| File: | builds/wireshark/wireshark/editcap.c |
| Warning: | line 827, column 5 Value stored to 'caplen' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* editcap.c |
| 2 | * Edit capture files. We can delete packets, adjust timestamps, or |
| 3 | * simply convert from one format to another format. |
| 4 | * |
| 5 | * Originally written by Richard Sharpe. |
| 6 | * Improved by Guy Harris. |
| 7 | * Further improved by Richard Sharpe. |
| 8 | * |
| 9 | * Copyright 2013, Richard Sharpe <realrichardsharpe[AT]gmail.com> |
| 10 | * |
| 11 | * Wireshark - Network traffic analyzer |
| 12 | * By Gerald Combs <[email protected]> |
| 13 | * Copyright 1998 Gerald Combs |
| 14 | * |
| 15 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 16 | */ |
| 17 | |
| 18 | #include <config.h> |
| 19 | #define WS_LOG_DOMAIN"Main" LOG_DOMAIN_MAIN"Main" |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <stdarg.h> |
| 25 | #include <math.h> |
| 26 | #include <stddef.h> |
| 27 | |
| 28 | #include <time.h> |
| 29 | #include <glib.h> |
| 30 | #include <gcrypt.h> |
| 31 | |
| 32 | #ifdef HAVE_UNISTD_H1 |
| 33 | #include <unistd.h> |
| 34 | #endif |
| 35 | |
| 36 | #include <ws_exit_codes.h> |
| 37 | #include <wsutil/ws_getopt.h> |
| 38 | |
| 39 | #include <wiretap/secrets-types.h> |
| 40 | #include <wiretap/wtap.h> |
| 41 | |
| 42 | #include "epan/etypes.h" |
| 43 | #include "epan/dissectors/packet-ieee80211-radiotap-defs.h" |
| 44 | |
| 45 | #ifdef _WIN32 |
| 46 | #include <process.h> /* getpid */ |
| 47 | #include <winsock2.h> |
| 48 | #endif |
| 49 | |
| 50 | #include <wsutil/clopts_common.h> |
| 51 | #include <wsutil/cmdarg_err.h> |
| 52 | #include <wsutil/filesystem.h> |
| 53 | #include <wsutil/file_util.h> |
| 54 | #include <wsutil/plugins.h> |
| 55 | #include <wsutil/privileges.h> |
| 56 | #include <wsutil/strnatcmp.h> |
| 57 | #include <wsutil/str_util.h> |
| 58 | #include <cli_main.h> |
| 59 | #include <wsutil/version_info.h> |
| 60 | #include <wsutil/pint.h> |
| 61 | #include <wsutil/strtoi.h> |
| 62 | #include <wsutil/ws_assert.h> |
| 63 | #include <wsutil/wslog.h> |
| 64 | #include <wiretap/wtap_opttypes.h> |
| 65 | |
| 66 | #include "ui/failure_message.h" |
| 67 | |
| 68 | #include "ringbuffer.h" /* For RINGBUFFER_MAX_NUM_FILES */ |
| 69 | |
| 70 | /* Additional exit codes */ |
| 71 | #define CANT_EXTRACT_PREFIX2 2 |
| 72 | #define WRITE_ERROR2 2 |
| 73 | #define DUMP_ERROR2 2 |
| 74 | |
| 75 | #define NANOSECS_PER_SEC1000000000 1000000000 |
| 76 | |
| 77 | /* |
| 78 | * Some globals so we can pass things to various routines |
| 79 | */ |
| 80 | |
| 81 | struct select_item { |
| 82 | bool_Bool inclusive; |
| 83 | uint64_t first, second; |
| 84 | }; |
| 85 | |
| 86 | /* |
| 87 | * Duplicate frame detection |
| 88 | */ |
| 89 | typedef struct _fd_hash_t { |
| 90 | uint8_t digest[16]; |
| 91 | uint32_t len; |
| 92 | nstime_t frame_time; |
| 93 | } fd_hash_t; |
| 94 | |
| 95 | #define DEFAULT_DUP_DEPTH5 5 /* Used with -d */ |
| 96 | #define MAX_DUP_DEPTH1000000 1000000 /* the maximum window (and actual size of fd_hash[]) for de-duplication */ |
| 97 | |
| 98 | static fd_hash_t fd_hash[MAX_DUP_DEPTH1000000]; |
| 99 | static int dup_window = DEFAULT_DUP_DEPTH5; |
| 100 | static int cur_dup_entry; |
| 101 | |
| 102 | static uint32_t ignored_bytes; /* Used with -I */ |
| 103 | |
| 104 | #define ONE_BILLION1000000000 1000000000 |
| 105 | |
| 106 | /* Weights of different errors we can introduce */ |
| 107 | /* We should probably make these command-line arguments */ |
| 108 | /* XXX - Should we add a bit-level error? */ |
| 109 | #define ERR_WT_BIT5 5 /* Flip a random bit */ |
| 110 | #define ERR_WT_BYTE5 5 /* Substitute a random byte */ |
| 111 | #define ERR_WT_ALNUM5 5 /* Substitute a random character in [A-Za-z0-9] */ |
| 112 | #define ERR_WT_FMT2 2 /* Substitute "%s" */ |
| 113 | #define ERR_WT_AA1 1 /* Fill the remainder of the buffer with 0xAA */ |
| 114 | #define ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1) (ERR_WT_BIT5 + ERR_WT_BYTE5 + ERR_WT_ALNUM5 + ERR_WT_FMT2 + ERR_WT_AA1) |
| 115 | |
| 116 | #define ALNUM_CHARS"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" |
| 117 | #define ALNUM_LEN(sizeof("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" ) - 1) (sizeof(ALNUM_CHARS"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") - 1) |
| 118 | |
| 119 | struct time_adjustment { |
| 120 | nstime_t tv; |
| 121 | int is_negative; |
| 122 | }; |
| 123 | |
| 124 | typedef struct _chop_t { |
| 125 | int len_begin; |
| 126 | int off_begin_pos; |
| 127 | int off_begin_neg; |
| 128 | int len_end; |
| 129 | int off_end_pos; |
| 130 | int off_end_neg; |
| 131 | } chop_t; |
| 132 | |
| 133 | |
| 134 | /* Table of user comments */ |
| 135 | GTree *frames_user_comments; |
| 136 | GPtrArray *capture_comments; |
| 137 | |
| 138 | #define MAX_SELECTIONS512 512 |
| 139 | static struct select_item selectfrm[MAX_SELECTIONS512]; |
| 140 | static unsigned max_selected; |
| 141 | static bool_Bool keep_em; |
| 142 | static int out_file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_UNKNOWN-1; |
| 143 | static int out_frame_type = -2; /* Leave frame type alone */ |
| 144 | static bool_Bool verbose; /* Not so verbose */ |
| 145 | static struct time_adjustment time_adj; /* no adjustment */ |
| 146 | static nstime_t relative_time_window; /* de-dup time window */ |
| 147 | static double err_prob = -1.0; |
| 148 | static nstime_t starttime; |
| 149 | static bool_Bool have_starttime; |
| 150 | static nstime_t stoptime; |
| 151 | static bool_Bool have_stoptime; |
| 152 | static bool_Bool check_startstop; |
| 153 | static bool_Bool rem_vlan; |
| 154 | static bool_Bool dup_detect; |
| 155 | static bool_Bool dup_detect_by_time; |
| 156 | static bool_Bool skip_radiotap; |
| 157 | static bool_Bool discard_all_secrets; |
| 158 | static bool_Bool discard_cap_comments; |
| 159 | static bool_Bool set_unused; |
| 160 | static bool_Bool discard_pkt_comments; |
| 161 | static bool_Bool do_extract_secrets; |
| 162 | |
| 163 | static int do_strict_time_adjustment; |
| 164 | static struct time_adjustment strict_time_adj; /* strict time adjustment */ |
| 165 | static nstime_t previous_time; /* previous time */ |
| 166 | |
| 167 | static const struct { |
| 168 | const char *str; |
| 169 | uint32_t id; |
| 170 | } secrets_types[] = { |
| 171 | { "tls", SECRETS_TYPE_TLS0x544c534b }, |
| 172 | { "ssh", SECRETS_TYPE_SSH0x5353484b }, |
| 173 | { "wg", SECRETS_TYPE_WIREGUARD0x57474b4c }, |
| 174 | { "opcua", SECRETS_TYPE_OPCUA0x55414b4c }, |
| 175 | }; |
| 176 | |
| 177 | static unsigned find_dct2000_real_data(const uint8_t *buf); |
| 178 | static void handle_chopping(chop_t chop, wtap_packet_header *phdr, |
| 179 | uint8_t **buf, bool_Bool adjlen); |
| 180 | |
| 181 | static char * |
| 182 | abs_time_to_str_with_sec_resolution(const nstime_t *abs_time) |
| 183 | { |
| 184 | struct tm *tmp; |
| 185 | char *buf = (char *)g_malloc(16); |
| 186 | |
| 187 | tmp = localtime(&abs_time->secs); |
| 188 | |
| 189 | if (tmp) { |
| 190 | snprintf(buf, 16, "%d%02d%02d%02d%02d%02d", |
| 191 | tmp->tm_year + 1900, |
| 192 | tmp->tm_mon+1, |
| 193 | tmp->tm_mday, |
| 194 | tmp->tm_hour, |
| 195 | tmp->tm_min, |
| 196 | tmp->tm_sec); |
| 197 | } else { |
| 198 | buf[0] = '\0'; |
| 199 | } |
| 200 | |
| 201 | return buf; |
| 202 | } |
| 203 | |
| 204 | static char * |
| 205 | fileset_get_filename_by_pattern(unsigned idx, const nstime_t *ts, |
| 206 | char *fprefix, char *fsuffix) |
| 207 | { |
| 208 | char filenum[5+1]; |
| 209 | char *timestr; |
| 210 | char *abs_str; |
| 211 | |
| 212 | snprintf(filenum, sizeof(filenum), "%05u", idx % RINGBUFFER_MAX_NUM_FILES100000); |
| 213 | if (ts) { |
| 214 | timestr = abs_time_to_str_with_sec_resolution(ts); |
| 215 | abs_str = g_strconcat(fprefix, "_", filenum, "_", timestr, fsuffix, NULL((void*)0)); |
| 216 | g_free(timestr); |
| 217 | } else |
| 218 | abs_str = g_strconcat(fprefix, "_", filenum, fsuffix, NULL((void*)0)); |
| 219 | |
| 220 | return abs_str; |
| 221 | } |
| 222 | |
| 223 | static bool_Bool |
| 224 | fileset_extract_prefix_suffix(const char *fname, char **fprefix, char **fsuffix, wtap_compression_type *compression_typep) |
| 225 | { |
| 226 | char *pfx, *last_pathsep; |
| 227 | char *save_file; |
| 228 | wtap_compression_type compression_type; |
| 229 | |
| 230 | save_file = g_strdup(fname)g_strdup_inline (fname); |
| 231 | if (save_file == NULL((void*)0)) { |
| 232 | fprintf(stderrstderr, "editcap: Out of memory\n"); |
| 233 | return false0; |
| 234 | } |
| 235 | |
| 236 | last_pathsep = strrchr(save_file, G_DIR_SEPARATOR'/'); |
| 237 | if (last_pathsep == NULL((void*)0)) { |
| 238 | last_pathsep = save_file; |
| 239 | } |
| 240 | pfx = strrchr(last_pathsep, '.'); |
| 241 | if (pfx != NULL((void*)0)) { |
| 242 | /* The pathname has a "." in it, and it's in the last component |
| 243 | * of the pathname (because there is either only one component, |
| 244 | * i.e. last_pathsep is null as there are no path separators, |
| 245 | * or the "." is after the path separator before the last |
| 246 | * component. |
| 247 | |
| 248 | * Treat it as a separator between the rest of the file name and |
| 249 | * the file name suffix, and arrange that the names given to the |
| 250 | * ring buffer files have the specified suffix, i.e. put the |
| 251 | * changing part of the name *before* the suffix. */ |
| 252 | pfx[0] = '\0'; |
| 253 | compression_type = wtap_extension_to_compression_type(pfx + 1); |
| 254 | if (compression_type != WTAP_UNKNOWN_COMPRESSION) { |
| 255 | char *pfx2 = strrchr(last_pathsep, '.'); |
| 256 | if (pfx2 != NULL((void*)0)) { |
| 257 | pfx[0] = '.'; |
| 258 | pfx = pfx2; |
| 259 | pfx[0] = '\0'; |
| 260 | } |
| 261 | if (compression_typep && *compression_typep == WTAP_UNKNOWN_COMPRESSION) { |
| 262 | *compression_typep = compression_type; |
| 263 | } |
| 264 | /* XXX - What if there's an extension matching a compression type |
| 265 | * and the passed in compression type is known but something else? |
| 266 | */ |
| 267 | } |
| 268 | *fprefix = g_strdup(save_file)g_strdup_inline (save_file); |
| 269 | pfx[0] = '.'; /* restore capfile_name */ |
| 270 | *fsuffix = g_strdup(pfx)g_strdup_inline (pfx); |
| 271 | } else { |
| 272 | /* Either there's no "." in the pathname, or it's in a directory |
| 273 | * component, so the last component has no suffix. */ |
| 274 | *fprefix = g_strdup(save_file)g_strdup_inline (save_file); |
| 275 | *fsuffix = NULL((void*)0); |
| 276 | } |
| 277 | g_free(save_file); |
| 278 | return true1; |
| 279 | } |
| 280 | |
| 281 | /* Add a selection item, a simple parser for now */ |
| 282 | static bool_Bool |
| 283 | add_selection(char *sel, uint64_t* max_selection) |
| 284 | { |
| 285 | char *locn; |
| 286 | char *next; |
| 287 | |
| 288 | if (max_selected >= MAX_SELECTIONS512) { |
| 289 | /* Let the user know we stopped selecting */ |
| 290 | fprintf(stderrstderr, "Out of room for packet selections.\n"); |
| 291 | return false0; |
| 292 | } |
| 293 | |
| 294 | if (verbose) |
| 295 | fprintf(stderrstderr, "Add_Selected: %s\n", sel); |
| 296 | |
| 297 | if ((locn = strchr(sel, '-')) == NULL((void*)0)) { /* No dash, so a single number? */ |
| 298 | if (verbose) |
| 299 | fprintf(stderrstderr, "Not inclusive ..."); |
| 300 | |
| 301 | selectfrm[max_selected].inclusive = false0; |
| 302 | selectfrm[max_selected].first = get_uint64(sel, "packet number"); |
| 303 | if (selectfrm[max_selected].first > *max_selection) |
| 304 | *max_selection = selectfrm[max_selected].first; |
| 305 | |
| 306 | if (verbose) |
| 307 | fprintf(stderrstderr, " %" PRIu64"l" "u" "\n", selectfrm[max_selected].first); |
| 308 | } else { |
| 309 | if (verbose) |
| 310 | fprintf(stderrstderr, "Inclusive ..."); |
| 311 | |
| 312 | *locn = '\0'; /* split the range */ |
| 313 | next = locn + 1; |
| 314 | selectfrm[max_selected].inclusive = true1; |
| 315 | selectfrm[max_selected].first = get_uint64(sel, "beginning of packet range"); |
| 316 | selectfrm[max_selected].second = get_uint64(next, "end of packet range"); |
| 317 | |
| 318 | if (selectfrm[max_selected].second == 0) |
| 319 | { |
| 320 | /* Not a valid number, presume all */ |
| 321 | selectfrm[max_selected].second = *max_selection = UINT64_MAX(18446744073709551615UL); |
| 322 | } |
| 323 | else if (selectfrm[max_selected].second > *max_selection) |
| 324 | *max_selection = selectfrm[max_selected].second; |
| 325 | |
| 326 | if (verbose) |
| 327 | fprintf(stderrstderr, " %" PRIu64"l" "u" ", %" PRIu64"l" "u" "\n", selectfrm[max_selected].first, |
| 328 | selectfrm[max_selected].second); |
| 329 | } |
| 330 | |
| 331 | max_selected++; |
| 332 | return true1; |
| 333 | } |
| 334 | |
| 335 | /* Was the packet selected? */ |
| 336 | |
| 337 | static bool_Bool |
| 338 | selected(uint64_t recno) |
| 339 | { |
| 340 | unsigned i; |
| 341 | |
| 342 | for (i = 0; i < max_selected; i++) { |
| 343 | if (selectfrm[i].inclusive) { |
| 344 | if (selectfrm[i].first <= recno && selectfrm[i].second >= recno) |
| 345 | return true1; |
| 346 | } else { |
| 347 | if (recno == selectfrm[i].first) |
| 348 | return true1; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | return false0; |
| 353 | } |
| 354 | |
| 355 | static bool_Bool |
| 356 | set_time_adjustment(char *optarg_str_p) |
| 357 | { |
| 358 | char *frac, *end; |
| 359 | long val; |
| 360 | size_t frac_digits; |
| 361 | |
| 362 | if (!optarg_str_p) |
| 363 | return true1; |
| 364 | |
| 365 | /* skip leading whitespace */ |
| 366 | while (*optarg_str_p == ' ' || *optarg_str_p == '\t') |
| 367 | optarg_str_p++; |
| 368 | |
| 369 | /* check for a negative adjustment */ |
| 370 | if (*optarg_str_p == '-') { |
| 371 | time_adj.is_negative = 1; |
| 372 | optarg_str_p++; |
| 373 | } |
| 374 | |
| 375 | /* collect whole number of seconds, if any */ |
| 376 | if (*optarg_str_p == '.') { /* only fractional (i.e., .5 is ok) */ |
| 377 | val = 0; |
| 378 | frac = optarg_str_p; |
| 379 | } else { |
| 380 | val = strtol(optarg_str_p, &frac, 10); |
| 381 | if (frac == NULL((void*)0) || frac == optarg_str_p |
| 382 | || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 383 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 384 | optarg_str_p); |
| 385 | return false0; |
| 386 | } |
| 387 | if (val < 0) { /* implies '--' since we caught '-' above */ |
| 388 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 389 | optarg_str_p); |
| 390 | return false0; |
| 391 | } |
| 392 | } |
| 393 | time_adj.tv.secs = val; |
| 394 | |
| 395 | /* now collect the partial seconds, if any */ |
| 396 | if (*frac != '\0') { /* chars left, so get fractional part */ |
| 397 | val = strtol(&(frac[1]), &end, 10); |
| 398 | /* if more than 9 fractional digits truncate to 9 */ |
| 399 | if ((end - &(frac[1])) > 9) { |
| 400 | frac[10] = 't'; /* 't' for truncate */ |
| 401 | val = strtol(&(frac[1]), &end, 10); |
| 402 | } |
| 403 | if (*frac != '.' || end == NULL((void*)0) || end == frac || val < 0 |
| 404 | || val >= ONE_BILLION1000000000 || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 405 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 406 | optarg_str_p); |
| 407 | return false0; |
| 408 | } |
| 409 | } else { |
| 410 | return true1; /* no fractional digits */ |
| 411 | } |
| 412 | |
| 413 | /* adjust fractional portion from fractional to numerator |
| 414 | * e.g., in "1.5" from 5 to 500000000 since .5*10^9 = 500000000 */ |
| 415 | frac_digits = end - frac - 1; /* fractional digit count (remember '.') */ |
| 416 | while(frac_digits < 9) { /* this is frac of 10^9 */ |
| 417 | val *= 10; |
| 418 | frac_digits++; |
| 419 | } |
| 420 | |
| 421 | time_adj.tv.nsecs = (int)val; |
| 422 | return true1; |
| 423 | } |
| 424 | |
| 425 | static bool_Bool |
| 426 | set_strict_time_adj(char *optarg_str_p) |
| 427 | { |
| 428 | char *frac, *end; |
| 429 | long val; |
| 430 | size_t frac_digits; |
| 431 | |
| 432 | if (!optarg_str_p) |
| 433 | return true1; |
| 434 | |
| 435 | /* skip leading whitespace */ |
| 436 | while (*optarg_str_p == ' ' || *optarg_str_p == '\t') |
| 437 | optarg_str_p++; |
| 438 | |
| 439 | /* |
| 440 | * check for a negative adjustment |
| 441 | * A negative strict adjustment value is a flag |
| 442 | * to adjust all frames by the specified delta time. |
| 443 | */ |
| 444 | if (*optarg_str_p == '-') { |
| 445 | strict_time_adj.is_negative = 1; |
| 446 | optarg_str_p++; |
| 447 | } |
| 448 | |
| 449 | /* collect whole number of seconds, if any */ |
| 450 | if (*optarg_str_p == '.') { /* only fractional (i.e., .5 is ok) */ |
| 451 | val = 0; |
| 452 | frac = optarg_str_p; |
| 453 | } else { |
| 454 | val = strtol(optarg_str_p, &frac, 10); |
| 455 | if (frac == NULL((void*)0) || frac == optarg_str_p |
| 456 | || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 457 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 458 | optarg_str_p); |
| 459 | return false0; |
| 460 | } |
| 461 | if (val < 0) { /* implies '--' since we caught '-' above */ |
| 462 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 463 | optarg_str_p); |
| 464 | return false0; |
| 465 | } |
| 466 | } |
| 467 | strict_time_adj.tv.secs = val; |
| 468 | |
| 469 | /* now collect the partial seconds, if any */ |
| 470 | if (*frac != '\0') { /* chars left, so get fractional part */ |
| 471 | val = strtol(&(frac[1]), &end, 10); |
| 472 | /* if more than 9 fractional digits truncate to 9 */ |
| 473 | if ((end - &(frac[1])) > 9) { |
| 474 | frac[10] = 't'; /* 't' for truncate */ |
| 475 | val = strtol(&(frac[1]), &end, 10); |
| 476 | } |
| 477 | if (*frac != '.' || end == NULL((void*)0) || end == frac || val < 0 |
| 478 | || val >= ONE_BILLION1000000000 || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 479 | fprintf(stderrstderr, "editcap: \"%s\" isn't a valid time adjustment\n", |
| 480 | optarg_str_p); |
| 481 | return false0; |
| 482 | } |
| 483 | } else { |
| 484 | return true1; /* no fractional digits */ |
| 485 | } |
| 486 | |
| 487 | /* adjust fractional portion from fractional to numerator |
| 488 | * e.g., in "1.5" from 5 to 500000000 since .5*10^9 = 500000000 */ |
| 489 | frac_digits = end - frac - 1; /* fractional digit count (remember '.') */ |
| 490 | while(frac_digits < 9) { /* this is frac of 10^9 */ |
| 491 | val *= 10; |
| 492 | frac_digits++; |
| 493 | } |
| 494 | |
| 495 | strict_time_adj.tv.nsecs = (int)val; |
| 496 | return true1; |
| 497 | } |
| 498 | |
| 499 | static bool_Bool |
| 500 | set_rel_time(char *optarg_str_p) |
| 501 | { |
| 502 | char *frac, *end; |
| 503 | long val; |
| 504 | size_t frac_digits; |
| 505 | |
| 506 | if (!optarg_str_p) |
| 507 | return true1; |
| 508 | |
| 509 | /* skip leading whitespace */ |
| 510 | while (*optarg_str_p == ' ' || *optarg_str_p == '\t') |
| 511 | optarg_str_p++; |
| 512 | |
| 513 | /* ignore negative adjustment */ |
| 514 | if (*optarg_str_p == '-') |
| 515 | optarg_str_p++; |
| 516 | |
| 517 | /* collect whole number of seconds, if any */ |
| 518 | if (*optarg_str_p == '.') { /* only fractional (i.e., .5 is ok) */ |
| 519 | val = 0; |
| 520 | frac = optarg_str_p; |
| 521 | } else { |
| 522 | val = strtol(optarg_str_p, &frac, 10); |
| 523 | if (frac == NULL((void*)0) || frac == optarg_str_p |
| 524 | || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 525 | fprintf(stderrstderr, "1: editcap: \"%s\" isn't a valid rel time value\n", |
| 526 | optarg_str_p); |
| 527 | return false0; |
| 528 | } |
| 529 | if (val < 0) { /* implies '--' since we caught '-' above */ |
| 530 | fprintf(stderrstderr, "2: editcap: \"%s\" isn't a valid rel time value\n", |
| 531 | optarg_str_p); |
| 532 | return false0; |
| 533 | } |
| 534 | } |
| 535 | relative_time_window.secs = val; |
| 536 | |
| 537 | /* now collect the partial seconds, if any */ |
| 538 | if (*frac != '\0') { /* chars left, so get fractional part */ |
| 539 | val = strtol(&(frac[1]), &end, 10); |
| 540 | /* if more than 9 fractional digits truncate to 9 */ |
| 541 | if ((end - &(frac[1])) > 9) { |
| 542 | frac[10] = 't'; /* 't' for truncate */ |
| 543 | val = strtol(&(frac[1]), &end, 10); |
| 544 | } |
| 545 | if (*frac != '.' || end == NULL((void*)0) || end == frac || val < 0 |
| 546 | || val >= ONE_BILLION1000000000 || val == LONG_MIN(-9223372036854775807L -1L) || val == LONG_MAX9223372036854775807L) { |
| 547 | fprintf(stderrstderr, "3: editcap: \"%s\" isn't a valid rel time value\n", |
| 548 | optarg_str_p); |
| 549 | return false0; |
| 550 | } |
| 551 | } else { |
| 552 | return true1; /* no fractional digits */ |
| 553 | } |
| 554 | |
| 555 | /* adjust fractional portion from fractional to numerator |
| 556 | * e.g., in "1.5" from 5 to 500000000 since .5*10^9 = 500000000 */ |
| 557 | frac_digits = end - frac - 1; /* fractional digit count (remember '.') */ |
| 558 | while(frac_digits < 9) { /* this is frac of 10^9 */ |
| 559 | val *= 10; |
| 560 | frac_digits++; |
| 561 | } |
| 562 | |
| 563 | relative_time_window.nsecs = (int)val; |
| 564 | return true1; |
| 565 | } |
| 566 | |
| 567 | #define SLL_ADDRLEN8 8 /* length of address field */ |
| 568 | struct sll_header { |
| 569 | uint16_t sll_pkttype; /* packet type */ |
| 570 | uint16_t sll_hatype; /* link-layer address type */ |
| 571 | uint16_t sll_halen; /* link-layer address length */ |
| 572 | uint8_t sll_addr[SLL_ADDRLEN8]; /* link-layer address */ |
| 573 | uint16_t sll_protocol; /* protocol */ |
| 574 | }; |
| 575 | |
| 576 | struct sll2_header { |
| 577 | uint16_t sll2_protocol; /* protocol */ |
| 578 | uint16_t sll2_reserved_mbz; /* reserved - must be zero */ |
| 579 | uint32_t sll2_if_index; /* 1-based interface index */ |
| 580 | uint16_t sll2_hatype; /* link-layer address type */ |
| 581 | uint8_t sll2_pkttype; /* packet type */ |
| 582 | uint8_t sll2_halen; /* link-layer address length */ |
| 583 | uint8_t sll2_addr[SLL_ADDRLEN8]; /* link-layer address */ |
| 584 | }; |
| 585 | |
| 586 | #define VLAN_SIZE4 4 |
| 587 | static void |
| 588 | sll_remove_vlan_info(uint8_t* fd, uint32_t* len) { |
| 589 | if (pntoh16(fd + offsetof(struct sll_header, sll_protocol)__builtin_offsetof(struct sll_header, sll_protocol)) == ETHERTYPE_VLAN0x8100) { |
| 590 | int rest_len; |
| 591 | /* point to start of vlan */ |
| 592 | fd = fd + offsetof(struct sll_header, sll_protocol)__builtin_offsetof(struct sll_header, sll_protocol); |
| 593 | /* bytes to read after vlan info */ |
| 594 | rest_len = *len - (offsetof(struct sll_header, sll_protocol)__builtin_offsetof(struct sll_header, sll_protocol) + VLAN_SIZE4); |
| 595 | /* remove vlan info from packet */ |
| 596 | memmove(fd, fd + VLAN_SIZE4, rest_len); |
| 597 | *len -= 4; |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | |
| 602 | |
| 603 | static void |
| 604 | sll_set_unused_info(uint8_t* fd) { |
| 605 | uint32_t ha_len; |
| 606 | ha_len = pntoh16(fd + offsetof(struct sll_header, sll_halen)__builtin_offsetof(struct sll_header, sll_halen)); |
| 607 | |
| 608 | if (ha_len < SLL_ADDRLEN8) { |
| 609 | int unused; |
| 610 | unused = SLL_ADDRLEN8 - ha_len; |
| 611 | /* point to end of sll_ddr */ |
| 612 | fd = fd + offsetof(struct sll_header, sll_addr)__builtin_offsetof(struct sll_header, sll_addr) + ha_len; |
| 613 | /* set zeros in the unused data */ |
| 614 | memset(fd, 0, unused); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | static void |
| 619 | sll2_set_unused_info(uint8_t* fd) { |
| 620 | uint32_t ha_len; |
| 621 | ha_len = *(fd + offsetof(struct sll2_header, sll2_halen)__builtin_offsetof(struct sll2_header, sll2_halen)); |
| 622 | |
| 623 | if (ha_len < SLL_ADDRLEN8) { |
| 624 | int unused; |
| 625 | unused = SLL_ADDRLEN8 - ha_len; |
| 626 | /* point to end of sll2_addr */ |
| 627 | fd = fd + offsetof(struct sll2_header, sll2_addr)__builtin_offsetof(struct sll2_header, sll2_addr) + ha_len; |
| 628 | /* set zeros in the unused data */ |
| 629 | memset(fd, 0, unused); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | static void |
| 634 | remove_vlan_info(wtap_packet_header *phdr, uint8_t* fd) { |
| 635 | switch (phdr->pkt_encap) { |
| 636 | case WTAP_ENCAP_SLL25: |
| 637 | sll_remove_vlan_info(fd, &phdr->caplen); |
| 638 | break; |
| 639 | default: |
| 640 | /* no support for current pkt_encap */ |
| 641 | break; |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | static void |
| 646 | set_unused_info(const wtap_packet_header *phdr, uint8_t* fd) { |
| 647 | switch (phdr->pkt_encap) { |
| 648 | case WTAP_ENCAP_SLL25: |
| 649 | sll_set_unused_info(fd); |
| 650 | break; |
| 651 | case WTAP_ENCAP_SLL2210: |
| 652 | sll2_set_unused_info(fd); |
| 653 | break; |
| 654 | default: |
| 655 | /* no support for current pkt_encap */ |
| 656 | break; |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | static bool_Bool |
| 661 | is_duplicate(uint8_t* fd, uint32_t len) { |
| 662 | int i; |
| 663 | const struct ieee80211_radiotap_header* tap_header; |
| 664 | |
| 665 | /*Hint to ignore some bytes at the start of the frame for the digest calculation(-I option) */ |
| 666 | uint32_t offset = ignored_bytes; |
| 667 | uint32_t new_len; |
| 668 | uint8_t *new_fd; |
| 669 | |
| 670 | if (len <= ignored_bytes) { |
| 671 | offset = 0; |
| 672 | } |
| 673 | |
| 674 | /* Get the size of radiotap header and use that as offset (-p option) */ |
| 675 | if (skip_radiotap == true1) { |
| 676 | tap_header = (const struct ieee80211_radiotap_header*)fd; |
| 677 | offset = pletoh16(&tap_header->it_len); |
| 678 | if (offset >= len) |
| 679 | offset = 0; |
| 680 | } |
| 681 | |
| 682 | new_fd = &fd[offset]; |
| 683 | new_len = len - (offset); |
| 684 | |
| 685 | cur_dup_entry++; |
| 686 | if (cur_dup_entry >= dup_window) |
| 687 | cur_dup_entry = 0; |
| 688 | |
| 689 | /* Calculate our digest */ |
| 690 | gcry_md_hash_buffer(GCRY_MD_MD5, fd_hash[cur_dup_entry].digest, new_fd, new_len); |
| 691 | |
| 692 | fd_hash[cur_dup_entry].len = len; |
| 693 | |
| 694 | /* Look for duplicates */ |
| 695 | for (i = 0; i < dup_window; i++) { |
| 696 | if (i == cur_dup_entry) |
| 697 | continue; |
| 698 | |
| 699 | if (fd_hash[i].len == fd_hash[cur_dup_entry].len |
| 700 | && memcmp(fd_hash[i].digest, fd_hash[cur_dup_entry].digest, 16) == 0) { |
| 701 | return true1; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | return false0; |
| 706 | } |
| 707 | |
| 708 | static bool_Bool |
| 709 | is_duplicate_rel_time(uint8_t* fd, uint32_t len, const nstime_t *current) { |
| 710 | int i; |
| 711 | |
| 712 | /*Hint to ignore some bytes at the start of the frame for the digest calculation(-I option) */ |
| 713 | uint32_t offset = ignored_bytes; |
| 714 | uint32_t new_len; |
| 715 | uint8_t *new_fd; |
| 716 | |
| 717 | if (len <= ignored_bytes) { |
| 718 | offset = 0; |
| 719 | } |
| 720 | |
| 721 | new_fd = &fd[offset]; |
| 722 | new_len = len - (offset); |
| 723 | |
| 724 | cur_dup_entry++; |
| 725 | if (cur_dup_entry >= dup_window) |
| 726 | cur_dup_entry = 0; |
| 727 | |
| 728 | /* Calculate our digest */ |
| 729 | gcry_md_hash_buffer(GCRY_MD_MD5, fd_hash[cur_dup_entry].digest, new_fd, new_len); |
| 730 | |
| 731 | fd_hash[cur_dup_entry].len = len; |
| 732 | fd_hash[cur_dup_entry].frame_time.secs = current->secs; |
| 733 | fd_hash[cur_dup_entry].frame_time.nsecs = current->nsecs; |
| 734 | |
| 735 | /* |
| 736 | * Look for relative time related duplicates. |
| 737 | * This is hopefully a reasonably efficient mechanism for |
| 738 | * finding duplicates by rel time in the fd_hash[] cache. |
| 739 | * We check starting from the most recently added hash |
| 740 | * entries and work backwards towards older packets. |
| 741 | * This approach allows the dup test to be terminated |
| 742 | * when the relative time of a cached entry is found to |
| 743 | * be beyond the dup time window. |
| 744 | * |
| 745 | * Of course this assumes that the input trace file is |
| 746 | * "well-formed" in the sense that the packet timestamps are |
| 747 | * in strict chronologically increasing order (which is NOT |
| 748 | * always the case!!). |
| 749 | * |
| 750 | * The fd_hash[] table was deliberately created large (1,000,000). |
| 751 | * Looking for time related duplicates in large trace files with |
| 752 | * non-fractional dup time window values can potentially take |
| 753 | * a long time to complete. |
| 754 | */ |
| 755 | |
| 756 | for (i = cur_dup_entry - 1;; i--) { |
| 757 | nstime_t delta; |
| 758 | int cmp; |
| 759 | |
| 760 | if (i < 0) |
| 761 | i = dup_window - 1; |
| 762 | |
| 763 | if (i == cur_dup_entry) { |
| 764 | /* |
| 765 | * We've decremented back to where we started. |
| 766 | * Check no more! |
| 767 | */ |
| 768 | break; |
| 769 | } |
| 770 | |
| 771 | if (nstime_is_unset(&(fd_hash[i].frame_time))) { |
| 772 | /* |
| 773 | * We've decremented to an unused fd_hash[] entry. |
| 774 | * Check no more! |
| 775 | */ |
| 776 | break; |
| 777 | } |
| 778 | |
| 779 | nstime_delta(&delta, current, &fd_hash[i].frame_time); |
| 780 | |
| 781 | if (delta.secs < 0 || delta.nsecs < 0) { |
| 782 | /* |
| 783 | * A negative delta implies that the current packet |
| 784 | * has an absolute timestamp less than the cached packet |
| 785 | * that it is being compared to. This is NOT a normal |
| 786 | * situation since trace files usually have packets in |
| 787 | * chronological order (oldest to newest). |
| 788 | * |
| 789 | * There are several possible ways to deal with this: |
| 790 | * 1. 'continue' dup checking with the next cached frame. |
| 791 | * 2. 'break' from looking for a duplicate of the current frame. |
| 792 | * 3. Take the absolute value of the delta and see if that |
| 793 | * falls within the specified dup time window. |
| 794 | * |
| 795 | * Currently this code does option 1. But it would pretty |
| 796 | * easy to add yet-another-editcap-option to select one of |
| 797 | * the other behaviors for dealing with out-of-sequence |
| 798 | * packets. |
| 799 | */ |
| 800 | continue; |
| 801 | } |
| 802 | |
| 803 | cmp = nstime_cmp(&delta, &relative_time_window); |
| 804 | |
| 805 | if (cmp > 0) { |
| 806 | /* |
| 807 | * The delta time indicates that we are now looking at |
| 808 | * cached packets beyond the specified dup time window. |
| 809 | * Check no more! |
| 810 | */ |
| 811 | break; |
| 812 | } else if (fd_hash[i].len == fd_hash[cur_dup_entry].len |
| 813 | && memcmp(fd_hash[i].digest, fd_hash[cur_dup_entry].digest, 16) == 0) { |
| 814 | return true1; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | return false0; |
| 819 | } |
| 820 | |
| 821 | static void |
| 822 | mutate_packet_data(wtap_rec *rec, uint8_t *buf, uint32_t change_offset, uint64_t count) |
| 823 | { |
| 824 | uint32_t caplen; |
| 825 | unsigned real_data_start = 0; |
| 826 | |
| 827 | caplen = 0; |
Value stored to 'caplen' is never read | |
| 828 | |
| 829 | switch (rec->rec_type) { |
| 830 | |
| 831 | case REC_TYPE_PACKET0: |
| 832 | caplen = rec->rec_header.packet_header.caplen; |
| 833 | |
| 834 | /* |
| 835 | * Protect some non-protocol data. |
| 836 | * XXX - any reason not to fuzz this part? |
| 837 | */ |
| 838 | if (rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_CATAPULT_DCT200089) |
| 839 | real_data_start = find_dct2000_real_data(buf); |
| 840 | break; |
| 841 | |
| 842 | case REC_TYPE_FT_SPECIFIC_EVENT1: |
| 843 | case REC_TYPE_FT_SPECIFIC_REPORT2: |
| 844 | caplen = rec->rec_header.ft_specific_header.record_len; |
| 845 | break; |
| 846 | |
| 847 | case REC_TYPE_SYSCALL3: |
| 848 | caplen = rec->rec_header.syscall_header.event_filelen; |
| 849 | break; |
| 850 | |
| 851 | case REC_TYPE_SYSTEMD_JOURNAL_EXPORT4: |
| 852 | caplen = rec->rec_header.systemd_journal_export_header.record_len; |
| 853 | break; |
| 854 | |
| 855 | default: |
| 856 | /* We don't mutate anything else. */ |
| 857 | return; |
| 858 | } |
| 859 | |
| 860 | if (change_offset > caplen) { |
| 861 | fprintf(stderrstderr, "change offset %u is longer than caplen %u in packet %" PRIu64"l" "u" "\n", |
| 862 | change_offset, caplen, count); |
| 863 | return; |
| 864 | } |
| 865 | |
| 866 | real_data_start += change_offset; |
| 867 | |
| 868 | for (unsigned i = real_data_start; i < caplen; i++) { |
| 869 | if (rand() <= err_prob * RAND_MAX2147483647) { |
| 870 | int err_type = rand() / (RAND_MAX2147483647 / ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1) + 1); |
| 871 | |
| 872 | if (err_type < ERR_WT_BIT5) { |
| 873 | buf[i] ^= 1 << (rand() / (RAND_MAX2147483647 / 8 + 1)); |
| 874 | err_type = ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1); |
| 875 | } else { |
| 876 | err_type -= ERR_WT_BYTE5; |
| 877 | } |
| 878 | |
| 879 | if (err_type < ERR_WT_BYTE5) { |
| 880 | buf[i] = rand() / (RAND_MAX2147483647 / 255 + 1); |
| 881 | err_type = ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1); |
| 882 | } else { |
| 883 | err_type -= ERR_WT_BYTE5; |
| 884 | } |
| 885 | |
| 886 | if (err_type < ERR_WT_ALNUM5) { |
| 887 | buf[i] = ALNUM_CHARS"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"[rand() / (RAND_MAX2147483647 / ALNUM_LEN(sizeof("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" ) - 1) + 1)]; |
| 888 | err_type = ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1); |
| 889 | } else { |
| 890 | err_type -= ERR_WT_ALNUM5; |
| 891 | } |
| 892 | |
| 893 | if (err_type < ERR_WT_FMT2) { |
| 894 | if (i < caplen - 2) |
| 895 | (void) g_strlcpy((char*) &buf[i], "%s", 2); |
| 896 | err_type = ERR_WT_TOTAL(5 + 5 + 5 + 2 + 1); |
| 897 | } else { |
| 898 | err_type -= ERR_WT_FMT2; |
| 899 | } |
| 900 | |
| 901 | if (err_type < ERR_WT_AA1) { |
| 902 | for (unsigned j = i; j < caplen; j++) |
| 903 | buf[j] = 0xAA; |
| 904 | i = caplen; |
| 905 | } |
| 906 | } |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | static void |
| 911 | print_usage(FILE *output) |
| 912 | { |
| 913 | fprintf(output, "\n"); |
| 914 | fprintf(output, "Usage: editcap [options] ... <infile> <outfile> [ <packet#>[-<packet#>] ... ]\n"); |
| 915 | fprintf(output, "\n"); |
| 916 | fprintf(output, "<infile> and <outfile> must both be present; use '-' for stdin or stdout.\n"); |
| 917 | fprintf(output, "A single packet or a range of packets can be selected.\n"); |
| 918 | fprintf(output, "\n"); |
| 919 | fprintf(output, "Packet selection:\n"); |
| 920 | fprintf(output, " -r keep the selected packets; default is to delete them.\n"); |
| 921 | fprintf(output, " -A <start time> only read packets whose timestamp is after (or equal\n"); |
| 922 | fprintf(output, " to) the given time.\n"); |
| 923 | fprintf(output, " -B <stop time> only read packets whose timestamp is before the\n"); |
| 924 | fprintf(output, " given time.\n"); |
| 925 | fprintf(output, " Time format for -A/-B options is\n"); |
| 926 | fprintf(output, " YYYY-MM-DDThh:mm:ss[.nnnnnnnnn][Z|+-hh:mm]\n"); |
| 927 | fprintf(output, " Unix epoch timestamps are also supported.\n"); |
| 928 | fprintf(output, "\n"); |
| 929 | fprintf(output, "Duplicate packet removal:\n"); |
| 930 | fprintf(output, " --novlan remove vlan info from packets before checking for duplicates.\n"); |
| 931 | fprintf(output, " -d remove packet if duplicate (window == %d).\n", DEFAULT_DUP_DEPTH5); |
| 932 | fprintf(output, " -D <dup window> remove packet if duplicate; configurable <dup window>.\n"); |
| 933 | fprintf(output, " Valid <dup window> values are 0 to %d.\n", MAX_DUP_DEPTH1000000); |
| 934 | fprintf(output, " NOTE: A <dup window> of 0 with -V (verbose option) is\n"); |
| 935 | fprintf(output, " useful to print MD5 hashes.\n"); |
| 936 | fprintf(output, " -w <dup time window> remove packet if duplicate packet is found EQUAL TO OR\n"); |
| 937 | fprintf(output, " LESS THAN <dup time window> prior to current packet.\n"); |
| 938 | fprintf(output, " A <dup time window> is specified in relative seconds\n"); |
| 939 | fprintf(output, " (e.g. 0.000001).\n"); |
| 940 | fprintf(output, " NOTE: The use of the 'Duplicate packet removal' options with\n"); |
| 941 | fprintf(output, " other editcap options except -V may not always work as expected.\n"); |
| 942 | fprintf(output, " Specifically the -r, -t or -S options will very likely NOT have the\n"); |
| 943 | fprintf(output, " desired effect if combined with the -d, -D or -w.\n"); |
| 944 | fprintf(output, " --skip-radiotap-header skip radiotap header when checking for packet duplicates.\n"); |
| 945 | fprintf(output, " Useful when processing packets captured by multiple radios\n"); |
| 946 | fprintf(output, " on the same channel in the vicinity of each other.\n"); |
| 947 | fprintf(output, " --set-unused set unused byts to zero in sll link addr.\n"); |
| 948 | fprintf(output, "\n"); |
| 949 | fprintf(output, "Packet manipulation:\n"); |
| 950 | fprintf(output, " -s <snaplen> truncate each packet to max. <snaplen> bytes of data.\n"); |
| 951 | fprintf(output, " -C [offset:]<choplen> chop each packet by <choplen> bytes. Positive values\n"); |
| 952 | fprintf(output, " chop at the packet beginning, negative values at the\n"); |
| 953 | fprintf(output, " packet end. If an optional offset precedes the length,\n"); |
| 954 | fprintf(output, " then the bytes chopped will be offset from that value.\n"); |
| 955 | fprintf(output, " Positive offsets are from the packet beginning,\n"); |
| 956 | fprintf(output, " negative offsets are from the packet end. You can use\n"); |
| 957 | fprintf(output, " this option more than once, allowing up to 2 chopping\n"); |
| 958 | fprintf(output, " regions within a packet provided that at least 1\n"); |
| 959 | fprintf(output, " choplen is positive and at least 1 is negative.\n"); |
| 960 | fprintf(output, " -L adjust the frame (i.e. reported) length when chopping\n"); |
| 961 | fprintf(output, " and/or snapping.\n"); |
| 962 | fprintf(output, " -t <time adjustment> adjust the timestamp of each packet.\n"); |
| 963 | fprintf(output, " <time adjustment> is in relative seconds (e.g. -0.5).\n"); |
| 964 | fprintf(output, " -S <strict adjustment> adjust timestamp of packets if necessary to ensure\n"); |
| 965 | fprintf(output, " strict chronological increasing order. The <strict\n"); |
| 966 | fprintf(output, " adjustment> is specified in relative seconds with\n"); |
| 967 | fprintf(output, " values of 0 or 0.000001 being the most reasonable.\n"); |
| 968 | fprintf(output, " A negative adjustment value will modify timestamps so\n"); |
| 969 | fprintf(output, " that each packet's delta time is the absolute value\n"); |
| 970 | fprintf(output, " of the adjustment specified. A value of -0 will set\n"); |
| 971 | fprintf(output, " all packets to the timestamp of the first packet.\n"); |
| 972 | fprintf(output, " -E <error probability> set the probability (between 0.0 and 1.0 incl.) that\n"); |
| 973 | fprintf(output, " a particular packet byte will be randomly changed.\n"); |
| 974 | fprintf(output, " -o <change offset> When used in conjunction with -E, skip some bytes from the\n"); |
| 975 | fprintf(output, " beginning of the packet. This allows one to preserve some\n"); |
| 976 | fprintf(output, " bytes, in order to have some headers untouched.\n"); |
| 977 | fprintf(output, " --seed <seed> When used in conjunction with -E, set the seed to use for\n"); |
| 978 | fprintf(output, " the pseudo-random number generator. This allows one to\n"); |
| 979 | fprintf(output, " repeat a particular sequence of errors.\n"); |
| 980 | fprintf(output, " -I <bytes to ignore> ignore the specified number of bytes at the beginning\n"); |
| 981 | fprintf(output, " of the frame during MD5 hash calculation, unless the\n"); |
| 982 | fprintf(output, " frame is too short, then the full frame is used.\n"); |
| 983 | fprintf(output, " Useful to remove duplicated packets taken on\n"); |
| 984 | fprintf(output, " several routers (different mac addresses for\n"); |
| 985 | fprintf(output, " example).\n"); |
| 986 | fprintf(output, " e.g. -I 26 in case of Ether/IP will ignore\n"); |
| 987 | fprintf(output, " ether(14) and IP header(20 - 4(src ip) - 4(dst ip)).\n"); |
| 988 | fprintf(output, " -a <framenum>:<comment> Add or replace comment for given frame number\n"); |
| 989 | fprintf(output, "\n"); |
| 990 | fprintf(output, "Output File(s):\n"); |
| 991 | fprintf(output, " if the output file(s) have the .gz extension, then\n"); |
| 992 | fprintf(output, " gzip compression will be used\n"); |
| 993 | fprintf(output, " -c <packets per file> split the packet output to different files based on\n"); |
| 994 | fprintf(output, " uniform packet counts with a maximum of\n"); |
| 995 | fprintf(output, " <packets per file> each.\n"); |
| 996 | fprintf(output, " -i <seconds per file> split the packet output to different files based on\n"); |
| 997 | fprintf(output, " uniform time intervals with a maximum of\n"); |
| 998 | fprintf(output, " <seconds per file> each.\n"); |
| 999 | fprintf(output, " -F <capture type> set the output file type; default is pcapng.\n"); |
| 1000 | fprintf(output, " An empty \"-F\" option will list the file types.\n"); |
| 1001 | fprintf(output, " -T <encap type> set the output file encapsulation type; default is the\n"); |
| 1002 | fprintf(output, " same as the input file. An empty \"-T\" option will\n"); |
| 1003 | fprintf(output, " list the encapsulation types.\n"); |
| 1004 | fprintf(output, " --inject-secrets <type>,<file> Insert decryption secrets from <file>. List\n"); |
| 1005 | fprintf(output, " supported secret types with \"--inject-secrets help\".\n"); |
| 1006 | fprintf(output, " --extract-secrets Extract decryption secrets into the output file instead.\n"); |
| 1007 | fprintf(output, " Incompatible with other options besides -V.\n"); |
| 1008 | fprintf(output, " --discard-all-secrets Discard all decryption secrets from the input file\n"); |
| 1009 | fprintf(output, " when writing the output file. Does not discard\n"); |
| 1010 | fprintf(output, " secrets added by \"--inject-secrets\" in the same\n"); |
| 1011 | fprintf(output, " command line.\n"); |
| 1012 | fprintf(output, " --capture-comment <comment>\n"); |
| 1013 | fprintf(output, " Add a capture file comment, if supported.\n"); |
| 1014 | fprintf(output, " --discard-capture-comment\n"); |
| 1015 | fprintf(output, " Discard capture file comments from the input file\n"); |
| 1016 | fprintf(output, " when writing the output file. Does not discard\n"); |
| 1017 | fprintf(output, " comments added by \"--capture-comment\" in the same\n"); |
| 1018 | fprintf(output, " command line.\n"); |
| 1019 | fprintf(output, " --discard-packet-comments\n"); |
| 1020 | fprintf(output, " Discard all packet comments from the input file\n"); |
| 1021 | fprintf(output, " when writing the output file. Does not discard\n"); |
| 1022 | fprintf(output, " comments added by \"-a\" in the same command line.\n"); |
| 1023 | fprintf(output, " --compress <type> Compress the output file using the type compression format.\n"); |
| 1024 | fprintf(output, "\n"); |
| 1025 | fprintf(output, "Miscellaneous:\n"); |
| 1026 | fprintf(output, " -h, --help display this help and exit.\n"); |
| 1027 | fprintf(output, " -V verbose output.\n"); |
| 1028 | fprintf(output, " If -V is used with any of the 'Duplicate Packet\n"); |
| 1029 | fprintf(output, " Removal' options (-d, -D or -w) then Packet lengths\n"); |
| 1030 | fprintf(output, " and MD5 hashes are printed to standard-error.\n"); |
| 1031 | fprintf(output, " -v, --version print version information and exit.\n"); |
| 1032 | } |
| 1033 | |
| 1034 | struct string_elem { |
| 1035 | const char *sstr; /* The short string */ |
| 1036 | const char *lstr; /* The long string */ |
| 1037 | }; |
| 1038 | |
| 1039 | static int |
| 1040 | string_nat_compare(const void *a, const void *b) |
| 1041 | { |
| 1042 | return ws_ascii_strnatcmp(((const struct string_elem *)a)->sstr, |
| 1043 | ((const struct string_elem *)b)->sstr); |
| 1044 | } |
| 1045 | |
| 1046 | static void |
| 1047 | string_elem_print(void *data, void *stream_ptr) |
| 1048 | { |
| 1049 | fprintf((FILE *) stream_ptr, " %s - %s\n", |
| 1050 | ((struct string_elem *)data)->sstr, |
| 1051 | ((struct string_elem *)data)->lstr); |
| 1052 | } |
| 1053 | |
| 1054 | static void |
| 1055 | list_capture_types(FILE *stream) { |
| 1056 | GArray *writable_type_subtypes; |
| 1057 | |
| 1058 | fprintf(stream, "editcap: The available capture file types for the \"-F\" flag are:\n"); |
| 1059 | writable_type_subtypes = wtap_get_writable_file_types_subtypes(FT_SORT_BY_NAME); |
| 1060 | for (unsigned i = 0; i < writable_type_subtypes->len; i++) { |
| 1061 | int ft = g_array_index(writable_type_subtypes, int, i)(((int*) (void *) (writable_type_subtypes)->data) [(i)]); |
| 1062 | fprintf(stream, " %s - %s\n", wtap_file_type_subtype_name(ft), |
| 1063 | wtap_file_type_subtype_description(ft)); |
| 1064 | } |
| 1065 | g_array_free(writable_type_subtypes, TRUE(!(0))); |
| 1066 | } |
| 1067 | |
| 1068 | static void |
| 1069 | list_encap_types(FILE *stream) { |
| 1070 | int i; |
| 1071 | struct string_elem *encaps; |
| 1072 | GSList *list = NULL((void*)0); |
| 1073 | |
| 1074 | encaps = g_new(struct string_elem, WTAP_NUM_ENCAP_TYPES)((struct string_elem *) g_malloc_n ((wtap_get_num_encap_types ()), sizeof (struct string_elem))); |
| 1075 | fprintf(stream, "editcap: The available encapsulation types for the \"-T\" flag are:\n"); |
| 1076 | for (i = 0; i < WTAP_NUM_ENCAP_TYPESwtap_get_num_encap_types(); i++) { |
| 1077 | encaps[i].sstr = wtap_encap_name(i); |
| 1078 | if (encaps[i].sstr != NULL((void*)0)) { |
| 1079 | encaps[i].lstr = wtap_encap_description(i); |
| 1080 | list = g_slist_insert_sorted(list, &encaps[i], string_nat_compare); |
| 1081 | } |
| 1082 | } |
| 1083 | g_slist_foreach(list, string_elem_print, stream); |
| 1084 | g_slist_free(list); |
| 1085 | g_free(encaps); |
| 1086 | } |
| 1087 | |
| 1088 | static void |
| 1089 | list_output_compression_types(void) { |
| 1090 | GSList *output_compression_types; |
| 1091 | |
| 1092 | fprintf(stderrstderr, "editcap: The available output compress type(s) for the \"--compress\" flag are:\n"); |
| 1093 | output_compression_types = wtap_get_all_output_compression_type_names_list(); |
| 1094 | for (GSList *compression_type = output_compression_types; |
| 1095 | compression_type != NULL((void*)0); |
| 1096 | compression_type = g_slist_next(compression_type)((compression_type) ? (((GSList *)(compression_type))->next ) : ((void*)0))) { |
| 1097 | fprintf(stderrstderr, " %s\n", (const char *)compression_type->data); |
| 1098 | } |
| 1099 | |
| 1100 | g_slist_free(output_compression_types); |
| 1101 | } |
| 1102 | |
| 1103 | static void |
| 1104 | list_secrets_types(FILE *stream) |
| 1105 | { |
| 1106 | for (unsigned i = 0; i < G_N_ELEMENTS(secrets_types)(sizeof (secrets_types) / sizeof ((secrets_types)[0])); i++) { |
| 1107 | fprintf(stream, " %s\n", secrets_types[i].str); |
| 1108 | } |
| 1109 | } |
| 1110 | |
| 1111 | static uint32_t |
| 1112 | lookup_secrets_type(const char *type) |
| 1113 | { |
| 1114 | for (unsigned i = 0; i < G_N_ELEMENTS(secrets_types)(sizeof (secrets_types) / sizeof ((secrets_types)[0])); i++) { |
| 1115 | if (!strcmp(secrets_types[i].str, type)) { |
| 1116 | return secrets_types[i].id; |
| 1117 | } |
| 1118 | } |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | static void |
| 1123 | validate_secrets_file(const char *filename, uint32_t secrets_type, const char *data) |
| 1124 | { |
| 1125 | if (secrets_type == SECRETS_TYPE_TLS0x544c534b) { |
| 1126 | /* |
| 1127 | * A key log file is unlikely going to look like either: |
| 1128 | * - a PEM-encoded private key file. |
| 1129 | * - a BER-encoded PKCS #12 file ("PFX file"). (Look for a Constructed |
| 1130 | * SEQUENCE tag, e.g. bytes 0x30 which happens to be ASCII '0'.) |
| 1131 | */ |
| 1132 | if (g_str_has_prefix(data, "-----BEGIN ")(__builtin_constant_p ("-----BEGIN ")? __extension__ ({ const char * const __str = (data); const char * const __prefix = ( "-----BEGIN "); gboolean __result = (0); if (__str == ((void* )0) || __prefix == ((void*)0)) __result = (g_str_has_prefix) ( __str, __prefix); else { const size_t __str_len = strlen (((__str ) + !(__str))); const size_t __prefix_len = strlen (((__prefix ) + !(__prefix))); if (__str_len >= __prefix_len) __result = memcmp (((__str) + !(__str)), ((__prefix) + !(__prefix)), __prefix_len ) == 0; } __result; }) : (g_str_has_prefix) (data, "-----BEGIN " ) ) || data[0] == 0x30) { |
| 1133 | fprintf(stderrstderr, |
| 1134 | "editcap: Warning: \"%s\" is not a key log file, but an unsupported private key file. Decryption will not work.\n", |
| 1135 | filename); |
| 1136 | } |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | static int |
| 1141 | framenum_compare(const void *a, const void *b, void *user_data _U___attribute__((unused))) |
| 1142 | { |
| 1143 | uint64_t *frame_a = (uint64_t*)a; |
| 1144 | uint64_t *frame_b = (uint64_t*)b; |
| 1145 | if (*frame_a < *frame_b) |
| 1146 | return -1; |
| 1147 | |
| 1148 | if (*frame_a > *frame_b) |
| 1149 | return 1; |
| 1150 | |
| 1151 | return 0; |
| 1152 | } |
| 1153 | |
| 1154 | static wtap_dumper * |
| 1155 | editcap_dump_open(const char *filename, const wtap_dump_params *params, |
| 1156 | GArray *idbs_seen, int *err, char **err_info, |
| 1157 | wtap_compression_type compression_type) |
| 1158 | { |
| 1159 | wtap_dumper *pdh; |
| 1160 | |
| 1161 | if (strcmp(filename, "-") == 0) { |
| 1162 | /* Write to the standard output. */ |
| 1163 | pdh = wtap_dump_open_stdout(out_file_type_subtype, compression_type, |
| 1164 | params, err, err_info); |
| 1165 | } else { |
| 1166 | pdh = wtap_dump_open(filename, out_file_type_subtype, compression_type, |
| 1167 | params, err, err_info); |
| 1168 | } |
| 1169 | if (pdh == NULL((void*)0)) |
| 1170 | return NULL((void*)0); |
| 1171 | |
| 1172 | /* |
| 1173 | * If the output file supports identifying the interfaces on which |
| 1174 | * packets arrive, add all the IDBs we've seen so far. |
| 1175 | * |
| 1176 | * That mean that the abstract interface provided by libwiretap |
| 1177 | * involves WTAP_BLOCK_IF_ID_AND_INFO blocks. |
| 1178 | */ |
| 1179 | if (wtap_file_type_subtype_supports_block(wtap_dump_file_type_subtype(pdh), |
| 1180 | WTAP_BLOCK_IF_ID_AND_INFO) != BLOCK_NOT_SUPPORTED) { |
| 1181 | for (unsigned i = 0; i < idbs_seen->len; i++) { |
| 1182 | wtap_block_t if_data = g_array_index(idbs_seen, wtap_block_t, i)(((wtap_block_t*) (void *) (idbs_seen)->data) [(i)]); |
| 1183 | wtap_block_t if_data_copy; |
| 1184 | |
| 1185 | /* |
| 1186 | * Make a copy of this IDB, so that we can change the |
| 1187 | * encapsulation type without trashing the original. |
| 1188 | */ |
| 1189 | if_data_copy = wtap_block_make_copy(if_data); |
| 1190 | |
| 1191 | /* |
| 1192 | * If an encapsulation type was specified, override the |
| 1193 | * encapsulation type of the interface. |
| 1194 | */ |
| 1195 | if (out_frame_type != -2) { |
| 1196 | wtapng_if_descr_mandatory_t *if_mand; |
| 1197 | |
| 1198 | if_mand = (wtapng_if_descr_mandatory_t *)wtap_block_get_mandatory_data(if_data_copy); |
| 1199 | if_mand->wtap_encap = out_frame_type; |
| 1200 | } |
| 1201 | |
| 1202 | /* |
| 1203 | * Add this possibly-modified IDB to the file to which |
| 1204 | * we're currently writing. |
| 1205 | */ |
| 1206 | if (!wtap_dump_add_idb(pdh, if_data_copy, err, err_info)) { |
| 1207 | int close_err; |
| 1208 | char *close_err_info; |
| 1209 | |
| 1210 | wtap_dump_close(pdh, NULL((void*)0), &close_err, &close_err_info); |
| 1211 | g_free(close_err_info); |
| 1212 | wtap_block_unref(if_data_copy); |
| 1213 | return NULL((void*)0); |
| 1214 | } |
| 1215 | |
| 1216 | /* |
| 1217 | * Release the copy - wtap_dump_add_idb() makes its own copy. |
| 1218 | */ |
| 1219 | wtap_block_unref(if_data_copy); |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | return pdh; |
| 1224 | } |
| 1225 | |
| 1226 | static bool_Bool |
| 1227 | process_new_idbs(wtap *wth, wtap_dumper *pdh, GArray *idbs_seen, |
| 1228 | int *err, char **err_info) |
| 1229 | { |
| 1230 | wtap_block_t if_data; |
| 1231 | |
| 1232 | while ((if_data = wtap_get_next_interface_description(wth)) != NULL((void*)0)) { |
| 1233 | /* |
| 1234 | * Only add interface blocks if the output file supports (meaning |
| 1235 | * *requires*) them. |
| 1236 | * |
| 1237 | * That mean that the abstract interface provided by libwiretap |
| 1238 | * involves WTAP_BLOCK_IF_ID_AND_INFO blocks. |
| 1239 | */ |
| 1240 | if (pdh != NULL((void*)0) && wtap_file_type_subtype_supports_block(wtap_dump_file_type_subtype(pdh), |
| 1241 | WTAP_BLOCK_IF_ID_AND_INFO) != BLOCK_NOT_SUPPORTED) { |
| 1242 | wtap_block_t if_data_copy; |
| 1243 | |
| 1244 | /* |
| 1245 | * Make a copy of this IDB, so that we can change the |
| 1246 | * encapsulation type without trashing the original. |
| 1247 | */ |
| 1248 | if_data_copy = wtap_block_make_copy(if_data); |
| 1249 | |
| 1250 | /* |
| 1251 | * If an encapsulation type was specified, override the |
| 1252 | * encapsulation type of the interface. |
| 1253 | */ |
| 1254 | if (out_frame_type != -2) { |
| 1255 | wtapng_if_descr_mandatory_t *if_mand; |
| 1256 | |
| 1257 | if_mand = (wtapng_if_descr_mandatory_t *)wtap_block_get_mandatory_data(if_data_copy); |
| 1258 | if_mand->wtap_encap = out_frame_type; |
| 1259 | } |
| 1260 | |
| 1261 | /* |
| 1262 | * Add this possibly-modified IDB to the file to which |
| 1263 | * we're currently writing. |
| 1264 | */ |
| 1265 | if (!wtap_dump_add_idb(pdh, if_data_copy, err, err_info)) |
| 1266 | return false0; |
| 1267 | |
| 1268 | /* |
| 1269 | * Release the copy - wtap_dump_add_idb() makes its own copy. |
| 1270 | */ |
| 1271 | wtap_block_unref(if_data_copy); |
| 1272 | |
| 1273 | /* |
| 1274 | * Also add an unmodified copy to the set of IDBs we've seen, |
| 1275 | * in case we start writing to another file (which would be |
| 1276 | * of the same type as the current file, and thus will also |
| 1277 | * require interface IDs). |
| 1278 | */ |
| 1279 | if_data_copy = wtap_block_make_copy(if_data); |
| 1280 | g_array_append_val(idbs_seen, if_data_copy)g_array_append_vals (idbs_seen, &(if_data_copy), 1); |
| 1281 | } |
| 1282 | } |
| 1283 | return true1; |
| 1284 | } |
| 1285 | |
| 1286 | static int |
| 1287 | extract_secrets(wtap *wth, char* filename, int *err, char **err_info) |
| 1288 | { |
| 1289 | wtap_rec read_rec; |
| 1290 | int64_t offset; |
| 1291 | char *fprefix = NULL((void*)0); |
| 1292 | char *fsuffix = NULL((void*)0); |
| 1293 | |
| 1294 | /* Read all of the packets in turn */ |
| 1295 | wtap_rec_init(&read_rec, 1514); |
| 1296 | while (wtap_read(wth, &read_rec, err, err_info, &offset)) { |
| 1297 | /* Do we want to respect the max packet number on the command line? |
| 1298 | * Probably more confusing than it's worth, because a user might |
| 1299 | * not know if a DSB is at the end of the file. |
| 1300 | */ |
| 1301 | wtap_rec_reset(&read_rec); |
| 1302 | } |
| 1303 | wtap_rec_cleanup(&read_rec); |
| 1304 | |
| 1305 | wtapng_dsb_mandatory_t *dsb; |
| 1306 | if (strcmp(filename, "-") == 0) { |
| 1307 | /* Sure. Why not. */ |
| 1308 | for (unsigned dsb_num = 0; dsb_num < wtap_file_get_num_dsbs(wth); ++dsb_num) { |
| 1309 | dsb = (wtapng_dsb_mandatory_t *)wtap_block_get_mandatory_data(wtap_file_get_dsb(wth, dsb_num)); |
| 1310 | if (verbose) { |
| 1311 | fprintf(stderrstderr, "Writing secrets type \"%s\" (0x%08x) to standard out.\n", |
| 1312 | secrets_type_description(dsb->secrets_type), dsb->secrets_type); |
| 1313 | } |
| 1314 | if (fwrite(dsb->secrets_data, 1, dsb->secrets_len, stdoutstdout) != dsb->secrets_len) { |
| 1315 | return WRITE_ERROR2; |
| 1316 | } |
| 1317 | } |
| 1318 | } else if (wtap_file_get_num_dsbs(wth) == 1) { |
| 1319 | dsb = (wtapng_dsb_mandatory_t *)wtap_block_get_mandatory_data(wtap_file_get_dsb(wth, 0)); |
| 1320 | if (verbose) { |
| 1321 | fprintf(stderrstderr, "Writing secrets type \"%s\" (0x%08x) to \"%s\".\n", |
| 1322 | secrets_type_description(dsb->secrets_type), dsb->secrets_type, |
| 1323 | filename); |
| 1324 | } |
| 1325 | if (!write_file_binary_mode(filename, dsb->secrets_data, dsb->secrets_len)) { |
| 1326 | return WRITE_ERROR2; |
| 1327 | } |
| 1328 | } else { |
| 1329 | /* We have more than one DSB, so write multiple files. While for some |
| 1330 | * types, we could combine the information from different DSBs togther |
| 1331 | * (and most of those are text-based, so we'd want to write in text |
| 1332 | * mode so that the line endings are uniform (which makes testing |
| 1333 | * harder), we don't know that for every type. |
| 1334 | */ |
| 1335 | if (!fileset_extract_prefix_suffix(filename, &fprefix, &fsuffix, NULL((void*)0))) { |
| 1336 | return CANT_EXTRACT_PREFIX2; |
| 1337 | } |
| 1338 | char *extract_filename; |
| 1339 | for (unsigned dsb_num = 0; dsb_num < wtap_file_get_num_dsbs(wth); ++dsb_num) { |
| 1340 | dsb = (wtapng_dsb_mandatory_t *)wtap_block_get_mandatory_data(wtap_file_get_dsb(wth, dsb_num)); |
| 1341 | extract_filename = fileset_get_filename_by_pattern(dsb_num, NULL((void*)0), fprefix, fsuffix); |
| 1342 | if (verbose) { |
| 1343 | fprintf(stderrstderr, "Writing secrets type \"%s\" (0x%08x) to \"%s\".\n", |
| 1344 | secrets_type_description(dsb->secrets_type), dsb->secrets_type, |
| 1345 | extract_filename); |
| 1346 | } |
| 1347 | if (!write_file_binary_mode(extract_filename, dsb->secrets_data, dsb->secrets_len)) { |
| 1348 | /* write_file_binary_mode already reports failures */ |
| 1349 | g_free(extract_filename); |
| 1350 | g_free(fprefix); |
| 1351 | g_free(fsuffix); |
| 1352 | |
| 1353 | return WRITE_ERROR2; |
| 1354 | } |
| 1355 | g_free(extract_filename); |
| 1356 | } |
| 1357 | g_free(fprefix); |
| 1358 | g_free(fsuffix); |
| 1359 | } |
| 1360 | return EXIT_SUCCESS0; |
| 1361 | } |
| 1362 | |
| 1363 | int |
| 1364 | main(int argc, char *argv[]) |
| 1365 | { |
| 1366 | char *configuration_init_error; |
| 1367 | wtap *wth = NULL((void*)0); |
| 1368 | int i, read_err, write_err; |
| 1369 | char *read_err_info, *write_err_info; |
| 1370 | int opt; |
| 1371 | |
| 1372 | #define LONGOPT_NO_VLAN3000 +1 LONGOPT_BASE_APPLICATION3000+1 |
| 1373 | #define LONGOPT_SKIP_RADIOTAP_HEADER3000 +2 LONGOPT_BASE_APPLICATION3000+2 |
| 1374 | #define LONGOPT_SEED3000 +3 LONGOPT_BASE_APPLICATION3000+3 |
| 1375 | #define LONGOPT_INJECT_SECRETS3000 +4 LONGOPT_BASE_APPLICATION3000+4 |
| 1376 | #define LONGOPT_DISCARD_ALL_SECRETS3000 +5 LONGOPT_BASE_APPLICATION3000+5 |
| 1377 | #define LONGOPT_CAPTURE_COMMENT3000 +6 LONGOPT_BASE_APPLICATION3000+6 |
| 1378 | #define LONGOPT_DISCARD_CAPTURE_COMMENT3000 +7 LONGOPT_BASE_APPLICATION3000+7 |
| 1379 | #define LONGOPT_SET_UNUSED3000 +8 LONGOPT_BASE_APPLICATION3000+8 |
| 1380 | #define LONGOPT_DISCARD_PACKET_COMMENTS3000 +9 LONGOPT_BASE_APPLICATION3000+9 |
| 1381 | #define LONGOPT_EXTRACT_SECRETS3000 +10 LONGOPT_BASE_APPLICATION3000+10 |
| 1382 | #define LONGOPT_COMPRESS3000 +11 LONGOPT_BASE_APPLICATION3000+11 |
| 1383 | |
| 1384 | static const struct ws_option long_options[] = { |
| 1385 | {"novlan", ws_no_argument0, NULL((void*)0), LONGOPT_NO_VLAN3000 +1}, |
| 1386 | {"skip-radiotap-header", ws_no_argument0, NULL((void*)0), LONGOPT_SKIP_RADIOTAP_HEADER3000 +2}, |
| 1387 | {"seed", ws_required_argument1, NULL((void*)0), LONGOPT_SEED3000 +3}, |
| 1388 | {"inject-secrets", ws_required_argument1, NULL((void*)0), LONGOPT_INJECT_SECRETS3000 +4}, |
| 1389 | {"discard-all-secrets", ws_no_argument0, NULL((void*)0), LONGOPT_DISCARD_ALL_SECRETS3000 +5}, |
| 1390 | {"help", ws_no_argument0, NULL((void*)0), 'h'}, |
| 1391 | {"version", ws_no_argument0, NULL((void*)0), 'v'}, |
| 1392 | {"capture-comment", ws_required_argument1, NULL((void*)0), LONGOPT_CAPTURE_COMMENT3000 +6}, |
| 1393 | {"discard-capture-comment", ws_no_argument0, NULL((void*)0), LONGOPT_DISCARD_CAPTURE_COMMENT3000 +7}, |
| 1394 | {"set-unused", ws_no_argument0, NULL((void*)0), LONGOPT_SET_UNUSED3000 +8}, |
| 1395 | {"discard-packet-comments", ws_no_argument0, NULL((void*)0), LONGOPT_DISCARD_PACKET_COMMENTS3000 +9}, |
| 1396 | {"extract-secrets", ws_no_argument0, NULL((void*)0), LONGOPT_EXTRACT_SECRETS3000 +10}, |
| 1397 | {"compress", ws_required_argument1, NULL((void*)0), LONGOPT_COMPRESS3000 +11}, |
| 1398 | {0, 0, 0, 0 } |
| 1399 | }; |
| 1400 | |
| 1401 | char *p; |
| 1402 | uint32_t snaplen = 0; /* No limit */ |
| 1403 | chop_t chop = {0, 0, 0, 0, 0, 0}; /* No chop */ |
| 1404 | bool_Bool adjlen = false0; |
| 1405 | wtap_dumper *pdh = NULL((void*)0); |
| 1406 | GArray *idbs_seen = NULL((void*)0); |
| 1407 | uint64_t count = 1; |
| 1408 | uint64_t duplicate_count = 0; |
| 1409 | int64_t data_offset; |
| 1410 | uint8_t *buf; |
| 1411 | uint64_t read_count = 0; |
| 1412 | uint64_t split_packet_count = 0; |
| 1413 | uint64_t written_count = 0; |
| 1414 | char *filename = NULL((void*)0); |
| 1415 | bool_Bool ts_okay; |
| 1416 | nstime_t secs_per_block = NSTIME_INIT_UNSET{0, 2147483647}; |
| 1417 | int block_cnt = 0; |
| 1418 | nstime_t block_next = NSTIME_INIT_UNSET{0, 2147483647}; |
| 1419 | char *fprefix = NULL((void*)0); |
| 1420 | char *fsuffix = NULL((void*)0); |
| 1421 | uint32_t change_offset = 0; |
| 1422 | uint64_t max_packet_number = 0; |
| 1423 | GArray *dsb_types = NULL((void*)0); |
| 1424 | GPtrArray *dsb_filenames = NULL((void*)0); |
| 1425 | wtap_rec read_rec; |
| 1426 | wtap_dump_params params = WTAP_DUMP_PARAMS_INIT{.snaplen=0}; |
| 1427 | char *shb_user_appl; |
| 1428 | int ret = EXIT_SUCCESS0; |
| 1429 | bool_Bool valid_seed = false0; |
| 1430 | unsigned int seed = 0; |
| 1431 | bool_Bool edit_option_specified = false0; |
| 1432 | wtap_compression_type compression_type = WTAP_UNKNOWN_COMPRESSION; |
| 1433 | |
| 1434 | /* Set the program name. */ |
| 1435 | g_set_prgname("editcap"); |
| 1436 | |
| 1437 | cmdarg_err_init(stderr_cmdarg_err, stderr_cmdarg_err_cont); |
| 1438 | memset(&read_rec, 0, sizeof read_rec); |
| 1439 | |
| 1440 | /* Initialize log handler early so we can have proper logging during startup. */ |
| 1441 | ws_log_init(vcmdarg_err); |
| 1442 | |
| 1443 | /* Early logging command-line initialization. */ |
| 1444 | ws_log_parse_args(&argc, argv, vcmdarg_err, WS_EXIT_INVALID_OPTION1); |
| 1445 | |
| 1446 | ws_noisy("Finished log init and parsing command line log arguments")do { if (1) { ws_log_full("Main", LOG_LEVEL_NOISY, "editcap.c" , 1446, __func__, "Finished log init and parsing command line log arguments" ); } } while (0); |
| 1447 | |
| 1448 | #ifdef _WIN32 |
| 1449 | create_app_running_mutex(); |
| 1450 | #endif /* _WIN32 */ |
| 1451 | |
| 1452 | /* |
| 1453 | * Get credential information for later use. |
| 1454 | */ |
| 1455 | init_process_policies(); |
| 1456 | |
| 1457 | /* |
| 1458 | * Attempt to get the pathname of the directory containing the |
| 1459 | * executable file. |
| 1460 | */ |
| 1461 | configuration_init_error = configuration_init(argv[0]); |
| 1462 | if (configuration_init_error != NULL((void*)0)) { |
| 1463 | cmdarg_err("Can't get pathname of directory containing the editcap program: %s.", |
| 1464 | configuration_init_error); |
| 1465 | g_free(configuration_init_error); |
| 1466 | } |
| 1467 | |
| 1468 | /* Initialize the version information. */ |
| 1469 | ws_init_version_info("Editcap", NULL((void*)0), NULL((void*)0)); |
| 1470 | |
| 1471 | init_report_failure_message("editcap"); |
| 1472 | |
| 1473 | wtap_init(true1); |
| 1474 | |
| 1475 | /* Process the options */ |
| 1476 | while ((opt = ws_getopt_long(argc, argv, "a:A:B:c:C:dD:E:F:hi:I:Lo:rs:S:t:T:vVw:", long_options, NULL((void*)0))) != -1) { |
| 1477 | if (opt != LONGOPT_EXTRACT_SECRETS3000 +10 && opt != 'V') { |
| 1478 | edit_option_specified = true1; |
| 1479 | } |
| 1480 | switch (opt) { |
| 1481 | case LONGOPT_NO_VLAN3000 +1: |
| 1482 | { |
| 1483 | rem_vlan = true1; |
| 1484 | break; |
| 1485 | } |
| 1486 | |
| 1487 | case LONGOPT_SKIP_RADIOTAP_HEADER3000 +2: |
| 1488 | { |
| 1489 | skip_radiotap = true1; |
| 1490 | break; |
| 1491 | } |
| 1492 | |
| 1493 | case LONGOPT_SEED3000 +3: |
| 1494 | { |
| 1495 | if (sscanf(ws_optarg, "%u", &seed) != 1) { |
| 1496 | cmdarg_err("\"%s\" isn't a valid seed", ws_optarg); |
| 1497 | ret = WS_EXIT_INVALID_OPTION1; |
| 1498 | goto clean_exit; |
| 1499 | } |
| 1500 | valid_seed = true1; |
| 1501 | break; |
| 1502 | } |
| 1503 | |
| 1504 | case LONGOPT_INJECT_SECRETS3000 +4: |
| 1505 | { |
| 1506 | uint32_t secrets_type_id = 0; |
| 1507 | const char *secrets_filename = NULL((void*)0); |
| 1508 | if (strcmp("help", ws_optarg) == 0) { |
| 1509 | list_secrets_types(stdoutstdout); |
| 1510 | goto clean_exit; |
| 1511 | } |
| 1512 | char **splitted = g_strsplit(ws_optarg, ",", 2); |
| 1513 | if (splitted[0] && splitted[0][0] != '\0') { |
| 1514 | secrets_type_id = lookup_secrets_type(splitted[0]); |
| 1515 | if (secrets_type_id == 0) { |
| 1516 | cmdarg_err("\"%s\" isn't a valid secrets type", splitted[0]); |
| 1517 | g_strfreev(splitted); |
| 1518 | ret = WS_EXIT_INVALID_OPTION1; |
| 1519 | goto clean_exit; |
| 1520 | } |
| 1521 | secrets_filename = splitted[1]; |
| 1522 | } else { |
| 1523 | cmdarg_err("no secrets type was specified for --inject-secrets"); |
| 1524 | g_strfreev(splitted); |
| 1525 | ret = WS_EXIT_INVALID_OPTION1; |
| 1526 | goto clean_exit; |
| 1527 | } |
| 1528 | if (!dsb_filenames) { |
| 1529 | dsb_types = g_array_new(FALSE(0), FALSE(0), sizeof(uint32_t)); |
| 1530 | dsb_filenames = g_ptr_array_new_with_free_func(g_free); |
| 1531 | } |
| 1532 | g_array_append_val(dsb_types, secrets_type_id)g_array_append_vals (dsb_types, &(secrets_type_id), 1); |
| 1533 | g_ptr_array_add(dsb_filenames, g_strdup(secrets_filename)g_strdup_inline (secrets_filename)); |
| 1534 | g_strfreev(splitted); |
| 1535 | break; |
| 1536 | } |
| 1537 | |
| 1538 | case LONGOPT_DISCARD_ALL_SECRETS3000 +5: |
| 1539 | { |
| 1540 | discard_all_secrets = true1; |
| 1541 | break; |
| 1542 | } |
| 1543 | |
| 1544 | case LONGOPT_CAPTURE_COMMENT3000 +6: |
| 1545 | { |
| 1546 | /* |
| 1547 | * Make sure this would fit in a pcapng option. |
| 1548 | * |
| 1549 | * XXX - 65535 is the maximum size for an option in pcapng; |
| 1550 | * what if another capture file format supports larger |
| 1551 | * comments? |
| 1552 | */ |
| 1553 | if (strlen(ws_optarg) > 65535) { |
| 1554 | /* It doesn't fit. Tell the user and give up. */ |
| 1555 | cmdarg_err("Capture comment %u is too large to save in a capture file.", |
| 1556 | capture_comments->len + 1); |
| 1557 | ret = WS_EXIT_INVALID_OPTION1; |
| 1558 | goto clean_exit; |
| 1559 | } |
| 1560 | |
| 1561 | /* pcapng supports multiple comments, so support them here too. |
| 1562 | */ |
| 1563 | if (!capture_comments) { |
| 1564 | capture_comments = g_ptr_array_new_with_free_func(g_free); |
| 1565 | } |
| 1566 | g_ptr_array_add(capture_comments, g_strdup(ws_optarg)g_strdup_inline (ws_optarg)); |
| 1567 | break; |
| 1568 | } |
| 1569 | |
| 1570 | case LONGOPT_DISCARD_CAPTURE_COMMENT3000 +7: |
| 1571 | { |
| 1572 | discard_cap_comments = true1; |
| 1573 | break; |
| 1574 | } |
| 1575 | |
| 1576 | case LONGOPT_SET_UNUSED3000 +8: |
| 1577 | { |
| 1578 | set_unused = true1; |
| 1579 | break; |
| 1580 | } |
| 1581 | |
| 1582 | case LONGOPT_DISCARD_PACKET_COMMENTS3000 +9: |
| 1583 | { |
| 1584 | discard_pkt_comments = true1; |
| 1585 | break; |
| 1586 | } |
| 1587 | |
| 1588 | case LONGOPT_EXTRACT_SECRETS3000 +10: |
| 1589 | { |
| 1590 | do_extract_secrets = true1; |
| 1591 | /* XXX - Would it make sense to specify what types of secrets |
| 1592 | * to extract (or any)? |
| 1593 | */ |
| 1594 | break; |
| 1595 | } |
| 1596 | |
| 1597 | case LONGOPT_COMPRESS3000 +11: |
| 1598 | { |
| 1599 | compression_type = wtap_name_to_compression_type(ws_optarg); |
| 1600 | if (compression_type == WTAP_UNKNOWN_COMPRESSION) { |
| 1601 | cmdarg_err("\"%s\" isn't a valid output compression mode", |
| 1602 | ws_optarg); |
| 1603 | list_output_compression_types(); |
| 1604 | goto clean_exit; |
| 1605 | } |
| 1606 | break; |
| 1607 | } |
| 1608 | |
| 1609 | case 'a': |
| 1610 | { |
| 1611 | uint64_t frame_number; |
| 1612 | int string_start_index = 0; |
| 1613 | |
| 1614 | if ((sscanf(ws_optarg, "%" SCNu64"l" "u" ":%n", &frame_number, &string_start_index) < 1) || (string_start_index == 0)) { |
| 1615 | cmdarg_err("\"%s\" isn't a valid <frame>:<comment>", ws_optarg); |
| 1616 | ret = WS_EXIT_INVALID_OPTION1; |
| 1617 | goto clean_exit; |
| 1618 | } |
| 1619 | |
| 1620 | /* |
| 1621 | * Make sure this would fit in a pcapng option. |
| 1622 | * |
| 1623 | * XXX - 65535 is the maximum size for an option in pcapng; |
| 1624 | * what if another capture file format supports larger |
| 1625 | * comments? |
| 1626 | */ |
| 1627 | if (strlen(ws_optarg+string_start_index) > 65535) { |
| 1628 | /* It doesn't fit. Tell the user and give up. */ |
| 1629 | cmdarg_err("A comment for frame %" PRIu64"l" "u" " is too large to save in a capture file.", |
| 1630 | frame_number); |
| 1631 | ret = WS_EXIT_INVALID_OPTION1; |
| 1632 | goto clean_exit; |
| 1633 | } |
| 1634 | |
| 1635 | /* Lazily create the table */ |
| 1636 | if (!frames_user_comments) { |
| 1637 | frames_user_comments = g_tree_new_full(framenum_compare, NULL((void*)0), g_free, g_free); |
| 1638 | } |
| 1639 | |
| 1640 | /* Insert this entry (framenum -> comment) */ |
| 1641 | uint64_t *frame_p = g_new(uint64_t, 1)((uint64_t *) g_malloc_n ((1), sizeof (uint64_t))); |
| 1642 | *frame_p = frame_number; |
| 1643 | g_tree_replace(frames_user_comments, frame_p, g_strdup(ws_optarg+string_start_index)g_strdup_inline (ws_optarg+string_start_index)); |
| 1644 | break; |
| 1645 | } |
| 1646 | |
| 1647 | case 'A': |
| 1648 | case 'B': |
| 1649 | { |
| 1650 | nstime_t in_time; |
| 1651 | |
| 1652 | check_startstop = true1; |
| 1653 | if ((NULL((void*)0) != iso8601_to_nstime(&in_time, ws_optarg, ISO8601_DATETIME)) || (NULL((void*)0) != unix_epoch_to_nstime(&in_time, ws_optarg))) { |
| 1654 | if (opt == 'A') { |
| 1655 | nstime_copy(&starttime, &in_time); |
| 1656 | have_starttime = true1; |
| 1657 | } else { |
| 1658 | nstime_copy(&stoptime, &in_time); |
| 1659 | have_stoptime = true1; |
| 1660 | } |
| 1661 | break; |
| 1662 | } |
| 1663 | else { |
| 1664 | cmdarg_err("\"%s\" isn't a valid date and time", ws_optarg); |
| 1665 | ret = WS_EXIT_INVALID_OPTION1; |
| 1666 | goto clean_exit; |
| 1667 | } |
| 1668 | } |
| 1669 | |
| 1670 | case 'c': |
| 1671 | split_packet_count = get_nonzero_uint64(ws_optarg, "packet count"); |
| 1672 | break; |
| 1673 | |
| 1674 | case 'C': |
| 1675 | { |
| 1676 | int choplen = 0, chopoff = 0; |
| 1677 | |
| 1678 | switch (sscanf(ws_optarg, "%d:%d", &chopoff, &choplen)) { |
| 1679 | case 1: /* only the chop length was specified */ |
| 1680 | choplen = chopoff; |
| 1681 | chopoff = 0; |
| 1682 | break; |
| 1683 | |
| 1684 | case 2: /* both an offset and chop length was specified */ |
| 1685 | break; |
| 1686 | |
| 1687 | default: |
| 1688 | cmdarg_err("\"%s\" isn't a valid chop length or offset:length", ws_optarg); |
| 1689 | ret = WS_EXIT_INVALID_OPTION1; |
| 1690 | goto clean_exit; |
| 1691 | break; |
| 1692 | } |
| 1693 | |
| 1694 | if (choplen > 0) { |
| 1695 | chop.len_begin += choplen; |
| 1696 | if (chopoff > 0) |
| 1697 | chop.off_begin_pos += chopoff; |
| 1698 | else |
| 1699 | chop.off_begin_neg += chopoff; |
| 1700 | } else if (choplen < 0) { |
| 1701 | chop.len_end += choplen; |
| 1702 | if (chopoff > 0) |
| 1703 | chop.off_end_pos += chopoff; |
| 1704 | else |
| 1705 | chop.off_end_neg += chopoff; |
| 1706 | } |
| 1707 | break; |
| 1708 | } |
| 1709 | |
| 1710 | case 'd': |
| 1711 | dup_detect = true1; |
| 1712 | dup_detect_by_time = false0; |
| 1713 | dup_window = DEFAULT_DUP_DEPTH5; |
| 1714 | break; |
| 1715 | |
| 1716 | case 'D': |
| 1717 | dup_detect = true1; |
| 1718 | dup_detect_by_time = false0; |
| 1719 | dup_window = get_uint32(ws_optarg, "duplicate window"); |
| 1720 | if (dup_window > MAX_DUP_DEPTH1000000) { |
| 1721 | cmdarg_err("\"%d\" duplicate window value must be between 0 and %d inclusive.", |
| 1722 | dup_window, MAX_DUP_DEPTH1000000); |
| 1723 | ret = WS_EXIT_INVALID_OPTION1; |
| 1724 | goto clean_exit; |
| 1725 | } |
| 1726 | break; |
| 1727 | |
| 1728 | case 'E': |
| 1729 | err_prob = g_ascii_strtod(ws_optarg, &p); |
| 1730 | if (p == ws_optarg || err_prob < 0.0 || err_prob > 1.0) { |
| 1731 | cmdarg_err("probability \"%s\" must be between 0.0 and 1.0", ws_optarg); |
| 1732 | ret = WS_EXIT_INVALID_OPTION1; |
| 1733 | goto clean_exit; |
| 1734 | } |
| 1735 | break; |
| 1736 | |
| 1737 | case 'F': |
| 1738 | out_file_type_subtype = wtap_name_to_file_type_subtype(ws_optarg); |
| 1739 | if (out_file_type_subtype < 0) { |
| 1740 | cmdarg_err("\"%s\" isn't a valid capture file type\n", ws_optarg); |
| 1741 | list_capture_types(stderrstderr); |
| 1742 | ret = WS_EXIT_INVALID_OPTION1; |
| 1743 | goto clean_exit; |
| 1744 | } |
| 1745 | break; |
| 1746 | |
| 1747 | case 'h': |
| 1748 | show_help_header("Edit and/or translate the format of capture files."); |
| 1749 | print_usage(stdoutstdout); |
| 1750 | goto clean_exit; |
| 1751 | break; |
| 1752 | |
| 1753 | case 'i': /* break capture file based on time interval */ |
| 1754 | { |
| 1755 | double spb = get_positive_double(ws_optarg, "time interval"); |
| 1756 | if (spb == 0.0) { |
| 1757 | cmdarg_err("The specified interval is zero"); |
| 1758 | ret = WS_EXIT_INVALID_OPTION1; |
| 1759 | goto clean_exit; |
| 1760 | } |
| 1761 | |
| 1762 | double spb_int, spb_frac; |
| 1763 | spb_frac = modf(spb, &spb_int); |
| 1764 | secs_per_block.secs = (time_t) spb_int; |
| 1765 | secs_per_block.nsecs = (int) (NANOSECS_PER_SEC1000000000 * spb_frac); |
| 1766 | } |
| 1767 | break; |
| 1768 | |
| 1769 | case 'I': /* ignored_bytes at the beginning of the frame for duplications removal */ |
| 1770 | ignored_bytes = get_uint32(ws_optarg, "number of bytes to ignore"); |
| 1771 | break; |
| 1772 | |
| 1773 | case 'L': |
| 1774 | adjlen = true1; |
| 1775 | break; |
| 1776 | |
| 1777 | case 'o': |
| 1778 | change_offset = get_uint32(ws_optarg, "change offset"); |
| 1779 | break; |
| 1780 | |
| 1781 | case 'r': |
| 1782 | if (keep_em) { |
| 1783 | cmdarg_err("-r was specified twice"); |
| 1784 | ret = WS_EXIT_INVALID_OPTION1; |
| 1785 | goto clean_exit; |
| 1786 | } |
| 1787 | keep_em = true1; |
| 1788 | break; |
| 1789 | |
| 1790 | case 's': |
| 1791 | snaplen = get_nonzero_uint32(ws_optarg, "snapshot length"); |
| 1792 | break; |
| 1793 | |
| 1794 | case 'S': |
| 1795 | if (!set_strict_time_adj(ws_optarg)) { |
| 1796 | ret = WS_EXIT_INVALID_OPTION1; |
| 1797 | goto clean_exit; |
| 1798 | } |
| 1799 | do_strict_time_adjustment = true1; |
| 1800 | break; |
| 1801 | |
| 1802 | case 't': |
| 1803 | if (!set_time_adjustment(ws_optarg)) { |
| 1804 | ret = WS_EXIT_INVALID_OPTION1; |
| 1805 | goto clean_exit; |
| 1806 | } |
| 1807 | break; |
| 1808 | |
| 1809 | case 'T': |
| 1810 | out_frame_type = wtap_name_to_encap(ws_optarg); |
| 1811 | if (out_frame_type < 0) { |
| 1812 | cmdarg_err("\"%s\" isn't a valid encapsulation type\n", ws_optarg); |
| 1813 | list_encap_types(stderrstderr); |
| 1814 | ret = WS_EXIT_INVALID_OPTION1; |
| 1815 | goto clean_exit; |
| 1816 | } |
| 1817 | break; |
| 1818 | |
| 1819 | case 'V': |
| 1820 | if (verbose) { |
| 1821 | cmdarg_err("-V was specified twice"); |
| 1822 | ret = WS_EXIT_INVALID_OPTION1; |
| 1823 | goto clean_exit; |
| 1824 | } |
| 1825 | verbose = true1; |
| 1826 | break; |
| 1827 | |
| 1828 | case 'v': |
| 1829 | show_version(); |
| 1830 | goto clean_exit; |
| 1831 | break; |
| 1832 | |
| 1833 | case 'w': |
| 1834 | dup_detect = false0; |
| 1835 | dup_detect_by_time = true1; |
| 1836 | dup_window = MAX_DUP_DEPTH1000000; |
| 1837 | if (!set_rel_time(ws_optarg)) { |
| 1838 | ret = WS_EXIT_INVALID_OPTION1; |
| 1839 | goto clean_exit; |
| 1840 | } |
| 1841 | break; |
| 1842 | |
| 1843 | case '?': /* Bad options - print usage */ |
| 1844 | default: |
| 1845 | switch(ws_optopt) { |
| 1846 | case'F': |
| 1847 | list_capture_types(stdoutstdout); |
| 1848 | break; |
| 1849 | case'T': |
| 1850 | list_encap_types(stdoutstdout); |
| 1851 | break; |
| 1852 | case LONGOPT_COMPRESS3000 +11: |
| 1853 | list_output_compression_types(); |
| 1854 | break; |
| 1855 | default: |
| 1856 | print_usage(stderrstderr); |
| 1857 | ret = WS_EXIT_INVALID_OPTION1; |
| 1858 | break; |
| 1859 | } |
| 1860 | goto clean_exit; |
| 1861 | break; |
| 1862 | } |
| 1863 | } /* processing command-line options */ |
| 1864 | |
| 1865 | #ifdef DEBUG |
| 1866 | fprintf(stderrstderr, "Optind = %i, argc = %i\n", ws_optind, argc); |
| 1867 | #endif |
| 1868 | |
| 1869 | if ((argc - ws_optind) < 2) { |
| 1870 | print_usage(stderrstderr); |
| 1871 | ret = WS_EXIT_INVALID_OPTION1; |
| 1872 | goto clean_exit; |
| 1873 | } |
| 1874 | |
| 1875 | if (out_file_type_subtype == WTAP_FILE_TYPE_SUBTYPE_UNKNOWN-1) { |
| 1876 | /* default to pcapng */ |
| 1877 | out_file_type_subtype = wtap_pcapng_file_type_subtype(); |
| 1878 | } |
| 1879 | |
| 1880 | if (split_packet_count != 0 || !nstime_is_unset(&secs_per_block)) { |
| 1881 | if (!fileset_extract_prefix_suffix(argv[ws_optind+1], &fprefix, &fsuffix, &compression_type)) { |
| 1882 | ret = CANT_EXTRACT_PREFIX2; |
| 1883 | goto clean_exit; |
| 1884 | } |
| 1885 | } else if (compression_type == WTAP_UNKNOWN_COMPRESSION) { |
| 1886 | /* An explicitly specified compression type overrides filename |
| 1887 | * magic. (Should we allow specifying "no" compression with, e.g. |
| 1888 | * a ".gz" extension?) */ |
| 1889 | const char *sfx = strrchr(argv[ws_optind+1], '.'); |
| 1890 | if (sfx) { |
| 1891 | compression_type = wtap_extension_to_compression_type(sfx + 1); |
| 1892 | } |
| 1893 | } |
| 1894 | |
| 1895 | if (compression_type == WTAP_UNKNOWN_COMPRESSION) { |
| 1896 | compression_type = WTAP_UNCOMPRESSED; |
| 1897 | } |
| 1898 | |
| 1899 | if (!wtap_can_write_compression_type(compression_type)) { |
| 1900 | cmdarg_err("Output files can't be written as %s", |
| 1901 | wtap_compression_type_description(compression_type)); |
| 1902 | ret = WS_EXIT_INVALID_OPTION1; |
| 1903 | goto clean_exit; |
| 1904 | } |
| 1905 | |
| 1906 | if (compression_type != WTAP_UNCOMPRESSED && !wtap_dump_can_compress(out_file_type_subtype)) { |
| 1907 | cmdarg_err("The file format %s can't be written to output compressed format", |
| 1908 | wtap_file_type_subtype_name(out_file_type_subtype)); |
| 1909 | ret = WS_EXIT_INVALID_OPTION1; |
| 1910 | goto clean_exit; |
| 1911 | } |
| 1912 | |
| 1913 | if (err_prob >= 0.0) { |
| 1914 | if (!valid_seed) { |
| 1915 | seed = (unsigned int) (time(NULL((void*)0)) + ws_getpidgetpid()); |
| 1916 | } |
| 1917 | if (verbose) { |
| 1918 | fprintf(stderrstderr, "Using seed %u\n", seed); |
| 1919 | } |
| 1920 | srand(seed); |
| 1921 | } |
| 1922 | |
| 1923 | if (have_starttime && have_stoptime && |
| 1924 | nstime_cmp(&starttime, &stoptime) > 0) { |
| 1925 | cmdarg_err("start time is after the stop time"); |
| 1926 | ret = WS_EXIT_INVALID_OPTION1; |
| 1927 | goto clean_exit; |
| 1928 | } |
| 1929 | |
| 1930 | if (split_packet_count != 0 && !nstime_is_unset(&secs_per_block)) { |
| 1931 | cmdarg_err("can't split on both packet count and time interval"); |
| 1932 | cmdarg_err_cont("at the same time"); |
| 1933 | ret = WS_EXIT_INVALID_OPTION1; |
| 1934 | goto clean_exit; |
| 1935 | } |
| 1936 | |
| 1937 | wth = wtap_open_offline(argv[ws_optind], WTAP_TYPE_AUTO0, &read_err, &read_err_info, false0); |
| 1938 | |
| 1939 | if (!wth) { |
| 1940 | cfile_open_failure_message(argv[ws_optind], read_err, read_err_info); |
| 1941 | ret = WS_EXIT_INVALID_FILE3; |
| 1942 | goto clean_exit; |
| 1943 | } |
| 1944 | |
| 1945 | if (verbose) { |
| 1946 | fprintf(stderrstderr, "File %s is a %s capture file.\n", argv[ws_optind], |
| 1947 | wtap_file_type_subtype_description(wtap_file_type_subtype(wth))); |
| 1948 | } |
| 1949 | |
| 1950 | if (skip_radiotap) { |
| 1951 | if (ignored_bytes != 0) { |
| 1952 | cmdarg_err("can't skip radiotap headers and %d byte(s)", ignored_bytes); |
| 1953 | cmdarg_err_cont("at the start of packet at the same time"); |
| 1954 | ret = WS_EXIT_INVALID_OPTION1; |
| 1955 | goto clean_exit; |
| 1956 | } |
| 1957 | |
| 1958 | if (wtap_file_encap(wth) != WTAP_ENCAP_IEEE_802_11_RADIOTAP23) { |
| 1959 | cmdarg_err("can't skip radiotap header because input file has non-radiotap packets"); |
| 1960 | if (wtap_file_encap(wth) == WTAP_ENCAP_PER_PACKET-1) { |
| 1961 | cmdarg_err_cont("expected '%s', not all packets are necessarily that type", |
| 1962 | wtap_encap_description(WTAP_ENCAP_IEEE_802_11_RADIOTAP23)); |
| 1963 | } else { |
| 1964 | cmdarg_err_cont("expected '%s', packets are '%s'", |
| 1965 | wtap_encap_description(WTAP_ENCAP_IEEE_802_11_RADIOTAP23), |
| 1966 | wtap_encap_description(wtap_file_encap(wth))); |
| 1967 | } |
| 1968 | ret = WS_EXIT_INVALID_OPTION1; |
| 1969 | goto clean_exit; |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | if (do_extract_secrets) { |
| 1974 | if (edit_option_specified) { |
| 1975 | cmdarg_err("can't extract secrets and use other options at the same time"); |
| 1976 | ret = WS_EXIT_INVALID_OPTION1; |
| 1977 | goto clean_exit; |
| 1978 | } |
| 1979 | if (compression_type != WTAP_UNCOMPRESSED) { |
| 1980 | cmdarg_err("compression isn't supported for extracting secrets"); |
| 1981 | ret = WS_EXIT_INVALID_OPTION1; |
| 1982 | goto clean_exit; |
| 1983 | } |
| 1984 | ret = extract_secrets(wth, argv[ws_optind+1], &read_err, &read_err_info); |
| 1985 | |
| 1986 | if (read_err != 0) { |
| 1987 | /* Print a message noting that the read failed somewhere along the |
| 1988 | * line. */ |
| 1989 | cfile_read_failure_message(argv[ws_optind], read_err, read_err_info); |
| 1990 | } |
| 1991 | goto clean_exit; |
| 1992 | } |
| 1993 | |
| 1994 | wtap_dump_params_init_no_idbs(¶ms, wth); |
| 1995 | |
| 1996 | /* |
| 1997 | * Discard any secrets we read in while opening the file. |
| 1998 | */ |
| 1999 | if (discard_all_secrets) { |
| 2000 | wtap_dump_params_discard_decryption_secrets(¶ms); |
| 2001 | } |
| 2002 | |
| 2003 | /* |
| 2004 | * Discard capture file comments. |
| 2005 | */ |
| 2006 | if (discard_cap_comments) { |
| 2007 | for (unsigned b = 0; b < params.shb_hdrs->len; b++) { |
| 2008 | wtap_block_t shb = g_array_index(params.shb_hdrs, wtap_block_t, b)(((wtap_block_t*) (void *) (params.shb_hdrs)->data) [(b)]); |
| 2009 | while (WTAP_OPTTYPE_SUCCESS == wtap_block_remove_nth_option_instance(shb, OPT_COMMENT1, 0)) { |
| 2010 | ; |
| 2011 | } |
| 2012 | } |
| 2013 | } |
| 2014 | |
| 2015 | /* |
| 2016 | * Add new capture file comments. |
| 2017 | */ |
| 2018 | if (capture_comments != NULL((void*)0)) { |
| 2019 | for (unsigned b = 0; b < params.shb_hdrs->len; b++) { |
| 2020 | wtap_block_t shb = g_array_index(params.shb_hdrs, wtap_block_t, b)(((wtap_block_t*) (void *) (params.shb_hdrs)->data) [(b)]); |
| 2021 | for (unsigned c = 0; c < capture_comments->len; c++) { |
| 2022 | char *comment = (char *)g_ptr_array_index(capture_comments, c)((capture_comments)->pdata)[c]; |
| 2023 | wtap_block_add_string_option(shb, OPT_COMMENT1, comment, strlen(comment)); |
| 2024 | } |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | if (dsb_filenames) { |
| 2029 | for (unsigned k = 0; k < dsb_filenames->len; k++) { |
| 2030 | uint32_t secrets_type_id = g_array_index(dsb_types, uint32_t, k)(((uint32_t*) (void *) (dsb_types)->data) [(k)]); |
| 2031 | const char *secrets_filename = (const char *)g_ptr_array_index(dsb_filenames, k)((dsb_filenames)->pdata)[k]; |
| 2032 | char *data; |
| 2033 | size_t data_len; |
| 2034 | wtap_block_t block; |
| 2035 | wtapng_dsb_mandatory_t *dsb; |
| 2036 | GError *err = NULL((void*)0); |
| 2037 | |
| 2038 | if (!g_file_get_contents(secrets_filename, &data, &data_len, &err)) { |
| 2039 | cmdarg_err("\"%s\" could not be read: %s", secrets_filename, err->message); |
| 2040 | g_clear_error(&err); |
| 2041 | ret = WS_EXIT_INVALID_OPTION1; |
| 2042 | goto clean_exit; |
| 2043 | } |
| 2044 | if (data_len == 0) { |
| 2045 | cmdarg_err("\"%s\" is an empty file, ignoring", secrets_filename); |
| 2046 | g_free(data); |
| 2047 | continue; |
| 2048 | } |
| 2049 | if (data_len >= INT_MAX2147483647) { |
| 2050 | cmdarg_err("\"%s\" is too large, ignoring", secrets_filename); |
| 2051 | g_free(data); |
| 2052 | continue; |
| 2053 | } |
| 2054 | |
| 2055 | /* Warn for badly formatted files, but proceed anyway. */ |
| 2056 | validate_secrets_file(secrets_filename, secrets_type_id, data); |
| 2057 | |
| 2058 | block = wtap_block_create(WTAP_BLOCK_DECRYPTION_SECRETS); |
| 2059 | dsb = (wtapng_dsb_mandatory_t *)wtap_block_get_mandatory_data(block); |
| 2060 | dsb->secrets_type = secrets_type_id; |
| 2061 | dsb->secrets_len = (unsigned)data_len; |
| 2062 | dsb->secrets_data = data; |
| 2063 | if (params.dsbs_initial == NULL((void*)0)) { |
| 2064 | params.dsbs_initial = g_array_new(FALSE(0), FALSE(0), sizeof(wtap_block_t)); |
| 2065 | } |
| 2066 | g_array_append_val(params.dsbs_initial, block)g_array_append_vals (params.dsbs_initial, &(block), 1); |
| 2067 | } |
| 2068 | } |
| 2069 | |
| 2070 | /* |
| 2071 | * If an encapsulation type was specified, override the encapsulation |
| 2072 | * type of the input file. |
| 2073 | */ |
| 2074 | if (out_frame_type != -2) |
| 2075 | params.encap = out_frame_type; |
| 2076 | |
| 2077 | /* |
| 2078 | * If a snapshot length was specified, and it's less than the snapshot |
| 2079 | * length of the input file, override the snapshot length of the input |
| 2080 | * file. |
| 2081 | */ |
| 2082 | if (snaplen != 0 && snaplen < wtap_snapshot_length(wth)) |
| 2083 | params.snaplen = snaplen; |
| 2084 | |
| 2085 | /* |
| 2086 | * Now process the arguments following the input and output file |
| 2087 | * names, if any; they specify packets to include/exclude. |
| 2088 | */ |
| 2089 | for (i = ws_optind + 2; i < argc; i++) |
| 2090 | if (add_selection(argv[i], &max_packet_number) == false0) |
| 2091 | break; |
| 2092 | |
| 2093 | if (keep_em && max_selected == 0) { |
| 2094 | cmdarg_err("must specify packets to keep when using -r"); |
| 2095 | ret = WS_EXIT_INVALID_OPTION1; |
| 2096 | goto clean_exit; |
| 2097 | } |
| 2098 | |
| 2099 | if (!keep_em) |
| 2100 | max_packet_number = UINT64_MAX(18446744073709551615UL); |
| 2101 | |
| 2102 | if (dup_detect || dup_detect_by_time) { |
| 2103 | for (i = 0; i < dup_window; i++) { |
| 2104 | memset(&fd_hash[i].digest, 0, 16); |
| 2105 | fd_hash[i].len = 0; |
| 2106 | nstime_set_unset(&fd_hash[i].frame_time); |
| 2107 | } |
| 2108 | } |
| 2109 | |
| 2110 | /* Set up an array of all IDBs seen */ |
| 2111 | idbs_seen = g_array_new(FALSE(0), FALSE(0), sizeof(wtap_block_t)); |
| 2112 | |
| 2113 | /* Read all of the packets in turn */ |
| 2114 | wtap_rec_init(&read_rec, 1514); |
| 2115 | while (wtap_read(wth, &read_rec, &read_err, &read_err_info, &data_offset)) { |
| 2116 | /* |
| 2117 | * XXX - what about non-packet records in the file after this? |
| 2118 | * NRBs, DSBs, and ISBs are now written when wtap_dump_close() calls |
| 2119 | * pcapng_dump_finish(), and we handle IDBs below, but what about |
| 2120 | * custom blocks? |
| 2121 | */ |
| 2122 | if (max_packet_number <= read_count) |
| 2123 | break; |
| 2124 | |
| 2125 | read_count++; |
| 2126 | |
| 2127 | /* Extra actions for the first packet */ |
| 2128 | if (read_count == 1) { |
| 2129 | if (split_packet_count != 0 || !nstime_is_unset(&secs_per_block)) { |
| 2130 | filename = fileset_get_filename_by_pattern(block_cnt++, |
| 2131 | (read_rec.presence_flags & WTAP_HAS_TS0x00000001) ? &read_rec.ts : NULL((void*)0), |
| 2132 | fprefix, fsuffix); |
| 2133 | } else { |
| 2134 | filename = g_strdup(argv[ws_optind+1])g_strdup_inline (argv[ws_optind+1]); |
| 2135 | } |
| 2136 | ws_assert(filename)do { if ((1) && !(filename)) ws_log_fatal_full("Main" , LOG_LEVEL_ERROR, "editcap.c", 2136, __func__, "assertion failed: %s" , "filename"); } while (0); |
| 2137 | |
| 2138 | /* If we don't have an application name add one */ |
| 2139 | if (wtap_block_get_string_option_value(g_array_index(params.shb_hdrs, wtap_block_t, 0)(((wtap_block_t*) (void *) (params.shb_hdrs)->data) [(0)]), OPT_SHB_USERAPPL4, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) { |
| 2140 | wtap_block_add_string_option_format(g_array_index(params.shb_hdrs, wtap_block_t, 0)(((wtap_block_t*) (void *) (params.shb_hdrs)->data) [(0)]), OPT_SHB_USERAPPL4, "%s", get_appname_and_version()); |
| 2141 | } |
| 2142 | |
| 2143 | pdh = editcap_dump_open(filename, ¶ms, idbs_seen, &write_err, |
| 2144 | &write_err_info, compression_type); |
| 2145 | |
| 2146 | if (pdh == NULL((void*)0)) { |
| 2147 | cfile_dump_open_failure_message(filename, |
| 2148 | write_err, write_err_info, |
| 2149 | out_file_type_subtype); |
| 2150 | ret = WS_EXIT_INVALID_FILE3; |
| 2151 | goto clean_exit; |
| 2152 | } |
| 2153 | } /* first packet only handling */ |
| 2154 | |
| 2155 | /* |
| 2156 | * Process whatever IDBs we haven't seen yet. |
| 2157 | */ |
| 2158 | if (!process_new_idbs(wth, pdh, idbs_seen, &write_err, &write_err_info)) { |
| 2159 | cfile_write_failure_message(argv[ws_optind], filename, |
| 2160 | write_err, write_err_info, |
| 2161 | read_count, |
| 2162 | out_file_type_subtype); |
| 2163 | ret = DUMP_ERROR2; |
| 2164 | |
| 2165 | /* |
| 2166 | * Close the dump file, but don't report an error |
| 2167 | * or set the exit code, as we've already reported |
| 2168 | * an error. |
| 2169 | */ |
| 2170 | wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info); |
| 2171 | goto clean_exit; |
| 2172 | } |
| 2173 | |
| 2174 | buf = ws_buffer_start_ptr(&read_rec.data); |
| 2175 | |
| 2176 | /* |
| 2177 | * Not all packets have time stamps. Only process the time |
| 2178 | * stamp if we have one. |
| 2179 | */ |
| 2180 | if (read_rec.presence_flags & WTAP_HAS_TS0x00000001) { |
| 2181 | if (!nstime_is_unset(&secs_per_block)) { |
| 2182 | if (nstime_is_unset(&block_next)) { |
| 2183 | block_next = read_rec.ts; |
| 2184 | nstime_add(&block_next, &secs_per_block)nstime_sum(&block_next, &block_next, &secs_per_block ); |
| 2185 | } |
| 2186 | while (nstime_cmp(&read_rec.ts, &block_next) > 0) { /* time for the next file */ |
| 2187 | |
| 2188 | /* We presumably want to write the DSBs from files given |
| 2189 | * on the command line to every file. |
| 2190 | */ |
| 2191 | wtap_block_array_ref(params.dsbs_initial); |
| 2192 | if (!wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info)) { |
| 2193 | cfile_close_failure_message(filename, write_err, |
| 2194 | write_err_info); |
| 2195 | ret = WRITE_ERROR2; |
| 2196 | goto clean_exit; |
| 2197 | } |
| 2198 | g_free(filename); |
| 2199 | /* Use the interval start time for the filename. */ |
| 2200 | filename = fileset_get_filename_by_pattern(block_cnt++, &block_next, fprefix, fsuffix); |
| 2201 | ws_assert(filename)do { if ((1) && !(filename)) ws_log_fatal_full("Main" , LOG_LEVEL_ERROR, "editcap.c", 2201, __func__, "assertion failed: %s" , "filename"); } while (0); |
| 2202 | nstime_add(&block_next, &secs_per_block)nstime_sum(&block_next, &block_next, &secs_per_block ); /* reset for next interval */ |
| 2203 | |
| 2204 | if (verbose) |
| 2205 | fprintf(stderrstderr, "Continuing writing in file %s\n", filename); |
| 2206 | |
| 2207 | pdh = editcap_dump_open(filename, ¶ms, idbs_seen, |
| 2208 | &write_err, &write_err_info, compression_type); |
| 2209 | |
| 2210 | if (pdh == NULL((void*)0)) { |
| 2211 | cfile_dump_open_failure_message(filename, |
| 2212 | write_err, |
| 2213 | write_err_info, |
| 2214 | out_file_type_subtype); |
| 2215 | ret = WS_EXIT_INVALID_FILE3; |
| 2216 | goto clean_exit; |
| 2217 | } |
| 2218 | } |
| 2219 | } |
| 2220 | } /* time stamp handling */ |
| 2221 | |
| 2222 | if (split_packet_count != 0) { |
| 2223 | /* time for the next file? */ |
| 2224 | if (written_count > 0 && (written_count % split_packet_count) == 0) { |
| 2225 | |
| 2226 | /* We presumably want to write the DSBs from files given |
| 2227 | * on the command line to every file. |
| 2228 | */ |
| 2229 | wtap_block_array_ref(params.dsbs_initial); |
| 2230 | if (!wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info)) { |
| 2231 | cfile_close_failure_message(filename, write_err, |
| 2232 | write_err_info); |
| 2233 | ret = WRITE_ERROR2; |
| 2234 | goto clean_exit; |
| 2235 | } |
| 2236 | |
| 2237 | g_free(filename); |
| 2238 | filename = fileset_get_filename_by_pattern(block_cnt++, |
| 2239 | (read_rec.presence_flags & WTAP_HAS_TS0x00000001) ? &read_rec.ts : NULL((void*)0), |
| 2240 | fprefix, fsuffix); |
| 2241 | ws_assert(filename)do { if ((1) && !(filename)) ws_log_fatal_full("Main" , LOG_LEVEL_ERROR, "editcap.c", 2241, __func__, "assertion failed: %s" , "filename"); } while (0); |
| 2242 | |
| 2243 | if (verbose) |
| 2244 | fprintf(stderrstderr, "Continuing writing in file %s\n", filename); |
| 2245 | |
| 2246 | pdh = editcap_dump_open(filename, ¶ms, idbs_seen, |
| 2247 | &write_err, &write_err_info, compression_type); |
| 2248 | if (pdh == NULL((void*)0)) { |
| 2249 | cfile_dump_open_failure_message(filename, |
| 2250 | write_err, write_err_info, |
| 2251 | out_file_type_subtype); |
| 2252 | ret = WS_EXIT_INVALID_FILE3; |
| 2253 | goto clean_exit; |
| 2254 | } |
| 2255 | } |
| 2256 | } /* split packet handling */ |
| 2257 | |
| 2258 | if (check_startstop) { |
| 2259 | ts_okay = false0; |
| 2260 | /* |
| 2261 | * Is the packet in the selected timeframe? |
| 2262 | * If the packet has no time stamp, the answer is "no". |
| 2263 | */ |
| 2264 | if (read_rec.presence_flags & WTAP_HAS_TS0x00000001) { |
| 2265 | if (have_starttime && have_stoptime) { |
| 2266 | ts_okay = nstime_cmp(&read_rec.ts, &starttime) >= 0 && |
| 2267 | nstime_cmp(&read_rec.ts, &stoptime) < 0; |
| 2268 | } else if (have_starttime) { |
| 2269 | ts_okay = nstime_cmp(&read_rec.ts, &starttime) >= 0; |
| 2270 | } else if (have_stoptime) { |
| 2271 | ts_okay = nstime_cmp(&read_rec.ts, &stoptime) < 0; |
| 2272 | } |
| 2273 | } |
| 2274 | } else { |
| 2275 | /* |
| 2276 | * No selected timeframe, so all packets are "in the |
| 2277 | * selected timeframe". |
| 2278 | */ |
| 2279 | ts_okay = true1; |
| 2280 | } |
| 2281 | |
| 2282 | if (ts_okay && ((!selected(count) && !keep_em) |
| 2283 | || (selected(count) && keep_em))) { |
| 2284 | /* Write the record, possibly after modifying it. */ |
| 2285 | |
| 2286 | if (verbose && !dup_detect && !dup_detect_by_time) |
| 2287 | fprintf(stderrstderr, "Packet: %" PRIu64"l" "u" "\n", count); |
| 2288 | |
| 2289 | if (read_rec.presence_flags & WTAP_HAS_TS0x00000001) { |
| 2290 | /* Do we adjust timestamps to ensure strict chronological |
| 2291 | * order? */ |
| 2292 | if (do_strict_time_adjustment) { |
| 2293 | if (previous_time.secs || previous_time.nsecs) { |
| 2294 | if (!strict_time_adj.is_negative) { |
| 2295 | nstime_t current; |
| 2296 | nstime_t delta; |
| 2297 | |
| 2298 | current = read_rec.ts; |
| 2299 | |
| 2300 | nstime_delta(&delta, ¤t, &previous_time); |
| 2301 | |
| 2302 | if (delta.secs < 0 || delta.nsecs < 0) { |
| 2303 | /* |
| 2304 | * A negative delta indicates that the current packet |
| 2305 | * has an absolute timestamp less than the previous packet |
| 2306 | * that it is being compared to. This is NOT a normal |
| 2307 | * situation since trace files usually have packets in |
| 2308 | * chronological order (oldest to newest). |
| 2309 | */ |
| 2310 | /* fprintf(stderr, "++out of order, need to adjust this packet!\n"); */ |
| 2311 | read_rec.ts.secs = previous_time.secs + strict_time_adj.tv.secs; |
| 2312 | read_rec.ts.nsecs = previous_time.nsecs; |
| 2313 | if (read_rec.ts.nsecs + strict_time_adj.tv.nsecs >= ONE_BILLION1000000000) { |
| 2314 | /* carry */ |
| 2315 | read_rec.ts.secs++; |
| 2316 | read_rec.ts.nsecs += strict_time_adj.tv.nsecs - ONE_BILLION1000000000; |
| 2317 | } else { |
| 2318 | read_rec.ts.nsecs += strict_time_adj.tv.nsecs; |
| 2319 | } |
| 2320 | } |
| 2321 | } else { |
| 2322 | /* |
| 2323 | * A negative strict time adjustment is requested. |
| 2324 | * Unconditionally set each timestamp to previous |
| 2325 | * packet's timestamp plus delta. |
| 2326 | */ |
| 2327 | read_rec.ts.secs = previous_time.secs + strict_time_adj.tv.secs; |
| 2328 | read_rec.ts.nsecs = previous_time.nsecs; |
| 2329 | if (read_rec.ts.nsecs + strict_time_adj.tv.nsecs >= ONE_BILLION1000000000) { |
| 2330 | /* carry */ |
| 2331 | read_rec.ts.secs++; |
| 2332 | read_rec.ts.nsecs += strict_time_adj.tv.nsecs - ONE_BILLION1000000000; |
| 2333 | } else { |
| 2334 | read_rec.ts.nsecs += strict_time_adj.tv.nsecs; |
| 2335 | } |
| 2336 | } |
| 2337 | } |
| 2338 | previous_time = read_rec.ts; |
| 2339 | } |
| 2340 | |
| 2341 | if (time_adj.tv.secs != 0) { |
| 2342 | if (time_adj.is_negative) |
| 2343 | read_rec.ts.secs -= time_adj.tv.secs; |
| 2344 | else |
| 2345 | read_rec.ts.secs += time_adj.tv.secs; |
| 2346 | } |
| 2347 | |
| 2348 | if (time_adj.tv.nsecs != 0) { |
| 2349 | if (time_adj.is_negative) { /* subtract */ |
| 2350 | if (read_rec.ts.nsecs < time_adj.tv.nsecs) { /* borrow */ |
| 2351 | read_rec.ts.secs--; |
| 2352 | read_rec.ts.nsecs += ONE_BILLION1000000000; |
| 2353 | } |
| 2354 | read_rec.ts.nsecs -= time_adj.tv.nsecs; |
| 2355 | } else { /* add */ |
| 2356 | if (read_rec.ts.nsecs + time_adj.tv.nsecs >= ONE_BILLION1000000000) { |
| 2357 | /* carry */ |
| 2358 | read_rec.ts.secs++; |
| 2359 | read_rec.ts.nsecs += time_adj.tv.nsecs - ONE_BILLION1000000000; |
| 2360 | } else { |
| 2361 | read_rec.ts.nsecs += time_adj.tv.nsecs; |
| 2362 | } |
| 2363 | } |
| 2364 | } |
| 2365 | } /* time stamp adjustment */ |
| 2366 | |
| 2367 | if (read_rec.rec_type == REC_TYPE_PACKET0) { |
| 2368 | if (snaplen != 0) { |
| 2369 | /* Limit capture length to snaplen */ |
| 2370 | if (read_rec.rec_header.packet_header.caplen > snaplen) { |
| 2371 | read_rec.rec_header.packet_header.caplen = snaplen; |
| 2372 | } |
| 2373 | /* If -L, also set reported length to snaplen */ |
| 2374 | if (adjlen && read_rec.rec_header.packet_header.len > snaplen) { |
| 2375 | read_rec.rec_header.packet_header.len = snaplen; |
| 2376 | } |
| 2377 | } |
| 2378 | |
| 2379 | /* |
| 2380 | * If an encapsulation type was specified, override the |
| 2381 | * encapsulation type of the packet. |
| 2382 | */ |
| 2383 | if (out_frame_type != -2) { |
| 2384 | read_rec.rec_header.packet_header.pkt_encap = out_frame_type; |
| 2385 | } |
| 2386 | |
| 2387 | /* |
| 2388 | * CHOP |
| 2389 | */ |
| 2390 | handle_chopping(chop, &read_rec.rec_header.packet_header, |
| 2391 | &buf, adjlen); |
| 2392 | |
| 2393 | /* set unused info */ |
| 2394 | if (set_unused) { |
| 2395 | /* set unused bytes to zero so that duplicates check ignores unused bytes */ |
| 2396 | set_unused_info(&read_rec.rec_header.packet_header, buf); |
| 2397 | } |
| 2398 | |
| 2399 | /* remove vlan info */ |
| 2400 | if (rem_vlan) { |
| 2401 | remove_vlan_info(&read_rec.rec_header.packet_header, buf); |
| 2402 | } |
| 2403 | |
| 2404 | /* suppress duplicates by packet window */ |
| 2405 | if (dup_detect) { |
| 2406 | if (is_duplicate(buf, read_rec.rec_header.packet_header.caplen)) { |
| 2407 | if (verbose) { |
| 2408 | fprintf(stderrstderr, "Skipped: %" PRIu64"l" "u" ", Len: %u, MD5 Hash: ", |
| 2409 | count, |
| 2410 | read_rec.rec_header.packet_header.caplen); |
| 2411 | for (i = 0; i < 16; i++) |
| 2412 | fprintf(stderrstderr, "%02x", |
| 2413 | (unsigned char)fd_hash[cur_dup_entry].digest[i]); |
| 2414 | fprintf(stderrstderr, "\n"); |
| 2415 | } |
| 2416 | duplicate_count++; |
| 2417 | count++; |
| 2418 | continue; |
| 2419 | } else { |
| 2420 | if (verbose) { |
| 2421 | fprintf(stderrstderr, "Packet: %" PRIu64"l" "u" ", Len: %u, MD5 Hash: ", |
| 2422 | count, |
| 2423 | read_rec.rec_header.packet_header.caplen); |
| 2424 | for (i = 0; i < 16; i++) |
| 2425 | fprintf(stderrstderr, "%02x", |
| 2426 | (unsigned char)fd_hash[cur_dup_entry].digest[i]); |
| 2427 | fprintf(stderrstderr, "\n"); |
| 2428 | } |
| 2429 | } |
| 2430 | } /* suppression of duplicates */ |
| 2431 | |
| 2432 | if (read_rec.presence_flags & WTAP_HAS_TS0x00000001) { |
| 2433 | /* suppress duplicates by time window */ |
| 2434 | if (dup_detect_by_time) { |
| 2435 | nstime_t current; |
| 2436 | |
| 2437 | current.secs = read_rec.ts.secs; |
| 2438 | current.nsecs = read_rec.ts.nsecs; |
| 2439 | |
| 2440 | if (is_duplicate_rel_time(buf, |
| 2441 | read_rec.rec_header.packet_header.caplen, |
| 2442 | ¤t)) { |
| 2443 | if (verbose) { |
| 2444 | fprintf(stderrstderr, "Skipped: %" PRIu64"l" "u" ", Len: %u, MD5 Hash: ", |
| 2445 | count, |
| 2446 | read_rec.rec_header.packet_header.caplen); |
| 2447 | for (i = 0; i < 16; i++) |
| 2448 | fprintf(stderrstderr, "%02x", |
| 2449 | (unsigned char)fd_hash[cur_dup_entry].digest[i]); |
| 2450 | fprintf(stderrstderr, "\n"); |
| 2451 | } |
| 2452 | duplicate_count++; |
| 2453 | count++; |
| 2454 | continue; |
| 2455 | } else { |
| 2456 | if (verbose) { |
| 2457 | fprintf(stderrstderr, "Packet: %" PRIu64"l" "u" ", Len: %u, MD5 Hash: ", |
| 2458 | count, |
| 2459 | read_rec.rec_header.packet_header.caplen); |
| 2460 | for (i = 0; i < 16; i++) |
| 2461 | fprintf(stderrstderr, "%02x", |
| 2462 | (unsigned char)fd_hash[cur_dup_entry].digest[i]); |
| 2463 | fprintf(stderrstderr, "\n"); |
| 2464 | } |
| 2465 | } |
| 2466 | } |
| 2467 | } /* suppress duplicates by time window */ |
| 2468 | } |
| 2469 | |
| 2470 | /* Random error mutation */ |
| 2471 | if (err_prob > 0.0) { |
| 2472 | mutate_packet_data(&read_rec, buf, change_offset, count); |
| 2473 | } /* random error mutation */ |
| 2474 | |
| 2475 | /* Discard all packet comments when writing */ |
| 2476 | if (discard_pkt_comments) { |
| 2477 | while (WTAP_OPTTYPE_SUCCESS == wtap_block_remove_nth_option_instance(read_rec.block, OPT_COMMENT1, 0)) { |
| 2478 | read_rec.block_was_modified = true1; |
| 2479 | } |
| 2480 | } |
| 2481 | |
| 2482 | /* Find a packet comment we may need to write */ |
| 2483 | if (frames_user_comments) { |
| 2484 | const char *comment = |
| 2485 | (const char*)g_tree_lookup(frames_user_comments, &read_count); |
| 2486 | if (comment != NULL((void*)0)) { |
| 2487 | /* Erase any existing comments before adding the new one */ |
| 2488 | while (WTAP_OPTTYPE_SUCCESS == wtap_block_remove_nth_option_instance(read_rec.block, OPT_COMMENT1, 0)) { |
| 2489 | read_rec.block_was_modified = true1; |
| 2490 | } |
| 2491 | |
| 2492 | /* The comment is not modified by dumper, cast away. */ |
| 2493 | wtap_block_add_string_option(read_rec.block, OPT_COMMENT1, (char *)comment, strlen((char *)comment)); |
| 2494 | read_rec.block_was_modified = true1; |
| 2495 | } else { |
| 2496 | read_rec.block_was_modified = false0; |
| 2497 | } |
| 2498 | } |
| 2499 | |
| 2500 | if (discard_all_secrets) { |
| 2501 | /* |
| 2502 | * Discard any secrets we've read since the last packet |
| 2503 | * we wrote. |
| 2504 | */ |
| 2505 | wtap_dump_discard_decryption_secrets(pdh); |
| 2506 | } |
| 2507 | |
| 2508 | /* Attempt to dump out current frame to the output file */ |
| 2509 | if (!wtap_dump(pdh, &read_rec, buf, &write_err, &write_err_info)) { |
| 2510 | cfile_write_failure_message(argv[ws_optind], filename, |
| 2511 | write_err, write_err_info, |
| 2512 | read_count, |
| 2513 | out_file_type_subtype); |
| 2514 | ret = DUMP_ERROR2; |
| 2515 | |
| 2516 | /* |
| 2517 | * Close the dump file, but don't report an error |
| 2518 | * or set the exit code, as we've already reported |
| 2519 | * an error. |
| 2520 | */ |
| 2521 | wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info); |
| 2522 | goto clean_exit; |
| 2523 | } |
| 2524 | written_count++; |
| 2525 | } |
| 2526 | count++; |
| 2527 | wtap_rec_reset(&read_rec); |
| 2528 | } |
| 2529 | wtap_rec_cleanup(&read_rec); |
| 2530 | |
| 2531 | if (verbose) |
| 2532 | fprintf(stderrstderr, "Total selected: %" PRIu64"l" "u" "\n", written_count); |
| 2533 | |
| 2534 | if (read_err != 0) { |
| 2535 | /* Print a message noting that the read failed somewhere along the |
| 2536 | * line. */ |
| 2537 | cfile_read_failure_message(argv[ws_optind], read_err, read_err_info); |
| 2538 | } |
| 2539 | |
| 2540 | if (!pdh) { |
| 2541 | /* No valid packets found, open the outfile so we can write an |
| 2542 | * empty header */ |
| 2543 | g_free (filename); |
| 2544 | filename = g_strdup(argv[ws_optind+1])g_strdup_inline (argv[ws_optind+1]); |
| 2545 | |
| 2546 | pdh = editcap_dump_open(filename, ¶ms, idbs_seen, &write_err, |
| 2547 | &write_err_info, compression_type); |
| 2548 | if (pdh == NULL((void*)0)) { |
| 2549 | cfile_dump_open_failure_message(filename, |
| 2550 | write_err, write_err_info, |
| 2551 | out_file_type_subtype); |
| 2552 | ret = WS_EXIT_INVALID_FILE3; |
| 2553 | goto clean_exit; |
| 2554 | } |
| 2555 | } |
| 2556 | |
| 2557 | /* |
| 2558 | * Process whatever IDBs we haven't seen yet. |
| 2559 | */ |
| 2560 | if (!process_new_idbs(wth, pdh, idbs_seen, &write_err, &write_err_info)) { |
| 2561 | cfile_write_failure_message(argv[ws_optind], filename, |
| 2562 | write_err, write_err_info, |
| 2563 | read_count, |
| 2564 | out_file_type_subtype); |
| 2565 | ret = DUMP_ERROR2; |
| 2566 | |
| 2567 | /* |
| 2568 | * Close the dump file, but don't report an error |
| 2569 | * or set the exit code, as we've already reported |
| 2570 | * an error. |
| 2571 | */ |
| 2572 | wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info); |
| 2573 | goto clean_exit; |
| 2574 | } |
| 2575 | |
| 2576 | if (!wtap_dump_close(pdh, NULL((void*)0), &write_err, &write_err_info)) { |
| 2577 | cfile_close_failure_message(filename, write_err, write_err_info); |
| 2578 | ret = WRITE_ERROR2; |
| 2579 | goto clean_exit; |
| 2580 | } |
| 2581 | |
| 2582 | if (dup_detect) { |
| 2583 | fprintf(stderrstderr, "%" PRIu64"l" "u" " packet%s seen, %" PRIu64"l" "u" " packet%s skipped with duplicate window of %i packets.\n", |
| 2584 | count - 1, plurality(count - 1, "", "s")((count - 1) == 1 ? ("") : ("s")), duplicate_count, |
| 2585 | plurality(duplicate_count, "", "s")((duplicate_count) == 1 ? ("") : ("s")), dup_window); |
| 2586 | } else if (dup_detect_by_time) { |
| 2587 | fprintf(stderrstderr, "%" PRIu64"l" "u" " packet%s seen, %" PRIu64"l" "u" " packet%s skipped with duplicate time window equal to or less than %ld.%09ld seconds.\n", |
| 2588 | count - 1, plurality(count - 1, "", "s")((count - 1) == 1 ? ("") : ("s")), duplicate_count, |
| 2589 | plurality(duplicate_count, "", "s")((duplicate_count) == 1 ? ("") : ("s")), |
| 2590 | (long)relative_time_window.secs, |
| 2591 | (long int)relative_time_window.nsecs); |
| 2592 | } |
| 2593 | |
| 2594 | clean_exit: |
| 2595 | g_free(fprefix); |
| 2596 | g_free(fsuffix); |
| 2597 | |
| 2598 | if (filename) { |
| 2599 | g_free(filename); |
| 2600 | } |
| 2601 | if (frames_user_comments) { |
| 2602 | g_tree_destroy(frames_user_comments); |
| 2603 | } |
| 2604 | if (dsb_filenames) { |
| 2605 | g_array_free(dsb_types, TRUE(!(0))); |
| 2606 | g_ptr_array_free(dsb_filenames, TRUE(!(0))); |
| 2607 | } |
| 2608 | if (idbs_seen != NULL((void*)0)) { |
| 2609 | for (unsigned b = 0; b < idbs_seen->len; b++) { |
| 2610 | wtap_block_t if_data = g_array_index(idbs_seen, wtap_block_t, b)(((wtap_block_t*) (void *) (idbs_seen)->data) [(b)]); |
| 2611 | wtap_block_unref(if_data); |
| 2612 | } |
| 2613 | g_array_free(idbs_seen, TRUE(!(0))); |
| 2614 | } |
| 2615 | g_free(params.idb_inf); |
| 2616 | wtap_dump_params_cleanup(¶ms); |
| 2617 | if (wth != NULL((void*)0)) |
| 2618 | wtap_close(wth); |
| 2619 | wtap_rec_reset(&read_rec); |
| 2620 | wtap_cleanup(); |
| 2621 | free_progdirs(); |
| 2622 | if (capture_comments != NULL((void*)0)) { |
| 2623 | g_ptr_array_free(capture_comments, TRUE(!(0))); |
| 2624 | capture_comments = NULL((void*)0); |
| 2625 | } |
| 2626 | return ret; |
| 2627 | } |
| 2628 | |
| 2629 | /* Skip meta-information read from file to return offset of real |
| 2630 | * protocol data */ |
| 2631 | static unsigned |
| 2632 | find_dct2000_real_data(const uint8_t *buf) |
| 2633 | { |
| 2634 | unsigned n = 0; |
| 2635 | |
| 2636 | for (n = 0; buf[n] != '\0'; n++); /* Context name */ |
| 2637 | n++; |
| 2638 | n++; /* Context port number */ |
| 2639 | for (; buf[n] != '\0'; n++); /* Timestamp */ |
| 2640 | n++; |
| 2641 | for (; buf[n] != '\0'; n++); /* Protocol name */ |
| 2642 | n++; |
| 2643 | for (; buf[n] != '\0'; n++); /* Variant number (as string) */ |
| 2644 | n++; |
| 2645 | for (; buf[n] != '\0'; n++); /* Outhdr (as string) */ |
| 2646 | n++; |
| 2647 | n += 2; /* Direction & encap */ |
| 2648 | |
| 2649 | return n; |
| 2650 | } |
| 2651 | |
| 2652 | /* |
| 2653 | * We support up to 2 chopping regions in a single pass: one specified by the |
| 2654 | * positive chop length, and one by the negative chop length. |
| 2655 | */ |
| 2656 | static void |
| 2657 | handle_chopping(chop_t chop, wtap_packet_header *phdr, uint8_t **buf, |
| 2658 | bool_Bool adjlen) |
| 2659 | { |
| 2660 | /* If we're not chopping anything from one side, then the offset for that |
| 2661 | * side is meaningless. */ |
| 2662 | if (chop.len_begin == 0) |
| 2663 | chop.off_begin_pos = chop.off_begin_neg = 0; |
| 2664 | if (chop.len_end == 0) |
| 2665 | chop.off_end_pos = chop.off_end_neg = 0; |
| 2666 | |
| 2667 | if (chop.off_begin_neg < 0) { |
| 2668 | chop.off_begin_pos += phdr->caplen + chop.off_begin_neg; |
| 2669 | chop.off_begin_neg = 0; |
| 2670 | } |
| 2671 | if (chop.off_end_pos > 0) { |
| 2672 | chop.off_end_neg += chop.off_end_pos - phdr->caplen; |
| 2673 | chop.off_end_pos = 0; |
| 2674 | } |
| 2675 | |
| 2676 | /* If we've crossed chopping regions, swap them */ |
| 2677 | if (chop.len_begin && chop.len_end) { |
| 2678 | if (chop.off_begin_pos > ((int)phdr->caplen + chop.off_end_neg)) { |
| 2679 | int tmp_len, tmp_off; |
| 2680 | |
| 2681 | tmp_off = phdr->caplen + chop.off_end_neg + chop.len_end; |
| 2682 | tmp_len = -chop.len_end; |
| 2683 | |
| 2684 | chop.off_end_neg = chop.len_begin + chop.off_begin_pos - phdr->caplen; |
| 2685 | chop.len_end = -chop.len_begin; |
| 2686 | |
| 2687 | chop.len_begin = tmp_len; |
| 2688 | chop.off_begin_pos = tmp_off; |
| 2689 | } |
| 2690 | } |
| 2691 | |
| 2692 | /* Make sure we don't chop off more than we have available */ |
| 2693 | if (phdr->caplen < (uint32_t)(chop.off_begin_pos - chop.off_end_neg)) { |
| 2694 | chop.len_begin = 0; |
| 2695 | chop.len_end = 0; |
| 2696 | } |
| 2697 | if ((uint32_t)(chop.len_begin - chop.len_end) > |
| 2698 | (phdr->caplen - (uint32_t)(chop.off_begin_pos - chop.off_end_neg))) { |
| 2699 | chop.len_begin = phdr->caplen - (chop.off_begin_pos - chop.off_end_neg); |
| 2700 | chop.len_end = 0; |
| 2701 | } |
| 2702 | |
| 2703 | /* Handle chopping from the beginning. Note that if a beginning offset |
| 2704 | * was specified, we need to keep that piece */ |
| 2705 | if (chop.len_begin > 0) { |
| 2706 | if (chop.off_begin_pos > 0) { |
| 2707 | memmove(*buf + chop.off_begin_pos, |
| 2708 | *buf + chop.off_begin_pos + chop.len_begin, |
| 2709 | phdr->caplen - (chop.off_begin_pos + chop.len_begin)); |
| 2710 | } else { |
| 2711 | *buf += chop.len_begin; |
| 2712 | } |
| 2713 | phdr->caplen -= chop.len_begin; |
| 2714 | |
| 2715 | if (adjlen) { |
| 2716 | if (phdr->len > (uint32_t)chop.len_begin) |
| 2717 | phdr->len -= chop.len_begin; |
| 2718 | else |
| 2719 | phdr->len = 0; |
| 2720 | } |
| 2721 | } |
| 2722 | |
| 2723 | /* Handle chopping from the end. Note that if an ending offset was |
| 2724 | * specified, we need to keep that piece */ |
| 2725 | if (chop.len_end < 0) { |
| 2726 | if (chop.off_end_neg < 0) { |
| 2727 | memmove(*buf + (int)phdr->caplen + (chop.len_end + chop.off_end_neg), |
| 2728 | *buf + (int)phdr->caplen + chop.off_end_neg, |
| 2729 | -chop.off_end_neg); |
| 2730 | } |
| 2731 | phdr->caplen += chop.len_end; |
| 2732 | |
| 2733 | if (adjlen) { |
| 2734 | if (((signed int) phdr->len + chop.len_end) > 0) |
| 2735 | phdr->len += chop.len_end; |
| 2736 | else |
| 2737 | phdr->len = 0; |
| 2738 | } |
| 2739 | } |
| 2740 | } |
| 2741 | |
| 2742 | /* |
| 2743 | * Editor modelines - https://www.wireshark.org/tools/modelines.html |
| 2744 | * |
| 2745 | * Local variables: |
| 2746 | * c-basic-offset: 4 |
| 2747 | * tab-width: 8 |
| 2748 | * indent-tabs-mode: nil |
| 2749 | * End: |
| 2750 | * |
| 2751 | * vi: set shiftwidth=4 tabstop=8 expandtab: |
| 2752 | * :indentSize=4:tabSize=8:noTabs=true: |
| 2753 | */ |