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>.
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
52 #ifdef HAVE_SYS_STAT_H
53 # include <sys/stat.h>
57 #include "wsutil/wsgetopt.h"
62 #include <epan/exceptions.h>
63 #include <epan/epan-int.h>
64 #include <epan/epan.h>
65 #include <wsutil/crash_info.h>
66 #include <wsutil/privileges.h>
67 #include <wsutil/file_util.h>
68 #include <wsutil/filesystem.h>
69 #include <wsutil/report_err.h>
72 #include <epan/timestamp.h>
73 #include <epan/packet.h>
75 #include <epan/wslua/init_wslua.h>
78 #include "frame_tvbuff.h"
79 #include <epan/disabled_protos.h>
80 #include <epan/prefs.h>
81 #include <epan/column.h>
82 #include <epan/print.h>
83 #include <epan/addr_resolv.h>
85 #include "ui/ui_util.h"
86 #include "clopts_common.h"
87 #include "cmdarg_err.h"
88 #include "version_info.h"
90 #include <epan/epan_dissect.h>
92 #include <epan/stat_cmd_args.h>
93 #include <epan/timestamp.h>
94 #include <epan/ex-opt.h>
96 #include "capture_opts.h"
99 #include "capture_ui_utils.h"
100 #include "capture_ifinfo.h"
101 #include "capture-pcap-util.h"
103 #include "capture-wpcap.h"
104 #include <wsutil/unicode-utils.h>
106 #include "capture_session.h"
107 #include "capture_sync.h"
108 #include "capture_opts.h"
109 #endif /* HAVE_LIBPCAP */
111 #include <epan/funnel.h>
114 #include <wsutil/plugins.h>
118 * This is the template for the decode as option; it is shared between the
119 * various functions that output the usage for this parameter.
121 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
123 static guint32 cum_bytes;
124 static const frame_data *ref;
125 static frame_data ref_frame;
126 static frame_data *prev_dis;
127 static frame_data prev_dis_frame;
128 static frame_data *prev_cap;
129 static frame_data prev_cap_frame;
131 static const char* prev_display_dissector_name = NULL;
133 static gboolean perform_two_pass_analysis;
136 * The way the packet decode is to be written.
139 WRITE_TEXT, /* summary or detail text */
140 WRITE_XML, /* PDML or PSML */
141 WRITE_FIELDS /* User defined list of fields */
142 /* Add CSV and the like here */
145 static output_action_e output_action;
146 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
147 static gboolean print_packet_info; /* TRUE if we're to print packet information */
148 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
149 static gboolean print_details; /* TRUE if we're to print packet details information */
150 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
151 static gboolean line_buffered;
152 static gboolean really_quiet = FALSE;
154 static print_format_e print_format = PR_FMT_TEXT;
155 static print_stream_t *print_stream;
157 static output_fields_t* output_fields = NULL;
159 /* The line separator used between packets, changeable via the -S option */
160 static const char *separator = "";
164 * TRUE if we're to print packet counts to keep track of captured packets.
166 static gboolean print_packet_counts;
168 static capture_options global_capture_opts;
169 static capture_session global_capture_session;
172 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
173 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
176 static gboolean capture(void);
177 static void report_counts(void);
179 static BOOL WINAPI capture_cleanup(DWORD);
181 static void capture_cleanup(int);
183 static void report_counts_siginfo(int);
186 #endif /* HAVE_LIBPCAP */
188 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
189 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
190 struct wtap_pkthdr *whdr, const guchar *pd,
192 static void show_capture_file_io_error(const char *, int, gboolean);
193 static void show_print_file_io_error(int err);
194 static gboolean write_preamble(capture_file *cf);
195 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
196 static gboolean write_finale(void);
197 static const char *cf_open_error_message(int err, gchar *err_info,
198 gboolean for_writing, int file_type);
200 static void open_failure_message(const char *filename, int err,
201 gboolean for_writing);
202 static void failure_message(const char *msg_format, va_list ap);
203 static void read_failure_message(const char *filename, int err);
204 static void write_failure_message(const char *filename, int err);
209 const char *sstr; /* The short string */
210 const char *lstr; /* The long string */
214 string_compare(gconstpointer a, gconstpointer b)
216 return strcmp(((const struct string_elem *)a)->sstr,
217 ((const struct string_elem *)b)->sstr);
221 string_elem_print(gpointer data, gpointer not_used _U_)
223 fprintf(stderr, " %s - %s\n",
224 ((struct string_elem *)data)->sstr,
225 ((struct string_elem *)data)->lstr);
229 list_capture_types(void) {
231 struct string_elem *captypes;
234 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
236 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
237 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
238 if (wtap_dump_can_open(i)) {
239 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
240 captypes[i].lstr = wtap_file_type_subtype_string(i);
241 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
244 g_slist_foreach(list, string_elem_print, NULL);
250 print_usage(gboolean print_ver)
257 "TShark " VERSION "%s\n"
258 "Dump and analyze network traffic.\n"
259 "See http://www.wireshark.org for more information.\n"
262 wireshark_gitversion, get_copyright_info());
266 fprintf(output, "\n");
267 fprintf(output, "Usage: tshark [options] ...\n");
268 fprintf(output, "\n");
271 fprintf(output, "Capture interface:\n");
272 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
273 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
274 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
275 fprintf(output, " -p don't capture in promiscuous mode\n");
276 #ifdef HAVE_PCAP_CREATE
277 fprintf(output, " -I capture in monitor mode, if available\n");
279 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
280 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
282 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
283 fprintf(output, " -D print list of interfaces and exit\n");
284 fprintf(output, " -L print list of link-layer types of iface and exit\n");
285 fprintf(output, "\n");
286 fprintf(output, "Capture stop conditions:\n");
287 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
288 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
289 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
290 fprintf(output, " files:NUM - stop after NUM files\n");
291 /*fprintf(output, "\n");*/
292 fprintf(output, "Capture output:\n");
293 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
294 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
295 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
296 #endif /* HAVE_LIBPCAP */
297 #ifdef HAVE_PCAP_REMOTE
298 fprintf(output, "RPCAP options:\n");
299 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
301 /*fprintf(output, "\n");*/
302 fprintf(output, "Input file:\n");
303 fprintf(output, " -r <infile> set the filename to read from (no stdin!)\n");
305 fprintf(output, "\n");
306 fprintf(output, "Processing:\n");
307 fprintf(output, " -2 perform a two-pass analysis\n");
308 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
309 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
310 fprintf(output, " syntax\n");
311 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
312 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
313 fprintf(output, " -d %s ...\n", decode_as_arg_template);
314 fprintf(output, " \"Decode As\", see the man page for details\n");
315 fprintf(output, " Example: tcp.port==8888,http\n");
316 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
317 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
319 /*fprintf(output, "\n");*/
320 fprintf(output, "Output:\n");
321 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
322 fprintf(output, " (or to the standard output for \"-\")\n");
323 fprintf(output, " -C <config profile> start with specified configuration profile\n");
324 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
325 fprintf(output, " an empty \"-F\" option will list the file types\n");
326 fprintf(output, " -V add output of packet tree (Packet Details)\n");
327 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
328 fprintf(output, " separated\n");
329 fprintf(output, " -P print packet summary even when writing to a file\n");
330 fprintf(output, " -S <separator> the line separator to print between packets\n");
331 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
332 fprintf(output, " -T pdml|ps|psml|text|fields\n");
333 fprintf(output, " format of text output (def: text)\n");
334 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
335 fprintf(output, " _ws.col.Info)\n");
336 fprintf(output, " this option can be repeated to print multiple fields\n");
337 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
338 fprintf(output, " header=y|n switch headers on and off\n");
339 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
340 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
341 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
342 fprintf(output, " aggregator\n");
343 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
344 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
345 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
346 fprintf(output, " -l flush standard output after each packet\n");
347 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
348 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
349 fprintf(output, " -g enable group read access on the output file(s)\n");
350 fprintf(output, " -W n Save extra information in the file, if supported.\n");
351 fprintf(output, " n = write network address resolution information\n");
352 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
353 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
354 fprintf(output, " --capture-comment <comment>\n");
355 fprintf(output, " add a capture comment to the newly created\n");
356 fprintf(output, " output file (only for pcapng)\n");
358 fprintf(output, "\n");
359 fprintf(output, "Miscellaneous:\n");
360 fprintf(output, " -h display this help and exit\n");
361 fprintf(output, " -v display version info and exit\n");
362 fprintf(output, " -o <name>:<value> ... override preference setting\n");
363 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
364 fprintf(output, " -G [report] dump one of several available reports and exit\n");
365 fprintf(output, " default report=\"fields\"\n");
366 fprintf(output, " use \"-G ?\" for more help\n");
368 fprintf(output, "\n");
369 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
370 fprintf(output, "You might want to reset it\n");
371 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
372 fprintf(output, "\n");
378 glossary_option_help(void)
384 fprintf(output, "TShark " VERSION "%s\n", wireshark_gitversion);
386 fprintf(output, "\n");
387 fprintf(output, "Usage: tshark -G [report]\n");
388 fprintf(output, "\n");
389 fprintf(output, "Glossary table reports:\n");
390 fprintf(output, " -G column-formats dump column format codes and exit\n");
391 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
392 fprintf(output, " -G fields dump fields glossary and exit\n");
393 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
394 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
395 fprintf(output, " -G plugins dump installed plugins and exit\n");
396 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
397 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
398 fprintf(output, "\n");
399 fprintf(output, "Preference reports:\n");
400 fprintf(output, " -G currentprefs dump current preferences and exit\n");
401 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
402 fprintf(output, "\n");
406 * For a dissector table, print on the stream described by output,
407 * its short name (which is what's used in the "-d" option) and its
411 display_dissector_table_names(const char *table_name, const char *ui_name,
414 if ((prev_display_dissector_name == NULL) ||
415 (strcmp(prev_display_dissector_name, table_name) != 0)) {
416 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
417 prev_display_dissector_name = table_name;
422 * For a dissector handle, print on the stream described by output,
423 * the filter name (which is what's used in the "-d" option) and the full
424 * name for the protocol that corresponds to this handle.
427 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
430 const gchar *proto_filter_name;
431 const gchar *proto_ui_name;
433 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
435 if (proto_id != -1) {
436 proto_filter_name = proto_get_protocol_filter_name(proto_id);
437 proto_ui_name = proto_get_protocol_name(proto_id);
438 g_assert(proto_filter_name != NULL);
439 g_assert(proto_ui_name != NULL);
441 if ((prev_display_dissector_name == NULL) ||
442 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
443 fprintf((FILE *)output, "\t%s (%s)\n",
446 prev_display_dissector_name = proto_filter_name;
452 * The protocol_name_search structure is used by find_protocol_name_func()
453 * to pass parameters and store results
455 struct protocol_name_search{
456 gchar *searched_name; /* Protocol filter name we are looking for */
457 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
458 guint nb_match; /* How many dissectors matched searched_name */
460 typedef struct protocol_name_search *protocol_name_search_t;
463 * This function parses all dissectors associated with a table to find the
464 * one whose protocol has the specified filter name. It is called
465 * as a reference function in a call to dissector_table_foreach_handle.
466 * The name we are looking for, as well as the results, are stored in the
467 * protocol_name_search struct pointed to by user_data.
468 * If called using dissector_table_foreach_handle, we actually parse the
469 * whole list of dissectors.
472 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
476 const gchar *protocol_filter_name;
477 protocol_name_search_t search_info;
481 search_info = (protocol_name_search_t)user_data;
483 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
484 if (proto_id != -1) {
485 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
486 g_assert(protocol_filter_name != NULL);
487 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
489 if (search_info->nb_match == 0) {
490 /* Record this handle only if this is the first match */
491 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
493 search_info->nb_match++;
499 * Allow dissector key names to be sorted alphabetically
503 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
505 return strcmp((const char*)dissector_a, (const char*)dissector_b);
509 * Print all layer type names supported.
510 * We send the output to the stream described by the handle output.
514 fprint_all_layer_types(FILE *output)
517 prev_display_dissector_name = NULL;
518 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
522 * Print all protocol names supported for a specific layer type.
523 * table_name contains the layer type name in which the search is performed.
524 * We send the output to the stream described by the handle output.
528 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
531 prev_display_dissector_name = NULL;
532 dissector_table_foreach_handle(table_name,
533 display_dissector_names,
538 * The function below parses the command-line parameters for the decode as
539 * feature (a string pointer by cl_param).
540 * It checks the format of the command-line, searches for a matching table
541 * and dissector. If a table/dissector match is not found, we display a
542 * summary of the available tables/dissectors (on stderr) and return FALSE.
543 * If everything is fine, we get the "Decode as" preference activated,
544 * then we return TRUE.
547 add_decode_as(const gchar *cl_param)
550 guint32 selector, selector2;
551 gchar *decoded_param;
552 gchar *remaining_param;
554 gchar *dissector_str;
555 dissector_handle_t dissector_matching;
556 dissector_table_t table_matching;
557 ftenum_t dissector_table_selector_type;
558 struct protocol_name_search user_protocol_name;
562 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
565 decoded_param = g_strdup(cl_param);
566 g_assert(decoded_param);
569 /* The lines below will parse this string (modifying it) to extract all
570 necessary information. Note that decoded_param is still needed since
571 strings are not copied - we just save pointers. */
573 /* This section extracts a layer type (table_name) from decoded_param */
574 table_name = decoded_param; /* Layer type string starts from beginning */
576 remaining_param = strchr(table_name, '=');
577 if (remaining_param == NULL) {
578 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
579 /* If the argument does not follow the template, carry on anyway to check
580 if the table name is at least correct. If remaining_param is NULL,
581 we'll exit anyway further down */
584 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
587 /* Remove leading and trailing spaces from the table name */
588 while ( table_name[0] == ' ' )
590 while ( table_name[strlen(table_name) - 1] == ' ' )
591 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
593 /* The following part searches a table matching with the layer type specified */
594 table_matching = NULL;
596 /* Look for the requested table */
597 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
598 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
601 table_matching = find_dissector_table(table_name);
602 if (!table_matching) {
603 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
607 if (!table_matching) {
608 /* Display a list of supported layer types to help the user, if the
609 specified layer type was not found */
610 cmdarg_err("Valid layer types are:");
611 fprint_all_layer_types(stderr);
613 if (remaining_param == NULL || !table_matching) {
614 /* Exit if the layer type was not found, or if no '=' separator was found
616 g_free(decoded_param);
620 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
621 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
624 remaining_param++; /* Move to the second '=' */
625 *remaining_param = '\0'; /* Remove the second '=' */
627 remaining_param++; /* Position after the layer type string */
629 /* This section extracts a selector value (selector_str) from decoded_param */
631 selector_str = remaining_param; /* Next part starts with the selector number */
633 remaining_param = strchr(selector_str, ',');
634 if (remaining_param == NULL) {
635 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
636 /* If the argument does not follow the template, carry on anyway to check
637 if the selector value is at least correct. If remaining_param is NULL,
638 we'll exit anyway further down */
641 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
644 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
646 switch (dissector_table_selector_type) {
652 /* The selector for this table is an unsigned number. Parse it as such.
653 There's no need to remove leading and trailing spaces from the
654 selector number string, because sscanf will do that for us. */
655 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
660 if (op != ':' && op != '-') {
661 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
662 g_free(decoded_param);
666 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
667 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
668 g_free(decoded_param);
672 else if (selector2 < selector) {
673 /* We could swap them for the user, but maybe it's better to call
674 * this out as an error in case it's not what was intended? */
675 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
676 g_free(decoded_param);
681 cmdarg_err("Invalid selector number \"%s\"", selector_str);
682 g_free(decoded_param);
689 /* The selector for this table is a string. */
693 /* There are currently no dissector tables with any types other
694 than the ones listed above. */
695 g_assert_not_reached();
698 if (remaining_param == NULL) {
699 /* Exit if no ',' separator was found (see above) */
700 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
701 fprint_all_protocols_for_layer_types(stderr, table_name);
702 g_free(decoded_param);
706 remaining_param++; /* Position after the selector number string */
708 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
710 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
712 /* Remove leading and trailing spaces from the dissector name */
713 while ( dissector_str[0] == ' ' )
715 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
716 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
718 dissector_matching = NULL;
720 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
721 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 */
722 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
725 user_protocol_name.nb_match = 0;
726 user_protocol_name.searched_name = dissector_str;
727 user_protocol_name.matched_handle = NULL;
729 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 */
731 if (user_protocol_name.nb_match != 0) {
732 dissector_matching = user_protocol_name.matched_handle;
733 if (user_protocol_name.nb_match > 1) {
734 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
738 /* OK, check whether the problem is that there isn't any such
739 protocol, or that there is but it's not specified as a protocol
740 that's valid for that dissector table.
741 Note, we don't exit here, but dissector_matching will remain NULL,
743 if (proto_get_id_by_filter_name(dissector_str) == -1) {
744 /* No such protocol */
745 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
747 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
748 dissector_str, table_name);
753 if (!dissector_matching) {
754 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
755 fprint_all_protocols_for_layer_types(stderr, table_name);
756 g_free(decoded_param);
760 /* This is the end of the code that parses the command-line options.
761 All information is now stored in the variables:
765 The above variables that are strings are still pointing to areas within
766 decoded_parm. decoded_parm thus still needs to be kept allocated in
767 until we stop needing these variables
768 decoded_param will be deallocated at each exit point of this function */
771 /* We now have a pointer to the handle for the requested dissector
772 (requested protocol) inside the variable dissector_matching */
773 switch (dissector_table_selector_type) {
779 /* The selector for this table is an unsigned number. */
781 dissector_change_uint(table_name, selector, dissector_matching);
782 } else if (op == ':') {
783 for (i = selector; i < (guint64)selector + selector2; i++) {
784 dissector_change_uint(table_name, (guint32)i, dissector_matching);
786 } else { /* op == '-' */
787 for (i = selector; i <= selector2; i++) {
788 dissector_change_uint(table_name, (guint32)i, dissector_matching);
795 /* The selector for this table is a string. */
796 dissector_change_string(table_name, selector_str, dissector_matching);
800 /* There are currently no dissector tables with any types other
801 than the ones listed above. */
802 g_assert_not_reached();
804 g_free(decoded_param); /* "Decode As" rule has been successfully added */
809 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
810 const gchar *message, gpointer user_data)
812 /* ignore log message, if log_level isn't interesting based
813 upon the console log preferences.
814 If the preferences haven't been loaded loaded yet, display the
817 The default console_log_level preference value is such that only
818 ERROR, CRITICAL and WARNING level messages are processed;
819 MESSAGE, INFO and DEBUG level messages are ignored.
821 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
822 ERROR and CRITICAL level messages so the current code is a behavioral
823 change. The current behavior is the same as in Wireshark.
825 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
826 prefs.console_log_level != 0) {
830 g_log_default_handler(log_domain, log_level, message, user_data);
835 output_file_description(const char *fname)
837 char *save_file_string;
839 /* Get a string that describes what we're writing to */
840 if (strcmp(fname, "-") == 0) {
841 /* We're writing to the standard output */
842 save_file_string = g_strdup("standard output");
844 /* We're writing to a file with the name in save_file */
845 save_file_string = g_strdup_printf("file \"%s\"", fname);
847 return save_file_string;
851 print_current_user(void) {
852 gchar *cur_user, *cur_group;
854 if (started_with_special_privs()) {
855 cur_user = get_cur_username();
856 cur_group = get_cur_groupname();
857 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
858 cur_user, cur_group);
861 if (running_with_special_privs()) {
862 fprintf(stderr, " This could be dangerous.");
864 fprintf(stderr, "\n");
869 check_capture_privs(void) {
872 /* Warn the user if npf.sys isn't loaded. */
873 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
874 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
875 "capturing or\nlisting interfaces.\n");
881 show_version(GString *comp_info_str, GString *runtime_info_str)
883 printf("TShark " VERSION "%s\n"
890 wireshark_gitversion, get_copyright_info(), comp_info_str->str,
891 runtime_info_str->str);
895 main(int argc, char *argv[])
897 GString *comp_info_str;
898 GString *runtime_info_str;
899 char *init_progfile_dir_error;
901 struct option long_options[] = {
902 {(char *)"capture-comment", required_argument, NULL, LONGOPT_NUM_CAP_COMMENT },
905 gboolean arg_error = FALSE;
911 char *gpf_path, *pf_path;
912 char *gdp_path, *dp_path;
913 int gpf_open_errno, gpf_read_errno;
914 int pf_open_errno, pf_read_errno;
915 int gdp_open_errno, gdp_read_errno;
916 int dp_open_errno, dp_read_errno;
918 volatile int exit_status = 0;
920 gboolean list_link_layer_types = FALSE;
921 gboolean start_capture = FALSE;
926 gboolean capture_option_specified = FALSE;
928 gboolean quiet = FALSE;
929 #ifdef PCAP_NG_DEFAULT
930 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
932 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
934 volatile gboolean out_file_name_res = FALSE;
935 gchar *volatile cf_name = NULL;
936 gchar *rfilter = NULL;
937 gchar *dfilter = NULL;
938 #ifdef HAVE_PCAP_OPEN_DEAD
939 struct bpf_program fcode;
941 dfilter_t *rfcode = NULL;
942 dfilter_t *dfcode = NULL;
947 gchar *output_only = NULL;
949 #ifdef HAVE_PCAP_REMOTE
950 #define OPTSTRING_A "A:"
952 #define OPTSTRING_A ""
955 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
956 #define OPTSTRING_B "B:"
958 #define OPTSTRING_B ""
959 #endif /* _WIN32 or HAVE_PCAP_CREATE */
960 #else /* HAVE_LIBPCAP */
961 #define OPTSTRING_B ""
962 #endif /* HAVE_LIBPCAP */
964 #ifdef HAVE_PCAP_CREATE
965 #define OPTSTRING_I "I"
967 #define OPTSTRING_I ""
970 /* the leading - ensures that getopt() does not permute the argv[] entries
971 we have to make sure that the first getopt() preserves the content of argv[]
972 for the subsequent getopt_long() call */
973 #define OPTSTRING "-2a:" OPTSTRING_A "b:" OPTSTRING_B "c:C:d:De:E:f:F:gG:hH:i:" OPTSTRING_I "K:lLnN:o:O:pPqQr:R:s:S:t:T:u:vVw:W:xX:y:Y:z:"
975 static const char optstring[] = OPTSTRING;
977 /* Assemble the compile-time version information string */
978 comp_info_str = g_string_new("Compiled ");
979 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
981 /* Assemble the run-time version information string */
982 runtime_info_str = g_string_new("Running ");
983 get_runtime_version_info(runtime_info_str, NULL);
985 /* Add it to the information to be reported on a crash. */
986 ws_add_crash_info("TShark " VERSION "%s\n"
991 wireshark_gitversion, comp_info_str->str, runtime_info_str->str);
994 arg_list_utf_16to8(argc, argv);
995 create_app_running_mutex();
996 #if !GLIB_CHECK_VERSION(2,31,0)
1002 * Get credential information for later use.
1004 init_process_policies();
1007 * Attempt to get the pathname of the executable file.
1009 init_progfile_dir_error = init_progfile_dir(argv[0], main);
1010 if (init_progfile_dir_error != NULL) {
1011 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1012 init_progfile_dir_error);
1016 * In order to have the -X opts assigned before the wslua machine starts
1017 * we need to call getopts before epan_init() gets called.
1020 optind_initial = optind;
1022 while ((opt = getopt(argc, argv, optstring)) != -1) {
1024 case 'C': /* Configuration Profile */
1025 if (profile_exists (optarg, FALSE)) {
1026 set_profile_name (optarg);
1028 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1032 case 'P': /* Print packet summary info even when writing to a file */
1033 print_packet_info = TRUE;
1034 print_summary = TRUE;
1036 case 'O': /* Only output these protocols */
1037 output_only = g_strdup(optarg);
1039 case 'V': /* Verbose */
1040 print_details = TRUE;
1041 print_packet_info = TRUE;
1043 case 'x': /* Print packet data in hex (and ASCII) */
1045 /* The user asked for hex output, so let's ensure they get it,
1046 * even if they're writing to a file.
1048 print_packet_info = TRUE;
1059 * Print packet summary information is the default, unless either -V or -x
1060 * were specified and -P was not. Note that this is new behavior, which
1061 * allows for the possibility of printing only hex/ascii output without
1062 * necessarily requiring that either the summary or details be printed too.
1064 if (print_summary == -1)
1065 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1067 optind = optind_initial;
1072 /** Send All g_log messages to our own handler **/
1076 G_LOG_LEVEL_CRITICAL|
1077 G_LOG_LEVEL_WARNING|
1078 G_LOG_LEVEL_MESSAGE|
1081 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1083 g_log_set_handler(NULL,
1084 (GLogLevelFlags)log_flags,
1085 tshark_log_handler, NULL /* user_data */);
1086 g_log_set_handler(LOG_DOMAIN_MAIN,
1087 (GLogLevelFlags)log_flags,
1088 tshark_log_handler, NULL /* user_data */);
1091 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1092 (GLogLevelFlags)log_flags,
1093 tshark_log_handler, NULL /* user_data */);
1094 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1095 (GLogLevelFlags)log_flags,
1096 tshark_log_handler, NULL /* user_data */);
1099 initialize_funnel_ops();
1101 init_report_err(failure_message, open_failure_message, read_failure_message,
1102 write_failure_message);
1105 capture_opts_init(&global_capture_opts);
1106 capture_session_init(&global_capture_session, (void *)&cfile);
1109 timestamp_set_type(TS_RELATIVE);
1110 timestamp_set_precision(TS_PREC_AUTO);
1111 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1114 /* Register all the plugin types we have. */
1115 epan_register_plugin_types(); /* Types known to libwireshark */
1116 wtap_register_plugin_types(); /* Types known to libwiretap */
1118 /* Scan for plugins. This does *not* call their registration routines;
1119 that's done later. */
1122 /* Register all libwiretap plugin modules. */
1123 register_all_wiretap_modules();
1126 /* Register all dissectors; we must do this before checking for the
1127 "-G" flag, as the "-G" flag dumps information registered by the
1128 dissectors, and we must do it before we read the preferences, in
1129 case any dissectors register preferences. */
1130 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1132 /* Register all tap listeners; we do this before we parse the arguments,
1133 as the "-z" argument can specify a registered tap. */
1135 /* we register the plugin taps before the other taps because
1136 stats_tree taps plugins will be registered as tap listeners
1137 by stats_tree_stat.c and need to registered before that */
1139 register_all_plugin_tap_listeners();
1141 register_all_tap_listeners();
1143 /* If invoked with the "-G" flag, we dump out information based on
1144 the argument to the "-G" flag; if no argument is specified,
1145 for backwards compatibility we dump out a glossary of display
1148 XXX - we do this here, for now, to support "-G" with no arguments.
1149 If none of our build or other processes uses "-G" with no arguments,
1150 we can just process it with the other arguments. */
1151 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1152 proto_initialize_all_prefixes();
1155 proto_registrar_dump_fields();
1157 if (strcmp(argv[2], "column-formats") == 0)
1158 column_dump_column_formats();
1159 else if (strcmp(argv[2], "currentprefs") == 0) {
1160 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1161 &pf_open_errno, &pf_read_errno, &pf_path);
1164 else if (strcmp(argv[2], "decodes") == 0)
1165 dissector_dump_decodes();
1166 else if (strcmp(argv[2], "defaultprefs") == 0)
1168 else if (strcmp(argv[2], "fields") == 0)
1169 proto_registrar_dump_fields();
1170 else if (strcmp(argv[2], "ftypes") == 0)
1171 proto_registrar_dump_ftypes();
1172 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1173 dissector_dump_heur_decodes();
1174 else if (strcmp(argv[2], "plugins") == 0) {
1179 wslua_plugins_dump_all();
1182 else if (strcmp(argv[2], "protocols") == 0)
1183 proto_registrar_dump_protocols();
1184 else if (strcmp(argv[2], "values") == 0)
1185 proto_registrar_dump_values();
1186 else if (strcmp(argv[2], "?") == 0)
1187 glossary_option_help();
1188 else if (strcmp(argv[2], "-?") == 0)
1189 glossary_option_help();
1191 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1198 /* Set the C-language locale to the native environment. */
1199 setlocale(LC_ALL, "");
1201 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1202 &pf_open_errno, &pf_read_errno, &pf_path);
1203 if (gpf_path != NULL) {
1204 if (gpf_open_errno != 0) {
1205 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1206 pf_path, g_strerror(gpf_open_errno));
1208 if (gpf_read_errno != 0) {
1209 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1210 pf_path, g_strerror(gpf_read_errno));
1213 if (pf_path != NULL) {
1214 if (pf_open_errno != 0) {
1215 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1216 g_strerror(pf_open_errno));
1218 if (pf_read_errno != 0) {
1219 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1220 pf_path, g_strerror(pf_read_errno));
1226 /* Read the disabled protocols file. */
1227 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1228 &dp_path, &dp_open_errno, &dp_read_errno);
1229 if (gdp_path != NULL) {
1230 if (gdp_open_errno != 0) {
1231 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1232 gdp_path, g_strerror(gdp_open_errno));
1234 if (gdp_read_errno != 0) {
1235 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1236 gdp_path, g_strerror(gdp_read_errno));
1240 if (dp_path != NULL) {
1241 if (dp_open_errno != 0) {
1243 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1244 g_strerror(dp_open_errno));
1246 if (dp_read_errno != 0) {
1248 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1249 g_strerror(dp_read_errno));
1254 check_capture_privs();
1256 cap_file_init(&cfile);
1258 /* Print format defaults to this. */
1259 print_format = PR_FMT_TEXT;
1261 output_fields = output_fields_new();
1263 /* Now get our args */
1264 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1266 case '2': /* Perform two pass analysis */
1267 perform_two_pass_analysis = TRUE;
1269 case 'a': /* autostop criteria */
1270 case 'b': /* Ringbuffer option */
1271 case 'c': /* Capture x packets */
1272 case 'f': /* capture filter */
1273 case 'g': /* enable group read access on file(s) */
1274 case 'i': /* Use interface x */
1275 case 'p': /* Don't capture in promiscuous mode */
1276 #ifdef HAVE_PCAP_REMOTE
1277 case 'A': /* Authentication */
1279 #ifdef HAVE_PCAP_CREATE
1280 case 'I': /* Capture in monitor mode, if available */
1282 case 's': /* Set the snapshot (capture) length */
1283 case 'w': /* Write to capture file x */
1284 case 'y': /* Set the pcap data link type */
1285 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1286 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1287 case 'B': /* Buffer size */
1288 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1290 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1295 capture_option_specified = TRUE;
1300 /* Configuration profile settings were already processed just ignore them this time*/
1302 case 'd': /* Decode as rule */
1303 if (!add_decode_as(optarg))
1306 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1307 case 'K': /* Kerberos keytab file */
1308 read_keytab_file(optarg);
1311 case 'D': /* Print a list of capture devices and exit */
1313 if_list = capture_interface_list(&err, &err_str,NULL);
1314 if (if_list == NULL) {
1316 case CANT_GET_INTERFACE_LIST:
1317 case DONT_HAVE_PCAP:
1318 cmdarg_err("%s", err_str);
1322 case NO_INTERFACES_FOUND:
1323 cmdarg_err("There are no interfaces on which a capture can be done");
1328 capture_opts_print_interfaces(if_list);
1329 free_interface_list(if_list);
1332 capture_option_specified = TRUE;
1338 output_fields_add(output_fields, optarg);
1342 if (!output_fields_set_option(output_fields, optarg)) {
1343 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1344 output_fields_list_options(stderr);
1349 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1350 if (out_file_type < 0) {
1351 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1352 list_capture_types();
1356 case 'W': /* Select extra information to save in our capture file */
1357 /* This is patterned after the -N flag which may not be the best idea. */
1358 if (strchr(optarg, 'n')) {
1359 out_file_name_res = TRUE;
1361 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1362 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1366 case 'H': /* Read address to name mappings from a hosts file */
1367 if (! add_hosts_file(optarg))
1369 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1372 out_file_name_res = TRUE;
1375 case 'h': /* Print help and exit */
1379 case 'l': /* "Line-buffer" standard output */
1380 /* This isn't line-buffering, strictly speaking, it's just
1381 flushing the standard output after the information for
1382 each packet is printed; however, that should be good
1383 enough for all the purposes to which "-l" is put (and
1384 is probably actually better for "-V", as it does fewer
1387 See the comment in "process_packet()" for an explanation of
1388 why we do that, and why we don't just use "setvbuf()" to
1389 make the standard output line-buffered (short version: in
1390 Windows, "line-buffered" is the same as "fully-buffered",
1391 and the output buffer is only flushed when it fills up). */
1392 line_buffered = TRUE;
1394 case 'L': /* Print list of link-layer types and exit */
1396 list_link_layer_types = TRUE;
1398 capture_option_specified = TRUE;
1402 case 'n': /* No name resolution */
1403 gbl_resolv_flags.mac_name = FALSE;
1404 gbl_resolv_flags.network_name = FALSE;
1405 gbl_resolv_flags.transport_name = FALSE;
1406 gbl_resolv_flags.concurrent_dns = FALSE;
1408 case 'N': /* Select what types of addresses/port #s to resolve */
1409 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1410 if (badopt != '\0') {
1411 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1413 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1414 "\t'm' to enable MAC address resolution\n"
1415 "\t'n' to enable network address resolution\n"
1416 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1417 "\t for network address resolution\n"
1418 "\t't' to enable transport-layer port number resolution");
1422 case 'o': /* Override preference from command line */
1423 switch (prefs_set_pref(optarg)) {
1428 case PREFS_SET_SYNTAX_ERR:
1429 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1433 case PREFS_SET_NO_SUCH_PREF:
1434 case PREFS_SET_OBSOLETE:
1435 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1440 case 'q': /* Quiet */
1443 case 'Q': /* Really quiet */
1445 really_quiet = TRUE;
1447 case 'r': /* Read capture file x */
1448 cf_name = g_strdup(optarg);
1450 case 'R': /* Read file filter */
1454 /* already processed; just ignore it now */
1456 case 'S': /* Set the line Separator to be printed between packets */
1457 separator = strdup(optarg);
1459 case 't': /* Time stamp type */
1460 if (strcmp(optarg, "r") == 0)
1461 timestamp_set_type(TS_RELATIVE);
1462 else if (strcmp(optarg, "a") == 0)
1463 timestamp_set_type(TS_ABSOLUTE);
1464 else if (strcmp(optarg, "ad") == 0)
1465 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1466 else if (strcmp(optarg, "adoy") == 0)
1467 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1468 else if (strcmp(optarg, "d") == 0)
1469 timestamp_set_type(TS_DELTA);
1470 else if (strcmp(optarg, "dd") == 0)
1471 timestamp_set_type(TS_DELTA_DIS);
1472 else if (strcmp(optarg, "e") == 0)
1473 timestamp_set_type(TS_EPOCH);
1474 else if (strcmp(optarg, "u") == 0)
1475 timestamp_set_type(TS_UTC);
1476 else if (strcmp(optarg, "ud") == 0)
1477 timestamp_set_type(TS_UTC_WITH_YMD);
1478 else if (strcmp(optarg, "udoy") == 0)
1479 timestamp_set_type(TS_UTC_WITH_YDOY);
1481 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1482 cmdarg_err_cont("\t\"a\" for absolute\n"
1483 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1484 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1485 "\t\"d\" for delta\n"
1486 "\t\"dd\" for delta displayed\n"
1487 "\t\"e\" for epoch\n"
1488 "\t\"r\" for relative\n"
1489 "\t\"u\" for absolute UTC\n"
1490 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1491 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1495 case 'T': /* printing Type */
1496 print_packet_info = TRUE;
1497 if (strcmp(optarg, "text") == 0) {
1498 output_action = WRITE_TEXT;
1499 print_format = PR_FMT_TEXT;
1500 } else if (strcmp(optarg, "ps") == 0) {
1501 output_action = WRITE_TEXT;
1502 print_format = PR_FMT_PS;
1503 } else if (strcmp(optarg, "pdml") == 0) {
1504 output_action = WRITE_XML;
1505 print_details = TRUE; /* Need details */
1506 print_summary = FALSE; /* Don't allow summary */
1507 } else if (strcmp(optarg, "psml") == 0) {
1508 output_action = WRITE_XML;
1509 print_details = FALSE; /* Don't allow details */
1510 print_summary = TRUE; /* Need summary */
1511 } else if (strcmp(optarg, "fields") == 0) {
1512 output_action = WRITE_FIELDS;
1513 print_details = TRUE; /* Need full tree info */
1514 print_summary = FALSE; /* Don't allow summary */
1516 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1517 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1518 "\t specified by the -E option.\n"
1519 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1520 "\t details of a decoded packet. This information is equivalent to\n"
1521 "\t the packet details printed with the -V flag.\n"
1522 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1523 "\t the packets, or a multi-line view of the details of each of\n"
1524 "\t the packets, depending on whether the -V flag was specified.\n"
1525 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1526 "\t summary information of a decoded packet. This information is\n"
1527 "\t equivalent to the information shown in the one-line summary\n"
1528 "\t printed by default.\n"
1529 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1530 "\t packets, or a multi-line view of the details of each of the\n"
1531 "\t packets, depending on whether the -V flag was specified.\n"
1532 "\t This is the default.");
1536 case 'u': /* Seconds type */
1537 if (strcmp(optarg, "s") == 0)
1538 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1539 else if (strcmp(optarg, "hms") == 0)
1540 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1542 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1543 cmdarg_err_cont("\t\"s\" for seconds\n"
1544 "\t\"hms\" for hours, minutes and seconds");
1548 case 'v': /* Show version and exit */
1550 show_version(comp_info_str, runtime_info_str);
1551 g_string_free(comp_info_str, TRUE);
1552 g_string_free(runtime_info_str, TRUE);
1553 /* We don't really have to cleanup here, but it's a convenient way to test
1554 * start-up and shut-down of the epan library without any UI-specific
1555 * cruft getting in the way. Makes the results of running
1556 * $ ./tools/valgrind-wireshark -n
1557 * much more useful. */
1561 case 'O': /* Only output these protocols */
1562 /* already processed; just ignore it now */
1564 case 'V': /* Verbose */
1565 /* already processed; just ignore it now */
1567 case 'x': /* Print packet data in hex (and ASCII) */
1568 /* already processed; just ignore it now */
1576 /* We won't call the init function for the stat this soon
1577 as it would disallow MATE's fields (which are registered
1578 by the preferences set callback) from being used as
1579 part of a tap filter. Instead, we just add the argument
1580 to a list of stat arguments. */
1581 if (!process_stat_cmd_arg(optarg)) {
1582 if (strcmp("help", optarg)==0) {
1583 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1584 list_stat_cmd_args();
1587 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1588 list_stat_cmd_args();
1593 case '?': /* Bad flag - print usage message */
1596 list_capture_types();
1606 /* If we specified output fields, but not the output field type... */
1607 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1608 cmdarg_err("Output fields were specified with \"-e\", "
1609 "but \"-Tfields\" was not specified.");
1611 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1612 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1613 "specified with \"-e\".");
1618 /* If no capture filter or display filter has been specified, and there are
1619 still command-line arguments, treat them as the tokens of a capture
1620 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1621 flag was specified. */
1622 if (optind < argc) {
1623 if (cf_name != NULL) {
1624 if (dfilter != NULL) {
1625 cmdarg_err("Display filters were specified both with \"-d\" "
1626 "and with additional command-line arguments.");
1629 dfilter = get_args_as_string(argc, argv, optind);
1634 if (global_capture_opts.default_options.cfilter) {
1635 cmdarg_err("A default capture filter was specified both with \"-f\""
1636 " and with additional command-line arguments.");
1639 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1640 interface_options interface_opts;
1641 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1642 if (interface_opts.cfilter == NULL) {
1643 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1644 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1645 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1647 cmdarg_err("A capture filter was specified both with \"-f\""
1648 " and with additional command-line arguments.");
1652 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1654 capture_option_specified = TRUE;
1660 if (!global_capture_opts.saving_to_file) {
1661 /* We're not saving the capture to a file; if "-q" wasn't specified,
1662 we should print packet information */
1664 print_packet_info = TRUE;
1666 /* We're saving to a file; if we're writing to the standard output.
1667 and we'll also be writing dissected packets to the standard
1668 output, reject the request. At best, we could redirect that
1669 to the standard error; we *can't* write both to the standard
1670 output and have either of them be useful. */
1671 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1672 cmdarg_err("You can't write both raw packet data and dissected packets"
1673 " to the standard output.");
1678 /* We're not saving the capture to a file; if "-q" wasn't specified,
1679 we should print packet information */
1681 print_packet_info = TRUE;
1684 #ifndef HAVE_LIBPCAP
1685 if (capture_option_specified)
1686 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1694 if (output_action != WRITE_TEXT) {
1695 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1700 if (output_only != NULL) {
1703 if (!print_details) {
1704 cmdarg_err("-O requires -V");
1708 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1709 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1710 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1714 if (rfilter != NULL && !perform_two_pass_analysis) {
1715 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1720 if (list_link_layer_types) {
1721 /* We're supposed to list the link-layer types for an interface;
1722 did the user also specify a capture file to be read? */
1724 /* Yes - that's bogus. */
1725 cmdarg_err("You can't specify -L and a capture file to be read.");
1728 /* No - did they specify a ring buffer option? */
1729 if (global_capture_opts.multi_files_on) {
1730 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1736 * "-r" was specified, so we're reading a capture file.
1737 * Capture options don't apply here.
1740 /* We don't support capture filters when reading from a capture file
1741 (the BPF compiler doesn't support all link-layer types that we
1742 support in capture files we read). */
1743 if (global_capture_opts.default_options.cfilter) {
1744 cmdarg_err("Only read filters, not capture filters, "
1745 "can be specified when reading a capture file.");
1748 if (global_capture_opts.multi_files_on) {
1749 cmdarg_err("Multiple capture files requested, but "
1750 "a capture isn't being done.");
1753 if (global_capture_opts.has_file_duration) {
1754 cmdarg_err("Switching capture files after a time interval was specified, but "
1755 "a capture isn't being done.");
1758 if (global_capture_opts.has_ring_num_files) {
1759 cmdarg_err("A ring buffer of capture files was specified, but "
1760 "a capture isn't being done.");
1763 if (global_capture_opts.has_autostop_files) {
1764 cmdarg_err("A maximum number of capture files was specified, but "
1765 "a capture isn't being done.");
1768 if (global_capture_opts.capture_comment) {
1769 cmdarg_err("A capture comment was specified, but "
1770 "a capture isn't being done.\nThere's no support for adding "
1771 "a capture comment to an existing capture file.");
1775 /* Note: TShark now allows the restriction of a _read_ file by packet count
1776 * and byte count as well as a write file. Other autostop options remain valid
1777 * only for a write file.
1779 if (global_capture_opts.has_autostop_duration) {
1780 cmdarg_err("A maximum capture time was specified, but "
1781 "a capture isn't being done.");
1786 * "-r" wasn't specified, so we're doing a live capture.
1788 if (perform_two_pass_analysis) {
1789 /* Two-pass analysis doesn't work with live capture since it requires us
1790 * to buffer packets until we've read all of them, but a live capture
1791 * has no useful/meaningful definition of "all" */
1792 cmdarg_err("Live captures do not support two-pass analysis.");
1796 if (global_capture_opts.saving_to_file) {
1797 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1799 /* When capturing, we only support writing pcap or pcap-ng format. */
1800 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1801 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1802 cmdarg_err("Live captures can only be saved in libpcap format.");
1805 if (global_capture_opts.capture_comment &&
1806 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1807 cmdarg_err("A capture comment can only be written to a pcapng file.");
1810 if (global_capture_opts.multi_files_on) {
1811 /* Multiple-file mode doesn't work under certain conditions:
1812 a) it doesn't work if you're writing to the standard output;
1813 b) it doesn't work if you're writing to a pipe;
1815 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1816 cmdarg_err("Multiple capture files requested, but "
1817 "the capture is being written to the standard output.");
1820 if (global_capture_opts.output_to_pipe) {
1821 cmdarg_err("Multiple capture files requested, but "
1822 "the capture file is a pipe.");
1825 if (!global_capture_opts.has_autostop_filesize &&
1826 !global_capture_opts.has_file_duration) {
1827 cmdarg_err("Multiple capture files requested, but "
1828 "no maximum capture file size or duration was specified.");
1832 /* Currently, we don't support read or display filters when capturing
1833 and saving the packets. */
1834 if (rfilter != NULL) {
1835 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1838 if (dfilter != NULL) {
1839 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1843 /* They didn't specify a "-w" flag, so we won't be saving to a
1844 capture file. Check for options that only make sense if
1845 we're saving to a file. */
1846 if (global_capture_opts.has_autostop_filesize) {
1847 cmdarg_err("Maximum capture file size specified, but "
1848 "capture isn't being saved to a file.");
1851 if (global_capture_opts.multi_files_on) {
1852 cmdarg_err("Multiple capture files requested, but "
1853 "the capture isn't being saved to a file.");
1856 if (global_capture_opts.capture_comment) {
1857 cmdarg_err("A capture comment was specified, but "
1858 "the capture isn't being saved to a file.");
1867 /* Start windows sockets */
1868 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1871 /* Notify all registered modules that have had any of their preferences
1872 changed either from one of the preferences file or from the command
1873 line that their preferences have changed. */
1876 /* At this point MATE will have registered its field array so we can
1877 have a tap filter with one of MATE's late-registered fields as part
1878 of the filter. We can now process all the "-z" arguments. */
1879 start_requested_stats();
1882 /* We currently don't support taps, or printing dissected packets,
1883 if we're writing to a pipe. */
1884 if (global_capture_opts.saving_to_file &&
1885 global_capture_opts.output_to_pipe) {
1886 if (tap_listeners_require_dissection()) {
1887 cmdarg_err("Taps aren't supported when saving to a pipe.");
1890 if (print_packet_info) {
1891 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1897 /* disabled protocols as per configuration file */
1898 if (gdp_path == NULL && dp_path == NULL) {
1899 set_disabled_protos_list();
1902 /* Build the column format array */
1903 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1906 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1907 capture_opts_trim_ring_num_files(&global_capture_opts);
1910 if (rfilter != NULL) {
1911 if (!dfilter_compile(rfilter, &rfcode)) {
1912 cmdarg_err("%s", dfilter_error_msg);
1914 #ifdef HAVE_PCAP_OPEN_DEAD
1918 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1920 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1922 " Note: That read filter code looks like a valid capture filter;\n"
1923 " maybe you mixed them up?");
1932 cfile.rfcode = rfcode;
1934 if (dfilter != NULL) {
1935 if (!dfilter_compile(dfilter, &dfcode)) {
1936 cmdarg_err("%s", dfilter_error_msg);
1938 #ifdef HAVE_PCAP_OPEN_DEAD
1942 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1944 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1946 " Note: That display filter code looks like a valid capture filter;\n"
1947 " maybe you mixed them up?");
1956 cfile.dfcode = dfcode;
1958 if (print_packet_info) {
1959 /* If we're printing as text or PostScript, we have
1960 to create a print stream. */
1961 if (output_action == WRITE_TEXT) {
1962 switch (print_format) {
1965 print_stream = print_stream_text_stdio_new(stdout);
1969 print_stream = print_stream_ps_stdio_new(stdout);
1973 g_assert_not_reached();
1978 /* We have to dissect each packet if:
1980 we're printing information about each packet;
1982 we're using a read filter on the packets;
1984 we're using a display filter on the packets;
1986 we're using any taps that need dissection. */
1987 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
1991 * We're reading a capture file.
1995 * Immediately relinquish any special privileges we have; we must not
1996 * be allowed to read any capture files the user running TShark
1999 relinquish_special_privs_perm();
2000 print_current_user();
2002 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
2007 /* Set timestamp precision; there should arguably be a command-line
2008 option to let the user set this. */
2009 switch(wtap_file_tsprecision(cfile.wth)) {
2010 case(WTAP_FILE_TSPREC_SEC):
2011 timestamp_set_precision(TS_PREC_AUTO_SEC);
2013 case(WTAP_FILE_TSPREC_DSEC):
2014 timestamp_set_precision(TS_PREC_AUTO_DSEC);
2016 case(WTAP_FILE_TSPREC_CSEC):
2017 timestamp_set_precision(TS_PREC_AUTO_CSEC);
2019 case(WTAP_FILE_TSPREC_MSEC):
2020 timestamp_set_precision(TS_PREC_AUTO_MSEC);
2022 case(WTAP_FILE_TSPREC_USEC):
2023 timestamp_set_precision(TS_PREC_AUTO_USEC);
2025 case(WTAP_FILE_TSPREC_NSEC):
2026 timestamp_set_precision(TS_PREC_AUTO_NSEC);
2029 g_assert_not_reached();
2032 /* Process the packets in the file */
2035 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2036 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2037 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2039 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
2042 CATCH(OutOfMemoryError) {
2046 "Sorry, but TShark has to terminate now!\n"
2048 "Some infos / workarounds can be found at:\n"
2049 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2054 /* We still dump out the results of taps, etc., as we might have
2055 read some packets; however, we exit with an error status. */
2059 /* No capture file specified, so we're supposed to do a live capture
2060 or get a list of link-layer types for a live capture device;
2061 do we have support for live captures? */
2063 /* if no interface was specified, pick a default */
2064 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2065 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2066 if (exit_status != 0)
2069 /* if requested, list the link layer types and exit */
2070 if (list_link_layer_types) {
2073 /* Get the list of link-layer types for the capture devices. */
2074 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2075 interface_options interface_opts;
2076 if_capabilities_t *caps;
2078 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2079 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2081 cmdarg_err("%s", err_str);
2085 if (caps->data_link_types == NULL) {
2086 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2089 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2090 free_if_capabilities(caps);
2096 * If the standard error isn't a terminal, don't print packet counts,
2097 * as they won't show up on the user's terminal and they'll get in
2098 * the way of error messages in the file (to which we assume the
2099 * standard error was redirected; if it's redirected to the null
2100 * device, there's no point in printing packet counts anyway).
2102 * Otherwise, if we're printing packet information and the standard
2103 * output is a terminal (which we assume means the standard output and
2104 * error are going to the same terminal), don't print packet counts,
2105 * as they'll get in the way of the packet information.
2107 * Otherwise, if the user specified -q, don't print packet counts.
2109 * Otherwise, print packet counts.
2111 * XXX - what if the user wants to do a live capture, doesn't want
2112 * to save it to a file, doesn't want information printed for each
2113 * packet, does want some "-z" statistic, and wants packet counts
2114 * so they know whether they're seeing any packets? -q will
2115 * suppress the information printed for each packet, but it'll
2116 * also suppress the packet counts.
2118 if (!isatty(fileno(stderr)))
2119 print_packet_counts = FALSE;
2120 else if (print_packet_info && isatty(fileno(stdout)))
2121 print_packet_counts = FALSE;
2123 print_packet_counts = FALSE;
2125 print_packet_counts = TRUE;
2127 if (print_packet_info) {
2128 if (!write_preamble(NULL)) {
2129 show_print_file_io_error(errno);
2134 /* For now, assume libpcap gives microsecond precision. */
2135 timestamp_set_precision(TS_PREC_AUTO_USEC);
2138 * XXX - this returns FALSE if an error occurred, but it also
2139 * returns FALSE if the capture stops because a time limit
2140 * was reached (and possibly other limits), so we can't assume
2141 * it means an error.
2143 * The capture code is a bit twisty, so it doesn't appear to
2144 * be an easy fix. We just ignore the return value for now.
2145 * Instead, pass on the exit status from the capture child.
2148 exit_status = global_capture_session.fork_child_status;
2150 if (print_packet_info) {
2151 if (!write_finale()) {
2153 show_print_file_io_error(err);
2157 /* No - complain. */
2158 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2165 if (cfile.frames != NULL) {
2166 free_frame_data_sequence(cfile.frames);
2167 cfile.frames = NULL;
2170 draw_tap_listeners(TRUE);
2171 funnel_dump_all_text_windows();
2172 epan_free(cfile.epan);
2175 output_fields_free(output_fields);
2176 output_fields = NULL;
2181 /*#define USE_BROKEN_G_MAIN_LOOP*/
2183 #ifdef USE_BROKEN_G_MAIN_LOOP
2186 gboolean loop_running = FALSE;
2188 guint32 packet_count = 0;
2191 typedef struct pipe_input_tag {
2195 pipe_input_cb_t input_cb;
2196 guint pipe_input_id;
2198 GMutex *callback_running;
2202 static pipe_input_t pipe_input;
2205 /* The timer has expired, see if there's stuff to read from the pipe,
2206 if so, do the callback */
2208 pipe_timer_cb(gpointer data)
2214 pipe_input_t *pipe_input_p = data;
2215 gint iterations = 0;
2217 g_mutex_lock (pipe_input_p->callback_running);
2219 /* try to read data from the pipe only 5 times, to avoid blocking */
2220 while(iterations < 5) {
2221 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2223 /* Oddly enough although Named pipes don't work on win9x,
2224 PeekNamedPipe does !!! */
2225 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2226 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2228 /* Get the child process exit status */
2229 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2232 /* If the Peek returned an error, or there are bytes to be read
2233 or the childwatcher thread has terminated then call the normal
2235 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2237 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2239 /* And call the real handler */
2240 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2241 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2242 /* pipe closed, return false so that the timer is stopped */
2243 g_mutex_unlock (pipe_input_p->callback_running);
2248 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2249 /* No data, stop now */
2256 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2258 g_mutex_unlock (pipe_input_p->callback_running);
2260 /* we didn't stopped the timer, so let it run */
2267 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2270 pipe_input.source = source;
2271 pipe_input.child_process = child_process;
2272 pipe_input.user_data = user_data;
2273 pipe_input.input_cb = input_cb;
2276 #if GLIB_CHECK_VERSION(2,31,0)
2277 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2278 g_mutex_init(pipe_input.callback_running);
2280 pipe_input.callback_running = g_mutex_new();
2282 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2283 do this but that doesn't cover all win32 platforms. GTK can do
2284 this but doesn't seem to work over processes. Attempt to do
2285 something similar here, start a timer and check for data on every
2287 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2288 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2292 static const nstime_t *
2293 tshark_get_frame_ts(void *data, guint32 frame_num)
2295 capture_file *cf = (capture_file *) data;
2297 if (ref && ref->num == frame_num)
2298 return &ref->abs_ts;
2300 if (prev_dis && prev_dis->num == frame_num)
2301 return &prev_dis->abs_ts;
2303 if (prev_cap && prev_cap->num == frame_num)
2304 return &prev_cap->abs_ts;
2307 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2309 return (fd) ? &fd->abs_ts : NULL;
2316 tshark_epan_new(capture_file *cf)
2318 epan_t *epan = epan_new();
2321 epan->get_frame_ts = tshark_get_frame_ts;
2322 epan->get_interface_name = cap_file_get_interface_name;
2323 epan->get_user_comment = NULL;
2334 GString *str = g_string_new("");
2335 #ifdef USE_TSHARK_SELECT
2339 struct sigaction action, oldaction;
2343 * XXX - dropping privileges is still required, until code cleanup is done
2345 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2346 * when it's done, we don't need special privileges to run tshark at all,
2347 * therefore we don't need to drop these privileges
2348 * The only thing we might want to keep is a warning if tshark is run as root,
2349 * as it's no longer necessary and potentially dangerous.
2351 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2352 * We've opened the capture device, so we shouldn't need any special
2353 * privileges any more; relinquish those privileges.
2355 * XXX - if we have saved set-user-ID support, we should give up those
2356 * privileges immediately, and then reclaim them long enough to get
2357 * a list of network interfaces and to open one, and then give them
2358 * up again, so that stuff we do while processing the argument list,
2359 * reading the user's preferences, loading and starting plugins
2360 * (especially *user* plugins), etc. is done with the user's privileges,
2361 * not special privileges.
2363 relinquish_special_privs_perm();
2364 print_current_user();
2366 /* Create new dissection section. */
2367 epan_free(cfile.epan);
2368 cfile.epan = tshark_epan_new(&cfile);
2371 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2372 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2374 /* Catch SIGINT and SIGTERM and, if we get either of them,
2375 clean up and exit. If SIGHUP isn't being ignored, catch
2376 it too and, if we get it, clean up and exit.
2378 We restart any read that was in progress, so that it doesn't
2379 disrupt reading from the sync pipe. The signal handler tells
2380 the capture child to finish; it will report that it finished,
2381 or will exit abnormally, so we'll stop reading from the sync
2382 pipe, pick up the exit status, and quit. */
2383 memset(&action, 0, sizeof(action));
2384 action.sa_handler = capture_cleanup;
2385 action.sa_flags = SA_RESTART;
2386 sigemptyset(&action.sa_mask);
2387 sigaction(SIGTERM, &action, NULL);
2388 sigaction(SIGINT, &action, NULL);
2389 sigaction(SIGHUP, NULL, &oldaction);
2390 if (oldaction.sa_handler == SIG_DFL)
2391 sigaction(SIGHUP, &action, NULL);
2394 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2395 quiet mode, report the number of packets we've captured.
2397 Again, restart any read that was in progress, so that it doesn't
2398 disrupt reading from the sync pipe. */
2399 action.sa_handler = report_counts_siginfo;
2400 action.sa_flags = SA_RESTART;
2401 sigemptyset(&action.sa_mask);
2402 sigaction(SIGINFO, &action, NULL);
2403 #endif /* SIGINFO */
2406 global_capture_session.state = CAPTURE_PREPARING;
2408 /* Let the user know which interfaces were chosen. */
2409 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2410 interface_options interface_opts;
2412 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2413 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2414 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2415 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2418 if (global_capture_opts.ifaces->len < 2)
2420 if (global_capture_opts.ifaces->len < 4)
2423 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2424 interface_options interface_opts;
2426 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2428 if (global_capture_opts.ifaces->len > 2) {
2429 g_string_append_printf(str, ",");
2431 g_string_append_printf(str, " ");
2432 if (i == global_capture_opts.ifaces->len - 1) {
2433 g_string_append_printf(str, "and ");
2436 g_string_append_printf(str, "'%s'", interface_opts.descr);
2439 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2441 if (really_quiet == FALSE)
2442 fprintf(stderr, "Capturing on %s\n", str->str);
2444 g_string_free(str, TRUE);
2446 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2451 /* the actual capture loop
2453 * XXX - glib doesn't seem to provide any event based loop handling.
2455 * XXX - for whatever reason,
2456 * calling g_main_loop_new() ends up in 100% cpu load.
2458 * But that doesn't matter: in UNIX we can use select() to find an input
2459 * source with something to do.
2461 * But that doesn't matter because we're in a CLI (that doesn't need to
2462 * update a GUI or something at the same time) so it's OK if we block
2463 * trying to read from the pipe.
2465 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2466 * wrong (but I leave it there in case I am...).
2469 #ifdef USE_TSHARK_SELECT
2471 FD_SET(pipe_input.source, &readfds);
2474 loop_running = TRUE;
2478 while (loop_running)
2480 #ifdef USE_TSHARK_SELECT
2481 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2487 } else if (ret == 1) {
2489 /* Call the real handler */
2490 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2491 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2494 #ifdef USE_TSHARK_SELECT
2499 CATCH(OutOfMemoryError) {
2503 "Sorry, but TShark has to terminate now!\n"
2505 "Some infos / workarounds can be found at:\n"
2506 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2513 /* capture child detected an error */
2515 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2517 cmdarg_err("%s", error_msg);
2518 cmdarg_err_cont("%s", secondary_error_msg);
2522 /* capture child detected an capture filter related error */
2524 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2526 capture_options *capture_opts = cap_session->capture_opts;
2527 dfilter_t *rfcode = NULL;
2528 interface_options interface_opts;
2530 g_assert(i < capture_opts->ifaces->len);
2531 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2533 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2535 "Invalid capture filter \"%s\" for interface '%s'!\n"
2537 "That string looks like a valid display filter; however, it isn't a valid\n"
2538 "capture filter (%s).\n"
2540 "Note that display filters and capture filters don't have the same syntax,\n"
2541 "so you can't use most display filter expressions as capture filters.\n"
2543 "See the User's Guide for a description of the capture filter syntax.",
2544 interface_opts.cfilter, interface_opts.descr, error_message);
2545 dfilter_free(rfcode);
2548 "Invalid capture filter \"%s\" for interface '%s'!\n"
2550 "That string isn't a valid capture filter (%s).\n"
2551 "See the User's Guide for a description of the capture filter syntax.",
2552 interface_opts.cfilter, interface_opts.descr, error_message);
2557 /* capture child tells us we have a new (or the first) capture file */
2559 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2561 capture_options *capture_opts = cap_session->capture_opts;
2562 gboolean is_tempfile;
2565 if (cap_session->state == CAPTURE_PREPARING) {
2566 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2568 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2570 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2572 /* free the old filename */
2573 if (capture_opts->save_file != NULL) {
2575 /* we start a new capture file, close the old one (if we had one before) */
2576 if ( ((capture_file *) cap_session->cf)->state != FILE_CLOSED) {
2577 if ( ((capture_file *) cap_session->cf)->wth != NULL) {
2578 wtap_close(((capture_file *) cap_session->cf)->wth);
2579 ((capture_file *) cap_session->cf)->wth = NULL;
2581 ((capture_file *) cap_session->cf)->state = FILE_CLOSED;
2584 g_free(capture_opts->save_file);
2585 is_tempfile = FALSE;
2587 /* we didn't had a save_file before, must be a tempfile */
2591 /* save the new filename */
2592 capture_opts->save_file = g_strdup(new_file);
2594 /* if we are in real-time mode, open the new file now */
2595 if (do_dissection) {
2596 /* Attempt to open the capture file and set up to read from it. */
2597 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, is_tempfile, &err)) {
2601 /* Don't unlink (delete) the save file - leave it around,
2602 for debugging purposes. */
2603 g_free(capture_opts->save_file);
2604 capture_opts->save_file = NULL;
2609 cap_session->state = CAPTURE_RUNNING;
2615 /* capture child tells us we have new packets to read */
2617 capture_input_new_packets(capture_session *cap_session, int to_read)
2623 capture_file *cf = (capture_file *)cap_session->cf;
2624 gboolean filtering_tap_listeners;
2629 * Prevent a SIGINFO handler from writing to the standard error while
2630 * we're doing so or writing to the standard output; instead, have it
2631 * just set a flag telling us to print that information when we're done.
2634 #endif /* SIGINFO */
2636 /* Do we have any tap listeners with filters? */
2637 filtering_tap_listeners = have_filtering_tap_listeners();
2639 /* Get the union of the flags for all tap listeners. */
2640 tap_flags = union_of_tap_listener_flags();
2642 if (do_dissection) {
2643 gboolean create_proto_tree;
2644 epan_dissect_t *edt;
2646 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2647 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2648 create_proto_tree = TRUE;
2650 create_proto_tree = FALSE;
2652 /* The protocol tree will be "visible", i.e., printed, only if we're
2653 printing packet details, which is true if we're printing stuff
2654 ("print_packet_info" is true) and we're in verbose mode
2655 ("packet_details" is true). */
2656 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2658 while (to_read-- && cf->wth) {
2659 wtap_cleareof(cf->wth);
2660 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2662 /* read from file failed, tell the capture child to stop */
2663 sync_pipe_stop(cap_session);
2664 wtap_close(cf->wth);
2667 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2668 wtap_buf_ptr(cf->wth),
2672 /* packet successfully read and gone through the "Read Filter" */
2677 epan_dissect_free(edt);
2681 * Dumpcap's doing all the work; we're not doing any dissection.
2682 * Count all the packets it wrote.
2684 packet_count += to_read;
2687 if (print_packet_counts) {
2688 /* We're printing packet counts. */
2689 if (packet_count != 0) {
2690 fprintf(stderr, "\r%u ", packet_count);
2691 /* stderr could be line buffered */
2698 * Allow SIGINFO handlers to write.
2703 * If a SIGINFO handler asked us to write out capture counts, do so.
2707 #endif /* SIGINFO */
2713 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2714 /* Report the count only if we aren't printing a packet count
2715 as packets arrive. */
2716 fprintf(stderr, "%u packet%s captured\n", packet_count,
2717 plurality(packet_count, "", "s"));
2720 infoprint = FALSE; /* we just reported it */
2721 #endif /* SIGINFO */
2726 report_counts_siginfo(int signum _U_)
2728 int sav_errno = errno;
2729 /* If we've been told to delay printing, just set a flag asking
2730 that we print counts (if we're supposed to), otherwise print
2731 the count of packets captured (if we're supposed to). */
2738 #endif /* SIGINFO */
2741 /* capture child detected any packet drops? */
2743 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2745 if (print_packet_counts) {
2746 /* We're printing packet counts to stderr.
2747 Send a newline so that we move to the line after the packet count. */
2748 fprintf(stderr, "\n");
2752 /* We're printing packet counts to stderr.
2753 Send a newline so that we move to the line after the packet count. */
2754 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2760 * Capture child closed its side of the pipe, report any error and
2761 * do the required cleanup.
2764 capture_input_closed(capture_session *cap_session, gchar *msg)
2766 capture_file *cf = (capture_file *) cap_session->cf;
2769 fprintf(stderr, "tshark: %s\n", msg);
2773 if (cf != NULL && cf->wth != NULL) {
2774 wtap_close(cf->wth);
2775 if (cf->is_tempfile) {
2776 ws_unlink(cf->filename);
2779 #ifdef USE_BROKEN_G_MAIN_LOOP
2780 /*g_main_loop_quit(loop);*/
2783 loop_running = FALSE;
2792 capture_cleanup(DWORD ctrltype _U_)
2794 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2795 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2796 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2797 like SIGTERM at least when the machine's shutting down.
2799 For now, we handle them all as indications that we should clean up
2800 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2803 We must return TRUE so that no other handler - such as one that would
2804 terminate the process - gets called.
2806 XXX - for some reason, typing ^C to TShark, if you run this in
2807 a Cygwin console window in at least some versions of Cygwin,
2808 causes TShark to terminate immediately; this routine gets
2809 called, but the main loop doesn't get a chance to run and
2810 exit cleanly, at least if this is compiled with Microsoft Visual
2811 C++ (i.e., it's a property of the Cygwin console window or Bash;
2812 it happens if TShark is not built with Cygwin - for all I know,
2813 building it with Cygwin may make the problem go away). */
2815 /* tell the capture child to stop */
2816 sync_pipe_stop(&global_capture_session);
2818 /* don't stop our own loop already here, otherwise status messages and
2819 * cleanup wouldn't be done properly. The child will indicate the stop of
2820 * everything by calling capture_input_closed() later */
2826 capture_cleanup(int signum _U_)
2828 /* tell the capture child to stop */
2829 sync_pipe_stop(&global_capture_session);
2831 /* don't stop our own loop already here, otherwise status messages and
2832 * cleanup wouldn't be done properly. The child will indicate the stop of
2833 * everything by calling capture_input_closed() later */
2836 #endif /* HAVE_LIBPCAP */
2839 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2840 gint64 offset, struct wtap_pkthdr *whdr,
2847 /* The frame number of this packet is one more than the count of
2848 frames in this packet. */
2849 framenum = cf->count + 1;
2851 /* If we're not running a display filter and we're not printing any
2852 packet information, we don't need to do a dissection. This means
2853 that all packets can be marked as 'passed'. */
2856 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2858 /* If we're going to print packet information, or we're going to
2859 run a read filter, or display filter, or we're going to process taps, set up to
2860 do a dissection and do so. */
2862 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2863 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2864 /* Grab any resolved addresses */
2865 host_name_lookup_process();
2867 /* If we're running a read filter, prime the epan_dissect_t with that
2870 epan_dissect_prime_dfilter(edt, cf->rfcode);
2872 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2874 if (ref == &fdlocal) {
2875 ref_frame = fdlocal;
2879 epan_dissect_run(edt, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2881 /* Run the read filter if we have one. */
2883 passed = dfilter_apply_edt(cf->rfcode, edt);
2887 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2888 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2890 /* If we're not doing dissection then there won't be any dependent frames.
2891 * More importantly, edt.pi.dependent_frames won't be initialized because
2892 * epan hasn't been initialized.
2895 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2900 /* if we don't add it to the frame_data_sequence, clean it up right now
2902 frame_data_destroy(&fdlocal);
2906 epan_dissect_reset(edt);
2912 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2913 struct wtap_pkthdr *phdr, Buffer *buf,
2919 /* If we're not running a display filter and we're not printing any
2920 packet information, we don't need to do a dissection. This means
2921 that all packets can be marked as 'passed'. */
2924 /* If we're going to print packet information, or we're going to
2925 run a read filter, or we're going to process taps, set up to
2926 do a dissection and do so. */
2928 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2929 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2930 /* Grab any resolved addresses */
2931 host_name_lookup_process();
2933 /* If we're running a display filter, prime the epan_dissect_t with that
2936 epan_dissect_prime_dfilter(edt, cf->dfcode);
2938 col_custom_prime_edt(edt, &cf->cinfo);
2940 /* We only need the columns if either
2941 1) some tap needs the columns
2943 2) we're printing packet info but we're *not* verbose; in verbose
2944 mode, we print the protocol tree, not the protocol summary.
2946 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2951 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2958 epan_dissect_run_with_taps(edt, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2960 /* Run the read/display filter if we have one. */
2962 passed = dfilter_apply_edt(cf->dfcode, edt);
2966 frame_data_set_after_dissect(fdata, &cum_bytes);
2967 /* Process this packet. */
2968 if (print_packet_info) {
2969 /* We're printing packet information; print the information for
2971 print_packet(cf, edt);
2973 /* The ANSI C standard does not appear to *require* that a line-buffered
2974 stream be flushed to the host environment whenever a newline is
2975 written, it just says that, on such a stream, characters "are
2976 intended to be transmitted to or from the host environment as a
2977 block when a new-line character is encountered".
2979 The Visual C++ 6.0 C implementation doesn't do what is intended;
2980 even if you set a stream to be line-buffered, it still doesn't
2981 flush the buffer at the end of every line.
2983 So, if the "-l" flag was specified, we flush the standard output
2984 at the end of a packet. This will do the right thing if we're
2985 printing packet summary lines, and, as we print the entire protocol
2986 tree for a single packet without waiting for anything to happen,
2987 it should be as good as line-buffered mode if we're printing
2988 protocol trees. (The whole reason for the "-l" flag in either
2989 tcpdump or TShark is to allow the output of a live capture to
2990 be piped to a program or script and to have that script see the
2991 information for the packet as soon as it's printed, rather than
2992 having to wait until a standard I/O buffer fills up. */
2996 if (ferror(stdout)) {
2997 show_print_file_io_error(errno);
3006 epan_dissect_reset(edt);
3008 return passed || fdata->flags.dependent_of_displayed;
3012 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3013 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3016 int snapshot_length;
3020 gchar *err_info = NULL;
3022 char *save_file_string = NULL;
3023 gboolean filtering_tap_listeners;
3025 wtapng_section_t *shb_hdr;
3026 wtapng_iface_descriptions_t *idb_inf;
3028 struct wtap_pkthdr phdr;
3030 epan_dissect_t *edt = NULL;
3032 shb_hdr = wtap_file_get_shb_info(cf->wth);
3033 idb_inf = wtap_file_get_idb_info(cf->wth);
3034 #ifdef PCAP_NG_DEFAULT
3035 if (idb_inf->number_of_interfaces > 1) {
3036 linktype = WTAP_ENCAP_PER_PACKET;
3038 linktype = wtap_file_encap(cf->wth);
3041 linktype = wtap_file_encap(cf->wth);
3043 if (save_file != NULL) {
3044 /* Get a string that describes what we're writing to */
3045 save_file_string = output_file_description(save_file);
3047 /* Set up to write to the capture file. */
3048 snapshot_length = wtap_snapshot_length(cf->wth);
3049 if (snapshot_length == 0) {
3050 /* Snapshot length of input file not known. */
3051 snapshot_length = WTAP_MAX_PACKET_SIZE;
3053 /* If we don't have an application name add Tshark */
3054 if (shb_hdr->shb_user_appl == NULL) {
3055 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_gitversion);
3056 shb_hdr->shb_user_appl = appname;
3059 if (linktype != WTAP_ENCAP_PER_PACKET &&
3060 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3061 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3062 snapshot_length, FALSE /* compressed */, &err);
3064 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3065 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3071 /* We couldn't set up to write to the capture file. */
3074 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3075 cmdarg_err("Capture files can't be written in that format.");
3078 case WTAP_ERR_UNSUPPORTED_ENCAP:
3079 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3080 cmdarg_err("The capture file being read can't be written as a "
3081 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3084 case WTAP_ERR_CANT_OPEN:
3085 cmdarg_err("The %s couldn't be created for some "
3086 "unknown reason.", save_file_string);
3089 case WTAP_ERR_SHORT_WRITE:
3090 cmdarg_err("A full header couldn't be written to the %s.",
3095 cmdarg_err("The %s could not be created: %s.", save_file_string,
3096 wtap_strerror(err));
3102 if (print_packet_info) {
3103 if (!write_preamble(cf)) {
3105 show_print_file_io_error(err);
3114 if (pdh && out_file_name_res) {
3115 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3116 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3117 wtap_file_type_subtype_short_string(out_file_type));
3121 /* Do we have any tap listeners with filters? */
3122 filtering_tap_listeners = have_filtering_tap_listeners();
3124 /* Get the union of the flags for all tap listeners. */
3125 tap_flags = union_of_tap_listener_flags();
3127 if (perform_two_pass_analysis) {
3130 /* Allocate a frame_data_sequence for all the frames. */
3131 cf->frames = new_frame_data_sequence();
3133 if (do_dissection) {
3134 gboolean create_proto_tree = FALSE;
3136 /* If we're going to be applying a filter, we'll need to
3137 create a protocol tree against which to apply the filter. */
3139 create_proto_tree = TRUE;
3141 /* We're not going to display the protocol tree on this pass,
3142 so it's not going to be "visible". */
3143 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3146 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3147 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3148 wtap_buf_ptr(cf->wth))) {
3149 /* Stop reading if we have the maximum number of packets;
3150 * When the -c option has not been used, max_packet_count
3151 * starts at 0, which practically means, never stop reading.
3152 * (unless we roll over max_packet_count ?)
3154 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3155 err = 0; /* This is not an error */
3162 epan_dissect_free(edt);
3166 /* Close the sequential I/O side, to free up memory it requires. */
3167 wtap_sequential_close(cf->wth);
3169 /* Allow the protocol dissectors to free up memory that they
3170 * don't need after the sequential run-through of the packets. */
3171 postseq_cleanup_all_protocols();
3175 buffer_init(&buf, 1500);
3177 if (do_dissection) {
3178 gboolean create_proto_tree;
3180 if (cf->dfcode || print_details || filtering_tap_listeners ||
3181 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3182 create_proto_tree = TRUE;
3184 create_proto_tree = FALSE;
3186 /* The protocol tree will be "visible", i.e., printed, only if we're
3187 printing packet details, which is true if we're printing stuff
3188 ("print_packet_info" is true) and we're in verbose mode
3189 ("packet_details" is true). */
3190 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3193 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3194 fdata = frame_data_sequence_find(cf->frames, framenum);
3195 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3197 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3199 /* Either there's no read filtering or this packet passed the
3200 filter, so, if we're writing to a capture file, write
3203 if (!wtap_dump(pdh, &phdr, buffer_start_ptr(&buf), &err)) {
3204 /* Error writing to a capture file */
3207 case WTAP_ERR_UNSUPPORTED_ENCAP:
3209 * This is a problem with the particular frame we're writing
3210 * and the file type and subtype we're writing; note that,
3211 * and report the frame number and file type/subtype.
3213 * XXX - framenum is not necessarily the frame number in
3214 * the input file if there was a read filter.
3217 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3218 framenum, cf->filename,
3219 wtap_file_type_subtype_short_string(out_file_type));
3222 case WTAP_ERR_PACKET_TOO_LARGE:
3224 * This is a problem with the particular frame we're writing
3225 * and the file type and subtype we're writing; note that,
3226 * and report the frame number and file type/subtype.
3228 * XXX - framenum is not necessarily the frame number in
3229 * the input file if there was a read filter.
3232 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3233 framenum, cf->filename,
3234 wtap_file_type_subtype_short_string(out_file_type));
3238 show_capture_file_io_error(save_file, err, FALSE);
3241 wtap_dump_close(pdh, &err);
3251 epan_dissect_free(edt);
3260 if (do_dissection) {
3261 gboolean create_proto_tree;
3263 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3264 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3265 create_proto_tree = TRUE;
3267 create_proto_tree = FALSE;
3269 /* The protocol tree will be "visible", i.e., printed, only if we're
3270 printing packet details, which is true if we're printing stuff
3271 ("print_packet_info" is true) and we're in verbose mode
3272 ("packet_details" is true). */
3273 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3276 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3279 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3280 wtap_buf_ptr(cf->wth),
3282 /* Either there's no read filtering or this packet passed the
3283 filter, so, if we're writing to a capture file, write
3286 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err)) {
3287 /* Error writing to a capture file */
3290 case WTAP_ERR_UNSUPPORTED_ENCAP:
3292 * This is a problem with the particular frame we're writing
3293 * and the file type and subtype we're writing; note that,
3294 * and report the frame number and file type/subtype.
3297 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3298 framenum, cf->filename,
3299 wtap_file_type_subtype_short_string(out_file_type));
3302 case WTAP_ERR_PACKET_TOO_LARGE:
3304 * This is a problem with the particular frame we're writing
3305 * and the file type and subtype we're writing; note that,
3306 * and report the frame number and file type/subtype.
3309 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3310 framenum, cf->filename,
3311 wtap_file_type_subtype_short_string(out_file_type));
3315 show_capture_file_io_error(save_file, err, FALSE);
3318 wtap_dump_close(pdh, &err);
3324 /* Stop reading if we have the maximum number of packets;
3325 * When the -c option has not been used, max_packet_count
3326 * starts at 0, which practically means, never stop reading.
3327 * (unless we roll over max_packet_count ?)
3329 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3330 err = 0; /* This is not an error */
3336 epan_dissect_free(edt);
3343 * Print a message noting that the read failed somewhere along the line.
3345 * If we're printing packet data, and the standard output and error are
3346 * going to the same place, flush the standard output, so everything
3347 * buffered up is written, and then print a newline to the standard error
3348 * before printing the error message, to separate it from the packet
3349 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3350 * the _fstat() documentation at Microsoft doesn't indicate whether
3351 * st_ino is even supported.)
3354 if (print_packet_info) {
3355 struct stat stat_stdout, stat_stderr;
3357 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
3358 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3359 stat_stdout.st_ino == stat_stderr.st_ino) {
3361 fprintf(stderr, "\n");
3368 case WTAP_ERR_UNSUPPORTED:
3369 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3370 cf->filename, err_info);
3374 case WTAP_ERR_UNSUPPORTED_ENCAP:
3375 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
3376 cf->filename, err_info);
3380 case WTAP_ERR_CANT_READ:
3381 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
3385 case WTAP_ERR_SHORT_READ:
3386 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3390 case WTAP_ERR_BAD_FILE:
3391 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3392 cf->filename, err_info);
3396 case WTAP_ERR_DECOMPRESS:
3397 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3398 "(%s)", cf->filename, err_info);
3402 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3403 cf->filename, wtap_strerror(err));
3406 if (save_file != NULL) {
3407 /* Now close the capture file. */
3408 if (!wtap_dump_close(pdh, &err))
3409 show_capture_file_io_error(save_file, err, TRUE);
3412 if (save_file != NULL) {
3413 /* Now close the capture file. */
3414 if (!wtap_dump_close(pdh, &err))
3415 show_capture_file_io_error(save_file, err, TRUE);
3417 if (print_packet_info) {
3418 if (!write_finale()) {
3420 show_print_file_io_error(err);
3427 wtap_close(cf->wth);
3430 g_free(save_file_string);
3437 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3438 const guchar *pd, guint tap_flags)
3444 /* Count this packet. */
3447 /* If we're not running a display filter and we're not printing any
3448 packet information, we don't need to do a dissection. This means
3449 that all packets can be marked as 'passed'. */
3452 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3454 /* If we're going to print packet information, or we're going to
3455 run a read filter, or we're going to process taps, set up to
3456 do a dissection and do so. */
3458 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3459 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3460 /* Grab any resolved addresses */
3461 host_name_lookup_process();
3463 /* If we're running a filter, prime the epan_dissect_t with that
3466 epan_dissect_prime_dfilter(edt, cf->dfcode);
3468 col_custom_prime_edt(edt, &cf->cinfo);
3470 /* We only need the columns if either
3471 1) some tap needs the columns
3473 2) we're printing packet info but we're *not* verbose; in verbose
3474 mode, we print the protocol tree, not the protocol summary.
3476 3) there is a column mapped as an individual field */
3477 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3482 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3484 if (ref == &fdata) {
3489 epan_dissect_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3491 /* Run the filter if we have it. */
3493 passed = dfilter_apply_edt(cf->dfcode, edt);
3497 frame_data_set_after_dissect(&fdata, &cum_bytes);
3499 /* Process this packet. */
3500 if (print_packet_info) {
3501 /* We're printing packet information; print the information for
3503 print_packet(cf, edt);
3505 /* The ANSI C standard does not appear to *require* that a line-buffered
3506 stream be flushed to the host environment whenever a newline is
3507 written, it just says that, on such a stream, characters "are
3508 intended to be transmitted to or from the host environment as a
3509 block when a new-line character is encountered".
3511 The Visual C++ 6.0 C implementation doesn't do what is intended;
3512 even if you set a stream to be line-buffered, it still doesn't
3513 flush the buffer at the end of every line.
3515 So, if the "-l" flag was specified, we flush the standard output
3516 at the end of a packet. This will do the right thing if we're
3517 printing packet summary lines, and, as we print the entire protocol
3518 tree for a single packet without waiting for anything to happen,
3519 it should be as good as line-buffered mode if we're printing
3520 protocol trees. (The whole reason for the "-l" flag in either
3521 tcpdump or TShark is to allow the output of a live capture to
3522 be piped to a program or script and to have that script see the
3523 information for the packet as soon as it's printed, rather than
3524 having to wait until a standard I/O buffer fills up. */
3528 if (ferror(stdout)) {
3529 show_print_file_io_error(errno);
3534 /* this must be set after print_packet() [bug #8160] */
3535 prev_dis_frame = fdata;
3536 prev_dis = &prev_dis_frame;
3539 prev_cap_frame = fdata;
3540 prev_cap = &prev_cap_frame;
3543 epan_dissect_reset(edt);
3544 frame_data_destroy(&fdata);
3550 write_preamble(capture_file *cf)
3552 switch (output_action) {
3555 return print_preamble(print_stream, cf ? cf->filename : NULL, wireshark_gitversion);
3559 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3561 write_psml_preamble(stdout);
3562 return !ferror(stdout);
3565 write_fields_preamble(output_fields, stdout);
3566 return !ferror(stdout);
3569 g_assert_not_reached();
3575 get_line_buf(size_t len)
3577 static char *line_bufp = NULL;
3578 static size_t line_buf_len = 256;
3579 size_t new_line_buf_len;
3581 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3582 new_line_buf_len *= 2)
3584 if (line_bufp == NULL) {
3585 line_buf_len = new_line_buf_len;
3586 line_bufp = (char *)g_malloc(line_buf_len + 1);
3588 if (new_line_buf_len > line_buf_len) {
3589 line_buf_len = new_line_buf_len;
3590 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3597 put_string(char *dest, const char *str, size_t str_len)
3599 memcpy(dest, str, str_len);
3600 dest[str_len] = '\0';
3604 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3608 for (i = str_len; i < str_with_spaces; i++)
3611 put_string(dest, str, str_len);
3615 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3619 memcpy(dest, str, str_len);
3620 for (i = str_len; i < str_with_spaces; i++)
3623 dest[str_with_spaces] = '\0';
3627 print_columns(capture_file *cf)
3635 line_bufp = get_line_buf(256);
3638 for (i = 0; i < cf->cinfo.num_cols; i++) {
3639 /* Skip columns not marked as visible. */
3640 if (!get_column_visible(i))
3642 switch (cf->cinfo.col_fmt[i]) {
3644 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3647 line_bufp = get_line_buf(buf_offset + column_len);
3648 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3654 case COL_ABS_YMD_TIME: /* XXX - wider */
3655 case COL_ABS_YDOY_TIME: /* XXX - wider */
3657 case COL_UTC_YMD_TIME: /* XXX - wider */
3658 case COL_UTC_YDOY_TIME: /* XXX - wider */
3659 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3660 if (column_len < 10)
3662 line_bufp = get_line_buf(buf_offset + column_len);
3663 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3669 case COL_DEF_DL_SRC:
3670 case COL_RES_DL_SRC:
3671 case COL_UNRES_DL_SRC:
3672 case COL_DEF_NET_SRC:
3673 case COL_RES_NET_SRC:
3674 case COL_UNRES_NET_SRC:
3675 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3676 if (column_len < 12)
3678 line_bufp = get_line_buf(buf_offset + column_len);
3679 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3685 case COL_DEF_DL_DST:
3686 case COL_RES_DL_DST:
3687 case COL_UNRES_DL_DST:
3688 case COL_DEF_NET_DST:
3689 case COL_RES_NET_DST:
3690 case COL_UNRES_NET_DST:
3691 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3692 if (column_len < 12)
3694 line_bufp = get_line_buf(buf_offset + column_len);
3695 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3699 column_len = strlen(cf->cinfo.col_data[i]);
3700 line_bufp = get_line_buf(buf_offset + column_len);
3701 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3704 buf_offset += column_len;
3705 if (i != cf->cinfo.num_cols - 1) {
3707 * This isn't the last column, so we need to print a
3708 * separator between this column and the next.
3710 * If we printed a network source and are printing a
3711 * network destination of the same type next, separate
3712 * them with " -> "; if we printed a network destination
3713 * and are printing a network source of the same type
3714 * next, separate them with " <- "; otherwise separate them
3717 * We add enough space to the buffer for " <- " or " -> ",
3718 * even if we're only adding " ".
3720 line_bufp = get_line_buf(buf_offset + 4);
3721 switch (cf->cinfo.col_fmt[i]) {
3726 switch (cf->cinfo.col_fmt[i + 1]) {
3731 put_string(line_bufp + buf_offset, " -> ", 4);
3736 put_string(line_bufp + buf_offset, " ", 1);
3742 case COL_DEF_DL_SRC:
3743 case COL_RES_DL_SRC:
3744 case COL_UNRES_DL_SRC:
3745 switch (cf->cinfo.col_fmt[i + 1]) {
3747 case COL_DEF_DL_DST:
3748 case COL_RES_DL_DST:
3749 case COL_UNRES_DL_DST:
3750 put_string(line_bufp + buf_offset, " -> ", 4);
3755 put_string(line_bufp + buf_offset, " ", 1);
3761 case COL_DEF_NET_SRC:
3762 case COL_RES_NET_SRC:
3763 case COL_UNRES_NET_SRC:
3764 switch (cf->cinfo.col_fmt[i + 1]) {
3766 case COL_DEF_NET_DST:
3767 case COL_RES_NET_DST:
3768 case COL_UNRES_NET_DST:
3769 put_string(line_bufp + buf_offset, " -> ", 4);
3774 put_string(line_bufp + buf_offset, " ", 1);
3783 switch (cf->cinfo.col_fmt[i + 1]) {
3788 put_string(line_bufp + buf_offset, " <- ", 4);
3793 put_string(line_bufp + buf_offset, " ", 1);
3799 case COL_DEF_DL_DST:
3800 case COL_RES_DL_DST:
3801 case COL_UNRES_DL_DST:
3802 switch (cf->cinfo.col_fmt[i + 1]) {
3804 case COL_DEF_DL_SRC:
3805 case COL_RES_DL_SRC:
3806 case COL_UNRES_DL_SRC:
3807 put_string(line_bufp + buf_offset, " <- ", 4);
3812 put_string(line_bufp + buf_offset, " ", 1);
3818 case COL_DEF_NET_DST:
3819 case COL_RES_NET_DST:
3820 case COL_UNRES_NET_DST:
3821 switch (cf->cinfo.col_fmt[i + 1]) {
3823 case COL_DEF_NET_SRC:
3824 case COL_RES_NET_SRC:
3825 case COL_UNRES_NET_SRC:
3826 put_string(line_bufp + buf_offset, " <- ", 4);
3831 put_string(line_bufp + buf_offset, " ", 1);
3838 put_string(line_bufp + buf_offset, " ", 1);
3844 return print_line(print_stream, 0, line_bufp);
3848 print_packet(capture_file *cf, epan_dissect_t *edt)
3850 print_args_t print_args;
3852 if (print_summary || output_fields_has_cols(output_fields)) {
3853 /* Just fill in the columns. */
3854 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3856 if (print_summary) {
3857 /* Now print them. */
3858 switch (output_action) {
3861 if (!print_columns(cf))
3866 proto_tree_write_psml(edt, stdout);
3867 return !ferror(stdout);
3868 case WRITE_FIELDS: /*No non-verbose "fields" format */
3869 g_assert_not_reached();
3874 if (print_details) {
3875 /* Print the information in the protocol tree. */
3876 switch (output_action) {
3879 /* Only initialize the fields that are actually used in proto_tree_print.
3880 * This is particularly important for .range, as that's heap memory which
3881 * we would otherwise have to g_free().
3882 print_args.to_file = TRUE;
3883 print_args.format = print_format;
3884 print_args.print_summary = print_summary;
3885 print_args.print_formfeed = FALSE;
3886 packet_range_init(&print_args.range, &cfile);
3888 print_args.print_hex = print_hex;
3889 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3891 if (!proto_tree_print(&print_args, edt, print_stream))
3894 if (!print_line(print_stream, 0, separator))
3900 proto_tree_write_pdml(edt, stdout);
3902 return !ferror(stdout);
3904 proto_tree_write_fields(output_fields, edt, &cf->cinfo, stdout);
3906 return !ferror(stdout);
3910 if (print_summary || print_details) {
3911 if (!print_line(print_stream, 0, ""))
3914 if (!print_hex_data(print_stream, edt))
3916 if (!print_line(print_stream, 0, separator))
3925 switch (output_action) {
3928 return print_finale(print_stream);
3932 write_pdml_finale(stdout);
3934 write_psml_finale(stdout);
3935 return !ferror(stdout);
3938 write_fields_finale(output_fields, stdout);
3939 return !ferror(stdout);
3942 g_assert_not_reached();
3948 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3952 char err_msg[2048+1];
3954 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3958 /* The open succeeded. Fill in the information for this file. */
3960 /* Create new epan session for dissection. */
3961 epan_free(cf->epan);
3962 cf->epan = tshark_epan_new(cf);
3965 cf->f_datalen = 0; /* not used, but set it anyway */
3967 /* Set the file name because we need it to set the follow stream filter.
3968 XXX - is that still true? We need it for other reasons, though,
3970 cf->filename = g_strdup(fname);
3972 /* Indicate whether it's a permanent or temporary file. */
3973 cf->is_tempfile = is_tempfile;
3975 /* No user changes yet. */
3976 cf->unsaved_changes = FALSE;
3978 cf->cd_t = wtap_file_type_subtype(cf->wth);
3980 cf->drops_known = FALSE;
3982 cf->snap = wtap_snapshot_length(cf->wth);
3983 if (cf->snap == 0) {
3984 /* Snapshot length not known. */
3985 cf->has_snap = FALSE;
3986 cf->snap = WTAP_MAX_PACKET_SIZE;
3988 cf->has_snap = TRUE;
3989 nstime_set_zero(&cf->elapsed_time);
3994 cf->state = FILE_READ_IN_PROGRESS;
3996 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3997 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4002 g_snprintf(err_msg, sizeof err_msg,
4003 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4004 cmdarg_err("%s", err_msg);
4009 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4011 char *save_file_string;
4013 save_file_string = output_file_description(fname);
4018 cmdarg_err("Not all the packets could be written to the %s because there is "
4019 "no space left on the file system.",
4025 cmdarg_err("Not all the packets could be written to the %s because you are "
4026 "too close to, or over your disk quota.",
4031 case WTAP_ERR_CANT_CLOSE:
4032 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4036 case WTAP_ERR_SHORT_WRITE:
4037 cmdarg_err("Not all the packets could be written to the %s.",
4043 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4044 wtap_strerror(err));
4046 cmdarg_err("An error occurred while writing to the %s: %s.",
4047 save_file_string, wtap_strerror(err));
4051 g_free(save_file_string);
4055 show_print_file_io_error(int err)
4060 cmdarg_err("Not all the packets could be printed because there is "
4061 "no space left on the file system.");
4066 cmdarg_err("Not all the packets could be printed because you are "
4067 "too close to, or over your disk quota.");
4072 cmdarg_err("An error occurred while printing packets: %s.",
4079 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4083 static char errmsg_errno[1024+1];
4086 /* Wiretap error. */
4089 case WTAP_ERR_NOT_REGULAR_FILE:
4090 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4093 case WTAP_ERR_RANDOM_OPEN_PIPE:
4094 /* Seen only when opening a capture file for reading. */
4095 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4098 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4099 /* Seen only when opening a capture file for reading. */
4100 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4103 case WTAP_ERR_UNSUPPORTED:
4104 /* Seen only when opening a capture file for reading. */
4105 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4106 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
4109 errmsg = errmsg_errno;
4112 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4113 /* Seen only when opening a capture file for writing. */
4114 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4115 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4116 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4117 errmsg = errmsg_errno;
4120 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4121 /* Seen only when opening a capture file for writing. */
4122 errmsg = "TShark doesn't support writing capture files in that format.";
4125 case WTAP_ERR_UNSUPPORTED_ENCAP:
4127 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4128 "TShark can't save this capture as a \"%s\" file.",
4129 wtap_file_type_subtype_short_string(file_type));
4131 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4132 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
4136 errmsg = errmsg_errno;
4139 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4141 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4142 "TShark can't save this capture as a \"%s\" file.",
4143 wtap_file_type_subtype_short_string(file_type));
4144 errmsg = errmsg_errno;
4146 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4149 case WTAP_ERR_BAD_FILE:
4150 /* Seen only when opening a capture file for reading. */
4151 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4152 "The file \"%%s\" appears to be damaged or corrupt.\n"
4155 errmsg = errmsg_errno;
4158 case WTAP_ERR_CANT_OPEN:
4160 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4162 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4165 case WTAP_ERR_SHORT_READ:
4166 errmsg = "The file \"%s\" appears to have been cut short"
4167 " in the middle of a packet or other data.";
4170 case WTAP_ERR_SHORT_WRITE:
4171 errmsg = "A full header couldn't be written to the file \"%s\".";
4174 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4175 errmsg = "This file type cannot be written as a compressed file.";
4178 case WTAP_ERR_DECOMPRESS:
4179 /* Seen only when opening a capture file for reading. */
4180 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4181 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4184 errmsg = errmsg_errno;
4188 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4189 "The file \"%%s\" could not be %s: %s.",
4190 for_writing ? "created" : "opened",
4191 wtap_strerror(err));
4192 errmsg = errmsg_errno;
4196 errmsg = file_open_error_message(err, for_writing);
4201 * Open/create errors are reported with an console message in TShark.
4204 open_failure_message(const char *filename, int err, gboolean for_writing)
4206 fprintf(stderr, "tshark: ");
4207 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4208 fprintf(stderr, "\n");
4213 * General errors are reported with an console message in TShark.
4216 failure_message(const char *msg_format, va_list ap)
4218 fprintf(stderr, "tshark: ");
4219 vfprintf(stderr, msg_format, ap);
4220 fprintf(stderr, "\n");
4224 * Read errors are reported with an console message in TShark.
4227 read_failure_message(const char *filename, int err)
4229 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4230 filename, g_strerror(err));
4234 * Write errors are reported with an console message in TShark.
4237 write_failure_message(const char *filename, int err)
4239 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4240 filename, g_strerror(err));
4244 * Report an error in command-line arguments.
4247 cmdarg_err(const char *fmt, ...)
4252 failure_message(fmt, ap);
4257 * Report additional information for an error in command-line arguments.
4260 cmdarg_err_cont(const char *fmt, ...)
4265 vfprintf(stderr, fmt, ap);
4266 fprintf(stderr, "\n");
4272 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4277 * indent-tabs-mode: nil
4280 * vi: set shiftwidth=2 tabstop=8 expandtab:
4281 * :indentSize=2:tabSize=8:noTabs=true: