5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
9 * Text-mode variant, by Gilbert Ramirez <gram@alumni.rice.edu>
10 * and Guy Harris <guy@alum.mit.edu>.
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
50 #ifdef HAVE_SYS_STAT_H
51 # include <sys/stat.h>
54 #ifdef NEED_STRERROR_H
63 #include <epan/epan.h>
64 #include <epan/filesystem.h>
65 #include <epan/privileges.h>
66 #include <wiretap/file_util.h>
69 #include <epan/timestamp.h>
70 #include <epan/packet.h>
72 #include "disabled_protos.h"
73 #include <epan/prefs.h>
74 #include <epan/column.h>
76 #include <epan/addr_resolv.h>
78 #include "clopts_common.h"
79 #include "cmdarg_err.h"
80 #include "version_info.h"
81 #include <epan/conversation.h>
82 #include <epan/plugins.h>
84 #include <epan/epan_dissect.h>
86 #include <epan/stat_cmd_args.h>
87 #include <epan/timestamp.h>
88 #include <epan/ex-opt.h>
91 #include "capture_ui_utils.h"
93 #include "capture-pcap-util.h"
95 #include "capture-wpcap.h"
96 #include "capture_errs.h"
98 #include "capture_sync.h"
99 #endif /* HAVE_LIBPCAP */
100 #include "epan/emem.h"
102 #include <epan/funnel.h>
106 * This is the template for the decode as option; it is shared between the
107 * various functions that output the usage for this parameter.
109 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
111 static nstime_t first_ts;
112 static nstime_t prev_dis_ts;
113 static nstime_t prev_cap_ts;
114 static GString *comp_info_str, *runtime_info_str;
116 static gboolean print_packet_info; /* TRUE if we're to print packet information */
118 * The way the packet decode is to be written.
121 WRITE_TEXT, /* summary or detail text */
122 WRITE_XML, /* PDML or PSML */
123 WRITE_FIELDS /* User defined list of fields */
124 /* Add CSV and the like here */
126 static output_action_e output_action;
127 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
128 static gboolean verbose;
129 static gboolean print_hex;
130 static gboolean line_buffered;
131 static guint32 cum_bytes = 0;
132 static print_format_e print_format = PR_FMT_TEXT;
133 static print_stream_t *print_stream;
135 static output_fields_t* output_fields = NULL;
138 * Standard secondary message for unexpected errors.
140 static const char please_report[] =
141 "Please report this to the Wireshark developers";
145 * TRUE if we're to print packet counts to keep track of captured packets.
147 static gboolean print_packet_counts;
150 static capture_options capture_opts;
153 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
154 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
157 static int capture(void);
158 static void report_counts(void);
160 static BOOL WINAPI capture_cleanup(DWORD);
162 static void capture_cleanup(int);
164 static void report_counts_siginfo(int);
167 #endif /* HAVE_LIBPCAP */
169 static int load_cap_file(capture_file *, char *, int, int, gint64);
170 static gboolean process_packet(capture_file *cf, gint64 offset,
171 const struct wtap_pkthdr *whdr, union wtap_pseudo_header *pseudo_header,
173 static void show_capture_file_io_error(const char *, int, gboolean);
174 static void show_print_file_io_error(int err);
175 static gboolean write_preamble(capture_file *cf);
176 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
177 static gboolean write_finale(void);
178 static const char *cf_open_error_message(int err, gchar *err_info,
179 gboolean for_writing, int file_type);
181 static void open_failure_message(const char *filename, int err,
182 gboolean for_writing);
183 static void failure_message(const char *msg_format, va_list ap);
184 static void read_failure_message(const char *filename, int err);
189 * Mark a particular frame.
193 cf_mark_frame(capture_file *cf, frame_data *frame)
195 if (! frame->flags.marked) {
196 frame->flags.marked = TRUE;
197 if (cf->count > cf->marked_count)
203 * Unmark a particular frame.
207 cf_unmark_frame(capture_file *cf, frame_data *frame)
209 if (frame->flags.marked) {
210 frame->flags.marked = FALSE;
211 if (cf->marked_count > 0)
217 static void list_capture_types(void) {
220 fprintf(stderr, "editcap: The available capture file types for \"F\":\n");
221 for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
222 if (wtap_dump_can_open(i))
223 fprintf(stderr, " %s - %s\n",
224 wtap_file_type_short_string(i), wtap_file_type_string(i));
229 print_usage(gboolean print_ver)
236 "TShark " VERSION "%s\n"
237 "Dump and analyze network traffic.\n"
238 "See http://www.wireshark.org for more information.\n"
241 wireshark_svnversion, get_copyright_info());
245 fprintf(output, "\n");
246 fprintf(output, "Usage: tshark [options] ...\n");
247 fprintf(output, "\n");
250 fprintf(output, "Capture interface:\n");
251 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
252 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
253 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
254 fprintf(output, " -p don't capture in promiscuous mode\n");
256 fprintf(output, " -B <buffer size> size of kernel buffer (def: 1MB)\n");
258 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
259 fprintf(output, " -D print list of interfaces and exit\n");
260 fprintf(output, " -L print list of link-layer types of iface and exit\n");
261 fprintf(output, "\n");
262 fprintf(output, "Capture stop conditions:\n");
263 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
264 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
265 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
266 fprintf(output, " files:NUM - stop after NUM files\n");
267 /*fprintf(output, "\n");*/
268 fprintf(output, "Capture output:\n");
269 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
270 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
271 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
272 #endif /* HAVE_LIBPCAP */
274 /*fprintf(output, "\n");*/
275 fprintf(output, "Input file:\n");
276 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
278 fprintf(output, "\n");
279 fprintf(output, "Processing:\n");
280 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
281 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
282 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
283 fprintf(output, " -d %s ...\n", decode_as_arg_template);
284 fprintf(output, " \"Decode As\", see the man page for details\n");
285 fprintf(output, " Example: tcp.port==8888,http\n");
287 /*fprintf(output, "\n");*/
288 fprintf(output, "Output:\n");
289 fprintf(output, " -w <outfile|-> set the output filename (or '-' for stdout)\n");
290 fprintf(output, " -C <config profile> start with specified configuration profile\n");
291 fprintf(output, " -F <output file type> set the output file type, default is libpcap\n");
292 fprintf(output, " an empty \"-F\" option will list the file types\n");
293 fprintf(output, " -V add output of packet tree (Packet Details)\n");
294 fprintf(output, " -S display packets even when writing to a file\n");
295 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
296 fprintf(output, " -T pdml|ps|psml|text|fields\n");
297 fprintf(output, " format of text output (def: text)\n");
298 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
299 fprintf(output, " this option can be repeated to print multiple fields\n");
300 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
301 fprintf(output, " header=y|n switch headers on and off\n");
302 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
303 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
304 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
305 fprintf(output, " -l flush standard output after each packet\n");
306 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
307 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
308 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
310 fprintf(output, "\n");
311 fprintf(output, "Miscellaneous:\n");
312 fprintf(output, " -h display this help and exit\n");
313 fprintf(output, " -v display version info and exit\n");
314 fprintf(output, " -o <name>:<value> ... override preference setting\n");
318 * For a dissector table, print on the stream described by output,
319 * its short name (which is what's used in the "-d" option) and its
323 display_dissector_table_names(const char *table_name, const char *ui_name,
326 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
330 * For a dissector handle, print on the stream described by output,
331 * the filter name (which is what's used in the "-d" option) and the full
332 * name for the protocol that corresponds to this handle.
335 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
338 const gchar* proto_filter_name;
339 const gchar* proto_ui_name;
341 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
343 if (proto_id != -1) {
344 proto_filter_name = proto_get_protocol_filter_name(proto_id);
345 proto_ui_name = proto_get_protocol_name(proto_id);
346 g_assert(proto_filter_name != NULL);
347 g_assert(proto_ui_name != NULL);
349 fprintf((FILE *)output, "\t%s (%s)\n",
356 * The protocol_name_search structure is used by find_protocol_name_func()
357 * to pass parameters and store results
359 struct protocol_name_search{
360 gchar *searched_name; /* Protocol filter name we are looking for */
361 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
362 guint nb_match; /* How many dissectors matched searched_name */
364 typedef struct protocol_name_search *protocol_name_search_t;
367 * This function parses all dissectors associated with a table to find the
368 * one whose protocol has the specified filter name. It is called
369 * as a reference function in a call to dissector_table_foreach_handle.
370 * The name we are looking for, as well as the results, are stored in the
371 * protocol_name_search struct pointed to by user_data.
372 * If called using dissector_table_foreach_handle, we actually parse the
373 * whole list of dissectors.
376 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
380 const gchar *protocol_filter_name;
381 protocol_name_search_t search_info;
385 search_info = (protocol_name_search_t)user_data;
387 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
388 if (proto_id != -1) {
389 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
390 g_assert(protocol_filter_name != NULL);
391 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
393 if (search_info->nb_match == 0) {
394 /* Record this handle only if this is the first match */
395 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
397 search_info->nb_match++;
403 * Print all layer type names supported.
404 * We send the output to the stream described by the handle output.
408 fprint_all_layer_types(FILE *output)
411 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
415 * Print all protocol names supported for a specific layer type.
416 * table_name contains the layer type name in which the search is performed.
417 * We send the output to the stream described by the handle output.
421 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
424 dissector_table_foreach_handle(table_name,
425 display_dissector_names,
430 * The function below parses the command-line parameters for the decode as
431 * feature (a string pointer by cl_param).
432 * It checks the format of the command-line, searches for a matching table
433 * and dissector. If a table/dissector match is not found, we display a
434 * summary of the available tables/dissectors (on stderr) and return FALSE.
435 * If everything is fine, we get the "Decode as" preference activated,
436 * then we return TRUE.
439 add_decode_as(const gchar *cl_param)
443 gchar *decoded_param;
444 gchar *remaining_param;
446 gchar *dissector_str;
447 dissector_handle_t dissector_matching;
448 dissector_table_t table_matching;
449 ftenum_t dissector_table_selector_type;
450 struct protocol_name_search user_protocol_name;
452 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
455 decoded_param = g_strdup(cl_param);
456 g_assert(decoded_param);
459 /* The lines below will parse this string (modifying it) to extract all
460 necessary information. Note that decoded_param is still needed since
461 strings are not copied - we just save pointers. */
463 /* This section extracts a layer type (table_name) from decoded_param */
464 table_name = decoded_param; /* Layer type string starts from beginning */
466 remaining_param = strchr(table_name, '=');
467 if (remaining_param == NULL) {
468 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
469 /* If the argument does not follow the template, carry on anyway to check
470 if the table name is at least correct. If remaining_param is NULL,
471 we'll exit anyway further down */
474 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
477 /* Remove leading and trailing spaces from the table name */
478 while ( table_name[0] == ' ' )
480 while ( table_name[strlen(table_name) - 1] == ' ' )
481 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
483 /* The following part searches a table matching with the layer type specified */
484 table_matching = NULL;
486 /* Look for the requested table */
487 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
488 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
491 table_matching = find_dissector_table(table_name);
492 if (!table_matching) {
493 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
497 if (!table_matching) {
498 /* Display a list of supported layer types to help the user, if the
499 specified layer type was not found */
500 cmdarg_err("Valid layer types are:");
501 fprint_all_layer_types(stderr);
503 if (remaining_param == NULL || !table_matching) {
504 /* Exit if the layer type was not found, or if no '=' separator was found
506 g_free(decoded_param);
510 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
511 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
514 remaining_param++; /* Move to the second '=' */
515 *remaining_param = '\0'; /* Remove the second '=' */
517 remaining_param++; /* Position after the layer type string */
519 /* This section extracts a selector value (selector_str) from decoded_param */
521 selector_str = remaining_param; /* Next part starts with the selector number */
523 remaining_param = strchr(selector_str, ',');
524 if (remaining_param == NULL) {
525 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
526 /* If the argument does not follow the template, carry on anyway to check
527 if the selector value is at least correct. If remaining_param is NULL,
528 we'll exit anyway further down */
531 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
534 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
536 switch (dissector_table_selector_type) {
542 /* The selector for this table is an unsigned number. Parse it as such.
543 There's no need to remove leading and trailing spaces from the
544 selector number string, because sscanf will do that for us. */
545 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
546 cmdarg_err("Invalid selector number \"%s\"", selector_str);
547 g_free(decoded_param);
555 /* The selector for this table is a string. */
559 /* There are currently no dissector tables with any types other
560 than the ones listed above. */
561 g_assert_not_reached();
564 if (remaining_param == NULL) {
565 /* Exit if no ',' separator was found (see above) */
566 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
567 fprint_all_protocols_for_layer_types(stderr, table_name);
568 g_free(decoded_param);
572 remaining_param++; /* Position after the selector number string */
574 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
576 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
578 /* Remove leading and trailing spaces from the dissector name */
579 while ( dissector_str[0] == ' ' )
581 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
582 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
584 dissector_matching = NULL;
586 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
587 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 */
588 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
591 user_protocol_name.nb_match = 0;
592 user_protocol_name.searched_name = dissector_str;
593 user_protocol_name.matched_handle = NULL;
595 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 */
597 if (user_protocol_name.nb_match != 0) {
598 dissector_matching = user_protocol_name.matched_handle;
599 if (user_protocol_name.nb_match > 1) {
600 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
604 /* OK, check whether the problem is that there isn't any such
605 protocol, or that there is but it's not specified as a protocol
606 that's valid for that dissector table.
607 Note, we don't exit here, but dissector_matching will remain NULL,
609 if (proto_get_id_by_filter_name(dissector_str) == -1) {
610 /* No such protocol */
611 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
613 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
614 dissector_str, table_name);
619 if (!dissector_matching) {
620 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
621 fprint_all_protocols_for_layer_types(stderr, table_name);
622 g_free(decoded_param);
626 /* This is the end of the code that parses the command-line options.
627 All information is now stored in the variables:
631 The above variables that are strings are still pointing to areas within
632 decoded_parm. decoded_parm thus still needs to be kept allocated in
633 until we stop needing these variables
634 decoded_param will be deallocated at each exit point of this function */
637 /* We now have a pointer to the handle for the requested dissector
638 (requested protocol) inside the variable dissector_matching */
639 switch (dissector_table_selector_type) {
645 /* The selector for this table is an unsigned number. */
646 dissector_change(table_name, selector, dissector_matching);
652 /* The selector for this table is a string. */
653 dissector_change_string(table_name, selector_str, dissector_matching);
657 /* There are currently no dissector tables with any types other
658 than the ones listed above. */
659 g_assert_not_reached();
661 g_free(decoded_param); /* "Decode As" rule has been succesfully added */
666 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
667 const gchar *message _U_, gpointer user_data _U_)
672 output_file_description(const char *fname)
674 char *save_file_string;
676 /* Get a string that describes what we're writing to */
677 if (strcmp(fname, "-") == 0) {
678 /* We're writing to the standard output */
679 save_file_string = g_strdup("standard output");
681 /* We're writing to a file with the name in save_file */
682 save_file_string = g_strdup_printf("file \"%s\"", fname);
684 return save_file_string;
688 print_current_user(void) {
689 gchar *cur_user, *cur_group;
690 if (started_with_special_privs()) {
691 cur_user = get_cur_username();
692 cur_group = get_cur_groupname();
693 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
694 cur_user, cur_group);
697 if (running_with_special_privs()) {
698 fprintf(stderr, " This could be dangerous.");
700 fprintf(stderr, "\n");
705 check_capture_privs(void) {
708 /* Warn the user if npf.sys isn't loaded. */
709 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
710 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
711 "capturing or\nlisting interfaces.\n");
719 main(int argc, char *argv[])
721 char *init_progfile_dir_error;
724 gboolean arg_error = FALSE;
730 char *gpf_path, *pf_path;
731 char *gdp_path, *dp_path;
732 int gpf_open_errno, gpf_read_errno;
733 int pf_open_errno, pf_read_errno;
734 int gdp_open_errno, gdp_read_errno;
735 int dp_open_errno, dp_read_errno;
738 gboolean list_link_layer_types = FALSE;
739 gboolean start_capture = FALSE;
742 gboolean capture_option_specified = FALSE;
744 gboolean quiet = FALSE;
745 int out_file_type = WTAP_FILE_PCAP;
746 gchar *cf_name = NULL, *rfilter = NULL;
747 #ifdef HAVE_PCAP_OPEN_DEAD
748 struct bpf_program fcode;
750 dfilter_t *rfcode = NULL;
753 GLogLevelFlags log_flags;
756 #define OPTSTRING_INIT "a:b:c:C:d:De:E:f:F:G:hi:lLnN:o:pqr:R:s:St:T:vVw:xX:y:z:"
759 #define OPTSTRING_WIN32 "B:"
761 #define OPTSTRING_WIN32 ""
764 #define OPTSTRING_WIN32 ""
765 #endif /* HAVE_LIBPCAP */
767 static const char optstring[] = OPTSTRING_INIT OPTSTRING_WIN32;
770 * Get credential information for later use.
772 get_credential_info();
775 * Attempt to get the pathname of the executable file.
777 init_progfile_dir_error = init_progfile_dir(argv[0]);
778 if (init_progfile_dir_error != NULL) {
779 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
780 init_progfile_dir_error);
784 * In order to have the -X opts assigned before the wslua machine starts
785 * we need to call getopts before epan_init() gets called.
788 optind_initial = optind;
790 while ((opt = getopt(argc, argv, optstring)) != -1) {
792 case 'C': /* Configuration Profile */
793 if (profile_exists (optarg)) {
794 set_profile_name (optarg);
796 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
808 optind = optind_initial;
811 /* nothing more than the standard GLib handler, but without a warning */
818 g_log_set_handler(NULL,
820 log_func_ignore, NULL /* user_data */);
821 g_log_set_handler(LOG_DOMAIN_CAPTURE,
823 log_func_ignore, NULL /* user_data */);
825 initialize_funnel_ops();
828 capture_opts_init(&capture_opts, NULL /* cfile */);
831 timestamp_set_type(TS_RELATIVE);
832 timestamp_set_precision(TS_PREC_AUTO);
834 /* Register all dissectors; we must do this before checking for the
835 "-G" flag, as the "-G" flag dumps information registered by the
836 dissectors, and we must do it before we read the preferences, in
837 case any dissectors register preferences. */
838 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
839 failure_message, open_failure_message, read_failure_message);
841 /* Register all tap listeners; we do this before we parse the arguments,
842 as the "-z" argument can specify a registered tap. */
844 /* we register the plugin taps before the other taps because
845 stats_tree taps plugins will be registered as tap listeners
846 by stats_tree_stat.c and need to registered before that */
848 register_all_plugin_tap_listeners();
850 register_all_tap_listeners();
852 /* Now register the preferences for any non-dissector modules.
853 We must do that before we read the preferences as well. */
854 prefs_register_modules();
856 /* If invoked with the "-G" flag, we dump out information based on
857 the argument to the "-G" flag; if no argument is specified,
858 for backwards compatibility we dump out a glossary of display
861 XXX - we do this here, for now, to support "-G" with no arguments.
862 If none of our build or other processes uses "-G" with no arguments,
863 we can just process it with the other arguments. */
864 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
866 proto_registrar_dump_fields(1);
868 if (strcmp(argv[2], "fields") == 0)
869 proto_registrar_dump_fields(1);
870 else if (strcmp(argv[2], "fields2") == 0)
871 proto_registrar_dump_fields(2);
872 else if (strcmp(argv[2], "fields3") == 0)
873 proto_registrar_dump_fields(3);
874 else if (strcmp(argv[2], "protocols") == 0)
875 proto_registrar_dump_protocols();
876 else if (strcmp(argv[2], "values") == 0)
877 proto_registrar_dump_values();
878 else if (strcmp(argv[2], "decodes") == 0)
879 dissector_dump_decodes();
880 else if (strcmp(argv[2], "defaultprefs") == 0)
882 else if (strcmp(argv[2], "currentprefs") == 0) {
883 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
884 &pf_open_errno, &pf_read_errno, &pf_path);
887 cmdarg_err("Invalid \"%s\" option for -G flag", argv[2]);
894 /* Set the C-language locale to the native environment. */
895 setlocale(LC_ALL, "");
897 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
898 &pf_open_errno, &pf_read_errno, &pf_path);
899 if (gpf_path != NULL) {
900 if (gpf_open_errno != 0) {
901 cmdarg_err("Can't open global preferences file \"%s\": %s.",
902 pf_path, strerror(gpf_open_errno));
904 if (gpf_read_errno != 0) {
905 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
906 pf_path, strerror(gpf_read_errno));
909 if (pf_path != NULL) {
910 if (pf_open_errno != 0) {
911 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
912 strerror(pf_open_errno));
914 if (pf_read_errno != 0) {
915 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
916 pf_path, strerror(pf_read_errno));
922 /* Set the name resolution code's flags from the preferences. */
923 g_resolv_flags = prefs->name_resolve;
925 /* Read the disabled protocols file. */
926 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
927 &dp_path, &dp_open_errno, &dp_read_errno);
928 if (gdp_path != NULL) {
929 if (gdp_open_errno != 0) {
930 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
931 gdp_path, strerror(gdp_open_errno));
933 if (gdp_read_errno != 0) {
934 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
935 gdp_path, strerror(gdp_read_errno));
939 if (dp_path != NULL) {
940 if (dp_open_errno != 0) {
942 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
943 strerror(dp_open_errno));
945 if (dp_read_errno != 0) {
947 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
948 strerror(dp_read_errno));
953 check_capture_privs();
955 init_cap_file(&cfile);
957 /* Assemble the compile-time version information string */
958 comp_info_str = g_string_new("Compiled ");
959 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
961 /* Assemble the run-time version information string */
962 runtime_info_str = g_string_new("Running ");
963 get_runtime_version_info(runtime_info_str, NULL);
965 /* Print format defaults to this. */
966 print_format = PR_FMT_TEXT;
968 output_fields = output_fields_new();
970 /* Now get our args */
971 while ((opt = getopt(argc, argv, optstring)) != -1) {
973 case 'a': /* autostop criteria */
974 case 'b': /* Ringbuffer option */
975 case 'c': /* Capture x packets */
976 case 'f': /* capture filter */
977 case 'i': /* Use interface x */
978 case 'p': /* Don't capture in promiscuous mode */
979 case 's': /* Set the snapshot (capture) length */
980 case 'w': /* Write to capture file x */
981 case 'y': /* Set the pcap data link type */
983 case 'B': /* Buffer size */
986 status = capture_opts_add_opt(&capture_opts, opt, optarg, &start_capture);
991 capture_option_specified = TRUE;
996 /* Configuration profile settings were already processed just ignore them this time*/
998 case 'd': /* Decode as rule */
999 if (!add_decode_as(optarg))
1002 case 'D': /* Print a list of capture devices and exit */
1004 status = capture_opts_list_interfaces(FALSE);
1007 capture_option_specified = TRUE;
1013 output_fields_add(output_fields, optarg);
1017 if(!output_fields_set_option(output_fields, optarg)) {
1018 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1019 output_fields_list_options(stderr);
1024 out_file_type = wtap_short_string_to_file_type(optarg);
1025 if (out_file_type < 0) {
1026 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1027 list_capture_types();
1031 case 'h': /* Print help and exit */
1035 case 'l': /* "Line-buffer" standard output */
1036 /* This isn't line-buffering, strictly speaking, it's just
1037 flushing the standard output after the information for
1038 each packet is printed; however, that should be good
1039 enough for all the purposes to which "-l" is put (and
1040 is probably actually better for "-V", as it does fewer
1043 See the comment in "process_packet()" for an explanation of
1044 why we do that, and why we don't just use "setvbuf()" to
1045 make the standard output line-buffered (short version: in
1046 Windows, "line-buffered" is the same as "fully-buffered",
1047 and the output buffer is only flushed when it fills up). */
1048 line_buffered = TRUE;
1050 case 'L': /* Print list of link-layer types and exit */
1052 list_link_layer_types = TRUE;
1054 capture_option_specified = TRUE;
1058 case 'n': /* No name resolution */
1059 g_resolv_flags = RESOLV_NONE;
1061 case 'N': /* Select what types of addresses/port #s to resolve */
1062 if (g_resolv_flags == RESOLV_ALL)
1063 g_resolv_flags = RESOLV_NONE;
1064 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
1065 if (badopt != '\0') {
1066 cmdarg_err("-N specifies unknown resolving option '%c';",
1068 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1072 case 'o': /* Override preference from command line */
1073 switch (prefs_set_pref(optarg)) {
1078 case PREFS_SET_SYNTAX_ERR:
1079 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1083 case PREFS_SET_NO_SUCH_PREF:
1084 case PREFS_SET_OBSOLETE:
1085 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1090 case 'q': /* Quiet */
1093 case 'r': /* Read capture file x */
1094 cf_name = g_strdup(optarg);
1096 case 'R': /* Read file filter */
1099 case 'S': /* show packets in real time */
1100 print_packet_info = TRUE;
1102 case 't': /* Time stamp type */
1103 if (strcmp(optarg, "r") == 0)
1104 timestamp_set_type(TS_RELATIVE);
1105 else if (strcmp(optarg, "a") == 0)
1106 timestamp_set_type(TS_ABSOLUTE);
1107 else if (strcmp(optarg, "ad") == 0)
1108 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1109 else if (strcmp(optarg, "d") == 0)
1110 timestamp_set_type(TS_DELTA);
1111 else if (strcmp(optarg, "dd") == 0)
1112 timestamp_set_type(TS_DELTA_DIS);
1113 else if (strcmp(optarg, "e") == 0)
1114 timestamp_set_type(TS_EPOCH);
1116 cmdarg_err("Invalid time stamp type \"%s\"",
1118 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1119 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1123 case 'T': /* printing Type */
1124 if (strcmp(optarg, "text") == 0) {
1125 output_action = WRITE_TEXT;
1126 print_format = PR_FMT_TEXT;
1127 } else if (strcmp(optarg, "ps") == 0) {
1128 output_action = WRITE_TEXT;
1129 print_format = PR_FMT_PS;
1130 } else if (strcmp(optarg, "pdml") == 0) {
1131 output_action = WRITE_XML;
1133 } else if (strcmp(optarg, "psml") == 0) {
1134 output_action = WRITE_XML;
1136 } else if(strcmp(optarg, "fields") == 0) {
1137 output_action = WRITE_FIELDS;
1138 verbose = TRUE; /* Need full tree info */
1140 cmdarg_err("Invalid -T parameter.");
1141 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1145 case 'v': /* Show version and exit */
1146 printf("TShark " VERSION "%s\n"
1153 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
1154 runtime_info_str->str);
1157 case 'V': /* Verbose */
1160 case 'x': /* Print packet data in hex (and ASCII) */
1166 /* We won't call the init function for the stat this soon
1167 as it would disallow MATE's fields (which are registered
1168 by the preferences set callback) from being used as
1169 part of a tap filter. Instead, we just add the argument
1170 to a list of stat arguments. */
1171 if (!process_stat_cmd_arg(optarg)) {
1172 cmdarg_err("invalid -z argument.");
1173 cmdarg_err_cont(" -z argument must be one of :");
1174 list_stat_cmd_args();
1179 case '?': /* Bad flag - print usage message */
1182 list_capture_types();
1192 /* If we specified output fields, but not the output field type... */
1193 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1194 cmdarg_err("Output fields were specified with \"-e\", "
1195 "but \"-Tfields\" was not specified.");
1197 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1198 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1199 "specified with \"-e\".");
1204 /* If no capture filter or read filter has been specified, and there are
1205 still command-line arguments, treat them as the tokens of a capture
1206 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1207 flag was specified. */
1208 if (optind < argc) {
1209 if (cf_name != NULL) {
1210 if (rfilter != NULL) {
1211 cmdarg_err("Read filters were specified both with \"-R\" "
1212 "and with additional command-line arguments");
1215 rfilter = get_args_as_string(argc, argv, optind);
1218 if (capture_opts.has_cfilter) {
1219 cmdarg_err("Capture filters were specified both with \"-f\""
1220 " and with additional command-line arguments");
1223 capture_opts.has_cfilter = TRUE;
1224 capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1226 capture_option_specified = TRUE;
1232 if (!capture_opts.saving_to_file) {
1233 /* We're not saving the capture to a file; if "-q" wasn't specified,
1234 we should print packet information */
1236 print_packet_info = TRUE;
1238 /* We're saving to a file; if we're writing to the standard output.
1239 and we'll also be writing dissected packets to the standard
1240 output, reject the request. At best, we could redirect that
1241 to the standard error; we *can't* write both to the standard
1242 output and have either of them be useful. */
1243 if (strcmp(capture_opts.save_file, "-") == 0 && print_packet_info) {
1244 cmdarg_err("You can't write both raw packet data and dissected packets"
1245 " to the standard output.");
1250 /* We're not saving the capture to a file; if "-q" wasn't specified,
1251 we should print packet information */
1253 print_packet_info = TRUE;
1256 #ifndef HAVE_LIBPCAP
1257 if (capture_option_specified)
1258 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1265 /* We don't support capture filters when reading from a capture file
1266 (the BPF compiler doesn't support all link-layer types that we
1267 support in capture files we read). */
1269 if (cf_name != NULL) {
1270 if (capture_opts.has_cfilter) {
1271 cmdarg_err("Only read filters, not capture filters, "
1272 "can be specified when reading a capture file.");
1279 if (output_action != WRITE_TEXT) {
1280 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1286 if (list_link_layer_types) {
1287 /* We're supposed to list the link-layer types for an interface;
1288 did the user also specify a capture file to be read? */
1290 /* Yes - that's bogus. */
1291 cmdarg_err("You can't specify -L and a capture file to be read.");
1294 /* No - did they specify a ring buffer option? */
1295 if (capture_opts.multi_files_on) {
1296 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1302 * "-r" was specified, so we're reading a capture file.
1303 * Capture options don't apply here.
1305 if (capture_opts.multi_files_on) {
1306 cmdarg_err("Multiple capture files requested, but "
1307 "a capture isn't being done.");
1310 if (capture_opts.has_file_duration) {
1311 cmdarg_err("Switching capture files after a time interval was specified, but "
1312 "a capture isn't being done.");
1315 if (capture_opts.has_ring_num_files) {
1316 cmdarg_err("A ring buffer of capture files was specified, but "
1317 "a capture isn't being done.");
1320 if (capture_opts.has_autostop_files) {
1321 cmdarg_err("A maximum number of capture files was specified, but "
1322 "a capture isn't being done.");
1326 /* Note: TShark now allows the restriction of a _read_ file by packet count
1327 * and byte count as well as a write file. Other autostop options remain valid
1328 * only for a write file.
1330 if (capture_opts.has_autostop_duration) {
1331 cmdarg_err("A maximum capture time was specified, but "
1332 "a capture isn't being done.");
1337 * "-r" wasn't specified, so we're doing a live capture.
1339 if (capture_opts.saving_to_file) {
1340 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1342 /* When capturing, we only support writing libpcap format. */
1343 if (out_file_type != WTAP_FILE_PCAP) {
1344 cmdarg_err("Live captures can only be saved in libpcap format.");
1347 if (capture_opts.multi_files_on) {
1348 /* Multiple-file mode doesn't work under certain conditions:
1349 a) it doesn't work if you're writing to the standard output;
1350 b) it doesn't work if you're writing to a pipe;
1352 if (strcmp(capture_opts.save_file, "-") == 0) {
1353 cmdarg_err("Multiple capture files requested, but "
1354 "the capture is being written to the standard output.");
1357 if (capture_opts.output_to_pipe) {
1358 cmdarg_err("Multiple capture files requested, but "
1359 "the capture file is a pipe.");
1362 if (!capture_opts.has_autostop_filesize &&
1363 !capture_opts.has_file_duration) {
1364 cmdarg_err("Multiple capture files requested, but "
1365 "no maximum capture file size or duration was specified.");
1370 /* They didn't specify a "-w" flag, so we won't be saving to a
1371 capture file. Check for options that only make sense if
1372 we're saving to a file. */
1373 if (capture_opts.has_autostop_filesize) {
1374 cmdarg_err("Maximum capture file size specified, but "
1375 "capture isn't being saved to a file.");
1378 if (capture_opts.multi_files_on) {
1379 cmdarg_err("Multiple capture files requested, but "
1380 "the capture isn't being saved to a file.");
1389 /* Start windows sockets */
1390 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1393 /* Notify all registered modules that have had any of their preferences
1394 changed either from one of the preferences file or from the command
1395 line that their preferences have changed. */
1398 /* At this point MATE will have registered its field array so we can
1399 have a tap filter with one of MATE's late-registered fields as part
1400 of the filter. We can now process all the "-z" arguments. */
1401 start_requested_stats();
1403 /* disabled protocols as per configuration file */
1404 if (gdp_path == NULL && dp_path == NULL) {
1405 set_disabled_protos_list();
1408 /* Build the column format array */
1409 col_setup(&cfile.cinfo, prefs->num_cols);
1410 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1411 cfile.cinfo.col_fmt[i] = get_column_format(i);
1412 cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
1413 cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
1415 get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
1416 cfile.cinfo.col_data[i] = NULL;
1417 if (cfile.cinfo.col_fmt[i] == COL_INFO)
1418 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
1420 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1421 cfile.cinfo.col_fence[i] = 0;
1422 cfile.cinfo.col_expr.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1423 cfile.cinfo.col_expr.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1426 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1429 for (j = 0; j < NUM_COL_FMTS; j++) {
1430 if (!cfile.cinfo.fmt_matx[i][j])
1433 if (cfile.cinfo.col_first[j] == -1)
1434 cfile.cinfo.col_first[j] = i;
1435 cfile.cinfo.col_last[j] = i;
1440 capture_opts_trim_snaplen(&capture_opts, MIN_PACKET_SIZE);
1441 capture_opts_trim_ring_num_files(&capture_opts);
1444 if (rfilter != NULL) {
1445 if (!dfilter_compile(rfilter, &rfcode)) {
1446 cmdarg_err("%s", dfilter_error_msg);
1448 #ifdef HAVE_PCAP_OPEN_DEAD
1452 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1454 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1456 " Note: That display filter code looks like a valid capture filter;");
1458 " maybe you mixed them up?");
1467 cfile.rfcode = rfcode;
1469 if (print_packet_info) {
1470 /* If we're printing as text or PostScript, we have
1471 to create a print stream. */
1472 if (output_action == WRITE_TEXT) {
1473 switch (print_format) {
1476 print_stream = print_stream_text_stdio_new(stdout);
1480 print_stream = print_stream_ps_stdio_new(stdout);
1484 g_assert_not_reached();
1489 /* We have to dissect each packet if:
1491 we're printing information about each packet;
1493 we're using a read filter on the packets;
1495 we're using any taps. */
1496 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1500 * We're reading a capture file.
1504 * Immediately relinquish any special privileges we have; we must not
1505 * be allowed to read any capture files the user running TShark
1508 relinquish_special_privs_perm();
1509 print_current_user();
1511 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1516 /* Set timestamp precision; there should arguably be a command-line
1517 option to let the user set this. */
1518 switch(wtap_file_tsprecision(cfile.wth)) {
1519 case(WTAP_FILE_TSPREC_SEC):
1520 timestamp_set_precision(TS_PREC_AUTO_SEC);
1522 case(WTAP_FILE_TSPREC_DSEC):
1523 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1525 case(WTAP_FILE_TSPREC_CSEC):
1526 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1528 case(WTAP_FILE_TSPREC_MSEC):
1529 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1531 case(WTAP_FILE_TSPREC_USEC):
1532 timestamp_set_precision(TS_PREC_AUTO_USEC);
1534 case(WTAP_FILE_TSPREC_NSEC):
1535 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1538 g_assert_not_reached();
1541 /* Process the packets in the file */
1543 err = load_cap_file(&cfile, capture_opts.save_file, out_file_type,
1544 capture_opts.has_autostop_packets ? capture_opts.autostop_packets : 0,
1545 capture_opts.has_autostop_filesize ? capture_opts.autostop_filesize : 0);
1547 err = load_cap_file(&cfile, NULL, out_file_type, 0, 0);
1555 /* No capture file specified, so we're supposed to do a live capture
1556 (or get a list of link-layer types for a live capture device);
1557 do we have support for live captures? */
1564 cmdarg_err("WinPcap couldn't be found.");
1565 detailed_err = cant_load_winpcap_err("TShark");
1566 cmdarg_err_cont("%s", detailed_err);
1567 g_free(detailed_err);
1572 /* trim the interface name and exit if that failed */
1573 if (!capture_opts_trim_iface(&capture_opts,
1574 (prefs->capture_device) ? get_if_name(prefs->capture_device) : NULL)) {
1578 /* if requested, list the link layer types and exit */
1579 if (list_link_layer_types) {
1580 status = capture_opts_list_link_layer_types(&capture_opts, FALSE);
1584 if (print_packet_info) {
1585 if (!write_preamble(NULL)) {
1587 show_print_file_io_error(err);
1590 } else if (!quiet) {
1592 * We're not printing information for each packet, and the user
1593 * didn't ask us not to print a count of packets as they arrive,
1594 * so print that count so the user knows that packets are arriving.
1596 * XXX - what if the user wants to do a live capture, doesn't want
1597 * to save it to a file, doesn't want information printed for each
1598 * packet, does want some "-z" statistic, and wants packet counts
1599 * so they know whether they're seeing any packets?
1601 print_packet_counts = TRUE;
1604 /* For now, assume libpcap gives microsecond precision. */
1605 timestamp_set_precision(TS_PREC_AUTO_USEC);
1609 if (print_packet_info) {
1610 if (!write_finale()) {
1612 show_print_file_io_error(err);
1616 /* No - complain. */
1617 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1622 draw_tap_listeners(TRUE);
1623 funnel_dump_all_text_windows();
1626 output_fields_free(output_fields);
1627 output_fields = NULL;
1632 /*#define USE_BROKEN_G_MAIN_LOOP*/
1634 #ifdef USE_BROKEN_G_MAIN_LOOP
1637 gboolean loop_running = FALSE;
1639 guint32 packet_count = 0;
1642 /* XXX - move to the right position / file */
1643 /* read from a pipe (callback) */
1644 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1646 typedef struct pipe_input_tag {
1650 pipe_input_cb_t input_cb;
1651 guint pipe_input_id;
1653 GStaticMutex callback_running;
1657 static pipe_input_t pipe_input;
1660 /* The timer has expired, see if there's stuff to read from the pipe,
1661 if so, do the callback */
1663 pipe_timer_cb(gpointer data)
1667 gboolean result, result1;
1669 pipe_input_t *pipe_input = data;
1670 gint iterations = 0;
1673 g_static_mutex_lock (&pipe_input->callback_running);
1675 /* try to read data from the pipe only 5 times, to avoid blocking */
1676 while(iterations < 5) {
1677 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1679 /* Oddly enough although Named pipes don't work on win9x,
1680 PeekNamedPipe does !!! */
1681 handle = (HANDLE) _get_osfhandle (pipe_input->source);
1682 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1684 /* Get the child process exit status */
1685 result1 = GetExitCodeProcess((HANDLE)*(pipe_input->child_process),
1688 /* If the Peek returned an error, or there are bytes to be read
1689 or the childwatcher thread has terminated then call the normal
1691 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1693 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1695 /* And call the real handler */
1696 if (!pipe_input->input_cb(pipe_input->source, pipe_input->user_data)) {
1697 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1698 /* pipe closed, return false so that the timer is stopped */
1699 g_static_mutex_unlock (&pipe_input->callback_running);
1704 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1705 /* No data, stop now */
1712 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1714 g_static_mutex_unlock (&pipe_input->callback_running);
1716 /* we didn't stopped the timer, so let it run */
1723 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1726 pipe_input.source = source;
1727 pipe_input.child_process = child_process;
1728 pipe_input.user_data = user_data;
1729 pipe_input.input_cb = input_cb;
1732 g_static_mutex_init(&pipe_input.callback_running);
1733 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1734 do this but that doesn't cover all win32 platforms. GTK can do
1735 this but doesn't seem to work over processes. Attempt to do
1736 something similar here, start a timer and check for data on every
1738 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1739 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1749 #ifdef USE_TSHARK_SELECT
1753 struct sigaction action, oldaction;
1757 * XXX - dropping privileges is still required, until code cleanup is done
1759 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1760 * when it's done, we don't need special privileges to run tshark at all,
1761 * therefore we don't need to drop these privileges
1762 * The only thing we might want to keep is a warning if tshark is run as root,
1763 * as it's no longer necessary and potentially dangerous.
1765 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1766 * We've opened the capture device, so we shouldn't need any special
1767 * privileges any more; relinquish those privileges.
1769 * XXX - if we have saved set-user-ID support, we should give up those
1770 * privileges immediately, and then reclaim them long enough to get
1771 * a list of network interfaces and to open one, and then give them
1772 * up again, so that stuff we do while processing the argument list,
1773 * reading the user's preferences, loading and starting plugins
1774 * (especially *user* plugins), etc. is done with the user's privileges,
1775 * not special privileges.
1777 relinquish_special_privs_perm();
1778 print_current_user();
1780 /* Initialize all data structures used for dissection. */
1784 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
1785 SetConsoleCtrlHandler(capture_cleanup, TRUE);
1787 /* Catch SIGINT and SIGTERM and, if we get either of them, clean up
1789 action.sa_handler = capture_cleanup;
1790 action.sa_flags = 0;
1791 sigemptyset(&action.sa_mask);
1792 sigaction(SIGTERM, &action, NULL);
1793 sigaction(SIGINT, &action, NULL);
1794 sigaction(SIGHUP, NULL, &oldaction);
1795 if (oldaction.sa_handler == SIG_DFL)
1796 sigaction(SIGHUP, &action, NULL);
1799 /* Catch SIGINFO and, if we get it and we're capturing to a file in
1800 quiet mode, report the number of packets we've captured. */
1801 action.sa_handler = report_counts_siginfo;
1802 action.sa_flags = 0;
1803 sigemptyset(&action.sa_mask);
1804 sigaction(SIGINFO, &action, NULL);
1805 #endif /* SIGINFO */
1808 capture_opts.state = CAPTURE_PREPARING;
1810 /* Let the user know what interface was chosen. */
1811 capture_opts.iface_descr = get_interface_descriptive_name(capture_opts.iface);
1812 fprintf(stderr, "Capturing on %s\n", capture_opts.iface_descr);
1814 ret = sync_pipe_start(&capture_opts);
1819 /* the actual capture loop
1821 * XXX - glib doesn't seem to provide any event based loop handling.
1823 * XXX - for whatever reason,
1824 * calling g_main_loop_new() ends up in 100% cpu load.
1826 * But that doesn't matter: in UNIX we can use select() to find an input
1827 * source with something to do.
1829 * But that doesn't matter because we're in a CLI (that doesn't need to
1830 * update a GUI or something at the same time) so it's OK if we block
1831 * trying to read from the pipe.
1833 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
1834 * wrong (but I leave it there in case I am...).
1837 #ifdef USE_TSHARK_SELECT
1839 FD_SET(pipe_input.source, &readfds);
1842 loop_running = TRUE;
1844 while (loop_running)
1846 #ifdef USE_TSHARK_SELECT
1847 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
1853 } else if (ret == 1) {
1855 /* Call the real handler */
1856 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
1857 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
1860 #ifdef USE_TSHARK_SELECT
1869 /* XXX - move the call to main_window_update() out of capture_sync.c */
1870 /* dummy for capture_sync.c to make linker happy */
1871 void main_window_update(void)
1875 /* XXX - move the call to simple_dialog() out of capture_sync.c */
1876 #include "simple_dialog.h"
1878 /* capture_sync.c want's to tell us an error */
1879 gpointer simple_dialog(ESD_TYPE_E type _U_, gint btn_mask _U_,
1880 const gchar *msg_format, ...)
1884 /* XXX - do we need to display buttons and alike? */
1885 va_start(ap, msg_format);
1886 fprintf(stderr, "tshark: ");
1887 vfprintf(stderr, msg_format, ap);
1888 fprintf(stderr, "\n");
1895 /* capture child detected an error */
1897 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
1899 cmdarg_err("%s", error_msg);
1900 cmdarg_err_cont("%s", secondary_error_msg);
1904 /* capture child detected an capture filter related error */
1906 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
1908 dfilter_t *rfcode = NULL;
1911 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
1913 "Invalid capture filter: \"%s\"!\n"
1915 "That string looks like a valid display filter; however, it isn't a valid\n"
1916 "capture filter (%s).\n"
1918 "Note that display filters and capture filters don't have the same syntax,\n"
1919 "so you can't use most display filter expressions as capture filters.\n"
1921 "See the User's Guide for a description of the capture filter syntax.",
1922 capture_opts->cfilter, error_message);
1923 dfilter_free(rfcode);
1926 "Invalid capture filter: \"%s\"!\n"
1928 "That string isn't a valid capture filter (%s).\n"
1929 "See the User's Guide for a description of the capture filter syntax.",
1930 capture_opts->cfilter, error_message);
1935 /* capture child tells us we have a new (or the first) capture file */
1937 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
1939 gboolean is_tempfile;
1943 if(capture_opts->state == CAPTURE_PREPARING) {
1944 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
1946 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
1948 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
1950 capture_opts->cf = &cfile;
1952 /* free the old filename */
1953 if(capture_opts->save_file != NULL) {
1954 /* we start a new capture file, close the old one (if we had one before) */
1955 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
1956 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
1957 wtap_close(((capture_file *) capture_opts->cf)->wth);
1960 g_free(capture_opts->save_file);
1961 is_tempfile = FALSE;
1963 /* we didn't had a save_file before, must be a tempfile */
1967 /* save the new filename */
1968 capture_opts->save_file = g_strdup(new_file);
1970 /* if we are in real-time mode, open the new file now */
1972 /* Attempt to open the capture file and set up to read from it. */
1973 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
1977 /* Don't unlink (delete) the save file - leave it around,
1978 for debugging purposes. */
1979 g_free(capture_opts->save_file);
1980 capture_opts->save_file = NULL;
1986 capture_opts->state = CAPTURE_RUNNING;
1992 /* capture child tells us we have new packets to read */
1994 capture_input_new_packets(capture_options *capture_opts, int to_read)
2000 capture_file *cf = capture_opts->cf;
2005 * Prevent a SIGINFO handler from writing to stdout while we're
2006 * doing so; instead, have it just set a flag telling us to print
2007 * that information when we're done.
2010 #endif /* SIGINFO */
2013 while (to_read-- && cf->wth) {
2014 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2016 /* read from file failed, tell the capture child to stop */
2017 sync_pipe_stop(capture_opts);
2018 wtap_close(cf->wth);
2021 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2022 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth));
2025 /* packet sucessfully read and gone through the "Read Filter" */
2031 * Dumpcap's doing all the work; we're not doing any dissection.
2032 * Count all the packets it wrote.
2034 packet_count += to_read;
2037 if (print_packet_counts) {
2038 /* We're printing packet counts. */
2039 if (packet_count != 0) {
2040 fprintf(stderr, "\r%u ", packet_count);
2041 /* stderr could be line buffered */
2048 * Allow SIGINFO handlers to write.
2053 * If a SIGINFO handler asked us to write out capture counts, do so.
2057 #endif /* SIGINFO */
2063 if (!print_packet_counts) {
2064 /* Report the count only if we aren't printing a packet count
2065 as packets arrive. */
2066 fprintf(stderr, "%u packet%s captured\n", packet_count,
2067 plurality(packet_count, "", "s"));
2070 infoprint = FALSE; /* we just reported it */
2071 #endif /* SIGINFO */
2076 report_counts_siginfo(int signum _U_)
2078 int sav_errno = errno;
2079 /* If we've been told to delay printing, just set a flag asking
2080 that we print counts (if we're supposed to), otherwise print
2081 the count of packets captured (if we're supposed to). */
2088 #endif /* SIGINFO */
2091 /* capture child detected any packet drops? */
2093 capture_input_drops(capture_options *capture_opts _U_, int dropped)
2095 if (print_packet_counts) {
2096 /* We're printing packet counts to stderr.
2097 Send a newline so that we move to the line after the packet count. */
2098 fprintf(stderr, "\n");
2102 /* We're printing packet counts to stderr.
2103 Send a newline so that we move to the line after the packet count. */
2104 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2109 /* capture child closed its side of the pipe, do the required cleanup */
2111 capture_input_closed(capture_options *capture_opts)
2115 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2116 wtap_close(((capture_file *) capture_opts->cf)->wth);
2118 #ifdef USE_BROKEN_G_MAIN_LOOP
2119 /*g_main_loop_quit(loop);*/
2122 loop_running = FALSE;
2131 capture_cleanup(DWORD ctrltype _U_)
2133 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2134 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2135 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2136 like SIGTERM at least when the machine's shutting down.
2138 For now, we handle them all as indications that we should clean up
2139 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2142 However, as handlers run in a new thread, we can't just longjmp
2143 out; we have to set "ld.go" to FALSE, and must return TRUE so that
2144 no other handler - such as one that would terminate the process -
2147 XXX - for some reason, typing ^C to TShark, if you run this in
2148 a Cygwin console window in at least some versions of Cygwin,
2149 causes TShark to terminate immediately; this routine gets
2150 called, but the main loop doesn't get a chance to run and
2151 exit cleanly, at least if this is compiled with Microsoft Visual
2152 C++ (i.e., it's a property of the Cygwin console window or Bash;
2153 it happens if TShark is not built with Cygwin - for all I know,
2154 building it with Cygwin may make the problem go away). */
2156 /* tell the capture child to stop */
2157 sync_pipe_stop(&capture_opts);
2159 /* don't stop our own loop already here, otherwise status messages and
2160 * cleanup wouldn't be done properly. The child will indicate the stop of
2161 * everything by calling capture_input_closed() later */
2167 capture_cleanup(int signum _U_)
2169 /* tell the capture child to stop */
2170 sync_pipe_stop(&capture_opts);
2173 #endif /* HAVE_LIBPCAP */
2176 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2177 int max_packet_count, gint64 max_byte_count)
2180 int snapshot_length;
2185 char *save_file_string = NULL;
2187 linktype = wtap_file_encap(cf->wth);
2188 if (save_file != NULL) {
2189 /* Get a string that describes what we're writing to */
2190 save_file_string = output_file_description(save_file);
2192 /* Set up to write to the capture file. */
2193 snapshot_length = wtap_snapshot_length(cf->wth);
2194 if (snapshot_length == 0) {
2195 /* Snapshot length of input file not known. */
2196 snapshot_length = WTAP_MAX_PACKET_SIZE;
2198 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2199 FALSE /* compressed */, &err);
2202 /* We couldn't set up to write to the capture file. */
2205 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2206 cmdarg_err("Capture files can't be written in that format.");
2209 case WTAP_ERR_UNSUPPORTED_ENCAP:
2210 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2211 cmdarg_err("The capture file being read can't be written in "
2215 case WTAP_ERR_CANT_OPEN:
2216 cmdarg_err("The %s couldn't be created for some "
2217 "unknown reason.", save_file_string);
2220 case WTAP_ERR_SHORT_WRITE:
2221 cmdarg_err("A full header couldn't be written to the %s.",
2226 cmdarg_err("The %s could not be created: %s.", save_file_string,
2227 wtap_strerror(err));
2233 if (print_packet_info) {
2234 if (!write_preamble(cf)) {
2236 show_print_file_io_error(err);
2242 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2243 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2244 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2245 /* Either there's no read filtering or this packet passed the
2246 filter, so, if we're writing to a capture file, write
2249 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2250 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2252 /* Error writing to a capture file */
2253 show_capture_file_io_error(save_file, err, FALSE);
2254 wtap_dump_close(pdh, &err);
2258 /* Stop reading if we have the maximum number of packets;
2259 * When the -c option has not been used, max_packet_count
2260 * starts at 0, which practically means, never stop reading.
2261 * (unless we roll over max_packet_count ?)
2263 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2264 err = 0; /* This is not an error */
2270 /* Print a message noting that the read failed somewhere along the line. */
2273 case WTAP_ERR_UNSUPPORTED_ENCAP:
2274 cmdarg_err("\"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2275 cf->filename, err_info);
2278 case WTAP_ERR_CANT_READ:
2279 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
2283 case WTAP_ERR_SHORT_READ:
2284 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
2288 case WTAP_ERR_BAD_RECORD:
2289 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
2290 cf->filename, err_info);
2294 cmdarg_err("An error occurred while reading \"%s\": %s.",
2295 cf->filename, wtap_strerror(err));
2298 if (save_file != NULL) {
2299 /* Now close the capture file. */
2300 if (!wtap_dump_close(pdh, &err))
2301 show_capture_file_io_error(save_file, err, TRUE);
2304 if (save_file != NULL) {
2305 /* Now close the capture file. */
2306 if (!wtap_dump_close(pdh, &err))
2307 show_capture_file_io_error(save_file, err, TRUE);
2309 if (print_packet_info) {
2310 if (!write_finale()) {
2312 show_print_file_io_error(err);
2319 wtap_close(cf->wth);
2322 if (save_file_string != NULL)
2323 g_free(save_file_string);
2329 fill_in_fdata(frame_data *fdata, capture_file *cf,
2330 const struct wtap_pkthdr *phdr, gint64 offset)
2335 fdata->num = cf->count;
2336 fdata->pkt_len = phdr->len;
2337 cum_bytes += phdr->len;
2338 fdata->cum_bytes = cum_bytes;
2339 fdata->cap_len = phdr->caplen;
2340 fdata->file_off = offset;
2341 fdata->lnk_t = phdr->pkt_encap;
2342 fdata->abs_ts.secs = phdr->ts.secs;
2343 fdata->abs_ts.nsecs = phdr->ts.nsecs;
2344 fdata->flags.passed_dfilter = 0;
2345 fdata->flags.encoding = CHAR_ASCII;
2346 fdata->flags.visited = 0;
2347 fdata->flags.marked = 0;
2348 fdata->flags.ref_time = 0;
2349 fdata->color_filter = NULL;
2351 /* If we don't have the time stamp of the first packet in the
2352 capture, it's because this is the first packet. Save the time
2353 stamp of this packet as the time stamp of the first packet. */
2354 if (nstime_is_unset(&first_ts)) {
2355 first_ts = fdata->abs_ts;
2358 /* If we don't have the time stamp of the previous captured packet,
2359 it's because this is the first packet. Save the time
2360 stamp of this packet as the time stamp of the previous captured
2362 if (nstime_is_unset(&prev_cap_ts)) {
2363 prev_cap_ts = fdata->abs_ts;
2366 /* Get the time elapsed between the first packet and this packet. */
2367 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2369 /* If it's greater than the current elapsed time, set the elapsed time
2370 to it (we check for "greater than" so as not to be confused by
2371 time moving backwards). */
2372 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2373 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2374 cf->elapsed_time = fdata->rel_ts;
2377 /* Get the time elapsed between the previous displayed packet and
2379 if (nstime_is_unset(&prev_dis_ts))
2380 nstime_set_zero(&fdata->del_dis_ts);
2382 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
2384 /* Get the time elapsed between the previous captured packet and
2386 nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
2387 prev_cap_ts = fdata->abs_ts;
2390 /* Free up all data attached to a "frame_data" structure. */
2392 clear_fdata(frame_data *fdata)
2395 g_slist_free(fdata->pfd);
2399 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2400 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2403 gboolean create_proto_tree;
2404 epan_dissect_t *edt;
2407 /* Count this packet. */
2410 /* If we're going to print packet information, or we're going to
2411 run a read filter, or we're going to process taps, set up to
2412 do a dissection and do so. */
2413 if (do_dissection) {
2414 fill_in_fdata(&fdata, cf, whdr, offset);
2416 if (print_packet_info) {
2417 /* Grab any resolved addresses */
2419 if (g_resolv_flags) {
2420 host_name_lookup_process(NULL);
2425 if (cf->rfcode || verbose || num_tap_filters!=0)
2426 create_proto_tree = TRUE;
2428 create_proto_tree = FALSE;
2429 /* The protocol tree will be "visible", i.e., printed, only if we're
2430 printing packet details, which is true if we're printing stuff
2431 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2433 edt = epan_dissect_new(create_proto_tree, print_packet_info && verbose);
2435 /* If we're running a read filter, prime the epan_dissect_t with that
2438 epan_dissect_prime_dfilter(edt, cf->rfcode);
2440 tap_queue_init(edt);
2442 /* We only need the columns if we're printing packet info but we're
2443 *not* verbose; in verbose mode, we print the protocol tree, not
2444 the protocol summary. */
2445 epan_dissect_run(edt, pseudo_header, pd, &fdata,
2446 (print_packet_info && !verbose) ? &cf->cinfo : NULL);
2448 tap_push_tapped_queue(edt);
2450 /* Run the read filter if we have one. */
2452 passed = dfilter_apply_edt(cf->rfcode, edt);
2456 /* We're not running a display filter and we're not printing any
2457 packet information, so we don't need to do a dissection, and all
2458 packets are processed. */
2464 /* Keep the time of the current packet if the packet passed
2465 the read filter so that the delta time since last displayed
2466 packet can be calculated */
2467 prev_dis_ts = fdata.abs_ts;
2469 /* Process this packet. */
2470 if (print_packet_info) {
2471 /* We're printing packet information; print the information for
2473 print_packet(cf, edt);
2475 /* The ANSI C standard does not appear to *require* that a line-buffered
2476 stream be flushed to the host environment whenever a newline is
2477 written, it just says that, on such a stream, characters "are
2478 intended to be transmitted to or from the host environment as a
2479 block when a new-line character is encountered".
2481 The Visual C++ 6.0 C implementation doesn't do what is intended;
2482 even if you set a stream to be line-buffered, it still doesn't
2483 flush the buffer at the end of every line.
2485 So, if the "-l" flag was specified, we flush the standard output
2486 at the end of a packet. This will do the right thing if we're
2487 printing packet summary lines, and, as we print the entire protocol
2488 tree for a single packet without waiting for anything to happen,
2489 it should be as good as line-buffered mode if we're printing
2490 protocol trees. (The whole reason for the "-l" flag in either
2491 tcpdump or TShark is to allow the output of a live capture to
2492 be piped to a program or script and to have that script see the
2493 information for the packet as soon as it's printed, rather than
2494 having to wait until a standard I/O buffer fills up. */
2498 if (ferror(stdout)) {
2499 show_print_file_io_error(errno);
2505 if (do_dissection) {
2506 epan_dissect_free(edt);
2507 clear_fdata(&fdata);
2513 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
2515 char *save_file_string;
2517 save_file_string = output_file_description(fname);
2522 cmdarg_err("Not all the packets could be written to the %s because there is "
2523 "no space left on the file system.",
2529 cmdarg_err("Not all the packets could be written to the %s because you are "
2530 "too close to, or over your disk quota.",
2535 case WTAP_ERR_CANT_CLOSE:
2536 cmdarg_err("The %s couldn't be closed for some unknown reason.",
2540 case WTAP_ERR_SHORT_WRITE:
2541 cmdarg_err("Not all the packets could be written to the %s.",
2547 cmdarg_err("The %s could not be closed: %s.", save_file_string,
2548 wtap_strerror(err));
2550 cmdarg_err("An error occurred while writing to the %s: %s.",
2551 save_file_string, wtap_strerror(err));
2555 g_free(save_file_string);
2559 write_preamble(capture_file *cf)
2561 switch (output_action) {
2564 return print_preamble(print_stream, cf ? cf->filename : NULL);
2568 write_pdml_preamble(stdout);
2570 write_psml_preamble(stdout);
2571 return !ferror(stdout);
2574 write_fields_preamble(output_fields, stdout);
2575 return !ferror(stdout);
2578 g_assert_not_reached();
2584 get_line_buf(size_t len)
2586 static char *line_bufp = NULL;
2587 static size_t line_buf_len = 256;
2588 size_t new_line_buf_len;
2590 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
2591 new_line_buf_len *= 2)
2593 if (line_bufp == NULL) {
2594 line_buf_len = new_line_buf_len;
2595 line_bufp = g_malloc(line_buf_len + 1);
2597 if (new_line_buf_len > line_buf_len) {
2598 line_buf_len = new_line_buf_len;
2599 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
2606 print_columns(capture_file *cf)
2613 line_bufp = get_line_buf(256);
2616 for (i = 0; i < cf->cinfo.num_cols; i++) {
2617 switch (cf->cinfo.col_fmt[i]) {
2621 * Don't print this if we're doing a live capture from a network
2622 * interface - if we're doing a live capture, you won't be
2623 * able to look at the capture in the future (it's not being
2624 * saved anywhere), so the frame numbers are unlikely to be
2627 * (XXX - it might be nice to be able to save and print at
2628 * the same time, sort of like an "Update list of packets
2629 * in real time" capture in Wireshark.)
2631 if (capture_opts.iface != NULL)
2634 column_len = strlen(cf->cinfo.col_data[i]);
2637 line_bufp = get_line_buf(buf_offset + column_len);
2638 sprintf(line_bufp + buf_offset, "%3s", cf->cinfo.col_data[i]);
2644 case COL_ABS_DATE_TIME: /* XXX - wider */
2645 column_len = strlen(cf->cinfo.col_data[i]);
2646 if (column_len < 10)
2648 line_bufp = get_line_buf(buf_offset + column_len);
2649 sprintf(line_bufp + buf_offset, "%10s", cf->cinfo.col_data[i]);
2655 case COL_DEF_DL_SRC:
2656 case COL_RES_DL_SRC:
2657 case COL_UNRES_DL_SRC:
2658 case COL_DEF_NET_SRC:
2659 case COL_RES_NET_SRC:
2660 case COL_UNRES_NET_SRC:
2661 column_len = strlen(cf->cinfo.col_data[i]);
2662 if (column_len < 12)
2664 line_bufp = get_line_buf(buf_offset + column_len);
2665 sprintf(line_bufp + buf_offset, "%12s", cf->cinfo.col_data[i]);
2671 case COL_DEF_DL_DST:
2672 case COL_RES_DL_DST:
2673 case COL_UNRES_DL_DST:
2674 case COL_DEF_NET_DST:
2675 case COL_RES_NET_DST:
2676 case COL_UNRES_NET_DST:
2677 column_len = strlen(cf->cinfo.col_data[i]);
2678 if (column_len < 12)
2680 line_bufp = get_line_buf(buf_offset + column_len);
2681 sprintf(line_bufp + buf_offset, "%-12s", cf->cinfo.col_data[i]);
2685 column_len = strlen(cf->cinfo.col_data[i]);
2686 line_bufp = get_line_buf(buf_offset + column_len);
2687 strcat(line_bufp + buf_offset, cf->cinfo.col_data[i]);
2690 buf_offset += column_len;
2691 if (i != cf->cinfo.num_cols - 1) {
2693 * This isn't the last column, so we need to print a
2694 * separator between this column and the next.
2696 * If we printed a network source and are printing a
2697 * network destination of the same type next, separate
2698 * them with "->"; if we printed a network destination
2699 * and are printing a network source of the same type
2700 * next, separate them with "<-"; otherwise separate them
2703 * We add enough space to the buffer for " <- " or " -> ",
2704 * even if we're only adding " ".
2706 line_bufp = get_line_buf(buf_offset + 4);
2707 switch (cf->cinfo.col_fmt[i]) {
2712 switch (cf->cinfo.col_fmt[i + 1]) {
2717 strcat(line_bufp + buf_offset, " -> ");
2722 strcat(line_bufp + buf_offset, " ");
2728 case COL_DEF_DL_SRC:
2729 case COL_RES_DL_SRC:
2730 case COL_UNRES_DL_SRC:
2731 switch (cf->cinfo.col_fmt[i + 1]) {
2733 case COL_DEF_DL_DST:
2734 case COL_RES_DL_DST:
2735 case COL_UNRES_DL_DST:
2736 strcat(line_bufp + buf_offset, " -> ");
2741 strcat(line_bufp + buf_offset, " ");
2747 case COL_DEF_NET_SRC:
2748 case COL_RES_NET_SRC:
2749 case COL_UNRES_NET_SRC:
2750 switch (cf->cinfo.col_fmt[i + 1]) {
2752 case COL_DEF_NET_DST:
2753 case COL_RES_NET_DST:
2754 case COL_UNRES_NET_DST:
2755 strcat(line_bufp + buf_offset, " -> ");
2760 strcat(line_bufp + buf_offset, " ");
2769 switch (cf->cinfo.col_fmt[i + 1]) {
2774 strcat(line_bufp + buf_offset, " <- ");
2779 strcat(line_bufp + buf_offset, " ");
2785 case COL_DEF_DL_DST:
2786 case COL_RES_DL_DST:
2787 case COL_UNRES_DL_DST:
2788 switch (cf->cinfo.col_fmt[i + 1]) {
2790 case COL_DEF_DL_SRC:
2791 case COL_RES_DL_SRC:
2792 case COL_UNRES_DL_SRC:
2793 strcat(line_bufp + buf_offset, " <- ");
2798 strcat(line_bufp + buf_offset, " ");
2804 case COL_DEF_NET_DST:
2805 case COL_RES_NET_DST:
2806 case COL_UNRES_NET_DST:
2807 switch (cf->cinfo.col_fmt[i + 1]) {
2809 case COL_DEF_NET_SRC:
2810 case COL_RES_NET_SRC:
2811 case COL_UNRES_NET_SRC:
2812 strcat(line_bufp + buf_offset, " <- ");
2817 strcat(line_bufp + buf_offset, " ");
2824 strcat(line_bufp + buf_offset, " ");
2830 return print_line(print_stream, 0, line_bufp);
2834 print_packet(capture_file *cf, epan_dissect_t *edt)
2836 print_args_t print_args;
2839 /* Print the information in the protocol tree. */
2840 switch (output_action) {
2843 print_args.to_file = TRUE;
2844 print_args.format = print_format;
2845 print_args.print_summary = !verbose;
2846 print_args.print_hex = verbose && print_hex;
2847 print_args.print_formfeed = FALSE;
2848 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
2850 /* init the packet range */
2851 packet_range_init(&print_args.range);
2853 if (!proto_tree_print(&print_args, edt, print_stream))
2856 /* "print_hex_data()" will put out a leading blank line, as well
2857 as a trailing one; print one here, to separate the packets,
2858 only if "print_hex_data()" won't be called. */
2859 if (!print_line(print_stream, 0, ""))
2865 proto_tree_write_pdml(edt, stdout);
2867 return !ferror(stdout);
2869 proto_tree_write_fields(output_fields, edt, stdout);
2871 return !ferror(stdout);
2874 /* Just fill in the columns. */
2875 epan_dissect_fill_in_columns(edt);
2877 /* Now print them. */
2878 switch (output_action) {
2881 if (!print_columns(cf))
2886 proto_tree_write_psml(edt, stdout);
2887 return !ferror(stdout);
2888 case WRITE_FIELDS: /*No non-verbose "fields" format */
2889 g_assert_not_reached();
2894 if (!print_hex_data(print_stream, edt))
2896 if (!print_line(print_stream, 0, ""))
2905 switch (output_action) {
2908 return print_finale(print_stream);
2912 write_pdml_finale(stdout);
2914 write_psml_finale(stdout);
2915 return !ferror(stdout);
2918 write_fields_finale(output_fields, stdout);
2919 return !ferror(stdout);
2922 g_assert_not_reached();
2928 show_print_file_io_error(int err)
2933 cmdarg_err("Not all the packets could be printed because there is "
2934 "no space left on the file system.");
2939 cmdarg_err("Not all the packets could be printed because you are "
2940 "too close to, or over your disk quota.");
2945 cmdarg_err("An error occurred while printing packets: %s.",
2952 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
2956 static char errmsg_errno[1024+1];
2959 /* Wiretap error. */
2962 case WTAP_ERR_NOT_REGULAR_FILE:
2963 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
2966 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
2967 /* Seen only when opening a capture file for reading. */
2968 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
2971 case WTAP_ERR_UNSUPPORTED:
2972 /* Seen only when opening a capture file for reading. */
2973 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2974 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
2977 errmsg = errmsg_errno;
2980 case WTAP_ERR_CANT_WRITE_TO_PIPE:
2981 /* Seen only when opening a capture file for writing. */
2982 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2983 "The file \"%%s\" is a pipe, and %s capture files can't be "
2984 "written to a pipe.", wtap_file_type_string(file_type));
2985 errmsg = errmsg_errno;
2988 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2989 /* Seen only when opening a capture file for writing. */
2990 errmsg = "TShark doesn't support writing capture files in that format.";
2993 case WTAP_ERR_UNSUPPORTED_ENCAP:
2995 errmsg = "TShark can't save this capture in that format.";
2997 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2998 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
3001 errmsg = errmsg_errno;
3005 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3007 errmsg = "TShark can't save this capture in that format.";
3009 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3012 case WTAP_ERR_BAD_RECORD:
3013 /* Seen only when opening a capture file for reading. */
3014 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3015 "The file \"%%s\" appears to be damaged or corrupt.\n"
3018 errmsg = errmsg_errno;
3021 case WTAP_ERR_CANT_OPEN:
3023 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3025 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3028 case WTAP_ERR_SHORT_READ:
3029 errmsg = "The file \"%s\" appears to have been cut short"
3030 " in the middle of a packet or other data.";
3033 case WTAP_ERR_SHORT_WRITE:
3034 errmsg = "A full header couldn't be written to the file \"%s\".";
3038 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3039 "The file \"%%s\" could not be %s: %s.",
3040 for_writing ? "created" : "opened",
3041 wtap_strerror(err));
3042 errmsg = errmsg_errno;
3046 errmsg = file_open_error_message(err, for_writing);
3051 * Open/create errors are reported with an console message in TShark.
3054 open_failure_message(const char *filename, int err, gboolean for_writing)
3056 fprintf(stderr, "tshark: ");
3057 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3058 fprintf(stderr, "\n");
3062 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3066 char err_msg[2048+1];
3068 wth = wtap_open_offline(fname, err, &err_info, FALSE);
3072 /* The open succeeded. Fill in the information for this file. */
3074 /* Initialize all data structures used for dissection. */
3078 cf->f_datalen = 0; /* not used, but set it anyway */
3080 /* Set the file name because we need it to set the follow stream filter.
3081 XXX - is that still true? We need it for other reasons, though,
3083 cf->filename = g_strdup(fname);
3085 /* Indicate whether it's a permanent or temporary file. */
3086 cf->is_tempfile = is_tempfile;
3088 /* If it's a temporary capture buffer file, mark it as not saved. */
3089 cf->user_saved = !is_tempfile;
3091 cf->cd_t = wtap_file_type(cf->wth);
3093 cf->drops_known = FALSE;
3095 cf->snap = wtap_snapshot_length(cf->wth);
3096 if (cf->snap == 0) {
3097 /* Snapshot length not known. */
3098 cf->has_snap = FALSE;
3099 cf->snap = WTAP_MAX_PACKET_SIZE;
3101 cf->has_snap = TRUE;
3102 nstime_set_zero(&cf->elapsed_time);
3103 nstime_set_unset(&first_ts);
3104 nstime_set_unset(&prev_dis_ts);
3105 nstime_set_unset(&prev_cap_ts);
3110 g_snprintf(err_msg, sizeof err_msg,
3111 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3112 cmdarg_err("%s", err_msg);
3118 * General errors are reported with an console message in TShark.
3121 failure_message(const char *msg_format, va_list ap)
3123 fprintf(stderr, "tshark: ");
3124 vfprintf(stderr, msg_format, ap);
3125 fprintf(stderr, "\n");
3129 * Read errors are reported with an console message in TShark.
3132 read_failure_message(const char *filename, int err)
3134 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3135 filename, strerror(err));
3139 * Report an error in command-line arguments.
3142 cmdarg_err(const char *fmt, ...)
3147 fprintf(stderr, "tshark: ");
3148 vfprintf(stderr, fmt, ap);
3149 fprintf(stderr, "\n");
3154 * Report additional information for an error in command-line arguments.
3157 cmdarg_err_cont(const char *fmt, ...)
3162 vfprintf(stderr, fmt, ap);
3163 fprintf(stderr, "\n");