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
65 #include "wsutil/strerror.h"
71 #include "wsutil/wsgetopt.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>
105 #include <wiretap/wtap.h>
106 #include <wiretap/libpcap.h>
107 #include <wiretap/pcap-encap.h>
111 #include "capture-pcap-util.h"
114 #include "capture-wpcap.h"
115 #include "capture_errs.h"
117 #endif /* HAVE_LIBPCAP */
121 #include <shellapi.h>
125 * This is the template for the decode as option; it is shared between the
126 * various functions that output the usage for this parameter.
128 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
130 static guint32 cum_bytes;
131 static nstime_t first_ts;
132 static nstime_t prev_dis_ts;
133 static nstime_t prev_cap_ts;
136 * The way the packet decode is to be written.
139 WRITE_TEXT, /* summary or detail text */
140 WRITE_XML /* PDML or PSML */
141 /* Add CSV and the like here */
144 static gboolean line_buffered;
145 static print_format_e print_format = PR_FMT_TEXT;
147 static gboolean want_pcap_pkthdr;
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, " -d <encap:dlt>|<proto:protoname>\n");
212 fprintf(output, " packet encapsulation or protocol\n");
213 fprintf(output, " -F <field> field to display\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, " -p use the system's packet header format (which may have 64-bit timestamps)\n");
217 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
218 fprintf(output, " -s skip PCAP header on input\n");
220 /*fprintf(output, "\n");*/
221 fprintf(output, "Output:\n");
222 fprintf(output, " -l flush output after each packet\n");
223 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval)\n");
224 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
226 fprintf(output, "\n");
227 fprintf(output, "Miscellaneous:\n");
228 fprintf(output, " -h display this help and exit\n");
229 fprintf(output, " -o <name>:<value> ... override preference setting\n");
230 fprintf(output, " -v display version info and exit\n");
234 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
235 const gchar *message _U_, gpointer user_data _U_)
240 * Open a pipe for raw input. This is a stripped-down version of
241 * pcap_loop.c:cap_pipe_open_live().
242 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
243 * @param pipe_name The name of the pipe or FIFO.
244 * @return A POSIX file descriptor on success, or -1 on failure.
247 raw_pipe_open(const char *pipe_name)
250 struct stat pipe_stat;
259 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
262 * XXX Rawshark blocks until we return
264 if (strcmp(pipe_name, "-") == 0) {
265 rfd = 0; /* read from stdin */
268 * This is needed to set the stdin pipe into binary mode, otherwise
269 * CR/LF are mangled...
271 _setmode(0, _O_BINARY);
275 if (ws_stat(pipe_name, &pipe_stat) < 0) {
276 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
277 pipe_name, strerror(errno));
280 if (! S_ISFIFO(pipe_stat.st_mode)) {
281 if (S_ISCHR(pipe_stat.st_mode)) {
283 * Assume the user specified an interface on a system where
284 * interfaces are in /dev. Pretend we haven't seen it.
288 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
293 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
295 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
296 pipe_name, strerror(errno));
300 #define PIPE_STR "\\pipe\\"
301 /* Under Windows, named pipes _must_ have the form
302 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
304 pncopy = g_strdup(pipe_name);
305 if (strstr(pncopy, "\\\\") == pncopy) {
306 pos = strchr(pncopy + 3, '\\');
307 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
314 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
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 err = GetLastError();
328 if (err != ERROR_PIPE_BUSY) {
329 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
330 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
331 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
332 pipe_name, utf_16to8(err_str), err);
337 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
338 err = GetLastError();
339 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
340 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
341 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
342 pipe_name, utf_16to8(err_str), err);
348 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
350 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
351 pipe_name, strerror(errno));
361 * Parse a link-type argument of the form "encap:<pcap dlt>" or
362 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
363 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
364 * a protocol name, e.g. "http".
367 set_link_type(const char *lt_arg) {
368 char *spec_ptr = strchr(lt_arg, ':');
372 dissector_handle_t dhandle;
380 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
381 dlt_val = linktype_name_to_val(spec_ptr);
384 val = strtol(spec_ptr, &p, 10);
385 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
390 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
391 if (encap == WTAP_ENCAP_UNKNOWN) {
395 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
396 dhandle = find_dissector(spec_ptr);
398 encap = WTAP_ENCAP_USER0;
399 pref_str = g_string_new("uat:user_dlts:");
400 /* This must match the format used in the user_dlts file */
401 g_string_append_printf(pref_str,
402 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
404 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
405 g_string_free(pref_str, TRUE);
408 g_string_free(pref_str, TRUE);
416 show_version(GString *comp_info_str, GString *runtime_info_str)
418 printf("Rawshark " VERSION "%s\n"
425 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
426 runtime_info_str->str);
430 main(int argc, char *argv[])
432 char *init_progfile_dir_error;
434 gboolean arg_error = FALSE;
442 char *gpf_path, *pf_path;
443 char *gdp_path, *dp_path;
444 int gpf_open_errno, gpf_read_errno;
445 int pf_open_errno, pf_read_errno;
446 int gdp_open_errno, gdp_read_errno;
447 int dp_open_errno, dp_read_errno;
449 gchar *pipe_name = NULL;
453 GLogLevelFlags log_flags;
454 GPtrArray *disp_fields = g_ptr_array_new();
456 gboolean skip_pcap_header = FALSE;
458 #define OPTSTRING_INIT "d:F:hlnN:o:pr:R:sS:t:v"
460 static const char optstring[] = OPTSTRING_INIT;
463 /* Convert our arg list to UTF-8. */
464 wc_argv = CommandLineToArgvW(GetCommandLineW(), &wc_argc);
465 if (wc_argv && wc_argc == argc) {
466 for (i = 0; i < argc; i++) {
467 argv[i] = g_utf16_to_utf8(wc_argv[i], -1, NULL, NULL, NULL);
469 } /* XXX else bail because something is horribly, horribly wrong? */
473 * Get credential information for later use.
475 init_process_policies();
478 * Clear the filters arrays
480 memset(rfilters, 0, sizeof(rfilters));
481 memset(rfcodes, 0, sizeof(rfcodes));
486 * Initialize our string format
488 string_fmts = g_ptr_array_new();
491 * Attempt to get the pathname of the executable file.
493 init_progfile_dir_error = init_progfile_dir(argv[0], main);
494 if (init_progfile_dir_error != NULL) {
495 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
496 init_progfile_dir_error);
500 * Get credential information for later use.
502 init_process_policies();
504 /* nothing more than the standard GLib handler, but without a warning */
506 G_LOG_LEVEL_WARNING |
507 G_LOG_LEVEL_MESSAGE |
511 g_log_set_handler(NULL,
513 log_func_ignore, NULL /* user_data */);
514 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
516 log_func_ignore, NULL /* user_data */);
518 timestamp_set_type(TS_RELATIVE);
519 timestamp_set_precision(TS_PREC_AUTO);
520 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
522 /* Register all dissectors; we must do this before checking for the
523 "-G" flag, as the "-G" flag dumps information registered by the
524 dissectors, and we must do it before we read the preferences, in
525 case any dissectors register preferences. */
526 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
527 failure_message, open_failure_message, read_failure_message,
528 write_failure_message);
530 /* Now register the preferences for any non-dissector modules.
531 We must do that before we read the preferences as well. */
532 prefs_register_modules();
534 /* Set the C-language locale to the native environment. */
535 setlocale(LC_ALL, "");
537 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
538 &pf_open_errno, &pf_read_errno, &pf_path);
539 if (gpf_path != NULL) {
540 if (gpf_open_errno != 0) {
541 cmdarg_err("Can't open global preferences file \"%s\": %s.",
542 pf_path, strerror(gpf_open_errno));
544 if (gpf_read_errno != 0) {
545 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
546 pf_path, strerror(gpf_read_errno));
549 if (pf_path != NULL) {
550 if (pf_open_errno != 0) {
551 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
552 strerror(pf_open_errno));
554 if (pf_read_errno != 0) {
555 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
556 pf_path, strerror(pf_read_errno));
562 /* Set the name resolution code's flags from the preferences. */
563 gbl_resolv_flags = prefs_p->name_resolve;
565 /* Read the disabled protocols file. */
566 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
567 &dp_path, &dp_open_errno, &dp_read_errno);
568 if (gdp_path != NULL) {
569 if (gdp_open_errno != 0) {
570 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
571 gdp_path, strerror(gdp_open_errno));
573 if (gdp_read_errno != 0) {
574 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
575 gdp_path, strerror(gdp_read_errno));
579 if (dp_path != NULL) {
580 if (dp_open_errno != 0) {
582 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
583 strerror(dp_open_errno));
585 if (dp_read_errno != 0) {
587 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
588 strerror(dp_read_errno));
594 /* Load Wpcap, if possible */
598 cap_file_init(&cfile);
600 /* Print format defaults to this. */
601 print_format = PR_FMT_TEXT;
603 /* Initialize our encapsulation type */
604 encap = WTAP_ENCAP_UNKNOWN;
606 /* Now get our args */
607 /* XXX - We should probably have an option to dump libpcap link types */
608 while ((opt = getopt(argc, argv, optstring)) != -1) {
610 case 'd': /* Payload type */
611 if (!set_link_type(optarg)) {
612 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
616 case 'F': /* Read field to display */
617 g_ptr_array_add(disp_fields, g_strdup(optarg));
619 case 'h': /* Print help and exit */
623 case 'l': /* "Line-buffer" standard output */
624 /* This isn't line-buffering, strictly speaking, it's just
625 flushing the standard output after the information for
626 each packet is printed; however, that should be good
627 enough for all the purposes to which "-l" is put (and
628 is probably actually better for "-V", as it does fewer
631 See the comment in "process_packet()" for an explanation of
632 why we do that, and why we don't just use "setvbuf()" to
633 make the standard output line-buffered (short version: in
634 Windows, "line-buffered" is the same as "fully-buffered",
635 and the output buffer is only flushed when it fills up). */
636 line_buffered = TRUE;
638 case 'n': /* No name resolution */
639 gbl_resolv_flags = RESOLV_NONE;
641 case 'N': /* Select what types of addresses/port #s to resolve */
642 if (gbl_resolv_flags == RESOLV_ALL)
643 gbl_resolv_flags = RESOLV_NONE;
644 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
645 if (badopt != '\0') {
646 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
651 case 'o': /* Override preference from command line */
652 switch (prefs_set_pref(optarg)) {
657 case PREFS_SET_SYNTAX_ERR:
658 cmdarg_err("Invalid -o flag \"%s\"", optarg);
662 case PREFS_SET_NO_SUCH_PREF:
663 case PREFS_SET_OBSOLETE:
664 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
669 case 'p': /* Expect pcap_pkthdr packet headers, which may have 64-bit timestamps */
670 want_pcap_pkthdr = TRUE;
672 case 'r': /* Read capture file xxx */
673 pipe_name = g_strdup(optarg);
675 case 'R': /* Read file filter */
676 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
677 rfilters[n_rfilters++] = optarg;
680 cmdarg_err("Too many display filters");
684 case 's': /* Skip PCAP header */
685 skip_pcap_header = TRUE;
687 case 'S': /* Print string representations */
688 if (!parse_field_string_format(optarg)) {
689 cmdarg_err("Invalid field string format");
693 case 't': /* Time stamp type */
694 if (strcmp(optarg, "r") == 0)
695 timestamp_set_type(TS_RELATIVE);
696 else if (strcmp(optarg, "a") == 0)
697 timestamp_set_type(TS_ABSOLUTE);
698 else if (strcmp(optarg, "ad") == 0)
699 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
700 else if (strcmp(optarg, "d") == 0)
701 timestamp_set_type(TS_DELTA);
702 else if (strcmp(optarg, "dd") == 0)
703 timestamp_set_type(TS_DELTA_DIS);
704 else if (strcmp(optarg, "e") == 0)
705 timestamp_set_type(TS_EPOCH);
707 cmdarg_err("Invalid time stamp type \"%s\"",
709 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
710 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
714 case 'v': /* Show version and exit */
716 GString *comp_info_str;
717 GString *runtime_info_str;
718 /* Assemble the compile-time version information string */
719 comp_info_str = g_string_new("Compiled ");
720 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
722 /* Assemble the run-time version information string */
723 runtime_info_str = g_string_new("Running ");
724 get_runtime_version_info(runtime_info_str, NULL);
725 show_version(comp_info_str, runtime_info_str);
726 g_string_free(comp_info_str, TRUE);
727 g_string_free(runtime_info_str, TRUE);
732 case '?': /* Bad flag - print usage message */
739 /* Notify all registered modules that have had any of their preferences
740 changed either from one of the preferences file or from the command
741 line that their preferences have changed.
742 Initialize preferences before display filters, otherwise modules
743 like MATE won't work. */
746 /* Initialize our display fields */
747 for (fc = 0; fc < disp_fields->len; fc++) {
748 protocolinfo_init((char *)g_ptr_array_index(disp_fields, fc));
750 g_ptr_array_free(disp_fields, TRUE);
754 /* If no capture filter or read filter has been specified, and there are
755 still command-line arguments, treat them as the tokens of a capture
756 filter (if no "-r" flag was specified) or a read filter (if a "-r"
757 flag was specified. */
759 if (pipe_name != NULL) {
760 if (n_rfilters != 0) {
761 cmdarg_err("Read filters were specified both with \"-R\" "
762 "and with additional command-line arguments");
765 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
769 /* Make sure we got a dissector handle for our payload. */
770 if (encap == WTAP_ENCAP_UNKNOWN) {
771 cmdarg_err("No valid payload dissector specified.");
782 /* Start windows sockets */
783 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
786 /* At this point MATE will have registered its field array so we can
787 have a tap filter with one of MATE's late-registered fields as part
788 of the filter. We can now process all the "-z" arguments. */
789 start_requested_stats();
791 /* disabled protocols as per configuration file */
792 if (gdp_path == NULL && dp_path == NULL) {
793 set_disabled_protos_list();
796 /* Build the column format array */
797 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
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, const gchar **err_info, gint64 *data_offset) {
901 struct pcap_pkthdr mem_hdr;
902 struct pcaprec_hdr disk_hdr;
904 int bytes_needed = sizeof(disk_hdr);
905 guchar *ptr = (guchar*) &disk_hdr;
906 static gchar err_str[100];
908 if (want_pcap_pkthdr) {
909 bytes_needed = sizeof(mem_hdr);
910 ptr = (guchar*) &mem_hdr;
913 /* Copied from capture_loop.c */
914 while (bytes_needed > 0) {
915 bytes_read = read(fd, ptr, bytes_needed);
916 if (bytes_read == 0) {
919 } else if (bytes_read < 0) {
920 *err = WTAP_ERR_CANT_READ;
921 *err_info = "Error reading header from pipe";
924 bytes_needed -= bytes_read;
925 *data_offset += bytes_read;
929 if (want_pcap_pkthdr) {
930 phdr->ts.secs = mem_hdr.ts.tv_sec;
931 phdr->ts.nsecs = mem_hdr.ts.tv_usec * 1000;
932 phdr->caplen = bytes_needed = mem_hdr.caplen;
933 phdr->len = mem_hdr.len;
935 phdr->ts.secs = disk_hdr.ts_sec;
936 phdr->ts.nsecs = disk_hdr.ts_usec * 1000;
937 phdr->caplen = bytes_needed = disk_hdr.incl_len;
938 phdr->len = disk_hdr.orig_len;
941 phdr->pkt_encap = encap;
944 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
945 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
946 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
947 printf("len: %d (%04x)\n", hdr.len, hdr.len);
949 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
950 *err = WTAP_ERR_BAD_RECORD;
951 g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
957 while (bytes_needed > 0) {
958 bytes_read = read(fd, ptr, bytes_needed);
959 if (bytes_read == 0) {
960 *err = WTAP_ERR_SHORT_READ;
961 *err_info = "Got zero bytes reading data from pipe";
963 } else if (bytes_read < 0) {
964 *err = WTAP_ERR_CANT_READ;
965 *err_info = "Error reading data from pipe";
968 bytes_needed -= bytes_read;
969 *data_offset += bytes_read;
976 load_cap_file(capture_file *cf)
979 const gchar *err_info;
980 gint64 data_offset = 0;
981 struct wtap_pkthdr phdr;
982 guchar pd[WTAP_MAX_PACKET_SIZE];
984 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
985 process_packet(cf, data_offset, &phdr, pd);
989 /* Print a message noting that the read failed somewhere along the line. */
992 case WTAP_ERR_UNSUPPORTED_ENCAP:
993 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
994 cf->filename, err_info);
997 case WTAP_ERR_CANT_READ:
998 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
1002 case WTAP_ERR_SHORT_READ:
1003 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
1007 case WTAP_ERR_BAD_RECORD:
1008 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
1009 cf->filename, err_info);
1013 cmdarg_err("An error occurred while reading \"%s\": %s.",
1014 cf->filename, wtap_strerror(err));
1023 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
1027 gboolean create_proto_tree;
1030 union wtap_pseudo_header pseudo_header;
1035 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1036 packets to process. We spit out a line with the timestamp and the text "void"
1038 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1039 (unsigned long int)whdr->ts.secs,
1040 (unsigned long int)whdr->ts.nsecs);
1047 memset(&pseudo_header, 0, sizeof(pseudo_header));
1049 /* Count this packet. */
1052 /* If we're going to print packet information, or we're going to
1053 run a read filter, or we're going to process taps, set up to
1054 do a dissection and do so. */
1055 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1058 create_proto_tree = TRUE;
1060 /* The protocol tree will be "visible", i.e., printed, only if we're
1061 printing packet details, which is true if we're in verbose mode ("verbose"
1063 epan_dissect_init(&edt, create_proto_tree, FALSE);
1065 /* If we're running a read filter, prime the epan_dissect_t with that
1067 if (n_rfilters > 0) {
1068 for(i = 0; i < n_rfcodes; i++) {
1069 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1073 tap_queue_init(&edt);
1075 printf("%lu", (unsigned long int) cf->count);
1077 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1078 &first_ts, &prev_dis_ts, &prev_cap_ts);
1080 /* We only need the columns if we're printing packet info but we're
1081 *not* verbose; in verbose mode, we print the protocol tree, not
1082 the protocol summary. */
1083 epan_dissect_run(&edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1085 tap_push_tapped_queue(&edt);
1087 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
1089 for(i = 0; i < n_rfilters; i++) {
1090 /* Run the read filter if we have one. */
1092 passed = dfilter_apply_edt(rfcodes[i], &edt);
1096 /* Print a one-line summary */
1097 printf(" %u", passed ? 1 : 0);
1102 /* The ANSI C standard does not appear to *require* that a line-buffered
1103 stream be flushed to the host environment whenever a newline is
1104 written, it just says that, on such a stream, characters "are
1105 intended to be transmitted to or from the host environment as a
1106 block when a new-line character is encountered".
1108 The Visual C++ 6.0 C implementation doesn't do what is intended;
1109 even if you set a stream to be line-buffered, it still doesn't
1110 flush the buffer at the end of every line.
1112 So, if the "-l" flag was specified, we flush the standard output
1113 at the end of a packet. This will do the right thing if we're
1114 printing packet summary lines, and, as we print the entire protocol
1115 tree for a single packet without waiting for anything to happen,
1116 it should be as good as line-buffered mode if we're printing
1117 protocol trees. (The whole reason for the "-l" flag in either
1118 tcpdump or Rawshark is to allow the output of a live capture to
1119 be piped to a program or script and to have that script see the
1120 information for the packet as soon as it's printed, rather than
1121 having to wait until a standard I/O buffer fills up. */
1125 if (ferror(stdout)) {
1126 show_print_file_io_error(errno);
1130 epan_dissect_cleanup(&edt);
1131 frame_data_cleanup(&fdata);
1136 /****************************************************************************************
1137 * FIELD EXTRACTION ROUTINES
1138 ****************************************************************************************/
1139 typedef struct _pci_t {
1145 static const char* ftenum_to_string(header_field_info *hfi)
1151 if (string_fmts->len > 0 && hfi->strings) {
1159 return "FT_PROTOCOL";
1161 return "FT_BOOLEAN";
1186 case FT_ABSOLUTE_TIME:
1187 return "FT_ABSOLUTE_TIME";
1188 case FT_RELATIVE_TIME:
1189 return "FT_RELATIVE_TIME";
1193 return "FT_STRINGZ";
1194 case FT_UINT_STRING:
1195 return "FT_UINT_STRING";
1201 return "FT_UINT_BYTES";
1209 return "FT_FRAMENUM";
1217 return "FT_NUM_TYPES";
1223 static const char* absolute_time_display_e_to_string(absolute_time_display_e atd)
1226 case ABSOLUTE_TIME_LOCAL:
1227 return "ABSOLUTE_TIME_LOCAL";
1228 case ABSOLUTE_TIME_UTC:
1229 return "ABSOLUTE_TIME_UTC";
1235 static const char* base_display_e_to_string(base_display_e bd)
1247 return "BASE_DEC_HEX";
1249 return "BASE_HEX_DEC";
1256 * Copied from various parts of proto.c
1258 #define FIELD_STR_INIT_LEN 256
1259 #define cVALS(x) (const value_string*)(x)
1260 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1262 header_field_info *hfinfo;
1263 static char *fs_buf = NULL;
1264 char *fs_ptr = fs_buf;
1265 static GString *label_s = NULL;
1266 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1271 const true_false_string *tfstring = &tfs_true_false;
1273 hfinfo = finfo->hfinfo;
1276 fs_buf = (char *)g_malloc(fs_buf_len + 1);
1281 label_s = g_string_new("");
1284 if(finfo->value.ftype->val_to_string_repr)
1287 * this field has an associated value,
1290 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1291 while (fs_buf_len < fs_len) {
1293 fs_buf = (char *)g_realloc(fs_buf, fs_buf_len + 1);
1296 fvalue_to_string_repr(&finfo->value,
1300 /* String types are quoted. Remove them. */
1301 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1302 fs_buf[fs_len - 1] = '\0';
1307 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1308 g_string_truncate(label_s, 0);
1309 for (i = 0; i < string_fmts->len; i++) {
1310 sf = (string_fmt_t *)g_ptr_array_index(string_fmts, i);
1312 g_string_append(label_s, sf->plain);
1314 switch (sf->format) {
1316 g_string_append(label_s, hfinfo->name);
1319 g_string_append(label_s, fs_ptr);
1322 switch(hfinfo->type) {
1324 uvalue = fvalue_get_uinteger(&finfo->value);
1325 tfstring = (const struct true_false_string*) hfinfo->strings;
1326 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1332 DISSECTOR_ASSERT(!hfinfo->bitmask);
1333 svalue = fvalue_get_sinteger(&finfo->value);
1334 if (hfinfo->display & BASE_RANGE_STRING) {
1335 g_string_append(label_s, rval_to_str(svalue, RVALS(hfinfo->strings), "Unknown"));
1337 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1344 uvalue = fvalue_get_uinteger(&finfo->value);
1345 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1346 g_string_append(label_s, rval_to_str(uvalue, RVALS(hfinfo->strings), "Unknown"));
1348 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1360 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1364 if(finfo->value.ftype->val_to_string_repr)
1366 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1371 * This field doesn't have an associated value,
1375 printf(" %u=\"n.a.\"", cmd_line_index);
1380 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1382 pci_t *rs=(pci_t *)prs;
1386 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1393 * Print each occurrence of the field
1395 for (i = 0; i < gp->len; i++) {
1396 print_field_value((field_info *)gp->pdata[i], rs->cmd_line_index);
1402 int g_cmd_line_index = 0;
1405 * field must be persistent - we don't g_strdup() it below
1408 protocolinfo_init(char *field)
1411 header_field_info *hfi;
1412 GString *error_string;
1414 hfi=proto_registrar_get_byname(field);
1416 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1420 switch (hfi->type) {
1422 case FT_ABSOLUTE_TIME:
1423 printf("%u %s %s - ",
1425 ftenum_to_string(hfi),
1426 absolute_time_display_e_to_string(hfi->display));
1431 printf("%u %s %s - ",
1433 ftenum_to_string(hfi),
1434 base_display_e_to_string(hfi->display));
1438 rs=(pci_t *)g_malloc(sizeof(pci_t));
1439 rs->hf_index=hfi->id;
1441 rs->cmd_line_index = g_cmd_line_index++;
1443 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1445 /* error, we failed to attach to the tap. complain and clean up */
1446 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1448 g_string_free(error_string, TRUE);
1459 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1460 * and fill in string_fmt_parts.
1464 add_string_fmt(string_fmt_e format, gchar *plain) {
1465 string_fmt_t *sf = (string_fmt_t *)g_malloc(sizeof(string_fmt_t));
1467 sf->format = format;
1468 sf->plain = g_strdup(plain);
1470 g_ptr_array_add(string_fmts, sf);
1474 parse_field_string_format(gchar *format) {
1475 GString *plain_s = g_string_new("");
1483 len = strlen(format);
1484 g_ptr_array_set_size(string_fmts, 0);
1487 if (format[pos] == '%') {
1488 if (pos >= len) { /* There should always be a following character */
1492 if (plain_s->len > 0) {
1493 add_string_fmt(SF_NONE, plain_s->str);
1494 g_string_truncate(plain_s, 0);
1496 switch (format[pos]) {
1498 add_string_fmt(SF_NAME, NULL);
1501 add_string_fmt(SF_NUMVAL, NULL);
1504 add_string_fmt(SF_STRVAL, NULL);
1507 g_string_append_c(plain_s, '%');
1509 default: /* Invalid format */
1513 g_string_append_c(plain_s, format[pos]);
1518 if (plain_s->len > 0) {
1519 add_string_fmt(SF_NONE, plain_s->str);
1521 g_string_free(plain_s, TRUE);
1525 /****************************************************************************************
1526 * END OF FIELD EXTRACTION ROUTINES
1527 ****************************************************************************************/
1530 show_print_file_io_error(int err)
1535 cmdarg_err("Not all the packets could be printed because there is "
1536 "no space left on the file system.");
1541 cmdarg_err("Not all the packets could be printed because you are "
1542 "too close to, or over your disk quota.");
1547 cmdarg_err("An error occurred while printing packets: %s.",
1554 * Open/create errors are reported with an console message in Rawshark.
1557 open_failure_message(const char *filename, int err, gboolean for_writing)
1559 fprintf(stderr, "rawshark: ");
1560 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1561 fprintf(stderr, "\n");
1565 raw_cf_open(capture_file *cf, const char *fname)
1567 if ((fd = raw_pipe_open(fname)) < 0)
1570 /* The open succeeded. Fill in the information for this file. */
1572 /* Cleanup all data structures used for dissection. */
1573 cleanup_dissection();
1574 /* Initialize all data structures used for dissection. */
1578 cf->f_datalen = 0; /* not used, but set it anyway */
1580 /* Set the file name because we need it to set the follow stream filter.
1581 XXX - is that still true? We need it for other reasons, though,
1583 cf->filename = g_strdup(fname);
1585 /* Indicate whether it's a permanent or temporary file. */
1586 cf->is_tempfile = FALSE;
1588 /* If it's a temporary capture buffer file, mark it as not saved. */
1589 cf->user_saved = FALSE;
1591 cf->cd_t = WTAP_FILE_UNKNOWN;
1593 cf->drops_known = FALSE;
1595 cf->has_snap = FALSE;
1596 cf->snap = WTAP_MAX_PACKET_SIZE;
1597 nstime_set_zero(&cf->elapsed_time);
1598 nstime_set_unset(&first_ts);
1599 nstime_set_unset(&prev_dis_ts);
1600 nstime_set_unset(&prev_cap_ts);
1607 * General errors are reported with an console message in Rawshark.
1610 failure_message(const char *msg_format, va_list ap)
1612 fprintf(stderr, "rawshark: ");
1613 vfprintf(stderr, msg_format, ap);
1614 fprintf(stderr, "\n");
1618 * Read errors are reported with an console message in Rawshark.
1621 read_failure_message(const char *filename, int err)
1623 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1624 filename, strerror(err));
1628 * Write errors are reported with an console message in Rawshark.
1631 write_failure_message(const char *filename, int err)
1633 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1634 filename, strerror(err));
1638 * Report an error in command-line arguments.
1641 cmdarg_err(const char *fmt, ...)
1646 fprintf(stderr, "rawshark: ");
1647 vfprintf(stderr, fmt, ap);
1648 fprintf(stderr, "\n");
1653 * Report additional information for an error in command-line arguments.
1656 cmdarg_err_cont(const char *fmt, ...)
1661 vfprintf(stderr, fmt, ap);
1662 fprintf(stderr, "\n");
1673 * indent-tabs-mode: nil
1676 * ex: set shiftwidth=4 tabstop=8 expandtab
1677 * :indentSize=4:tabSize=8:noTabs=true: