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
75 #include <epan/epan.h>
76 #include <epan/filesystem.h>
77 #include <wsutil/privileges.h>
78 #include <wsutil/file_util.h>
81 #include <epan/packet.h>
83 #include "disabled_protos.h"
84 #include <epan/prefs.h>
85 #include <epan/column.h>
87 #include <epan/addr_resolv.h>
89 #include "clopts_common.h"
90 #include "cmdarg_err.h"
91 #include "version_info.h"
92 #include <epan/plugins.h>
94 #include "conditions.h"
95 #include "capture_stop_conditions.h"
96 #include "capture_ui_utils.h"
97 #include <epan/epan_dissect.h>
98 #include <epan/stat_cmd_args.h>
99 #include <epan/timestamp.h>
100 #include <wsutil/unicode-utils.h>
101 #include "epan/column-utils.h"
102 #include "epan/proto.h"
103 #include <epan/tap.h>
111 #include "capture-pcap-util.h"
114 #include "capture-wpcap.h"
115 #include "capture_errs.h"
117 #endif /* HAVE_LIBPCAP */
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 guint32 cum_bytes;
127 static nstime_t first_ts;
128 static nstime_t prev_dis_ts;
129 static nstime_t prev_cap_ts;
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 */
140 static gboolean line_buffered;
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 write_failure_message(const char *filename, int err);
160 static void protocolinfo_init(char *field);
161 static gboolean parse_field_string_format(char *format);
164 SF_NONE, /* No format (placeholder) */
165 SF_NAME, /* %D Field name / description */
166 SF_NUMVAL, /* %N Numeric value */
167 SF_STRVAL /* %S String value */
170 typedef struct string_fmt_s {
172 string_fmt_e format; /* Valid if plain is NULL */
178 dfilter_t *rfcodes[64];
180 dfilter_t *rfieldfcodes[64];
183 GPtrArray *string_fmts;
186 print_usage(gboolean print_ver)
193 "Rawshark " VERSION "%s\n"
194 "Dump and analyze network traffic.\n"
195 "See http://www.wireshark.org for more information.\n"
198 wireshark_svnversion, get_copyright_info());
202 fprintf(output, "\n");
203 fprintf(output, "Usage: rawshark [options] ...\n");
204 fprintf(output, "\n");
206 fprintf(output, "Input file:\n");
207 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
209 fprintf(output, "\n");
210 fprintf(output, "Processing:\n");
211 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
212 fprintf(output, " -F <field> field to display\n");
213 fprintf(output, " -s skip PCAP header on input\n");
214 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
215 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
216 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
217 fprintf(output, " packet encapsulation or protocol\n");
219 /*fprintf(output, "\n");*/
220 fprintf(output, "Output:\n");
221 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval)\n");
222 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
223 fprintf(output, " -l flush output after each packet\n");
225 fprintf(output, "\n");
226 fprintf(output, "Miscellaneous:\n");
227 fprintf(output, " -h display this help and exit\n");
228 fprintf(output, " -v display version info and exit\n");
229 fprintf(output, " -o <name>:<value> ... override preference setting\n");
233 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
234 const gchar *message _U_, gpointer user_data _U_)
239 * Open a pipe for raw input. This is a stripped-down version of
240 * pcap_loop.c:cap_pipe_open_live().
241 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
242 * @param pipe_name The name of the pipe or FIFO.
243 * @return A POSIX file descriptor on success, or -1 on failure.
246 raw_pipe_open(const char *pipe_name)
249 struct stat pipe_stat;
258 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
261 * XXX Rawshark blocks until we return
263 if (strcmp(pipe_name, "-") == 0) {
264 rfd = 0; /* read from stdin */
267 * This is needed to set the stdin pipe into binary mode, otherwise
268 * CR/LF are mangled...
270 _setmode(0, _O_BINARY);
274 if (ws_stat(pipe_name, &pipe_stat) < 0) {
275 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
276 pipe_name, strerror(errno));
279 if (! S_ISFIFO(pipe_stat.st_mode)) {
280 if (S_ISCHR(pipe_stat.st_mode)) {
282 * Assume the user specified an interface on a system where
283 * interfaces are in /dev. Pretend we haven't seen it.
287 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
292 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
294 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
295 pipe_name, 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 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
318 /* Wait for the pipe to appear */
320 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
321 OPEN_EXISTING, 0, NULL);
323 if (hPipe != INVALID_HANDLE_VALUE)
326 err = GetLastError();
327 if (err != ERROR_PIPE_BUSY) {
328 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
329 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
330 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
331 pipe_name, utf_16to8(err_str), err);
336 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
337 err = GetLastError();
338 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
339 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
340 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
341 pipe_name, utf_16to8(err_str), err);
347 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
349 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
350 pipe_name, strerror(errno));
360 * Parse a link-type argument of the form "encap:<pcap dlt>" or
361 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
362 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
363 * a protocol name, e.g. "http".
366 set_link_type(const char *lt_arg) {
367 char *spec_ptr = strchr(lt_arg, ':');
371 dissector_handle_t dhandle;
379 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
380 dlt_val = linktype_name_to_val(spec_ptr);
383 val = strtol(spec_ptr, &p, 10);
384 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
389 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
390 if (encap == WTAP_ENCAP_UNKNOWN) {
394 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
395 dhandle = find_dissector(spec_ptr);
397 encap = WTAP_ENCAP_USER0;
398 pref_str = g_string_new("uat:user_dlts:");
399 /* This must match the format used in the user_dlts file */
400 g_string_append_printf(pref_str,
401 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
403 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
404 g_string_free(pref_str, TRUE);
407 g_string_free(pref_str, TRUE);
415 show_version(GString *comp_info_str, GString *runtime_info_str)
417 printf("Rawshark " VERSION "%s\n"
424 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
425 runtime_info_str->str);
429 main(int argc, char *argv[])
431 char *init_progfile_dir_error;
433 gboolean arg_error = FALSE;
439 char *gpf_path, *pf_path;
440 char *gdp_path, *dp_path;
441 int gpf_open_errno, gpf_read_errno;
442 int pf_open_errno, pf_read_errno;
443 int gdp_open_errno, gdp_read_errno;
444 int dp_open_errno, dp_read_errno;
446 gchar *pipe_name = NULL;
450 GLogLevelFlags log_flags;
451 GPtrArray *disp_fields = g_ptr_array_new();
453 gboolean skip_pcap_header = FALSE;
455 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:sS:t:v"
457 static const char optstring[] = OPTSTRING_INIT;
460 * Get credential information for later use.
462 get_credential_info();
465 * Clear the filters arrays
467 memset(rfilters, 0, sizeof(rfilters));
468 memset(rfcodes, 0, sizeof(rfcodes));
473 * Initialize our string format
475 string_fmts = g_ptr_array_new();
478 * Attempt to get the pathname of the executable file.
480 init_progfile_dir_error = init_progfile_dir(argv[0], main);
481 if (init_progfile_dir_error != NULL) {
482 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
483 init_progfile_dir_error);
487 * Get credential information for later use.
489 get_credential_info();
491 /* nothing more than the standard GLib handler, but without a warning */
493 G_LOG_LEVEL_WARNING |
494 G_LOG_LEVEL_MESSAGE |
498 g_log_set_handler(NULL,
500 log_func_ignore, NULL /* user_data */);
501 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
503 log_func_ignore, NULL /* user_data */);
505 timestamp_set_type(TS_RELATIVE);
506 timestamp_set_precision(TS_PREC_AUTO);
508 /* Register all dissectors; we must do this before checking for the
509 "-G" flag, as the "-G" flag dumps information registered by the
510 dissectors, and we must do it before we read the preferences, in
511 case any dissectors register preferences. */
512 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
513 failure_message, open_failure_message, read_failure_message,
514 write_failure_message);
516 /* Now register the preferences for any non-dissector modules.
517 We must do that before we read the preferences as well. */
518 prefs_register_modules();
520 /* Set the C-language locale to the native environment. */
521 setlocale(LC_ALL, "");
523 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
524 &pf_open_errno, &pf_read_errno, &pf_path);
525 if (gpf_path != NULL) {
526 if (gpf_open_errno != 0) {
527 cmdarg_err("Can't open global preferences file \"%s\": %s.",
528 pf_path, strerror(gpf_open_errno));
530 if (gpf_read_errno != 0) {
531 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
532 pf_path, strerror(gpf_read_errno));
535 if (pf_path != NULL) {
536 if (pf_open_errno != 0) {
537 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
538 strerror(pf_open_errno));
540 if (pf_read_errno != 0) {
541 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
542 pf_path, strerror(pf_read_errno));
548 /* Set the name resolution code's flags from the preferences. */
549 g_resolv_flags = prefs->name_resolve;
551 /* Read the disabled protocols file. */
552 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
553 &dp_path, &dp_open_errno, &dp_read_errno);
554 if (gdp_path != NULL) {
555 if (gdp_open_errno != 0) {
556 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
557 gdp_path, strerror(gdp_open_errno));
559 if (gdp_read_errno != 0) {
560 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
561 gdp_path, strerror(gdp_read_errno));
565 if (dp_path != NULL) {
566 if (dp_open_errno != 0) {
568 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
569 strerror(dp_open_errno));
571 if (dp_read_errno != 0) {
573 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
574 strerror(dp_read_errno));
580 /* Load Wpcap, if possible */
584 cap_file_init(&cfile);
586 /* Print format defaults to this. */
587 print_format = PR_FMT_TEXT;
589 /* Initialize our encapsulation type */
590 encap = WTAP_ENCAP_UNKNOWN;
592 /* Now get our args */
593 /* XXX - We should probably have an option to dump libpcap link types */
594 while ((opt = getopt(argc, argv, optstring)) != -1) {
596 case 'd': /* Payload type */
597 if (!set_link_type(optarg)) {
598 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
602 case 'F': /* Read field to display */
603 g_ptr_array_add(disp_fields, g_strdup(optarg));
605 case 'h': /* Print help and exit */
609 case 'l': /* "Line-buffer" standard output */
610 /* This isn't line-buffering, strictly speaking, it's just
611 flushing the standard output after the information for
612 each packet is printed; however, that should be good
613 enough for all the purposes to which "-l" is put (and
614 is probably actually better for "-V", as it does fewer
617 See the comment in "process_packet()" for an explanation of
618 why we do that, and why we don't just use "setvbuf()" to
619 make the standard output line-buffered (short version: in
620 Windows, "line-buffered" is the same as "fully-buffered",
621 and the output buffer is only flushed when it fills up). */
622 line_buffered = TRUE;
624 case 'n': /* No name resolution */
625 g_resolv_flags = RESOLV_NONE;
627 case 'N': /* Select what types of addresses/port #s to resolve */
628 if (g_resolv_flags == RESOLV_ALL)
629 g_resolv_flags = RESOLV_NONE;
630 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
631 if (badopt != '\0') {
632 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
637 case 'o': /* Override preference from command line */
638 switch (prefs_set_pref(optarg)) {
643 case PREFS_SET_SYNTAX_ERR:
644 cmdarg_err("Invalid -o flag \"%s\"", optarg);
648 case PREFS_SET_NO_SUCH_PREF:
649 case PREFS_SET_OBSOLETE:
650 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
655 case 'r': /* Read capture file xxx */
656 pipe_name = g_strdup(optarg);
658 case 'R': /* Read file filter */
659 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
660 rfilters[n_rfilters++] = optarg;
663 cmdarg_err("Too many display filters");
667 case 's': /* Skip PCAP header */
668 skip_pcap_header = TRUE;
670 case 'S': /* Print string representations */
671 if (!parse_field_string_format(optarg)) {
672 cmdarg_err("Invalid field string format");
676 case 't': /* Time stamp type */
677 if (strcmp(optarg, "r") == 0)
678 timestamp_set_type(TS_RELATIVE);
679 else if (strcmp(optarg, "a") == 0)
680 timestamp_set_type(TS_ABSOLUTE);
681 else if (strcmp(optarg, "ad") == 0)
682 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
683 else if (strcmp(optarg, "d") == 0)
684 timestamp_set_type(TS_DELTA);
685 else if (strcmp(optarg, "dd") == 0)
686 timestamp_set_type(TS_DELTA_DIS);
687 else if (strcmp(optarg, "e") == 0)
688 timestamp_set_type(TS_EPOCH);
690 cmdarg_err("Invalid time stamp type \"%s\"",
692 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
693 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
697 case 'v': /* Show version and exit */
699 GString *comp_info_str;
700 GString *runtime_info_str;
701 /* Assemble the compile-time version information string */
702 comp_info_str = g_string_new("Compiled ");
703 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
705 /* Assemble the run-time version information string */
706 runtime_info_str = g_string_new("Running ");
707 get_runtime_version_info(runtime_info_str, NULL);
708 show_version(comp_info_str, runtime_info_str);
709 g_string_free(comp_info_str, TRUE);
710 g_string_free(runtime_info_str, TRUE);
715 case '?': /* Bad flag - print usage message */
722 /* Notify all registered modules that have had any of their preferences
723 changed either from one of the preferences file or from the command
724 line that their preferences have changed.
725 Initialize preferences before display filters, otherwise modules
726 like MATE won't work. */
729 /* Initialize our display fields */
730 for (fc = 0; fc < disp_fields->len; fc++) {
731 protocolinfo_init(g_ptr_array_index(disp_fields, fc));
733 g_ptr_array_free(disp_fields, TRUE);
737 /* If no capture filter or read filter has been specified, and there are
738 still command-line arguments, treat them as the tokens of a capture
739 filter (if no "-r" flag was specified) or a read filter (if a "-r"
740 flag was specified. */
742 if (pipe_name != NULL) {
743 if (n_rfilters != 0) {
744 cmdarg_err("Read filters were specified both with \"-R\" "
745 "and with additional command-line arguments");
748 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
752 /* Make sure we got a dissector handle for our payload. */
753 if (encap == WTAP_ENCAP_UNKNOWN) {
754 cmdarg_err("No valid payload dissector specified.");
765 /* Start windows sockets */
766 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
769 /* At this point MATE will have registered its field array so we can
770 have a tap filter with one of MATE's late-registered fields as part
771 of the filter. We can now process all the "-z" arguments. */
772 start_requested_stats();
774 /* disabled protocols as per configuration file */
775 if (gdp_path == NULL && dp_path == NULL) {
776 set_disabled_protos_list();
779 /* Build the column format array */
780 build_column_format_array(&cfile.cinfo, prefs->num_cols, TRUE);
782 if (n_rfilters != 0) {
783 for (i = 0; i < n_rfilters; i++) {
784 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
785 cmdarg_err("%s", dfilter_error_msg);
795 * We're reading a pipe (or capture file).
799 * Immediately relinquish any special privileges we have; we must not
800 * be allowed to read any capture files the user running Rawshark
803 relinquish_special_privs_perm();
805 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
810 /* Do we need to PCAP header and magic? */
811 if (skip_pcap_header) {
812 guint bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
813 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
814 while (bytes_left > 0) {
815 guint bytes = read(fd, buf, bytes_left);
817 cmdarg_err("Not enough bytes for pcap header.");
824 /* Set timestamp precision; there should arguably be a command-line
825 option to let the user set this. */
827 switch(wtap_file_tsprecision(cfile.wth)) {
828 case(WTAP_FILE_TSPREC_SEC):
829 timestamp_set_precision(TS_PREC_AUTO_SEC);
831 case(WTAP_FILE_TSPREC_DSEC):
832 timestamp_set_precision(TS_PREC_AUTO_DSEC);
834 case(WTAP_FILE_TSPREC_CSEC):
835 timestamp_set_precision(TS_PREC_AUTO_CSEC);
837 case(WTAP_FILE_TSPREC_MSEC):
838 timestamp_set_precision(TS_PREC_AUTO_MSEC);
840 case(WTAP_FILE_TSPREC_USEC):
841 timestamp_set_precision(TS_PREC_AUTO_USEC);
843 case(WTAP_FILE_TSPREC_NSEC):
844 timestamp_set_precision(TS_PREC_AUTO_NSEC);
847 g_assert_not_reached();
850 timestamp_set_precision(TS_PREC_AUTO_USEC);
853 /* Process the packets in the file */
854 err = load_cap_file(&cfile);
861 /* If you want to capture live packets, use TShark. */
862 cmdarg_err("Input file or pipe name not specified.");
872 * Read data from a raw pipe. The "raw" data consists of a libpcap
873 * packet header followed by the payload.
874 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
875 * of thing you want to use in Windows.
876 * @param phdr [OUT] Packet header information.
877 * @param err [OUT] Error indicator. Uses wiretap values.
878 * @param err_info [OUT] Error message.
879 * @param data_offset [OUT] data offset in the pipe.
880 * @return TRUE on success, FALSE on failure.
883 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, gchar **err_info, gint64 *data_offset) {
884 struct pcaprec_hdr hdr;
886 int bytes_needed = sizeof(struct pcaprec_hdr);
887 guchar *ptr = (guchar*)&hdr;
888 static gchar err_str[100];
890 /* Copied from capture_loop.c */
891 while (bytes_needed > 0) {
892 bytes_read = read(fd, ptr, 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_sec;
907 phdr->ts.nsecs = hdr.ts_usec * 1000;
908 phdr->caplen = bytes_needed = hdr.incl_len;
909 phdr->len = hdr.orig_len;
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, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
926 while (bytes_needed > 0) {
927 bytes_read = read(fd, ptr, bytes_needed);
928 if (bytes_read == 0) {
929 *err = WTAP_ERR_SHORT_READ;
930 *err_info = "Got zero bytes reading data from pipe";
932 } else if (bytes_read < 0) {
933 *err = WTAP_ERR_CANT_READ;
934 *err_info = "Error reading data from pipe";
937 bytes_needed -= bytes_read;
938 *data_offset += bytes_read;
945 load_cap_file(capture_file *cf)
949 gint64 data_offset = 0;
950 struct wtap_pkthdr phdr;
951 guchar pd[WTAP_MAX_PACKET_SIZE];
953 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
954 process_packet(cf, data_offset, &phdr, pd);
958 /* Print a message noting that the read failed somewhere along the line. */
961 case WTAP_ERR_UNSUPPORTED_ENCAP:
962 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
963 cf->filename, err_info);
966 case WTAP_ERR_CANT_READ:
967 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
971 case WTAP_ERR_SHORT_READ:
972 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
976 case WTAP_ERR_BAD_RECORD:
977 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
978 cf->filename, err_info);
982 cmdarg_err("An error occurred while reading \"%s\": %s.",
983 cf->filename, wtap_strerror(err));
992 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
996 gboolean create_proto_tree;
999 union wtap_pseudo_header pseudo_header;
1004 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1005 packets to process. We spit out a line with the timestamp and the text "void"
1007 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1008 (unsigned long int)whdr->ts.secs,
1009 (unsigned long int)whdr->ts.nsecs);
1016 memset(&pseudo_header, 0, sizeof(pseudo_header));
1018 /* Count this packet. */
1021 /* If we're going to print packet information, or we're going to
1022 run a read filter, or we're going to process taps, set up to
1023 do a dissection and do so. */
1024 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1027 create_proto_tree = TRUE;
1029 /* The protocol tree will be "visible", i.e., printed, only if we're
1030 printing packet details, which is true if we're in verbose mode ("verbose"
1032 epan_dissect_init(&edt, create_proto_tree, FALSE);
1034 /* If we're running a read filter, prime the epan_dissect_t with that
1036 if (n_rfilters > 0) {
1037 for(i = 0; i < n_rfcodes; i++) {
1038 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1042 tap_queue_init(&edt);
1044 printf("%lu", (unsigned long int) cf->count);
1046 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1047 &first_ts, &prev_dis_ts, &prev_cap_ts);
1049 /* We only need the columns if we're printing packet info but we're
1050 *not* verbose; in verbose mode, we print the protocol tree, not
1051 the protocol summary. */
1052 epan_dissect_run(&edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1054 tap_push_tapped_queue(&edt);
1056 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
1058 for(i = 0; i < n_rfilters; i++) {
1059 /* Run the read filter if we have one. */
1061 passed = dfilter_apply_edt(rfcodes[i], &edt);
1065 /* Print a one-line summary */
1066 printf(" %u", passed ? 1 : 0);
1071 /* The ANSI C standard does not appear to *require* that a line-buffered
1072 stream be flushed to the host environment whenever a newline is
1073 written, it just says that, on such a stream, characters "are
1074 intended to be transmitted to or from the host environment as a
1075 block when a new-line character is encountered".
1077 The Visual C++ 6.0 C implementation doesn't do what is intended;
1078 even if you set a stream to be line-buffered, it still doesn't
1079 flush the buffer at the end of every line.
1081 So, if the "-l" flag was specified, we flush the standard output
1082 at the end of a packet. This will do the right thing if we're
1083 printing packet summary lines, and, as we print the entire protocol
1084 tree for a single packet without waiting for anything to happen,
1085 it should be as good as line-buffered mode if we're printing
1086 protocol trees. (The whole reason for the "-l" flag in either
1087 tcpdump or Rawshark is to allow the output of a live capture to
1088 be piped to a program or script and to have that script see the
1089 information for the packet as soon as it's printed, rather than
1090 having to wait until a standard I/O buffer fills up. */
1094 if (ferror(stdout)) {
1095 show_print_file_io_error(errno);
1099 epan_dissect_cleanup(&edt);
1100 frame_data_cleanup(&fdata);
1105 /****************************************************************************************
1106 * FIELD EXTRACTION ROUTINES
1107 ****************************************************************************************/
1108 typedef struct _pci_t {
1114 char* ftenum_to_string(header_field_info *hfi)
1120 if (string_fmts->len > 0 && hfi->strings) {
1128 return "FT_PROTOCOL";
1130 return "FT_BOOLEAN";
1155 case FT_ABSOLUTE_TIME:
1156 return "FT_ABSOLUTE_TIME";
1157 case FT_RELATIVE_TIME:
1158 return "FT_RELATIVE_TIME";
1162 return "FT_STRINGZ";
1163 case FT_UINT_STRING:
1164 return "FT_UINT_STRING";
1170 return "FT_UINT_BYTES";
1178 return "FT_FRAMENUM";
1186 return "FT_NUM_TYPES";
1192 char* base_display_e_to_string(base_display_e bd)
1204 return "BASE_DEC_HEX";
1206 return "BASE_HEX_DEC";
1213 * Copied from various parts of proto.c
1215 #define FIELD_STR_INIT_LEN 256
1216 #define cVALS(x) (const value_string*)(x)
1217 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1219 header_field_info *hfinfo;
1220 static char *fs_buf = NULL;
1221 char *fs_ptr = fs_buf;
1222 static GString *label_s = NULL;
1223 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1228 const true_false_string *tfstring = &tfs_true_false;
1230 hfinfo = finfo->hfinfo;
1233 fs_buf = g_malloc(fs_buf_len + 1);
1238 label_s = g_string_new("");
1241 if(finfo->value.ftype->val_to_string_repr)
1244 * this field has an associated value,
1247 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1248 while (fs_buf_len < fs_len) {
1250 fs_buf = g_realloc(fs_buf, fs_buf_len + 1);
1253 fvalue_to_string_repr(&finfo->value,
1257 /* String types are quoted. Remove them. */
1258 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1259 fs_buf[fs_len - 1] = '\0';
1264 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1265 g_string_truncate(label_s, 0);
1266 for (i = 0; i < string_fmts->len; i++) {
1267 sf = g_ptr_array_index(string_fmts, i);
1269 g_string_append(label_s, sf->plain);
1271 switch (sf->format) {
1273 g_string_append(label_s, hfinfo->name);
1276 g_string_append(label_s, fs_ptr);
1279 switch(hfinfo->type) {
1281 uvalue = fvalue_get_uinteger(&finfo->value);
1282 tfstring = (const struct true_false_string*) hfinfo->strings;
1283 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1289 DISSECTOR_ASSERT(!hfinfo->bitmask);
1290 svalue = fvalue_get_sinteger(&finfo->value);
1291 if (hfinfo->display & BASE_RANGE_STRING) {
1292 g_string_append(label_s, rval_to_str(svalue, hfinfo->strings, "Unknown"));
1294 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1300 uvalue = fvalue_get_uinteger(&finfo->value);
1301 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1302 g_string_append(label_s, rval_to_str(uvalue, hfinfo->strings, "Unknown"));
1304 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1316 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1320 if(finfo->value.ftype->val_to_string_repr)
1322 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1327 * This field doesn't have an associated value,
1331 printf(" %u=\"n.a.\"", cmd_line_index);
1336 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1342 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1349 * Print each occurrence of the field
1351 for (i = 0; i < gp->len; i++) {
1352 print_field_value(gp->pdata[i], rs->cmd_line_index);
1358 int g_cmd_line_index = 0;
1361 * field must be persistent - we don't g_strdup() it below
1364 protocolinfo_init(char *field)
1367 header_field_info *hfi;
1368 GString *error_string;
1370 hfi=proto_registrar_get_byname(field);
1372 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1376 printf("%u %s %s - ",
1378 ftenum_to_string(hfi),
1379 base_display_e_to_string(hfi->display));
1381 rs=g_malloc(sizeof(pci_t));
1382 rs->hf_index=hfi->id;
1384 rs->cmd_line_index = g_cmd_line_index++;
1386 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1388 /* error, we failed to attach to the tap. complain and clean up */
1389 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1391 g_string_free(error_string, TRUE);
1402 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1403 * and fill in string_fmt_parts.
1407 add_string_fmt(string_fmt_e format, gchar *plain) {
1408 string_fmt_t *sf = g_malloc(sizeof(string_fmt_t));
1410 sf->format = format;
1411 sf->plain = g_strdup(plain);
1413 g_ptr_array_add(string_fmts, sf);
1417 parse_field_string_format(gchar *format) {
1418 GString *plain_s = g_string_new("");
1426 len = strlen(format);
1427 g_ptr_array_set_size(string_fmts, 0);
1430 if (format[pos] == '%') {
1431 if (pos >= len) { /* There should always be a following character */
1435 if (plain_s->len > 0) {
1436 add_string_fmt(SF_NONE, plain_s->str);
1437 g_string_truncate(plain_s, 0);
1439 switch (format[pos]) {
1441 add_string_fmt(SF_NAME, NULL);
1444 add_string_fmt(SF_NUMVAL, NULL);
1447 add_string_fmt(SF_STRVAL, NULL);
1450 g_string_append_c(plain_s, '%');
1452 default: /* Invalid format */
1456 g_string_append_c(plain_s, format[pos]);
1461 if (plain_s->len > 0) {
1462 add_string_fmt(SF_NONE, plain_s->str);
1464 g_string_free(plain_s, TRUE);
1468 /****************************************************************************************
1469 * END OF FIELD EXTRACTION ROUTINES
1470 ****************************************************************************************/
1473 show_print_file_io_error(int err)
1478 cmdarg_err("Not all the packets could be printed because there is "
1479 "no space left on the file system.");
1484 cmdarg_err("Not all the packets could be printed because you are "
1485 "too close to, or over your disk quota.");
1490 cmdarg_err("An error occurred while printing packets: %s.",
1497 * Open/create errors are reported with an console message in Rawshark.
1500 open_failure_message(const char *filename, int err, gboolean for_writing)
1502 fprintf(stderr, "rawshark: ");
1503 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1504 fprintf(stderr, "\n");
1508 raw_cf_open(capture_file *cf, const char *fname)
1510 if ((fd = raw_pipe_open(fname)) < 0)
1513 /* The open succeeded. Fill in the information for this file. */
1515 /* Cleanup all data structures used for dissection. */
1516 cleanup_dissection();
1517 /* Initialize all data structures used for dissection. */
1521 cf->f_datalen = 0; /* not used, but set it anyway */
1523 /* Set the file name because we need it to set the follow stream filter.
1524 XXX - is that still true? We need it for other reasons, though,
1526 cf->filename = g_strdup(fname);
1528 /* Indicate whether it's a permanent or temporary file. */
1529 cf->is_tempfile = FALSE;
1531 /* If it's a temporary capture buffer file, mark it as not saved. */
1532 cf->user_saved = FALSE;
1534 cf->cd_t = WTAP_FILE_UNKNOWN;
1536 cf->drops_known = FALSE;
1538 cf->has_snap = FALSE;
1539 cf->snap = WTAP_MAX_PACKET_SIZE;
1540 nstime_set_zero(&cf->elapsed_time);
1541 nstime_set_unset(&first_ts);
1542 nstime_set_unset(&prev_dis_ts);
1543 nstime_set_unset(&prev_cap_ts);
1550 * General errors are reported with an console message in Rawshark.
1553 failure_message(const char *msg_format, va_list ap)
1555 fprintf(stderr, "rawshark: ");
1556 vfprintf(stderr, msg_format, ap);
1557 fprintf(stderr, "\n");
1561 * Read errors are reported with an console message in Rawshark.
1564 read_failure_message(const char *filename, int err)
1566 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1567 filename, strerror(err));
1571 * Write errors are reported with an console message in Rawshark.
1574 write_failure_message(const char *filename, int err)
1576 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1577 filename, strerror(err));
1581 * Report an error in command-line arguments.
1584 cmdarg_err(const char *fmt, ...)
1589 fprintf(stderr, "rawshark: ");
1590 vfprintf(stderr, fmt, ap);
1591 fprintf(stderr, "\n");
1596 * Report additional information for an error in command-line arguments.
1599 cmdarg_err_cont(const char *fmt, ...)
1604 vfprintf(stderr, fmt, ap);
1605 fprintf(stderr, "\n");
1610 /****************************************************************************************************************/
1611 /* other "dummies" */
1613 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1615 /* shouldn't happen */
1616 g_assert_not_reached();
1625 * indent-tabs-mode: t
1628 * ex: set shiftwidth=4 tabstop=4 noexpandtab
1629 * :indentSize=4:tabSize=4:noTabs=false: