_format = PR_FMT_TEXT;
1300 delimiter_char = "\t";
1301 } else if (strcmp(optarg, "ps") == 0) {
1302 output_action = WRITE_TEXT;
1303 print_format = PR_FMT_PS;
1304 } else if (strcmp(optarg, "pdml") == 0) {
1305 output_action = WRITE_XML;
1306 print_details = TRUE; /* Need details */
1307 print_summary = FALSE; /* Don't allow summary */
1308 } else if (strcmp(optarg, "psml") == 0) {
1309 output_action = WRITE_XML;
1310 print_details = FALSE; /* Don't allow details */
1311 print_summary = TRUE; /* Need summary */
1312 } else if (strcmp(optarg, "fields") == 0) {
1313 output_action = WRITE_FIELDS;
1314 print_details = TRUE; /* Need full tree info */
1315 print_summary = FALSE; /* Don't allow summary */
1316 } else if (strcmp(optarg, "json") == 0) {
1317 output_action = WRITE_JSON;
1318 print_details = TRUE; /* Need details */
1319 print_summary = FALSE; /* Don't allow summary */
1320 } else if (strcmp(optarg, "ek") == 0) {
1321 output_action = WRITE_EK;
1323 print_details = TRUE;
1324 } else if (strcmp(optarg, "jsonraw") == 0) {
1325 output_action = WRITE_JSON_RAW;
1326 print_details = TRUE; /* Need details */
1327 print_summary = FALSE; /* Don't allow summary */
1330 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1331 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1332 "\t specified by the -E option.\n"
1333 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1334 "\t details of a decoded packet. This information is equivalent to\n"
1335 "\t the packet details printed with the -V flag.\n"
1336 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1337 "\t the packets, or a multi-line view of the details of each of\n"
1338 "\t the packets, depending on whether the -V flag was specified.\n"
1339 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1340 "\t summary information of a decoded packet. This information is\n"
1341 "\t equivalent to the information shown in the one-line summary\n"
1342 "\t printed by default.\n"
1343 "\t\"json\" Packet Summary, an JSON-based format for the details\n"
1344 "\t summary information of a decoded packet. This information is \n"
1345 "\t equivalent to the packet details printed with the -V flag.\n"
1346 "\t\"jsonraw\" Packet Details, a JSON-based format for machine parsing\n"
1347 "\t including only raw hex decoded fields (same as -T json -x but\n"
1348 "\t without text decoding, only raw fields included). \n"
1349 "\t\"ek\" Packet Details, an EK JSON-based format for the bulk insert \n"
1350 "\t into elastic search cluster. This information is \n"
1351 "\t equivalent to the packet details printed with the -V flag.\n"
1352 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1353 "\t packets, or a multi-line view of the details of each of the\n"
1354 "\t packets, depending on whether the -V flag was specified.\n"
1355 "\t This is the default.\n"
1356 "\t\"tabs\" Similar to the text report except that each column of the\n"
1357 "\t human-readable one-line summary is delimited with an ASCII\n"
1358 "\t horizontal tab character.");
1359 exit_status = INVALID_OPTION;
1363 case 'U': /* Export PDUs to file */
1365 GSList *export_pdu_tap_name_list = NULL;
1368 cmdarg_err("A tap name is required. Valid names are:");
1369 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)) {
1370 cmdarg_err("%s\n", (const char*)(export_pdu_tap_name_list->data));
1372 exit_status = INVALID_OPTION;
1375 pdu_export_arg = g_strdup(optarg);
1378 case 'v': /* Show version and exit */
1379 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1380 epan_get_compiled_version_info);
1381 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1382 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1383 g_string_free(comp_info_str, TRUE);
1384 g_string_free(runtime_info_str, TRUE);
1385 /* We don't really have to cleanup here, but it's a convenient way to test
1386 * start-up and shut-down of the epan library without any UI-specific
1387 * cruft getting in the way. Makes the results of running
1388 * $ ./tools/valgrind-wireshark -n
1389 * much more useful. */
1392 exit_status = EXIT_SUCCESS;
1394 case 'O': /* Only output these protocols */
1395 /* already processed; just ignore it now */
1397 case 'V': /* Verbose */
1398 /* already processed; just ignore it now */
1400 case 'x': /* Print packet data in hex (and ASCII) */
1401 /* already processed; just ignore it now */
1404 /* already processed; just ignore it now */
1410 /* We won't call the init function for the stat this soon
1411 as it would disallow MATE's fields (which are registered
1412 by the preferences set callback) from being used as
1413 part of a tap filter. Instead, we just add the argument
1414 to a list of stat arguments. */
1415 if (strcmp("help", optarg) == 0) {
1416 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1417 list_stat_cmd_args();
1418 exit_status = EXIT_SUCCESS;
1421 if (!process_stat_cmd_arg(optarg)) {
1422 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1423 list_stat_cmd_args();
1424 exit_status = INVALID_OPTION;
1428 case 'd': /* Decode as rule */
1429 case 'K': /* Kerberos keytab file */
1430 case 'n': /* No name resolution */
1431 case 'N': /* Select what types of addresses/port #s to resolve */
1432 case 't': /* Time stamp type */
1433 case 'u': /* Seconds type */
1434 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1435 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1436 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1437 case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
1438 if (!dissect_opts_handle_opt(opt, optarg)) {
1439 exit_status = INVALID_OPTION;
1443 case LONGOPT_EXPORT_OBJECTS: /* --export-objects */
1444 if (strcmp("help", optarg) == 0) {
1445 fprintf(stderr, "tshark: The available export object types for the \"--export-objects\" option are:\n");
1446 eo_list_object_types();
1447 exit_status = EXIT_SUCCESS;
1450 if (!eo_tap_opt_add(optarg)) {
1451 exit_status = INVALID_OPTION;
1455 case LONGOPT_COLOR: /* print in color where appropriate */
1456 dissect_color = TRUE;
1458 case LONGOPT_NO_DUPLICATE_KEYS:
1459 no_duplicate_keys = TRUE;
1460 node_children_grouper = proto_node_group_children_by_json_key;
1463 case '?': /* Bad flag - print usage message */
1466 list_capture_types();
1469 print_usage(stderr);
1471 exit_status = INVALID_OPTION;
1478 * Print packet summary information is the default if neither -V or -x
1479 * were specified. Note that this is new behavior, which allows for the
1480 * possibility of printing only hex/ascii output without necessarily
1481 * requiring that either the summary or details be printed too.
1483 if (!print_summary && !print_details && !print_hex)
1484 print_summary = TRUE;
1486 if (no_duplicate_keys && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW) {
1487 cmdarg_err("--no-duplicate-keys can only be used with \"-T json\" and \"-T jsonraw\"");
1488 exit_status = INVALID_OPTION;
1492 /* If we specified output fields, but not the output field type... */
1493 if ((WRITE_FIELDS != output_action && WRITE_XML != output_action && WRITE_JSON != output_action && WRITE_EK != output_action) && 0 != output_fields_num_fields(output_fields)) {
1494 cmdarg_err("Output fields were specified with \"-e\", "
1495 "but \"-Tek, -Tfields, -Tjson or -Tpdml\" was not specified.");
1496 exit_status = INVALID_OPTION;
1498 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1499 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1500 "specified with \"-e\".");
1502 exit_status = INVALID_OPTION;
1506 if (dissect_color) {
1507 if (!color_filters_init(&err_msg, NULL)) {
1508 fprintf(stderr, "%s\n", err_msg);
1513 /* If no capture filter or display filter has been specified, and there are
1514 still command-line arguments, treat them as the tokens of a capture
1515 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1516 flag was specified. */
1517 if (optind < argc) {
1518 if (cf_name != NULL) {
1519 if (dfilter != NULL) {
1520 cmdarg_err("Display filters were specified both with \"-d\" "
1521 "and with additional command-line arguments.");
1522 exit_status = INVALID_OPTION;
1525 dfilter = get_args_as_string(argc, argv, optind);
1530 if (global_capture_opts.default_options.cfilter) {
1531 cmdarg_err("A default capture filter was specified both with \"-f\""
1532 " and with additional command-line arguments.");
1533 exit_status = INVALID_OPTION;
1536 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1537 interface_options *interface_opts;
1538 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
1539 if (interface_opts->cfilter == NULL) {
1540 interface_opts->cfilter = get_args_as_string(argc, argv, optind);
1542 cmdarg_err("A capture filter was specified both with \"-f\""
1543 " and with additional command-line arguments.");
1544 exit_status = INVALID_OPTION;
1548 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1550 capture_option_specified = TRUE;
1556 if (!global_capture_opts.saving_to_file) {
1557 /* We're not saving the capture to a file; if "-q" wasn't specified,
1558 we should print packet information */
1560 print_packet_info = TRUE;
1562 /* We're saving to a file; if we're writing to the standard output.
1563 and we'll also be writing dissected packets to the standard
1564 output, reject the request. At best, we could redirect that
1565 to the standard error; we *can't* write both to the standard
1566 output and have either of them be useful. */
1567 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1568 cmdarg_err("You can't write both raw packet data and dissected packets"
1569 " to the standard output.");
1570 exit_status = INVALID_OPTION;
1575 /* We're not saving the capture to a file; if "-q" wasn't specified,
1576 we should print packet information */
1578 print_packet_info = TRUE;
1581 #ifndef HAVE_LIBPCAP
1582 if (capture_option_specified)
1583 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1586 print_usage(stderr);
1587 exit_status = INVALID_OPTION;
1592 if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
1593 cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
1594 exit_status = INVALID_OPTION;
1599 if (output_only != NULL) {
1602 if (!print_details) {
1603 cmdarg_err("-O requires -V");
1604 exit_status = INVALID_OPTION;
1608 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1609 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1610 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1614 if (rfilter != NULL && !perform_two_pass_analysis) {
1615 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1616 exit_status = INVALID_OPTION;
1622 /* We're supposed to list the link-layer/timestamp types for an interface;
1623 did the user also specify a capture file to be read? */
1625 /* Yes - that's bogus. */
1626 cmdarg_err("You can't specify %s and a capture file to be read.",
1627 caps_queries & CAPS_QUERY_LINK_TYPES ? "-L" : "--list-time-stamp-types");
1628 exit_status = INVALID_OPTION;
1631 /* No - did they specify a ring buffer option? */
1632 if (global_capture_opts.multi_files_on) {
1633 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1634 exit_status = INVALID_OPTION;
1640 * "-r" was specified, so we're reading a capture file.
1641 * Capture options don't apply here.
1644 /* We don't support capture filters when reading from a capture file
1645 (the BPF compiler doesn't support all link-layer types that we
1646 support in capture files we read). */
1647 if (global_capture_opts.default_options.cfilter) {
1648 cmdarg_err("Only read filters, not capture filters, "
1649 "can be specified when reading a capture file.");
1650 exit_status = INVALID_OPTION;
1653 if (global_capture_opts.multi_files_on) {
1654 cmdarg_err("Multiple capture files requested, but "
1655 "a capture isn't being done.");
1656 exit_status = INVALID_OPTION;
1659 if (global_capture_opts.has_file_duration) {
1660 cmdarg_err("Switching capture files after a time period was specified, but "
1661 "a capture isn't being done.");
1662 exit_status = INVALID_OPTION;
1665 if (global_capture_opts.has_file_interval) {
1666 cmdarg_err("Switching capture files after a time interval was specified, but "
1667 "a capture isn't being done.");
1668 exit_status = INVALID_OPTION;
1671 if (global_capture_opts.has_ring_num_files) {
1672 cmdarg_err("A ring buffer of capture files was specified, but "
1673 "a capture isn't being done.");
1674 exit_status = INVALID_OPTION;
1677 if (global_capture_opts.has_autostop_files) {
1678 cmdarg_err("A maximum number of capture files was specified, but "
1679 "a capture isn't being done.");
1680 exit_status = INVALID_OPTION;
1683 if (global_capture_opts.capture_comment) {
1684 cmdarg_err("A capture comment was specified, but "
1685 "a capture isn't being done.\nThere's no support for adding "
1686 "a capture comment to an existing capture file.");
1687 exit_status = INVALID_OPTION;
1691 /* Note: TShark now allows the restriction of a _read_ file by packet count
1692 * and byte count as well as a write file. Other autostop options remain valid
1693 * only for a write file.
1695 if (global_capture_opts.has_autostop_duration) {
1696 cmdarg_err("A maximum capture time was specified, but "
1697 "a capture isn't being done.");
1698 exit_status = INVALID_OPTION;
1703 * "-r" wasn't specified, so we're doing a live capture.
1705 if (perform_two_pass_analysis) {
1706 /* Two-pass analysis doesn't work with live capture since it requires us
1707 * to buffer packets until we've read all of them, but a live capture
1708 * has no useful/meaningful definition of "all" */
1709 cmdarg_err("Live captures do not support two-pass analysis.");
1710 exit_status = INVALID_OPTION;
1714 if (global_capture_opts.saving_to_file) {
1715 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1717 /* When capturing, we only support writing pcap or pcapng format. */
1718 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1719 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1720 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1721 exit_status = INVALID_OPTION;
1724 if (global_capture_opts.capture_comment &&
1725 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1726 cmdarg_err("A capture comment can only be written to a pcapng file.");
1727 exit_status = INVALID_OPTION;
1730 if (global_capture_opts.multi_files_on) {
1731 /* Multiple-file mode doesn't work under certain conditions:
1732 a) it doesn't work if you're writing to the standard output;
1733 b) it doesn't work if you're writing to a pipe;
1735 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1736 cmdarg_err("Multiple capture files requested, but "
1737 "the capture is being written to the standard output.");
1738 exit_status = INVALID_OPTION;
1741 if (global_capture_opts.output_to_pipe) {
1742 cmdarg_err("Multiple capture files requested, but "
1743 "the capture file is a pipe.");
1744 exit_status = INVALID_OPTION;
1747 if (!global_capture_opts.has_autostop_filesize &&
1748 !global_capture_opts.has_file_duration &&
1749 !global_capture_opts.has_file_interval) {
1750 cmdarg_err("Multiple capture files requested, but "
1751 "no maximum capture file size, duration or interval was specified.");
1752 exit_status = INVALID_OPTION;
1756 /* Currently, we don't support read or display filters when capturing
1757 and saving the packets. */
1758 if (rfilter != NULL) {
1759 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1760 exit_status = INVALID_OPTION;
1763 if (dfilter != NULL) {
1764 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1765 exit_status = INVALID_OPTION;
1768 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1770 /* They didn't specify a "-w" flag, so we won't be saving to a
1771 capture file. Check for options that only make sense if
1772 we're saving to a file. */
1773 if (global_capture_opts.has_autostop_filesize) {
1774 cmdarg_err("Maximum capture file size specified, but "
1775 "capture isn't being saved to a file.");
1776 exit_status = INVALID_OPTION;
1779 if (global_capture_opts.multi_files_on) {
1780 cmdarg_err("Multiple capture files requested, but "
1781 "the capture isn't being saved to a file.");
1782 exit_status = INVALID_OPTION;
1785 if (global_capture_opts.capture_comment) {
1786 cmdarg_err("A capture comment was specified, but "
1787 "the capture isn't being saved to a file.");
1788 exit_status = INVALID_OPTION;
1797 /* Start windows sockets */
1798 result = WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1801 exit_status = INIT_FAILED;
1806 /* Notify all registered modules that have had any of their preferences
1807 changed either from one of the preferences file or from the command
1808 line that their preferences have changed. */
1811 /* We can also enable specified taps for export object */
1812 start_exportobjects();
1814 /* At this point MATE will have registered its field array so we can
1815 check if the fields specified by the user are all good.
1819 GSList *invalid_fields = output_fields_valid(output_fields);
1820 if (invalid_fields != NULL) {
1822 cmdarg_err("Some fields aren't valid:");
1823 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
1824 cmdarg_err_cont("\t%s", (gchar *)it->data);
1826 g_slist_free(invalid_fields);
1827 exit_status = INVALID_OPTION;
1832 /* We currently don't support taps, or printing dissected packets,
1833 if we're writing to a pipe. */
1834 if (global_capture_opts.saving_to_file &&
1835 global_capture_opts.output_to_pipe) {
1836 if (tap_listeners_require_dissection()) {
1837 cmdarg_err("Taps aren't supported when saving to a pipe.");
1838 exit_status = INVALID_OPTION;
1841 if (print_packet_info) {
1842 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1843 exit_status = INVALID_OPTION;
1849 if (ex_opt_count("read_format") > 0) {
1850 const gchar* name = ex_opt_get_next("read_format");
1851 in_file_type = open_info_name_to_type(name);
1852 if (in_file_type == WTAP_TYPE_AUTO) {
1853 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1854 list_read_capture_types();
1855 exit_status = INVALID_OPTION;
1860 timestamp_set_type(global_dissect_options.time_format);
1863 * Enabled and disabled protocols and heuristic dissectors as per
1864 * command-line options.
1866 if (!setup_enabled_and_disabled_protocols()) {
1867 exit_status = INVALID_OPTION;
1871 /* Build the column format array */
1872 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1875 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1876 capture_opts_trim_ring_num_files(&global_capture_opts);
1879 if (rfilter != NULL) {
1880 tshark_debug("Compiling read filter: '%s'", rfilter);
1881 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
1882 cmdarg_err("%s", err_msg);
1886 #ifdef HAVE_PCAP_OPEN_DEAD
1890 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1892 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1894 " Note: That read filter code looks like a valid capture filter;\n"
1895 " maybe you mixed them up?");
1901 exit_status = INVALID_INTERFACE;
1905 cfile.rfcode = rfcode;
1907 if (dfilter != NULL) {
1908 tshark_debug("Compiling display filter: '%s'", dfilter);
1909 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1910 cmdarg_err("%s", err_msg);
1914 #ifdef HAVE_PCAP_OPEN_DEAD
1918 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1920 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1922 " Note: That display filter code looks like a valid capture filter;\n"
1923 " maybe you mixed them up?");
1929 exit_status = INVALID_FILTER;
1933 cfile.dfcode = dfcode;
1935 if (print_packet_info) {
1936 /* If we're printing as text or PostScript, we have
1937 to create a print stream. */
1938 if (output_action == WRITE_TEXT) {
1939 switch (print_format) {
1942 print_stream = print_stream_text_stdio_new(stdout);
1946 print_stream = print_stream_ps_stdio_new(stdout);
1950 g_assert_not_reached();
1955 /* PDU export requested. Take the ownership of the '-w' file, apply tap
1956 * filters and start tapping. */
1957 if (pdu_export_arg) {
1958 const char *exp_pdu_tap_name = pdu_export_arg;
1959 const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
1960 char *exp_pdu_error;
1965 cmdarg_err("PDUs export requires a capture file (specify with -r).");
1966 exit_status = INVALID_OPTION;
1969 /* Take ownership of the '-w' output file. */
1971 exp_pdu_filename = global_capture_opts.save_file;
1972 global_capture_opts.save_file = NULL;
1974 exp_pdu_filename = output_file_name;
1975 output_file_name = NULL;
1977 if (exp_pdu_filename == NULL) {
1978 cmdarg_err("PDUs export requires an output file (-w).");
1979 exit_status = INVALID_OPTION;
1983 exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
1985 if (exp_pdu_error) {
1986 cmdarg_err("Cannot register tap: %s", exp_pdu_error);
1987 g_free(exp_pdu_error);
1988 exit_status = INVALID_TAP;
1992 if (strcmp(exp_pdu_filename, "-") == 0) {
1993 /* Write to the standard output. */
1996 exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
1998 cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
1999 exit_status = INVALID_FILE;
2004 /* Activate the export PDU tap */
2005 comment = g_strdup_printf("Dump of PDUs from %s", cf_name);
2006 err = exp_pdu_open(&exp_pdu_tap_data, exp_fd, comment);
2008 cfile_dump_open_failure_message("TShark", exp_pdu_filename, err,
2009 WTAP_FILE_TYPE_SUBTYPE_PCAPNG);
2011 exit_status = INVALID_EXPORT;
2016 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2019 tshark_debug("tshark: Opening capture file: %s", cf_name);
2021 * We're reading a capture file.
2023 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2026 exit_status = INVALID_FILE;
2030 /* Start statistics taps; we do so after successfully opening the
2031 capture file, so we know we have something to compute stats
2032 on, and after registering all dissectors, so that MATE will
2033 have registered its field array so we can have a tap filter
2034 with one of MATE's late-registered fields as part of the
2036 start_requested_stats();
2038 /* Do we need to do dissection of packets? That depends on, among
2039 other things, what taps are listening, so determine that after
2040 starting the statistics taps. */
2041 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2043 /* Process the packets in the file */
2044 tshark_debug("tshark: invoking process_cap_file() to process the packets");
2047 success = process_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2048 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2049 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2051 success = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2054 CATCH(OutOfMemoryError) {
2058 "Sorry, but TShark has to terminate now.\n"
2060 "More information and workarounds can be found at\n"
2061 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2067 /* We still dump out the results of taps, etc., as we might have
2068 read some packets; however, we exit with an error status. */
2072 if (pdu_export_arg) {
2073 err = exp_pdu_close(&exp_pdu_tap_data);
2075 cfile_close_failure_message(exp_pdu_filename, err);
2078 g_free(pdu_export_arg);
2079 g_free(exp_pdu_filename);
2082 tshark_debug("tshark: no capture file specified");
2083 /* No capture file specified, so we're supposed to do a live capture
2084 or get a list of link-layer types for a live capture device;
2085 do we have support for live captures? */
2088 /* Warn the user if npf.sys isn't loaded. */
2089 if (!npf_sys_is_running()) {
2090 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
2091 "capturing or\nlisting interfaces.\n");
2095 /* if no interface was specified, pick a default */
2096 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2097 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2098 if (exit_status != 0) {
2102 /* if requested, list the link layer types and exit */
2106 /* Get the list of link-layer types for the capture devices. */
2107 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2108 interface_options *interface_opts;
2109 if_capabilities_t *caps;
2110 char *auth_str = NULL;
2111 int if_caps_queries = caps_queries;
2113 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2114 #ifdef HAVE_PCAP_REMOTE
2115 if (interface_opts->auth_type == CAPTURE_AUTH_PWD) {
2116 auth_str = g_strdup_printf("%s:%s", interface_opts->auth_username, interface_opts->auth_password);
2119 caps = capture_get_if_capabilities(interface_opts->name, interface_opts->monitor_mode, auth_str, &err_str, NULL);
2122 cmdarg_err("%s", err_str);
2124 exit_status = INVALID_CAPABILITY;
2127 if ((if_caps_queries & CAPS_QUERY_LINK_TYPES) && caps->data_link_types == NULL) {
2128 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts->name);
2129 exit_status = INVALID_DATA_LINK;
2132 if ((if_caps_queries & CAPS_QUERY_TIMESTAMP_TYPES) && caps->timestamp_types == NULL) {
2133 cmdarg_err("The capture device \"%s\" has no timestamp types.", interface_opts->name);
2134 exit_status = INVALID_TIMESTAMP_TYPE;
2137 if (interface_opts->monitor_mode)
2138 if_caps_queries |= CAPS_MONITOR_MODE;
2139 capture_opts_print_if_capabilities(caps, interface_opts->name, if_caps_queries);
2140 free_if_capabilities(caps);
2142 exit_status = EXIT_SUCCESS;
2147 * If the standard error isn't a terminal, don't print packet counts,
2148 * as they won't show up on the user's terminal and they'll get in
2149 * the way of error messages in the file (to which we assume the
2150 * standard error was redirected; if it's redirected to the null
2151 * device, there's no point in printing packet counts anyway).
2153 * Otherwise, if we're printing packet information and the standard
2154 * output is a terminal (which we assume means the standard output and
2155 * error are going to the same terminal), don't print packet counts,
2156 * as they'll get in the way of the packet information.
2158 * Otherwise, if the user specified -q, don't print packet counts.
2160 * Otherwise, print packet counts.
2162 * XXX - what if the user wants to do a live capture, doesn't want
2163 * to save it to a file, doesn't want information printed for each
2164 * packet, does want some "-z" statistic, and wants packet counts
2165 * so they know whether they're seeing any packets? -q will
2166 * suppress the information printed for each packet, but it'll
2167 * also suppress the packet counts.
2169 if (!ws_isatty(ws_fileno(stderr)))
2170 print_packet_counts = FALSE;
2171 else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
2172 print_packet_counts = FALSE;
2174 print_packet_counts = FALSE;
2176 print_packet_counts = TRUE;
2178 if (print_packet_info) {
2179 if (!write_preamble(&cfile)) {
2180 show_print_file_io_error(errno);
2181 exit_status = INVALID_FILE;
2186 tshark_debug("tshark: performing live capture");
2188 /* Start statistics taps; we should only do so after the capture
2189 started successfully, so we know we have something to compute
2190 stats, but we currently don't check for that - see below.
2192 We do so after registering all dissectors, so that MATE will
2193 have registered its field array so we can have a tap filter
2194 with one of MATE's late-registered fields as part of the
2196 start_requested_stats();
2198 /* Do we need to do dissection of packets? That depends on, among
2199 other things, what taps are listening, so determine that after
2200 starting the statistics taps. */
2201 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2204 * XXX - this returns FALSE if an error occurred, but it also
2205 * returns FALSE if the capture stops because a time limit
2206 * was reached (and possibly other limits), so we can't assume
2207 * it means an error.
2209 * The capture code is a bit twisty, so it doesn't appear to
2210 * be an easy fix. We just ignore the return value for now.
2211 * Instead, pass on the exit status from the capture child.
2214 exit_status = global_capture_session.fork_child_status;
2216 if (print_packet_info) {
2217 if (!write_finale()) {
2218 show_print_file_io_error(errno);
2222 /* No - complain. */
2223 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2224 exit_status = INVALID_CAPTURE;
2229 if (cfile.provider.frames != NULL) {
2230 free_frame_data_sequence(cfile.provider.frames);
2231 cfile.provider.frames = NULL;
2234 draw_tap_listeners(TRUE);
2235 /* Memory cleanup */
2236 reset_tap_listeners();
2237 funnel_dump_all_text_windows();
2238 epan_free(cfile.epan);
2242 output_fields_free(output_fields);
2243 output_fields = NULL;
2247 destroy_print_stream(print_stream);
2249 capture_opts_cleanup(&global_capture_opts);
2251 g_free(output_file_name);
2253 col_cleanup(&cfile.cinfo);
2254 free_filter_lists();
2258 dfilter_free(dfcode);
2262 /*#define USE_BROKEN_G_MAIN_LOOP*/
2264 #ifdef USE_BROKEN_G_MAIN_LOOP
2267 gboolean loop_running = FALSE;
2269 guint32 packet_count = 0;
2272 typedef struct pipe_input_tag {
2275 ws_process_id *child_process;
2276 pipe_input_cb_t input_cb;
2277 guint pipe_input_id;
2279 GMutex *callback_running;
2283 static pipe_input_t pipe_input;
2286 /* The timer has expired, see if there's stuff to read from the pipe,
2287 if so, do the callback */
2289 pipe_timer_cb(gpointer data)
2295 pipe_input_t *pipe_input_p = data;
2296 gint iterations = 0;
2298 g_mutex_lock (pipe_input_p->callback_running);
2300 /* try to read data from the pipe only 5 times, to avoid blocking */
2301 while(iterations < 5) {
2302 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2304 /* Oddly enough although Named pipes don't work on win9x,
2305 PeekNamedPipe does !!! */
2306 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2307 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2309 /* Get the child process exit status */
2310 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2313 /* If the Peek returned an error, or there are bytes to be read
2314 or the childwatcher thread has terminated then call the normal
2316 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2318 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2320 /* And call the real handler */
2321 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2322 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2323 /* pipe closed, return false so that the timer is stopped */
2324 g_mutex_unlock (pipe_input_p->callback_running);
2329 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2330 /* No data, stop now */
2337 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2339 g_mutex_unlock (pipe_input_p->callback_running);
2341 /* we didn't stopped the timer, so let it run */
2348 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2351 pipe_input.source = source;
2352 pipe_input.child_process = child_process;
2353 pipe_input.user_data = user_data;
2354 pipe_input.input_cb = input_cb;
2357 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2358 g_mutex_init(pipe_input.callback_running);
2359 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2360 do this but that doesn't cover all win32 platforms. GTK can do
2361 this but doesn't seem to work over processes. Attempt to do
2362 something similar here, start a timer and check for data on every
2364 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2365 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2369 static const nstime_t *
2370 tshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
2372 if (prov->ref && prov->ref->num == frame_num)
2373 return &prov->ref->abs_ts;
2375 if (prov->prev_dis && prov->prev_dis->num == frame_num)
2376 return &prov->prev_dis->abs_ts;
2378 if (prov->prev_cap && prov->prev_cap->num == frame_num)
2379 return &prov->prev_cap->abs_ts;
2382 frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
2384 return (fd) ? &fd->abs_ts : NULL;
2391 tshark_epan_new(capture_file *cf)
2393 static const struct packet_provider_funcs funcs = {
2394 tshark_get_frame_ts,
2395 cap_file_provider_get_interface_name,
2396 cap_file_provider_get_interface_description,
2400 return epan_new(&cf->provider, &funcs);
2410 #ifdef USE_TSHARK_SELECT
2414 struct sigaction action, oldaction;
2417 /* Create new dissection section. */
2418 epan_free(cfile.epan);
2419 cfile.epan = tshark_epan_new(&cfile);
2422 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2423 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2425 /* Catch SIGINT and SIGTERM and, if we get either of them,
2426 clean up and exit. If SIGHUP isn't being ignored, catch
2427 it too and, if we get it, clean up and exit.
2429 We restart any read that was in progress, so that it doesn't
2430 disrupt reading from the sync pipe. The signal handler tells
2431 the capture child to finish; it will report that it finished,
2432 or will exit abnormally, so we'll stop reading from the sync
2433 pipe, pick up the exit status, and quit. */
2434 memset(&action, 0, sizeof(action));
2435 action.sa_handler = capture_cleanup;
2436 action.sa_flags = SA_RESTART;
2437 sigemptyset(&action.sa_mask);
2438 sigaction(SIGTERM, &action, NULL);
2439 sigaction(SIGINT, &action, NULL);
2440 sigaction(SIGHUP, NULL, &oldaction);
2441 if (oldaction.sa_handler == SIG_DFL)
2442 sigaction(SIGHUP, &action, NULL);
2445 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2446 quiet mode, report the number of packets we've captured.
2448 Again, restart any read that was in progress, so that it doesn't
2449 disrupt reading from the sync pipe. */
2450 action.sa_handler = report_counts_siginfo;
2451 action.sa_flags = SA_RESTART;
2452 sigemptyset(&action.sa_mask);
2453 sigaction(SIGINFO, &action, NULL);
2454 #endif /* SIGINFO */
2457 global_capture_session.state = CAPTURE_PREPARING;
2459 /* Let the user know which interfaces were chosen. */
2460 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2461 interface_options *interface_opts;
2463 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2464 interface_opts->descr = get_interface_descriptive_name(interface_opts->name);
2466 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2467 if (really_quiet == FALSE)
2468 fprintf(stderr, "Capturing on %s\n", str->str);
2470 g_string_free(str, TRUE);
2472 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2478 * Force synchronous resolution of IP addresses; we're doing only
2479 * one pass, so we can't do it in the background and fix up past
2482 set_resolution_synchrony(TRUE);
2484 /* the actual capture loop
2486 * XXX - glib doesn't seem to provide any event based loop handling.
2488 * XXX - for whatever reason,
2489 * calling g_main_loop_new() ends up in 100% cpu load.
2491 * But that doesn't matter: in UNIX we can use select() to find an input
2492 * source with something to do.
2494 * But that doesn't matter because we're in a CLI (that doesn't need to
2495 * update a GUI or something at the same time) so it's OK if we block
2496 * trying to read from the pipe.
2498 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2499 * wrong (but I leave it there in case I am...).
2502 #ifdef USE_TSHARK_SELECT
2504 FD_SET(pipe_input.source, &readfds);
2507 loop_running = TRUE;
2511 while (loop_running)
2513 #ifdef USE_TSHARK_SELECT
2514 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2518 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2520 } else if (ret == 1) {
2522 /* Call the real handler */
2523 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2524 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2527 #ifdef USE_TSHARK_SELECT
2532 CATCH(OutOfMemoryError) {
2536 "Sorry, but TShark has to terminate now.\n"
2538 "More information and workarounds can be found at\n"
2539 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2546 /* capture child detected an error */
2548 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2550 cmdarg_err("%s", error_msg);
2551 cmdarg_err_cont("%s", secondary_error_msg);
2555 /* capture child detected an capture filter related error */
2557 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2559 capture_options *capture_opts = cap_session->capture_opts;
2560 dfilter_t *rfcode = NULL;
2561 interface_options *interface_opts;
2563 g_assert(i < capture_opts->ifaces->len);
2564 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
2566 if (dfilter_compile(interface_opts->cfilter, &rfcode, NULL) && rfcode != NULL) {
2568 "Invalid capture filter \"%s\" for interface '%s'.\n"
2570 "That string looks like a valid display filter; however, it isn't a valid\n"
2571 "capture filter (%s).\n"
2573 "Note that display filters and capture filters don't have the same syntax,\n"
2574 "so you can't use most display filter expressions as capture filters.\n"
2576 "See the User's Guide for a description of the capture filter syntax.",
2577 interface_opts->cfilter, interface_opts->descr, error_message);
2578 dfilter_free(rfcode);
2581 "Invalid capture filter \"%s\" for interface '%s'.\n"
2583 "That string isn't a valid capture filter (%s).\n"
2584 "See the User's Guide for a description of the capture filter syntax.",
2585 interface_opts->cfilter, interface_opts->descr, error_message);
2590 /* capture child tells us we have a new (or the first) capture file */
2592 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2594 capture_options *capture_opts = cap_session->capture_opts;
2595 capture_file *cf = (capture_file *) cap_session->cf;
2596 gboolean is_tempfile;
2599 if (cap_session->state == CAPTURE_PREPARING) {
2600 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2602 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2604 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2606 /* free the old filename */
2607 if (capture_opts->save_file != NULL) {
2609 /* we start a new capture file, close the old one (if we had one before) */
2610 if (cf->state != FILE_CLOSED) {
2611 if (cf->provider.wth != NULL) {
2612 wtap_close(cf->provider.wth);
2613 cf->provider.wth = NULL;
2615 cf->state = FILE_CLOSED;
2618 g_free(capture_opts->save_file);
2619 is_tempfile = FALSE;
2621 epan_free(cf->epan);
2622 cf->epan = tshark_epan_new(cf);
2624 /* we didn't had a save_file before, must be a tempfile */
2628 /* save the new filename */
2629 capture_opts->save_file = g_strdup(new_file);
2631 /* if we are in real-time mode, open the new file now */
2632 if (do_dissection) {
2633 /* this is probably unecessary, but better safe than sorry */
2634 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2635 /* Attempt to open the capture file and set up to read from it. */
2636 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2640 /* Don't unlink (delete) the save file - leave it around,
2641 for debugging purposes. */
2642 g_free(capture_opts->save_file);
2643 capture_opts->save_file = NULL;
2648 cap_session->state = CAPTURE_RUNNING;
2654 /* capture child tells us we have new packets to read */
2656 capture_input_new_packets(capture_session *cap_session, int to_read)
2662 capture_file *cf = (capture_file *)cap_session->cf;
2663 gboolean filtering_tap_listeners;
2668 * Prevent a SIGINFO handler from writing to the standard error while
2669 * we're doing so or writing to the standard output; instead, have it
2670 * just set a flag telling us to print that information when we're done.
2673 #endif /* SIGINFO */
2675 /* Do we have any tap listeners with filters? */
2676 filtering_tap_listeners = have_filtering_tap_listeners();
2678 /* Get the union of the flags for all tap listeners. */
2679 tap_flags = union_of_tap_listener_flags();
2681 if (do_dissection) {
2682 gboolean create_proto_tree;
2683 epan_dissect_t *edt;
2686 * Determine whether we need to create a protocol tree.
2689 * we're going to apply a read filter;
2691 * we're going to apply a display filter;
2693 * we're going to print the protocol tree;
2695 * one of the tap listeners is going to apply a filter;
2697 * one of the tap listeners requires a protocol tree;
2699 * a postdissector wants field values or protocols
2700 * on the first pass;
2702 * we have custom columns (which require field values, which
2703 * currently requires that we build a protocol tree).
2706 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2707 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
2708 have_custom_cols(&cf->cinfo) || dissect_color);
2710 /* The protocol tree will be "visible", i.e., printed, only if we're
2711 printing packet details, which is true if we're printing stuff
2712 ("print_packet_info" is true) and we're in verbose mode
2713 ("packet_details" is true). */
2714 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2716 while (to_read-- && cf->provider.wth) {
2717 wtap_cleareof(cf->provider.wth);
2718 ret = wtap_read(cf->provider.wth, &err, &err_info, &data_offset);
2719 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
2721 /* read from file failed, tell the capture child to stop */
2722 sync_pipe_stop(cap_session);
2723 wtap_close(cf->provider.wth);
2724 cf->provider.wth = NULL;
2726 ret = process_packet_single_pass(cf, edt, data_offset,
2727 wtap_get_rec(cf->provider.wth),
2728 wtap_get_buf_ptr(cf->provider.wth), tap_flags);
2731 /* packet successfully read and gone through the "Read Filter" */
2736 epan_dissect_free(edt);
2740 * Dumpcap's doing all the work; we're not doing any dissection.
2741 * Count all the packets it wrote.
2743 packet_count += to_read;
2746 if (print_packet_counts) {
2747 /* We're printing packet counts. */
2748 if (packet_count != 0) {
2749 fprintf(stderr, "\r%u ", packet_count);
2750 /* stderr could be line buffered */
2757 * Allow SIGINFO handlers to write.
2762 * If a SIGINFO handler asked us to write out capture counts, do so.
2766 #endif /* SIGINFO */
2772 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2773 /* Report the count only if we aren't printing a packet count
2774 as packets arrive. */
2775 fprintf(stderr, "%u packet%s captured\n", packet_count,
2776 plurality(packet_count, "", "s"));
2779 infoprint = FALSE; /* we just reported it */
2780 #endif /* SIGINFO */
2785 report_counts_siginfo(int signum _U_)
2787 int sav_errno = errno;
2788 /* If we've been told to delay printing, just set a flag asking
2789 that we print counts (if we're supposed to), otherwise print
2790 the count of packets captured (if we're supposed to). */
2797 #endif /* SIGINFO */
2800 /* capture child detected any packet drops? */
2802 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2804 if (print_packet_counts) {
2805 /* We're printing packet counts to stderr.
2806 Send a newline so that we move to the line after the packet count. */
2807 fprintf(stderr, "\n");
2811 /* We're printing packet counts to stderr.
2812 Send a newline so that we move to the line after the packet count. */
2813 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2819 * Capture child closed its side of the pipe, report any error and
2820 * do the required cleanup.
2823 capture_input_closed(capture_session *cap_session, gchar *msg)
2825 capture_file *cf = (capture_file *) cap_session->cf;
2828 fprintf(stderr, "tshark: %s\n", msg);
2832 if (cf != NULL && cf->provider.wth != NULL) {
2833 wtap_close(cf->provider.wth);
2834 if (cf->is_tempfile) {
2835 ws_unlink(cf->filename);
2838 #ifdef USE_BROKEN_G_MAIN_LOOP
2839 /*g_main_loop_quit(loop);*/
2840 g_main_loop_quit(loop);
2842 loop_running = FALSE;
2851 capture_cleanup(DWORD ctrltype _U_)
2853 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2854 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2855 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2856 like SIGTERM at least when the machine's shutting down.
2858 For now, we handle them all as indications that we should clean up
2859 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2862 We must return TRUE so that no other handler - such as one that would
2863 terminate the process - gets called.
2865 XXX - for some reason, typing ^C to TShark, if you run this in
2866 a Cygwin console window in at least some versions of Cygwin,
2867 causes TShark to terminate immediately; this routine gets
2868 called, but the main loop doesn't get a chance to run and
2869 exit cleanly, at least if this is compiled with Microsoft Visual
2870 C++ (i.e., it's a property of the Cygwin console window or Bash;
2871 it happens if TShark is not built with Cygwin - for all I know,
2872 building it with Cygwin may make the problem go away). */
2874 /* tell the capture child to stop */
2875 sync_pipe_stop(&global_capture_session);
2877 /* don't stop our own loop already here, otherwise status messages and
2878 * cleanup wouldn't be done properly. The child will indicate the stop of
2879 * everything by calling capture_input_closed() later */
2885 capture_cleanup(int signum _U_)
2887 /* tell the capture child to stop */
2888 sync_pipe_stop(&global_capture_session);
2890 /* don't stop our own loop already here, otherwise status messages and
2891 * cleanup wouldn't be done properly. The child will indicate the stop of
2892 * everything by calling capture_input_closed() later */
2895 #endif /* HAVE_LIBPCAP */
2898 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2899 gint64 offset, wtap_rec *rec,
2906 /* The frame number of this packet is one more than the count of
2907 frames in this packet. */
2908 framenum = cf->count + 1;
2910 /* If we're not running a display filter and we're not printing any
2911 packet information, we don't need to do a dissection. This means
2912 that all packets can be marked as 'passed'. */
2915 frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
2917 /* If we're going to run a read filter or a display filter, set up to
2918 do a dissection and do so. (This is the first pass of two passes
2919 over the packets, so we will not be printing any information
2920 from the dissection or running taps on the packet; if we're doing
2921 any of that, we'll do it in the second pass.) */
2923 /* If we're running a read filter, prime the epan_dissect_t with that
2926 epan_dissect_prime_with_dfilter(edt, cf->rfcode);
2929 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2931 /* This is the first pass, so prime the epan_dissect_t with the
2932 hfids postdissectors want on the first pass. */
2933 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
2935 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2936 &cf->provider.ref, cf->provider.prev_dis);
2937 if (cf->provider.ref == &fdlocal) {
2938 ref_frame = fdlocal;
2939 cf->provider.ref = &ref_frame;
2942 epan_dissect_run(edt, cf->cd_t, rec,
2943 frame_tvbuff_new(&cf->provider, &fdlocal, pd),
2946 /* Run the read filter if we have one. */
2948 passed = dfilter_apply_edt(cf->rfcode, edt);
2952 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2953 cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
2955 /* If we're not doing dissection then there won't be any dependent frames.
2956 * More importantly, edt.pi.dependent_frames won't be initialized because
2957 * epan hasn't been initialized.
2958 * if we *are* doing dissection, then mark the dependent frames, but only
2959 * if a display filter was given and it matches this packet.
2961 if (edt && cf->dfcode) {
2962 if (dfilter_apply_edt(cf->dfcode, edt)) {
2963 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
2969 /* if we don't add it to the frame_data_sequence, clean it up right now
2971 frame_data_destroy(&fdlocal);
2975 epan_dissect_reset(edt);
2981 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
2982 frame_data *fdata, wtap_rec *rec,
2983 Buffer *buf, guint tap_flags)
2988 /* If we're not running a display filter and we're not printing any
2989 packet information, we don't need to do a dissection. This means
2990 that all packets can be marked as 'passed'. */
2993 /* If we're going to print packet information, or we're going to
2994 run a read filter, or we're going to process taps, set up to
2995 do a dissection and do so. (This is the second pass of two
2996 passes over the packets; that's the pass where we print
2997 packet information or run taps.) */
2999 /* If we're running a display filter, prime the epan_dissect_t with that
3002 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3004 col_custom_prime_edt(edt, &cf->cinfo);
3006 /* We only need the columns if either
3007 1) some tap needs the columns
3009 2) we're printing packet info but we're *not* verbose; in verbose
3010 mode, we print the protocol tree, not the protocol summary.
3012 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3017 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3018 &cf->provider.ref, cf->provider.prev_dis);
3019 if (cf->provider.ref == fdata) {
3021 cf->provider.ref = &ref_frame;
3024 if (dissect_color) {
3025 color_filters_prime_edt(edt);
3026 fdata->flags.need_colorize = 1;
3029 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3030 frame_tvbuff_new_buffer(&cf->provider, fdata, buf),
3033 /* Run the read/display filter if we have one. */
3035 passed = dfilter_apply_edt(cf->dfcode, edt);
3039 frame_data_set_after_dissect(fdata, &cum_bytes);
3040 /* Process this packet. */
3041 if (print_packet_info) {
3042 /* We're printing packet information; print the information for
3044 print_packet(cf, edt);
3046 /* If we're doing "line-buffering", flush the standard output
3047 after every packet. See the comment above, for the "-l"
3048 option, for an explanation of why we do that. */
3052 if (ferror(stdout)) {
3053 show_print_file_io_error(errno);
3057 cf->provider.prev_dis = fdata;
3059 cf->provider.prev_cap = fdata;
3062 epan_dissect_reset(edt);
3064 return passed || fdata->flags.dependent_of_displayed;
3068 process_cap_file(capture_file *cf, char *save_file, int out_file_type,
3069 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3071 gboolean success = TRUE;
3073 int snapshot_length;
3076 int err = 0, err_pass1 = 0;
3077 gchar *err_info = NULL, *err_info_pass1 = NULL;
3079 gboolean filtering_tap_listeners;
3081 GArray *shb_hdrs = NULL;
3082 wtapng_iface_descriptions_t *idb_inf = NULL;
3083 GArray *nrb_hdrs = NULL;
3086 epan_dissect_t *edt = NULL;
3087 char *shb_user_appl;
3089 wtap_rec_init(&rec);
3091 idb_inf = wtap_file_get_idb_info(cf->provider.wth);
3092 #ifdef PCAP_NG_DEFAULT
3093 if (idb_inf->interface_data->len > 1) {
3094 linktype = WTAP_ENCAP_PER_PACKET;
3096 linktype = wtap_file_encap(cf->provider.wth);
3099 linktype = wtap_file_encap(cf->provider.wth);
3101 if (save_file != NULL) {
3102 /* Set up to write to the capture file. */
3103 snapshot_length = wtap_snapshot_length(cf->provider.wth);
3104 if (snapshot_length == 0) {
3105 /* Snapshot length of input file not known. */
3106 snapshot_length = WTAP_MAX_PACKET_SIZE_STANDARD;
3108 tshark_debug("tshark: snapshot_length = %d", snapshot_length);
3110 shb_hdrs = wtap_file_get_shb_for_new_file(cf->provider.wth);
3111 nrb_hdrs = wtap_file_get_nrb_for_new_file(cf->provider.wth);
3113 /* If we don't have an application name add Tshark */
3114 if (wtap_block_get_string_option_value(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
3115 /* this is free'd by wtap_block_free() later */
3116 wtap_block_add_string_option_format(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "TShark (Wireshark) %s", get_ws_vcs_version_info());
3119 if (linktype != WTAP_ENCAP_PER_PACKET &&
3120 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3121 tshark_debug("tshark: writing PCAP format to %s", save_file);
3122 if (strcmp(save_file, "-") == 0) {
3123 /* Write to the standard output. */
3124 pdh = wtap_dump_open_stdout(out_file_type, linktype,
3125 snapshot_length, FALSE /* compressed */, &err);
3127 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3128 snapshot_length, FALSE /* compressed */, &err);
3132 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3133 if (strcmp(save_file, "-") == 0) {
3134 /* Write to the standard output. */
3135 pdh = wtap_dump_open_stdout_ng(out_file_type, linktype,
3136 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3138 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3139 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3147 /* We couldn't set up to write to the capture file. */
3148 cfile_dump_open_failure_message("TShark", save_file, err, out_file_type);
3153 /* Set up to print packet information. */
3154 if (print_packet_info) {
3155 if (!write_preamble(cf)) {
3156 show_print_file_io_error(errno);
3166 /* Do we have any tap listeners with filters? */
3167 filtering_tap_listeners = have_filtering_tap_listeners();
3169 /* Get the union of the flags for all tap listeners. */
3170 tap_flags = union_of_tap_listener_flags();
3172 if (perform_two_pass_analysis) {
3175 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3177 /* Allocate a frame_data_sequence for all the frames. */
3178 cf->provider.frames = new_frame_data_sequence();
3180 if (do_dissection) {
3181 gboolean create_proto_tree;
3184 * Determine whether we need to create a protocol tree.
3187 * we're going to apply a read filter;
3189 * we're going to apply a display filter;
3191 * a postdissector wants field values or protocols
3192 * on the first pass.
3195 (cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
3197 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3199 /* We're not going to display the protocol tree on this pass,
3200 so it's not going to be "visible". */
3201 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3204 tshark_debug("tshark: reading records for first pass");
3205 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3206 if (process_packet_first_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3207 wtap_get_buf_ptr(cf->provider.wth))) {
3208 /* Stop reading if we have the maximum number of packets;
3209 * When the -c option has not been used, max_packet_count
3210 * starts at 0, which practically means, never stop reading.
3211 * (unless we roll over max_packet_count ?)
3213 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3214 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3215 max_packet_count, data_offset, max_byte_count);
3216 err = 0; /* This is not an error */
3223 * If we got a read error on the first pass, remember the error, so
3224 * but do the second pass, so we can at least process the packets we
3225 * read, and then report the first-pass error after the second pass
3226 * (and before we report any second-pass errors), so all the the
3227 * errors show up at the end.
3231 err_info_pass1 = err_info;
3237 epan_dissect_free(edt);
3241 /* Close the sequential I/O side, to free up memory it requires. */
3242 wtap_sequential_close(cf->provider.wth);
3244 /* Allow the protocol dissectors to free up memory that they
3245 * don't need after the sequential run-through of the packets. */
3246 postseq_cleanup_all_protocols();
3248 cf->provider.prev_dis = NULL;
3249 cf->provider.prev_cap = NULL;
3250 ws_buffer_init(&buf, 1500);
3252 tshark_debug("tshark: done with first pass");
3254 if (do_dissection) {
3255 gboolean create_proto_tree;
3258 * Determine whether we need to create a protocol tree.
3261 * we're going to apply a display filter;
3263 * we're going to print the protocol tree;
3265 * one of the tap listeners requires a protocol tree;
3267 * we have custom columns (which require field values, which
3268 * currently requires that we build a protocol tree).
3271 (cf->dfcode || print_details || filtering_tap_listeners ||
3272 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
3274 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3276 /* The protocol tree will be "visible", i.e., printed, only if we're
3277 printing packet details, which is true if we're printing stuff
3278 ("print_packet_info" is true) and we're in verbose mode
3279 ("packet_details" is true). */
3280 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3284 * Force synchronous resolution of IP addresses; in this pass, we
3285 * can't do it in the background and fix up past dissections.
3287 set_resolution_synchrony(TRUE);
3289 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3290 fdata = frame_data_sequence_find(cf->provider.frames, framenum);
3291 if (wtap_seek_read(cf->provider.wth, fdata->file_off, &rec, &buf, &err,
3293 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3294 if (process_packet_second_pass(cf, edt, fdata, &rec, &buf,
3296 /* Either there's no read filtering or this packet passed the
3297 filter, so, if we're writing to a capture file, write
3300 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3301 if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3302 /* Error writing to a capture file */
3303 tshark_debug("tshark: error writing to a capture file (%d)", err);
3305 /* Report the error.
3306 XXX - framenum is not necessarily the frame number in
3307 the input file if there was a read filter. */
3308 cfile_write_failure_message("TShark", cf->filename, save_file,
3309 err, err_info, framenum,
3311 wtap_dump_close(pdh, &err);
3312 wtap_block_array_free(shb_hdrs);
3313 wtap_block_array_free(nrb_hdrs);
3322 epan_dissect_free(edt);
3326 ws_buffer_free(&buf);
3328 tshark_debug("tshark: done with second pass");
3331 /* !perform_two_pass_analysis */
3333 gboolean create_proto_tree = FALSE;
3334 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3336 if (do_dissection) {
3338 * Determine whether we need to create a protocol tree.
3341 * we're going to apply a read filter;
3343 * we're going to apply a display filter;
3345 * we're going to print the protocol tree;
3347 * one of the tap listeners is going to apply a filter;
3349 * one of the tap listeners requires a protocol tree;
3351 * a postdissector wants field values or protocols
3352 * on the first pass;
3354 * we have custom columns (which require field values, which
3355 * currently requires that we build a protocol tree).
3358 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3359 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
3360 have_custom_cols(&cf->cinfo) || dissect_color);
3362 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3364 /* The protocol tree will be "visible", i.e., printed, only if we're
3365 printing packet details, which is true if we're printing stuff
3366 ("print_packet_info" is true) and we're in verbose mode
3367 ("packet_details" is true). */
3368 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3372 * Force synchronous resolution of IP addresses; we're doing only
3373 * one pass, so we can't do it in the background and fix up past
3376 set_resolution_synchrony(TRUE);
3378 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3381 tshark_debug("tshark: processing packet #%d", framenum);
3383 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
3385 if (process_packet_single_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3386 wtap_get_buf_ptr(cf->provider.wth), tap_flags)) {
3387 /* Either there's no read filtering or this packet passed the
3388 filter, so, if we're writing to a capture file, write
3391 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3392 if (!wtap_dump(pdh, wtap_get_rec(cf->provider.wth), wtap_get_buf_ptr(cf->provider.wth), &err, &err_info)) {
3393 /* Error writing to a capture file */
3394 tshark_debug("tshark: error writing to a capture file (%d)", err);
3395 cfile_write_failure_message("TShark", cf->filename, save_file,
3396 err, err_info, framenum, out_file_type);
3397 wtap_dump_close(pdh, &err);
3398 wtap_block_array_free(shb_hdrs);
3399 wtap_block_array_free(nrb_hdrs);
3404 /* Stop reading if we have the maximum number of packets;
3405 * When the -c option has not been used, max_packet_count
3406 * starts at 0, which practically means, never stop reading.
3407 * (unless we roll over max_packet_count ?)
3409 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3410 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3411 max_packet_count, data_offset, max_byte_count);
3412 err = 0; /* This is not an error */
3418 epan_dissect_free(edt);
3423 wtap_rec_cleanup(&rec);
3425 if (err != 0 || err_pass1 != 0) {
3426 tshark_debug("tshark: something failed along the line (%d)", err);
3428 * Print a message noting that the read failed somewhere along the line.
3430 * If we're printing packet data, and the standard output and error are
3431 * going to the same place, flush the standard output, so everything
3432 * buffered up is written, and then print a newline to the standard error
3433 * before printing the error message, to separate it from the packet
3434 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3435 * the _fstat() documentation at Microsoft doesn't indicate whether
3436 * st_ino is even supported.)
3439 if (print_packet_info) {
3440 ws_statb64 stat_stdout, stat_stderr;
3442 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3443 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3444 stat_stdout.st_ino == stat_stderr.st_ino) {
3446 fprintf(stderr, "\n");
3451 if (err_pass1 != 0) {
3452 /* Error on pass 1 of two-pass processing. */
3453 cfile_read_failure_message("TShark", cf->filename, err_pass1,
3457 /* Error on pass 2 of two-pass processing or on the only pass of
3458 one-pass processing. */
3459 cfile_read_failure_message("TShark", cf->filename, err, err_info);
3463 if (save_file != NULL) {
3464 if (pdh && out_file_name_res) {
3465 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3466 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3467 wtap_file_type_subtype_short_string(out_file_type));
3470 /* Now close the capture file. */
3471 if (!wtap_dump_close(pdh, &err)) {
3472 cfile_close_failure_message(save_file, err);
3476 if (print_packet_info) {
3477 if (!write_finale()) {
3478 show_print_file_io_error(errno);
3485 wtap_close(cf->provider.wth);
3486 cf->provider.wth = NULL;
3488 wtap_block_array_free(shb_hdrs);
3489 wtap_block_array_free(nrb_hdrs);
3495 process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
3496 wtap_rec *rec, const guchar *pd,
3503 /* Count this packet. */
3506 /* If we're not running a display filter and we're not printing any
3507 packet information, we don't need to do a dissection. This means
3508 that all packets can be marked as 'passed'. */
3511 frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
3513 /* If we're going to print packet information, or we're going to
3514 run a read filter, or we're going to process taps, set up to
3515 do a dissection and do so. (This is the one and only pass
3516 over the packets, so, if we'll be printing packet information
3517 or running taps, we'll be doing it here.) */
3519 /* If we're running a filter, prime the epan_dissect_t with that
3522 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3524 /* This is the first and only pass, so prime the epan_dissect_t
3525 with the hfids postdissectors want on the first pass. */
3526 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
3528 col_custom_prime_edt(edt, &cf->cinfo);
3530 /* We only need the columns if either
3531 1) some tap needs the columns
3533 2) we're printing packet info but we're *not* verbose; in verbose
3534 mode, we print the protocol tree, not the protocol summary.
3536 3) there is a column mapped as an individual field */
3537 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3542 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3543 &cf->provider.ref, cf->provider.prev_dis);
3544 if (cf->provider.ref == &fdata) {
3546 cf->provider.ref = &ref_frame;
3549 if (dissect_color) {
3550 color_filters_prime_edt(edt);
3551 fdata.flags.need_colorize = 1;
3554 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3555 frame_tvbuff_new(&cf->provider, &fdata, pd),
3558 /* Run the filter if we have it. */
3560 passed = dfilter_apply_edt(cf->dfcode, edt);
3564 frame_data_set_after_dissect(&fdata, &cum_bytes);
3566 /* Process this packet. */
3567 if (print_packet_info) {
3568 /* We're printing packet information; print the information for
3571 print_packet(cf, edt);
3573 /* If we're doing "line-buffering", flush the standard output
3574 after every packet. See the comment above, for the "-l"
3575 option, for an explanation of why we do that. */
3579 if (ferror(stdout)) {
3580 show_print_file_io_error(errno);
3585 /* this must be set after print_packet() [bug #8160] */
3586 prev_dis_frame = fdata;
3587 cf->provider.prev_dis = &prev_dis_frame;
3590 prev_cap_frame = fdata;
3591 cf->provider.prev_cap = &prev_cap_frame;
3594 epan_dissect_reset(edt);
3595 frame_data_destroy(&fdata);
3601 write_preamble(capture_file *cf)
3603 switch (output_action) {
3606 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3610 write_pdml_preamble(stdout, cf->filename);
3612 write_psml_preamble(&cf->cinfo, stdout);
3613 return !ferror(stdout);
3616 write_fields_preamble(output_fields, stdout);
3617 return !ferror(stdout);
3620 case WRITE_JSON_RAW:
3621 write_json_preamble(stdout);
3622 return !ferror(stdout);
3625 return !ferror(stdout);
3628 g_assert_not_reached();
3634 get_line_buf(size_t len)
3636 static char *line_bufp = NULL;
3637 static size_t line_buf_len = 256;
3638 size_t new_line_buf_len;
3640 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3641 new_line_buf_len *= 2)
3643 if (line_bufp == NULL) {
3644 line_buf_len = new_line_buf_len;
3645 line_bufp = (char *)g_malloc(line_buf_len + 1);
3647 if (new_line_buf_len > line_buf_len) {
3648 line_buf_len = new_line_buf_len;
3649 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3656 put_string(char *dest, const char *str, size_t str_len)
3658 memcpy(dest, str, str_len);
3659 dest[str_len] = '\0';
3663 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3667 for (i = str_len; i < str_with_spaces; i++)
3670 put_string(dest, str, str_len);
3674 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3678 memcpy(dest, str, str_len);
3679 for (i = str_len; i < str_with_spaces; i++)
3682 dest[str_with_spaces] = '\0';
3686 print_columns(capture_file *cf, const epan_dissect_t *edt)
3693 col_item_t* col_item;
3694 gchar str_format[11];
3695 const color_filter_t *color_filter = NULL;
3697 line_bufp = get_line_buf(256);
3702 color_filter = edt->pi.fd->color_filter;
3704 for (i = 0; i < cf->cinfo.num_cols; i++) {
3705 col_item = &cf->cinfo.columns[i];
3706 /* Skip columns not marked as visible. */
3707 if (!get_column_visible(i))
3709 switch (col_item->col_fmt) {
3711 column_len = col_len = strlen(col_item->col_data);
3714 line_bufp = get_line_buf(buf_offset + column_len);
3715 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3721 case COL_ABS_YMD_TIME: /* XXX - wider */
3722 case COL_ABS_YDOY_TIME: /* XXX - wider */
3724 case COL_UTC_YMD_TIME: /* XXX - wider */
3725 case COL_UTC_YDOY_TIME: /* XXX - wider */
3726 column_len = col_len = strlen(col_item->col_data);
3727 if (column_len < 10)
3729 line_bufp = get_line_buf(buf_offset + column_len);
3730 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3736 case COL_DEF_DL_SRC:
3737 case COL_RES_DL_SRC:
3738 case COL_UNRES_DL_SRC:
3739 case COL_DEF_NET_SRC:
3740 case COL_RES_NET_SRC:
3741 case COL_UNRES_NET_SRC:
3742 column_len = col_len = strlen(col_item->col_data);
3743 if (column_len < 12)
3745 line_bufp = get_line_buf(buf_offset + column_len);
3746 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3752 case COL_DEF_DL_DST:
3753 case COL_RES_DL_DST:
3754 case COL_UNRES_DL_DST:
3755 case COL_DEF_NET_DST:
3756 case COL_RES_NET_DST:
3757 case COL_UNRES_NET_DST:
3758 column_len = col_len = strlen(col_item->col_data);
3759 if (column_len < 12)
3761 line_bufp = get_line_buf(buf_offset + column_len);
3762 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3766 column_len = strlen(col_item->col_data);
3767 line_bufp = get_line_buf(buf_offset + column_len);
3768 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3771 buf_offset += column_len;
3772 if (i != cf->cinfo.num_cols - 1) {
3774 * This isn't the last column, so we need to print a
3775 * separator between this column and the next.
3777 * If we printed a network source and are printing a
3778 * network destination of the same type next, separate
3779 * them with a UTF-8 right arrow; if we printed a network
3780 * destination and are printing a network source of the same
3781 * type next, separate them with a UTF-8 left arrow;
3782 * otherwise separate them with a space.
3784 * We add enough space to the buffer for " \xe2\x86\x90 "
3785 * or " \xe2\x86\x92 ", even if we're only adding " ".
3787 line_bufp = get_line_buf(buf_offset + 5);
3788 switch (col_item->col_fmt) {
3793 switch (cf->cinfo.columns[i+1].col_fmt) {
3798 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3799 put_string(line_bufp + buf_offset, str_format, 5);
3804 put_string(line_bufp + buf_offset, delimiter_char, 1);
3810 case COL_DEF_DL_SRC:
3811 case COL_RES_DL_SRC:
3812 case COL_UNRES_DL_SRC:
3813 switch (cf->cinfo.columns[i+1].col_fmt) {
3815 case COL_DEF_DL_DST:
3816 case COL_RES_DL_DST:
3817 case COL_UNRES_DL_DST:
3818 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3819 put_string(line_bufp + buf_offset, str_format, 5);
3824 put_string(line_bufp + buf_offset, delimiter_char, 1);
3830 case COL_DEF_NET_SRC:
3831 case COL_RES_NET_SRC:
3832 case COL_UNRES_NET_SRC:
3833 switch (cf->cinfo.columns[i+1].col_fmt) {
3835 case COL_DEF_NET_DST:
3836 case COL_RES_NET_DST:
3837 case COL_UNRES_NET_DST:
3838 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3839 put_string(line_bufp + buf_offset, str_format, 5);
3844 put_string(line_bufp + buf_offset, delimiter_char, 1);
3853 switch (cf->cinfo.columns[i+1].col_fmt) {
3858 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3859 put_string(line_bufp + buf_offset, str_format, 5);
3864 put_string(line_bufp + buf_offset, delimiter_char, 1);
3870 case COL_DEF_DL_DST:
3871 case COL_RES_DL_DST:
3872 case COL_UNRES_DL_DST:
3873 switch (cf->cinfo.columns[i+1].col_fmt) {
3875 case COL_DEF_DL_SRC:
3876 case COL_RES_DL_SRC:
3877 case COL_UNRES_DL_SRC:
3878 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3879 put_string(line_bufp + buf_offset, str_format, 5);
3884 put_string(line_bufp + buf_offset, delimiter_char, 1);
3890 case COL_DEF_NET_DST:
3891 case COL_RES_NET_DST:
3892 case COL_UNRES_NET_DST:
3893 switch (cf->cinfo.columns[i+1].col_fmt) {
3895 case COL_DEF_NET_SRC:
3896 case COL_RES_NET_SRC:
3897 case COL_UNRES_NET_SRC:
3898 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3899 put_string(line_bufp + buf_offset, str_format, 5);
3904 put_string(line_bufp + buf_offset, delimiter_char, 1);
3911 put_string(line_bufp + buf_offset, delimiter_char, 1);
3918 if (dissect_color && color_filter != NULL)
3919 return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
3921 return print_line(print_stream, 0, line_bufp);
3925 print_packet(capture_file *cf, epan_dissect_t *edt)
3927 if (print_summary || output_fields_has_cols(output_fields))
3928 /* Just fill in the columns. */
3929 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3931 /* Print summary columns and/or protocol tree */
3932 switch (output_action) {
3935 if (print_summary && !print_columns(cf, edt))
3937 if (print_details) {
3938 if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
3939 print_hex, edt, output_only_tables, print_stream))
3942 if (!print_line(print_stream, 0, separator))
3949 if (print_summary) {
3950 write_psml_columns(edt, stdout, dissect_color);
3951 return !ferror(stdout);
3953 if (print_details) {
3954 write_pdml_proto_tree(output_fields, protocolfilter, protocolfilter_flags, edt, &cf->cinfo, stdout, dissect_color);
3956 return !ferror(stdout);
3961 if (print_summary) {
3962 /*No non-verbose "fields" format */
3963 g_assert_not_reached();
3965 if (print_details) {
3966 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3968 return !ferror(stdout);
3974 g_assert_not_reached();
3975 if (print_details) {
3976 write_json_proto_tree(output_fields, print_dissections_expanded,
3977 print_hex, protocolfilter, protocolfilter_flags,
3978 edt, &cf->cinfo, node_children_grouper, stdout);
3979 return !ferror(stdout);
3983 case WRITE_JSON_RAW:
3985 g_assert_not_reached();
3986 if (print_details) {
3987 write_json_proto_tree(output_fields, print_dissections_none, TRUE,
3988 protocolfilter, protocolfilter_flags,
3989 edt, &cf->cinfo, node_children_grouper, stdout);
3990 return !ferror(stdout);
3995 write_ek_proto_tree(output_fields, print_summary, print_hex, protocolfilter,
3996 protocolfilter_flags, edt, &cf->cinfo, stdout);
3997 return !ferror(stdout);
4001 if (print_summary || print_details) {
4002 if (!print_line(print_stream, 0, ""))
4005 if (!print_hex_data(print_stream, edt))
4007 if (!print_line(print_stream, 0, separator))
4016 switch (output_action) {
4019 return print_finale(print_stream);
4023 write_pdml_finale(stdout);
4025 write_psml_finale(stdout);
4026 return !ferror(stdout);
4029 write_fields_finale(output_fields, stdout);
4030 return !ferror(stdout);
4033 case WRITE_JSON_RAW:
4034 write_json_finale(stdout);
4035 return !ferror(stdout);
4038 return !ferror(stdout);
4041 g_assert_not_reached();
4047 cf_close(capture_file *cf)
4049 g_free(cf->filename);
4053 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4058 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4062 /* The open succeeded. Fill in the information for this file. */
4064 cf->provider.wth = wth;
4065 cf->f_datalen = 0; /* not used, but set it anyway */
4067 /* Set the file name because we need it to set the follow stream filter.
4068 XXX - is that still true? We need it for other reasons, though,
4070 cf->filename = g_strdup(fname);
4072 /* Indicate whether it's a permanent or temporary file. */
4073 cf->is_tempfile = is_tempfile;
4075 /* No user changes yet. */
4076 cf->unsaved_changes = FALSE;
4078 cf->cd_t = wtap_file_type_subtype(cf->provider.wth);
4079 cf->open_type = type;
4081 cf->drops_known = FALSE;
4083 cf->snap = wtap_snapshot_length(cf->provider.wth);
4084 nstime_set_zero(&cf->elapsed_time);
4085 cf->provider.ref = NULL;
4086 cf->provider.prev_dis = NULL;
4087 cf->provider.prev_cap = NULL;
4089 /* Create new epan session for dissection. */
4090 epan_free(cf->epan);
4091 cf->epan = tshark_epan_new(cf);
4093 wtap_set_cb_new_ipv4(cf->provider.wth, add_ipv4_name);
4094 wtap_set_cb_new_ipv6(cf->provider.wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4099 cfile_open_failure_message("TShark", fname, *err, err_info);
4104 show_print_file_io_error(int err)
4109 cmdarg_err("Not all the packets could be printed because there is "
4110 "no space left on the file system.");
4115 cmdarg_err("Not all the packets could be printed because you are "
4116 "too close to, or over your disk quota.");
4121 cmdarg_err("An error occurred while printing packets: %s.",
4128 * General errors and warnings are reported with an console message
4132 failure_warning_message(const char *msg_format, va_list ap)
4134 fprintf(stderr, "tshark: ");
4135 vfprintf(stderr, msg_format, ap);
4136 fprintf(stderr, "\n");
4140 * Open/create errors are reported with an console message in TShark.
4143 open_failure_message(const char *filename, int err, gboolean for_writing)
4145 fprintf(stderr, "tshark: ");
4146 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4147 fprintf(stderr, "\n");
4151 * Read errors are reported with an console message in TShark.
4154 read_failure_message(const char *filename, int err)
4156 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4157 filename, g_strerror(err));
4161 * Write errors are reported with an console message in TShark.
4164 write_failure_message(const char *filename, int err)
4166 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4167 filename, g_strerror(err));
4170 static void reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
4172 if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
4175 fprintf(stderr, "resetting session.\n");
4177 epan_dissect_cleanup(edt);
4178 epan_free(cf->epan);
4180 cf->epan = tshark_epan_new(cf);
4181 epan_dissect_init(edt, cf->epan, tree, visual);
4186 * Report additional information for an error in command-line arguments.
4189 failure_message_cont(const char *msg_format, va_list ap)
4191 vfprintf(stderr, msg_format, ap);
4192 fprintf(stderr, "\n");
4196 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4201 * indent-tabs-mode: nil
4204 * vi: set shiftwidth=2 tabstop=8 expandtab:
4205 * :indentSize=2:tabSize=8:noTabs=true: