3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
50 #ifdef HAVE_SYS_STAT_H
51 # include <sys/stat.h>
55 #include "wsutil/wsgetopt.h"
60 #include <epan/exceptions.h>
61 #include <epan/epan-int.h>
62 #include <epan/epan.h>
63 #include <wsutil/crash_info.h>
64 #include <wsutil/privileges.h>
65 #include <wsutil/file_util.h>
66 #include <wsutil/filesystem.h>
67 #include <wsutil/report_err.h>
70 #include <epan/timestamp.h>
71 #include <epan/packet.h>
73 #include <epan/wslua/init_wslua.h>
76 #include "frame_tvbuff.h"
77 #include <epan/disabled_protos.h>
78 #include <epan/prefs.h>
79 #include <epan/column.h>
80 #include <epan/print.h>
81 #include <epan/addr_resolv.h>
83 #include "ui/ui_util.h"
84 #include "clopts_common.h"
85 #include "cmdarg_err.h"
86 #include "version_info.h"
88 #include <epan/epan_dissect.h>
90 #include <epan/stat_cmd_args.h>
91 #include <epan/timestamp.h>
92 #include <epan/ex-opt.h>
94 #include "capture_opts.h"
97 #include "capture_ui_utils.h"
98 #include "capture_ifinfo.h"
99 #include "capture-pcap-util.h"
101 #include "capture-wpcap.h"
102 #include <wsutil/unicode-utils.h>
104 #include "capture_session.h"
105 #include "capture_sync.h"
106 #include "capture_opts.h"
107 #endif /* HAVE_LIBPCAP */
109 #include <epan/funnel.h>
112 #include <wsutil/plugins.h>
116 * This is the template for the decode as option; it is shared between the
117 * various functions that output the usage for this parameter.
119 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
121 static guint32 cum_bytes;
122 static const frame_data *ref;
123 static frame_data ref_frame;
124 static frame_data *prev_dis;
125 static frame_data prev_dis_frame;
126 static frame_data *prev_cap;
127 static frame_data prev_cap_frame;
129 static const char* prev_display_dissector_name = NULL;
131 static gboolean perform_two_pass_analysis;
134 * The way the packet decode is to be written.
137 WRITE_TEXT, /* summary or detail text */
138 WRITE_XML, /* PDML or PSML */
139 WRITE_FIELDS /* User defined list of fields */
140 /* Add CSV and the like here */
143 static output_action_e output_action;
144 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
145 static gboolean print_packet_info; /* TRUE if we're to print packet information */
146 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
147 static gboolean print_details; /* TRUE if we're to print packet details information */
148 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
149 static gboolean line_buffered;
150 static gboolean really_quiet = FALSE;
152 static print_format_e print_format = PR_FMT_TEXT;
153 static print_stream_t *print_stream;
155 static output_fields_t* output_fields = NULL;
157 /* The line separator used between packets, changeable via the -S option */
158 static const char *separator = "";
162 * TRUE if we're to print packet counts to keep track of captured packets.
164 static gboolean print_packet_counts;
166 static capture_options global_capture_opts;
167 static capture_session global_capture_session;
170 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
171 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
174 static gboolean capture(void);
175 static void report_counts(void);
177 static BOOL WINAPI capture_cleanup(DWORD);
179 static void capture_cleanup(int);
181 static void report_counts_siginfo(int);
184 #endif /* HAVE_LIBPCAP */
186 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
187 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
188 struct wtap_pkthdr *whdr, const guchar *pd,
190 static void show_capture_file_io_error(const char *, int, gboolean);
191 static void show_print_file_io_error(int err);
192 static gboolean write_preamble(capture_file *cf);
193 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
194 static gboolean write_finale(void);
195 static const char *cf_open_error_message(int err, gchar *err_info,
196 gboolean for_writing, int file_type);
198 static void open_failure_message(const char *filename, int err,
199 gboolean for_writing);
200 static void failure_message(const char *msg_format, va_list ap);
201 static void read_failure_message(const char *filename, int err);
202 static void write_failure_message(const char *filename, int err);
207 const char *sstr; /* The short string */
208 const char *lstr; /* The long string */
212 string_compare(gconstpointer a, gconstpointer b)
214 return strcmp(((const struct string_elem *)a)->sstr,
215 ((const struct string_elem *)b)->sstr);
219 string_elem_print(gpointer data, gpointer not_used _U_)
221 fprintf(stderr, " %s - %s\n",
222 ((struct string_elem *)data)->sstr,
223 ((struct string_elem *)data)->lstr);
227 list_capture_types(void) {
229 struct string_elem *captypes;
232 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
234 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
235 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
236 if (wtap_dump_can_open(i)) {
237 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
238 captypes[i].lstr = wtap_file_type_subtype_string(i);
239 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
242 g_slist_foreach(list, string_elem_print, NULL);
248 list_read_capture_types(void) {
250 struct string_elem *captypes;
252 const char *magic = "Magic-value-based";
253 const char *heuristic = "Heuristics-based";
255 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
256 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
258 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
259 for (i = 0; open_routines[i].name != NULL; i++) {
260 captypes[i].sstr = open_routines[i].name;
261 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
262 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
264 g_slist_foreach(list, string_elem_print, NULL);
270 print_usage(gboolean print_ver)
277 "TShark " VERSION "%s\n"
278 "Dump and analyze network traffic.\n"
279 "See http://www.wireshark.org for more information.\n"
282 wireshark_gitversion, get_copyright_info());
286 fprintf(output, "\n");
287 fprintf(output, "Usage: tshark [options] ...\n");
288 fprintf(output, "\n");
291 fprintf(output, "Capture interface:\n");
292 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
293 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
294 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
295 fprintf(output, " -p don't capture in promiscuous mode\n");
296 #ifdef HAVE_PCAP_CREATE
297 fprintf(output, " -I capture in monitor mode, if available\n");
299 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
300 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
302 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
303 fprintf(output, " -D print list of interfaces and exit\n");
304 fprintf(output, " -L print list of link-layer types of iface and exit\n");
305 fprintf(output, "\n");
306 fprintf(output, "Capture stop conditions:\n");
307 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
308 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
309 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
310 fprintf(output, " files:NUM - stop after NUM files\n");
311 /*fprintf(output, "\n");*/
312 fprintf(output, "Capture output:\n");
313 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
314 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
315 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
316 #endif /* HAVE_LIBPCAP */
317 #ifdef HAVE_PCAP_REMOTE
318 fprintf(output, "RPCAP options:\n");
319 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
321 /*fprintf(output, "\n");*/
322 fprintf(output, "Input file:\n");
323 fprintf(output, " -r <infile> set the filename to read from (no stdin!)\n");
325 fprintf(output, "\n");
326 fprintf(output, "Processing:\n");
327 fprintf(output, " -2 perform a two-pass analysis\n");
328 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
329 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
330 fprintf(output, " syntax\n");
331 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
332 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
333 fprintf(output, " -d %s ...\n", decode_as_arg_template);
334 fprintf(output, " \"Decode As\", see the man page for details\n");
335 fprintf(output, " Example: tcp.port==8888,http\n");
336 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
337 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
339 /*fprintf(output, "\n");*/
340 fprintf(output, "Output:\n");
341 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
342 fprintf(output, " (or to the standard output for \"-\")\n");
343 fprintf(output, " -C <config profile> start with specified configuration profile\n");
344 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
345 fprintf(output, " an empty \"-F\" option will list the file types\n");
346 fprintf(output, " -V add output of packet tree (Packet Details)\n");
347 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
348 fprintf(output, " separated\n");
349 fprintf(output, " -P print packet summary even when writing to a file\n");
350 fprintf(output, " -S <separator> the line separator to print between packets\n");
351 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
352 fprintf(output, " -T pdml|ps|psml|text|fields\n");
353 fprintf(output, " format of text output (def: text)\n");
354 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
355 fprintf(output, " _ws.col.Info)\n");
356 fprintf(output, " this option can be repeated to print multiple fields\n");
357 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
358 fprintf(output, " header=y|n switch headers on and off\n");
359 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
360 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
361 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
362 fprintf(output, " aggregator\n");
363 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
364 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
365 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
366 fprintf(output, " -l flush standard output after each packet\n");
367 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
368 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
369 fprintf(output, " -g enable group read access on the output file(s)\n");
370 fprintf(output, " -W n Save extra information in the file, if supported.\n");
371 fprintf(output, " n = write network address resolution information\n");
372 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
373 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
374 fprintf(output, " --capture-comment <comment>\n");
375 fprintf(output, " add a capture comment to the newly created\n");
376 fprintf(output, " output file (only for pcapng)\n");
378 fprintf(output, "\n");
379 fprintf(output, "Miscellaneous:\n");
380 fprintf(output, " -h display this help and exit\n");
381 fprintf(output, " -v display version info and exit\n");
382 fprintf(output, " -o <name>:<value> ... override preference setting\n");
383 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
384 fprintf(output, " -G [report] dump one of several available reports and exit\n");
385 fprintf(output, " default report=\"fields\"\n");
386 fprintf(output, " use \"-G ?\" for more help\n");
388 fprintf(output, "\n");
389 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
390 fprintf(output, "You might want to reset it\n");
391 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
392 fprintf(output, "\n");
398 glossary_option_help(void)
404 fprintf(output, "TShark " VERSION "%s\n", wireshark_gitversion);
406 fprintf(output, "\n");
407 fprintf(output, "Usage: tshark -G [report]\n");
408 fprintf(output, "\n");
409 fprintf(output, "Glossary table reports:\n");
410 fprintf(output, " -G column-formats dump column format codes and exit\n");
411 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
412 fprintf(output, " -G fields dump fields glossary and exit\n");
413 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
414 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
415 fprintf(output, " -G plugins dump installed plugins and exit\n");
416 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
417 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
418 fprintf(output, "\n");
419 fprintf(output, "Preference reports:\n");
420 fprintf(output, " -G currentprefs dump current preferences and exit\n");
421 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
422 fprintf(output, "\n");
426 * For a dissector table, print on the stream described by output,
427 * its short name (which is what's used in the "-d" option) and its
431 display_dissector_table_names(const char *table_name, const char *ui_name,
434 if ((prev_display_dissector_name == NULL) ||
435 (strcmp(prev_display_dissector_name, table_name) != 0)) {
436 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
437 prev_display_dissector_name = table_name;
442 * For a dissector handle, print on the stream described by output,
443 * the filter name (which is what's used in the "-d" option) and the full
444 * name for the protocol that corresponds to this handle.
447 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
450 const gchar *proto_filter_name;
451 const gchar *proto_ui_name;
453 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
455 if (proto_id != -1) {
456 proto_filter_name = proto_get_protocol_filter_name(proto_id);
457 proto_ui_name = proto_get_protocol_name(proto_id);
458 g_assert(proto_filter_name != NULL);
459 g_assert(proto_ui_name != NULL);
461 if ((prev_display_dissector_name == NULL) ||
462 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
463 fprintf((FILE *)output, "\t%s (%s)\n",
466 prev_display_dissector_name = proto_filter_name;
472 * The protocol_name_search structure is used by find_protocol_name_func()
473 * to pass parameters and store results
475 struct protocol_name_search{
476 gchar *searched_name; /* Protocol filter name we are looking for */
477 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
478 guint nb_match; /* How many dissectors matched searched_name */
480 typedef struct protocol_name_search *protocol_name_search_t;
483 * This function parses all dissectors associated with a table to find the
484 * one whose protocol has the specified filter name. It is called
485 * as a reference function in a call to dissector_table_foreach_handle.
486 * The name we are looking for, as well as the results, are stored in the
487 * protocol_name_search struct pointed to by user_data.
488 * If called using dissector_table_foreach_handle, we actually parse the
489 * whole list of dissectors.
492 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
496 const gchar *protocol_filter_name;
497 protocol_name_search_t search_info;
501 search_info = (protocol_name_search_t)user_data;
503 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
504 if (proto_id != -1) {
505 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
506 g_assert(protocol_filter_name != NULL);
507 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
509 if (search_info->nb_match == 0) {
510 /* Record this handle only if this is the first match */
511 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
513 search_info->nb_match++;
519 * Allow dissector key names to be sorted alphabetically
523 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
525 return strcmp((const char*)dissector_a, (const char*)dissector_b);
529 * Print all layer type names supported.
530 * We send the output to the stream described by the handle output.
534 fprint_all_layer_types(FILE *output)
537 prev_display_dissector_name = NULL;
538 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
542 * Print all protocol names supported for a specific layer type.
543 * table_name contains the layer type name in which the search is performed.
544 * We send the output to the stream described by the handle output.
548 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
551 prev_display_dissector_name = NULL;
552 dissector_table_foreach_handle(table_name,
553 display_dissector_names,
558 * The function below parses the command-line parameters for the decode as
559 * feature (a string pointer by cl_param).
560 * It checks the format of the command-line, searches for a matching table
561 * and dissector. If a table/dissector match is not found, we display a
562 * summary of the available tables/dissectors (on stderr) and return FALSE.
563 * If everything is fine, we get the "Decode as" preference activated,
564 * then we return TRUE.
567 add_decode_as(const gchar *cl_param)
570 guint32 selector, selector2;
571 gchar *decoded_param;
572 gchar *remaining_param;
574 gchar *dissector_str;
575 dissector_handle_t dissector_matching;
576 dissector_table_t table_matching;
577 ftenum_t dissector_table_selector_type;
578 struct protocol_name_search user_protocol_name;
582 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
585 decoded_param = g_strdup(cl_param);
586 g_assert(decoded_param);
589 /* The lines below will parse this string (modifying it) to extract all
590 necessary information. Note that decoded_param is still needed since
591 strings are not copied - we just save pointers. */
593 /* This section extracts a layer type (table_name) from decoded_param */
594 table_name = decoded_param; /* Layer type string starts from beginning */
596 remaining_param = strchr(table_name, '=');
597 if (remaining_param == NULL) {
598 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
599 /* If the argument does not follow the template, carry on anyway to check
600 if the table name is at least correct. If remaining_param is NULL,
601 we'll exit anyway further down */
604 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
607 /* Remove leading and trailing spaces from the table name */
608 while ( table_name[0] == ' ' )
610 while ( table_name[strlen(table_name) - 1] == ' ' )
611 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
613 /* The following part searches a table matching with the layer type specified */
614 table_matching = NULL;
616 /* Look for the requested table */
617 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
618 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
621 table_matching = find_dissector_table(table_name);
622 if (!table_matching) {
623 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
627 if (!table_matching) {
628 /* Display a list of supported layer types to help the user, if the
629 specified layer type was not found */
630 cmdarg_err("Valid layer types are:");
631 fprint_all_layer_types(stderr);
633 if (remaining_param == NULL || !table_matching) {
634 /* Exit if the layer type was not found, or if no '=' separator was found
636 g_free(decoded_param);
640 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
641 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
644 remaining_param++; /* Move to the second '=' */
645 *remaining_param = '\0'; /* Remove the second '=' */
647 remaining_param++; /* Position after the layer type string */
649 /* This section extracts a selector value (selector_str) from decoded_param */
651 selector_str = remaining_param; /* Next part starts with the selector number */
653 remaining_param = strchr(selector_str, ',');
654 if (remaining_param == NULL) {
655 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
656 /* If the argument does not follow the template, carry on anyway to check
657 if the selector value is at least correct. If remaining_param is NULL,
658 we'll exit anyway further down */
661 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
664 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
666 switch (dissector_table_selector_type) {
672 /* The selector for this table is an unsigned number. Parse it as such.
673 There's no need to remove leading and trailing spaces from the
674 selector number string, because sscanf will do that for us. */
675 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
680 if (op != ':' && op != '-') {
681 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
682 g_free(decoded_param);
686 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
687 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
688 g_free(decoded_param);
692 else if (selector2 < selector) {
693 /* We could swap them for the user, but maybe it's better to call
694 * this out as an error in case it's not what was intended? */
695 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
696 g_free(decoded_param);
701 cmdarg_err("Invalid selector number \"%s\"", selector_str);
702 g_free(decoded_param);
711 /* The selector for this table is a string. */
715 /* There are currently no dissector tables with any types other
716 than the ones listed above. */
717 g_assert_not_reached();
720 if (remaining_param == NULL) {
721 /* Exit if no ',' separator was found (see above) */
722 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
723 fprint_all_protocols_for_layer_types(stderr, table_name);
724 g_free(decoded_param);
728 remaining_param++; /* Position after the selector number string */
730 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
732 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
734 /* Remove leading and trailing spaces from the dissector name */
735 while ( dissector_str[0] == ' ' )
737 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
738 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
740 dissector_matching = NULL;
742 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
743 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 */
744 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
747 user_protocol_name.nb_match = 0;
748 user_protocol_name.searched_name = dissector_str;
749 user_protocol_name.matched_handle = NULL;
751 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 */
753 if (user_protocol_name.nb_match != 0) {
754 dissector_matching = user_protocol_name.matched_handle;
755 if (user_protocol_name.nb_match > 1) {
756 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
760 /* OK, check whether the problem is that there isn't any such
761 protocol, or that there is but it's not specified as a protocol
762 that's valid for that dissector table.
763 Note, we don't exit here, but dissector_matching will remain NULL,
765 if (proto_get_id_by_filter_name(dissector_str) == -1) {
766 /* No such protocol */
767 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
769 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
770 dissector_str, table_name);
775 if (!dissector_matching) {
776 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
777 fprint_all_protocols_for_layer_types(stderr, table_name);
778 g_free(decoded_param);
782 /* This is the end of the code that parses the command-line options.
783 All information is now stored in the variables:
787 The above variables that are strings are still pointing to areas within
788 decoded_parm. decoded_parm thus still needs to be kept allocated in
789 until we stop needing these variables
790 decoded_param will be deallocated at each exit point of this function */
793 /* We now have a pointer to the handle for the requested dissector
794 (requested protocol) inside the variable dissector_matching */
795 switch (dissector_table_selector_type) {
801 /* The selector for this table is an unsigned number. */
803 dissector_change_uint(table_name, selector, dissector_matching);
804 } else if (op == ':') {
805 for (i = selector; i < (guint64)selector + selector2; i++) {
806 dissector_change_uint(table_name, (guint32)i, dissector_matching);
808 } else { /* op == '-' */
809 for (i = selector; i <= selector2; i++) {
810 dissector_change_uint(table_name, (guint32)i, dissector_matching);
819 /* The selector for this table is a string. */
820 dissector_change_string(table_name, selector_str, dissector_matching);
824 /* There are currently no dissector tables with any types other
825 than the ones listed above. */
826 g_assert_not_reached();
828 g_free(decoded_param); /* "Decode As" rule has been successfully added */
833 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
834 const gchar *message, gpointer user_data)
836 /* ignore log message, if log_level isn't interesting based
837 upon the console log preferences.
838 If the preferences haven't been loaded loaded yet, display the
841 The default console_log_level preference value is such that only
842 ERROR, CRITICAL and WARNING level messages are processed;
843 MESSAGE, INFO and DEBUG level messages are ignored.
845 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
846 ERROR and CRITICAL level messages so the current code is a behavioral
847 change. The current behavior is the same as in Wireshark.
849 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
850 prefs.console_log_level != 0) {
854 g_log_default_handler(log_domain, log_level, message, user_data);
859 output_file_description(const char *fname)
861 char *save_file_string;
863 /* Get a string that describes what we're writing to */
864 if (strcmp(fname, "-") == 0) {
865 /* We're writing to the standard output */
866 save_file_string = g_strdup("standard output");
868 /* We're writing to a file with the name in save_file */
869 save_file_string = g_strdup_printf("file \"%s\"", fname);
871 return save_file_string;
875 print_current_user(void) {
876 gchar *cur_user, *cur_group;
878 if (started_with_special_privs()) {
879 cur_user = get_cur_username();
880 cur_group = get_cur_groupname();
881 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
882 cur_user, cur_group);
885 if (running_with_special_privs()) {
886 fprintf(stderr, " This could be dangerous.");
888 fprintf(stderr, "\n");
893 check_capture_privs(void) {
896 /* Warn the user if npf.sys isn't loaded. */
897 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
898 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
899 "capturing or\nlisting interfaces.\n");
905 show_version(GString *comp_info_str, GString *runtime_info_str)
907 printf("TShark " VERSION "%s\n"
914 wireshark_gitversion, get_copyright_info(), comp_info_str->str,
915 runtime_info_str->str);
919 main(int argc, char *argv[])
921 GString *comp_info_str;
922 GString *runtime_info_str;
923 char *init_progfile_dir_error;
925 struct option long_options[] = {
926 {(char *)"capture-comment", required_argument, NULL, LONGOPT_NUM_CAP_COMMENT },
929 gboolean arg_error = FALSE;
935 char *gpf_path, *pf_path;
936 char *gdp_path, *dp_path;
937 int gpf_open_errno, gpf_read_errno;
938 int pf_open_errno, pf_read_errno;
939 int gdp_open_errno, gdp_read_errno;
940 int dp_open_errno, dp_read_errno;
942 volatile int exit_status = 0;
944 gboolean list_link_layer_types = FALSE;
945 gboolean start_capture = FALSE;
950 gboolean capture_option_specified = FALSE;
952 gboolean quiet = FALSE;
953 #ifdef PCAP_NG_DEFAULT
954 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
956 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
958 volatile gboolean out_file_name_res = FALSE;
959 volatile int in_file_type = WTAP_TYPE_AUTO;
960 gchar *volatile cf_name = NULL;
961 gchar *rfilter = NULL;
962 gchar *dfilter = NULL;
963 #ifdef HAVE_PCAP_OPEN_DEAD
964 struct bpf_program fcode;
966 dfilter_t *rfcode = NULL;
967 dfilter_t *dfcode = NULL;
972 gchar *output_only = NULL;
974 #ifdef HAVE_PCAP_REMOTE
975 #define OPTSTRING_A "A:"
977 #define OPTSTRING_A ""
980 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
981 #define OPTSTRING_B "B:"
983 #define OPTSTRING_B ""
984 #endif /* _WIN32 or HAVE_PCAP_CREATE */
985 #else /* HAVE_LIBPCAP */
986 #define OPTSTRING_B ""
987 #endif /* HAVE_LIBPCAP */
989 #ifdef HAVE_PCAP_CREATE
990 #define OPTSTRING_I "I"
992 #define OPTSTRING_I ""
995 /* the leading - ensures that getopt() does not permute the argv[] entries
996 we have to make sure that the first getopt() preserves the content of argv[]
997 for the subsequent getopt_long() call */
998 #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:"
1000 static const char optstring[] = OPTSTRING;
1002 /* Assemble the compile-time version information string */
1003 comp_info_str = g_string_new("Compiled ");
1004 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
1006 /* Assemble the run-time version information string */
1007 runtime_info_str = g_string_new("Running ");
1008 get_runtime_version_info(runtime_info_str, NULL);
1010 /* Add it to the information to be reported on a crash. */
1011 ws_add_crash_info("TShark " VERSION "%s\n"
1016 wireshark_gitversion, comp_info_str->str, runtime_info_str->str);
1019 arg_list_utf_16to8(argc, argv);
1020 create_app_running_mutex();
1021 #if !GLIB_CHECK_VERSION(2,31,0)
1022 g_thread_init(NULL);
1027 * Get credential information for later use.
1029 init_process_policies();
1032 * Attempt to get the pathname of the executable file.
1034 init_progfile_dir_error = init_progfile_dir(argv[0], main);
1035 if (init_progfile_dir_error != NULL) {
1036 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1037 init_progfile_dir_error);
1041 * In order to have the -X opts assigned before the wslua machine starts
1042 * we need to call getopts before epan_init() gets called.
1045 optind_initial = optind;
1047 while ((opt = getopt(argc, argv, optstring)) != -1) {
1049 case 'C': /* Configuration Profile */
1050 if (profile_exists (optarg, FALSE)) {
1051 set_profile_name (optarg);
1053 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1057 case 'P': /* Print packet summary info even when writing to a file */
1058 print_packet_info = TRUE;
1059 print_summary = TRUE;
1061 case 'O': /* Only output these protocols */
1062 output_only = g_strdup(optarg);
1064 case 'V': /* Verbose */
1065 print_details = TRUE;
1066 print_packet_info = TRUE;
1068 case 'x': /* Print packet data in hex (and ASCII) */
1070 /* The user asked for hex output, so let's ensure they get it,
1071 * even if they're writing to a file.
1073 print_packet_info = TRUE;
1084 * Print packet summary information is the default, unless either -V or -x
1085 * were specified and -P was not. Note that this is new behavior, which
1086 * allows for the possibility of printing only hex/ascii output without
1087 * necessarily requiring that either the summary or details be printed too.
1089 if (print_summary == -1)
1090 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1092 optind = optind_initial;
1097 /** Send All g_log messages to our own handler **/
1101 G_LOG_LEVEL_CRITICAL|
1102 G_LOG_LEVEL_WARNING|
1103 G_LOG_LEVEL_MESSAGE|
1106 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1108 g_log_set_handler(NULL,
1109 (GLogLevelFlags)log_flags,
1110 tshark_log_handler, NULL /* user_data */);
1111 g_log_set_handler(LOG_DOMAIN_MAIN,
1112 (GLogLevelFlags)log_flags,
1113 tshark_log_handler, NULL /* user_data */);
1116 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1117 (GLogLevelFlags)log_flags,
1118 tshark_log_handler, NULL /* user_data */);
1119 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1120 (GLogLevelFlags)log_flags,
1121 tshark_log_handler, NULL /* user_data */);
1124 initialize_funnel_ops();
1126 init_report_err(failure_message, open_failure_message, read_failure_message,
1127 write_failure_message);
1130 capture_opts_init(&global_capture_opts);
1131 capture_session_init(&global_capture_session, (void *)&cfile);
1134 timestamp_set_type(TS_RELATIVE);
1135 timestamp_set_precision(TS_PREC_AUTO);
1136 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1138 init_open_routines();
1141 /* Register all the plugin types we have. */
1142 epan_register_plugin_types(); /* Types known to libwireshark */
1143 wtap_register_plugin_types(); /* Types known to libwiretap */
1145 /* Scan for plugins. This does *not* call their registration routines;
1146 that's done later. */
1149 /* Register all libwiretap plugin modules. */
1150 register_all_wiretap_modules();
1153 /* Register all dissectors; we must do this before checking for the
1154 "-G" flag, as the "-G" flag dumps information registered by the
1155 dissectors, and we must do it before we read the preferences, in
1156 case any dissectors register preferences. */
1157 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1159 /* Register all tap listeners; we do this before we parse the arguments,
1160 as the "-z" argument can specify a registered tap. */
1162 /* we register the plugin taps before the other taps because
1163 stats_tree taps plugins will be registered as tap listeners
1164 by stats_tree_stat.c and need to registered before that */
1166 register_all_plugin_tap_listeners();
1168 register_all_tap_listeners();
1170 /* If invoked with the "-G" flag, we dump out information based on
1171 the argument to the "-G" flag; if no argument is specified,
1172 for backwards compatibility we dump out a glossary of display
1175 XXX - we do this here, for now, to support "-G" with no arguments.
1176 If none of our build or other processes uses "-G" with no arguments,
1177 we can just process it with the other arguments. */
1178 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1179 proto_initialize_all_prefixes();
1182 proto_registrar_dump_fields();
1184 if (strcmp(argv[2], "column-formats") == 0)
1185 column_dump_column_formats();
1186 else if (strcmp(argv[2], "currentprefs") == 0) {
1187 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1188 &pf_open_errno, &pf_read_errno, &pf_path);
1191 else if (strcmp(argv[2], "decodes") == 0)
1192 dissector_dump_decodes();
1193 else if (strcmp(argv[2], "defaultprefs") == 0)
1195 else if (strcmp(argv[2], "fields") == 0)
1196 proto_registrar_dump_fields();
1197 else if (strcmp(argv[2], "ftypes") == 0)
1198 proto_registrar_dump_ftypes();
1199 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1200 dissector_dump_heur_decodes();
1201 else if (strcmp(argv[2], "plugins") == 0) {
1206 wslua_plugins_dump_all();
1209 else if (strcmp(argv[2], "protocols") == 0)
1210 proto_registrar_dump_protocols();
1211 else if (strcmp(argv[2], "values") == 0)
1212 proto_registrar_dump_values();
1213 else if (strcmp(argv[2], "?") == 0)
1214 glossary_option_help();
1215 else if (strcmp(argv[2], "-?") == 0)
1216 glossary_option_help();
1218 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1225 /* Set the C-language locale to the native environment. */
1226 setlocale(LC_ALL, "");
1228 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1229 &pf_open_errno, &pf_read_errno, &pf_path);
1230 if (gpf_path != NULL) {
1231 if (gpf_open_errno != 0) {
1232 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1233 pf_path, g_strerror(gpf_open_errno));
1235 if (gpf_read_errno != 0) {
1236 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1237 pf_path, g_strerror(gpf_read_errno));
1240 if (pf_path != NULL) {
1241 if (pf_open_errno != 0) {
1242 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1243 g_strerror(pf_open_errno));
1245 if (pf_read_errno != 0) {
1246 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1247 pf_path, g_strerror(pf_read_errno));
1253 /* Read the disabled protocols file. */
1254 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1255 &dp_path, &dp_open_errno, &dp_read_errno);
1256 if (gdp_path != NULL) {
1257 if (gdp_open_errno != 0) {
1258 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1259 gdp_path, g_strerror(gdp_open_errno));
1261 if (gdp_read_errno != 0) {
1262 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1263 gdp_path, g_strerror(gdp_read_errno));
1267 if (dp_path != NULL) {
1268 if (dp_open_errno != 0) {
1270 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1271 g_strerror(dp_open_errno));
1273 if (dp_read_errno != 0) {
1275 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1276 g_strerror(dp_read_errno));
1281 check_capture_privs();
1283 cap_file_init(&cfile);
1285 /* Print format defaults to this. */
1286 print_format = PR_FMT_TEXT;
1288 output_fields = output_fields_new();
1290 /* Now get our args */
1291 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1293 case '2': /* Perform two pass analysis */
1294 perform_two_pass_analysis = TRUE;
1296 case 'a': /* autostop criteria */
1297 case 'b': /* Ringbuffer option */
1298 case 'c': /* Capture x packets */
1299 case 'f': /* capture filter */
1300 case 'g': /* enable group read access on file(s) */
1301 case 'i': /* Use interface x */
1302 case 'p': /* Don't capture in promiscuous mode */
1303 #ifdef HAVE_PCAP_REMOTE
1304 case 'A': /* Authentication */
1306 #ifdef HAVE_PCAP_CREATE
1307 case 'I': /* Capture in monitor mode, if available */
1309 case 's': /* Set the snapshot (capture) length */
1310 case 'w': /* Write to capture file x */
1311 case 'y': /* Set the pcap data link type */
1312 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1313 #if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
1314 case 'B': /* Buffer size */
1315 #endif /* _WIN32 or HAVE_PCAP_CREATE */
1317 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1322 capture_option_specified = TRUE;
1327 /* Configuration profile settings were already processed just ignore them this time*/
1329 case 'd': /* Decode as rule */
1330 if (!add_decode_as(optarg))
1333 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1334 case 'K': /* Kerberos keytab file */
1335 read_keytab_file(optarg);
1338 case 'D': /* Print a list of capture devices and exit */
1340 if_list = capture_interface_list(&err, &err_str,NULL);
1341 if (if_list == NULL) {
1343 case CANT_GET_INTERFACE_LIST:
1344 case DONT_HAVE_PCAP:
1345 cmdarg_err("%s", err_str);
1349 case NO_INTERFACES_FOUND:
1350 cmdarg_err("There are no interfaces on which a capture can be done");
1355 capture_opts_print_interfaces(if_list);
1356 free_interface_list(if_list);
1359 capture_option_specified = TRUE;
1365 output_fields_add(output_fields, optarg);
1369 if (!output_fields_set_option(output_fields, optarg)) {
1370 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1371 output_fields_list_options(stderr);
1376 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1377 if (out_file_type < 0) {
1378 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1379 list_capture_types();
1383 case 'W': /* Select extra information to save in our capture file */
1384 /* This is patterned after the -N flag which may not be the best idea. */
1385 if (strchr(optarg, 'n')) {
1386 out_file_name_res = TRUE;
1388 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1389 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1393 case 'H': /* Read address to name mappings from a hosts file */
1394 if (! add_hosts_file(optarg))
1396 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1399 out_file_name_res = TRUE;
1402 case 'h': /* Print help and exit */
1406 case 'l': /* "Line-buffer" standard output */
1407 /* This isn't line-buffering, strictly speaking, it's just
1408 flushing the standard output after the information for
1409 each packet is printed; however, that should be good
1410 enough for all the purposes to which "-l" is put (and
1411 is probably actually better for "-V", as it does fewer
1414 See the comment in "process_packet()" for an explanation of
1415 why we do that, and why we don't just use "setvbuf()" to
1416 make the standard output line-buffered (short version: in
1417 Windows, "line-buffered" is the same as "fully-buffered",
1418 and the output buffer is only flushed when it fills up). */
1419 line_buffered = TRUE;
1421 case 'L': /* Print list of link-layer types and exit */
1423 list_link_layer_types = TRUE;
1425 capture_option_specified = TRUE;
1429 case 'n': /* No name resolution */
1430 gbl_resolv_flags.mac_name = FALSE;
1431 gbl_resolv_flags.network_name = FALSE;
1432 gbl_resolv_flags.transport_name = FALSE;
1433 gbl_resolv_flags.concurrent_dns = FALSE;
1435 case 'N': /* Select what types of addresses/port #s to resolve */
1436 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1437 if (badopt != '\0') {
1438 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1440 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1441 "\t'm' to enable MAC address resolution\n"
1442 "\t'n' to enable network address resolution\n"
1443 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1444 "\t for network address resolution\n"
1445 "\t't' to enable transport-layer port number resolution");
1449 case 'o': /* Override preference from command line */
1450 switch (prefs_set_pref(optarg)) {
1455 case PREFS_SET_SYNTAX_ERR:
1456 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1460 case PREFS_SET_NO_SUCH_PREF:
1461 case PREFS_SET_OBSOLETE:
1462 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1467 case 'q': /* Quiet */
1470 case 'Q': /* Really quiet */
1472 really_quiet = TRUE;
1474 case 'r': /* Read capture file x */
1475 cf_name = g_strdup(optarg);
1477 case 'R': /* Read file filter */
1481 /* already processed; just ignore it now */
1483 case 'S': /* Set the line Separator to be printed between packets */
1486 case 't': /* Time stamp type */
1487 if (strcmp(optarg, "r") == 0)
1488 timestamp_set_type(TS_RELATIVE);
1489 else if (strcmp(optarg, "a") == 0)
1490 timestamp_set_type(TS_ABSOLUTE);
1491 else if (strcmp(optarg, "ad") == 0)
1492 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1493 else if (strcmp(optarg, "adoy") == 0)
1494 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1495 else if (strcmp(optarg, "d") == 0)
1496 timestamp_set_type(TS_DELTA);
1497 else if (strcmp(optarg, "dd") == 0)
1498 timestamp_set_type(TS_DELTA_DIS);
1499 else if (strcmp(optarg, "e") == 0)
1500 timestamp_set_type(TS_EPOCH);
1501 else if (strcmp(optarg, "u") == 0)
1502 timestamp_set_type(TS_UTC);
1503 else if (strcmp(optarg, "ud") == 0)
1504 timestamp_set_type(TS_UTC_WITH_YMD);
1505 else if (strcmp(optarg, "udoy") == 0)
1506 timestamp_set_type(TS_UTC_WITH_YDOY);
1508 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1509 cmdarg_err_cont("\t\"a\" for absolute\n"
1510 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1511 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1512 "\t\"d\" for delta\n"
1513 "\t\"dd\" for delta displayed\n"
1514 "\t\"e\" for epoch\n"
1515 "\t\"r\" for relative\n"
1516 "\t\"u\" for absolute UTC\n"
1517 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1518 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1522 case 'T': /* printing Type */
1523 print_packet_info = TRUE;
1524 if (strcmp(optarg, "text") == 0) {
1525 output_action = WRITE_TEXT;
1526 print_format = PR_FMT_TEXT;
1527 } else if (strcmp(optarg, "ps") == 0) {
1528 output_action = WRITE_TEXT;
1529 print_format = PR_FMT_PS;
1530 } else if (strcmp(optarg, "pdml") == 0) {
1531 output_action = WRITE_XML;
1532 print_details = TRUE; /* Need details */
1533 print_summary = FALSE; /* Don't allow summary */
1534 } else if (strcmp(optarg, "psml") == 0) {
1535 output_action = WRITE_XML;
1536 print_details = FALSE; /* Don't allow details */
1537 print_summary = TRUE; /* Need summary */
1538 } else if (strcmp(optarg, "fields") == 0) {
1539 output_action = WRITE_FIELDS;
1540 print_details = TRUE; /* Need full tree info */
1541 print_summary = FALSE; /* Don't allow summary */
1543 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1544 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1545 "\t specified by the -E option.\n"
1546 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1547 "\t details of a decoded packet. This information is equivalent to\n"
1548 "\t the packet details printed with the -V flag.\n"
1549 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1550 "\t the packets, or a multi-line view of the details of each of\n"
1551 "\t the packets, depending on whether the -V flag was specified.\n"
1552 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1553 "\t summary information of a decoded packet. This information is\n"
1554 "\t equivalent to the information shown in the one-line summary\n"
1555 "\t printed by default.\n"
1556 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1557 "\t packets, or a multi-line view of the details of each of the\n"
1558 "\t packets, depending on whether the -V flag was specified.\n"
1559 "\t This is the default.");
1563 case 'u': /* Seconds type */
1564 if (strcmp(optarg, "s") == 0)
1565 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1566 else if (strcmp(optarg, "hms") == 0)
1567 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1569 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1570 cmdarg_err_cont("\t\"s\" for seconds\n"
1571 "\t\"hms\" for hours, minutes and seconds");
1575 case 'v': /* Show version and exit */
1577 show_version(comp_info_str, runtime_info_str);
1578 g_string_free(comp_info_str, TRUE);
1579 g_string_free(runtime_info_str, TRUE);
1580 /* We don't really have to cleanup here, but it's a convenient way to test
1581 * start-up and shut-down of the epan library without any UI-specific
1582 * cruft getting in the way. Makes the results of running
1583 * $ ./tools/valgrind-wireshark -n
1584 * much more useful. */
1588 case 'O': /* Only output these protocols */
1589 /* already processed; just ignore it now */
1591 case 'V': /* Verbose */
1592 /* already processed; just ignore it now */
1594 case 'x': /* Print packet data in hex (and ASCII) */
1595 /* already processed; just ignore it now */
1603 /* We won't call the init function for the stat this soon
1604 as it would disallow MATE's fields (which are registered
1605 by the preferences set callback) from being used as
1606 part of a tap filter. Instead, we just add the argument
1607 to a list of stat arguments. */
1608 if (!process_stat_cmd_arg(optarg)) {
1609 if (strcmp("help", optarg)==0) {
1610 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1611 list_stat_cmd_args();
1614 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1615 list_stat_cmd_args();
1620 case '?': /* Bad flag - print usage message */
1623 list_capture_types();
1633 /* If we specified output fields, but not the output field type... */
1634 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1635 cmdarg_err("Output fields were specified with \"-e\", "
1636 "but \"-Tfields\" was not specified.");
1638 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1639 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1640 "specified with \"-e\".");
1645 /* If no capture filter or display filter has been specified, and there are
1646 still command-line arguments, treat them as the tokens of a capture
1647 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1648 flag was specified. */
1649 if (optind < argc) {
1650 if (cf_name != NULL) {
1651 if (dfilter != NULL) {
1652 cmdarg_err("Display filters were specified both with \"-d\" "
1653 "and with additional command-line arguments.");
1656 dfilter = get_args_as_string(argc, argv, optind);
1661 if (global_capture_opts.default_options.cfilter) {
1662 cmdarg_err("A default capture filter was specified both with \"-f\""
1663 " and with additional command-line arguments.");
1666 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1667 interface_options interface_opts;
1668 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1669 if (interface_opts.cfilter == NULL) {
1670 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1671 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1672 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1674 cmdarg_err("A capture filter was specified both with \"-f\""
1675 " and with additional command-line arguments.");
1679 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1681 capture_option_specified = TRUE;
1687 if (!global_capture_opts.saving_to_file) {
1688 /* We're not saving the capture to a file; if "-q" wasn't specified,
1689 we should print packet information */
1691 print_packet_info = TRUE;
1693 /* We're saving to a file; if we're writing to the standard output.
1694 and we'll also be writing dissected packets to the standard
1695 output, reject the request. At best, we could redirect that
1696 to the standard error; we *can't* write both to the standard
1697 output and have either of them be useful. */
1698 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1699 cmdarg_err("You can't write both raw packet data and dissected packets"
1700 " to the standard output.");
1705 /* We're not saving the capture to a file; if "-q" wasn't specified,
1706 we should print packet information */
1708 print_packet_info = TRUE;
1711 #ifndef HAVE_LIBPCAP
1712 if (capture_option_specified)
1713 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1721 if (output_action != WRITE_TEXT) {
1722 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1727 if (output_only != NULL) {
1730 if (!print_details) {
1731 cmdarg_err("-O requires -V");
1735 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1736 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1737 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1741 if (rfilter != NULL && !perform_two_pass_analysis) {
1742 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1747 if (list_link_layer_types) {
1748 /* We're supposed to list the link-layer types for an interface;
1749 did the user also specify a capture file to be read? */
1751 /* Yes - that's bogus. */
1752 cmdarg_err("You can't specify -L and a capture file to be read.");
1755 /* No - did they specify a ring buffer option? */
1756 if (global_capture_opts.multi_files_on) {
1757 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1763 * "-r" was specified, so we're reading a capture file.
1764 * Capture options don't apply here.
1767 /* We don't support capture filters when reading from a capture file
1768 (the BPF compiler doesn't support all link-layer types that we
1769 support in capture files we read). */
1770 if (global_capture_opts.default_options.cfilter) {
1771 cmdarg_err("Only read filters, not capture filters, "
1772 "can be specified when reading a capture file.");
1775 if (global_capture_opts.multi_files_on) {
1776 cmdarg_err("Multiple capture files requested, but "
1777 "a capture isn't being done.");
1780 if (global_capture_opts.has_file_duration) {
1781 cmdarg_err("Switching capture files after a time interval was specified, but "
1782 "a capture isn't being done.");
1785 if (global_capture_opts.has_ring_num_files) {
1786 cmdarg_err("A ring buffer of capture files was specified, but "
1787 "a capture isn't being done.");
1790 if (global_capture_opts.has_autostop_files) {
1791 cmdarg_err("A maximum number of capture files was specified, but "
1792 "a capture isn't being done.");
1795 if (global_capture_opts.capture_comment) {
1796 cmdarg_err("A capture comment was specified, but "
1797 "a capture isn't being done.\nThere's no support for adding "
1798 "a capture comment to an existing capture file.");
1802 /* Note: TShark now allows the restriction of a _read_ file by packet count
1803 * and byte count as well as a write file. Other autostop options remain valid
1804 * only for a write file.
1806 if (global_capture_opts.has_autostop_duration) {
1807 cmdarg_err("A maximum capture time was specified, but "
1808 "a capture isn't being done.");
1813 * "-r" wasn't specified, so we're doing a live capture.
1815 if (perform_two_pass_analysis) {
1816 /* Two-pass analysis doesn't work with live capture since it requires us
1817 * to buffer packets until we've read all of them, but a live capture
1818 * has no useful/meaningful definition of "all" */
1819 cmdarg_err("Live captures do not support two-pass analysis.");
1823 if (global_capture_opts.saving_to_file) {
1824 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1826 /* When capturing, we only support writing pcap or pcap-ng format. */
1827 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1828 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1829 cmdarg_err("Live captures can only be saved in libpcap format.");
1832 if (global_capture_opts.capture_comment &&
1833 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1834 cmdarg_err("A capture comment can only be written to a pcapng file.");
1837 if (global_capture_opts.multi_files_on) {
1838 /* Multiple-file mode doesn't work under certain conditions:
1839 a) it doesn't work if you're writing to the standard output;
1840 b) it doesn't work if you're writing to a pipe;
1842 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1843 cmdarg_err("Multiple capture files requested, but "
1844 "the capture is being written to the standard output.");
1847 if (global_capture_opts.output_to_pipe) {
1848 cmdarg_err("Multiple capture files requested, but "
1849 "the capture file is a pipe.");
1852 if (!global_capture_opts.has_autostop_filesize &&
1853 !global_capture_opts.has_file_duration) {
1854 cmdarg_err("Multiple capture files requested, but "
1855 "no maximum capture file size or duration was specified.");
1859 /* Currently, we don't support read or display filters when capturing
1860 and saving the packets. */
1861 if (rfilter != NULL) {
1862 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1865 if (dfilter != NULL) {
1866 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1870 /* They didn't specify a "-w" flag, so we won't be saving to a
1871 capture file. Check for options that only make sense if
1872 we're saving to a file. */
1873 if (global_capture_opts.has_autostop_filesize) {
1874 cmdarg_err("Maximum capture file size specified, but "
1875 "capture isn't being saved to a file.");
1878 if (global_capture_opts.multi_files_on) {
1879 cmdarg_err("Multiple capture files requested, but "
1880 "the capture isn't being saved to a file.");
1883 if (global_capture_opts.capture_comment) {
1884 cmdarg_err("A capture comment was specified, but "
1885 "the capture isn't being saved to a file.");
1894 /* Start windows sockets */
1895 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1898 /* Notify all registered modules that have had any of their preferences
1899 changed either from one of the preferences file or from the command
1900 line that their preferences have changed. */
1903 /* At this point MATE will have registered its field array so we can
1904 have a tap filter with one of MATE's late-registered fields as part
1905 of the filter. We can now process all the "-z" arguments. */
1906 start_requested_stats();
1909 /* We currently don't support taps, or printing dissected packets,
1910 if we're writing to a pipe. */
1911 if (global_capture_opts.saving_to_file &&
1912 global_capture_opts.output_to_pipe) {
1913 if (tap_listeners_require_dissection()) {
1914 cmdarg_err("Taps aren't supported when saving to a pipe.");
1917 if (print_packet_info) {
1918 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
1924 if (ex_opt_count("read_format") > 0) {
1925 const gchar* name = ex_opt_get_next("read_format");
1926 in_file_type = open_info_name_to_type(name);
1927 if (in_file_type == WTAP_TYPE_AUTO) {
1928 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
1929 list_read_capture_types();
1934 /* disabled protocols as per configuration file */
1935 if (gdp_path == NULL && dp_path == NULL) {
1936 set_disabled_protos_list();
1939 /* Build the column format array */
1940 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
1943 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1944 capture_opts_trim_ring_num_files(&global_capture_opts);
1947 if (rfilter != NULL) {
1948 if (!dfilter_compile(rfilter, &rfcode)) {
1949 cmdarg_err("%s", dfilter_error_msg);
1951 #ifdef HAVE_PCAP_OPEN_DEAD
1955 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1957 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1959 " Note: That read filter code looks like a valid capture filter;\n"
1960 " maybe you mixed them up?");
1969 cfile.rfcode = rfcode;
1971 if (dfilter != NULL) {
1972 if (!dfilter_compile(dfilter, &dfcode)) {
1973 cmdarg_err("%s", dfilter_error_msg);
1975 #ifdef HAVE_PCAP_OPEN_DEAD
1979 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1981 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
1983 " Note: That display filter code looks like a valid capture filter;\n"
1984 " maybe you mixed them up?");
1993 cfile.dfcode = dfcode;
1995 if (print_packet_info) {
1996 /* If we're printing as text or PostScript, we have
1997 to create a print stream. */
1998 if (output_action == WRITE_TEXT) {
1999 switch (print_format) {
2002 print_stream = print_stream_text_stdio_new(stdout);
2006 print_stream = print_stream_ps_stdio_new(stdout);
2010 g_assert_not_reached();
2015 /* We have to dissect each packet if:
2017 we're printing information about each packet;
2019 we're using a read filter on the packets;
2021 we're using a display filter on the packets;
2023 we're using any taps that need dissection. */
2024 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2028 * We're reading a capture file.
2032 * Immediately relinquish any special privileges we have; we must not
2033 * be allowed to read any capture files the user running TShark
2036 relinquish_special_privs_perm();
2037 print_current_user();
2039 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2044 /* Set timestamp precision; there should arguably be a command-line
2045 option to let the user set this. */
2046 switch(wtap_file_tsprecision(cfile.wth)) {
2047 case(WTAP_FILE_TSPREC_SEC):
2048 timestamp_set_precision(TS_PREC_AUTO_SEC);
2050 case(WTAP_FILE_TSPREC_DSEC):
2051 timestamp_set_precision(TS_PREC_AUTO_DSEC);
2053 case(WTAP_FILE_TSPREC_CSEC):
2054 timestamp_set_precision(TS_PREC_AUTO_CSEC);
2056 case(WTAP_FILE_TSPREC_MSEC):
2057 timestamp_set_precision(TS_PREC_AUTO_MSEC);
2059 case(WTAP_FILE_TSPREC_USEC):
2060 timestamp_set_precision(TS_PREC_AUTO_USEC);
2062 case(WTAP_FILE_TSPREC_NSEC):
2063 timestamp_set_precision(TS_PREC_AUTO_NSEC);
2066 g_assert_not_reached();
2069 /* Process the packets in the file */
2072 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2073 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2074 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2076 err = load_cap_file(&cfile, NULL, out_file_type, out_file_name_res, 0, 0);
2079 CATCH(OutOfMemoryError) {
2083 "Sorry, but TShark has to terminate now!\n"
2085 "Some infos / workarounds can be found at:\n"
2086 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2091 /* We still dump out the results of taps, etc., as we might have
2092 read some packets; however, we exit with an error status. */
2096 /* No capture file specified, so we're supposed to do a live capture
2097 or get a list of link-layer types for a live capture device;
2098 do we have support for live captures? */
2100 /* if no interface was specified, pick a default */
2101 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2102 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2103 if (exit_status != 0)
2106 /* if requested, list the link layer types and exit */
2107 if (list_link_layer_types) {
2110 /* Get the list of link-layer types for the capture devices. */
2111 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2112 interface_options interface_opts;
2113 if_capabilities_t *caps;
2115 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2116 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, &err_str, NULL);
2118 cmdarg_err("%s", err_str);
2122 if (caps->data_link_types == NULL) {
2123 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2126 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2127 free_if_capabilities(caps);
2133 * If the standard error isn't a terminal, don't print packet counts,
2134 * as they won't show up on the user's terminal and they'll get in
2135 * the way of error messages in the file (to which we assume the
2136 * standard error was redirected; if it's redirected to the null
2137 * device, there's no point in printing packet counts anyway).
2139 * Otherwise, if we're printing packet information and the standard
2140 * output is a terminal (which we assume means the standard output and
2141 * error are going to the same terminal), don't print packet counts,
2142 * as they'll get in the way of the packet information.
2144 * Otherwise, if the user specified -q, don't print packet counts.
2146 * Otherwise, print packet counts.
2148 * XXX - what if the user wants to do a live capture, doesn't want
2149 * to save it to a file, doesn't want information printed for each
2150 * packet, does want some "-z" statistic, and wants packet counts
2151 * so they know whether they're seeing any packets? -q will
2152 * suppress the information printed for each packet, but it'll
2153 * also suppress the packet counts.
2155 if (!isatty(fileno(stderr)))
2156 print_packet_counts = FALSE;
2157 else if (print_packet_info && isatty(fileno(stdout)))
2158 print_packet_counts = FALSE;
2160 print_packet_counts = FALSE;
2162 print_packet_counts = TRUE;
2164 if (print_packet_info) {
2165 if (!write_preamble(NULL)) {
2166 show_print_file_io_error(errno);
2171 /* For now, assume libpcap gives microsecond precision. */
2172 timestamp_set_precision(TS_PREC_AUTO_USEC);
2175 * XXX - this returns FALSE if an error occurred, but it also
2176 * returns FALSE if the capture stops because a time limit
2177 * was reached (and possibly other limits), so we can't assume
2178 * it means an error.
2180 * The capture code is a bit twisty, so it doesn't appear to
2181 * be an easy fix. We just ignore the return value for now.
2182 * Instead, pass on the exit status from the capture child.
2185 exit_status = global_capture_session.fork_child_status;
2187 if (print_packet_info) {
2188 if (!write_finale()) {
2190 show_print_file_io_error(err);
2194 /* No - complain. */
2195 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2202 if (cfile.frames != NULL) {
2203 free_frame_data_sequence(cfile.frames);
2204 cfile.frames = NULL;
2207 draw_tap_listeners(TRUE);
2208 funnel_dump_all_text_windows();
2209 epan_free(cfile.epan);
2212 output_fields_free(output_fields);
2213 output_fields = NULL;
2218 /*#define USE_BROKEN_G_MAIN_LOOP*/
2220 #ifdef USE_BROKEN_G_MAIN_LOOP
2223 gboolean loop_running = FALSE;
2225 guint32 packet_count = 0;
2228 typedef struct pipe_input_tag {
2232 pipe_input_cb_t input_cb;
2233 guint pipe_input_id;
2235 GMutex *callback_running;
2239 static pipe_input_t pipe_input;
2242 /* The timer has expired, see if there's stuff to read from the pipe,
2243 if so, do the callback */
2245 pipe_timer_cb(gpointer data)
2251 pipe_input_t *pipe_input_p = data;
2252 gint iterations = 0;
2254 g_mutex_lock (pipe_input_p->callback_running);
2256 /* try to read data from the pipe only 5 times, to avoid blocking */
2257 while(iterations < 5) {
2258 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2260 /* Oddly enough although Named pipes don't work on win9x,
2261 PeekNamedPipe does !!! */
2262 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2263 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2265 /* Get the child process exit status */
2266 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2269 /* If the Peek returned an error, or there are bytes to be read
2270 or the childwatcher thread has terminated then call the normal
2272 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2274 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2276 /* And call the real handler */
2277 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2278 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2279 /* pipe closed, return false so that the timer is stopped */
2280 g_mutex_unlock (pipe_input_p->callback_running);
2285 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2286 /* No data, stop now */
2293 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2295 g_mutex_unlock (pipe_input_p->callback_running);
2297 /* we didn't stopped the timer, so let it run */
2304 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
2307 pipe_input.source = source;
2308 pipe_input.child_process = child_process;
2309 pipe_input.user_data = user_data;
2310 pipe_input.input_cb = input_cb;
2313 #if GLIB_CHECK_VERSION(2,31,0)
2314 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2315 g_mutex_init(pipe_input.callback_running);
2317 pipe_input.callback_running = g_mutex_new();
2319 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2320 do this but that doesn't cover all win32 platforms. GTK can do
2321 this but doesn't seem to work over processes. Attempt to do
2322 something similar here, start a timer and check for data on every
2324 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2325 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2329 static const nstime_t *
2330 tshark_get_frame_ts(void *data, guint32 frame_num)
2332 capture_file *cf = (capture_file *) data;
2334 if (ref && ref->num == frame_num)
2335 return &ref->abs_ts;
2337 if (prev_dis && prev_dis->num == frame_num)
2338 return &prev_dis->abs_ts;
2340 if (prev_cap && prev_cap->num == frame_num)
2341 return &prev_cap->abs_ts;
2344 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2346 return (fd) ? &fd->abs_ts : NULL;
2353 tshark_epan_new(capture_file *cf)
2355 epan_t *epan = epan_new();
2358 epan->get_frame_ts = tshark_get_frame_ts;
2359 epan->get_interface_name = cap_file_get_interface_name;
2360 epan->get_user_comment = NULL;
2371 GString *str = g_string_new("");
2372 #ifdef USE_TSHARK_SELECT
2376 struct sigaction action, oldaction;
2380 * XXX - dropping privileges is still required, until code cleanup is done
2382 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
2383 * when it's done, we don't need special privileges to run tshark at all,
2384 * therefore we don't need to drop these privileges
2385 * The only thing we might want to keep is a warning if tshark is run as root,
2386 * as it's no longer necessary and potentially dangerous.
2388 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
2389 * We've opened the capture device, so we shouldn't need any special
2390 * privileges any more; relinquish those privileges.
2392 * XXX - if we have saved set-user-ID support, we should give up those
2393 * privileges immediately, and then reclaim them long enough to get
2394 * a list of network interfaces and to open one, and then give them
2395 * up again, so that stuff we do while processing the argument list,
2396 * reading the user's preferences, loading and starting plugins
2397 * (especially *user* plugins), etc. is done with the user's privileges,
2398 * not special privileges.
2400 relinquish_special_privs_perm();
2401 print_current_user();
2403 /* Create new dissection section. */
2404 epan_free(cfile.epan);
2405 cfile.epan = tshark_epan_new(&cfile);
2408 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2409 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2411 /* Catch SIGINT and SIGTERM and, if we get either of them,
2412 clean up and exit. If SIGHUP isn't being ignored, catch
2413 it too and, if we get it, clean up and exit.
2415 We restart any read that was in progress, so that it doesn't
2416 disrupt reading from the sync pipe. The signal handler tells
2417 the capture child to finish; it will report that it finished,
2418 or will exit abnormally, so we'll stop reading from the sync
2419 pipe, pick up the exit status, and quit. */
2420 memset(&action, 0, sizeof(action));
2421 action.sa_handler = capture_cleanup;
2422 action.sa_flags = SA_RESTART;
2423 sigemptyset(&action.sa_mask);
2424 sigaction(SIGTERM, &action, NULL);
2425 sigaction(SIGINT, &action, NULL);
2426 sigaction(SIGHUP, NULL, &oldaction);
2427 if (oldaction.sa_handler == SIG_DFL)
2428 sigaction(SIGHUP, &action, NULL);
2431 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2432 quiet mode, report the number of packets we've captured.
2434 Again, restart any read that was in progress, so that it doesn't
2435 disrupt reading from the sync pipe. */
2436 action.sa_handler = report_counts_siginfo;
2437 action.sa_flags = SA_RESTART;
2438 sigemptyset(&action.sa_mask);
2439 sigaction(SIGINFO, &action, NULL);
2440 #endif /* SIGINFO */
2443 global_capture_session.state = CAPTURE_PREPARING;
2445 /* Let the user know which interfaces were chosen. */
2446 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2447 interface_options interface_opts;
2449 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2450 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2451 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2452 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2455 if (global_capture_opts.ifaces->len < 2)
2457 if (global_capture_opts.ifaces->len < 4)
2460 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2461 interface_options interface_opts;
2463 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2465 if (global_capture_opts.ifaces->len > 2) {
2466 g_string_append_printf(str, ",");
2468 g_string_append_printf(str, " ");
2469 if (i == global_capture_opts.ifaces->len - 1) {
2470 g_string_append_printf(str, "and ");
2473 g_string_append_printf(str, "'%s'", interface_opts.descr);
2476 g_string_append_printf(str, "%u interfaces", global_capture_opts.ifaces->len);
2478 if (really_quiet == FALSE)
2479 fprintf(stderr, "Capturing on %s\n", str->str);
2481 g_string_free(str, TRUE);
2483 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2488 /* the actual capture loop
2490 * XXX - glib doesn't seem to provide any event based loop handling.
2492 * XXX - for whatever reason,
2493 * calling g_main_loop_new() ends up in 100% cpu load.
2495 * But that doesn't matter: in UNIX we can use select() to find an input
2496 * source with something to do.
2498 * But that doesn't matter because we're in a CLI (that doesn't need to
2499 * update a GUI or something at the same time) so it's OK if we block
2500 * trying to read from the pipe.
2502 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2503 * wrong (but I leave it there in case I am...).
2506 #ifdef USE_TSHARK_SELECT
2508 FD_SET(pipe_input.source, &readfds);
2511 loop_running = TRUE;
2515 while (loop_running)
2517 #ifdef USE_TSHARK_SELECT
2518 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2522 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2524 } else if (ret == 1) {
2526 /* Call the real handler */
2527 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2528 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2531 #ifdef USE_TSHARK_SELECT
2536 CATCH(OutOfMemoryError) {
2540 "Sorry, but TShark has to terminate now!\n"
2542 "Some infos / workarounds can be found at:\n"
2543 "http://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2550 /* capture child detected an error */
2552 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2554 cmdarg_err("%s", error_msg);
2555 cmdarg_err_cont("%s", secondary_error_msg);
2559 /* capture child detected an capture filter related error */
2561 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2563 capture_options *capture_opts = cap_session->capture_opts;
2564 dfilter_t *rfcode = NULL;
2565 interface_options interface_opts;
2567 g_assert(i < capture_opts->ifaces->len);
2568 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2570 if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
2572 "Invalid capture filter \"%s\" for interface '%s'!\n"
2574 "That string looks like a valid display filter; however, it isn't a valid\n"
2575 "capture filter (%s).\n"
2577 "Note that display filters and capture filters don't have the same syntax,\n"
2578 "so you can't use most display filter expressions as capture filters.\n"
2580 "See the User's Guide for a description of the capture filter syntax.",
2581 interface_opts.cfilter, interface_opts.descr, error_message);
2582 dfilter_free(rfcode);
2585 "Invalid capture filter \"%s\" for interface '%s'!\n"
2587 "That string isn't a valid capture filter (%s).\n"
2588 "See the User's Guide for a description of the capture filter syntax.",
2589 interface_opts.cfilter, interface_opts.descr, error_message);
2594 /* capture child tells us we have a new (or the first) capture file */
2596 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2598 capture_options *capture_opts = cap_session->capture_opts;
2599 gboolean is_tempfile;
2602 if (cap_session->state == CAPTURE_PREPARING) {
2603 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
2605 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2607 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2609 /* free the old filename */
2610 if (capture_opts->save_file != NULL) {
2612 /* we start a new capture file, close the old one (if we had one before) */
2613 if ( ((capture_file *) cap_session->cf)->state != FILE_CLOSED) {
2614 if ( ((capture_file *) cap_session->cf)->wth != NULL) {
2615 wtap_close(((capture_file *) cap_session->cf)->wth);
2616 ((capture_file *) cap_session->cf)->wth = NULL;
2618 ((capture_file *) cap_session->cf)->state = FILE_CLOSED;
2621 g_free(capture_opts->save_file);
2622 is_tempfile = FALSE;
2624 /* we didn't had a save_file before, must be a tempfile */
2628 /* save the new filename */
2629 capture_opts->save_file = g_strdup(new_file);
2631 /* if we are in real-time mode, open the new file now */
2632 if (do_dissection) {
2633 /* this is probably unecessary, but better safe than sorry */
2634 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2635 /* Attempt to open the capture file and set up to read from it. */
2636 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2640 /* Don't unlink (delete) the save file - leave it around,
2641 for debugging purposes. */
2642 g_free(capture_opts->save_file);
2643 capture_opts->save_file = NULL;
2648 cap_session->state = CAPTURE_RUNNING;
2654 /* capture child tells us we have new records to read */
2656 capture_input_new_records(capture_session *cap_session, int to_read)
2662 capture_file *cf = (capture_file *)cap_session->cf;
2663 gboolean filtering_tap_listeners;
2668 * Prevent a SIGINFO handler from writing to the standard error while
2669 * we're doing so or writing to the standard output; instead, have it
2670 * just set a flag telling us to print that information when we're done.
2673 #endif /* SIGINFO */
2675 /* Do we have any tap listeners with filters? */
2676 filtering_tap_listeners = have_filtering_tap_listeners();
2678 /* Get the union of the flags for all tap listeners. */
2679 tap_flags = union_of_tap_listener_flags();
2681 if (do_dissection) {
2682 gboolean create_proto_tree;
2683 epan_dissect_t *edt;
2685 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2686 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2687 create_proto_tree = TRUE;
2689 create_proto_tree = FALSE;
2691 /* The protocol tree will be "visible", i.e., printed, only if we're
2692 printing packet details, which is true if we're printing stuff
2693 ("print_packet_info" is true) and we're in verbose mode
2694 ("packet_details" is true). */
2695 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2697 while (to_read-- && cf->wth) {
2698 wtap_cleareof(cf->wth);
2699 rec_type = wtap_read(cf->wth, &err, &err_info, &data_offset);
2700 if (rec_type == -1) {
2701 /* read from file failed, tell the capture child to stop */
2702 sync_pipe_stop(cap_session);
2703 wtap_close(cf->wth);
2706 if (rec_type == REC_TYPE_PACKET) {
2707 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2708 wtap_buf_ptr(cf->wth),
2710 /* packet successfully read and gone through the "Read Filter" */
2717 epan_dissect_free(edt);
2721 * Dumpcap's doing all the work; we're not doing any dissection.
2722 * Count all the packets it wrote.
2724 packet_count += to_read;
2727 if (print_packet_counts) {
2728 /* We're printing packet counts. */
2729 if (packet_count != 0) {
2730 fprintf(stderr, "\r%u ", packet_count);
2731 /* stderr could be line buffered */
2738 * Allow SIGINFO handlers to write.
2743 * If a SIGINFO handler asked us to write out capture counts, do so.
2747 #endif /* SIGINFO */
2753 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2754 /* Report the count only if we aren't printing a packet count
2755 as packets arrive. */
2756 fprintf(stderr, "%u packet%s captured\n", packet_count,
2757 plurality(packet_count, "", "s"));
2760 infoprint = FALSE; /* we just reported it */
2761 #endif /* SIGINFO */
2766 report_counts_siginfo(int signum _U_)
2768 int sav_errno = errno;
2769 /* If we've been told to delay printing, just set a flag asking
2770 that we print counts (if we're supposed to), otherwise print
2771 the count of packets captured (if we're supposed to). */
2778 #endif /* SIGINFO */
2781 /* capture child detected any packet drops? */
2783 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2785 if (print_packet_counts) {
2786 /* We're printing packet counts to stderr.
2787 Send a newline so that we move to the line after the packet count. */
2788 fprintf(stderr, "\n");
2792 /* We're printing packet counts to stderr.
2793 Send a newline so that we move to the line after the packet count. */
2794 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2800 * Capture child closed its side of the pipe, report any error and
2801 * do the required cleanup.
2804 capture_input_closed(capture_session *cap_session, gchar *msg)
2806 capture_file *cf = (capture_file *) cap_session->cf;
2809 fprintf(stderr, "tshark: %s\n", msg);
2813 if (cf != NULL && cf->wth != NULL) {
2814 wtap_close(cf->wth);
2815 if (cf->is_tempfile) {
2816 ws_unlink(cf->filename);
2819 #ifdef USE_BROKEN_G_MAIN_LOOP
2820 /*g_main_loop_quit(loop);*/
2821 g_main_loop_quit(loop);
2823 loop_running = FALSE;
2832 capture_cleanup(DWORD ctrltype _U_)
2834 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2835 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2836 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2837 like SIGTERM at least when the machine's shutting down.
2839 For now, we handle them all as indications that we should clean up
2840 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2843 We must return TRUE so that no other handler - such as one that would
2844 terminate the process - gets called.
2846 XXX - for some reason, typing ^C to TShark, if you run this in
2847 a Cygwin console window in at least some versions of Cygwin,
2848 causes TShark to terminate immediately; this routine gets
2849 called, but the main loop doesn't get a chance to run and
2850 exit cleanly, at least if this is compiled with Microsoft Visual
2851 C++ (i.e., it's a property of the Cygwin console window or Bash;
2852 it happens if TShark is not built with Cygwin - for all I know,
2853 building it with Cygwin may make the problem go away). */
2855 /* tell the capture child to stop */
2856 sync_pipe_stop(&global_capture_session);
2858 /* don't stop our own loop already here, otherwise status messages and
2859 * cleanup wouldn't be done properly. The child will indicate the stop of
2860 * everything by calling capture_input_closed() later */
2866 capture_cleanup(int signum _U_)
2868 /* tell the capture child to stop */
2869 sync_pipe_stop(&global_capture_session);
2871 /* don't stop our own loop already here, otherwise status messages and
2872 * cleanup wouldn't be done properly. The child will indicate the stop of
2873 * everything by calling capture_input_closed() later */
2876 #endif /* HAVE_LIBPCAP */
2879 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2880 gint64 offset, struct wtap_pkthdr *whdr,
2887 /* The frame number of this packet is one more than the count of
2888 frames in this packet. */
2889 framenum = cf->count + 1;
2891 /* If we're not running a display filter and we're not printing any
2892 packet information, we don't need to do a dissection. This means
2893 that all packets can be marked as 'passed'. */
2896 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2898 /* If we're going to print packet information, or we're going to
2899 run a read filter, or display filter, or we're going to process taps, set up to
2900 do a dissection and do so. */
2902 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2903 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2904 /* Grab any resolved addresses */
2905 host_name_lookup_process();
2907 /* If we're running a read filter, prime the epan_dissect_t with that
2910 epan_dissect_prime_dfilter(edt, cf->rfcode);
2913 epan_dissect_prime_dfilter(edt, cf->dfcode);
2915 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
2917 if (ref == &fdlocal) {
2918 ref_frame = fdlocal;
2922 epan_dissect_run(edt, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
2924 /* Run the read filter if we have one. */
2926 passed = dfilter_apply_edt(cf->rfcode, edt);
2930 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
2931 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
2933 /* If we're not doing dissection then there won't be any dependent frames.
2934 * More importantly, edt.pi.dependent_frames won't be initialized because
2935 * epan hasn't been initialized.
2936 * if we *are* doing dissection, then mark the dependent frames, but only
2937 * if a display filter was given and it matches this packet.
2939 if (edt && cf->dfcode) {
2940 if (dfilter_apply_edt(cf->dfcode, edt)) {
2941 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
2947 /* if we don't add it to the frame_data_sequence, clean it up right now
2949 frame_data_destroy(&fdlocal);
2953 epan_dissect_reset(edt);
2959 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
2960 struct wtap_pkthdr *phdr, Buffer *buf,
2966 /* If we're not running a display filter and we're not printing any
2967 packet information, we don't need to do a dissection. This means
2968 that all packets can be marked as 'passed'. */
2971 /* If we're going to print packet information, or we're going to
2972 run a read filter, or we're going to process taps, set up to
2973 do a dissection and do so. */
2975 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2976 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2977 /* Grab any resolved addresses */
2978 host_name_lookup_process();
2980 /* If we're running a display filter, prime the epan_dissect_t with that
2983 epan_dissect_prime_dfilter(edt, cf->dfcode);
2985 col_custom_prime_edt(edt, &cf->cinfo);
2987 /* We only need the columns if either
2988 1) some tap needs the columns
2990 2) we're printing packet info but we're *not* verbose; in verbose
2991 mode, we print the protocol tree, not the protocol summary.
2993 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
2998 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3005 epan_dissect_run_with_taps(edt, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
3007 /* Run the read/display filter if we have one. */
3009 passed = dfilter_apply_edt(cf->dfcode, edt);
3013 frame_data_set_after_dissect(fdata, &cum_bytes);
3014 /* Process this packet. */
3015 if (print_packet_info) {
3016 /* We're printing packet information; print the information for
3018 print_packet(cf, edt);
3020 /* The ANSI C standard does not appear to *require* that a line-buffered
3021 stream be flushed to the host environment whenever a newline is
3022 written, it just says that, on such a stream, characters "are
3023 intended to be transmitted to or from the host environment as a
3024 block when a new-line character is encountered".
3026 The Visual C++ 6.0 C implementation doesn't do what is intended;
3027 even if you set a stream to be line-buffered, it still doesn't
3028 flush the buffer at the end of every line.
3030 So, if the "-l" flag was specified, we flush the standard output
3031 at the end of a packet. This will do the right thing if we're
3032 printing packet summary lines, and, as we print the entire protocol
3033 tree for a single packet without waiting for anything to happen,
3034 it should be as good as line-buffered mode if we're printing
3035 protocol trees. (The whole reason for the "-l" flag in either
3036 tcpdump or TShark is to allow the output of a live capture to
3037 be piped to a program or script and to have that script see the
3038 information for the packet as soon as it's printed, rather than
3039 having to wait until a standard I/O buffer fills up. */
3043 if (ferror(stdout)) {
3044 show_print_file_io_error(errno);
3053 epan_dissect_reset(edt);
3055 return passed || fdata->flags.dependent_of_displayed;
3059 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3060 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3063 int snapshot_length;
3068 gchar *err_info = NULL;
3070 gboolean packet_count_reached = FALSE;
3071 char *save_file_string = NULL;
3072 gboolean filtering_tap_listeners;
3074 wtapng_section_t *shb_hdr;
3075 wtapng_iface_descriptions_t *idb_inf;
3077 struct wtap_pkthdr phdr;
3079 epan_dissect_t *edt = NULL;
3081 memset(&phdr, 0, sizeof(struct wtap_pkthdr));
3083 shb_hdr = wtap_file_get_shb_info(cf->wth);
3084 idb_inf = wtap_file_get_idb_info(cf->wth);
3085 #ifdef PCAP_NG_DEFAULT
3086 if (idb_inf->interface_data->len > 1) {
3087 linktype = WTAP_ENCAP_PER_PACKET;
3089 linktype = wtap_file_encap(cf->wth);
3092 linktype = wtap_file_encap(cf->wth);
3094 if (save_file != NULL) {
3095 /* Get a string that describes what we're writing to */
3096 save_file_string = output_file_description(save_file);
3098 /* Set up to write to the capture file. */
3099 snapshot_length = wtap_snapshot_length(cf->wth);
3100 if (snapshot_length == 0) {
3101 /* Snapshot length of input file not known. */
3102 snapshot_length = WTAP_MAX_PACKET_SIZE;
3104 /* If we don't have an application name add Tshark */
3105 if (shb_hdr->shb_user_appl == NULL) {
3106 g_snprintf(appname, sizeof(appname), "TShark " VERSION "%s", wireshark_gitversion);
3107 shb_hdr->shb_user_appl = appname;
3110 if (linktype != WTAP_ENCAP_PER_PACKET &&
3111 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)
3112 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3113 snapshot_length, FALSE /* compressed */, &err);
3115 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3116 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, &err);
3122 /* We couldn't set up to write to the capture file. */
3125 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
3126 cmdarg_err("Capture files can't be written in that format.");
3129 case WTAP_ERR_UNSUPPORTED_ENCAP:
3130 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3131 cmdarg_err("The capture file being read can't be written as a "
3132 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3135 case WTAP_ERR_CANT_OPEN:
3136 cmdarg_err("The %s couldn't be created for some "
3137 "unknown reason.", save_file_string);
3140 case WTAP_ERR_SHORT_WRITE:
3141 cmdarg_err("A full header couldn't be written to the %s.",
3146 cmdarg_err("The %s could not be created: %s.", save_file_string,
3147 wtap_strerror(err));
3153 if (print_packet_info) {
3154 if (!write_preamble(cf)) {
3156 show_print_file_io_error(err);
3165 if (pdh && out_file_name_res) {
3166 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3167 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3168 wtap_file_type_subtype_short_string(out_file_type));
3172 /* Do we have any tap listeners with filters? */
3173 filtering_tap_listeners = have_filtering_tap_listeners();
3175 /* Get the union of the flags for all tap listeners. */
3176 tap_flags = union_of_tap_listener_flags();
3178 if (perform_two_pass_analysis) {
3181 /* Allocate a frame_data_sequence for all the frames. */
3182 cf->frames = new_frame_data_sequence();
3184 if (do_dissection) {
3185 gboolean create_proto_tree = FALSE;
3187 /* If we're going to be applying a filter, we'll need to
3188 create a protocol tree against which to apply the filter. */
3189 if (cf->rfcode || cf->dfcode)
3190 create_proto_tree = TRUE;
3192 /* We're not going to display the protocol tree on this pass,
3193 so it's not going to be "visible". */
3194 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3197 while ((rec_type = wtap_read(cf->wth, &err, &err_info, &data_offset)) != -1) {
3198 if (rec_type == REC_TYPE_PACKET) {
3199 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3200 wtap_buf_ptr(cf->wth))) {
3201 /* Stop reading if we have the maximum number of packets;
3202 * When the -c option has not been used, max_packet_count
3203 * starts at 0, which practically means, never stop reading.
3204 * (unless we roll over max_packet_count ?)
3206 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3207 err = 0; /* This is not an error */
3215 epan_dissect_free(edt);
3219 /* Close the sequential I/O side, to free up memory it requires. */
3220 wtap_sequential_close(cf->wth);
3222 /* Allow the protocol dissectors to free up memory that they
3223 * don't need after the sequential run-through of the packets. */
3224 postseq_cleanup_all_protocols();
3228 buffer_init(&buf, 1500);
3230 if (do_dissection) {
3231 gboolean create_proto_tree;
3233 if (cf->dfcode || print_details || filtering_tap_listeners ||
3234 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3235 create_proto_tree = TRUE;
3237 create_proto_tree = FALSE;
3239 /* The protocol tree will be "visible", i.e., printed, only if we're
3240 printing packet details, which is true if we're printing stuff
3241 ("print_packet_info" is true) and we're in verbose mode
3242 ("packet_details" is true). */
3243 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3246 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3247 fdata = frame_data_sequence_find(cf->frames, framenum);
3248 if ((rec_type = wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3249 &err_info)) == -1) {
3250 if (rec_type == REC_TYPE_PACKET) {
3251 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3253 /* Either there's no read filtering or this packet passed the
3254 filter, so, if we're writing to a capture file, write
3257 if (!wtap_dump(pdh, &phdr, buffer_start_ptr(&buf), &err)) {
3258 /* Error writing to a capture file */
3261 case WTAP_ERR_UNSUPPORTED_ENCAP:
3263 * This is a problem with the particular frame we're writing
3264 * and the file type and subtype we're writing; note that,
3265 * and report the frame number and file type/subtype.
3267 * XXX - framenum is not necessarily the frame number in
3268 * the input file if there was a read filter.
3271 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3272 framenum, cf->filename,
3273 wtap_file_type_subtype_short_string(out_file_type));
3276 case WTAP_ERR_PACKET_TOO_LARGE:
3278 * This is a problem with the particular frame we're writing
3279 * and the file type and subtype we're writing; note that,
3280 * and report the frame number and file type/subtype.
3282 * XXX - framenum is not necessarily the frame number in
3283 * the input file if there was a read filter.
3286 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3287 framenum, cf->filename,
3288 wtap_file_type_subtype_short_string(out_file_type));
3292 show_capture_file_io_error(save_file, err, FALSE);
3295 wtap_dump_close(pdh, &err);
3306 epan_dissect_free(edt);
3315 if (do_dissection) {
3316 gboolean create_proto_tree;
3318 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3319 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3320 create_proto_tree = TRUE;
3322 create_proto_tree = FALSE;
3324 /* The protocol tree will be "visible", i.e., printed, only if we're
3325 printing packet details, which is true if we're printing stuff
3326 ("print_packet_info" is true) and we're in verbose mode
3327 ("packet_details" is true). */
3328 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3331 while ((rec_type = wtap_read(cf->wth, &err, &err_info, &data_offset)) != -1) {
3332 if (rec_type == REC_TYPE_PACKET) {
3335 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3336 wtap_buf_ptr(cf->wth),
3338 /* Either there's no read filtering or this packet passed the
3339 filter, so, if we're writing to a capture file, write
3342 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err)) {
3343 /* Error writing to a capture file */
3346 case WTAP_ERR_UNSUPPORTED_ENCAP:
3348 * This is a problem with the particular frame we're writing
3349 * and the file type and subtype we're writing; note that,
3350 * and report the frame number and file type/subtype.
3353 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3354 framenum, cf->filename,
3355 wtap_file_type_subtype_short_string(out_file_type));
3358 case WTAP_ERR_PACKET_TOO_LARGE:
3360 * This is a problem with the particular frame we're writing
3361 * and the file type and subtype we're writing; note that,
3362 * and report the frame number and file type/subtype.
3365 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3366 framenum, cf->filename,
3367 wtap_file_type_subtype_short_string(out_file_type));
3371 show_capture_file_io_error(save_file, err, FALSE);
3374 wtap_dump_close(pdh, &err);
3381 /* If we're supposed to stop after max_packet_count packets,
3382 * count this packet.
3383 * When the -c option has not been used, max_packet_count
3386 if (max_packet_count != 0) {
3388 if (max_packet_count == 0)
3389 packet_count_reached = TRUE;
3393 /* Stop reading if we have the maximum number of packets or the
3394 * maximum file size.
3396 if ( packet_count_reached || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3397 err = 0; /* This is not an error */
3403 epan_dissect_free(edt);
3410 * Print a message noting that the read failed somewhere along the line.
3412 * If we're printing packet data, and the standard output and error are
3413 * going to the same place, flush the standard output, so everything
3414 * buffered up is written, and then print a newline to the standard error
3415 * before printing the error message, to separate it from the packet
3416 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3417 * the _fstat() documentation at Microsoft doesn't indicate whether
3418 * st_ino is even supported.)
3421 if (print_packet_info) {
3422 struct stat stat_stdout, stat_stderr;
3424 if (fstat(1, &stat_stdout) == 0 && fstat(2, &stat_stderr) == 0) {
3425 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3426 stat_stdout.st_ino == stat_stderr.st_ino) {
3428 fprintf(stderr, "\n");
3435 case WTAP_ERR_UNSUPPORTED:
3436 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3437 cf->filename, err_info);
3441 case WTAP_ERR_UNSUPPORTED_ENCAP:
3442 cmdarg_err("The file \"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
3443 cf->filename, err_info);
3447 case WTAP_ERR_CANT_READ:
3448 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
3452 case WTAP_ERR_SHORT_READ:
3453 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3457 case WTAP_ERR_BAD_FILE:
3458 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3459 cf->filename, err_info);
3463 case WTAP_ERR_DECOMPRESS:
3464 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3465 "(%s)", cf->filename, err_info);
3469 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3470 cf->filename, wtap_strerror(err));
3473 if (save_file != NULL) {
3474 /* Now close the capture file. */
3475 if (!wtap_dump_close(pdh, &err))
3476 show_capture_file_io_error(save_file, err, TRUE);
3479 if (save_file != NULL) {
3480 /* Now close the capture file. */
3481 if (!wtap_dump_close(pdh, &err))
3482 show_capture_file_io_error(save_file, err, TRUE);
3484 if (print_packet_info) {
3485 if (!write_finale()) {
3487 show_print_file_io_error(err);
3494 wtap_close(cf->wth);
3497 g_free(save_file_string);
3504 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3505 const guchar *pd, guint tap_flags)
3511 /* Count this packet. */
3514 /* If we're not running a display filter and we're not printing any
3515 packet information, we don't need to do a dissection. This means
3516 that all packets can be marked as 'passed'. */
3519 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3521 /* If we're going to print packet information, or we're going to
3522 run a read filter, or we're going to process taps, set up to
3523 do a dissection and do so. */
3525 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3526 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3527 /* Grab any resolved addresses */
3528 host_name_lookup_process();
3530 /* If we're running a filter, prime the epan_dissect_t with that
3533 epan_dissect_prime_dfilter(edt, cf->dfcode);
3535 col_custom_prime_edt(edt, &cf->cinfo);
3537 /* We only need the columns if either
3538 1) some tap needs the columns
3540 2) we're printing packet info but we're *not* verbose; in verbose
3541 mode, we print the protocol tree, not the protocol summary.
3543 3) there is a column mapped as an individual field */
3544 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3549 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3551 if (ref == &fdata) {
3556 epan_dissect_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3558 /* Run the filter if we have it. */
3560 passed = dfilter_apply_edt(cf->dfcode, edt);
3564 frame_data_set_after_dissect(&fdata, &cum_bytes);
3566 /* Process this packet. */
3567 if (print_packet_info) {
3568 /* We're printing packet information; print the information for
3570 print_packet(cf, edt);
3572 /* The ANSI C standard does not appear to *require* that a line-buffered
3573 stream be flushed to the host environment whenever a newline is
3574 written, it just says that, on such a stream, characters "are
3575 intended to be transmitted to or from the host environment as a
3576 block when a new-line character is encountered".
3578 The Visual C++ 6.0 C implementation doesn't do what is intended;
3579 even if you set a stream to be line-buffered, it still doesn't
3580 flush the buffer at the end of every line.
3582 So, if the "-l" flag was specified, we flush the standard output
3583 at the end of a packet. This will do the right thing if we're
3584 printing packet summary lines, and, as we print the entire protocol
3585 tree for a single packet without waiting for anything to happen,
3586 it should be as good as line-buffered mode if we're printing
3587 protocol trees. (The whole reason for the "-l" flag in either
3588 tcpdump or TShark is to allow the output of a live capture to
3589 be piped to a program or script and to have that script see the
3590 information for the packet as soon as it's printed, rather than
3591 having to wait until a standard I/O buffer fills up. */
3595 if (ferror(stdout)) {
3596 show_print_file_io_error(errno);
3601 /* this must be set after print_packet() [bug #8160] */
3602 prev_dis_frame = fdata;
3603 prev_dis = &prev_dis_frame;
3606 prev_cap_frame = fdata;
3607 prev_cap = &prev_cap_frame;
3610 epan_dissect_reset(edt);
3611 frame_data_destroy(&fdata);
3617 write_preamble(capture_file *cf)
3619 switch (output_action) {
3622 return print_preamble(print_stream, cf ? cf->filename : NULL, wireshark_gitversion);
3626 write_pdml_preamble(stdout, cf ? cf->filename : NULL);
3628 write_psml_preamble(stdout);
3629 return !ferror(stdout);
3632 write_fields_preamble(output_fields, stdout);
3633 return !ferror(stdout);
3636 g_assert_not_reached();
3642 get_line_buf(size_t len)
3644 static char *line_bufp = NULL;
3645 static size_t line_buf_len = 256;
3646 size_t new_line_buf_len;
3648 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3649 new_line_buf_len *= 2)
3651 if (line_bufp == NULL) {
3652 line_buf_len = new_line_buf_len;
3653 line_bufp = (char *)g_malloc(line_buf_len + 1);
3655 if (new_line_buf_len > line_buf_len) {
3656 line_buf_len = new_line_buf_len;
3657 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3664 put_string(char *dest, const char *str, size_t str_len)
3666 memcpy(dest, str, str_len);
3667 dest[str_len] = '\0';
3671 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3675 for (i = str_len; i < str_with_spaces; i++)
3678 put_string(dest, str, str_len);
3682 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3686 memcpy(dest, str, str_len);
3687 for (i = str_len; i < str_with_spaces; i++)
3690 dest[str_with_spaces] = '\0';
3694 print_columns(capture_file *cf)
3702 line_bufp = get_line_buf(256);
3705 for (i = 0; i < cf->cinfo.num_cols; i++) {
3706 /* Skip columns not marked as visible. */
3707 if (!get_column_visible(i))
3709 switch (cf->cinfo.col_fmt[i]) {
3711 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3714 line_bufp = get_line_buf(buf_offset + column_len);
3715 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3721 case COL_ABS_YMD_TIME: /* XXX - wider */
3722 case COL_ABS_YDOY_TIME: /* XXX - wider */
3724 case COL_UTC_YMD_TIME: /* XXX - wider */
3725 case COL_UTC_YDOY_TIME: /* XXX - wider */
3726 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3727 if (column_len < 10)
3729 line_bufp = get_line_buf(buf_offset + column_len);
3730 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3736 case COL_DEF_DL_SRC:
3737 case COL_RES_DL_SRC:
3738 case COL_UNRES_DL_SRC:
3739 case COL_DEF_NET_SRC:
3740 case COL_RES_NET_SRC:
3741 case COL_UNRES_NET_SRC:
3742 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3743 if (column_len < 12)
3745 line_bufp = get_line_buf(buf_offset + column_len);
3746 put_spaces_string(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3752 case COL_DEF_DL_DST:
3753 case COL_RES_DL_DST:
3754 case COL_UNRES_DL_DST:
3755 case COL_DEF_NET_DST:
3756 case COL_RES_NET_DST:
3757 case COL_UNRES_NET_DST:
3758 column_len = col_len = strlen(cf->cinfo.col_data[i]);
3759 if (column_len < 12)
3761 line_bufp = get_line_buf(buf_offset + column_len);
3762 put_string_spaces(line_bufp + buf_offset, cf->cinfo.col_data[i], col_len, column_len);
3766 column_len = strlen(cf->cinfo.col_data[i]);
3767 line_bufp = get_line_buf(buf_offset + column_len);
3768 put_string(line_bufp + buf_offset, cf->cinfo.col_data[i], column_len);
3771 buf_offset += column_len;
3772 if (i != cf->cinfo.num_cols - 1) {
3774 * This isn't the last column, so we need to print a
3775 * separator between this column and the next.
3777 * If we printed a network source and are printing a
3778 * network destination of the same type next, separate
3779 * them with " -> "; if we printed a network destination
3780 * and are printing a network source of the same type
3781 * next, separate them with " <- "; otherwise separate them
3784 * We add enough space to the buffer for " <- " or " -> ",
3785 * even if we're only adding " ".
3787 line_bufp = get_line_buf(buf_offset + 4);
3788 switch (cf->cinfo.col_fmt[i]) {
3793 switch (cf->cinfo.col_fmt[i + 1]) {
3798 put_string(line_bufp + buf_offset, " -> ", 4);
3803 put_string(line_bufp + buf_offset, " ", 1);
3809 case COL_DEF_DL_SRC:
3810 case COL_RES_DL_SRC:
3811 case COL_UNRES_DL_SRC:
3812 switch (cf->cinfo.col_fmt[i + 1]) {
3814 case COL_DEF_DL_DST:
3815 case COL_RES_DL_DST:
3816 case COL_UNRES_DL_DST:
3817 put_string(line_bufp + buf_offset, " -> ", 4);
3822 put_string(line_bufp + buf_offset, " ", 1);
3828 case COL_DEF_NET_SRC:
3829 case COL_RES_NET_SRC:
3830 case COL_UNRES_NET_SRC:
3831 switch (cf->cinfo.col_fmt[i + 1]) {
3833 case COL_DEF_NET_DST:
3834 case COL_RES_NET_DST:
3835 case COL_UNRES_NET_DST:
3836 put_string(line_bufp + buf_offset, " -> ", 4);
3841 put_string(line_bufp + buf_offset, " ", 1);
3850 switch (cf->cinfo.col_fmt[i + 1]) {
3855 put_string(line_bufp + buf_offset, " <- ", 4);
3860 put_string(line_bufp + buf_offset, " ", 1);
3866 case COL_DEF_DL_DST:
3867 case COL_RES_DL_DST:
3868 case COL_UNRES_DL_DST:
3869 switch (cf->cinfo.col_fmt[i + 1]) {
3871 case COL_DEF_DL_SRC:
3872 case COL_RES_DL_SRC:
3873 case COL_UNRES_DL_SRC:
3874 put_string(line_bufp + buf_offset, " <- ", 4);
3879 put_string(line_bufp + buf_offset, " ", 1);
3885 case COL_DEF_NET_DST:
3886 case COL_RES_NET_DST:
3887 case COL_UNRES_NET_DST:
3888 switch (cf->cinfo.col_fmt[i + 1]) {
3890 case COL_DEF_NET_SRC:
3891 case COL_RES_NET_SRC:
3892 case COL_UNRES_NET_SRC:
3893 put_string(line_bufp + buf_offset, " <- ", 4);
3898 put_string(line_bufp + buf_offset, " ", 1);
3905 put_string(line_bufp + buf_offset, " ", 1);
3911 return print_line(print_stream, 0, line_bufp);
3915 print_packet(capture_file *cf, epan_dissect_t *edt)
3917 print_args_t print_args;
3919 if (print_summary || output_fields_has_cols(output_fields)) {
3920 /* Just fill in the columns. */
3921 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
3923 if (print_summary) {
3924 /* Now print them. */
3925 switch (output_action) {
3928 if (!print_columns(cf))
3933 proto_tree_write_psml(edt, stdout);
3934 return !ferror(stdout);
3935 case WRITE_FIELDS: /*No non-verbose "fields" format */
3936 g_assert_not_reached();
3941 if (print_details) {
3942 /* Print the information in the protocol tree. */
3943 switch (output_action) {
3946 /* Only initialize the fields that are actually used in proto_tree_print.
3947 * This is particularly important for .range, as that's heap memory which
3948 * we would otherwise have to g_free().
3949 print_args.to_file = TRUE;
3950 print_args.format = print_format;
3951 print_args.print_summary = print_summary;
3952 print_args.print_formfeed = FALSE;
3953 packet_range_init(&print_args.range, &cfile);
3955 print_args.print_hex = print_hex;
3956 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
3958 if (!proto_tree_print(&print_args, edt, print_stream))
3961 if (!print_line(print_stream, 0, separator))
3967 proto_tree_write_pdml(edt, stdout);
3969 return !ferror(stdout);
3971 proto_tree_write_fields(output_fields, edt, &cf->cinfo, stdout);
3973 return !ferror(stdout);
3977 if (print_summary || print_details) {
3978 if (!print_line(print_stream, 0, ""))
3981 if (!print_hex_data(print_stream, edt))
3983 if (!print_line(print_stream, 0, separator))
3992 switch (output_action) {
3995 return print_finale(print_stream);
3999 write_pdml_finale(stdout);
4001 write_psml_finale(stdout);
4002 return !ferror(stdout);
4005 write_fields_finale(output_fields, stdout);
4006 return !ferror(stdout);
4009 g_assert_not_reached();
4015 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4019 char err_msg[2048+1];
4021 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4025 /* The open succeeded. Fill in the information for this file. */
4027 /* Create new epan session for dissection. */
4028 epan_free(cf->epan);
4029 cf->epan = tshark_epan_new(cf);
4032 cf->f_datalen = 0; /* not used, but set it anyway */
4034 /* Set the file name because we need it to set the follow stream filter.
4035 XXX - is that still true? We need it for other reasons, though,
4037 cf->filename = g_strdup(fname);
4039 /* Indicate whether it's a permanent or temporary file. */
4040 cf->is_tempfile = is_tempfile;
4042 /* No user changes yet. */
4043 cf->unsaved_changes = FALSE;
4045 cf->cd_t = wtap_file_type_subtype(cf->wth);
4046 cf->open_type = type;
4048 cf->drops_known = FALSE;
4050 cf->snap = wtap_snapshot_length(cf->wth);
4051 if (cf->snap == 0) {
4052 /* Snapshot length not known. */
4053 cf->has_snap = FALSE;
4054 cf->snap = WTAP_MAX_PACKET_SIZE;
4056 cf->has_snap = TRUE;
4057 nstime_set_zero(&cf->elapsed_time);
4062 cf->state = FILE_READ_IN_PROGRESS;
4064 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4065 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4070 g_snprintf(err_msg, sizeof err_msg,
4071 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4072 cmdarg_err("%s", err_msg);
4077 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4079 char *save_file_string;
4081 save_file_string = output_file_description(fname);
4086 cmdarg_err("Not all the packets could be written to the %s because there is "
4087 "no space left on the file system.",
4093 cmdarg_err("Not all the packets could be written to the %s because you are "
4094 "too close to, or over your disk quota.",
4099 case WTAP_ERR_CANT_CLOSE:
4100 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4104 case WTAP_ERR_SHORT_WRITE:
4105 cmdarg_err("Not all the packets could be written to the %s.",
4111 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4112 wtap_strerror(err));
4114 cmdarg_err("An error occurred while writing to the %s: %s.",
4115 save_file_string, wtap_strerror(err));
4119 g_free(save_file_string);
4123 show_print_file_io_error(int err)
4128 cmdarg_err("Not all the packets could be printed because there is "
4129 "no space left on the file system.");
4134 cmdarg_err("Not all the packets could be printed because you are "
4135 "too close to, or over your disk quota.");
4140 cmdarg_err("An error occurred while printing packets: %s.",
4147 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4151 static char errmsg_errno[1024+1];
4154 /* Wiretap error. */
4157 case WTAP_ERR_NOT_REGULAR_FILE:
4158 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4161 case WTAP_ERR_RANDOM_OPEN_PIPE:
4162 /* Seen only when opening a capture file for reading. */
4163 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4166 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4167 /* Seen only when opening a capture file for reading. */
4168 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4171 case WTAP_ERR_UNSUPPORTED:
4172 /* Seen only when opening a capture file for reading. */
4173 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4174 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
4177 errmsg = errmsg_errno;
4180 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4181 /* Seen only when opening a capture file for writing. */
4182 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4183 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4184 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4185 errmsg = errmsg_errno;
4188 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4189 /* Seen only when opening a capture file for writing. */
4190 errmsg = "TShark doesn't support writing capture files in that format.";
4193 case WTAP_ERR_UNSUPPORTED_ENCAP:
4195 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4196 "TShark can't save this capture as a \"%s\" file.",
4197 wtap_file_type_subtype_short_string(file_type));
4199 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4200 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
4204 errmsg = errmsg_errno;
4207 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4209 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4210 "TShark can't save this capture as a \"%s\" file.",
4211 wtap_file_type_subtype_short_string(file_type));
4212 errmsg = errmsg_errno;
4214 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4217 case WTAP_ERR_BAD_FILE:
4218 /* Seen only when opening a capture file for reading. */
4219 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4220 "The file \"%%s\" appears to be damaged or corrupt.\n"
4223 errmsg = errmsg_errno;
4226 case WTAP_ERR_CANT_OPEN:
4228 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4230 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4233 case WTAP_ERR_SHORT_READ:
4234 errmsg = "The file \"%s\" appears to have been cut short"
4235 " in the middle of a packet or other data.";
4238 case WTAP_ERR_SHORT_WRITE:
4239 errmsg = "A full header couldn't be written to the file \"%s\".";
4242 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4243 errmsg = "This file type cannot be written as a compressed file.";
4246 case WTAP_ERR_DECOMPRESS:
4247 /* Seen only when opening a capture file for reading. */
4248 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4249 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4252 errmsg = errmsg_errno;
4256 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4257 "The file \"%%s\" could not be %s: %s.",
4258 for_writing ? "created" : "opened",
4259 wtap_strerror(err));
4260 errmsg = errmsg_errno;
4264 errmsg = file_open_error_message(err, for_writing);
4269 * Open/create errors are reported with an console message in TShark.
4272 open_failure_message(const char *filename, int err, gboolean for_writing)
4274 fprintf(stderr, "tshark: ");
4275 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4276 fprintf(stderr, "\n");
4281 * General errors are reported with an console message in TShark.
4284 failure_message(const char *msg_format, va_list ap)
4286 fprintf(stderr, "tshark: ");
4287 vfprintf(stderr, msg_format, ap);
4288 fprintf(stderr, "\n");
4292 * Read errors are reported with an console message in TShark.
4295 read_failure_message(const char *filename, int err)
4297 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4298 filename, g_strerror(err));
4302 * Write errors are reported with an console message in TShark.
4305 write_failure_message(const char *filename, int err)
4307 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4308 filename, g_strerror(err));
4312 * Report an error in command-line arguments.
4315 cmdarg_err(const char *fmt, ...)
4320 failure_message(fmt, ap);
4325 * Report additional information for an error in command-line arguments.
4328 cmdarg_err_cont(const char *fmt, ...)
4333 vfprintf(stderr, fmt, ap);
4334 fprintf(stderr, "\n");
4340 * Editor modelines - http://www.wireshark.org/tools/modelines.html
4345 * indent-tabs-mode: nil
4348 * vi: set shiftwidth=2 tabstop=8 expandtab:
4349 * :indentSize=2:tabSize=8:noTabs=true: