5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
9 * Rawshark - Raw field extractor by Gerald Combs <gerald@wireshark.org>
10 * and Loris Degioanni <loris.degioanni@cacetech.com>
11 * Based on TShark, by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 * Rawshark does the following:
31 * - Opens a specified file or named pipe
32 * - Applies a specfied DLT or "decode as" encapsulation
33 * - Reads frames prepended with a libpcap packet header.
34 * - Prints a status line, followed by fields from a specified list.
60 #ifdef HAVE_SYS_STAT_H
61 # include <sys/stat.h>
64 #ifdef NEED_STRERROR_H
65 #include "wsutil/strerror.h"
71 #include "wsutil/wsgetopt.h"
75 #include <epan/epan.h>
76 #include <epan/filesystem.h>
77 #include <wsutil/privileges.h>
78 #include <wsutil/file_util.h>
81 #include <epan/packet.h>
83 #include "disabled_protos.h"
84 #include <epan/prefs.h>
85 #include <epan/column.h>
87 #include <epan/addr_resolv.h>
89 #include "clopts_common.h"
90 #include "cmdarg_err.h"
91 #include "version_info.h"
92 #include <epan/plugins.h>
94 #include "conditions.h"
95 #include "capture_stop_conditions.h"
96 #include "capture_ui_utils.h"
97 #include <epan/epan_dissect.h>
98 #include <epan/stat_cmd_args.h>
99 #include <epan/timestamp.h>
100 #include <wsutil/unicode-utils.h>
101 #include "epan/column-utils.h"
102 #include "epan/proto.h"
103 #include <epan/tap.h>
105 #include <wiretap/wtap.h>
106 #include <wiretap/libpcap.h>
107 #include <wiretap/pcap-encap.h>
111 #include "capture-pcap-util.h"
114 #include "capture-wpcap.h"
115 #include "capture_errs.h"
117 #endif /* HAVE_LIBPCAP */
121 * This is the template for the decode as option; it is shared between the
122 * various functions that output the usage for this parameter.
124 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
126 static guint32 cum_bytes;
127 static nstime_t first_ts;
128 static nstime_t prev_dis_ts;
129 static nstime_t prev_cap_ts;
132 * The way the packet decode is to be written.
135 WRITE_TEXT, /* summary or detail text */
136 WRITE_XML /* PDML or PSML */
137 /* Add CSV and the like here */
140 static gboolean line_buffered;
141 static print_format_e print_format = PR_FMT_TEXT;
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 const 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, " -R <read filter> packet filter in Wireshark display filter syntax\n");
206 fprintf(output, " -F <field> field to display\n");
207 fprintf(output, " -s skip PCAP header on input\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, " -d <encap:dlt>|<proto:protoname>\n");
211 fprintf(output, " packet encapsulation or protocol\n");
213 /*fprintf(output, "\n");*/
214 fprintf(output, "Output:\n");
215 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval)\n");
216 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
217 fprintf(output, " -l flush output after each packet\n");
219 fprintf(output, "\n");
220 fprintf(output, "Miscellaneous:\n");
221 fprintf(output, " -h display this help and exit\n");
222 fprintf(output, " -v display version info and exit\n");
223 fprintf(output, " -o <name>:<value> ... override preference setting\n");
227 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
228 const gchar *message _U_, gpointer user_data _U_)
233 * Open a pipe for raw input. This is a stripped-down version of
234 * pcap_loop.c:cap_pipe_open_live().
235 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
236 * @param pipe_name The name of the pipe or FIFO.
237 * @return A POSIX file descriptor on success, or -1 on failure.
240 raw_pipe_open(const char *pipe_name)
243 struct stat pipe_stat;
252 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
255 * XXX Rawshark blocks until we return
257 if (strcmp(pipe_name, "-") == 0) {
258 rfd = 0; /* read from stdin */
261 * This is needed to set the stdin pipe into binary mode, otherwise
262 * CR/LF are mangled...
264 _setmode(0, _O_BINARY);
268 if (ws_stat(pipe_name, &pipe_stat) < 0) {
269 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
270 pipe_name, strerror(errno));
273 if (! S_ISFIFO(pipe_stat.st_mode)) {
274 if (S_ISCHR(pipe_stat.st_mode)) {
276 * Assume the user specified an interface on a system where
277 * interfaces are in /dev. Pretend we haven't seen it.
281 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
286 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
288 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
289 pipe_name, strerror(errno));
293 #define PIPE_STR "\\pipe\\"
294 /* Under Windows, named pipes _must_ have the form
295 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
297 pncopy = g_strdup(pipe_name);
298 if (strstr(pncopy, "\\\\") == pncopy) {
299 pos = strchr(pncopy + 3, '\\');
300 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
307 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
312 /* Wait for the pipe to appear */
314 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
315 OPEN_EXISTING, 0, NULL);
317 if (hPipe != INVALID_HANDLE_VALUE)
320 err = GetLastError();
321 if (err != ERROR_PIPE_BUSY) {
322 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
323 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
324 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
325 pipe_name, utf_16to8(err_str), err);
330 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
331 err = GetLastError();
332 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
333 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
334 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
335 pipe_name, utf_16to8(err_str), err);
341 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
343 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
344 pipe_name, strerror(errno));
354 * Parse a link-type argument of the form "encap:<pcap dlt>" or
355 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
356 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
357 * a protocol name, e.g. "http".
360 set_link_type(const char *lt_arg) {
361 char *spec_ptr = strchr(lt_arg, ':');
365 dissector_handle_t dhandle;
373 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
374 dlt_val = linktype_name_to_val(spec_ptr);
377 val = strtol(spec_ptr, &p, 10);
378 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
383 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
384 if (encap == WTAP_ENCAP_UNKNOWN) {
388 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
389 dhandle = find_dissector(spec_ptr);
391 encap = WTAP_ENCAP_USER0;
392 pref_str = g_string_new("uat:user_dlts:");
393 /* This must match the format used in the user_dlts file */
394 g_string_append_printf(pref_str,
395 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
397 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
398 g_string_free(pref_str, TRUE);
401 g_string_free(pref_str, TRUE);
409 show_version(GString *comp_info_str, GString *runtime_info_str)
411 printf("Rawshark " VERSION "%s\n"
418 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
419 runtime_info_str->str);
423 main(int argc, char *argv[])
425 char *init_progfile_dir_error;
427 gboolean arg_error = FALSE;
433 char *gpf_path, *pf_path;
434 char *gdp_path, *dp_path;
435 int gpf_open_errno, gpf_read_errno;
436 int pf_open_errno, pf_read_errno;
437 int gdp_open_errno, gdp_read_errno;
438 int dp_open_errno, dp_read_errno;
440 gchar *pipe_name = NULL;
444 GLogLevelFlags log_flags;
445 GPtrArray *disp_fields = g_ptr_array_new();
447 gboolean skip_pcap_header = FALSE;
449 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:sS:t:v"
451 static const char optstring[] = OPTSTRING_INIT;
454 * Get credential information for later use.
456 get_credential_info();
459 * Clear the filters arrays
461 memset(rfilters, 0, sizeof(rfilters));
462 memset(rfcodes, 0, sizeof(rfcodes));
467 * Initialize our string format
469 string_fmts = g_ptr_array_new();
472 * Attempt to get the pathname of the executable file.
474 init_progfile_dir_error = init_progfile_dir(argv[0], main);
475 if (init_progfile_dir_error != NULL) {
476 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
477 init_progfile_dir_error);
481 * Get credential information for later use.
483 get_credential_info();
485 /* nothing more than the standard GLib handler, but without a warning */
487 G_LOG_LEVEL_WARNING |
488 G_LOG_LEVEL_MESSAGE |
492 g_log_set_handler(NULL,
494 log_func_ignore, NULL /* user_data */);
495 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
497 log_func_ignore, NULL /* user_data */);
499 timestamp_set_type(TS_RELATIVE);
500 timestamp_set_precision(TS_PREC_AUTO);
501 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
503 /* Register all dissectors; we must do this before checking for the
504 "-G" flag, as the "-G" flag dumps information registered by the
505 dissectors, and we must do it before we read the preferences, in
506 case any dissectors register preferences. */
507 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
508 failure_message, open_failure_message, read_failure_message,
509 write_failure_message);
511 /* Now register the preferences for any non-dissector modules.
512 We must do that before we read the preferences as well. */
513 prefs_register_modules();
515 /* Set the C-language locale to the native environment. */
516 setlocale(LC_ALL, "");
518 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
519 &pf_open_errno, &pf_read_errno, &pf_path);
520 if (gpf_path != NULL) {
521 if (gpf_open_errno != 0) {
522 cmdarg_err("Can't open global preferences file \"%s\": %s.",
523 pf_path, strerror(gpf_open_errno));
525 if (gpf_read_errno != 0) {
526 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
527 pf_path, strerror(gpf_read_errno));
530 if (pf_path != NULL) {
531 if (pf_open_errno != 0) {
532 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
533 strerror(pf_open_errno));
535 if (pf_read_errno != 0) {
536 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
537 pf_path, strerror(pf_read_errno));
543 /* Set the name resolution code's flags from the preferences. */
544 g_resolv_flags = prefs_p->name_resolve;
546 /* Read the disabled protocols file. */
547 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
548 &dp_path, &dp_open_errno, &dp_read_errno);
549 if (gdp_path != NULL) {
550 if (gdp_open_errno != 0) {
551 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
552 gdp_path, strerror(gdp_open_errno));
554 if (gdp_read_errno != 0) {
555 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
556 gdp_path, strerror(gdp_read_errno));
560 if (dp_path != NULL) {
561 if (dp_open_errno != 0) {
563 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
564 strerror(dp_open_errno));
566 if (dp_read_errno != 0) {
568 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
569 strerror(dp_read_errno));
575 /* Load Wpcap, if possible */
579 cap_file_init(&cfile);
581 /* Print format defaults to this. */
582 print_format = PR_FMT_TEXT;
584 /* Initialize our encapsulation type */
585 encap = WTAP_ENCAP_UNKNOWN;
587 /* Now get our args */
588 /* XXX - We should probably have an option to dump libpcap link types */
589 while ((opt = getopt(argc, argv, optstring)) != -1) {
591 case 'd': /* Payload type */
592 if (!set_link_type(optarg)) {
593 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
597 case 'F': /* Read field to display */
598 g_ptr_array_add(disp_fields, g_strdup(optarg));
600 case 'h': /* Print help and exit */
604 case 'l': /* "Line-buffer" standard output */
605 /* This isn't line-buffering, strictly speaking, it's just
606 flushing the standard output after the information for
607 each packet is printed; however, that should be good
608 enough for all the purposes to which "-l" is put (and
609 is probably actually better for "-V", as it does fewer
612 See the comment in "process_packet()" for an explanation of
613 why we do that, and why we don't just use "setvbuf()" to
614 make the standard output line-buffered (short version: in
615 Windows, "line-buffered" is the same as "fully-buffered",
616 and the output buffer is only flushed when it fills up). */
617 line_buffered = TRUE;
619 case 'n': /* No name resolution */
620 g_resolv_flags = RESOLV_NONE;
622 case 'N': /* Select what types of addresses/port #s to resolve */
623 if (g_resolv_flags == RESOLV_ALL)
624 g_resolv_flags = RESOLV_NONE;
625 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
626 if (badopt != '\0') {
627 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
632 case 'o': /* Override preference from command line */
633 switch (prefs_set_pref(optarg)) {
638 case PREFS_SET_SYNTAX_ERR:
639 cmdarg_err("Invalid -o flag \"%s\"", optarg);
643 case PREFS_SET_NO_SUCH_PREF:
644 case PREFS_SET_OBSOLETE:
645 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
650 case 'r': /* Read capture file xxx */
651 pipe_name = g_strdup(optarg);
653 case 'R': /* Read file filter */
654 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
655 rfilters[n_rfilters++] = optarg;
658 cmdarg_err("Too many display filters");
662 case 's': /* Skip PCAP header */
663 skip_pcap_header = TRUE;
665 case 'S': /* Print string representations */
666 if (!parse_field_string_format(optarg)) {
667 cmdarg_err("Invalid field string format");
671 case 't': /* Time stamp type */
672 if (strcmp(optarg, "r") == 0)
673 timestamp_set_type(TS_RELATIVE);
674 else if (strcmp(optarg, "a") == 0)
675 timestamp_set_type(TS_ABSOLUTE);
676 else if (strcmp(optarg, "ad") == 0)
677 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
678 else if (strcmp(optarg, "d") == 0)
679 timestamp_set_type(TS_DELTA);
680 else if (strcmp(optarg, "dd") == 0)
681 timestamp_set_type(TS_DELTA_DIS);
682 else if (strcmp(optarg, "e") == 0)
683 timestamp_set_type(TS_EPOCH);
685 cmdarg_err("Invalid time stamp type \"%s\"",
687 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
688 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
692 case 'v': /* Show version and exit */
694 GString *comp_info_str;
695 GString *runtime_info_str;
696 /* Assemble the compile-time version information string */
697 comp_info_str = g_string_new("Compiled ");
698 get_compiled_version_info(comp_info_str, epan_get_compiled_version_info);
700 /* Assemble the run-time version information string */
701 runtime_info_str = g_string_new("Running ");
702 get_runtime_version_info(runtime_info_str, NULL);
703 show_version(comp_info_str, runtime_info_str);
704 g_string_free(comp_info_str, TRUE);
705 g_string_free(runtime_info_str, TRUE);
710 case '?': /* Bad flag - print usage message */
717 /* Notify all registered modules that have had any of their preferences
718 changed either from one of the preferences file or from the command
719 line that their preferences have changed.
720 Initialize preferences before display filters, otherwise modules
721 like MATE won't work. */
724 /* Initialize our display fields */
725 for (fc = 0; fc < disp_fields->len; fc++) {
726 protocolinfo_init((char *)g_ptr_array_index(disp_fields, fc));
728 g_ptr_array_free(disp_fields, TRUE);
732 /* If no capture filter or read filter has been specified, and there are
733 still command-line arguments, treat them as the tokens of a capture
734 filter (if no "-r" flag was specified) or a read filter (if a "-r"
735 flag was specified. */
737 if (pipe_name != NULL) {
738 if (n_rfilters != 0) {
739 cmdarg_err("Read filters were specified both with \"-R\" "
740 "and with additional command-line arguments");
743 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
747 /* Make sure we got a dissector handle for our payload. */
748 if (encap == WTAP_ENCAP_UNKNOWN) {
749 cmdarg_err("No valid payload dissector specified.");
760 /* Start windows sockets */
761 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
764 /* At this point MATE will have registered its field array so we can
765 have a tap filter with one of MATE's late-registered fields as part
766 of the filter. We can now process all the "-z" arguments. */
767 start_requested_stats();
769 /* disabled protocols as per configuration file */
770 if (gdp_path == NULL && dp_path == NULL) {
771 set_disabled_protos_list();
774 /* Build the column format array */
775 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
777 if (n_rfilters != 0) {
778 for (i = 0; i < n_rfilters; i++) {
779 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
780 cmdarg_err("%s", dfilter_error_msg);
790 * We're reading a pipe (or capture file).
794 * Immediately relinquish any special privileges we have; we must not
795 * be allowed to read any capture files the user running Rawshark
798 relinquish_special_privs_perm();
800 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
805 /* Do we need to PCAP header and magic? */
806 if (skip_pcap_header) {
807 guint bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
808 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
809 while (bytes_left > 0) {
810 guint bytes = read(fd, buf, bytes_left);
812 cmdarg_err("Not enough bytes for pcap header.");
819 /* Set timestamp precision; there should arguably be a command-line
820 option to let the user set this. */
822 switch(wtap_file_tsprecision(cfile.wth)) {
823 case(WTAP_FILE_TSPREC_SEC):
824 timestamp_set_precision(TS_PREC_AUTO_SEC);
826 case(WTAP_FILE_TSPREC_DSEC):
827 timestamp_set_precision(TS_PREC_AUTO_DSEC);
829 case(WTAP_FILE_TSPREC_CSEC):
830 timestamp_set_precision(TS_PREC_AUTO_CSEC);
832 case(WTAP_FILE_TSPREC_MSEC):
833 timestamp_set_precision(TS_PREC_AUTO_MSEC);
835 case(WTAP_FILE_TSPREC_USEC):
836 timestamp_set_precision(TS_PREC_AUTO_USEC);
838 case(WTAP_FILE_TSPREC_NSEC):
839 timestamp_set_precision(TS_PREC_AUTO_NSEC);
842 g_assert_not_reached();
845 timestamp_set_precision(TS_PREC_AUTO_USEC);
848 /* Process the packets in the file */
849 err = load_cap_file(&cfile);
856 /* If you want to capture live packets, use TShark. */
857 cmdarg_err("Input file or pipe name not specified.");
867 * Read data from a raw pipe. The "raw" data consists of a libpcap
868 * packet header followed by the payload.
869 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
870 * of thing you want to use in Windows.
871 * @param phdr [OUT] Packet header information.
872 * @param err [OUT] Error indicator. Uses wiretap values.
873 * @param err_info [OUT] Error message.
874 * @param data_offset [OUT] data offset in the pipe.
875 * @return TRUE on success, FALSE on failure.
878 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, const gchar **err_info, gint64 *data_offset) {
879 struct pcaprec_hdr hdr;
881 int bytes_needed = sizeof(struct pcaprec_hdr);
882 guchar *ptr = (guchar*)&hdr;
883 static gchar err_str[100];
885 /* Copied from capture_loop.c */
886 while (bytes_needed > 0) {
887 bytes_read = read(fd, ptr, bytes_needed);
888 if (bytes_read == 0) {
891 } else if (bytes_read < 0) {
892 *err = WTAP_ERR_CANT_READ;
893 *err_info = "Error reading header from pipe";
896 bytes_needed -= bytes_read;
897 *data_offset += bytes_read;
901 phdr->ts.secs = hdr.ts_sec;
902 phdr->ts.nsecs = hdr.ts_usec * 1000;
903 phdr->caplen = bytes_needed = hdr.incl_len;
904 phdr->len = hdr.orig_len;
905 phdr->pkt_encap = encap;
908 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
909 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
910 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
911 printf("len: %d (%04x)\n", hdr.len, hdr.len);
913 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
914 *err = WTAP_ERR_BAD_RECORD;
915 g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
921 while (bytes_needed > 0) {
922 bytes_read = read(fd, ptr, bytes_needed);
923 if (bytes_read == 0) {
924 *err = WTAP_ERR_SHORT_READ;
925 *err_info = "Got zero bytes reading data from pipe";
927 } else if (bytes_read < 0) {
928 *err = WTAP_ERR_CANT_READ;
929 *err_info = "Error reading data from pipe";
932 bytes_needed -= bytes_read;
933 *data_offset += bytes_read;
940 load_cap_file(capture_file *cf)
943 const gchar *err_info;
944 gint64 data_offset = 0;
945 struct wtap_pkthdr phdr;
946 guchar pd[WTAP_MAX_PACKET_SIZE];
948 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
949 process_packet(cf, data_offset, &phdr, pd);
953 /* Print a message noting that the read failed somewhere along the line. */
956 case WTAP_ERR_UNSUPPORTED_ENCAP:
957 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
958 cf->filename, err_info);
961 case WTAP_ERR_CANT_READ:
962 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
966 case WTAP_ERR_SHORT_READ:
967 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
971 case WTAP_ERR_BAD_RECORD:
972 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
973 cf->filename, err_info);
977 cmdarg_err("An error occurred while reading \"%s\": %s.",
978 cf->filename, wtap_strerror(err));
987 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
991 gboolean create_proto_tree;
994 union wtap_pseudo_header pseudo_header;
999 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1000 packets to process. We spit out a line with the timestamp and the text "void"
1002 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1003 (unsigned long int)whdr->ts.secs,
1004 (unsigned long int)whdr->ts.nsecs);
1011 memset(&pseudo_header, 0, sizeof(pseudo_header));
1013 /* Count this packet. */
1016 /* If we're going to print packet information, or we're going to
1017 run a read filter, or we're going to process taps, set up to
1018 do a dissection and do so. */
1019 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1022 create_proto_tree = TRUE;
1024 /* The protocol tree will be "visible", i.e., printed, only if we're
1025 printing packet details, which is true if we're in verbose mode ("verbose"
1027 epan_dissect_init(&edt, create_proto_tree, FALSE);
1029 /* If we're running a read filter, prime the epan_dissect_t with that
1031 if (n_rfilters > 0) {
1032 for(i = 0; i < n_rfcodes; i++) {
1033 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1037 tap_queue_init(&edt);
1039 printf("%lu", (unsigned long int) cf->count);
1041 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1042 &first_ts, &prev_dis_ts, &prev_cap_ts);
1044 /* We only need the columns if we're printing packet info but we're
1045 *not* verbose; in verbose mode, we print the protocol tree, not
1046 the protocol summary. */
1047 epan_dissect_run(&edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1049 tap_push_tapped_queue(&edt);
1051 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
1053 for(i = 0; i < n_rfilters; i++) {
1054 /* Run the read filter if we have one. */
1056 passed = dfilter_apply_edt(rfcodes[i], &edt);
1060 /* Print a one-line summary */
1061 printf(" %u", passed ? 1 : 0);
1066 /* The ANSI C standard does not appear to *require* that a line-buffered
1067 stream be flushed to the host environment whenever a newline is
1068 written, it just says that, on such a stream, characters "are
1069 intended to be transmitted to or from the host environment as a
1070 block when a new-line character is encountered".
1072 The Visual C++ 6.0 C implementation doesn't do what is intended;
1073 even if you set a stream to be line-buffered, it still doesn't
1074 flush the buffer at the end of every line.
1076 So, if the "-l" flag was specified, we flush the standard output
1077 at the end of a packet. This will do the right thing if we're
1078 printing packet summary lines, and, as we print the entire protocol
1079 tree for a single packet without waiting for anything to happen,
1080 it should be as good as line-buffered mode if we're printing
1081 protocol trees. (The whole reason for the "-l" flag in either
1082 tcpdump or Rawshark is to allow the output of a live capture to
1083 be piped to a program or script and to have that script see the
1084 information for the packet as soon as it's printed, rather than
1085 having to wait until a standard I/O buffer fills up. */
1089 if (ferror(stdout)) {
1090 show_print_file_io_error(errno);
1094 epan_dissect_cleanup(&edt);
1095 frame_data_cleanup(&fdata);
1100 /****************************************************************************************
1101 * FIELD EXTRACTION ROUTINES
1102 ****************************************************************************************/
1103 typedef struct _pci_t {
1109 static const char* ftenum_to_string(header_field_info *hfi)
1115 if (string_fmts->len > 0 && hfi->strings) {
1123 return "FT_PROTOCOL";
1125 return "FT_BOOLEAN";
1150 case FT_ABSOLUTE_TIME:
1151 return "FT_ABSOLUTE_TIME";
1152 case FT_RELATIVE_TIME:
1153 return "FT_RELATIVE_TIME";
1157 return "FT_STRINGZ";
1158 case FT_UINT_STRING:
1159 return "FT_UINT_STRING";
1165 return "FT_UINT_BYTES";
1173 return "FT_FRAMENUM";
1181 return "FT_NUM_TYPES";
1187 static const char* absolute_time_display_e_to_string(absolute_time_display_e atd)
1190 case ABSOLUTE_TIME_LOCAL:
1191 return "ABSOLUTE_TIME_LOCAL";
1192 case ABSOLUTE_TIME_UTC:
1193 return "ABSOLUTE_TIME_UTC";
1199 static const char* base_display_e_to_string(base_display_e bd)
1211 return "BASE_DEC_HEX";
1213 return "BASE_HEX_DEC";
1220 * Copied from various parts of proto.c
1222 #define FIELD_STR_INIT_LEN 256
1223 #define cVALS(x) (const value_string*)(x)
1224 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1226 header_field_info *hfinfo;
1227 static char *fs_buf = NULL;
1228 char *fs_ptr = fs_buf;
1229 static GString *label_s = NULL;
1230 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1235 const true_false_string *tfstring = &tfs_true_false;
1237 hfinfo = finfo->hfinfo;
1240 fs_buf = (char *)g_malloc(fs_buf_len + 1);
1245 label_s = g_string_new("");
1248 if(finfo->value.ftype->val_to_string_repr)
1251 * this field has an associated value,
1254 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1255 while (fs_buf_len < fs_len) {
1257 fs_buf = (char *)g_realloc(fs_buf, fs_buf_len + 1);
1260 fvalue_to_string_repr(&finfo->value,
1264 /* String types are quoted. Remove them. */
1265 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1266 fs_buf[fs_len - 1] = '\0';
1271 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1272 g_string_truncate(label_s, 0);
1273 for (i = 0; i < string_fmts->len; i++) {
1274 sf = (string_fmt_t *)g_ptr_array_index(string_fmts, i);
1276 g_string_append(label_s, sf->plain);
1278 switch (sf->format) {
1280 g_string_append(label_s, hfinfo->name);
1283 g_string_append(label_s, fs_ptr);
1286 switch(hfinfo->type) {
1288 uvalue = fvalue_get_uinteger(&finfo->value);
1289 tfstring = (const struct true_false_string*) hfinfo->strings;
1290 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1296 DISSECTOR_ASSERT(!hfinfo->bitmask);
1297 svalue = fvalue_get_sinteger(&finfo->value);
1298 if (hfinfo->display & BASE_RANGE_STRING) {
1299 g_string_append(label_s, rval_to_str(svalue, RVALS(hfinfo->strings), "Unknown"));
1301 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1308 uvalue = fvalue_get_uinteger(&finfo->value);
1309 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1310 g_string_append(label_s, rval_to_str(uvalue, RVALS(hfinfo->strings), "Unknown"));
1312 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1324 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1328 if(finfo->value.ftype->val_to_string_repr)
1330 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1335 * This field doesn't have an associated value,
1339 printf(" %u=\"n.a.\"", cmd_line_index);
1344 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1346 pci_t *rs=(pci_t *)prs;
1350 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1357 * Print each occurrence of the field
1359 for (i = 0; i < gp->len; i++) {
1360 print_field_value((field_info *)gp->pdata[i], rs->cmd_line_index);
1366 int g_cmd_line_index = 0;
1369 * field must be persistent - we don't g_strdup() it below
1372 protocolinfo_init(char *field)
1375 header_field_info *hfi;
1376 GString *error_string;
1378 hfi=proto_registrar_get_byname(field);
1380 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1384 switch (hfi->type) {
1386 case FT_ABSOLUTE_TIME:
1387 printf("%u %s %s - ",
1389 ftenum_to_string(hfi),
1390 absolute_time_display_e_to_string(hfi->display));
1395 printf("%u %s %s - ",
1397 ftenum_to_string(hfi),
1398 base_display_e_to_string(hfi->display));
1402 rs=(pci_t *)g_malloc(sizeof(pci_t));
1403 rs->hf_index=hfi->id;
1405 rs->cmd_line_index = g_cmd_line_index++;
1407 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1409 /* error, we failed to attach to the tap. complain and clean up */
1410 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1412 g_string_free(error_string, TRUE);
1423 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1424 * and fill in string_fmt_parts.
1428 add_string_fmt(string_fmt_e format, gchar *plain) {
1429 string_fmt_t *sf = (string_fmt_t *)g_malloc(sizeof(string_fmt_t));
1431 sf->format = format;
1432 sf->plain = g_strdup(plain);
1434 g_ptr_array_add(string_fmts, sf);
1438 parse_field_string_format(gchar *format) {
1439 GString *plain_s = g_string_new("");
1447 len = strlen(format);
1448 g_ptr_array_set_size(string_fmts, 0);
1451 if (format[pos] == '%') {
1452 if (pos >= len) { /* There should always be a following character */
1456 if (plain_s->len > 0) {
1457 add_string_fmt(SF_NONE, plain_s->str);
1458 g_string_truncate(plain_s, 0);
1460 switch (format[pos]) {
1462 add_string_fmt(SF_NAME, NULL);
1465 add_string_fmt(SF_NUMVAL, NULL);
1468 add_string_fmt(SF_STRVAL, NULL);
1471 g_string_append_c(plain_s, '%');
1473 default: /* Invalid format */
1477 g_string_append_c(plain_s, format[pos]);
1482 if (plain_s->len > 0) {
1483 add_string_fmt(SF_NONE, plain_s->str);
1485 g_string_free(plain_s, TRUE);
1489 /****************************************************************************************
1490 * END OF FIELD EXTRACTION ROUTINES
1491 ****************************************************************************************/
1494 show_print_file_io_error(int err)
1499 cmdarg_err("Not all the packets could be printed because there is "
1500 "no space left on the file system.");
1505 cmdarg_err("Not all the packets could be printed because you are "
1506 "too close to, or over your disk quota.");
1511 cmdarg_err("An error occurred while printing packets: %s.",
1518 * Open/create errors are reported with an console message in Rawshark.
1521 open_failure_message(const char *filename, int err, gboolean for_writing)
1523 fprintf(stderr, "rawshark: ");
1524 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1525 fprintf(stderr, "\n");
1529 raw_cf_open(capture_file *cf, const char *fname)
1531 if ((fd = raw_pipe_open(fname)) < 0)
1534 /* The open succeeded. Fill in the information for this file. */
1536 /* Cleanup all data structures used for dissection. */
1537 cleanup_dissection();
1538 /* Initialize all data structures used for dissection. */
1542 cf->f_datalen = 0; /* not used, but set it anyway */
1544 /* Set the file name because we need it to set the follow stream filter.
1545 XXX - is that still true? We need it for other reasons, though,
1547 cf->filename = g_strdup(fname);
1549 /* Indicate whether it's a permanent or temporary file. */
1550 cf->is_tempfile = FALSE;
1552 /* If it's a temporary capture buffer file, mark it as not saved. */
1553 cf->user_saved = FALSE;
1555 cf->cd_t = WTAP_FILE_UNKNOWN;
1557 cf->drops_known = FALSE;
1559 cf->has_snap = FALSE;
1560 cf->snap = WTAP_MAX_PACKET_SIZE;
1561 nstime_set_zero(&cf->elapsed_time);
1562 nstime_set_unset(&first_ts);
1563 nstime_set_unset(&prev_dis_ts);
1564 nstime_set_unset(&prev_cap_ts);
1571 * General errors are reported with an console message in Rawshark.
1574 failure_message(const char *msg_format, va_list ap)
1576 fprintf(stderr, "rawshark: ");
1577 vfprintf(stderr, msg_format, ap);
1578 fprintf(stderr, "\n");
1582 * Read errors are reported with an console message in Rawshark.
1585 read_failure_message(const char *filename, int err)
1587 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1588 filename, strerror(err));
1592 * Write errors are reported with an console message in Rawshark.
1595 write_failure_message(const char *filename, int err)
1597 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1598 filename, strerror(err));
1602 * Report an error in command-line arguments.
1605 cmdarg_err(const char *fmt, ...)
1610 fprintf(stderr, "rawshark: ");
1611 vfprintf(stderr, fmt, ap);
1612 fprintf(stderr, "\n");
1617 * Report additional information for an error in command-line arguments.
1620 cmdarg_err_cont(const char *fmt, ...)
1625 vfprintf(stderr, fmt, ap);
1626 fprintf(stderr, "\n");
1631 /****************************************************************************************************************/
1632 /* other "dummies" */
1634 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1636 /* shouldn't happen */
1637 g_assert_not_reached();
1646 * indent-tabs-mode: nil
1649 * ex: set shiftwidth=4 tabstop=8 expandtab
1650 * :indentSize=4:tabSize=8:noTabs=true: