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_svnversion, 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 pipes or 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_svnversion);
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_svnversion, 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_svnversion, 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 if (strcmp(optarg, "text") == 0) {
1497 output_action = WRITE_TEXT;
1498 print_format = PR_FMT_TEXT;
1499 } else if (strcmp(optarg, "ps") == 0) {
1500 output_action = WRITE_TEXT;
1501 print_format = PR_FMT_PS;
1502 } else if (strcmp(optarg, "pdml") == 0) {
1503 output_action = WRITE_XML;
1504 print_details = TRUE; /* Need details */
1505 print_summary = FALSE; /* Don't allow summary */
1506 } else if (strcmp(optarg, "psml") == 0) {
1507 output_action = WRITE_XML;
1508 print_details = FALSE; /* Don't allow details */
1509 print_summary = TRUE; /* Need summary */
1510 } else if (strcmp(optarg, "fields") == 0) {
1511 output_action = WRITE_FIELDS;
1512 print_details = TRUE; /* Need full tree info */
1513 print_summary = FALSE; /* Don't allow summary */
1515 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1516 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1517 "\t specified by the -E option.\n"
1518 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1519 "\t details of a decoded packet. This information is equivalent to\n"
1520 "\t the packet details printed with the -V flag.\n"
1521 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1522 "\t the packets, or a multi-line view of the details of each of\n"
1523 "\t the packets, depending on whether the -V flag was specified.\n"
1524 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1525 "\t summary information of a decoded packet. This information is\n"
1526 "\t equivalent to the information shown in the one-line summary\n"
1527 "\t printed by default.\n"
1528 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1529 "\t packets, or a multi-line view of the details of each of the\n"
1530 "\t packets, depending on whether the -V flag was specified.\n"
1531 "\t This is the default.");
1535 case 'u': /* Seconds type */
1536 if (strcmp(optarg, "s") == 0)
1537 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1538 else if (strcmp(optarg, "hms") == 0)
1539 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1541 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1542 cmdarg_err_cont("\t\"s\" for seconds\n"
1543 "\t\"hms\" for hours, minutes and seconds");
1547 case 'v': /* Show version and exit */
1549 show_version(comp_info_str, runtime_info_str);
1550 g_string_free(comp_info_str, TRUE);
1551 g_string_free(runtime_info_str, TRUE);
1552 /* We don't really have to cleanup here, but it's a convenient way to test
1553 * start-up and shut-down of the epan library without any UI-specific
1554 * cruft getting in the way. Makes the results of running
1555 * $ ./tools/valgrind-wireshark -n
1556 * much more useful. */
1560 case 'O': /* Only output these protocols */
1561 /* already processed; just ignore it now */
1563 case 'V': /* Verbose */
1564 /* already processed; just ignore it now */
1566 case 'x': /* Print packet data in hex (and ASCII) */
1567 /* already processed; just ignore it now */
1575 /* We won't call the init function for the stat this soon
1576 as it would disallow MATE's fields (which are registered
1577 by the preferences set callback) from being used as
1578 part of a tap filter. Instead, we just add the argument
1579 to a list of stat arguments. */
1580 if (!process_stat_cmd_arg(optarg)) {
1581 if (strcmp("help", optarg)==0) {
1582 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1583 list_stat_cmd_args();
1586 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1587 list_stat_cmd_args();
1592 case '?': /* Bad flag - print usage message */
1595 list_capture_types();
1605 /* If we specified output fields, but not the output field type... */
1606 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1607 cmdarg_err("Output fields were specified with \"-e\", "
1608 "but \"-Tfields\" was not specified.");
1610 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1611 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1612 "specified with \"-e\".");
1617 /* If no capture filter or display filter has been specified, and there are
1618 still command-line arguments, treat them as the tokens of a capture
1619 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1620 flag was specified. */
1621 if (optind < argc) {
1622 if (cf_name != NULL) {
1623 if (dfilter != NULL) {
1624 cmdarg_err("Display filters were specified both with \"-d\" "
1625 "and with additional command-line arguments.");
1628 dfilter = get_args_as_string(argc, argv, optind);
1633 if (global_capture_opts.default_options.cfilter) {
1634 cmdarg_err("A default capture filter was specified both with \"-f\""
1635 " and with additional command-line arguments.");
1638 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1639 interface_options interface_opts;
1640 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1641 if (interface_opts.cfilter == NULL) {
1642 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1643 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1644 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1646 cmdarg_err("A capture filter was specified both with \"-f\""
1647 " and with additional command-line arguments.");
1651 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1653 capture_option_specified = TRUE;
1659 if (!global_capture_opts.saving_to_file) {
1660 /* We're not saving the capture to a file; if "-q" wasn't specified,
1661 we should print packet information */
1663 print_packet_info = TRUE;
1665 /* We're saving to a file; if we're writing to the standard output.
1666 and we'll also be writing dissected packets to the standard
1667 output, reject the request. At best, we could redirect that
1668 to the standard error; we *can't* write both to the standard
1669 output and have either of them be useful. */
1670 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1671 cmdarg_err("You can't write both raw packet data and dissected packets"
1672 " to the standard output.");
1677 /* We're not saving the capture to a file; if "-q" wasn't specified,
1678 we should print packet information */
1680 print_packet_info = TRUE;
1683 #ifndef HAVE_LIBPCAP
1684 if (capture_option_specified)
1685 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1693 if (output_action != WRITE_TEXT) {
1694 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1699 if (output_only != NULL) {
1702 if (!print_details) {
1703 cmdarg_err("-O requires -V");
1707 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1708 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1709 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1713 if (rfilter != NULL && !perform_two_pass_analysis) {
1714 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1719 if (list_link_layer_types) {
1720 /* We're supposed to list the link-layer types for an interface;
1721 did the user also specify a capture file to be read? */
1723 /* Yes - that's bogus. */
1724 cmdarg_err("You can't specify -L and a capture file to be read.");
1727 /* No - did they specify a ring buffer option? */
1728 if (global_capture_opts.multi_files_on) {
1729 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1735 * "-r" was specified, so we're reading a capture file.
1736 * Capture options don't apply here.
1739 /* We don't support capture filters when reading from a capture file
1740 (the BPF compiler doesn't support all link-layer types that we
1741 support in capture files we read). */
1742 if (global_capture_opts.default_options.cfilter) {
1743 cmdarg_err("Only read filters, not capture filters, "
1744 "can be specified when reading a capture file.");
1747 if (global_capture_opts.multi_files_on) {
1748 cmdarg_err("Multiple capture files requested, but "
1749 "a capture isn't being done.");
1752 if (global_capture_opts.has_file_duration) {
1753 cmdarg_err("Switching capture files after a time interval was specified, but "
1754 "a capture isn't being done.");
1757 if (global_capture_opts.has_ring_num_files) {
1758 cmdarg_err("A ring buffer of capture files was specified, but "
1759 "a capture isn't being done.");
1762 if (global_capture_opts.has_autostop_files) {
1763 cmdarg_err("A maximum number of capture files was specified, but "
1764 "a capture isn't being done.");
1767 if (global_capture_opts.capture_comment) {
1768 cmdarg_err("A capture comment was specified, but "
1769 "a capture isn't being done.\nThere's no support for adding "
1770 "a capture comment to an existing capture file.");
1774 /* Note: TShark now allows the restriction of a _read_ file by packet count
1775 * and byte count as well as a write file. Other autostop options remain valid
1776 * only for a write file.
1778 if (global_capture_opts.has_autostop_duration) {
1779 cmdarg_err("A maximum capture time was specified, but "
1780 "a capture isn't being done.");
1785 * "-r" wasn't specified, so we're doing a live capture.
1787 if (perform_two_pass_analysis) {
1788 /* Two-pass analysis doesn't work with live capture since it requires us
1789 * to buffer packets until we've read all of them, but a live capture
1790 * has no useful/meaningful definition of "all" */
1791 cmdarg_err("Live captures do not support two-pass analysis.");
1795 if (global_capture_opts.saving_to_file) {
1796 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1798 /* When capturing, we only support writing pcap or pcap-ng format. */
1799 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1800 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1801 cmdarg_err("Live captures can only be saved in libpcap format.");
1804 if (global_capture_opts.capture_comment &&
1805 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1806 cmdarg_err("A capture comment can only be written to a pcapng file.");
1809 if (global_capture_opts.multi_files_on) {
1810 /* Multiple-file mode doesn't work under certain conditions:
1811 a) it doesn't work if you're writing to the standard output;
1812 b) it doesn't work if you're writing to a pipe;
1814 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1815 cmdarg_err("Multiple capture files requested, but "
1816 "the capture is being written to the standard output.");
1819 if (global_capture_opts.output_to_pipe) {
1820 cmdarg_err("Multiple capture files requested, but "
1821 "the capture file is a pipe.");
1824 if (!global_capture_opts.has_autostop_filesize &&
1825 !global_capture_opts.has_file_duration) {
1826 cmdarg_err("Multiple capture files requested, but "
1827 "no maximum capture file size or duration was specified.");
1831 /* Currently, we don't support read or display filters when capturing
1832 and saving the packets. */
1833 if (rfilter != NULL) {
1834 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1837 if (dfilter != NULL) {
1838 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1842 /* They didn't specify a "-w" flag, so we won't be saving to a
1843 capture file. Check for options that only make sense if
1844 we're saving to a file. */
1845 if (global_capture_opts.has_autostop_filesize) {
1846 cmdarg_err("Maximum capture file size specified, but "
1847 "capture isn't being saved to a file.");
1850 if (global_capture_opts.multi_files_on) {
1851 cmdarg_err("Multiple capture files requested, but "
1852 "the capture isn't being saved to a file.");
1855 if (global_capture_opts.capture_comment) {
1856 cmdarg_err("A capture comment was specified, but "
1857 "the capture isn't being saved to a file.");
1866 /* Start windows sockets */
1867 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1870 /* Notify all registered modules that have had any of their preferences
1871 changed either from one of the preferences file or from the command
1872 line that their preferences have changed. */
1875 /* At this point MATE will have registered its field array so we can
1876 have a tap filter with one of MATE's late-registered fields as part
1877 of the filter. We can now process all the "-z" arguments. */
1878 start_requested_stats();
1881 /* We currently don't support taps, or printing dissected packets,
1882 if we're writing to a pipe. */
1883 if (global_capture_opts.saving_to_file &&
1884 global_capture_opts.output_to_pipe) {
1885 if (tap_listeners_require_dissection()) {
1886 cmdarg_err("Taps aren't supported when saving to a pipe.");
1889 if (print_packet_info) {
1890 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1896 /* disabled protocols as per configuration file */
1897 if (gdp_path == NULL && dp_path == NULL) {
1898 set_disabled_protos_list();
1901 /* Build the column format array */
1902 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1905 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1906 capture_opts_trim_ring_num_files(&global_capture_opts);
1909 if (rfilter != NULL) {
1910 if (!dfilter_compile(rfilter, &rfcode)) {
1911 cmdarg_err("%s", dfilter_error_msg);
1913 #ifdef HAVE_PCAP_OPEN_DEAD
1917 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1919 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1921 " Note: That read filter code looks like a valid capture filter;\n"
1922 " maybe you mixed them up?");
1931 cfile.rfcode = rfcode;
1933 if (dfilter != NULL) {
1934 if (!dfilter_compile(dfilter, &dfcode)) {
1935 cmdarg_err("%s", dfilter_error_msg);
1937 #ifdef HAVE_PCAP_OPEN_DEAD
1941 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1943 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1945 " Note: That display filter code looks like a valid capture filter;\n"
1946 " maybe you mixed them up?");
1955 cfile.dfcode = dfcode;
1957 if (print_packet_info) {
1958 /* If we're printing as text or PostScript, we have
1959 to create a print stream. */
1960 if (output_action == WRITE_TEXT) {
1961 switch (print_format) {
1964 print_stream = print_stream_text_stdio_new(stdout);
1968 print_stream = print_stream_ps_stdio_new(stdout);
1972 g_assert_not_reached();
1977 /* We have to dissect each packet if:
1979 we're printing information about each packet;
1981 we're using a read filter on the packets;
1983 we're using a display filter on the packets;
1985 we're using any taps that need dissection. */
1986 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
1990 * We're reading a capture file.
1994 * Immediately relinquish any special privileges we have; we must not
1995 * be allowed to read any capture files the user running TShark
1998 relinquish_special_privs_perm();
1999 print_current_user();
2001 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
2006 /* Set timestamp precision; there should arguably be a command-line
2007 option to let the user set this. */
2008 switch(wtap_file_tsprecision(cfile.wth)) {
2009 case(WTAP_FILE_TSPREC_SEC):
2010 timestamp_set_precision(TS_PREC_AUTO_SEC);
2012 case(WTAP_FILE_TSPREC_DSEC):
2013 timestamp_set_precision(TS_PREC_AUTO_DSEC);
2015 case(WTAP_FILE_TSPREC_CSEC):
2016 timestamp_set_precision(TS_PREC_AUTO_CSEC);
2018 case(WTAP_FILE_TSPREC_MSEC):
2019 timestamp_set_precision(TS_PREC_AUTO_MSEC);
2021 case(WTAP_FILE_TSPREC_USEC):
2022 timestamp_set_precision(TS_PREC_AUTO_USEC);
2024 case(WTAP_FILE_TSPREC_NSEC):
2025 timestamp_set_precision(TS_PREC_AUTO_NSEC);
2028 g_assert_not_reached();
2031 /* Process the packets in the file */
2034 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2035 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2036 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2038 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
2041 CATCH(OutOfMemoryError) {
2045 "Sorry, but TShark has to terminate now!\n"
2047 "Some infos / workarounds can be found at:\n"
2048 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2053 /* We still dump out the results of taps, etc., as we might have
2054 read some packets; however, we exit with an error status. */
2058 /* No capture file specified, so we're supposed to do a live capture
2059 or get a list of link-layer types for a live capture device;
2060 do we have support for live captures? */
2062 /* if no interface was specified, pick a default */
2063 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2064 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2065 if (exit_status != 0)
2068 /* if requested, list the link layer types and exit */
2069 if (list_link_layer_types) {
2072 /* Get the list of link-layer types for the capture devices. */
2073 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2074 interface_options interface_opts;
2075 if_capabilities_t *caps;
2077 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2078 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2080 cmdarg_err("%s", err_str);
2084 if (caps->data_link_types == NULL) {
2085 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2088 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2089 free_if_capabilities(caps);
2095 * If the standard error isn't a terminal, don't print packet counts,
2096 * as they won't show up on the user's terminal and they'll get in
2097 * the way of error messages in the file (to which we assume the
2098 * standard error was redirected; if it's redirected to the null
2099 * device, there's no point in printing packet counts anyway).
2101 * Otherwise, if we're printing packet information and the standard
2102 * output is a terminal (which we assume means the standard output and
2103 * error are going to the same terminal), don't print packet counts,
2104 * as they'll get in the way of the packet information.
2106 * Otherwise, if the user specified -q, don't print packet counts.
2108 * Otherwise, print packet counts.
2110 * XXX - what if the user wants to do a live capture, doesn't want
2111 * to save it to a file, doesn't want information printed for each
2112 * packet, does want some "-z" statistic, and wants packet counts
2113 * so they know whether they're seeing any packets? -q will
2114 * suppress the information printed for each packet, but it'll
2115 * also suppress the packet counts.
2117 if (!isatty(fileno(stderr)))
2118 print_packet_counts = FALSE;
2119 else if (print_packet_info && isatty(fileno(stdout)))
2120 print_packet_counts = FALSE;
2122 print_packet_counts = FALSE;
2124 print_packet_counts = TRUE;
2126 if (print_packet_info) {
2127 if (!write_preamble(NULL)) {
2128 show_print_file_io_error(errno);
2133 /* For now, assume libpcap gives microsecond precision. */
2134 timestamp_set_precision(TS_PREC_AUTO_USEC);
2137 * XXX - this returns FALSE if an error occurred, but it also
2138 * returns FALSE if the capture stops because a time limit
2139 * was reached (and possibly other limits), so we can't assume
2140 * it means an error.
2142 * The capture code is a bit twisty, so it doesn't appear to
2143 * be an easy fix. We just ignore the return value for now.
2144 * Instead, pass on the exit status from the capture child.
2147 exit_status = global_capture_session.fork_child_status;
2149 if (print_packet_info) {
2150 if (!write_finale()) {
2152 show_print_file_io_error(err);
2156 /* No - complain. */
2157 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2164 if (cfile.frames != NULL) {
2165 free_frame_data_sequence(cfile.frames);
2166 cfile.frames = NULL;
2169 draw_tap_listeners(TRUE);
2170 funnel_dump_all_text_windows();
2171 epan_free(cfile.epan);
2174 output_fields_free(output_fields);
2175 output_fields = NULL;
2180 /*#define USE_BROKEN_G_MAIN_LOOP*/
2182 #ifdef USE_BROKEN_G_MAIN_LOOP
2185 gboolean loop_running = FALSE;
2187 guint32 packet_count = 0;
2190 typedef struct pipe_input_tag {
2194 pipe_input_cb_t input_cb;
2195 guint pipe_input_id;
2197 GMutex *callback_running;
2201 static pipe_input_t pipe_input;
2204 /* The timer has expired, see if there's stuff to read from the pipe,
2205 if so, do the callback */
2207 pipe_timer_cb(gpointer data)
2213 pipe_input_t *pipe_input_p = data;
2214 gint iterations = 0;
2216 g_mutex_lock (pipe_input_p->callback_running);
2218 /* try to read data from the pipe only 5 times, to avoid blocking */
2219 while(iterations < 5) {
2220 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2222 /* Oddly enough although Named pipes don't work on win9x,
2223 PeekNamedPipe does !!! */
2224 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2225 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2227 /* Get the child process exit status */
2228 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2231 /* If the Peek returned an error, or there are bytes to be read
2232 or the childwatcher thread has terminated then call the normal
2234 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2236 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2238 /* And call the real handler */
2239 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2240 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2241 /* pipe closed, return false so that the timer is stopped */
2242 g_mutex_unlock (pipe_input_p->callback_running);
2247 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2248 /* No data, stop now */
2255 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2257 g_mutex_unlock (pipe_input_p->callback_running);
2259 /* we didn't stopped the timer, so let it run */
2266 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2269 pipe_input.source = source;
2270 pipe_input.child_process = child_process;
2271 pipe_input.user_data = user_data;
2272 pipe_input.input_cb = input_cb;
2275 #if GLIB_CHECK_VERSION(2,31,0)
2276 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2277 g_mutex_init(pipe_input.callback_running);
2279 pipe_input.callback_running = g_mutex_new();
2281 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2282 do this but that doesn't cover all win32 platforms. GTK can do
2283 this but doesn't seem to work over processes. Attempt to do
2284 something similar here, start a timer and check for data on every
2286 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2287 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2291 static const nstime_t *
2292 tshark_get_frame_ts(void *data, guint32 frame_num)
2294 capture_file *cf = (capture_file *) data;
2296 if (ref && ref->num == frame_num)
2297 return &ref->abs_ts;
2299 if (prev_dis && prev_dis->num == frame_num)
2300 return &prev_dis->abs_ts;
2302 if (prev_cap && prev_cap->num == frame_num)
2303 return &prev_cap->abs_ts;
2306 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2308 return (fd) ? &fd->abs_ts : NULL;
2315 tshark_epan_new(capture_file *cf)
2317 epan_t *epan = epan_new();
2320 epan->get_frame_ts = tshark_get_frame_ts;
2321 epan->get_interface_name = cap_file_get_interface_name;
2322 epan->get_user_comment = NULL;
2333 GString *str = g_string_new("");
2334 #ifdef USE_TSHARK_SELECT
2338 struct sigaction action, oldaction;
2342 * XXX - dropping privileges is still required, until code cleanup is done
2344 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2345 * when it's done, we don't need special privileges to run tshark at all,
2346 * therefore we don't need to drop these privileges
2347 * The only thing we might want to keep is a warning if tshark is run as root,
2348 * as it's no longer necessary and potentially dangerous.
2350 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2351 * We've opened the capture device, so we shouldn't need any special
2352 * privileges any more; relinquish those privileges.
2354 * XXX - if we have saved set-user-ID support, we should give up those
2355 * privileges immediately, and then reclaim them long enough to get
2356 * a list of network interfaces and to open one, and then give them
2357 * up again, so that stuff we do while processing the argument list,
2358 * reading the user's preferences, loading and starting plugins
2359 * (especially *user* plugins), etc. is done with the user's privileges,
2360 * not special privileges.
2362 relinquish_special_privs_perm();
2363 print_current_user();
2365 /* Create new dissection section. */
2366 epan_free(cfile.epan);
2367 cfile.epan = tshark_epan_new(&cfile);
2370 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2371 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2373 /* Catch SIGINT and SIGTERM and, if we get either of them,
2374 clean up and exit. If SIGHUP isn't being ignored, catch
2375 it too and, if we get it, clean up and exit.
2377 We restart any read that was in progress, so that it doesn't
2378 disrupt reading from the sync pipe. The signal handler tells
2379 the capture child to finish; it will report that it finished,
2380 or will exit abnormally, so we'll stop reading from the sync
2381 pipe, pick up the exit status, and quit. */
2382 memset(&action, 0, sizeof(action));
2383 action.sa_handler = capture_cleanup;
2384 action.sa_flags = SA_RESTART;
2385 sigemptyset(&action.sa_mask);
2386 sigaction(SIGTERM, &action, NULL);
2387 sigaction(SIGINT, &action, NULL);
2388 sigaction(SIGHUP, NULL, &oldaction);
2389 if (oldaction.sa_handler == SIG_DFL)
2390 sigaction(SIGHUP, &action, NULL);
2393 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2394 quiet mode, report the number of packets we've captured.
2396 Again, restart any read that was in progress, so that it doesn't
2397 disrupt reading from the sync pipe. */
2398 action.sa_handler = report_counts_siginfo;
2399 action.sa_flags = SA_RESTART;
2400 sigemptyset(&action.sa_mask);
2401 sigaction(SIGINFO, &action, NULL);
2402 #endif /* SIGINFO */
2405 global_capture_session.state = CAPTURE_PREPARING;
2407 /* Let the user know which interfaces were chosen. */
2408 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2409 interface_options interface_opts;
2411 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2412 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2413 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2414 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2417 if (global_capture_opts.ifaces->len < 2)
2419 if (global_capture_opts.ifaces->len < 4)
2422 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2423 interface_options interface_opts;
2425 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2427 if (global_capture_opts.ifaces->len > 2) {
2428 g_string_append_printf(str, ",");
2430 g_string_append_printf(str, " ");
2431 if (i == global_capture_opts.ifaces->len - 1) {
2432 g_string_append_printf(str, "and ");
2435 g_string_append_printf(str, "'%s'", interface_opts.descr);
2438 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2440 if (really_quiet == FALSE)
2441 fprintf(stderr, "Capturing on %s\n", str->str);
2443 g_string_free(str, TRUE);
2445 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2450 /* the actual capture loop
2452 * XXX - glib doesn't seem to provide any event based loop handling.
2454 * XXX - for whatever reason,
2455 * calling g_main_loop_new() ends up in 100% cpu load.
2457 * But that doesn't matter: in UNIX we can use select() to find an input
2458 * source with something to do.
2460 * But that doesn't matter because we're in a CLI (that doesn't need to
2461 * update a GUI or something at the same time) so it's OK if we block
2462 * trying to read from the pipe.
2464 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2465 * wrong (but I leave it there in case I am...).
2468 #ifdef USE_TSHARK_SELECT
2470 FD_SET(pipe_input.source, &readfds);
2473 loop_running = TRUE;
2477 while (loop_running)
2479 #ifdef USE_TSHARK_SELECT
2480 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2486 } else if (ret == 1) {
2488 /* Call the real handler */
2489 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2490 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2493 #ifdef USE_TSHARK_SELECT
2498 CATCH(OutOfMemoryError) {
2502 "Sorry, but TShark has to terminate now!\n"
2504 "Some infos / workarounds can be found at:\n"
2505 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2512 /* capture child detected an error */
2514 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2516 cmdarg_err("%s", error_msg);
2517 cmdarg_err_cont("%s", secondary_error_msg);
2521 /* capture child detected an capture filter related error */
2523 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2525 capture_options *capture_opts = cap_session->capture_opts;
2526 dfilter_t *rfcode = NULL;
2527 interface_options interface_opts;
2529 g_assert(i < capture_opts->ifaces->len);
2530 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2532 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2534 "Invalid capture filter \"%s\" for interface '%s'!\n"
2536 "That string looks like a valid display filter; however, it isn't a valid\n"
2537 "capture filter (%s).\n"
2539 "Note that display filters and capture filters don't have the same syntax,\n"
2540 "so you can't use most display filter expressions as capture filters.\n"
2542 "See the User's Guide for a description of the capture filter syntax.",
2543 interface_opts.cfilter, interface_opts.descr, error_message);
2544 dfilter_free(rfcode);
2547 "Invalid capture filter \"%s\" for interface '%s'!\n"
2549 "That string isn't a valid capture filter (%s).\n"
2550 "See the User's Guide for a description of the capture filter syntax.",
2551 interface_opts.cfilter, interface_opts.descr, error_message);
2556 /* capture child tells us we have a new (or the first) capture file */
2558 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2560 capture_options *capture_opts = cap_session->capture_opts;
2561 gboolean is_tempfile;
2564 if (cap_session->state == CAPTURE_PREPARING) {
2565 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2567 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2569 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2571 /* free the old filename */
2572 if (capture_opts->save_file != NULL) {
2574 /* we start a new capture file, close the old one (if we had one before) */
2575 if ( ((capture_file *) cap_session->cf)->state != FILE_CLOSED) {
2576 if ( ((capture_file *) cap_session->cf)->wth != NULL) {
2577 wtap_close(((capture_file *) cap_session->cf)->wth);
2578 ((capture_file *) cap_session->cf)->wth = NULL;
2580 ((capture_file *) cap_session->cf)->state = FILE_CLOSED;
2583 g_free(capture_opts->save_file);
2584 is_tempfile = FALSE;
2586 /* we didn't had a save_file before, must be a tempfile */
2590 /* save the new filename */
2591 capture_opts->save_file = g_strdup(new_file);
2593 /* if we are in real-time mode, open the new file now */
2594 if (do_dissection) {
2595 /* Attempt to open the capture file and set up to read from it. */
2596 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, is_tempfile, &err)) {
2600 /* Don't unlink (delete) the save file - leave it around,
2601 for debugging purposes. */
2602 g_free(capture_opts->save_file);
2603 capture_opts->save_file = NULL;
2608 cap_session->state = CAPTURE_RUNNING;
2614 /* capture child tells us we have new packets to read */
2616 capture_input_new_packets(capture_session *cap_session, int to_read)
2622 capture_file *cf = (capture_file *)cap_session->cf;
2623 gboolean filtering_tap_listeners;
2628 * Prevent a SIGINFO handler from writing to the standard error while
2629 * we're doing so or writing to the standard output; instead, have it
2630 * just set a flag telling us to print that information when we're done.
2633 #endif /* SIGINFO */
2635 /* Do we have any tap listeners with filters? */
2636 filtering_tap_listeners = have_filtering_tap_listeners();
2638 /* Get the union of the flags for all tap listeners. */
2639 tap_flags = union_of_tap_listener_flags();
2641 if (do_dissection) {
2642 gboolean create_proto_tree;
2643 epan_dissect_t *edt;
2645 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2646 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2647 create_proto_tree = TRUE;
2649 create_proto_tree = FALSE;
2651 /* The protocol tree will be "visible", i.e., printed, only if we're
2652 printing packet details, which is true if we're printing stuff
2653 ("print_packet_info" is true) and we're in verbose mode
2654 ("packet_details" is true). */
2655 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2657 while (to_read-- && cf->wth) {
2658 wtap_cleareof(cf->wth);
2659 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2661 /* read from file failed, tell the capture child to stop */
2662 sync_pipe_stop(cap_session);
2663 wtap_close(cf->wth);
2666 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2667 wtap_buf_ptr(cf->wth),
2671 /* packet successfully read and gone through the "Read Filter" */
2676 epan_dissect_free(edt);
2680 * Dumpcap's doing all the work; we're not doing any dissection.
2681 * Count all the packets it wrote.
2683 packet_count += to_read;
2686 if (print_packet_counts) {
2687 /* We're printing packet counts. */
2688 if (packet_count != 0) {
2689 fprintf(stderr, "\r%u ", packet_count);
2690 /* stderr could be line buffered */
2697 * Allow SIGINFO handlers to write.
2702 * If a SIGINFO handler asked us to write out capture counts, do so.
2706 #endif /* SIGINFO */
2712 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2713 /* Report the count only if we aren't printing a packet count
2714 as packets arrive. */
2715 fprintf(stderr, "%u packet%s captured\n", packet_count,
2716 plurality(packet_count, "", "s"));
2719 infoprint = FALSE; /* we just reported it */
2720 #endif /* SIGINFO */
2725 report_counts_siginfo(int signum _U_)
2727 int sav_errno = errno;
2728 /* If we've been told to delay printing, just set a flag asking
2729 that we print counts (if we're supposed to), otherwise print
2730 the count of packets captured (if we're supposed to). */
2737 #endif /* SIGINFO */
2740 /* capture child detected any packet drops? */
2742 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2744 if (print_packet_counts) {
2745 /* We're printing packet counts to stderr.
2746 Send a newline so that we move to the line after the packet count. */
2747 fprintf(stderr, "\n");
2751 /* We're printing packet counts to stderr.
2752 Send a newline so that we move to the line after the packet count. */
2753 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2759 * Capture child closed its side of the pipe, report any error and
2760 * do the required cleanup.
2763 capture_input_closed(capture_session *cap_session, gchar *msg)
2765 capture_file *cf = (capture_file *) cap_session->cf;
2768 fprintf(stderr, "tshark: %s\n", msg);
2772 if (cf != NULL && cf->wth != NULL) {
2773 wtap_close(cf->wth);
2774 if (cf->is_tempfile) {
2775 ws_unlink(cf->filename);
2778 #ifdef USE_BROKEN_G_MAIN_LOOP
2779 /*g_main_loop_quit(loop);*/
2782 loop_running = FALSE;
2791 capture_cleanup(DWORD ctrltype _U_)
2793 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2794 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2795 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2796 like SIGTERM at least when the machine's shutting down.
2798 For now, we handle them all as indications that we should clean up
2799 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2802 We must return TRUE so that no other handler - such as one that would
2803 terminate the process - gets called.
2805 XXX - for some reason, typing ^C to TShark, if you run this in
2806 a Cygwin console window in at least some versions of Cygwin,
2807 causes TShark to terminate immediately; this routine gets
2808 called, but the main loop doesn't get a chance to run and
2809 exit cleanly, at least if this is compiled with Microsoft Visual
2810 C++ (i.e., it's a property of the Cygwin console window or Bash;
2811 it happens if TShark is not built with Cygwin - for all I know,
2812 building it with Cygwin may make the problem go away). */
2814 /* tell the capture child to stop */
2815 sync_pipe_stop(&global_capture_session);
2817 /* don't stop our own loop already here, otherwise status messages and
2818 * cleanup wouldn't be done properly. The child will indicate the stop of
2819 * everything by calling capture_input_closed() later */
2825 capture_cleanup(int signum _U_)
2827 /* tell the capture child to stop */
2828 sync_pipe_stop(&global_capture_session);
2830 /* don't stop our own loop already here, otherwise status messages and
2831 * cleanup wouldn't be done properly. The child will indicate the stop of
2832 * everything by calling capture_input_closed() later */
2835 #endif /* HAVE_LIBPCAP */
2838 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2839 gint64 offset, struct wtap_pkthdr *whdr,
2846 /* The frame number of this packet is one more than the count of
2847 frames in this packet. */
2848 framenum = cf->count + 1;
2850 /* If we're not running a display filter and we're not printing any
2851 packet information, we don't need to do a dissection. This means
2852 that all packets can be marked as 'passed'. */
2855 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2857 /* If we're going to print packet information, or we're going to
2858 run a read filter, or display filter, or we're going to process taps, set up to
2859 do a dissection and do so. */
2861 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2862 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2863 /* Grab any resolved addresses */
2864 host_name_lookup_process();
2866 /* If we're running a read filter, prime the epan_dissect_t with that
2869 epan_dissect_prime_dfilter(edt, cf->rfcode);
2871 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2873 if (ref == &fdlocal) {
2874 ref_frame = fdlocal;
2878 epan_dissect_run(edt, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2880 /* Run the read filter if we have one. */
2882 passed = dfilter_apply_edt(cf->rfcode, edt);
2886 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2887 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2889 /* If we're not doing dissection then there won't be any dependent frames.
2890 * More importantly, edt.pi.dependent_frames won't be initialized because
2891 * epan hasn't been initialized.
2894 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2899 /* if we don't add it to the frame_data_sequence, clean it up right now
2901 frame_data_destroy(&fdlocal);
2905 epan_dissect_reset(edt);
2911 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2912 struct wtap_pkthdr *phdr, Buffer *buf,
2918 /* If we're not running a display filter and we're not printing any
2919 packet information, we don't need to do a dissection. This means
2920 that all packets can be marked as 'passed'. */
2923 /* If we're going to print packet information, or we're going to
2924 run a read filter, or we're going to process taps, set up to
2925 do a dissection and do so. */
2927 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2928 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2929 /* Grab any resolved addresses */
2930 host_name_lookup_process();
2932 /* If we're running a display filter, prime the epan_dissect_t with that
2935 epan_dissect_prime_dfilter(edt, cf->dfcode);
2937 col_custom_prime_edt(edt, &cf->cinfo);
2939 /* We only need the columns if either
2940 1) some tap needs the columns
2942 2) we're printing packet info but we're *not* verbose; in verbose
2943 mode, we print the protocol tree, not the protocol summary.
2945 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2950 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
2957 epan_dissect_run_with_taps(edt, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
2959 /* Run the read/display filter if we have one. */
2961 passed = dfilter_apply_edt(cf->dfcode, edt);
2965 frame_data_set_after_dissect(fdata, &cum_bytes);
2966 /* Process this packet. */
2967 if (print_packet_info) {
2968 /* We're printing packet information; print the information for
2970 print_packet(cf, edt);
2972 /* The ANSI C standard does not appear to *require* that a line-buffered
2973 stream be flushed to the host environment whenever a newline is
2974 written, it just says that, on such a stream, characters "are
2975 intended to be transmitted to or from the host environment as a
2976 block when a new-line character is encountered".
2978 The Visual C++ 6.0 C implementation doesn't do what is intended;
2979 even if you set a stream to be line-buffered, it still doesn't
2980 flush the buffer at the end of every line.
2982 So, if the "-l" flag was specified, we flush the standard output
2983 at the end of a packet. This will do the right thing if we're
2984 printing packet summary lines, and, as we print the entire protocol
2985 tree for a single packet without waiting for anything to happen,
2986 it should be as good as line-buffered mode if we're printing
2987 protocol trees. (The whole reason for the "-l" flag in either
2988 tcpdump or TShark is to allow the output of a live capture to
2989 be piped to a program or script and to have that script see the
2990 information for the packet as soon as it's printed, rather than
2991 having to wait until a standard I/O buffer fills up. */
2995 if (ferror(stdout)) {
2996 show_print_file_io_error(errno);
3005 epan_dissect_reset(edt);
3007 return passed || fdata->flags.dependent_of_displayed;
3011 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3012 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3015 int snapshot_length;
3019 gchar *err_info = NULL;
3021 char *save_file_string = NULL;
3022 gboolean filtering_tap_listeners;
3024 wtapng_section_t *shb_hdr;
3025 wtapng_iface_descriptions_t *idb_inf;
3028 epan_dissect_t *edt = NULL;
3030 shb_hdr = wtap_file_get_shb_info(cf->wth);
3031 idb_inf = wtap_file_get_idb_info(cf->wth);
3032 #ifdef PCAP_NG_DEFAULT
3033 if (idb_inf->number_of_interfaces > 1) {
3034 linktype = WTAP_ENCAP_PER_PACKET;
3036 linktype = wtap_file_encap(cf->wth);
3039 linktype = wtap_file_encap(cf->wth);
3041 if (save_file != NULL) {
3042 /* Get a string that describes what we're writing to */
3043 save_file_string = output_file_description(save_file);
3045 /* Set up to write to the capture file. */
3046 snapshot_length = wtap_snapshot_length(cf->wth);
3047 if (snapshot_length == 0) {
3048 /* Snapshot length of input file not known. */
3049 snapshot_length = WTAP_MAX_PACKET_SIZE;
3051 /* If we don't have an application name add Tshark */
3052 if (shb_hdr->shb_user_appl == NULL) {
3053 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_svnversion);
3054 shb_hdr->shb_user_appl = appname;
3057 if (linktype != WTAP_ENCAP_PER_PACKET &&
3058 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3059 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3060 snapshot_length, FALSE /* compressed */, &err);
3062 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3063 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3069 /* We couldn't set up to write to the capture file. */
3072 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3073 cmdarg_err("Capture files can't be written in that format.");
3076 case WTAP_ERR_UNSUPPORTED_ENCAP:
3077 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3078 cmdarg_err("The capture file being read can't be written as a "
3079 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3082 case WTAP_ERR_CANT_OPEN:
3083 cmdarg_err("The %s couldn't be created for some "
3084 "unknown reason.", save_file_string);
3087 case WTAP_ERR_SHORT_WRITE:
3088 cmdarg_err("A full header couldn't be written to the %s.",
3093 cmdarg_err("The %s could not be created: %s.", save_file_string,
3094 wtap_strerror(err));
3100 if (print_packet_info) {
3101 if (!write_preamble(cf)) {
3103 show_print_file_io_error(err);
3112 if (pdh && out_file_name_res) {
3113 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3114 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3115 wtap_file_type_subtype_short_string(out_file_type));
3119 /* Do we have any tap listeners with filters? */
3120 filtering_tap_listeners = have_filtering_tap_listeners();
3122 /* Get the union of the flags for all tap listeners. */
3123 tap_flags = union_of_tap_listener_flags();
3125 if (perform_two_pass_analysis) {
3128 /* Allocate a frame_data_sequence for all the frames. */
3129 cf->frames = new_frame_data_sequence();
3131 if (do_dissection) {
3132 gboolean create_proto_tree = FALSE;
3134 /* If we're going to be applying a filter, we'll need to
3135 create a protocol tree against which to apply the filter. */
3137 create_proto_tree = TRUE;
3139 /* We're not going to display the protocol tree on this pass,
3140 so it's not going to be "visible". */
3141 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3144 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3145 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3146 wtap_buf_ptr(cf->wth))) {
3147 /* Stop reading if we have the maximum number of packets;
3148 * When the -c option has not been used, max_packet_count
3149 * starts at 0, which practically means, never stop reading.
3150 * (unless we roll over max_packet_count ?)
3152 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3153 err = 0; /* This is not an error */
3160 epan_dissect_free(edt);
3164 /* Close the sequential I/O side, to free up memory it requires. */
3165 wtap_sequential_close(cf->wth);
3167 /* Allow the protocol dissectors to free up memory that they
3168 * don't need after the sequential run-through of the packets. */
3169 postseq_cleanup_all_protocols();
3173 buffer_init(&buf, 1500);
3175 if (do_dissection) {
3176 gboolean create_proto_tree;
3178 if (cf->dfcode || print_details || filtering_tap_listeners ||
3179 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3180 create_proto_tree = TRUE;
3182 create_proto_tree = FALSE;
3184 /* The protocol tree will be "visible", i.e., printed, only if we're
3185 printing packet details, which is true if we're printing stuff
3186 ("print_packet_info" is true) and we're in verbose mode
3187 ("packet_details" is true). */
3188 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3191 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3192 fdata = frame_data_sequence_find(cf->frames, framenum);
3193 if (wtap_seek_read(cf->wth, fdata->file_off, &cf->phdr,
3194 &buf, &err, &err_info)) {
3195 if (process_packet_second_pass(cf, edt, fdata, &cf->phdr, &buf,
3197 /* Either there's no read filtering or this packet passed the
3198 filter, so, if we're writing to a capture file, write
3201 if (!wtap_dump(pdh, &cf->phdr, buffer_start_ptr(&cf->buf), &err)) {
3202 /* Error writing to a capture file */
3205 case WTAP_ERR_UNSUPPORTED_ENCAP:
3207 * This is a problem with the particular frame we're writing
3208 * and the file type and subtype we're writing; note that,
3209 * and report the frame number and file type/subtype.
3211 * XXX - framenum is not necessarily the frame number in
3212 * the input file if there was a read filter.
3215 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3216 framenum, cf->filename,
3217 wtap_file_type_subtype_short_string(out_file_type));
3220 case WTAP_ERR_PACKET_TOO_LARGE:
3222 * This is a problem with the particular frame we're writing
3223 * and the file type and subtype we're writing; note that,
3224 * and report the frame number and file type/subtype.
3226 * XXX - framenum is not necessarily the frame number in
3227 * the input file if there was a read filter.
3230 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3231 framenum, cf->filename,
3232 wtap_file_type_subtype_short_string(out_file_type));
3236 show_capture_file_io_error(save_file, err, FALSE);
3239 wtap_dump_close(pdh, &err);
3249 epan_dissect_free(edt);
3258 if (do_dissection) {
3259 gboolean create_proto_tree;
3261 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3262 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3263 create_proto_tree = TRUE;
3265 create_proto_tree = FALSE;
3267 /* The protocol tree will be "visible", i.e., printed, only if we're
3268 printing packet details, which is true if we're printing stuff
3269 ("print_packet_info" is true) and we're in verbose mode
3270 ("packet_details" is true). */
3271 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3274 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3277 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3278 wtap_buf_ptr(cf->wth),
3280 /* Either there's no read filtering or this packet passed the
3281 filter, so, if we're writing to a capture file, write
3284 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err)) {
3285 /* Error writing to a capture file */
3288 case WTAP_ERR_UNSUPPORTED_ENCAP:
3290 * This is a problem with the particular frame we're writing
3291 * and the file type and subtype we're writing; note that,
3292 * and report the frame number and file type/subtype.
3295 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3296 framenum, cf->filename,
3297 wtap_file_type_subtype_short_string(out_file_type));
3300 case WTAP_ERR_PACKET_TOO_LARGE:
3302 * This is a problem with the particular frame we're writing
3303 * and the file type and subtype we're writing; note that,
3304 * and report the frame number and file type/subtype.
3307 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3308 framenum, cf->filename,
3309 wtap_file_type_subtype_short_string(out_file_type));
3313 show_capture_file_io_error(save_file, err, FALSE);
3316 wtap_dump_close(pdh, &err);
3322 /* Stop reading if we have the maximum number of packets;
3323 * When the -c option has not been used, max_packet_count
3324 * starts at 0, which practically means, never stop reading.
3325 * (unless we roll over max_packet_count ?)
3327 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3328 err = 0; /* This is not an error */
3334 epan_dissect_free(edt);
3341 * Print a message noting that the read failed somewhere along the line.
3343 * If we're printing packet data, and the standard output and error are
3344 * going to the same place, flush the standard output, so everything
3345 * buffered up is written, and then print a newline to the standard error
3346 * before printing the error message, to separate it from the packet
3347 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3348 * the _fstat() documentation at Microsoft doesn't indicate whether
3349 * st_ino is even supported.)
3352 if (print_packet_info) {
3353 struct stat stat_stdout, stat_stderr;
3355 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
3356 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3357 stat_stdout.st_ino == stat_stderr.st_ino) {
3359 fprintf(stderr, "\n");
3366 case WTAP_ERR_UNSUPPORTED:
3367 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3368 cf->filename, err_info);
3372 case WTAP_ERR_UNSUPPORTED_ENCAP:
3373 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
3374 cf->filename, err_info);
3378 case WTAP_ERR_CANT_READ:
3379 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
3383 case WTAP_ERR_SHORT_READ:
3384 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3388 case WTAP_ERR_BAD_FILE:
3389 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3390 cf->filename, err_info);
3394 case WTAP_ERR_DECOMPRESS:
3395 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3396 "(%s)", cf->filename, err_info);
3400 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3401 cf->filename, wtap_strerror(err));
3404 if (save_file != NULL) {
3405 /* Now close the capture file. */
3406 if (!wtap_dump_close(pdh, &err))
3407 show_capture_file_io_error(save_file, err, TRUE);
3410 if (save_file != NULL) {
3411 /* Now close the capture file. */
3412 if (!wtap_dump_close(pdh, &err))
3413 show_capture_file_io_error(save_file, err, TRUE);
3415 if (print_packet_info) {
3416 if (!write_finale()) {
3418 show_print_file_io_error(err);
3425 wtap_close(cf->wth);
3428 g_free(save_file_string);
3435 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3436 const guchar *pd, guint tap_flags)
3442 /* Count this packet. */
3445 /* If we're not running a display filter and we're not printing any
3446 packet information, we don't need to do a dissection. This means
3447 that all packets can be marked as 'passed'. */
3450 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3452 /* If we're going to print packet information, or we're going to
3453 run a read filter, or we're going to process taps, set up to
3454 do a dissection and do so. */
3456 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3457 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3458 /* Grab any resolved addresses */
3459 host_name_lookup_process();
3461 /* If we're running a filter, prime the epan_dissect_t with that
3464 epan_dissect_prime_dfilter(edt, cf->dfcode);
3466 col_custom_prime_edt(edt, &cf->cinfo);
3468 /* We only need the columns if either
3469 1) some tap needs the columns
3471 2) we're printing packet info but we're *not* verbose; in verbose
3472 mode, we print the protocol tree, not the protocol summary.
3474 3) there is a column mapped as an individual field */
3475 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3480 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3482 if (ref == &fdata) {
3487 epan_dissect_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3489 /* Run the filter if we have it. */
3491 passed = dfilter_apply_edt(cf->dfcode, edt);
3495 frame_data_set_after_dissect(&fdata, &cum_bytes);
3497 /* Process this packet. */
3498 if (print_packet_info) {
3499 /* We're printing packet information; print the information for
3501 print_packet(cf, edt);
3503 /* The ANSI C standard does not appear to *require* that a line-buffered
3504 stream be flushed to the host environment whenever a newline is
3505 written, it just says that, on such a stream, characters "are
3506 intended to be transmitted to or from the host environment as a
3507 block when a new-line character is encountered".
3509 The Visual C++ 6.0 C implementation doesn't do what is intended;
3510 even if you set a stream to be line-buffered, it still doesn't
3511 flush the buffer at the end of every line.
3513 So, if the "-l" flag was specified, we flush the standard output
3514 at the end of a packet. This will do the right thing if we're
3515 printing packet summary lines, and, as we print the entire protocol
3516 tree for a single packet without waiting for anything to happen,
3517 it should be as good as line-buffered mode if we're printing
3518 protocol trees. (The whole reason for the "-l" flag in either
3519 tcpdump or TShark is to allow the output of a live capture to
3520 be piped to a program or script and to have that script see the
3521 information for the packet as soon as it's printed, rather than
3522 having to wait until a standard I/O buffer fills up. */
3526 if (ferror(stdout)) {
3527 show_print_file_io_error(errno);
3532 /* this must be set after print_packet() [bug #8160] */
3533 prev_dis_frame = fdata;
3534 prev_dis = &prev_dis_frame;
3537 prev_cap_frame = fdata;
3538 prev_cap = &prev_cap_frame;
3541 epan_dissect_reset(edt);
3542 frame_data_destroy(&fdata);
3548 write_preamble(capture_file *cf)
3550 switch (output_action) {
3553 return print_preamble(print_stream, cf ? cf->filename : NULL, wireshark_svnversion);
3557 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3559 write_psml_preamble(stdout);
3560 return !ferror(stdout);
3563 write_fields_preamble(output_fields, stdout);
3564 return !ferror(stdout);
3567 g_assert_not_reached();
3573 get_line_buf(size_t len)
3575 static char *line_bufp = NULL;
3576 static size_t line_buf_len = 256;
3577 size_t new_line_buf_len;
3579 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3580 new_line_buf_len *= 2)
3582 if (line_bufp == NULL) {
3583 line_buf_len = new_line_buf_len;
3584 line_bufp = (char *)g_malloc(line_buf_len + 1);
3586 if (new_line_buf_len > line_buf_len) {
3587 line_buf_len = new_line_buf_len;
3588 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3595 put_string(char *dest, const char *str, size_t str_len)
3597 memcpy(dest, str, str_len);
3598 dest[str_len] = '\0';
3602 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3606 for (i = str_len; i < str_with_spaces; i++)
3609 put_string(dest, str, str_len);
3613 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3617 memcpy(dest, str, str_len);
3618 for (i = str_len; i < str_with_spaces; i++)
3621 dest[str_with_spaces] = '\0';
3625 print_columns(capture_file *cf)
3633 line_bufp = get_line_buf(256);
3636 for (i = 0; i < cf->cinfo.num_cols; i++) {
3637 /* Skip columns not marked as visible. */
3638 if (!get_column_visible(i))
3640 switch (cf->cinfo.col_fmt[i]) {
3642 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3645 line_bufp = get_line_buf(buf_offset + column_len);
3646 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3652 case COL_ABS_YMD_TIME: /* XXX - wider */
3653 case COL_ABS_YDOY_TIME: /* XXX - wider */
3655 case COL_UTC_YMD_TIME: /* XXX - wider */
3656 case COL_UTC_YDOY_TIME: /* XXX - wider */
3657 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3658 if (column_len < 10)
3660 line_bufp = get_line_buf(buf_offset + column_len);
3661 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3667 case COL_DEF_DL_SRC:
3668 case COL_RES_DL_SRC:
3669 case COL_UNRES_DL_SRC:
3670 case COL_DEF_NET_SRC:
3671 case COL_RES_NET_SRC:
3672 case COL_UNRES_NET_SRC:
3673 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3674 if (column_len < 12)
3676 line_bufp = get_line_buf(buf_offset + column_len);
3677 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3683 case COL_DEF_DL_DST:
3684 case COL_RES_DL_DST:
3685 case COL_UNRES_DL_DST:
3686 case COL_DEF_NET_DST:
3687 case COL_RES_NET_DST:
3688 case COL_UNRES_NET_DST:
3689 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3690 if (column_len < 12)
3692 line_bufp = get_line_buf(buf_offset + column_len);
3693 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3697 column_len = strlen(cf->cinfo.col_data[i]);
3698 line_bufp = get_line_buf(buf_offset + column_len);
3699 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3702 buf_offset += column_len;
3703 if (i != cf->cinfo.num_cols - 1) {
3705 * This isn't the last column, so we need to print a
3706 * separator between this column and the next.
3708 * If we printed a network source and are printing a
3709 * network destination of the same type next, separate
3710 * them with " -> "; if we printed a network destination
3711 * and are printing a network source of the same type
3712 * next, separate them with " <- "; otherwise separate them
3715 * We add enough space to the buffer for " <- " or " -> ",
3716 * even if we're only adding " ".
3718 line_bufp = get_line_buf(buf_offset + 4);
3719 switch (cf->cinfo.col_fmt[i]) {
3724 switch (cf->cinfo.col_fmt[i + 1]) {
3729 put_string(line_bufp + buf_offset, " -> ", 4);
3734 put_string(line_bufp + buf_offset, " ", 1);
3740 case COL_DEF_DL_SRC:
3741 case COL_RES_DL_SRC:
3742 case COL_UNRES_DL_SRC:
3743 switch (cf->cinfo.col_fmt[i + 1]) {
3745 case COL_DEF_DL_DST:
3746 case COL_RES_DL_DST:
3747 case COL_UNRES_DL_DST:
3748 put_string(line_bufp + buf_offset, " -> ", 4);
3753 put_string(line_bufp + buf_offset, " ", 1);
3759 case COL_DEF_NET_SRC:
3760 case COL_RES_NET_SRC:
3761 case COL_UNRES_NET_SRC:
3762 switch (cf->cinfo.col_fmt[i + 1]) {
3764 case COL_DEF_NET_DST:
3765 case COL_RES_NET_DST:
3766 case COL_UNRES_NET_DST:
3767 put_string(line_bufp + buf_offset, " -> ", 4);
3772 put_string(line_bufp + buf_offset, " ", 1);
3781 switch (cf->cinfo.col_fmt[i + 1]) {
3786 put_string(line_bufp + buf_offset, " <- ", 4);
3791 put_string(line_bufp + buf_offset, " ", 1);
3797 case COL_DEF_DL_DST:
3798 case COL_RES_DL_DST:
3799 case COL_UNRES_DL_DST:
3800 switch (cf->cinfo.col_fmt[i + 1]) {
3802 case COL_DEF_DL_SRC:
3803 case COL_RES_DL_SRC:
3804 case COL_UNRES_DL_SRC:
3805 put_string(line_bufp + buf_offset, " <- ", 4);
3810 put_string(line_bufp + buf_offset, " ", 1);
3816 case COL_DEF_NET_DST:
3817 case COL_RES_NET_DST:
3818 case COL_UNRES_NET_DST:
3819 switch (cf->cinfo.col_fmt[i + 1]) {
3821 case COL_DEF_NET_SRC:
3822 case COL_RES_NET_SRC:
3823 case COL_UNRES_NET_SRC:
3824 put_string(line_bufp + buf_offset, " <- ", 4);
3829 put_string(line_bufp + buf_offset, " ", 1);
3836 put_string(line_bufp + buf_offset, " ", 1);
3842 return print_line(print_stream, 0, line_bufp);
3846 print_packet(capture_file *cf, epan_dissect_t *edt)
3848 print_args_t print_args;
3850 if (print_summary || output_fields_has_cols(output_fields)) {
3851 /* Just fill in the columns. */
3852 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3854 if (print_summary) {
3855 /* Now print them. */
3856 switch (output_action) {
3859 if (!print_columns(cf))
3864 proto_tree_write_psml(edt, stdout);
3865 return !ferror(stdout);
3866 case WRITE_FIELDS: /*No non-verbose "fields" format */
3867 g_assert_not_reached();
3872 if (print_details) {
3873 /* Print the information in the protocol tree. */
3874 switch (output_action) {
3877 /* Only initialize the fields that are actually used in proto_tree_print.
3878 * This is particularly important for .range, as that's heap memory which
3879 * we would otherwise have to g_free().
3880 print_args.to_file = TRUE;
3881 print_args.format = print_format;
3882 print_args.print_summary = print_summary;
3883 print_args.print_formfeed = FALSE;
3884 packet_range_init(&print_args.range, &cfile);
3886 print_args.print_hex = print_hex;
3887 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3889 if (!proto_tree_print(&print_args, edt, print_stream))
3892 if (!print_line(print_stream, 0, separator))
3898 proto_tree_write_pdml(edt, stdout);
3900 return !ferror(stdout);
3902 proto_tree_write_fields(output_fields, edt, &cf->cinfo, stdout);
3904 return !ferror(stdout);
3908 if (print_summary || print_details) {
3909 if (!print_line(print_stream, 0, ""))
3912 if (!print_hex_data(print_stream, edt))
3914 if (!print_line(print_stream, 0, separator))
3923 switch (output_action) {
3926 return print_finale(print_stream);
3930 write_pdml_finale(stdout);
3932 write_psml_finale(stdout);
3933 return !ferror(stdout);
3936 write_fields_finale(output_fields, stdout);
3937 return !ferror(stdout);
3940 g_assert_not_reached();
3946 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3950 char err_msg[2048+1];
3952 wth = wtap_open_offline(fname, err, &err_info, perform_two_pass_analysis);
3956 /* The open succeeded. Fill in the information for this file. */
3958 /* Create new epan session for dissection. */
3959 epan_free(cf->epan);
3960 cf->epan = tshark_epan_new(cf);
3963 cf->f_datalen = 0; /* not used, but set it anyway */
3965 /* Set the file name because we need it to set the follow stream filter.
3966 XXX - is that still true? We need it for other reasons, though,
3968 cf->filename = g_strdup(fname);
3970 /* Indicate whether it's a permanent or temporary file. */
3971 cf->is_tempfile = is_tempfile;
3973 /* No user changes yet. */
3974 cf->unsaved_changes = FALSE;
3976 cf->cd_t = wtap_file_type_subtype(cf->wth);
3978 cf->drops_known = FALSE;
3980 cf->snap = wtap_snapshot_length(cf->wth);
3981 if (cf->snap == 0) {
3982 /* Snapshot length not known. */
3983 cf->has_snap = FALSE;
3984 cf->snap = WTAP_MAX_PACKET_SIZE;
3986 cf->has_snap = TRUE;
3987 nstime_set_zero(&cf->elapsed_time);
3992 cf->state = FILE_READ_IN_PROGRESS;
3994 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
3995 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4000 g_snprintf(err_msg, sizeof err_msg,
4001 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4002 cmdarg_err("%s", err_msg);
4007 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4009 char *save_file_string;
4011 save_file_string = output_file_description(fname);
4016 cmdarg_err("Not all the packets could be written to the %s because there is "
4017 "no space left on the file system.",
4023 cmdarg_err("Not all the packets could be written to the %s because you are "
4024 "too close to, or over your disk quota.",
4029 case WTAP_ERR_CANT_CLOSE:
4030 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4034 case WTAP_ERR_SHORT_WRITE:
4035 cmdarg_err("Not all the packets could be written to the %s.",
4041 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4042 wtap_strerror(err));
4044 cmdarg_err("An error occurred while writing to the %s: %s.",
4045 save_file_string, wtap_strerror(err));
4049 g_free(save_file_string);
4053 show_print_file_io_error(int err)
4058 cmdarg_err("Not all the packets could be printed because there is "
4059 "no space left on the file system.");
4064 cmdarg_err("Not all the packets could be printed because you are "
4065 "too close to, or over your disk quota.");
4070 cmdarg_err("An error occurred while printing packets: %s.",
4077 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4081 static char errmsg_errno[1024+1];
4084 /* Wiretap error. */
4087 case WTAP_ERR_NOT_REGULAR_FILE:
4088 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4091 case WTAP_ERR_RANDOM_OPEN_PIPE:
4092 /* Seen only when opening a capture file for reading. */
4093 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4096 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4097 /* Seen only when opening a capture file for reading. */
4098 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4101 case WTAP_ERR_UNSUPPORTED:
4102 /* Seen only when opening a capture file for reading. */
4103 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4104 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
4107 errmsg = errmsg_errno;
4110 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4111 /* Seen only when opening a capture file for writing. */
4112 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4113 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4114 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4115 errmsg = errmsg_errno;
4118 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4119 /* Seen only when opening a capture file for writing. */
4120 errmsg = "TShark doesn't support writing capture files in that format.";
4123 case WTAP_ERR_UNSUPPORTED_ENCAP:
4125 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4126 "TShark can't save this capture as a \"%s\" file.",
4127 wtap_file_type_subtype_short_string(file_type));
4129 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4130 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
4134 errmsg = errmsg_errno;
4137 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4139 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4140 "TShark can't save this capture as a \"%s\" file.",
4141 wtap_file_type_subtype_short_string(file_type));
4142 errmsg = errmsg_errno;
4144 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4147 case WTAP_ERR_BAD_FILE:
4148 /* Seen only when opening a capture file for reading. */
4149 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4150 "The file \"%%s\" appears to be damaged or corrupt.\n"
4153 errmsg = errmsg_errno;
4156 case WTAP_ERR_CANT_OPEN:
4158 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4160 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4163 case WTAP_ERR_SHORT_READ:
4164 errmsg = "The file \"%s\" appears to have been cut short"
4165 " in the middle of a packet or other data.";
4168 case WTAP_ERR_SHORT_WRITE:
4169 errmsg = "A full header couldn't be written to the file \"%s\".";
4172 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4173 errmsg = "This file type cannot be written as a compressed file.";
4176 case WTAP_ERR_DECOMPRESS:
4177 /* Seen only when opening a capture file for reading. */
4178 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4179 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4182 errmsg = errmsg_errno;
4186 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4187 "The file \"%%s\" could not be %s: %s.",
4188 for_writing ? "created" : "opened",
4189 wtap_strerror(err));
4190 errmsg = errmsg_errno;
4194 errmsg = file_open_error_message(err, for_writing);
4199 * Open/create errors are reported with an console message in TShark.
4202 open_failure_message(const char *filename, int err, gboolean for_writing)
4204 fprintf(stderr, "tshark: ");
4205 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4206 fprintf(stderr, "\n");
4211 * General errors are reported with an console message in TShark.
4214 failure_message(const char *msg_format, va_list ap)
4216 fprintf(stderr, "tshark: ");
4217 vfprintf(stderr, msg_format, ap);
4218 fprintf(stderr, "\n");
4222 * Read errors are reported with an console message in TShark.
4225 read_failure_message(const char *filename, int err)
4227 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4228 filename, g_strerror(err));
4232 * Write errors are reported with an console message in TShark.
4235 write_failure_message(const char *filename, int err)
4237 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4238 filename, g_strerror(err));
4242 * Report an error in command-line arguments.
4245 cmdarg_err(const char *fmt, ...)
4250 failure_message(fmt, ap);
4255 * Report additional information for an error in command-line arguments.
4258 cmdarg_err_cont(const char *fmt, ...)
4263 vfprintf(stderr, fmt, ap);
4264 fprintf(stderr, "\n");
4270 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4275 * indent-tabs-mode: nil
4278 * vi: set shiftwidth=2 tabstop=8 expandtab:
4279 * :indentSize=2:tabSize=8:noTabs=true: