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.
51 #ifdef HAVE_SYS_STAT_H
52 # include <sys/stat.h>
56 #include <zlib.h> /* to get the libz version number */
60 # include <sys/capability.h>
63 #ifndef HAVE_GETOPT_LONG
64 #include "wsutil/wsgetopt.h"
69 #include <epan/exceptions.h>
70 #include <epan/epan-int.h>
71 #include <epan/epan.h>
73 #include <wsutil/clopts_common.h>
74 #include <wsutil/cmdarg_err.h>
75 #include <wsutil/crash_info.h>
76 #include <wsutil/filesystem.h>
77 #include <wsutil/file_util.h>
78 #include <wsutil/privileges.h>
79 #include <wsutil/report_err.h>
80 #include <wsutil/ws_diag_control.h>
81 #include <wsutil/ws_version_info.h>
84 #include <epan/timestamp.h>
85 #include <epan/packet.h>
87 #include <epan/wslua/init_wslua.h>
90 #include "frame_tvbuff.h"
91 #include <epan/disabled_protos.h>
92 #include <epan/prefs.h>
93 #include <epan/column.h>
94 #include <epan/print.h>
95 #include <epan/addr_resolv.h>
97 #include "ui/capture_ui_utils.h"
100 #include "ui/ui_util.h"
101 #include "ui/cli/tshark-tap.h"
102 #include "register.h"
103 #include <epan/epan_dissect.h>
104 #include <epan/tap.h>
105 #include <epan/stat_tap_ui.h>
106 #include <epan/conversation_table.h>
107 #include <epan/srt_table.h>
108 #include <epan/rtd_table.h>
109 #include <epan/ex-opt.h>
111 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
112 #include <epan/asn1.h>
113 #include <epan/dissectors/packet-kerberos.h>
116 #include "capture_opts.h"
118 #include "caputils/capture-pcap-util.h"
121 #include "caputils/capture_ifinfo.h"
123 #include "caputils/capture-wpcap.h"
124 #include <wsutil/os_version_info.h>
125 #include <wsutil/unicode-utils.h>
127 #include <capchild/capture_session.h>
128 #include <capchild/capture_sync.h>
129 #endif /* HAVE_LIBPCAP */
131 #include <epan/funnel.h>
134 #include <wsutil/plugins.h>
139 #define tshark_debug0(str) g_warning(str)
140 #define tshark_debug1(str,p1) g_warning(str,p1)
141 #define tshark_debug2(str,p1,p2) g_warning(str,p1,p2)
142 #define tshark_debug3(str,p1,p2,p3) g_warning(str,p1,p2,p3)
144 #define tshark_debug0(str)
145 #define tshark_debug1(str,p1)
146 #define tshark_debug2(str,p1,p2)
147 #define tshark_debug3(str,p1,p2,p3)
152 * This is the template for the decode as option; it is shared between the
153 * various functions that output the usage for this parameter.
155 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
157 static guint32 cum_bytes;
158 static const frame_data *ref;
159 static frame_data ref_frame;
160 static frame_data *prev_dis;
161 static frame_data prev_dis_frame;
162 static frame_data *prev_cap;
163 static frame_data prev_cap_frame;
165 static const char* prev_display_dissector_name = NULL;
167 static gboolean perform_two_pass_analysis;
170 * The way the packet decode is to be written.
173 WRITE_TEXT, /* summary or detail text */
174 WRITE_XML, /* PDML or PSML */
175 WRITE_FIELDS /* User defined list of fields */
176 /* Add CSV and the like here */
179 static output_action_e output_action;
180 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
181 static gboolean print_packet_info; /* TRUE if we're to print packet information */
182 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
183 static gboolean print_details; /* TRUE if we're to print packet details information */
184 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
185 static gboolean line_buffered;
186 static gboolean really_quiet = FALSE;
188 static print_format_e print_format = PR_FMT_TEXT;
189 static print_stream_t *print_stream;
191 static output_fields_t* output_fields = NULL;
193 /* The line separator used between packets, changeable via the -S option */
194 static const char *separator = "";
198 * TRUE if we're to print packet counts to keep track of captured packets.
200 static gboolean print_packet_counts;
202 static capture_options global_capture_opts;
203 static capture_session global_capture_session;
206 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
207 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
210 static gboolean capture(void);
211 static void report_counts(void);
213 static BOOL WINAPI capture_cleanup(DWORD);
215 static void capture_cleanup(int);
217 static void report_counts_siginfo(int);
221 #else /* HAVE_LIBPCAP */
223 static char *output_file_name;
225 #endif /* HAVE_LIBPCAP */
227 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
228 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
229 struct wtap_pkthdr *whdr, const guchar *pd,
231 static void show_capture_file_io_error(const char *, int, gboolean);
232 static void show_print_file_io_error(int err);
233 static gboolean write_preamble(capture_file *cf);
234 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
235 static gboolean write_finale(void);
236 static const char *cf_open_error_message(int err, gchar *err_info,
237 gboolean for_writing, int file_type);
239 static void open_failure_message(const char *filename, int err,
240 gboolean for_writing);
241 static void failure_message(const char *msg_format, va_list ap);
242 static void read_failure_message(const char *filename, int err);
243 static void write_failure_message(const char *filename, int err);
244 static void failure_message_cont(const char *msg_format, va_list ap);
248 static GHashTable *output_only_tables = NULL;
251 const char *sstr; /* The short string */
252 const char *lstr; /* The long string */
256 string_compare(gconstpointer a, gconstpointer b)
258 return strcmp(((const struct string_elem *)a)->sstr,
259 ((const struct string_elem *)b)->sstr);
263 string_elem_print(gpointer data, gpointer not_used _U_)
265 fprintf(stderr, " %s - %s\n",
266 ((struct string_elem *)data)->sstr,
267 ((struct string_elem *)data)->lstr);
271 list_capture_types(void) {
273 struct string_elem *captypes;
276 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
278 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
279 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
280 if (wtap_dump_can_open(i)) {
281 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
282 captypes[i].lstr = wtap_file_type_subtype_string(i);
283 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
286 g_slist_foreach(list, string_elem_print, NULL);
292 list_read_capture_types(void) {
294 struct string_elem *captypes;
296 const char *magic = "Magic-value-based";
297 const char *heuristic = "Heuristics-based";
299 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
300 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
302 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
303 for (i = 0; open_routines[i].name != NULL; i++) {
304 captypes[i].sstr = open_routines[i].name;
305 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
306 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
308 g_slist_foreach(list, string_elem_print, NULL);
314 print_usage(FILE *output)
316 fprintf(output, "\n");
317 fprintf(output, "Usage: tshark [options] ...\n");
318 fprintf(output, "\n");
321 fprintf(output, "Capture interface:\n");
322 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
323 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
324 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
325 fprintf(output, " -p don't capture in promiscuous mode\n");
326 #ifdef HAVE_PCAP_CREATE
327 fprintf(output, " -I capture in monitor mode, if available\n");
329 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
330 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
332 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
333 fprintf(output, " -D print list of interfaces and exit\n");
334 fprintf(output, " -L print list of link-layer types of iface and exit\n");
335 fprintf(output, "\n");
336 fprintf(output, "Capture stop conditions:\n");
337 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
338 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
339 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
340 fprintf(output, " files:NUM - stop after NUM files\n");
341 /*fprintf(output, "\n");*/
342 fprintf(output, "Capture output:\n");
343 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
344 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
345 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
346 #endif /* HAVE_LIBPCAP */
347 #ifdef HAVE_PCAP_REMOTE
348 fprintf(output, "RPCAP options:\n");
349 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
351 /*fprintf(output, "\n");*/
352 fprintf(output, "Input file:\n");
353 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
355 fprintf(output, "\n");
356 fprintf(output, "Processing:\n");
357 fprintf(output, " -2 perform a two-pass analysis\n");
358 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
359 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
360 fprintf(output, " syntax\n");
361 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
362 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\n");
363 fprintf(output, " -d %s ...\n", decode_as_arg_template);
364 fprintf(output, " \"Decode As\", see the man page for details\n");
365 fprintf(output, " Example: tcp.port==8888,http\n");
366 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
367 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
368 fprintf(output, " --disable-protocol <proto_name>\n");
369 fprintf(output, " disable dissection of proto_name\n");
370 fprintf(output, " --enable-heuristic <short_name>\n");
371 fprintf(output, " enable dissection of heuristic protocol\n");
372 fprintf(output, " --disable-heuristic <short_name>\n");
373 fprintf(output, " disable dissection of heuristic protocol\n");
375 /*fprintf(output, "\n");*/
376 fprintf(output, "Output:\n");
377 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
378 fprintf(output, " (or to the standard output for \"-\")\n");
379 fprintf(output, " -C <config profile> start with specified configuration profile\n");
380 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
381 fprintf(output, " an empty \"-F\" option will list the file types\n");
382 fprintf(output, " -V add output of packet tree (Packet Details)\n");
383 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
384 fprintf(output, " separated\n");
385 fprintf(output, " -P print packet summary even when writing to a file\n");
386 fprintf(output, " -S <separator> the line separator to print between packets\n");
387 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
388 fprintf(output, " -T pdml|ps|psml|text|fields\n");
389 fprintf(output, " format of text output (def: text)\n");
390 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
391 fprintf(output, " _ws.col.Info)\n");
392 fprintf(output, " this option can be repeated to print multiple fields\n");
393 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
394 fprintf(output, " header=y|n switch headers on and off\n");
395 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
396 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
397 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
398 fprintf(output, " aggregator\n");
399 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
400 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
401 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
402 fprintf(output, " -l flush standard output after each packet\n");
403 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
404 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
405 fprintf(output, " -g enable group read access on the output file(s)\n");
406 fprintf(output, " -W n Save extra information in the file, if supported.\n");
407 fprintf(output, " n = write network address resolution information\n");
408 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
409 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
410 fprintf(output, " --capture-comment <comment>\n");
411 fprintf(output, " add a capture comment to the newly created\n");
412 fprintf(output, " output file (only for pcapng)\n");
414 fprintf(output, "\n");
415 fprintf(output, "Miscellaneous:\n");
416 fprintf(output, " -h display this help and exit\n");
417 fprintf(output, " -v display version info and exit\n");
418 fprintf(output, " -o <name>:<value> ... override preference setting\n");
419 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
420 fprintf(output, " -G [report] dump one of several available reports and exit\n");
421 fprintf(output, " default report=\"fields\"\n");
422 fprintf(output, " use \"-G ?\" for more help\n");
424 fprintf(output, "\n");
425 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
426 fprintf(output, "You might want to reset it\n");
427 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
428 fprintf(output, "\n");
434 glossary_option_help(void)
440 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
442 fprintf(output, "\n");
443 fprintf(output, "Usage: tshark -G [report]\n");
444 fprintf(output, "\n");
445 fprintf(output, "Glossary table reports:\n");
446 fprintf(output, " -G column-formats dump column format codes and exit\n");
447 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
448 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
449 fprintf(output, " -G fieldcount dump count of header fields and exit\n");
450 fprintf(output, " -G fields dump fields glossary and exit\n");
451 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
452 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
453 fprintf(output, " -G plugins dump installed plugins and exit\n");
454 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
455 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
456 fprintf(output, "\n");
457 fprintf(output, "Preference reports:\n");
458 fprintf(output, " -G currentprefs dump current preferences and exit\n");
459 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
460 fprintf(output, "\n");
464 * For a dissector table, print on the stream described by output,
465 * its short name (which is what's used in the "-d" option) and its
469 display_dissector_table_names(const char *table_name, const char *ui_name,
472 if ((prev_display_dissector_name == NULL) ||
473 (strcmp(prev_display_dissector_name, table_name) != 0)) {
474 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
475 prev_display_dissector_name = table_name;
480 * For a dissector handle, print on the stream described by output,
481 * the filter name (which is what's used in the "-d" option) and the full
482 * name for the protocol that corresponds to this handle.
485 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
488 const gchar *proto_filter_name;
489 const gchar *proto_ui_name;
491 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
493 if (proto_id != -1) {
494 proto_filter_name = proto_get_protocol_filter_name(proto_id);
495 proto_ui_name = proto_get_protocol_name(proto_id);
496 g_assert(proto_filter_name != NULL);
497 g_assert(proto_ui_name != NULL);
499 if ((prev_display_dissector_name == NULL) ||
500 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
501 fprintf((FILE *)output, "\t%s (%s)\n",
504 prev_display_dissector_name = proto_filter_name;
510 * The protocol_name_search structure is used by find_protocol_name_func()
511 * to pass parameters and store results
513 struct protocol_name_search{
514 gchar *searched_name; /* Protocol filter name we are looking for */
515 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
516 guint nb_match; /* How many dissectors matched searched_name */
518 typedef struct protocol_name_search *protocol_name_search_t;
521 * This function parses all dissectors associated with a table to find the
522 * one whose protocol has the specified filter name. It is called
523 * as a reference function in a call to dissector_table_foreach_handle.
524 * The name we are looking for, as well as the results, are stored in the
525 * protocol_name_search struct pointed to by user_data.
526 * If called using dissector_table_foreach_handle, we actually parse the
527 * whole list of dissectors.
530 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
534 const gchar *protocol_filter_name;
535 protocol_name_search_t search_info;
539 search_info = (protocol_name_search_t)user_data;
541 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
542 if (proto_id != -1) {
543 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
544 g_assert(protocol_filter_name != NULL);
545 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
547 if (search_info->nb_match == 0) {
548 /* Record this handle only if this is the first match */
549 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
551 search_info->nb_match++;
557 * Allow dissector key names to be sorted alphabetically
561 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
563 return strcmp((const char*)dissector_a, (const char*)dissector_b);
567 * Print all layer type names supported.
568 * We send the output to the stream described by the handle output.
572 fprint_all_layer_types(FILE *output)
575 prev_display_dissector_name = NULL;
576 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
580 * Print all protocol names supported for a specific layer type.
581 * table_name contains the layer type name in which the search is performed.
582 * We send the output to the stream described by the handle output.
586 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
589 prev_display_dissector_name = NULL;
590 dissector_table_foreach_handle(table_name,
591 display_dissector_names,
596 * The function below parses the command-line parameters for the decode as
597 * feature (a string pointer by cl_param).
598 * It checks the format of the command-line, searches for a matching table
599 * and dissector. If a table/dissector match is not found, we display a
600 * summary of the available tables/dissectors (on stderr) and return FALSE.
601 * If everything is fine, we get the "Decode as" preference activated,
602 * then we return TRUE.
605 add_decode_as(const gchar *cl_param)
608 guint32 selector, selector2;
609 gchar *decoded_param;
610 gchar *remaining_param;
612 gchar *dissector_str;
613 dissector_handle_t dissector_matching;
614 dissector_table_t table_matching;
615 ftenum_t dissector_table_selector_type;
616 struct protocol_name_search user_protocol_name;
620 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
623 decoded_param = g_strdup(cl_param);
624 g_assert(decoded_param);
627 /* The lines below will parse this string (modifying it) to extract all
628 necessary information. Note that decoded_param is still needed since
629 strings are not copied - we just save pointers. */
631 /* This section extracts a layer type (table_name) from decoded_param */
632 table_name = decoded_param; /* Layer type string starts from beginning */
634 remaining_param = strchr(table_name, '=');
635 if (remaining_param == NULL) {
636 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
637 /* If the argument does not follow the template, carry on anyway to check
638 if the table name is at least correct. If remaining_param is NULL,
639 we'll exit anyway further down */
642 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
645 /* Remove leading and trailing spaces from the table name */
646 while ( table_name[0] == ' ' )
648 while ( table_name[strlen(table_name) - 1] == ' ' )
649 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
651 /* The following part searches a table matching with the layer type specified */
652 table_matching = NULL;
654 /* Look for the requested table */
655 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
656 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
659 table_matching = find_dissector_table(table_name);
660 if (!table_matching) {
661 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
665 if (!table_matching) {
666 /* Display a list of supported layer types to help the user, if the
667 specified layer type was not found */
668 cmdarg_err("Valid layer types are:");
669 fprint_all_layer_types(stderr);
671 if (remaining_param == NULL || !table_matching) {
672 /* Exit if the layer type was not found, or if no '=' separator was found
674 g_free(decoded_param);
678 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
679 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
682 remaining_param++; /* Move to the second '=' */
683 *remaining_param = '\0'; /* Remove the second '=' */
685 remaining_param++; /* Position after the layer type string */
687 /* This section extracts a selector value (selector_str) from decoded_param */
689 selector_str = remaining_param; /* Next part starts with the selector number */
691 remaining_param = strchr(selector_str, ',');
692 if (remaining_param == NULL) {
693 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
694 /* If the argument does not follow the template, carry on anyway to check
695 if the selector value is at least correct. If remaining_param is NULL,
696 we'll exit anyway further down */
699 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
702 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
704 switch (dissector_table_selector_type) {
710 /* The selector for this table is an unsigned number. Parse it as such.
711 There's no need to remove leading and trailing spaces from the
712 selector number string, because sscanf will do that for us. */
713 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
718 if (op != ':' && op != '-') {
719 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
720 g_free(decoded_param);
724 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
725 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
726 g_free(decoded_param);
730 else if (selector2 < selector) {
731 /* We could swap them for the user, but maybe it's better to call
732 * this out as an error in case it's not what was intended? */
733 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
734 g_free(decoded_param);
739 cmdarg_err("Invalid selector number \"%s\"", selector_str);
740 g_free(decoded_param);
749 /* The selector for this table is a string. */
753 /* There are currently no dissector tables with any types other
754 than the ones listed above. */
755 g_assert_not_reached();
758 if (remaining_param == NULL) {
759 /* Exit if no ',' separator was found (see above) */
760 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
761 fprint_all_protocols_for_layer_types(stderr, table_name);
762 g_free(decoded_param);
766 remaining_param++; /* Position after the selector number string */
768 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
770 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
772 /* Remove leading and trailing spaces from the dissector name */
773 while ( dissector_str[0] == ' ' )
775 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
776 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
778 dissector_matching = NULL;
780 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
781 if ( ! (*dissector_str) ) { /* Is the dissector name empty, if so, don't even search for a matching dissector and display all dissectors found for the selected table */
782 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
785 user_protocol_name.nb_match = 0;
786 user_protocol_name.searched_name = dissector_str;
787 user_protocol_name.matched_handle = NULL;
789 dissector_table_foreach_handle(table_name, find_protocol_name_func, &user_protocol_name); /* Go and perform the search for this dissector in the this table's dissectors' names and shortnames */
791 if (user_protocol_name.nb_match != 0) {
792 dissector_matching = user_protocol_name.matched_handle;
793 if (user_protocol_name.nb_match > 1) {
794 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
798 /* OK, check whether the problem is that there isn't any such
799 protocol, or that there is but it's not specified as a protocol
800 that's valid for that dissector table.
801 Note, we don't exit here, but dissector_matching will remain NULL,
803 if (proto_get_id_by_filter_name(dissector_str) == -1) {
804 /* No such protocol */
805 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
807 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
808 dissector_str, table_name);
813 if (!dissector_matching) {
814 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
815 fprint_all_protocols_for_layer_types(stderr, table_name);
816 g_free(decoded_param);
820 /* This is the end of the code that parses the command-line options.
821 All information is now stored in the variables:
825 The above variables that are strings are still pointing to areas within
826 decoded_parm. decoded_parm thus still needs to be kept allocated in
827 until we stop needing these variables
828 decoded_param will be deallocated at each exit point of this function */
831 /* We now have a pointer to the handle for the requested dissector
832 (requested protocol) inside the variable dissector_matching */
833 switch (dissector_table_selector_type) {
839 /* The selector for this table is an unsigned number. */
841 dissector_change_uint(table_name, selector, dissector_matching);
842 } else if (op == ':') {
843 for (i = selector; i < (guint64)selector + selector2; i++) {
844 dissector_change_uint(table_name, (guint32)i, dissector_matching);
846 } else { /* op == '-' */
847 for (i = selector; i <= selector2; i++) {
848 dissector_change_uint(table_name, (guint32)i, dissector_matching);
857 /* The selector for this table is a string. */
858 dissector_change_string(table_name, selector_str, dissector_matching);
862 /* There are currently no dissector tables with any types other
863 than the ones listed above. */
864 g_assert_not_reached();
866 g_free(decoded_param); /* "Decode As" rule has been successfully added */
871 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
872 const gchar *message, gpointer user_data)
874 /* ignore log message, if log_level isn't interesting based
875 upon the console log preferences.
876 If the preferences haven't been loaded loaded yet, display the
879 The default console_log_level preference value is such that only
880 ERROR, CRITICAL and WARNING level messages are processed;
881 MESSAGE, INFO and DEBUG level messages are ignored.
883 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
884 ERROR and CRITICAL level messages so the current code is a behavioral
885 change. The current behavior is the same as in Wireshark.
887 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
888 prefs.console_log_level != 0) {
892 g_log_default_handler(log_domain, log_level, message, user_data);
897 output_file_description(const char *fname)
899 char *save_file_string;
901 /* Get a string that describes what we're writing to */
902 if (strcmp(fname, "-") == 0) {
903 /* We're writing to the standard output */
904 save_file_string = g_strdup("standard output");
906 /* We're writing to a file with the name in save_file */
907 save_file_string = g_strdup_printf("file \"%s\"", fname);
909 return save_file_string;
913 print_current_user(void) {
914 gchar *cur_user, *cur_group;
916 if (started_with_special_privs()) {
917 cur_user = get_cur_username();
918 cur_group = get_cur_groupname();
919 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
920 cur_user, cur_group);
923 if (running_with_special_privs()) {
924 fprintf(stderr, " This could be dangerous.");
926 fprintf(stderr, "\n");
931 get_tshark_compiled_version_info(GString *str)
933 /* Capture libraries */
934 get_compiled_caplibs_version(str);
937 g_string_append(str, ", ");
939 g_string_append(str, "with libz ");
941 g_string_append(str, ZLIB_VERSION);
942 #else /* ZLIB_VERSION */
943 g_string_append(str, "(version unknown)");
944 #endif /* ZLIB_VERSION */
945 #else /* HAVE_LIBZ */
946 g_string_append(str, "without libz");
947 #endif /* HAVE_LIBZ */
951 get_tshark_runtime_version_info(GString *str)
954 /* Capture libraries */
955 g_string_append(str, ", ");
956 get_runtime_caplibs_version(str);
960 #if defined(HAVE_LIBZ) && !defined(_WIN32)
961 g_string_append_printf(str, ", with libz %s", zlibVersion());
964 /* stuff used by libwireshark */
965 epan_get_runtime_version_info(str);
969 main(int argc, char *argv[])
971 GString *comp_info_str;
972 GString *runtime_info_str;
973 char *init_progfile_dir_error;
976 static const struct option long_options[] = {
977 {(char *)"help", no_argument, NULL, 'h'},
978 {(char *)"version", no_argument, NULL, 'v'},
979 LONGOPT_CAPTURE_COMMON
983 gboolean arg_error = FALSE;
989 char *gpf_path, *pf_path;
990 char *gdp_path, *dp_path;
991 int gpf_open_errno, gpf_read_errno;
992 int pf_open_errno, pf_read_errno;
993 int gdp_open_errno, gdp_read_errno;
994 int dp_open_errno, dp_read_errno;
996 volatile int exit_status = 0;
998 gboolean list_link_layer_types = FALSE;
999 gboolean start_capture = FALSE;
1004 gboolean capture_option_specified = FALSE;
1006 gboolean quiet = FALSE;
1007 #ifdef PCAP_NG_DEFAULT
1008 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
1010 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
1012 volatile gboolean out_file_name_res = FALSE;
1013 volatile int in_file_type = WTAP_TYPE_AUTO;
1014 gchar *volatile cf_name = NULL;
1015 gchar *rfilter = NULL;
1016 gchar *dfilter = NULL;
1017 #ifdef HAVE_PCAP_OPEN_DEAD
1018 struct bpf_program fcode;
1020 dfilter_t *rfcode = NULL;
1021 dfilter_t *dfcode = NULL;
1026 gchar *output_only = NULL;
1027 GSList *disable_protocol_slist = NULL;
1028 GSList *enable_heur_slist = NULL;
1029 GSList *disable_heur_slist = NULL;
1032 * The leading + ensures that getopt_long() does not permute the argv[]
1035 * We have to make sure that the first getopt_long() preserves the content
1036 * of argv[] for the subsequent getopt_long() call.
1038 * We use getopt_long() in both cases to ensure that we're using a routine
1039 * whose permutation behavior we can control in the same fashion on all
1040 * platforms, and so that, if we ever need to process a long argument before
1041 * doing further initialization, we can do so.
1043 * Glibc and Solaris libc document that a leading + disables permutation
1044 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
1045 * and OS X don't document it, but do so anyway.
1047 * We do *not* use a leading - because the behavior of a leading - is
1048 * platform-dependent.
1050 #define OPTSTRING "+2" OPTSTRING_CAPTURE_COMMON "C:d:e:E:F:gG:hH:" "K:lnN:o:O:PqQr:R:S:t:T:u:vVw:W:xX:Y:z:"
1052 static const char optstring[] = OPTSTRING;
1054 tshark_debug1("tshark started with %d args", argc);
1056 /* Set the C-language locale to the native environment. */
1057 setlocale(LC_ALL, "");
1059 cmdarg_err_init(failure_message, failure_message_cont);
1062 arg_list_utf_16to8(argc, argv);
1063 create_app_running_mutex();
1064 #if !GLIB_CHECK_VERSION(2,31,0)
1065 g_thread_init(NULL);
1070 * Get credential information for later use, and drop privileges
1071 * before doing anything else.
1072 * Let the user know if anything happened.
1074 init_process_policies();
1075 relinquish_special_privs_perm();
1076 print_current_user();
1079 * Attempt to get the pathname of the executable file.
1081 init_progfile_dir_error = init_progfile_dir(argv[0], (void *)main);
1082 if (init_progfile_dir_error != NULL) {
1083 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1084 init_progfile_dir_error);
1087 initialize_funnel_ops();
1090 /* Load wpcap if possible. Do this before collecting the run-time version information */
1093 /* Warn the user if npf.sys isn't loaded. */
1094 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
1095 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
1096 "capturing or\nlisting interfaces.\n");
1100 /* Get the compile-time version information string */
1101 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1102 epan_get_compiled_version_info);
1104 /* Get the run-time version information string */
1105 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1107 /* Add it to the information to be reported on a crash. */
1108 ws_add_crash_info("TShark (Wireshark) %s\n"
1113 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
1114 g_string_free(comp_info_str, TRUE);
1115 g_string_free(runtime_info_str, TRUE);
1118 * In order to have the -X opts assigned before the wslua machine starts
1119 * we need to call getopt_long before epan_init() gets called.
1121 * In order to handle, for example, -o options, we also need to call it
1122 * *after* epan_init() gets called, so that the dissectors have had a
1123 * chance to register their preferences.
1125 * XXX - can we do this all with one getopt_long() call, saving the
1126 * arguments we can't handle until after initializing libwireshark,
1127 * and then process them after initializing libwireshark?
1131 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1133 case 'C': /* Configuration Profile */
1134 if (profile_exists (optarg, FALSE)) {
1135 set_profile_name (optarg);
1137 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1141 case 'P': /* Print packet summary info even when writing to a file */
1142 print_packet_info = TRUE;
1143 print_summary = TRUE;
1145 case 'O': /* Only output these protocols */
1146 output_only = g_strdup(optarg);
1148 case 'V': /* Verbose */
1149 print_details = TRUE;
1150 print_packet_info = TRUE;
1152 case 'x': /* Print packet data in hex (and ASCII) */
1154 /* The user asked for hex output, so let's ensure they get it,
1155 * even if they're writing to a file.
1157 print_packet_info = TRUE;
1168 * Print packet summary information is the default, unless either -V or -x
1169 * were specified and -P was not. Note that this is new behavior, which
1170 * allows for the possibility of printing only hex/ascii output without
1171 * necessarily requiring that either the summary or details be printed too.
1173 if (print_summary == -1)
1174 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1176 /** Send All g_log messages to our own handler **/
1180 G_LOG_LEVEL_CRITICAL|
1181 G_LOG_LEVEL_WARNING|
1182 G_LOG_LEVEL_MESSAGE|
1185 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1187 g_log_set_handler(NULL,
1188 (GLogLevelFlags)log_flags,
1189 tshark_log_handler, NULL /* user_data */);
1190 g_log_set_handler(LOG_DOMAIN_MAIN,
1191 (GLogLevelFlags)log_flags,
1192 tshark_log_handler, NULL /* user_data */);
1195 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1196 (GLogLevelFlags)log_flags,
1197 tshark_log_handler, NULL /* user_data */);
1198 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1199 (GLogLevelFlags)log_flags,
1200 tshark_log_handler, NULL /* user_data */);
1203 init_report_err(failure_message, open_failure_message, read_failure_message,
1204 write_failure_message);
1207 capture_opts_init(&global_capture_opts);
1208 capture_session_init(&global_capture_session, &cfile);
1211 timestamp_set_type(TS_RELATIVE);
1212 timestamp_set_precision(TS_PREC_AUTO);
1213 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1215 init_open_routines();
1218 /* Register all the plugin types we have. */
1219 epan_register_plugin_types(); /* Types known to libwireshark */
1220 wtap_register_plugin_types(); /* Types known to libwiretap */
1222 /* Scan for plugins. This does *not* call their registration routines;
1223 that's done later. */
1226 /* Register all libwiretap plugin modules. */
1227 register_all_wiretap_modules();
1230 /* Register all dissectors; we must do this before checking for the
1231 "-G" flag, as the "-G" flag dumps information registered by the
1232 dissectors, and we must do it before we read the preferences, in
1233 case any dissectors register preferences. */
1234 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1236 /* Register all tap listeners; we do this before we parse the arguments,
1237 as the "-z" argument can specify a registered tap. */
1239 /* we register the plugin taps before the other taps because
1240 stats_tree taps plugins will be registered as tap listeners
1241 by stats_tree_stat.c and need to registered before that */
1243 register_all_plugin_tap_listeners();
1245 register_all_tap_listeners();
1246 conversation_table_set_gui_info(init_iousers);
1247 hostlist_table_set_gui_info(init_hostlists);
1248 srt_table_iterate_tables(register_srt_tables, NULL);
1249 rtd_table_iterate_tables(register_rtd_tables, NULL);
1250 new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
1252 /* If invoked with the "-G" flag, we dump out information based on
1253 the argument to the "-G" flag; if no argument is specified,
1254 for backwards compatibility we dump out a glossary of display
1257 XXX - we do this here, for now, to support "-G" with no arguments.
1258 If none of our build or other processes uses "-G" with no arguments,
1259 we can just process it with the other arguments. */
1260 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1261 proto_initialize_all_prefixes();
1264 proto_registrar_dump_fields();
1266 if (strcmp(argv[2], "column-formats") == 0)
1267 column_dump_column_formats();
1268 else if (strcmp(argv[2], "currentprefs") == 0) {
1269 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1270 &pf_open_errno, &pf_read_errno, &pf_path);
1273 else if (strcmp(argv[2], "decodes") == 0)
1274 dissector_dump_decodes();
1275 else if (strcmp(argv[2], "defaultprefs") == 0)
1277 else if (strcmp(argv[2], "dissector-tables") == 0)
1278 dissector_dump_dissector_tables();
1279 else if (strcmp(argv[2], "fieldcount") == 0) {
1280 /* return value for the test suite */
1281 return proto_registrar_dump_fieldcount();
1282 } else if (strcmp(argv[2], "fields") == 0)
1283 proto_registrar_dump_fields();
1284 else if (strcmp(argv[2], "ftypes") == 0)
1285 proto_registrar_dump_ftypes();
1286 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1287 dissector_dump_heur_decodes();
1288 else if (strcmp(argv[2], "plugins") == 0) {
1293 wslua_plugins_dump_all();
1296 else if (strcmp(argv[2], "protocols") == 0)
1297 proto_registrar_dump_protocols();
1298 else if (strcmp(argv[2], "values") == 0)
1299 proto_registrar_dump_values();
1300 else if (strcmp(argv[2], "?") == 0)
1301 glossary_option_help();
1302 else if (strcmp(argv[2], "-?") == 0)
1303 glossary_option_help();
1305 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1312 tshark_debug0("tshark reading preferences");
1314 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1315 &pf_open_errno, &pf_read_errno, &pf_path);
1316 if (gpf_path != NULL) {
1317 if (gpf_open_errno != 0) {
1318 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1319 pf_path, g_strerror(gpf_open_errno));
1321 if (gpf_read_errno != 0) {
1322 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1323 pf_path, g_strerror(gpf_read_errno));
1326 if (pf_path != NULL) {
1327 if (pf_open_errno != 0) {
1328 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1329 g_strerror(pf_open_errno));
1331 if (pf_read_errno != 0) {
1332 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1333 pf_path, g_strerror(pf_read_errno));
1339 /* Read the disabled protocols file. */
1340 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1341 &dp_path, &dp_open_errno, &dp_read_errno);
1342 read_disabled_heur_dissector_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1343 &dp_path, &dp_open_errno, &dp_read_errno);
1344 if (gdp_path != NULL) {
1345 if (gdp_open_errno != 0) {
1346 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1347 gdp_path, g_strerror(gdp_open_errno));
1349 if (gdp_read_errno != 0) {
1350 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1351 gdp_path, g_strerror(gdp_read_errno));
1355 if (dp_path != NULL) {
1356 if (dp_open_errno != 0) {
1358 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1359 g_strerror(dp_open_errno));
1361 if (dp_read_errno != 0) {
1363 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1364 g_strerror(dp_read_errno));
1369 cap_file_init(&cfile);
1371 /* Print format defaults to this. */
1372 print_format = PR_FMT_TEXT;
1374 output_fields = output_fields_new();
1377 * To reset the options parser, set optreset to 1 on platforms that
1378 * have optreset (documented in *BSD and OS X, apparently present but
1379 * not documented in Solaris - the Illumos repository seems to
1380 * suggest that the first Solaris getopt_long(), at least as of 2004,
1381 * was based on the NetBSD one, it had optreset) and set optind to 1,
1382 * and set optind to 0 otherwise (documented as working in the GNU
1383 * getopt_long(). Setting optind to 0 didn't originally work in the
1384 * NetBSD one, but that was added later - we don't want to depend on
1385 * it if we have optreset).
1387 * Also reset opterr to 1, so that error messages are printed by
1390 #ifdef HAVE_OPTRESET
1398 /* Now get our args */
1399 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1401 case '2': /* Perform two pass analysis */
1402 perform_two_pass_analysis = TRUE;
1404 case 'a': /* autostop criteria */
1405 case 'b': /* Ringbuffer option */
1406 case 'c': /* Capture x packets */
1407 case 'f': /* capture filter */
1408 case 'g': /* enable group read access on file(s) */
1409 case 'i': /* Use interface x */
1410 case 'p': /* Don't capture in promiscuous mode */
1411 #ifdef HAVE_PCAP_REMOTE
1412 case 'A': /* Authentication */
1414 #ifdef HAVE_PCAP_CREATE
1415 case 'I': /* Capture in monitor mode, if available */
1417 case 's': /* Set the snapshot (capture) length */
1418 case 'w': /* Write to capture file x */
1419 case 'y': /* Set the pcap data link type */
1420 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1421 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1422 case 'B': /* Buffer size */
1425 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1432 * Output file name, if we're reading a file and writing to another
1435 output_file_name = optarg;
1437 capture_option_specified = TRUE;
1443 /* already processed; just ignore it now */
1445 case 'd': /* Decode as rule */
1446 if (!add_decode_as(optarg))
1449 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1450 case 'K': /* Kerberos keytab file */
1451 read_keytab_file(optarg);
1454 case 'D': /* Print a list of capture devices and exit */
1456 if_list = capture_interface_list(&err, &err_str,NULL);
1457 if (if_list == NULL) {
1459 cmdarg_err("There are no interfaces on which a capture can be done");
1461 cmdarg_err("%s", err_str);
1466 capture_opts_print_interfaces(if_list);
1467 free_interface_list(if_list);
1470 capture_option_specified = TRUE;
1476 output_fields_add(output_fields, optarg);
1480 if (!output_fields_set_option(output_fields, optarg)) {
1481 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1482 output_fields_list_options(stderr);
1487 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1488 if (out_file_type < 0) {
1489 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1490 list_capture_types();
1494 case 'W': /* Select extra information to save in our capture file */
1495 /* This is patterned after the -N flag which may not be the best idea. */
1496 if (strchr(optarg, 'n')) {
1497 out_file_name_res = TRUE;
1499 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1500 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1504 case 'H': /* Read address to name mappings from a hosts file */
1505 if (! add_hosts_file(optarg))
1507 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1510 out_file_name_res = TRUE;
1513 case 'h': /* Print help and exit */
1514 printf("TShark (Wireshark) %s\n"
1515 "Dump and analyze network traffic.\n"
1516 "See https://www.wireshark.org for more information.\n",
1517 get_ws_vcs_version_info());
1518 print_usage(stdout);
1521 case 'l': /* "Line-buffer" standard output */
1522 /* This isn't line-buffering, strictly speaking, it's just
1523 flushing the standard output after the information for
1524 each packet is printed; however, that should be good
1525 enough for all the purposes to which "-l" is put (and
1526 is probably actually better for "-V", as it does fewer
1529 See the comment in "process_packet()" for an explanation of
1530 why we do that, and why we don't just use "setvbuf()" to
1531 make the standard output line-buffered (short version: in
1532 Windows, "line-buffered" is the same as "fully-buffered",
1533 and the output buffer is only flushed when it fills up). */
1534 line_buffered = TRUE;
1536 case 'L': /* Print list of link-layer types and exit */
1538 list_link_layer_types = TRUE;
1540 capture_option_specified = TRUE;
1544 case 'n': /* No name resolution */
1545 disable_name_resolution();
1547 case 'N': /* Select what types of addresses/port #s to resolve */
1548 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1549 if (badopt != '\0') {
1550 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1552 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1553 "\t'd' to enable address resolution from captured DNS packets\n"
1554 "\t'm' to enable MAC address resolution\n"
1555 "\t'n' to enable network address resolution\n"
1556 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1557 "\t for network address resolution\n"
1558 "\t't' to enable transport-layer port number resolution");
1562 case 'o': /* Override preference from command line */
1563 switch (prefs_set_pref(optarg)) {
1568 case PREFS_SET_SYNTAX_ERR:
1569 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1573 case PREFS_SET_NO_SUCH_PREF:
1574 case PREFS_SET_OBSOLETE:
1575 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1580 case 'q': /* Quiet */
1583 case 'Q': /* Really quiet */
1585 really_quiet = TRUE;
1587 case 'r': /* Read capture file x */
1588 cf_name = g_strdup(optarg);
1590 case 'R': /* Read file filter */
1594 /* already processed; just ignore it now */
1596 case 'S': /* Set the line Separator to be printed between packets */
1599 case 't': /* Time stamp type */
1600 if (strcmp(optarg, "r") == 0)
1601 timestamp_set_type(TS_RELATIVE);
1602 else if (strcmp(optarg, "a") == 0)
1603 timestamp_set_type(TS_ABSOLUTE);
1604 else if (strcmp(optarg, "ad") == 0)
1605 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1606 else if (strcmp(optarg, "adoy") == 0)
1607 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1608 else if (strcmp(optarg, "d") == 0)
1609 timestamp_set_type(TS_DELTA);
1610 else if (strcmp(optarg, "dd") == 0)
1611 timestamp_set_type(TS_DELTA_DIS);
1612 else if (strcmp(optarg, "e") == 0)
1613 timestamp_set_type(TS_EPOCH);
1614 else if (strcmp(optarg, "u") == 0)
1615 timestamp_set_type(TS_UTC);
1616 else if (strcmp(optarg, "ud") == 0)
1617 timestamp_set_type(TS_UTC_WITH_YMD);
1618 else if (strcmp(optarg, "udoy") == 0)
1619 timestamp_set_type(TS_UTC_WITH_YDOY);
1621 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1622 cmdarg_err_cont("\t\"a\" for absolute\n"
1623 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1624 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1625 "\t\"d\" for delta\n"
1626 "\t\"dd\" for delta displayed\n"
1627 "\t\"e\" for epoch\n"
1628 "\t\"r\" for relative\n"
1629 "\t\"u\" for absolute UTC\n"
1630 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1631 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1635 case 'T': /* printing Type */
1636 print_packet_info = TRUE;
1637 if (strcmp(optarg, "text") == 0) {
1638 output_action = WRITE_TEXT;
1639 print_format = PR_FMT_TEXT;
1640 } else if (strcmp(optarg, "ps") == 0) {
1641 output_action = WRITE_TEXT;
1642 print_format = PR_FMT_PS;
1643 } else if (strcmp(optarg, "pdml") == 0) {
1644 output_action = WRITE_XML;
1645 print_details = TRUE; /* Need details */
1646 print_summary = FALSE; /* Don't allow summary */
1647 } else if (strcmp(optarg, "psml") == 0) {
1648 output_action = WRITE_XML;
1649 print_details = FALSE; /* Don't allow details */
1650 print_summary = TRUE; /* Need summary */
1651 } else if (strcmp(optarg, "fields") == 0) {
1652 output_action = WRITE_FIELDS;
1653 print_details = TRUE; /* Need full tree info */
1654 print_summary = FALSE; /* Don't allow summary */
1656 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1657 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1658 "\t specified by the -E option.\n"
1659 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1660 "\t details of a decoded packet. This information is equivalent to\n"
1661 "\t the packet details printed with the -V flag.\n"
1662 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1663 "\t the packets, or a multi-line view of the details of each of\n"
1664 "\t the packets, depending on whether the -V flag was specified.\n"
1665 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1666 "\t summary information of a decoded packet. This information is\n"
1667 "\t equivalent to the information shown in the one-line summary\n"
1668 "\t printed by default.\n"
1669 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1670 "\t packets, or a multi-line view of the details of each of the\n"
1671 "\t packets, depending on whether the -V flag was specified.\n"
1672 "\t This is the default.");
1676 case 'u': /* Seconds type */
1677 if (strcmp(optarg, "s") == 0)
1678 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1679 else if (strcmp(optarg, "hms") == 0)
1680 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1682 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1683 cmdarg_err_cont("\t\"s\" for seconds\n"
1684 "\t\"hms\" for hours, minutes and seconds");
1688 case 'v': /* Show version and exit */
1689 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1690 epan_get_compiled_version_info);
1691 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1692 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1693 g_string_free(comp_info_str, TRUE);
1694 g_string_free(runtime_info_str, TRUE);
1695 /* We don't really have to cleanup here, but it's a convenient way to test
1696 * start-up and shut-down of the epan library without any UI-specific
1697 * cruft getting in the way. Makes the results of running
1698 * $ ./tools/valgrind-wireshark -n
1699 * much more useful. */
1702 case 'O': /* Only output these protocols */
1703 /* already processed; just ignore it now */
1705 case 'V': /* Verbose */
1706 /* already processed; just ignore it now */
1708 case 'x': /* Print packet data in hex (and ASCII) */
1709 /* already processed; just ignore it now */
1712 /* already processed; just ignore it now */
1718 /* We won't call the init function for the stat this soon
1719 as it would disallow MATE's fields (which are registered
1720 by the preferences set callback) from being used as
1721 part of a tap filter. Instead, we just add the argument
1722 to a list of stat arguments. */
1723 if (strcmp("help", optarg) == 0) {
1724 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1725 list_stat_cmd_args();
1728 if (!process_stat_cmd_arg(optarg)) {
1729 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1730 list_stat_cmd_args();
1734 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1735 disable_protocol_slist = g_slist_append(disable_protocol_slist, optarg);
1737 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1738 enable_heur_slist = g_slist_append(enable_heur_slist, optarg);
1740 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1741 disable_heur_slist = g_slist_append(disable_heur_slist, optarg);
1745 case '?': /* Bad flag - print usage message */
1748 list_capture_types();
1751 print_usage(stderr);
1758 /* If we specified output fields, but not the output field type... */
1759 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1760 cmdarg_err("Output fields were specified with \"-e\", "
1761 "but \"-Tfields\" was not specified.");
1763 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1764 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1765 "specified with \"-e\".");
1770 /* If no capture filter or display filter has been specified, and there are
1771 still command-line arguments, treat them as the tokens of a capture
1772 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1773 flag was specified. */
1774 if (optind < argc) {
1775 if (cf_name != NULL) {
1776 if (dfilter != NULL) {
1777 cmdarg_err("Display filters were specified both with \"-d\" "
1778 "and with additional command-line arguments.");
1781 dfilter = get_args_as_string(argc, argv, optind);
1786 if (global_capture_opts.default_options.cfilter) {
1787 cmdarg_err("A default capture filter was specified both with \"-f\""
1788 " and with additional command-line arguments.");
1791 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1792 interface_options interface_opts;
1793 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1794 if (interface_opts.cfilter == NULL) {
1795 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1796 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1797 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1799 cmdarg_err("A capture filter was specified both with \"-f\""
1800 " and with additional command-line arguments.");
1804 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1806 capture_option_specified = TRUE;
1812 if (!global_capture_opts.saving_to_file) {
1813 /* We're not saving the capture to a file; if "-q" wasn't specified,
1814 we should print packet information */
1816 print_packet_info = TRUE;
1818 /* We're saving to a file; if we're writing to the standard output.
1819 and we'll also be writing dissected packets to the standard
1820 output, reject the request. At best, we could redirect that
1821 to the standard error; we *can't* write both to the standard
1822 output and have either of them be useful. */
1823 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1824 cmdarg_err("You can't write both raw packet data and dissected packets"
1825 " to the standard output.");
1830 /* We're not saving the capture to a file; if "-q" wasn't specified,
1831 we should print packet information */
1833 print_packet_info = TRUE;
1836 #ifndef HAVE_LIBPCAP
1837 if (capture_option_specified)
1838 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1841 print_usage(stderr);
1846 if (output_action != WRITE_TEXT) {
1847 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1852 if (output_only != NULL) {
1855 if (!print_details) {
1856 cmdarg_err("-O requires -V");
1860 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1861 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1862 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1866 if (rfilter != NULL && !perform_two_pass_analysis) {
1867 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1872 if (list_link_layer_types) {
1873 /* We're supposed to list the link-layer types for an interface;
1874 did the user also specify a capture file to be read? */
1876 /* Yes - that's bogus. */
1877 cmdarg_err("You can't specify -L and a capture file to be read.");
1880 /* No - did they specify a ring buffer option? */
1881 if (global_capture_opts.multi_files_on) {
1882 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1888 * "-r" was specified, so we're reading a capture file.
1889 * Capture options don't apply here.
1892 /* We don't support capture filters when reading from a capture file
1893 (the BPF compiler doesn't support all link-layer types that we
1894 support in capture files we read). */
1895 if (global_capture_opts.default_options.cfilter) {
1896 cmdarg_err("Only read filters, not capture filters, "
1897 "can be specified when reading a capture file.");
1900 if (global_capture_opts.multi_files_on) {
1901 cmdarg_err("Multiple capture files requested, but "
1902 "a capture isn't being done.");
1905 if (global_capture_opts.has_file_duration) {
1906 cmdarg_err("Switching capture files after a time interval was specified, but "
1907 "a capture isn't being done.");
1910 if (global_capture_opts.has_ring_num_files) {
1911 cmdarg_err("A ring buffer of capture files was specified, but "
1912 "a capture isn't being done.");
1915 if (global_capture_opts.has_autostop_files) {
1916 cmdarg_err("A maximum number of capture files was specified, but "
1917 "a capture isn't being done.");
1920 if (global_capture_opts.capture_comment) {
1921 cmdarg_err("A capture comment was specified, but "
1922 "a capture isn't being done.\nThere's no support for adding "
1923 "a capture comment to an existing capture file.");
1927 /* Note: TShark now allows the restriction of a _read_ file by packet count
1928 * and byte count as well as a write file. Other autostop options remain valid
1929 * only for a write file.
1931 if (global_capture_opts.has_autostop_duration) {
1932 cmdarg_err("A maximum capture time was specified, but "
1933 "a capture isn't being done.");
1938 * "-r" wasn't specified, so we're doing a live capture.
1940 if (perform_two_pass_analysis) {
1941 /* Two-pass analysis doesn't work with live capture since it requires us
1942 * to buffer packets until we've read all of them, but a live capture
1943 * has no useful/meaningful definition of "all" */
1944 cmdarg_err("Live captures do not support two-pass analysis.");
1948 if (global_capture_opts.saving_to_file) {
1949 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1951 /* When capturing, we only support writing pcap or pcap-ng format. */
1952 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1953 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1954 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1957 if (global_capture_opts.capture_comment &&
1958 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1959 cmdarg_err("A capture comment can only be written to a pcapng file.");
1962 if (global_capture_opts.multi_files_on) {
1963 /* Multiple-file mode doesn't work under certain conditions:
1964 a) it doesn't work if you're writing to the standard output;
1965 b) it doesn't work if you're writing to a pipe;
1967 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1968 cmdarg_err("Multiple capture files requested, but "
1969 "the capture is being written to the standard output.");
1972 if (global_capture_opts.output_to_pipe) {
1973 cmdarg_err("Multiple capture files requested, but "
1974 "the capture file is a pipe.");
1977 if (!global_capture_opts.has_autostop_filesize &&
1978 !global_capture_opts.has_file_duration) {
1979 cmdarg_err("Multiple capture files requested, but "
1980 "no maximum capture file size or duration was specified.");
1984 /* Currently, we don't support read or display filters when capturing
1985 and saving the packets. */
1986 if (rfilter != NULL) {
1987 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1990 if (dfilter != NULL) {
1991 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1994 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1996 /* They didn't specify a "-w" flag, so we won't be saving to a
1997 capture file. Check for options that only make sense if
1998 we're saving to a file. */
1999 if (global_capture_opts.has_autostop_filesize) {
2000 cmdarg_err("Maximum capture file size specified, but "
2001 "capture isn't being saved to a file.");
2004 if (global_capture_opts.multi_files_on) {
2005 cmdarg_err("Multiple capture files requested, but "
2006 "the capture isn't being saved to a file.");
2009 if (global_capture_opts.capture_comment) {
2010 cmdarg_err("A capture comment was specified, but "
2011 "the capture isn't being saved to a file.");
2020 /* Start windows sockets */
2021 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
2024 /* Notify all registered modules that have had any of their preferences
2025 changed either from one of the preferences file or from the command
2026 line that their preferences have changed. */
2029 /* At this point MATE will have registered its field array so we can
2030 have a tap filter with one of MATE's late-registered fields as part
2031 of the filter. We can now process all the "-z" arguments. */
2032 start_requested_stats();
2034 /* At this point MATE will have registered its field array so we can
2035 check if the fields specified by the user are all good.
2039 GSList *invalid_fields = output_fields_valid(output_fields);
2040 if (invalid_fields != NULL) {
2042 cmdarg_err("Some fields aren't valid:");
2043 for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
2044 cmdarg_err_cont("\t%s", (gchar *)it->data);
2046 g_slist_free(invalid_fields);
2051 /* We currently don't support taps, or printing dissected packets,
2052 if we're writing to a pipe. */
2053 if (global_capture_opts.saving_to_file &&
2054 global_capture_opts.output_to_pipe) {
2055 if (tap_listeners_require_dissection()) {
2056 cmdarg_err("Taps aren't supported when saving to a pipe.");
2059 if (print_packet_info) {
2060 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
2066 if (ex_opt_count("read_format") > 0) {
2067 const gchar* name = ex_opt_get_next("read_format");
2068 in_file_type = open_info_name_to_type(name);
2069 if (in_file_type == WTAP_TYPE_AUTO) {
2070 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
2071 list_read_capture_types();
2076 /* disabled protocols as per configuration file */
2077 if (gdp_path == NULL && dp_path == NULL) {
2078 set_disabled_protos_list();
2079 set_disabled_heur_dissector_list();
2082 if(disable_protocol_slist) {
2083 GSList *proto_disable;
2084 for (proto_disable = disable_protocol_slist; proto_disable != NULL; proto_disable = g_slist_next(proto_disable))
2086 proto_disable_proto_by_name((char*)proto_disable->data);
2090 if(enable_heur_slist) {
2091 GSList *heur_enable;
2092 for (heur_enable = enable_heur_slist; heur_enable != NULL; heur_enable = g_slist_next(heur_enable))
2094 proto_enable_heuristic_by_name((char*)heur_enable->data, TRUE);
2098 if(disable_heur_slist) {
2099 GSList *heur_disable;
2100 for (heur_disable = disable_heur_slist; heur_disable != NULL; heur_disable = g_slist_next(heur_disable))
2102 proto_enable_heuristic_by_name((char*)heur_disable->data, FALSE);
2106 /* Build the column format array */
2107 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
2110 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
2111 capture_opts_trim_ring_num_files(&global_capture_opts);
2114 if (rfilter != NULL) {
2115 tshark_debug1("Compiling read filter: '%s'", rfilter);
2116 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
2117 cmdarg_err("%s", err_msg);
2120 #ifdef HAVE_PCAP_OPEN_DEAD
2124 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2126 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
2128 " Note: That read filter code looks like a valid capture filter;\n"
2129 " maybe you mixed them up?");
2138 cfile.rfcode = rfcode;
2140 if (dfilter != NULL) {
2141 tshark_debug1("Compiling display filter: '%s'", dfilter);
2142 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
2143 cmdarg_err("%s", err_msg);
2146 #ifdef HAVE_PCAP_OPEN_DEAD
2150 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2152 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
2154 " Note: That display filter code looks like a valid capture filter;\n"
2155 " maybe you mixed them up?");
2164 cfile.dfcode = dfcode;
2166 if (print_packet_info) {
2167 /* If we're printing as text or PostScript, we have
2168 to create a print stream. */
2169 if (output_action == WRITE_TEXT) {
2170 switch (print_format) {
2173 print_stream = print_stream_text_stdio_new(stdout);
2177 print_stream = print_stream_ps_stdio_new(stdout);
2181 g_assert_not_reached();
2186 /* We have to dissect each packet if:
2188 we're printing information about each packet;
2190 we're using a read filter on the packets;
2192 we're using a display filter on the packets;
2194 we're using any taps that need dissection. */
2195 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2196 tshark_debug1("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2199 tshark_debug1("tshark: Opening capture file: %s", cf_name);
2201 * We're reading a capture file.
2203 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2208 /* Process the packets in the file */
2209 tshark_debug0("tshark: invoking load_cap_file() to process the packets");
2212 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2213 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2214 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2216 err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2219 CATCH(OutOfMemoryError) {
2223 "Sorry, but TShark has to terminate now.\n"
2225 "More information and workarounds can be found at\n"
2226 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2231 /* We still dump out the results of taps, etc., as we might have
2232 read some packets; however, we exit with an error status. */
2236 tshark_debug0("tshark: no capture file specified");
2237 /* No capture file specified, so we're supposed to do a live capture
2238 or get a list of link-layer types for a live capture device;
2239 do we have support for live captures? */
2241 /* if no interface was specified, pick a default */
2242 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2243 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2244 if (exit_status != 0)
2247 /* if requested, list the link layer types and exit */
2248 if (list_link_layer_types) {
2251 /* Get the list of link-layer types for the capture devices. */
2252 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2253 interface_options interface_opts;
2254 if_capabilities_t *caps;
2255 char *auth_str = NULL;
2257 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2258 #ifdef HAVE_PCAP_REMOTE
2259 if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
2260 auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
2263 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
2266 cmdarg_err("%s", err_str);
2270 if (caps->data_link_types == NULL) {
2271 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2274 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2275 free_if_capabilities(caps);
2281 * If the standard error isn't a terminal, don't print packet counts,
2282 * as they won't show up on the user's terminal and they'll get in
2283 * the way of error messages in the file (to which we assume the
2284 * standard error was redirected; if it's redirected to the null
2285 * device, there's no point in printing packet counts anyway).
2287 * Otherwise, if we're printing packet information and the standard
2288 * output is a terminal (which we assume means the standard output and
2289 * error are going to the same terminal), don't print packet counts,
2290 * as they'll get in the way of the packet information.
2292 * Otherwise, if the user specified -q, don't print packet counts.
2294 * Otherwise, print packet counts.
2296 * XXX - what if the user wants to do a live capture, doesn't want
2297 * to save it to a file, doesn't want information printed for each
2298 * packet, does want some "-z" statistic, and wants packet counts
2299 * so they know whether they're seeing any packets? -q will
2300 * suppress the information printed for each packet, but it'll
2301 * also suppress the packet counts.
2303 if (!isatty(fileno(stderr)))
2304 print_packet_counts = FALSE;
2305 else if (print_packet_info && isatty(fileno(stdout)))
2306 print_packet_counts = FALSE;
2308 print_packet_counts = FALSE;
2310 print_packet_counts = TRUE;
2312 if (print_packet_info) {
2313 if (!write_preamble(&cfile)) {
2314 show_print_file_io_error(errno);
2319 tshark_debug0("tshark: performing live capture");
2321 * XXX - this returns FALSE if an error occurred, but it also
2322 * returns FALSE if the capture stops because a time limit
2323 * was reached (and possibly other limits), so we can't assume
2324 * it means an error.
2326 * The capture code is a bit twisty, so it doesn't appear to
2327 * be an easy fix. We just ignore the return value for now.
2328 * Instead, pass on the exit status from the capture child.
2331 exit_status = global_capture_session.fork_child_status;
2333 if (print_packet_info) {
2334 if (!write_finale()) {
2336 show_print_file_io_error(err);
2340 /* No - complain. */
2341 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2348 if (cfile.frames != NULL) {
2349 free_frame_data_sequence(cfile.frames);
2350 cfile.frames = NULL;
2353 draw_tap_listeners(TRUE);
2354 funnel_dump_all_text_windows();
2355 epan_free(cfile.epan);
2358 output_fields_free(output_fields);
2359 output_fields = NULL;
2364 /*#define USE_BROKEN_G_MAIN_LOOP*/
2366 #ifdef USE_BROKEN_G_MAIN_LOOP
2369 gboolean loop_running = FALSE;
2371 guint32 packet_count = 0;
2374 typedef struct pipe_input_tag {
2377 ws_process_id *child_process;
2378 pipe_input_cb_t input_cb;
2379 guint pipe_input_id;
2381 GMutex *callback_running;
2385 static pipe_input_t pipe_input;
2388 /* The timer has expired, see if there's stuff to read from the pipe,
2389 if so, do the callback */
2391 pipe_timer_cb(gpointer data)
2397 pipe_input_t *pipe_input_p = data;
2398 gint iterations = 0;
2400 g_mutex_lock (pipe_input_p->callback_running);
2402 /* try to read data from the pipe only 5 times, to avoid blocking */
2403 while(iterations < 5) {
2404 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2406 /* Oddly enough although Named pipes don't work on win9x,
2407 PeekNamedPipe does !!! */
2408 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2409 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2411 /* Get the child process exit status */
2412 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2415 /* If the Peek returned an error, or there are bytes to be read
2416 or the childwatcher thread has terminated then call the normal
2418 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2420 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2422 /* And call the real handler */
2423 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2424 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2425 /* pipe closed, return false so that the timer is stopped */
2426 g_mutex_unlock (pipe_input_p->callback_running);
2431 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2432 /* No data, stop now */
2439 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2441 g_mutex_unlock (pipe_input_p->callback_running);
2443 /* we didn't stopped the timer, so let it run */
2450 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2453 pipe_input.source = source;
2454 pipe_input.child_process = child_process;
2455 pipe_input.user_data = user_data;
2456 pipe_input.input_cb = input_cb;
2459 #if GLIB_CHECK_VERSION(2,31,0)
2460 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2461 g_mutex_init(pipe_input.callback_running);
2463 pipe_input.callback_running = g_mutex_new();
2465 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2466 do this but that doesn't cover all win32 platforms. GTK can do
2467 this but doesn't seem to work over processes. Attempt to do
2468 something similar here, start a timer and check for data on every
2470 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2471 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2475 static const nstime_t *
2476 tshark_get_frame_ts(void *data, guint32 frame_num)
2478 capture_file *cf = (capture_file *) data;
2480 if (ref && ref->num == frame_num)
2481 return &ref->abs_ts;
2483 if (prev_dis && prev_dis->num == frame_num)
2484 return &prev_dis->abs_ts;
2486 if (prev_cap && prev_cap->num == frame_num)
2487 return &prev_cap->abs_ts;
2490 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2492 return (fd) ? &fd->abs_ts : NULL;
2499 tshark_epan_new(capture_file *cf)
2501 epan_t *epan = epan_new();
2504 epan->get_frame_ts = tshark_get_frame_ts;
2505 epan->get_interface_name = cap_file_get_interface_name;
2506 epan->get_user_comment = NULL;
2518 #ifdef USE_TSHARK_SELECT
2522 struct sigaction action, oldaction;
2525 /* Create new dissection section. */
2526 epan_free(cfile.epan);
2527 cfile.epan = tshark_epan_new(&cfile);
2530 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2531 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2533 /* Catch SIGINT and SIGTERM and, if we get either of them,
2534 clean up and exit. If SIGHUP isn't being ignored, catch
2535 it too and, if we get it, clean up and exit.
2537 We restart any read that was in progress, so that it doesn't
2538 disrupt reading from the sync pipe. The signal handler tells
2539 the capture child to finish; it will report that it finished,
2540 or will exit abnormally, so we'll stop reading from the sync
2541 pipe, pick up the exit status, and quit. */
2542 memset(&action, 0, sizeof(action));
2543 action.sa_handler = capture_cleanup;
2544 action.sa_flags = SA_RESTART;
2545 sigemptyset(&action.sa_mask);
2546 sigaction(SIGTERM, &action, NULL);
2547 sigaction(SIGINT, &action, NULL);
2548 sigaction(SIGHUP, NULL, &oldaction);
2549 if (oldaction.sa_handler == SIG_DFL)
2550 sigaction(SIGHUP, &action, NULL);
2553 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2554 quiet mode, report the number of packets we've captured.
2556 Again, restart any read that was in progress, so that it doesn't
2557 disrupt reading from the sync pipe. */
2558 action.sa_handler = report_counts_siginfo;
2559 action.sa_flags = SA_RESTART;
2560 sigemptyset(&action.sa_mask);
2561 sigaction(SIGINFO, &action, NULL);
2562 #endif /* SIGINFO */
2565 global_capture_session.state = CAPTURE_PREPARING;
2567 /* Let the user know which interfaces were chosen. */
2568 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2569 interface_options interface_opts;
2571 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2572 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2573 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2574 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2576 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2577 if (really_quiet == FALSE)
2578 fprintf(stderr, "Capturing on %s\n", str->str);
2580 g_string_free(str, TRUE);
2582 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2587 /* the actual capture loop
2589 * XXX - glib doesn't seem to provide any event based loop handling.
2591 * XXX - for whatever reason,
2592 * calling g_main_loop_new() ends up in 100% cpu load.
2594 * But that doesn't matter: in UNIX we can use select() to find an input
2595 * source with something to do.
2597 * But that doesn't matter because we're in a CLI (that doesn't need to
2598 * update a GUI or something at the same time) so it's OK if we block
2599 * trying to read from the pipe.
2601 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2602 * wrong (but I leave it there in case I am...).
2605 #ifdef USE_TSHARK_SELECT
2607 FD_SET(pipe_input.source, &readfds);
2610 loop_running = TRUE;
2614 while (loop_running)
2616 #ifdef USE_TSHARK_SELECT
2617 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2621 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2623 } else if (ret == 1) {
2625 /* Call the real handler */
2626 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2627 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2630 #ifdef USE_TSHARK_SELECT
2635 CATCH(OutOfMemoryError) {
2639 "Sorry, but TShark has to terminate now.\n"
2641 "More information and workarounds can be found at\n"
2642 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2649 /* capture child detected an error */
2651 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2653 cmdarg_err("%s", error_msg);
2654 cmdarg_err_cont("%s", secondary_error_msg);
2658 /* capture child detected an capture filter related error */
2660 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2662 capture_options *capture_opts = cap_session->capture_opts;
2663 dfilter_t *rfcode = NULL;
2664 interface_options interface_opts;
2666 g_assert(i < capture_opts->ifaces->len);
2667 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2669 if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
2671 "Invalid capture filter \"%s\" for interface '%s'.\n"
2673 "That string looks like a valid display filter; however, it isn't a valid\n"
2674 "capture filter (%s).\n"
2676 "Note that display filters and capture filters don't have the same syntax,\n"
2677 "so you can't use most display filter expressions as capture filters.\n"
2679 "See the User's Guide for a description of the capture filter syntax.",
2680 interface_opts.cfilter, interface_opts.descr, error_message);
2681 dfilter_free(rfcode);
2684 "Invalid capture filter \"%s\" for interface '%s'.\n"
2686 "That string isn't a valid capture filter (%s).\n"
2687 "See the User's Guide for a description of the capture filter syntax.",
2688 interface_opts.cfilter, interface_opts.descr, error_message);
2693 /* capture child tells us we have a new (or the first) capture file */
2695 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2697 capture_options *capture_opts = cap_session->capture_opts;
2698 capture_file *cf = (capture_file *) cap_session->cf;
2699 gboolean is_tempfile;
2702 if (cap_session->state == CAPTURE_PREPARING) {
2703 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2705 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2707 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2709 /* free the old filename */
2710 if (capture_opts->save_file != NULL) {
2712 /* we start a new capture file, close the old one (if we had one before) */
2713 if (cf->state != FILE_CLOSED) {
2714 if (cf->wth != NULL) {
2715 wtap_close(cf->wth);
2718 cf->state = FILE_CLOSED;
2721 g_free(capture_opts->save_file);
2722 is_tempfile = FALSE;
2724 epan_free(cf->epan);
2725 cf->epan = tshark_epan_new(cf);
2727 /* we didn't had a save_file before, must be a tempfile */
2731 /* save the new filename */
2732 capture_opts->save_file = g_strdup(new_file);
2734 /* if we are in real-time mode, open the new file now */
2735 if (do_dissection) {
2736 /* this is probably unecessary, but better safe than sorry */
2737 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2738 /* Attempt to open the capture file and set up to read from it. */
2739 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2743 /* Don't unlink (delete) the save file - leave it around,
2744 for debugging purposes. */
2745 g_free(capture_opts->save_file);
2746 capture_opts->save_file = NULL;
2751 cap_session->state = CAPTURE_RUNNING;
2757 /* capture child tells us we have new packets to read */
2759 capture_input_new_packets(capture_session *cap_session, int to_read)
2765 capture_file *cf = (capture_file *)cap_session->cf;
2766 gboolean filtering_tap_listeners;
2771 * Prevent a SIGINFO handler from writing to the standard error while
2772 * we're doing so or writing to the standard output; instead, have it
2773 * just set a flag telling us to print that information when we're done.
2776 #endif /* SIGINFO */
2778 /* Do we have any tap listeners with filters? */
2779 filtering_tap_listeners = have_filtering_tap_listeners();
2781 /* Get the union of the flags for all tap listeners. */
2782 tap_flags = union_of_tap_listener_flags();
2784 if (do_dissection) {
2785 gboolean create_proto_tree;
2786 epan_dissect_t *edt;
2788 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2789 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2790 create_proto_tree = TRUE;
2792 create_proto_tree = FALSE;
2794 /* The protocol tree will be "visible", i.e., printed, only if we're
2795 printing packet details, which is true if we're printing stuff
2796 ("print_packet_info" is true) and we're in verbose mode
2797 ("packet_details" is true). */
2798 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2800 while (to_read-- && cf->wth) {
2801 wtap_cleareof(cf->wth);
2802 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2804 /* read from file failed, tell the capture child to stop */
2805 sync_pipe_stop(cap_session);
2806 wtap_close(cf->wth);
2809 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2810 wtap_buf_ptr(cf->wth),
2814 /* packet successfully read and gone through the "Read Filter" */
2819 epan_dissect_free(edt);
2823 * Dumpcap's doing all the work; we're not doing any dissection.
2824 * Count all the packets it wrote.
2826 packet_count += to_read;
2829 if (print_packet_counts) {
2830 /* We're printing packet counts. */
2831 if (packet_count != 0) {
2832 fprintf(stderr, "\r%u ", packet_count);
2833 /* stderr could be line buffered */
2840 * Allow SIGINFO handlers to write.
2845 * If a SIGINFO handler asked us to write out capture counts, do so.
2849 #endif /* SIGINFO */
2855 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2856 /* Report the count only if we aren't printing a packet count
2857 as packets arrive. */
2858 fprintf(stderr, "%u packet%s captured\n", packet_count,
2859 plurality(packet_count, "", "s"));
2862 infoprint = FALSE; /* we just reported it */
2863 #endif /* SIGINFO */
2868 report_counts_siginfo(int signum _U_)
2870 int sav_errno = errno;
2871 /* If we've been told to delay printing, just set a flag asking
2872 that we print counts (if we're supposed to), otherwise print
2873 the count of packets captured (if we're supposed to). */
2880 #endif /* SIGINFO */
2883 /* capture child detected any packet drops? */
2885 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2887 if (print_packet_counts) {
2888 /* We're printing packet counts to stderr.
2889 Send a newline so that we move to the line after the packet count. */
2890 fprintf(stderr, "\n");
2894 /* We're printing packet counts to stderr.
2895 Send a newline so that we move to the line after the packet count. */
2896 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2902 * Capture child closed its side of the pipe, report any error and
2903 * do the required cleanup.
2906 capture_input_closed(capture_session *cap_session, gchar *msg)
2908 capture_file *cf = (capture_file *) cap_session->cf;
2911 fprintf(stderr, "tshark: %s\n", msg);
2915 if (cf != NULL && cf->wth != NULL) {
2916 wtap_close(cf->wth);
2917 if (cf->is_tempfile) {
2918 ws_unlink(cf->filename);
2921 #ifdef USE_BROKEN_G_MAIN_LOOP
2922 /*g_main_loop_quit(loop);*/
2923 g_main_loop_quit(loop);
2925 loop_running = FALSE;
2934 capture_cleanup(DWORD ctrltype _U_)
2936 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2937 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2938 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2939 like SIGTERM at least when the machine's shutting down.
2941 For now, we handle them all as indications that we should clean up
2942 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2945 We must return TRUE so that no other handler - such as one that would
2946 terminate the process - gets called.
2948 XXX - for some reason, typing ^C to TShark, if you run this in
2949 a Cygwin console window in at least some versions of Cygwin,
2950 causes TShark to terminate immediately; this routine gets
2951 called, but the main loop doesn't get a chance to run and
2952 exit cleanly, at least if this is compiled with Microsoft Visual
2953 C++ (i.e., it's a property of the Cygwin console window or Bash;
2954 it happens if TShark is not built with Cygwin - for all I know,
2955 building it with Cygwin may make the problem go away). */
2957 /* tell the capture child to stop */
2958 sync_pipe_stop(&global_capture_session);
2960 /* don't stop our own loop already here, otherwise status messages and
2961 * cleanup wouldn't be done properly. The child will indicate the stop of
2962 * everything by calling capture_input_closed() later */
2968 capture_cleanup(int signum _U_)
2970 /* tell the capture child to stop */
2971 sync_pipe_stop(&global_capture_session);
2973 /* don't stop our own loop already here, otherwise status messages and
2974 * cleanup wouldn't be done properly. The child will indicate the stop of
2975 * everything by calling capture_input_closed() later */
2978 #endif /* HAVE_LIBPCAP */
2981 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2982 gint64 offset, struct wtap_pkthdr *whdr,
2989 /* The frame number of this packet is one more than the count of
2990 frames in this packet. */
2991 framenum = cf->count + 1;
2993 /* If we're not running a display filter and we're not printing any
2994 packet information, we don't need to do a dissection. This means
2995 that all packets can be marked as 'passed'. */
2998 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
3000 /* If we're going to print packet information, or we're going to
3001 run a read filter, or display filter, or we're going to process taps, set up to
3002 do a dissection and do so. */
3004 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3005 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3006 /* Grab any resolved addresses */
3007 host_name_lookup_process();
3009 /* If we're running a read filter, prime the epan_dissect_t with that
3012 epan_dissect_prime_dfilter(edt, cf->rfcode);
3015 epan_dissect_prime_dfilter(edt, cf->dfcode);
3017 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
3019 if (ref == &fdlocal) {
3020 ref_frame = fdlocal;
3024 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
3026 /* Run the read filter if we have one. */
3028 passed = dfilter_apply_edt(cf->rfcode, edt);
3032 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
3033 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
3035 /* If we're not doing dissection then there won't be any dependent frames.
3036 * More importantly, edt.pi.dependent_frames won't be initialized because
3037 * epan hasn't been initialized.
3038 * if we *are* doing dissection, then mark the dependent frames, but only
3039 * if a display filter was given and it matches this packet.
3041 if (edt && cf->dfcode) {
3042 if (dfilter_apply_edt(cf->dfcode, edt)) {
3043 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
3049 /* if we don't add it to the frame_data_sequence, clean it up right now
3051 frame_data_destroy(&fdlocal);
3055 epan_dissect_reset(edt);
3061 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
3062 struct wtap_pkthdr *phdr, Buffer *buf,
3068 /* If we're not running a display filter and we're not printing any
3069 packet information, we don't need to do a dissection. This means
3070 that all packets can be marked as 'passed'. */
3073 /* If we're going to print packet information, or we're going to
3074 run a read filter, or we're going to process taps, set up to
3075 do a dissection and do so. */
3077 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3078 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3079 /* Grab any resolved addresses */
3080 host_name_lookup_process();
3082 /* If we're running a display filter, prime the epan_dissect_t with that
3085 epan_dissect_prime_dfilter(edt, cf->dfcode);
3087 col_custom_prime_edt(edt, &cf->cinfo);
3089 /* We only need the columns if either
3090 1) some tap needs the columns
3092 2) we're printing packet info but we're *not* verbose; in verbose
3093 mode, we print the protocol tree, not the protocol summary.
3095 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3100 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3107 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
3109 /* Run the read/display filter if we have one. */
3111 passed = dfilter_apply_edt(cf->dfcode, edt);
3115 frame_data_set_after_dissect(fdata, &cum_bytes);
3116 /* Process this packet. */
3117 if (print_packet_info) {
3118 /* We're printing packet information; print the information for
3120 print_packet(cf, edt);
3122 /* The ANSI C standard does not appear to *require* that a line-buffered
3123 stream be flushed to the host environment whenever a newline is
3124 written, it just says that, on such a stream, characters "are
3125 intended to be transmitted to or from the host environment as a
3126 block when a new-line character is encountered".
3128 The Visual C++ 6.0 C implementation doesn't do what is intended;
3129 even if you set a stream to be line-buffered, it still doesn't
3130 flush the buffer at the end of every line.
3132 So, if the "-l" flag was specified, we flush the standard output
3133 at the end of a packet. This will do the right thing if we're
3134 printing packet summary lines, and, as we print the entire protocol
3135 tree for a single packet without waiting for anything to happen,
3136 it should be as good as line-buffered mode if we're printing
3137 protocol trees. (The whole reason for the "-l" flag in either
3138 tcpdump or TShark is to allow the output of a live capture to
3139 be piped to a program or script and to have that script see the
3140 information for the packet as soon as it's printed, rather than
3141 having to wait until a standard I/O buffer fills up. */
3145 if (ferror(stdout)) {
3146 show_print_file_io_error(errno);
3155 epan_dissect_reset(edt);
3157 return passed || fdata->flags.dependent_of_displayed;
3161 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3162 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3165 int snapshot_length;
3169 gchar *err_info = NULL;
3171 char *save_file_string = NULL;
3172 gboolean filtering_tap_listeners;
3174 wtapng_section_t *shb_hdr = NULL;
3175 wtapng_iface_descriptions_t *idb_inf = NULL;
3176 wtapng_name_res_t *nrb_hdr = NULL;
3177 struct wtap_pkthdr phdr;
3179 epan_dissect_t *edt = NULL;
3181 wtap_phdr_init(&phdr);
3183 idb_inf = wtap_file_get_idb_info(cf->wth);
3184 #ifdef PCAP_NG_DEFAULT
3185 if (idb_inf->interface_data->len > 1) {
3186 linktype = WTAP_ENCAP_PER_PACKET;
3188 linktype = wtap_file_encap(cf->wth);
3191 linktype = wtap_file_encap(cf->wth);
3193 if (save_file != NULL) {
3194 /* Get a string that describes what we're writing to */
3195 save_file_string = output_file_description(save_file);
3197 /* Set up to write to the capture file. */
3198 snapshot_length = wtap_snapshot_length(cf->wth);
3199 if (snapshot_length == 0) {
3200 /* Snapshot length of input file not known. */
3201 snapshot_length = WTAP_MAX_PACKET_SIZE;
3203 tshark_debug1("tshark: snapshot_length = %d", snapshot_length);
3205 shb_hdr = wtap_file_get_shb_for_new_file(cf->wth);
3206 nrb_hdr = wtap_file_get_nrb_for_new_file(cf->wth);
3208 /* If we don't have an application name add Tshark */
3209 if (shb_hdr->shb_user_appl == NULL) {
3210 /* this is free'd by wtap_free_shb() later */
3211 shb_hdr->shb_user_appl = g_strdup_printf("TShark (Wireshark) %s", get_ws_vcs_version_info());
3214 if (linktype != WTAP_ENCAP_PER_PACKET &&
3215 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3216 tshark_debug1("tshark: writing PCAP format to %s", save_file);
3217 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3218 snapshot_length, FALSE /* compressed */, &err);
3221 tshark_debug2("tshark: writing format type %d, to %s", out_file_type, save_file);
3222 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3223 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
3230 /* We couldn't set up to write to the capture file. */
3233 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
3234 cmdarg_err("Capture files can't be written in that format.");
3237 case WTAP_ERR_UNWRITABLE_ENCAP:
3238 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3239 cmdarg_err("The capture file being read can't be written as a "
3240 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3243 case WTAP_ERR_CANT_OPEN:
3244 cmdarg_err("The %s couldn't be created for some "
3245 "unknown reason.", save_file_string);
3248 case WTAP_ERR_SHORT_WRITE:
3249 cmdarg_err("A full header couldn't be written to the %s.",
3254 cmdarg_err("The %s could not be created: %s.", save_file_string,
3255 wtap_strerror(err));
3261 if (print_packet_info) {
3262 if (!write_preamble(cf)) {
3264 show_print_file_io_error(err);
3273 /* Do we have any tap listeners with filters? */
3274 filtering_tap_listeners = have_filtering_tap_listeners();
3276 /* Get the union of the flags for all tap listeners. */
3277 tap_flags = union_of_tap_listener_flags();
3279 if (perform_two_pass_analysis) {
3282 tshark_debug1("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3284 /* Allocate a frame_data_sequence for all the frames. */
3285 cf->frames = new_frame_data_sequence();
3287 if (do_dissection) {
3288 gboolean create_proto_tree = FALSE;
3290 /* If we're going to be applying a filter, we'll need to
3291 create a protocol tree against which to apply the filter. */
3292 if (cf->rfcode || cf->dfcode)
3293 create_proto_tree = TRUE;
3295 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3297 /* We're not going to display the protocol tree on this pass,
3298 so it's not going to be "visible". */
3299 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3302 tshark_debug0("tshark: reading records for first pass");
3303 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3304 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3305 wtap_buf_ptr(cf->wth))) {
3306 /* Stop reading if we have the maximum number of packets;
3307 * When the -c option has not been used, max_packet_count
3308 * starts at 0, which practically means, never stop reading.
3309 * (unless we roll over max_packet_count ?)
3311 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3312 tshark_debug3("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3313 max_packet_count, data_offset, max_byte_count);
3314 err = 0; /* This is not an error */
3321 epan_dissect_free(edt);
3325 /* Close the sequential I/O side, to free up memory it requires. */
3326 wtap_sequential_close(cf->wth);
3328 /* Allow the protocol dissectors to free up memory that they
3329 * don't need after the sequential run-through of the packets. */
3330 postseq_cleanup_all_protocols();
3334 ws_buffer_init(&buf, 1500);
3336 tshark_debug0("tshark: done with first pass");
3338 if (do_dissection) {
3339 gboolean create_proto_tree;
3341 if (cf->dfcode || print_details || filtering_tap_listeners ||
3342 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3343 create_proto_tree = TRUE;
3345 create_proto_tree = FALSE;
3347 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3349 /* The protocol tree will be "visible", i.e., printed, only if we're
3350 printing packet details, which is true if we're printing stuff
3351 ("print_packet_info" is true) and we're in verbose mode
3352 ("packet_details" is true). */
3353 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3356 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3357 fdata = frame_data_sequence_find(cf->frames, framenum);
3358 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3360 tshark_debug1("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3361 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3363 /* Either there's no read filtering or this packet passed the
3364 filter, so, if we're writing to a capture file, write
3367 tshark_debug1("tshark: writing packet #%d to outfile", framenum);
3368 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3369 /* Error writing to a capture file */
3370 tshark_debug1("tshark: error writing to a capture file (%d)", err);
3373 case WTAP_ERR_UNWRITABLE_ENCAP:
3375 * This is a problem with the particular frame we're writing
3376 * and the file type and subtype we're writing; note that,
3377 * and report the frame number and file type/subtype.
3379 * XXX - framenum is not necessarily the frame number in
3380 * the input file if there was a read filter.
3383 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3384 framenum, cf->filename,
3385 wtap_file_type_subtype_short_string(out_file_type));
3388 case WTAP_ERR_PACKET_TOO_LARGE:
3390 * This is a problem with the particular frame we're writing
3391 * and the file type and subtype we're writing; note that,
3392 * and report the frame number and file type/subtype.
3394 * XXX - framenum is not necessarily the frame number in
3395 * the input file if there was a read filter.
3398 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3399 framenum, cf->filename,
3400 wtap_file_type_subtype_short_string(out_file_type));
3403 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3405 * This is a problem with the particular record we're writing
3406 * and the file type and subtype we're writing; note that,
3407 * and report the record number and file type/subtype.
3409 * XXX - framenum is not necessarily the record number in
3410 * the input file if there was a read filter.
3413 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3414 framenum, cf->filename,
3415 wtap_file_type_subtype_short_string(out_file_type));
3418 case WTAP_ERR_UNWRITABLE_REC_DATA:
3420 * This is a problem with the particular record we're writing
3421 * and the file type and subtype we're writing; note that,
3422 * and report the record number and file type/subtype.
3424 * XXX - framenum is not necessarily the record number in
3425 * the input file if there was a read filter.
3428 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3429 framenum, cf->filename,
3430 wtap_file_type_subtype_short_string(out_file_type),
3431 err_info != NULL ? err_info : "no information supplied");
3436 show_capture_file_io_error(save_file, err, FALSE);
3439 wtap_dump_close(pdh, &err);
3440 wtap_free_shb(shb_hdr);
3441 wtap_free_nrb(nrb_hdr);
3450 epan_dissect_free(edt);
3454 ws_buffer_free(&buf);
3456 tshark_debug0("tshark: done with second pass");
3459 /* !perform_two_pass_analysis */
3462 tshark_debug1("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3464 if (do_dissection) {
3465 gboolean create_proto_tree;
3467 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3468 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3469 create_proto_tree = TRUE;
3471 create_proto_tree = FALSE;
3473 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3475 /* The protocol tree will be "visible", i.e., printed, only if we're
3476 printing packet details, which is true if we're printing stuff
3477 ("print_packet_info" is true) and we're in verbose mode
3478 ("packet_details" is true). */
3479 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3482 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3485 tshark_debug1("tshark: processing packet #%d", framenum);
3487 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3488 wtap_buf_ptr(cf->wth),
3490 /* Either there's no read filtering or this packet passed the
3491 filter, so, if we're writing to a capture file, write
3494 tshark_debug1("tshark: writing packet #%d to outfile", framenum);
3495 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3496 /* Error writing to a capture file */
3497 tshark_debug1("tshark: error writing to a capture file (%d)", err);
3500 case WTAP_ERR_UNWRITABLE_ENCAP:
3502 * This is a problem with the particular frame we're writing
3503 * and the file type and subtype we're writing; note that,
3504 * and report the frame number and file type/subtype.
3507 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3508 framenum, cf->filename,
3509 wtap_file_type_subtype_short_string(out_file_type));
3512 case WTAP_ERR_PACKET_TOO_LARGE:
3514 * This is a problem with the particular frame we're writing
3515 * and the file type and subtype we're writing; note that,
3516 * and report the frame number and file type/subtype.
3519 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3520 framenum, cf->filename,
3521 wtap_file_type_subtype_short_string(out_file_type));
3524 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3526 * This is a problem with the particular record we're writing
3527 * and the file type and subtype we're writing; note that,
3528 * and report the record number and file type/subtype.
3531 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3532 framenum, cf->filename,
3533 wtap_file_type_subtype_short_string(out_file_type));
3536 case WTAP_ERR_UNWRITABLE_REC_DATA:
3538 * This is a problem with the particular record we're writing
3539 * and the file type and subtype we're writing; note that,
3540 * and report the record number and file type/subtype.
3543 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3544 framenum, cf->filename,
3545 wtap_file_type_subtype_short_string(out_file_type),
3546 err_info != NULL ? err_info : "no information supplied");
3551 show_capture_file_io_error(save_file, err, FALSE);
3554 wtap_dump_close(pdh, &err);
3555 wtap_free_shb(shb_hdr);
3556 wtap_free_nrb(nrb_hdr);
3561 /* Stop reading if we have the maximum number of packets;
3562 * When the -c option has not been used, max_packet_count
3563 * starts at 0, which practically means, never stop reading.
3564 * (unless we roll over max_packet_count ?)
3566 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3567 tshark_debug3("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3568 max_packet_count, data_offset, max_byte_count);
3569 err = 0; /* This is not an error */
3575 epan_dissect_free(edt);
3580 wtap_phdr_cleanup(&phdr);
3583 tshark_debug1("tshark: something failed along the line (%d)", err);
3585 * Print a message noting that the read failed somewhere along the line.
3587 * If we're printing packet data, and the standard output and error are
3588 * going to the same place, flush the standard output, so everything
3589 * buffered up is written, and then print a newline to the standard error
3590 * before printing the error message, to separate it from the packet
3591 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3592 * the _fstat() documentation at Microsoft doesn't indicate whether
3593 * st_ino is even supported.)
3596 if (print_packet_info) {
3597 ws_statb64 stat_stdout, stat_stderr;
3599 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3600 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3601 stat_stdout.st_ino == stat_stderr.st_ino) {
3603 fprintf(stderr, "\n");
3610 case WTAP_ERR_UNSUPPORTED:
3611 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3613 err_info != NULL ? err_info : "no information supplied");
3617 case WTAP_ERR_SHORT_READ:
3618 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3622 case WTAP_ERR_BAD_FILE:
3623 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3625 err_info != NULL ? err_info : "no information supplied");
3629 case WTAP_ERR_DECOMPRESS:
3630 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3631 "(%s)", cf->filename,
3632 err_info != NULL ? err_info : "no information supplied");
3637 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3638 cf->filename, wtap_strerror(err));
3641 if (save_file != NULL) {
3642 /* Now close the capture file. */
3643 if (!wtap_dump_close(pdh, &err))
3644 show_capture_file_io_error(save_file, err, TRUE);
3647 if (save_file != NULL) {
3648 if (pdh && out_file_name_res) {
3649 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3650 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3651 wtap_file_type_subtype_short_string(out_file_type));
3654 /* Now close the capture file. */
3655 if (!wtap_dump_close(pdh, &err))
3656 show_capture_file_io_error(save_file, err, TRUE);
3658 if (print_packet_info) {
3659 if (!write_finale()) {
3661 show_print_file_io_error(err);
3668 wtap_close(cf->wth);
3671 g_free(save_file_string);
3672 wtap_free_shb(shb_hdr);
3673 wtap_free_nrb(nrb_hdr);
3679 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3680 const guchar *pd, guint tap_flags)
3686 /* Count this packet. */
3689 /* If we're not running a display filter and we're not printing any
3690 packet information, we don't need to do a dissection. This means
3691 that all packets can be marked as 'passed'. */
3694 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3696 /* If we're going to print packet information, or we're going to
3697 run a read filter, or we're going to process taps, set up to
3698 do a dissection and do so. */
3700 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3701 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3702 /* Grab any resolved addresses */
3703 host_name_lookup_process();
3705 /* If we're running a filter, prime the epan_dissect_t with that
3708 epan_dissect_prime_dfilter(edt, cf->dfcode);
3710 col_custom_prime_edt(edt, &cf->cinfo);
3712 /* We only need the columns if either
3713 1) some tap needs the columns
3715 2) we're printing packet info but we're *not* verbose; in verbose
3716 mode, we print the protocol tree, not the protocol summary.
3718 3) there is a column mapped as an individual field */
3719 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3724 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3726 if (ref == &fdata) {
3731 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3733 /* Run the filter if we have it. */
3735 passed = dfilter_apply_edt(cf->dfcode, edt);
3739 frame_data_set_after_dissect(&fdata, &cum_bytes);
3741 /* Process this packet. */
3742 if (print_packet_info) {
3743 /* We're printing packet information; print the information for
3745 print_packet(cf, edt);
3747 /* The ANSI C standard does not appear to *require* that a line-buffered
3748 stream be flushed to the host environment whenever a newline is
3749 written, it just says that, on such a stream, characters "are
3750 intended to be transmitted to or from the host environment as a
3751 block when a new-line character is encountered".
3753 The Visual C++ 6.0 C implementation doesn't do what is intended;
3754 even if you set a stream to be line-buffered, it still doesn't
3755 flush the buffer at the end of every line.
3757 So, if the "-l" flag was specified, we flush the standard output
3758 at the end of a packet. This will do the right thing if we're
3759 printing packet summary lines, and, as we print the entire protocol
3760 tree for a single packet without waiting for anything to happen,
3761 it should be as good as line-buffered mode if we're printing
3762 protocol trees. (The whole reason for the "-l" flag in either
3763 tcpdump or TShark is to allow the output of a live capture to
3764 be piped to a program or script and to have that script see the
3765 information for the packet as soon as it's printed, rather than
3766 having to wait until a standard I/O buffer fills up. */
3770 if (ferror(stdout)) {
3771 show_print_file_io_error(errno);
3776 /* this must be set after print_packet() [bug #8160] */
3777 prev_dis_frame = fdata;
3778 prev_dis = &prev_dis_frame;
3781 prev_cap_frame = fdata;
3782 prev_cap = &prev_cap_frame;
3785 epan_dissect_reset(edt);
3786 frame_data_destroy(&fdata);
3792 write_preamble(capture_file *cf)
3794 switch (output_action) {
3797 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3801 write_pdml_preamble(stdout, cf->filename);
3803 write_psml_preamble(&cf->cinfo, stdout);
3804 return !ferror(stdout);
3807 write_fields_preamble(output_fields, stdout);
3808 return !ferror(stdout);
3811 g_assert_not_reached();
3817 get_line_buf(size_t len)
3819 static char *line_bufp = NULL;
3820 static size_t line_buf_len = 256;
3821 size_t new_line_buf_len;
3823 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3824 new_line_buf_len *= 2)
3826 if (line_bufp == NULL) {
3827 line_buf_len = new_line_buf_len;
3828 line_bufp = (char *)g_malloc(line_buf_len + 1);
3830 if (new_line_buf_len > line_buf_len) {
3831 line_buf_len = new_line_buf_len;
3832 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3839 put_string(char *dest, const char *str, size_t str_len)
3841 memcpy(dest, str, str_len);
3842 dest[str_len] = '\0';
3846 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3850 for (i = str_len; i < str_with_spaces; i++)
3853 put_string(dest, str, str_len);
3857 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3861 memcpy(dest, str, str_len);
3862 for (i = str_len; i < str_with_spaces; i++)
3865 dest[str_with_spaces] = '\0';
3869 print_columns(capture_file *cf)
3876 col_item_t* col_item;
3878 line_bufp = get_line_buf(256);
3881 for (i = 0; i < cf->cinfo.num_cols; i++) {
3882 col_item = &cf->cinfo.columns[i];
3883 /* Skip columns not marked as visible. */
3884 if (!get_column_visible(i))
3886 switch (col_item->col_fmt) {
3888 column_len = col_len = strlen(col_item->col_data);
3891 line_bufp = get_line_buf(buf_offset + column_len);
3892 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3898 case COL_ABS_YMD_TIME: /* XXX - wider */
3899 case COL_ABS_YDOY_TIME: /* XXX - wider */
3901 case COL_UTC_YMD_TIME: /* XXX - wider */
3902 case COL_UTC_YDOY_TIME: /* XXX - wider */
3903 column_len = col_len = strlen(col_item->col_data);
3904 if (column_len < 10)
3906 line_bufp = get_line_buf(buf_offset + column_len);
3907 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3913 case COL_DEF_DL_SRC:
3914 case COL_RES_DL_SRC:
3915 case COL_UNRES_DL_SRC:
3916 case COL_DEF_NET_SRC:
3917 case COL_RES_NET_SRC:
3918 case COL_UNRES_NET_SRC:
3919 column_len = col_len = strlen(col_item->col_data);
3920 if (column_len < 12)
3922 line_bufp = get_line_buf(buf_offset + column_len);
3923 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3929 case COL_DEF_DL_DST:
3930 case COL_RES_DL_DST:
3931 case COL_UNRES_DL_DST:
3932 case COL_DEF_NET_DST:
3933 case COL_RES_NET_DST:
3934 case COL_UNRES_NET_DST:
3935 column_len = col_len = strlen(col_item->col_data);
3936 if (column_len < 12)
3938 line_bufp = get_line_buf(buf_offset + column_len);
3939 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3943 column_len = strlen(col_item->col_data);
3944 line_bufp = get_line_buf(buf_offset + column_len);
3945 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3948 buf_offset += column_len;
3949 if (i != cf->cinfo.num_cols - 1) {
3951 * This isn't the last column, so we need to print a
3952 * separator between this column and the next.
3954 * If we printed a network source and are printing a
3955 * network destination of the same type next, separate
3956 * them with " -> "; if we printed a network destination
3957 * and are printing a network source of the same type
3958 * next, separate them with " <- "; otherwise separate them
3961 * We add enough space to the buffer for " <- " or " -> ",
3962 * even if we're only adding " ".
3964 line_bufp = get_line_buf(buf_offset + 4);
3965 switch (col_item->col_fmt) {
3970 switch (cf->cinfo.columns[i+1].col_fmt) {
3975 put_string(line_bufp + buf_offset, " -> ", 4);
3980 put_string(line_bufp + buf_offset, " ", 1);
3986 case COL_DEF_DL_SRC:
3987 case COL_RES_DL_SRC:
3988 case COL_UNRES_DL_SRC:
3989 switch (cf->cinfo.columns[i+1].col_fmt) {
3991 case COL_DEF_DL_DST:
3992 case COL_RES_DL_DST:
3993 case COL_UNRES_DL_DST:
3994 put_string(line_bufp + buf_offset, " -> ", 4);
3999 put_string(line_bufp + buf_offset, " ", 1);
4005 case COL_DEF_NET_SRC:
4006 case COL_RES_NET_SRC:
4007 case COL_UNRES_NET_SRC:
4008 switch (cf->cinfo.columns[i+1].col_fmt) {
4010 case COL_DEF_NET_DST:
4011 case COL_RES_NET_DST:
4012 case COL_UNRES_NET_DST:
4013 put_string(line_bufp + buf_offset, " -> ", 4);
4018 put_string(line_bufp + buf_offset, " ", 1);
4027 switch (cf->cinfo.columns[i+1].col_fmt) {
4032 put_string(line_bufp + buf_offset, " <- ", 4);
4037 put_string(line_bufp + buf_offset, " ", 1);
4043 case COL_DEF_DL_DST:
4044 case COL_RES_DL_DST:
4045 case COL_UNRES_DL_DST:
4046 switch (cf->cinfo.columns[i+1].col_fmt) {
4048 case COL_DEF_DL_SRC:
4049 case COL_RES_DL_SRC:
4050 case COL_UNRES_DL_SRC:
4051 put_string(line_bufp + buf_offset, " <- ", 4);
4056 put_string(line_bufp + buf_offset, " ", 1);
4062 case COL_DEF_NET_DST:
4063 case COL_RES_NET_DST:
4064 case COL_UNRES_NET_DST:
4065 switch (cf->cinfo.columns[i+1].col_fmt) {
4067 case COL_DEF_NET_SRC:
4068 case COL_RES_NET_SRC:
4069 case COL_UNRES_NET_SRC:
4070 put_string(line_bufp + buf_offset, " <- ", 4);
4075 put_string(line_bufp + buf_offset, " ", 1);
4082 put_string(line_bufp + buf_offset, " ", 1);
4088 return print_line(print_stream, 0, line_bufp);
4092 print_packet(capture_file *cf, epan_dissect_t *edt)
4094 print_args_t print_args;
4096 if (print_summary || output_fields_has_cols(output_fields)) {
4097 /* Just fill in the columns. */
4098 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
4100 if (print_summary) {
4101 /* Now print them. */
4102 switch (output_action) {
4105 if (!print_columns(cf))
4110 write_psml_columns(edt, stdout);
4111 return !ferror(stdout);
4112 case WRITE_FIELDS: /*No non-verbose "fields" format */
4113 g_assert_not_reached();
4118 if (print_details) {
4119 /* Print the information in the protocol tree. */
4120 switch (output_action) {
4123 /* Only initialize the fields that are actually used in proto_tree_print.
4124 * This is particularly important for .range, as that's heap memory which
4125 * we would otherwise have to g_free().
4126 print_args.to_file = TRUE;
4127 print_args.format = print_format;
4128 print_args.print_summary = print_summary;
4129 print_args.print_formfeed = FALSE;
4130 packet_range_init(&print_args.range, &cfile);
4132 print_args.print_hex = print_hex;
4133 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
4135 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
4138 if (!print_line(print_stream, 0, separator))
4144 write_pdml_proto_tree(edt, stdout);
4146 return !ferror(stdout);
4148 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
4150 return !ferror(stdout);
4154 if (print_summary || print_details) {
4155 if (!print_line(print_stream, 0, ""))
4158 if (!print_hex_data(print_stream, edt))
4160 if (!print_line(print_stream, 0, separator))
4169 switch (output_action) {
4172 return print_finale(print_stream);
4176 write_pdml_finale(stdout);
4178 write_psml_finale(stdout);
4179 return !ferror(stdout);
4182 write_fields_finale(output_fields, stdout);
4183 return !ferror(stdout);
4186 g_assert_not_reached();
4192 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4196 char err_msg[2048+1];
4198 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4202 /* The open succeeded. Fill in the information for this file. */
4204 /* Create new epan session for dissection. */
4205 epan_free(cf->epan);
4206 cf->epan = tshark_epan_new(cf);
4209 cf->f_datalen = 0; /* not used, but set it anyway */
4211 /* Set the file name because we need it to set the follow stream filter.
4212 XXX - is that still true? We need it for other reasons, though,
4214 cf->filename = g_strdup(fname);
4216 /* Indicate whether it's a permanent or temporary file. */
4217 cf->is_tempfile = is_tempfile;
4219 /* No user changes yet. */
4220 cf->unsaved_changes = FALSE;
4222 cf->cd_t = wtap_file_type_subtype(cf->wth);
4223 cf->open_type = type;
4225 cf->drops_known = FALSE;
4227 cf->snap = wtap_snapshot_length(cf->wth);
4228 if (cf->snap == 0) {
4229 /* Snapshot length not known. */
4230 cf->has_snap = FALSE;
4231 cf->snap = WTAP_MAX_PACKET_SIZE;
4233 cf->has_snap = TRUE;
4234 nstime_set_zero(&cf->elapsed_time);
4239 cf->state = FILE_READ_IN_PROGRESS;
4241 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4242 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4247 g_snprintf(err_msg, sizeof err_msg,
4248 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4249 cmdarg_err("%s", err_msg);
4254 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4256 char *save_file_string;
4258 save_file_string = output_file_description(fname);
4263 cmdarg_err("Not all the packets could be written to the %s because there is "
4264 "no space left on the file system.",
4270 cmdarg_err("Not all the packets could be written to the %s because you are "
4271 "too close to, or over your disk quota.",
4276 case WTAP_ERR_CANT_CLOSE:
4277 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4281 case WTAP_ERR_SHORT_WRITE:
4282 cmdarg_err("Not all the packets could be written to the %s.",
4288 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4289 wtap_strerror(err));
4291 cmdarg_err("An error occurred while writing to the %s: %s.",
4292 save_file_string, wtap_strerror(err));
4296 g_free(save_file_string);
4300 show_print_file_io_error(int err)
4305 cmdarg_err("Not all the packets could be printed because there is "
4306 "no space left on the file system.");
4311 cmdarg_err("Not all the packets could be printed because you are "
4312 "too close to, or over your disk quota.");
4317 cmdarg_err("An error occurred while printing packets: %s.",
4324 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4328 static char errmsg_errno[1024+1];
4331 /* Wiretap error. */
4334 case WTAP_ERR_NOT_REGULAR_FILE:
4335 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4338 case WTAP_ERR_RANDOM_OPEN_PIPE:
4339 /* Seen only when opening a capture file for reading. */
4340 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4343 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4344 /* Seen only when opening a capture file for reading. */
4345 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4348 case WTAP_ERR_UNSUPPORTED:
4349 /* Seen only when opening a capture file for reading. */
4350 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4351 "The file \"%%s\" contains record data that TShark doesn't support.\n"
4353 err_info != NULL ? err_info : "no information supplied");
4355 errmsg = errmsg_errno;
4358 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4359 /* Seen only when opening a capture file for writing. */
4360 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4361 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4362 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4363 errmsg = errmsg_errno;
4366 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
4367 /* Seen only when opening a capture file for writing. */
4368 errmsg = "TShark doesn't support writing capture files in that format.";
4371 case WTAP_ERR_UNWRITABLE_ENCAP:
4372 /* Seen only when opening a capture file for writing. */
4373 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4374 "TShark can't save this capture as a \"%s\" file.",
4375 wtap_file_type_subtype_short_string(file_type));
4376 errmsg = errmsg_errno;
4379 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4381 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4382 "TShark can't save this capture as a \"%s\" file.",
4383 wtap_file_type_subtype_short_string(file_type));
4384 errmsg = errmsg_errno;
4386 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4389 case WTAP_ERR_BAD_FILE:
4390 /* Seen only when opening a capture file for reading. */
4391 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4392 "The file \"%%s\" appears to be damaged or corrupt.\n"
4394 err_info != NULL ? err_info : "no information supplied");
4396 errmsg = errmsg_errno;
4399 case WTAP_ERR_CANT_OPEN:
4401 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4403 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4406 case WTAP_ERR_SHORT_READ:
4407 errmsg = "The file \"%s\" appears to have been cut short"
4408 " in the middle of a packet or other data.";
4411 case WTAP_ERR_SHORT_WRITE:
4412 errmsg = "A full header couldn't be written to the file \"%s\".";
4415 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4416 errmsg = "This file type cannot be written as a compressed file.";
4419 case WTAP_ERR_DECOMPRESS:
4420 /* Seen only when opening a capture file for reading. */
4421 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4422 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4424 err_info != NULL ? err_info : "no information supplied");
4426 errmsg = errmsg_errno;
4430 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4431 "The file \"%%s\" could not be %s: %s.",
4432 for_writing ? "created" : "opened",
4433 wtap_strerror(err));
4434 errmsg = errmsg_errno;
4438 errmsg = file_open_error_message(err, for_writing);
4443 * Open/create errors are reported with an console message in TShark.
4446 open_failure_message(const char *filename, int err, gboolean for_writing)
4448 fprintf(stderr, "tshark: ");
4449 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4450 fprintf(stderr, "\n");
4454 * General errors are reported with an console message in TShark.
4457 failure_message(const char *msg_format, va_list ap)
4459 fprintf(stderr, "tshark: ");
4460 vfprintf(stderr, msg_format, ap);
4461 fprintf(stderr, "\n");
4465 * Read errors are reported with an console message in TShark.
4468 read_failure_message(const char *filename, int err)
4470 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4471 filename, g_strerror(err));
4475 * Write errors are reported with an console message in TShark.
4478 write_failure_message(const char *filename, int err)
4480 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4481 filename, g_strerror(err));
4485 * Report additional information for an error in command-line arguments.
4488 failure_message_cont(const char *msg_format, va_list ap)
4490 vfprintf(stderr, msg_format, ap);
4491 fprintf(stderr, "\n");
4495 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4500 * indent-tabs-mode: nil
4503 * vi: set shiftwidth=2 tabstop=8 expandtab:
4504 * :indentSize=2:tabSize=8:noTabs=true: