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
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>
112 #include "capture-pcap-util.h"
115 #include "capture-wpcap.h"
116 #include "capture_errs.h"
118 #endif /* HAVE_LIBPCAP */
122 * This is the template for the decode as option; it is shared between the
123 * various functions that output the usage for this parameter.
125 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
127 static guint32 cum_bytes;
128 static nstime_t first_ts;
129 static nstime_t prev_dis_ts;
130 static nstime_t prev_cap_ts;
133 * The way the packet decode is to be written.
136 WRITE_TEXT, /* summary or detail text */
137 WRITE_XML /* PDML or PSML */
138 /* Add CSV and the like here */
141 static gboolean line_buffered;
142 static print_format_e print_format = PR_FMT_TEXT;
145 * Standard secondary message for unexpected errors.
147 static const char please_report[] =
148 "Please report this to the Wireshark developers";
150 cf_status_t raw_cf_open(capture_file *cf, const char *fname);
151 static int load_cap_file(capture_file *cf);
152 static gboolean process_packet(capture_file *cf, gint64 offset,
153 const struct wtap_pkthdr *whdr, const guchar *pd);
154 static void show_print_file_io_error(int err);
156 static void open_failure_message(const char *filename, int err,
157 gboolean for_writing);
158 static void failure_message(const char *msg_format, va_list ap);
159 static void read_failure_message(const char *filename, int err);
160 static void write_failure_message(const char *filename, int err);
161 static void protocolinfo_init(char *field);
162 static gboolean parse_field_string_format(char *format);
165 SF_NONE, /* No format (placeholder) */
166 SF_NAME, /* %D Field name / description */
167 SF_NUMVAL, /* %N Numeric value */
168 SF_STRVAL /* %S String value */
171 typedef struct string_fmt_s {
173 string_fmt_e format; /* Valid if plain is NULL */
179 dfilter_t *rfcodes[64];
181 dfilter_t *rfieldfcodes[64];
184 GPtrArray *string_fmts;
187 print_usage(gboolean print_ver)
194 "Rawshark " VERSION "%s\n"
195 "Dump and analyze network traffic.\n"
196 "See http://www.wireshark.org for more information.\n"
199 wireshark_svnversion, get_copyright_info());
203 fprintf(output, "\n");
204 fprintf(output, "Usage: rawshark [options] ...\n");
205 fprintf(output, "\n");
207 fprintf(output, "Input file:\n");
208 fprintf(output, " -r <infile> set the pipe or file name to read from\n");
210 fprintf(output, "\n");
211 fprintf(output, "Processing:\n");
212 fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
213 fprintf(output, " -F <field> field to display\n");
214 fprintf(output, " -s skip PCAP header on input\n");
215 fprintf(output, " -n disable all name resolution (def: all enabled)\n");
216 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
217 fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
218 fprintf(output, " packet encapsulation or protocol\n");
220 /*fprintf(output, "\n");*/
221 fprintf(output, "Output:\n");
222 fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval)\n");
223 fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
224 fprintf(output, " -l flush output after each packet\n");
226 fprintf(output, "\n");
227 fprintf(output, "Miscellaneous:\n");
228 fprintf(output, " -h display this help and exit\n");
229 fprintf(output, " -v display version info and exit\n");
230 fprintf(output, " -o <name>:<value> ... override preference setting\n");
234 log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
235 const gchar *message _U_, gpointer user_data _U_)
240 * Open a pipe for raw input. This is a stripped-down version of
241 * pcap_loop.c:cap_pipe_open_live().
242 * We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
243 * @param pipe_name The name of the pipe or FIFO.
244 * @return A POSIX file descriptor on success, or -1 on failure.
247 raw_pipe_open(const char *pipe_name)
250 struct stat pipe_stat;
259 g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
262 * XXX Rawshark blocks until we return
264 if (strcmp(pipe_name, "-") == 0) {
265 rfd = 0; /* read from stdin */
268 * This is needed to set the stdin pipe into binary mode, otherwise
269 * CR/LF are mangled...
271 _setmode(0, _O_BINARY);
275 if (ws_stat(pipe_name, &pipe_stat) < 0) {
276 fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
277 pipe_name, strerror(errno));
280 if (! S_ISFIFO(pipe_stat.st_mode)) {
281 if (S_ISCHR(pipe_stat.st_mode)) {
283 * Assume the user specified an interface on a system where
284 * interfaces are in /dev. Pretend we haven't seen it.
288 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
293 rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
295 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
296 pipe_name, strerror(errno));
300 #define PIPE_STR "\\pipe\\"
301 /* Under Windows, named pipes _must_ have the form
302 * "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
304 pncopy = g_strdup(pipe_name);
305 if (strstr(pncopy, "\\\\") == pncopy) {
306 pos = strchr(pncopy + 3, '\\');
307 if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
314 fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
319 /* Wait for the pipe to appear */
321 hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
322 OPEN_EXISTING, 0, NULL);
324 if (hPipe != INVALID_HANDLE_VALUE)
327 err = GetLastError();
328 if (err != ERROR_PIPE_BUSY) {
329 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
330 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
331 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
332 pipe_name, utf_16to8(err_str), err);
337 if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
338 err = GetLastError();
339 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
340 NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
341 fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
342 pipe_name, utf_16to8(err_str), err);
348 rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
350 fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
351 pipe_name, strerror(errno));
361 * Parse a link-type argument of the form "encap:<pcap dlt>" or
362 * "proto:<proto name>". "Pcap dlt" must be a name conforming to
363 * pcap_datalink_name_to_val() or an integer. "Proto name" must be
364 * a protocol name, e.g. "http".
367 set_link_type(const char *lt_arg) {
368 char *spec_ptr = strchr(lt_arg, ':');
372 dissector_handle_t dhandle;
380 if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
381 dlt_val = linktype_name_to_val(spec_ptr);
384 val = strtol(spec_ptr, &p, 10);
385 if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
390 encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
391 if (encap == WTAP_ENCAP_UNKNOWN) {
395 } else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
396 dhandle = find_dissector(spec_ptr);
398 encap = WTAP_ENCAP_USER0;
399 pref_str = g_string_new("uat:user_dlts:");
400 /* This must match the format used in the user_dlts file */
401 g_string_append_printf(pref_str,
402 "\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
404 if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
405 g_string_free(pref_str, TRUE);
408 g_string_free(pref_str, TRUE);
416 show_version(GString *comp_info_str, GString *runtime_info_str)
418 printf("Rawshark " VERSION "%s\n"
425 wireshark_svnversion, get_copyright_info(), comp_info_str->str,
426 runtime_info_str->str);
430 main(int argc, char *argv[])
432 char *init_progfile_dir_error;
434 gboolean arg_error = FALSE;
440 char *gpf_path, *pf_path;
441 char *gdp_path, *dp_path;
442 int gpf_open_errno, gpf_read_errno;
443 int pf_open_errno, pf_read_errno;
444 int gdp_open_errno, gdp_read_errno;
445 int dp_open_errno, dp_read_errno;
447 gchar *pipe_name = NULL;
451 GLogLevelFlags log_flags;
452 GPtrArray *disp_fields = g_ptr_array_new();
454 gboolean skip_pcap_header = FALSE;
456 #define OPTSTRING_INIT "d:F:hlnN:o:r:R:sS:t:v"
458 static const char optstring[] = OPTSTRING_INIT;
461 * Get credential information for later use.
463 get_credential_info();
466 * Clear the filters arrays
468 memset(rfilters, 0, sizeof(rfilters));
469 memset(rfcodes, 0, sizeof(rfcodes));
474 * Initialize our string format
476 string_fmts = g_ptr_array_new();
479 * Attempt to get the pathname of the executable file.
481 init_progfile_dir_error = init_progfile_dir(argv[0], main);
482 if (init_progfile_dir_error != NULL) {
483 fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
484 init_progfile_dir_error);
488 * Get credential information for later use.
490 get_credential_info();
492 /* nothing more than the standard GLib handler, but without a warning */
494 G_LOG_LEVEL_WARNING |
495 G_LOG_LEVEL_MESSAGE |
499 g_log_set_handler(NULL,
501 log_func_ignore, NULL /* user_data */);
502 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
504 log_func_ignore, NULL /* user_data */);
506 timestamp_set_type(TS_RELATIVE);
507 timestamp_set_precision(TS_PREC_AUTO);
509 /* Register all dissectors; we must do this before checking for the
510 "-G" flag, as the "-G" flag dumps information registered by the
511 dissectors, and we must do it before we read the preferences, in
512 case any dissectors register preferences. */
513 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
514 failure_message, open_failure_message, read_failure_message,
515 write_failure_message);
517 /* Now register the preferences for any non-dissector modules.
518 We must do that before we read the preferences as well. */
519 prefs_register_modules();
521 /* Set the C-language locale to the native environment. */
522 setlocale(LC_ALL, "");
524 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
525 &pf_open_errno, &pf_read_errno, &pf_path);
526 if (gpf_path != NULL) {
527 if (gpf_open_errno != 0) {
528 cmdarg_err("Can't open global preferences file \"%s\": %s.",
529 pf_path, strerror(gpf_open_errno));
531 if (gpf_read_errno != 0) {
532 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
533 pf_path, strerror(gpf_read_errno));
536 if (pf_path != NULL) {
537 if (pf_open_errno != 0) {
538 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
539 strerror(pf_open_errno));
541 if (pf_read_errno != 0) {
542 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
543 pf_path, strerror(pf_read_errno));
549 /* Set the name resolution code's flags from the preferences. */
550 g_resolv_flags = prefs_p->name_resolve;
552 /* Read the disabled protocols file. */
553 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
554 &dp_path, &dp_open_errno, &dp_read_errno);
555 if (gdp_path != NULL) {
556 if (gdp_open_errno != 0) {
557 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
558 gdp_path, strerror(gdp_open_errno));
560 if (gdp_read_errno != 0) {
561 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
562 gdp_path, strerror(gdp_read_errno));
566 if (dp_path != NULL) {
567 if (dp_open_errno != 0) {
569 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
570 strerror(dp_open_errno));
572 if (dp_read_errno != 0) {
574 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
575 strerror(dp_read_errno));
581 /* Load Wpcap, if possible */
585 cap_file_init(&cfile);
587 /* Print format defaults to this. */
588 print_format = PR_FMT_TEXT;
590 /* Initialize our encapsulation type */
591 encap = WTAP_ENCAP_UNKNOWN;
593 /* Now get our args */
594 /* XXX - We should probably have an option to dump libpcap link types */
595 while ((opt = getopt(argc, argv, optstring)) != -1) {
597 case 'd': /* Payload type */
598 if (!set_link_type(optarg)) {
599 cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
603 case 'F': /* Read field to display */
604 g_ptr_array_add(disp_fields, g_strdup(optarg));
606 case 'h': /* Print help and exit */
610 case 'l': /* "Line-buffer" standard output */
611 /* This isn't line-buffering, strictly speaking, it's just
612 flushing the standard output after the information for
613 each packet is printed; however, that should be good
614 enough for all the purposes to which "-l" is put (and
615 is probably actually better for "-V", as it does fewer
618 See the comment in "process_packet()" for an explanation of
619 why we do that, and why we don't just use "setvbuf()" to
620 make the standard output line-buffered (short version: in
621 Windows, "line-buffered" is the same as "fully-buffered",
622 and the output buffer is only flushed when it fills up). */
623 line_buffered = TRUE;
625 case 'n': /* No name resolution */
626 g_resolv_flags = RESOLV_NONE;
628 case 'N': /* Select what types of addresses/port #s to resolve */
629 if (g_resolv_flags == RESOLV_ALL)
630 g_resolv_flags = RESOLV_NONE;
631 badopt = string_to_name_resolve(optarg, &g_resolv_flags);
632 if (badopt != '\0') {
633 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
638 case 'o': /* Override preference from command line */
639 switch (prefs_set_pref(optarg)) {
644 case PREFS_SET_SYNTAX_ERR:
645 cmdarg_err("Invalid -o flag \"%s\"", optarg);
649 case PREFS_SET_NO_SUCH_PREF:
650 case PREFS_SET_OBSOLETE:
651 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
656 case 'r': /* Read capture file xxx */
657 pipe_name = g_strdup(optarg);
659 case 'R': /* Read file filter */
660 if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
661 rfilters[n_rfilters++] = optarg;
664 cmdarg_err("Too many display filters");
668 case 's': /* Skip PCAP header */
669 skip_pcap_header = TRUE;
671 case 'S': /* Print string representations */
672 if (!parse_field_string_format(optarg)) {
673 cmdarg_err("Invalid field string format");
677 case 't': /* Time stamp type */
678 if (strcmp(optarg, "r") == 0)
679 timestamp_set_type(TS_RELATIVE);
680 else if (strcmp(optarg, "a") == 0)
681 timestamp_set_type(TS_ABSOLUTE);
682 else if (strcmp(optarg, "ad") == 0)
683 timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
684 else if (strcmp(optarg, "d") == 0)
685 timestamp_set_type(TS_DELTA);
686 else if (strcmp(optarg, "dd") == 0)
687 timestamp_set_type(TS_DELTA_DIS);
688 else if (strcmp(optarg, "e") == 0)
689 timestamp_set_type(TS_EPOCH);
691 cmdarg_err("Invalid time stamp type \"%s\"",
693 cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
694 cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
698 case 'v': /* Show version and exit */
700 GString *comp_info_str;
701 GString *runtime_info_str;
702 /* Assemble the compile-time version information string */
703 comp_info_str = g_string_new("Compiled ");
704 get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
706 /* Assemble the run-time version information string */
707 runtime_info_str = g_string_new("Running ");
708 get_runtime_version_info(runtime_info_str, NULL);
709 show_version(comp_info_str, runtime_info_str);
710 g_string_free(comp_info_str, TRUE);
711 g_string_free(runtime_info_str, TRUE);
716 case '?': /* Bad flag - print usage message */
723 /* Notify all registered modules that have had any of their preferences
724 changed either from one of the preferences file or from the command
725 line that their preferences have changed.
726 Initialize preferences before display filters, otherwise modules
727 like MATE won't work. */
730 /* Initialize our display fields */
731 for (fc = 0; fc < disp_fields->len; fc++) {
732 protocolinfo_init((char *)g_ptr_array_index(disp_fields, fc));
734 g_ptr_array_free(disp_fields, TRUE);
738 /* If no capture filter or read filter has been specified, and there are
739 still command-line arguments, treat them as the tokens of a capture
740 filter (if no "-r" flag was specified) or a read filter (if a "-r"
741 flag was specified. */
743 if (pipe_name != NULL) {
744 if (n_rfilters != 0) {
745 cmdarg_err("Read filters were specified both with \"-R\" "
746 "and with additional command-line arguments");
749 rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
753 /* Make sure we got a dissector handle for our payload. */
754 if (encap == WTAP_ENCAP_UNKNOWN) {
755 cmdarg_err("No valid payload dissector specified.");
766 /* Start windows sockets */
767 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
770 /* At this point MATE will have registered its field array so we can
771 have a tap filter with one of MATE's late-registered fields as part
772 of the filter. We can now process all the "-z" arguments. */
773 start_requested_stats();
775 /* disabled protocols as per configuration file */
776 if (gdp_path == NULL && dp_path == NULL) {
777 set_disabled_protos_list();
780 /* Build the column format array */
781 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
783 if (n_rfilters != 0) {
784 for (i = 0; i < n_rfilters; i++) {
785 if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
786 cmdarg_err("%s", dfilter_error_msg);
796 * We're reading a pipe (or capture file).
800 * Immediately relinquish any special privileges we have; we must not
801 * be allowed to read any capture files the user running Rawshark
804 relinquish_special_privs_perm();
806 if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
811 /* Do we need to PCAP header and magic? */
812 if (skip_pcap_header) {
813 guint bytes_left = sizeof(struct pcap_hdr) + sizeof(guint32);
814 gchar buf[sizeof(struct pcap_hdr) + sizeof(guint32)];
815 while (bytes_left > 0) {
816 guint bytes = read(fd, buf, bytes_left);
818 cmdarg_err("Not enough bytes for pcap header.");
825 /* Set timestamp precision; there should arguably be a command-line
826 option to let the user set this. */
828 switch(wtap_file_tsprecision(cfile.wth)) {
829 case(WTAP_FILE_TSPREC_SEC):
830 timestamp_set_precision(TS_PREC_AUTO_SEC);
832 case(WTAP_FILE_TSPREC_DSEC):
833 timestamp_set_precision(TS_PREC_AUTO_DSEC);
835 case(WTAP_FILE_TSPREC_CSEC):
836 timestamp_set_precision(TS_PREC_AUTO_CSEC);
838 case(WTAP_FILE_TSPREC_MSEC):
839 timestamp_set_precision(TS_PREC_AUTO_MSEC);
841 case(WTAP_FILE_TSPREC_USEC):
842 timestamp_set_precision(TS_PREC_AUTO_USEC);
844 case(WTAP_FILE_TSPREC_NSEC):
845 timestamp_set_precision(TS_PREC_AUTO_NSEC);
848 g_assert_not_reached();
851 timestamp_set_precision(TS_PREC_AUTO_USEC);
854 /* Process the packets in the file */
855 err = load_cap_file(&cfile);
862 /* If you want to capture live packets, use TShark. */
863 cmdarg_err("Input file or pipe name not specified.");
873 * Read data from a raw pipe. The "raw" data consists of a libpcap
874 * packet header followed by the payload.
875 * @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
876 * of thing you want to use in Windows.
877 * @param phdr [OUT] Packet header information.
878 * @param err [OUT] Error indicator. Uses wiretap values.
879 * @param err_info [OUT] Error message.
880 * @param data_offset [OUT] data offset in the pipe.
881 * @return TRUE on success, FALSE on failure.
884 raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, const gchar **err_info, gint64 *data_offset) {
885 struct pcaprec_hdr hdr;
887 int bytes_needed = sizeof(struct pcaprec_hdr);
888 guchar *ptr = (guchar*)&hdr;
889 static gchar err_str[100];
891 /* Copied from capture_loop.c */
892 while (bytes_needed > 0) {
893 bytes_read = read(fd, ptr, bytes_needed);
894 if (bytes_read == 0) {
897 } else if (bytes_read < 0) {
898 *err = WTAP_ERR_CANT_READ;
899 *err_info = "Error reading header from pipe";
902 bytes_needed -= bytes_read;
903 *data_offset += bytes_read;
907 phdr->ts.secs = hdr.ts_sec;
908 phdr->ts.nsecs = hdr.ts_usec * 1000;
909 phdr->caplen = bytes_needed = hdr.incl_len;
910 phdr->len = hdr.orig_len;
911 phdr->pkt_encap = encap;
914 printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
915 printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
916 printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
917 printf("len: %d (%04x)\n", hdr.len, hdr.len);
919 if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
920 *err = WTAP_ERR_BAD_RECORD;
921 g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
927 while (bytes_needed > 0) {
928 bytes_read = read(fd, ptr, bytes_needed);
929 if (bytes_read == 0) {
930 *err = WTAP_ERR_SHORT_READ;
931 *err_info = "Got zero bytes reading data from pipe";
933 } else if (bytes_read < 0) {
934 *err = WTAP_ERR_CANT_READ;
935 *err_info = "Error reading data from pipe";
938 bytes_needed -= bytes_read;
939 *data_offset += bytes_read;
946 load_cap_file(capture_file *cf)
949 const gchar *err_info;
950 gint64 data_offset = 0;
951 struct wtap_pkthdr phdr;
952 guchar pd[WTAP_MAX_PACKET_SIZE];
954 while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
955 process_packet(cf, data_offset, &phdr, pd);
959 /* Print a message noting that the read failed somewhere along the line. */
962 case WTAP_ERR_UNSUPPORTED_ENCAP:
963 cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
964 cf->filename, err_info);
967 case WTAP_ERR_CANT_READ:
968 cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
972 case WTAP_ERR_SHORT_READ:
973 cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
977 case WTAP_ERR_BAD_RECORD:
978 cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
979 cf->filename, err_info);
983 cmdarg_err("An error occurred while reading \"%s\": %s.",
984 cf->filename, wtap_strerror(err));
993 process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
997 gboolean create_proto_tree;
1000 union wtap_pseudo_header pseudo_header;
1005 /* The user sends an empty packet when he wants to get output from us even if we don't currently have
1006 packets to process. We spit out a line with the timestamp and the text "void"
1008 printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
1009 (unsigned long int)whdr->ts.secs,
1010 (unsigned long int)whdr->ts.nsecs);
1017 memset(&pseudo_header, 0, sizeof(pseudo_header));
1019 /* Count this packet. */
1022 /* If we're going to print packet information, or we're going to
1023 run a read filter, or we're going to process taps, set up to
1024 do a dissection and do so. */
1025 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
1028 create_proto_tree = TRUE;
1030 /* The protocol tree will be "visible", i.e., printed, only if we're
1031 printing packet details, which is true if we're in verbose mode ("verbose"
1033 epan_dissect_init(&edt, create_proto_tree, FALSE);
1035 /* If we're running a read filter, prime the epan_dissect_t with that
1037 if (n_rfilters > 0) {
1038 for(i = 0; i < n_rfcodes; i++) {
1039 epan_dissect_prime_dfilter(&edt, rfcodes[i]);
1043 tap_queue_init(&edt);
1045 printf("%lu", (unsigned long int) cf->count);
1047 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
1048 &first_ts, &prev_dis_ts, &prev_cap_ts);
1050 /* We only need the columns if we're printing packet info but we're
1051 *not* verbose; in verbose mode, we print the protocol tree, not
1052 the protocol summary. */
1053 epan_dissect_run(&edt, &pseudo_header, pd, &fdata, &cf->cinfo);
1055 tap_push_tapped_queue(&edt);
1057 frame_data_set_after_dissect(&fdata, &cum_bytes, &prev_dis_ts);
1059 for(i = 0; i < n_rfilters; i++) {
1060 /* Run the read filter if we have one. */
1062 passed = dfilter_apply_edt(rfcodes[i], &edt);
1066 /* Print a one-line summary */
1067 printf(" %u", passed ? 1 : 0);
1072 /* The ANSI C standard does not appear to *require* that a line-buffered
1073 stream be flushed to the host environment whenever a newline is
1074 written, it just says that, on such a stream, characters "are
1075 intended to be transmitted to or from the host environment as a
1076 block when a new-line character is encountered".
1078 The Visual C++ 6.0 C implementation doesn't do what is intended;
1079 even if you set a stream to be line-buffered, it still doesn't
1080 flush the buffer at the end of every line.
1082 So, if the "-l" flag was specified, we flush the standard output
1083 at the end of a packet. This will do the right thing if we're
1084 printing packet summary lines, and, as we print the entire protocol
1085 tree for a single packet without waiting for anything to happen,
1086 it should be as good as line-buffered mode if we're printing
1087 protocol trees. (The whole reason for the "-l" flag in either
1088 tcpdump or Rawshark is to allow the output of a live capture to
1089 be piped to a program or script and to have that script see the
1090 information for the packet as soon as it's printed, rather than
1091 having to wait until a standard I/O buffer fills up. */
1095 if (ferror(stdout)) {
1096 show_print_file_io_error(errno);
1100 epan_dissect_cleanup(&edt);
1101 frame_data_cleanup(&fdata);
1106 /****************************************************************************************
1107 * FIELD EXTRACTION ROUTINES
1108 ****************************************************************************************/
1109 typedef struct _pci_t {
1115 static const char* ftenum_to_string(header_field_info *hfi)
1121 if (string_fmts->len > 0 && hfi->strings) {
1129 return "FT_PROTOCOL";
1131 return "FT_BOOLEAN";
1156 case FT_ABSOLUTE_TIME:
1157 return "FT_ABSOLUTE_TIME";
1158 case FT_RELATIVE_TIME:
1159 return "FT_RELATIVE_TIME";
1163 return "FT_STRINGZ";
1164 case FT_UINT_STRING:
1165 return "FT_UINT_STRING";
1171 return "FT_UINT_BYTES";
1179 return "FT_FRAMENUM";
1187 return "FT_NUM_TYPES";
1193 static const char* absolute_time_display_e_to_string(absolute_time_display_e atd)
1196 case ABSOLUTE_TIME_LOCAL:
1197 return "ABSOLUTE_TIME_LOCAL";
1198 case ABSOLUTE_TIME_UTC:
1199 return "ABSOLUTE_TIME_UTC";
1205 static const char* base_display_e_to_string(base_display_e bd)
1217 return "BASE_DEC_HEX";
1219 return "BASE_HEX_DEC";
1226 * Copied from various parts of proto.c
1228 #define FIELD_STR_INIT_LEN 256
1229 #define cVALS(x) (const value_string*)(x)
1230 static gboolean print_field_value(field_info *finfo, int cmd_line_index)
1232 header_field_info *hfinfo;
1233 static char *fs_buf = NULL;
1234 char *fs_ptr = fs_buf;
1235 static GString *label_s = NULL;
1236 int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
1241 const true_false_string *tfstring = &tfs_true_false;
1243 hfinfo = finfo->hfinfo;
1246 fs_buf = (char *)g_malloc(fs_buf_len + 1);
1251 label_s = g_string_new("");
1254 if(finfo->value.ftype->val_to_string_repr)
1257 * this field has an associated value,
1260 fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
1261 while (fs_buf_len < fs_len) {
1263 fs_buf = (char *)g_realloc(fs_buf, fs_buf_len + 1);
1266 fvalue_to_string_repr(&finfo->value,
1270 /* String types are quoted. Remove them. */
1271 if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
1272 fs_buf[fs_len - 1] = '\0';
1277 if (string_fmts->len > 0 && finfo->hfinfo->strings) {
1278 g_string_truncate(label_s, 0);
1279 for (i = 0; i < string_fmts->len; i++) {
1280 sf = (string_fmt_t *)g_ptr_array_index(string_fmts, i);
1282 g_string_append(label_s, sf->plain);
1284 switch (sf->format) {
1286 g_string_append(label_s, hfinfo->name);
1289 g_string_append(label_s, fs_ptr);
1292 switch(hfinfo->type) {
1294 uvalue = fvalue_get_uinteger(&finfo->value);
1295 tfstring = (const struct true_false_string*) hfinfo->strings;
1296 g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
1302 DISSECTOR_ASSERT(!hfinfo->bitmask);
1303 svalue = fvalue_get_sinteger(&finfo->value);
1304 if (hfinfo->display & BASE_RANGE_STRING) {
1305 g_string_append(label_s, rval_to_str(svalue, RVALS(hfinfo->strings), "Unknown"));
1307 g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
1314 uvalue = fvalue_get_uinteger(&finfo->value);
1315 if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
1316 g_string_append(label_s, rval_to_str(uvalue, RVALS(hfinfo->strings), "Unknown"));
1318 g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
1330 printf(" %u=\"%s\"", cmd_line_index, label_s->str);
1334 if(finfo->value.ftype->val_to_string_repr)
1336 printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
1341 * This field doesn't have an associated value,
1345 printf(" %u=\"n.a.\"", cmd_line_index);
1350 protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
1352 pci_t *rs=(pci_t *)prs;
1356 gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
1363 * Print each occurrence of the field
1365 for (i = 0; i < gp->len; i++) {
1366 print_field_value((field_info *)gp->pdata[i], rs->cmd_line_index);
1372 int g_cmd_line_index = 0;
1375 * field must be persistent - we don't g_strdup() it below
1378 protocolinfo_init(char *field)
1381 header_field_info *hfi;
1382 GString *error_string;
1384 hfi=proto_registrar_get_byname(field);
1386 fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
1390 switch (hfi->type) {
1392 case FT_ABSOLUTE_TIME:
1393 printf("%u %s %s - ",
1395 ftenum_to_string(hfi),
1396 absolute_time_display_e_to_string(hfi->display));
1401 printf("%u %s %s - ",
1403 ftenum_to_string(hfi),
1404 base_display_e_to_string(hfi->display));
1408 rs=(pci_t *)g_malloc(sizeof(pci_t));
1409 rs->hf_index=hfi->id;
1411 rs->cmd_line_index = g_cmd_line_index++;
1413 error_string=register_tap_listener("frame", rs, rs->filter, TL_REQUIRES_PROTO_TREE, NULL, protocolinfo_packet, NULL);
1415 /* error, we failed to attach to the tap. complain and clean up */
1416 fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
1418 g_string_free(error_string, TRUE);
1429 * Given a format string, split it into a GPtrArray of string_fmt_t structs
1430 * and fill in string_fmt_parts.
1434 add_string_fmt(string_fmt_e format, gchar *plain) {
1435 string_fmt_t *sf = (string_fmt_t *)g_malloc(sizeof(string_fmt_t));
1437 sf->format = format;
1438 sf->plain = g_strdup(plain);
1440 g_ptr_array_add(string_fmts, sf);
1444 parse_field_string_format(gchar *format) {
1445 GString *plain_s = g_string_new("");
1453 len = strlen(format);
1454 g_ptr_array_set_size(string_fmts, 0);
1457 if (format[pos] == '%') {
1458 if (pos >= len) { /* There should always be a following character */
1462 if (plain_s->len > 0) {
1463 add_string_fmt(SF_NONE, plain_s->str);
1464 g_string_truncate(plain_s, 0);
1466 switch (format[pos]) {
1468 add_string_fmt(SF_NAME, NULL);
1471 add_string_fmt(SF_NUMVAL, NULL);
1474 add_string_fmt(SF_STRVAL, NULL);
1477 g_string_append_c(plain_s, '%');
1479 default: /* Invalid format */
1483 g_string_append_c(plain_s, format[pos]);
1488 if (plain_s->len > 0) {
1489 add_string_fmt(SF_NONE, plain_s->str);
1491 g_string_free(plain_s, TRUE);
1495 /****************************************************************************************
1496 * END OF FIELD EXTRACTION ROUTINES
1497 ****************************************************************************************/
1500 show_print_file_io_error(int err)
1505 cmdarg_err("Not all the packets could be printed because there is "
1506 "no space left on the file system.");
1511 cmdarg_err("Not all the packets could be printed because you are "
1512 "too close to, or over your disk quota.");
1517 cmdarg_err("An error occurred while printing packets: %s.",
1524 * Open/create errors are reported with an console message in Rawshark.
1527 open_failure_message(const char *filename, int err, gboolean for_writing)
1529 fprintf(stderr, "rawshark: ");
1530 fprintf(stderr, file_open_error_message(err, for_writing), filename);
1531 fprintf(stderr, "\n");
1535 raw_cf_open(capture_file *cf, const char *fname)
1537 if ((fd = raw_pipe_open(fname)) < 0)
1540 /* The open succeeded. Fill in the information for this file. */
1542 /* Cleanup all data structures used for dissection. */
1543 cleanup_dissection();
1544 /* Initialize all data structures used for dissection. */
1548 cf->f_datalen = 0; /* not used, but set it anyway */
1550 /* Set the file name because we need it to set the follow stream filter.
1551 XXX - is that still true? We need it for other reasons, though,
1553 cf->filename = g_strdup(fname);
1555 /* Indicate whether it's a permanent or temporary file. */
1556 cf->is_tempfile = FALSE;
1558 /* If it's a temporary capture buffer file, mark it as not saved. */
1559 cf->user_saved = FALSE;
1561 cf->cd_t = WTAP_FILE_UNKNOWN;
1563 cf->drops_known = FALSE;
1565 cf->has_snap = FALSE;
1566 cf->snap = WTAP_MAX_PACKET_SIZE;
1567 nstime_set_zero(&cf->elapsed_time);
1568 nstime_set_unset(&first_ts);
1569 nstime_set_unset(&prev_dis_ts);
1570 nstime_set_unset(&prev_cap_ts);
1577 * General errors are reported with an console message in Rawshark.
1580 failure_message(const char *msg_format, va_list ap)
1582 fprintf(stderr, "rawshark: ");
1583 vfprintf(stderr, msg_format, ap);
1584 fprintf(stderr, "\n");
1588 * Read errors are reported with an console message in Rawshark.
1591 read_failure_message(const char *filename, int err)
1593 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
1594 filename, strerror(err));
1598 * Write errors are reported with an console message in Rawshark.
1601 write_failure_message(const char *filename, int err)
1603 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
1604 filename, strerror(err));
1608 * Report an error in command-line arguments.
1611 cmdarg_err(const char *fmt, ...)
1616 fprintf(stderr, "rawshark: ");
1617 vfprintf(stderr, fmt, ap);
1618 fprintf(stderr, "\n");
1623 * Report additional information for an error in command-line arguments.
1626 cmdarg_err_cont(const char *fmt, ...)
1631 vfprintf(stderr, fmt, ap);
1632 fprintf(stderr, "\n");
1637 /****************************************************************************************************************/
1638 /* other "dummies" */
1640 cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
1642 /* shouldn't happen */
1643 g_assert_not_reached();
1652 * indent-tabs-mode: t
1655 * ex: set shiftwidth=4 tabstop=4 noexpandtab
1656 * :indentSize=4:tabSize=4:noTabs=false: