1 /* Reorder the frames from an input dump file, and write to output dump file.
2 * Martin Mathieson and Jakub Jawadzki
4 * Wireshark - Network traffic analyzer
5 * By Gerald Combs <gerald@wireshark.org>
6 * Copyright 1998 Gerald Combs
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
40 #include <zlib.h> /* to get the libz version number */
45 #ifndef HAVE_GETOPT_LONG
46 #include "wsutil/wsgetopt.h"
49 #include <wsutil/file_util.h>
50 #include <wsutil/crash_info.h>
51 #include <wsutil/ws_version_info.h>
53 /* Show command-line usage */
55 print_usage(FILE *output)
57 fprintf(output, "\n");
58 fprintf(output, "Usage: reordercap [options] <infile> <outfile>\n");
59 fprintf(output, "\n");
60 fprintf(output, "Options:\n");
61 fprintf(output, " -n don't write to output file if the input file is ordered.\n");
62 fprintf(output, " -h display this help and exit.\n");
65 /* Remember where this frame was in the file */
66 typedef struct FrameRecord_t {
74 /**************************************************/
77 /* Enable this symbol to see debug output */
78 /* #define REORDER_DEBUG */
81 #define DEBUG_PRINT printf
83 #define DEBUG_PRINT(...)
85 /**************************************************/
89 frame_write(FrameRecord_t *frame, wtap *wth, wtap_dumper *pdh,
90 struct wtap_pkthdr *phdr, Buffer *buf, const char *infile)
95 DEBUG_PRINT("\nDumping frame (offset=%" G_GINT64_MODIFIER "u)\n",
99 /* Re-read the frame from the stored location */
100 if (!wtap_seek_read(wth, frame->offset, phdr, buf, &err, &err_info)) {
102 /* Print a message noting that the read failed somewhere along the line. */
104 "reordercap: An error occurred while re-reading \"%s\": %s.\n",
105 infile, wtap_strerror(err));
106 if (err_info != NULL) {
107 fprintf(stderr, "(%s)\n", err_info);
114 /* Copy, and set length and timestamp from item. */
115 /* TODO: remove when wtap_seek_read() fills in phdr,
116 including time stamps, for all file types */
117 phdr->ts = frame->time;
119 /* Dump frame to outfile */
120 if (!wtap_dump(pdh, phdr, ws_buffer_start_ptr(buf), &err, &err_info)) {
121 fprintf(stderr, "reordercap: Error (%s) writing frame to outfile\n",
123 if (err_info != NULL) {
124 fprintf(stderr, "(%s)\n", err_info);
131 /* Comparing timestamps between 2 frames.
132 negative if (t1 < t2)
134 positive if (t1 > t2)
137 frames_compare(gconstpointer a, gconstpointer b)
139 const FrameRecord_t *frame1 = *(const FrameRecord_t *const *) a;
140 const FrameRecord_t *frame2 = *(const FrameRecord_t *const *) b;
142 const nstime_t *time1 = &frame1->time;
143 const nstime_t *time2 = &frame2->time;
145 return nstime_cmp(time1, time2);
149 get_reordercap_compiled_info(GString *str)
152 g_string_append(str, ", ");
154 g_string_append(str, "with libz ");
156 g_string_append(str, ZLIB_VERSION);
157 #else /* ZLIB_VERSION */
158 g_string_append(str, "(version unknown)");
159 #endif /* ZLIB_VERSION */
160 #else /* HAVE_LIBZ */
161 g_string_append(str, "without libz");
162 #endif /* HAVE_LIBZ */
166 get_reordercap_runtime_info(GString *str)
169 #if defined(HAVE_LIBZ) && !defined(_WIN32)
170 g_string_append_printf(str, ", with libz %s", zlibVersion());
174 /********************************************************************/
176 /********************************************************************/
178 main(int argc, char *argv[])
180 GString *comp_info_str;
181 GString *runtime_info_str;
183 wtap_dumper *pdh = NULL;
184 struct wtap_pkthdr dump_phdr;
189 const struct wtap_pkthdr *phdr;
190 guint wrong_order_count = 0;
191 gboolean write_output_regardless = TRUE;
193 wtapng_section_t *shb_hdr;
194 wtapng_iface_descriptions_t *idb_inf;
197 FrameRecord_t *prevFrame = NULL;
200 static const struct option long_options[] = {
201 {(char *)"help", no_argument, NULL, 'h'},
202 {(char *)"version", no_argument, NULL, 'v'},
209 /* Get the compile-time version information string */
210 comp_info_str = get_compiled_version_info(NULL, get_reordercap_compiled_info);
212 /* Get the run-time version information string */
213 runtime_info_str = get_runtime_version_info(get_reordercap_runtime_info);
215 /* Add it to the information to be reported on a crash. */
216 ws_add_crash_info("Reordercap (Wireshark) %s\n"
221 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
223 /* Process the options first */
224 while ((opt = getopt_long(argc, argv, "hnv", long_options, NULL)) != -1) {
227 write_output_regardless = FALSE;
230 printf("Reordercap (Wireshark) %s\n"
231 "Reorder timestamps of input file frames into output file.\n"
232 "See http://www.wireshark.org for more information.\n",
233 get_ws_vcs_version_info());
237 show_version("Reordercap (Wireshark)", comp_info_str, runtime_info_str);
238 g_string_free(comp_info_str, TRUE);
239 g_string_free(runtime_info_str, TRUE);
247 /* Remaining args are file names */
248 file_count = argc - optind;
249 if (file_count == 2) {
250 infile = argv[optind];
251 outfile = argv[optind+1];
259 /* TODO: if reordercap is ever changed to give the user a choice of which
260 open_routine reader to use, then the following needs to change. */
261 wth = wtap_open_offline(infile, WTAP_TYPE_AUTO, &err, &err_info, TRUE);
263 fprintf(stderr, "reordercap: Can't open %s: %s\n", infile,
265 if (err_info != NULL) {
266 fprintf(stderr, "(%s)\n", err_info);
271 DEBUG_PRINT("file_type_subtype is %u\n", wtap_file_type_subtype(wth));
273 shb_hdr = wtap_file_get_shb_info(wth);
274 idb_inf = wtap_file_get_idb_info(wth);
276 /* Open outfile (same filetype/encap as input file) */
277 pdh = wtap_dump_open_ng(outfile, wtap_file_type_subtype(wth), wtap_file_encap(wth),
278 65535, FALSE, shb_hdr, idb_inf, &err);
281 fprintf(stderr, "reordercap: Failed to open output file: (%s) - error %s\n",
282 outfile, wtap_strerror(err));
287 /* Allocate the array of frame pointers. */
288 frames = g_ptr_array_new();
290 /* Read each frame from infile */
291 while (wtap_read(wth, &err, &err_info, &data_offset)) {
292 FrameRecord_t *newFrameRecord;
294 phdr = wtap_phdr(wth);
296 newFrameRecord = g_slice_new(FrameRecord_t);
297 newFrameRecord->num = frames->len + 1;
298 newFrameRecord->offset = data_offset;
299 if (phdr->presence_flags & WTAP_HAS_TS) {
300 newFrameRecord->time = phdr->ts;
302 nstime_set_unset(&newFrameRecord->time);
305 if (prevFrame && frames_compare(&newFrameRecord, &prevFrame) < 0) {
309 g_ptr_array_add(frames, newFrameRecord);
310 prevFrame = newFrameRecord;
313 /* Print a message noting that the read failed somewhere along the line. */
315 "reordercap: An error occurred while reading \"%s\": %s.\n",
316 infile, wtap_strerror(err));
317 if (err_info != NULL) {
318 fprintf(stderr, "(%s)\n", err_info);
323 printf("%u frames, %u out of order\n", frames->len, wrong_order_count);
325 /* Sort the frames */
326 if (wrong_order_count > 0) {
327 g_ptr_array_sort(frames, frames_compare);
330 /* Write out each sorted frame in turn */
331 wtap_phdr_init(&dump_phdr);
332 ws_buffer_init(&buf, 1500);
333 for (i = 0; i < frames->len; i++) {
334 FrameRecord_t *frame = (FrameRecord_t *)frames->pdata[i];
336 /* Avoid writing if already sorted and configured to */
337 if (write_output_regardless || (wrong_order_count > 0)) {
338 frame_write(frame, wth, pdh, &dump_phdr, &buf, infile);
340 g_slice_free(FrameRecord_t, frame);
342 wtap_phdr_cleanup(&dump_phdr);
343 ws_buffer_free(&buf);
345 if (!write_output_regardless && (wrong_order_count == 0)) {
346 printf("Not writing output file because input file is already in order!\n");
349 /* Free the whole array */
350 g_ptr_array_free(frames, TRUE);
353 if (!wtap_dump_close(pdh, &err)) {
354 fprintf(stderr, "reordercap: Error closing %s: %s\n", outfile,
361 /* Finally, close infile */
368 * Editor modelines - http://www.wireshark.org/tools/modelines.html
373 * indent-tabs-mode: nil
376 * vi: set shiftwidth=4 tabstop=8 expandtab:
377 * :indentSize=4:tabSize=8:noTabs=true: