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) {
865 proto_initialize_all_prefixes();
868 proto_registrar_dump_fields(1);
870 if (strcmp(argv[2], "fields") == 0)
871 proto_registrar_dump_fields(1);
872 else if (strcmp(argv[2], "fields2") == 0)
873 proto_registrar_dump_fields(2);
874 else if (strcmp(argv[2], "fields3") == 0)
875 proto_registrar_dump_fields(3);
876 else if (strcmp(argv[2], "protocols") == 0)
877 proto_registrar_dump_protocols();
878 else if (strcmp(argv[2], "values") == 0)
879 proto_registrar_dump_values();
880 else if (strcmp(argv[2], "decodes") == 0)
881 dissector_dump_decodes();
882 else if (strcmp(argv[2], "defaultprefs") == 0)
884 else if (strcmp(argv[2], "currentprefs") == 0) {
885 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
886 &pf_open_errno, &pf_read_errno, &pf_path);
889 cmdarg_err("Invalid \"%s\" option for -G flag", argv[2]);
896 /* Set the C-language locale to the native environment. */
897 setlocale(LC_ALL, "");
899 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
900 &pf_open_errno, &pf_read_errno, &pf_path);
901 if (gpf_path != NULL) {
902 if (gpf_open_errno != 0) {
903 cmdarg_err("Can't open global preferences file \"%s\": %s.",
904 pf_path, strerror(gpf_open_errno));
906 if (gpf_read_errno != 0) {
907 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
908 pf_path, strerror(gpf_read_errno));
911 if (pf_path != NULL) {
912 if (pf_open_errno != 0) {
913 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
914 strerror(pf_open_errno));
916 if (pf_read_errno != 0) {
917 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
918 pf_path, strerror(pf_read_errno));
924 /* Set the name resolution code's flags from the preferences. */
925 g_resolv_flags = prefs->name_resolve;
927 /* Read the disabled protocols file. */
928 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
929 &dp_path, &dp_open_errno, &dp_read_errno);
930 if (gdp_path != NULL) {
931 if (gdp_open_errno != 0) {
932 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
933 gdp_path, strerror(gdp_open_errno));
935 if (gdp_read_errno != 0) {
936 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
937 gdp_path, strerror(gdp_read_errno));
941 if (dp_path != NULL) {
942 if (dp_open_errno != 0) {
944 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
945 strerror(dp_open_errno));
947 if (dp_read_errno != 0) {
949 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
950 strerror(dp_read_errno));
955 check_capture_privs();
957 init_cap_file(&cfile);
959 /* Assemble the compile-time version information string */
960 comp_info_str = g_string_new("Compiled ");
961 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
963 /* Assemble the run-time version information string */
964 runtime_info_str = g_string_new("Running ");
965 get_runtime_version_info(runtime_info_str, NULL);
967 /* Print format defaults to this. */
968 print_format = PR_FMT_TEXT;
970 output_fields = output_fields_new();
972 /* Now get our args */
973 while ((opt = getopt(argc, argv, optstring)) != -1) {
975 case 'a': /* autostop criteria */
976 case 'b': /* Ringbuffer option */
977 case 'c': /* Capture x packets */
978 case 'f': /* capture filter */
979 case 'i': /* Use interface x */
980 case 'p': /* Don't capture in promiscuous mode */
981 case 's': /* Set the snapshot (capture) length */
982 case 'w': /* Write to capture file x */
983 case 'y': /* Set the pcap data link type */
985 case 'B': /* Buffer size */
988 status = capture_opts_add_opt(&capture_opts, opt, optarg, &start_capture);
993 capture_option_specified = TRUE;
998 /* Configuration profile settings were already processed just ignore them this time*/
1000 case 'd': /* Decode as rule */
1001 if (!add_decode_as(optarg))
1004 case 'D': /* Print a list of capture devices and exit */
1006 status = capture_opts_list_interfaces(FALSE);
1009 capture_option_specified = TRUE;
1015 output_fields_add(output_fields, optarg);
1019 if(!output_fields_set_option(output_fields, optarg)) {
1020 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1021 output_fields_list_options(stderr);
1026 out_file_type = wtap_short_string_to_file_type(optarg);
1027 if (out_file_type < 0) {
1028 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1029 list_capture_types();
1033 case 'h': /* Print help and exit */
1037 case 'l': /* "Line-buffer" standard output */
1038 /* This isn't line-buffering, strictly speaking, it's just
1039 flushing the standard output after the information for
1040 each packet is printed; however, that should be good
1041 enough for all the purposes to which "-l" is put (and
1042 is probably actually better for "-V", as it does fewer
1045 See the comment in "process_packet()" for an explanation of
1046 why we do that, and why we don't just use "setvbuf()" to
1047 make the standard output line-buffered (short version: in
1048 Windows, "line-buffered" is the same as "fully-buffered",
1049 and the output buffer is only flushed when it fills up). */
1050 line_buffered = TRUE;
1052 case 'L': /* Print list of link-layer types and exit */
1054 list_link_layer_types = TRUE;
1056 capture_option_specified = TRUE;
1060 case 'n': /* No name resolution */
1061 g_resolv_flags = RESOLV_NONE;
1063 case 'N': /* Select what types of addresses/port #s to resolve */
1064 if (g_resolv_flags == RESOLV_ALL)
1065 g_resolv_flags = RESOLV_NONE;
1066 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
1067 if (badopt != '\0') {
1068 cmdarg_err("-N specifies unknown resolving option '%c';",
1070 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1074 case 'o': /* Override preference from command line */
1075 switch (prefs_set_pref(optarg)) {
1080 case PREFS_SET_SYNTAX_ERR:
1081 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1085 case PREFS_SET_NO_SUCH_PREF:
1086 case PREFS_SET_OBSOLETE:
1087 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1092 case 'q': /* Quiet */
1095 case 'r': /* Read capture file x */
1096 cf_name = g_strdup(optarg);
1098 case 'R': /* Read file filter */
1101 case 'S': /* show packets in real time */
1102 print_packet_info = TRUE;
1104 case 't': /* Time stamp type */
1105 if (strcmp(optarg, "r") == 0)
1106 timestamp_set_type(TS_RELATIVE);
1107 else if (strcmp(optarg, "a") == 0)
1108 timestamp_set_type(TS_ABSOLUTE);
1109 else if (strcmp(optarg, "ad") == 0)
1110 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1111 else if (strcmp(optarg, "d") == 0)
1112 timestamp_set_type(TS_DELTA);
1113 else if (strcmp(optarg, "dd") == 0)
1114 timestamp_set_type(TS_DELTA_DIS);
1115 else if (strcmp(optarg, "e") == 0)
1116 timestamp_set_type(TS_EPOCH);
1118 cmdarg_err("Invalid time stamp type \"%s\"",
1120 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1121 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1125 case 'T': /* printing Type */
1126 if (strcmp(optarg, "text") == 0) {
1127 output_action = WRITE_TEXT;
1128 print_format = PR_FMT_TEXT;
1129 } else if (strcmp(optarg, "ps") == 0) {
1130 output_action = WRITE_TEXT;
1131 print_format = PR_FMT_PS;
1132 } else if (strcmp(optarg, "pdml") == 0) {
1133 output_action = WRITE_XML;
1135 } else if (strcmp(optarg, "psml") == 0) {
1136 output_action = WRITE_XML;
1138 } else if(strcmp(optarg, "fields") == 0) {
1139 output_action = WRITE_FIELDS;
1140 verbose = TRUE; /* Need full tree info */
1142 cmdarg_err("Invalid -T parameter.");
1143 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1147 case 'v': /* Show version and exit */
1148 printf("TShark " VERSION "%s\n"
1155 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
1156 runtime_info_str->str);
1159 case 'V': /* Verbose */
1162 case 'x': /* Print packet data in hex (and ASCII) */
1168 /* We won't call the init function for the stat this soon
1169 as it would disallow MATE's fields (which are registered
1170 by the preferences set callback) from being used as
1171 part of a tap filter. Instead, we just add the argument
1172 to a list of stat arguments. */
1173 if (!process_stat_cmd_arg(optarg)) {
1174 cmdarg_err("invalid -z argument.");
1175 cmdarg_err_cont(" -z argument must be one of :");
1176 list_stat_cmd_args();
1181 case '?': /* Bad flag - print usage message */
1184 list_capture_types();
1194 /* If we specified output fields, but not the output field type... */
1195 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1196 cmdarg_err("Output fields were specified with \"-e\", "
1197 "but \"-Tfields\" was not specified.");
1199 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1200 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1201 "specified with \"-e\".");
1206 /* If no capture filter or read filter has been specified, and there are
1207 still command-line arguments, treat them as the tokens of a capture
1208 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1209 flag was specified. */
1210 if (optind < argc) {
1211 if (cf_name != NULL) {
1212 if (rfilter != NULL) {
1213 cmdarg_err("Read filters were specified both with \"-R\" "
1214 "and with additional command-line arguments");
1217 rfilter = get_args_as_string(argc, argv, optind);
1220 if (capture_opts.has_cfilter) {
1221 cmdarg_err("Capture filters were specified both with \"-f\""
1222 " and with additional command-line arguments");
1225 capture_opts.has_cfilter = TRUE;
1226 capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1228 capture_option_specified = TRUE;
1234 if (!capture_opts.saving_to_file) {
1235 /* We're not saving the capture to a file; if "-q" wasn't specified,
1236 we should print packet information */
1238 print_packet_info = TRUE;
1240 /* We're saving to a file; if we're writing to the standard output.
1241 and we'll also be writing dissected packets to the standard
1242 output, reject the request. At best, we could redirect that
1243 to the standard error; we *can't* write both to the standard
1244 output and have either of them be useful. */
1245 if (strcmp(capture_opts.save_file, "-") == 0 && print_packet_info) {
1246 cmdarg_err("You can't write both raw packet data and dissected packets"
1247 " to the standard output.");
1252 /* We're not saving the capture to a file; if "-q" wasn't specified,
1253 we should print packet information */
1255 print_packet_info = TRUE;
1258 #ifndef HAVE_LIBPCAP
1259 if (capture_option_specified)
1260 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1267 /* We don't support capture filters when reading from a capture file
1268 (the BPF compiler doesn't support all link-layer types that we
1269 support in capture files we read). */
1271 if (cf_name != NULL) {
1272 if (capture_opts.has_cfilter) {
1273 cmdarg_err("Only read filters, not capture filters, "
1274 "can be specified when reading a capture file.");
1281 if (output_action != WRITE_TEXT) {
1282 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1288 if (list_link_layer_types) {
1289 /* We're supposed to list the link-layer types for an interface;
1290 did the user also specify a capture file to be read? */
1292 /* Yes - that's bogus. */
1293 cmdarg_err("You can't specify -L and a capture file to be read.");
1296 /* No - did they specify a ring buffer option? */
1297 if (capture_opts.multi_files_on) {
1298 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1304 * "-r" was specified, so we're reading a capture file.
1305 * Capture options don't apply here.
1307 if (capture_opts.multi_files_on) {
1308 cmdarg_err("Multiple capture files requested, but "
1309 "a capture isn't being done.");
1312 if (capture_opts.has_file_duration) {
1313 cmdarg_err("Switching capture files after a time interval was specified, but "
1314 "a capture isn't being done.");
1317 if (capture_opts.has_ring_num_files) {
1318 cmdarg_err("A ring buffer of capture files was specified, but "
1319 "a capture isn't being done.");
1322 if (capture_opts.has_autostop_files) {
1323 cmdarg_err("A maximum number of capture files was specified, but "
1324 "a capture isn't being done.");
1328 /* Note: TShark now allows the restriction of a _read_ file by packet count
1329 * and byte count as well as a write file. Other autostop options remain valid
1330 * only for a write file.
1332 if (capture_opts.has_autostop_duration) {
1333 cmdarg_err("A maximum capture time was specified, but "
1334 "a capture isn't being done.");
1339 * "-r" wasn't specified, so we're doing a live capture.
1341 if (capture_opts.saving_to_file) {
1342 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1344 /* When capturing, we only support writing libpcap format. */
1345 if (out_file_type != WTAP_FILE_PCAP) {
1346 cmdarg_err("Live captures can only be saved in libpcap format.");
1349 if (capture_opts.multi_files_on) {
1350 /* Multiple-file mode doesn't work under certain conditions:
1351 a) it doesn't work if you're writing to the standard output;
1352 b) it doesn't work if you're writing to a pipe;
1354 if (strcmp(capture_opts.save_file, "-") == 0) {
1355 cmdarg_err("Multiple capture files requested, but "
1356 "the capture is being written to the standard output.");
1359 if (capture_opts.output_to_pipe) {
1360 cmdarg_err("Multiple capture files requested, but "
1361 "the capture file is a pipe.");
1364 if (!capture_opts.has_autostop_filesize &&
1365 !capture_opts.has_file_duration) {
1366 cmdarg_err("Multiple capture files requested, but "
1367 "no maximum capture file size or duration was specified.");
1372 /* They didn't specify a "-w" flag, so we won't be saving to a
1373 capture file. Check for options that only make sense if
1374 we're saving to a file. */
1375 if (capture_opts.has_autostop_filesize) {
1376 cmdarg_err("Maximum capture file size specified, but "
1377 "capture isn't being saved to a file.");
1380 if (capture_opts.multi_files_on) {
1381 cmdarg_err("Multiple capture files requested, but "
1382 "the capture isn't being saved to a file.");
1391 /* Start windows sockets */
1392 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1395 /* Notify all registered modules that have had any of their preferences
1396 changed either from one of the preferences file or from the command
1397 line that their preferences have changed. */
1400 /* At this point MATE will have registered its field array so we can
1401 have a tap filter with one of MATE's late-registered fields as part
1402 of the filter. We can now process all the "-z" arguments. */
1403 start_requested_stats();
1405 /* disabled protocols as per configuration file */
1406 if (gdp_path == NULL && dp_path == NULL) {
1407 set_disabled_protos_list();
1410 /* Build the column format array */
1411 col_setup(&cfile.cinfo, prefs->num_cols);
1412 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1413 cfile.cinfo.col_fmt[i] = get_column_format(i);
1414 cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
1415 if (cfile.cinfo.col_fmt[i] == COL_CUSTOM) {
1416 cfile.cinfo.col_custom_field[i] = g_strdup(get_column_custom_field(i));
1418 cfile.cinfo.col_custom_field[i] = NULL;
1420 cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
1422 get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
1423 cfile.cinfo.col_data[i] = NULL;
1424 if (cfile.cinfo.col_fmt[i] == COL_INFO)
1425 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
1427 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1428 cfile.cinfo.col_fence[i] = 0;
1429 cfile.cinfo.col_expr.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1430 cfile.cinfo.col_expr.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1433 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1436 for (j = 0; j < NUM_COL_FMTS; j++) {
1437 if (!cfile.cinfo.fmt_matx[i][j])
1440 if (cfile.cinfo.col_first[j] == -1)
1441 cfile.cinfo.col_first[j] = i;
1442 cfile.cinfo.col_last[j] = i;
1447 capture_opts_trim_snaplen(&capture_opts, MIN_PACKET_SIZE);
1448 capture_opts_trim_ring_num_files(&capture_opts);
1451 if (rfilter != NULL) {
1452 if (!dfilter_compile(rfilter, &rfcode)) {
1453 cmdarg_err("%s", dfilter_error_msg);
1455 #ifdef HAVE_PCAP_OPEN_DEAD
1459 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1461 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1463 " Note: That display filter code looks like a valid capture filter;");
1465 " maybe you mixed them up?");
1474 cfile.rfcode = rfcode;
1476 if (print_packet_info) {
1477 /* If we're printing as text or PostScript, we have
1478 to create a print stream. */
1479 if (output_action == WRITE_TEXT) {
1480 switch (print_format) {
1483 print_stream = print_stream_text_stdio_new(stdout);
1487 print_stream = print_stream_ps_stdio_new(stdout);
1491 g_assert_not_reached();
1496 /* We have to dissect each packet if:
1498 we're printing information about each packet;
1500 we're using a read filter on the packets;
1502 we're using any taps. */
1503 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1507 * We're reading a capture file.
1511 * Immediately relinquish any special privileges we have; we must not
1512 * be allowed to read any capture files the user running TShark
1515 relinquish_special_privs_perm();
1516 print_current_user();
1518 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1523 /* Set timestamp precision; there should arguably be a command-line
1524 option to let the user set this. */
1525 switch(wtap_file_tsprecision(cfile.wth)) {
1526 case(WTAP_FILE_TSPREC_SEC):
1527 timestamp_set_precision(TS_PREC_AUTO_SEC);
1529 case(WTAP_FILE_TSPREC_DSEC):
1530 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1532 case(WTAP_FILE_TSPREC_CSEC):
1533 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1535 case(WTAP_FILE_TSPREC_MSEC):
1536 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1538 case(WTAP_FILE_TSPREC_USEC):
1539 timestamp_set_precision(TS_PREC_AUTO_USEC);
1541 case(WTAP_FILE_TSPREC_NSEC):
1542 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1545 g_assert_not_reached();
1548 /* Process the packets in the file */
1550 err = load_cap_file(&cfile, capture_opts.save_file, out_file_type,
1551 capture_opts.has_autostop_packets ? capture_opts.autostop_packets : 0,
1552 capture_opts.has_autostop_filesize ? capture_opts.autostop_filesize : 0);
1554 err = load_cap_file(&cfile, NULL, out_file_type, 0, 0);
1562 /* No capture file specified, so we're supposed to do a live capture
1563 (or get a list of link-layer types for a live capture device);
1564 do we have support for live captures? */
1571 cmdarg_err("WinPcap couldn't be found.");
1572 detailed_err = cant_load_winpcap_err("TShark");
1573 cmdarg_err_cont("%s", detailed_err);
1574 g_free(detailed_err);
1579 /* trim the interface name and exit if that failed */
1580 if (!capture_opts_trim_iface(&capture_opts,
1581 (prefs->capture_device) ? get_if_name(prefs->capture_device) : NULL)) {
1585 /* if requested, list the link layer types and exit */
1586 if (list_link_layer_types) {
1587 status = capture_opts_list_link_layer_types(&capture_opts, FALSE);
1591 if (print_packet_info) {
1592 if (!write_preamble(NULL)) {
1594 show_print_file_io_error(err);
1597 } else if (!quiet) {
1599 * We're not printing information for each packet, and the user
1600 * didn't ask us not to print a count of packets as they arrive,
1601 * so print that count so the user knows that packets are arriving.
1603 * XXX - what if the user wants to do a live capture, doesn't want
1604 * to save it to a file, doesn't want information printed for each
1605 * packet, does want some "-z" statistic, and wants packet counts
1606 * so they know whether they're seeing any packets?
1608 print_packet_counts = TRUE;
1611 /* For now, assume libpcap gives microsecond precision. */
1612 timestamp_set_precision(TS_PREC_AUTO_USEC);
1616 if (print_packet_info) {
1617 if (!write_finale()) {
1619 show_print_file_io_error(err);
1623 /* No - complain. */
1624 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1629 draw_tap_listeners(TRUE);
1630 funnel_dump_all_text_windows();
1633 output_fields_free(output_fields);
1634 output_fields = NULL;
1639 /*#define USE_BROKEN_G_MAIN_LOOP*/
1641 #ifdef USE_BROKEN_G_MAIN_LOOP
1644 gboolean loop_running = FALSE;
1646 guint32 packet_count = 0;
1649 /* XXX - move to the right position / file */
1650 /* read from a pipe (callback) */
1651 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1653 typedef struct pipe_input_tag {
1657 pipe_input_cb_t input_cb;
1658 guint pipe_input_id;
1660 GStaticMutex callback_running;
1664 static pipe_input_t pipe_input;
1667 /* The timer has expired, see if there's stuff to read from the pipe,
1668 if so, do the callback */
1670 pipe_timer_cb(gpointer data)
1674 gboolean result, result1;
1676 pipe_input_t *pipe_input = data;
1677 gint iterations = 0;
1680 g_static_mutex_lock (&pipe_input->callback_running);
1682 /* try to read data from the pipe only 5 times, to avoid blocking */
1683 while(iterations < 5) {
1684 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1686 /* Oddly enough although Named pipes don't work on win9x,
1687 PeekNamedPipe does !!! */
1688 handle = (HANDLE) _get_osfhandle (pipe_input->source);
1689 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1691 /* Get the child process exit status */
1692 result1 = GetExitCodeProcess((HANDLE)*(pipe_input->child_process),
1695 /* If the Peek returned an error, or there are bytes to be read
1696 or the childwatcher thread has terminated then call the normal
1698 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1700 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1702 /* And call the real handler */
1703 if (!pipe_input->input_cb(pipe_input->source, pipe_input->user_data)) {
1704 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1705 /* pipe closed, return false so that the timer is stopped */
1706 g_static_mutex_unlock (&pipe_input->callback_running);
1711 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1712 /* No data, stop now */
1719 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1721 g_static_mutex_unlock (&pipe_input->callback_running);
1723 /* we didn't stopped the timer, so let it run */
1730 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1733 pipe_input.source = source;
1734 pipe_input.child_process = child_process;
1735 pipe_input.user_data = user_data;
1736 pipe_input.input_cb = input_cb;
1739 g_static_mutex_init(&pipe_input.callback_running);
1740 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1741 do this but that doesn't cover all win32 platforms. GTK can do
1742 this but doesn't seem to work over processes. Attempt to do
1743 something similar here, start a timer and check for data on every
1745 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1746 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1756 #ifdef USE_TSHARK_SELECT
1760 struct sigaction action, oldaction;
1764 * XXX - dropping privileges is still required, until code cleanup is done
1766 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1767 * when it's done, we don't need special privileges to run tshark at all,
1768 * therefore we don't need to drop these privileges
1769 * The only thing we might want to keep is a warning if tshark is run as root,
1770 * as it's no longer necessary and potentially dangerous.
1772 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1773 * We've opened the capture device, so we shouldn't need any special
1774 * privileges any more; relinquish those privileges.
1776 * XXX - if we have saved set-user-ID support, we should give up those
1777 * privileges immediately, and then reclaim them long enough to get
1778 * a list of network interfaces and to open one, and then give them
1779 * up again, so that stuff we do while processing the argument list,
1780 * reading the user's preferences, loading and starting plugins
1781 * (especially *user* plugins), etc. is done with the user's privileges,
1782 * not special privileges.
1784 relinquish_special_privs_perm();
1785 print_current_user();
1787 /* Initialize all data structures used for dissection. */
1791 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
1792 SetConsoleCtrlHandler(capture_cleanup, TRUE);
1794 /* Catch SIGINT and SIGTERM and, if we get either of them, clean up
1796 action.sa_handler = capture_cleanup;
1797 action.sa_flags = 0;
1798 sigemptyset(&action.sa_mask);
1799 sigaction(SIGTERM, &action, NULL);
1800 sigaction(SIGINT, &action, NULL);
1801 sigaction(SIGHUP, NULL, &oldaction);
1802 if (oldaction.sa_handler == SIG_DFL)
1803 sigaction(SIGHUP, &action, NULL);
1806 /* Catch SIGINFO and, if we get it and we're capturing to a file in
1807 quiet mode, report the number of packets we've captured. */
1808 action.sa_handler = report_counts_siginfo;
1809 action.sa_flags = 0;
1810 sigemptyset(&action.sa_mask);
1811 sigaction(SIGINFO, &action, NULL);
1812 #endif /* SIGINFO */
1815 capture_opts.state = CAPTURE_PREPARING;
1817 /* Let the user know what interface was chosen. */
1818 capture_opts.iface_descr = get_interface_descriptive_name(capture_opts.iface);
1819 fprintf(stderr, "Capturing on %s\n", capture_opts.iface_descr);
1821 ret = sync_pipe_start(&capture_opts);
1826 /* the actual capture loop
1828 * XXX - glib doesn't seem to provide any event based loop handling.
1830 * XXX - for whatever reason,
1831 * calling g_main_loop_new() ends up in 100% cpu load.
1833 * But that doesn't matter: in UNIX we can use select() to find an input
1834 * source with something to do.
1836 * But that doesn't matter because we're in a CLI (that doesn't need to
1837 * update a GUI or something at the same time) so it's OK if we block
1838 * trying to read from the pipe.
1840 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
1841 * wrong (but I leave it there in case I am...).
1844 #ifdef USE_TSHARK_SELECT
1846 FD_SET(pipe_input.source, &readfds);
1849 loop_running = TRUE;
1851 while (loop_running)
1853 #ifdef USE_TSHARK_SELECT
1854 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
1860 } else if (ret == 1) {
1862 /* Call the real handler */
1863 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
1864 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
1867 #ifdef USE_TSHARK_SELECT
1876 /* XXX - move the call to main_window_update() out of capture_sync.c */
1877 /* dummy for capture_sync.c to make linker happy */
1878 void main_window_update(void)
1882 /* capture child detected an error */
1884 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
1886 cmdarg_err("%s", error_msg);
1887 cmdarg_err_cont("%s", secondary_error_msg);
1891 /* capture child detected an capture filter related error */
1893 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
1895 dfilter_t *rfcode = NULL;
1898 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
1900 "Invalid capture filter: \"%s\"!\n"
1902 "That string looks like a valid display filter; however, it isn't a valid\n"
1903 "capture filter (%s).\n"
1905 "Note that display filters and capture filters don't have the same syntax,\n"
1906 "so you can't use most display filter expressions as capture filters.\n"
1908 "See the User's Guide for a description of the capture filter syntax.",
1909 capture_opts->cfilter, error_message);
1910 dfilter_free(rfcode);
1913 "Invalid capture filter: \"%s\"!\n"
1915 "That string isn't a valid capture filter (%s).\n"
1916 "See the User's Guide for a description of the capture filter syntax.",
1917 capture_opts->cfilter, error_message);
1922 /* capture child tells us we have a new (or the first) capture file */
1924 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
1926 gboolean is_tempfile;
1930 if(capture_opts->state == CAPTURE_PREPARING) {
1931 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
1933 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
1935 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
1937 capture_opts->cf = &cfile;
1939 /* free the old filename */
1940 if(capture_opts->save_file != NULL) {
1941 /* we start a new capture file, close the old one (if we had one before) */
1942 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
1943 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
1944 wtap_close(((capture_file *) capture_opts->cf)->wth);
1947 g_free(capture_opts->save_file);
1948 is_tempfile = FALSE;
1950 /* we didn't had a save_file before, must be a tempfile */
1954 /* save the new filename */
1955 capture_opts->save_file = g_strdup(new_file);
1957 /* if we are in real-time mode, open the new file now */
1959 /* Attempt to open the capture file and set up to read from it. */
1960 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
1964 /* Don't unlink (delete) the save file - leave it around,
1965 for debugging purposes. */
1966 g_free(capture_opts->save_file);
1967 capture_opts->save_file = NULL;
1972 capture_opts->state = CAPTURE_RUNNING;
1978 /* capture child tells us we have new packets to read */
1980 capture_input_new_packets(capture_options *capture_opts, int to_read)
1986 capture_file *cf = capture_opts->cf;
1991 * Prevent a SIGINFO handler from writing to stdout while we're
1992 * doing so; instead, have it just set a flag telling us to print
1993 * that information when we're done.
1996 #endif /* SIGINFO */
1999 while (to_read-- && cf->wth) {
2000 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2002 /* read from file failed, tell the capture child to stop */
2003 sync_pipe_stop(capture_opts);
2004 wtap_close(cf->wth);
2007 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2008 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth));
2011 /* packet sucessfully read and gone through the "Read Filter" */
2017 * Dumpcap's doing all the work; we're not doing any dissection.
2018 * Count all the packets it wrote.
2020 packet_count += to_read;
2023 if (print_packet_counts) {
2024 /* We're printing packet counts. */
2025 if (packet_count != 0) {
2026 fprintf(stderr, "\r%u ", packet_count);
2027 /* stderr could be line buffered */
2034 * Allow SIGINFO handlers to write.
2039 * If a SIGINFO handler asked us to write out capture counts, do so.
2043 #endif /* SIGINFO */
2049 if (!print_packet_counts) {
2050 /* Report the count only if we aren't printing a packet count
2051 as packets arrive. */
2052 fprintf(stderr, "%u packet%s captured\n", packet_count,
2053 plurality(packet_count, "", "s"));
2056 infoprint = FALSE; /* we just reported it */
2057 #endif /* SIGINFO */
2062 report_counts_siginfo(int signum _U_)
2064 int sav_errno = errno;
2065 /* If we've been told to delay printing, just set a flag asking
2066 that we print counts (if we're supposed to), otherwise print
2067 the count of packets captured (if we're supposed to). */
2074 #endif /* SIGINFO */
2077 /* capture child detected any packet drops? */
2079 capture_input_drops(capture_options *capture_opts _U_, int dropped)
2081 if (print_packet_counts) {
2082 /* We're printing packet counts to stderr.
2083 Send a newline so that we move to the line after the packet count. */
2084 fprintf(stderr, "\n");
2088 /* We're printing packet counts to stderr.
2089 Send a newline so that we move to the line after the packet count. */
2090 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2095 /* capture child closed its side of the pipe, do the required cleanup */
2097 capture_input_closed(capture_options *capture_opts)
2101 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2102 wtap_close(((capture_file *) capture_opts->cf)->wth);
2104 #ifdef USE_BROKEN_G_MAIN_LOOP
2105 /*g_main_loop_quit(loop);*/
2108 loop_running = FALSE;
2117 capture_cleanup(DWORD ctrltype _U_)
2119 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2120 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2121 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2122 like SIGTERM at least when the machine's shutting down.
2124 For now, we handle them all as indications that we should clean up
2125 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2128 However, as handlers run in a new thread, we can't just longjmp
2129 out; we have to set "ld.go" to FALSE, and must return TRUE so that
2130 no other handler - such as one that would terminate the process -
2133 XXX - for some reason, typing ^C to TShark, if you run this in
2134 a Cygwin console window in at least some versions of Cygwin,
2135 causes TShark to terminate immediately; this routine gets
2136 called, but the main loop doesn't get a chance to run and
2137 exit cleanly, at least if this is compiled with Microsoft Visual
2138 C++ (i.e., it's a property of the Cygwin console window or Bash;
2139 it happens if TShark is not built with Cygwin - for all I know,
2140 building it with Cygwin may make the problem go away). */
2142 /* tell the capture child to stop */
2143 sync_pipe_stop(&capture_opts);
2145 /* don't stop our own loop already here, otherwise status messages and
2146 * cleanup wouldn't be done properly. The child will indicate the stop of
2147 * everything by calling capture_input_closed() later */
2153 capture_cleanup(int signum _U_)
2155 /* tell the capture child to stop */
2156 sync_pipe_stop(&capture_opts);
2159 #endif /* HAVE_LIBPCAP */
2162 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2163 int max_packet_count, gint64 max_byte_count)
2166 int snapshot_length;
2171 char *save_file_string = NULL;
2173 linktype = wtap_file_encap(cf->wth);
2174 if (save_file != NULL) {
2175 /* Get a string that describes what we're writing to */
2176 save_file_string = output_file_description(save_file);
2178 /* Set up to write to the capture file. */
2179 snapshot_length = wtap_snapshot_length(cf->wth);
2180 if (snapshot_length == 0) {
2181 /* Snapshot length of input file not known. */
2182 snapshot_length = WTAP_MAX_PACKET_SIZE;
2184 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2185 FALSE /* compressed */, &err);
2188 /* We couldn't set up to write to the capture file. */
2191 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2192 cmdarg_err("Capture files can't be written in that format.");
2195 case WTAP_ERR_UNSUPPORTED_ENCAP:
2196 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2197 cmdarg_err("The capture file being read can't be written in "
2201 case WTAP_ERR_CANT_OPEN:
2202 cmdarg_err("The %s couldn't be created for some "
2203 "unknown reason.", save_file_string);
2206 case WTAP_ERR_SHORT_WRITE:
2207 cmdarg_err("A full header couldn't be written to the %s.",
2212 cmdarg_err("The %s could not be created: %s.", save_file_string,
2213 wtap_strerror(err));
2219 if (print_packet_info) {
2220 if (!write_preamble(cf)) {
2222 show_print_file_io_error(err);
2228 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2229 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2230 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2231 /* Either there's no read filtering or this packet passed the
2232 filter, so, if we're writing to a capture file, write
2235 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2236 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2238 /* Error writing to a capture file */
2239 show_capture_file_io_error(save_file, err, FALSE);
2240 wtap_dump_close(pdh, &err);
2244 /* Stop reading if we have the maximum number of packets;
2245 * When the -c option has not been used, max_packet_count
2246 * starts at 0, which practically means, never stop reading.
2247 * (unless we roll over max_packet_count ?)
2249 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2250 err = 0; /* This is not an error */
2256 /* Print a message noting that the read failed somewhere along the line. */
2259 case WTAP_ERR_UNSUPPORTED_ENCAP:
2260 cmdarg_err("\"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2261 cf->filename, err_info);
2264 case WTAP_ERR_CANT_READ:
2265 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
2269 case WTAP_ERR_SHORT_READ:
2270 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
2274 case WTAP_ERR_BAD_RECORD:
2275 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
2276 cf->filename, err_info);
2280 cmdarg_err("An error occurred while reading \"%s\": %s.",
2281 cf->filename, wtap_strerror(err));
2284 if (save_file != NULL) {
2285 /* Now close the capture file. */
2286 if (!wtap_dump_close(pdh, &err))
2287 show_capture_file_io_error(save_file, err, TRUE);
2290 if (save_file != NULL) {
2291 /* Now close the capture file. */
2292 if (!wtap_dump_close(pdh, &err))
2293 show_capture_file_io_error(save_file, err, TRUE);
2295 if (print_packet_info) {
2296 if (!write_finale()) {
2298 show_print_file_io_error(err);
2305 wtap_close(cf->wth);
2308 if (save_file_string != NULL)
2309 g_free(save_file_string);
2315 fill_in_fdata(frame_data *fdata, capture_file *cf,
2316 const struct wtap_pkthdr *phdr, gint64 offset)
2321 fdata->num = cf->count;
2322 fdata->pkt_len = phdr->len;
2323 cum_bytes += phdr->len;
2324 fdata->cum_bytes = cum_bytes;
2325 fdata->cap_len = phdr->caplen;
2326 fdata->file_off = offset;
2327 fdata->lnk_t = phdr->pkt_encap;
2328 fdata->abs_ts.secs = phdr->ts.secs;
2329 fdata->abs_ts.nsecs = phdr->ts.nsecs;
2330 fdata->flags.passed_dfilter = 0;
2331 fdata->flags.encoding = CHAR_ASCII;
2332 fdata->flags.visited = 0;
2333 fdata->flags.marked = 0;
2334 fdata->flags.ref_time = 0;
2335 fdata->color_filter = NULL;
2337 /* If we don't have the time stamp of the first packet in the
2338 capture, it's because this is the first packet. Save the time
2339 stamp of this packet as the time stamp of the first packet. */
2340 if (nstime_is_unset(&first_ts)) {
2341 first_ts = fdata->abs_ts;
2344 /* If we don't have the time stamp of the previous captured packet,
2345 it's because this is the first packet. Save the time
2346 stamp of this packet as the time stamp of the previous captured
2348 if (nstime_is_unset(&prev_cap_ts)) {
2349 prev_cap_ts = fdata->abs_ts;
2352 /* Get the time elapsed between the first packet and this packet. */
2353 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2355 /* If it's greater than the current elapsed time, set the elapsed time
2356 to it (we check for "greater than" so as not to be confused by
2357 time moving backwards). */
2358 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2359 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2360 cf->elapsed_time = fdata->rel_ts;
2363 /* If we don't have the time stamp of the previous displayed packet,
2364 it's because this is the first packet that's being displayed. Save the time
2365 stamp of this packet as the time stamp of the previous displayed
2367 if (nstime_is_unset(&prev_dis_ts))
2368 prev_dis_ts = fdata->abs_ts;
2370 /* Get the time elapsed between the previous displayed packet and
2372 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
2374 /* Get the time elapsed between the previous captured packet and
2376 nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
2377 prev_cap_ts = fdata->abs_ts;
2380 /* Free up all data attached to a "frame_data" structure. */
2382 clear_fdata(frame_data *fdata)
2385 g_slist_free(fdata->pfd);
2389 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2390 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2393 gboolean create_proto_tree;
2394 epan_dissect_t *edt;
2397 /* Count this packet. */
2400 /* If we're going to print packet information, or we're going to
2401 run a read filter, or we're going to process taps, set up to
2402 do a dissection and do so. */
2403 if (do_dissection) {
2404 fill_in_fdata(&fdata, cf, whdr, offset);
2406 if (print_packet_info) {
2407 /* Grab any resolved addresses */
2409 if (g_resolv_flags) {
2410 host_name_lookup_process(NULL);
2415 if (cf->rfcode || verbose || num_tap_filters!=0 || have_custom_cols(&cf->cinfo))
2416 create_proto_tree = TRUE;
2418 create_proto_tree = FALSE;
2419 /* The protocol tree will be "visible", i.e., printed, only if we're
2420 printing packet details, which is true if we're printing stuff
2421 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2423 edt = epan_dissect_new(create_proto_tree, print_packet_info && verbose);
2425 /* If we're running a read filter, prime the epan_dissect_t with that
2428 epan_dissect_prime_dfilter(edt, cf->rfcode);
2430 col_custom_prime_edt(edt, &cf->cinfo);
2432 tap_queue_init(edt);
2434 /* We only need the columns if we're printing packet info but we're
2435 *not* verbose; in verbose mode, we print the protocol tree, not
2436 the protocol summary. */
2437 epan_dissect_run(edt, pseudo_header, pd, &fdata,
2438 (print_packet_info && !verbose) ? &cf->cinfo : NULL);
2440 tap_push_tapped_queue(edt);
2442 /* Run the read filter if we have one. */
2444 passed = dfilter_apply_edt(cf->rfcode, edt);
2448 /* We're not running a display filter and we're not printing any
2449 packet information, so we don't need to do a dissection, and all
2450 packets are processed. */
2456 /* Keep the time of the current packet if the packet passed
2457 the read filter so that the delta time since last displayed
2458 packet can be calculated */
2459 prev_dis_ts = fdata.abs_ts;
2461 /* Process this packet. */
2462 if (print_packet_info) {
2463 /* We're printing packet information; print the information for
2465 print_packet(cf, edt);
2467 /* The ANSI C standard does not appear to *require* that a line-buffered
2468 stream be flushed to the host environment whenever a newline is
2469 written, it just says that, on such a stream, characters "are
2470 intended to be transmitted to or from the host environment as a
2471 block when a new-line character is encountered".
2473 The Visual C++ 6.0 C implementation doesn't do what is intended;
2474 even if you set a stream to be line-buffered, it still doesn't
2475 flush the buffer at the end of every line.
2477 So, if the "-l" flag was specified, we flush the standard output
2478 at the end of a packet. This will do the right thing if we're
2479 printing packet summary lines, and, as we print the entire protocol
2480 tree for a single packet without waiting for anything to happen,
2481 it should be as good as line-buffered mode if we're printing
2482 protocol trees. (The whole reason for the "-l" flag in either
2483 tcpdump or TShark is to allow the output of a live capture to
2484 be piped to a program or script and to have that script see the
2485 information for the packet as soon as it's printed, rather than
2486 having to wait until a standard I/O buffer fills up. */
2490 if (ferror(stdout)) {
2491 show_print_file_io_error(errno);
2497 if (do_dissection) {
2498 epan_dissect_free(edt);
2499 clear_fdata(&fdata);
2505 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
2507 char *save_file_string;
2509 save_file_string = output_file_description(fname);
2514 cmdarg_err("Not all the packets could be written to the %s because there is "
2515 "no space left on the file system.",
2521 cmdarg_err("Not all the packets could be written to the %s because you are "
2522 "too close to, or over your disk quota.",
2527 case WTAP_ERR_CANT_CLOSE:
2528 cmdarg_err("The %s couldn't be closed for some unknown reason.",
2532 case WTAP_ERR_SHORT_WRITE:
2533 cmdarg_err("Not all the packets could be written to the %s.",
2539 cmdarg_err("The %s could not be closed: %s.", save_file_string,
2540 wtap_strerror(err));
2542 cmdarg_err("An error occurred while writing to the %s: %s.",
2543 save_file_string, wtap_strerror(err));
2547 g_free(save_file_string);
2551 write_preamble(capture_file *cf)
2553 switch (output_action) {
2556 return print_preamble(print_stream, cf ? cf->filename : NULL);
2560 write_pdml_preamble(stdout);
2562 write_psml_preamble(stdout);
2563 return !ferror(stdout);
2566 write_fields_preamble(output_fields, stdout);
2567 return !ferror(stdout);
2570 g_assert_not_reached();
2576 get_line_buf(size_t len)
2578 static char *line_bufp = NULL;
2579 static size_t line_buf_len = 256;
2580 size_t new_line_buf_len;
2582 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
2583 new_line_buf_len *= 2)
2585 if (line_bufp == NULL) {
2586 line_buf_len = new_line_buf_len;
2587 line_bufp = g_malloc(line_buf_len + 1);
2589 if (new_line_buf_len > line_buf_len) {
2590 line_buf_len = new_line_buf_len;
2591 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
2598 print_columns(capture_file *cf)
2605 line_bufp = get_line_buf(256);
2608 for (i = 0; i < cf->cinfo.num_cols; i++) {
2609 switch (cf->cinfo.col_fmt[i]) {
2613 * Don't print this if we're doing a live capture from a network
2614 * interface - if we're doing a live capture, you won't be
2615 * able to look at the capture in the future (it's not being
2616 * saved anywhere), so the frame numbers are unlikely to be
2619 * (XXX - it might be nice to be able to save and print at
2620 * the same time, sort of like an "Update list of packets
2621 * in real time" capture in Wireshark.)
2623 if (capture_opts.iface != NULL)
2626 column_len = strlen(cf->cinfo.col_data[i]);
2629 line_bufp = get_line_buf(buf_offset + column_len);
2630 sprintf(line_bufp + buf_offset, "%3s", cf->cinfo.col_data[i]);
2636 case COL_ABS_DATE_TIME: /* XXX - wider */
2637 column_len = strlen(cf->cinfo.col_data[i]);
2638 if (column_len < 10)
2640 line_bufp = get_line_buf(buf_offset + column_len);
2641 sprintf(line_bufp + buf_offset, "%10s", cf->cinfo.col_data[i]);
2647 case COL_DEF_DL_SRC:
2648 case COL_RES_DL_SRC:
2649 case COL_UNRES_DL_SRC:
2650 case COL_DEF_NET_SRC:
2651 case COL_RES_NET_SRC:
2652 case COL_UNRES_NET_SRC:
2653 column_len = strlen(cf->cinfo.col_data[i]);
2654 if (column_len < 12)
2656 line_bufp = get_line_buf(buf_offset + column_len);
2657 sprintf(line_bufp + buf_offset, "%12s", cf->cinfo.col_data[i]);
2663 case COL_DEF_DL_DST:
2664 case COL_RES_DL_DST:
2665 case COL_UNRES_DL_DST:
2666 case COL_DEF_NET_DST:
2667 case COL_RES_NET_DST:
2668 case COL_UNRES_NET_DST:
2669 column_len = strlen(cf->cinfo.col_data[i]);
2670 if (column_len < 12)
2672 line_bufp = get_line_buf(buf_offset + column_len);
2673 sprintf(line_bufp + buf_offset, "%-12s", cf->cinfo.col_data[i]);
2677 column_len = strlen(cf->cinfo.col_data[i]);
2678 line_bufp = get_line_buf(buf_offset + column_len);
2679 strcat(line_bufp + buf_offset, cf->cinfo.col_data[i]);
2682 buf_offset += column_len;
2683 if (i != cf->cinfo.num_cols - 1) {
2685 * This isn't the last column, so we need to print a
2686 * separator between this column and the next.
2688 * If we printed a network source and are printing a
2689 * network destination of the same type next, separate
2690 * them with "->"; if we printed a network destination
2691 * and are printing a network source of the same type
2692 * next, separate them with "<-"; otherwise separate them
2695 * We add enough space to the buffer for " <- " or " -> ",
2696 * even if we're only adding " ".
2698 line_bufp = get_line_buf(buf_offset + 4);
2699 switch (cf->cinfo.col_fmt[i]) {
2704 switch (cf->cinfo.col_fmt[i + 1]) {
2709 strcat(line_bufp + buf_offset, " -> ");
2714 strcat(line_bufp + buf_offset, " ");
2720 case COL_DEF_DL_SRC:
2721 case COL_RES_DL_SRC:
2722 case COL_UNRES_DL_SRC:
2723 switch (cf->cinfo.col_fmt[i + 1]) {
2725 case COL_DEF_DL_DST:
2726 case COL_RES_DL_DST:
2727 case COL_UNRES_DL_DST:
2728 strcat(line_bufp + buf_offset, " -> ");
2733 strcat(line_bufp + buf_offset, " ");
2739 case COL_DEF_NET_SRC:
2740 case COL_RES_NET_SRC:
2741 case COL_UNRES_NET_SRC:
2742 switch (cf->cinfo.col_fmt[i + 1]) {
2744 case COL_DEF_NET_DST:
2745 case COL_RES_NET_DST:
2746 case COL_UNRES_NET_DST:
2747 strcat(line_bufp + buf_offset, " -> ");
2752 strcat(line_bufp + buf_offset, " ");
2761 switch (cf->cinfo.col_fmt[i + 1]) {
2766 strcat(line_bufp + buf_offset, " <- ");
2771 strcat(line_bufp + buf_offset, " ");
2777 case COL_DEF_DL_DST:
2778 case COL_RES_DL_DST:
2779 case COL_UNRES_DL_DST:
2780 switch (cf->cinfo.col_fmt[i + 1]) {
2782 case COL_DEF_DL_SRC:
2783 case COL_RES_DL_SRC:
2784 case COL_UNRES_DL_SRC:
2785 strcat(line_bufp + buf_offset, " <- ");
2790 strcat(line_bufp + buf_offset, " ");
2796 case COL_DEF_NET_DST:
2797 case COL_RES_NET_DST:
2798 case COL_UNRES_NET_DST:
2799 switch (cf->cinfo.col_fmt[i + 1]) {
2801 case COL_DEF_NET_SRC:
2802 case COL_RES_NET_SRC:
2803 case COL_UNRES_NET_SRC:
2804 strcat(line_bufp + buf_offset, " <- ");
2809 strcat(line_bufp + buf_offset, " ");
2816 strcat(line_bufp + buf_offset, " ");
2822 return print_line(print_stream, 0, line_bufp);
2826 print_packet(capture_file *cf, epan_dissect_t *edt)
2828 print_args_t print_args;
2831 /* Print the information in the protocol tree. */
2832 switch (output_action) {
2835 print_args.to_file = TRUE;
2836 print_args.format = print_format;
2837 print_args.print_summary = !verbose;
2838 print_args.print_hex = verbose && print_hex;
2839 print_args.print_formfeed = FALSE;
2840 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
2842 /* init the packet range */
2843 packet_range_init(&print_args.range);
2845 if (!proto_tree_print(&print_args, edt, print_stream))
2848 /* "print_hex_data()" will put out a leading blank line, as well
2849 as a trailing one; print one here, to separate the packets,
2850 only if "print_hex_data()" won't be called. */
2851 if (!print_line(print_stream, 0, ""))
2857 proto_tree_write_pdml(edt, stdout);
2859 return !ferror(stdout);
2861 proto_tree_write_fields(output_fields, edt, stdout);
2863 return !ferror(stdout);
2866 /* Just fill in the columns. */
2867 epan_dissect_fill_in_columns(edt);
2869 /* Now print them. */
2870 switch (output_action) {
2873 if (!print_columns(cf))
2878 proto_tree_write_psml(edt, stdout);
2879 return !ferror(stdout);
2880 case WRITE_FIELDS: /*No non-verbose "fields" format */
2881 g_assert_not_reached();
2886 if (!print_hex_data(print_stream, edt))
2888 if (!print_line(print_stream, 0, ""))
2897 switch (output_action) {
2900 return print_finale(print_stream);
2904 write_pdml_finale(stdout);
2906 write_psml_finale(stdout);
2907 return !ferror(stdout);
2910 write_fields_finale(output_fields, stdout);
2911 return !ferror(stdout);
2914 g_assert_not_reached();
2920 show_print_file_io_error(int err)
2925 cmdarg_err("Not all the packets could be printed because there is "
2926 "no space left on the file system.");
2931 cmdarg_err("Not all the packets could be printed because you are "
2932 "too close to, or over your disk quota.");
2937 cmdarg_err("An error occurred while printing packets: %s.",
2944 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
2948 static char errmsg_errno[1024+1];
2951 /* Wiretap error. */
2954 case WTAP_ERR_NOT_REGULAR_FILE:
2955 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
2958 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
2959 /* Seen only when opening a capture file for reading. */
2960 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
2963 case WTAP_ERR_UNSUPPORTED:
2964 /* Seen only when opening a capture file for reading. */
2965 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2966 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
2969 errmsg = errmsg_errno;
2972 case WTAP_ERR_CANT_WRITE_TO_PIPE:
2973 /* Seen only when opening a capture file for writing. */
2974 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2975 "The file \"%%s\" is a pipe, and %s capture files can't be "
2976 "written to a pipe.", wtap_file_type_string(file_type));
2977 errmsg = errmsg_errno;
2980 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2981 /* Seen only when opening a capture file for writing. */
2982 errmsg = "TShark doesn't support writing capture files in that format.";
2985 case WTAP_ERR_UNSUPPORTED_ENCAP:
2987 errmsg = "TShark can't save this capture in that format.";
2989 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2990 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
2993 errmsg = errmsg_errno;
2997 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2999 errmsg = "TShark can't save this capture in that format.";
3001 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
3004 case WTAP_ERR_BAD_RECORD:
3005 /* Seen only when opening a capture file for reading. */
3006 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3007 "The file \"%%s\" appears to be damaged or corrupt.\n"
3010 errmsg = errmsg_errno;
3013 case WTAP_ERR_CANT_OPEN:
3015 errmsg = "The file \"%s\" could not be created for some unknown reason.";
3017 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
3020 case WTAP_ERR_SHORT_READ:
3021 errmsg = "The file \"%s\" appears to have been cut short"
3022 " in the middle of a packet or other data.";
3025 case WTAP_ERR_SHORT_WRITE:
3026 errmsg = "A full header couldn't be written to the file \"%s\".";
3030 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3031 "The file \"%%s\" could not be %s: %s.",
3032 for_writing ? "created" : "opened",
3033 wtap_strerror(err));
3034 errmsg = errmsg_errno;
3038 errmsg = file_open_error_message(err, for_writing);
3043 * Open/create errors are reported with an console message in TShark.
3046 open_failure_message(const char *filename, int err, gboolean for_writing)
3048 fprintf(stderr, "tshark: ");
3049 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3050 fprintf(stderr, "\n");
3054 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3058 char err_msg[2048+1];
3060 wth = wtap_open_offline(fname, err, &err_info, FALSE);
3064 /* The open succeeded. Fill in the information for this file. */
3066 /* Initialize all data structures used for dissection. */
3070 cf->f_datalen = 0; /* not used, but set it anyway */
3072 /* Set the file name because we need it to set the follow stream filter.
3073 XXX - is that still true? We need it for other reasons, though,
3075 cf->filename = g_strdup(fname);
3077 /* Indicate whether it's a permanent or temporary file. */
3078 cf->is_tempfile = is_tempfile;
3080 /* If it's a temporary capture buffer file, mark it as not saved. */
3081 cf->user_saved = !is_tempfile;
3083 cf->cd_t = wtap_file_type(cf->wth);
3085 cf->drops_known = FALSE;
3087 cf->snap = wtap_snapshot_length(cf->wth);
3088 if (cf->snap == 0) {
3089 /* Snapshot length not known. */
3090 cf->has_snap = FALSE;
3091 cf->snap = WTAP_MAX_PACKET_SIZE;
3093 cf->has_snap = TRUE;
3094 nstime_set_zero(&cf->elapsed_time);
3095 nstime_set_unset(&first_ts);
3096 nstime_set_unset(&prev_dis_ts);
3097 nstime_set_unset(&prev_cap_ts);
3102 g_snprintf(err_msg, sizeof err_msg,
3103 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3104 cmdarg_err("%s", err_msg);
3110 * General errors are reported with an console message in TShark.
3113 failure_message(const char *msg_format, va_list ap)
3115 fprintf(stderr, "tshark: ");
3116 vfprintf(stderr, msg_format, ap);
3117 fprintf(stderr, "\n");
3121 * Read errors are reported with an console message in TShark.
3124 read_failure_message(const char *filename, int err)
3126 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3127 filename, strerror(err));
3131 * Report an error in command-line arguments.
3134 cmdarg_err(const char *fmt, ...)
3139 failure_message(fmt, ap);
3144 * Report additional information for an error in command-line arguments.
3147 cmdarg_err_cont(const char *fmt, ...)
3152 vfprintf(stderr, fmt, ap);
3153 fprintf(stderr, "\n");