3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
39 #ifdef HAVE_WINSOCK2_H
40 # include <winsock2.h>
48 # include <sys/capability.h>
51 #ifndef HAVE_GETOPT_LONG
52 #include "wsutil/wsgetopt.h"
57 #include <epan/exceptions.h>
58 #include <epan/epan-int.h>
59 #include <epan/epan.h>
61 #include <wsutil/clopts_common.h>
62 #include <wsutil/cmdarg_err.h>
63 #include <wsutil/crash_info.h>
64 #include <wsutil/filesystem.h>
65 #include <wsutil/file_util.h>
66 #include <wsutil/privileges.h>
67 #include <wsutil/report_message.h>
68 #include <ws_version_info.h>
69 #include <wiretap/wtap_opttypes.h>
70 #include <wiretap/pcapng.h>
73 #include <epan/timestamp.h>
74 #include <epan/packet.h>
76 #include <epan/wslua/init_wslua.h>
78 #include "frame_tvbuff.h"
79 #include <epan/disabled_protos.h>
80 #include <epan/prefs.h>
81 #include <epan/column.h>
82 #include <epan/decode_as.h>
83 #include <epan/print.h>
84 #include <epan/addr_resolv.h>
86 #include "ui/capture_ui_utils.h"
89 #include "ui/ui_util.h"
90 #include "ui/decode_as_utils.h"
91 #include "ui/filter_files.h"
92 #include "ui/cli/tshark-tap.h"
93 #include "ui/cli/tap-exportobject.h"
94 #include "ui/tap_export_pdu.h"
95 #include "ui/dissect_opts.h"
96 #include "ui/failure_message.h"
97 #if defined(HAVE_LIBSMI)
98 #include "epan/oids.h"
100 #if defined(HAVE_GEOIP)
101 #include "epan/geoip_db.h"
103 #include "register.h"
104 #include <epan/epan_dissect.h>
105 #include <epan/tap.h>
106 #include <epan/stat_tap_ui.h>
107 #include <epan/conversation_table.h>
108 #include <epan/srt_table.h>
109 #include <epan/rtd_table.h>
110 #include <epan/ex-opt.h>
111 #include <epan/exported_pdu.h>
113 #include "capture_opts.h"
115 #include "caputils/capture-pcap-util.h"
118 #include "caputils/capture_ifinfo.h"
120 #include "caputils/capture-wpcap.h"
121 #include <wsutil/os_version_info.h>
122 #include <wsutil/unicode-utils.h>
124 #include <capchild/capture_session.h>
125 #include <capchild/capture_sync.h>
126 #include <capture_info.h>
127 #endif /* HAVE_LIBPCAP */
129 #include <epan/funnel.h>
131 #include <wsutil/str_util.h>
132 #include <wsutil/utf8_entities.h>
139 #include <wsutil/plugins.h>
143 #define INVALID_OPTION 1
144 #define INVALID_INTERFACE 2
145 #define INVALID_FILE 2
146 #define INVALID_FILTER 2
147 #define INVALID_EXPORT 2
148 #define INVALID_CAPABILITY 2
149 #define INVALID_TAP 2
150 #define INVALID_DATA_LINK 2
151 #define INVALID_CAPTURE 2
152 #define INIT_FAILED 2
155 * values 128..65535 are capture+dissect options, 65536 is used by
156 * ui/commandline.c, so start tshark-specific options 1000 after this
158 #define LONGOPT_COLOR (65536+1000)
159 #define LONGOPT_NO_DUPLICATE_KEYS (65536+1001)
162 #define tshark_debug(...) g_warning(__VA_ARGS__)
164 #define tshark_debug(...)
167 static guint32 cum_bytes;
168 static const frame_data *ref;
169 static frame_data ref_frame;
170 static frame_data *prev_dis;
171 static frame_data prev_dis_frame;
172 static frame_data *prev_cap;
173 static frame_data prev_cap_frame;
175 static gboolean perform_two_pass_analysis;
176 static guint32 epan_auto_reset_count = 0;
177 static gboolean epan_auto_reset = FALSE;
180 * The way the packet decode is to be written.
183 WRITE_TEXT, /* summary or detail text */
184 WRITE_XML, /* PDML or PSML */
185 WRITE_FIELDS, /* User defined list of fields */
186 WRITE_JSON, /* JSON */
187 WRITE_JSON_RAW, /* JSON only raw hex */
188 WRITE_EK /* JSON bulk insert to Elasticsearch */
189 /* Add CSV and the like here */
192 static output_action_e output_action;
193 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
194 static gboolean print_packet_info; /* TRUE if we're to print packet information */
195 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
196 static gboolean print_details; /* TRUE if we're to print packet details information */
197 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
198 static gboolean line_buffered;
199 static gboolean really_quiet = FALSE;
200 static gchar* delimiter_char = " ";
201 static gboolean dissect_color = FALSE;
203 static print_format_e print_format = PR_FMT_TEXT;
204 static print_stream_t *print_stream = NULL;
206 static output_fields_t* output_fields = NULL;
207 static gchar **protocolfilter = NULL;
208 static pf_flags protocolfilter_flags = PF_NONE;
210 static gboolean no_duplicate_keys = FALSE;
211 static proto_node_children_grouper_func node_children_grouper = proto_node_group_children_by_unique;
213 /* The line separator used between packets, changeable via the -S option */
214 static const char *separator = "";
218 * TRUE if we're to print packet counts to keep track of captured packets.
220 static gboolean print_packet_counts;
222 static capture_options global_capture_opts;
223 static capture_session global_capture_session;
224 static info_data_t global_info_data;
227 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
228 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
231 static gboolean capture(void);
232 static void report_counts(void);
234 static BOOL WINAPI capture_cleanup(DWORD);
236 static void capture_cleanup(int);
238 static void report_counts_siginfo(int);
242 #else /* HAVE_LIBPCAP */
244 static char *output_file_name;
246 #endif /* HAVE_LIBPCAP */
248 static void reset_epan_mem(capture_file *cf, epan_dissect_t *edt, gboolean tree, gboolean visual);
249 static gboolean process_cap_file(capture_file *, char *, int, gboolean, int, gint64);
250 static gboolean process_packet_single_pass(capture_file *cf,
251 epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
252 const guchar *pd, guint tap_flags);
253 static void show_print_file_io_error(int err);
254 static gboolean write_preamble(capture_file *cf);
255 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
256 static gboolean write_finale(void);
258 static void failure_warning_message(const char *msg_format, va_list ap);
259 static void open_failure_message(const char *filename, int err,
260 gboolean for_writing);
261 static void read_failure_message(const char *filename, int err);
262 static void write_failure_message(const char *filename, int err);
263 static void failure_message_cont(const char *msg_format, va_list ap);
267 static GHashTable *output_only_tables = NULL;
270 const char *sstr; /* The short string */
271 const char *lstr; /* The long string */
275 string_compare(gconstpointer a, gconstpointer b)
277 return strcmp(((const struct string_elem *)a)->sstr,
278 ((const struct string_elem *)b)->sstr);
282 string_elem_print(gpointer data, gpointer not_used _U_)
284 fprintf(stderr, " %s - %s\n",
285 ((struct string_elem *)data)->sstr,
286 ((struct string_elem *)data)->lstr);
290 list_capture_types(void) {
292 struct string_elem *captypes;
295 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
297 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
298 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
299 if (wtap_dump_can_open(i)) {
300 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
301 captypes[i].lstr = wtap_file_type_subtype_string(i);
302 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
305 g_slist_foreach(list, string_elem_print, NULL);
311 list_read_capture_types(void) {
313 struct string_elem *captypes;
315 const char *magic = "Magic-value-based";
316 const char *heuristic = "Heuristics-based";
318 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
319 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
321 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
322 for (i = 0; open_routines[i].name != NULL; i++) {
323 captypes[i].sstr = open_routines[i].name;
324 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
325 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
327 g_slist_foreach(list, string_elem_print, NULL);
333 print_usage(FILE *output)
335 fprintf(output, "\n");
336 fprintf(output, "Usage: tshark [options] ...\n");
337 fprintf(output, "\n");
340 fprintf(output, "Capture interface:\n");
341 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
342 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
343 #ifdef HAVE_PCAP_CREATE
344 fprintf(output, " -s <snaplen> packet snapshot length (def: appropriate maximum)\n");
346 fprintf(output, " -s <snaplen> packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE_STANDARD);
348 fprintf(output, " -p don't capture in promiscuous mode\n");
349 #ifdef HAVE_PCAP_CREATE
350 fprintf(output, " -I capture in monitor mode, if available\n");
352 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
353 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
355 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
356 fprintf(output, " -D print list of interfaces and exit\n");
357 fprintf(output, " -L print list of link-layer types of iface and exit\n");
358 fprintf(output, "\n");
359 fprintf(output, "Capture stop conditions:\n");
360 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
361 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
362 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
363 fprintf(output, " files:NUM - stop after NUM files\n");
364 /*fprintf(output, "\n");*/
365 fprintf(output, "Capture output:\n");
366 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
367 fprintf(output, " interval:NUM - create time intervals of NUM secs\n");
368 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
369 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
370 #endif /* HAVE_LIBPCAP */
371 #ifdef HAVE_PCAP_REMOTE
372 fprintf(output, "RPCAP options:\n");
373 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
375 /*fprintf(output, "\n");*/
376 fprintf(output, "Input file:\n");
377 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
379 fprintf(output, "\n");
380 fprintf(output, "Processing:\n");
381 fprintf(output, " -2 perform a two-pass analysis\n");
382 fprintf(output, " -M <packet count> perform session auto reset\n");
383 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
384 fprintf(output, " (requires -2)\n");
385 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
386 fprintf(output, " syntax\n");
387 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
388 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\n");
389 fprintf(output, " -d %s ...\n", DECODE_AS_ARG_TEMPLATE);
390 fprintf(output, " \"Decode As\", see the man page for details\n");
391 fprintf(output, " Example: tcp.port==8888,http\n");
392 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
393 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
394 fprintf(output, " --enable-protocol <proto_name>\n");
395 fprintf(output, " enable dissection of proto_name\n");
396 fprintf(output, " --disable-protocol <proto_name>\n");
397 fprintf(output, " disable dissection of proto_name\n");
398 fprintf(output, " --enable-heuristic <short_name>\n");
399 fprintf(output, " enable dissection of heuristic protocol\n");
400 fprintf(output, " --disable-heuristic <short_name>\n");
401 fprintf(output, " disable dissection of heuristic protocol\n");
403 /*fprintf(output, "\n");*/
404 fprintf(output, "Output:\n");
405 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
406 fprintf(output, " (or to the standard output for \"-\")\n");
407 fprintf(output, " -C <config profile> start with specified configuration profile\n");
408 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
409 fprintf(output, " an empty \"-F\" option will list the file types\n");
410 fprintf(output, " -V add output of packet tree (Packet Details)\n");
411 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
412 fprintf(output, " separated\n");
413 fprintf(output, " -P print packet summary even when writing to a file\n");
414 fprintf(output, " -S <separator> the line separator to print between packets\n");
415 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
416 fprintf(output, " -T pdml|ps|psml|json|jsonraw|ek|tabs|text|fields|?\n");
417 fprintf(output, " format of text output (def: text)\n");
418 fprintf(output, " -j <protocolfilter> protocols layers filter if -T ek|pdml|json selected\n");
419 fprintf(output, " (e.g. \"ip ip.flags text\", filter does not expand child\n");
420 fprintf(output, " nodes, unless child is specified also in the filter)\n");
421 fprintf(output, " -J <protocolfilter> top level protocol filter if -T ek|pdml|json selected\n");
422 fprintf(output, " (e.g. \"http tcp\", filter which expands all child nodes)\n");
423 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
424 fprintf(output, " _ws.col.Info)\n");
425 fprintf(output, " this option can be repeated to print multiple fields\n");
426 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
427 fprintf(output, " bom=y|n print a UTF-8 BOM\n");
428 fprintf(output, " header=y|n switch headers on and off\n");
429 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
430 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
431 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
432 fprintf(output, " aggregator\n");
433 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
434 fprintf(output, " -t a|ad|d|dd|e|r|u|ud|? output format of time stamps (def: r: rel. to first)\n");
435 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
436 fprintf(output, " -l flush standard output after each packet\n");
437 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
438 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
439 fprintf(output, " -g enable group read access on the output file(s)\n");
440 fprintf(output, " -W n Save extra information in the file, if supported.\n");
441 fprintf(output, " n = write network address resolution information\n");
442 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
443 fprintf(output, " -U tap_name PDUs export mode, see the man page for details\n");
444 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
445 fprintf(output, " --capture-comment <comment>\n");
446 fprintf(output, " add a capture comment to the newly created\n");
447 fprintf(output, " output file (only for pcapng)\n");
448 fprintf(output, " --export-objects <protocol>,<destdir> save exported objects for a protocol to\n");
449 fprintf(output, " a directory named \"destdir\"\n");
450 fprintf(output, " --color color output text similarly to the Wireshark GUI,\n");
451 fprintf(output, " requires a terminal with 24-bit color support\n");
452 fprintf(output, " Also supplies color attributes to pdml and psml formats\n");
453 fprintf(output, " (Note that attributes are nonstandard)\n");
454 fprintf(output, " --no-duplicate-keys If -T json is specified, merge duplicate keys in an object\n");
455 fprintf(output, " into a single key with as value a json array containing all\n");
456 fprintf(output, " values");
458 fprintf(output, "\n");
459 fprintf(output, "Miscellaneous:\n");
460 fprintf(output, " -h display this help and exit\n");
461 fprintf(output, " -v display version info and exit\n");
462 fprintf(output, " -o <name>:<value> ... override preference setting\n");
463 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
464 fprintf(output, " -G [report] dump one of several available reports and exit\n");
465 fprintf(output, " default report=\"fields\"\n");
466 fprintf(output, " use \"-G ?\" for more help\n");
468 fprintf(output, "\n");
469 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
470 fprintf(output, "You might want to reset it\n");
471 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
472 fprintf(output, "\n");
478 glossary_option_help(void)
484 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
486 fprintf(output, "\n");
487 fprintf(output, "Usage: tshark -G [report]\n");
488 fprintf(output, "\n");
489 fprintf(output, "Glossary table reports:\n");
490 fprintf(output, " -G column-formats dump column format codes and exit\n");
491 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
492 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
493 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
494 fprintf(output, " -G fields dump fields glossary and exit\n");
495 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
496 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
497 fprintf(output, " -G plugins dump installed plugins and exit\n");
498 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
499 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
500 fprintf(output, "\n");
501 fprintf(output, "Preference reports:\n");
502 fprintf(output, " -G currentprefs dump current preferences and exit\n");
503 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
504 fprintf(output, " -G folders dump about:folders\n");
505 fprintf(output, "\n");
509 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
510 const gchar *message, gpointer user_data)
512 /* ignore log message, if log_level isn't interesting based
513 upon the console log preferences.
514 If the preferences haven't been loaded loaded yet, display the
517 The default console_log_level preference value is such that only
518 ERROR, CRITICAL and WARNING level messages are processed;
519 MESSAGE, INFO and DEBUG level messages are ignored.
521 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
522 ERROR and CRITICAL level messages so the current code is a behavioral
523 change. The current behavior is the same as in Wireshark.
525 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
526 prefs.console_log_level != 0) {
530 g_log_default_handler(log_domain, log_level, message, user_data);
535 print_current_user(void) {
536 gchar *cur_user, *cur_group;
538 if (started_with_special_privs()) {
539 cur_user = get_cur_username();
540 cur_group = get_cur_groupname();
541 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
542 cur_user, cur_group);
545 if (running_with_special_privs()) {
546 fprintf(stderr, " This could be dangerous.");
548 fprintf(stderr, "\n");
553 get_tshark_compiled_version_info(GString *str)
555 /* Capture libraries */
556 get_compiled_caplibs_version(str);
560 get_tshark_runtime_version_info(GString *str)
563 /* Capture libraries */
564 g_string_append(str, ", ");
565 get_runtime_caplibs_version(str);
568 /* stuff used by libwireshark */
569 epan_get_runtime_version_info(str);
575 const char *constpath;
577 #if defined(HAVE_LIBSMI) || defined(HAVE_GEOIP) || defined(HAVE_EXTCAP)
585 * Fetching the "File" dialogs folder not implemented.
586 * This is arguably just a pwd for a ui/cli .
590 printf("%-21s\t%s\n", "Temp:", g_get_tmp_dir());
593 path = get_persconffile_path("", FALSE);
594 printf("%-21s\t%s\n", "Personal configuration:", path);
598 constpath = get_datafile_dir();
599 if (constpath != NULL) {
600 printf("%-21s\t%s\n", "Global configuration:", constpath);
604 constpath = get_systemfile_dir();
605 printf("%-21s\t%s\n", "System:", constpath);
608 constpath = get_progfile_dir();
609 printf("%-21s\t%s\n", "Program:", constpath);
611 #if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
613 path = get_plugins_pers_dir();
615 printf("%-21s\t%s\n", "Personal Plugins:", path);
620 printf("%-21s\t%s\n", "Global Plugins:", get_plugin_dir());
625 path = geoip_db_get_paths();
627 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 10);
629 for(i = 0; resultArray[i]; i++)
630 printf("%-21s\t%s\n", "GeoIP path:", g_strstrip(resultArray[i]));
632 g_strfreev(resultArray);
638 path = oid_get_default_mib_path();
639 resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 10);
641 for(i = 0; resultArray[i]; i++)
642 printf("%-21s\t%s\n", "MIB/PIB path:", g_strstrip(resultArray[i]));
644 g_strfreev(resultArray);
650 constpath = get_extcap_dir();
652 resultArray = g_strsplit(constpath, G_SEARCHPATH_SEPARATOR_S, 10);
653 for(i = 0; resultArray[i]; i++)
654 printf("%-21s\t%s\n", "Extcap path:", g_strstrip(resultArray[i]));
656 g_strfreev(resultArray);
662 main(int argc, char *argv[])
664 GString *comp_info_str;
665 GString *runtime_info_str;
666 char *init_progfile_dir_error;
668 static const struct option long_options[] = {
669 {"help", no_argument, NULL, 'h'},
670 {"version", no_argument, NULL, 'v'},
671 LONGOPT_CAPTURE_COMMON
672 LONGOPT_DISSECT_COMMON
673 {"export-objects", required_argument, NULL, LONGOPT_EXPORT_OBJECTS},
674 {"color", no_argument, NULL, LONGOPT_COLOR},
675 {"no-duplicate-keys", no_argument, NULL, LONGOPT_NO_DUPLICATE_KEYS},
678 gboolean arg_error = FALSE;
686 volatile gboolean success;
687 volatile int exit_status = EXIT_SUCCESS;
689 gboolean list_link_layer_types = FALSE;
690 gboolean start_capture = FALSE;
694 gboolean capture_option_specified = FALSE;
696 gboolean quiet = FALSE;
697 #ifdef PCAP_NG_DEFAULT
698 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
700 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
702 volatile gboolean out_file_name_res = FALSE;
703 volatile int in_file_type = WTAP_TYPE_AUTO;
704 gchar *volatile cf_name = NULL;
705 gchar *rfilter = NULL;
706 gchar *dfilter = NULL;
707 #ifdef HAVE_PCAP_OPEN_DEAD
708 struct bpf_program fcode;
710 dfilter_t *rfcode = NULL;
711 dfilter_t *dfcode = NULL;
715 gchar *output_only = NULL;
716 gchar *volatile pdu_export_arg = NULL;
717 const char *volatile exp_pdu_filename = NULL;
718 exp_pdu_t exp_pdu_tap_data;
721 * The leading + ensures that getopt_long() does not permute the argv[]
724 * We have to make sure that the first getopt_long() preserves the content
725 * of argv[] for the subsequent getopt_long() call.
727 * We use getopt_long() in both cases to ensure that we're using a routine
728 * whose permutation behavior we can control in the same fashion on all
729 * platforms, and so that, if we ever need to process a long argument before
730 * doing further initialization, we can do so.
732 * Glibc and Solaris libc document that a leading + disables permutation
733 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
734 * and macOS don't document it, but do so anyway.
736 * We do *not* use a leading - because the behavior of a leading - is
737 * platform-dependent.
739 #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:"
741 static const char optstring[] = OPTSTRING;
743 tshark_debug("tshark started with %d args", argc);
745 /* Set the C-language locale to the native environment. */
746 setlocale(LC_ALL, "");
748 cmdarg_err_init(failure_warning_message, failure_message_cont);
751 arg_list_utf_16to8(argc, argv);
752 create_app_running_mutex();
753 #if !GLIB_CHECK_VERSION(2,31,0)
759 * Get credential information for later use, and drop privileges
760 * before doing anything else.
761 * Let the user know if anything happened.
763 init_process_policies();
764 relinquish_special_privs_perm();
765 print_current_user();
768 * Attempt to get the pathname of the directory containing the
771 init_progfile_dir_error = init_progfile_dir(argv[0], main);
772 if (init_progfile_dir_error != NULL) {
774 "tshark: Can't get pathname of directory containing the tshark program: %s.\n"
775 "It won't be possible to capture traffic.\n"
776 "Report this to the Wireshark developers.",
777 init_progfile_dir_error);
778 g_free(init_progfile_dir_error);
781 initialize_funnel_ops();
784 ws_init_dll_search_path();
786 /* Load wpcap if possible. Do this before collecting the run-time version information */
789 /* Warn the user if npf.sys isn't loaded. */
790 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
791 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
792 "capturing or\nlisting interfaces.\n");
794 #endif /* HAVE_LIBPCAP */
797 /* Get the compile-time version information string */
798 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
799 epan_get_compiled_version_info);
801 /* Get the run-time version information string */
802 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
804 /* Add it to the information to be reported on a crash. */
805 ws_add_crash_info("TShark (Wireshark) %s\n"
810 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
811 g_string_free(comp_info_str, TRUE);
812 g_string_free(runtime_info_str, TRUE);
814 /* Fail sometimes. Useful for testing fuzz scripts. */
815 /* if (g_random_int_range(0, 100) < 5) abort(); */
818 * In order to have the -X opts assigned before the wslua machine starts
819 * we need to call getopt_long before epan_init() gets called.
821 * In order to handle, for example, -o options, we also need to call it
822 * *after* epan_init() gets called, so that the dissectors have had a
823 * chance to register their preferences.
825 * XXX - can we do this all with one getopt_long() call, saving the
826 * arguments we can't handle until after initializing libwireshark,
827 * and then process them after initializing libwireshark?
831 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
833 case 'C': /* Configuration Profile */
834 if (profile_exists (optarg, FALSE)) {
835 set_profile_name (optarg);
837 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
838 exit_status = INVALID_OPTION;
842 case 'P': /* Print packet summary info even when writing to a file */
843 print_packet_info = TRUE;
844 print_summary = TRUE;
846 case 'O': /* Only output these protocols */
847 output_only = g_strdup(optarg);
849 case 'V': /* Verbose */
850 print_details = TRUE;
851 print_packet_info = TRUE;
853 case 'x': /* Print packet data in hex (and ASCII) */
855 /* The user asked for hex output, so let's ensure they get it,
856 * even if they're writing to a file.
858 print_packet_info = TRUE;
869 * Print packet summary information is the default, unless either -V or -x
870 * were specified and -P was not. Note that this is new behavior, which
871 * allows for the possibility of printing only hex/ascii output without
872 * necessarily requiring that either the summary or details be printed too.
874 if (print_summary == -1)
875 print_summary = (print_details || print_hex) ? FALSE : TRUE;
877 /** Send All g_log messages to our own handler **/
881 G_LOG_LEVEL_CRITICAL|
886 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
888 g_log_set_handler(NULL,
889 (GLogLevelFlags)log_flags,
890 tshark_log_handler, NULL /* user_data */);
891 g_log_set_handler(LOG_DOMAIN_MAIN,
892 (GLogLevelFlags)log_flags,
893 tshark_log_handler, NULL /* user_data */);
896 g_log_set_handler(LOG_DOMAIN_CAPTURE,
897 (GLogLevelFlags)log_flags,
898 tshark_log_handler, NULL /* user_data */);
899 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
900 (GLogLevelFlags)log_flags,
901 tshark_log_handler, NULL /* user_data */);
904 init_report_message(failure_warning_message, failure_warning_message,
905 open_failure_message, read_failure_message,
906 write_failure_message);
909 capture_opts_init(&global_capture_opts);
910 capture_session_init(&global_capture_session, &cfile);
913 timestamp_set_type(TS_RELATIVE);
914 timestamp_set_precision(TS_PREC_AUTO);
915 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
920 /* Register all the plugin types we have. */
921 epan_register_plugin_types(); /* Types known to libwireshark */
923 /* Scan for plugins. This does *not* call their registration routines;
924 that's done later. */
925 scan_plugins(REPORT_LOAD_FAILURE);
927 /* Register all libwiretap plugin modules. */
928 register_all_wiretap_modules();
931 /* Register all dissectors; we must do this before checking for the
932 "-G" flag, as the "-G" flag dumps information registered by the
933 dissectors, and we must do it before we read the preferences, in
934 case any dissectors register preferences. */
935 if (!epan_init(register_all_protocols, register_all_protocol_handoffs, NULL,
937 exit_status = INIT_FAILED;
941 /* Register all tap listeners; we do this before we parse the arguments,
942 as the "-z" argument can specify a registered tap. */
944 /* we register the plugin taps before the other taps because
945 stats_tree taps plugins will be registered as tap listeners
946 by stats_tree_stat.c and need to registered before that */
948 register_all_plugin_tap_listeners();
951 extcap_register_preferences();
953 register_all_tap_listeners();
954 conversation_table_set_gui_info(init_iousers);
955 hostlist_table_set_gui_info(init_hostlists);
956 srt_table_iterate_tables(register_srt_tables, NULL);
957 rtd_table_iterate_tables(register_rtd_tables, NULL);
958 new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
960 /* If invoked with the "-G" flag, we dump out information based on
961 the argument to the "-G" flag; if no argument is specified,
962 for backwards compatibility we dump out a glossary of display
965 XXX - we do this here, for now, to support "-G" with no arguments.
966 If none of our build or other processes uses "-G" with no arguments,
967 we can just process it with the other arguments. */
968 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
969 proto_initialize_all_prefixes();
972 proto_registrar_dump_fields();
974 if (strcmp(argv[2], "column-formats") == 0)
975 column_dump_column_formats();
976 else if (strcmp(argv[2], "currentprefs") == 0) {
977 epan_load_settings();
980 else if (strcmp(argv[2], "decodes") == 0)
981 dissector_dump_decodes();
982 else if (strcmp(argv[2], "defaultprefs") == 0)
984 else if (strcmp(argv[2], "dissector-tables") == 0)
985 dissector_dump_dissector_tables();
986 else if (strcmp(argv[2], "fieldcount") == 0) {
987 /* return value for the test suite */
988 exit_status = proto_registrar_dump_fieldcount();
990 } else if (strcmp(argv[2], "fields") == 0)
991 proto_registrar_dump_fields();
992 else if (strcmp(argv[2], "folders") == 0)
994 else if (strcmp(argv[2], "ftypes") == 0)
995 proto_registrar_dump_ftypes();
996 else if (strcmp(argv[2], "heuristic-decodes") == 0)
997 dissector_dump_heur_decodes();
998 else if (strcmp(argv[2], "plugins") == 0) {
1003 wslua_plugins_dump_all();
1006 else if (strcmp(argv[2], "protocols") == 0)
1007 proto_registrar_dump_protocols();
1008 else if (strcmp(argv[2], "values") == 0)
1009 proto_registrar_dump_values();
1010 else if (strcmp(argv[2], "?") == 0)
1011 glossary_option_help();
1012 else if (strcmp(argv[2], "-?") == 0)
1013 glossary_option_help();
1015 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1016 exit_status = INVALID_OPTION;
1020 exit_status = EXIT_SUCCESS;
1024 tshark_debug("tshark reading settings");
1026 /* Load libwireshark settings from the current profile. */
1027 prefs_p = epan_load_settings();
1029 read_filter_list(CFILTER_LIST);
1031 cap_file_init(&cfile);
1033 /* Print format defaults to this. */
1034 print_format = PR_FMT_TEXT;
1035 delimiter_char = " ";
1037 output_fields = output_fields_new();
1040 * To reset the options parser, set optreset to 1 on platforms that
1041 * have optreset (documented in *BSD and macOS, apparently present but
1042 * not documented in Solaris - the Illumos repository seems to
1043 * suggest that the first Solaris getopt_long(), at least as of 2004,
1044 * was based on the NetBSD one, it had optreset) and set optind to 1,
1045 * and set optind to 0 otherwise (documented as working in the GNU
1046 * getopt_long(). Setting optind to 0 didn't originally work in the
1047 * NetBSD one, but that was added later - we don't want to depend on
1048 * it if we have optreset).
1050 * Also reset opterr to 1, so that error messages are printed by
1053 #ifdef HAVE_OPTRESET
1061 /* Now get our args */
1062 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1064 case '2': /* Perform two pass analysis */
1065 if(epan_auto_reset){
1066 cmdarg_err("-2 does not support auto session reset.");
1069 perform_two_pass_analysis = TRUE;
1072 if(perform_two_pass_analysis){
1073 cmdarg_err("-M does not support two pass analysis.");
1076 epan_auto_reset_count = get_positive_int(optarg, "epan reset count");
1077 epan_auto_reset = TRUE;
1079 case 'a': /* autostop criteria */
1080 case 'b': /* Ringbuffer option */
1081 case 'c': /* Capture x packets */
1082 case 'f': /* capture filter */
1083 case 'g': /* enable group read access on file(s) */
1084 case 'i': /* Use interface x */
1085 case 'p': /* Don't capture in promiscuous mode */
1086 #ifdef HAVE_PCAP_REMOTE
1087 case 'A': /* Authentication */
1089 #ifdef HAVE_PCAP_CREATE
1090 case 'I': /* Capture in monitor mode, if available */
1092 case 's': /* Set the snapshot (capture) length */
1093 case 'w': /* Write to capture file x */
1094 case 'y': /* Set the pcap data link type */
1095 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1096 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1097 case 'B': /* Buffer size */
1100 exit_status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1101 if (exit_status != 0) {
1107 * Output file name, if we're reading a file and writing to another
1110 output_file_name = optarg;
1112 capture_option_specified = TRUE;
1118 /* already processed; just ignore it now */
1120 case 'D': /* Print a list of capture devices and exit */
1122 if_list = capture_interface_list(&err, &err_str,NULL);
1123 if (if_list == NULL) {
1125 cmdarg_err("There are no interfaces on which a capture can be done");
1127 cmdarg_err("%s", err_str);
1130 exit_status = INVALID_INTERFACE;
1133 capture_opts_print_interfaces(if_list);
1134 free_interface_list(if_list);
1135 exit_status = EXIT_SUCCESS;
1138 capture_option_specified = TRUE;
1144 output_fields_add(output_fields, optarg);
1148 if (!output_fields_set_option(output_fields, optarg)) {
1149 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1150 output_fields_list_options(stderr);
1151 exit_status = INVALID_OPTION;
1156 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1157 if (out_file_type < 0) {
1158 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1159 list_capture_types();
1160 exit_status = INVALID_OPTION;
1165 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1168 protocolfilter_flags = PF_INCLUDE_CHILDREN;
1169 protocolfilter = wmem_strsplit(wmem_epan_scope(), optarg, " ", -1);
1171 case 'W': /* Select extra information to save in our capture file */
1172 /* This is patterned after the -N flag which may not be the best idea. */
1173 if (strchr(optarg, 'n')) {
1174 out_file_name_res = TRUE;
1176 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1177 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1178 exit_status = INVALID_OPTION;
1182 case 'H': /* Read address to name mappings from a hosts file */
1183 if (! add_hosts_file(optarg))
1185 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1186 exit_status = INVALID_OPTION;
1189 out_file_name_res = TRUE;
1192 case 'h': /* Print help and exit */
1193 printf("TShark (Wireshark) %s\n"
1194 "Dump and analyze network traffic.\n"
1195 "See https://www.wireshark.org for more information.\n",
1196 get_ws_vcs_version_info());
1197 print_usage(stdout);
1198 exit_status = EXIT_SUCCESS;
1201 case 'l': /* "Line-buffer" standard output */
1202 /* The ANSI C standard does not appear to *require* that a line-buffered
1203 stream be flushed to the host environment whenever a newline is
1204 written, it just says that, on such a stream, characters "are
1205 intended to be transmitted to or from the host environment as a
1206 block when a new-line character is encountered".
1208 The Visual C++ 6.0 C implementation doesn't do what is intended;
1209 even if you set a stream to be line-buffered, it still doesn't
1210 flush the buffer at the end of every line.
1212 The whole reason for the "-l" flag in either tcpdump or TShark
1213 is to allow the output of a live capture to be piped to a program
1214 or script and to have that script see the information for the
1215 packet as soon as it's printed, rather than having to wait until
1216 a standard I/O buffer fills up.
1218 So, if the "-l" flag is specified, we flush the standard output
1219 at the end of a packet. This will do the right thing if we're
1220 printing packet summary lines, and, as we print the entire protocol
1221 tree for a single packet without waiting for anything to happen,
1222 it should be as good as line-buffered mode if we're printing
1223 protocol trees - arguably even better, as it may do fewer
1225 line_buffered = TRUE;
1227 case 'L': /* Print list of link-layer types and exit */
1229 list_link_layer_types = TRUE;
1231 capture_option_specified = TRUE;
1235 case 'o': /* Override preference from command line */
1237 char *errmsg = NULL;
1239 switch (prefs_set_pref(optarg, &errmsg)) {
1244 case PREFS_SET_SYNTAX_ERR:
1245 cmdarg_err("Invalid -o flag \"%s\"%s%s", optarg,
1246 errmsg ? ": " : "", errmsg ? errmsg : "");
1248 exit_status = INVALID_OPTION;
1252 case PREFS_SET_NO_SUCH_PREF:
1253 case PREFS_SET_OBSOLETE:
1254 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1255 exit_status = INVALID_OPTION;
1261 case 'q': /* Quiet */
1264 case 'Q': /* Really quiet */
1266 really_quiet = TRUE;
1268 case 'r': /* Read capture file x */
1269 cf_name = g_strdup(optarg);
1271 case 'R': /* Read file filter */
1275 /* already processed; just ignore it now */
1277 case 'S': /* Set the line Separator to be printed between packets */
1280 case 'T': /* printing Type */
1281 print_packet_info = TRUE;
1282 if (strcmp(optarg, "text") == 0) {
1283 output_action = WRITE_TEXT;
1284 print_format = PR_FMT_TEXT;
1285 } else if (strcmp(optarg, "tabs") == 0) {
1286 output_action = WRITE_TEXT;
1287 print_format = PR_FMT_TEXT;
1288 delimiter_char = "\t";
1289 } else if (strcmp(optarg, "ps") == 0) {
1290 output_action = WRITE_TEXT;
1291 print_format = PR_FMT_PS;
1292 } else if (strcmp(optarg, "pdml") == 0) {
1293 output_action = WRITE_XML;
1294 print_details = TRUE; /* Need details */
1295 print_summary = FALSE; /* Don't allow summary */
1296 } else if (strcmp(optarg, "psml") == 0) {
1297 output_action = WRITE_XML;
1298 print_details = FALSE; /* Don't allow details */
1299 print_summary = TRUE; /* Need summary */
1300 } else if (strcmp(optarg, "fields") == 0) {
1301 output_action = WRITE_FIELDS;
1302 print_details = TRUE; /* Need full tree info */
1303 print_summary = FALSE; /* Don't allow summary */
1304 } else if (strcmp(optarg, "json") == 0) {
1305 output_action = WRITE_JSON;
1306 print_details = TRUE; /* Need details */
1307 print_summary = FALSE; /* Don't allow summary */
1308 } else if (strcmp(optarg, "ek") == 0) {
1309 output_action = WRITE_EK;
1310 print_details = TRUE; /* Need details */
1311 print_summary = FALSE; /* Don't allow summary */
1312 } else if (strcmp(optarg, "jsonraw") == 0) {
1313 output_action = WRITE_JSON_RAW;
1314 print_details = TRUE; /* Need details */
1315 print_summary = FALSE; /* Don't allow summary */
1318 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1319 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1320 "\t specified by the -E option.\n"
1321 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1322 "\t details of a decoded packet. This information is equivalent to\n"
1323 "\t the packet details printed with the -V flag.\n"
1324 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1325 "\t the packets, or a multi-line view of the details of each of\n"
1326 "\t the packets, depending on whether the -V flag was specified.\n"
1327 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1328 "\t summary information of a decoded packet. This information is\n"
1329 "\t equivalent to the information shown in the one-line summary\n"
1330 "\t printed by default.\n"
1331 "\t\"json\" Packet Summary, an JSON-based format for the details\n"
1332 "\t summary information of a decoded packet. This information is \n"
1333 "\t equivalent to the packet details printed with the -V flag.\n"
1334 "\t\"jsonraw\" Packet Details, a JSON-based format for machine parsing\n"
1335 "\t including only raw hex decoded fields (same as -T json -x but\n"
1336 "\t without text decoding, only raw fields included). \n"
1337 "\t\"ek\" Packet Details, an EK JSON-based format for the bulk insert \n"
1338 "\t into elastic search cluster. This information is \n"
1339 "\t equivalent to the packet details printed with the -V flag.\n"
1340 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1341 "\t packets, or a multi-line view of the details of each of the\n"
1342 "\t packets, depending on whether the -V flag was specified.\n"
1343 "\t This is the default.\n"
1344 "\t\"tabs\" Similar to the text report except that each column of the\n"
1345 "\t human-readable one-line summary is delimited with an ASCII\n"
1346 "\t horizontal tab character.");
1347 exit_status = INVALID_OPTION;
1351 case 'U': /* Export PDUs to file */
1353 GSList *export_pdu_tap_name_list = NULL;
1356 cmdarg_err("A tap name is required. Valid names are:");
1357 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)) {
1358 cmdarg_err("%s\n", (const char*)(export_pdu_tap_name_list->data));
1360 exit_status = INVALID_OPTION;
1363 pdu_export_arg = g_strdup(optarg);
1366 case 'v': /* Show version and exit */
1367 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1368 epan_get_compiled_version_info);
1369 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1370 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1371 g_string_free(comp_info_str, TRUE);
1372 g_string_free(runtime_info_str, TRUE);
1373 /* We don't really have to cleanup here, but it's a convenient way to test
1374 * start-up and shut-down of the epan library without any UI-specific
1375 * cruft getting in the way. Makes the results of running
1376 * $ ./tools/valgrind-wireshark -n
1377 * much more useful. */
1382 exit_status = EXIT_SUCCESS;
1384 case 'O': /* Only output these protocols */
1385 /* already processed; just ignore it now */
1387 case 'V': /* Verbose */
1388 /* already processed; just ignore it now */
1390 case 'x': /* Print packet data in hex (and ASCII) */
1391 /* already processed; just ignore it now */
1394 /* already processed; just ignore it now */
1400 /* We won't call the init function for the stat this soon
1401 as it would disallow MATE's fields (which are registered
1402 by the preferences set callback) from being used as
1403 part of a tap filter. Instead, we just add the argument
1404 to a list of stat arguments. */
1405 if (strcmp("help", optarg) == 0) {
1406 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1407 list_stat_cmd_args();
1408 exit_status = EXIT_SUCCESS;
1411 if (!process_stat_cmd_arg(optarg)) {
1412 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1413 list_stat_cmd_args();
1414 exit_status = INVALID_OPTION;
1418 case 'd': /* Decode as rule */
1419 case 'K': /* Kerberos keytab file */
1420 case 'n': /* No name resolution */
1421 case 'N': /* Select what types of addresses/port #s to resolve */
1422 case 't': /* Time stamp type */
1423 case 'u': /* Seconds type */
1424 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1425 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1426 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1427 case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
1428 if (!dissect_opts_handle_opt(opt, optarg)) {
1429 exit_status = INVALID_OPTION;
1433 case LONGOPT_EXPORT_OBJECTS: /* --export-objects */
1434 if (strcmp("help", optarg) == 0) {
1435 fprintf(stderr, "tshark: The available export object types for the \"--export-objects\" option are:\n");
1436 eo_list_object_types();
1437 exit_status = EXIT_SUCCESS;
1440 if (!eo_tap_opt_add(optarg)) {
1441 exit_status = INVALID_OPTION;
1445 case LONGOPT_COLOR: /* print in color where appropriate */
1446 dissect_color = TRUE;
1448 case LONGOPT_NO_DUPLICATE_KEYS:
1449 no_duplicate_keys = TRUE;
1450 node_children_grouper = proto_node_group_children_by_json_key;
1453 case '?': /* Bad flag - print usage message */
1456 list_capture_types();
1459 print_usage(stderr);
1461 exit_status = INVALID_OPTION;
1467 if (no_duplicate_keys && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW) {
1468 cmdarg_err("--no-duplicate-keys can only be used with \"-T json\" and \"-T jsonraw\"");
1469 exit_status = INVALID_OPTION;
1473 /* If we specified output fields, but not the output field type... */
1474 if ((WRITE_FIELDS != output_action && WRITE_XML != output_action && WRITE_JSON != output_action && WRITE_EK != output_action) && 0 != output_fields_num_fields(output_fields)) {
1475 cmdarg_err("Output fields were specified with \"-e\", "
1476 "but \"-Tek, -Tfields, -Tjson or -Tpdml\" was not specified.");
1477 exit_status = INVALID_OPTION;
1479 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1480 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1481 "specified with \"-e\".");
1483 exit_status = INVALID_OPTION;
1487 if (dissect_color) {
1488 if (!color_filters_init(&err_msg, NULL)) {
1489 fprintf(stderr, "%s\n", err_msg);
1494 /* If no capture filter or display filter has been specified, and there are
1495 still command-line arguments, treat them as the tokens of a capture
1496 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1497 flag was specified. */
1498 if (optind < argc) {
1499 if (cf_name != NULL) {
1500 if (dfilter != NULL) {
1501 cmdarg_err("Display filters were specified both with \"-d\" "
1502 "and with additional command-line arguments.");
1503 exit_status = INVALID_OPTION;
1506 dfilter = get_args_as_string(argc, argv, optind);
1511 if (global_capture_opts.default_options.cfilter) {
1512 cmdarg_err("A default capture filter was specified both with \"-f\""
1513 " and with additional command-line arguments.");
1514 exit_status = INVALID_OPTION;
1517 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1518 interface_options interface_opts;
1519 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1520 if (interface_opts.cfilter == NULL) {
1521 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1522 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1523 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1525 cmdarg_err("A capture filter was specified both with \"-f\""
1526 " and with additional command-line arguments.");
1527 exit_status = INVALID_OPTION;
1531 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1533 capture_option_specified = TRUE;
1539 if (!global_capture_opts.saving_to_file) {
1540 /* We're not saving the capture to a file; if "-q" wasn't specified,
1541 we should print packet information */
1543 print_packet_info = TRUE;
1545 /* We're saving to a file; if we're writing to the standard output.
1546 and we'll also be writing dissected packets to the standard
1547 output, reject the request. At best, we could redirect that
1548 to the standard error; we *can't* write both to the standard
1549 output and have either of them be useful. */
1550 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1551 cmdarg_err("You can't write both raw packet data and dissected packets"
1552 " to the standard output.");
1553 exit_status = INVALID_OPTION;
1558 /* We're not saving the capture to a file; if "-q" wasn't specified,
1559 we should print packet information */
1561 print_packet_info = TRUE;
1564 #ifndef HAVE_LIBPCAP
1565 if (capture_option_specified)
1566 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1569 print_usage(stderr);
1570 exit_status = INVALID_OPTION;
1575 if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
1576 cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
1577 exit_status = INVALID_OPTION;
1582 if (output_only != NULL) {
1585 if (!print_details) {
1586 cmdarg_err("-O requires -V");
1587 exit_status = INVALID_OPTION;
1591 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1592 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1593 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1597 if (rfilter != NULL && !perform_two_pass_analysis) {
1598 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1599 exit_status = INVALID_OPTION;
1604 if (list_link_layer_types) {
1605 /* We're supposed to list the link-layer types for an interface;
1606 did the user also specify a capture file to be read? */
1608 /* Yes - that's bogus. */
1609 cmdarg_err("You can't specify -L and a capture file to be read.");
1610 exit_status = INVALID_OPTION;
1613 /* No - did they specify a ring buffer option? */
1614 if (global_capture_opts.multi_files_on) {
1615 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1616 exit_status = INVALID_OPTION;
1622 * "-r" was specified, so we're reading a capture file.
1623 * Capture options don't apply here.
1626 /* We don't support capture filters when reading from a capture file
1627 (the BPF compiler doesn't support all link-layer types that we
1628 support in capture files we read). */
1629 if (global_capture_opts.default_options.cfilter) {
1630 cmdarg_err("Only read filters, not capture filters, "
1631 "can be specified when reading a capture file.");
1632 exit_status = INVALID_OPTION;
1635 if (global_capture_opts.multi_files_on) {
1636 cmdarg_err("Multiple capture files requested, but "
1637 "a capture isn't being done.");
1638 exit_status = INVALID_OPTION;
1641 if (global_capture_opts.has_file_duration) {
1642 cmdarg_err("Switching capture files after a time period was specified, but "
1643 "a capture isn't being done.");
1644 exit_status = INVALID_OPTION;
1647 if (global_capture_opts.has_file_interval) {
1648 cmdarg_err("Switching capture files after a time interval was specified, but "
1649 "a capture isn't being done.");
1650 exit_status = INVALID_OPTION;
1653 if (global_capture_opts.has_ring_num_files) {
1654 cmdarg_err("A ring buffer of capture files was specified, but "
1655 "a capture isn't being done.");
1656 exit_status = INVALID_OPTION;
1659 if (global_capture_opts.has_autostop_files) {
1660 cmdarg_err("A maximum number of capture files was specified, but "
1661 "a capture isn't being done.");
1662 exit_status = INVALID_OPTION;
1665 if (global_capture_opts.capture_comment) {
1666 cmdarg_err("A capture comment was specified, but "
1667 "a capture isn't being done.\nThere's no support for adding "
1668 "a capture comment to an existing capture file.");
1669 exit_status = INVALID_OPTION;
1673 /* Note: TShark now allows the restriction of a _read_ file by packet count
1674 * and byte count as well as a write file. Other autostop options remain valid
1675 * only for a write file.
1677 if (global_capture_opts.has_autostop_duration) {
1678 cmdarg_err("A maximum capture time was specified, but "
1679 "a capture isn't being done.");
1680 exit_status = INVALID_OPTION;
1685 * "-r" wasn't specified, so we're doing a live capture.
1687 if (perform_two_pass_analysis) {
1688 /* Two-pass analysis doesn't work with live capture since it requires us
1689 * to buffer packets until we've read all of them, but a live capture
1690 * has no useful/meaningful definition of "all" */
1691 cmdarg_err("Live captures do not support two-pass analysis.");
1692 exit_status = INVALID_OPTION;
1696 if (global_capture_opts.saving_to_file) {
1697 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1699 /* When capturing, we only support writing pcap or pcap-ng format. */
1700 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1701 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1702 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1703 exit_status = INVALID_OPTION;
1706 if (global_capture_opts.capture_comment &&
1707 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1708 cmdarg_err("A capture comment can only be written to a pcapng file.");
1709 exit_status = INVALID_OPTION;
1712 if (global_capture_opts.multi_files_on) {
1713 /* Multiple-file mode doesn't work under certain conditions:
1714 a) it doesn't work if you're writing to the standard output;
1715 b) it doesn't work if you're writing to a pipe;
1717 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1718 cmdarg_err("Multiple capture files requested, but "
1719 "the capture is being written to the standard output.");
1720 exit_status = INVALID_OPTION;
1723 if (global_capture_opts.output_to_pipe) {
1724 cmdarg_err("Multiple capture files requested, but "
1725 "the capture file is a pipe.");
1726 exit_status = INVALID_OPTION;
1729 if (!global_capture_opts.has_autostop_filesize &&
1730 !global_capture_opts.has_file_duration &&
1731 !global_capture_opts.has_file_interval) {
1732 cmdarg_err("Multiple capture files requested, but "
1733 "no maximum capture file size, duration or interval was specified.");
1734 exit_status = INVALID_OPTION;
1738 /* Currently, we don't support read or display filters when capturing
1739 and saving the packets. */
1740 if (rfilter != NULL) {
1741 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1742 exit_status = INVALID_OPTION;
1745 if (dfilter != NULL) {
1746 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1747 exit_status = INVALID_OPTION;
1750 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1752 /* They didn't specify a "-w" flag, so we won't be saving to a
1753 capture file. Check for options that only make sense if
1754 we're saving to a file. */
1755 if (global_capture_opts.has_autostop_filesize) {
1756 cmdarg_err("Maximum capture file size specified, but "
1757 "capture isn't being saved to a file.");
1758 exit_status = INVALID_OPTION;
1761 if (global_capture_opts.multi_files_on) {
1762 cmdarg_err("Multiple capture files requested, but "
1763 "the capture isn't being saved to a file.");
1764 exit_status = INVALID_OPTION;
1767 if (global_capture_opts.capture_comment) {
1768 cmdarg_err("A capture comment was specified, but "
1769 "the capture isn't being saved to a file.");
1770 exit_status = INVALID_OPTION;
1779 /* Start windows sockets */
1780 result = WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1783 exit_status = INIT_FAILED;
1788 /* Notify all registered modules that have had any of their preferences
1789 changed either from one of the preferences file or from the command
1790 line that their preferences have changed. */
1793 /* At this point MATE will have registered its field array so we can
1794 have a tap filter with one of MATE's late-registered fields as part
1795 of the filter. We can now process all the "-z" arguments. */
1796 start_requested_stats();
1798 /* We can also enable specified taps for export object */
1799 start_exportobjects();
1801 /* At this point MATE will have registered its field array so we can
1802 check if the fields specified by the user are all good.
1806 GSList *invalid_fields = output_fields_valid(output_fields);
1807 if (invalid_fields != NULL) {
1809 cmdarg_err("Some fields aren't valid:");
1810 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
1811 cmdarg_err_cont("\t%s", (gchar *)it->data);
1813 g_slist_free(invalid_fields);
1814 exit_status = INVALID_OPTION;
1819 /* We currently don't support taps, or printing dissected packets,
1820 if we're writing to a pipe. */
1821 if (global_capture_opts.saving_to_file &&
1822 global_capture_opts.output_to_pipe) {
1823 if (tap_listeners_require_dissection()) {
1824 cmdarg_err("Taps aren't supported when saving to a pipe.");
1825 exit_status = INVALID_OPTION;
1828 if (print_packet_info) {
1829 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1830 exit_status = INVALID_OPTION;
1836 if (ex_opt_count("read_format") > 0) {
1837 const gchar* name = ex_opt_get_next("read_format");
1838 in_file_type = open_info_name_to_type(name);
1839 if (in_file_type == WTAP_TYPE_AUTO) {
1840 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1841 list_read_capture_types();
1842 exit_status = INVALID_OPTION;
1847 timestamp_set_type(global_dissect_options.time_format);
1850 * Enabled and disabled protocols and heuristic dissectors as per
1851 * command-line options.
1853 if (!setup_enabled_and_disabled_protocols()) {
1854 exit_status = INVALID_OPTION;
1858 /* Build the column format array */
1859 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1862 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1863 capture_opts_trim_ring_num_files(&global_capture_opts);
1866 if (rfilter != NULL) {
1867 tshark_debug("Compiling read filter: '%s'", rfilter);
1868 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
1869 cmdarg_err("%s", err_msg);
1875 #ifdef HAVE_PCAP_OPEN_DEAD
1879 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1881 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1883 " Note: That read filter code looks like a valid capture filter;\n"
1884 " maybe you mixed them up?");
1890 exit_status = INVALID_INTERFACE;
1894 cfile.rfcode = rfcode;
1896 if (dfilter != NULL) {
1897 tshark_debug("Compiling display filter: '%s'", dfilter);
1898 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1899 cmdarg_err("%s", err_msg);
1905 #ifdef HAVE_PCAP_OPEN_DEAD
1909 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1911 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1913 " Note: That display filter code looks like a valid capture filter;\n"
1914 " maybe you mixed them up?");
1920 exit_status = INVALID_FILTER;
1924 cfile.dfcode = dfcode;
1926 if (print_packet_info) {
1927 /* If we're printing as text or PostScript, we have
1928 to create a print stream. */
1929 if (output_action == WRITE_TEXT) {
1930 switch (print_format) {
1933 print_stream = print_stream_text_stdio_new(stdout);
1937 print_stream = print_stream_ps_stdio_new(stdout);
1941 g_assert_not_reached();
1946 /* PDU export requested. Take the ownership of the '-w' file, apply tap
1947 * filters and start tapping. */
1948 if (pdu_export_arg) {
1949 const char *exp_pdu_tap_name = pdu_export_arg;
1950 const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
1951 char *exp_pdu_error;
1956 cmdarg_err("PDUs export requires a capture file (specify with -r).");
1957 exit_status = INVALID_OPTION;
1960 /* Take ownership of the '-w' output file. */
1962 exp_pdu_filename = global_capture_opts.save_file;
1963 global_capture_opts.save_file = NULL;
1965 exp_pdu_filename = output_file_name;
1966 output_file_name = NULL;
1968 if (exp_pdu_filename == NULL) {
1969 cmdarg_err("PDUs export requires an output file (-w).");
1970 exit_status = INVALID_OPTION;
1974 exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
1976 if (exp_pdu_error) {
1977 cmdarg_err("Cannot register tap: %s", exp_pdu_error);
1978 g_free(exp_pdu_error);
1979 exit_status = INVALID_TAP;
1983 exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
1985 cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
1986 exit_status = INVALID_FILE;
1990 /* Activate the export PDU tap */
1991 comment = g_strdup_printf("Dump of PDUs from %s", cf_name);
1992 err = exp_pdu_open(&exp_pdu_tap_data, exp_fd, comment);
1994 cfile_dump_open_failure_message("TShark", exp_pdu_filename, err,
1995 WTAP_FILE_TYPE_SUBTYPE_PCAPNG);
1997 exit_status = INVALID_EXPORT;
2002 /* We have to dissect each packet if:
2004 we're printing information about each packet;
2006 we're using a read filter on the packets;
2008 we're using a display filter on the packets;
2010 we're exporting PDUs;
2012 we're using any taps that need dissection. */
2013 do_dissection = print_packet_info || rfcode || dfcode || pdu_export_arg ||
2014 tap_listeners_require_dissection() || dissect_color;
2015 tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2018 tshark_debug("tshark: Opening capture file: %s", cf_name);
2020 * We're reading a capture file.
2022 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2027 exit_status = INVALID_FILE;
2031 /* Process the packets in the file */
2032 tshark_debug("tshark: invoking process_cap_file() to process the packets");
2035 success = process_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2036 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2037 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2039 success = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2042 CATCH(OutOfMemoryError) {
2046 "Sorry, but TShark has to terminate now.\n"
2048 "More information and workarounds can be found at\n"
2049 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2055 /* We still dump out the results of taps, etc., as we might have
2056 read some packets; however, we exit with an error status. */
2060 if (pdu_export_arg) {
2061 err = exp_pdu_close(&exp_pdu_tap_data);
2063 cfile_close_failure_message(exp_pdu_filename, err);
2066 g_free(pdu_export_arg);
2069 tshark_debug("tshark: no capture file specified");
2070 /* No capture file specified, so we're supposed to do a live capture
2071 or get a list of link-layer types for a live capture device;
2072 do we have support for live captures? */
2074 /* if no interface was specified, pick a default */
2075 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2076 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2077 if (exit_status != 0) {
2081 /* if requested, list the link layer types and exit */
2082 if (list_link_layer_types) {
2085 /* Get the list of link-layer types for the capture devices. */
2086 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2087 interface_options interface_opts;
2088 if_capabilities_t *caps;
2089 char *auth_str = NULL;
2091 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2092 #ifdef HAVE_PCAP_REMOTE
2093 if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
2094 auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
2097 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
2100 cmdarg_err("%s", err_str);
2102 exit_status = INVALID_CAPABILITY;
2105 if (caps->data_link_types == NULL) {
2106 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2107 exit_status = INVALID_DATA_LINK;
2110 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2111 free_if_capabilities(caps);
2113 exit_status = EXIT_SUCCESS;
2118 * If the standard error isn't a terminal, don't print packet counts,
2119 * as they won't show up on the user's terminal and they'll get in
2120 * the way of error messages in the file (to which we assume the
2121 * standard error was redirected; if it's redirected to the null
2122 * device, there's no point in printing packet counts anyway).
2124 * Otherwise, if we're printing packet information and the standard
2125 * output is a terminal (which we assume means the standard output and
2126 * error are going to the same terminal), don't print packet counts,
2127 * as they'll get in the way of the packet information.
2129 * Otherwise, if the user specified -q, don't print packet counts.
2131 * Otherwise, print packet counts.
2133 * XXX - what if the user wants to do a live capture, doesn't want
2134 * to save it to a file, doesn't want information printed for each
2135 * packet, does want some "-z" statistic, and wants packet counts
2136 * so they know whether they're seeing any packets? -q will
2137 * suppress the information printed for each packet, but it'll
2138 * also suppress the packet counts.
2140 if (!ws_isatty(ws_fileno(stderr)))
2141 print_packet_counts = FALSE;
2142 else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
2143 print_packet_counts = FALSE;
2145 print_packet_counts = FALSE;
2147 print_packet_counts = TRUE;
2149 if (print_packet_info) {
2150 if (!write_preamble(&cfile)) {
2151 show_print_file_io_error(errno);
2152 exit_status = INVALID_FILE;
2157 tshark_debug("tshark: performing live capture");
2159 * XXX - this returns FALSE if an error occurred, but it also
2160 * returns FALSE if the capture stops because a time limit
2161 * was reached (and possibly other limits), so we can't assume
2162 * it means an error.
2164 * The capture code is a bit twisty, so it doesn't appear to
2165 * be an easy fix. We just ignore the return value for now.
2166 * Instead, pass on the exit status from the capture child.
2169 exit_status = global_capture_session.fork_child_status;
2171 if (print_packet_info) {
2172 if (!write_finale()) {
2173 show_print_file_io_error(errno);
2177 /* No - complain. */
2178 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2179 exit_status = INVALID_CAPTURE;
2186 if (cfile.frames != NULL) {
2187 free_frame_data_sequence(cfile.frames);
2188 cfile.frames = NULL;
2191 draw_tap_listeners(TRUE);
2192 funnel_dump_all_text_windows();
2193 epan_free(cfile.epan);
2199 output_fields_free(output_fields);
2200 output_fields = NULL;
2203 destroy_print_stream(print_stream);
2205 capture_opts_cleanup(&global_capture_opts);
2207 col_cleanup(&cfile.cinfo);
2208 free_filter_lists();
2218 /*#define USE_BROKEN_G_MAIN_LOOP*/
2220 #ifdef USE_BROKEN_G_MAIN_LOOP
2223 gboolean loop_running = FALSE;
2225 guint32 packet_count = 0;
2228 typedef struct pipe_input_tag {
2231 ws_process_id *child_process;
2232 pipe_input_cb_t input_cb;
2233 guint pipe_input_id;
2235 GMutex *callback_running;
2239 static pipe_input_t pipe_input;
2242 /* The timer has expired, see if there's stuff to read from the pipe,
2243 if so, do the callback */
2245 pipe_timer_cb(gpointer data)
2251 pipe_input_t *pipe_input_p = data;
2252 gint iterations = 0;
2254 g_mutex_lock (pipe_input_p->callback_running);
2256 /* try to read data from the pipe only 5 times, to avoid blocking */
2257 while(iterations < 5) {
2258 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2260 /* Oddly enough although Named pipes don't work on win9x,
2261 PeekNamedPipe does !!! */
2262 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2263 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2265 /* Get the child process exit status */
2266 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2269 /* If the Peek returned an error, or there are bytes to be read
2270 or the childwatcher thread has terminated then call the normal
2272 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2274 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2276 /* And call the real handler */
2277 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2278 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2279 /* pipe closed, return false so that the timer is stopped */
2280 g_mutex_unlock (pipe_input_p->callback_running);
2285 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2286 /* No data, stop now */
2293 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2295 g_mutex_unlock (pipe_input_p->callback_running);
2297 /* we didn't stopped the timer, so let it run */
2304 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2307 pipe_input.source = source;
2308 pipe_input.child_process = child_process;
2309 pipe_input.user_data = user_data;
2310 pipe_input.input_cb = input_cb;
2313 #if GLIB_CHECK_VERSION(2,31,0)
2314 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2315 g_mutex_init(pipe_input.callback_running);
2317 pipe_input.callback_running = g_mutex_new();
2319 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2320 do this but that doesn't cover all win32 platforms. GTK can do
2321 this but doesn't seem to work over processes. Attempt to do
2322 something similar here, start a timer and check for data on every
2324 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2325 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2329 static const nstime_t *
2330 tshark_get_frame_ts(void *data, guint32 frame_num)
2332 capture_file *cf = (capture_file *) data;
2334 if (ref && ref->num == frame_num)
2335 return &ref->abs_ts;
2337 if (prev_dis && prev_dis->num == frame_num)
2338 return &prev_dis->abs_ts;
2340 if (prev_cap && prev_cap->num == frame_num)
2341 return &prev_cap->abs_ts;
2344 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2346 return (fd) ? &fd->abs_ts : NULL;
2353 tshark_epan_new(capture_file *cf)
2355 epan_t *epan = epan_new();
2358 epan->get_frame_ts = tshark_get_frame_ts;
2359 epan->get_interface_name = cap_file_get_interface_name;
2360 epan->get_interface_description = cap_file_get_interface_description;
2361 epan->get_user_comment = NULL;
2373 #ifdef USE_TSHARK_SELECT
2377 struct sigaction action, oldaction;
2380 /* Create new dissection section. */
2381 epan_free(cfile.epan);
2382 cfile.epan = tshark_epan_new(&cfile);
2385 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2386 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2388 /* Catch SIGINT and SIGTERM and, if we get either of them,
2389 clean up and exit. If SIGHUP isn't being ignored, catch
2390 it too and, if we get it, clean up and exit.
2392 We restart any read that was in progress, so that it doesn't
2393 disrupt reading from the sync pipe. The signal handler tells
2394 the capture child to finish; it will report that it finished,
2395 or will exit abnormally, so we'll stop reading from the sync
2396 pipe, pick up the exit status, and quit. */
2397 memset(&action, 0, sizeof(action));
2398 action.sa_handler = capture_cleanup;
2399 action.sa_flags = SA_RESTART;
2400 sigemptyset(&action.sa_mask);
2401 sigaction(SIGTERM, &action, NULL);
2402 sigaction(SIGINT, &action, NULL);
2403 sigaction(SIGHUP, NULL, &oldaction);
2404 if (oldaction.sa_handler == SIG_DFL)
2405 sigaction(SIGHUP, &action, NULL);
2408 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2409 quiet mode, report the number of packets we've captured.
2411 Again, restart any read that was in progress, so that it doesn't
2412 disrupt reading from the sync pipe. */
2413 action.sa_handler = report_counts_siginfo;
2414 action.sa_flags = SA_RESTART;
2415 sigemptyset(&action.sa_mask);
2416 sigaction(SIGINFO, &action, NULL);
2417 #endif /* SIGINFO */
2420 global_capture_session.state = CAPTURE_PREPARING;
2422 /* Let the user know which interfaces were chosen. */
2423 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2424 interface_options interface_opts;
2426 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2427 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2428 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2429 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2431 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2432 if (really_quiet == FALSE)
2433 fprintf(stderr, "Capturing on %s\n", str->str);
2435 g_string_free(str, TRUE);
2437 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
2442 /* the actual capture loop
2444 * XXX - glib doesn't seem to provide any event based loop handling.
2446 * XXX - for whatever reason,
2447 * calling g_main_loop_new() ends up in 100% cpu load.
2449 * But that doesn't matter: in UNIX we can use select() to find an input
2450 * source with something to do.
2452 * But that doesn't matter because we're in a CLI (that doesn't need to
2453 * update a GUI or something at the same time) so it's OK if we block
2454 * trying to read from the pipe.
2456 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2457 * wrong (but I leave it there in case I am...).
2460 #ifdef USE_TSHARK_SELECT
2462 FD_SET(pipe_input.source, &readfds);
2465 loop_running = TRUE;
2469 while (loop_running)
2471 #ifdef USE_TSHARK_SELECT
2472 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2476 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2478 } else if (ret == 1) {
2480 /* Call the real handler */
2481 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2482 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2485 #ifdef USE_TSHARK_SELECT
2490 CATCH(OutOfMemoryError) {
2494 "Sorry, but TShark has to terminate now.\n"
2496 "More information and workarounds can be found at\n"
2497 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2504 /* capture child detected an error */
2506 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2508 cmdarg_err("%s", error_msg);
2509 cmdarg_err_cont("%s", secondary_error_msg);
2513 /* capture child detected an capture filter related error */
2515 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2517 capture_options *capture_opts = cap_session->capture_opts;
2518 dfilter_t *rfcode = NULL;
2519 interface_options interface_opts;
2521 g_assert(i < capture_opts->ifaces->len);
2522 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2524 if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
2526 "Invalid capture filter \"%s\" for interface '%s'.\n"
2528 "That string looks like a valid display filter; however, it isn't a valid\n"
2529 "capture filter (%s).\n"
2531 "Note that display filters and capture filters don't have the same syntax,\n"
2532 "so you can't use most display filter expressions as capture filters.\n"
2534 "See the User's Guide for a description of the capture filter syntax.",
2535 interface_opts.cfilter, interface_opts.descr, error_message);
2536 dfilter_free(rfcode);
2539 "Invalid capture filter \"%s\" for interface '%s'.\n"
2541 "That string isn't a valid capture filter (%s).\n"
2542 "See the User's Guide for a description of the capture filter syntax.",
2543 interface_opts.cfilter, interface_opts.descr, error_message);
2548 /* capture child tells us we have a new (or the first) capture file */
2550 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2552 capture_options *capture_opts = cap_session->capture_opts;
2553 capture_file *cf = (capture_file *) cap_session->cf;
2554 gboolean is_tempfile;
2557 if (cap_session->state == CAPTURE_PREPARING) {
2558 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2560 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2562 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2564 /* free the old filename */
2565 if (capture_opts->save_file != NULL) {
2567 /* we start a new capture file, close the old one (if we had one before) */
2568 if (cf->state != FILE_CLOSED) {
2569 if (cf->wth != NULL) {
2570 wtap_close(cf->wth);
2573 cf->state = FILE_CLOSED;
2576 g_free(capture_opts->save_file);
2577 is_tempfile = FALSE;
2579 epan_free(cf->epan);
2580 cf->epan = tshark_epan_new(cf);
2582 /* we didn't had a save_file before, must be a tempfile */
2586 /* save the new filename */
2587 capture_opts->save_file = g_strdup(new_file);
2589 /* if we are in real-time mode, open the new file now */
2590 if (do_dissection) {
2591 /* this is probably unecessary, but better safe than sorry */
2592 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2593 /* Attempt to open the capture file and set up to read from it. */
2594 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2598 /* Don't unlink (delete) the save file - leave it around,
2599 for debugging purposes. */
2600 g_free(capture_opts->save_file);
2601 capture_opts->save_file = NULL;
2606 cap_session->state = CAPTURE_RUNNING;
2612 /* capture child tells us we have new packets to read */
2614 capture_input_new_packets(capture_session *cap_session, int to_read)
2620 capture_file *cf = (capture_file *)cap_session->cf;
2621 gboolean filtering_tap_listeners;
2626 * Prevent a SIGINFO handler from writing to the standard error while
2627 * we're doing so or writing to the standard output; instead, have it
2628 * just set a flag telling us to print that information when we're done.
2631 #endif /* SIGINFO */
2633 /* Do we have any tap listeners with filters? */
2634 filtering_tap_listeners = have_filtering_tap_listeners();
2636 /* Get the union of the flags for all tap listeners. */
2637 tap_flags = union_of_tap_listener_flags();
2639 if (do_dissection) {
2640 gboolean create_proto_tree;
2641 epan_dissect_t *edt;
2644 * Determine whether we need to create a protocol tree.
2647 * we're going to apply a read filter;
2649 * we're going to apply a display filter;
2651 * we're going to print the protocol tree;
2653 * one of the tap listeners is going to apply a filter;
2655 * one of the tap listeners requires a protocol tree;
2657 * a postdissector wants field values or protocols
2658 * on the first pass;
2660 * we have custom columns (which require field values, which
2661 * currently requires that we build a protocol tree).
2664 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2665 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
2666 have_custom_cols(&cf->cinfo) || dissect_color);
2668 /* The protocol tree will be "visible", i.e., printed, only if we're
2669 printing packet details, which is true if we're printing stuff
2670 ("print_packet_info" is true) and we're in verbose mode
2671 ("packet_details" is true). */
2672 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2674 while (to_read-- && cf->wth) {
2675 wtap_cleareof(cf->wth);
2676 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2677 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
2679 /* read from file failed, tell the capture child to stop */
2680 sync_pipe_stop(cap_session);
2681 wtap_close(cf->wth);
2684 ret = process_packet_single_pass(cf, edt, data_offset,
2686 wtap_buf_ptr(cf->wth), tap_flags);
2689 /* packet successfully read and gone through the "Read Filter" */
2694 epan_dissect_free(edt);
2698 * Dumpcap's doing all the work; we're not doing any dissection.
2699 * Count all the packets it wrote.
2701 packet_count += to_read;
2704 if (print_packet_counts) {
2705 /* We're printing packet counts. */
2706 if (packet_count != 0) {
2707 fprintf(stderr, "\r%u ", packet_count);
2708 /* stderr could be line buffered */
2715 * Allow SIGINFO handlers to write.
2720 * If a SIGINFO handler asked us to write out capture counts, do so.
2724 #endif /* SIGINFO */
2730 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2731 /* Report the count only if we aren't printing a packet count
2732 as packets arrive. */
2733 fprintf(stderr, "%u packet%s captured\n", packet_count,
2734 plurality(packet_count, "", "s"));
2737 infoprint = FALSE; /* we just reported it */
2738 #endif /* SIGINFO */
2743 report_counts_siginfo(int signum _U_)
2745 int sav_errno = errno;
2746 /* If we've been told to delay printing, just set a flag asking
2747 that we print counts (if we're supposed to), otherwise print
2748 the count of packets captured (if we're supposed to). */
2755 #endif /* SIGINFO */
2758 /* capture child detected any packet drops? */
2760 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2762 if (print_packet_counts) {
2763 /* We're printing packet counts to stderr.
2764 Send a newline so that we move to the line after the packet count. */
2765 fprintf(stderr, "\n");
2769 /* We're printing packet counts to stderr.
2770 Send a newline so that we move to the line after the packet count. */
2771 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2777 * Capture child closed its side of the pipe, report any error and
2778 * do the required cleanup.
2781 capture_input_closed(capture_session *cap_session, gchar *msg)
2783 capture_file *cf = (capture_file *) cap_session->cf;
2786 fprintf(stderr, "tshark: %s\n", msg);
2790 if (cf != NULL && cf->wth != NULL) {
2791 wtap_close(cf->wth);
2792 if (cf->is_tempfile) {
2793 ws_unlink(cf->filename);
2796 #ifdef USE_BROKEN_G_MAIN_LOOP
2797 /*g_main_loop_quit(loop);*/
2798 g_main_loop_quit(loop);
2800 loop_running = FALSE;
2809 capture_cleanup(DWORD ctrltype _U_)
2811 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2812 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2813 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2814 like SIGTERM at least when the machine's shutting down.
2816 For now, we handle them all as indications that we should clean up
2817 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2820 We must return TRUE so that no other handler - such as one that would
2821 terminate the process - gets called.
2823 XXX - for some reason, typing ^C to TShark, if you run this in
2824 a Cygwin console window in at least some versions of Cygwin,
2825 causes TShark to terminate immediately; this routine gets
2826 called, but the main loop doesn't get a chance to run and
2827 exit cleanly, at least if this is compiled with Microsoft Visual
2828 C++ (i.e., it's a property of the Cygwin console window or Bash;
2829 it happens if TShark is not built with Cygwin - for all I know,
2830 building it with Cygwin may make the problem go away). */
2832 /* tell the capture child to stop */
2833 sync_pipe_stop(&global_capture_session);
2835 /* don't stop our own loop already here, otherwise status messages and
2836 * cleanup wouldn't be done properly. The child will indicate the stop of
2837 * everything by calling capture_input_closed() later */
2843 capture_cleanup(int signum _U_)
2845 /* tell the capture child to stop */
2846 sync_pipe_stop(&global_capture_session);
2848 /* don't stop our own loop already here, otherwise status messages and
2849 * cleanup wouldn't be done properly. The child will indicate the stop of
2850 * everything by calling capture_input_closed() later */
2853 #endif /* HAVE_LIBPCAP */
2856 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2857 gint64 offset, struct wtap_pkthdr *whdr,
2864 /* The frame number of this packet is one more than the count of
2865 frames in this packet. */
2866 framenum = cf->count + 1;
2868 /* If we're not running a display filter and we're not printing any
2869 packet information, we don't need to do a dissection. This means
2870 that all packets can be marked as 'passed'. */
2873 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2875 /* If we're going to run a read filter or a display filter, set up to
2876 do a dissection and do so. (This is the first pass of two passes
2877 over the packets, so we will not be printing any information
2878 from the dissection or running taps on the packet; if we're doing
2879 any of that, we'll do it in the second pass.) */
2881 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2882 gbl_resolv_flags.transport_name)
2883 /* Grab any resolved addresses */
2884 host_name_lookup_process();
2886 /* If we're running a read filter, prime the epan_dissect_t with that
2889 epan_dissect_prime_with_dfilter(edt, cf->rfcode);
2892 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2894 /* This is the first pass, so prime the epan_dissect_t with the
2895 hfids postdissectors want on the first pass. */
2896 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
2898 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2900 if (ref == &fdlocal) {
2901 ref_frame = fdlocal;
2905 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2907 /* Run the read filter if we have one. */
2909 passed = dfilter_apply_edt(cf->rfcode, edt);
2913 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2914 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2916 /* If we're not doing dissection then there won't be any dependent frames.
2917 * More importantly, edt.pi.dependent_frames won't be initialized because
2918 * epan hasn't been initialized.
2919 * if we *are* doing dissection, then mark the dependent frames, but only
2920 * if a display filter was given and it matches this packet.
2922 if (edt && cf->dfcode) {
2923 if (dfilter_apply_edt(cf->dfcode, edt)) {
2924 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2930 /* if we don't add it to the frame_data_sequence, clean it up right now
2932 frame_data_destroy(&fdlocal);
2936 epan_dissect_reset(edt);
2942 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
2943 frame_data *fdata, struct wtap_pkthdr *phdr,
2944 Buffer *buf, guint tap_flags)
2949 /* If we're not running a display filter and we're not printing any
2950 packet information, we don't need to do a dissection. This means
2951 that all packets can be marked as 'passed'. */
2954 /* If we're going to print packet information, or we're going to
2955 run a read filter, or we're going to process taps, set up to
2956 do a dissection and do so. (This is the second pass of two
2957 passes over the packets; that's the pass where we print
2958 packet information or run taps.) */
2960 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2961 gbl_resolv_flags.transport_name)
2962 /* Grab any resolved addresses */
2963 host_name_lookup_process();
2965 /* If we're running a display filter, prime the epan_dissect_t with that
2968 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
2970 col_custom_prime_edt(edt, &cf->cinfo);
2972 /* We only need the columns if either
2973 1) some tap needs the columns
2975 2) we're printing packet info but we're *not* verbose; in verbose
2976 mode, we print the protocol tree, not the protocol summary.
2978 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
2983 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2990 if (dissect_color) {
2991 color_filters_prime_edt(edt);
2992 fdata->flags.need_colorize = 1;
2995 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2997 /* Run the read/display filter if we have one. */
2999 passed = dfilter_apply_edt(cf->dfcode, edt);
3003 frame_data_set_after_dissect(fdata, &cum_bytes);
3004 /* Process this packet. */
3005 if (print_packet_info) {
3006 /* We're printing packet information; print the information for
3008 print_packet(cf, edt);
3010 /* If we're doing "line-buffering", flush the standard output
3011 after every packet. See the comment above, for the "-l"
3012 option, for an explanation of why we do that. */
3016 if (ferror(stdout)) {
3017 show_print_file_io_error(errno);
3026 epan_dissect_reset(edt);
3028 return passed || fdata->flags.dependent_of_displayed;
3032 process_cap_file(capture_file *cf, char *save_file, int out_file_type,
3033 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3035 gboolean success = TRUE;
3037 int snapshot_length;
3040 int err = 0, err_pass1 = 0;
3041 gchar *err_info = NULL, *err_info_pass1 = NULL;
3043 gboolean filtering_tap_listeners;
3045 GArray *shb_hdrs = NULL;
3046 wtapng_iface_descriptions_t *idb_inf = NULL;
3047 GArray *nrb_hdrs = NULL;
3048 struct wtap_pkthdr phdr;
3050 epan_dissect_t *edt = NULL;
3051 char *shb_user_appl;
3053 wtap_phdr_init(&phdr);
3055 idb_inf = wtap_file_get_idb_info(cf->wth);
3056 #ifdef PCAP_NG_DEFAULT
3057 if (idb_inf->interface_data->len > 1) {
3058 linktype = WTAP_ENCAP_PER_PACKET;
3060 linktype = wtap_file_encap(cf->wth);
3063 linktype = wtap_file_encap(cf->wth);
3065 if (save_file != NULL) {
3066 /* Set up to write to the capture file. */
3067 snapshot_length = wtap_snapshot_length(cf->wth);
3068 if (snapshot_length == 0) {
3069 /* Snapshot length of input file not known. */
3070 snapshot_length = WTAP_MAX_PACKET_SIZE_STANDARD;
3072 tshark_debug("tshark: snapshot_length = %d", snapshot_length);
3074 shb_hdrs = wtap_file_get_shb_for_new_file(cf->wth);
3075 nrb_hdrs = wtap_file_get_nrb_for_new_file(cf->wth);
3077 /* If we don't have an application name add Tshark */
3078 if (wtap_block_get_string_option_value(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
3079 /* this is free'd by wtap_block_free() later */
3080 wtap_block_add_string_option_format(g_array_index(shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "TShark (Wireshark) %s", get_ws_vcs_version_info());
3083 if (linktype != WTAP_ENCAP_PER_PACKET &&
3084 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3085 tshark_debug("tshark: writing PCAP format to %s", save_file);
3086 if (strcmp(save_file, "-") == 0) {
3087 /* Write to the standard output. */
3088 pdh = wtap_dump_open_stdout(out_file_type, linktype,
3089 snapshot_length, FALSE /* compressed */, &err);
3091 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3092 snapshot_length, FALSE /* compressed */, &err);
3096 tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
3097 if (strcmp(save_file, "-") == 0) {
3098 /* Write to the standard output. */
3099 pdh = wtap_dump_open_stdout_ng(out_file_type, linktype,
3100 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3102 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3103 snapshot_length, FALSE /* compressed */, shb_hdrs, idb_inf, nrb_hdrs, &err);
3111 /* We couldn't set up to write to the capture file. */
3112 cfile_dump_open_failure_message("TShark", save_file, err, out_file_type);
3117 /* Set up to print packet information. */
3118 if (print_packet_info) {
3119 if (!write_preamble(cf)) {
3120 show_print_file_io_error(errno);
3130 /* Do we have any tap listeners with filters? */
3131 filtering_tap_listeners = have_filtering_tap_listeners();
3133 /* Get the union of the flags for all tap listeners. */
3134 tap_flags = union_of_tap_listener_flags();
3136 if (perform_two_pass_analysis) {
3139 tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3141 /* Allocate a frame_data_sequence for all the frames. */
3142 cf->frames = new_frame_data_sequence();
3144 if (do_dissection) {
3145 gboolean create_proto_tree;
3148 * Determine whether we need to create a protocol tree.
3151 * we're going to apply a read filter;
3153 * we're going to apply a display filter;
3155 * a postdissector wants field values or protocols
3156 * on the first pass.
3159 (cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
3161 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3163 /* We're not going to display the protocol tree on this pass,
3164 so it's not going to be "visible". */
3165 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3168 tshark_debug("tshark: reading records for first pass");
3169 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3170 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3171 wtap_buf_ptr(cf->wth))) {
3172 /* Stop reading if we have the maximum number of packets;
3173 * When the -c option has not been used, max_packet_count
3174 * starts at 0, which practically means, never stop reading.
3175 * (unless we roll over max_packet_count ?)
3177 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3178 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3179 max_packet_count, data_offset, max_byte_count);
3180 err = 0; /* This is not an error */
3187 * If we got a read error on the first pass, remember the error, so
3188 * but do the second pass, so we can at least process the packets we
3189 * read, and then report the first-pass error after the second pass
3190 * (and before we report any second-pass errors), so all the the
3191 * errors show up at the end.
3195 err_info_pass1 = err_info;
3201 epan_dissect_free(edt);
3205 /* Close the sequential I/O side, to free up memory it requires. */
3206 wtap_sequential_close(cf->wth);
3208 /* Allow the protocol dissectors to free up memory that they
3209 * don't need after the sequential run-through of the packets. */
3210 postseq_cleanup_all_protocols();
3214 ws_buffer_init(&buf, 1500);
3216 tshark_debug("tshark: done with first pass");
3218 if (do_dissection) {
3219 gboolean create_proto_tree;
3222 * Determine whether we need to create a protocol tree.
3225 * we're going to apply a display filter;
3227 * we're going to print the protocol tree;
3229 * one of the tap listeners requires a protocol tree;
3231 * we have custom columns (which require field values, which
3232 * currently requires that we build a protocol tree).
3235 (cf->dfcode || print_details || filtering_tap_listeners ||
3236 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
3238 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3240 /* The protocol tree will be "visible", i.e., printed, only if we're
3241 printing packet details, which is true if we're printing stuff
3242 ("print_packet_info" is true) and we're in verbose mode
3243 ("packet_details" is true). */
3244 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3247 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3248 fdata = frame_data_sequence_find(cf->frames, framenum);
3249 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3251 tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3252 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3254 /* Either there's no read filtering or this packet passed the
3255 filter, so, if we're writing to a capture file, write
3258 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3259 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3260 /* Error writing to a capture file */
3261 tshark_debug("tshark: error writing to a capture file (%d)", err);
3263 /* Report the error.
3264 XXX - framenum is not necessarily the frame number in
3265 the input file if there was a read filter. */
3266 cfile_write_failure_message("TShark", cf->filename, save_file,
3267 err, err_info, framenum,
3269 wtap_dump_close(pdh, &err);
3270 wtap_block_array_free(shb_hdrs);
3271 wtap_block_array_free(nrb_hdrs);
3280 epan_dissect_free(edt);
3284 ws_buffer_free(&buf);
3286 tshark_debug("tshark: done with second pass");
3289 /* !perform_two_pass_analysis */
3291 gboolean create_proto_tree = FALSE;
3292 tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3294 if (do_dissection) {
3296 * Determine whether we need to create a protocol tree.
3299 * we're going to apply a read filter;
3301 * we're going to apply a display filter;
3303 * we're going to print the protocol tree;
3305 * one of the tap listeners is going to apply a filter;
3307 * one of the tap listeners requires a protocol tree;
3309 * a postdissector wants field values or protocols
3310 * on the first pass;
3312 * we have custom columns (which require field values, which
3313 * currently requires that we build a protocol tree).
3316 (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3317 (tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
3318 have_custom_cols(&cf->cinfo) || dissect_color);
3320 tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3322 /* The protocol tree will be "visible", i.e., printed, only if we're
3323 printing packet details, which is true if we're printing stuff
3324 ("print_packet_info" is true) and we're in verbose mode
3325 ("packet_details" is true). */
3326 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3329 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3332 tshark_debug("tshark: processing packet #%d", framenum);
3334 reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
3336 if (process_packet_single_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3337 wtap_buf_ptr(cf->wth), tap_flags)) {
3338 /* Either there's no read filtering or this packet passed the
3339 filter, so, if we're writing to a capture file, write
3342 tshark_debug("tshark: writing packet #%d to outfile", framenum);
3343 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3344 /* Error writing to a capture file */
3345 tshark_debug("tshark: error writing to a capture file (%d)", err);
3346 cfile_write_failure_message("TShark", cf->filename, save_file,
3347 err, err_info, framenum, out_file_type);
3348 wtap_dump_close(pdh, &err);
3349 wtap_block_array_free(shb_hdrs);
3350 wtap_block_array_free(nrb_hdrs);
3355 /* Stop reading if we have the maximum number of packets;
3356 * When the -c option has not been used, max_packet_count
3357 * starts at 0, which practically means, never stop reading.
3358 * (unless we roll over max_packet_count ?)
3360 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3361 tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3362 max_packet_count, data_offset, max_byte_count);
3363 err = 0; /* This is not an error */
3369 epan_dissect_free(edt);
3374 wtap_phdr_cleanup(&phdr);
3376 if (err != 0 || err_pass1 != 0) {
3377 tshark_debug("tshark: something failed along the line (%d)", err);
3379 * Print a message noting that the read failed somewhere along the line.
3381 * If we're printing packet data, and the standard output and error are
3382 * going to the same place, flush the standard output, so everything
3383 * buffered up is written, and then print a newline to the standard error
3384 * before printing the error message, to separate it from the packet
3385 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3386 * the _fstat() documentation at Microsoft doesn't indicate whether
3387 * st_ino is even supported.)
3390 if (print_packet_info) {
3391 ws_statb64 stat_stdout, stat_stderr;
3393 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3394 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3395 stat_stdout.st_ino == stat_stderr.st_ino) {
3397 fprintf(stderr, "\n");
3402 if (err_pass1 != 0) {
3403 /* Error on pass 1 of two-pass processing. */
3404 cfile_read_failure_message("TShark", cf->filename, err_pass1,
3408 /* Error on pass 2 of two-pass processing or on the only pass of
3409 one-pass processing. */
3410 cfile_read_failure_message("TShark", cf->filename, err, err_info);
3414 if (save_file != NULL) {
3415 if (pdh && out_file_name_res) {
3416 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3417 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3418 wtap_file_type_subtype_short_string(out_file_type));
3421 /* Now close the capture file. */
3422 if (!wtap_dump_close(pdh, &err)) {
3423 cfile_close_failure_message(save_file, err);
3427 if (print_packet_info) {
3428 if (!write_finale()) {
3429 show_print_file_io_error(errno);
3436 wtap_close(cf->wth);
3439 wtap_block_array_free(shb_hdrs);
3440 wtap_block_array_free(nrb_hdrs);
3446 process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
3447 struct wtap_pkthdr *whdr, const guchar *pd,
3454 /* Count this packet. */
3457 /* If we're not running a display filter and we're not printing any
3458 packet information, we don't need to do a dissection. This means
3459 that all packets can be marked as 'passed'. */
3462 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3464 /* If we're going to print packet information, or we're going to
3465 run a read filter, or we're going to process taps, set up to
3466 do a dissection and do so. (This is the one and only pass
3467 over the packets, so, if we'll be printing packet information
3468 or running taps, we'll be doing it here.) */
3470 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3471 gbl_resolv_flags.transport_name))
3472 /* Grab any resolved addresses */
3473 host_name_lookup_process();
3475 /* If we're running a filter, prime the epan_dissect_t with that
3478 epan_dissect_prime_with_dfilter(edt, cf->dfcode);
3480 /* This is the first and only pass, so prime the epan_dissect_t
3481 with the hfids postdissectors want on the first pass. */
3482 prime_epan_dissect_with_postdissector_wanted_hfids(edt);
3484 col_custom_prime_edt(edt, &cf->cinfo);
3486 /* We only need the columns if either
3487 1) some tap needs the columns
3489 2) we're printing packet info but we're *not* verbose; in verbose
3490 mode, we print the protocol tree, not the protocol summary.
3492 3) there is a column mapped as an individual field */
3493 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3498 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3500 if (ref == &fdata) {
3505 if (dissect_color) {
3506 color_filters_prime_edt(edt);
3507 fdata.flags.need_colorize = 1;
3510 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3512 /* Run the filter if we have it. */
3514 passed = dfilter_apply_edt(cf->dfcode, edt);
3518 frame_data_set_after_dissect(&fdata, &cum_bytes);
3520 /* Process this packet. */
3521 if (print_packet_info) {
3522 /* We're printing packet information; print the information for
3524 print_packet(cf, edt);
3526 /* If we're doing "line-buffering", flush the standard output
3527 after every packet. See the comment above, for the "-l"
3528 option, for an explanation of why we do that. */
3532 if (ferror(stdout)) {
3533 show_print_file_io_error(errno);
3538 /* this must be set after print_packet() [bug #8160] */
3539 prev_dis_frame = fdata;
3540 prev_dis = &prev_dis_frame;
3543 prev_cap_frame = fdata;
3544 prev_cap = &prev_cap_frame;
3547 epan_dissect_reset(edt);
3548 frame_data_destroy(&fdata);
3554 write_preamble(capture_file *cf)
3556 switch (output_action) {
3559 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3563 write_pdml_preamble(stdout, cf->filename);
3565 write_psml_preamble(&cf->cinfo, stdout);
3566 return !ferror(stdout);
3569 write_fields_preamble(output_fields, stdout);
3570 return !ferror(stdout);
3573 case WRITE_JSON_RAW:
3574 write_json_preamble(stdout);
3575 return !ferror(stdout);
3578 return !ferror(stdout);
3581 g_assert_not_reached();
3587 get_line_buf(size_t len)
3589 static char *line_bufp = NULL;
3590 static size_t line_buf_len = 256;
3591 size_t new_line_buf_len;
3593 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3594 new_line_buf_len *= 2)
3596 if (line_bufp == NULL) {
3597 line_buf_len = new_line_buf_len;
3598 line_bufp = (char *)g_malloc(line_buf_len + 1);
3600 if (new_line_buf_len > line_buf_len) {
3601 line_buf_len = new_line_buf_len;
3602 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3609 put_string(char *dest, const char *str, size_t str_len)
3611 memcpy(dest, str, str_len);
3612 dest[str_len] = '\0';
3616 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3620 for (i = str_len; i < str_with_spaces; i++)
3623 put_string(dest, str, str_len);
3627 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3631 memcpy(dest, str, str_len);
3632 for (i = str_len; i < str_with_spaces; i++)
3635 dest[str_with_spaces] = '\0';
3639 print_columns(capture_file *cf, const epan_dissect_t *edt)
3646 col_item_t* col_item;
3647 gchar str_format[11];
3648 const color_filter_t *color_filter = NULL;
3650 line_bufp = get_line_buf(256);
3655 color_filter = edt->pi.fd->color_filter;
3657 for (i = 0; i < cf->cinfo.num_cols; i++) {
3658 col_item = &cf->cinfo.columns[i];
3659 /* Skip columns not marked as visible. */
3660 if (!get_column_visible(i))
3662 switch (col_item->col_fmt) {
3664 column_len = col_len = strlen(col_item->col_data);
3667 line_bufp = get_line_buf(buf_offset + column_len);
3668 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3674 case COL_ABS_YMD_TIME: /* XXX - wider */
3675 case COL_ABS_YDOY_TIME: /* XXX - wider */
3677 case COL_UTC_YMD_TIME: /* XXX - wider */
3678 case COL_UTC_YDOY_TIME: /* XXX - wider */
3679 column_len = col_len = strlen(col_item->col_data);
3680 if (column_len < 10)
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_SRC:
3690 case COL_RES_DL_SRC:
3691 case COL_UNRES_DL_SRC:
3692 case COL_DEF_NET_SRC:
3693 case COL_RES_NET_SRC:
3694 case COL_UNRES_NET_SRC:
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_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3705 case COL_DEF_DL_DST:
3706 case COL_RES_DL_DST:
3707 case COL_UNRES_DL_DST:
3708 case COL_DEF_NET_DST:
3709 case COL_RES_NET_DST:
3710 case COL_UNRES_NET_DST:
3711 column_len = col_len = strlen(col_item->col_data);
3712 if (column_len < 12)
3714 line_bufp = get_line_buf(buf_offset + column_len);
3715 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3719 column_len = strlen(col_item->col_data);
3720 line_bufp = get_line_buf(buf_offset + column_len);
3721 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3724 buf_offset += column_len;
3725 if (i != cf->cinfo.num_cols - 1) {
3727 * This isn't the last column, so we need to print a
3728 * separator between this column and the next.
3730 * If we printed a network source and are printing a
3731 * network destination of the same type next, separate
3732 * them with a UTF-8 right arrow; if we printed a network
3733 * destination and are printing a network source of the same
3734 * type next, separate them with a UTF-8 left arrow;
3735 * otherwise separate them with a space.
3737 * We add enough space to the buffer for " \xe2\x86\x90 "
3738 * or " \xe2\x86\x92 ", even if we're only adding " ".
3740 line_bufp = get_line_buf(buf_offset + 5);
3741 switch (col_item->col_fmt) {
3746 switch (cf->cinfo.columns[i+1].col_fmt) {
3751 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_RIGHTWARDS_ARROW, delimiter_char);
3752 put_string(line_bufp + buf_offset, str_format, 5);
3757 put_string(line_bufp + buf_offset, delimiter_char, 1);
3763 case COL_DEF_DL_SRC:
3764 case COL_RES_DL_SRC:
3765 case COL_UNRES_DL_SRC:
3766 switch (cf->cinfo.columns[i+1].col_fmt) {
3768 case COL_DEF_DL_DST:
3769 case COL_RES_DL_DST:
3770 case COL_UNRES_DL_DST:
3771 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_RIGHTWARDS_ARROW, delimiter_char);
3772 put_string(line_bufp + buf_offset, str_format, 5);
3777 put_string(line_bufp + buf_offset, delimiter_char, 1);
3783 case COL_DEF_NET_SRC:
3784 case COL_RES_NET_SRC:
3785 case COL_UNRES_NET_SRC:
3786 switch (cf->cinfo.columns[i+1].col_fmt) {
3788 case COL_DEF_NET_DST:
3789 case COL_RES_NET_DST:
3790 case COL_UNRES_NET_DST:
3791 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_RIGHTWARDS_ARROW, delimiter_char);
3792 put_string(line_bufp + buf_offset, str_format, 5);
3797 put_string(line_bufp + buf_offset, delimiter_char, 1);
3806 switch (cf->cinfo.columns[i+1].col_fmt) {
3811 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_LEFTWARDS_ARROW, delimiter_char);
3812 put_string(line_bufp + buf_offset, str_format, 5);
3817 put_string(line_bufp + buf_offset, delimiter_char, 1);
3823 case COL_DEF_DL_DST:
3824 case COL_RES_DL_DST:
3825 case COL_UNRES_DL_DST:
3826 switch (cf->cinfo.columns[i+1].col_fmt) {
3828 case COL_DEF_DL_SRC:
3829 case COL_RES_DL_SRC:
3830 case COL_UNRES_DL_SRC:
3831 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_LEFTWARDS_ARROW, delimiter_char);
3832 put_string(line_bufp + buf_offset, str_format, 5);
3837 put_string(line_bufp + buf_offset, delimiter_char, 1);
3843 case COL_DEF_NET_DST:
3844 case COL_RES_NET_DST:
3845 case COL_UNRES_NET_DST:
3846 switch (cf->cinfo.columns[i+1].col_fmt) {
3848 case COL_DEF_NET_SRC:
3849 case COL_RES_NET_SRC:
3850 case COL_UNRES_NET_SRC:
3851 g_snprintf(str_format, sizeof(str_format), " %s%s", UTF8_LEFTWARDS_ARROW, delimiter_char);
3852 put_string(line_bufp + buf_offset, str_format, 5);
3857 put_string(line_bufp + buf_offset, delimiter_char, 1);
3864 put_string(line_bufp + buf_offset, delimiter_char, 1);
3871 if (dissect_color && color_filter != NULL)
3872 return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
3874 return print_line(print_stream, 0, line_bufp);
3878 print_packet(capture_file *cf, epan_dissect_t *edt)
3880 if (print_summary || output_fields_has_cols(output_fields)) {
3881 /* Just fill in the columns. */
3882 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3884 if (print_summary) {
3885 /* Now print them. */
3886 switch (output_action) {
3889 if (!print_columns(cf, edt))
3894 write_psml_columns(edt, stdout, dissect_color);
3895 return !ferror(stdout);
3896 case WRITE_FIELDS: /*No non-verbose "fields" format */
3899 case WRITE_JSON_RAW:
3900 g_assert_not_reached();
3905 if (print_details) {
3906 /* Print the information in the protocol tree. */
3907 switch (output_action) {
3910 if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
3911 print_hex, edt, output_only_tables, print_stream))
3914 if (!print_line(print_stream, 0, separator))
3920 write_pdml_proto_tree(output_fields, protocolfilter, protocolfilter_flags, edt, stdout, dissect_color);
3922 return !ferror(stdout);
3924 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
3926 return !ferror(stdout);
3928 write_json_proto_tree(output_fields, print_dissections_expanded,
3929 print_hex, protocolfilter, protocolfilter_flags,
3930 edt, node_children_grouper, stdout);
3931 return !ferror(stdout);
3932 case WRITE_JSON_RAW:
3933 write_json_proto_tree(output_fields, print_dissections_none, TRUE,
3934 protocolfilter, protocolfilter_flags,
3935 edt, node_children_grouper, stdout);
3936 return !ferror(stdout);
3938 write_ek_proto_tree(output_fields, print_hex, protocolfilter,
3939 protocolfilter_flags, edt, stdout);
3940 return !ferror(stdout);
3944 if (print_summary || print_details) {
3945 if (!print_line(print_stream, 0, ""))
3948 if (!print_hex_data(print_stream, edt))
3950 if (!print_line(print_stream, 0, separator))
3959 switch (output_action) {
3962 return print_finale(print_stream);
3966 write_pdml_finale(stdout);
3968 write_psml_finale(stdout);
3969 return !ferror(stdout);
3972 write_fields_finale(output_fields, stdout);
3973 return !ferror(stdout);
3976 case WRITE_JSON_RAW:
3977 write_json_finale(stdout);
3978 return !ferror(stdout);
3981 return !ferror(stdout);
3984 g_assert_not_reached();
3990 cf_close(capture_file *cf)
3992 g_free(cf->filename);
3996 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4001 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4005 /* The open succeeded. Fill in the information for this file. */
4007 /* Create new epan session for dissection. */
4008 epan_free(cf->epan);
4009 cf->epan = tshark_epan_new(cf);
4012 cf->f_datalen = 0; /* not used, but set it anyway */
4014 /* Set the file name because we need it to set the follow stream filter.
4015 XXX - is that still true? We need it for other reasons, though,
4017 cf->filename = g_strdup(fname);
4019 /* Indicate whether it's a permanent or temporary file. */
4020 cf->is_tempfile = is_tempfile;
4022 /* No user changes yet. */
4023 cf->unsaved_changes = FALSE;
4025 cf->cd_t = wtap_file_type_subtype(cf->wth);
4026 cf->open_type = type;
4028 cf->drops_known = FALSE;
4030 cf->snap = wtap_snapshot_length(cf->wth);
4031 nstime_set_zero(&cf->elapsed_time);
4036 cf->state = FILE_READ_IN_PROGRESS;
4038 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4039 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4044 cfile_open_failure_message("TShark", fname, *err, err_info);
4049 show_print_file_io_error(int err)
4054 cmdarg_err("Not all the packets could be printed because there is "
4055 "no space left on the file system.");
4060 cmdarg_err("Not all the packets could be printed because you are "
4061 "too close to, or over your disk quota.");
4066 cmdarg_err("An error occurred while printing packets: %s.",
4073 * General errors and warnings are reported with an console message
4077 failure_warning_message(const char *msg_format, va_list ap)
4079 fprintf(stderr, "tshark: ");
4080 vfprintf(stderr, msg_format, ap);
4081 fprintf(stderr, "\n");
4085 * Open/create errors are reported with an console message in TShark.
4088 open_failure_message(const char *filename, int err, gboolean for_writing)
4090 fprintf(stderr, "tshark: ");
4091 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4092 fprintf(stderr, "\n");
4096 * Read errors are reported with an console message in TShark.
4099 read_failure_message(const char *filename, int err)
4101 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4102 filename, g_strerror(err));
4106 * Write errors are reported with an console message in TShark.
4109 write_failure_message(const char *filename, int err)
4111 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4112 filename, g_strerror(err));
4115 static void reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
4117 if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
4120 fprintf(stderr, "resetting session.\n");
4122 epan_dissect_cleanup(edt);
4123 epan_free(cf->epan);
4125 cf->epan = tshark_epan_new(cf);
4126 epan_dissect_init(edt, cf->epan, tree, visual);
4131 * Report additional information for an error in command-line arguments.
4134 failure_message_cont(const char *msg_format, va_list ap)
4136 vfprintf(stderr, msg_format, ap);
4137 fprintf(stderr, "\n");
4141 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4146 * indent-tabs-mode: nil
4149 * vi: set shiftwidth=2 tabstop=8 expandtab:
4150 * :indentSize=2:tabSize=8:noTabs=true: