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/filesystem.h>
51 #include <wsutil/file_util.h>
52 #include <wsutil/privileges.h>
53 #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>
97 #include <epan/secrets.h>
99 #include "capture_opts.h"
101 #include "caputils/capture-pcap-util.h"
104 #include "caputils/capture_ifinfo.h"
106 #include "caputils/capture-wpcap.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)
143 #define LONGOPT_ELASTIC_MAPPING_FILTER (65536+1002)
146 #define tshark_debug(...) g_warning(__VA_ARGS__)
148 #define tshark_debug(...)
153 static guint32 cum_bytes;
154 static frame_data ref_frame;
155 static frame_data prev_dis_frame;
156 static frame_data prev_cap_frame;
158 static gboolean perform_two_pass_analysis;
159 static guint32 epan_auto_reset_count = 0;
160 static gboolean epan_auto_reset = FALSE;
163 * The way the packet decode is to be written.
166 WRITE_TEXT, /* summary or detail text */
167 WRITE_XML, /* PDML or PSML */
168 WRITE_FIELDS, /* User defined list of fields */
169 WRITE_JSON, /* JSON */
170 WRITE_JSON_RAW, /* JSON only raw hex */
171 WRITE_EK /* JSON bulk insert to Elasticsearch */
172 /* Add CSV and the like here */
175 static output_action_e output_action;
176 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
177 static gboolean print_packet_info; /* TRUE if we're to print packet information */
178 static gboolean print_summary; /* TRUE if we're to print packet summary information */
179 static gboolean print_details; /* TRUE if we're to print packet details information */
180 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
181 static gboolean line_buffered;
182 static gboolean really_quiet = FALSE;
183 static gchar* delimiter_char = " ";
184 static gboolean dissect_color = FALSE;
186 static print_format_e print_format = PR_FMT_TEXT;
187 static print_stream_t *print_stream = NULL;
189 static output_fields_t* output_fields = NULL;
190 static gchar **protocolfilter = NULL;
191 static pf_flags protocolfilter_flags = PF_NONE;
193 static gboolean no_duplicate_keys = FALSE;
194 static proto_node_children_grouper_func node_children_grouper = proto_node_group_children_by_unique;
196 /* The line separator used between packets, changeable via the -S option */
197 static const char *separator = "";
199 static gboolean prefs_loaded = FALSE;
203 * TRUE if we're to print packet counts to keep track of captured packets.
205 static gboolean print_packet_counts;
207 static capture_options global_capture_opts;
208 static capture_session global_capture_session;
209 static info_data_t global_info_data;
212 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
213 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
216 static gboolean capture(void);
217 static void report_counts(void);
219 static BOOL WINAPI capture_cleanup(DWORD);
221 static void capture_cleanup(int);
223 static void report_counts_siginfo(int);
227 #else /* HAVE_LIBPCAP */
229 static char *output_file_name;
231 #endif /* HAVE_LIBPCAP */
233 static void reset_epan_mem(capture_file *cf, epan_dissect_t *edt, gboolean tree, gboolean visual);
234 static gboolean process_cap_file(capture_file *, char *, int, gboolean, int, gint64);
235 static gboolean process_packet_single_pass(capture_file *cf,
236 epan_dissect_t *edt, gint64 offset, wtap_rec *rec,
237 const guchar *pd, guint tap_flags);
238 static void show_print_file_io_error(int err);
239 static gboolean write_preamble(capture_file *cf);
240 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
241 static gboolean write_finale(void);
243 static void failure_warning_message(const char *msg_format, va_list ap);
244 static void open_failure_message(const char *filename, int err,
245 gboolean for_writing);
246 static void read_failure_message(const char *filename, int err);
247 static void write_failure_message(const char *filename, int err);
248 static void failure_message_cont(const char *msg_format, va_list ap);
250 static GHashTable *output_only_tables = NULL;
253 const char *sstr; /* The short string */
254 const char *lstr; /* The long string */
258 string_compare(gconstpointer a, gconstpointer b)
260 return strcmp(((const struct string_elem *)a)->sstr,
261 ((const struct string_elem *)b)->sstr);
265 string_elem_print(gpointer data)
267 fprintf(stderr, " %s - %s\n",
268 ((struct string_elem *)data)->sstr,
269 ((struct string_elem *)data)->lstr);
273 list_capture_types(void) {
275 struct string_elem *captypes;
278 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
280 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
281 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
282 if (wtap_dump_can_open(i)) {
283 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
284 captypes[i].lstr = wtap_file_type_subtype_string(i);
285 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
288 g_slist_free_full(list, string_elem_print);
293 list_read_capture_types(void) {
295 struct string_elem *captypes;
297 const char *magic = "Magic-value-based";
298 const char *heuristic = "Heuristics-based";
300 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
301 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
303 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
304 for (i = 0; open_routines[i].name != NULL; i++) {
305 captypes[i].sstr = open_routines[i].name;
306 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
307 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
309 g_slist_free_full(list, string_elem_print);
314 print_usage(FILE *output)
316 fprintf(output, "\n");
317 fprintf(output, "Usage: tshark [options] ...\n");
318 fprintf(output, "\n");
321 fprintf(output, "Capture interface:\n");
322 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
323 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
324 #ifdef HAVE_PCAP_CREATE
325 fprintf(output, " -s <snaplen> packet snapshot length (def: appropriate maximum)\n");
327 fprintf(output, " -s <snaplen> packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE_STANDARD);
329 fprintf(output, " -p don't capture in promiscuous mode\n");
330 #ifdef HAVE_PCAP_CREATE
331 fprintf(output, " -I capture in monitor mode, if available\n");
333 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
334 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
336 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
337 fprintf(output, " --time-stamp-type <type> timestamp method for interface\n");
338 fprintf(output, " -D print list of interfaces and exit\n");
339 fprintf(output, " -L print list of link-layer types of iface and exit\n");
340 fprintf(output, " --list-time-stamp-types print list of timestamp types for iface and exit\n");
341 fprintf(output, "\n");
342 fprintf(output, "Capture stop conditions:\n");
343 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
344 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
345 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
346 fprintf(output, " files:NUM - stop after NUM files\n");
347 /*fprintf(output, "\n");*/
348 fprintf(output, "Capture output:\n");
349 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
350 fprintf(output, " interval:NUM - create time intervals of NUM secs\n");
351 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
352 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
353 #endif /* HAVE_LIBPCAP */
354 #ifdef HAVE_PCAP_REMOTE
355 fprintf(output, "RPCAP options:\n");
356 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
358 /*fprintf(output, "\n");*/
359 fprintf(output, "Input file:\n");
360 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
362 fprintf(output, "\n");
363 fprintf(output, "Processing:\n");
364 fprintf(output, " -2 perform a two-pass analysis\n");
365 fprintf(output, " -M <packet count> perform session auto reset\n");
366 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
367 fprintf(output, " (requires -2)\n");
368 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
369 fprintf(output, " syntax\n");
370 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
371 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtdv\"\n");
372 fprintf(output, " -d %s ...\n", DECODE_AS_ARG_TEMPLATE);
373 fprintf(output, " \"Decode As\", see the man page for details\n");
374 fprintf(output, " Example: tcp.port==8888,http\n");
375 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
376 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
377 fprintf(output, " --enable-protocol <proto_name>\n");
378 fprintf(output, " enable dissection of proto_name\n");
379 fprintf(output, " --disable-protocol <proto_name>\n");
380 fprintf(output, " disable dissection of proto_name\n");
381 fprintf(output, " --enable-heuristic <short_name>\n");
382 fprintf(output, " enable dissection of heuristic protocol\n");
383 fprintf(output, " --disable-heuristic <short_name>\n");
384 fprintf(output, " disable dissection of heuristic protocol\n");
386 /*fprintf(output, "\n");*/
387 fprintf(output, "Output:\n");
388 #ifdef PCAP_NG_DEFAULT
389 fprintf(output, " -w <outfile|-> write packets to a pcapng-format file named \"outfile\"\n");
391 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
393 fprintf(output, " (or to the standard output for \"-\")\n");
394 fprintf(output, " -C <config profile> start with specified configuration profile\n");
395 #ifdef PCAP_NG_DEFAULT
396 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
398 fprintf(output, " -F <output file type> set the output file type, default is pcap\n");
400 fprintf(output, " an empty \"-F\" option will list the file types\n");
401 fprintf(output, " -V add output of packet tree (Packet Details)\n");
402 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
403 fprintf(output, " separated\n");
404 fprintf(output, " -P print packet summary even when writing to a file\n");
405 fprintf(output, " -S <separator> the line separator to print between packets\n");
406 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
407 fprintf(output, " -T pdml|ps|psml|json|jsonraw|ek|tabs|text|fields|?\n");
408 fprintf(output, " format of text output (def: text)\n");
409 fprintf(output, " -j <protocolfilter> protocols layers filter if -T ek|pdml|json selected\n");
410 fprintf(output, " (e.g. \"ip ip.flags text\", filter does not expand child\n");
411 fprintf(output, " nodes, unless child is specified also in the filter)\n");
412 fprintf(output, " -J <protocolfilter> top level protocol filter if -T ek|pdml|json selected\n");
413 fprintf(output, " (e.g. \"http tcp\", filter which expands all child nodes)\n");
414 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
415 fprintf(output, " _ws.col.Info)\n");
416 fprintf(output, " this option can be repeated to print multiple fields\n");
417 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
418 fprintf(output, " bom=y|n print a UTF-8 BOM\n");
419 fprintf(output, " header=y|n switch headers on and off\n");
420 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
421 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
422 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
423 fprintf(output, " aggregator\n");
424 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
425 fprintf(output, " -t a|ad|d|dd|e|r|u|ud|? output format of time stamps (def: r: rel. to first)\n");
426 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
427 fprintf(output, " -l flush standard output after each packet\n");
428 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
429 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
430 fprintf(output, " -g enable group read access on the output file(s)\n");
431 fprintf(output, " -W n Save extra information in the file, if supported.\n");
432 fprintf(output, " n = write network address resolution information\n");
433 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
434 fprintf(output, " -U tap_name PDUs export mode, see the man page for details\n");
435 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
436 fprintf(output, " --capture-comment <comment>\n");
437 fprintf(output, " add a capture comment to the newly created\n");
438 fprintf(output, " output file (only for pcapng)\n");
439 fprintf(output, " --export-objects <protocol>,<destdir> save exported objects for a protocol to\n");
440 fprintf(output, " a directory named \"destdir\"\n");
441 fprintf(output, " --color color output text similarly to the Wireshark GUI,\n");
442 fprintf(output, " requires a terminal with 24-bit color support\n");
443 fprintf(output, " Also supplies color attributes to pdml and psml formats\n");
444 fprintf(output, " (Note that attributes are nonstandard)\n");
445 fprintf(output, " --no-duplicate-keys If -T json is specified, merge duplicate keys in an object\n");
446 fprintf(output, " into a single key with as value a json array containing all\n");
447 fprintf(output, " values\n");
448 fprintf(output, " --elastic-mapping-filter <protocols> If -G elastic-mapping is specified, put only the\n");
449 fprintf(output, " specified protocols within the mapping file\n");
451 fprintf(output, "\n");
452 fprintf(output, "Miscellaneous:\n");
453 fprintf(output, " -h display this help and exit\n");
454 fprintf(output, " -v display version info and exit\n");
455 fprintf(output, " -o <name>:<value> ... override preference setting\n");
456 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
457 fprintf(output, " -G [report] dump one of several available reports and exit\n");
458 fprintf(output, " default report=\"fields\"\n");
459 fprintf(output, " use \"-G help\" for more help\n");
461 fprintf(output, "\n");
462 fprintf(output, "Dumpcap can benefit from an enabled BPF JIT compiler if available.\n");
463 fprintf(output, "You might want to enable it by executing:\n");
464 fprintf(output, " \"echo 1 > /proc/sys/net/core/bpf_jit_enable\"\n");
465 fprintf(output, "Note that this can make your system less secure!\n");
471 glossary_option_help(void)
477 fprintf(output, "%s\n", get_appname_and_version());
479 fprintf(output, "\n");
480 fprintf(output, "Usage: tshark -G [report]\n");
481 fprintf(output, "\n");
482 fprintf(output, "Glossary table reports:\n");
483 fprintf(output, " -G column-formats dump column format codes and exit\n");
484 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
485 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
486 fprintf(output, " -G elastic-mapping dump ElasticSearch mapping file\n");
487 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
488 fprintf(output, " -G fields dump fields glossary and exit\n");
489 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
490 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
491 fprintf(output, " -G plugins dump installed plugins and exit\n");
492 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
493 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
494 fprintf(output, "\n");
495 fprintf(output, "Preference reports:\n");
496 fprintf(output, " -G currentprefs dump current preferences and exit\n");
497 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
498 fprintf(output, " -G folders dump about:folders\n");
499 fprintf(output, "\n");
503 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
504 const gchar *message, gpointer user_data)
506 /* ignore log message, if log_level isn't interesting based
507 upon the console log preferences.
508 If the preferences haven't been loaded yet, display the
511 The default console_log_level preference value is such that only
512 ERROR, CRITICAL and WARNING level messages are processed;
513 MESSAGE, INFO and DEBUG level messages are ignored.
515 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
516 ERROR and CRITICAL level messages so the current code is a behavioral
517 change. The current behavior is the same as in Wireshark.
519 if (prefs_loaded && (log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0) {
523 g_log_default_handler(log_domain, log_level, message, user_data);
528 print_current_user(void) {
529 gchar *cur_user, *cur_group;
531 if (started_with_special_privs()) {
532 cur_user = get_cur_username();
533 cur_group = get_cur_groupname();
534 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
535 cur_user, cur_group);
538 if (running_with_special_privs()) {
539 fprintf(stderr, " This could be dangerous.");
541 fprintf(stderr, "\n");
546 get_tshark_compiled_version_info(GString *str)
548 /* Capture libraries */
549 get_compiled_caplibs_version(str);
553 get_tshark_runtime_version_info(GString *str)
556 /* Capture libraries */
557 g_string_append(str, ", ");
558 get_runtime_caplibs_version(str);
561 /* stuff used by libwireshark */
562 epan_get_runtime_version_info(str);
568 const char *constpath;
576 * Fetching the "File" dialogs folder not implemented.
577 * This is arguably just a pwd for a ui/cli .
581 printf("%-21s\t%s\n", "Temp:", g_get_tmp_dir());
584 path = get_persconffile_path("", FALSE);
585 printf("%-21s\t%s\n", "Personal configuration:", path);
589 constpath = get_datafile_dir();
590 if (constpath != NULL) {
591 printf("%-21s\t%s\n", "Global configuration:", constpath);
595 constpath = get_systemfile_dir();
596 printf("%-21s\t%s\n", "System:", constpath);
599 constpath = get_progfile_dir();
600 printf("%-21s\t%s\n", "Program:", constpath);
604 printf("%-21s\t%s\n", "Personal Plugins:", get_plugins_pers_dir_with_version());
607 printf("%-21s\t%s\n", "Global Plugins:", get_plugins_dir_with_version());
611 /* pers lua plugins */
612 printf("%-21s\t%s\n", "Personal Lua Plugins:", get_plugins_pers_dir());
614 /* global lua plugins */
615 printf("%-21s\t%s\n", "Global Lua Plugins:", get_plugins_dir());
619 constpath = get_extcap_dir();
621 resultArray = g_strsplit(constpath, G_SEARCHPATH_SEPARATOR_S, 10);
622 for(i = 0; resultArray[i]; i++)
623 printf("%-21s\t%s\n", "Extcap path:", g_strstrip(resultArray[i]));
625 g_strfreev(resultArray);
628 path = maxmind_db_get_paths();
630 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 10);
632 for(i = 0; resultArray[i]; i++)
633 printf("%-21s\t%s\n", "MaxMind database path:", g_strstrip(resultArray[i]));
635 g_strfreev(resultArray);
640 path = oid_get_default_mib_path();
642 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 20);
644 for(i = 0; resultArray[i]; i++)
645 printf("%-21s\t%s\n", "MIB/PIB path:", g_strstrip(resultArray[i]));
647 g_strfreev(resultArray);
654 must_do_dissection(dfilter_t *rfcode, dfilter_t *dfcode,
655 gchar *volatile pdu_export_arg)
657 /* We have to dissect each packet if:
659 we're printing information about each packet;
661 we're using a read filter on the packets;
663 we're using a display filter on the packets;
665 we're exporting PDUs;
667 we're using any taps that need dissection. */
668 return print_packet_info || rfcode || dfcode || pdu_export_arg ||
669 tap_listeners_require_dissection() || dissect_color;
673 real_main(int argc, char *argv[])
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},
686 {"elastic-mapping-filter", required_argument, NULL, LONGOPT_ELASTIC_MAPPING_FILTER},
689 gboolean arg_error = FALSE;
697 volatile gboolean success;
698 volatile int exit_status = EXIT_SUCCESS;
700 int caps_queries = 0;
701 gboolean start_capture = FALSE;
705 gboolean capture_option_specified = FALSE;
706 int max_packet_count = 0;
708 gboolean quiet = FALSE;
709 #ifdef PCAP_NG_DEFAULT
710 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
712 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
714 volatile gboolean out_file_name_res = FALSE;
715 volatile int in_file_type = WTAP_TYPE_AUTO;
716 gchar *volatile cf_name = NULL;
717 gchar *rfilter = NULL;
718 gchar *dfilter = NULL;
719 #ifdef HAVE_PCAP_OPEN_DEAD
720 struct bpf_program fcode;
722 dfilter_t *rfcode = NULL;
723 dfilter_t *dfcode = NULL;
727 gchar *output_only = NULL;
728 gchar *volatile pdu_export_arg = NULL;
729 char *volatile exp_pdu_filename = NULL;
730 exp_pdu_t exp_pdu_tap_data;
731 const gchar* elastic_mapping_filter = NULL;
734 * The leading + ensures that getopt_long() does not permute the argv[]
737 * We have to make sure that the first getopt_long() preserves the content
738 * of argv[] for the subsequent getopt_long() call.
740 * We use getopt_long() in both cases to ensure that we're using a routine
741 * whose permutation behavior we can control in the same fashion on all
742 * platforms, and so that, if we ever need to process a long argument before
743 * doing further initialization, we can do so.
745 * Glibc and Solaris libc document that a leading + disables permutation
746 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
747 * and macOS don't document it, but do so anyway.
749 * We do *not* use a leading - because the behavior of a leading - is
750 * platform-dependent.
752 #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:"
754 static const char optstring[] = OPTSTRING;
756 tshark_debug("tshark started with %d args", argc);
758 /* Set the C-language locale to the native environment. */
759 setlocale(LC_ALL, "");
761 cmdarg_err_init(failure_warning_message, failure_message_cont);
764 create_app_running_mutex();
768 * Get credential information for later use, and drop privileges
769 * before doing anything else.
770 * Let the user know if anything happened.
772 init_process_policies();
773 relinquish_special_privs_perm();
774 print_current_user();
777 * Attempt to get the pathname of the directory containing the
780 init_progfile_dir_error = init_progfile_dir(argv[0]);
781 if (init_progfile_dir_error != NULL) {
783 "tshark: Can't get pathname of directory containing the tshark program: %s.\n"
784 "It won't be possible to capture traffic.\n"
785 "Report this to the Wireshark developers.",
786 init_progfile_dir_error);
787 g_free(init_progfile_dir_error);
790 initialize_funnel_ops();
793 ws_init_dll_search_path();
795 /* Load wpcap if possible. Do this before collecting the run-time version information */
797 #endif /* HAVE_LIBPCAP */
800 /* Initialize the version information. */
801 ws_init_version_info("TShark (Wireshark)", get_tshark_compiled_version_info,
802 epan_get_compiled_version_info,
803 get_tshark_runtime_version_info);
805 /* Fail sometimes. Useful for testing fuzz scripts. */
806 /* if (g_random_int_range(0, 100) < 5) abort(); */
809 * In order to have the -X opts assigned before the wslua machine starts
810 * we need to call getopt_long before epan_init() gets called.
812 * In order to handle, for example, -o options, we also need to call it
813 * *after* epan_init() gets called, so that the dissectors have had a
814 * chance to register their preferences.
816 * XXX - can we do this all with one getopt_long() call, saving the
817 * arguments we can't handle until after initializing libwireshark,
818 * and then process them after initializing libwireshark?
822 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
824 case 'C': /* Configuration Profile */
825 if (profile_exists (optarg, FALSE)) {
826 set_profile_name (optarg);
828 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
829 exit_status = INVALID_OPTION;
833 case 'P': /* Print packet summary info even when writing to a file */
834 print_packet_info = TRUE;
835 print_summary = TRUE;
837 case 'O': /* Only output these protocols */
838 output_only = g_strdup(optarg);
840 case 'V': /* Verbose */
841 print_details = TRUE;
842 print_packet_info = TRUE;
844 case 'x': /* Print packet data in hex (and ASCII) */
846 /* The user asked for hex output, so let's ensure they get it,
847 * even if they're writing to a file.
849 print_packet_info = TRUE;
854 case LONGOPT_ELASTIC_MAPPING_FILTER:
855 elastic_mapping_filter = optarg;
862 /** Send All g_log messages to our own handler **/
866 G_LOG_LEVEL_CRITICAL|
871 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
873 g_log_set_handler(NULL,
874 (GLogLevelFlags)log_flags,
875 tshark_log_handler, NULL /* user_data */);
876 g_log_set_handler(LOG_DOMAIN_MAIN,
877 (GLogLevelFlags)log_flags,
878 tshark_log_handler, NULL /* user_data */);
881 g_log_set_handler(LOG_DOMAIN_CAPTURE,
882 (GLogLevelFlags)log_flags,
883 tshark_log_handler, NULL /* user_data */);
884 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
885 (GLogLevelFlags)log_flags,
886 tshark_log_handler, NULL /* user_data */);
889 init_report_message(failure_warning_message, failure_warning_message,
890 open_failure_message, read_failure_message,
891 write_failure_message);
894 capture_opts_init(&global_capture_opts);
895 capture_session_init(&global_capture_session, &cfile);
898 timestamp_set_type(TS_RELATIVE);
899 timestamp_set_precision(TS_PREC_AUTO);
900 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
904 /* Register all dissectors; we must do this before checking for the
905 "-G" flag, as the "-G" flag dumps information registered by the
906 dissectors, and we must do it before we read the preferences, in
907 case any dissectors register preferences. */
908 if (!epan_init(NULL, NULL, TRUE)) {
909 exit_status = INIT_FAILED;
913 /* Register all tap listeners; we do this before we parse the arguments,
914 as the "-z" argument can specify a registered tap. */
916 /* we register the plugin taps before the other taps because
917 stats_tree taps plugins will be registered as tap listeners
918 by stats_tree_stat.c and need to registered before that */
920 register_all_plugin_tap_listeners();
922 extcap_register_preferences();
923 /* Register all tap listeners. */
924 for (tap_reg_t *t = tap_reg_listener; t->cb_func != NULL; t++) {
927 conversation_table_set_gui_info(init_iousers);
928 hostlist_table_set_gui_info(init_hostlists);
929 srt_table_iterate_tables(register_srt_tables, NULL);
930 rtd_table_iterate_tables(register_rtd_tables, NULL);
931 stat_tap_iterate_tables(register_simple_stat_tables, NULL);
933 /* If invoked with the "-G" flag, we dump out information based on
934 the argument to the "-G" flag; if no argument is specified,
935 for backwards compatibility we dump out a glossary of display
938 XXX - we do this here, for now, to support "-G" with no arguments.
939 If none of our build or other processes uses "-G" with no arguments,
940 we can just process it with the other arguments. */
941 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
942 proto_initialize_all_prefixes();
945 proto_registrar_dump_fields();
947 if (strcmp(argv[2], "column-formats") == 0)
948 column_dump_column_formats();
949 else if (strcmp(argv[2], "currentprefs") == 0) {
950 epan_load_settings();
953 else if (strcmp(argv[2], "decodes") == 0)
954 dissector_dump_decodes();
955 else if (strcmp(argv[2], "defaultprefs") == 0)
957 else if (strcmp(argv[2], "dissector-tables") == 0)
958 dissector_dump_dissector_tables();
959 else if (strcmp(argv[2], "elastic-mapping") == 0)
960 proto_registrar_dump_elastic(elastic_mapping_filter);
961 else if (strcmp(argv[2], "fieldcount") == 0) {
962 /* return value for the test suite */
963 exit_status = proto_registrar_dump_fieldcount();
965 } else if (strcmp(argv[2], "fields") == 0)
966 proto_registrar_dump_fields();
967 else if (strcmp(argv[2], "folders") == 0) {
968 epan_load_settings();
970 } else if (strcmp(argv[2], "ftypes") == 0)
971 proto_registrar_dump_ftypes();
972 else if (strcmp(argv[2], "heuristic-decodes") == 0)
973 dissector_dump_heur_decodes();
974 else if (strcmp(argv[2], "plugins") == 0) {
979 wslua_plugins_dump_all();
982 else if (strcmp(argv[2], "protocols") == 0)
983 proto_registrar_dump_protocols();
984 else if (strcmp(argv[2], "values") == 0)
985 proto_registrar_dump_values();
986 else if (strcmp(argv[2], "help") == 0)
987 glossary_option_help();
988 /* These are supported only for backwards compatibility and may or may not work
989 * for a given user in a given directory on a given operating system with a given
990 * command-line interpreter.
992 else if (strcmp(argv[2], "?") == 0)
993 glossary_option_help();
994 else if (strcmp(argv[2], "-?") == 0)
995 glossary_option_help();
997 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G help for more help.", argv[2]);
998 exit_status = INVALID_OPTION;
1002 exit_status = EXIT_SUCCESS;
1006 tshark_debug("tshark reading settings");
1008 /* Load libwireshark settings from the current profile. */
1009 prefs_p = epan_load_settings();
1010 prefs_loaded = TRUE;
1012 read_filter_list(CFILTER_LIST);
1014 cap_file_init(&cfile);
1016 /* Print format defaults to this. */
1017 print_format = PR_FMT_TEXT;
1018 delimiter_char = " ";
1020 output_fields = output_fields_new();
1023 * To reset the options parser, set optreset to 1 on platforms that
1024 * have optreset (documented in *BSD and macOS, apparently present but
1025 * not documented in Solaris - the Illumos repository seems to
1026 * suggest that the first Solaris getopt_long(), at least as of 2004,
1027 * was based on the NetBSD one, it had optreset) and set optind to 1,
1028 * and set optind to 0 otherwise (documented as working in the GNU
1029 * getopt_long(). Setting optind to 0 didn't originally work in the
1030 * NetBSD one, but that was added later - we don't want to depend on
1031 * it if we have optreset).
1033 * Also reset opterr to 1, so that error messages are printed by
1036 #ifdef HAVE_OPTRESET
1044 /* Now get our args */
1045 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1047 case '2': /* Perform two pass analysis */
1048 if(epan_auto_reset){
1049 cmdarg_err("-2 does not support auto session reset.");
1052 perform_two_pass_analysis = TRUE;
1055 if(perform_two_pass_analysis){
1056 cmdarg_err("-M does not support two pass analysis.");
1059 epan_auto_reset_count = get_positive_int(optarg, "epan reset count");
1060 epan_auto_reset = TRUE;
1062 case 'a': /* autostop criteria */
1063 case 'b': /* Ringbuffer option */
1064 case 'c': /* Capture x packets */
1065 case 'f': /* capture filter */
1066 case 'g': /* enable group read access on file(s) */
1067 case 'i': /* Use interface x */
1068 case LONGOPT_SET_TSTAMP_TYPE: /* Set capture timestamp type */
1069 case 'p': /* Don't capture in promiscuous mode */
1070 #ifdef HAVE_PCAP_REMOTE
1071 case 'A': /* Authentication */
1073 #ifdef HAVE_PCAP_CREATE
1074 case 'I': /* Capture in monitor mode, if available */
1076 case 's': /* Set the snapshot (capture) length */
1077 case 'w': /* Write to capture file x */
1078 case 'y': /* Set the pcap data link type */
1079 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1080 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1081 case 'B': /* Buffer size */
1084 exit_status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1085 if (exit_status != 0) {
1091 * Output file name, if we're reading a file and writing to another
1094 output_file_name = g_strdup(optarg);
1095 } else if (opt == 'c') {
1096 max_packet_count = get_positive_int(optarg, "packet count");
1098 capture_option_specified = TRUE;
1104 /* already processed; just ignore it now */
1106 case 'D': /* Print a list of capture devices and exit */
1108 if_list = capture_interface_list(&err, &err_str,NULL);
1109 if (if_list == NULL) {
1111 cmdarg_err("There are no interfaces on which a capture can be done");
1113 cmdarg_err("%s", err_str);
1116 exit_status = INVALID_INTERFACE;
1119 capture_opts_print_interfaces(if_list);
1120 free_interface_list(if_list);
1121 exit_status = EXIT_SUCCESS;
1124 capture_option_specified = TRUE;
1130 output_fields_add(output_fields, optarg);
1134 if (!output_fields_set_option(output_fields, optarg)) {
1135 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1136 output_fields_list_options(stderr);
1137 exit_status = INVALID_OPTION;
1142 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1143 if (out_file_type < 0) {
1144 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1145 list_capture_types();
1146 exit_status = INVALID_OPTION;
1151 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1154 protocolfilter_flags = PF_INCLUDE_CHILDREN;
1155 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1157 case 'W': /* Select extra information to save in our capture file */
1158 /* This is patterned after the -N flag which may not be the best idea. */
1159 if (strchr(optarg, 'n')) {
1160 out_file_name_res = TRUE;
1162 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1163 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1164 exit_status = INVALID_OPTION;
1168 case 'H': /* Read address to name mappings from a hosts file */
1169 if (! add_hosts_file(optarg))
1171 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1172 exit_status = INVALID_OPTION;
1175 out_file_name_res = TRUE;
1178 case 'h': /* Print help and exit */
1179 show_help_header("Dump and analyze network traffic.");
1180 print_usage(stdout);
1181 exit_status = EXIT_SUCCESS;
1184 case 'l': /* "Line-buffer" standard output */
1185 /* The ANSI C standard does not appear to *require* that a line-buffered
1186 stream be flushed to the host environment whenever a newline is
1187 written, it just says that, on such a stream, characters "are
1188 intended to be transmitted to or from the host environment as a
1189 block when a new-line character is encountered".
1191 The Visual C++ 6.0 C implementation doesn't do what is intended;
1192 even if you set a stream to be line-buffered, it still doesn't
1193 flush the buffer at the end of every line.
1195 The whole reason for the "-l" flag in either tcpdump or TShark
1196 is to allow the output of a live capture to be piped to a program
1197 or script and to have that script see the information for the
1198 packet as soon as it's printed, rather than having to wait until
1199 a standard I/O buffer fills up.
1201 So, if the "-l" flag is specified, we flush the standard output
1202 at the end of a packet. This will do the right thing if we're
1203 printing packet summary lines, and, as we print the entire protocol
1204 tree for a single packet without waiting for anything to happen,
1205 it should be as good as line-buffered mode if we're printing
1206 protocol trees - arguably even better, as it may do fewer
1208 line_buffered = TRUE;
1210 case 'L': /* Print list of link-layer types and exit */
1212 caps_queries |= CAPS_QUERY_LINK_TYPES;
1214 capture_option_specified = TRUE;
1218 case LONGOPT_LIST_TSTAMP_TYPES: /* List possible timestamp types */
1220 caps_queries |= CAPS_QUERY_TIMESTAMP_TYPES;
1222 capture_option_specified = TRUE;
1226 case 'o': /* Override preference from command line */
1228 char *errmsg = NULL;
1230 switch (prefs_set_pref(optarg, &errmsg)) {
1235 case PREFS_SET_SYNTAX_ERR:
1236 cmdarg_err("Invalid -o flag \"%s\"%s%s", optarg,
1237 errmsg ? ": " : "", errmsg ? errmsg : "");
1239 exit_status = INVALID_OPTION;
1243 case PREFS_SET_NO_SUCH_PREF:
1244 case PREFS_SET_OBSOLETE:
1245 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1246 exit_status = INVALID_OPTION;
1252 case 'q': /* Quiet */
1255 case 'Q': /* Really quiet */
1257 really_quiet = TRUE;
1259 case 'r': /* Read capture file x */
1260 cf_name = g_strdup(optarg);
1262 case 'R': /* Read file filter */
1266 /* already processed; just ignore it now */
1268 case 'S': /* Set the line Separator to be printed between packets */
1271 case 'T': /* printing Type */
1272 print_packet_info = TRUE;
1273 if (strcmp(optarg, "text") == 0) {
1274 output_action = WRITE_TEXT;
1275 print_format = PR_FMT_TEXT;
1276 } else if (strcmp(optarg, "tabs") == 0) {
1277 output_action = WRITE_TEXT;
1278 print_format = PR_FMT_TEXT;
1279 delimiter_char = "\t";
1280 } else if (strcmp(optarg, "ps") == 0) {
1281 output_action = WRITE_TEXT;
1282 print_format = PR_FMT_PS;
1283 } else if (strcmp(optarg, "pdml") == 0) {
1284 output_action = WRITE_XML;
1285 print_details = TRUE; /* Need details */
1286 print_summary = FALSE; /* Don't allow summary */
1287 } else if (strcmp(optarg, "psml") == 0) {
1288 output_action = WRITE_XML;
1289 print_details = FALSE; /* Don't allow details */
1290 print_summary = TRUE; /* Need summary */
1291 } else if (strcmp(optarg, "fields") == 0) {
1292 output_action = WRITE_FIELDS;
1293 print_details = TRUE; /* Need full tree info */
1294 print_summary = FALSE; /* Don't allow summary */
1295 } else if (strcmp(optarg, "json") == 0) {
1296 output_action = WRITE_JSON;
1297 print_details = TRUE; /* Need details */
1298 print_summary = FALSE; /* Don't allow summary */
1299 } else if (strcmp(optarg, "ek") == 0) {
1300 output_action = WRITE_EK;
1302 print_details = TRUE;
1303 } else if (strcmp(optarg, "jsonraw") == 0) {
1304 output_action = WRITE_JSON_RAW;
1305 print_details = TRUE; /* Need details */
1306 print_summary = FALSE; /* Don't allow summary */
1309 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1310 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1311 "\t specified by the -E option.\n"
1312 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1313 "\t details of a decoded packet. This information is equivalent to\n"
1314 "\t the packet details printed with the -V flag.\n"
1315 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1316 "\t the packets, or a multi-line view of the details of each of\n"
1317 "\t the packets, depending on whether the -V flag was specified.\n"
1318 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1319 "\t summary information of a decoded packet. This information is\n"
1320 "\t equivalent to the information shown in the one-line summary\n"
1321 "\t printed by default.\n"
1322 "\t\"json\" Packet Summary, an JSON-based format for the details\n"
1323 "\t summary information of a decoded packet. This information is \n"
1324 "\t equivalent to the packet details printed with the -V flag.\n"
1325 "\t\"jsonraw\" Packet Details, a JSON-based format for machine parsing\n"
1326 "\t including only raw hex decoded fields (same as -T json -x but\n"
1327 "\t without text decoding, only raw fields included). \n"
1328 "\t\"ek\" Packet Details, an EK JSON-based format for the bulk insert \n"
1329 "\t into elastic search cluster. This information is \n"
1330 "\t equivalent to the packet details printed with the -V flag.\n"
1331 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1332 "\t packets, or a multi-line view of the details of each of the\n"
1333 "\t packets, depending on whether the -V flag was specified.\n"
1334 "\t This is the default.\n"
1335 "\t\"tabs\" Similar to the text report except that each column of the\n"
1336 "\t human-readable one-line summary is delimited with an ASCII\n"
1337 "\t horizontal tab character.");
1338 exit_status = INVALID_OPTION;
1342 case 'U': /* Export PDUs to file */
1344 GSList *export_pdu_tap_name_list = NULL;
1347 cmdarg_err("A tap name is required. Valid names are:");
1348 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)) {
1349 cmdarg_err("%s\n", (const char*)(export_pdu_tap_name_list->data));
1351 exit_status = INVALID_OPTION;
1354 pdu_export_arg = g_strdup(optarg);
1357 case 'v': /* Show version and exit */
1359 /* We don't really have to cleanup here, but it's a convenient way to test
1360 * start-up and shut-down of the epan library without any UI-specific
1361 * cruft getting in the way. Makes the results of running
1362 * $ ./tools/valgrind-wireshark -n
1363 * much more useful. */
1366 exit_status = EXIT_SUCCESS;
1368 case 'O': /* Only output these protocols */
1369 /* already processed; just ignore it now */
1371 case 'V': /* Verbose */
1372 /* already processed; just ignore it now */
1374 case 'x': /* Print packet data in hex (and ASCII) */
1375 /* already processed; just ignore it now */
1378 /* already processed; just ignore it now */
1384 /* We won't call the init function for the stat this soon
1385 as it would disallow MATE's fields (which are registered
1386 by the preferences set callback) from being used as
1387 part of a tap filter. Instead, we just add the argument
1388 to a list of stat arguments. */
1389 if (strcmp("help", optarg) == 0) {
1390 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1391 list_stat_cmd_args();
1392 exit_status = EXIT_SUCCESS;
1395 if (!process_stat_cmd_arg(optarg)) {
1396 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1397 list_stat_cmd_args();
1398 exit_status = INVALID_OPTION;
1402 case 'd': /* Decode as rule */
1403 case 'K': /* Kerberos keytab file */
1404 case 'n': /* No name resolution */
1405 case 'N': /* Select what types of addresses/port #s to resolve */
1406 case 't': /* Time stamp type */
1407 case 'u': /* Seconds type */
1408 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1409 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1410 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1411 case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
1412 if (!dissect_opts_handle_opt(opt, optarg)) {
1413 exit_status = INVALID_OPTION;
1417 case LONGOPT_EXPORT_OBJECTS: /* --export-objects */
1418 if (strcmp("help", optarg) == 0) {
1419 fprintf(stderr, "tshark: The available export object types for the \"--export-objects\" option are:\n");
1420 eo_list_object_types();
1421 exit_status = EXIT_SUCCESS;
1424 if (!eo_tap_opt_add(optarg)) {
1425 exit_status = INVALID_OPTION;
1429 case LONGOPT_COLOR: /* print in color where appropriate */
1430 dissect_color = TRUE;
1432 case LONGOPT_NO_DUPLICATE_KEYS:
1433 no_duplicate_keys = TRUE;
1434 node_children_grouper = proto_node_group_children_by_json_key;
1437 case '?': /* Bad flag - print usage message */
1440 list_capture_types();
1443 print_usage(stderr);
1445 exit_status = INVALID_OPTION;
1452 * Print packet summary information is the default if neither -V or -x
1453 * were specified. Note that this is new behavior, which allows for the
1454 * possibility of printing only hex/ascii output without necessarily
1455 * requiring that either the summary or details be printed too.
1457 if (!print_summary && !print_details && !print_hex)
1458 print_summary = TRUE;
1460 if (no_duplicate_keys && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW) {
1461 cmdarg_err("--no-duplicate-keys can only be used with \"-T json\" and \"-T jsonraw\"");
1462 exit_status = INVALID_OPTION;
1466 /* If we specified output fields, but not the output field type... */
1467 if ((WRITE_FIELDS != output_action && WRITE_XML != output_action && WRITE_JSON != output_action && WRITE_EK != output_action) && 0 != output_fields_num_fields(output_fields)) {
1468 cmdarg_err("Output fields were specified with \"-e\", "
1469 "but \"-Tek, -Tfields, -Tjson or -Tpdml\" was not specified.");
1470 exit_status = INVALID_OPTION;
1472 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1473 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1474 "specified with \"-e\".");
1476 exit_status = INVALID_OPTION;
1480 if (dissect_color) {
1481 if (!color_filters_init(&err_msg, NULL)) {
1482 fprintf(stderr, "%s\n", err_msg);
1487 /* If no capture filter or display filter has been specified, and there are
1488 still command-line arguments, treat them as the tokens of a capture
1489 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1490 flag was specified. */
1491 if (optind < argc) {
1492 if (cf_name != NULL) {
1493 if (dfilter != NULL) {
1494 cmdarg_err("Display filters were specified both with \"-d\" "
1495 "and with additional command-line arguments.");
1496 exit_status = INVALID_OPTION;
1499 dfilter = get_args_as_string(argc, argv, optind);
1504 if (global_capture_opts.default_options.cfilter) {
1505 cmdarg_err("A default capture filter was specified both with \"-f\""
1506 " and with additional command-line arguments.");
1507 exit_status = INVALID_OPTION;
1510 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1511 interface_options *interface_opts;
1512 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
1513 if (interface_opts->cfilter == NULL) {
1514 interface_opts->cfilter = get_args_as_string(argc, argv, optind);
1516 cmdarg_err("A capture filter was specified both with \"-f\""
1517 " and with additional command-line arguments.");
1518 exit_status = INVALID_OPTION;
1522 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1524 capture_option_specified = TRUE;
1530 if (!global_capture_opts.saving_to_file) {
1532 if (!output_file_name) {
1534 /* We're not saving the capture to a file; if "-q" wasn't specified,
1535 we should print packet information */
1537 print_packet_info = TRUE;
1540 const char *save_file = global_capture_opts.save_file;
1542 const char *save_file = output_file_name;
1544 /* We're saving to a file; if we're writing to the standard output.
1545 and we'll also be writing dissected packets to the standard
1546 output, reject the request. At best, we could redirect that
1547 to the standard error; we *can't* write both to the standard
1548 output and have either of them be useful. */
1549 if (strcmp(save_file, "-") == 0 && print_packet_info) {
1550 cmdarg_err("You can't write both raw packet data and dissected packets"
1551 " to the standard output.");
1552 exit_status = INVALID_OPTION;
1557 #ifndef HAVE_LIBPCAP
1558 if (capture_option_specified)
1559 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1562 print_usage(stderr);
1563 exit_status = INVALID_OPTION;
1568 if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
1569 cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
1570 exit_status = INVALID_OPTION;
1575 if (output_only != NULL) {
1578 if (!print_details) {
1579 cmdarg_err("-O requires -V");
1580 exit_status = INVALID_OPTION;
1584 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1585 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1586 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1590 if (rfilter != NULL && !perform_two_pass_analysis) {
1591 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1592 exit_status = INVALID_OPTION;
1598 /* We're supposed to list the link-layer/timestamp types for an interface;
1599 did the user also specify a capture file to be read? */
1601 /* Yes - that's bogus. */
1602 cmdarg_err("You can't specify %s and a capture file to be read.",
1603 caps_queries & CAPS_QUERY_LINK_TYPES ? "-L" : "--list-time-stamp-types");
1604 exit_status = INVALID_OPTION;
1607 /* No - did they specify a ring buffer option? */
1608 if (global_capture_opts.multi_files_on) {
1609 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1610 exit_status = INVALID_OPTION;
1616 * "-r" was specified, so we're reading a capture file.
1617 * Capture options don't apply here.
1620 /* We don't support capture filters when reading from a capture file
1621 (the BPF compiler doesn't support all link-layer types that we
1622 support in capture files we read). */
1623 if (global_capture_opts.default_options.cfilter) {
1624 cmdarg_err("Only read filters, not capture filters, "
1625 "can be specified when reading a capture file.");
1626 exit_status = INVALID_OPTION;
1629 if (global_capture_opts.multi_files_on) {
1630 cmdarg_err("Multiple capture files requested, but "
1631 "a capture isn't being done.");
1632 exit_status = INVALID_OPTION;
1635 if (global_capture_opts.has_file_duration) {
1636 cmdarg_err("Switching capture files after a time period was specified, but "
1637 "a capture isn't being done.");
1638 exit_status = INVALID_OPTION;
1641 if (global_capture_opts.has_file_interval) {
1642 cmdarg_err("Switching capture files after a time interval was specified, but "
1643 "a capture isn't being done.");
1644 exit_status = INVALID_OPTION;
1647 if (global_capture_opts.has_ring_num_files) {
1648 cmdarg_err("A ring buffer of capture files was specified, but "
1649 "a capture isn't being done.");
1650 exit_status = INVALID_OPTION;
1653 if (global_capture_opts.has_autostop_files) {
1654 cmdarg_err("A maximum number of capture files was specified, but "
1655 "a capture isn't being done.");
1656 exit_status = INVALID_OPTION;
1659 if (global_capture_opts.capture_comment) {
1660 cmdarg_err("A capture comment was specified, but "
1661 "a capture isn't being done.\nThere's no support for adding "
1662 "a capture comment to an existing capture file.");
1663 exit_status = INVALID_OPTION;
1667 /* Note: TShark now allows the restriction of a _read_ file by packet count
1668 * and byte count as well as a write file. Other autostop options remain valid
1669 * only for a write file.
1671 if (global_capture_opts.has_autostop_duration) {
1672 cmdarg_err("A maximum capture time was specified, but "
1673 "a capture isn't being done.");
1674 exit_status = INVALID_OPTION;
1679 * "-r" wasn't specified, so we're doing a live capture.
1681 if (perform_two_pass_analysis) {
1682 /* Two-pass analysis doesn't work with live capture since it requires us
1683 * to buffer packets until we've read all of them, but a live capture
1684 * has no useful/meaningful definition of "all" */
1685 cmdarg_err("Live captures do not support two-pass analysis.");
1686 exit_status = INVALID_OPTION;
1690 if (global_capture_opts.saving_to_file) {
1691 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1693 /* When capturing, we only support writing pcap or pcapng format. */
1694 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1695 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1696 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1697 exit_status = INVALID_OPTION;
1700 if (global_capture_opts.capture_comment &&
1701 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1702 cmdarg_err("A capture comment can only be written to a pcapng file.");
1703 exit_status = INVALID_OPTION;
1706 if (global_capture_opts.multi_files_on) {
1707 /* Multiple-file mode doesn't work under certain conditions:
1708 a) it doesn't work if you're writing to the standard output;
1709 b) it doesn't work if you're writing to a pipe;
1711 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1712 cmdarg_err("Multiple capture files requested, but "
1713 "the capture is being written to the standard output.");
1714 exit_status = INVALID_OPTION;
1717 if (global_capture_opts.output_to_pipe) {
1718 cmdarg_err("Multiple capture files requested, but "
1719 "the capture file is a pipe.");
1720 exit_status = INVALID_OPTION;
1723 if (!global_capture_opts.has_autostop_filesize &&
1724 !global_capture_opts.has_file_duration &&
1725 !global_capture_opts.has_file_interval) {
1726 cmdarg_err("Multiple capture files requested, but "
1727 "no maximum capture file size, duration or interval was specified.");
1728 exit_status = INVALID_OPTION;
1732 /* Currently, we don't support read or display filters when capturing
1733 and saving the packets. */
1734 if (rfilter != NULL) {
1735 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1736 exit_status = INVALID_OPTION;
1739 if (dfilter != NULL) {
1740 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1741 exit_status = INVALID_OPTION;
1744 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1746 /* They didn't specify a "-w" flag, so we won't be saving to a
1747 capture file. Check for options that only make sense if
1748 we're saving to a file. */
1749 if (global_capture_opts.has_autostop_filesize) {
1750 cmdarg_err("Maximum capture file size specified, but "
1751 "capture isn't being saved to a file.");
1752 exit_status = INVALID_OPTION;
1755 if (global_capture_opts.multi_files_on) {
1756 cmdarg_err("Multiple capture files requested, but "
1757 "the capture isn't being saved to a file.");
1758 exit_status = INVALID_OPTION;
1761 if (global_capture_opts.capture_comment) {
1762 cmdarg_err("A capture comment was specified, but "
1763 "the capture isn't being saved to a file.");
1764 exit_status = INVALID_OPTION;
1773 /* Start windows sockets */
1774 result = WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1777 exit_status = INIT_FAILED;
1782 /* Notify all registered modules that have had any of their preferences
1783 changed either from one of the preferences file or from the command
1784 line that their preferences have changed. */
1787 /* We can also enable specified taps for export object */
1788 start_exportobjects();
1790 /* At this point MATE will have registered its field array so we can
1791 check if the fields specified by the user are all good.
1795 GSList *invalid_fields = output_fields_valid(output_fields);
1796 if (invalid_fields != NULL) {
1798 cmdarg_err("Some fields aren't valid:");
1799 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
1800 cmdarg_err_cont("\t%s", (gchar *)it->data);
1802 g_slist_free(invalid_fields);
1803 exit_status = INVALID_OPTION;
1808 /* We currently don't support taps, or printing dissected packets,
1809 if we're writing to a pipe. */
1810 if (global_capture_opts.saving_to_file &&
1811 global_capture_opts.output_to_pipe) {
1812 if (tap_listeners_require_dissection()) {
1813 cmdarg_err("Taps aren't supported when saving to a pipe.");
1814 exit_status = INVALID_OPTION;
1817 if (print_packet_info) {
1818 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1819 exit_status = INVALID_OPTION;
1825 if (ex_opt_count("read_format") > 0) {
1826 const gchar* name = ex_opt_get_next("read_format");
1827 in_file_type = open_info_name_to_type(name);
1828 if (in_file_type == WTAP_TYPE_AUTO) {
1829 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1830 list_read_capture_types();
1831 exit_status = INVALID_OPTION;
1836 timestamp_set_type(global_dissect_options.time_format);
1839 * Enabled and disabled protocols and heuristic dissectors as per
1840 * command-line options.
1842 if (!setup_enabled_and_disabled_protocols()) {
1843 exit_status = INVALID_OPTION;
1847 /* Build the column format array */
1848 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1851 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1852 capture_opts_trim_ring_num_files(&global_capture_opts);
1855 if (rfilter != NULL) {
1856 tshark_debug("Compiling read filter: '%s'", rfilter);
1857 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
1858 cmdarg_err("%s", err_msg);
1862 #ifdef HAVE_PCAP_OPEN_DEAD
1866 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1868 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1870 " Note: That read filter code looks like a valid capture filter;\n"
1871 " maybe you mixed them up?");
1877 exit_status = INVALID_INTERFACE;
1881 cfile.rfcode = rfcode;
1883 if (dfilter != NULL) {
1884 tshark_debug("Compiling display filter: '%s'", dfilter);
1885 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1886 cmdarg_err("%s", err_msg);
1890 #ifdef HAVE_PCAP_OPEN_DEAD
1894 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1896 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1898 " Note: That display filter code looks like a valid capture filter;\n"
1899 " maybe you mixed them up?");
1905 exit_status = INVALID_FILTER;
1909 cfile.dfcode = dfcode;
1911 if (print_packet_info) {
1912 /* If we're printing as text or PostScript, we have
1913 to create a print stream. */
1914 if (output_action == WRITE_TEXT) {
1915 switch (print_format) {
1918 print_stream = print_stream_text_stdio_new(stdout);
1922 print_stream = print_stream_ps_stdio_new(stdout);
1926 g_assert_not_reached();
1931 /* PDU export requested. Take the ownership of the '-w' file, apply tap
1932 * filters and start tapping. */
1933 if (pdu_export_arg) {
1934 const char *exp_pdu_tap_name = pdu_export_arg;
1935 const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
1936 char *exp_pdu_error;
1941 cmdarg_err("PDUs export requires a capture file (specify with -r).");
1942 exit_status = INVALID_OPTION;
1945 /* Take ownership of the '-w' output file. */
1947 exp_pdu_filename = global_capture_opts.save_file;
1948 global_capture_opts.save_file = NULL;
1950 exp_pdu_filename = output_file_name;
1951 output_file_name = NULL;
1953 if (exp_pdu_filename == NULL) {
1954 cmdarg_err("PDUs export requires an output file (-w).");
1955 exit_status = INVALID_OPTION;
1959 exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
1961 if (exp_pdu_error) {
1962 cmdarg_err("Cannot register tap: %s", exp_pdu_error);
1963 g_free(exp_pdu_error);
1964 exit_status = INVALID_TAP;
1968 if (strcmp(exp_pdu_filename, "-") == 0) {
1969 /* Write to the standard output. */
1972 exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
1974 cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
1975 exit_status = INVALID_FILE;
1980 /* Activate the export PDU tap */
1981 comment = g_strdup_printf("Dump of PDUs from %s", cf_name);
1982 err = exp_pdu_open(&exp_pdu_tap_data, exp_fd, comment);
1985 cfile_dump_open_failure_message("TShark", exp_pdu_filename, err,
1986 WTAP_FILE_TYPE_SUBTYPE_PCAPNG);
1987 exit_status = INVALID_EXPORT;
1992 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
1995 tshark_debug("tshark: Opening capture file: %s", cf_name);
1997 * We're reading a capture file.
1999 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2002 exit_status = INVALID_FILE;
2006 /* Start statistics taps; we do so after successfully opening the
2007 capture file, so we know we have something to compute stats
2008 on, and after registering all dissectors, so that MATE will
2009 have registered its field array so we can have a tap filter
2010 with one of MATE's late-registered fields as part of the
2012 start_requested_stats();
2014 /* Do we need to do dissection of packets? That depends on, among
2015 other things, what taps are listening, so determine that after
2016 starting the statistics taps. */
2017 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2019 /* Process the packets in the file */
2020 tshark_debug("tshark: invoking process_cap_file() to process the packets");
2023 success = process_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2024 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2025 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2027 success = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, max_packet_count, 0);
2030 CATCH(OutOfMemoryError) {
2034 "Sorry, but TShark has to terminate now.\n"
2036 "More information and workarounds can be found at\n"
2037 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2043 /* We still dump out the results of taps, etc., as we might have
2044 read some packets; however, we exit with an error status. */
2048 if (pdu_export_arg) {
2049 err = exp_pdu_close(&exp_pdu_tap_data);
2051 cfile_close_failure_message(exp_pdu_filename, err);
2054 g_free(pdu_export_arg);
2055 g_free(exp_pdu_filename);
2058 tshark_debug("tshark: no capture file specified");
2059 /* No capture file specified, so we're supposed to do a live capture
2060 or get a list of link-layer types for a live capture device;
2061 do we have support for live captures? */
2064 /* Warn the user if npf.sys isn't loaded. */
2065 if (!npf_sys_is_running()) {
2066 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
2067 "capturing or\nlisting interfaces.\n");
2071 /* if no interface was specified, pick a default */
2072 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2073 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2074 if (exit_status != 0) {
2078 /* if requested, list the link layer types and exit */
2082 /* Get the list of link-layer types for the capture devices. */
2083 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2084 interface_options *interface_opts;
2085 if_capabilities_t *caps;
2086 char *auth_str = NULL;
2087 int if_caps_queries = caps_queries;
2089 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2090 #ifdef HAVE_PCAP_REMOTE
2091 if (interface_opts->auth_type == CAPTURE_AUTH_PWD) {
2092 auth_str = g_strdup_printf("%s:%s", interface_opts->auth_username, interface_opts->auth_password);
2095 caps = capture_get_if_capabilities(interface_opts->name, interface_opts->monitor_mode, auth_str, &err_str, NULL);
2098 cmdarg_err("%s", err_str);
2100 exit_status = INVALID_CAPABILITY;
2103 if ((if_caps_queries & CAPS_QUERY_LINK_TYPES) && caps->data_link_types == NULL) {
2104 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts->name);
2105 exit_status = INVALID_DATA_LINK;
2108 if ((if_caps_queries & CAPS_QUERY_TIMESTAMP_TYPES) && caps->timestamp_types == NULL) {
2109 cmdarg_err("The capture device \"%s\" has no timestamp types.", interface_opts->name);
2110 exit_status = INVALID_TIMESTAMP_TYPE;
2113 if (interface_opts->monitor_mode)
2114 if_caps_queries |= CAPS_MONITOR_MODE;
2115 capture_opts_print_if_capabilities(caps, interface_opts->name, if_caps_queries);
2116 free_if_capabilities(caps);
2118 exit_status = EXIT_SUCCESS;
2123 * If the standard error isn't a terminal, don't print packet counts,
2124 * as they won't show up on the user's terminal and they'll get in
2125 * the way of error messages in the file (to which we assume the
2126 * standard error was redirected; if it's redirected to the null
2127 * device, there's no point in printing packet counts anyway).
2129 * Otherwise, if we're printing packet information and the standard
2130 * output is a terminal (which we assume means the standard output and
2131 * error are going to the same terminal), don't print packet counts,
2132 * as they'll get in the way of the packet information.
2134 * Otherwise, if the user specified -q, don't print packet counts.
2136 * Otherwise, print packet counts.
2138 * XXX - what if the user wants to do a live capture, doesn't want
2139 * to save it to a file, doesn't want information printed for each
2140 * packet, does want some "-z" statistic, and wants packet counts
2141 * so they know whether they're seeing any packets? -q will
2142 * suppress the information printed for each packet, but it'll
2143 * also suppress the packet counts.
2145 if (!ws_isatty(ws_fileno(stderr)))
2146 print_packet_counts = FALSE;
2147 else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
2148 print_packet_counts = FALSE;
2150 print_packet_counts = FALSE;
2152 print_packet_counts = TRUE;
2154 if (print_packet_info) {
2155 if (!write_preamble(&cfile)) {
2156 show_print_file_io_error(errno);
2157 exit_status = INVALID_FILE;
2162 tshark_debug("tshark: performing live capture");
2164 /* Start statistics taps; we should only do so after the capture
2165 started successfully, so we know we have something to compute
2166 stats, but we currently don't check for that - see below.
2168 We do so after registering all dissectors, so that MATE will
2169 have registered its field array so we can have a tap filter
2170 with one of MATE's late-registered fields as part of the
2172 start_requested_stats();
2174 /* Do we need to do dissection of packets? That depends on, among
2175 other things, what taps are listening, so determine that after
2176 starting the statistics taps. */
2177 do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
2180 * XXX - this returns FALSE if an error occurred, but it also
2181 * returns FALSE if the capture stops because a time limit
2182 * was reached (and possibly other limits), so we can't assume
2183 * it means an error.
2185 * The capture code is a bit twisty, so it doesn't appear to
2186 * be an easy fix. We just ignore the return value for now.
2187 * Instead, pass on the exit status from the capture child.
2190 exit_status = global_capture_session.fork_child_status;
2192 if (print_packet_info) {
2193 if (!write_finale()) {
2194 show_print_file_io_error(errno);
2198 /* No - complain. */
2199 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2200 exit_status = INVALID_CAPTURE;
2205 if (cfile.provider.frames != NULL) {
2206 free_frame_data_sequence(cfile.provider.frames);
2207 cfile.provider.frames = NULL;
2210 draw_tap_listeners(TRUE);
2211 /* Memory cleanup */
2212 reset_tap_listeners();
2213 funnel_dump_all_text_windows();
2214 epan_free(cfile.epan);
2218 output_fields_free(output_fields);
2219 output_fields = NULL;
2223 destroy_print_stream(print_stream);
2225 capture_opts_cleanup(&global_capture_opts);
2227 g_free(output_file_name);
2229 col_cleanup(&cfile.cinfo);
2230 free_filter_lists();
2234 dfilter_free(dfcode);
2238 /*#define USE_BROKEN_G_MAIN_LOOP*/
2240 #ifdef USE_BROKEN_G_MAIN_LOOP
2243 gboolean loop_running = FALSE;
2245 guint32 packet_count = 0;
2248 typedef struct pipe_input_tag {
2251 ws_process_id *child_process;
2252 pipe_input_cb_t input_cb;
2253 guint pipe_input_id;
2255 GMutex *callback_running;
2259 static pipe_input_t pipe_input;
2262 /* The timer has expired, see if there's stuff to read from the pipe,
2263 if so, do the callback */
2265 pipe_timer_cb(gpointer data)
2271 pipe_input_t *pipe_input_p = data;
2272 gint iterations = 0;
2274 g_mutex_lock (pipe_input_p->callback_running);
2276 /* try to read data from the pipe only 5 times, to avoid blocking */
2277 while(iterations < 5) {
2278 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2280 /* Oddly enough although Named pipes don't work on win9x,
2281 PeekNamedPipe does !!! */
2282 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2283 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2285 /* Get the child process exit status */
2286 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2289 /* If the Peek returned an error, or there are bytes to be read
2290 or the childwatcher thread has terminated then call the normal
2292 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2294 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2296 /* And call the real handler */
2297 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2298 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2299 /* pipe closed, return false so that the timer is stopped */
2300 g_mutex_unlock (pipe_input_p->callback_running);
2305 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2306 /* No data, stop now */
2313 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2315 g_mutex_unlock (pipe_input_p->callback_running);
2317 /* we didn't stopped the timer, so let it run */
2324 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2327 pipe_input.source = source;
2328 pipe_input.child_process = child_process;
2329 pipe_input.user_data = user_data;
2330 pipe_input.input_cb = input_cb;
2333 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2334 g_mutex_init(pipe_input.callback_running);
2335 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2336 do this but that doesn't cover all win32 platforms. GTK can do
2337 this but doesn't seem to work over processes. Attempt to do
2338 something similar here, start a timer and check for data on every
2340 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2341 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2345 static const nstime_t *
2346 tshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
2348 if (prov->ref && prov->ref->num == frame_num)
2349 return &prov->ref->abs_ts;
2351 if (prov->prev_dis && prov->prev_dis->num == frame_num)
2352 return &prov->prev_dis->abs_ts;
2354 if (prov->prev_cap && prov->prev_cap->num == frame_num)
2355 return &prov->prev_cap->abs_ts;
2358 frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
2360 return (fd) ? &fd->abs_ts : NULL;
2367 tshark_epan_new(capture_file *cf)
2369 static const struct packet_provider_funcs funcs = {
2370 tshark_get_frame_ts,
2371 cap_file_provider_get_interface_name,
2372 cap_file_provider_get_interface_description,
2376 return epan_new(&cf->provider, &funcs);
2383 volatile gboolean ret = TRUE;
2386 #ifdef USE_TSHARK_SELECT
2390 struct sigaction action, oldaction;
2393 /* Create new dissection section. */
2394 epan_free(cfile.epan);
2395 cfile.epan = tshark_epan_new(&cfile);
2398 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2399 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2401 /* Catch SIGINT and SIGTERM and, if we get either of them,
2402 clean up and exit. If SIGHUP isn't being ignored, catch
2403 it too and, if we get it, clean up and exit.
2405 We restart any read that was in progress, so that it doesn't
2406 disrupt reading from the sync pipe. The signal handler tells
2407 the capture child to finish; it will report that it finished,
2408 or will exit abnormally, so we'll stop reading from the sync
2409 pipe, pick up the exit status, and quit. */
2410 memset(&action, 0, sizeof(action));
2411 action.sa_handler = capture_cleanup;
2412 action.sa_flags = SA_RESTART;
2413 sigemptyset(&action.sa_mask);
2414 sigaction(SIGTERM, &action, NULL);
2415 sigaction(SIGINT, &action, NULL);
2416 sigaction(SIGHUP, NULL, &oldaction);
2417 if (oldaction.sa_handler == SIG_DFL)
2418 sigaction(SIGHUP, &action, NULL);
2421 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2422 quiet mode, report the number of packets we've captured.
2424 Again, restart any read that was in progress, so that it doesn't
2425 disrupt reading from the sync pipe. */
2426 action.sa_handler = report_counts_siginfo;
2427 action.sa_flags = SA_RESTART;
2428 sigemptyset(&action.sa_mask);
2429 sigaction(SIGINFO, &action, NULL);
2430 #endif /* SIGINFO */
2433 global_capture_session.state = CAPTURE_PREPARING;
2435 /* Let the user know which interfaces were chosen. */
2436 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2437 interface_options *interface_opts;
2439 interface_opts = &g_array_index(global_capture_opts.ifaces, interface_options, i);
2440 interface_opts->descr = get_interface_descriptive_name(interface_opts->name);
2442 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2443 if (really_quiet == FALSE)
2444 fprintf(stderr, "Capturing on %s\n", str->str);
2446 g_string_free(str, TRUE);
2448 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2454 * Force synchronous resolution of IP addresses; we're doing only
2455 * one pass, so we can't do it in the background and fix up past
2458 set_resolution_synchrony(TRUE);
2460 /* the actual capture loop
2462 * XXX - glib doesn't seem to provide any event based loop handling.
2464 * XXX - for whatever reason,
2465 * calling g_main_loop_new() ends up in 100% cpu load.
2467 * But that doesn't matter: in UNIX we can use select() to find an input
2468 * source with something to do.
2470 * But that doesn't matter because we're in a CLI (that doesn't need to
2471 * update a GUI or something at the same time) so it's OK if we block
2472 * trying to read from the pipe.
2474 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2475 * wrong (but I leave it there in case I am...).
2478 #ifdef USE_TSHARK_SELECT
2480 FD_SET(pipe_input.source, &readfds);
2483 loop_running = TRUE;
2487 while (loop_running)
2489 #ifdef USE_TSHARK_SELECT
2490 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2494 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2496 loop_running = FALSE;
2497 } else if (ret == 1) {
2499 /* Call the real handler */
2500 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2501 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2503 loop_running = FALSE;
2505 #ifdef USE_TSHARK_SELECT
2510 CATCH(OutOfMemoryError) {
2514 "Sorry, but TShark has to terminate now.\n"
2516 "More information and workarounds can be found at\n"
2517 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2524 /* capture child detected an error */
2526 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2528 cmdarg_err("%s", error_msg);
2529 cmdarg_err_cont("%s", secondary_error_msg);
2533 /* capture child detected an capture filter related error */
2535 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2537 capture_options *capture_opts = cap_session->capture_opts;
2538 dfilter_t *rfcode = NULL;
2539 interface_options *interface_opts;
2541 g_assert(i < capture_opts->ifaces->len);
2542 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
2544 if (dfilter_compile(interface_opts->cfilter, &rfcode, NULL) && rfcode != NULL) {
2546 "Invalid capture filter \"%s\" for interface '%s'.\n"
2548 "That string looks like a valid display filter; however, it isn't a valid\n"
2549 "capture filter (%s).\n"
2551 "Note that display filters and capture filters don't have the same syntax,\n"
2552 "so you can't use most display filter expressions as capture filters.\n"
2554 "See the User's Guide for a description of the capture filter syntax.",
2555 interface_opts->cfilter, interface_opts->descr, error_message);
2556 dfilter_free(rfcode);
2559 "Invalid capture filter \"%s\" for interface '%s'.\n"
2561 "That string isn't a valid capture filter (%s).\n"
2562 "See the User's Guide for a description of the capture filter syntax.",
2563 interface_opts->cfilter, interface_opts->descr, error_message);
2568 /* capture child tells us we have a new (or the first) capture file */
2570 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2572 capture_options *capture_opts = cap_session->capture_opts;
2573 capture_file *cf = (capture_file *) cap_session->cf;
2574 gboolean is_tempfile;
2577 if (cap_session->state == CAPTURE_PREPARING) {
2578 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2580 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2582 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2584 /* free the old filename */
2585 if (capture_opts->save_file != NULL) {
2587 /* we start a new capture file, close the old one (if we had one before) */
2588 if (cf->state != FILE_CLOSED) {
2589 if (cf->provider.wth != NULL) {
2590 wtap_close(cf->provider.wth);
2591 cf->provider.wth = NULL;
2593 cf->state = FILE_CLOSED;
2596 g_free(capture_opts->save_file);
2597 is_tempfile = FALSE;
2599 epan_free(cf->epan);
2600 cf->epan = tshark_epan_new(cf);
2602 /* we didn't had a save_file before, must be a tempfile */
2606 /* save the new filename */
2607 capture_opts->save_file = g_strdup(new_file);
2609 /* if we are in real-time mode, open the new file now */
2610 if (do_dissection) {
2611 /* this is probably unecessary, but better safe than sorry */
2612 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2613 /* Attempt to open the capture file and set up to read from it. */
2614 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2618 /* Don't unlink (delete) the save file - leave it around,
2619 for debugging purposes. */
2620 g_free(capture_opts->save_file);
2621 capture_opts->save_file = NULL;
2626 cap_session->state = CAPTURE_RUNNING;
2632 /* capture child tells us we have new packets to read */
2634 capture_input_new_packets(capture_session *cap_session, int to_read)
2640 capture_file *cf = (capture_file *)cap_session->cf;
2641 gboolean filtering_tap_listeners;
2646 * Prevent a SIGINFO handler from writing to the standard error while
2647 * we're doing so or writing to the standard output; instead, have it
2648 * just set a flag telling us to print that information when we're done.
2651 #endif /* SIGINFO */
2653 /* Do we have any tap listeners with filters? */
2654 filtering_tap_listeners = have_filtering_tap_listeners();
2656 /* Get the union of the flags for all tap listeners. */
2657 tap_flags = union_of_tap_listener_flags();
2659 if (do_dissection) {
2660 gboolean create_proto_tree;
2661 epan_dissect_t *edt;
2664 * Determine whether we need to create a protocol tree.
2667 * we're going to apply a read filter;
2669 * we're going to apply a display filter;
2671 * we're going to print the protocol tree;
2673 * one of the tap listeners is going to apply a filter;
2675 * one of the tap listeners requires a protocol tree;
2677 * a postdissector wants field values or protocols
2678 * on the first pass;
2680 * we have custom columns (which require field values, which
2681 * currently requires that we build a protocol tree).
2684 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2685 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
2686 have_custom_cols(&cf->cinfo) || dissect_color);
2688 /* The protocol tree will be "visible", i.e., printed, only if we're
2689 printing packet details, which is true if we're printing stuff
2690 ("print_packet_info" is true) and we're in verbose mode
2691 ("packet_details" is true). */
2692 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2694 while (to_read-- && cf->provider.wth) {
2695 wtap_cleareof(cf->provider.wth);
2696 ret = wtap_read(cf->provider.wth, &err, &err_info, &data_offset);
2697 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
2699 /* read from file failed, tell the capture child to stop */
2700 sync_pipe_stop(cap_session);
2701 wtap_close(cf->provider.wth);
2702 cf->provider.wth = NULL;
2704 ret = process_packet_single_pass(cf, edt, data_offset,
2705 wtap_get_rec(cf->provider.wth),
2706 wtap_get_buf_ptr(cf->provider.wth), tap_flags);
2709 /* packet successfully read and gone through the "Read Filter" */
2714 epan_dissect_free(edt);
2718 * Dumpcap's doing all the work; we're not doing any dissection.
2719 * Count all the packets it wrote.
2721 packet_count += to_read;
2724 if (print_packet_counts) {
2725 /* We're printing packet counts. */
2726 if (packet_count != 0) {
2727 fprintf(stderr, "\r%u ", packet_count);
2728 /* stderr could be line buffered */
2735 * Allow SIGINFO handlers to write.
2740 * If a SIGINFO handler asked us to write out capture counts, do so.
2744 #endif /* SIGINFO */
2750 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2751 /* Report the count only if we aren't printing a packet count
2752 as packets arrive. */
2753 fprintf(stderr, "%u packet%s captured\n", packet_count,
2754 plurality(packet_count, "", "s"));
2757 infoprint = FALSE; /* we just reported it */
2758 #endif /* SIGINFO */
2763 report_counts_siginfo(int signum _U_)
2765 int sav_errno = errno;
2766 /* If we've been told to delay printing, just set a flag asking
2767 that we print counts (if we're supposed to), otherwise print
2768 the count of packets captured (if we're supposed to). */
2775 #endif /* SIGINFO */
2778 /* capture child detected any packet drops? */
2780 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2782 if (print_packet_counts) {
2783 /* We're printing packet counts to stderr.
2784 Send a newline so that we move to the line after the packet count. */
2785 fprintf(stderr, "\n");
2789 /* We're printing packet counts to stderr.
2790 Send a newline so that we move to the line after the packet count. */
2791 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2797 * Capture child closed its side of the pipe, report any error and
2798 * do the required cleanup.
2801 capture_input_closed(capture_session *cap_session, gchar *msg)
2803 capture_file *cf = (capture_file *) cap_session->cf;
2806 fprintf(stderr, "tshark: %s\n", msg);
2810 if (cf != NULL && cf->provider.wth != NULL) {
2811 wtap_close(cf->provider.wth);
2812 if (cf->is_tempfile) {
2813 ws_unlink(cf->filename);
2816 #ifdef USE_BROKEN_G_MAIN_LOOP
2817 /*g_main_loop_quit(loop);*/
2818 g_main_loop_quit(loop);
2820 loop_running = FALSE;
2829 capture_cleanup(DWORD ctrltype _U_)
2831 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2832 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2833 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2834 like SIGTERM at least when the machine's shutting down.
2836 For now, we handle them all as indications that we should clean up
2837 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2840 We must return TRUE so that no other handler - such as one that would
2841 terminate the process - gets called.
2843 XXX - for some reason, typing ^C to TShark, if you run this in
2844 a Cygwin console window in at least some versions of Cygwin,
2845 causes TShark to terminate immediately; this routine gets
2846 called, but the main loop doesn't get a chance to run and
2847 exit cleanly, at least if this is compiled with Microsoft Visual
2848 C++ (i.e., it's a property of the Cygwin console window or Bash;
2849 it happens if TShark is not built with Cygwin - for all I know,
2850 building it with Cygwin may make the problem go away). */
2852 /* tell the capture child to stop */
2853 sync_pipe_stop(&global_capture_session);
2855 /* don't stop our own loop already here, otherwise status messages and
2856 * cleanup wouldn't be done properly. The child will indicate the stop of
2857 * everything by calling capture_input_closed() later */
2863 capture_cleanup(int signum _U_)
2865 /* tell the capture child to stop */
2866 sync_pipe_stop(&global_capture_session);
2868 /* don't stop our own loop already here, otherwise status messages and
2869 * cleanup wouldn't be done properly. The child will indicate the stop of
2870 * everything by calling capture_input_closed() later */
2873 #endif /* HAVE_LIBPCAP */
2876 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2877 gint64 offset, wtap_rec *rec,
2884 /* The frame number of this packet is one more than the count of
2885 frames in this packet. */
2886 framenum = cf->count + 1;
2888 /* If we're not running a display filter and we're not printing any
2889 packet information, we don't need to do a dissection. This means
2890 that all packets can be marked as 'passed'. */
2893 frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
2895 /* If we're going to run a read filter or a display filter, set up to
2896 do a dissection and do so. (This is the first pass of two passes
2897 over the packets, so we will not be printing any information
2898 from the dissection or running taps on the packet; if we're doing
2899 any of that, we'll do it in the second pass.) */
2901 /* If we're running a read filter, prime the epan_dissect_t with that
2904 epan_dissect_prime_with_dfilter(edt, cf->rfcode);
2907 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2909 /* This is the first pass, so prime the epan_dissect_t with the
2910 hfids postdissectors want on the first pass. */
2911 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
2913 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2914 &cf->provider.ref, cf->provider.prev_dis);
2915 if (cf->provider.ref == &fdlocal) {
2916 ref_frame = fdlocal;
2917 cf->provider.ref = &ref_frame;
2920 epan_dissect_run(edt, cf->cd_t, rec,
2921 frame_tvbuff_new(&cf->provider, &fdlocal, pd),
2924 /* Run the read filter if we have one. */
2926 passed = dfilter_apply_edt(cf->rfcode, edt);
2930 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2931 cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
2933 /* If we're not doing dissection then there won't be any dependent frames.
2934 * More importantly, edt.pi.dependent_frames won't be initialized because
2935 * epan hasn't been initialized.
2936 * if we *are* doing dissection, then mark the dependent frames, but only
2937 * if a display filter was given and it matches this packet.
2939 if (edt && cf->dfcode) {
2940 if (dfilter_apply_edt(cf->dfcode, edt)) {
2941 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
2947 /* if we don't add it to the frame_data_sequence, clean it up right now
2949 frame_data_destroy(&fdlocal);
2953 epan_dissect_reset(edt);
2959 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
2960 frame_data *fdata, wtap_rec *rec,
2961 Buffer *buf, guint tap_flags)
2966 /* If we're not running a display filter and we're not printing any
2967 packet information, we don't need to do a dissection. This means
2968 that all packets can be marked as 'passed'. */
2971 /* If we're going to print packet information, or we're going to
2972 run a read filter, or we're going to process taps, set up to
2973 do a dissection and do so. (This is the second pass of two
2974 passes over the packets; that's the pass where we print
2975 packet information or run taps.) */
2977 /* If we're running a display filter, prime the epan_dissect_t with that
2980 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2982 col_custom_prime_edt(edt, &cf->cinfo);
2984 /* We only need the columns if either
2985 1) some tap needs the columns
2987 2) we're printing packet info but we're *not* verbose; in verbose
2988 mode, we print the protocol tree, not the protocol summary.
2990 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
2995 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2996 &cf->provider.ref, cf->provider.prev_dis);
2997 if (cf->provider.ref == fdata) {
2999 cf->provider.ref = &ref_frame;
3002 if (dissect_color) {
3003 color_filters_prime_edt(edt);
3004 fdata->flags.need_colorize = 1;
3007 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3008 frame_tvbuff_new_buffer(&cf->provider, fdata, buf),
3011 /* Run the read/display filter if we have one. */
3013 passed = dfilter_apply_edt(cf->dfcode, edt);
3017 frame_data_set_after_dissect(fdata, &cum_bytes);
3018 /* Process this packet. */
3019 if (print_packet_info) {
3020 /* We're printing packet information; print the information for
3022 print_packet(cf, edt);
3024 /* If we're doing "line-buffering", flush the standard output
3025 after every packet. See the comment above, for the "-l"
3026 option, for an explanation of why we do that. */
3030 if (ferror(stdout)) {
3031 show_print_file_io_error(errno);
3035 cf->provider.prev_dis = fdata;
3037 cf->provider.prev_cap = fdata;
3040 epan_dissect_reset(edt);
3042 return passed || fdata->flags.dependent_of_displayed;
3046 process_cap_file(capture_file *cf, char *save_file, int out_file_type,
3047 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3049 gboolean success = TRUE;
3052 int err = 0, err_pass1 = 0;
3053 gchar *err_info = NULL, *err_info_pass1 = NULL;
3055 gboolean filtering_tap_listeners;
3057 wtap_dump_params params = WTAP_DUMP_PARAMS_INIT;
3060 epan_dissect_t *edt = NULL;
3061 char *shb_user_appl;
3063 wtap_rec_init(&rec);
3065 if (save_file != NULL) {
3066 /* Set up to write to the capture file. */
3067 wtap_dump_params_init(¶ms, cf->provider.wth);
3069 /* If we don't have an application name add Tshark */
3070 if (wtap_block_get_string_option_value(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
3071 /* this is free'd by wtap_block_free() later */
3072 wtap_block_add_string_option_format(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "%s", get_appname_and_version());
3075 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3076 if (strcmp(save_file, "-") == 0) {
3077 /* Write to the standard output. */
3078 pdh = wtap_dump_open_stdout(out_file_type, WTAP_UNCOMPRESSED, ¶ms,
3081 pdh = wtap_dump_open(save_file, out_file_type, WTAP_UNCOMPRESSED, ¶ms,
3085 g_free(params.idb_inf);
3086 params.idb_inf = NULL;
3089 /* We couldn't set up to write to the capture file. */
3090 cfile_dump_open_failure_message("TShark", save_file, err, out_file_type);
3095 /* Set up to print packet information. */
3096 if (print_packet_info) {
3097 if (!write_preamble(cf)) {
3098 show_print_file_io_error(errno);
3106 /* Do we have any tap listeners with filters? */
3107 filtering_tap_listeners = have_filtering_tap_listeners();
3109 /* Get the union of the flags for all tap listeners. */
3110 tap_flags = union_of_tap_listener_flags();
3112 if (perform_two_pass_analysis) {
3115 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3117 /* Allocate a frame_data_sequence for all the frames. */
3118 cf->provider.frames = new_frame_data_sequence();
3120 if (do_dissection) {
3121 gboolean create_proto_tree;
3124 * Determine whether we need to create a protocol tree.
3127 * we're going to apply a read filter;
3129 * we're going to apply a display filter;
3131 * a postdissector wants field values or protocols
3132 * on the first pass.
3135 (cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
3137 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3139 /* We're not going to display the protocol tree on this pass,
3140 so it's not going to be "visible". */
3141 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3144 tshark_debug("tshark: reading records for first pass");
3145 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3146 if (process_packet_first_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3147 wtap_get_buf_ptr(cf->provider.wth))) {
3148 /* Stop reading if we have the maximum number of packets;
3149 * When the -c option has not been used, max_packet_count
3150 * starts at 0, which practically means, never stop reading.
3151 * (unless we roll over max_packet_count ?)
3153 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3154 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3155 max_packet_count, data_offset, max_byte_count);
3156 err = 0; /* This is not an error */
3163 * If we got a read error on the first pass, remember the error, so
3164 * but do the second pass, so we can at least process the packets we
3165 * read, and then report the first-pass error after the second pass
3166 * (and before we report any second-pass errors), so all the the
3167 * errors show up at the end.
3171 err_info_pass1 = err_info;
3177 epan_dissect_free(edt);
3181 /* Close the sequential I/O side, to free up memory it requires. */
3182 wtap_sequential_close(cf->provider.wth);
3184 /* Allow the protocol dissectors to free up memory that they
3185 * don't need after the sequential run-through of the packets. */
3186 postseq_cleanup_all_protocols();
3188 cf->provider.prev_dis = NULL;
3189 cf->provider.prev_cap = NULL;
3190 ws_buffer_init(&buf, 1500);
3192 tshark_debug("tshark: done with first pass");
3194 if (do_dissection) {
3195 gboolean create_proto_tree;
3198 * Determine whether we need to create a protocol tree.
3201 * we're going to apply a display filter;
3203 * we're going to print the protocol tree;
3205 * one of the tap listeners requires a protocol tree;
3207 * we have custom columns (which require field values, which
3208 * currently requires that we build a protocol tree).
3211 (cf->dfcode || print_details || filtering_tap_listeners ||
3212 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
3214 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3216 /* The protocol tree will be "visible", i.e., printed, only if we're
3217 printing packet details, which is true if we're printing stuff
3218 ("print_packet_info" is true) and we're in verbose mode
3219 ("packet_details" is true). */
3220 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3224 * Force synchronous resolution of IP addresses; in this pass, we
3225 * can't do it in the background and fix up past dissections.
3227 set_resolution_synchrony(TRUE);
3229 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3230 fdata = frame_data_sequence_find(cf->provider.frames, framenum);
3231 if (wtap_seek_read(cf->provider.wth, fdata->file_off, &rec, &buf, &err,
3233 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3234 if (process_packet_second_pass(cf, edt, fdata, &rec, &buf,
3236 /* Either there's no read filtering or this packet passed the
3237 filter, so, if we're writing to a capture file, write
3240 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3241 if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3242 /* Error writing to a capture file */
3243 tshark_debug("tshark: error writing to a capture file (%d)", err);
3245 /* Report the error.
3246 XXX - framenum is not necessarily the frame number in
3247 the input file if there was a read filter. */
3248 cfile_write_failure_message("TShark", cf->filename, save_file,
3249 err, err_info, framenum,
3251 wtap_dump_close(pdh, &err);
3252 wtap_dump_params_cleanup(¶ms);
3261 epan_dissect_free(edt);
3265 ws_buffer_free(&buf);
3267 tshark_debug("tshark: done with second pass");
3270 /* !perform_two_pass_analysis */
3272 gboolean create_proto_tree = FALSE;
3273 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3275 if (do_dissection) {
3277 * Determine whether we need to create a protocol tree.
3280 * we're going to apply a read filter;
3282 * we're going to apply a display filter;
3284 * we're going to print the protocol tree;
3286 * one of the tap listeners is going to apply a filter;
3288 * one of the tap listeners requires a protocol tree;
3290 * a postdissector wants field values or protocols
3291 * on the first pass;
3293 * we have custom columns (which require field values, which
3294 * currently requires that we build a protocol tree).
3297 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3298 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
3299 have_custom_cols(&cf->cinfo) || dissect_color);
3301 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3303 /* The protocol tree will be "visible", i.e., printed, only if we're
3304 printing packet details, which is true if we're printing stuff
3305 ("print_packet_info" is true) and we're in verbose mode
3306 ("packet_details" is true). */
3307 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3311 * Force synchronous resolution of IP addresses; we're doing only
3312 * one pass, so we can't do it in the background and fix up past
3315 set_resolution_synchrony(TRUE);
3317 while (wtap_read(cf->provider.wth, &err, &err_info, &data_offset)) {
3320 tshark_debug("tshark: processing packet #%d", framenum);
3322 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
3324 if (process_packet_single_pass(cf, edt, data_offset, wtap_get_rec(cf->provider.wth),
3325 wtap_get_buf_ptr(cf->provider.wth), tap_flags)) {
3326 /* Either there's no read filtering or this packet passed the
3327 filter, so, if we're writing to a capture file, write
3330 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3331 if (!wtap_dump(pdh, wtap_get_rec(cf->provider.wth), wtap_get_buf_ptr(cf->provider.wth), &err, &err_info)) {
3332 /* Error writing to a capture file */
3333 tshark_debug("tshark: error writing to a capture file (%d)", err);
3334 cfile_write_failure_message("TShark", cf->filename, save_file,
3335 err, err_info, framenum, out_file_type);
3336 wtap_dump_close(pdh, &err);
3337 wtap_dump_params_cleanup(¶ms);
3342 /* Stop reading if we have the maximum number of packets;
3343 * When the -c option has not been used, max_packet_count
3344 * starts at 0, which practically means, never stop reading.
3345 * (unless we roll over max_packet_count ?)
3347 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3348 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3349 max_packet_count, data_offset, max_byte_count);
3350 err = 0; /* This is not an error */
3356 epan_dissect_free(edt);
3361 wtap_rec_cleanup(&rec);
3363 if (err != 0 || err_pass1 != 0) {
3364 tshark_debug("tshark: something failed along the line (%d)", err);
3366 * Print a message noting that the read failed somewhere along the line.
3368 * If we're printing packet data, and the standard output and error are
3369 * going to the same place, flush the standard output, so everything
3370 * buffered up is written, and then print a newline to the standard error
3371 * before printing the error message, to separate it from the packet
3372 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3373 * the _fstat() documentation at Microsoft doesn't indicate whether
3374 * st_ino is even supported.)
3377 if (print_packet_info) {
3378 ws_statb64 stat_stdout, stat_stderr;
3380 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3381 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3382 stat_stdout.st_ino == stat_stderr.st_ino) {
3384 fprintf(stderr, "\n");
3389 if (err_pass1 != 0) {
3390 /* Error on pass 1 of two-pass processing. */
3391 cfile_read_failure_message("TShark", cf->filename, err_pass1,
3395 /* Error on pass 2 of two-pass processing or on the only pass of
3396 one-pass processing. */
3397 cfile_read_failure_message("TShark", cf->filename, err, err_info);
3401 if (save_file != NULL) {
3402 if (pdh && out_file_name_res) {
3403 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3404 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3405 wtap_file_type_subtype_short_string(out_file_type));
3408 /* Now close the capture file. */
3409 if (!wtap_dump_close(pdh, &err)) {
3410 cfile_close_failure_message(save_file, err);
3414 if (print_packet_info) {
3415 if (!write_finale()) {
3416 show_print_file_io_error(errno);
3423 wtap_close(cf->provider.wth);
3424 cf->provider.wth = NULL;
3426 wtap_dump_params_cleanup(¶ms);
3432 process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
3433 wtap_rec *rec, const guchar *pd,
3440 /* Count this packet. */
3443 /* If we're not running a display filter and we're not printing any
3444 packet information, we don't need to do a dissection. This means
3445 that all packets can be marked as 'passed'. */
3448 frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
3450 /* If we're going to print packet information, or we're going to
3451 run a read filter, or we're going to process taps, set up to
3452 do a dissection and do so. (This is the one and only pass
3453 over the packets, so, if we'll be printing packet information
3454 or running taps, we'll be doing it here.) */
3456 /* If we're running a filter, prime the epan_dissect_t with that
3459 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3461 /* This is the first and only pass, so prime the epan_dissect_t
3462 with the hfids postdissectors want on the first pass. */
3463 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
3465 col_custom_prime_edt(edt, &cf->cinfo);
3467 /* We only need the columns if either
3468 1) some tap needs the columns
3470 2) we're printing packet info but we're *not* verbose; in verbose
3471 mode, we print the protocol tree, not the protocol summary.
3473 3) there is a column mapped as an individual field */
3474 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3479 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3480 &cf->provider.ref, cf->provider.prev_dis);
3481 if (cf->provider.ref == &fdata) {
3483 cf->provider.ref = &ref_frame;
3486 if (dissect_color) {
3487 color_filters_prime_edt(edt);
3488 fdata.flags.need_colorize = 1;
3491 epan_dissect_run_with_taps(edt, cf->cd_t, rec,
3492 frame_tvbuff_new(&cf->provider, &fdata, pd),
3495 /* Run the filter if we have it. */
3497 passed = dfilter_apply_edt(cf->dfcode, edt);
3501 frame_data_set_after_dissect(&fdata, &cum_bytes);
3503 /* Process this packet. */
3504 if (print_packet_info) {
3505 /* We're printing packet information; print the information for
3508 print_packet(cf, edt);
3510 /* If we're doing "line-buffering", flush the standard output
3511 after every packet. See the comment above, for the "-l"
3512 option, for an explanation of why we do that. */
3516 if (ferror(stdout)) {
3517 show_print_file_io_error(errno);
3522 /* this must be set after print_packet() [bug #8160] */
3523 prev_dis_frame = fdata;
3524 cf->provider.prev_dis = &prev_dis_frame;
3527 prev_cap_frame = fdata;
3528 cf->provider.prev_cap = &prev_cap_frame;
3531 epan_dissect_reset(edt);
3532 frame_data_destroy(&fdata);
3538 write_preamble(capture_file *cf)
3540 switch (output_action) {
3543 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3547 write_pdml_preamble(stdout, cf->filename);
3549 write_psml_preamble(&cf->cinfo, stdout);
3550 return !ferror(stdout);
3553 write_fields_preamble(output_fields, stdout);
3554 return !ferror(stdout);
3557 case WRITE_JSON_RAW:
3558 write_json_preamble(stdout);
3559 return !ferror(stdout);
3562 return !ferror(stdout);
3565 g_assert_not_reached();
3571 get_line_buf(size_t len)
3573 static char *line_bufp = NULL;
3574 static size_t line_buf_len = 256;
3575 size_t new_line_buf_len;
3577 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3578 new_line_buf_len *= 2)
3580 if (line_bufp == NULL) {
3581 line_buf_len = new_line_buf_len;
3582 line_bufp = (char *)g_malloc(line_buf_len + 1);
3584 if (new_line_buf_len > line_buf_len) {
3585 line_buf_len = new_line_buf_len;
3586 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3593 put_string(char *dest, const char *str, size_t str_len)
3595 memcpy(dest, str, str_len);
3596 dest[str_len] = '\0';
3600 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3604 for (i = str_len; i < str_with_spaces; i++)
3607 put_string(dest, str, str_len);
3611 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3615 memcpy(dest, str, str_len);
3616 for (i = str_len; i < str_with_spaces; i++)
3619 dest[str_with_spaces] = '\0';
3623 print_columns(capture_file *cf, const epan_dissect_t *edt)
3630 col_item_t* col_item;
3631 gchar str_format[11];
3632 const color_filter_t *color_filter = NULL;
3634 line_bufp = get_line_buf(256);
3639 color_filter = edt->pi.fd->color_filter;
3641 for (i = 0; i < cf->cinfo.num_cols; i++) {
3642 col_item = &cf->cinfo.columns[i];
3643 /* Skip columns not marked as visible. */
3644 if (!get_column_visible(i))
3646 switch (col_item->col_fmt) {
3648 column_len = col_len = strlen(col_item->col_data);
3651 line_bufp = get_line_buf(buf_offset + column_len);
3652 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3658 case COL_ABS_YMD_TIME: /* XXX - wider */
3659 case COL_ABS_YDOY_TIME: /* XXX - wider */
3661 case COL_UTC_YMD_TIME: /* XXX - wider */
3662 case COL_UTC_YDOY_TIME: /* XXX - wider */
3663 column_len = col_len = strlen(col_item->col_data);
3664 if (column_len < 10)
3666 line_bufp = get_line_buf(buf_offset + column_len);
3667 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3673 case COL_DEF_DL_SRC:
3674 case COL_RES_DL_SRC:
3675 case COL_UNRES_DL_SRC:
3676 case COL_DEF_NET_SRC:
3677 case COL_RES_NET_SRC:
3678 case COL_UNRES_NET_SRC:
3679 column_len = col_len = strlen(col_item->col_data);
3680 if (column_len < 12)
3682 line_bufp = get_line_buf(buf_offset + column_len);
3683 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3689 case COL_DEF_DL_DST:
3690 case COL_RES_DL_DST:
3691 case COL_UNRES_DL_DST:
3692 case COL_DEF_NET_DST:
3693 case COL_RES_NET_DST:
3694 case COL_UNRES_NET_DST:
3695 column_len = col_len = strlen(col_item->col_data);
3696 if (column_len < 12)
3698 line_bufp = get_line_buf(buf_offset + column_len);
3699 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3703 column_len = strlen(col_item->col_data);
3704 line_bufp = get_line_buf(buf_offset + column_len);
3705 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3708 buf_offset += column_len;
3709 if (i != cf->cinfo.num_cols - 1) {
3711 * This isn't the last column, so we need to print a
3712 * separator between this column and the next.
3714 * If we printed a network source and are printing a
3715 * network destination of the same type next, separate
3716 * them with a UTF-8 right arrow; if we printed a network
3717 * destination and are printing a network source of the same
3718 * type next, separate them with a UTF-8 left arrow;
3719 * otherwise separate them with a space.
3721 * We add enough space to the buffer for " \xe2\x86\x90 "
3722 * or " \xe2\x86\x92 ", even if we're only adding " ".
3724 line_bufp = get_line_buf(buf_offset + 5);
3725 switch (col_item->col_fmt) {
3730 switch (cf->cinfo.columns[i+1].col_fmt) {
3735 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3736 put_string(line_bufp + buf_offset, str_format, 5);
3741 put_string(line_bufp + buf_offset, delimiter_char, 1);
3747 case COL_DEF_DL_SRC:
3748 case COL_RES_DL_SRC:
3749 case COL_UNRES_DL_SRC:
3750 switch (cf->cinfo.columns[i+1].col_fmt) {
3752 case COL_DEF_DL_DST:
3753 case COL_RES_DL_DST:
3754 case COL_UNRES_DL_DST:
3755 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3756 put_string(line_bufp + buf_offset, str_format, 5);
3761 put_string(line_bufp + buf_offset, delimiter_char, 1);
3767 case COL_DEF_NET_SRC:
3768 case COL_RES_NET_SRC:
3769 case COL_UNRES_NET_SRC:
3770 switch (cf->cinfo.columns[i+1].col_fmt) {
3772 case COL_DEF_NET_DST:
3773 case COL_RES_NET_DST:
3774 case COL_UNRES_NET_DST:
3775 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
3776 put_string(line_bufp + buf_offset, str_format, 5);
3781 put_string(line_bufp + buf_offset, delimiter_char, 1);
3790 switch (cf->cinfo.columns[i+1].col_fmt) {
3795 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3796 put_string(line_bufp + buf_offset, str_format, 5);
3801 put_string(line_bufp + buf_offset, delimiter_char, 1);
3807 case COL_DEF_DL_DST:
3808 case COL_RES_DL_DST:
3809 case COL_UNRES_DL_DST:
3810 switch (cf->cinfo.columns[i+1].col_fmt) {
3812 case COL_DEF_DL_SRC:
3813 case COL_RES_DL_SRC:
3814 case COL_UNRES_DL_SRC:
3815 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3816 put_string(line_bufp + buf_offset, str_format, 5);
3821 put_string(line_bufp + buf_offset, delimiter_char, 1);
3827 case COL_DEF_NET_DST:
3828 case COL_RES_NET_DST:
3829 case COL_UNRES_NET_DST:
3830 switch (cf->cinfo.columns[i+1].col_fmt) {
3832 case COL_DEF_NET_SRC:
3833 case COL_RES_NET_SRC:
3834 case COL_UNRES_NET_SRC:
3835 g_snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
3836 put_string(line_bufp + buf_offset, str_format, 5);
3841 put_string(line_bufp + buf_offset, delimiter_char, 1);
3848 put_string(line_bufp + buf_offset, delimiter_char, 1);
3855 if (dissect_color && color_filter != NULL)
3856 return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
3858 return print_line(print_stream, 0, line_bufp);
3862 print_packet(capture_file *cf, epan_dissect_t *edt)
3864 if (print_summary || output_fields_has_cols(output_fields))
3865 /* Just fill in the columns. */
3866 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3868 /* Print summary columns and/or protocol tree */
3869 switch (output_action) {
3872 if (print_summary && !print_columns(cf, edt))
3874 if (print_details) {
3875 if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
3876 print_hex, edt, output_only_tables, print_stream))
3879 if (!print_line(print_stream, 0, separator))
3886 if (print_summary) {
3887 write_psml_columns(edt, stdout, dissect_color);
3888 return !ferror(stdout);
3890 if (print_details) {
3891 write_pdml_proto_tree(output_fields, protocolfilter, protocolfilter_flags, edt, &cf->cinfo, stdout, dissect_color);
3893 return !ferror(stdout);
3898 if (print_summary) {
3899 /*No non-verbose "fields" format */
3900 g_assert_not_reached();
3902 if (print_details) {
3903 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3905 return !ferror(stdout);
3911 g_assert_not_reached();
3912 if (print_details) {
3913 write_json_proto_tree(output_fields, print_dissections_expanded,
3914 print_hex, protocolfilter, protocolfilter_flags,
3915 edt, &cf->cinfo, node_children_grouper, stdout);
3916 return !ferror(stdout);
3920 case WRITE_JSON_RAW:
3922 g_assert_not_reached();
3923 if (print_details) {
3924 write_json_proto_tree(output_fields, print_dissections_none, TRUE,
3925 protocolfilter, protocolfilter_flags,
3926 edt, &cf->cinfo, node_children_grouper, stdout);
3927 return !ferror(stdout);
3932 write_ek_proto_tree(output_fields, print_summary, print_hex, protocolfilter,
3933 protocolfilter_flags, edt, &cf->cinfo, stdout);
3934 return !ferror(stdout);
3938 if (print_summary || print_details) {
3939 if (!print_line(print_stream, 0, ""))
3942 if (!print_hex_data(print_stream, edt))
3944 if (!print_line(print_stream, 0, separator))
3953 switch (output_action) {
3956 return print_finale(print_stream);
3960 write_pdml_finale(stdout);
3962 write_psml_finale(stdout);
3963 return !ferror(stdout);
3966 write_fields_finale(output_fields, stdout);
3967 return !ferror(stdout);
3970 case WRITE_JSON_RAW:
3971 write_json_finale(stdout);
3972 return !ferror(stdout);
3975 return !ferror(stdout);
3978 g_assert_not_reached();
3984 cf_close(capture_file *cf)
3986 g_free(cf->filename);
3990 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
3995 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
3999 /* The open succeeded. Fill in the information for this file. */
4001 cf->provider.wth = wth;
4002 cf->f_datalen = 0; /* not used, but set it anyway */
4004 /* Set the file name because we need it to set the follow stream filter.
4005 XXX - is that still true? We need it for other reasons, though,
4007 cf->filename = g_strdup(fname);
4009 /* Indicate whether it's a permanent or temporary file. */
4010 cf->is_tempfile = is_tempfile;
4012 /* No user changes yet. */
4013 cf->unsaved_changes = FALSE;
4015 cf->cd_t = wtap_file_type_subtype(cf->provider.wth);
4016 cf->open_type = type;
4018 cf->drops_known = FALSE;
4020 cf->snap = wtap_snapshot_length(cf->provider.wth);
4021 nstime_set_zero(&cf->elapsed_time);
4022 cf->provider.ref = NULL;
4023 cf->provider.prev_dis = NULL;
4024 cf->provider.prev_cap = NULL;
4026 /* Create new epan session for dissection. */
4027 epan_free(cf->epan);
4028 cf->epan = tshark_epan_new(cf);
4030 wtap_set_cb_new_ipv4(cf->provider.wth, add_ipv4_name);
4031 wtap_set_cb_new_ipv6(cf->provider.wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4032 wtap_set_cb_new_secrets(cf->provider.wth, secrets_wtap_callback);
4037 cfile_open_failure_message("TShark", fname, *err, err_info);
4042 show_print_file_io_error(int err)
4047 cmdarg_err("Not all the packets could be printed because there is "
4048 "no space left on the file system.");
4053 cmdarg_err("Not all the packets could be printed because you are "
4054 "too close to, or over your disk quota.");
4059 cmdarg_err("An error occurred while printing packets: %s.",
4066 * General errors and warnings are reported with an console message
4070 failure_warning_message(const char *msg_format, va_list ap)
4072 fprintf(stderr, "tshark: ");
4073 vfprintf(stderr, msg_format, ap);
4074 fprintf(stderr, "\n");
4078 * Open/create errors are reported with an console message in TShark.
4081 open_failure_message(const char *filename, int err, gboolean for_writing)
4083 fprintf(stderr, "tshark: ");
4084 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4085 fprintf(stderr, "\n");
4089 * Read errors are reported with an console message in TShark.
4092 read_failure_message(const char *filename, int err)
4094 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4095 filename, g_strerror(err));
4099 * Write errors are reported with an console message in TShark.
4102 write_failure_message(const char *filename, int err)
4104 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4105 filename, g_strerror(err));
4108 static void reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
4110 if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
4113 fprintf(stderr, "resetting session.\n");
4115 epan_dissect_cleanup(edt);
4116 epan_free(cf->epan);
4118 cf->epan = tshark_epan_new(cf);
4119 epan_dissect_init(edt, cf->epan, tree, visual);
4124 * Report additional information for an error in command-line arguments.
4127 failure_message_cont(const char *msg_format, va_list ap)
4129 vfprintf(stderr, msg_format, ap);
4130 fprintf(stderr, "\n");
4134 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4139 * indent-tabs-mode: nil
4142 * vi: set shiftwidth=2 tabstop=8 expandtab:
4143 * :indentSize=2:tabSize=8:noTabs=true:
git.samba.org / metze / wireshark / wip.git / blob