3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
10 * Copyright 1998 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 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 <wsutil/privileges.h>
68 #include <epan/timestamp.h>
69 #include <epan/packet.h>
71 #include "disabled_protos.h"
72 #include <epan/prefs.h>
73 #include <epan/column.h>
75 #include <epan/addr_resolv.h>
77 #include "clopts_common.h"
78 #include "cmdarg_err.h"
79 #include "version_info.h"
80 #include <epan/plugins.h>
82 #include <epan/epan_dissect.h>
84 #include <epan/stat_cmd_args.h>
85 #include <epan/timestamp.h>
86 #include <epan/ex-opt.h>
89 #include "capture_ui_utils.h"
91 #include "capture-pcap-util.h"
93 #include "capture-wpcap.h"
94 #include "capture_errs.h"
96 #include "capture_sync.h"
97 #endif /* HAVE_LIBPCAP */
99 #include <epan/funnel.h>
103 * This is the template for the decode as option; it is shared between the
104 * various functions that output the usage for this parameter.
106 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
108 static guint32 cum_bytes;
109 static nstime_t first_ts;
110 static nstime_t prev_dis_ts;
111 static nstime_t prev_cap_ts;
113 static gboolean print_packet_info; /* TRUE if we're to print packet information */
116 * The way the packet decode is to be written.
119 WRITE_TEXT, /* summary or detail text */
120 WRITE_XML, /* PDML or PSML */
121 WRITE_FIELDS /* User defined list of fields */
122 /* Add CSV and the like here */
125 static output_action_e output_action;
126 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
127 static gboolean verbose;
128 static gboolean print_hex;
129 static gboolean line_buffered;
131 static print_format_e print_format = PR_FMT_TEXT;
132 static print_stream_t *print_stream;
134 static output_fields_t* output_fields = NULL;
137 * Standard secondary message for unexpected errors.
139 static const char please_report[] =
140 "Please report this to the Wireshark developers";
144 * TRUE if we're to print packet counts to keep track of captured packets.
146 static gboolean print_packet_counts;
149 static capture_options global_capture_opts;
152 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
153 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
156 static int capture(void);
157 static void report_counts(void);
159 static BOOL WINAPI capture_cleanup(DWORD);
161 static void capture_cleanup(int);
163 static void report_counts_siginfo(int);
166 #endif /* HAVE_LIBPCAP */
168 static int load_cap_file(capture_file *, char *, int, int, gint64);
169 static gboolean process_packet(capture_file *cf, gint64 offset,
170 const struct wtap_pkthdr *whdr, union wtap_pseudo_header *pseudo_header,
171 const guchar *pd, gboolean filtering_tap_listeners, guint tap_flags);
172 static void show_capture_file_io_error(const char *, int, gboolean);
173 static void show_print_file_io_error(int err);
174 static gboolean write_preamble(capture_file *cf);
175 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
176 static gboolean write_finale(void);
177 static const char *cf_open_error_message(int err, gchar *err_info,
178 gboolean for_writing, int file_type);
180 static void open_failure_message(const char *filename, int err,
181 gboolean for_writing);
182 static void failure_message(const char *msg_format, va_list ap);
183 static void read_failure_message(const char *filename, int err);
184 static void write_failure_message(const char *filename, int err);
189 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
191 g_assert_not_reached();
194 static void list_capture_types(void) {
197 fprintf(stderr, "editcap: The available capture file types for \"F\":\n");
198 for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
199 if (wtap_dump_can_open(i))
200 fprintf(stderr, " %s - %s\n",
201 wtap_file_type_short_string(i), wtap_file_type_string(i));
206 print_usage(gboolean print_ver)
213 "TShark " VERSION "%s\n"
214 "Dump and analyze network traffic.\n"
215 "See http://www.wireshark.org for more information.\n"
218 wireshark_svnversion, get_copyright_info());
222 fprintf(output, "\n");
223 fprintf(output, "Usage: tshark [options] ...\n");
224 fprintf(output, "\n");
227 fprintf(output, "Capture interface:\n");
228 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
229 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
230 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
231 fprintf(output, " -p don't capture in promiscuous mode\n");
233 fprintf(output, " -B <buffer size> size of kernel buffer (def: 1MB)\n");
235 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
236 fprintf(output, " -D print list of interfaces and exit\n");
237 fprintf(output, " -L print list of link-layer types of iface and exit\n");
238 fprintf(output, "\n");
239 fprintf(output, "Capture stop conditions:\n");
240 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
241 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
242 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
243 fprintf(output, " files:NUM - stop after NUM files\n");
244 /*fprintf(output, "\n");*/
245 fprintf(output, "Capture output:\n");
246 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
247 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
248 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
249 #endif /* HAVE_LIBPCAP */
251 /*fprintf(output, "\n");*/
252 fprintf(output, "Input file:\n");
253 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
255 fprintf(output, "\n");
256 fprintf(output, "Processing:\n");
257 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
258 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
259 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
260 fprintf(output, " -d %s ...\n", decode_as_arg_template);
261 fprintf(output, " \"Decode As\", see the man page for details\n");
262 fprintf(output, " Example: tcp.port==8888,http\n");
264 /*fprintf(output, "\n");*/
265 fprintf(output, "Output:\n");
266 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
267 fprintf(output, " (or to the standard output for \"-\")\n");
268 fprintf(output, " -C <config profile> start with specified configuration profile\n");
269 fprintf(output, " -F <output file type> set the output file type, default is libpcap\n");
270 fprintf(output, " an empty \"-F\" option will list the file types\n");
271 fprintf(output, " -V add output of packet tree (Packet Details)\n");
272 fprintf(output, " -S display packets even when writing to a file\n");
273 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
274 fprintf(output, " -T pdml|ps|psml|text|fields\n");
275 fprintf(output, " format of text output (def: text)\n");
276 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port);\n");
277 fprintf(output, " this option can be repeated to print multiple fields\n");
278 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
279 fprintf(output, " header=y|n switch headers on and off\n");
280 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
281 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
282 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
283 fprintf(output, " -l flush standard output after each packet\n");
284 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
285 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
286 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
288 fprintf(output, "\n");
289 fprintf(output, "Miscellaneous:\n");
290 fprintf(output, " -h display this help and exit\n");
291 fprintf(output, " -v display version info and exit\n");
292 fprintf(output, " -o <name>:<value> ... override preference setting\n");
293 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
297 * For a dissector table, print on the stream described by output,
298 * its short name (which is what's used in the "-d" option) and its
302 display_dissector_table_names(const char *table_name, const char *ui_name,
305 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
309 * For a dissector handle, print on the stream described by output,
310 * the filter name (which is what's used in the "-d" option) and the full
311 * name for the protocol that corresponds to this handle.
314 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
317 const gchar* proto_filter_name;
318 const gchar* proto_ui_name;
320 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
322 if (proto_id != -1) {
323 proto_filter_name = proto_get_protocol_filter_name(proto_id);
324 proto_ui_name = proto_get_protocol_name(proto_id);
325 g_assert(proto_filter_name != NULL);
326 g_assert(proto_ui_name != NULL);
328 fprintf((FILE *)output, "\t%s (%s)\n",
335 * The protocol_name_search structure is used by find_protocol_name_func()
336 * to pass parameters and store results
338 struct protocol_name_search{
339 gchar *searched_name; /* Protocol filter name we are looking for */
340 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
341 guint nb_match; /* How many dissectors matched searched_name */
343 typedef struct protocol_name_search *protocol_name_search_t;
346 * This function parses all dissectors associated with a table to find the
347 * one whose protocol has the specified filter name. It is called
348 * as a reference function in a call to dissector_table_foreach_handle.
349 * The name we are looking for, as well as the results, are stored in the
350 * protocol_name_search struct pointed to by user_data.
351 * If called using dissector_table_foreach_handle, we actually parse the
352 * whole list of dissectors.
355 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
359 const gchar *protocol_filter_name;
360 protocol_name_search_t search_info;
364 search_info = (protocol_name_search_t)user_data;
366 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
367 if (proto_id != -1) {
368 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
369 g_assert(protocol_filter_name != NULL);
370 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
372 if (search_info->nb_match == 0) {
373 /* Record this handle only if this is the first match */
374 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
376 search_info->nb_match++;
382 * Print all layer type names supported.
383 * We send the output to the stream described by the handle output.
387 fprint_all_layer_types(FILE *output)
390 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output);
394 * Print all protocol names supported for a specific layer type.
395 * table_name contains the layer type name in which the search is performed.
396 * We send the output to the stream described by the handle output.
400 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
403 dissector_table_foreach_handle(table_name,
404 display_dissector_names,
409 * The function below parses the command-line parameters for the decode as
410 * feature (a string pointer by cl_param).
411 * It checks the format of the command-line, searches for a matching table
412 * and dissector. If a table/dissector match is not found, we display a
413 * summary of the available tables/dissectors (on stderr) and return FALSE.
414 * If everything is fine, we get the "Decode as" preference activated,
415 * then we return TRUE.
418 add_decode_as(const gchar *cl_param)
422 gchar *decoded_param;
423 gchar *remaining_param;
425 gchar *dissector_str;
426 dissector_handle_t dissector_matching;
427 dissector_table_t table_matching;
428 ftenum_t dissector_table_selector_type;
429 struct protocol_name_search user_protocol_name;
431 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
434 decoded_param = g_strdup(cl_param);
435 g_assert(decoded_param);
438 /* The lines below will parse this string (modifying it) to extract all
439 necessary information. Note that decoded_param is still needed since
440 strings are not copied - we just save pointers. */
442 /* This section extracts a layer type (table_name) from decoded_param */
443 table_name = decoded_param; /* Layer type string starts from beginning */
445 remaining_param = strchr(table_name, '=');
446 if (remaining_param == NULL) {
447 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
448 /* If the argument does not follow the template, carry on anyway to check
449 if the table name is at least correct. If remaining_param is NULL,
450 we'll exit anyway further down */
453 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
456 /* Remove leading and trailing spaces from the table name */
457 while ( table_name[0] == ' ' )
459 while ( table_name[strlen(table_name) - 1] == ' ' )
460 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
462 /* The following part searches a table matching with the layer type specified */
463 table_matching = NULL;
465 /* Look for the requested table */
466 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
467 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
470 table_matching = find_dissector_table(table_name);
471 if (!table_matching) {
472 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
476 if (!table_matching) {
477 /* Display a list of supported layer types to help the user, if the
478 specified layer type was not found */
479 cmdarg_err("Valid layer types are:");
480 fprint_all_layer_types(stderr);
482 if (remaining_param == NULL || !table_matching) {
483 /* Exit if the layer type was not found, or if no '=' separator was found
485 g_free(decoded_param);
489 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
490 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
493 remaining_param++; /* Move to the second '=' */
494 *remaining_param = '\0'; /* Remove the second '=' */
496 remaining_param++; /* Position after the layer type string */
498 /* This section extracts a selector value (selector_str) from decoded_param */
500 selector_str = remaining_param; /* Next part starts with the selector number */
502 remaining_param = strchr(selector_str, ',');
503 if (remaining_param == NULL) {
504 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
505 /* If the argument does not follow the template, carry on anyway to check
506 if the selector value is at least correct. If remaining_param is NULL,
507 we'll exit anyway further down */
510 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
513 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
515 switch (dissector_table_selector_type) {
521 /* The selector for this table is an unsigned number. Parse it as such.
522 There's no need to remove leading and trailing spaces from the
523 selector number string, because sscanf will do that for us. */
524 if ( sscanf(selector_str, "%u", &selector) != 1 ) {
525 cmdarg_err("Invalid selector number \"%s\"", selector_str);
526 g_free(decoded_param);
534 /* The selector for this table is a string. */
538 /* There are currently no dissector tables with any types other
539 than the ones listed above. */
540 g_assert_not_reached();
543 if (remaining_param == NULL) {
544 /* Exit if no ',' separator was found (see above) */
545 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
546 fprint_all_protocols_for_layer_types(stderr, table_name);
547 g_free(decoded_param);
551 remaining_param++; /* Position after the selector number string */
553 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
555 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
557 /* Remove leading and trailing spaces from the dissector name */
558 while ( dissector_str[0] == ' ' )
560 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
561 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
563 dissector_matching = NULL;
565 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
566 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 */
567 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
570 user_protocol_name.nb_match = 0;
571 user_protocol_name.searched_name = dissector_str;
572 user_protocol_name.matched_handle = NULL;
574 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 */
576 if (user_protocol_name.nb_match != 0) {
577 dissector_matching = user_protocol_name.matched_handle;
578 if (user_protocol_name.nb_match > 1) {
579 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
583 /* OK, check whether the problem is that there isn't any such
584 protocol, or that there is but it's not specified as a protocol
585 that's valid for that dissector table.
586 Note, we don't exit here, but dissector_matching will remain NULL,
588 if (proto_get_id_by_filter_name(dissector_str) == -1) {
589 /* No such protocol */
590 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
592 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
593 dissector_str, table_name);
598 if (!dissector_matching) {
599 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
600 fprint_all_protocols_for_layer_types(stderr, table_name);
601 g_free(decoded_param);
605 /* This is the end of the code that parses the command-line options.
606 All information is now stored in the variables:
610 The above variables that are strings are still pointing to areas within
611 decoded_parm. decoded_parm thus still needs to be kept allocated in
612 until we stop needing these variables
613 decoded_param will be deallocated at each exit point of this function */
616 /* We now have a pointer to the handle for the requested dissector
617 (requested protocol) inside the variable dissector_matching */
618 switch (dissector_table_selector_type) {
624 /* The selector for this table is an unsigned number. */
625 dissector_change(table_name, selector, dissector_matching);
631 /* The selector for this table is a string. */
632 dissector_change_string(table_name, selector_str, dissector_matching);
636 /* There are currently no dissector tables with any types other
637 than the ones listed above. */
638 g_assert_not_reached();
640 g_free(decoded_param); /* "Decode As" rule has been succesfully added */
645 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
646 const gchar *message, gpointer user_data)
648 /* ignore log message, if log_level isn't interesting based
649 upon the console log preferences.
650 If the preferences haven't been loaded loaded yet, display the
653 The default console_log_level preference value is such that only
654 ERROR, CRITICAL and WARNING level messages are processed;
655 MESSAGE, INFO and DEBUG level messages are ignored.
657 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
658 ERROR and CRITICAL level messages so the current code is a behavioral
659 change. The current behavior is the same as in Wireshark.
661 if((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
662 prefs.console_log_level != 0) {
666 g_log_default_handler(log_domain, log_level, message, user_data);
671 output_file_description(const char *fname)
673 char *save_file_string;
675 /* Get a string that describes what we're writing to */
676 if (strcmp(fname, "-") == 0) {
677 /* We're writing to the standard output */
678 save_file_string = g_strdup("standard output");
680 /* We're writing to a file with the name in save_file */
681 save_file_string = g_strdup_printf("file \"%s\"", fname);
683 return save_file_string;
687 print_current_user(void) {
688 gchar *cur_user, *cur_group;
689 if (started_with_special_privs()) {
690 cur_user = get_cur_username();
691 cur_group = get_cur_groupname();
692 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
693 cur_user, cur_group);
696 if (running_with_special_privs()) {
697 fprintf(stderr, " This could be dangerous.");
699 fprintf(stderr, "\n");
704 check_capture_privs(void) {
707 /* Warn the user if npf.sys isn't loaded. */
708 if (!npf_sys_is_running() && get_os_major_version() >= 6) {
709 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
710 "capturing or\nlisting interfaces.\n");
716 show_version(GString *comp_info_str, GString *runtime_info_str)
718 printf("TShark " VERSION "%s\n"
725 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
726 runtime_info_str->str);
730 main(int argc, char *argv[])
732 char *init_progfile_dir_error;
735 gboolean arg_error = FALSE;
741 char *gpf_path, *pf_path;
742 char *gdp_path, *dp_path;
743 int gpf_open_errno, gpf_read_errno;
744 int pf_open_errno, pf_read_errno;
745 int gdp_open_errno, gdp_read_errno;
746 int dp_open_errno, dp_read_errno;
749 gboolean list_link_layer_types = FALSE;
750 gboolean start_capture = FALSE;
753 gboolean capture_option_specified = FALSE;
755 gboolean quiet = FALSE;
756 int out_file_type = WTAP_FILE_PCAP;
757 gchar *cf_name = NULL, *rfilter = NULL;
758 #ifdef HAVE_PCAP_OPEN_DEAD
759 struct bpf_program fcode;
761 dfilter_t *rfcode = NULL;
764 GLogLevelFlags log_flags;
767 #define OPTSTRING_INIT "a:b:c:C:d:De:E:f:F:G:hi:K:lLnN:o:pqr:R:s:St:T:vVw:xX:y:z:"
770 #define OPTSTRING_WIN32 "B:"
772 #define OPTSTRING_WIN32 ""
775 #define OPTSTRING_WIN32 ""
776 #endif /* HAVE_LIBPCAP */
778 static const char optstring[] = OPTSTRING_INIT OPTSTRING_WIN32;
781 * Get credential information for later use.
783 get_credential_info();
786 * Attempt to get the pathname of the executable file.
788 init_progfile_dir_error = init_progfile_dir(argv[0], main);
789 if (init_progfile_dir_error != NULL) {
790 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
791 init_progfile_dir_error);
795 * In order to have the -X opts assigned before the wslua machine starts
796 * we need to call getopts before epan_init() gets called.
799 optind_initial = optind;
801 while ((opt = getopt(argc, argv, optstring)) != -1) {
803 case 'C': /* Configuration Profile */
804 if (profile_exists (optarg)) {
805 set_profile_name (optarg);
807 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
819 optind = optind_initial;
824 /** Send All g_log messages to our own handler **/
828 G_LOG_LEVEL_CRITICAL|
833 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
835 g_log_set_handler(NULL,
837 tshark_log_handler, NULL /* user_data */);
838 g_log_set_handler(LOG_DOMAIN_MAIN,
840 tshark_log_handler, NULL /* user_data */);
843 g_log_set_handler(LOG_DOMAIN_CAPTURE,
845 tshark_log_handler, NULL /* user_data */);
846 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
848 tshark_log_handler, NULL /* user_data */);
851 initialize_funnel_ops();
854 capture_opts_init(&global_capture_opts, &cfile);
857 timestamp_set_type(TS_RELATIVE);
858 timestamp_set_precision(TS_PREC_AUTO);
860 /* Register all dissectors; we must do this before checking for the
861 "-G" flag, as the "-G" flag dumps information registered by the
862 dissectors, and we must do it before we read the preferences, in
863 case any dissectors register preferences. */
864 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
865 failure_message, open_failure_message, read_failure_message,
866 write_failure_message);
868 /* Register all tap listeners; we do this before we parse the arguments,
869 as the "-z" argument can specify a registered tap. */
871 /* we register the plugin taps before the other taps because
872 stats_tree taps plugins will be registered as tap listeners
873 by stats_tree_stat.c and need to registered before that */
875 register_all_plugin_tap_listeners();
877 register_all_tap_listeners();
879 /* Now register the preferences for any non-dissector modules.
880 We must do that before we read the preferences as well. */
881 prefs_register_modules();
883 /* If invoked with the "-G" flag, we dump out information based on
884 the argument to the "-G" flag; if no argument is specified,
885 for backwards compatibility we dump out a glossary of display
888 XXX - we do this here, for now, to support "-G" with no arguments.
889 If none of our build or other processes uses "-G" with no arguments,
890 we can just process it with the other arguments. */
891 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
892 proto_initialize_all_prefixes();
895 proto_registrar_dump_fields(1);
897 if (strcmp(argv[2], "fields") == 0)
898 proto_registrar_dump_fields(1);
899 else if (strcmp(argv[2], "fields2") == 0)
900 proto_registrar_dump_fields(2);
901 else if (strcmp(argv[2], "fields3") == 0)
902 proto_registrar_dump_fields(3);
903 else if (strcmp(argv[2], "protocols") == 0)
904 proto_registrar_dump_protocols();
905 else if (strcmp(argv[2], "values") == 0)
906 proto_registrar_dump_values();
907 else if (strcmp(argv[2], "decodes") == 0)
908 dissector_dump_decodes();
909 else if (strcmp(argv[2], "defaultprefs") == 0)
911 else if (strcmp(argv[2], "currentprefs") == 0) {
912 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
913 &pf_open_errno, &pf_read_errno, &pf_path);
916 cmdarg_err("Invalid \"%s\" option for -G flag", argv[2]);
923 /* Set the C-language locale to the native environment. */
924 setlocale(LC_ALL, "");
926 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
927 &pf_open_errno, &pf_read_errno, &pf_path);
928 if (gpf_path != NULL) {
929 if (gpf_open_errno != 0) {
930 cmdarg_err("Can't open global preferences file \"%s\": %s.",
931 pf_path, strerror(gpf_open_errno));
933 if (gpf_read_errno != 0) {
934 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
935 pf_path, strerror(gpf_read_errno));
938 if (pf_path != NULL) {
939 if (pf_open_errno != 0) {
940 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
941 strerror(pf_open_errno));
943 if (pf_read_errno != 0) {
944 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
945 pf_path, strerror(pf_read_errno));
951 /* Set the name resolution code's flags from the preferences. */
952 g_resolv_flags = prefs->name_resolve;
954 /* Read the disabled protocols file. */
955 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
956 &dp_path, &dp_open_errno, &dp_read_errno);
957 if (gdp_path != NULL) {
958 if (gdp_open_errno != 0) {
959 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
960 gdp_path, strerror(gdp_open_errno));
962 if (gdp_read_errno != 0) {
963 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
964 gdp_path, strerror(gdp_read_errno));
968 if (dp_path != NULL) {
969 if (dp_open_errno != 0) {
971 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
972 strerror(dp_open_errno));
974 if (dp_read_errno != 0) {
976 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
977 strerror(dp_read_errno));
982 check_capture_privs();
984 init_cap_file(&cfile);
986 /* Print format defaults to this. */
987 print_format = PR_FMT_TEXT;
989 output_fields = output_fields_new();
991 /* Now get our args */
992 while ((opt = getopt(argc, argv, optstring)) != -1) {
994 case 'a': /* autostop criteria */
995 case 'b': /* Ringbuffer option */
996 case 'c': /* Capture x packets */
997 case 'f': /* capture filter */
998 case 'i': /* Use interface x */
999 case 'p': /* Don't capture in promiscuous mode */
1000 case 's': /* Set the snapshot (capture) length */
1001 case 'w': /* Write to capture file x */
1002 case 'y': /* Set the pcap data link type */
1004 case 'B': /* Buffer size */
1007 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1012 capture_option_specified = TRUE;
1017 /* Configuration profile settings were already processed just ignore them this time*/
1019 case 'd': /* Decode as rule */
1020 if (!add_decode_as(optarg))
1023 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1024 case 'K': /* Kerberos keytab file */
1025 read_keytab_file(optarg);
1028 case 'D': /* Print a list of capture devices and exit */
1030 status = capture_opts_list_interfaces(FALSE);
1033 capture_option_specified = TRUE;
1039 output_fields_add(output_fields, optarg);
1043 if(!output_fields_set_option(output_fields, optarg)) {
1044 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1045 output_fields_list_options(stderr);
1050 out_file_type = wtap_short_string_to_file_type(optarg);
1051 if (out_file_type < 0) {
1052 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1053 list_capture_types();
1057 case 'h': /* Print help and exit */
1061 case 'l': /* "Line-buffer" standard output */
1062 /* This isn't line-buffering, strictly speaking, it's just
1063 flushing the standard output after the information for
1064 each packet is printed; however, that should be good
1065 enough for all the purposes to which "-l" is put (and
1066 is probably actually better for "-V", as it does fewer
1069 See the comment in "process_packet()" for an explanation of
1070 why we do that, and why we don't just use "setvbuf()" to
1071 make the standard output line-buffered (short version: in
1072 Windows, "line-buffered" is the same as "fully-buffered",
1073 and the output buffer is only flushed when it fills up). */
1074 line_buffered = TRUE;
1076 case 'L': /* Print list of link-layer types and exit */
1078 list_link_layer_types = TRUE;
1080 capture_option_specified = TRUE;
1084 case 'n': /* No name resolution */
1085 g_resolv_flags = RESOLV_NONE;
1087 case 'N': /* Select what types of addresses/port #s to resolve */
1088 if (g_resolv_flags == RESOLV_ALL)
1089 g_resolv_flags = RESOLV_NONE;
1090 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
1091 if (badopt != '\0') {
1092 cmdarg_err("-N specifies unknown resolving option '%c';",
1094 cmdarg_err_cont( " Valid options are 'm', 'n', 't', and 'C'");
1098 case 'o': /* Override preference from command line */
1099 switch (prefs_set_pref(optarg)) {
1104 case PREFS_SET_SYNTAX_ERR:
1105 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1109 case PREFS_SET_NO_SUCH_PREF:
1110 case PREFS_SET_OBSOLETE:
1111 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1116 case 'q': /* Quiet */
1119 case 'r': /* Read capture file x */
1120 cf_name = g_strdup(optarg);
1122 case 'R': /* Read file filter */
1125 case 'S': /* show packets in real time */
1126 print_packet_info = TRUE;
1128 case 't': /* Time stamp type */
1129 if (strcmp(optarg, "r") == 0)
1130 timestamp_set_type(TS_RELATIVE);
1131 else if (strcmp(optarg, "a") == 0)
1132 timestamp_set_type(TS_ABSOLUTE);
1133 else if (strcmp(optarg, "ad") == 0)
1134 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
1135 else if (strcmp(optarg, "d") == 0)
1136 timestamp_set_type(TS_DELTA);
1137 else if (strcmp(optarg, "dd") == 0)
1138 timestamp_set_type(TS_DELTA_DIS);
1139 else if (strcmp(optarg, "e") == 0)
1140 timestamp_set_type(TS_EPOCH);
1142 cmdarg_err("Invalid time stamp type \"%s\"",
1144 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
1145 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
1149 case 'T': /* printing Type */
1150 if (strcmp(optarg, "text") == 0) {
1151 output_action = WRITE_TEXT;
1152 print_format = PR_FMT_TEXT;
1153 } else if (strcmp(optarg, "ps") == 0) {
1154 output_action = WRITE_TEXT;
1155 print_format = PR_FMT_PS;
1156 } else if (strcmp(optarg, "pdml") == 0) {
1157 output_action = WRITE_XML;
1159 } else if (strcmp(optarg, "psml") == 0) {
1160 output_action = WRITE_XML;
1162 } else if(strcmp(optarg, "fields") == 0) {
1163 output_action = WRITE_FIELDS;
1164 verbose = TRUE; /* Need full tree info */
1166 cmdarg_err("Invalid -T parameter.");
1167 cmdarg_err_cont("It must be \"ps\", \"text\", \"pdml\", \"psml\" or \"fields\".");
1171 case 'v': /* Show version and exit */
1173 GString *comp_info_str;
1174 GString *runtime_info_str;
1175 /* Assemble the compile-time version information string */
1176 comp_info_str = g_string_new("Compiled ");
1177 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
1179 /* Assemble the run-time version information string */
1180 runtime_info_str = g_string_new("Running ");
1181 get_runtime_version_info(runtime_info_str, NULL);
1182 show_version(comp_info_str, runtime_info_str);
1183 g_string_free(comp_info_str, TRUE);
1184 g_string_free(runtime_info_str, TRUE);
1188 case 'V': /* Verbose */
1191 case 'x': /* Print packet data in hex (and ASCII) */
1197 /* We won't call the init function for the stat this soon
1198 as it would disallow MATE's fields (which are registered
1199 by the preferences set callback) from being used as
1200 part of a tap filter. Instead, we just add the argument
1201 to a list of stat arguments. */
1202 if (!process_stat_cmd_arg(optarg)) {
1203 cmdarg_err("invalid -z argument.");
1204 cmdarg_err_cont(" -z argument must be one of :");
1205 list_stat_cmd_args();
1210 case '?': /* Bad flag - print usage message */
1213 list_capture_types();
1223 /* If we specified output fields, but not the output field type... */
1224 if(WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1225 cmdarg_err("Output fields were specified with \"-e\", "
1226 "but \"-Tfields\" was not specified.");
1228 } else if(WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1229 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1230 "specified with \"-e\".");
1235 /* If no capture filter or read filter has been specified, and there are
1236 still command-line arguments, treat them as the tokens of a capture
1237 filter (if no "-r" flag was specified) or a read filter (if a "-r"
1238 flag was specified. */
1239 if (optind < argc) {
1240 if (cf_name != NULL) {
1241 if (rfilter != NULL) {
1242 cmdarg_err("Read filters were specified both with \"-R\" "
1243 "and with additional command-line arguments");
1246 rfilter = get_args_as_string(argc, argv, optind);
1249 if (global_capture_opts.has_cfilter) {
1250 cmdarg_err("Capture filters were specified both with \"-f\""
1251 " and with additional command-line arguments");
1254 global_capture_opts.has_cfilter = TRUE;
1255 global_capture_opts.cfilter = get_args_as_string(argc, argv, optind);
1257 capture_option_specified = TRUE;
1263 if (!global_capture_opts.saving_to_file) {
1264 /* We're not saving the capture to a file; if "-q" wasn't specified,
1265 we should print packet information */
1267 print_packet_info = TRUE;
1269 /* We're saving to a file; if we're writing to the standard output.
1270 and we'll also be writing dissected packets to the standard
1271 output, reject the request. At best, we could redirect that
1272 to the standard error; we *can't* write both to the standard
1273 output and have either of them be useful. */
1274 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1275 cmdarg_err("You can't write both raw packet data and dissected packets"
1276 " to the standard output.");
1281 /* We're not saving the capture to a file; if "-q" wasn't specified,
1282 we should print packet information */
1284 print_packet_info = TRUE;
1287 #ifndef HAVE_LIBPCAP
1288 if (capture_option_specified)
1289 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1296 /* We don't support capture filters when reading from a capture file
1297 (the BPF compiler doesn't support all link-layer types that we
1298 support in capture files we read). */
1300 if (cf_name != NULL) {
1301 if (global_capture_opts.has_cfilter) {
1302 cmdarg_err("Only read filters, not capture filters, "
1303 "can be specified when reading a capture file.");
1310 if (output_action != WRITE_TEXT) {
1311 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1317 if (list_link_layer_types) {
1318 /* We're supposed to list the link-layer types for an interface;
1319 did the user also specify a capture file to be read? */
1321 /* Yes - that's bogus. */
1322 cmdarg_err("You can't specify -L and a capture file to be read.");
1325 /* No - did they specify a ring buffer option? */
1326 if (global_capture_opts.multi_files_on) {
1327 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1333 * "-r" was specified, so we're reading a capture file.
1334 * Capture options don't apply here.
1336 if (global_capture_opts.multi_files_on) {
1337 cmdarg_err("Multiple capture files requested, but "
1338 "a capture isn't being done.");
1341 if (global_capture_opts.has_file_duration) {
1342 cmdarg_err("Switching capture files after a time interval was specified, but "
1343 "a capture isn't being done.");
1346 if (global_capture_opts.has_ring_num_files) {
1347 cmdarg_err("A ring buffer of capture files was specified, but "
1348 "a capture isn't being done.");
1351 if (global_capture_opts.has_autostop_files) {
1352 cmdarg_err("A maximum number of capture files was specified, but "
1353 "a capture isn't being done.");
1357 /* Note: TShark now allows the restriction of a _read_ file by packet count
1358 * and byte count as well as a write file. Other autostop options remain valid
1359 * only for a write file.
1361 if (global_capture_opts.has_autostop_duration) {
1362 cmdarg_err("A maximum capture time was specified, but "
1363 "a capture isn't being done.");
1368 * "-r" wasn't specified, so we're doing a live capture.
1370 if (global_capture_opts.saving_to_file) {
1371 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1373 /* When capturing, we only support writing libpcap format. */
1374 if (out_file_type != WTAP_FILE_PCAP) {
1375 cmdarg_err("Live captures can only be saved in libpcap format.");
1378 if (global_capture_opts.multi_files_on) {
1379 /* Multiple-file mode doesn't work under certain conditions:
1380 a) it doesn't work if you're writing to the standard output;
1381 b) it doesn't work if you're writing to a pipe;
1383 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1384 cmdarg_err("Multiple capture files requested, but "
1385 "the capture is being written to the standard output.");
1388 if (global_capture_opts.output_to_pipe) {
1389 cmdarg_err("Multiple capture files requested, but "
1390 "the capture file is a pipe.");
1393 if (!global_capture_opts.has_autostop_filesize &&
1394 !global_capture_opts.has_file_duration) {
1395 cmdarg_err("Multiple capture files requested, but "
1396 "no maximum capture file size or duration was specified.");
1401 /* They didn't specify a "-w" flag, so we won't be saving to a
1402 capture file. Check for options that only make sense if
1403 we're saving to a file. */
1404 if (global_capture_opts.has_autostop_filesize) {
1405 cmdarg_err("Maximum capture file size specified, but "
1406 "capture isn't being saved to a file.");
1409 if (global_capture_opts.multi_files_on) {
1410 cmdarg_err("Multiple capture files requested, but "
1411 "the capture isn't being saved to a file.");
1420 /* Start windows sockets */
1421 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
1424 /* Notify all registered modules that have had any of their preferences
1425 changed either from one of the preferences file or from the command
1426 line that their preferences have changed. */
1429 /* At this point MATE will have registered its field array so we can
1430 have a tap filter with one of MATE's late-registered fields as part
1431 of the filter. We can now process all the "-z" arguments. */
1432 start_requested_stats();
1434 /* disabled protocols as per configuration file */
1435 if (gdp_path == NULL && dp_path == NULL) {
1436 set_disabled_protos_list();
1439 /* Build the column format array */
1440 build_column_format_array(&cfile.cinfo, prefs->num_cols, TRUE);
1443 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
1444 capture_opts_trim_ring_num_files(&global_capture_opts);
1447 if (rfilter != NULL) {
1448 if (!dfilter_compile(rfilter, &rfcode)) {
1449 cmdarg_err("%s", dfilter_error_msg);
1451 #ifdef HAVE_PCAP_OPEN_DEAD
1455 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
1457 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
1459 " Note: That display filter code looks like a valid capture filter;");
1461 " maybe you mixed them up?");
1470 cfile.rfcode = rfcode;
1472 if (print_packet_info) {
1473 /* If we're printing as text or PostScript, we have
1474 to create a print stream. */
1475 if (output_action == WRITE_TEXT) {
1476 switch (print_format) {
1479 print_stream = print_stream_text_stdio_new(stdout);
1483 print_stream = print_stream_ps_stdio_new(stdout);
1487 g_assert_not_reached();
1492 /* We have to dissect each packet if:
1494 we're printing information about each packet;
1496 we're using a read filter on the packets;
1498 we're using any taps. */
1499 do_dissection = print_packet_info || rfcode || have_tap_listeners();
1503 * We're reading a capture file.
1507 * Immediately relinquish any special privileges we have; we must not
1508 * be allowed to read any capture files the user running TShark
1511 relinquish_special_privs_perm();
1512 print_current_user();
1514 if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
1519 /* Set timestamp precision; there should arguably be a command-line
1520 option to let the user set this. */
1521 switch(wtap_file_tsprecision(cfile.wth)) {
1522 case(WTAP_FILE_TSPREC_SEC):
1523 timestamp_set_precision(TS_PREC_AUTO_SEC);
1525 case(WTAP_FILE_TSPREC_DSEC):
1526 timestamp_set_precision(TS_PREC_AUTO_DSEC);
1528 case(WTAP_FILE_TSPREC_CSEC):
1529 timestamp_set_precision(TS_PREC_AUTO_CSEC);
1531 case(WTAP_FILE_TSPREC_MSEC):
1532 timestamp_set_precision(TS_PREC_AUTO_MSEC);
1534 case(WTAP_FILE_TSPREC_USEC):
1535 timestamp_set_precision(TS_PREC_AUTO_USEC);
1537 case(WTAP_FILE_TSPREC_NSEC):
1538 timestamp_set_precision(TS_PREC_AUTO_NSEC);
1541 g_assert_not_reached();
1544 /* Process the packets in the file */
1546 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type,
1547 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
1548 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
1550 err = load_cap_file(&cfile, NULL, out_file_type, 0, 0);
1558 /* No capture file specified, so we're supposed to do a live capture
1559 (or get a list of link-layer types for a live capture device);
1560 do we have support for live captures? */
1567 cmdarg_err("WinPcap couldn't be found.");
1568 detailed_err = cant_load_winpcap_err("TShark");
1569 cmdarg_err_cont("%s", detailed_err);
1570 g_free(detailed_err);
1575 /* trim the interface name and exit if that failed */
1576 if (!capture_opts_trim_iface(&global_capture_opts,
1577 (prefs->capture_device) ? get_if_name(prefs->capture_device) : NULL)) {
1581 /* if requested, list the link layer types and exit */
1582 if (list_link_layer_types) {
1583 status = capture_opts_list_link_layer_types(&global_capture_opts, FALSE);
1587 if (print_packet_info) {
1588 if (!write_preamble(NULL)) {
1590 show_print_file_io_error(err);
1593 } else if (!quiet) {
1595 * We're not printing information for each packet, and the user
1596 * didn't ask us not to print a count of packets as they arrive,
1597 * so print that count so the user knows that packets are arriving.
1599 * XXX - what if the user wants to do a live capture, doesn't want
1600 * to save it to a file, doesn't want information printed for each
1601 * packet, does want some "-z" statistic, and wants packet counts
1602 * so they know whether they're seeing any packets?
1604 print_packet_counts = TRUE;
1607 /* For now, assume libpcap gives microsecond precision. */
1608 timestamp_set_precision(TS_PREC_AUTO_USEC);
1612 if (print_packet_info) {
1613 if (!write_finale()) {
1615 show_print_file_io_error(err);
1619 /* No - complain. */
1620 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1625 draw_tap_listeners(TRUE);
1626 funnel_dump_all_text_windows();
1629 output_fields_free(output_fields);
1630 output_fields = NULL;
1635 /*#define USE_BROKEN_G_MAIN_LOOP*/
1637 #ifdef USE_BROKEN_G_MAIN_LOOP
1640 gboolean loop_running = FALSE;
1642 guint32 packet_count = 0;
1645 /* XXX - move to the right position / file */
1646 /* read from a pipe (callback) */
1647 typedef gboolean (*pipe_input_cb_t) (gint source, gpointer user_data);
1649 typedef struct pipe_input_tag {
1653 pipe_input_cb_t input_cb;
1654 guint pipe_input_id;
1656 GStaticMutex callback_running;
1660 static pipe_input_t pipe_input;
1663 /* The timer has expired, see if there's stuff to read from the pipe,
1664 if so, do the callback */
1666 pipe_timer_cb(gpointer data)
1670 gboolean result, result1;
1672 pipe_input_t *pipe_input = data;
1673 gint iterations = 0;
1676 g_static_mutex_lock (&pipe_input->callback_running);
1678 /* try to read data from the pipe only 5 times, to avoid blocking */
1679 while(iterations < 5) {
1680 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
1682 /* Oddly enough although Named pipes don't work on win9x,
1683 PeekNamedPipe does !!! */
1684 handle = (HANDLE) _get_osfhandle (pipe_input->source);
1685 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
1687 /* Get the child process exit status */
1688 result1 = GetExitCodeProcess((HANDLE)*(pipe_input->child_process),
1691 /* If the Peek returned an error, or there are bytes to be read
1692 or the childwatcher thread has terminated then call the normal
1694 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
1696 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
1698 /* And call the real handler */
1699 if (!pipe_input->input_cb(pipe_input->source, pipe_input->user_data)) {
1700 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
1701 /* pipe closed, return false so that the timer is stopped */
1702 g_static_mutex_unlock (&pipe_input->callback_running);
1707 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
1708 /* No data, stop now */
1715 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
1717 g_static_mutex_unlock (&pipe_input->callback_running);
1719 /* we didn't stopped the timer, so let it run */
1726 pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
1729 pipe_input.source = source;
1730 pipe_input.child_process = child_process;
1731 pipe_input.user_data = user_data;
1732 pipe_input.input_cb = input_cb;
1735 g_static_mutex_init(&pipe_input.callback_running);
1736 /* Tricky to use pipes in win9x, as no concept of wait. NT can
1737 do this but that doesn't cover all win32 platforms. GTK can do
1738 this but doesn't seem to work over processes. Attempt to do
1739 something similar here, start a timer and check for data on every
1741 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
1742 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
1752 #ifdef USE_TSHARK_SELECT
1756 struct sigaction action, oldaction;
1760 * XXX - dropping privileges is still required, until code cleanup is done
1762 * remove all dependencies to pcap specific code and using only dumpcap is almost done.
1763 * when it's done, we don't need special privileges to run tshark at all,
1764 * therefore we don't need to drop these privileges
1765 * The only thing we might want to keep is a warning if tshark is run as root,
1766 * as it's no longer necessary and potentially dangerous.
1768 * THE FOLLOWING IS THE FORMER COMMENT WHICH IS NO LONGER REALLY VALID:
1769 * We've opened the capture device, so we shouldn't need any special
1770 * privileges any more; relinquish those privileges.
1772 * XXX - if we have saved set-user-ID support, we should give up those
1773 * privileges immediately, and then reclaim them long enough to get
1774 * a list of network interfaces and to open one, and then give them
1775 * up again, so that stuff we do while processing the argument list,
1776 * reading the user's preferences, loading and starting plugins
1777 * (especially *user* plugins), etc. is done with the user's privileges,
1778 * not special privileges.
1780 relinquish_special_privs_perm();
1781 print_current_user();
1783 /* Cleanup all data structures used for dissection. */
1784 cleanup_dissection();
1785 /* Initialize all data structures used for dissection. */
1789 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
1790 SetConsoleCtrlHandler(capture_cleanup, TRUE);
1792 /* Catch SIGINT and SIGTERM and, if we get either of them, clean up
1794 action.sa_handler = capture_cleanup;
1795 action.sa_flags = 0;
1796 sigemptyset(&action.sa_mask);
1797 sigaction(SIGTERM, &action, NULL);
1798 sigaction(SIGINT, &action, NULL);
1799 sigaction(SIGHUP, NULL, &oldaction);
1800 if (oldaction.sa_handler == SIG_DFL)
1801 sigaction(SIGHUP, &action, NULL);
1804 /* Catch SIGINFO and, if we get it and we're capturing to a file in
1805 quiet mode, report the number of packets we've captured. */
1806 action.sa_handler = report_counts_siginfo;
1807 action.sa_flags = 0;
1808 sigemptyset(&action.sa_mask);
1809 sigaction(SIGINFO, &action, NULL);
1810 #endif /* SIGINFO */
1813 global_capture_opts.state = CAPTURE_PREPARING;
1815 /* Let the user know what interface was chosen. */
1816 global_capture_opts.iface_descr = get_interface_descriptive_name(global_capture_opts.iface);
1817 fprintf(stderr, "Capturing on %s\n", global_capture_opts.iface_descr);
1819 ret = sync_pipe_start(&global_capture_opts);
1824 /* the actual capture loop
1826 * XXX - glib doesn't seem to provide any event based loop handling.
1828 * XXX - for whatever reason,
1829 * calling g_main_loop_new() ends up in 100% cpu load.
1831 * But that doesn't matter: in UNIX we can use select() to find an input
1832 * source with something to do.
1834 * But that doesn't matter because we're in a CLI (that doesn't need to
1835 * update a GUI or something at the same time) so it's OK if we block
1836 * trying to read from the pipe.
1838 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
1839 * wrong (but I leave it there in case I am...).
1842 #ifdef USE_TSHARK_SELECT
1844 FD_SET(pipe_input.source, &readfds);
1847 loop_running = TRUE;
1849 while (loop_running)
1851 #ifdef USE_TSHARK_SELECT
1852 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
1858 } else if (ret == 1) {
1860 /* Call the real handler */
1861 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
1862 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
1865 #ifdef USE_TSHARK_SELECT
1874 /* XXX - move the call to main_window_update() out of capture_sync.c */
1875 /* dummy for capture_sync.c to make linker happy */
1876 void main_window_update(void)
1880 /* capture child detected an error */
1882 capture_input_error_message(capture_options *capture_opts _U_, char *error_msg, char *secondary_error_msg)
1884 cmdarg_err("%s", error_msg);
1885 cmdarg_err_cont("%s", secondary_error_msg);
1889 /* capture child detected an capture filter related error */
1891 capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
1893 dfilter_t *rfcode = NULL;
1896 if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
1898 "Invalid capture filter: \"%s\"!\n"
1900 "That string looks like a valid display filter; however, it isn't a valid\n"
1901 "capture filter (%s).\n"
1903 "Note that display filters and capture filters don't have the same syntax,\n"
1904 "so you can't use most display filter expressions as capture filters.\n"
1906 "See the User's Guide for a description of the capture filter syntax.",
1907 capture_opts->cfilter, error_message);
1908 dfilter_free(rfcode);
1911 "Invalid capture filter: \"%s\"!\n"
1913 "That string isn't a valid capture filter (%s).\n"
1914 "See the User's Guide for a description of the capture filter syntax.",
1915 capture_opts->cfilter, error_message);
1920 /* capture child tells us we have a new (or the first) capture file */
1922 capture_input_new_file(capture_options *capture_opts, gchar *new_file)
1924 gboolean is_tempfile;
1928 if(capture_opts->state == CAPTURE_PREPARING) {
1929 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
1931 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
1933 g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
1935 /* free the old filename */
1936 if (capture_opts->save_file != NULL) {
1938 /* we start a new capture file, close the old one (if we had one before) */
1939 if( ((capture_file *) capture_opts->cf)->state != FILE_CLOSED) {
1940 if ( ((capture_file *) capture_opts->cf)->wth != NULL) {
1941 wtap_close(((capture_file *) capture_opts->cf)->wth);
1943 ((capture_file *) capture_opts->cf)->state = FILE_CLOSED;
1946 g_free(capture_opts->save_file);
1947 is_tempfile = FALSE;
1949 /* we didn't had a save_file before, must be a tempfile */
1953 /* save the new filename */
1954 capture_opts->save_file = g_strdup(new_file);
1956 /* if we are in real-time mode, open the new file now */
1958 /* Attempt to open the capture file and set up to read from it. */
1959 switch(cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err)) {
1963 /* Don't unlink (delete) the save file - leave it around,
1964 for debugging purposes. */
1965 g_free(capture_opts->save_file);
1966 capture_opts->save_file = NULL;
1971 capture_opts->state = CAPTURE_RUNNING;
1977 /* capture child tells us we have new packets to read */
1979 capture_input_new_packets(capture_options *capture_opts, int to_read)
1985 capture_file *cf = capture_opts->cf;
1986 gboolean filtering_tap_listeners;
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 */
1998 /* Do we have any tap listeners with filters? */
1999 filtering_tap_listeners = have_filtering_tap_listeners();
2001 /* Get the union of the flags for all tap listeners. */
2002 tap_flags = union_of_tap_listener_flags();
2005 while (to_read-- && cf->wth) {
2006 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2008 /* read from file failed, tell the capture child to stop */
2009 sync_pipe_stop(capture_opts);
2010 wtap_close(cf->wth);
2013 ret = process_packet(cf, data_offset, wtap_phdr(cf->wth),
2014 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2015 filtering_tap_listeners, tap_flags);
2018 /* packet sucessfully read and gone through the "Read Filter" */
2024 * Dumpcap's doing all the work; we're not doing any dissection.
2025 * Count all the packets it wrote.
2027 packet_count += to_read;
2030 if (print_packet_counts) {
2031 /* We're printing packet counts. */
2032 if (packet_count != 0) {
2033 fprintf(stderr, "\r%u ", packet_count);
2034 /* stderr could be line buffered */
2041 * Allow SIGINFO handlers to write.
2046 * If a SIGINFO handler asked us to write out capture counts, do so.
2050 #endif /* SIGINFO */
2056 if (!print_packet_counts) {
2057 /* Report the count only if we aren't printing a packet count
2058 as packets arrive. */
2059 fprintf(stderr, "%u packet%s captured\n", packet_count,
2060 plurality(packet_count, "", "s"));
2063 infoprint = FALSE; /* we just reported it */
2064 #endif /* SIGINFO */
2069 report_counts_siginfo(int signum _U_)
2071 int sav_errno = errno;
2072 /* If we've been told to delay printing, just set a flag asking
2073 that we print counts (if we're supposed to), otherwise print
2074 the count of packets captured (if we're supposed to). */
2081 #endif /* SIGINFO */
2084 /* capture child detected any packet drops? */
2086 capture_input_drops(capture_options *capture_opts _U_, guint32 dropped)
2088 if (print_packet_counts) {
2089 /* We're printing packet counts to stderr.
2090 Send a newline so that we move to the line after the packet count. */
2091 fprintf(stderr, "\n");
2095 /* We're printing packet counts to stderr.
2096 Send a newline so that we move to the line after the packet count. */
2097 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2102 /* capture child closed its side of the pipe, do the required cleanup */
2104 capture_input_closed(capture_options *capture_opts)
2108 if(capture_opts->cf != NULL && ((capture_file *) capture_opts->cf)->wth != NULL) {
2109 wtap_close(((capture_file *) capture_opts->cf)->wth);
2111 #ifdef USE_BROKEN_G_MAIN_LOOP
2112 /*g_main_loop_quit(loop);*/
2115 loop_running = FALSE;
2124 capture_cleanup(DWORD ctrltype _U_)
2126 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2127 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2128 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2129 like SIGTERM at least when the machine's shutting down.
2131 For now, we handle them all as indications that we should clean up
2132 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2135 However, as handlers run in a new thread, we can't just longjmp
2136 out; we have to set "ld.go" to FALSE, and must return TRUE so that
2137 no other handler - such as one that would terminate the process -
2140 XXX - for some reason, typing ^C to TShark, if you run this in
2141 a Cygwin console window in at least some versions of Cygwin,
2142 causes TShark to terminate immediately; this routine gets
2143 called, but the main loop doesn't get a chance to run and
2144 exit cleanly, at least if this is compiled with Microsoft Visual
2145 C++ (i.e., it's a property of the Cygwin console window or Bash;
2146 it happens if TShark is not built with Cygwin - for all I know,
2147 building it with Cygwin may make the problem go away). */
2149 /* tell the capture child to stop */
2150 sync_pipe_stop(&global_capture_opts);
2152 /* don't stop our own loop already here, otherwise status messages and
2153 * cleanup wouldn't be done properly. The child will indicate the stop of
2154 * everything by calling capture_input_closed() later */
2160 capture_cleanup(int signum _U_)
2162 /* tell the capture child to stop */
2163 sync_pipe_stop(&global_capture_opts);
2166 #endif /* HAVE_LIBPCAP */
2169 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
2170 int max_packet_count, gint64 max_byte_count)
2173 int snapshot_length;
2178 char *save_file_string = NULL;
2179 gboolean filtering_tap_listeners;
2182 linktype = wtap_file_encap(cf->wth);
2183 if (save_file != NULL) {
2184 /* Get a string that describes what we're writing to */
2185 save_file_string = output_file_description(save_file);
2187 /* Set up to write to the capture file. */
2188 snapshot_length = wtap_snapshot_length(cf->wth);
2189 if (snapshot_length == 0) {
2190 /* Snapshot length of input file not known. */
2191 snapshot_length = WTAP_MAX_PACKET_SIZE;
2193 pdh = wtap_dump_open(save_file, out_file_type, linktype, snapshot_length,
2194 FALSE /* compressed */, &err);
2197 /* We couldn't set up to write to the capture file. */
2200 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2201 cmdarg_err("Capture files can't be written in that format.");
2204 case WTAP_ERR_UNSUPPORTED_ENCAP:
2205 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2206 cmdarg_err("The capture file being read can't be written in "
2210 case WTAP_ERR_CANT_OPEN:
2211 cmdarg_err("The %s couldn't be created for some "
2212 "unknown reason.", save_file_string);
2215 case WTAP_ERR_SHORT_WRITE:
2216 cmdarg_err("A full header couldn't be written to the %s.",
2221 cmdarg_err("The %s could not be created: %s.", save_file_string,
2222 wtap_strerror(err));
2228 if (print_packet_info) {
2229 if (!write_preamble(cf)) {
2231 show_print_file_io_error(err);
2238 /* Do we have any tap listeners with filters? */
2239 filtering_tap_listeners = have_filtering_tap_listeners();
2241 /* Get the union of the flags for all tap listeners. */
2242 tap_flags = union_of_tap_listener_flags();
2244 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
2245 if (process_packet(cf, data_offset, wtap_phdr(cf->wth),
2246 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2247 filtering_tap_listeners, tap_flags)) {
2248 /* Either there's no read filtering or this packet passed the
2249 filter, so, if we're writing to a capture file, write
2252 if (!wtap_dump(pdh, wtap_phdr(cf->wth),
2253 wtap_pseudoheader(cf->wth), wtap_buf_ptr(cf->wth),
2255 /* Error writing to a capture file */
2256 show_capture_file_io_error(save_file, err, FALSE);
2257 wtap_dump_close(pdh, &err);
2261 /* Stop reading if we have the maximum number of packets;
2262 * When the -c option has not been used, max_packet_count
2263 * starts at 0, which practically means, never stop reading.
2264 * (unless we roll over max_packet_count ?)
2266 if( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
2267 err = 0; /* This is not an error */
2273 /* Print a message noting that the read failed somewhere along the line. */
2276 case WTAP_ERR_UNSUPPORTED_ENCAP:
2277 cmdarg_err("\"%s\" has a packet with a network type that TShark doesn't support.\n(%s)",
2278 cf->filename, err_info);
2282 case WTAP_ERR_CANT_READ:
2283 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
2287 case WTAP_ERR_SHORT_READ:
2288 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
2292 case WTAP_ERR_BAD_RECORD:
2293 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
2294 cf->filename, err_info);
2299 cmdarg_err("An error occurred while reading \"%s\": %s.",
2300 cf->filename, wtap_strerror(err));
2303 if (save_file != NULL) {
2304 /* Now close the capture file. */
2305 if (!wtap_dump_close(pdh, &err))
2306 show_capture_file_io_error(save_file, err, TRUE);
2309 if (save_file != NULL) {
2310 /* Now close the capture file. */
2311 if (!wtap_dump_close(pdh, &err))
2312 show_capture_file_io_error(save_file, err, TRUE);
2314 if (print_packet_info) {
2315 if (!write_finale()) {
2317 show_print_file_io_error(err);
2324 wtap_close(cf->wth);
2327 g_free(save_file_string);
2333 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
2334 union wtap_pseudo_header *pseudo_header, const guchar *pd,
2335 gboolean filtering_tap_listeners, guint tap_flags)
2338 gboolean create_proto_tree;
2343 /* Count this packet. */
2346 /* If we're going to print packet information, or we're going to
2347 run a read filter, or we're going to process taps, set up to
2348 do a dissection and do so. */
2349 if (do_dissection) {
2350 frame_data_init(&fdata, cf->count, &cf->elapsed_time, whdr, offset,
2351 &cum_bytes, &first_ts, &prev_dis_ts, &prev_cap_ts);
2353 if (print_packet_info) {
2354 /* Grab any resolved addresses */
2356 if (g_resolv_flags) {
2357 host_name_lookup_process(NULL);
2362 if (cf->rfcode || verbose || filtering_tap_listeners ||
2363 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2364 create_proto_tree = TRUE;
2366 create_proto_tree = FALSE;
2367 /* The protocol tree will be "visible", i.e., printed, only if we're
2368 printing packet details, which is true if we're printing stuff
2369 ("print_packet_info" is true) and we're in verbose mode ("verbose"
2371 epan_dissect_init(&edt, create_proto_tree, print_packet_info && verbose);
2373 /* If we're running a read filter, prime the epan_dissect_t with that
2376 epan_dissect_prime_dfilter(&edt, cf->rfcode);
2378 col_custom_prime_edt(&edt, &cf->cinfo);
2380 tap_queue_init(&edt);
2382 /* We only need the columns if either
2384 1) some tap needs the columns
2388 2) we're printing packet info but we're *not* verbose; in verbose
2389 mode, we print the protocol tree, not the protocol summary. */
2390 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && !verbose))
2394 epan_dissect_run(&edt, pseudo_header, pd, &fdata, cinfo);
2396 tap_push_tapped_queue(&edt);
2398 /* Run the read filter if we have one. */
2400 passed = dfilter_apply_edt(cf->rfcode, &edt);
2404 /* We're not running a display filter and we're not printing any
2405 packet information, so we don't need to do a dissection, and all
2406 packets are processed. */
2411 /* Keep the time of the current packet if the packet passed
2412 the read filter so that the delta time since last displayed
2413 packet can be calculated */
2414 prev_dis_ts = fdata.abs_ts;
2416 /* Process this packet. */
2417 if (print_packet_info) {
2418 /* We're printing packet information; print the information for
2421 print_packet(cf, &edt);
2423 print_packet(cf, NULL);
2425 /* The ANSI C standard does not appear to *require* that a line-buffered
2426 stream be flushed to the host environment whenever a newline is
2427 written, it just says that, on such a stream, characters "are
2428 intended to be transmitted to or from the host environment as a
2429 block when a new-line character is encountered".
2431 The Visual C++ 6.0 C implementation doesn't do what is intended;
2432 even if you set a stream to be line-buffered, it still doesn't
2433 flush the buffer at the end of every line.
2435 So, if the "-l" flag was specified, we flush the standard output
2436 at the end of a packet. This will do the right thing if we're
2437 printing packet summary lines, and, as we print the entire protocol
2438 tree for a single packet without waiting for anything to happen,
2439 it should be as good as line-buffered mode if we're printing
2440 protocol trees. (The whole reason for the "-l" flag in either
2441 tcpdump or TShark is to allow the output of a live capture to
2442 be piped to a program or script and to have that script see the
2443 information for the packet as soon as it's printed, rather than
2444 having to wait until a standard I/O buffer fills up. */
2448 if (ferror(stdout)) {
2449 show_print_file_io_error(errno);
2455 if (do_dissection) {
2456 epan_dissect_cleanup(&edt);
2457 frame_data_cleanup(&fdata);
2463 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
2465 char *save_file_string;
2467 save_file_string = output_file_description(fname);
2472 cmdarg_err("Not all the packets could be written to the %s because there is "
2473 "no space left on the file system.",
2479 cmdarg_err("Not all the packets could be written to the %s because you are "
2480 "too close to, or over your disk quota.",
2485 case WTAP_ERR_CANT_CLOSE:
2486 cmdarg_err("The %s couldn't be closed for some unknown reason.",
2490 case WTAP_ERR_SHORT_WRITE:
2491 cmdarg_err("Not all the packets could be written to the %s.",
2497 cmdarg_err("The %s could not be closed: %s.", save_file_string,
2498 wtap_strerror(err));
2500 cmdarg_err("An error occurred while writing to the %s: %s.",
2501 save_file_string, wtap_strerror(err));
2505 g_free(save_file_string);
2509 write_preamble(capture_file *cf)
2511 switch (output_action) {
2514 return print_preamble(print_stream, cf ? cf->filename : NULL);
2518 write_pdml_preamble(stdout);
2520 write_psml_preamble(stdout);
2521 return !ferror(stdout);
2524 write_fields_preamble(output_fields, stdout);
2525 return !ferror(stdout);
2528 g_assert_not_reached();
2534 get_line_buf(size_t len)
2536 static char *line_bufp = NULL;
2537 static size_t line_buf_len = 256;
2538 size_t new_line_buf_len;
2540 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
2541 new_line_buf_len *= 2)
2543 if (line_bufp == NULL) {
2544 line_buf_len = new_line_buf_len;
2545 line_bufp = g_malloc(line_buf_len + 1);
2547 if (new_line_buf_len > line_buf_len) {
2548 line_buf_len = new_line_buf_len;
2549 line_bufp = g_realloc(line_bufp, line_buf_len + 1);
2556 print_columns(capture_file *cf)
2563 line_bufp = get_line_buf(256);
2566 for (i = 0; i < cf->cinfo.num_cols; i++) {
2567 switch (cf->cinfo.col_fmt[i]) {
2571 * Don't print this if we're doing a live capture from a network
2572 * interface - if we're doing a live capture, you won't be
2573 * able to look at the capture in the future (it's not being
2574 * saved anywhere), so the frame numbers are unlikely to be
2577 * (XXX - it might be nice to be able to save and print at
2578 * the same time, sort of like an "Update list of packets
2579 * in real time" capture in Wireshark.)
2581 if (global_capture_opts.iface != NULL)
2584 column_len = strlen(cf->cinfo.col_data[i]);
2587 line_bufp = get_line_buf(buf_offset + column_len);
2588 sprintf(line_bufp + buf_offset, "%3s", cf->cinfo.col_data[i]);
2594 case COL_ABS_DATE_TIME: /* XXX - wider */
2595 column_len = strlen(cf->cinfo.col_data[i]);
2596 if (column_len < 10)
2598 line_bufp = get_line_buf(buf_offset + column_len);
2599 sprintf(line_bufp + buf_offset, "%10s", cf->cinfo.col_data[i]);
2605 case COL_DEF_DL_SRC:
2606 case COL_RES_DL_SRC:
2607 case COL_UNRES_DL_SRC:
2608 case COL_DEF_NET_SRC:
2609 case COL_RES_NET_SRC:
2610 case COL_UNRES_NET_SRC:
2611 column_len = strlen(cf->cinfo.col_data[i]);
2612 if (column_len < 12)
2614 line_bufp = get_line_buf(buf_offset + column_len);
2615 sprintf(line_bufp + buf_offset, "%12s", cf->cinfo.col_data[i]);
2621 case COL_DEF_DL_DST:
2622 case COL_RES_DL_DST:
2623 case COL_UNRES_DL_DST:
2624 case COL_DEF_NET_DST:
2625 case COL_RES_NET_DST:
2626 case COL_UNRES_NET_DST:
2627 column_len = strlen(cf->cinfo.col_data[i]);
2628 if (column_len < 12)
2630 line_bufp = get_line_buf(buf_offset + column_len);
2631 sprintf(line_bufp + buf_offset, "%-12s", cf->cinfo.col_data[i]);
2635 column_len = strlen(cf->cinfo.col_data[i]);
2636 line_bufp = get_line_buf(buf_offset + column_len);
2637 strcat(line_bufp + buf_offset, cf->cinfo.col_data[i]);
2640 buf_offset += column_len;
2641 if (i != cf->cinfo.num_cols - 1) {
2643 * This isn't the last column, so we need to print a
2644 * separator between this column and the next.
2646 * If we printed a network source and are printing a
2647 * network destination of the same type next, separate
2648 * them with "->"; if we printed a network destination
2649 * and are printing a network source of the same type
2650 * next, separate them with "<-"; otherwise separate them
2653 * We add enough space to the buffer for " <- " or " -> ",
2654 * even if we're only adding " ".
2656 line_bufp = get_line_buf(buf_offset + 4);
2657 switch (cf->cinfo.col_fmt[i]) {
2662 switch (cf->cinfo.col_fmt[i + 1]) {
2667 strcat(line_bufp + buf_offset, " -> ");
2672 strcat(line_bufp + buf_offset, " ");
2678 case COL_DEF_DL_SRC:
2679 case COL_RES_DL_SRC:
2680 case COL_UNRES_DL_SRC:
2681 switch (cf->cinfo.col_fmt[i + 1]) {
2683 case COL_DEF_DL_DST:
2684 case COL_RES_DL_DST:
2685 case COL_UNRES_DL_DST:
2686 strcat(line_bufp + buf_offset, " -> ");
2691 strcat(line_bufp + buf_offset, " ");
2697 case COL_DEF_NET_SRC:
2698 case COL_RES_NET_SRC:
2699 case COL_UNRES_NET_SRC:
2700 switch (cf->cinfo.col_fmt[i + 1]) {
2702 case COL_DEF_NET_DST:
2703 case COL_RES_NET_DST:
2704 case COL_UNRES_NET_DST:
2705 strcat(line_bufp + buf_offset, " -> ");
2710 strcat(line_bufp + buf_offset, " ");
2719 switch (cf->cinfo.col_fmt[i + 1]) {
2724 strcat(line_bufp + buf_offset, " <- ");
2729 strcat(line_bufp + buf_offset, " ");
2735 case COL_DEF_DL_DST:
2736 case COL_RES_DL_DST:
2737 case COL_UNRES_DL_DST:
2738 switch (cf->cinfo.col_fmt[i + 1]) {
2740 case COL_DEF_DL_SRC:
2741 case COL_RES_DL_SRC:
2742 case COL_UNRES_DL_SRC:
2743 strcat(line_bufp + buf_offset, " <- ");
2748 strcat(line_bufp + buf_offset, " ");
2754 case COL_DEF_NET_DST:
2755 case COL_RES_NET_DST:
2756 case COL_UNRES_NET_DST:
2757 switch (cf->cinfo.col_fmt[i + 1]) {
2759 case COL_DEF_NET_SRC:
2760 case COL_RES_NET_SRC:
2761 case COL_UNRES_NET_SRC:
2762 strcat(line_bufp + buf_offset, " <- ");
2767 strcat(line_bufp + buf_offset, " ");
2774 strcat(line_bufp + buf_offset, " ");
2780 return print_line(print_stream, 0, line_bufp);
2784 print_packet(capture_file *cf, epan_dissect_t *edt)
2786 print_args_t print_args;
2789 /* Print the information in the protocol tree. */
2790 switch (output_action) {
2793 print_args.to_file = TRUE;
2794 print_args.format = print_format;
2795 print_args.print_summary = !verbose;
2796 print_args.print_hex = verbose && print_hex;
2797 print_args.print_formfeed = FALSE;
2798 print_args.print_dissections = verbose ? print_dissections_expanded : print_dissections_none;
2800 /* init the packet range */
2801 packet_range_init(&print_args.range);
2803 if (!proto_tree_print(&print_args, edt, print_stream))
2806 /* "print_hex_data()" will put out a leading blank line, as well
2807 as a trailing one; print one here, to separate the packets,
2808 only if "print_hex_data()" won't be called. */
2809 if (!print_line(print_stream, 0, ""))
2815 proto_tree_write_pdml(edt, stdout);
2817 return !ferror(stdout);
2819 proto_tree_write_fields(output_fields, edt, stdout);
2821 return !ferror(stdout);
2824 /* Just fill in the columns. */
2825 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
2827 /* Now print them. */
2828 switch (output_action) {
2831 if (!print_columns(cf))
2836 proto_tree_write_psml(edt, stdout);
2837 return !ferror(stdout);
2838 case WRITE_FIELDS: /*No non-verbose "fields" format */
2839 g_assert_not_reached();
2844 if (!print_hex_data(print_stream, edt))
2846 if (!print_line(print_stream, 0, ""))
2855 switch (output_action) {
2858 return print_finale(print_stream);
2862 write_pdml_finale(stdout);
2864 write_psml_finale(stdout);
2865 return !ferror(stdout);
2868 write_fields_finale(output_fields, stdout);
2869 return !ferror(stdout);
2872 g_assert_not_reached();
2878 show_print_file_io_error(int err)
2883 cmdarg_err("Not all the packets could be printed because there is "
2884 "no space left on the file system.");
2889 cmdarg_err("Not all the packets could be printed because you are "
2890 "too close to, or over your disk quota.");
2895 cmdarg_err("An error occurred while printing packets: %s.",
2902 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
2906 static char errmsg_errno[1024+1];
2909 /* Wiretap error. */
2912 case WTAP_ERR_NOT_REGULAR_FILE:
2913 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
2916 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
2917 /* Seen only when opening a capture file for reading. */
2918 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
2921 case WTAP_ERR_UNSUPPORTED:
2922 /* Seen only when opening a capture file for reading. */
2923 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2924 "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
2927 errmsg = errmsg_errno;
2930 case WTAP_ERR_CANT_WRITE_TO_PIPE:
2931 /* Seen only when opening a capture file for writing. */
2932 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2933 "The file \"%%s\" is a pipe, and %s capture files can't be "
2934 "written to a pipe.", wtap_file_type_string(file_type));
2935 errmsg = errmsg_errno;
2938 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
2939 /* Seen only when opening a capture file for writing. */
2940 errmsg = "TShark doesn't support writing capture files in that format.";
2943 case WTAP_ERR_UNSUPPORTED_ENCAP:
2945 errmsg = "TShark can't save this capture in that format.";
2947 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2948 "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
2951 errmsg = errmsg_errno;
2955 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
2957 errmsg = "TShark can't save this capture in that format.";
2959 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
2962 case WTAP_ERR_BAD_RECORD:
2963 /* Seen only when opening a capture file for reading. */
2964 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2965 "The file \"%%s\" appears to be damaged or corrupt.\n"
2968 errmsg = errmsg_errno;
2971 case WTAP_ERR_CANT_OPEN:
2973 errmsg = "The file \"%s\" could not be created for some unknown reason.";
2975 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
2978 case WTAP_ERR_SHORT_READ:
2979 errmsg = "The file \"%s\" appears to have been cut short"
2980 " in the middle of a packet or other data.";
2983 case WTAP_ERR_SHORT_WRITE:
2984 errmsg = "A full header couldn't be written to the file \"%s\".";
2988 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2989 "The file \"%%s\" could not be %s: %s.",
2990 for_writing ? "created" : "opened",
2991 wtap_strerror(err));
2992 errmsg = errmsg_errno;
2996 errmsg = file_open_error_message(err, for_writing);
3001 * Open/create errors are reported with an console message in TShark.
3004 open_failure_message(const char *filename, int err, gboolean for_writing)
3006 fprintf(stderr, "tshark: ");
3007 fprintf(stderr, file_open_error_message(err, for_writing), filename);
3008 fprintf(stderr, "\n");
3012 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3016 char err_msg[2048+1];
3018 wth = wtap_open_offline(fname, err, &err_info, FALSE);
3022 /* The open succeeded. Fill in the information for this file. */
3024 /* Cleanup all data structures used for dissection. */
3025 cleanup_dissection();
3026 /* Initialize all data structures used for dissection. */
3030 cf->f_datalen = 0; /* not used, but set it anyway */
3032 /* Set the file name because we need it to set the follow stream filter.
3033 XXX - is that still true? We need it for other reasons, though,
3035 cf->filename = g_strdup(fname);
3037 /* Indicate whether it's a permanent or temporary file. */
3038 cf->is_tempfile = is_tempfile;
3040 /* If it's a temporary capture buffer file, mark it as not saved. */
3041 cf->user_saved = !is_tempfile;
3043 cf->cd_t = wtap_file_type(cf->wth);
3045 cf->drops_known = FALSE;
3047 cf->snap = wtap_snapshot_length(cf->wth);
3048 if (cf->snap == 0) {
3049 /* Snapshot length not known. */
3050 cf->has_snap = FALSE;
3051 cf->snap = WTAP_MAX_PACKET_SIZE;
3053 cf->has_snap = TRUE;
3054 nstime_set_zero(&cf->elapsed_time);
3055 nstime_set_unset(&first_ts);
3056 nstime_set_unset(&prev_dis_ts);
3057 nstime_set_unset(&prev_cap_ts);
3059 cf->state = FILE_READ_IN_PROGRESS;
3064 g_snprintf(err_msg, sizeof err_msg,
3065 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
3066 cmdarg_err("%s", err_msg);
3072 * General errors are reported with an console message in TShark.
3075 failure_message(const char *msg_format, va_list ap)
3077 fprintf(stderr, "tshark: ");
3078 vfprintf(stderr, msg_format, ap);
3079 fprintf(stderr, "\n");
3083 * Read errors are reported with an console message in TShark.
3086 read_failure_message(const char *filename, int err)
3088 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
3089 filename, strerror(err));
3093 * Write errors are reported with an console message in TShark.
3096 write_failure_message(const char *filename, int err)
3098 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
3099 filename, strerror(err));
3103 * Report an error in command-line arguments.
3106 cmdarg_err(const char *fmt, ...)
3111 failure_message(fmt, ap);
3116 * Report additional information for an error in command-line arguments.
3119 cmdarg_err_cont(const char *fmt, ...)
3124 vfprintf(stderr, fmt, ap);
3125 fprintf(stderr, "\n");