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 "disabled_protos.h"
77 #include <epan/prefs.h>
78 #include <epan/column.h>
80 #include <epan/addr_resolv.h>
82 #include "clopts_common.h"
83 #include "cmdarg_err.h"
84 #include "version_info.h"
85 #include <epan/plugins.h>
87 #include "conditions.h"
88 #include "capture_stop_conditions.h"
89 #include "capture_ui_utils.h"
90 #include <epan/epan_dissect.h>
91 #include <epan/stat_cmd_args.h>
92 #include <epan/timestamp.h>
93 #include <wsutil/unicode-utils.h>
94 #include "epan/column-utils.h"
95 #include "epan/proto.h"
98 #include <wiretap/wtap.h>
99 #include <wiretap/libpcap.h>
100 #include <wiretap/pcap-encap.h>
104 #include "capture-pcap-util.h"
106 #include "capture-wpcap.h"
108 #endif /* HAVE_LIBPCAP */
112 #include <wsutil/unicode-utils.h>
116 * This is the template for the decode as option; it is shared between the
117 * various functions that output the usage for this parameter.
119 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
121 static guint32 cum_bytes;
122 static nstime_t first_ts;
123 static frame_data *prev_dis;
124 static frame_data prev_dis_frame;
125 static frame_data *prev_cap;
126 static frame_data prev_cap_frame;
129 * The way the packet decode is to be written.
132 WRITE_TEXT, /* summary or detail text */
133 WRITE_XML /* PDML or PSML */
134 /* Add CSV and the like here */
137 static gboolean line_buffered;
138 static print_format_e print_format = PR_FMT_TEXT;
140 static gboolean want_pcap_pkthdr;
142 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
143 static int load_cap_file(capture_file *cf);
144 static gboolean process_packet(capture_file *cf, gint64 offset,
145 struct wtap_pkthdr *whdr, const guchar *pd);
146 static void show_print_file_io_error(int err);
148 static void open_failure_message(const char *filename, int err,
149 gboolean for_writing);
150 static void failure_message(const char *msg_format, va_list ap);
151 static void read_failure_message(const char *filename, int err);
152 static void write_failure_message(const char *filename, int err);
153 static void protocolinfo_init(char *field);
154 static gboolean parse_field_string_format(char *format);
157 SF_NONE, /* No format (placeholder) */
158 SF_NAME, /* %D Field name / description */
159 SF_NUMVAL, /* %N Numeric value */
160 SF_STRVAL /* %S String value */
163 typedef struct string_fmt_s {
165 string_fmt_e format; /* Valid if plain is NULL */
171 dfilter_t *rfcodes[64];
173 dfilter_t *rfieldfcodes[64];
176 GPtrArray *string_fmts;
179 print_usage(gboolean print_ver)
186 "Rawshark " VERSION "%s\n"
187 "Dump and analyze network traffic.\n"
188 "See http://www.wireshark.org for more information.\n"
191 wireshark_svnversion, get_copyright_info());
195 fprintf(output, "\n");
196 fprintf(output, "Usage: rawshark [options] ...\n");
197 fprintf(output, "\n");
199 fprintf(output, "Input file:\n");
200 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
202 fprintf(output, "\n");
203 fprintf(output, "Processing:\n");
204 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
205 fprintf(output, " packet encapsulation or protocol\n");
206 fprintf(output, " -F <field> field to display\n");
207 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
208 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
209 fprintf(output, " -p use the system's packet header format\n");
210 fprintf(output, " (which may have 64-bit timestamps)\n");
211 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
212 fprintf(output, " -s skip PCAP header on input\n");
214 fprintf(output, "\n");
215 fprintf(output, "Output:\n");
216 fprintf(output, " -l flush output after each packet\n");
217 fprintf(output, " -S format string for fields\n");
218 fprintf(output, " (%%D - name, %%S - stringval, %%N numval)\n");
219 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
221 fprintf(output, "\n");
222 fprintf(output, "Miscellaneous:\n");
223 fprintf(output, " -h display this help and exit\n");
224 fprintf(output, " -o <name>:<value> ... override preference setting\n");
225 fprintf(output, " -v display version info and exit\n");
229 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
230 const gchar *message _U_, gpointer user_data _U_)
235 * Open a pipe for raw input. This is a stripped-down version of
236 * pcap_loop.c:cap_pipe_open_live().
237 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
238 * @param pipe_name The name of the pipe or FIFO.
239 * @return A POSIX file descriptor on success, or -1 on failure.
242 raw_pipe_open(const char *pipe_name)
245 ws_statb64 pipe_stat;
247 char *pncopy, *pos = NULL;
254 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
257 * XXX Rawshark blocks until we return
259 if (strcmp(pipe_name, "-") == 0) {
260 rfd = 0; /* read from stdin */
263 * This is needed to set the stdin pipe into binary mode, otherwise
264 * CR/LF are mangled...
266 _setmode(0, _O_BINARY);
270 if (ws_stat64(pipe_name, &pipe_stat) < 0) {
271 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
272 pipe_name, g_strerror(errno));
275 if (! S_ISFIFO(pipe_stat.st_mode)) {
276 if (S_ISCHR(pipe_stat.st_mode)) {
278 * Assume the user specified an interface on a system where
279 * interfaces are in /dev. Pretend we haven't seen it.
283 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
288 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
290 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
291 pipe_name, g_strerror(errno));
295 #define PIPE_STR "\\pipe\\"
296 /* Under Windows, named pipes _must_ have the form
297 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
299 pncopy = g_strdup(pipe_name);
300 if (strstr(pncopy, "\\\\") == pncopy) {
301 pos = strchr(pncopy + 3, '\\');
302 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
309 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
314 /* Wait for the pipe to appear */
316 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
317 OPEN_EXISTING, 0, NULL);
319 if (hPipe != INVALID_HANDLE_VALUE)
322 err = GetLastError();
323 if (err != ERROR_PIPE_BUSY) {
324 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
325 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
326 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
327 pipe_name, utf_16to8(err_str), err);
332 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
333 err = GetLastError();
334 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS,
335 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
336 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
337 pipe_name, utf_16to8(err_str), err);
343 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
345 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
346 pipe_name, g_strerror(errno));
356 * Parse a link-type argument of the form "encap:<pcap dlt>" or
357 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
358 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
359 * a protocol name, e.g. "http".
362 set_link_type(const char *lt_arg) {
363 char *spec_ptr = strchr(lt_arg, ':');
367 dissector_handle_t dhandle;
375 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
376 dlt_val = linktype_name_to_val(spec_ptr);
379 val = strtol(spec_ptr, &p, 10);
380 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
385 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
386 if (encap == WTAP_ENCAP_UNKNOWN) {
390 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
391 dhandle = find_dissector(spec_ptr);
393 encap = WTAP_ENCAP_USER0;
394 pref_str = g_string_new("uat:user_dlts:");
395 /* This must match the format used in the user_dlts file */
396 g_string_append_printf(pref_str,
397 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
399 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
400 g_string_free(pref_str, TRUE);
403 g_string_free(pref_str, TRUE);
411 show_version(GString *comp_info_str, GString *runtime_info_str)
413 printf("Rawshark " VERSION "%s\n"
420 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
421 runtime_info_str->str);
425 main(int argc, char *argv[])
427 GString *comp_info_str;
428 GString *runtime_info_str;
429 char *init_progfile_dir_error;
431 gboolean arg_error = FALSE;
437 char *gpf_path, *pf_path;
438 char *gdp_path, *dp_path;
439 int gpf_open_errno, gpf_read_errno;
440 int pf_open_errno, pf_read_errno;
441 int gdp_open_errno, gdp_read_errno;
442 int dp_open_errno, dp_read_errno;
444 gchar *pipe_name = NULL;
449 GPtrArray *disp_fields = g_ptr_array_new();
451 gboolean skip_pcap_header = FALSE;
453 #define OPTSTRING_INIT "d:F:hlnN:o:pr:R:sS:t:v"
455 static const char optstring[] = OPTSTRING_INIT;
457 /* Assemble the compile-time version information string */
458 comp_info_str = g_string_new("Compiled ");
459 get_compiled_version_info(comp_info_str, NULL, epan_get_compiled_version_info);
461 /* Assemble the run-time version information string */
462 runtime_info_str = g_string_new("Running ");
463 get_runtime_version_info(runtime_info_str, NULL);
465 /* Add it to the information to be reported on a crash. */
466 ws_add_crash_info("Rawshark " VERSION "%s\n"
471 wireshark_svnversion, comp_info_str->str, runtime_info_str->str);
474 arg_list_utf_16to8(argc, argv);
475 create_app_running_mutex();
479 * Get credential information for later use.
481 init_process_policies();
484 * Clear the filters arrays
486 memset(rfilters, 0, sizeof(rfilters));
487 memset(rfcodes, 0, sizeof(rfcodes));
492 * Initialize our string format
494 string_fmts = g_ptr_array_new();
497 * Attempt to get the pathname of the executable file.
499 init_progfile_dir_error = init_progfile_dir(argv[0], main);
500 if (init_progfile_dir_error != NULL) {
501 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
502 init_progfile_dir_error);
506 * Get credential information for later use.
508 init_process_policies();
510 /* nothing more than the standard GLib handler, but without a warning */
512 G_LOG_LEVEL_WARNING |
513 G_LOG_LEVEL_MESSAGE |
517 g_log_set_handler(NULL,
518 (GLogLevelFlags)log_flags,
519 log_func_ignore, NULL /* user_data */);
520 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
521 (GLogLevelFlags)log_flags,
522 log_func_ignore, NULL /* user_data */);
524 timestamp_set_type(TS_RELATIVE);
525 timestamp_set_precision(TS_PREC_AUTO);
526 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
528 /* Register all dissectors; we must do this before checking for the
529 "-G" flag, as the "-G" flag dumps information registered by the
530 dissectors, and we must do it before we read the preferences, in
531 case any dissectors register preferences. */
532 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
533 failure_message, open_failure_message, read_failure_message,
534 write_failure_message);
536 /* Set the C-language locale to the native environment. */
537 setlocale(LC_ALL, "");
539 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
540 &pf_open_errno, &pf_read_errno, &pf_path);
541 if (gpf_path != NULL) {
542 if (gpf_open_errno != 0) {
543 cmdarg_err("Can't open global preferences file \"%s\": %s.",
544 pf_path, g_strerror(gpf_open_errno));
546 if (gpf_read_errno != 0) {
547 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
548 pf_path, g_strerror(gpf_read_errno));
551 if (pf_path != NULL) {
552 if (pf_open_errno != 0) {
553 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
554 g_strerror(pf_open_errno));
556 if (pf_read_errno != 0) {
557 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
558 pf_path, g_strerror(pf_read_errno));
564 /* Read the disabled protocols file. */
565 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
566 &dp_path, &dp_open_errno, &dp_read_errno);
567 if (gdp_path != NULL) {
568 if (gdp_open_errno != 0) {
569 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
570 gdp_path, g_strerror(gdp_open_errno));
572 if (gdp_read_errno != 0) {
573 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
574 gdp_path, g_strerror(gdp_read_errno));
578 if (dp_path != NULL) {
579 if (dp_open_errno != 0) {
581 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
582 g_strerror(dp_open_errno));
584 if (dp_read_errno != 0) {
586 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
587 g_strerror(dp_read_errno));
593 /* Load Wpcap, if possible */
597 cap_file_init(&cfile);
599 /* Print format defaults to this. */
600 print_format = PR_FMT_TEXT;
602 /* Initialize our encapsulation type */
603 encap = WTAP_ENCAP_UNKNOWN;
605 /* Now get our args */
606 /* XXX - We should probably have an option to dump libpcap link types */
607 while ((opt = getopt(argc, argv, optstring)) != -1) {
609 case 'd': /* Payload type */
610 if (!set_link_type(optarg)) {
611 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
615 case 'F': /* Read field to display */
616 g_ptr_array_add(disp_fields, g_strdup(optarg));
618 case 'h': /* Print help and exit */
622 case 'l': /* "Line-buffer" standard output */
623 /* This isn't line-buffering, strictly speaking, it's just
624 flushing the standard output after the information for
625 each packet is printed; however, that should be good
626 enough for all the purposes to which "-l" is put (and
627 is probably actually better for "-V", as it does fewer
630 See the comment in "process_packet()" for an explanation of
631 why we do that, and why we don't just use "setvbuf()" to
632 make the standard output line-buffered (short version: in
633 Windows, "line-buffered" is the same as "fully-buffered",
634 and the output buffer is only flushed when it fills up). */
635 line_buffered = TRUE;
637 case 'n': /* No name resolution */
638 gbl_resolv_flags.mac_name = FALSE;
639 gbl_resolv_flags.network_name = FALSE;
640 gbl_resolv_flags.transport_name = FALSE;
641 gbl_resolv_flags.concurrent_dns = FALSE;
643 case 'N': /* Select what types of addresses/port #s to resolve */
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);
706 else if (strcmp(optarg, "u") == 0)
707 timestamp_set_type(TS_UTC);
708 else if (strcmp(optarg, "ud") == 0)
709 timestamp_set_type(TS_UTC_WITH_DATE);
711 cmdarg_err("Invalid time stamp type \"%s\"",
713 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
714 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
718 case 'v': /* Show version and exit */
720 show_version(comp_info_str, runtime_info_str);
721 g_string_free(comp_info_str, TRUE);
722 g_string_free(runtime_info_str, TRUE);
727 case '?': /* Bad flag - print usage message */
734 /* Notify all registered modules that have had any of their preferences
735 changed either from one of the preferences file or from the command
736 line that their preferences have changed.
737 Initialize preferences before display filters, otherwise modules
738 like MATE won't work. */
741 /* Initialize our display fields */
742 for (fc = 0; fc < disp_fields->len; fc++) {
743 protocolinfo_init((char *)g_ptr_array_index(disp_fields, fc));
745 g_ptr_array_free(disp_fields, TRUE);
749 /* If no capture filter or read filter has been specified, and there are
750 still command-line arguments, treat them as the tokens of a capture
751 filter (if no "-r" flag was specified) or a read filter (if a "-r"
752 flag was specified. */
754 if (pipe_name != NULL) {
755 if (n_rfilters != 0) {
756 cmdarg_err("Read filters were specified both with \"-R\" "
757 "and with additional command-line arguments");
760 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
764 /* Make sure we got a dissector handle for our payload. */
765 if (encap == WTAP_ENCAP_UNKNOWN) {
766 cmdarg_err("No valid payload dissector specified.");
777 /* Start windows sockets */
778 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
781 /* At this point MATE will have registered its field array so we can
782 have a tap filter with one of MATE's late-registered fields as part
783 of the filter. We can now process all the "-z" arguments. */
784 start_requested_stats();
786 /* disabled protocols as per configuration file */
787 if (gdp_path == NULL && dp_path == NULL) {
788 set_disabled_protos_list();
791 /* Build the column format array */
792 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
794 if (n_rfilters != 0) {
795 for (i = 0; i < n_rfilters; i++) {
796 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
797 cmdarg_err("%s", dfilter_error_msg);
807 * We're reading a pipe (or capture file).
811 * Immediately relinquish any special privileges we have; we must not
812 * be allowed to read any capture files the user running Rawshark
815 relinquish_special_privs_perm();
817 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
822 /* Do we need to PCAP header and magic? */
823 if (skip_pcap_header) {
824 size_t bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
825 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
826 while (bytes_left != 0) {
827 ssize_t bytes = read(fd, buf, (int)bytes_left);
829 cmdarg_err("Not enough bytes for pcap header.");
836 /* Set timestamp precision; there should arguably be a command-line
837 option to let the user set this. */
839 switch(wtap_file_tsprecision(cfile.wth)) {
840 case(WTAP_FILE_TSPREC_SEC):
841 timestamp_set_precision(TS_PREC_AUTO_SEC);
843 case(WTAP_FILE_TSPREC_DSEC):
844 timestamp_set_precision(TS_PREC_AUTO_DSEC);
846 case(WTAP_FILE_TSPREC_CSEC):
847 timestamp_set_precision(TS_PREC_AUTO_CSEC);
849 case(WTAP_FILE_TSPREC_MSEC):
850 timestamp_set_precision(TS_PREC_AUTO_MSEC);
852 case(WTAP_FILE_TSPREC_USEC):
853 timestamp_set_precision(TS_PREC_AUTO_USEC);
855 case(WTAP_FILE_TSPREC_NSEC):
856 timestamp_set_precision(TS_PREC_AUTO_NSEC);
859 g_assert_not_reached();
862 timestamp_set_precision(TS_PREC_AUTO_USEC);
865 /* Process the packets in the file */
866 err = load_cap_file(&cfile);
873 /* If you want to capture live packets, use TShark. */
874 cmdarg_err("Input file or pipe name not specified.");
884 * Read data from a raw pipe. The "raw" data consists of a libpcap
885 * packet header followed by the payload.
886 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
887 * of thing you want to use in Windows.
888 * @param phdr [OUT] Packet header information.
889 * @param err [OUT] Error indicator. Uses wiretap values.
890 * @param err_info [OUT] Error message.
891 * @param data_offset [OUT] data offset in the pipe.
892 * @return TRUE on success, FALSE on failure.
895 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, const gchar **err_info, gint64 *data_offset) {
896 struct pcap_pkthdr mem_hdr;
897 struct pcaprec_hdr disk_hdr;
898 ssize_t bytes_read = 0;
899 size_t bytes_needed = sizeof(disk_hdr);
900 guchar *ptr = (guchar*) &disk_hdr;
901 static gchar err_str[100];
903 if (want_pcap_pkthdr) {
904 bytes_needed = sizeof(mem_hdr);
905 ptr = (guchar*) &mem_hdr;
908 /* Copied from capture_loop.c */
909 while (bytes_needed > 0) {
910 bytes_read = read(fd, ptr, (int)bytes_needed);
911 if (bytes_read == 0) {
914 } else if (bytes_read < 0) {
915 *err = WTAP_ERR_CANT_READ;
916 *err_info = "Error reading header from pipe";
919 bytes_needed -= bytes_read;
920 *data_offset += bytes_read;
924 if (want_pcap_pkthdr) {
925 phdr->ts.secs = mem_hdr.ts.tv_sec;
926 phdr->ts.nsecs = mem_hdr.ts.tv_usec * 1000;
927 phdr->caplen = mem_hdr.caplen;
928 phdr->len = mem_hdr.len;
930 phdr->ts.secs = disk_hdr.ts_sec;
931 phdr->ts.nsecs = disk_hdr.ts_usec * 1000;
932 phdr->caplen = disk_hdr.incl_len;
933 phdr->len = disk_hdr.orig_len;
935 bytes_needed = phdr->caplen;
937 phdr->pkt_encap = encap;
940 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
941 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
942 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
943 printf("len: %d (%04x)\n", hdr.len, hdr.len);
945 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
946 *err = WTAP_ERR_BAD_FILE;
947 g_snprintf(err_str, 100, "Bad packet length: %lu\n",
948 (unsigned long) bytes_needed);
954 while (bytes_needed > 0) {
955 bytes_read = read(fd, ptr, (int)bytes_needed);
956 if (bytes_read == 0) {
957 *err = WTAP_ERR_SHORT_READ;
958 *err_info = "Got zero bytes reading data from pipe";
960 } else if (bytes_read < 0) {
961 *err = WTAP_ERR_CANT_READ;
962 *err_info = "Error reading data from pipe";
965 bytes_needed -= bytes_read;
966 *data_offset += bytes_read;
973 load_cap_file(capture_file *cf)
976 const gchar *err_info;
977 gint64 data_offset = 0;
978 struct wtap_pkthdr phdr;
979 guchar pd[WTAP_MAX_PACKET_SIZE];
981 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
982 process_packet(cf, data_offset, &phdr, pd);
986 /* Print a message noting that the read failed somewhere along the line. */
989 case WTAP_ERR_UNSUPPORTED_ENCAP:
990 cmdarg_err("The file \"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
991 cf->filename, err_info);
994 case WTAP_ERR_CANT_READ:
995 cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
999 case WTAP_ERR_SHORT_READ:
1000 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
1004 case WTAP_ERR_BAD_FILE:
1005 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
1006 cf->filename, err_info);
1009 case WTAP_ERR_DECOMPRESS:
1010 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n(%s)",
1011 cf->filename, err_info);
1015 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
1016 cf->filename, wtap_strerror(err));
1025 process_packet(capture_file *cf, gint64 offset, struct wtap_pkthdr *whdr,
1029 gboolean create_proto_tree;
1036 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1037 packets to process. We spit out a line with the timestamp and the text "void"
1039 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1040 (unsigned long int)whdr->ts.secs,
1041 (unsigned long int)whdr->ts.nsecs);
1048 /* Count this packet. */
1051 /* If we're going to print packet information, or we're going to
1052 run a read filter, or we're going to process taps, set up to
1053 do a dissection and do so. */
1054 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1057 create_proto_tree = TRUE;
1059 /* The protocol tree will be "visible", i.e., printed, only if we're
1060 printing packet details, which is true if we're in verbose mode ("verbose"
1062 epan_dissect_init(&edt, create_proto_tree, FALSE);
1064 /* If we're running a read filter, prime the epan_dissect_t with that
1066 if (n_rfilters > 0) {
1067 for(i = 0; i < n_rfcodes; i++) {
1068 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1072 printf("%lu", (unsigned long int) cf->count);
1074 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1075 &first_ts, prev_dis, prev_cap);
1077 /* We only need the columns if we're printing packet info but we're
1078 *not* verbose; in verbose mode, we print the protocol tree, not
1079 the protocol summary. */
1080 epan_dissect_run_with_taps(&edt, whdr, pd, &fdata, &cf->cinfo);
1082 frame_data_set_after_dissect(&fdata, &cum_bytes);
1083 prev_dis_frame = fdata;
1084 prev_dis = &prev_dis_frame;
1086 prev_cap_frame = fdata;
1087 prev_cap = &prev_cap_frame;
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_destroy(&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"));
1336 } else if (hfinfo->display & BASE_EXT_STRING) {
1337 g_string_append(label_s, val_to_str_ext(svalue, (const value_string_ext *) hfinfo->strings, "Unknown"));
1339 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1346 uvalue = fvalue_get_uinteger(&finfo->value);
1347 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1348 g_string_append(label_s, rval_to_str(uvalue, RVALS(hfinfo->strings), "Unknown"));
1349 } else if (hfinfo->display & BASE_EXT_STRING) {
1350 g_string_append(label_s, val_to_str_ext(uvalue, (const value_string_ext *) hfinfo->strings, "Unknown"));
1352 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1364 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1368 if(finfo->value.ftype->val_to_string_repr)
1370 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1375 * This field doesn't have an associated value,
1379 printf(" %u=\"n.a.\"", cmd_line_index);
1384 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1386 pci_t *rs=(pci_t *)prs;
1390 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1397 * Print each occurrence of the field
1399 for (i = 0; i < gp->len; i++) {
1400 print_field_value((field_info *)gp->pdata[i], rs->cmd_line_index);
1406 int g_cmd_line_index = 0;
1409 * field must be persistent - we don't g_strdup() it below
1412 protocolinfo_init(char *field)
1415 header_field_info *hfi;
1416 GString *error_string;
1418 hfi=proto_registrar_get_byname(field);
1420 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1424 switch (hfi->type) {
1426 case FT_ABSOLUTE_TIME:
1427 printf("%u %s %s - ",
1429 ftenum_to_string(hfi),
1430 absolute_time_display_e_to_string((absolute_time_display_e)hfi->display));
1434 printf("%u %s %s - ",
1436 ftenum_to_string(hfi),
1437 base_display_e_to_string((base_display_e)hfi->display));
1441 rs=(pci_t *)g_malloc(sizeof(pci_t));
1442 rs->hf_index=hfi->id;
1444 rs->cmd_line_index = g_cmd_line_index++;
1446 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1448 /* error, we failed to attach to the tap. complain and clean up */
1449 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1451 g_string_free(error_string, TRUE);
1462 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1463 * and fill in string_fmt_parts.
1467 add_string_fmt(string_fmt_e format, gchar *plain) {
1468 string_fmt_t *sf = (string_fmt_t *)g_malloc(sizeof(string_fmt_t));
1470 sf->format = format;
1471 sf->plain = g_strdup(plain);
1473 g_ptr_array_add(string_fmts, sf);
1477 parse_field_string_format(gchar *format) {
1478 GString *plain_s = g_string_new("");
1486 len = strlen(format);
1487 g_ptr_array_set_size(string_fmts, 0);
1490 if (format[pos] == '%') {
1491 if (pos >= len) { /* There should always be a following character */
1495 if (plain_s->len > 0) {
1496 add_string_fmt(SF_NONE, plain_s->str);
1497 g_string_truncate(plain_s, 0);
1499 switch (format[pos]) {
1501 add_string_fmt(SF_NAME, NULL);
1504 add_string_fmt(SF_NUMVAL, NULL);
1507 add_string_fmt(SF_STRVAL, NULL);
1510 g_string_append_c(plain_s, '%');
1512 default: /* Invalid format */
1516 g_string_append_c(plain_s, format[pos]);
1521 if (plain_s->len > 0) {
1522 add_string_fmt(SF_NONE, plain_s->str);
1524 g_string_free(plain_s, TRUE);
1528 /****************************************************************************************
1529 * END OF FIELD EXTRACTION ROUTINES
1530 ****************************************************************************************/
1533 show_print_file_io_error(int err)
1538 cmdarg_err("Not all the packets could be printed because there is "
1539 "no space left on the file system.");
1544 cmdarg_err("Not all the packets could be printed because you are "
1545 "too close to, or over your disk quota.");
1550 cmdarg_err("An error occurred while printing packets: %s.",
1557 * Open/create errors are reported with an console message in Rawshark.
1560 open_failure_message(const char *filename, int err, gboolean for_writing)
1562 fprintf(stderr, "rawshark: ");
1563 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1564 fprintf(stderr, "\n");
1568 raw_cf_open(capture_file *cf, const char *fname)
1570 if ((fd = raw_pipe_open(fname)) < 0)
1573 /* The open succeeded. Fill in the information for this file. */
1575 /* Cleanup all data structures used for dissection. */
1576 cleanup_dissection();
1577 /* Initialize all data structures used for dissection. */
1581 cf->f_datalen = 0; /* not used, but set it anyway */
1583 /* Set the file name because we need it to set the follow stream filter.
1584 XXX - is that still true? We need it for other reasons, though,
1586 cf->filename = g_strdup(fname);
1588 /* Indicate whether it's a permanent or temporary file. */
1589 cf->is_tempfile = FALSE;
1591 /* No user changes yet. */
1592 cf->unsaved_changes = FALSE;
1594 cf->cd_t = WTAP_FILE_UNKNOWN;
1596 cf->drops_known = FALSE;
1598 cf->has_snap = FALSE;
1599 cf->snap = WTAP_MAX_PACKET_SIZE;
1600 nstime_set_zero(&cf->elapsed_time);
1601 nstime_set_unset(&first_ts);
1610 * General errors are reported with an console message in Rawshark.
1613 failure_message(const char *msg_format, va_list ap)
1615 fprintf(stderr, "rawshark: ");
1616 vfprintf(stderr, msg_format, ap);
1617 fprintf(stderr, "\n");
1621 * Read errors are reported with an console message in Rawshark.
1624 read_failure_message(const char *filename, int err)
1626 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1627 filename, g_strerror(err));
1631 * Write errors are reported with an console message in Rawshark.
1634 write_failure_message(const char *filename, int err)
1636 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1637 filename, g_strerror(err));
1641 * Report an error in command-line arguments.
1644 cmdarg_err(const char *fmt, ...)
1649 fprintf(stderr, "rawshark: ");
1650 vfprintf(stderr, fmt, ap);
1651 fprintf(stderr, "\n");
1656 * Report additional information for an error in command-line arguments.
1659 cmdarg_err_cont(const char *fmt, ...)
1664 vfprintf(stderr, fmt, ap);
1665 fprintf(stderr, "\n");
1676 * indent-tabs-mode: nil
1679 * ex: set shiftwidth=4 tabstop=8 expandtab:
1680 * :indentSize=4:tabSize=8:noTabs=true: