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 <wsutil/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/plugins.h>
92 #include "conditions.h"
93 #include "capture_stop_conditions.h"
94 #include "capture_ui_utils.h"
95 #include <epan/epan_dissect.h>
96 #include <epan/stat_cmd_args.h>
97 #include <epan/timestamp.h>
98 #include <wsutil/unicode-utils.h>
99 #include "epan/column-utils.h"
100 #include "epan/proto.h"
101 #include <epan/tap.h>
109 #include "capture-pcap-util.h"
112 #include "capture-wpcap.h"
113 #include "capture_errs.h"
115 #endif /* HAVE_LIBPCAP */
119 * This is the template for the decode as option; it is shared between the
120 * various functions that output the usage for this parameter.
122 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
124 static nstime_t first_ts;
125 static nstime_t prev_dis_ts;
126 static nstime_t prev_cap_ts;
127 static GString *comp_info_str, *runtime_info_str;
130 * The way the packet decode is to be written.
133 WRITE_TEXT, /* summary or detail text */
134 WRITE_XML /* PDML or PSML */
135 /* Add CSV and the like here */
137 static gboolean line_buffered;
138 static guint32 cum_bytes = 0;
139 static print_format_e print_format = PR_FMT_TEXT;
142 * Standard secondary message for unexpected errors.
144 static const char please_report[] =
145 "Please report this to the Wireshark developers";
147 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
148 static int load_cap_file(capture_file *cf);
149 static gboolean process_packet(capture_file *cf, gint64 offset,
150 const struct wtap_pkthdr *whdr, const guchar *pd);
151 static void show_print_file_io_error(int err);
153 static void open_failure_message(const char *filename, int err,
154 gboolean for_writing);
155 static void failure_message(const char *msg_format, va_list ap);
156 static void read_failure_message(const char *filename, int err);
157 static void write_failure_message(const char *filename, int err);
158 static void protocolinfo_init(char *field);
159 static gboolean parse_field_string_format(char *format);
162 SF_NONE, /* No format (placeholder) */
163 SF_NAME, /* %D Field name / description */
164 SF_NUMVAL, /* %N Numeric value */
165 SF_STRVAL /* %S String value */
168 typedef struct string_fmt_s {
170 string_fmt_e format; /* Valid if plain is NULL */
176 dfilter_t *rfcodes[64];
178 dfilter_t *rfieldfcodes[64];
181 GPtrArray *string_fmts;
184 print_usage(gboolean print_ver)
191 "Rawshark " VERSION "%s\n"
192 "Dump and analyze network traffic.\n"
193 "See http://www.wireshark.org for more information.\n"
196 wireshark_svnversion, get_copyright_info());
200 fprintf(output, "\n");
201 fprintf(output, "Usage: rawshark [options] ...\n");
202 fprintf(output, "\n");
204 fprintf(output, "Input file:\n");
205 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
207 fprintf(output, "\n");
208 fprintf(output, "Processing:\n");
209 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
210 fprintf(output, " -F <field> field to display\n");
211 fprintf(output, " -s skip PCAP header on input\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;
256 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
259 * XXX Rawshark blocks until we return
261 if (strcmp(pipe_name, "-") == 0) {
262 rfd = 0; /* read from stdin */
265 * This is needed to set the stdin pipe into binary mode, otherwise
266 * CR/LF are mangled...
268 _setmode(0, _O_BINARY);
272 if (ws_stat(pipe_name, &pipe_stat) < 0) {
273 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
274 pipe_name, 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 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
290 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
292 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
293 pipe_name, strerror(errno));
297 #define PIPE_STR "\\pipe\\"
298 /* Under Windows, named pipes _must_ have the form
299 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
301 pncopy = g_strdup(pipe_name);
302 if (strstr(pncopy, "\\\\") == pncopy) {
303 pos = strchr(pncopy + 3, '\\');
304 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
311 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
316 /* Wait for the pipe to appear */
318 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
319 OPEN_EXISTING, 0, NULL);
321 if (hPipe != INVALID_HANDLE_VALUE)
324 err = GetLastError();
325 if (err != ERROR_PIPE_BUSY) {
326 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
327 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
328 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
329 pipe_name, utf_16to8(err_str), err);
334 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
335 err = GetLastError();
336 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
337 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
338 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
339 pipe_name, utf_16to8(err_str), err);
345 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
347 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
348 pipe_name, strerror(errno));
358 * Parse a link-type argument of the form "encap:<pcap dlt>" or
359 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
360 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
361 * a protocol name, e.g. "http".
364 set_link_type(const char *lt_arg) {
365 char *spec_ptr = strchr(lt_arg, ':');
369 dissector_handle_t dhandle;
377 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
378 dlt_val = linktype_name_to_val(spec_ptr);
381 val = strtol(spec_ptr, &p, 10);
382 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
387 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
388 if (encap == WTAP_ENCAP_UNKNOWN) {
392 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
393 dhandle = find_dissector(spec_ptr);
395 encap = WTAP_ENCAP_USER0;
396 pref_str = g_string_new("uat:user_dlts:");
397 /* This must match the format used in the user_dlts file */
398 g_string_append_printf(pref_str,
399 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
401 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
402 g_string_free(pref_str, TRUE);
405 g_string_free(pref_str, TRUE);
413 main(int argc, char *argv[])
415 char *init_progfile_dir_error;
418 gboolean arg_error = FALSE;
424 char *gpf_path, *pf_path;
425 char *gdp_path, *dp_path;
426 int gpf_open_errno, gpf_read_errno;
427 int pf_open_errno, pf_read_errno;
428 int gdp_open_errno, gdp_read_errno;
429 int dp_open_errno, dp_read_errno;
431 gchar *pipe_name = NULL;
435 GLogLevelFlags log_flags;
436 GPtrArray *disp_fields = g_ptr_array_new();
438 gboolean skip_pcap_header = FALSE;
440 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:sS:t:v"
442 static const char optstring[] = OPTSTRING_INIT;
445 * Get credential information for later use.
447 get_credential_info();
450 * Clear the filters arrays
452 memset(rfilters, 0, sizeof(rfilters));
453 memset(rfcodes, 0, sizeof(rfcodes));
458 * Initialize our string format
460 string_fmts = g_ptr_array_new();
463 * Attempt to get the pathname of the executable file.
465 init_progfile_dir_error = init_progfile_dir(argv[0], main);
466 if (init_progfile_dir_error != NULL) {
467 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
468 init_progfile_dir_error);
472 * Get credential information for later use.
474 get_credential_info();
476 /* nothing more than the standard GLib handler, but without a warning */
478 G_LOG_LEVEL_WARNING |
479 G_LOG_LEVEL_MESSAGE |
483 g_log_set_handler(NULL,
485 log_func_ignore, NULL /* user_data */);
486 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
488 log_func_ignore, NULL /* user_data */);
490 timestamp_set_type(TS_RELATIVE);
491 timestamp_set_precision(TS_PREC_AUTO);
493 /* Register all dissectors; we must do this before checking for the
494 "-G" flag, as the "-G" flag dumps information registered by the
495 dissectors, and we must do it before we read the preferences, in
496 case any dissectors register preferences. */
497 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
498 failure_message, open_failure_message, read_failure_message,
499 write_failure_message);
501 /* Now register the preferences for any non-dissector modules.
502 We must do that before we read the preferences as well. */
503 prefs_register_modules();
505 /* Set the C-language locale to the native environment. */
506 setlocale(LC_ALL, "");
508 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
509 &pf_open_errno, &pf_read_errno, &pf_path);
510 if (gpf_path != NULL) {
511 if (gpf_open_errno != 0) {
512 cmdarg_err("Can't open global preferences file \"%s\": %s.",
513 pf_path, strerror(gpf_open_errno));
515 if (gpf_read_errno != 0) {
516 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
517 pf_path, strerror(gpf_read_errno));
520 if (pf_path != NULL) {
521 if (pf_open_errno != 0) {
522 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
523 strerror(pf_open_errno));
525 if (pf_read_errno != 0) {
526 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
527 pf_path, strerror(pf_read_errno));
533 /* Set the name resolution code's flags from the preferences. */
534 g_resolv_flags = prefs->name_resolve;
536 /* Read the disabled protocols file. */
537 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
538 &dp_path, &dp_open_errno, &dp_read_errno);
539 if (gdp_path != NULL) {
540 if (gdp_open_errno != 0) {
541 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
542 gdp_path, strerror(gdp_open_errno));
544 if (gdp_read_errno != 0) {
545 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
546 gdp_path, strerror(gdp_read_errno));
550 if (dp_path != NULL) {
551 if (dp_open_errno != 0) {
553 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
554 strerror(dp_open_errno));
556 if (dp_read_errno != 0) {
558 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
559 strerror(dp_read_errno));
565 /* Load Wpcap, if possible */
569 init_cap_file(&cfile);
571 /* Assemble the compile-time version information string */
572 comp_info_str = g_string_new("Compiled ");
573 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
575 /* Assemble the run-time version information string */
576 runtime_info_str = g_string_new("Running ");
577 get_runtime_version_info(runtime_info_str, NULL);
579 /* Print format defaults to this. */
580 print_format = PR_FMT_TEXT;
582 /* Initialize our encapsulation type */
583 encap = WTAP_ENCAP_UNKNOWN;
585 /* Now get our args */
586 /* XXX - We should probably have an option to dump libpcap link types */
587 while ((opt = getopt(argc, argv, optstring)) != -1) {
589 case 'd': /* Payload type */
590 if (!set_link_type(optarg)) {
591 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
595 case 'F': /* Read field to display */
596 g_ptr_array_add(disp_fields, g_strdup(optarg));
598 case 'h': /* Print help and exit */
602 case 'l': /* "Line-buffer" standard output */
603 /* This isn't line-buffering, strictly speaking, it's just
604 flushing the standard output after the information for
605 each packet is printed; however, that should be good
606 enough for all the purposes to which "-l" is put (and
607 is probably actually better for "-V", as it does fewer
610 See the comment in "process_packet()" for an explanation of
611 why we do that, and why we don't just use "setvbuf()" to
612 make the standard output line-buffered (short version: in
613 Windows, "line-buffered" is the same as "fully-buffered",
614 and the output buffer is only flushed when it fills up). */
615 line_buffered = TRUE;
617 case 'n': /* No name resolution */
618 g_resolv_flags = RESOLV_NONE;
620 case 'N': /* Select what types of addresses/port #s to resolve */
621 if (g_resolv_flags == RESOLV_ALL)
622 g_resolv_flags = RESOLV_NONE;
623 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
624 if (badopt != '\0') {
625 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
630 case 'o': /* Override preference from command line */
631 switch (prefs_set_pref(optarg)) {
636 case PREFS_SET_SYNTAX_ERR:
637 cmdarg_err("Invalid -o flag \"%s\"", optarg);
641 case PREFS_SET_NO_SUCH_PREF:
642 case PREFS_SET_OBSOLETE:
643 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
648 case 'r': /* Read capture file xxx */
649 pipe_name = g_strdup(optarg);
651 case 'R': /* Read file filter */
652 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
653 rfilters[n_rfilters++] = optarg;
656 cmdarg_err("Too many display filters");
660 case 's': /* Skip PCAP header */
661 skip_pcap_header = TRUE;
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 /* Notify all registered modules that have had any of their preferences
712 changed either from one of the preferences file or from the command
713 line that their preferences have changed.
714 Initialize preferences before display filters, otherwise modules
715 like MATE won't work. */
718 /* Initialize our display fields */
719 for (fc = 0; fc < disp_fields->len; fc++) {
720 protocolinfo_init(g_ptr_array_index(disp_fields, fc));
722 g_ptr_array_free(disp_fields, TRUE);
726 /* If no capture filter or read filter has been specified, and there are
727 still command-line arguments, treat them as the tokens of a capture
728 filter (if no "-r" flag was specified) or a read filter (if a "-r"
729 flag was specified. */
731 if (pipe_name != NULL) {
732 if (n_rfilters != 0) {
733 cmdarg_err("Read filters were specified both with \"-R\" "
734 "and with additional command-line arguments");
737 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
741 /* Make sure we got a dissector handle for our payload. */
742 if (encap == WTAP_ENCAP_UNKNOWN) {
743 cmdarg_err("No valid payload dissector specified.");
754 /* Start windows sockets */
755 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
758 /* At this point MATE will have registered its field array so we can
759 have a tap filter with one of MATE's late-registered fields as part
760 of the filter. We can now process all the "-z" arguments. */
761 start_requested_stats();
763 /* disabled protocols as per configuration file */
764 if (gdp_path == NULL && dp_path == NULL) {
765 set_disabled_protos_list();
768 /* Build the column format array */
769 col_setup(&cfile.cinfo, prefs->num_cols);
770 for (i = 0; i < cfile.cinfo.num_cols; i++) {
771 cfile.cinfo.col_fmt[i] = get_column_format(i);
772 cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
773 cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
775 get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
776 cfile.cinfo.col_data[i] = NULL;
777 if (cfile.cinfo.col_fmt[i] == COL_INFO)
778 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
780 cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
781 cfile.cinfo.col_fence[i] = 0;
782 cfile.cinfo.col_expr.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
783 cfile.cinfo.col_expr.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
786 for (i = 0; i < cfile.cinfo.num_cols; i++) {
789 for (j = 0; j < NUM_COL_FMTS; j++) {
790 if (!cfile.cinfo.fmt_matx[i][j])
793 if (cfile.cinfo.col_first[j] == -1)
794 cfile.cinfo.col_first[j] = i;
795 cfile.cinfo.col_last[j] = i;
799 if (n_rfilters != 0) {
800 for (i = 0; i < n_rfilters; i++) {
801 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
802 cmdarg_err("%s", dfilter_error_msg);
812 * We're reading a pipe (or capture file).
816 * Immediately relinquish any special privileges we have; we must not
817 * be allowed to read any capture files the user running Rawshark
820 relinquish_special_privs_perm();
822 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
827 /* Do we need to PCAP header and magic? */
828 if (skip_pcap_header) {
829 guint bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
830 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
831 while (bytes_left > 0) {
832 guint bytes = read(fd, buf, bytes_left);
834 cmdarg_err("Not enough bytes for pcap header.");
841 /* Set timestamp precision; there should arguably be a command-line
842 option to let the user set this. */
844 switch(wtap_file_tsprecision(cfile.wth)) {
845 case(WTAP_FILE_TSPREC_SEC):
846 timestamp_set_precision(TS_PREC_AUTO_SEC);
848 case(WTAP_FILE_TSPREC_DSEC):
849 timestamp_set_precision(TS_PREC_AUTO_DSEC);
851 case(WTAP_FILE_TSPREC_CSEC):
852 timestamp_set_precision(TS_PREC_AUTO_CSEC);
854 case(WTAP_FILE_TSPREC_MSEC):
855 timestamp_set_precision(TS_PREC_AUTO_MSEC);
857 case(WTAP_FILE_TSPREC_USEC):
858 timestamp_set_precision(TS_PREC_AUTO_USEC);
860 case(WTAP_FILE_TSPREC_NSEC):
861 timestamp_set_precision(TS_PREC_AUTO_NSEC);
864 g_assert_not_reached();
867 timestamp_set_precision(TS_PREC_AUTO_USEC);
870 /* Process the packets in the file */
871 err = load_cap_file(&cfile);
878 /* If you want to capture live packets, use TShark. */
879 cmdarg_err("Input file or pipe name not specified.");
889 * Read data from a raw pipe. The "raw" data consists of a libpcap
890 * packet header followed by the payload.
891 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
892 * of thing you want to use in Windows.
893 * @param phdr [OUT] Packet header information.
894 * @param err [OUT] Error indicator. Uses wiretap values.
895 * @param err_info [OUT] Error message.
896 * @param data_offset [OUT] data offset in the pipe.
897 * @return TRUE on success, FALSE on failure.
900 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, gchar **err_info, gint64 *data_offset) {
901 struct pcaprec_hdr hdr;
903 int bytes_needed = sizeof(struct pcaprec_hdr);
904 guchar *ptr = (guchar*)&hdr;
905 static gchar err_str[100];
907 /* Copied from capture_loop.c */
908 while (bytes_needed > 0) {
909 bytes_read = read(fd, ptr, bytes_needed);
910 if (bytes_read == 0) {
913 } else if (bytes_read < 0) {
914 *err = WTAP_ERR_CANT_READ;
915 *err_info = "Error reading header from pipe";
918 bytes_needed -= bytes_read;
919 *data_offset += bytes_read;
924 phdr->ts.secs = hdr.ts_sec;
925 phdr->ts.nsecs = hdr.ts_usec * 1000;
926 phdr->caplen = bytes_needed = hdr.incl_len;
927 phdr->len = hdr.orig_len;
928 phdr->pkt_encap = encap;
931 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
932 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
933 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
934 printf("len: %d (%04x)\n", hdr.len, hdr.len);
936 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
937 *err = WTAP_ERR_BAD_RECORD;
938 g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
944 while (bytes_needed > 0) {
945 bytes_read = read(fd, ptr, bytes_needed);
946 if (bytes_read == 0) {
947 *err = WTAP_ERR_SHORT_READ;
948 *err_info = "Got zero bytes reading data from pipe";
950 } else if (bytes_read < 0) {
951 *err = WTAP_ERR_CANT_READ;
952 *err_info = "Error reading data from pipe";
955 bytes_needed -= bytes_read;
956 *data_offset += bytes_read;
963 load_cap_file(capture_file *cf)
967 gint64 data_offset = 0;
968 struct wtap_pkthdr phdr;
969 guchar pd[WTAP_MAX_PACKET_SIZE];
971 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
972 process_packet(cf, data_offset, &phdr, pd);
976 /* Print a message noting that the read failed somewhere along the line. */
979 case WTAP_ERR_UNSUPPORTED_ENCAP:
980 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
981 cf->filename, err_info);
984 case WTAP_ERR_CANT_READ:
985 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
989 case WTAP_ERR_SHORT_READ:
990 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
994 case WTAP_ERR_BAD_RECORD:
995 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
996 cf->filename, err_info);
1000 cmdarg_err("An error occurred while reading \"%s\": %s.",
1001 cf->filename, wtap_strerror(err));
1010 fill_in_fdata(frame_data *fdata, capture_file *cf,
1011 const struct wtap_pkthdr *phdr, gint64 offset)
1016 fdata->num = cf->count;
1017 fdata->pkt_len = phdr->len;
1018 cum_bytes += phdr->len;
1019 fdata->cum_bytes = cum_bytes;
1020 fdata->cap_len = phdr->caplen;
1021 fdata->file_off = offset;
1022 fdata->lnk_t = phdr->pkt_encap;
1023 fdata->abs_ts.secs = phdr->ts.secs;
1024 fdata->abs_ts.nsecs = phdr->ts.nsecs;
1025 fdata->flags.passed_dfilter = 0;
1026 fdata->flags.encoding = CHAR_ASCII;
1027 fdata->flags.visited = 0;
1028 fdata->flags.marked = 0;
1029 fdata->flags.ref_time = 0;
1030 fdata->color_filter = NULL;
1032 /* If we don't have the time stamp of the first packet in the
1033 capture, it's because this is the first packet. Save the time
1034 stamp of this packet as the time stamp of the first packet. */
1035 if (nstime_is_unset(&first_ts)) {
1036 first_ts = fdata->abs_ts;
1039 /* If we don't have the time stamp of the previous captured packet,
1040 it's because this is the first packet. Save the time
1041 stamp of this packet as the time stamp of the previous captured
1043 if (nstime_is_unset(&prev_cap_ts)) {
1044 prev_cap_ts = fdata->abs_ts;
1047 /* Get the time elapsed between the first packet and this packet. */
1048 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
1050 /* If it's greater than the current elapsed time, set the elapsed time
1051 to it (we check for "greater than" so as not to be confused by
1052 time moving backwards). */
1053 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
1054 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
1055 cf->elapsed_time = fdata->rel_ts;
1058 /* If we don't have the time stamp of the previous displayed packet,
1059 it's because this is the first packet that's being displayed. Save the time
1060 stamp of this packet as the time stamp of the previous displayed
1062 if (nstime_is_unset(&prev_dis_ts))
1063 prev_dis_ts = fdata->abs_ts;
1065 /* Get the time elapsed between the previous displayed packet and
1067 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
1069 /* Get the time elapsed between the previous captured packet and
1071 nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
1072 prev_cap_ts = fdata->abs_ts;
1075 /* Free up all data attached to a "frame_data" structure. */
1077 clear_fdata(frame_data *fdata)
1080 g_slist_free(fdata->pfd);
1084 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
1088 gboolean create_proto_tree;
1089 epan_dissect_t *edt;
1091 union wtap_pseudo_header pseudo_header;
1096 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1097 packets to process. We spit out a line with the timestamp and the text "void"
1099 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1100 (unsigned long int)whdr->ts.secs,
1101 (unsigned long int)whdr->ts.nsecs);
1108 memset(&pseudo_header, 0, sizeof(pseudo_header));
1110 /* Count this packet. */
1113 /* If we're going to print packet information, or we're going to
1114 run a read filter, or we're going to process taps, set up to
1115 do a dissection and do so. */
1116 fill_in_fdata(&fdata, cf, whdr, offset);
1119 create_proto_tree = TRUE;
1121 /* The protocol tree will be "visible", i.e., printed, only if we're
1122 printing packet details, which is true if we're in verbose mode ("verbose"
1124 edt = epan_dissect_new(create_proto_tree, FALSE);
1126 /* If we're running a read filter, prime the epan_dissect_t with that
1128 if (n_rfilters > 0) {
1129 for(i = 0; i < n_rfcodes; i++) {
1130 epan_dissect_prime_dfilter(edt, rfcodes[i]);
1134 tap_queue_init(edt);
1136 printf("%lu", (unsigned long int)cf->count);
1138 /* We only need the columns if we're printing packet info but we're
1139 *not* verbose; in verbose mode, we print the protocol tree, not
1140 the protocol summary. */
1141 epan_dissect_run(edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1143 tap_push_tapped_queue(edt);
1145 for(i = 0; i < n_rfilters; i++) {
1146 /* Run the read filter if we have one. */
1148 passed = dfilter_apply_edt(rfcodes[i], edt);
1152 /* Print a one-line summary */
1153 printf(" %u", passed ? 1 : 0);
1158 /* The ANSI C standard does not appear to *require* that a line-buffered
1159 stream be flushed to the host environment whenever a newline is
1160 written, it just says that, on such a stream, characters "are
1161 intended to be transmitted to or from the host environment as a
1162 block when a new-line character is encountered".
1164 The Visual C++ 6.0 C implementation doesn't do what is intended;
1165 even if you set a stream to be line-buffered, it still doesn't
1166 flush the buffer at the end of every line.
1168 So, if the "-l" flag was specified, we flush the standard output
1169 at the end of a packet. This will do the right thing if we're
1170 printing packet summary lines, and, as we print the entire protocol
1171 tree for a single packet without waiting for anything to happen,
1172 it should be as good as line-buffered mode if we're printing
1173 protocol trees. (The whole reason for the "-l" flag in either
1174 tcpdump or Rawshark is to allow the output of a live capture to
1175 be piped to a program or script and to have that script see the
1176 information for the packet as soon as it's printed, rather than
1177 having to wait until a standard I/O buffer fills up. */
1181 if (ferror(stdout)) {
1182 show_print_file_io_error(errno);
1186 epan_dissect_free(edt);
1187 clear_fdata(&fdata);
1192 /****************************************************************************************
1193 * FIELD EXTRACTION ROUTINES
1194 ****************************************************************************************/
1195 typedef struct _pci_t {
1201 char* ftenum_to_string(header_field_info *hfi)
1207 if (string_fmts->len > 0 && hfi->strings) {
1215 return "FT_PROTOCOL";
1217 return "FT_BOOLEAN";
1242 case FT_ABSOLUTE_TIME:
1243 return "FT_ABSOLUTE_TIME";
1244 case FT_RELATIVE_TIME:
1245 return "FT_RELATIVE_TIME";
1249 return "FT_STRINGZ";
1250 case FT_UINT_STRING:
1251 return "FT_UINT_STRING";
1257 return "FT_UINT_BYTES";
1265 return "FT_FRAMENUM";
1273 return "FT_NUM_TYPES";
1279 char* base_display_e_to_string(base_display_e bd)
1291 return "BASE_DEC_HEX";
1293 return "BASE_HEX_DEC";
1300 * Copied from various parts of proto.c
1302 #define FIELD_STR_INIT_LEN 256
1303 #define cVALS(x) (const value_string*)(x)
1304 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1306 header_field_info *hfinfo;
1307 static char *fs_buf = NULL;
1308 char *fs_ptr = fs_buf;
1309 static GString *label_s = NULL;
1310 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1315 const true_false_string *tfstring = &tfs_true_false;
1317 hfinfo = finfo->hfinfo;
1320 fs_buf = g_malloc(fs_buf_len + 1);
1325 label_s = g_string_new("");
1328 if(finfo->value.ftype->val_to_string_repr)
1331 * this field has an associated value,
1334 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1335 while (fs_buf_len < fs_len) {
1337 fs_buf = g_realloc(fs_buf, fs_buf_len + 1);
1340 fvalue_to_string_repr(&finfo->value,
1344 /* String types are quoted. Remove them. */
1345 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1346 fs_buf[fs_len - 1] = '\0';
1351 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1352 g_string_truncate(label_s, 0);
1353 for (i = 0; i < string_fmts->len; i++) {
1354 sf = g_ptr_array_index(string_fmts, i);
1356 g_string_append(label_s, sf->plain);
1358 switch (sf->format) {
1360 g_string_append(label_s, hfinfo->name);
1363 g_string_append(label_s, fs_ptr);
1366 switch(hfinfo->type) {
1368 uvalue = fvalue_get_uinteger(&finfo->value);
1369 tfstring = (const struct true_false_string*) hfinfo->strings;
1370 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1376 DISSECTOR_ASSERT(!hfinfo->bitmask);
1377 svalue = fvalue_get_sinteger(&finfo->value);
1378 if (hfinfo->display & BASE_RANGE_STRING) {
1379 g_string_append(label_s, rval_to_str(svalue, hfinfo->strings, "Unknown"));
1381 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1387 uvalue = fvalue_get_uinteger(&finfo->value);
1388 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1389 g_string_append(label_s, rval_to_str(uvalue, hfinfo->strings, "Unknown"));
1391 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1403 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1407 if(finfo->value.ftype->val_to_string_repr)
1409 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1414 * This field doesn't have an associated value,
1418 printf(" %u=\"n.a.\"", cmd_line_index);
1423 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1429 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1436 * Print each occurrence of the field
1438 for (i = 0; i < gp->len; i++) {
1439 print_field_value(gp->pdata[i], rs->cmd_line_index);
1445 int g_cmd_line_index = 0;
1448 * field must be persistent - we don't g_strdup() it below
1451 protocolinfo_init(char *field)
1454 header_field_info *hfi;
1455 GString *error_string;
1457 hfi=proto_registrar_get_byname(field);
1459 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1463 printf("%u %s %s - ",
1465 ftenum_to_string(hfi),
1466 base_display_e_to_string(hfi->display));
1468 rs=g_malloc(sizeof(pci_t));
1469 rs->hf_index=hfi->id;
1471 rs->cmd_line_index = g_cmd_line_index++;
1473 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1475 /* error, we failed to attach to the tap. complain and clean up */
1476 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1478 g_string_free(error_string, TRUE);
1489 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1490 * and fill in string_fmt_parts.
1494 add_string_fmt(string_fmt_e format, gchar *plain) {
1495 string_fmt_t *sf = g_malloc(sizeof(string_fmt_t));
1497 sf->format = format;
1498 sf->plain = g_strdup(plain);
1500 g_ptr_array_add(string_fmts, sf);
1504 parse_field_string_format(gchar *format) {
1505 GString *plain_s = g_string_new("");
1513 len = strlen(format);
1514 g_ptr_array_set_size(string_fmts, 0);
1517 if (format[pos] == '%') {
1518 if (pos >= len) { /* There should always be a following character */
1522 if (plain_s->len > 0) {
1523 add_string_fmt(SF_NONE, plain_s->str);
1524 g_string_truncate(plain_s, 0);
1526 switch (format[pos]) {
1528 add_string_fmt(SF_NAME, NULL);
1531 add_string_fmt(SF_NUMVAL, NULL);
1534 add_string_fmt(SF_STRVAL, NULL);
1537 g_string_append_c(plain_s, '%');
1539 default: /* Invalid format */
1543 g_string_append_c(plain_s, format[pos]);
1548 if (plain_s->len > 0) {
1549 add_string_fmt(SF_NONE, plain_s->str);
1551 g_string_free(plain_s, TRUE);
1555 /****************************************************************************************
1556 * END OF FIELD EXTRACTION ROUTINES
1557 ****************************************************************************************/
1560 show_print_file_io_error(int err)
1565 cmdarg_err("Not all the packets could be printed because there is "
1566 "no space left on the file system.");
1571 cmdarg_err("Not all the packets could be printed because you are "
1572 "too close to, or over your disk quota.");
1577 cmdarg_err("An error occurred while printing packets: %s.",
1584 * Open/create errors are reported with an console message in Rawshark.
1587 open_failure_message(const char *filename, int err, gboolean for_writing)
1589 fprintf(stderr, "rawshark: ");
1590 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1591 fprintf(stderr, "\n");
1595 raw_cf_open(capture_file *cf, const char *fname)
1597 if ((fd = raw_pipe_open(fname)) < 0)
1600 /* The open succeeded. Fill in the information for this file. */
1602 /* Initialize all data structures used for dissection. */
1606 cf->f_datalen = 0; /* not used, but set it anyway */
1608 /* Set the file name because we need it to set the follow stream filter.
1609 XXX - is that still true? We need it for other reasons, though,
1611 cf->filename = g_strdup(fname);
1613 /* Indicate whether it's a permanent or temporary file. */
1614 cf->is_tempfile = FALSE;
1616 /* If it's a temporary capture buffer file, mark it as not saved. */
1617 cf->user_saved = FALSE;
1619 cf->cd_t = WTAP_FILE_UNKNOWN;
1621 cf->drops_known = FALSE;
1623 cf->has_snap = FALSE;
1624 cf->snap = WTAP_MAX_PACKET_SIZE;
1625 nstime_set_zero(&cf->elapsed_time);
1626 nstime_set_unset(&first_ts);
1627 nstime_set_unset(&prev_dis_ts);
1628 nstime_set_unset(&prev_cap_ts);
1635 * General errors are reported with an console message in Rawshark.
1638 failure_message(const char *msg_format, va_list ap)
1640 fprintf(stderr, "rawshark: ");
1641 vfprintf(stderr, msg_format, ap);
1642 fprintf(stderr, "\n");
1646 * Read errors are reported with an console message in Rawshark.
1649 read_failure_message(const char *filename, int err)
1651 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1652 filename, strerror(err));
1656 * Write errors are reported with an console message in Rawshark.
1659 write_failure_message(const char *filename, int err)
1661 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1662 filename, strerror(err));
1666 * Report an error in command-line arguments.
1669 cmdarg_err(const char *fmt, ...)
1674 fprintf(stderr, "rawshark: ");
1675 vfprintf(stderr, fmt, ap);
1676 fprintf(stderr, "\n");
1681 * Report additional information for an error in command-line arguments.
1684 cmdarg_err_cont(const char *fmt, ...)
1689 vfprintf(stderr, fmt, ap);
1690 fprintf(stderr, "\n");
1695 /****************************************************************************************************************/
1696 /* other "dummies" */
1698 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1700 /* shouldn't happen */
1701 g_assert_not_reached();
1710 * indent-tabs-mode: t
1713 * ex: set shiftwidth=4 tabstop=4 noexpandtab
1714 * :indentSize=4:tabSize=4:noTabs=false: