5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
9 * Rawshark - Raw field extractor by Gerald Combs <gerald@wireshark.org>
10 * and Loris Degioanni <loris.degioanni@cacetech.com>
11 * Based on TShark, by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 * Rawshark does the following:
31 * - Opens a specified file or named pipe
32 * - Applies a specfied DLT or "decode as" encapsulation
33 * - Reads frames prepended with a libpcap packet header.
34 * - Prints a status line, followed by fields from a specified list.
60 #ifdef HAVE_SYS_STAT_H
61 # include <sys/stat.h>
64 #ifdef NEED_STRERROR_H
73 #include <epan/epan.h>
74 #include <epan/filesystem.h>
75 #include <epan/privileges.h>
76 #include <wsutil/file_util.h>
79 #include <epan/packet.h>
81 #include "disabled_protos.h"
82 #include <epan/prefs.h>
83 #include <epan/column.h>
85 #include <epan/addr_resolv.h>
87 #include "clopts_common.h"
88 #include "cmdarg_err.h"
89 #include "version_info.h"
90 #include <epan/conversation.h>
91 #include <epan/plugins.h>
93 #include "conditions.h"
94 #include "capture_stop_conditions.h"
95 #include "capture_ui_utils.h"
96 #include <epan/epan_dissect.h>
97 #include <epan/stat_cmd_args.h>
98 #include <epan/timestamp.h>
99 #include <epan/unicode-utils.h>
100 #include "epan/column-utils.h"
101 #include "epan/proto.h"
102 #include <epan/tap.h>
110 #include "capture-pcap-util.h"
113 #include "capture-wpcap.h"
114 #include "capture_errs.h"
116 #endif /* HAVE_LIBPCAP */
117 #include "epan/emem.h"
121 * This is the template for the decode as option; it is shared between the
122 * various functions that output the usage for this parameter.
124 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
126 static nstime_t first_ts;
127 static nstime_t prev_dis_ts;
128 static nstime_t prev_cap_ts;
129 static GString *comp_info_str, *runtime_info_str;
132 * The way the packet decode is to be written.
135 WRITE_TEXT, /* summary or detail text */
136 WRITE_XML /* PDML or PSML */
137 /* Add CSV and the like here */
139 static gboolean line_buffered;
140 static guint32 cum_bytes = 0;
141 static print_format_e print_format = PR_FMT_TEXT;
144 * Standard secondary message for unexpected errors.
146 static const char please_report[] =
147 "Please report this to the Wireshark developers";
149 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
150 static int load_cap_file(capture_file *cf);
151 static gboolean process_packet(capture_file *cf, gint64 offset,
152 const struct wtap_pkthdr *whdr, const guchar *pd);
153 static void show_print_file_io_error(int err);
155 static void open_failure_message(const char *filename, int err,
156 gboolean for_writing);
157 static void failure_message(const char *msg_format, va_list ap);
158 static void read_failure_message(const char *filename, int err);
159 static void protocolinfo_init(char *field);
160 static gboolean parse_field_string_format(char *format);
163 SF_NONE, /* No format (placeholder) */
164 SF_NAME, /* %D Field name / description */
165 SF_NUMVAL, /* %N Numeric value */
166 SF_STRVAL /* %S String value */
169 typedef struct string_fmt_s {
171 string_fmt_e format; /* Valid if plain is NULL */
177 dfilter_t *rfcodes[64];
179 dfilter_t *rfieldfcodes[64];
182 GPtrArray *string_fmts;
185 print_usage(gboolean print_ver)
192 "Rawshark " VERSION "%s\n"
193 "Dump and analyze network traffic.\n"
194 "See http://www.wireshark.org for more information.\n"
197 wireshark_svnversion, get_copyright_info());
201 fprintf(output, "\n");
202 fprintf(output, "Usage: rawshark [options] ...\n");
203 fprintf(output, "\n");
205 fprintf(output, "Input file:\n");
206 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
208 fprintf(output, "\n");
209 fprintf(output, "Processing:\n");
210 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
211 fprintf(output, " -F <field> field to display\n");
212 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
213 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
214 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
215 fprintf(output, " packet encapsulation or protocol\n");
217 /*fprintf(output, "\n");*/
218 fprintf(output, "Output:\n");
219 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval\n");
220 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
221 fprintf(output, " -l flush output after each packet\n");
223 fprintf(output, "\n");
224 fprintf(output, "Miscellaneous:\n");
225 fprintf(output, " -h display this help and exit\n");
226 fprintf(output, " -v display version info and exit\n");
227 fprintf(output, " -o <name>:<value> ... override preference setting\n");
231 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
232 const gchar *message _U_, gpointer user_data _U_)
237 * Open a pipe for raw input. This is a stripped-down version of
238 * pcap_loop.c:cap_pipe_open_live().
239 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
240 * @param pipe_name The name of the pipe or FIFO.
241 * @return A POSIX file descriptor on success, or -1 on failure.
244 raw_pipe_open(const char *pipe_name)
247 struct stat pipe_stat;
255 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
258 * XXX Rawshark blocks until we return
260 if (strcmp(pipe_name, "-") == 0) {
261 rfd = 0; /* read from stdin */
264 * This is needed to set the stdin pipe into binary mode, otherwise
265 * CR/LF are mangled...
267 _setmode(0, _O_BINARY);
271 if (ws_stat(pipe_name, &pipe_stat) < 0) {
272 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
273 "The capture session could not be initiated "
274 "due to error on pipe: %s", strerror(errno));
277 if (! S_ISFIFO(pipe_stat.st_mode)) {
278 if (S_ISCHR(pipe_stat.st_mode)) {
280 * Assume the user specified an interface on a system where
281 * interfaces are in /dev. Pretend we haven't seen it.
285 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
286 "The capture session could not be initiated because\n"
287 "\"%s\" is neither an interface nor a pipe", pipe_name);
291 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
293 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
294 "The capture session could not be initiated "
295 "due to error on pipe open: %s", strerror(errno));
299 #define PIPE_STR "\\pipe\\"
300 /* Under Windows, named pipes _must_ have the form
301 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
303 pncopy = g_strdup(pipe_name);
304 if (strstr(pncopy, "\\\\") == pncopy) {
305 pos = strchr(pncopy + 3, '\\');
306 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
313 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
314 "The capture session could not be initiated because\n"
315 "\"%s\" is neither an interface nor a pipe", pipe_name);
319 /* Wait for the pipe to appear */
321 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
322 OPEN_EXISTING, 0, NULL);
324 if (hPipe != INVALID_HANDLE_VALUE)
327 if (GetLastError() != ERROR_PIPE_BUSY) {
328 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
329 NULL, GetLastError(), 0, (LPTSTR) &err_str, 0, NULL);
330 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
331 "The capture session on \"%s\" could not be initiated "
332 "due to error on pipe open: pipe busy: %s (error %d)",
333 pipe_name, utf_16to8(err_str), GetLastError());
338 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
339 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
340 NULL, GetLastError(), 0, (LPTSTR) &err_str, 0, NULL);
341 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
342 "The capture session could not be initiated "
343 "due to error on pipe open: %s (error %d)",
344 utf_16to8(err_str), GetLastError());
350 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
352 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG,
353 "The capture session could not be initiated "
354 "due to error on pipe open: %s", strerror(errno));
364 * Parse a link-type argument of the form "encap:<pcap dlt>" or
365 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
366 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
367 * a protocol name, e.g. "http".
370 set_link_type(const char *lt_arg) {
371 char *spec_ptr = strchr(lt_arg, ':');
373 dissector_handle_t dhandle;
381 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
382 #ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
383 dlt_val = linktype_name_to_val(spec_ptr);
389 dlt_val = strtol(spec_ptr, NULL, 10);
390 if (errno != EINVAL && dlt_val >= 0) {
391 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
392 if (encap == WTAP_ENCAP_UNKNOWN) {
397 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
398 dhandle = find_dissector(spec_ptr);
400 encap = WTAP_ENCAP_USER0;
401 pref_str = g_string_new("uat:user_dlts:");
402 /* This must match the format used in the user_dlts file */
403 g_string_append_printf(pref_str,
404 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
406 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
407 g_string_free(pref_str, TRUE);
410 g_string_free(pref_str, TRUE);
418 main(int argc, char *argv[])
420 char *init_progfile_dir_error;
423 gboolean arg_error = FALSE;
429 char *gpf_path, *pf_path;
430 char *gdp_path, *dp_path;
431 int gpf_open_errno, gpf_read_errno;
432 int pf_open_errno, pf_read_errno;
433 int gdp_open_errno, gdp_read_errno;
434 int dp_open_errno, dp_read_errno;
436 gchar *pipe_name = NULL;
440 GLogLevelFlags log_flags;
441 GPtrArray *disp_fields = g_ptr_array_new();
444 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:S:t:v"
446 static const char optstring[] = OPTSTRING_INIT;
449 * Get credential information for later use.
451 get_credential_info();
454 * Clear the filters arrays
456 memset(rfilters, 0, sizeof(rfilters));
457 memset(rfcodes, 0, sizeof(rfcodes));
462 * Initialize our string format
464 string_fmts = g_ptr_array_new();
467 * Attempt to get the pathname of the executable file.
469 init_progfile_dir_error = init_progfile_dir(argv[0]);
470 if (init_progfile_dir_error != NULL) {
471 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
472 init_progfile_dir_error);
476 * Get credential information for later use.
478 get_credential_info();
480 /* nothing more than the standard GLib handler, but without a warning */
482 G_LOG_LEVEL_WARNING |
483 G_LOG_LEVEL_MESSAGE |
487 g_log_set_handler(NULL,
489 log_func_ignore, NULL /* user_data */);
490 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
492 log_func_ignore, NULL /* user_data */);
494 timestamp_set_type(TS_RELATIVE);
495 timestamp_set_precision(TS_PREC_AUTO);
497 /* Register all dissectors; we must do this before checking for the
498 "-G" flag, as the "-G" flag dumps information registered by the
499 dissectors, and we must do it before we read the preferences, in
500 case any dissectors register preferences. */
501 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
502 failure_message, open_failure_message, read_failure_message);
504 /* Now register the preferences for any non-dissector modules.
505 We must do that before we read the preferences as well. */
506 prefs_register_modules();
508 /* Set the C-language locale to the native environment. */
509 setlocale(LC_ALL, "");
511 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
512 &pf_open_errno, &pf_read_errno, &pf_path);
513 if (gpf_path != NULL) {
514 if (gpf_open_errno != 0) {
515 cmdarg_err("Can't open global preferences file \"%s\": %s.",
516 pf_path, strerror(gpf_open_errno));
518 if (gpf_read_errno != 0) {
519 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
520 pf_path, strerror(gpf_read_errno));
523 if (pf_path != NULL) {
524 if (pf_open_errno != 0) {
525 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
526 strerror(pf_open_errno));
528 if (pf_read_errno != 0) {
529 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
530 pf_path, strerror(pf_read_errno));
536 /* Set the name resolution code's flags from the preferences. */
537 g_resolv_flags = prefs->name_resolve;
539 /* Read the disabled protocols file. */
540 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
541 &dp_path, &dp_open_errno, &dp_read_errno);
542 if (gdp_path != NULL) {
543 if (gdp_open_errno != 0) {
544 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
545 gdp_path, strerror(gdp_open_errno));
547 if (gdp_read_errno != 0) {
548 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
549 gdp_path, strerror(gdp_read_errno));
553 if (dp_path != NULL) {
554 if (dp_open_errno != 0) {
556 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
557 strerror(dp_open_errno));
559 if (dp_read_errno != 0) {
561 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
562 strerror(dp_read_errno));
568 /* Load Wpcap, if possible */
572 init_cap_file(&cfile);
574 /* Assemble the compile-time version information string */
575 comp_info_str = g_string_new("Compiled ");
576 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
578 /* Assemble the run-time version information string */
579 runtime_info_str = g_string_new("Running ");
580 get_runtime_version_info(runtime_info_str, NULL);
582 /* Print format defaults to this. */
583 print_format = PR_FMT_TEXT;
585 /* Initialize our encapsulation type */
586 encap = WTAP_ENCAP_UNKNOWN;
588 /* Now get our args */
589 /* XXX - We should probably have an option to dump libpcap link types */
590 while ((opt = getopt(argc, argv, optstring)) != -1) {
592 case 'd': /* Payload type */
593 if (!set_link_type(optarg)) {
594 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
598 case 'F': /* Read field to display */
599 g_ptr_array_add(disp_fields, g_strdup(optarg));
601 case 'h': /* Print help and exit */
605 case 'l': /* "Line-buffer" standard output */
606 /* This isn't line-buffering, strictly speaking, it's just
607 flushing the standard output after the information for
608 each packet is printed; however, that should be good
609 enough for all the purposes to which "-l" is put (and
610 is probably actually better for "-V", as it does fewer
613 See the comment in "process_packet()" for an explanation of
614 why we do that, and why we don't just use "setvbuf()" to
615 make the standard output line-buffered (short version: in
616 Windows, "line-buffered" is the same as "fully-buffered",
617 and the output buffer is only flushed when it fills up). */
618 line_buffered = TRUE;
620 case 'n': /* No name resolution */
621 g_resolv_flags = RESOLV_NONE;
623 case 'N': /* Select what types of addresses/port #s to resolve */
624 if (g_resolv_flags == RESOLV_ALL)
625 g_resolv_flags = RESOLV_NONE;
626 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
627 if (badopt != '\0') {
628 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
633 case 'o': /* Override preference from command line */
634 switch (prefs_set_pref(optarg)) {
639 case PREFS_SET_SYNTAX_ERR:
640 cmdarg_err("Invalid -o flag \"%s\"", optarg);
644 case PREFS_SET_NO_SUCH_PREF:
645 case PREFS_SET_OBSOLETE:
646 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
651 case 'r': /* Read capture file xxx */
652 pipe_name = g_strdup(optarg);
654 case 'R': /* Read file filter */
655 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
656 rfilters[n_rfilters++] = optarg;
659 cmdarg_err("Too many display filters");
663 case 'S': /* Print string representations */
664 if (!parse_field_string_format(optarg)) {
665 cmdarg_err("Invalid field string format");
669 case 't': /* Time stamp type */
670 if (strcmp(optarg, "r") == 0)
671 timestamp_set_type(TS_RELATIVE);
672 else if (strcmp(optarg, "a") == 0)
673 timestamp_set_type(TS_ABSOLUTE);
674 else if (strcmp(optarg, "ad") == 0)
675 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
676 else if (strcmp(optarg, "d") == 0)
677 timestamp_set_type(TS_DELTA);
678 else if (strcmp(optarg, "dd") == 0)
679 timestamp_set_type(TS_DELTA_DIS);
680 else if (strcmp(optarg, "e") == 0)
681 timestamp_set_type(TS_EPOCH);
683 cmdarg_err("Invalid time stamp type \"%s\"",
685 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
686 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
690 case 'v': /* Show version and exit */
691 printf("Rawshark " VERSION "%s\n"
698 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
699 runtime_info_str->str);
704 case '?': /* Bad flag - print usage message */
711 /* Initialize our display fields */
712 for (fc = 0; fc < disp_fields->len; fc++) {
713 protocolinfo_init(g_ptr_array_index(disp_fields, fc));
715 g_ptr_array_free(disp_fields, TRUE);
719 /* If no capture filter or read filter has been specified, and there are
720 still command-line arguments, treat them as the tokens of a capture
721 filter (if no "-r" flag was specified) or a read filter (if a "-r"
722 flag was specified. */
724 if (pipe_name != NULL) {
725 if (n_rfilters != 0) {
726 cmdarg_err("Read filters were specified both with \"-R\" "
727 "and with additional command-line arguments");
730 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
734 /* Make sure we got a dissector handle for our payload. */
735 if (encap == WTAP_ENCAP_UNKNOWN) {
736 cmdarg_err("No valid payload dissector specified.");
747 /* Start windows sockets */
748 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
751 /* Notify all registered modules that have had any of their preferences
752 changed either from one of the preferences file or from the command
753 line that their preferences have changed. */
756 /* At this point MATE will have registered its field array so we can
757 have a tap filter with one of MATE's late-registered fields as part
758 of the filter. We can now process all the "-z" arguments. */
759 start_requested_stats();
761 /* disabled protocols as per configuration file */
762 if (gdp_path == NULL && dp_path == NULL) {
763 set_disabled_protos_list();
766 /* Build the column format array */
767 col_setup(&cfile.cinfo, prefs->num_cols);
768 for (i = 0; i < cfile.cinfo.num_cols; i++) {
769 cfile.cinfo.col_fmt[i] = get_column_format(i);
770 cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
771 cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
773 get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
774 cfile.cinfo.col_data[i] = NULL;
775 if (cfile.cinfo.col_fmt[i] == COL_INFO)
776 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
778 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
779 cfile.cinfo.col_fence[i] = 0;
780 cfile.cinfo.col_expr.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
781 cfile.cinfo.col_expr.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
784 for (i = 0; i < cfile.cinfo.num_cols; i++) {
787 for (j = 0; j < NUM_COL_FMTS; j++) {
788 if (!cfile.cinfo.fmt_matx[i][j])
791 if (cfile.cinfo.col_first[j] == -1)
792 cfile.cinfo.col_first[j] = i;
793 cfile.cinfo.col_last[j] = i;
797 if (n_rfilters != 0) {
798 for (i = 0; i < n_rfilters; i++) {
799 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
800 cmdarg_err("%s", dfilter_error_msg);
810 * We're reading a pipe (or capture file).
814 * Immediately relinquish any special privileges we have; we must not
815 * be allowed to read any capture files the user running Rawshark
818 relinquish_special_privs_perm();
820 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
825 /* Set timestamp precision; there should arguably be a command-line
826 option to let the user set this. */
828 switch(wtap_file_tsprecision(cfile.wth)) {
829 case(WTAP_FILE_TSPREC_SEC):
830 timestamp_set_precision(TS_PREC_AUTO_SEC);
832 case(WTAP_FILE_TSPREC_DSEC):
833 timestamp_set_precision(TS_PREC_AUTO_DSEC);
835 case(WTAP_FILE_TSPREC_CSEC):
836 timestamp_set_precision(TS_PREC_AUTO_CSEC);
838 case(WTAP_FILE_TSPREC_MSEC):
839 timestamp_set_precision(TS_PREC_AUTO_MSEC);
841 case(WTAP_FILE_TSPREC_USEC):
842 timestamp_set_precision(TS_PREC_AUTO_USEC);
844 case(WTAP_FILE_TSPREC_NSEC):
845 timestamp_set_precision(TS_PREC_AUTO_NSEC);
848 g_assert_not_reached();
851 timestamp_set_precision(TS_PREC_AUTO_USEC);
854 /* Process the packets in the file */
855 err = load_cap_file(&cfile);
862 /* If you want to capture live packets, use TShark. */
863 cmdarg_err("Input file or pipe name not specified.");
873 * Read data from a raw pipe. The "raw" data consists of a libpcap
874 * packet header followed by the payload.
875 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
876 * of thing you want to use in Windows.
877 * @param phdr [OUT] Packet header information.
878 * @param err [OUT] Error indicator. Uses wiretap values.
879 * @param err_info [OUT] Error message.
880 * @param data_offset [OUT] data offset in the pipe.
881 * @return TRUE on success, FALSE on failure.
884 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, gchar **err_info, gint64 *data_offset) {
885 struct pcap_pkthdr hdr;
887 int bytes_needed = sizeof(struct pcap_pkthdr);
888 gchar err_str[1024+1];
890 /* Copied from capture_loop.c */
891 while (bytes_needed > 0) {
892 bytes_read = read(fd, &hdr, bytes_needed);
893 if (bytes_read == 0) {
896 } else if (bytes_read < 0) {
897 *err = WTAP_ERR_CANT_READ;
898 *err_info = "Error reading header from pipe";
901 bytes_needed -= bytes_read;
902 *data_offset += bytes_read;
906 phdr->ts.secs = hdr.ts.tv_sec;
907 phdr->ts.nsecs = hdr.ts.tv_usec * 1000;
908 phdr->caplen = bytes_needed = hdr.caplen;
910 phdr->pkt_encap = encap;
913 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
914 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
915 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
916 printf("len: %d (%04x)\n", hdr.len, hdr.len);
918 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
919 *err = WTAP_ERR_BAD_RECORD;
920 g_snprintf(err_str, 1024, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
925 while (bytes_needed > 0) {
926 bytes_read = read(fd, pd, bytes_needed);
927 if (bytes_read == 0) {
928 *err = WTAP_ERR_SHORT_READ;
929 *err_info = "Got zero bytes reading data from pipe";
931 } else if (bytes_read < 0) {
932 *err = WTAP_ERR_CANT_READ;
933 *err_info = "Error reading data from pipe";
936 bytes_needed -= bytes_read;
937 *data_offset += bytes_read;
943 load_cap_file(capture_file *cf)
947 gint64 data_offset = 0;
948 char *save_file_string = NULL;
949 struct wtap_pkthdr phdr;
950 guchar pd[WTAP_MAX_PACKET_SIZE];
952 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
953 process_packet(cf, data_offset, &phdr, pd);
957 /* Print a message noting that the read failed somewhere along the line. */
960 case WTAP_ERR_UNSUPPORTED_ENCAP:
961 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
962 cf->filename, err_info);
965 case WTAP_ERR_CANT_READ:
966 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
970 case WTAP_ERR_SHORT_READ:
971 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
975 case WTAP_ERR_BAD_RECORD:
976 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
977 cf->filename, err_info);
981 cmdarg_err("An error occurred while reading \"%s\": %s.",
982 cf->filename, wtap_strerror(err));
987 if (save_file_string != NULL)
988 g_free(save_file_string);
994 fill_in_fdata(frame_data *fdata, capture_file *cf,
995 const struct wtap_pkthdr *phdr, gint64 offset)
1000 fdata->num = cf->count;
1001 fdata->pkt_len = phdr->len;
1002 cum_bytes += phdr->len;
1003 fdata->cum_bytes = cum_bytes;
1004 fdata->cap_len = phdr->caplen;
1005 fdata->file_off = offset;
1006 fdata->lnk_t = phdr->pkt_encap;
1007 fdata->abs_ts.secs = phdr->ts.secs;
1008 fdata->abs_ts.nsecs = phdr->ts.nsecs;
1009 fdata->flags.passed_dfilter = 0;
1010 fdata->flags.encoding = CHAR_ASCII;
1011 fdata->flags.visited = 0;
1012 fdata->flags.marked = 0;
1013 fdata->flags.ref_time = 0;
1014 fdata->color_filter = NULL;
1016 /* If we don't have the time stamp of the first packet in the
1017 capture, it's because this is the first packet. Save the time
1018 stamp of this packet as the time stamp of the first packet. */
1019 if (nstime_is_unset(&first_ts)) {
1020 first_ts = fdata->abs_ts;
1023 /* If we don't have the time stamp of the previous captured packet,
1024 it's because this is the first packet. Save the time
1025 stamp of this packet as the time stamp of the previous captured
1027 if (nstime_is_unset(&prev_cap_ts)) {
1028 prev_cap_ts = fdata->abs_ts;
1031 /* Get the time elapsed between the first packet and this packet. */
1032 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
1034 /* If it's greater than the current elapsed time, set the elapsed time
1035 to it (we check for "greater than" so as not to be confused by
1036 time moving backwards). */
1037 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
1038 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
1039 cf->elapsed_time = fdata->rel_ts;
1042 /* If we don't have the time stamp of the previous displayed packet,
1043 it's because this is the first packet that's being displayed. Save the time
1044 stamp of this packet as the time stamp of the previous displayed
1046 if (nstime_is_unset(&prev_dis_ts))
1047 prev_dis_ts = fdata->abs_ts;
1049 /* Get the time elapsed between the previous displayed packet and
1051 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
1053 /* Get the time elapsed between the previous captured packet and
1055 nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
1056 prev_cap_ts = fdata->abs_ts;
1059 /* Free up all data attached to a "frame_data" structure. */
1061 clear_fdata(frame_data *fdata)
1064 g_slist_free(fdata->pfd);
1068 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
1072 gboolean create_proto_tree;
1073 epan_dissect_t *edt;
1075 union wtap_pseudo_header pseudo_header;
1080 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1081 packets to process. We spit out a line with the timestamp and the text "void"
1083 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1084 (unsigned long int)whdr->ts.secs,
1085 (unsigned long int)whdr->ts.nsecs);
1092 memset(&pseudo_header, 0, sizeof(pseudo_header));
1094 /* Count this packet. */
1097 /* If we're going to print packet information, or we're going to
1098 run a read filter, or we're going to process taps, set up to
1099 do a dissection and do so. */
1100 fill_in_fdata(&fdata, cf, whdr, offset);
1103 create_proto_tree = TRUE;
1105 /* The protocol tree will be "visible", i.e., printed, only if we're
1106 printing packet details, which is true if we're in verbose mode ("verbose"
1108 edt = epan_dissect_new(create_proto_tree, FALSE);
1110 /* If we're running a read filter, prime the epan_dissect_t with that
1112 if (n_rfilters > 0) {
1113 for(i = 0; i < n_rfcodes; i++) {
1114 epan_dissect_prime_dfilter(edt, rfcodes[i]);
1118 tap_queue_init(edt);
1120 printf("%lu", (unsigned long int)cf->count);
1122 /* We only need the columns if we're printing packet info but we're
1123 *not* verbose; in verbose mode, we print the protocol tree, not
1124 the protocol summary. */
1125 epan_dissect_run(edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1127 tap_push_tapped_queue(edt);
1129 for(i = 0; i < n_rfilters; i++) {
1130 /* Run the read filter if we have one. */
1132 passed = dfilter_apply_edt(rfcodes[i], edt);
1136 /* Print a one-line summary */
1137 printf(" %u", passed ? 1 : 0);
1142 /* The ANSI C standard does not appear to *require* that a line-buffered
1143 stream be flushed to the host environment whenever a newline is
1144 written, it just says that, on such a stream, characters "are
1145 intended to be transmitted to or from the host environment as a
1146 block when a new-line character is encountered".
1148 The Visual C++ 6.0 C implementation doesn't do what is intended;
1149 even if you set a stream to be line-buffered, it still doesn't
1150 flush the buffer at the end of every line.
1152 So, if the "-l" flag was specified, we flush the standard output
1153 at the end of a packet. This will do the right thing if we're
1154 printing packet summary lines, and, as we print the entire protocol
1155 tree for a single packet without waiting for anything to happen,
1156 it should be as good as line-buffered mode if we're printing
1157 protocol trees. (The whole reason for the "-l" flag in either
1158 tcpdump or Rawshark is to allow the output of a live capture to
1159 be piped to a program or script and to have that script see the
1160 information for the packet as soon as it's printed, rather than
1161 having to wait until a standard I/O buffer fills up. */
1165 if (ferror(stdout)) {
1166 show_print_file_io_error(errno);
1170 epan_dissect_free(edt);
1171 clear_fdata(&fdata);
1176 /****************************************************************************************
1177 * FIELD EXTRACTION ROUTINES
1178 ****************************************************************************************/
1179 typedef struct _pci_t {
1185 char* ftenum_to_string(header_field_info *hfi)
1191 if (string_fmts->len > 0 && hfi->strings) {
1199 return "FT_PROTOCOL";
1201 return "FT_BOOLEAN";
1226 case FT_ABSOLUTE_TIME:
1227 return "FT_ABSOLUTE_TIME";
1228 case FT_RELATIVE_TIME:
1229 return "FT_RELATIVE_TIME";
1233 return "FT_STRINGZ";
1234 case FT_UINT_STRING:
1235 return "FT_UINT_STRING";
1241 return "FT_UINT_BYTES";
1249 return "FT_FRAMENUM";
1257 return "FT_NUM_TYPES";
1263 char* base_display_e_to_string(base_display_e bd)
1275 return "BASE_DEC_HEX";
1277 return "BASE_HEX_DEC";
1284 * Copied from various parts of proto.c
1286 #define FIELD_STR_INIT_LEN 256
1287 #define cVALS(x) (const value_string*)(x)
1288 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1290 header_field_info *hfinfo;
1291 static char *fs_buf = NULL;
1292 char *fs_ptr = fs_buf;
1293 static GString *label_s = NULL;
1294 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1299 const true_false_string *tfstring = &tfs_true_false;
1301 hfinfo = finfo->hfinfo;
1304 fs_buf = g_malloc(fs_buf_len + 1);
1309 label_s = g_string_new("");
1312 if(finfo->value.ftype->val_to_string_repr)
1315 * this field has an associated value,
1318 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1319 while (fs_buf_len < fs_len) {
1321 fs_buf = g_realloc(fs_buf, fs_buf_len + 1);
1324 fvalue_to_string_repr(&finfo->value,
1328 /* String types are quoted. Remove them. */
1329 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1330 fs_buf[fs_len - 1] = '\0';
1335 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1336 g_string_truncate(label_s, 0);
1337 for (i = 0; i < string_fmts->len; i++) {
1338 sf = g_ptr_array_index(string_fmts, i);
1340 g_string_append(label_s, sf->plain);
1342 switch (sf->format) {
1344 g_string_append(label_s, hfinfo->name);
1347 g_string_append(label_s, fs_ptr);
1350 switch(hfinfo->type) {
1352 uvalue = fvalue_get_uinteger(&finfo->value);
1353 tfstring = (const struct true_false_string*) hfinfo->strings;
1354 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1360 DISSECTOR_ASSERT(!hfinfo->bitmask);
1361 svalue = fvalue_get_sinteger(&finfo->value);
1362 if (hfinfo->display & BASE_RANGE_STRING) {
1363 g_string_append(label_s, rval_to_str(svalue, hfinfo->strings, "Unknown"));
1365 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1371 uvalue = fvalue_get_uinteger(&finfo->value);
1372 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1373 g_string_append(label_s, rval_to_str(uvalue, hfinfo->strings, "Unknown"));
1375 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1387 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1391 if(finfo->value.ftype->val_to_string_repr)
1393 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1398 * This field doesn't have an associated value,
1402 printf(" %u=\"n.a.\"", cmd_line_index);
1407 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1413 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1420 * Print each occurrence of the field
1422 for (i = 0; i < gp->len; i++) {
1423 print_field_value(gp->pdata[i], rs->cmd_line_index);
1429 int g_cmd_line_index = 0;
1432 * field must be persistent - we don't g_strdup() it below
1435 protocolinfo_init(char *field)
1438 header_field_info *hfi;
1439 GString *error_string;
1441 hfi=proto_registrar_get_byname(field);
1443 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1447 printf("%u %s %s - ",
1449 ftenum_to_string(hfi),
1450 base_display_e_to_string(hfi->display));
1452 rs=g_malloc(sizeof(pci_t));
1453 rs->hf_index=hfi->id;
1455 rs->cmd_line_index = g_cmd_line_index++;
1457 error_string=register_tap_listener("frame", rs, rs->filter, NULL, protocolinfo_packet, NULL);
1459 /* error, we failed to attach to the tap. complain and clean up */
1460 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1462 g_string_free(error_string, TRUE);
1473 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1474 * and fill in string_fmt_parts.
1478 add_string_fmt(string_fmt_e format, gchar *plain) {
1479 string_fmt_t *sf = g_malloc(sizeof(string_fmt_t));
1481 sf->format = format;
1482 sf->plain = g_strdup(plain);
1484 g_ptr_array_add(string_fmts, sf);
1488 parse_field_string_format(gchar *format) {
1489 GString *plain_s = g_string_new("");
1497 len = strlen(format);
1498 g_ptr_array_set_size(string_fmts, 0);
1501 if (format[pos] == '%') {
1502 if (pos >= len) { /* There should always be a following character */
1506 if (plain_s->len > 0) {
1507 add_string_fmt(SF_NONE, plain_s->str);
1508 g_string_truncate(plain_s, 0);
1510 switch (format[pos]) {
1512 add_string_fmt(SF_NAME, NULL);
1515 add_string_fmt(SF_NUMVAL, NULL);
1518 add_string_fmt(SF_STRVAL, NULL);
1521 g_string_append_c(plain_s, '%');
1523 default: /* Invalid format */
1527 g_string_append_c(plain_s, format[pos]);
1532 if (plain_s->len > 0) {
1533 add_string_fmt(SF_NONE, plain_s->str);
1535 g_string_free(plain_s, TRUE);
1539 /****************************************************************************************
1540 * END OF FIELD EXTRACTION ROUTINES
1541 ****************************************************************************************/
1544 show_print_file_io_error(int err)
1549 cmdarg_err("Not all the packets could be printed because there is "
1550 "no space left on the file system.");
1555 cmdarg_err("Not all the packets could be printed because you are "
1556 "too close to, or over your disk quota.");
1561 cmdarg_err("An error occurred while printing packets: %s.",
1568 * Open/create errors are reported with an console message in Rawshark.
1571 open_failure_message(const char *filename, int err, gboolean for_writing)
1573 fprintf(stderr, "rawshark: ");
1574 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1575 fprintf(stderr, "\n");
1579 raw_cf_open(capture_file *cf, const char *fname)
1581 if ((fd = raw_pipe_open(fname)) < 0)
1584 /* The open succeeded. Fill in the information for this file. */
1586 /* Initialize all data structures used for dissection. */
1590 cf->f_datalen = 0; /* not used, but set it anyway */
1592 /* Set the file name because we need it to set the follow stream filter.
1593 XXX - is that still true? We need it for other reasons, though,
1595 cf->filename = g_strdup(fname);
1597 /* Indicate whether it's a permanent or temporary file. */
1598 cf->is_tempfile = FALSE;
1600 /* If it's a temporary capture buffer file, mark it as not saved. */
1601 cf->user_saved = FALSE;
1603 cf->cd_t = WTAP_FILE_UNKNOWN;
1605 cf->drops_known = FALSE;
1607 cf->has_snap = FALSE;
1608 cf->snap = WTAP_MAX_PACKET_SIZE;
1609 nstime_set_zero(&cf->elapsed_time);
1610 nstime_set_unset(&first_ts);
1611 nstime_set_unset(&prev_dis_ts);
1612 nstime_set_unset(&prev_cap_ts);
1619 * General errors are reported with an console message in Rawshark.
1622 failure_message(const char *msg_format, va_list ap)
1624 fprintf(stderr, "rawshark: ");
1625 vfprintf(stderr, msg_format, ap);
1626 fprintf(stderr, "\n");
1630 * Read errors are reported with an console message in Rawshark.
1633 read_failure_message(const char *filename, int err)
1635 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1636 filename, strerror(err));
1640 * Report an error in command-line arguments.
1643 cmdarg_err(const char *fmt, ...)
1648 fprintf(stderr, "rawshark: ");
1649 vfprintf(stderr, fmt, ap);
1650 fprintf(stderr, "\n");
1655 * Report additional information for an error in command-line arguments.
1658 cmdarg_err_cont(const char *fmt, ...)
1663 vfprintf(stderr, fmt, ap);
1664 fprintf(stderr, "\n");
1669 /****************************************************************************************************************/
1670 /* other "dummies" */
1672 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1674 /* shouldn't happen */
1675 g_assert_not_reached();
1684 * indent-tabs-mode: tabs
1687 * ex: set shiftwidth=4 tabstop=4 noexpandtab
1688 * :indentSize=4:tabSize=4:noTabs=false: