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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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.
58 #ifdef HAVE_SYS_STAT_H
59 # include <sys/stat.h>
63 #include "wsutil/wsgetopt.h"
67 #include <epan/epan.h>
68 #include <epan/filesystem.h>
69 #include <wsutil/crash_info.h>
70 #include <wsutil/privileges.h>
71 #include <wsutil/file_util.h>
74 #include <epan/packet.h>
76 #include "frame_tvbuff.h"
77 #include <epan/disabled_protos.h>
78 #include <epan/prefs.h>
79 #include <epan/column.h>
80 #include <epan/print.h>
81 #include <epan/addr_resolv.h>
83 #include "clopts_common.h"
84 #include "cmdarg_err.h"
85 #include "version_info.h"
86 #include <epan/plugins.h>
88 #include "conditions.h"
89 #include "capture_stop_conditions.h"
90 #include "capture_ui_utils.h"
91 #include <epan/epan_dissect.h>
92 #include <epan/stat_cmd_args.h>
93 #include <epan/timestamp.h>
94 #include <wsutil/unicode-utils.h>
95 #include "epan/column-utils.h"
96 #include "epan/proto.h"
99 #include <wiretap/wtap.h>
100 #include <wiretap/libpcap.h>
101 #include <wiretap/pcap-encap.h>
105 #include "capture-pcap-util.h"
107 #include "capture-wpcap.h"
109 #endif /* HAVE_LIBPCAP */
113 #include <wsutil/unicode-utils.h>
117 * This is the template for the decode as option; it is shared between the
118 * various functions that output the usage for this parameter.
120 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
122 static guint32 cum_bytes;
123 static nstime_t first_ts;
124 static frame_data *prev_dis;
125 static frame_data prev_dis_frame;
126 static frame_data *prev_cap;
127 static frame_data prev_cap_frame;
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 */
138 static gboolean line_buffered;
139 static print_format_e print_format = PR_FMT_TEXT;
141 static gboolean want_pcap_pkthdr;
143 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
144 static int load_cap_file(capture_file *cf);
145 static gboolean process_packet(capture_file *cf, gint64 offset,
146 struct wtap_pkthdr *whdr, const guchar *pd);
147 static void show_print_file_io_error(int err);
149 static void open_failure_message(const char *filename, int err,
150 gboolean for_writing);
151 static void failure_message(const char *msg_format, va_list ap);
152 static void read_failure_message(const char *filename, int err);
153 static void write_failure_message(const char *filename, int err);
154 static void protocolinfo_init(char *field);
155 static gboolean parse_field_string_format(char *format);
158 SF_NONE, /* No format (placeholder) */
159 SF_NAME, /* %D Field name / description */
160 SF_NUMVAL, /* %N Numeric value */
161 SF_STRVAL /* %S String value */
164 typedef struct string_fmt_s {
166 string_fmt_e format; /* Valid if plain is NULL */
172 dfilter_t *rfcodes[64];
174 dfilter_t *rfieldfcodes[64];
177 GPtrArray *string_fmts;
180 print_usage(gboolean print_ver)
187 "Rawshark " VERSION "%s\n"
188 "Dump and analyze network traffic.\n"
189 "See http://www.wireshark.org for more information.\n"
192 wireshark_svnversion, get_copyright_info());
196 fprintf(output, "\n");
197 fprintf(output, "Usage: rawshark [options] ...\n");
198 fprintf(output, "\n");
200 fprintf(output, "Input file:\n");
201 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
203 fprintf(output, "\n");
204 fprintf(output, "Processing:\n");
205 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
206 fprintf(output, " packet encapsulation or protocol\n");
207 fprintf(output, " -F <field> field to display\n");
208 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
209 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
210 fprintf(output, " -p use the system's packet header format\n");
211 fprintf(output, " (which may have 64-bit timestamps)\n");
212 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
213 fprintf(output, " -s skip PCAP header on input\n");
215 fprintf(output, "\n");
216 fprintf(output, "Output:\n");
217 fprintf(output, " -l flush output after each packet\n");
218 fprintf(output, " -S format string for fields\n");
219 fprintf(output, " (%%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");
222 fprintf(output, "\n");
223 fprintf(output, "Miscellaneous:\n");
224 fprintf(output, " -h display this help and exit\n");
225 fprintf(output, " -o <name>:<value> ... override preference setting\n");
226 fprintf(output, " -v display version info and exit\n");
230 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
231 const gchar *message _U_, gpointer user_data _U_)
236 * Open a pipe for raw input. This is a stripped-down version of
237 * pcap_loop.c:cap_pipe_open_live().
238 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
239 * @param pipe_name The name of the pipe or FIFO.
240 * @return A POSIX file descriptor on success, or -1 on failure.
243 raw_pipe_open(const char *pipe_name)
246 ws_statb64 pipe_stat;
248 char *pncopy, *pos = NULL;
255 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
258 * XXX Rawshark blocks until we return
260 if (strcmp(pipe_name, "-") == 0) {
261 rfd = 0; /* read from stdin */
264 * This is needed to set the stdin pipe into binary mode, otherwise
265 * CR/LF are mangled...
267 _setmode(0, _O_BINARY);
271 if (ws_stat64(pipe_name, &pipe_stat) < 0) {
272 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
273 pipe_name, g_strerror(errno));
276 if (! S_ISFIFO(pipe_stat.st_mode)) {
277 if (S_ISCHR(pipe_stat.st_mode)) {
279 * Assume the user specified an interface on a system where
280 * interfaces are in /dev. Pretend we haven't seen it.
284 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
289 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
291 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
292 pipe_name, g_strerror(errno));
296 #define PIPE_STR "\\pipe\\"
297 /* Under Windows, named pipes _must_ have the form
298 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
300 pncopy = g_strdup(pipe_name);
301 if (strstr(pncopy, "\\\\") == pncopy) {
302 pos = strchr(pncopy + 3, '\\');
303 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
310 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
315 /* Wait for the pipe to appear */
317 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
318 OPEN_EXISTING, 0, NULL);
320 if (hPipe != INVALID_HANDLE_VALUE)
323 err = GetLastError();
324 if (err != ERROR_PIPE_BUSY) {
325 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
326 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
327 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
328 pipe_name, utf_16to8(err_str), err);
333 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
334 err = GetLastError();
335 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
336 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
337 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
338 pipe_name, utf_16to8(err_str), err);
344 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
346 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
347 pipe_name, g_strerror(errno));
357 * Parse a link-type argument of the form "encap:<pcap dlt>" or
358 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
359 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
360 * a protocol name, e.g. "http".
363 set_link_type(const char *lt_arg) {
364 char *spec_ptr = strchr(lt_arg, ':');
368 dissector_handle_t dhandle;
376 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
377 dlt_val = linktype_name_to_val(spec_ptr);
380 val = strtol(spec_ptr, &p, 10);
381 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
386 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
387 if (encap == WTAP_ENCAP_UNKNOWN) {
391 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
392 dhandle = find_dissector(spec_ptr);
394 encap = WTAP_ENCAP_USER0;
395 pref_str = g_string_new("uat:user_dlts:");
396 /* This must match the format used in the user_dlts file */
397 g_string_append_printf(pref_str,
398 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
400 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
401 g_string_free(pref_str, TRUE);
404 g_string_free(pref_str, TRUE);
412 show_version(GString *comp_info_str, GString *runtime_info_str)
414 printf("Rawshark " VERSION "%s\n"
421 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
422 runtime_info_str->str);
426 main(int argc, char *argv[])
428 GString *comp_info_str;
429 GString *runtime_info_str;
430 char *init_progfile_dir_error;
432 gboolean arg_error = FALSE;
438 char *gpf_path, *pf_path;
439 char *gdp_path, *dp_path;
440 int gpf_open_errno, gpf_read_errno;
441 int pf_open_errno, pf_read_errno;
442 int gdp_open_errno, gdp_read_errno;
443 int dp_open_errno, dp_read_errno;
445 gchar *pipe_name = NULL;
450 GPtrArray *disp_fields = g_ptr_array_new();
452 gboolean skip_pcap_header = FALSE;
454 #define OPTSTRING_INIT "d:F:hlnN:o:pr:R:sS:t:v"
456 static const char optstring[] = OPTSTRING_INIT;
458 /* Assemble the compile-time version information string */
459 comp_info_str = g_string_new("Compiled ");
460 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
462 /* Assemble the run-time version information string */
463 runtime_info_str = g_string_new("Running ");
464 get_runtime_version_info(runtime_info_str, NULL);
466 /* Add it to the information to be reported on a crash. */
467 ws_add_crash_info("Rawshark " VERSION "%s\n"
472 wireshark_svnversion, comp_info_str->str, runtime_info_str->str);
475 arg_list_utf_16to8(argc, argv);
476 create_app_running_mutex();
480 * Get credential information for later use.
482 init_process_policies();
485 * Clear the filters arrays
487 memset(rfilters, 0, sizeof(rfilters));
488 memset(rfcodes, 0, sizeof(rfcodes));
493 * Initialize our string format
495 string_fmts = g_ptr_array_new();
498 * Attempt to get the pathname of the executable file.
500 init_progfile_dir_error = init_progfile_dir(argv[0], main);
501 if (init_progfile_dir_error != NULL) {
502 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
503 init_progfile_dir_error);
507 * Get credential information for later use.
509 init_process_policies();
511 /* nothing more than the standard GLib handler, but without a warning */
513 G_LOG_LEVEL_WARNING |
514 G_LOG_LEVEL_MESSAGE |
518 g_log_set_handler(NULL,
519 (GLogLevelFlags)log_flags,
520 log_func_ignore, NULL /* user_data */);
521 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
522 (GLogLevelFlags)log_flags,
523 log_func_ignore, NULL /* user_data */);
525 timestamp_set_type(TS_RELATIVE);
526 timestamp_set_precision(TS_PREC_AUTO);
527 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
529 /* Register all dissectors; we must do this before checking for the
530 "-G" flag, as the "-G" flag dumps information registered by the
531 dissectors, and we must do it before we read the preferences, in
532 case any dissectors register preferences. */
533 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
534 failure_message, open_failure_message, read_failure_message,
535 write_failure_message);
537 /* Set the C-language locale to the native environment. */
538 setlocale(LC_ALL, "");
540 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
541 &pf_open_errno, &pf_read_errno, &pf_path);
542 if (gpf_path != NULL) {
543 if (gpf_open_errno != 0) {
544 cmdarg_err("Can't open global preferences file \"%s\": %s.",
545 pf_path, g_strerror(gpf_open_errno));
547 if (gpf_read_errno != 0) {
548 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
549 pf_path, g_strerror(gpf_read_errno));
552 if (pf_path != NULL) {
553 if (pf_open_errno != 0) {
554 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
555 g_strerror(pf_open_errno));
557 if (pf_read_errno != 0) {
558 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
559 pf_path, g_strerror(pf_read_errno));
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, g_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, g_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 g_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 g_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.mac_name = FALSE;
640 gbl_resolv_flags.network_name = FALSE;
641 gbl_resolv_flags.transport_name = FALSE;
642 gbl_resolv_flags.concurrent_dns = FALSE;
644 case 'N': /* Select what types of addresses/port #s to resolve */
645 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
646 if (badopt != '\0') {
647 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
652 case 'o': /* Override preference from command line */
653 switch (prefs_set_pref(optarg)) {
658 case PREFS_SET_SYNTAX_ERR:
659 cmdarg_err("Invalid -o flag \"%s\"", optarg);
663 case PREFS_SET_NO_SUCH_PREF:
664 case PREFS_SET_OBSOLETE:
665 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
670 case 'p': /* Expect pcap_pkthdr packet headers, which may have 64-bit timestamps */
671 want_pcap_pkthdr = TRUE;
673 case 'r': /* Read capture file xxx */
674 pipe_name = g_strdup(optarg);
676 case 'R': /* Read file filter */
677 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
678 rfilters[n_rfilters++] = optarg;
681 cmdarg_err("Too many display filters");
685 case 's': /* Skip PCAP header */
686 skip_pcap_header = TRUE;
688 case 'S': /* Print string representations */
689 if (!parse_field_string_format(optarg)) {
690 cmdarg_err("Invalid field string format");
694 case 't': /* Time stamp type */
695 if (strcmp(optarg, "r") == 0)
696 timestamp_set_type(TS_RELATIVE);
697 else if (strcmp(optarg, "a") == 0)
698 timestamp_set_type(TS_ABSOLUTE);
699 else if (strcmp(optarg, "ad") == 0)
700 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
701 else if (strcmp(optarg, "d") == 0)
702 timestamp_set_type(TS_DELTA);
703 else if (strcmp(optarg, "dd") == 0)
704 timestamp_set_type(TS_DELTA_DIS);
705 else if (strcmp(optarg, "e") == 0)
706 timestamp_set_type(TS_EPOCH);
707 else if (strcmp(optarg, "u") == 0)
708 timestamp_set_type(TS_UTC);
709 else if (strcmp(optarg, "ud") == 0)
710 timestamp_set_type(TS_UTC_WITH_DATE);
712 cmdarg_err("Invalid time stamp type \"%s\"",
714 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
715 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
719 case 'v': /* Show version and exit */
721 show_version(comp_info_str, runtime_info_str);
722 g_string_free(comp_info_str, TRUE);
723 g_string_free(runtime_info_str, TRUE);
728 case '?': /* Bad flag - print usage message */
735 /* Notify all registered modules that have had any of their preferences
736 changed either from one of the preferences file or from the command
737 line that their preferences have changed.
738 Initialize preferences before display filters, otherwise modules
739 like MATE won't work. */
742 /* Initialize our display fields */
743 for (fc = 0; fc < disp_fields->len; fc++) {
744 protocolinfo_init((char *)g_ptr_array_index(disp_fields, fc));
746 g_ptr_array_free(disp_fields, TRUE);
750 /* If no capture filter or read filter has been specified, and there are
751 still command-line arguments, treat them as the tokens of a capture
752 filter (if no "-r" flag was specified) or a read filter (if a "-r"
753 flag was specified. */
755 if (pipe_name != NULL) {
756 if (n_rfilters != 0) {
757 cmdarg_err("Read filters were specified both with \"-R\" "
758 "and with additional command-line arguments");
761 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
765 /* Make sure we got a dissector handle for our payload. */
766 if (encap == WTAP_ENCAP_UNKNOWN) {
767 cmdarg_err("No valid payload dissector specified.");
778 /* Start windows sockets */
779 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
782 /* At this point MATE will have registered its field array so we can
783 have a tap filter with one of MATE's late-registered fields as part
784 of the filter. We can now process all the "-z" arguments. */
785 start_requested_stats();
787 /* disabled protocols as per configuration file */
788 if (gdp_path == NULL && dp_path == NULL) {
789 set_disabled_protos_list();
792 /* Build the column format array */
793 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
795 if (n_rfilters != 0) {
796 for (i = 0; i < n_rfilters; i++) {
797 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
798 cmdarg_err("%s", dfilter_error_msg);
808 * We're reading a pipe (or capture file).
812 * Immediately relinquish any special privileges we have; we must not
813 * be allowed to read any capture files the user running Rawshark
816 relinquish_special_privs_perm();
818 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
823 /* Do we need to PCAP header and magic? */
824 if (skip_pcap_header) {
825 size_t bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
826 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
827 while (bytes_left != 0) {
828 ssize_t bytes = read(fd, buf, (int)bytes_left);
830 cmdarg_err("Not enough bytes for pcap header.");
837 /* Set timestamp precision; there should arguably be a command-line
838 option to let the user set this. */
840 switch(wtap_file_tsprecision(cfile.wth)) {
841 case(WTAP_FILE_TSPREC_SEC):
842 timestamp_set_precision(TS_PREC_AUTO_SEC);
844 case(WTAP_FILE_TSPREC_DSEC):
845 timestamp_set_precision(TS_PREC_AUTO_DSEC);
847 case(WTAP_FILE_TSPREC_CSEC):
848 timestamp_set_precision(TS_PREC_AUTO_CSEC);
850 case(WTAP_FILE_TSPREC_MSEC):
851 timestamp_set_precision(TS_PREC_AUTO_MSEC);
853 case(WTAP_FILE_TSPREC_USEC):
854 timestamp_set_precision(TS_PREC_AUTO_USEC);
856 case(WTAP_FILE_TSPREC_NSEC):
857 timestamp_set_precision(TS_PREC_AUTO_NSEC);
860 g_assert_not_reached();
863 timestamp_set_precision(TS_PREC_AUTO_USEC);
866 /* Process the packets in the file */
867 err = load_cap_file(&cfile);
874 /* If you want to capture live packets, use TShark. */
875 cmdarg_err("Input file or pipe name not specified.");
885 * Read data from a raw pipe. The "raw" data consists of a libpcap
886 * packet header followed by the payload.
887 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
888 * of thing you want to use in Windows.
889 * @param phdr [OUT] Packet header information.
890 * @param err [OUT] Error indicator. Uses wiretap values.
891 * @param err_info [OUT] Error message.
892 * @param data_offset [OUT] data offset in the pipe.
893 * @return TRUE on success, FALSE on failure.
896 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, const gchar **err_info, gint64 *data_offset) {
897 struct pcap_pkthdr mem_hdr;
898 struct pcaprec_hdr disk_hdr;
899 ssize_t bytes_read = 0;
900 size_t bytes_needed = sizeof(disk_hdr);
901 guchar *ptr = (guchar*) &disk_hdr;
902 static gchar err_str[100];
904 if (want_pcap_pkthdr) {
905 bytes_needed = sizeof(mem_hdr);
906 ptr = (guchar*) &mem_hdr;
909 /* Copied from capture_loop.c */
910 while (bytes_needed > 0) {
911 bytes_read = read(fd, ptr, (int)bytes_needed);
912 if (bytes_read == 0) {
915 } else if (bytes_read < 0) {
916 *err = WTAP_ERR_CANT_READ;
917 *err_info = "Error reading header from pipe";
920 bytes_needed -= bytes_read;
921 *data_offset += bytes_read;
925 if (want_pcap_pkthdr) {
926 phdr->ts.secs = mem_hdr.ts.tv_sec;
927 phdr->ts.nsecs = mem_hdr.ts.tv_usec * 1000;
928 phdr->caplen = mem_hdr.caplen;
929 phdr->len = mem_hdr.len;
931 phdr->ts.secs = disk_hdr.ts_sec;
932 phdr->ts.nsecs = disk_hdr.ts_usec * 1000;
933 phdr->caplen = disk_hdr.incl_len;
934 phdr->len = disk_hdr.orig_len;
936 bytes_needed = phdr->caplen;
938 phdr->pkt_encap = encap;
941 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
942 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
943 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
944 printf("len: %d (%04x)\n", hdr.len, hdr.len);
946 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
947 *err = WTAP_ERR_BAD_FILE;
948 g_snprintf(err_str, 100, "Bad packet length: %lu\n",
949 (unsigned long) bytes_needed);
955 while (bytes_needed > 0) {
956 bytes_read = read(fd, ptr, (int)bytes_needed);
957 if (bytes_read == 0) {
958 *err = WTAP_ERR_SHORT_READ;
959 *err_info = "Got zero bytes reading data from pipe";
961 } else if (bytes_read < 0) {
962 *err = WTAP_ERR_CANT_READ;
963 *err_info = "Error reading data from pipe";
966 bytes_needed -= bytes_read;
967 *data_offset += bytes_read;
974 load_cap_file(capture_file *cf)
977 const gchar *err_info;
978 gint64 data_offset = 0;
979 struct wtap_pkthdr phdr;
980 guchar pd[WTAP_MAX_PACKET_SIZE];
982 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
983 process_packet(cf, data_offset, &phdr, pd);
987 /* Print a message noting that the read failed somewhere along the line. */
990 case WTAP_ERR_UNSUPPORTED_ENCAP:
991 cmdarg_err("The file \"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
992 cf->filename, err_info);
995 case WTAP_ERR_CANT_READ:
996 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
1000 case WTAP_ERR_SHORT_READ:
1001 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
1005 case WTAP_ERR_BAD_FILE:
1006 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
1007 cf->filename, err_info);
1010 case WTAP_ERR_DECOMPRESS:
1011 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n(%s)",
1012 cf->filename, err_info);
1016 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
1017 cf->filename, wtap_strerror(err));
1026 process_packet(capture_file *cf, gint64 offset, struct wtap_pkthdr *whdr,
1030 gboolean create_proto_tree;
1037 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1038 packets to process. We spit out a line with the timestamp and the text "void"
1040 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1041 (unsigned long int)whdr->ts.secs,
1042 (unsigned long int)whdr->ts.nsecs);
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 printf("%lu", (unsigned long int) cf->count);
1075 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1076 &first_ts, prev_dis, prev_cap);
1078 /* We only need the columns if we're printing packet info but we're
1079 *not* verbose; in verbose mode, we print the protocol tree, not
1080 the protocol summary. */
1081 epan_dissect_run_with_taps(&edt, whdr, frame_tvbuff_new(&fdata, pd), &fdata, &cf->cinfo);
1083 frame_data_set_after_dissect(&fdata, &cum_bytes);
1084 prev_dis_frame = fdata;
1085 prev_dis = &prev_dis_frame;
1087 prev_cap_frame = fdata;
1088 prev_cap = &prev_cap_frame;
1090 for(i = 0; i < n_rfilters; i++) {
1091 /* Run the read filter if we have one. */
1093 passed = dfilter_apply_edt(rfcodes[i], &edt);
1097 /* Print a one-line summary */
1098 printf(" %u", passed ? 1 : 0);
1103 /* The ANSI C standard does not appear to *require* that a line-buffered
1104 stream be flushed to the host environment whenever a newline is
1105 written, it just says that, on such a stream, characters "are
1106 intended to be transmitted to or from the host environment as a
1107 block when a new-line character is encountered".
1109 The Visual C++ 6.0 C implementation doesn't do what is intended;
1110 even if you set a stream to be line-buffered, it still doesn't
1111 flush the buffer at the end of every line.
1113 So, if the "-l" flag was specified, we flush the standard output
1114 at the end of a packet. This will do the right thing if we're
1115 printing packet summary lines, and, as we print the entire protocol
1116 tree for a single packet without waiting for anything to happen,
1117 it should be as good as line-buffered mode if we're printing
1118 protocol trees. (The whole reason for the "-l" flag in either
1119 tcpdump or Rawshark is to allow the output of a live capture to
1120 be piped to a program or script and to have that script see the
1121 information for the packet as soon as it's printed, rather than
1122 having to wait until a standard I/O buffer fills up. */
1126 if (ferror(stdout)) {
1127 show_print_file_io_error(errno);
1131 epan_dissect_cleanup(&edt);
1132 frame_data_destroy(&fdata);
1137 /****************************************************************************************
1138 * FIELD EXTRACTION ROUTINES
1139 ****************************************************************************************/
1140 typedef struct _pci_t {
1146 static const char* ftenum_to_string(header_field_info *hfi)
1152 if (string_fmts->len > 0 && hfi->strings) {
1160 return "FT_PROTOCOL";
1162 return "FT_BOOLEAN";
1187 case FT_ABSOLUTE_TIME:
1188 return "FT_ABSOLUTE_TIME";
1189 case FT_RELATIVE_TIME:
1190 return "FT_RELATIVE_TIME";
1194 return "FT_STRINGZ";
1195 case FT_UINT_STRING:
1196 return "FT_UINT_STRING";
1202 return "FT_UINT_BYTES";
1210 return "FT_FRAMENUM";
1218 return "FT_NUM_TYPES";
1224 static const char* absolute_time_display_e_to_string(absolute_time_display_e atd)
1227 case ABSOLUTE_TIME_LOCAL:
1228 return "ABSOLUTE_TIME_LOCAL";
1229 case ABSOLUTE_TIME_UTC:
1230 return "ABSOLUTE_TIME_UTC";
1236 static const char* base_display_e_to_string(base_display_e bd)
1248 return "BASE_DEC_HEX";
1250 return "BASE_HEX_DEC";
1257 * Copied from various parts of proto.c
1259 #define FIELD_STR_INIT_LEN 256
1260 #define cVALS(x) (const value_string*)(x)
1261 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1263 header_field_info *hfinfo;
1264 static char *fs_buf = NULL;
1265 char *fs_ptr = fs_buf;
1266 static GString *label_s = NULL;
1267 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1272 const true_false_string *tfstring = &tfs_true_false;
1274 hfinfo = finfo->hfinfo;
1277 fs_buf = (char *)g_malloc(fs_buf_len + 1);
1282 label_s = g_string_new("");
1285 if(finfo->value.ftype->val_to_string_repr)
1288 * this field has an associated value,
1291 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1292 while (fs_buf_len < fs_len) {
1294 fs_buf = (char *)g_realloc(fs_buf, fs_buf_len + 1);
1297 fvalue_to_string_repr(&finfo->value,
1301 /* String types are quoted. Remove them. */
1302 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1303 fs_buf[fs_len - 1] = '\0';
1308 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1309 g_string_truncate(label_s, 0);
1310 for (i = 0; i < string_fmts->len; i++) {
1311 sf = (string_fmt_t *)g_ptr_array_index(string_fmts, i);
1313 g_string_append(label_s, sf->plain);
1315 switch (sf->format) {
1317 g_string_append(label_s, hfinfo->name);
1320 g_string_append(label_s, fs_ptr);
1323 switch(hfinfo->type) {
1325 uvalue = fvalue_get_uinteger(&finfo->value);
1326 tfstring = (const struct true_false_string*) hfinfo->strings;
1327 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1333 DISSECTOR_ASSERT(!hfinfo->bitmask);
1334 svalue = fvalue_get_sinteger(&finfo->value);
1335 if (hfinfo->display & BASE_RANGE_STRING) {
1336 g_string_append(label_s, rval_to_str(svalue, RVALS(hfinfo->strings), "Unknown"));
1337 } else if (hfinfo->display & BASE_EXT_STRING) {
1338 g_string_append(label_s, val_to_str_ext(svalue, (const value_string_ext *) hfinfo->strings, "Unknown"));
1340 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1347 uvalue = fvalue_get_uinteger(&finfo->value);
1348 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1349 g_string_append(label_s, rval_to_str(uvalue, RVALS(hfinfo->strings), "Unknown"));
1350 } else if (hfinfo->display & BASE_EXT_STRING) {
1351 g_string_append(label_s, val_to_str_ext(uvalue, (const value_string_ext *) hfinfo->strings, "Unknown"));
1353 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1365 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1369 if(finfo->value.ftype->val_to_string_repr)
1371 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1376 * This field doesn't have an associated value,
1380 printf(" %u=\"n.a.\"", cmd_line_index);
1385 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1387 pci_t *rs=(pci_t *)prs;
1391 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1398 * Print each occurrence of the field
1400 for (i = 0; i < gp->len; i++) {
1401 print_field_value((field_info *)gp->pdata[i], rs->cmd_line_index);
1407 int g_cmd_line_index = 0;
1410 * field must be persistent - we don't g_strdup() it below
1413 protocolinfo_init(char *field)
1416 header_field_info *hfi;
1417 GString *error_string;
1419 hfi=proto_registrar_get_byname(field);
1421 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1425 switch (hfi->type) {
1427 case FT_ABSOLUTE_TIME:
1428 printf("%u %s %s - ",
1430 ftenum_to_string(hfi),
1431 absolute_time_display_e_to_string((absolute_time_display_e)hfi->display));
1435 printf("%u %s %s - ",
1437 ftenum_to_string(hfi),
1438 base_display_e_to_string((base_display_e)hfi->display));
1442 rs=(pci_t *)g_malloc(sizeof(pci_t));
1443 rs->hf_index=hfi->id;
1445 rs->cmd_line_index = g_cmd_line_index++;
1447 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1449 /* error, we failed to attach to the tap. complain and clean up */
1450 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1452 g_string_free(error_string, TRUE);
1463 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1464 * and fill in string_fmt_parts.
1468 add_string_fmt(string_fmt_e format, gchar *plain) {
1469 string_fmt_t *sf = (string_fmt_t *)g_malloc(sizeof(string_fmt_t));
1471 sf->format = format;
1472 sf->plain = g_strdup(plain);
1474 g_ptr_array_add(string_fmts, sf);
1478 parse_field_string_format(gchar *format) {
1479 GString *plain_s = g_string_new("");
1487 len = strlen(format);
1488 g_ptr_array_set_size(string_fmts, 0);
1491 if (format[pos] == '%') {
1492 if (pos >= len) { /* There should always be a following character */
1496 if (plain_s->len > 0) {
1497 add_string_fmt(SF_NONE, plain_s->str);
1498 g_string_truncate(plain_s, 0);
1500 switch (format[pos]) {
1502 add_string_fmt(SF_NAME, NULL);
1505 add_string_fmt(SF_NUMVAL, NULL);
1508 add_string_fmt(SF_STRVAL, NULL);
1511 g_string_append_c(plain_s, '%');
1513 default: /* Invalid format */
1517 g_string_append_c(plain_s, format[pos]);
1522 if (plain_s->len > 0) {
1523 add_string_fmt(SF_NONE, plain_s->str);
1525 g_string_free(plain_s, TRUE);
1529 /****************************************************************************************
1530 * END OF FIELD EXTRACTION ROUTINES
1531 ****************************************************************************************/
1534 show_print_file_io_error(int err)
1539 cmdarg_err("Not all the packets could be printed because there is "
1540 "no space left on the file system.");
1545 cmdarg_err("Not all the packets could be printed because you are "
1546 "too close to, or over your disk quota.");
1551 cmdarg_err("An error occurred while printing packets: %s.",
1558 * Open/create errors are reported with an console message in Rawshark.
1561 open_failure_message(const char *filename, int err, gboolean for_writing)
1563 fprintf(stderr, "rawshark: ");
1564 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1565 fprintf(stderr, "\n");
1569 raw_cf_open(capture_file *cf, const char *fname)
1571 if ((fd = raw_pipe_open(fname)) < 0)
1574 /* The open succeeded. Fill in the information for this file. */
1576 /* Cleanup all data structures used for dissection. */
1577 cleanup_dissection();
1578 /* Initialize all data structures used for dissection. */
1582 cf->f_datalen = 0; /* not used, but set it anyway */
1584 /* Set the file name because we need it to set the follow stream filter.
1585 XXX - is that still true? We need it for other reasons, though,
1587 cf->filename = g_strdup(fname);
1589 /* Indicate whether it's a permanent or temporary file. */
1590 cf->is_tempfile = FALSE;
1592 /* No user changes yet. */
1593 cf->unsaved_changes = FALSE;
1595 cf->cd_t = WTAP_FILE_UNKNOWN;
1597 cf->drops_known = FALSE;
1599 cf->has_snap = FALSE;
1600 cf->snap = WTAP_MAX_PACKET_SIZE;
1601 nstime_set_zero(&cf->elapsed_time);
1602 nstime_set_unset(&first_ts);
1611 * General errors are reported with an console message in Rawshark.
1614 failure_message(const char *msg_format, va_list ap)
1616 fprintf(stderr, "rawshark: ");
1617 vfprintf(stderr, msg_format, ap);
1618 fprintf(stderr, "\n");
1622 * Read errors are reported with an console message in Rawshark.
1625 read_failure_message(const char *filename, int err)
1627 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1628 filename, g_strerror(err));
1632 * Write errors are reported with an console message in Rawshark.
1635 write_failure_message(const char *filename, int err)
1637 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1638 filename, g_strerror(err));
1642 * Report an error in command-line arguments.
1645 cmdarg_err(const char *fmt, ...)
1650 fprintf(stderr, "rawshark: ");
1651 vfprintf(stderr, fmt, ap);
1652 fprintf(stderr, "\n");
1657 * Report additional information for an error in command-line arguments.
1660 cmdarg_err_cont(const char *fmt, ...)
1665 vfprintf(stderr, fmt, ap);
1666 fprintf(stderr, "\n");
1677 * indent-tabs-mode: nil
1680 * ex: set shiftwidth=4 tabstop=8 expandtab:
1681 * :indentSize=4:tabSize=8:noTabs=true: