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 capture_pcap_cb(u_char *, const struct pcap_pkthdr *,
160 static void report_counts(void);
162 static BOOL WINAPI capture_cleanup(DWORD);
164 static void capture_cleanup(int);
166 static void report_counts_siginfo(int);
169 #endif /* HAVE_LIBPCAP */
171 static int load_cap_file(capture_file *, char *, int, int, gint64);
172 static gboolean process_packet(capture_file *cf, gint64 offset,
173 const struct wtap_pkthdr *whdr, union wtap_pseudo_header *pseudo_header,
175 static void show_capture_file_io_error(const char *, int, gboolean);
176 static void show_print_file_io_error(int err);
177 static gboolean write_preamble(capture_file *cf);
178 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
179 static gboolean write_finale(void);
180 static const char *cf_open_error_message(int err, gchar *err_info,
181 gboolean for_writing, int file_type);
183 static void open_failure_message(const char *filename, int err,
184 gboolean for_writing);
185 static void failure_message(const char *msg_format, va_list ap);
186 static void read_failure_message(const char *filename, int err);
191 static void list_capture_types(void) {
194 fprintf(stderr, "editcap: The available capture file types for \"F\":\n");
195 for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
196 if (wtap_dump_can_open(i))
197 fprintf(stderr, " %s - %s\n",
198 wtap_file_type_short_string(i), wtap_file_type_string(i));
203 print_usage(gboolean print_ver)
210 "TShark " VERSION "%s\n"
211 "Dump and analyze network traffic.\n"
212 "See http://www.wireshark.org for more information.\n"
215 wireshark_svnversion, get_copyright_info());
219 fprintf(output, "\n");
220 fprintf(output, "Usage: tshark [options] ...\n");
221 fprintf(output, "\n");
224 fprintf(output, "Capture interface:\n");
225 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
226 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
227 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
228 fprintf(output, " -p don't capture in promiscuous mode\n");
230 fprintf(output, " -B <buffer size> size of kernel buffer (def: 1MB)\n");
232 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
233 fprintf(output, " -D print list of interfaces and exit\n");
234 fprintf(output, " -L print list of link-layer types of iface and exit\n");
235 fprintf(output, "\n");
236 fprintf(output, "Capture stop conditions:\n");
237 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
238 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
239 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
240 fprintf(output, " files:NUM - stop after NUM files\n");
241 /*fprintf(output, "\n");*/
242 fprintf(output, "Capture output:\n");
243 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
244 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
245 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
246 #endif /* HAVE_LIBPCAP */
248 /*fprintf(output, "\n");*/
249 fprintf(output, "Input file:\n");
250 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
252 fprintf(output, "\n");
253 fprintf(output, "Processing:\n");
254 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
255 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
256 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
257 fprintf(output, " -d %s ...\n", decode_as_arg_template);
258 fprintf(output, " \"Decode As\", see the man page for details\n");
259 fprintf(output, " Example: tcp.port==8888,http\n");
261 /*fprintf(output, "\n");*/
262 fprintf(output, "Output:\n");
263 fprintf(output, " -w <outfile|-> set the output filename (or '-' for stdout)\n");
264 fprintf(output, " -F <output file type> set the output file type, default is libpcap\n");
265 fprintf(output, " an empty \"-F\" option will list the file types\n");
266 fprintf(output, " -V add output of packet tree (Packet Details)\n");
267 fprintf(output, " -S display packets even when writing to a file\n");
268 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
269 fprintf(output, " -T pdml|ps|psml|text|fields\n");
270 fprintf(output, " format of text output (def: text)\n");
271 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
272 fprintf(output, " this option can be repeated to print multiple fields\n");
273 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
274 fprintf(output, " header=y|n switch headers on and off\n");
275 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
276 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
277 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
278 fprintf(output, " -l flush standard output after each packet\n");
279 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
280 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
281 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
283 fprintf(output, "\n");
284 fprintf(output, "Miscellaneous:\n");
285 fprintf(output, " -h display this help and exit\n");
286 fprintf(output, " -v display version info and exit\n");
287 fprintf(output, " -o <name>:<value> ... override preference setting\n");
291 * For a dissector table, print on the stream described by output,
292 * its short name (which is what's used in the "-d" option) and its
296 display_dissector_table_names(const char *table_name, const char *ui_name,
299 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
303 * For a dissector handle, print on the stream described by output,
304 * the filter name (which is what's used in the "-d" option) and the full
305 * name for the protocol that corresponds to this handle.
308 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
311 const gchar* proto_filter_name;
312 const gchar* proto_ui_name;
314 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
316 if (proto_id != -1) {
317 proto_filter_name = proto_get_protocol_filter_name(proto_id);
318 proto_ui_name = proto_get_protocol_name(proto_id);
319 g_assert(proto_filter_name != NULL);
320 g_assert(proto_ui_name != NULL);
322 fprintf((FILE *)output, "\t%s (%s)\n",
329 * The protocol_name_search structure is used by find_protocol_name_func()
330 * to pass parameters and store results
332 struct protocol_name_search{
333 gchar *searched_name; /* Protocol filter name we are looking for */
334 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
335 guint nb_match; /* How many dissectors matched searched_name */
337 typedef struct protocol_name_search *protocol_name_search_t;
340 * This function parses all dissectors associated with a table to find the
341 * one whose protocol has the specified filter name. It is called
342 * as a reference function in a call to dissector_table_foreach_handle.
343 * The name we are looking for, as well as the results, are stored in the
344 * protocol_name_search struct pointed to by user_data.
345 * If called using dissector_table_foreach_handle, we actually parse the
346 * whole list of dissectors.
349 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
353 const gchar *protocol_filter_name;
354 protocol_name_search_t search_info;
358 search_info = (protocol_name_search_t)user_data;
360 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
361 if (proto_id != -1) {
362 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
363 g_assert(protocol_filter_name != NULL);
364 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
366 if (search_info->nb_match == 0) {
367 /* Record this handle only if this is the first match */
368 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
370 search_info->nb_match++;
376 * Print all layer type names supported.
377 * We send the output to the stream described by the handle output.
381 fprint_all_layer_types(FILE *output)
384 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
388 * Print all protocol names supported for a specific layer type.
389 * table_name contains the layer type name in which the search is performed.
390 * We send the output to the stream described by the handle output.
394 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
397 dissector_table_foreach_handle(table_name,
398 display_dissector_names,
403 * The function below parses the command-line parameters for the decode as
404 * feature (a string pointer by cl_param).
405 * It checks the format of the command-line, searches for a matching table
406 * and dissector. If a table/dissector match is not found, we display a
407 * summary of the available tables/dissectors (on stderr) and return FALSE.
408 * If everything is fine, we get the "Decode as" preference activated,
409 * then we return TRUE.
412 add_decode_as(const gchar *cl_param)
416 gchar *decoded_param;
417 gchar *remaining_param;
419 gchar *dissector_str;
420 dissector_handle_t dissector_matching;
421 dissector_table_t table_matching;
422 ftenum_t dissector_table_selector_type;
423 struct protocol_name_search user_protocol_name;
425 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
428 decoded_param = g_malloc( sizeof(gchar) * (strlen(cl_param) + 1) ); /* Allocate enough space to have a working copy of the command-line parameter */
429 g_assert(decoded_param);
430 strcpy(decoded_param, cl_param);
433 /* The lines below will parse this string (modifying it) to extract all
434 necessary information. Note that decoded_param is still needed since
435 strings are not copied - we just save pointers. */
437 /* This section extracts a layer type (table_name) from decoded_param */
438 table_name = decoded_param; /* Layer type string starts from beginning */
440 remaining_param = strchr(table_name, '=');
441 if (remaining_param == NULL) {
442 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
443 /* If the argument does not follow the template, carry on anyway to check
444 if the table name is at least correct. If remaining_param is NULL,
445 we'll exit anyway further down */
448 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
451 /* Remove leading and trailing spaces from the table name */
452 while ( table_name[0] == ' ' )
454 while ( table_name[strlen(table_name) - 1] == ' ' )
455 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
457 /* The following part searches a table matching with the layer type specified */
458 table_matching = NULL;
460 /* Look for the requested table */
461 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
462 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
465 table_matching = find_dissector_table(table_name);
466 if (!table_matching) {
467 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
471 if (!table_matching) {
472 /* Display a list of supported layer types to help the user, if the
473 specified layer type was not found */
474 cmdarg_err("Valid layer types are:");
475 fprint_all_layer_types(stderr);
477 if (remaining_param == NULL || !table_matching) {
478 /* Exit if the layer type was not found, or if no '=' separator was found
480 g_free(decoded_param);
484 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
485 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
488 remaining_param++; /* Move to the second '=' */
489 *remaining_param = '\0'; /* Remove the second '=' */
491 remaining_param++; /* Position after the layer type string */
493 /* This section extracts a selector value (selector_str) from decoded_param */
495 selector_str = remaining_param; /* Next part starts with the selector number */
497 remaining_param = strchr(selector_str, ',');
498 if (remaining_param == NULL) {
499 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
500 /* If the argument does not follow the template, carry on anyway to check
501 if the selector value is at least correct. If remaining_param is NULL,
502 we'll exit anyway further down */
505 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
508 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
510 switch (dissector_table_selector_type) {
516 /* The selector for this table is an unsigned number. Parse it as such.
517 There's no need to remove leading and trailing spaces from the
518 selector number string, because sscanf will do that for us. */
519 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
520 cmdarg_err("Invalid selector number \"%s\"", selector_str);
521 g_free(decoded_param);
528 /* The selector for this table is a string. */
532 /* There are currently no dissector tables with any types other
533 than the ones listed above. */
534 g_assert_not_reached();
537 if (remaining_param == NULL) {
538 /* Exit if no ',' separator was found (see above) */
539 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
540 fprint_all_protocols_for_layer_types(stderr, table_name);
541 g_free(decoded_param);
545 remaining_param++; /* Position after the selector number string */
547 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
549 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
551 /* Remove leading and trailing spaces from the dissector name */
552 while ( dissector_str[0] == ' ' )
554 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
555 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
557 dissector_matching = NULL;
559 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
560 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 */
561 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
564 user_protocol_name.nb_match = 0;
565 user_protocol_name.searched_name = dissector_str;
566 user_protocol_name.matched_handle = NULL;
568 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 */
570 if (user_protocol_name.nb_match != 0) {
571 dissector_matching = user_protocol_name.matched_handle;
572 if (user_protocol_name.nb_match > 1) {
573 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
577 /* OK, check whether the problem is that there isn't any such
578 protocol, or that there is but it's not specified as a protocol
579 that's valid for that dissector table.
580 Note, we don't exit here, but dissector_matching will remain NULL,
582 if (proto_get_id_by_filter_name(dissector_str) == -1) {
583 /* No such protocol */
584 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
586 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
587 dissector_str, table_name);
592 if (!dissector_matching) {
593 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
594 fprint_all_protocols_for_layer_types(stderr, table_name);
595 g_free(decoded_param);
599 /* This is the end of the code that parses the command-line options.
600 All information is now stored in the variables:
604 The above variables that are strings are still pointing to areas within
605 decoded_parm. decoded_parm thus still needs to be kept allocated in
606 until we stop needing these variables
607 decoded_param will be deallocated at each exit point of this function */
610 /* We now have a pointer to the handle for the requested dissector
611 (requested protocol) inside the variable dissector_matching */
612 switch (dissector_table_selector_type) {
618 /* The selector for this table is an unsigned number. */
619 dissector_change(table_name, selector, dissector_matching);
624 /* The selector for this table is a string. */
625 dissector_change_string(table_name, selector_str, dissector_matching);
629 /* There are currently no dissector tables with any types other
630 than the ones listed above. */
631 g_assert_not_reached();
633 g_free(decoded_param); /* "Decode As" rule has been succesfully added */
638 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
639 const gchar *message _U_, gpointer user_data _U_)
644 output_file_description(const char *fname)
646 char *save_file_string;
648 /* Get a string that describes what we're writing to */
649 if (strcmp(fname, "-") == 0) {
650 /* We're writing to the standard output */
651 save_file_string = g_strdup("standard output");
653 /* We're writing to a file with the name in save_file */
654 save_file_string = g_strdup_printf("file \"%s\"", fname);
656 return save_file_string;
660 print_current_user() {
661 gchar *cur_user, *cur_group;
662 if (started_with_special_privs()) {
663 cur_user = get_cur_username();
664 cur_group = get_cur_groupname();
665 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
666 cur_user, cur_group);
669 if (running_with_special_privs()) {
670 fprintf(stderr, " This could be dangerous.");
672 fprintf(stderr, "\n");
677 check_capture_privs() {
680 /* Warn the user if npf.sys isn't loaded. */
681 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
682 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
683 "capturing or\nlisting interfaces.\n");
691 main(int argc, char *argv[])
693 char *init_progfile_dir_error;
696 gboolean arg_error = FALSE;
702 char *gpf_path, *pf_path;
703 char *gdp_path, *dp_path;
704 int gpf_open_errno, gpf_read_errno;
705 int pf_open_errno, pf_read_errno;
706 int gdp_open_errno, gdp_read_errno;
707 int dp_open_errno, dp_read_errno;
710 gboolean list_link_layer_types = FALSE;
711 gboolean start_capture = FALSE;
714 gboolean capture_option_specified = FALSE;
716 gboolean quiet = FALSE;
717 int out_file_type = WTAP_FILE_PCAP;
718 gchar *cf_name = NULL, *rfilter = NULL;
719 #ifdef HAVE_PCAP_OPEN_DEAD
720 struct bpf_program fcode;
722 dfilter_t *rfcode = NULL;
725 GLogLevelFlags log_flags;
728 #define OPTSTRING_INIT "a:b:c:d:De:E:f:F:G:hi:lLnN:o:pqr:R:s:St:T:vVw:xX:y:z:"
731 #define OPTSTRING_WIN32 "B:"
733 #define OPTSTRING_WIN32 ""
736 #define OPTSTRING_WIN32 ""
737 #endif /* HAVE_LIBPCAP */
739 static const char optstring[] = OPTSTRING_INIT OPTSTRING_WIN32;
742 * Get credential information for later use.
744 get_credential_info();
747 * Attempt to get the pathname of the executable file.
749 init_progfile_dir_error = init_progfile_dir(argv[0]);
750 if (init_progfile_dir_error != NULL) {
751 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
752 init_progfile_dir_error);
756 * In order to have the -X opts assigned before the wslua machine starts
757 * we need to call getopts before epan_init() gets called.
760 optind_initial = optind;
762 while ((opt = getopt(argc, argv, optstring)) != -1) {
772 optind = optind_initial;
775 /* nothing more than the standard GLib handler, but without a warning */
782 g_log_set_handler(NULL,
784 log_func_ignore, NULL /* user_data */);
785 g_log_set_handler(LOG_DOMAIN_CAPTURE,
787 log_func_ignore, NULL /* user_data */);
789 initialize_funnel_ops();
792 capture_opts_init(&capture_opts, NULL /* cfile */);
795 timestamp_set_type(TS_RELATIVE);
796 timestamp_set_precision(TS_PREC_AUTO);
798 /* Register all dissectors; we must do this before checking for the
799 "-G" flag, as the "-G" flag dumps information registered by the
800 dissectors, and we must do it before we read the preferences, in
801 case any dissectors register preferences. */
802 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
803 failure_message, open_failure_message, read_failure_message);
805 /* Register all tap listeners; we do this before we parse the arguments,
806 as the "-z" argument can specify a registered tap. */
808 /* we register the plugin taps before the other taps because
809 stats_tree taps plugins will be registered as tap listeners
810 by stats_tree_stat.c and need to registered before that */
812 register_all_plugin_tap_listeners();
814 register_all_tap_listeners();
816 /* Now register the preferences for any non-dissector modules.
817 We must do that before we read the preferences as well. */
818 prefs_register_modules();
820 /* If invoked with the "-G" flag, we dump out information based on
821 the argument to the "-G" flag; if no argument is specified,
822 for backwards compatibility we dump out a glossary of display
825 XXX - we do this here, for now, to support "-G" with no arguments.
826 If none of our build or other processes uses "-G" with no arguments,
827 we can just process it with the other arguments. */
828 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
830 proto_registrar_dump_fields(1);
832 if (strcmp(argv[2], "fields") == 0)
833 proto_registrar_dump_fields(1);
834 else if (strcmp(argv[2], "fields2") == 0)
835 proto_registrar_dump_fields(2);
836 else if (strcmp(argv[2], "fields3") == 0)
837 proto_registrar_dump_fields(3);
838 else if (strcmp(argv[2], "protocols") == 0)
839 proto_registrar_dump_protocols();
840 else if (strcmp(argv[2], "values") == 0)
841 proto_registrar_dump_values();
842 else if (strcmp(argv[2], "decodes") == 0)
843 dissector_dump_decodes();
844 else if (strcmp(argv[2], "defaultprefs") == 0)
846 else if (strcmp(argv[2], "currentprefs") == 0) {
847 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
848 &pf_open_errno, &pf_read_errno, &pf_path);
851 cmdarg_err("Invalid \"%s\" option for -G flag", argv[2]);
858 /* Set the C-language locale to the native environment. */
859 setlocale(LC_ALL, "");
861 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
862 &pf_open_errno, &pf_read_errno, &pf_path);
863 if (gpf_path != NULL) {
864 if (gpf_open_errno != 0) {
865 cmdarg_err("Can't open global preferences file \"%s\": %s.",
866 pf_path, strerror(gpf_open_errno));
868 if (gpf_read_errno != 0) {
869 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
870 pf_path, strerror(gpf_read_errno));
873 if (pf_path != NULL) {
874 if (pf_open_errno != 0) {
875 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
876 strerror(pf_open_errno));
878 if (pf_read_errno != 0) {
879 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
880 pf_path, strerror(pf_read_errno));
886 /* Set the name resolution code's flags from the preferences. */
887 g_resolv_flags = prefs->name_resolve;
889 /* Read the disabled protocols file. */
890 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
891 &dp_path, &dp_open_errno, &dp_read_errno);
892 if (gdp_path != NULL) {
893 if (gdp_open_errno != 0) {
894 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
895 gdp_path, strerror(gdp_open_errno));
897 if (gdp_read_errno != 0) {
898 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
899 gdp_path, strerror(gdp_read_errno));
903 if (dp_path != NULL) {
904 if (dp_open_errno != 0) {
906 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
907 strerror(dp_open_errno));
909 if (dp_read_errno != 0) {
911 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
912 strerror(dp_read_errno));
917 check_capture_privs();
919 init_cap_file(&cfile);
921 /* Assemble the compile-time version information string */
922 comp_info_str = g_string_new("Compiled ");
923 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
925 /* Assemble the run-time version information string */
926 runtime_info_str = g_string_new("Running ");
927 get_runtime_version_info(runtime_info_str, NULL);
929 /* Print format defaults to this. */
930 print_format = PR_FMT_TEXT;
932 output_fields = output_fields_new();
934 /* Now get our args */
935 while ((opt = getopt(argc, argv, optstring)) != -1) {
937 case 'a': /* autostop criteria */
938 case 'b': /* Ringbuffer option */
939 case 'c': /* Capture x packets */
940 case 'f': /* capture filter */
941 case 'i': /* Use interface x */
942 case 'p': /* Don't capture in promiscuous mode */
943 case 's': /* Set the snapshot (capture) length */
944 case 'w': /* Write to capture file x */
945 case 'y': /* Set the pcap data link type */
947 case 'B': /* Buffer size */
950 status = capture_opts_add_opt(&capture_opts, opt, optarg, &start_capture);
955 capture_option_specified = TRUE;
959 case 'd': /* Decode as rule */
960 if (!add_decode_as(optarg))
963 case 'D': /* Print a list of capture devices and exit */
965 status = capture_opts_list_interfaces(FALSE);
968 capture_option_specified = TRUE;
974 output_fields_add(output_fields, optarg);
978 if(!output_fields_set_option(output_fields, optarg)) {
979 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
980 output_fields_list_options(stderr);
985 out_file_type = wtap_short_string_to_file_type(optarg);
986 if (out_file_type < 0) {
987 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
988 list_capture_types();
992 case 'h': /* Print help and exit */
996 case 'l': /* "Line-buffer" standard output */
997 /* This isn't line-buffering, strictly speaking, it's just
998 flushing the standard output after the information for
999 each packet is printed; however, that should be good
1000 enough for all the purposes to which "-l" is put (and
1001 is probably actually better for "-V", as it does fewer
1004 See the comment in "process_packet()" for an explanation of
1005 why we do that, and why we don't just use "setvbuf()" to
1006 make the standard output line-buffered (short version: in
1007 Windows, "line-buffered" is the same as "fully-buffered",
1008 and the output buffer is only flushed when it fills up). */
1009 line_buffered = TRUE;
1011 case 'L': /* Print list of link-layer types and exit */
1013 list_link_layer_types = TRUE;
1016 capture_option_specified = TRUE;
1020 case 'n': /* No name resolution */
1021 g_resolv_flags = RESOLV_NONE;
1023 case 'N': /* Select what types of addresses/port #s to resolve */
1024 if (g_resolv_flags == RESOLV_ALL)
1025 g_resolv_flags = RESOLV_NONE;
1026 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
1027 if (badopt != '\0') {
1028 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
1033 case 'o': /* Override preference from command line */
1034 switch (prefs_set_pref(optarg)) {
1039 case PREFS_SET_SYNTAX_ERR:
1040 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1044 case PREFS_SET_NO_SUCH_PREF:
1045 case PREFS_SET_OBSOLETE:
1046 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1051 case 'q': /* Quiet */
1054 case 'r': /* Read capture file x */
1055 cf_name = g_strdup(optarg);
1057 case 'R': /* Read file filter */
1060 case 'S': /* show packets in real time */
1061 print_packet_info = TRUE;
1063 case 't': /* Time stamp type */
1064 if (strcmp(optarg, "r") == 0)
1065 timestamp_set_type(TS_RELATIVE);
1066 else if (strcmp(optarg, "a") == 0)
1067 timestamp_set_type(TS_ABSOLUTE);
1068 else if (strcmp(optarg, "ad") == 0)
1069 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1070 else if (strcmp(optarg, "d") == 0)
1071 timestamp_set_type(TS_DELTA);
1072 else if (strcmp(optarg, "dd") == 0)
1073 timestamp_set_type(TS_DELTA_DIS);
1074 else if (strcmp(optarg, "e") == 0)
1075 timestamp_set_type(TS_EPOCH);
1077 cmdarg_err("Invalid time stamp type \"%s\"",
1079 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1080 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1084 case 'T': /* printing Type */
1085 if (strcmp(optarg, "text") == 0) {
1086 output_action = WRITE_TEXT;
1087 print_format = PR_FMT_TEXT;
1088 } else if (strcmp(optarg, "ps") == 0) {
1089 output_action = WRITE_TEXT;
1090 print_format = PR_FMT_PS;
1091 } else if (strcmp(optarg, "pdml") == 0) {
1092 output_action = WRITE_XML;
1094 } else if (strcmp(optarg, "psml") == 0) {
1095 output_action = WRITE_XML;
1097 } else if(strcmp(optarg, "fields") == 0) {
1098 output_action = WRITE_FIELDS;
1099 verbose = TRUE; /* Need full tree info */
1101 cmdarg_err("Invalid -T parameter.");
1102 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1106 case 'v': /* Show version and exit */
1107 printf("TShark " VERSION "%s\n"
1114 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
1115 runtime_info_str->str);
1118 case 'V': /* Verbose */
1121 case 'x': /* Print packet data in hex (and ASCII) */
1127 /* We won't call the init function for the stat this soon
1128 as it would disallow MATE's fields (which are registered
1129 by the preferences set callback) from being used as
1130 part of a tap filter. Instead, we just add the argument
1131 to a list of stat arguments. */
1132 if (!process_stat_cmd_arg(optarg)) {
1133 cmdarg_err("invalid -z argument.");
1134 cmdarg_err_cont(" -z argument must be one of :");
1135 list_stat_cmd_args();
1140 case '?': /* Bad flag - print usage message */
1143 list_capture_types();
1153 /* If we specified output fields, but not the output field type... */
1154 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1155 cmdarg_err("Output fields were specified with \"-e\", "
1156 "but \"-Tfields\" was not specified.");
1158 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1159 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1160 "specified with \"-e\".");
1165 /* If no capture filter or read filter has been specified, and there are
1166 still command-line arguments, treat them as the tokens of a capture
1167 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1168 flag was specified. */
1169 if (optind < argc) {
1170 if (cf_name != NULL) {
1171 if (rfilter != NULL) {
1172 cmdarg_err("Read filters were specified both with \"-R\" "
1173 "and with additional command-line arguments");
1176 rfilter = get_args_as_string(argc, argv, optind);
1179 if (capture_opts.has_cfilter) {
1180 cmdarg_err("Capture filters were specified both with \"-f\""
1181 " and with additional command-line arguments");
1184 capture_opts.has_cfilter = TRUE;
1185 capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1187 capture_option_specified = TRUE;
1193 if (!capture_opts.saving_to_file) {
1194 /* We're not saving the capture to a file; if "-q" wasn't specified,
1195 we should print packet information */
1197 print_packet_info = TRUE;
1199 /* We're saving to a file; if we're writing to the standard output.
1200 and we'll also be writing dissected packets to the standard
1201 output, reject the request. At best, we could redirect that
1202 to the standard error; we *can't* write both to the standard
1203 output and have either of them be useful. */
1204 if (strcmp(capture_opts.save_file, "-") == 0 && print_packet_info) {
1205 cmdarg_err("You can't write both raw packet data and dissected packets"
1206 " to the standard output.");
1211 /* We're not saving the capture to a file; if "-q" wasn't specified,
1212 we should print packet information */
1214 print_packet_info = TRUE;
1217 #ifndef HAVE_LIBPCAP
1218 if (capture_option_specified)
1219 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1226 /* We don't support capture filters when reading from a capture file
1227 (the BPF compiler doesn't support all link-layer types that we
1228 support in capture files we read). */
1230 if (cf_name != NULL) {
1231 if (capture_opts.has_cfilter) {
1232 cmdarg_err("Only read filters, not capture filters, "
1233 "can be specified when reading a capture file.");
1240 if (output_action != WRITE_TEXT) {
1241 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1247 if (list_link_layer_types) {
1248 /* We're supposed to list the link-layer types for an interface;
1249 did the user also specify a capture file to be read? */
1251 /* Yes - that's bogus. */
1252 cmdarg_err("You can't specify -L and a capture file to be read.");
1255 /* No - did they specify a ring buffer option? */
1256 if (capture_opts.multi_files_on) {
1257 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1263 * "-r" was specified, so we're reading a capture file.
1264 * Capture options don't apply here.
1266 if (capture_opts.multi_files_on) {
1267 cmdarg_err("Multiple capture files requested, but "
1268 "a capture isn't being done.");
1271 if (capture_opts.has_file_duration) {
1272 cmdarg_err("Switching capture files after a time interval was specified, but "
1273 "a capture isn't being done.");
1276 if (capture_opts.has_ring_num_files) {
1277 cmdarg_err("A ring buffer of capture files was specified, but "
1278 "a capture isn't being done.");
1281 if (capture_opts.has_autostop_files) {
1282 cmdarg_err("A maximum number of capture files was specified, but "
1283 "a capture isn't being done.");
1287 /* Note: TShark now allows the restriction of a _read_ file by packet count
1288 * and byte count as well as a write file. Other autostop options remain valid
1289 * only for a write file.
1291 if (capture_opts.has_autostop_duration) {
1292 cmdarg_err("A maximum capture time was specified, but "
1293 "a capture isn't being done.");
1298 * "-r" wasn't specified, so we're doing a live capture.
1300 if (capture_opts.saving_to_file) {
1301 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1303 /* When capturing, we only support writing libpcap format. */
1304 if (out_file_type != WTAP_FILE_PCAP) {
1305 cmdarg_err("Live captures can only be saved in libpcap format.");
1308 if (capture_opts.multi_files_on) {
1309 /* Multiple-file mode doesn't work under certain conditions:
1310 a) it doesn't work if you're writing to the standard output;
1311 b) it doesn't work if you're writing to a pipe;
1313 if (strcmp(capture_opts.save_file, "-") == 0) {
1314 cmdarg_err("Multiple capture files requested, but "
1315 "the capture is being written to the standard output.");
1318 if (capture_opts.output_to_pipe) {
1319 cmdarg_err("Multiple capture files requested, but "
1320 "the capture file is a pipe.");
1323 if (!capture_opts.has_autostop_filesize &&
1324 !capture_opts.has_file_duration) {
1325 cmdarg_err("Multiple capture files requested, but "
1326 "no maximum capture file size or duration was specified.");
1331 /* They didn't specify a "-w" flag, so we won't be saving to a
1332 capture file. Check for options that only make sense if
1333 we're saving to a file. */
1334 if (capture_opts.has_autostop_filesize) {
1335 cmdarg_err("Maximum capture file size specified, but "
1336 "capture isn't being saved to a file.");
1339 if (capture_opts.multi_files_on) {
1340 cmdarg_err("Multiple capture files requested, but "
1341 "the capture isn't being saved to a file.");
1350 /* Start windows sockets */
1351 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1354 /* Notify all registered modules that have had any of their preferences
1355 changed either from one of the preferences file or from the command
1356 line that their preferences have changed. */
1359 /* At this point MATE will have registered its field array so we can
1360 have a tap filter with one of MATE's late-registered fields as part
1361 of the filter. We can now process all the "-z" arguments. */
1362 start_requested_stats();
1364 /* disabled protocols as per configuration file */
1365 if (gdp_path == NULL && dp_path == NULL) {
1366 set_disabled_protos_list();
1369 /* Build the column format array */
1370 col_setup(&cfile.cinfo, prefs->num_cols);
1371 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1372 cfile.cinfo.col_fmt[i] = get_column_format(i);
1373 cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
1374 cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
1376 get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
1377 cfile.cinfo.col_data[i] = NULL;
1378 if (cfile.cinfo.col_fmt[i] == COL_INFO)
1379 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
1381 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1382 cfile.cinfo.col_fence[i] = 0;
1383 cfile.cinfo.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1384 cfile.cinfo.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
1387 for (i = 0; i < cfile.cinfo.num_cols; i++) {
1390 for (j = 0; j < NUM_COL_FMTS; j++) {
1391 if (!cfile.cinfo.fmt_matx[i][j])
1394 if (cfile.cinfo.col_first[j] == -1)
1395 cfile.cinfo.col_first[j] = i;
1396 cfile.cinfo.col_last[j] = i;
1401 capture_opts_trim_snaplen(&capture_opts, MIN_PACKET_SIZE);
1402 capture_opts_trim_ring_num_files(&capture_opts);
1405 if (rfilter != NULL) {
1406 if (!dfilter_compile(rfilter, &rfcode)) {
1407 cmdarg_err("%s", dfilter_error_msg);
1409 #ifdef HAVE_PCAP_OPEN_DEAD
1413 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1415 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1417 " Note: That display filter code looks like a valid capture filter;");
1419 " maybe you mixed them up?");
1428 cfile.rfcode = rfcode;
1430 if (print_packet_info) {
1431 /* If we're printing as text or PostScript, we have
1432 to create a print stream. */
1433 if (output_action == WRITE_TEXT) {
1434 switch (print_format) {
1437 print_stream = print_stream_text_stdio_new(stdout);
1441 print_stream = print_stream_ps_stdio_new(stdout);
1445 g_assert_not_reached();
1450 /* We have to dissect each packet if:
1452 we're printing information about each packet;
1454 we're using a read filter on the packets;
1456 we're using any taps. */
1457 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1461 * We're reading a capture file.
1465 * Immediately relinquish any special privileges we have; we must not
1466 * be allowed to read any capture files the user running TShark
1469 relinquish_special_privs_perm();
1470 print_current_user();
1472 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1477 /* Set timestamp precision; there should arguably be a command-line
1478 option to let the user set this. */
1479 switch(wtap_file_tsprecision(cfile.wth)) {
1480 case(WTAP_FILE_TSPREC_SEC):
1481 timestamp_set_precision(TS_PREC_AUTO_SEC);
1483 case(WTAP_FILE_TSPREC_DSEC):
1484 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1486 case(WTAP_FILE_TSPREC_CSEC):
1487 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1489 case(WTAP_FILE_TSPREC_MSEC):
1490 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1492 case(WTAP_FILE_TSPREC_USEC):
1493 timestamp_set_precision(TS_PREC_AUTO_USEC);
1495 case(WTAP_FILE_TSPREC_NSEC):
1496 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1499 g_assert_not_reached();
1502 /* Process the packets in the file */
1504 err = load_cap_file(&cfile, capture_opts.save_file, out_file_type,
1505 capture_opts.has_autostop_packets ? capture_opts.autostop_packets : 0,
1506 capture_opts.has_autostop_filesize ? capture_opts.autostop_filesize : 0);
1508 err = load_cap_file(&cfile, NULL, out_file_type, 0, 0);
1516 /* No capture file specified, so we're supposed to do a live capture
1517 (or get a list of link-layer types for a live capture device);
1518 do we have support for live captures? */
1525 cmdarg_err("WinPcap couldn't be found.");
1526 detailed_err = cant_load_winpcap_err("TShark");
1527 cmdarg_err_cont("%s", detailed_err);
1528 g_free(detailed_err);
1533 /* trim the interface name and exit if that failed */
1534 if (!capture_opts_trim_iface(&capture_opts,
1535 (prefs->capture_device) ? get_if_name(prefs->capture_device) : NULL)) {
1539 /* if requested, list the link layer types and exit */
1540 if (list_link_layer_types) {
1541 status = capture_opts_list_link_layer_types(&capture_opts, FALSE);
1545 if (print_packet_info) {
1546 if (!write_preamble(NULL)) {
1548 show_print_file_io_error(err);
1551 } else if (!quiet) {
1553 * We're not printing information for each packet, and the user
1554 * didn't ask us not to print a count of packets as they arrive,
1555 * so print that count so the user knows that packets are arriving.
1557 * XXX - what if the user wants to do a live capture, doesn't want
1558 * to save it to a file, doesn't want information printed for each
1559 * packet, does want some "-z" statistic, and wants packet counts
1560 * so they know whether they're seeing any packets?
1562 print_packet_counts = TRUE;
1565 /* For now, assume libpcap gives microsecond precision. */
1566 timestamp_set_precision(TS_PREC_AUTO_USEC);
1570 if (print_packet_info) {
1571 if (!write_finale()) {
1573 show_print_file_io_error(err);
1577 /* No - complain. */
1578 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1583 draw_tap_listeners(TRUE);
1584 funnel_dump_all_text_windows();
1587 output_fields_free(output_fields);
1588 output_fields = NULL;
1593 /*#define USE_BROKEN_G_MAIN_LOOP*/
1595 #ifdef USE_BROKEN_G_MAIN_LOOP
1598 gboolean loop_running = FALSE;
1600 guint32 packet_count = 0;
1603 /* XXX - move to the right position / file */
1604 /* read from a pipe (callback) */
1605 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1607 typedef struct pipe_input_tag {
1611 pipe_input_cb_t input_cb;
1612 guint pipe_input_id;
1614 GStaticMutex callback_running;
1618 static pipe_input_t pipe_input;
1621 /* The timer has expired, see if there's stuff to read from the pipe,
1622 if so, do the callback */
1624 pipe_timer_cb(gpointer data)
1628 gboolean result, result1;
1630 pipe_input_t *pipe_input = data;
1631 gint iterations = 0;
1634 g_static_mutex_lock (&pipe_input->callback_running);
1636 /* try to read data from the pipe only 5 times, to avoid blocking */
1637 while(iterations < 5) {
1638 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1640 /* Oddly enough although Named pipes don't work on win9x,
1641 PeekNamedPipe does !!! */
1642 handle = (HANDLE) _get_osfhandle (pipe_input->source);
1643 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1645 /* Get the child process exit status */
1646 result1 = GetExitCodeProcess((HANDLE)*(pipe_input->child_process),
1649 /* If the Peek returned an error, or there are bytes to be read
1650 or the childwatcher thread has terminated then call the normal
1652 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1654 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1656 /* And call the real handler */
1657 if (!pipe_input->input_cb(pipe_input->source, pipe_input->user_data)) {
1658 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1659 /* pipe closed, return false so that the timer is stopped */
1660 g_static_mutex_unlock (&pipe_input->callback_running);
1665 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1666 /* No data, stop now */
1673 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1675 g_static_mutex_unlock (&pipe_input->callback_running);
1677 /* we didn't stopped the timer, so let it run */
1684 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1687 pipe_input.source = source;
1688 pipe_input.child_process = child_process;
1689 pipe_input.user_data = user_data;
1690 pipe_input.input_cb = input_cb;
1693 g_static_mutex_init(&pipe_input.callback_running);
1694 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1695 do this but that doesn't cover all win32 platforms. GTK can do
1696 this but doesn't seem to work over processes. Attempt to do
1697 something similar here, start a timer and check for data on every
1699 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1700 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1710 #ifdef USE_TSHARK_SELECT
1714 void (*oldhandler)(int);
1718 * XXX - dropping privileges is still required, until code cleanup is done
1720 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1721 * when it's done, we don't need special privileges to run tshark at all,
1722 * therefore we don't need to drop these privileges
1723 * The only thing we might want to keep is a warning if tshark is run as root,
1724 * as it's no longer necessary and potentially dangerous.
1726 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1727 * We've opened the capture device, so we shouldn't need any special
1728 * privileges any more; relinquish those privileges.
1730 * XXX - if we have saved set-user-ID support, we should give up those
1731 * privileges immediately, and then reclaim them long enough to get
1732 * a list of network interfaces and to open one, and then give them
1733 * up again, so that stuff we do while processing the argument list,
1734 * reading the user's preferences, loading and starting plugins
1735 * (especially *user* plugins), etc. is done with the user's privileges,
1736 * not special privileges.
1738 relinquish_special_privs_perm();
1739 print_current_user();
1741 /* Initialize all data structures used for dissection. */
1745 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
1746 SetConsoleCtrlHandler(capture_cleanup, TRUE);
1748 /* Catch SIGINT and SIGTERM and, if we get either of them, clean up
1750 XXX - deal with signal semantics on various UNIX platforms. Or just
1751 use "sigaction()" and be done with it? */
1752 signal(SIGTERM, capture_cleanup);
1753 signal(SIGINT, capture_cleanup);
1754 if ((oldhandler = signal(SIGHUP, capture_cleanup)) != SIG_DFL)
1755 signal(SIGHUP, oldhandler);
1758 /* Catch SIGINFO and, if we get it and we're capturing to a file in
1759 quiet mode, report the number of packets we've captured. */
1760 signal(SIGINFO, report_counts_siginfo);
1761 #endif /* SIGINFO */
1764 capture_opts.state = CAPTURE_PREPARING;
1766 /* Let the user know what interface was chosen. */
1767 capture_opts.iface_descr = get_interface_descriptive_name(capture_opts.iface);
1768 fprintf(stderr, "Capturing on %s\n", capture_opts.iface_descr);
1770 ret = sync_pipe_start(&capture_opts);
1775 /* the actual capture loop
1777 * XXX - glib doesn't seem to provide any event based loop handling.
1779 * XXX - for whatever reason,
1780 * calling g_main_loop_new() ends up in 100% cpu load.
1782 * But that doesn't matter: in UNIX we can use select() to find an input
1783 * source with something to do.
1785 * But that doesn't matter because we're in a CLI (that doesn't need to
1786 * update a GUI or something at the same time) so it's OK if we block
1787 * trying to read from the pipe.
1789 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
1790 * wrong (but I leave it there in case I am...).
1793 #ifdef USE_TSHARK_SELECT
1795 FD_SET(pipe_input.source, &readfds);
1798 loop_running = TRUE;
1800 while (loop_running)
1802 #ifdef USE_TSHARK_SELECT
1803 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
1809 } else if (ret == 1) {
1811 /* Call the real handler */
1812 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
1813 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
1816 #ifdef USE_TSHARK_SELECT
1825 /* XXX - move the call to main_window_update() out of capture_sync.c */
1826 /* dummy for capture_sync.c to make linker happy */
1827 void main_window_update(void)
1831 /* XXX - move the call to simple_dialog() out of capture_sync.c */
1832 #include "simple_dialog.h"
1834 /* capture_sync.c want's to tell us an error */
1835 gpointer simple_dialog(ESD_TYPE_E type _U_, gint btn_mask _U_,
1836 const gchar *msg_format, ...)
1840 /* XXX - do we need to display buttons and alike? */
1841 va_start(ap, msg_format);
1842 fprintf(stderr, "tshark: ");
1843 vfprintf(stderr, msg_format, ap);
1844 fprintf(stderr, "\n");
1851 /* capture child detected an error */
1853 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
1855 cmdarg_err("%s", error_msg);
1856 cmdarg_err_cont("%s", secondary_error_msg);
1860 /* capture child detected an capture filter related error */
1862 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
1864 dfilter_t *rfcode = NULL;
1867 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
1869 "Invalid capture filter: \"%s\"!\n"
1871 "That string looks like a valid display filter; however, it isn't a valid\n"
1872 "capture filter (%s).\n"
1874 "Note that display filters and capture filters don't have the same syntax,\n"
1875 "so you can't use most display filter expressions as capture filters.\n"
1877 "See the User's Guide for a description of the capture filter syntax.",
1878 capture_opts->cfilter, error_message);
1879 dfilter_free(rfcode);
1882 "Invalid capture filter: \"%s\"!\n"
1884 "That string isn't a valid capture filter (%s).\n"
1885 "See the User's Guide for a description of the capture filter syntax.",
1886 capture_opts->cfilter, error_message);
1891 /* capture child tells us we have a new (or the first) capture file */
1893 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
1895 gboolean is_tempfile;
1899 if(capture_opts->state == CAPTURE_PREPARING) {
1900 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
1902 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
1904 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
1906 capture_opts->cf = &cfile;
1908 /* free the old filename */
1909 if(capture_opts->save_file != NULL) {
1910 /* we start a new capture file, close the old one (if we had one before) */
1911 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
1912 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
1913 wtap_close(((capture_file *) capture_opts->cf)->wth);
1916 g_free(capture_opts->save_file);
1917 is_tempfile = FALSE;
1919 /* we didn't had a save_file before, must be a tempfile */
1923 /* save the new filename */
1924 capture_opts->save_file = g_strdup(new_file);
1926 /* if we are in real-time mode, open the new file now */
1928 /* Attempt to open the capture file and set up to read from it. */
1929 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
1933 /* Don't unlink (delete) the save file - leave it around,
1934 for debugging purposes. */
1935 g_free(capture_opts->save_file);
1936 capture_opts->save_file = NULL;
1942 capture_opts->state = CAPTURE_RUNNING;
1948 /* capture child tells us we have new packets to read */
1950 capture_input_new_packets(capture_options *capture_opts, int to_read)
1956 capture_file *cf = capture_opts->cf;
1961 * Prevent a SIGINFO handler from writing to stdout while we're
1962 * doing so; instead, have it just set a flag telling us to print
1963 * that information when we're done.
1966 #endif /* SIGINFO */
1969 while (to_read-- && cf->wth) {
1970 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
1972 /* read from file failed, tell the capture child to stop */
1973 sync_pipe_stop(capture_opts);
1974 wtap_close(cf->wth);
1977 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
1978 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth));
1981 /* packet sucessfully read and gone through the "Read Filter" */
1987 * Dumpcap's doing all the work; we're not doing any dissection.
1988 * Count all the packets it wrote.
1990 packet_count += to_read;
1993 if (print_packet_counts) {
1994 /* We're printing packet counts. */
1995 if (packet_count != 0) {
1996 fprintf(stderr, "\r%u ", packet_count);
1997 /* stderr could be line buffered */
2004 * Allow SIGINFO handlers to write.
2009 * If a SIGINFO handler asked us to write out capture counts, do so.
2013 #endif /* SIGINFO */
2020 /* XXX - if we use sigaction, this doesn't have to be done.
2021 (Yes, this isn't necessary on BSD, but just in case a system
2022 where "signal()" has AT&T semantics adopts SIGINFO....) */
2023 signal(SIGINFO, report_counts_siginfo);
2024 #endif /* SIGINFO */
2026 if (!print_packet_counts) {
2027 /* Report the count only if we aren't printing a packet count
2028 as packets arrive. */
2029 fprintf(stderr, "%u packets captured\n", packet_count);
2032 infoprint = FALSE; /* we just reported it */
2033 #endif /* SIGINFO */
2038 report_counts_siginfo(int signum _U_)
2040 int sav_errno = errno;
2041 /* If we've been told to delay printing, just set a flag asking
2042 that we print counts (if we're supposed to), otherwise print
2043 the count of packets captured (if we're supposed to). */
2050 #endif /* SIGINFO */
2053 /* capture child detected any packet drops? */
2055 capture_input_drops(capture_options *capture_opts _U_, int dropped)
2057 if (print_packet_counts) {
2058 /* We're printing packet counts to stderr.
2059 Send a newline so that we move to the line after the packet count. */
2060 fprintf(stderr, "\n");
2064 /* We're printing packet counts to stderr.
2065 Send a newline so that we move to the line after the packet count. */
2066 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2071 /* capture child closed its side of the pipe, do the required cleanup */
2073 capture_input_closed(capture_options *capture_opts)
2075 if (!print_packet_counts) {
2076 /* Report the count only if we aren't printing a packet count
2077 as packets arrive. */
2078 fprintf(stderr, "%u packets captured\n", packet_count);
2081 /*printf("capture_input_closed\n");*/
2083 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2084 wtap_close(((capture_file *) capture_opts->cf)->wth);
2086 #ifdef USE_BROKEN_G_MAIN_LOOP
2087 /*g_main_loop_quit(loop);*/
2090 loop_running = FALSE;
2099 capture_cleanup(DWORD ctrltype _U_)
2101 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2102 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2103 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2104 like SIGTERM at least when the machine's shutting down.
2106 For now, we handle them all as indications that we should clean up
2107 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2110 However, as handlers run in a new thread, we can't just longjmp
2111 out; we have to set "ld.go" to FALSE, and must return TRUE so that
2112 no other handler - such as one that would terminate the process -
2115 XXX - for some reason, typing ^C to TShark, if you run this in
2116 a Cygwin console window in at least some versions of Cygwin,
2117 causes TShark to terminate immediately; this routine gets
2118 called, but the main loop doesn't get a chance to run and
2119 exit cleanly, at least if this is compiled with Microsoft Visual
2120 C++ (i.e., it's a property of the Cygwin console window or Bash;
2121 it happens if TShark is not built with Cygwin - for all I know,
2122 building it with Cygwin may make the problem go away). */
2124 /* tell the capture child to stop */
2125 sync_pipe_stop(&capture_opts);
2127 /* don't stop our own loop already here, otherwise status messages and
2128 * cleanup wouldn't be done properly. The child will indicate the stop of
2129 * everything by calling capture_input_closed() later */
2135 capture_cleanup(int signum _U_)
2137 /* tell the capture child to stop */
2138 sync_pipe_stop(&capture_opts);
2141 #endif /* HAVE_LIBPCAP */
2144 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2145 int max_packet_count, gint64 max_byte_count)
2148 int snapshot_length;
2153 char *save_file_string = NULL;
2155 linktype = wtap_file_encap(cf->wth);
2156 if (save_file != NULL) {
2157 /* Get a string that describes what we're writing to */
2158 save_file_string = output_file_description(save_file);
2160 /* Set up to write to the capture file. */
2161 snapshot_length = wtap_snapshot_length(cf->wth);
2162 if (snapshot_length == 0) {
2163 /* Snapshot length of input file not known. */
2164 snapshot_length = WTAP_MAX_PACKET_SIZE;
2166 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2167 FALSE /* compressed */, &err);
2170 /* We couldn't set up to write to the capture file. */
2173 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2174 cmdarg_err("Capture files can't be written in that format.");
2177 case WTAP_ERR_UNSUPPORTED_ENCAP:
2178 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2179 cmdarg_err("The capture file being read can't be written in "
2183 case WTAP_ERR_CANT_OPEN:
2184 cmdarg_err("The %s couldn't be created for some "
2185 "unknown reason.", save_file_string);
2188 case WTAP_ERR_SHORT_WRITE:
2189 cmdarg_err("A full header couldn't be written to the %s.",
2194 cmdarg_err("The %s could not be created: %s.", save_file_string,
2195 wtap_strerror(err));
2201 if (print_packet_info) {
2202 if (!write_preamble(cf)) {
2204 show_print_file_io_error(err);
2210 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2211 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2212 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth))) {
2213 /* Either there's no read filtering or this packet passed the
2214 filter, so, if we're writing to a capture file, write
2217 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2218 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2220 /* Error writing to a capture file */
2221 show_capture_file_io_error(save_file, err, FALSE);
2222 wtap_dump_close(pdh, &err);
2226 /* Stop reading if we have the maximum number of packets;
2227 * note that a zero max_packet_count will never be matched
2228 * (unless we roll over the packet number?)
2230 if(max_packet_count == cf->count || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2231 err = 0; /* This is not an error */
2237 /* Print a message noting that the read failed somewhere along the line. */
2240 case WTAP_ERR_UNSUPPORTED_ENCAP:
2241 cmdarg_err("\"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2242 cf->filename, err_info);
2245 case WTAP_ERR_CANT_READ:
2246 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
2250 case WTAP_ERR_SHORT_READ:
2251 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
2255 case WTAP_ERR_BAD_RECORD:
2256 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
2257 cf->filename, err_info);
2261 cmdarg_err("An error occurred while reading \"%s\": %s.",
2262 cf->filename, wtap_strerror(err));
2265 if (save_file != NULL) {
2266 /* Now close the capture file. */
2267 if (!wtap_dump_close(pdh, &err))
2268 show_capture_file_io_error(save_file, err, TRUE);
2271 if (save_file != NULL) {
2272 /* Now close the capture file. */
2273 if (!wtap_dump_close(pdh, &err))
2274 show_capture_file_io_error(save_file, err, TRUE);
2276 if (print_packet_info) {
2277 if (!write_finale()) {
2279 show_print_file_io_error(err);
2286 wtap_close(cf->wth);
2289 if (save_file_string != NULL)
2290 g_free(save_file_string);
2296 fill_in_fdata(frame_data *fdata, capture_file *cf,
2297 const struct wtap_pkthdr *phdr, gint64 offset)
2302 fdata->num = cf->count;
2303 fdata->pkt_len = phdr->len;
2304 cum_bytes += phdr->len;
2305 fdata->cum_bytes = cum_bytes;
2306 fdata->cap_len = phdr->caplen;
2307 fdata->file_off = offset;
2308 fdata->lnk_t = phdr->pkt_encap;
2309 fdata->abs_ts.secs = phdr->ts.secs;
2310 fdata->abs_ts.nsecs = phdr->ts.nsecs;
2311 fdata->flags.passed_dfilter = 0;
2312 fdata->flags.encoding = CHAR_ASCII;
2313 fdata->flags.visited = 0;
2314 fdata->flags.marked = 0;
2315 fdata->flags.ref_time = 0;
2316 fdata->color_filter = NULL;
2318 /* If we don't have the time stamp of the first packet in the
2319 capture, it's because this is the first packet. Save the time
2320 stamp of this packet as the time stamp of the first packet. */
2321 if (nstime_is_unset(&first_ts)) {
2322 first_ts = fdata->abs_ts;
2325 /* If we don't have the time stamp of the previous captured packet,
2326 it's because this is the first packet. Save the time
2327 stamp of this packet as the time stamp of the previous captured
2329 if (nstime_is_unset(&prev_cap_ts)) {
2330 prev_cap_ts = fdata->abs_ts;
2333 /* Get the time elapsed between the first packet and this packet. */
2334 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2336 /* If it's greater than the current elapsed time, set the elapsed time
2337 to it (we check for "greater than" so as not to be confused by
2338 time moving backwards). */
2339 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2340 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2341 cf->elapsed_time = fdata->rel_ts;
2344 /* Get the time elapsed between the previous displayed packet and
2346 if (nstime_is_unset(&prev_dis_ts))
2347 nstime_set_zero(&fdata->del_dis_ts);
2349 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
2351 /* Get the time elapsed between the previous captured packet and
2353 nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
2354 prev_cap_ts = fdata->abs_ts;
2357 /* Free up all data attached to a "frame_data" structure. */
2359 clear_fdata(frame_data *fdata)
2362 g_slist_free(fdata->pfd);
2366 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2367 union wtap_pseudo_header *pseudo_header, const guchar *pd)
2370 gboolean create_proto_tree;
2371 epan_dissect_t *edt;
2374 /* Count this packet. */
2377 /* If we're going to print packet information, or we're going to
2378 run a read filter, or we're going to process taps, set up to
2379 do a dissection and do so. */
2380 if (do_dissection) {
2381 fill_in_fdata(&fdata, cf, whdr, offset);
2383 if (print_packet_info) {
2384 /* Grab any resolved addresses */
2386 if (g_resolv_flags) {
2387 host_name_lookup_process(NULL);
2392 if (cf->rfcode || verbose || num_tap_filters!=0)
2393 create_proto_tree = TRUE;
2395 create_proto_tree = FALSE;
2396 /* The protocol tree will be "visible", i.e., printed, only if we're
2397 printing packet details, which is true if we're printing stuff
2398 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2400 edt = epan_dissect_new(create_proto_tree, print_packet_info && verbose);
2402 /* If we're running a read filter, prime the epan_dissect_t with that
2405 epan_dissect_prime_dfilter(edt, cf->rfcode);
2407 tap_queue_init(edt);
2409 /* We only need the columns if we're printing packet info but we're
2410 *not* verbose; in verbose mode, we print the protocol tree, not
2411 the protocol summary. */
2412 epan_dissect_run(edt, pseudo_header, pd, &fdata,
2413 (print_packet_info && !verbose) ? &cf->cinfo : NULL);
2415 tap_push_tapped_queue(edt);
2417 /* Run the read filter if we have one. */
2419 passed = dfilter_apply_edt(cf->rfcode, edt);
2423 /* We're not running a display filter and we're not printing any
2424 packet information, so we don't need to do a dissection, and all
2425 packets are processed. */
2431 /* Keep the time of the current packet if the packet passed
2432 the read filter so that the delta time since last displayed
2433 packet can be calculated */
2434 prev_dis_ts = fdata.abs_ts;
2436 /* Process this packet. */
2437 if (print_packet_info) {
2438 /* We're printing packet information; print the information for
2440 print_packet(cf, edt);
2442 /* The ANSI C standard does not appear to *require* that a line-buffered
2443 stream be flushed to the host environment whenever a newline is
2444 written, it just says that, on such a stream, characters "are
2445 intended to be transmitted to or from the host environment as a
2446 block when a new-line character is encountered".
2448 The Visual C++ 6.0 C implementation doesn't do what is intended;
2449 even if you set a stream to be line-buffered, it still doesn't
2450 flush the buffer at the end of every line.
2452 So, if the "-l" flag was specified, we flush the standard output
2453 at the end of a packet. This will do the right thing if we're
2454 printing packet summary lines, and, as we print the entire protocol
2455 tree for a single packet without waiting for anything to happen,
2456 it should be as good as line-buffered mode if we're printing
2457 protocol trees. (The whole reason for the "-l" flag in either
2458 tcpdump or TShark is to allow the output of a live capture to
2459 be piped to a program or script and to have that script see the
2460 information for the packet as soon as it's printed, rather than
2461 having to wait until a standard I/O buffer fills up. */
2465 if (ferror(stdout)) {
2466 show_print_file_io_error(errno);
2472 if (do_dissection) {
2473 epan_dissect_free(edt);
2474 clear_fdata(&fdata);
2480 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
2482 char *save_file_string;
2484 save_file_string = output_file_description(fname);
2489 cmdarg_err("Not all the packets could be written to the %s because there is "
2490 "no space left on the file system.",
2496 cmdarg_err("Not all the packets could be written to the %s because you are "
2497 "too close to, or over your disk quota.",
2502 case WTAP_ERR_CANT_CLOSE:
2503 cmdarg_err("The %s couldn't be closed for some unknown reason.",
2507 case WTAP_ERR_SHORT_WRITE:
2508 cmdarg_err("Not all the packets could be written to the %s.",
2514 cmdarg_err("The %s could not be closed: %s.", save_file_string,
2515 wtap_strerror(err));
2517 cmdarg_err("An error occurred while writing to the %s: %s.",
2518 save_file_string, wtap_strerror(err));
2522 g_free(save_file_string);
2526 write_preamble(capture_file *cf)
2528 switch (output_action) {
2531 return print_preamble(print_stream, cf ? cf->filename : NULL);
2536 write_pdml_preamble(stdout);
2538 write_psml_preamble(stdout);
2539 return !ferror(stdout);
2542 write_fields_preamble(output_fields, stdout);
2543 return !ferror(stdout);
2546 g_assert_not_reached();
2552 get_line_buf(size_t len)
2554 static char *line_bufp = NULL;
2555 static size_t line_buf_len = 256;
2556 size_t new_line_buf_len;
2558 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
2559 new_line_buf_len *= 2)
2561 if (line_bufp == NULL) {
2562 line_buf_len = new_line_buf_len;
2563 line_bufp = g_malloc(line_buf_len + 1);
2565 if (new_line_buf_len > line_buf_len) {
2566 line_buf_len = new_line_buf_len;
2567 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
2574 print_columns(capture_file *cf)
2581 line_bufp = get_line_buf(256);
2584 for (i = 0; i < cf->cinfo.num_cols; i++) {
2585 switch (cf->cinfo.col_fmt[i]) {
2589 * Don't print this if we're doing a live capture from a network
2590 * interface - if we're doing a live capture, you won't be
2591 * able to look at the capture in the future (it's not being
2592 * saved anywhere), so the frame numbers are unlikely to be
2595 * (XXX - it might be nice to be able to save and print at
2596 * the same time, sort of like an "Update list of packets
2597 * in real time" capture in Wireshark.)
2599 if (capture_opts.iface != NULL)
2602 column_len = strlen(cf->cinfo.col_data[i]);
2605 line_bufp = get_line_buf(buf_offset + column_len);
2606 sprintf(line_bufp + buf_offset, "%3s", cf->cinfo.col_data[i]);
2612 case COL_ABS_DATE_TIME: /* XXX - wider */
2613 column_len = strlen(cf->cinfo.col_data[i]);
2614 if (column_len < 10)
2616 line_bufp = get_line_buf(buf_offset + column_len);
2617 sprintf(line_bufp + buf_offset, "%10s", cf->cinfo.col_data[i]);
2623 case COL_DEF_DL_SRC:
2624 case COL_RES_DL_SRC:
2625 case COL_UNRES_DL_SRC:
2626 case COL_DEF_NET_SRC:
2627 case COL_RES_NET_SRC:
2628 case COL_UNRES_NET_SRC:
2629 column_len = strlen(cf->cinfo.col_data[i]);
2630 if (column_len < 12)
2632 line_bufp = get_line_buf(buf_offset + column_len);
2633 sprintf(line_bufp + buf_offset, "%12s", cf->cinfo.col_data[i]);
2639 case COL_DEF_DL_DST:
2640 case COL_RES_DL_DST:
2641 case COL_UNRES_DL_DST:
2642 case COL_DEF_NET_DST:
2643 case COL_RES_NET_DST:
2644 case COL_UNRES_NET_DST:
2645 column_len = strlen(cf->cinfo.col_data[i]);
2646 if (column_len < 12)
2648 line_bufp = get_line_buf(buf_offset + column_len);
2649 sprintf(line_bufp + buf_offset, "%-12s", cf->cinfo.col_data[i]);
2653 column_len = strlen(cf->cinfo.col_data[i]);
2654 line_bufp = get_line_buf(buf_offset + column_len);
2655 strcat(line_bufp + buf_offset, cf->cinfo.col_data[i]);
2658 buf_offset += column_len;
2659 if (i != cf->cinfo.num_cols - 1) {
2661 * This isn't the last column, so we need to print a
2662 * separator between this column and the next.
2664 * If we printed a network source and are printing a
2665 * network destination of the same type next, separate
2666 * them with "->"; if we printed a network destination
2667 * and are printing a network source of the same type
2668 * next, separate them with "<-"; otherwise separate them
2671 * We add enough space to the buffer for " <- " or " -> ",
2672 * even if we're only adding " ".
2674 line_bufp = get_line_buf(buf_offset + 4);
2675 switch (cf->cinfo.col_fmt[i]) {
2680 switch (cf->cinfo.col_fmt[i + 1]) {
2685 strcat(line_bufp + buf_offset, " -> ");
2690 strcat(line_bufp + buf_offset, " ");
2696 case COL_DEF_DL_SRC:
2697 case COL_RES_DL_SRC:
2698 case COL_UNRES_DL_SRC:
2699 switch (cf->cinfo.col_fmt[i + 1]) {
2701 case COL_DEF_DL_DST:
2702 case COL_RES_DL_DST:
2703 case COL_UNRES_DL_DST:
2704 strcat(line_bufp + buf_offset, " -> ");
2709 strcat(line_bufp + buf_offset, " ");
2715 case COL_DEF_NET_SRC:
2716 case COL_RES_NET_SRC:
2717 case COL_UNRES_NET_SRC:
2718 switch (cf->cinfo.col_fmt[i + 1]) {
2720 case COL_DEF_NET_DST:
2721 case COL_RES_NET_DST:
2722 case COL_UNRES_NET_DST:
2723 strcat(line_bufp + buf_offset, " -> ");
2728 strcat(line_bufp + buf_offset, " ");
2737 switch (cf->cinfo.col_fmt[i + 1]) {
2742 strcat(line_bufp + buf_offset, " <- ");
2747 strcat(line_bufp + buf_offset, " ");
2753 case COL_DEF_DL_DST:
2754 case COL_RES_DL_DST:
2755 case COL_UNRES_DL_DST:
2756 switch (cf->cinfo.col_fmt[i + 1]) {
2758 case COL_DEF_DL_SRC:
2759 case COL_RES_DL_SRC:
2760 case COL_UNRES_DL_SRC:
2761 strcat(line_bufp + buf_offset, " <- ");
2766 strcat(line_bufp + buf_offset, " ");
2772 case COL_DEF_NET_DST:
2773 case COL_RES_NET_DST:
2774 case COL_UNRES_NET_DST:
2775 switch (cf->cinfo.col_fmt[i + 1]) {
2777 case COL_DEF_NET_SRC:
2778 case COL_RES_NET_SRC:
2779 case COL_UNRES_NET_SRC:
2780 strcat(line_bufp + buf_offset, " <- ");
2785 strcat(line_bufp + buf_offset, " ");
2792 strcat(line_bufp + buf_offset, " ");
2798 return print_line(print_stream, 0, line_bufp);
2802 print_packet(capture_file *cf, epan_dissect_t *edt)
2804 print_args_t print_args;
2807 /* Print the information in the protocol tree. */
2808 switch (output_action) {
2811 print_args.to_file = TRUE;
2812 print_args.format = print_format;
2813 print_args.print_summary = !verbose;
2814 print_args.print_hex = verbose && print_hex;
2815 print_args.print_formfeed = FALSE;
2816 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
2818 /* init the packet range */
2819 packet_range_init(&print_args.range);
2821 if (!proto_tree_print(&print_args, edt, print_stream))
2824 /* "print_hex_data()" will put out a leading blank line, as well
2825 as a trailing one; print one here, to separate the packets,
2826 only if "print_hex_data()" won't be called. */
2827 if (!print_line(print_stream, 0, ""))
2833 proto_tree_write_pdml(edt, stdout);
2835 return !ferror(stdout);
2837 proto_tree_write_fields(output_fields, edt, stdout);
2839 return !ferror(stdout);
2842 /* Just fill in the columns. */
2843 epan_dissect_fill_in_columns(edt);
2845 /* Now print them. */
2846 switch (output_action) {
2849 if (!print_columns(cf))
2854 proto_tree_write_psml(edt, stdout);
2855 return !ferror(stdout);
2856 case WRITE_FIELDS: /*No non-verbose "fields" format */
2857 g_assert_not_reached();
2862 if (!print_hex_data(print_stream, edt))
2864 if (!print_line(print_stream, 0, ""))
2873 switch (output_action) {
2876 return print_finale(print_stream);
2881 write_pdml_finale(stdout);
2883 write_psml_finale(stdout);
2884 return !ferror(stdout);
2887 write_fields_finale(output_fields, stdout);
2888 return !ferror(stdout);
2891 g_assert_not_reached();
2897 show_print_file_io_error(int err)
2902 cmdarg_err("Not all the packets could be printed because there is "
2903 "no space left on the file system.");
2908 cmdarg_err("Not all the packets could be printed because you are "
2909 "too close to, or over your disk quota.");
2914 cmdarg_err("An error occurred while printing packets: %s.",
2921 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
2925 static char errmsg_errno[1024+1];
2928 /* Wiretap error. */
2931 case WTAP_ERR_NOT_REGULAR_FILE:
2932 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
2935 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
2936 /* Seen only when opening a capture file for reading. */
2937 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
2940 case WTAP_ERR_UNSUPPORTED:
2941 /* Seen only when opening a capture file for reading. */
2942 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2943 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
2946 errmsg = errmsg_errno;
2949 case WTAP_ERR_CANT_WRITE_TO_PIPE:
2950 /* Seen only when opening a capture file for writing. */
2951 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2952 "The file \"%%s\" is a pipe, and %s capture files can't be "
2953 "written to a pipe.", wtap_file_type_string(file_type));
2954 errmsg = errmsg_errno;
2957 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2958 /* Seen only when opening a capture file for writing. */
2959 errmsg = "TShark doesn't support writing capture files in that format.";
2962 case WTAP_ERR_UNSUPPORTED_ENCAP:
2964 errmsg = "TShark can't save this capture in that format.";
2966 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2967 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
2970 errmsg = errmsg_errno;
2974 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2976 errmsg = "TShark can't save this capture in that format.";
2978 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
2981 case WTAP_ERR_BAD_RECORD:
2982 /* Seen only when opening a capture file for reading. */
2983 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2984 "The file \"%%s\" appears to be damaged or corrupt.\n"
2987 errmsg = errmsg_errno;
2990 case WTAP_ERR_CANT_OPEN:
2992 errmsg = "The file \"%s\" could not be created for some unknown reason.";
2994 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
2997 case WTAP_ERR_SHORT_READ:
2998 errmsg = "The file \"%s\" appears to have been cut short"
2999 " in the middle of a packet or other data.";
3002 case WTAP_ERR_SHORT_WRITE:
3003 errmsg = "A full header couldn't be written to the file \"%s\".";
3007 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
3008 "The file \"%%s\" could not be %s: %s.",
3009 for_writing ? "created" : "opened",
3010 wtap_strerror(err));
3011 errmsg = errmsg_errno;
3015 errmsg = file_open_error_message(err, for_writing);
3020 * Open/create errors are reported with an console message in TShark.
3023 open_failure_message(const char *filename, int err, gboolean for_writing)
3025 fprintf(stderr, "tshark: ");
3026 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3027 fprintf(stderr, "\n");
3031 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3035 char err_msg[2048+1];
3037 wth = wtap_open_offline(fname, err, &err_info, FALSE);
3041 /* The open succeeded. Fill in the information for this file. */
3043 /* Initialize all data structures used for dissection. */
3047 cf->f_datalen = 0; /* not used, but set it anyway */
3049 /* Set the file name because we need it to set the follow stream filter.
3050 XXX - is that still true? We need it for other reasons, though,
3052 cf->filename = g_strdup(fname);
3054 /* Indicate whether it's a permanent or temporary file. */
3055 cf->is_tempfile = is_tempfile;
3057 /* If it's a temporary capture buffer file, mark it as not saved. */
3058 cf->user_saved = !is_tempfile;
3060 cf->cd_t = wtap_file_type(cf->wth);
3062 cf->drops_known = FALSE;
3064 cf->snap = wtap_snapshot_length(cf->wth);
3065 if (cf->snap == 0) {
3066 /* Snapshot length not known. */
3067 cf->has_snap = FALSE;
3068 cf->snap = WTAP_MAX_PACKET_SIZE;
3070 cf->has_snap = TRUE;
3071 nstime_set_zero(&cf->elapsed_time);
3072 nstime_set_unset(&first_ts);
3073 nstime_set_unset(&prev_dis_ts);
3074 nstime_set_unset(&prev_cap_ts);
3079 g_snprintf(err_msg, sizeof err_msg,
3080 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3081 cmdarg_err("%s", err_msg);
3087 * General errors are reported with an console message in TShark.
3090 failure_message(const char *msg_format, va_list ap)
3092 fprintf(stderr, "tshark: ");
3093 vfprintf(stderr, msg_format, ap);
3094 fprintf(stderr, "\n");
3098 * Read errors are reported with an console message in TShark.
3101 read_failure_message(const char *filename, int err)
3103 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3104 filename, strerror(err));
3108 * Report an error in command-line arguments.
3111 cmdarg_err(const char *fmt, ...)
3116 fprintf(stderr, "tshark: ");
3117 vfprintf(stderr, fmt, ap);
3118 fprintf(stderr, "\n");
3123 * Report additional information for an error in command-line arguments.
3126 cmdarg_err_cont(const char *fmt, ...)
3131 vfprintf(stderr, fmt, ap);
3132 fprintf(stderr, "\n");