The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1993, 1994, 1995, 1996, 1997 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | * |
| 21 | * savefile.c - supports offline use of tcpdump |
| 22 | * Extraction/creation by Jeffrey Mogul, DECWRL |
| 23 | * Modified by Steve McCanne, LBL. |
| 24 | * |
| 25 | * Used to save the received packet headers, after filtering, to |
| 26 | * a file, and then read them later. |
| 27 | * The first record in the file contains saved values for the machine |
| 28 | * dependent values so we can print the dump file on any architecture. |
| 29 | */ |
| 30 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 31 | #ifdef HAVE_CONFIG_H |
| 32 | #include "config.h" |
| 33 | #endif |
| 34 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 35 | #ifdef WIN32 |
| 36 | #include <pcap-stdinc.h> |
| 37 | #else /* WIN32 */ |
| 38 | #if HAVE_INTTYPES_H |
| 39 | #include <inttypes.h> |
| 40 | #elif HAVE_STDINT_H |
| 41 | #include <stdint.h> |
| 42 | #endif |
| 43 | #ifdef HAVE_SYS_BITYPES_H |
| 44 | #include <sys/bitypes.h> |
| 45 | #endif |
| 46 | #include <sys/types.h> |
| 47 | #endif /* WIN32 */ |
| 48 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 49 | #include <errno.h> |
| 50 | #include <memory.h> |
| 51 | #include <stdio.h> |
| 52 | #include <stdlib.h> |
| 53 | #include <string.h> |
| 54 | |
| 55 | #include "pcap-int.h" |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 56 | #include "pcap/usb.h" |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 57 | |
| 58 | #ifdef HAVE_OS_PROTO_H |
| 59 | #include "os-proto.h" |
| 60 | #endif |
| 61 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 62 | #include "sf-pcap.h" |
| 63 | #include "sf-pcap-ng.h" |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 64 | |
| 65 | /* |
| 66 | * Setting O_BINARY on DOS/Windows is a bit tricky |
| 67 | */ |
| 68 | #if defined(WIN32) |
| 69 | #define SET_BINMODE(f) _setmode(_fileno(f), _O_BINARY) |
| 70 | #elif defined(MSDOS) |
| 71 | #if defined(__HIGHC__) |
| 72 | #define SET_BINMODE(f) setmode(f, O_BINARY) |
| 73 | #else |
| 74 | #define SET_BINMODE(f) setmode(fileno(f), O_BINARY) |
| 75 | #endif |
| 76 | #endif |
| 77 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 78 | static int |
| 79 | sf_getnonblock(pcap_t *p, char *errbuf) |
| 80 | { |
| 81 | /* |
| 82 | * This is a savefile, not a live capture file, so never say |
| 83 | * it's in non-blocking mode. |
| 84 | */ |
| 85 | return (0); |
| 86 | } |
| 87 | |
| 88 | static int |
| 89 | sf_setnonblock(pcap_t *p, int nonblock, char *errbuf) |
| 90 | { |
| 91 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 92 | * This is a savefile, not a live capture file, so reject |
| 93 | * requests to put it in non-blocking mode. (If it's a |
| 94 | * pipe, it could be put in non-blocking mode, but that |
| 95 | * would significantly complicate the code to read packets, |
| 96 | * as it would have to handle reading partial packets and |
| 97 | * keeping the state of the read.) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 98 | */ |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 99 | snprintf(p->errbuf, PCAP_ERRBUF_SIZE, |
| 100 | "Savefiles cannot be put into non-blocking mode"); |
| 101 | return (-1); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | static int |
| 105 | sf_stats(pcap_t *p, struct pcap_stat *ps) |
| 106 | { |
| 107 | snprintf(p->errbuf, PCAP_ERRBUF_SIZE, |
| 108 | "Statistics aren't available from savefiles"); |
| 109 | return (-1); |
| 110 | } |
| 111 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 112 | #ifdef WIN32 |
| 113 | static int |
| 114 | sf_setbuff(pcap_t *p, int dim) |
| 115 | { |
| 116 | snprintf(p->errbuf, PCAP_ERRBUF_SIZE, |
| 117 | "The kernel buffer size cannot be set while reading from a file"); |
| 118 | return (-1); |
| 119 | } |
| 120 | |
| 121 | static int |
| 122 | sf_setmode(pcap_t *p, int mode) |
| 123 | { |
| 124 | snprintf(p->errbuf, PCAP_ERRBUF_SIZE, |
| 125 | "impossible to set mode while reading from a file"); |
| 126 | return (-1); |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | sf_setmintocopy(pcap_t *p, int size) |
| 131 | { |
| 132 | snprintf(p->errbuf, PCAP_ERRBUF_SIZE, |
| 133 | "The mintocopy parameter cannot be set while reading from a file"); |
| 134 | return (-1); |
| 135 | } |
| 136 | #endif |
| 137 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 138 | static int |
| 139 | sf_inject(pcap_t *p, const void *buf _U_, size_t size _U_) |
| 140 | { |
| 141 | strlcpy(p->errbuf, "Sending packets isn't supported on savefiles", |
| 142 | PCAP_ERRBUF_SIZE); |
| 143 | return (-1); |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * Set direction flag: Which packets do we accept on a forwarding |
| 148 | * single device? IN, OUT or both? |
| 149 | */ |
| 150 | static int |
| 151 | sf_setdirection(pcap_t *p, pcap_direction_t d) |
| 152 | { |
| 153 | snprintf(p->errbuf, sizeof(p->errbuf), |
| 154 | "Setting direction is not supported on savefiles"); |
| 155 | return (-1); |
| 156 | } |
| 157 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 158 | void |
| 159 | sf_cleanup(pcap_t *p) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 160 | { |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 161 | if (p->rfile != stdin) |
| 162 | (void)fclose(p->rfile); |
| 163 | if (p->buffer != NULL) |
| 164 | free(p->buffer); |
| 165 | pcap_freecode(&p->fcode); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | pcap_t * |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 169 | pcap_open_offline_with_tstamp_precision(const char *fname, u_int precision, |
| 170 | char *errbuf) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 171 | { |
| 172 | FILE *fp; |
| 173 | pcap_t *p; |
| 174 | |
| 175 | if (fname[0] == '-' && fname[1] == '\0') |
| 176 | { |
| 177 | fp = stdin; |
| 178 | #if defined(WIN32) || defined(MSDOS) |
| 179 | /* |
| 180 | * We're reading from the standard input, so put it in binary |
| 181 | * mode, as savefiles are binary files. |
| 182 | */ |
| 183 | SET_BINMODE(fp); |
| 184 | #endif |
| 185 | } |
| 186 | else { |
| 187 | #if !defined(WIN32) && !defined(MSDOS) |
| 188 | fp = fopen(fname, "r"); |
| 189 | #else |
| 190 | fp = fopen(fname, "rb"); |
| 191 | #endif |
| 192 | if (fp == NULL) { |
| 193 | snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", fname, |
| 194 | pcap_strerror(errno)); |
| 195 | return (NULL); |
| 196 | } |
| 197 | } |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 198 | p = pcap_fopen_offline_with_tstamp_precision(fp, precision, errbuf); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 199 | if (p == NULL) { |
| 200 | if (fp != stdin) |
| 201 | fclose(fp); |
| 202 | } |
| 203 | return (p); |
| 204 | } |
| 205 | |
| 206 | pcap_t * |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 207 | pcap_open_offline(const char *fname, char *errbuf) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 208 | { |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 209 | return (pcap_open_offline_with_tstamp_precision(fname, |
| 210 | PCAP_TSTAMP_PRECISION_MICRO, errbuf)); |
| 211 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 212 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 213 | #ifdef WIN32 |
| 214 | pcap_t* pcap_hopen_offline_with_tstamp_precision(intptr_t osfd, u_int precision, |
| 215 | char *errbuf) |
| 216 | { |
| 217 | int fd; |
| 218 | FILE *file; |
| 219 | |
| 220 | fd = _open_osfhandle(osfd, _O_RDONLY); |
Elliott Hughes | d8845d7 | 2015-10-19 18:07:04 -0700 | [diff] [blame] | 221 | if ( fd < 0 ) |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 222 | { |
| 223 | snprintf(errbuf, PCAP_ERRBUF_SIZE, pcap_strerror(errno)); |
| 224 | return NULL; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 225 | } |
| 226 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 227 | file = _fdopen(fd, "rb"); |
Elliott Hughes | d8845d7 | 2015-10-19 18:07:04 -0700 | [diff] [blame] | 228 | if ( file == NULL ) |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 229 | { |
| 230 | snprintf(errbuf, PCAP_ERRBUF_SIZE, pcap_strerror(errno)); |
| 231 | return NULL; |
| 232 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 233 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 234 | return pcap_fopen_offline_with_tstamp_precision(file, precision, |
| 235 | errbuf); |
| 236 | } |
| 237 | |
| 238 | pcap_t* pcap_hopen_offline(intptr_t osfd, char *errbuf) |
| 239 | { |
| 240 | return pcap_hopen_offline_with_tstamp_precision(osfd, |
| 241 | PCAP_TSTAMP_PRECISION_MICRO, errbuf); |
| 242 | } |
| 243 | #endif |
| 244 | |
| 245 | static pcap_t *(*check_headers[])(bpf_u_int32, FILE *, u_int, char *, int *) = { |
| 246 | pcap_check_header, |
| 247 | pcap_ng_check_header |
| 248 | }; |
| 249 | |
| 250 | #define N_FILE_TYPES (sizeof check_headers / sizeof check_headers[0]) |
| 251 | |
| 252 | #ifdef WIN32 |
| 253 | static |
| 254 | #endif |
| 255 | pcap_t * |
| 256 | pcap_fopen_offline_with_tstamp_precision(FILE *fp, u_int precision, |
| 257 | char *errbuf) |
| 258 | { |
| 259 | register pcap_t *p; |
| 260 | bpf_u_int32 magic; |
| 261 | size_t amt_read; |
| 262 | u_int i; |
| 263 | int err; |
| 264 | |
| 265 | /* |
| 266 | * Read the first 4 bytes of the file; the network analyzer dump |
| 267 | * file formats we support (pcap and pcap-ng), and several other |
| 268 | * formats we might support in the future (such as snoop, DOS and |
| 269 | * Windows Sniffer, and Microsoft Network Monitor) all have magic |
| 270 | * numbers that are unique in their first 4 bytes. |
| 271 | */ |
| 272 | amt_read = fread((char *)&magic, 1, sizeof(magic), fp); |
| 273 | if (amt_read != sizeof(magic)) { |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 274 | if (ferror(fp)) { |
| 275 | snprintf(errbuf, PCAP_ERRBUF_SIZE, |
| 276 | "error reading dump file: %s", |
| 277 | pcap_strerror(errno)); |
| 278 | } else { |
| 279 | snprintf(errbuf, PCAP_ERRBUF_SIZE, |
| 280 | "truncated dump file; tried to read %lu file header bytes, only got %lu", |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 281 | (unsigned long)sizeof(magic), |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 282 | (unsigned long)amt_read); |
| 283 | } |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 284 | return (NULL); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 285 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 286 | |
| 287 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 288 | * Try all file types. |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 289 | */ |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 290 | for (i = 0; i < N_FILE_TYPES; i++) { |
| 291 | p = (*check_headers[i])(magic, fp, precision, errbuf, &err); |
| 292 | if (p != NULL) { |
| 293 | /* Yup, that's it. */ |
| 294 | goto found; |
| 295 | } |
| 296 | if (err) { |
| 297 | /* |
| 298 | * Error trying to read the header. |
| 299 | */ |
| 300 | return (NULL); |
| 301 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 302 | } |
| 303 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 304 | /* |
| 305 | * Well, who knows what this mess is.... |
| 306 | */ |
| 307 | snprintf(errbuf, PCAP_ERRBUF_SIZE, "unknown file format"); |
| 308 | return (NULL); |
| 309 | |
| 310 | found: |
| 311 | p->rfile = fp; |
| 312 | |
| 313 | /* Padding only needed for live capture fcode */ |
| 314 | p->fddipad = 0; |
| 315 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 316 | #if !defined(WIN32) && !defined(MSDOS) |
| 317 | /* |
| 318 | * You can do "select()" and "poll()" on plain files on most |
| 319 | * platforms, and should be able to do so on pipes. |
| 320 | * |
| 321 | * You can't do "select()" on anything other than sockets in |
| 322 | * Windows, so, on Win32 systems, we don't have "selectable_fd". |
| 323 | */ |
| 324 | p->selectable_fd = fileno(fp); |
| 325 | #endif |
| 326 | |
| 327 | p->read_op = pcap_offline_read; |
| 328 | p->inject_op = sf_inject; |
| 329 | p->setfilter_op = install_bpf_program; |
| 330 | p->setdirection_op = sf_setdirection; |
| 331 | p->set_datalink_op = NULL; /* we don't support munging link-layer headers */ |
| 332 | p->getnonblock_op = sf_getnonblock; |
| 333 | p->setnonblock_op = sf_setnonblock; |
| 334 | p->stats_op = sf_stats; |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 335 | #ifdef WIN32 |
| 336 | p->setbuff_op = sf_setbuff; |
| 337 | p->setmode_op = sf_setmode; |
| 338 | p->setmintocopy_op = sf_setmintocopy; |
| 339 | #endif |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 340 | |
| 341 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 342 | * For offline captures, the standard one-shot callback can |
| 343 | * be used for pcap_next()/pcap_next_ex(). |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 344 | */ |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 345 | p->oneshot_callback = pcap_oneshot; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 346 | |
Elliott Hughes | d8845d7 | 2015-10-19 18:07:04 -0700 | [diff] [blame] | 347 | /* |
| 348 | * Savefiles never require special BPF code generation. |
| 349 | */ |
| 350 | p->bpf_codegen_flags = 0; |
| 351 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 352 | p->activated = 1; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 353 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 354 | return (p); |
| 355 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 356 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 357 | #ifdef WIN32 |
| 358 | static |
| 359 | #endif |
| 360 | pcap_t * |
| 361 | pcap_fopen_offline(FILE *fp, char *errbuf) |
| 362 | { |
| 363 | return (pcap_fopen_offline_with_tstamp_precision(fp, |
| 364 | PCAP_TSTAMP_PRECISION_MICRO, errbuf)); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 368 | * Read packets from a capture file, and call the callback for each |
| 369 | * packet. |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 370 | * If cnt > 0, return after 'cnt' packets, otherwise continue until eof. |
| 371 | */ |
| 372 | int |
| 373 | pcap_offline_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) |
| 374 | { |
| 375 | struct bpf_insn *fcode; |
| 376 | int status = 0; |
| 377 | int n = 0; |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 378 | u_char *data; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 379 | |
| 380 | while (status == 0) { |
| 381 | struct pcap_pkthdr h; |
| 382 | |
| 383 | /* |
| 384 | * Has "pcap_breakloop()" been called? |
| 385 | * If so, return immediately - if we haven't read any |
| 386 | * packets, clear the flag and return -2 to indicate |
| 387 | * that we were told to break out of the loop, otherwise |
| 388 | * leave the flag set, so that the *next* call will break |
| 389 | * out of the loop without having read any packets, and |
| 390 | * return the number of packets we've processed so far. |
| 391 | */ |
| 392 | if (p->break_loop) { |
| 393 | if (n == 0) { |
| 394 | p->break_loop = 0; |
| 395 | return (-2); |
| 396 | } else |
| 397 | return (n); |
| 398 | } |
| 399 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 400 | status = p->next_packet_op(p, &h, &data); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 401 | if (status) { |
| 402 | if (status == 1) |
| 403 | return (0); |
| 404 | return (status); |
| 405 | } |
| 406 | |
| 407 | if ((fcode = p->fcode.bf_insns) == NULL || |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 408 | bpf_filter(fcode, data, h.len, h.caplen)) { |
| 409 | (*callback)(user, &h, data); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 410 | if (++n >= cnt && cnt > 0) |
| 411 | break; |
| 412 | } |
| 413 | } |
| 414 | /*XXX this breaks semantics tcpslice expects */ |
| 415 | return (n); |
| 416 | } |