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 */
46 #include "wsutil/wsgetopt.h"
49 #include <wsutil/file_util.h>
50 #include <wsutil/crash_info.h>
51 #include <wsutil/copyright_info.h>
52 #include <wsutil/os_version_info.h>
53 #include <wsutil/ws_version_info.h>
55 #include "version_info.h"
58 show_version(GString *comp_info_str, GString *runtime_info_str)
60 printf("Reordercap (Wireshark) %s\n"
67 get_ws_vcs_version_info(), get_copyright_info(),
68 comp_info_str->str, runtime_info_str->str);
71 /* Show command-line usage */
73 print_usage(FILE *output)
75 fprintf(output, "\n");
76 fprintf(output, "Usage: reordercap [options] <infile> <outfile>\n");
77 fprintf(output, "\n");
78 fprintf(output, "Options:\n");
79 fprintf(output, " -n don't write to output file if the input file is ordered.\n");
80 fprintf(output, " -h display this help and exit.\n");
83 /* Remember where this frame was in the file */
84 typedef struct FrameRecord_t {
92 /**************************************************/
95 /* Enable this symbol to see debug output */
96 /* #define REORDER_DEBUG */
99 #define DEBUG_PRINT printf
101 #define DEBUG_PRINT(...)
103 /**************************************************/
107 frame_write(FrameRecord_t *frame, wtap *wth, wtap_dumper *pdh,
108 struct wtap_pkthdr *phdr, Buffer *buf, const char *infile)
113 DEBUG_PRINT("\nDumping frame (offset=%" G_GINT64_MODIFIER "u)\n",
117 /* Re-read the frame from the stored location */
118 if (!wtap_seek_read(wth, frame->offset, phdr, buf, &err, &err_info)) {
120 /* Print a message noting that the read failed somewhere along the line. */
122 "reordercap: An error occurred while re-reading \"%s\": %s.\n",
123 infile, wtap_strerror(err));
126 case WTAP_ERR_UNSUPPORTED:
127 case WTAP_ERR_UNWRITABLE_ENCAP:
128 case WTAP_ERR_BAD_FILE:
129 fprintf(stderr, "(%s)\n", err_info);
137 /* Copy, and set length and timestamp from item. */
138 /* TODO: remove when wtap_seek_read() fills in phdr,
139 including time stamps, for all file types */
140 phdr->ts = frame->time;
142 /* Dump frame to outfile */
143 if (!wtap_dump(pdh, phdr, ws_buffer_start_ptr(buf), &err)) {
144 fprintf(stderr, "reordercap: Error (%s) writing frame to outfile\n",
150 /* Comparing timestamps between 2 frames.
151 negative if (t1 < t2)
153 positive if (t1 > t2)
156 frames_compare(gconstpointer a, gconstpointer b)
158 const FrameRecord_t *frame1 = *(const FrameRecord_t *const *) a;
159 const FrameRecord_t *frame2 = *(const FrameRecord_t *const *) b;
161 const nstime_t *time1 = &frame1->time;
162 const nstime_t *time2 = &frame2->time;
164 return nstime_cmp(time1, time2);
168 get_reordercap_compiled_info(GString *str)
171 g_string_append(str, ", ");
173 g_string_append(str, "with libz ");
175 g_string_append(str, ZLIB_VERSION);
176 #else /* ZLIB_VERSION */
177 g_string_append(str, "(version unknown)");
178 #endif /* ZLIB_VERSION */
179 #else /* HAVE_LIBZ */
180 g_string_append(str, "without libz");
181 #endif /* HAVE_LIBZ */
185 get_reordercap_runtime_info(GString *str)
188 #if defined(HAVE_LIBZ) && !defined(_WIN32)
189 g_string_append_printf(str, ", with libz %s", zlibVersion());
193 /********************************************************************/
195 /********************************************************************/
197 main(int argc, char *argv[])
199 GString *comp_info_str;
200 GString *runtime_info_str;
202 wtap_dumper *pdh = NULL;
203 struct wtap_pkthdr dump_phdr;
208 const struct wtap_pkthdr *phdr;
209 guint wrong_order_count = 0;
210 gboolean write_output_regardless = TRUE;
212 wtapng_section_t *shb_hdr;
213 wtapng_iface_descriptions_t *idb_inf;
216 FrameRecord_t *prevFrame = NULL;
219 static const struct option long_options[] = {
220 {(char *)"help", no_argument, NULL, 'h'},
221 {(char *)"version", no_argument, NULL, 'v'},
228 /* Assemble the compile-time version information string */
229 comp_info_str = g_string_new("Compiled ");
230 get_compiled_version_info(comp_info_str, NULL, get_reordercap_compiled_info);
232 /* Assemble the run-time version information string */
233 runtime_info_str = g_string_new("Running ");
234 get_runtime_version_info(runtime_info_str, get_reordercap_runtime_info);
236 /* Add it to the information to be reported on a crash. */
237 ws_add_crash_info("Reordercap (Wireshark) %s\n"
242 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
244 /* Process the options first */
245 while ((opt = getopt_long(argc, argv, "hnv", long_options, NULL)) != -1) {
248 write_output_regardless = FALSE;
251 printf("Reordercap (Wireshark) %s\n"
252 "Reorder timestamps of input file frames into output file.\n"
253 "See http://www.wireshark.org for more information.\n",
254 get_ws_vcs_version_info());
258 show_version(comp_info_str, runtime_info_str);
259 g_string_free(comp_info_str, TRUE);
260 g_string_free(runtime_info_str, TRUE);
268 /* Remaining args are file names */
269 file_count = argc - optind;
270 if (file_count == 2) {
271 infile = argv[optind];
272 outfile = argv[optind+1];
280 /* TODO: if reordercap is ever changed to give the user a choice of which
281 open_routine reader to use, then the following needs to change. */
282 wth = wtap_open_offline(infile, WTAP_TYPE_AUTO, &err, &err_info, TRUE);
284 fprintf(stderr, "reordercap: Can't open %s: %s\n", infile,
288 case WTAP_ERR_UNSUPPORTED:
289 case WTAP_ERR_UNWRITABLE_ENCAP:
290 case WTAP_ERR_BAD_FILE:
291 fprintf(stderr, "(%s)\n", err_info);
297 DEBUG_PRINT("file_type_subtype is %u\n", wtap_file_type_subtype(wth));
299 shb_hdr = wtap_file_get_shb_info(wth);
300 idb_inf = wtap_file_get_idb_info(wth);
302 /* Open outfile (same filetype/encap as input file) */
303 pdh = wtap_dump_open_ng(outfile, wtap_file_type_subtype(wth), wtap_file_encap(wth),
304 65535, FALSE, shb_hdr, idb_inf, &err);
307 fprintf(stderr, "reordercap: Failed to open output file: (%s) - error %s\n",
308 outfile, wtap_strerror(err));
313 /* Allocate the array of frame pointers. */
314 frames = g_ptr_array_new();
316 /* Read each frame from infile */
317 while (wtap_read(wth, &err, &err_info, &data_offset)) {
318 FrameRecord_t *newFrameRecord;
320 phdr = wtap_phdr(wth);
322 newFrameRecord = g_slice_new(FrameRecord_t);
323 newFrameRecord->num = frames->len + 1;
324 newFrameRecord->offset = data_offset;
325 if (phdr->presence_flags & WTAP_HAS_TS) {
326 newFrameRecord->time = phdr->ts;
328 nstime_set_unset(&newFrameRecord->time);
331 if (prevFrame && frames_compare(&newFrameRecord, &prevFrame) < 0) {
335 g_ptr_array_add(frames, newFrameRecord);
336 prevFrame = newFrameRecord;
339 /* Print a message noting that the read failed somewhere along the line. */
341 "reordercap: An error occurred while reading \"%s\": %s.\n",
342 infile, wtap_strerror(err));
345 case WTAP_ERR_UNSUPPORTED:
346 case WTAP_ERR_UNWRITABLE_ENCAP:
347 case WTAP_ERR_BAD_FILE:
348 fprintf(stderr, "(%s)\n", err_info);
354 printf("%u frames, %u out of order\n", frames->len, wrong_order_count);
356 /* Sort the frames */
357 if (wrong_order_count > 0) {
358 g_ptr_array_sort(frames, frames_compare);
361 /* Write out each sorted frame in turn */
362 wtap_phdr_init(&dump_phdr);
363 ws_buffer_init(&buf, 1500);
364 for (i = 0; i < frames->len; i++) {
365 FrameRecord_t *frame = (FrameRecord_t *)frames->pdata[i];
367 /* Avoid writing if already sorted and configured to */
368 if (write_output_regardless || (wrong_order_count > 0)) {
369 frame_write(frame, wth, pdh, &dump_phdr, &buf, infile);
371 g_slice_free(FrameRecord_t, frame);
373 wtap_phdr_cleanup(&dump_phdr);
374 ws_buffer_free(&buf);
376 if (!write_output_regardless && (wrong_order_count == 0)) {
377 printf("Not writing output file because input file is already in order!\n");
380 /* Free the whole array */
381 g_ptr_array_free(frames, TRUE);
384 if (!wtap_dump_close(pdh, &err)) {
385 fprintf(stderr, "reordercap: Error closing %s: %s\n", outfile,
392 /* Finally, close infile */
399 * Editor modelines - http://www.wireshark.org/tools/modelines.html
404 * indent-tabs-mode: nil
407 * vi: set shiftwidth=4 tabstop=8 expandtab:
408 * :indentSize=4:tabSize=8:noTabs=true: