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1 office 1 /* tfshark.c
2 *
3 * Text-mode variant of Fileshark, based off of TShark,
4 *
5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 */
23  
24 #include <config.h>
25  
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <string.h>
29 #include <locale.h>
30 #include <limits.h>
31  
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #endif
35  
36 #include <errno.h>
37  
38 #ifndef HAVE_GETOPT_LONG
39 #include "wsutil/wsgetopt.h"
40 #endif
41  
42 #include <glib.h>
43  
44 #include <epan/exceptions.h>
45 #include <epan/epan-int.h>
46 #include <epan/epan.h>
47  
48 #include <wsutil/clopts_common.h>
49 #include <wsutil/cmdarg_err.h>
50 #include <wsutil/crash_info.h>
51 #include <wsutil/filesystem.h>
52 #include <wsutil/file_util.h>
53 #include <wsutil/privileges.h>
54 #include <wsutil/report_err.h>
55 #include <ws_version_info.h>
56  
57 #include "globals.h"
58 #include <epan/timestamp.h>
59 #include <epan/packet.h>
60 #ifdef HAVE_LUA
61 #include <epan/wslua/init_wslua.h>
62 #endif
63 #include "file.h"
64 #include "frame_tvbuff.h"
65 #include <epan/disabled_protos.h>
66 #include <epan/prefs.h>
67 #include <epan/column.h>
68 #include <epan/print.h>
69 #include <epan/addr_resolv.h>
70 #include "ui/util.h"
71 #include "ui/decode_as_utils.h"
72 #include "register.h"
73 #include <epan/epan_dissect.h>
74 #include <epan/tap.h>
75 #include <epan/stat_tap_ui.h>
76 #include <epan/ex-opt.h>
77  
78 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
79 #include <epan/asn1.h>
80 #include <epan/dissectors/packet-kerberos.h>
81 #endif
82  
83 #ifdef HAVE_EXTCAP
84 #include "extcap.h"
85 #endif
86  
87 #include <wiretap/wtap-int.h>
88 #include <wiretap/file_wrappers.h>
89  
90 #ifdef _WIN32
91 #include <wsutil/unicode-utils.h>
92 #endif /* _WIN32 */
93  
94 #include "log.h"
95 #include <epan/funnel.h>
96  
97 #ifdef HAVE_PLUGINS
98 #include <wsutil/plugins.h>
99 #endif
100  
101 static guint32 cum_bytes;
102 static const frame_data *ref;
103 static frame_data ref_frame;
104 static frame_data *prev_dis;
105 static frame_data prev_dis_frame;
106 static frame_data *prev_cap;
107 static frame_data prev_cap_frame;
108  
109 static gboolean perform_two_pass_analysis;
110  
111 /*
112 * The way the packet decode is to be written.
113 */
114 typedef enum {
115 WRITE_TEXT, /* summary or detail text */
116 WRITE_XML, /* PDML or PSML */
117 WRITE_FIELDS /* User defined list of fields */
118 /* Add CSV and the like here */
119 } output_action_e;
120  
121 static output_action_e output_action;
122 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
123 static gboolean print_packet_info; /* TRUE if we're to print packet information */
124 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
125 static gboolean print_details; /* TRUE if we're to print packet details information */
126 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
127 static gboolean line_buffered;
128 static gboolean really_quiet = FALSE;
129  
130 static print_format_e print_format = PR_FMT_TEXT;
131 static print_stream_t *print_stream;
132  
133 static output_fields_t* output_fields = NULL;
134  
135 /* The line separator used between packets, changeable via the -S option */
136 static const char *separator = "";
137  
138 static int load_cap_file(capture_file *, int, gint64);
139 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
140 struct wtap_pkthdr *whdr, const guchar *pd, guint tap_flags);
141 static void show_print_file_io_error(int err);
142 static gboolean write_preamble(capture_file *cf);
143 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
144 static gboolean write_finale(void);
145 static const char *cf_open_error_message(int err, gchar *err_info,
146 gboolean for_writing, int file_type);
147  
148 static void open_failure_message(const char *filename, int err,
149 gboolean for_writing);
150 static void failure_message(const char *msg_format, va_list ap);
151 static void read_failure_message(const char *filename, int err);
152 static void write_failure_message(const char *filename, int err);
153 static void failure_message_cont(const char *msg_format, va_list ap);
154  
155 capture_file cfile;
156  
157 static GHashTable *output_only_tables = NULL;
158  
159 #if 0
160 struct string_elem {
161 const char *sstr; /* The short string */
162 const char *lstr; /* The long string */
163 };
164  
165 static gint
166 string_compare(gconstpointer a, gconstpointer b)
167 {
168 return strcmp(((const struct string_elem *)a)->sstr,
169 ((const struct string_elem *)b)->sstr);
170 }
171  
172 static void
173 string_elem_print(gpointer data, gpointer not_used _U_)
174 {
175 fprintf(stderr, " %s - %s\n",
176 ((struct string_elem *)data)->sstr,
177 ((struct string_elem *)data)->lstr);
178 }
179 #endif
180  
181 static void
182 print_usage(FILE *output)
183 {
184 fprintf(output, "\n");
185 fprintf(output, "Usage: tfshark [options] ...\n");
186 fprintf(output, "\n");
187  
188 /*fprintf(output, "\n");*/
189 fprintf(output, "Input file:\n");
190 fprintf(output, " -r <infile> set the filename to read from (no pipes or stdin!)\n");
191  
192 fprintf(output, "\n");
193 fprintf(output, "Processing:\n");
194 fprintf(output, " -2 perform a two-pass analysis\n");
195 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
196 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
197 fprintf(output, " syntax\n");
198 fprintf(output, " -d %s ...\n", DECODE_AS_ARG_TEMPLATE);
199 fprintf(output, " \"Decode As\", see the man page for details\n");
200 fprintf(output, " Example: tcp.port==8888,http\n");
201  
202 /*fprintf(output, "\n");*/
203 fprintf(output, "Output:\n");
204 fprintf(output, " -C <config profile> start with specified configuration profile\n");
205 fprintf(output, " -V add output of packet tree (Packet Details)\n");
206 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
207 fprintf(output, " separated\n");
208 fprintf(output, " -S <separator> the line separator to print between packets\n");
209 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
210 fprintf(output, " -T pdml|ps|psml|text|fields\n");
211 fprintf(output, " format of text output (def: text)\n");
212 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
213 fprintf(output, " _ws.col.Info)\n");
214 fprintf(output, " this option can be repeated to print multiple fields\n");
215 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
216 fprintf(output, " header=y|n switch headers on and off\n");
217 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
218 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
219 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
220 fprintf(output, " aggregator\n");
221 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
222 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
223 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
224 fprintf(output, " -l flush standard output after each packet\n");
225 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
226 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
227 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
228 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
229  
230 fprintf(output, "\n");
231 fprintf(output, "Miscellaneous:\n");
232 fprintf(output, " -h display this help and exit\n");
233 fprintf(output, " -v display version info and exit\n");
234 fprintf(output, " -o <name>:<value> ... override preference setting\n");
235 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
236 fprintf(output, " -G [report] dump one of several available reports and exit\n");
237 fprintf(output, " default report=\"fields\"\n");
238 fprintf(output, " use \"-G ?\" for more help\n");
239 }
240  
241 static void
242 glossary_option_help(void)
243 {
244 FILE *output;
245  
246 output = stdout;
247  
248 fprintf(output, "TFShark (Wireshark) %s\n", get_ws_vcs_version_info());
249  
250 fprintf(output, "\n");
251 fprintf(output, "Usage: tfshark -G [report]\n");
252 fprintf(output, "\n");
253 fprintf(output, "Glossary table reports:\n");
254 fprintf(output, " -G column-formats dump column format codes and exit\n");
255 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
256 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
257 fprintf(output, " -G fields dump fields glossary and exit\n");
258 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
259 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
260 fprintf(output, " -G plugins dump installed plugins and exit\n");
261 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
262 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
263 fprintf(output, "\n");
264 fprintf(output, "Preference reports:\n");
265 fprintf(output, " -G currentprefs dump current preferences and exit\n");
266 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
267 fprintf(output, "\n");
268 }
269  
270 static void
271 tfshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
272 const gchar *message, gpointer user_data)
273 {
274 /* ignore log message, if log_level isn't interesting based
275 upon the console log preferences.
276 If the preferences haven't been loaded loaded yet, display the
277 message anyway.
278  
279 The default console_log_level preference value is such that only
280 ERROR, CRITICAL and WARNING level messages are processed;
281 MESSAGE, INFO and DEBUG level messages are ignored.
282  
283 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
284 ERROR and CRITICAL level messages so the current code is a behavioral
285 change. The current behavior is the same as in Wireshark.
286 */
287 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
288 prefs.console_log_level != 0) {
289 return;
290 }
291  
292 g_log_default_handler(log_domain, log_level, message, user_data);
293  
294 }
295  
296 static void
297 print_current_user(void) {
298 gchar *cur_user, *cur_group;
299  
300 if (started_with_special_privs()) {
301 cur_user = get_cur_username();
302 cur_group = get_cur_groupname();
303 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
304 cur_user, cur_group);
305 g_free(cur_user);
306 g_free(cur_group);
307 if (running_with_special_privs()) {
308 fprintf(stderr, " This could be dangerous.");
309 }
310 fprintf(stderr, "\n");
311 }
312 }
313  
314 static void
315 get_tfshark_runtime_version_info(GString *str)
316 {
317 /* stuff used by libwireshark */
318 epan_get_runtime_version_info(str);
319 }
320  
321 int
322 main(int argc, char *argv[])
323 {
324 GString *comp_info_str;
325 GString *runtime_info_str;
326 char *init_progfile_dir_error;
327 int opt;
328 static const struct option long_options[] = {
329 {"help", no_argument, NULL, 'h'},
330 {"version", no_argument, NULL, 'v'},
331 {0, 0, 0, 0 }
332 };
333 gboolean arg_error = FALSE;
334  
335 char *gpf_path, *pf_path;
336 char *gdp_path, *dp_path;
337 int gpf_open_errno, gpf_read_errno;
338 int pf_open_errno, pf_read_errno;
339 int gdp_open_errno, gdp_read_errno;
340 int dp_open_errno, dp_read_errno;
341 int err;
342 volatile int exit_status = 0;
343 gboolean quiet = FALSE;
344 gchar *volatile cf_name = NULL;
345 gchar *rfilter = NULL;
346 gchar *dfilter = NULL;
347 dfilter_t *rfcode = NULL;
348 dfilter_t *dfcode = NULL;
349 gchar *err_msg;
350 e_prefs *prefs_p;
351 int log_flags;
352 gchar *output_only = NULL;
353  
354 /*
355 * The leading + ensures that getopt_long() does not permute the argv[]
356 * entries.
357 *
358 * We have to make sure that the first getopt_long() preserves the content
359 * of argv[] for the subsequent getopt_long() call.
360 *
361 * We use getopt_long() in both cases to ensure that we're using a routine
362 * whose permutation behavior we can control in the same fashion on all
363 * platforms, and so that, if we ever need to process a long argument before
364 * doing further initialization, we can do so.
365 *
366 * Glibc and Solaris libc document that a leading + disables permutation
367 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
368 * and OS X don't document it, but do so anyway.
369 *
370 * We do *not* use a leading - because the behavior of a leading - is
371 * platform-dependent.
372 */
373 #define OPTSTRING "+2C:d:e:E:hK:lo:O:qQr:R:S:t:T:u:vVxX:Y:z:"
374  
375 static const char optstring[] = OPTSTRING;
376  
377 /* Set the C-language locale to the native environment. */
378 setlocale(LC_ALL, "");
379  
380 cmdarg_err_init(failure_message, failure_message_cont);
381  
382 #ifdef _WIN32
383 arg_list_utf_16to8(argc, argv);
384 create_app_running_mutex();
385 #if !GLIB_CHECK_VERSION(2,31,0)
386 g_thread_init(NULL);
387 #endif
388 #endif /* _WIN32 */
389  
390 /*
391 * Get credential information for later use, and drop privileges
392 * before doing anything else.
393 * Let the user know if anything happened.
394 */
395 init_process_policies();
396 relinquish_special_privs_perm();
397 print_current_user();
398  
399 /*
400 * Attempt to get the pathname of the executable file.
401 */
402 init_progfile_dir_error = init_progfile_dir(argv[0], main);
403 if (init_progfile_dir_error != NULL) {
404 fprintf(stderr, "tfshark: Can't get pathname of tfshark program: %s.\n",
405 init_progfile_dir_error);
406 }
407  
408 initialize_funnel_ops();
409  
410 /* Get the compile-time version information string */
411 comp_info_str = get_compiled_version_info(NULL, epan_get_compiled_version_info);
412  
413 /* Get the run-time version information string */
414 runtime_info_str = get_runtime_version_info(get_tfshark_runtime_version_info);
415  
416 /* Add it to the information to be reported on a crash. */
417 ws_add_crash_info("TFShark (Wireshark) %s\n"
418 "\n"
419 "%s"
420 "\n"
421 "%s",
422 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
423  
424 /*
425 * In order to have the -X opts assigned before the wslua machine starts
426 * we need to call getopts before epan_init() gets called.
427 *
428 * In order to handle, for example, -o options, we also need to call it
429 * *after* epan_init() gets called, so that the dissectors have had a
430 * chance to register their preferences.
431 *
432 * XXX - can we do this all with one getopt_long() call, saving the
433 * arguments we can't handle until after initializing libwireshark,
434 * and then process them after initializing libwireshark?
435 */
436 opterr = 0;
437  
438 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
439 switch (opt) {
440 case 'C': /* Configuration Profile */
441 if (profile_exists (optarg, FALSE)) {
442 set_profile_name (optarg);
443 } else {
444 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
445 return 1;
446 }
447 break;
448 case 'O': /* Only output these protocols */
449 output_only = g_strdup(optarg);
450 /* FALLTHROUGH */
451 case 'V': /* Verbose */
452 print_details = TRUE;
453 print_packet_info = TRUE;
454 break;
455 case 'x': /* Print packet data in hex (and ASCII) */
456 print_hex = TRUE;
457 /* The user asked for hex output, so let's ensure they get it,
458 * even if they're writing to a file.
459 */
460 print_packet_info = TRUE;
461 break;
462 case 'X':
463 ex_opt_add(optarg);
464 break;
465 default:
466 break;
467 }
468 }
469  
470 /*
471 * Print packet summary information is the default, unless either -V or -x
472 * were specified. Note that this is new behavior, which
473 * allows for the possibility of printing only hex/ascii output without
474 * necessarily requiring that either the summary or details be printed too.
475 */
476 if (print_summary == -1)
477 print_summary = (print_details || print_hex) ? FALSE : TRUE;
478  
479 /** Send All g_log messages to our own handler **/
480  
481 log_flags =
482 G_LOG_LEVEL_ERROR|
483 G_LOG_LEVEL_CRITICAL|
484 G_LOG_LEVEL_WARNING|
485 G_LOG_LEVEL_MESSAGE|
486 G_LOG_LEVEL_INFO|
487 G_LOG_LEVEL_DEBUG|
488 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
489  
490 g_log_set_handler(NULL,
491 (GLogLevelFlags)log_flags,
492 tfshark_log_handler, NULL /* user_data */);
493 g_log_set_handler(LOG_DOMAIN_MAIN,
494 (GLogLevelFlags)log_flags,
495 tfshark_log_handler, NULL /* user_data */);
496  
497 init_report_err(failure_message, open_failure_message, read_failure_message,
498 write_failure_message);
499  
500 timestamp_set_type(TS_RELATIVE);
501 timestamp_set_precision(TS_PREC_AUTO);
502 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
503  
504 init_open_routines();
505  
506 #ifdef HAVE_PLUGINS
507 /* Register all the plugin types we have. */
508 epan_register_plugin_types(); /* Types known to libwireshark */
509  
510 /* Scan for plugins. This does *not* call their registration routines;
511 that's done later. */
512 scan_plugins();
513  
514 #endif
515  
516 /* Register all dissectors; we must do this before checking for the
517 "-G" flag, as the "-G" flag dumps information registered by the
518 dissectors, and we must do it before we read the preferences, in
519 case any dissectors register preferences. */
520 if (!epan_init(register_all_protocols, register_all_protocol_handoffs, NULL,
521 NULL))
522 return 2;
523  
524 /* Register all tap listeners; we do this before we parse the arguments,
525 as the "-z" argument can specify a registered tap. */
526  
527 /* we register the plugin taps before the other taps because
528 stats_tree taps plugins will be registered as tap listeners
529 by stats_tree_stat.c and need to registered before that */
530  
531 /* XXX Disable tap registration for now until we can get tfshark set up with
532 * its own set of taps and the necessary registration function etc.
533 #ifdef HAVE_PLUGINS
534 register_all_plugin_tap_listeners();
535 #endif
536 register_all_tap_listeners();
537 */
538  
539 /* If invoked with the "-G" flag, we dump out information based on
540 the argument to the "-G" flag; if no argument is specified,
541 for backwards compatibility we dump out a glossary of display
542 filter symbols.
543  
544 XXX - we do this here, for now, to support "-G" with no arguments.
545 If none of our build or other processes uses "-G" with no arguments,
546 we can just process it with the other arguments. */
547 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
548 proto_initialize_all_prefixes();
549  
550 if (argc == 2)
551 proto_registrar_dump_fields();
552 else {
553 if (strcmp(argv[2], "column-formats") == 0)
554 column_dump_column_formats();
555 else if (strcmp(argv[2], "currentprefs") == 0) {
556 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
557 &pf_open_errno, &pf_read_errno, &pf_path);
558 write_prefs(NULL);
559 }
560 else if (strcmp(argv[2], "decodes") == 0)
561 dissector_dump_decodes();
562 else if (strcmp(argv[2], "defaultprefs") == 0)
563 write_prefs(NULL);
564 else if (strcmp(argv[2], "dissector-tables") == 0)
565 dissector_dump_dissector_tables();
566 else if (strcmp(argv[2], "fields") == 0)
567 proto_registrar_dump_fields();
568 else if (strcmp(argv[2], "ftypes") == 0)
569 proto_registrar_dump_ftypes();
570 else if (strcmp(argv[2], "heuristic-decodes") == 0)
571 dissector_dump_heur_decodes();
572 else if (strcmp(argv[2], "plugins") == 0) {
573 #ifdef HAVE_PLUGINS
574 plugins_dump_all();
575 #endif
576 #ifdef HAVE_LUA
577 wslua_plugins_dump_all();
578 #endif
579 }
580 else if (strcmp(argv[2], "protocols") == 0)
581 proto_registrar_dump_protocols();
582 else if (strcmp(argv[2], "values") == 0)
583 proto_registrar_dump_values();
584 else if (strcmp(argv[2], "?") == 0)
585 glossary_option_help();
586 else if (strcmp(argv[2], "-?") == 0)
587 glossary_option_help();
588 else {
589 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
590 return 1;
591 }
592 }
593 return 0;
594 }
595  
596 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
597 &pf_open_errno, &pf_read_errno, &pf_path);
598 if (gpf_path != NULL) {
599 if (gpf_open_errno != 0) {
600 cmdarg_err("Can't open global preferences file \"%s\": %s.",
601 pf_path, g_strerror(gpf_open_errno));
602 }
603 if (gpf_read_errno != 0) {
604 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
605 pf_path, g_strerror(gpf_read_errno));
606 }
607 }
608 if (pf_path != NULL) {
609 if (pf_open_errno != 0) {
610 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
611 g_strerror(pf_open_errno));
612 }
613 if (pf_read_errno != 0) {
614 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
615 pf_path, g_strerror(pf_read_errno));
616 }
617 g_free(pf_path);
618 pf_path = NULL;
619 }
620  
621 /* Read the disabled protocols file. */
622 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
623 &dp_path, &dp_open_errno, &dp_read_errno);
624 read_disabled_heur_dissector_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
625 &dp_path, &dp_open_errno, &dp_read_errno);
626 if (gdp_path != NULL) {
627 if (gdp_open_errno != 0) {
628 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
629 gdp_path, g_strerror(gdp_open_errno));
630 }
631 if (gdp_read_errno != 0) {
632 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
633 gdp_path, g_strerror(gdp_read_errno));
634 }
635 g_free(gdp_path);
636 }
637 if (dp_path != NULL) {
638 if (dp_open_errno != 0) {
639 cmdarg_err(
640 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
641 g_strerror(dp_open_errno));
642 }
643 if (dp_read_errno != 0) {
644 cmdarg_err(
645 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
646 g_strerror(dp_read_errno));
647 }
648 g_free(dp_path);
649 }
650  
651 cap_file_init(&cfile);
652  
653 /* Print format defaults to this. */
654 print_format = PR_FMT_TEXT;
655  
656 output_fields = output_fields_new();
657  
658 /*
659 * To reset the options parser, set optreset to 1 on platforms that
660 * have optreset (documented in *BSD and OS X, apparently present but
661 * not documented in Solaris - the Illumos repository seems to
662 * suggest that the first Solaris getopt_long(), at least as of 2004,
663 * was based on the NetBSD one, it had optreset) and set optind to 1,
664 * and set optind to 0 otherwise (documented as working in the GNU
665 * getopt_long(). Setting optind to 0 didn't originally work in the
666 * NetBSD one, but that was added later - we don't want to depend on
667 * it if we have optreset).
668 *
669 * Also reset opterr to 1, so that error messages are printed by
670 * getopt_long().
671 */
672 #ifdef HAVE_OPTRESET
673 optreset = 1;
674 optind = 1;
675 #else
676 optind = 0;
677 #endif
678 opterr = 1;
679  
680 /* Now get our args */
681 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
682 switch (opt) {
683 case '2': /* Perform two pass analysis */
684 perform_two_pass_analysis = TRUE;
685 break;
686 case 'C':
687 /* already processed; just ignore it now */
688 break;
689 case 'd': /* Decode as rule */
690 if (!decode_as_command_option(optarg))
691 return 1;
692 break;
693 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
694 case 'K': /* Kerberos keytab file */
695 read_keytab_file(optarg);
696 break;
697 #endif
698 case 'e':
699 /* Field entry */
700 output_fields_add(output_fields, optarg);
701 break;
702 case 'E':
703 /* Field option */
704 if (!output_fields_set_option(output_fields, optarg)) {
705 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
706 output_fields_list_options(stderr);
707 return 1;
708 }
709 break;
710  
711 case 'h': /* Print help and exit */
712 printf("TFShark (Wireshark) %s\n"
713 "Dump and analyze network traffic.\n"
714 "See https://www.wireshark.org for more information.\n",
715 get_ws_vcs_version_info());
716 print_usage(stdout);
717 return 0;
718 break;
719 case 'l': /* "Line-buffer" standard output */
720 /* This isn't line-buffering, strictly speaking, it's just
721 flushing the standard output after the information for
722 each packet is printed; however, that should be good
723 enough for all the purposes to which "-l" is put (and
724 is probably actually better for "-V", as it does fewer
725 writes).
726  
727 See the comment in "process_packet()" for an explanation of
728 why we do that, and why we don't just use "setvbuf()" to
729 make the standard output line-buffered (short version: in
730 Windows, "line-buffered" is the same as "fully-buffered",
731 and the output buffer is only flushed when it fills up). */
732 line_buffered = TRUE;
733 break;
734 case 'o': /* Override preference from command line */
735 switch (prefs_set_pref(optarg)) {
736  
737 case PREFS_SET_OK:
738 break;
739  
740 case PREFS_SET_SYNTAX_ERR:
741 cmdarg_err("Invalid -o flag \"%s\"", optarg);
742 return 1;
743 break;
744  
745 case PREFS_SET_NO_SUCH_PREF:
746 case PREFS_SET_OBSOLETE:
747 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
748 return 1;
749 break;
750 }
751 break;
752 case 'q': /* Quiet */
753 quiet = TRUE;
754 break;
755 case 'Q': /* Really quiet */
756 quiet = TRUE;
757 really_quiet = TRUE;
758 break;
759 case 'r': /* Read capture file x */
760 cf_name = g_strdup(optarg);
761 break;
762 case 'R': /* Read file filter */
763 rfilter = optarg;
764 break;
765 case 'S': /* Set the line Separator to be printed between packets */
766 separator = g_strdup(optarg);
767 break;
768 case 't': /* Time stamp type */
769 if (strcmp(optarg, "r") == 0)
770 timestamp_set_type(TS_RELATIVE);
771 else if (strcmp(optarg, "a") == 0)
772 timestamp_set_type(TS_ABSOLUTE);
773 else if (strcmp(optarg, "ad") == 0)
774 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
775 else if (strcmp(optarg, "adoy") == 0)
776 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
777 else if (strcmp(optarg, "d") == 0)
778 timestamp_set_type(TS_DELTA);
779 else if (strcmp(optarg, "dd") == 0)
780 timestamp_set_type(TS_DELTA_DIS);
781 else if (strcmp(optarg, "e") == 0)
782 timestamp_set_type(TS_EPOCH);
783 else if (strcmp(optarg, "u") == 0)
784 timestamp_set_type(TS_UTC);
785 else if (strcmp(optarg, "ud") == 0)
786 timestamp_set_type(TS_UTC_WITH_YMD);
787 else if (strcmp(optarg, "udoy") == 0)
788 timestamp_set_type(TS_UTC_WITH_YDOY);
789 else {
790 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
791 cmdarg_err_cont("\t\"a\" for absolute\n"
792 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
793 "\t\"adoy\" for absolute with YYYY/DOY date\n"
794 "\t\"d\" for delta\n"
795 "\t\"dd\" for delta displayed\n"
796 "\t\"e\" for epoch\n"
797 "\t\"r\" for relative\n"
798 "\t\"u\" for absolute UTC\n"
799 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
800 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
801 return 1;
802 }
803 break;
804 case 'T': /* printing Type */
805 if (strcmp(optarg, "text") == 0) {
806 output_action = WRITE_TEXT;
807 print_format = PR_FMT_TEXT;
808 } else if (strcmp(optarg, "ps") == 0) {
809 output_action = WRITE_TEXT;
810 print_format = PR_FMT_PS;
811 } else if (strcmp(optarg, "pdml") == 0) {
812 output_action = WRITE_XML;
813 print_details = TRUE; /* Need details */
814 print_summary = FALSE; /* Don't allow summary */
815 } else if (strcmp(optarg, "psml") == 0) {
816 output_action = WRITE_XML;
817 print_details = FALSE; /* Don't allow details */
818 print_summary = TRUE; /* Need summary */
819 } else if (strcmp(optarg, "fields") == 0) {
820 output_action = WRITE_FIELDS;
821 print_details = TRUE; /* Need full tree info */
822 print_summary = FALSE; /* Don't allow summary */
823 } else {
824 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
825 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
826 "\t specified by the -E option.\n"
827 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
828 "\t details of a decoded packet. This information is equivalent to\n"
829 "\t the packet details printed with the -V flag.\n"
830 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
831 "\t the packets, or a multi-line view of the details of each of\n"
832 "\t the packets, depending on whether the -V flag was specified.\n"
833 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
834 "\t summary information of a decoded packet. This information is\n"
835 "\t equivalent to the information shown in the one-line summary\n"
836 "\t printed by default.\n"
837 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
838 "\t packets, or a multi-line view of the details of each of the\n"
839 "\t packets, depending on whether the -V flag was specified.\n"
840 "\t This is the default.");
841 return 1;
842 }
843 break;
844 case 'u': /* Seconds type */
845 if (strcmp(optarg, "s") == 0)
846 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
847 else if (strcmp(optarg, "hms") == 0)
848 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
849 else {
850 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
851 cmdarg_err_cont("\t\"s\" for seconds\n"
852 "\t\"hms\" for hours, minutes and seconds");
853 return 1;
854 }
855 break;
856 case 'v': /* Show version and exit */
857 {
858 show_version("TFShark (Wireshark)", comp_info_str, runtime_info_str);
859 g_string_free(comp_info_str, TRUE);
860 g_string_free(runtime_info_str, TRUE);
861 /* We don't really have to cleanup here, but it's a convenient way to test
862 * start-up and shut-down of the epan library without any UI-specific
863 * cruft getting in the way. Makes the results of running
864 * $ ./tools/valgrind-wireshark -n
865 * much more useful. */
866 epan_cleanup();
867 #ifdef HAVE_EXTCAP
868 extcap_cleanup();
869 #endif
870 return 0;
871 }
872 case 'O': /* Only output these protocols */
873 /* already processed; just ignore it now */
874 break;
875 case 'V': /* Verbose */
876 /* already processed; just ignore it now */
877 break;
878 case 'x': /* Print packet data in hex (and ASCII) */
879 /* already processed; just ignore it now */
880 break;
881 case 'X':
882 /* already processed; just ignore it now */
883 break;
884 case 'Y':
885 dfilter = optarg;
886 break;
887 case 'z':
888 /* We won't call the init function for the stat this soon
889 as it would disallow MATE's fields (which are registered
890 by the preferences set callback) from being used as
891 part of a tap filter. Instead, we just add the argument
892 to a list of stat arguments. */
893 if (strcmp("help", optarg) == 0) {
894 fprintf(stderr, "tfshark: The available statistics for the \"-z\" option are:\n");
895 list_stat_cmd_args();
896 return 0;
897 }
898 if (!process_stat_cmd_arg(optarg)) {
899 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
900 list_stat_cmd_args();
901 return 1;
902 }
903 break;
904 default:
905 case '?': /* Bad flag - print usage message */
906 print_usage(stderr);
907 return 1;
908 break;
909 }
910 }
911  
912 /* If we specified output fields, but not the output field type... */
913 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
914 cmdarg_err("Output fields were specified with \"-e\", "
915 "but \"-Tfields\" was not specified.");
916 return 1;
917 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
918 cmdarg_err("\"-Tfields\" was specified, but no fields were "
919 "specified with \"-e\".");
920  
921 return 1;
922 }
923  
924 /* If no capture filter or display filter has been specified, and there are
925 still command-line arguments, treat them as the tokens of a capture
926 filter (if no "-r" flag was specified) or a display filter (if a "-r"
927 flag was specified. */
928 if (optind < argc) {
929 if (cf_name != NULL) {
930 if (dfilter != NULL) {
931 cmdarg_err("Display filters were specified both with \"-d\" "
932 "and with additional command-line arguments.");
933 return 1;
934 }
935 dfilter = get_args_as_string(argc, argv, optind);
936 }
937 }
938  
939 /* if "-q" wasn't specified, we should print packet information */
940 if (!quiet)
941 print_packet_info = TRUE;
942  
943 if (arg_error) {
944 print_usage(stderr);
945 return 1;
946 }
947  
948 if (print_hex) {
949 if (output_action != WRITE_TEXT) {
950 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
951 return 1;
952 }
953 }
954  
955 if (output_only != NULL) {
956 char *ps;
957  
958 if (!print_details) {
959 cmdarg_err("-O requires -V");
960 return 1;
961 }
962  
963 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
964 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
965 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
966 }
967 }
968  
969 if (rfilter != NULL && !perform_two_pass_analysis) {
970 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
971 return 1;
972 }
973  
974 /* Notify all registered modules that have had any of their preferences
975 changed either from one of the preferences file or from the command
976 line that their preferences have changed. */
977 prefs_apply_all();
978  
979 /* At this point MATE will have registered its field array so we can
980 have a tap filter with one of MATE's late-registered fields as part
981 of the filter. We can now process all the "-z" arguments. */
982 start_requested_stats();
983  
984 /* disabled protocols as per configuration file */
985 if (gdp_path == NULL && dp_path == NULL) {
986 set_disabled_protos_list();
987 set_disabled_heur_dissector_list();
988 }
989  
990 /* Build the column format array */
991 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
992  
993 if (rfilter != NULL) {
994 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
995 cmdarg_err("%s", err_msg);
996 g_free(err_msg);
997 epan_cleanup();
998 #ifdef HAVE_EXTCAP
999 extcap_cleanup();
1000 #endif
1001 return 2;
1002 }
1003 }
1004 cfile.rfcode = rfcode;
1005  
1006 if (dfilter != NULL) {
1007 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
1008 cmdarg_err("%s", err_msg);
1009 g_free(err_msg);
1010 epan_cleanup();
1011 #ifdef HAVE_EXTCAP
1012 extcap_cleanup();
1013 #endif
1014 return 2;
1015 }
1016 }
1017 cfile.dfcode = dfcode;
1018  
1019 if (print_packet_info) {
1020 /* If we're printing as text or PostScript, we have
1021 to create a print stream. */
1022 if (output_action == WRITE_TEXT) {
1023 switch (print_format) {
1024  
1025 case PR_FMT_TEXT:
1026 print_stream = print_stream_text_stdio_new(stdout);
1027 break;
1028  
1029 case PR_FMT_PS:
1030 print_stream = print_stream_ps_stdio_new(stdout);
1031 break;
1032  
1033 default:
1034 g_assert_not_reached();
1035 }
1036 }
1037 }
1038  
1039 /* We have to dissect each packet if:
1040  
1041 we're printing information about each packet;
1042  
1043 we're using a read filter on the packets;
1044  
1045 we're using a display filter on the packets;
1046  
1047 we're using any taps that need dissection. */
1048 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
1049  
1050 if (cf_name) {
1051 /*
1052 * We're reading a capture file.
1053 */
1054  
1055 /* TODO: if tfshark is ever changed to give the user a choice of which
1056 open_routine reader to use, then the following needs to change. */
1057 if (cf_open(&cfile, cf_name, WTAP_TYPE_AUTO, FALSE, &err) != CF_OK) {
1058 epan_cleanup();
1059 #ifdef HAVE_EXTCAP
1060 extcap_cleanup();
1061 #endif
1062 return 2;
1063 }
1064  
1065 /* Process the packets in the file */
1066 TRY {
1067 /* XXX - for now there is only 1 packet */
1068 err = load_cap_file(&cfile, 1, 0);
1069 }
1070 CATCH(OutOfMemoryError) {
1071 fprintf(stderr,
1072 "Out Of Memory!\n"
1073 "\n"
1074 "Sorry, but TFShark has to terminate now!\n"
1075 "\n"
1076 "Some infos / workarounds can be found at:\n"
1077 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
1078 err = ENOMEM;
1079 }
1080 ENDTRY;
1081  
1082 if (err != 0) {
1083 /* We still dump out the results of taps, etc., as we might have
1084 read some packets; however, we exit with an error status. */
1085 exit_status = 2;
1086 }
1087 }
1088  
1089 g_free(cf_name);
1090  
1091 if (cfile.frames != NULL) {
1092 free_frame_data_sequence(cfile.frames);
1093 cfile.frames = NULL;
1094 }
1095  
1096 draw_tap_listeners(TRUE);
1097 funnel_dump_all_text_windows();
1098 epan_free(cfile.epan);
1099 epan_cleanup();
1100 #ifdef HAVE_EXTCAP
1101 extcap_cleanup();
1102 #endif
1103  
1104 output_fields_free(output_fields);
1105 output_fields = NULL;
1106  
1107 return exit_status;
1108 }
1109  
1110 static const nstime_t *
1111 tfshark_get_frame_ts(void *data, guint32 frame_num)
1112 {
1113 capture_file *cf = (capture_file *) data;
1114  
1115 if (ref && ref->num == frame_num)
1116 return &ref->abs_ts;
1117  
1118 if (prev_dis && prev_dis->num == frame_num)
1119 return &prev_dis->abs_ts;
1120  
1121 if (prev_cap && prev_cap->num == frame_num)
1122 return &prev_cap->abs_ts;
1123  
1124 if (cf->frames) {
1125 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
1126  
1127 return (fd) ? &fd->abs_ts : NULL;
1128 }
1129  
1130 return NULL;
1131 }
1132  
1133 static const char *
1134 no_interface_name(void *data _U_, guint32 interface_id _U_)
1135 {
1136 return "";
1137 }
1138  
1139 static epan_t *
1140 tfshark_epan_new(capture_file *cf)
1141 {
1142 epan_t *epan = epan_new();
1143  
1144 epan->data = cf;
1145 epan->get_frame_ts = tfshark_get_frame_ts;
1146 epan->get_interface_name = no_interface_name;
1147 epan->get_user_comment = NULL;
1148  
1149 return epan;
1150 }
1151  
1152 static gboolean
1153 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
1154 gint64 offset, struct wtap_pkthdr *whdr,
1155 const guchar *pd)
1156 {
1157 frame_data fdlocal;
1158 guint32 framenum;
1159 gboolean passed;
1160  
1161 /* The frame number of this packet is one more than the count of
1162 frames in this packet. */
1163 framenum = cf->count + 1;
1164  
1165 /* If we're not running a display filter and we're not printing any
1166 packet information, we don't need to do a dissection. This means
1167 that all packets can be marked as 'passed'. */
1168 passed = TRUE;
1169  
1170 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
1171  
1172 /* If we're going to print packet information, or we're going to
1173 run a read filter, or display filter, or we're going to process taps, set up to
1174 do a dissection and do so. */
1175 if (edt) {
1176 /* If we're running a read filter, prime the epan_dissect_t with that
1177 filter. */
1178 if (cf->rfcode)
1179 epan_dissect_prime_dfilter(edt, cf->rfcode);
1180  
1181 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
1182 &ref, prev_dis);
1183 if (ref == &fdlocal) {
1184 ref_frame = fdlocal;
1185 ref = &ref_frame;
1186 }
1187  
1188 epan_dissect_file_run(edt, whdr, file_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
1189  
1190 /* Run the read filter if we have one. */
1191 if (cf->rfcode)
1192 passed = dfilter_apply_edt(cf->rfcode, edt);
1193 }
1194  
1195 if (passed) {
1196 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
1197 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
1198  
1199 /* If we're not doing dissection then there won't be any dependent frames.
1200 * More importantly, edt.pi.dependent_frames won't be initialized because
1201 * epan hasn't been initialized.
1202 */
1203 if (edt) {
1204 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
1205 }
1206  
1207 cf->count++;
1208 } else {
1209 /* if we don't add it to the frame_data_sequence, clean it up right now
1210 * to avoid leaks */
1211 frame_data_destroy(&fdlocal);
1212 }
1213  
1214 if (edt)
1215 epan_dissect_reset(edt);
1216  
1217 return passed;
1218 }
1219  
1220 static gboolean
1221 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
1222 struct wtap_pkthdr *phdr, Buffer *buf,
1223 guint tap_flags)
1224 {
1225 column_info *cinfo;
1226 gboolean passed;
1227  
1228 /* If we're not running a display filter and we're not printing any
1229 packet information, we don't need to do a dissection. This means
1230 that all packets can be marked as 'passed'. */
1231 passed = TRUE;
1232  
1233 /* If we're going to print packet information, or we're going to
1234 run a read filter, or we're going to process taps, set up to
1235 do a dissection and do so. */
1236 if (edt) {
1237  
1238 /* If we're running a display filter, prime the epan_dissect_t with that
1239 filter. */
1240 if (cf->dfcode)
1241 epan_dissect_prime_dfilter(edt, cf->dfcode);
1242  
1243 col_custom_prime_edt(edt, &cf->cinfo);
1244  
1245 /* We only need the columns if either
1246 1) some tap needs the columns
1247 or
1248 2) we're printing packet info but we're *not* verbose; in verbose
1249 mode, we print the protocol tree, not the protocol summary.
1250 */
1251 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary))
1252 cinfo = &cf->cinfo;
1253 else
1254 cinfo = NULL;
1255  
1256 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1257 &ref, prev_dis);
1258 if (ref == fdata) {
1259 ref_frame = *fdata;
1260 ref = &ref_frame;
1261 }
1262  
1263 epan_dissect_file_run_with_taps(edt, phdr, file_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
1264  
1265 /* Run the read/display filter if we have one. */
1266 if (cf->dfcode)
1267 passed = dfilter_apply_edt(cf->dfcode, edt);
1268 }
1269  
1270 if (passed) {
1271 frame_data_set_after_dissect(fdata, &cum_bytes);
1272 /* Process this packet. */
1273 if (print_packet_info) {
1274 /* We're printing packet information; print the information for
1275 this packet. */
1276 print_packet(cf, edt);
1277  
1278 /* The ANSI C standard does not appear to *require* that a line-buffered
1279 stream be flushed to the host environment whenever a newline is
1280 written, it just says that, on such a stream, characters "are
1281 intended to be transmitted to or from the host environment as a
1282 block when a new-line character is encountered".
1283  
1284 The Visual C++ 6.0 C implementation doesn't do what is intended;
1285 even if you set a stream to be line-buffered, it still doesn't
1286 flush the buffer at the end of every line.
1287  
1288 So, if the "-l" flag was specified, we flush the standard output
1289 at the end of a packet. This will do the right thing if we're
1290 printing packet summary lines, and, as we print the entire protocol
1291 tree for a single packet without waiting for anything to happen,
1292 it should be as good as line-buffered mode if we're printing
1293 protocol trees. (The whole reason for the "-l" flag in either
1294 tcpdump or TShark is to allow the output of a live capture to
1295 be piped to a program or script and to have that script see the
1296 information for the packet as soon as it's printed, rather than
1297 having to wait until a standard I/O buffer fills up. */
1298 if (line_buffered)
1299 fflush(stdout);
1300  
1301 if (ferror(stdout)) {
1302 show_print_file_io_error(errno);
1303 exit(2);
1304 }
1305 }
1306 prev_dis = fdata;
1307 }
1308 prev_cap = fdata;
1309  
1310 if (edt) {
1311 epan_dissect_reset(edt);
1312 }
1313 return passed || fdata->flags.dependent_of_displayed;
1314 }
1315  
1316 static gboolean
1317 local_wtap_read(capture_file *cf, struct wtap_pkthdr* file_phdr _U_, int *err, gchar **err_info _U_, gint64 *data_offset _U_, guint8** data_buffer)
1318 {
1319 /* int bytes_read; */
1320 gint64 packet_size = wtap_file_size(cf->wth, err);
1321  
1322 *data_buffer = (guint8*)g_malloc((gsize)packet_size);
1323 /* bytes_read =*/ file_read(*data_buffer, (unsigned int)packet_size, cf->wth->fh);
1324  
1325 #if 0 /* no more filetap */
1326 if (bytes_read < 0) {
1327 *err = file_error(cf->wth->fh, err_info);
1328 if (*err == 0)
1329 *err = FTAP_ERR_SHORT_READ;
1330 return FALSE;
1331 } else if (bytes_read == 0) {
1332 /* Done with file, no error */
1333 return FALSE;
1334 }
1335  
1336  
1337 /* XXX - SET FRAME SIZE EQUAL TO TOTAL FILE SIZE */
1338 file_phdr->caplen = (guint32)packet_size;
1339 file_phdr->len = (guint32)packet_size;
1340  
1341 /*
1342 * Set the packet encapsulation to the file's encapsulation
1343 * value; if that's not WTAP_ENCAP_PER_PACKET, it's the
1344 * right answer (and means that the read routine for this
1345 * capture file type doesn't have to set it), and if it
1346 * *is* WTAP_ENCAP_PER_PACKET, the caller needs to set it
1347 * anyway.
1348 */
1349 wth->phdr.pkt_encap = wth->file_encap;
1350  
1351 if (!wth->subtype_read(wth, err, err_info, data_offset)) {
1352 /*
1353 * If we didn't get an error indication, we read
1354 * the last packet. See if there's any deferred
1355 * error, as might, for example, occur if we're
1356 * reading a compressed file, and we got an error
1357 * reading compressed data from the file, but
1358 * got enough compressed data to decompress the
1359 * last packet of the file.
1360 */
1361 if (*err == 0)
1362 *err = file_error(wth->fh, err_info);
1363 return FALSE; /* failure */
1364 }
1365  
1366 /*
1367 * It makes no sense for the captured data length to be bigger
1368 * than the actual data length.
1369 */
1370 if (wth->phdr.caplen > wth->phdr.len)
1371 wth->phdr.caplen = wth->phdr.len;
1372  
1373 /*
1374 * Make sure that it's not WTAP_ENCAP_PER_PACKET, as that
1375 * probably means the file has that encapsulation type
1376 * but the read routine didn't set this packet's
1377 * encapsulation type.
1378 */
1379 g_assert(wth->phdr.pkt_encap != WTAP_ENCAP_PER_PACKET);
1380 #endif
1381  
1382 return TRUE; /* success */
1383 }
1384  
1385 static int
1386 load_cap_file(capture_file *cf, int max_packet_count, gint64 max_byte_count)
1387 {
1388 guint32 framenum;
1389 int err;
1390 gchar *err_info = NULL;
1391 gint64 data_offset = 0;
1392 gboolean filtering_tap_listeners;
1393 guint tap_flags;
1394 Buffer buf;
1395 epan_dissect_t *edt = NULL;
1396 struct wtap_pkthdr file_phdr;
1397 guint8* raw_data;
1398  
1399 if (print_packet_info) {
1400 if (!write_preamble(cf)) {
1401 err = errno;
1402 show_print_file_io_error(err);
1403 goto out;
1404 }
1405 }
1406  
1407 /* Do we have any tap listeners with filters? */
1408 filtering_tap_listeners = have_filtering_tap_listeners();
1409  
1410 /* Get the union of the flags for all tap listeners. */
1411 tap_flags = union_of_tap_listener_flags();
1412  
1413 wtap_phdr_init(&file_phdr);
1414  
1415 /* XXX - TEMPORARY HACK TO ELF DISSECTOR */
1416 file_phdr.pkt_encap = 1234;
1417  
1418 if (perform_two_pass_analysis) {
1419 frame_data *fdata;
1420  
1421 /* Allocate a frame_data_sequence for all the frames. */
1422 cf->frames = new_frame_data_sequence();
1423  
1424 if (do_dissection) {
1425 gboolean create_proto_tree = FALSE;
1426  
1427 /* If we're going to be applying a filter, we'll need to
1428 create a protocol tree against which to apply the filter. */
1429 if (cf->rfcode)
1430 create_proto_tree = TRUE;
1431  
1432 /* We're not going to display the protocol tree on this pass,
1433 so it's not going to be "visible". */
1434 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
1435 }
1436 while (local_wtap_read(cf, &file_phdr, &err, &err_info, &data_offset, &raw_data)) {
1437 if (process_packet_first_pass(cf, edt, data_offset, &file_phdr/*wtap_phdr(cf->wth)*/,
1438 wtap_buf_ptr(cf->wth))) {
1439  
1440 /* Stop reading if we have the maximum number of packets;
1441 * When the -c option has not been used, max_packet_count
1442 * starts at 0, which practically means, never stop reading.
1443 * (unless we roll over max_packet_count ?)
1444 */
1445 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
1446 err = 0; /* This is not an error */
1447 break;
1448 }
1449 }
1450 }
1451  
1452 if (edt) {
1453 epan_dissect_free(edt);
1454 edt = NULL;
1455 }
1456  
1457 #if 0
1458 /* Close the sequential I/O side, to free up memory it requires. */
1459 wtap_sequential_close(cf->wth);
1460 #endif
1461  
1462 /* Allow the protocol dissectors to free up memory that they
1463 * don't need after the sequential run-through of the packets. */
1464 postseq_cleanup_all_protocols();
1465  
1466 prev_dis = NULL;
1467 prev_cap = NULL;
1468 ws_buffer_init(&buf, 1500);
1469  
1470 if (do_dissection) {
1471 gboolean create_proto_tree;
1472  
1473 if (cf->dfcode || print_details || filtering_tap_listeners ||
1474 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
1475 create_proto_tree = TRUE;
1476 else
1477 create_proto_tree = FALSE;
1478  
1479 /* The protocol tree will be "visible", i.e., printed, only if we're
1480 printing packet details, which is true if we're printing stuff
1481 ("print_packet_info" is true) and we're in verbose mode
1482 ("packet_details" is true). */
1483 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
1484 }
1485  
1486 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
1487 fdata = frame_data_sequence_find(cf->frames, framenum);
1488 #if 0
1489 if (wtap_seek_read(cf->wth, fdata->file_off,
1490 &buf, fdata->cap_len, &err, &err_info)) {
1491 process_packet_second_pass(cf, edt, fdata, &cf->phdr, &buf, tap_flags);
1492 }
1493 #else
1494 process_packet_second_pass(cf, edt, fdata, &cf->phdr, &buf, tap_flags);
1495 #endif
1496 }
1497  
1498 if (edt) {
1499 epan_dissect_free(edt);
1500 edt = NULL;
1501 }
1502  
1503 ws_buffer_free(&buf);
1504 }
1505 else {
1506 framenum = 0;
1507  
1508 if (do_dissection) {
1509 gboolean create_proto_tree;
1510  
1511 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
1512 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
1513 create_proto_tree = TRUE;
1514 else
1515 create_proto_tree = FALSE;
1516  
1517 /* The protocol tree will be "visible", i.e., printed, only if we're
1518 printing packet details, which is true if we're printing stuff
1519 ("print_packet_info" is true) and we're in verbose mode
1520 ("packet_details" is true). */
1521 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
1522 }
1523  
1524 while (local_wtap_read(cf, &file_phdr, &err, &err_info, &data_offset, &raw_data)) {
1525  
1526 framenum++;
1527  
1528 process_packet(cf, edt, data_offset, &file_phdr/*wtap_phdr(cf->wth)*/,
1529 raw_data, tap_flags);
1530  
1531 /* Stop reading if we have the maximum number of packets;
1532 * When the -c option has not been used, max_packet_count
1533 * starts at 0, which practically means, never stop reading.
1534 * (unless we roll over max_packet_count ?)
1535 */
1536 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
1537 err = 0; /* This is not an error */
1538 break;
1539 }
1540 }
1541  
1542 if (edt) {
1543 epan_dissect_free(edt);
1544 edt = NULL;
1545 }
1546 }
1547  
1548 wtap_phdr_cleanup(&file_phdr);
1549  
1550 if (err != 0) {
1551 /*
1552 * Print a message noting that the read failed somewhere along the line.
1553 *
1554 * If we're printing packet data, and the standard output and error are
1555 * going to the same place, flush the standard output, so everything
1556 * buffered up is written, and then print a newline to the standard error
1557 * before printing the error message, to separate it from the packet
1558 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
1559 * the _fstat() documentation at Microsoft doesn't indicate whether
1560 * st_ino is even supported.)
1561 */
1562 #ifndef _WIN32
1563 if (print_packet_info) {
1564 ws_statb64 stat_stdout, stat_stderr;
1565  
1566 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
1567 if (stat_stdout.st_dev == stat_stderr.st_dev &&
1568 stat_stdout.st_ino == stat_stderr.st_ino) {
1569 fflush(stdout);
1570 fprintf(stderr, "\n");
1571 }
1572 }
1573 }
1574 #endif
1575 #if 0
1576 switch (err) {
1577  
1578 case FTAP_ERR_UNSUPPORTED:
1579 cmdarg_err("The file \"%s\" contains record data that TFShark doesn't support.\n(%s)",
1580 cf->filename, err_info);
1581 g_free(err_info);
1582 break;
1583  
1584 case FTAP_ERR_UNSUPPORTED_ENCAP:
1585 cmdarg_err("The file \"%s\" has a packet with a network type that TFShark doesn't support.\n(%s)",
1586 cf->filename, err_info);
1587 g_free(err_info);
1588 break;
1589  
1590 case FTAP_ERR_CANT_READ:
1591 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
1592 cf->filename);
1593 break;
1594  
1595 case FTAP_ERR_SHORT_READ:
1596 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
1597 cf->filename);
1598 break;
1599  
1600 case FTAP_ERR_BAD_FILE:
1601 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
1602 cf->filename, err_info);
1603 g_free(err_info);
1604 break;
1605  
1606 case FTAP_ERR_DECOMPRESS:
1607 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
1608 "(%s)", cf->filename, err_info);
1609 break;
1610  
1611 default:
1612 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
1613 cf->filename, ftap_strerror(err));
1614 break;
1615 }
1616 #endif
1617 } else {
1618 if (print_packet_info) {
1619 if (!write_finale()) {
1620 err = errno;
1621 show_print_file_io_error(err);
1622 }
1623 }
1624 }
1625  
1626 out:
1627 wtap_close(cf->wth);
1628 cf->wth = NULL;
1629  
1630 return err;
1631 }
1632  
1633 static gboolean
1634 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
1635 struct wtap_pkthdr *whdr, const guchar *pd, guint tap_flags)
1636 {
1637 frame_data fdata;
1638 column_info *cinfo;
1639 gboolean passed;
1640  
1641 /* Count this packet. */
1642 cf->count++;
1643  
1644 /* If we're not running a display filter and we're not printing any
1645 packet information, we don't need to do a dissection. This means
1646 that all packets can be marked as 'passed'. */
1647 passed = TRUE;
1648  
1649 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1650  
1651 /* If we're going to print packet information, or we're going to
1652 run a read filter, or we're going to process taps, set up to
1653 do a dissection and do so. */
1654 if (edt) {
1655 /* If we're running a filter, prime the epan_dissect_t with that
1656 filter. */
1657 if (cf->dfcode)
1658 epan_dissect_prime_dfilter(edt, cf->dfcode);
1659  
1660 col_custom_prime_edt(edt, &cf->cinfo);
1661  
1662 /* We only need the columns if either
1663 1) some tap needs the columns
1664 or
1665 2) we're printing packet info but we're *not* verbose; in verbose
1666 mode, we print the protocol tree, not the protocol summary.
1667 or
1668 3) there is a column mapped as an individual field */
1669 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
1670 cinfo = &cf->cinfo;
1671 else
1672 cinfo = NULL;
1673  
1674 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1675 &ref, prev_dis);
1676 if (ref == &fdata) {
1677 ref_frame = fdata;
1678 ref = &ref_frame;
1679 }
1680  
1681 epan_dissect_file_run_with_taps(edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
1682  
1683 /* Run the filter if we have it. */
1684 if (cf->dfcode)
1685 passed = dfilter_apply_edt(cf->dfcode, edt);
1686 }
1687  
1688 if (passed) {
1689 frame_data_set_after_dissect(&fdata, &cum_bytes);
1690  
1691 /* Process this packet. */
1692 if (print_packet_info) {
1693 /* We're printing packet information; print the information for
1694 this packet. */
1695 print_packet(cf, edt);
1696  
1697 /* The ANSI C standard does not appear to *require* that a line-buffered
1698 stream be flushed to the host environment whenever a newline is
1699 written, it just says that, on such a stream, characters "are
1700 intended to be transmitted to or from the host environment as a
1701 block when a new-line character is encountered".
1702  
1703 The Visual C++ 6.0 C implementation doesn't do what is intended;
1704 even if you set a stream to be line-buffered, it still doesn't
1705 flush the buffer at the end of every line.
1706  
1707 So, if the "-l" flag was specified, we flush the standard output
1708 at the end of a packet. This will do the right thing if we're
1709 printing packet summary lines, and, as we print the entire protocol
1710 tree for a single packet without waiting for anything to happen,
1711 it should be as good as line-buffered mode if we're printing
1712 protocol trees. (The whole reason for the "-l" flag in either
1713 tcpdump or TShark is to allow the output of a live capture to
1714 be piped to a program or script and to have that script see the
1715 information for the packet as soon as it's printed, rather than
1716 having to wait until a standard I/O buffer fills up. */
1717 if (line_buffered)
1718 fflush(stdout);
1719  
1720 if (ferror(stdout)) {
1721 show_print_file_io_error(errno);
1722 exit(2);
1723 }
1724 }
1725  
1726 /* this must be set after print_packet() [bug #8160] */
1727 prev_dis_frame = fdata;
1728 prev_dis = &prev_dis_frame;
1729 }
1730  
1731 prev_cap_frame = fdata;
1732 prev_cap = &prev_cap_frame;
1733  
1734 if (edt) {
1735 epan_dissect_reset(edt);
1736 frame_data_destroy(&fdata);
1737 }
1738 return passed;
1739 }
1740  
1741 static gboolean
1742 write_preamble(capture_file *cf)
1743 {
1744 switch (output_action) {
1745  
1746 case WRITE_TEXT:
1747 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
1748  
1749 case WRITE_XML:
1750 if (print_details)
1751 write_pdml_preamble(stdout, cf->filename);
1752 else
1753 write_psml_preamble(&cf->cinfo, stdout);
1754 return !ferror(stdout);
1755  
1756 case WRITE_FIELDS:
1757 write_fields_preamble(output_fields, stdout);
1758 return !ferror(stdout);
1759  
1760 default:
1761 g_assert_not_reached();
1762 return FALSE;
1763 }
1764 }
1765  
1766 static char *
1767 get_line_buf(size_t len)
1768 {
1769 static char *line_bufp = NULL;
1770 static size_t line_buf_len = 256;
1771 size_t new_line_buf_len;
1772  
1773 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
1774 new_line_buf_len *= 2)
1775 ;
1776 if (line_bufp == NULL) {
1777 line_buf_len = new_line_buf_len;
1778 line_bufp = (char *)g_malloc(line_buf_len + 1);
1779 } else {
1780 if (new_line_buf_len > line_buf_len) {
1781 line_buf_len = new_line_buf_len;
1782 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
1783 }
1784 }
1785 return line_bufp;
1786 }
1787  
1788 static inline void
1789 put_string(char *dest, const char *str, size_t str_len)
1790 {
1791 memcpy(dest, str, str_len);
1792 dest[str_len] = '\0';
1793 }
1794  
1795 static inline void
1796 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
1797 {
1798 size_t i;
1799  
1800 for (i = str_len; i < str_with_spaces; i++)
1801 *dest++ = ' ';
1802  
1803 put_string(dest, str, str_len);
1804 }
1805  
1806 static inline void
1807 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
1808 {
1809 size_t i;
1810  
1811 memcpy(dest, str, str_len);
1812 for (i = str_len; i < str_with_spaces; i++)
1813 dest[i] = ' ';
1814  
1815 dest[str_with_spaces] = '\0';
1816 }
1817  
1818 static gboolean
1819 print_columns(capture_file *cf)
1820 {
1821 char *line_bufp;
1822 int i;
1823 size_t buf_offset;
1824 size_t column_len;
1825 size_t col_len;
1826 col_item_t* col_item;
1827  
1828 line_bufp = get_line_buf(256);
1829 buf_offset = 0;
1830 *line_bufp = '\0';
1831 for (i = 0; i < cf->cinfo.num_cols; i++) {
1832 col_item = &cf->cinfo.columns[i];
1833 /* Skip columns not marked as visible. */
1834 if (!get_column_visible(i))
1835 continue;
1836 switch (col_item->col_fmt) {
1837 case COL_NUMBER:
1838 column_len = col_len = strlen(col_item->col_data);
1839 if (column_len < 3)
1840 column_len = 3;
1841 line_bufp = get_line_buf(buf_offset + column_len);
1842 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
1843 break;
1844  
1845 case COL_CLS_TIME:
1846 case COL_REL_TIME:
1847 case COL_ABS_TIME:
1848 case COL_ABS_YMD_TIME: /* XXX - wider */
1849 case COL_ABS_YDOY_TIME: /* XXX - wider */
1850 case COL_UTC_TIME:
1851 case COL_UTC_YMD_TIME: /* XXX - wider */
1852 case COL_UTC_YDOY_TIME: /* XXX - wider */
1853 column_len = col_len = strlen(col_item->col_data);
1854 if (column_len < 10)
1855 column_len = 10;
1856 line_bufp = get_line_buf(buf_offset + column_len);
1857 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
1858 break;
1859  
1860 case COL_DEF_SRC:
1861 case COL_RES_SRC:
1862 case COL_UNRES_SRC:
1863 case COL_DEF_DL_SRC:
1864 case COL_RES_DL_SRC:
1865 case COL_UNRES_DL_SRC:
1866 case COL_DEF_NET_SRC:
1867 case COL_RES_NET_SRC:
1868 case COL_UNRES_NET_SRC:
1869 column_len = col_len = strlen(col_item->col_data);
1870 if (column_len < 12)
1871 column_len = 12;
1872 line_bufp = get_line_buf(buf_offset + column_len);
1873 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
1874 break;
1875  
1876 case COL_DEF_DST:
1877 case COL_RES_DST:
1878 case COL_UNRES_DST:
1879 case COL_DEF_DL_DST:
1880 case COL_RES_DL_DST:
1881 case COL_UNRES_DL_DST:
1882 case COL_DEF_NET_DST:
1883 case COL_RES_NET_DST:
1884 case COL_UNRES_NET_DST:
1885 column_len = col_len = strlen(col_item->col_data);
1886 if (column_len < 12)
1887 column_len = 12;
1888 line_bufp = get_line_buf(buf_offset + column_len);
1889 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
1890 break;
1891  
1892 default:
1893 column_len = strlen(col_item->col_data);
1894 line_bufp = get_line_buf(buf_offset + column_len);
1895 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
1896 break;
1897 }
1898 buf_offset += column_len;
1899 if (i != cf->cinfo.num_cols - 1) {
1900 /*
1901 * This isn't the last column, so we need to print a
1902 * separator between this column and the next.
1903 *
1904 * If we printed a network source and are printing a
1905 * network destination of the same type next, separate
1906 * them with " -> "; if we printed a network destination
1907 * and are printing a network source of the same type
1908 * next, separate them with " <- "; otherwise separate them
1909 * with a space.
1910 *
1911 * We add enough space to the buffer for " <- " or " -> ",
1912 * even if we're only adding " ".
1913 */
1914 line_bufp = get_line_buf(buf_offset + 4);
1915 switch (col_item->col_fmt) {
1916  
1917 case COL_DEF_SRC:
1918 case COL_RES_SRC:
1919 case COL_UNRES_SRC:
1920 switch (cf->cinfo.columns[i+1].col_fmt) {
1921  
1922 case COL_DEF_DST:
1923 case COL_RES_DST:
1924 case COL_UNRES_DST:
1925 put_string(line_bufp + buf_offset, " -> ", 4);
1926 buf_offset += 4;
1927 break;
1928  
1929 default:
1930 put_string(line_bufp + buf_offset, " ", 1);
1931 buf_offset += 1;
1932 break;
1933 }
1934 break;
1935  
1936 case COL_DEF_DL_SRC:
1937 case COL_RES_DL_SRC:
1938 case COL_UNRES_DL_SRC:
1939 switch (cf->cinfo.columns[i+1].col_fmt) {
1940  
1941 case COL_DEF_DL_DST:
1942 case COL_RES_DL_DST:
1943 case COL_UNRES_DL_DST:
1944 put_string(line_bufp + buf_offset, " -> ", 4);
1945 buf_offset += 4;
1946 break;
1947  
1948 default:
1949 put_string(line_bufp + buf_offset, " ", 1);
1950 buf_offset += 1;
1951 break;
1952 }
1953 break;
1954  
1955 case COL_DEF_NET_SRC:
1956 case COL_RES_NET_SRC:
1957 case COL_UNRES_NET_SRC:
1958 switch (cf->cinfo.columns[i+1].col_fmt) {
1959  
1960 case COL_DEF_NET_DST:
1961 case COL_RES_NET_DST:
1962 case COL_UNRES_NET_DST:
1963 put_string(line_bufp + buf_offset, " -> ", 4);
1964 buf_offset += 4;
1965 break;
1966  
1967 default:
1968 put_string(line_bufp + buf_offset, " ", 1);
1969 buf_offset += 1;
1970 break;
1971 }
1972 break;
1973  
1974 case COL_DEF_DST:
1975 case COL_RES_DST:
1976 case COL_UNRES_DST:
1977 switch (cf->cinfo.columns[i+1].col_fmt) {
1978  
1979 case COL_DEF_SRC:
1980 case COL_RES_SRC:
1981 case COL_UNRES_SRC:
1982 put_string(line_bufp + buf_offset, " <- ", 4);
1983 buf_offset += 4;
1984 break;
1985  
1986 default:
1987 put_string(line_bufp + buf_offset, " ", 1);
1988 buf_offset += 1;
1989 break;
1990 }
1991 break;
1992  
1993 case COL_DEF_DL_DST:
1994 case COL_RES_DL_DST:
1995 case COL_UNRES_DL_DST:
1996 switch (cf->cinfo.columns[i+1].col_fmt) {
1997  
1998 case COL_DEF_DL_SRC:
1999 case COL_RES_DL_SRC:
2000 case COL_UNRES_DL_SRC:
2001 put_string(line_bufp + buf_offset, " <- ", 4);
2002 buf_offset += 4;
2003 break;
2004  
2005 default:
2006 put_string(line_bufp + buf_offset, " ", 1);
2007 buf_offset += 1;
2008 break;
2009 }
2010 break;
2011  
2012 case COL_DEF_NET_DST:
2013 case COL_RES_NET_DST:
2014 case COL_UNRES_NET_DST:
2015 switch (cf->cinfo.columns[i+1].col_fmt) {
2016  
2017 case COL_DEF_NET_SRC:
2018 case COL_RES_NET_SRC:
2019 case COL_UNRES_NET_SRC:
2020 put_string(line_bufp + buf_offset, " <- ", 4);
2021 buf_offset += 4;
2022 break;
2023  
2024 default:
2025 put_string(line_bufp + buf_offset, " ", 1);
2026 buf_offset += 1;
2027 break;
2028 }
2029 break;
2030  
2031 default:
2032 put_string(line_bufp + buf_offset, " ", 1);
2033 buf_offset += 1;
2034 break;
2035 }
2036 }
2037 }
2038 return print_line(print_stream, 0, line_bufp);
2039 }
2040  
2041 static gboolean
2042 print_packet(capture_file *cf, epan_dissect_t *edt)
2043 {
2044 print_args_t print_args;
2045  
2046 if (print_summary || output_fields_has_cols(output_fields)) {
2047 /* Just fill in the columns. */
2048 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
2049  
2050 if (print_summary) {
2051 /* Now print them. */
2052 switch (output_action) {
2053  
2054 case WRITE_TEXT:
2055 if (!print_columns(cf))
2056 return FALSE;
2057 break;
2058  
2059 case WRITE_XML:
2060 write_psml_columns(edt, stdout);
2061 return !ferror(stdout);
2062 case WRITE_FIELDS: /*No non-verbose "fields" format */
2063 g_assert_not_reached();
2064 break;
2065 }
2066 }
2067 }
2068 if (print_details) {
2069 /* Print the information in the protocol tree. */
2070 switch (output_action) {
2071  
2072 case WRITE_TEXT:
2073 /* Only initialize the fields that are actually used in proto_tree_print.
2074 * This is particularly important for .range, as that's heap memory which
2075 * we would otherwise have to g_free().
2076 print_args.to_file = TRUE;
2077 print_args.format = print_format;
2078 print_args.print_summary = print_summary;
2079 print_args.print_formfeed = FALSE;
2080 packet_range_init(&print_args.range, &cfile);
2081 */
2082 print_args.print_hex = print_hex;
2083 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
2084  
2085 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
2086 return FALSE;
2087 if (!print_hex) {
2088 if (!print_line(print_stream, 0, separator))
2089 return FALSE;
2090 }
2091 break;
2092  
2093 case WRITE_XML:
2094 write_pdml_proto_tree(NULL, NULL, edt, stdout);
2095 printf("\n");
2096 return !ferror(stdout);
2097 case WRITE_FIELDS:
2098 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
2099 printf("\n");
2100 return !ferror(stdout);
2101 }
2102 }
2103 if (print_hex) {
2104 if (print_summary || print_details) {
2105 if (!print_line(print_stream, 0, ""))
2106 return FALSE;
2107 }
2108 if (!print_hex_data(print_stream, edt))
2109 return FALSE;
2110 if (!print_line(print_stream, 0, separator))
2111 return FALSE;
2112 }
2113 return TRUE;
2114 }
2115  
2116 static gboolean
2117 write_finale(void)
2118 {
2119 switch (output_action) {
2120  
2121 case WRITE_TEXT:
2122 return print_finale(print_stream);
2123  
2124 case WRITE_XML:
2125 if (print_details)
2126 write_pdml_finale(stdout);
2127 else
2128 write_psml_finale(stdout);
2129 return !ferror(stdout);
2130  
2131 case WRITE_FIELDS:
2132 write_fields_finale(output_fields, stdout);
2133 return !ferror(stdout);
2134  
2135 default:
2136 g_assert_not_reached();
2137 return FALSE;
2138 }
2139 }
2140  
2141 cf_status_t
2142 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
2143 {
2144 gchar *err_info;
2145 char err_msg[2048+1];
2146  
2147 /* The open isn't implemented yet. Fill in the information for this file. */
2148  
2149 /* Create new epan session for dissection. */
2150 epan_free(cf->epan);
2151 cf->epan = tfshark_epan_new(cf);
2152  
2153 cf->wth = NULL; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
2154 cf->f_datalen = 0; /* not used, but set it anyway */
2155  
2156 /* Set the file name because we need it to set the follow stream filter.
2157 XXX - is that still true? We need it for other reasons, though,
2158 in any case. */
2159 cf->filename = g_strdup(fname);
2160  
2161 /* Indicate whether it's a permanent or temporary file. */
2162 cf->is_tempfile = is_tempfile;
2163  
2164 /* No user changes yet. */
2165 cf->unsaved_changes = FALSE;
2166  
2167 cf->cd_t = 0; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
2168 cf->open_type = type;
2169 cf->count = 0;
2170 cf->drops_known = FALSE;
2171 cf->drops = 0;
2172 cf->snap = 0; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
2173 if (cf->snap == 0) {
2174 /* Snapshot length not known. */
2175 cf->has_snap = FALSE;
2176 cf->snap = 0;
2177 } else
2178 cf->has_snap = TRUE;
2179 nstime_set_zero(&cf->elapsed_time);
2180 ref = NULL;
2181 prev_dis = NULL;
2182 prev_cap = NULL;
2183  
2184 cf->state = FILE_READ_IN_PROGRESS;
2185  
2186 return CF_OK;
2187  
2188 /* fail: */
2189 g_snprintf(err_msg, sizeof err_msg,
2190 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
2191 cmdarg_err("%s", err_msg);
2192 return CF_ERROR;
2193 }
2194  
2195 static void
2196 show_print_file_io_error(int err)
2197 {
2198 switch (err) {
2199  
2200 case ENOSPC:
2201 cmdarg_err("Not all the packets could be printed because there is "
2202 "no space left on the file system.");
2203 break;
2204  
2205 #ifdef EDQUOT
2206 case EDQUOT:
2207 cmdarg_err("Not all the packets could be printed because you are "
2208 "too close to, or over your disk quota.");
2209 break;
2210 #endif
2211  
2212 default:
2213 cmdarg_err("An error occurred while printing packets: %s.",
2214 g_strerror(err));
2215 break;
2216 }
2217 }
2218  
2219 static const char *
2220 cf_open_error_message(int err, gchar *err_info _U_, gboolean for_writing,
2221 int file_type _U_)
2222 {
2223 const char *errmsg;
2224 /* static char errmsg_errno[1024+1]; */
2225  
2226 #if 0
2227 if (err < 0) {
2228 /* Wiretap error. */
2229 switch (err) {
2230  
2231 case FTAP_ERR_NOT_REGULAR_FILE:
2232 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
2233 break;
2234  
2235 case FTAP_ERR_RANDOM_OPEN_PIPE:
2236 /* Seen only when opening a capture file for reading. */
2237 errmsg = "The file \"%s\" is a pipe or FIFO; TFShark can't read pipe or FIFO files in two-pass mode.";
2238 break;
2239  
2240 case FTAP_ERR_FILE_UNKNOWN_FORMAT:
2241 /* Seen only when opening a capture file for reading. */
2242 errmsg = "The file \"%s\" isn't a capture file in a format TFShark understands.";
2243 break;
2244  
2245 case FTAP_ERR_UNSUPPORTED:
2246 /* Seen only when opening a capture file for reading. */
2247 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2248 "The file \"%%s\" isn't a capture file in a format TFShark understands.\n"
2249 "(%s)", err_info);
2250 g_free(err_info);
2251 errmsg = errmsg_errno;
2252 break;
2253  
2254 case FTAP_ERR_CANT_WRITE_TO_PIPE:
2255 /* Seen only when opening a capture file for writing. */
2256 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2257 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
2258 "written to a pipe.", ftap_file_type_subtype_short_string(file_type));
2259 errmsg = errmsg_errno;
2260 break;
2261  
2262 case FTAP_ERR_UNSUPPORTED_FILE_TYPE:
2263 /* Seen only when opening a capture file for writing. */
2264 errmsg = "TFShark doesn't support writing capture files in that format.";
2265 break;
2266  
2267 case FTAP_ERR_UNSUPPORTED_ENCAP:
2268 if (for_writing) {
2269 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2270 "TFShark can't save this capture as a \"%s\" file.",
2271 ftap_file_type_subtype_short_string(file_type));
2272 } else {
2273 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2274 "The file \"%%s\" is a capture for a network type that TFShark doesn't support.\n"
2275 "(%s)", err_info);
2276 g_free(err_info);
2277 }
2278 errmsg = errmsg_errno;
2279 break;
2280  
2281 case FTAP_ERR_ENCAP_PER_RECORD_UNSUPPORTED:
2282 if (for_writing) {
2283 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2284 "TFShark can't save this capture as a \"%s\" file.",
2285 ftap_file_type_subtype_short_string(file_type));
2286 errmsg = errmsg_errno;
2287 } else
2288 errmsg = "The file \"%s\" is a capture for a network type that TFShark doesn't support.";
2289 break;
2290  
2291 case FTAP_ERR_BAD_FILE:
2292 /* Seen only when opening a capture file for reading. */
2293 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2294 "The file \"%%s\" appears to be damaged or corrupt.\n"
2295 "(%s)", err_info);
2296 g_free(err_info);
2297 errmsg = errmsg_errno;
2298 break;
2299  
2300 case FTAP_ERR_CANT_OPEN:
2301 if (for_writing)
2302 errmsg = "The file \"%s\" could not be created for some unknown reason.";
2303 else
2304 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
2305 break;
2306  
2307 case FTAP_ERR_SHORT_READ:
2308 errmsg = "The file \"%s\" appears to have been cut short"
2309 " in the middle of a packet or other data.";
2310 break;
2311  
2312 case FTAP_ERR_SHORT_WRITE:
2313 errmsg = "A full header couldn't be written to the file \"%s\".";
2314 break;
2315  
2316 case FTAP_ERR_COMPRESSION_NOT_SUPPORTED:
2317 errmsg = "This file type cannot be written as a compressed file.";
2318 break;
2319  
2320 case FTAP_ERR_DECOMPRESS:
2321 /* Seen only when opening a capture file for reading. */
2322 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2323 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
2324 "(%s)", err_info);
2325 g_free(err_info);
2326 errmsg = errmsg_errno;
2327 break;
2328  
2329 default:
2330 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
2331 "The file \"%%s\" could not be %s: %s.",
2332 for_writing ? "created" : "opened",
2333 ftap_strerror(err));
2334 errmsg = errmsg_errno;
2335 break;
2336 }
2337 } else
2338 #endif
2339 errmsg = file_open_error_message(err, for_writing);
2340 return errmsg;
2341 }
2342  
2343 /*
2344 * Open/create errors are reported with an console message in TFShark.
2345 */
2346 static void
2347 open_failure_message(const char *filename, int err, gboolean for_writing)
2348 {
2349 fprintf(stderr, "tfshark: ");
2350 fprintf(stderr, file_open_error_message(err, for_writing), filename);
2351 fprintf(stderr, "\n");
2352 }
2353  
2354  
2355 /*
2356 * General errors are reported with an console message in TFShark.
2357 */
2358 static void
2359 failure_message(const char *msg_format, va_list ap)
2360 {
2361 fprintf(stderr, "tfshark: ");
2362 vfprintf(stderr, msg_format, ap);
2363 fprintf(stderr, "\n");
2364 }
2365  
2366 /*
2367 * Read errors are reported with an console message in TFShark.
2368 */
2369 static void
2370 read_failure_message(const char *filename, int err)
2371 {
2372 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
2373 filename, g_strerror(err));
2374 }
2375  
2376 /*
2377 * Write errors are reported with an console message in TFShark.
2378 */
2379 static void
2380 write_failure_message(const char *filename, int err)
2381 {
2382 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
2383 filename, g_strerror(err));
2384 }
2385  
2386 /*
2387 * Report additional information for an error in command-line arguments.
2388 */
2389 static void
2390 failure_message_cont(const char *msg_format, va_list ap)
2391 {
2392 vfprintf(stderr, msg_format, ap);
2393 fprintf(stderr, "\n");
2394 }
2395  
2396 /*
2397 * Editor modelines - https://www.wireshark.org/tools/modelines.html
2398 *
2399 * Local variables:
2400 * c-basic-offset: 2
2401 * tab-width: 8
2402 * indent-tabs-mode: nil
2403 * End:
2404 *
2405 * vi: set shiftwidth=2 tabstop=8 expandtab:
2406 * :indentSize=2:tabSize=8:noTabs=true:
2407 */