5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
9 * Rawshark - Raw field extractor by Gerald Combs <gerald@wireshark.org>
10 * and Loris Degioanni <loris.degioanni@cacetech.com>
11 * Based on TShark, by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 * Rawshark does the following:
31 * - Opens a specified file or named pipe
32 * - Applies a specfied DLT or "decode as" encapsulation
33 * - Reads frames prepended with a libpcap packet header.
34 * - Prints a status line, followed by fields from a specified list.
60 #ifdef HAVE_SYS_STAT_H
61 # include <sys/stat.h>
64 #ifdef NEED_STRERROR_H
73 #include <epan/epan.h>
74 #include <epan/filesystem.h>
75 #include <wsutil/privileges.h>
76 #include <wsutil/file_util.h>
79 #include <epan/packet.h>
81 #include "disabled_protos.h"
82 #include <epan/prefs.h>
83 #include <epan/column.h>
85 #include <epan/addr_resolv.h>
87 #include "clopts_common.h"
88 #include "cmdarg_err.h"
89 #include "version_info.h"
90 #include <epan/plugins.h>
92 #include "conditions.h"
93 #include "capture_stop_conditions.h"
94 #include "capture_ui_utils.h"
95 #include <epan/epan_dissect.h>
96 #include <epan/stat_cmd_args.h>
97 #include <epan/timestamp.h>
98 #include <wsutil/unicode-utils.h>
99 #include "epan/column-utils.h"
100 #include "epan/proto.h"
101 #include <epan/tap.h>
109 #include "capture-pcap-util.h"
112 #include "capture-wpcap.h"
113 #include "capture_errs.h"
115 #endif /* HAVE_LIBPCAP */
119 * This is the template for the decode as option; it is shared between the
120 * various functions that output the usage for this parameter.
122 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
124 static guint32 cum_bytes;
125 static nstime_t first_ts;
126 static nstime_t prev_dis_ts;
127 static nstime_t prev_cap_ts;
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;
142 * Standard secondary message for unexpected errors.
144 static const char please_report[] =
145 "Please report this to the Wireshark developers";
147 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
148 static int load_cap_file(capture_file *cf);
149 static gboolean process_packet(capture_file *cf, gint64 offset,
150 const struct wtap_pkthdr *whdr, const guchar *pd);
151 static void show_print_file_io_error(int err);
153 static void open_failure_message(const char *filename, int err,
154 gboolean for_writing);
155 static void failure_message(const char *msg_format, va_list ap);
156 static void read_failure_message(const char *filename, int err);
157 static void write_failure_message(const char *filename, int err);
158 static void protocolinfo_init(char *field);
159 static gboolean parse_field_string_format(char *format);
162 SF_NONE, /* No format (placeholder) */
163 SF_NAME, /* %D Field name / description */
164 SF_NUMVAL, /* %N Numeric value */
165 SF_STRVAL /* %S String value */
168 typedef struct string_fmt_s {
170 string_fmt_e format; /* Valid if plain is NULL */
176 dfilter_t *rfcodes[64];
178 dfilter_t *rfieldfcodes[64];
181 GPtrArray *string_fmts;
184 print_usage(gboolean print_ver)
191 "Rawshark " VERSION "%s\n"
192 "Dump and analyze network traffic.\n"
193 "See http://www.wireshark.org for more information.\n"
196 wireshark_svnversion, get_copyright_info());
200 fprintf(output, "\n");
201 fprintf(output, "Usage: rawshark [options] ...\n");
202 fprintf(output, "\n");
204 fprintf(output, "Input file:\n");
205 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
207 fprintf(output, "\n");
208 fprintf(output, "Processing:\n");
209 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
210 fprintf(output, " -F <field> field to display\n");
211 fprintf(output, " -s skip PCAP header on input\n");
212 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
213 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
214 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
215 fprintf(output, " packet encapsulation or protocol\n");
217 /*fprintf(output, "\n");*/
218 fprintf(output, "Output:\n");
219 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval)\n");
220 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
221 fprintf(output, " -l flush output after each packet\n");
223 fprintf(output, "\n");
224 fprintf(output, "Miscellaneous:\n");
225 fprintf(output, " -h display this help and exit\n");
226 fprintf(output, " -v display version info and exit\n");
227 fprintf(output, " -o <name>:<value> ... override preference setting\n");
231 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
232 const gchar *message _U_, gpointer user_data _U_)
237 * Open a pipe for raw input. This is a stripped-down version of
238 * pcap_loop.c:cap_pipe_open_live().
239 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
240 * @param pipe_name The name of the pipe or FIFO.
241 * @return A POSIX file descriptor on success, or -1 on failure.
244 raw_pipe_open(const char *pipe_name)
247 struct stat pipe_stat;
256 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
259 * XXX Rawshark blocks until we return
261 if (strcmp(pipe_name, "-") == 0) {
262 rfd = 0; /* read from stdin */
265 * This is needed to set the stdin pipe into binary mode, otherwise
266 * CR/LF are mangled...
268 _setmode(0, _O_BINARY);
272 if (ws_stat(pipe_name, &pipe_stat) < 0) {
273 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
274 pipe_name, strerror(errno));
277 if (! S_ISFIFO(pipe_stat.st_mode)) {
278 if (S_ISCHR(pipe_stat.st_mode)) {
280 * Assume the user specified an interface on a system where
281 * interfaces are in /dev. Pretend we haven't seen it.
285 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
290 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
292 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
293 pipe_name, strerror(errno));
297 #define PIPE_STR "\\pipe\\"
298 /* Under Windows, named pipes _must_ have the form
299 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
301 pncopy = g_strdup(pipe_name);
302 if (strstr(pncopy, "\\\\") == pncopy) {
303 pos = strchr(pncopy + 3, '\\');
304 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
311 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
316 /* Wait for the pipe to appear */
318 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
319 OPEN_EXISTING, 0, NULL);
321 if (hPipe != INVALID_HANDLE_VALUE)
324 err = GetLastError();
325 if (err != ERROR_PIPE_BUSY) {
326 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
327 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
328 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
329 pipe_name, utf_16to8(err_str), err);
334 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
335 err = GetLastError();
336 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
337 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
338 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
339 pipe_name, utf_16to8(err_str), err);
345 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
347 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
348 pipe_name, strerror(errno));
358 * Parse a link-type argument of the form "encap:<pcap dlt>" or
359 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
360 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
361 * a protocol name, e.g. "http".
364 set_link_type(const char *lt_arg) {
365 char *spec_ptr = strchr(lt_arg, ':');
369 dissector_handle_t dhandle;
377 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
378 dlt_val = linktype_name_to_val(spec_ptr);
381 val = strtol(spec_ptr, &p, 10);
382 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
387 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
388 if (encap == WTAP_ENCAP_UNKNOWN) {
392 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
393 dhandle = find_dissector(spec_ptr);
395 encap = WTAP_ENCAP_USER0;
396 pref_str = g_string_new("uat:user_dlts:");
397 /* This must match the format used in the user_dlts file */
398 g_string_append_printf(pref_str,
399 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
401 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
402 g_string_free(pref_str, TRUE);
405 g_string_free(pref_str, TRUE);
413 show_version(GString *comp_info_str, GString *runtime_info_str)
415 printf("Rawshark " VERSION "%s\n"
422 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
423 runtime_info_str->str);
427 main(int argc, char *argv[])
429 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;
449 GLogLevelFlags log_flags;
450 GPtrArray *disp_fields = g_ptr_array_new();
452 gboolean skip_pcap_header = FALSE;
454 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:sS:t:v"
456 static const char optstring[] = OPTSTRING_INIT;
459 * Get credential information for later use.
461 get_credential_info();
464 * Clear the filters arrays
466 memset(rfilters, 0, sizeof(rfilters));
467 memset(rfcodes, 0, sizeof(rfcodes));
472 * Initialize our string format
474 string_fmts = g_ptr_array_new();
477 * Attempt to get the pathname of the executable file.
479 init_progfile_dir_error = init_progfile_dir(argv[0], main);
480 if (init_progfile_dir_error != NULL) {
481 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
482 init_progfile_dir_error);
486 * Get credential information for later use.
488 get_credential_info();
490 /* nothing more than the standard GLib handler, but without a warning */
492 G_LOG_LEVEL_WARNING |
493 G_LOG_LEVEL_MESSAGE |
497 g_log_set_handler(NULL,
499 log_func_ignore, NULL /* user_data */);
500 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
502 log_func_ignore, NULL /* user_data */);
504 timestamp_set_type(TS_RELATIVE);
505 timestamp_set_precision(TS_PREC_AUTO);
507 /* Register all dissectors; we must do this before checking for the
508 "-G" flag, as the "-G" flag dumps information registered by the
509 dissectors, and we must do it before we read the preferences, in
510 case any dissectors register preferences. */
511 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
512 failure_message, open_failure_message, read_failure_message,
513 write_failure_message);
515 /* Now register the preferences for any non-dissector modules.
516 We must do that before we read the preferences as well. */
517 prefs_register_modules();
519 /* Set the C-language locale to the native environment. */
520 setlocale(LC_ALL, "");
522 prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
523 &pf_open_errno, &pf_read_errno, &pf_path);
524 if (gpf_path != NULL) {
525 if (gpf_open_errno != 0) {
526 cmdarg_err("Can't open global preferences file \"%s\": %s.",
527 pf_path, strerror(gpf_open_errno));
529 if (gpf_read_errno != 0) {
530 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
531 pf_path, strerror(gpf_read_errno));
534 if (pf_path != NULL) {
535 if (pf_open_errno != 0) {
536 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
537 strerror(pf_open_errno));
539 if (pf_read_errno != 0) {
540 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
541 pf_path, strerror(pf_read_errno));
547 /* Set the name resolution code's flags from the preferences. */
548 g_resolv_flags = prefs->name_resolve;
550 /* Read the disabled protocols file. */
551 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
552 &dp_path, &dp_open_errno, &dp_read_errno);
553 if (gdp_path != NULL) {
554 if (gdp_open_errno != 0) {
555 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
556 gdp_path, strerror(gdp_open_errno));
558 if (gdp_read_errno != 0) {
559 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
560 gdp_path, strerror(gdp_read_errno));
564 if (dp_path != NULL) {
565 if (dp_open_errno != 0) {
567 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
568 strerror(dp_open_errno));
570 if (dp_read_errno != 0) {
572 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
573 strerror(dp_read_errno));
579 /* Load Wpcap, if possible */
583 init_cap_file(&cfile);
585 /* Print format defaults to this. */
586 print_format = PR_FMT_TEXT;
588 /* Initialize our encapsulation type */
589 encap = WTAP_ENCAP_UNKNOWN;
591 /* Now get our args */
592 /* XXX - We should probably have an option to dump libpcap link types */
593 while ((opt = getopt(argc, argv, optstring)) != -1) {
595 case 'd': /* Payload type */
596 if (!set_link_type(optarg)) {
597 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
601 case 'F': /* Read field to display */
602 g_ptr_array_add(disp_fields, g_strdup(optarg));
604 case 'h': /* Print help and exit */
608 case 'l': /* "Line-buffer" standard output */
609 /* This isn't line-buffering, strictly speaking, it's just
610 flushing the standard output after the information for
611 each packet is printed; however, that should be good
612 enough for all the purposes to which "-l" is put (and
613 is probably actually better for "-V", as it does fewer
616 See the comment in "process_packet()" for an explanation of
617 why we do that, and why we don't just use "setvbuf()" to
618 make the standard output line-buffered (short version: in
619 Windows, "line-buffered" is the same as "fully-buffered",
620 and the output buffer is only flushed when it fills up). */
621 line_buffered = TRUE;
623 case 'n': /* No name resolution */
624 g_resolv_flags = RESOLV_NONE;
626 case 'N': /* Select what types of addresses/port #s to resolve */
627 if (g_resolv_flags == RESOLV_ALL)
628 g_resolv_flags = RESOLV_NONE;
629 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
630 if (badopt != '\0') {
631 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
636 case 'o': /* Override preference from command line */
637 switch (prefs_set_pref(optarg)) {
642 case PREFS_SET_SYNTAX_ERR:
643 cmdarg_err("Invalid -o flag \"%s\"", optarg);
647 case PREFS_SET_NO_SUCH_PREF:
648 case PREFS_SET_OBSOLETE:
649 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
654 case 'r': /* Read capture file xxx */
655 pipe_name = g_strdup(optarg);
657 case 'R': /* Read file filter */
658 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
659 rfilters[n_rfilters++] = optarg;
662 cmdarg_err("Too many display filters");
666 case 's': /* Skip PCAP header */
667 skip_pcap_header = TRUE;
669 case 'S': /* Print string representations */
670 if (!parse_field_string_format(optarg)) {
671 cmdarg_err("Invalid field string format");
675 case 't': /* Time stamp type */
676 if (strcmp(optarg, "r") == 0)
677 timestamp_set_type(TS_RELATIVE);
678 else if (strcmp(optarg, "a") == 0)
679 timestamp_set_type(TS_ABSOLUTE);
680 else if (strcmp(optarg, "ad") == 0)
681 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
682 else if (strcmp(optarg, "d") == 0)
683 timestamp_set_type(TS_DELTA);
684 else if (strcmp(optarg, "dd") == 0)
685 timestamp_set_type(TS_DELTA_DIS);
686 else if (strcmp(optarg, "e") == 0)
687 timestamp_set_type(TS_EPOCH);
689 cmdarg_err("Invalid time stamp type \"%s\"",
691 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
692 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
696 case 'v': /* Show version and exit */
698 GString *comp_info_str;
699 GString *runtime_info_str;
700 /* Assemble the compile-time version information string */
701 comp_info_str = g_string_new("Compiled ");
702 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
704 /* Assemble the run-time version information string */
705 runtime_info_str = g_string_new("Running ");
706 get_runtime_version_info(runtime_info_str, NULL);
707 show_version(comp_info_str, runtime_info_str);
708 g_string_free(comp_info_str, TRUE);
709 g_string_free(runtime_info_str, TRUE);
714 case '?': /* Bad flag - print usage message */
721 /* Notify all registered modules that have had any of their preferences
722 changed either from one of the preferences file or from the command
723 line that their preferences have changed.
724 Initialize preferences before display filters, otherwise modules
725 like MATE won't work. */
728 /* Initialize our display fields */
729 for (fc = 0; fc < disp_fields->len; fc++) {
730 protocolinfo_init(g_ptr_array_index(disp_fields, fc));
732 g_ptr_array_free(disp_fields, TRUE);
736 /* If no capture filter or read filter has been specified, and there are
737 still command-line arguments, treat them as the tokens of a capture
738 filter (if no "-r" flag was specified) or a read filter (if a "-r"
739 flag was specified. */
741 if (pipe_name != NULL) {
742 if (n_rfilters != 0) {
743 cmdarg_err("Read filters were specified both with \"-R\" "
744 "and with additional command-line arguments");
747 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
751 /* Make sure we got a dissector handle for our payload. */
752 if (encap == WTAP_ENCAP_UNKNOWN) {
753 cmdarg_err("No valid payload dissector specified.");
764 /* Start windows sockets */
765 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
768 /* At this point MATE will have registered its field array so we can
769 have a tap filter with one of MATE's late-registered fields as part
770 of the filter. We can now process all the "-z" arguments. */
771 start_requested_stats();
773 /* disabled protocols as per configuration file */
774 if (gdp_path == NULL && dp_path == NULL) {
775 set_disabled_protos_list();
778 /* Build the column format array */
779 build_column_format_array(&cfile.cinfo, prefs->num_cols, TRUE);
781 if (n_rfilters != 0) {
782 for (i = 0; i < n_rfilters; i++) {
783 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
784 cmdarg_err("%s", dfilter_error_msg);
794 * We're reading a pipe (or capture file).
798 * Immediately relinquish any special privileges we have; we must not
799 * be allowed to read any capture files the user running Rawshark
802 relinquish_special_privs_perm();
804 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
809 /* Do we need to PCAP header and magic? */
810 if (skip_pcap_header) {
811 guint bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
812 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
813 while (bytes_left > 0) {
814 guint bytes = read(fd, buf, bytes_left);
816 cmdarg_err("Not enough bytes for pcap header.");
823 /* Set timestamp precision; there should arguably be a command-line
824 option to let the user set this. */
826 switch(wtap_file_tsprecision(cfile.wth)) {
827 case(WTAP_FILE_TSPREC_SEC):
828 timestamp_set_precision(TS_PREC_AUTO_SEC);
830 case(WTAP_FILE_TSPREC_DSEC):
831 timestamp_set_precision(TS_PREC_AUTO_DSEC);
833 case(WTAP_FILE_TSPREC_CSEC):
834 timestamp_set_precision(TS_PREC_AUTO_CSEC);
836 case(WTAP_FILE_TSPREC_MSEC):
837 timestamp_set_precision(TS_PREC_AUTO_MSEC);
839 case(WTAP_FILE_TSPREC_USEC):
840 timestamp_set_precision(TS_PREC_AUTO_USEC);
842 case(WTAP_FILE_TSPREC_NSEC):
843 timestamp_set_precision(TS_PREC_AUTO_NSEC);
846 g_assert_not_reached();
849 timestamp_set_precision(TS_PREC_AUTO_USEC);
852 /* Process the packets in the file */
853 err = load_cap_file(&cfile);
860 /* If you want to capture live packets, use TShark. */
861 cmdarg_err("Input file or pipe name not specified.");
871 * Read data from a raw pipe. The "raw" data consists of a libpcap
872 * packet header followed by the payload.
873 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
874 * of thing you want to use in Windows.
875 * @param phdr [OUT] Packet header information.
876 * @param err [OUT] Error indicator. Uses wiretap values.
877 * @param err_info [OUT] Error message.
878 * @param data_offset [OUT] data offset in the pipe.
879 * @return TRUE on success, FALSE on failure.
882 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, gchar **err_info, gint64 *data_offset) {
883 struct pcaprec_hdr hdr;
885 int bytes_needed = sizeof(struct pcaprec_hdr);
886 guchar *ptr = (guchar*)&hdr;
887 static gchar err_str[100];
889 /* Copied from capture_loop.c */
890 while (bytes_needed > 0) {
891 bytes_read = read(fd, ptr, bytes_needed);
892 if (bytes_read == 0) {
895 } else if (bytes_read < 0) {
896 *err = WTAP_ERR_CANT_READ;
897 *err_info = "Error reading header from pipe";
900 bytes_needed -= bytes_read;
901 *data_offset += bytes_read;
906 phdr->ts.secs = hdr.ts_sec;
907 phdr->ts.nsecs = hdr.ts_usec * 1000;
908 phdr->caplen = bytes_needed = hdr.incl_len;
909 phdr->len = hdr.orig_len;
910 phdr->pkt_encap = encap;
913 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
914 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
915 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
916 printf("len: %d (%04x)\n", hdr.len, hdr.len);
918 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
919 *err = WTAP_ERR_BAD_RECORD;
920 g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
926 while (bytes_needed > 0) {
927 bytes_read = read(fd, ptr, bytes_needed);
928 if (bytes_read == 0) {
929 *err = WTAP_ERR_SHORT_READ;
930 *err_info = "Got zero bytes reading data from pipe";
932 } else if (bytes_read < 0) {
933 *err = WTAP_ERR_CANT_READ;
934 *err_info = "Error reading data from pipe";
937 bytes_needed -= bytes_read;
938 *data_offset += bytes_read;
945 load_cap_file(capture_file *cf)
949 gint64 data_offset = 0;
950 struct wtap_pkthdr phdr;
951 guchar pd[WTAP_MAX_PACKET_SIZE];
953 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
954 process_packet(cf, data_offset, &phdr, pd);
958 /* Print a message noting that the read failed somewhere along the line. */
961 case WTAP_ERR_UNSUPPORTED_ENCAP:
962 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
963 cf->filename, err_info);
966 case WTAP_ERR_CANT_READ:
967 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
971 case WTAP_ERR_SHORT_READ:
972 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
976 case WTAP_ERR_BAD_RECORD:
977 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
978 cf->filename, err_info);
982 cmdarg_err("An error occurred while reading \"%s\": %s.",
983 cf->filename, wtap_strerror(err));
992 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
996 gboolean create_proto_tree;
999 union wtap_pseudo_header pseudo_header;
1004 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1005 packets to process. We spit out a line with the timestamp and the text "void"
1007 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1008 (unsigned long int)whdr->ts.secs,
1009 (unsigned long int)whdr->ts.nsecs);
1016 memset(&pseudo_header, 0, sizeof(pseudo_header));
1018 /* Count this packet. */
1021 /* If we're going to print packet information, or we're going to
1022 run a read filter, or we're going to process taps, set up to
1023 do a dissection and do so. */
1024 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1027 create_proto_tree = TRUE;
1029 /* The protocol tree will be "visible", i.e., printed, only if we're
1030 printing packet details, which is true if we're in verbose mode ("verbose"
1032 epan_dissect_init(&edt, create_proto_tree, FALSE);
1034 /* If we're running a read filter, prime the epan_dissect_t with that
1036 if (n_rfilters > 0) {
1037 for(i = 0; i < n_rfcodes; i++) {
1038 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1042 tap_queue_init(&edt);
1044 printf("%lu", (unsigned long int) cf->count);
1046 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1047 &first_ts, &prev_dis_ts, &prev_cap_ts);
1049 /* We only need the columns if we're printing packet info but we're
1050 *not* verbose; in verbose mode, we print the protocol tree, not
1051 the protocol summary. */
1052 epan_dissect_run(&edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1054 tap_push_tapped_queue(&edt);
1056 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
1058 for(i = 0; i < n_rfilters; i++) {
1059 /* Run the read filter if we have one. */
1061 passed = dfilter_apply_edt(rfcodes[i], &edt);
1065 /* Print a one-line summary */
1066 printf(" %u", passed ? 1 : 0);
1071 /* The ANSI C standard does not appear to *require* that a line-buffered
1072 stream be flushed to the host environment whenever a newline is
1073 written, it just says that, on such a stream, characters "are
1074 intended to be transmitted to or from the host environment as a
1075 block when a new-line character is encountered".
1077 The Visual C++ 6.0 C implementation doesn't do what is intended;
1078 even if you set a stream to be line-buffered, it still doesn't
1079 flush the buffer at the end of every line.
1081 So, if the "-l" flag was specified, we flush the standard output
1082 at the end of a packet. This will do the right thing if we're
1083 printing packet summary lines, and, as we print the entire protocol
1084 tree for a single packet without waiting for anything to happen,
1085 it should be as good as line-buffered mode if we're printing
1086 protocol trees. (The whole reason for the "-l" flag in either
1087 tcpdump or Rawshark is to allow the output of a live capture to
1088 be piped to a program or script and to have that script see the
1089 information for the packet as soon as it's printed, rather than
1090 having to wait until a standard I/O buffer fills up. */
1094 if (ferror(stdout)) {
1095 show_print_file_io_error(errno);
1099 epan_dissect_cleanup(&edt);
1100 frame_data_cleanup(&fdata);
1105 /****************************************************************************************
1106 * FIELD EXTRACTION ROUTINES
1107 ****************************************************************************************/
1108 typedef struct _pci_t {
1114 char* ftenum_to_string(header_field_info *hfi)
1120 if (string_fmts->len > 0 && hfi->strings) {
1128 return "FT_PROTOCOL";
1130 return "FT_BOOLEAN";
1155 case FT_ABSOLUTE_TIME:
1156 return "FT_ABSOLUTE_TIME";
1157 case FT_RELATIVE_TIME:
1158 return "FT_RELATIVE_TIME";
1162 return "FT_STRINGZ";
1163 case FT_UINT_STRING:
1164 return "FT_UINT_STRING";
1170 return "FT_UINT_BYTES";
1178 return "FT_FRAMENUM";
1186 return "FT_NUM_TYPES";
1192 char* base_display_e_to_string(base_display_e bd)
1204 return "BASE_DEC_HEX";
1206 return "BASE_HEX_DEC";
1213 * Copied from various parts of proto.c
1215 #define FIELD_STR_INIT_LEN 256
1216 #define cVALS(x) (const value_string*)(x)
1217 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1219 header_field_info *hfinfo;
1220 static char *fs_buf = NULL;
1221 char *fs_ptr = fs_buf;
1222 static GString *label_s = NULL;
1223 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1228 const true_false_string *tfstring = &tfs_true_false;
1230 hfinfo = finfo->hfinfo;
1233 fs_buf = g_malloc(fs_buf_len + 1);
1238 label_s = g_string_new("");
1241 if(finfo->value.ftype->val_to_string_repr)
1244 * this field has an associated value,
1247 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1248 while (fs_buf_len < fs_len) {
1250 fs_buf = g_realloc(fs_buf, fs_buf_len + 1);
1253 fvalue_to_string_repr(&finfo->value,
1257 /* String types are quoted. Remove them. */
1258 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1259 fs_buf[fs_len - 1] = '\0';
1264 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1265 g_string_truncate(label_s, 0);
1266 for (i = 0; i < string_fmts->len; i++) {
1267 sf = g_ptr_array_index(string_fmts, i);
1269 g_string_append(label_s, sf->plain);
1271 switch (sf->format) {
1273 g_string_append(label_s, hfinfo->name);
1276 g_string_append(label_s, fs_ptr);
1279 switch(hfinfo->type) {
1281 uvalue = fvalue_get_uinteger(&finfo->value);
1282 tfstring = (const struct true_false_string*) hfinfo->strings;
1283 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1289 DISSECTOR_ASSERT(!hfinfo->bitmask);
1290 svalue = fvalue_get_sinteger(&finfo->value);
1291 if (hfinfo->display & BASE_RANGE_STRING) {
1292 g_string_append(label_s, rval_to_str(svalue, hfinfo->strings, "Unknown"));
1294 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1300 uvalue = fvalue_get_uinteger(&finfo->value);
1301 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1302 g_string_append(label_s, rval_to_str(uvalue, hfinfo->strings, "Unknown"));
1304 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1316 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1320 if(finfo->value.ftype->val_to_string_repr)
1322 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1327 * This field doesn't have an associated value,
1331 printf(" %u=\"n.a.\"", cmd_line_index);
1336 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1342 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1349 * Print each occurrence of the field
1351 for (i = 0; i < gp->len; i++) {
1352 print_field_value(gp->pdata[i], rs->cmd_line_index);
1358 int g_cmd_line_index = 0;
1361 * field must be persistent - we don't g_strdup() it below
1364 protocolinfo_init(char *field)
1367 header_field_info *hfi;
1368 GString *error_string;
1370 hfi=proto_registrar_get_byname(field);
1372 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1376 printf("%u %s %s - ",
1378 ftenum_to_string(hfi),
1379 base_display_e_to_string(hfi->display));
1381 rs=g_malloc(sizeof(pci_t));
1382 rs->hf_index=hfi->id;
1384 rs->cmd_line_index = g_cmd_line_index++;
1386 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1388 /* error, we failed to attach to the tap. complain and clean up */
1389 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1391 g_string_free(error_string, TRUE);
1402 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1403 * and fill in string_fmt_parts.
1407 add_string_fmt(string_fmt_e format, gchar *plain) {
1408 string_fmt_t *sf = g_malloc(sizeof(string_fmt_t));
1410 sf->format = format;
1411 sf->plain = g_strdup(plain);
1413 g_ptr_array_add(string_fmts, sf);
1417 parse_field_string_format(gchar *format) {
1418 GString *plain_s = g_string_new("");
1426 len = strlen(format);
1427 g_ptr_array_set_size(string_fmts, 0);
1430 if (format[pos] == '%') {
1431 if (pos >= len) { /* There should always be a following character */
1435 if (plain_s->len > 0) {
1436 add_string_fmt(SF_NONE, plain_s->str);
1437 g_string_truncate(plain_s, 0);
1439 switch (format[pos]) {
1441 add_string_fmt(SF_NAME, NULL);
1444 add_string_fmt(SF_NUMVAL, NULL);
1447 add_string_fmt(SF_STRVAL, NULL);
1450 g_string_append_c(plain_s, '%');
1452 default: /* Invalid format */
1456 g_string_append_c(plain_s, format[pos]);
1461 if (plain_s->len > 0) {
1462 add_string_fmt(SF_NONE, plain_s->str);
1464 g_string_free(plain_s, TRUE);
1468 /****************************************************************************************
1469 * END OF FIELD EXTRACTION ROUTINES
1470 ****************************************************************************************/
1473 show_print_file_io_error(int err)
1478 cmdarg_err("Not all the packets could be printed because there is "
1479 "no space left on the file system.");
1484 cmdarg_err("Not all the packets could be printed because you are "
1485 "too close to, or over your disk quota.");
1490 cmdarg_err("An error occurred while printing packets: %s.",
1497 * Open/create errors are reported with an console message in Rawshark.
1500 open_failure_message(const char *filename, int err, gboolean for_writing)
1502 fprintf(stderr, "rawshark: ");
1503 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1504 fprintf(stderr, "\n");
1508 raw_cf_open(capture_file *cf, const char *fname)
1510 if ((fd = raw_pipe_open(fname)) < 0)
1513 /* The open succeeded. Fill in the information for this file. */
1515 /* Cleanup all data structures used for dissection. */
1516 cleanup_dissection();
1517 /* Initialize all data structures used for dissection. */
1521 cf->f_datalen = 0; /* not used, but set it anyway */
1523 /* Set the file name because we need it to set the follow stream filter.
1524 XXX - is that still true? We need it for other reasons, though,
1526 cf->filename = g_strdup(fname);
1528 /* Indicate whether it's a permanent or temporary file. */
1529 cf->is_tempfile = FALSE;
1531 /* If it's a temporary capture buffer file, mark it as not saved. */
1532 cf->user_saved = FALSE;
1534 cf->cd_t = WTAP_FILE_UNKNOWN;
1536 cf->drops_known = FALSE;
1538 cf->has_snap = FALSE;
1539 cf->snap = WTAP_MAX_PACKET_SIZE;
1540 nstime_set_zero(&cf->elapsed_time);
1541 nstime_set_unset(&first_ts);
1542 nstime_set_unset(&prev_dis_ts);
1543 nstime_set_unset(&prev_cap_ts);
1550 * General errors are reported with an console message in Rawshark.
1553 failure_message(const char *msg_format, va_list ap)
1555 fprintf(stderr, "rawshark: ");
1556 vfprintf(stderr, msg_format, ap);
1557 fprintf(stderr, "\n");
1561 * Read errors are reported with an console message in Rawshark.
1564 read_failure_message(const char *filename, int err)
1566 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1567 filename, strerror(err));
1571 * Write errors are reported with an console message in Rawshark.
1574 write_failure_message(const char *filename, int err)
1576 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1577 filename, strerror(err));
1581 * Report an error in command-line arguments.
1584 cmdarg_err(const char *fmt, ...)
1589 fprintf(stderr, "rawshark: ");
1590 vfprintf(stderr, fmt, ap);
1591 fprintf(stderr, "\n");
1596 * Report additional information for an error in command-line arguments.
1599 cmdarg_err_cont(const char *fmt, ...)
1604 vfprintf(stderr, fmt, ap);
1605 fprintf(stderr, "\n");
1610 /****************************************************************************************************************/
1611 /* other "dummies" */
1613 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1615 /* shouldn't happen */
1616 g_assert_not_reached();
1625 * indent-tabs-mode: t
1628 * ex: set shiftwidth=4 tabstop=4 noexpandtab
1629 * :indentSize=4:tabSize=4:noTabs=false: