| 1 | /* |
| 2 | Copyright (C) by Andrew Tridgell 1996, 2000 |
| 3 | Copyright (C) Paul Mackerras 1996 |
| 4 | Copyright (C) 2001 by Martin Pool <mbp@samba.org> |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | |
| 22 | #define False 0 |
| 23 | #define True 1 |
| 24 | |
| 25 | #define BLOCK_SIZE 700 |
| 26 | #define RSYNC_RSH_ENV "RSYNC_RSH" |
| 27 | |
| 28 | #define RSYNC_NAME "rsync" |
| 29 | #define RSYNCD_CONF "/etc/rsyncd.conf" |
| 30 | |
| 31 | #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock" |
| 32 | #define URL_PREFIX "rsync://" |
| 33 | |
| 34 | #define BACKUP_SUFFIX "~" |
| 35 | |
| 36 | /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is |
| 37 | incompatible with older versions :-( */ |
| 38 | #define CHAR_OFFSET 0 |
| 39 | |
| 40 | |
| 41 | #define FLAG_DELETE (1<<0) |
| 42 | #define SAME_MODE (1<<1) |
| 43 | #define SAME_RDEV (1<<2) |
| 44 | #define SAME_UID (1<<3) |
| 45 | #define SAME_GID (1<<4) |
| 46 | #define SAME_DIR (1<<5) |
| 47 | #define SAME_NAME SAME_DIR |
| 48 | #define LONG_NAME (1<<6) |
| 49 | #define SAME_TIME (1<<7) |
| 50 | |
| 51 | /* update this if you make incompatible changes */ |
| 52 | #define PROTOCOL_VERSION 25 |
| 53 | |
| 54 | /* We refuse to interoperate with versions that are not in this range. |
| 55 | * Note that we assume we'll work with later versions: the onus is on |
| 56 | * people writing them to make sure that they don't send us anything |
| 57 | * we won't understand. |
| 58 | * |
| 59 | * There are two possible explanations for the limit at thirty: either |
| 60 | * to allow new major-rev versions that do not interoperate with us, |
| 61 | * and (more likely) so that we can detect an attempt to connect rsync |
| 62 | * to a non-rsync server, which is unlikely to begin by sending a byte |
| 63 | * between 15 and 30. */ |
| 64 | #define MIN_PROTOCOL_VERSION 15 |
| 65 | #define MAX_PROTOCOL_VERSION 30 |
| 66 | |
| 67 | #define RSYNC_PORT 873 |
| 68 | |
| 69 | #define SPARSE_WRITE_SIZE (1024) |
| 70 | #define WRITE_SIZE (32*1024) |
| 71 | #define CHUNK_SIZE (32*1024) |
| 72 | #define MAX_MAP_SIZE (256*1024) |
| 73 | #define IO_BUFFER_SIZE (4092) |
| 74 | |
| 75 | #define MAX_ARGS 1000 |
| 76 | |
| 77 | #define MPLEX_BASE 7 |
| 78 | |
| 79 | /* Log values. I *think* what these mean is: FLOG goes to the server |
| 80 | * logfile; FERROR and FINFO try to end up on the client, with |
| 81 | * different levels of filtering. */ |
| 82 | enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 }; |
| 83 | |
| 84 | #include "errcode.h" |
| 85 | |
| 86 | #include "config.h" |
| 87 | |
| 88 | #if HAVE_REMSH |
| 89 | #define RSYNC_RSH "remsh" |
| 90 | #else |
| 91 | #define RSYNC_RSH "rsh" |
| 92 | #endif |
| 93 | |
| 94 | #include <sys/types.h> |
| 95 | |
| 96 | #ifdef HAVE_UNISTD_H |
| 97 | #include <unistd.h> |
| 98 | #endif |
| 99 | #include <stdio.h> |
| 100 | #include <stddef.h> |
| 101 | |
| 102 | #ifdef HAVE_SYS_PARAM_H |
| 103 | #include <sys/param.h> |
| 104 | #endif |
| 105 | |
| 106 | #ifdef HAVE_STDLIB_H |
| 107 | #include <stdlib.h> |
| 108 | #endif |
| 109 | |
| 110 | #ifdef HAVE_SYS_SOCKET_H |
| 111 | #include <sys/socket.h> |
| 112 | #endif |
| 113 | |
| 114 | #ifdef HAVE_STRING_H |
| 115 | #include <string.h> |
| 116 | #endif |
| 117 | |
| 118 | #ifdef HAVE_MALLOC_H |
| 119 | #include <malloc.h> |
| 120 | #endif |
| 121 | |
| 122 | #ifdef TIME_WITH_SYS_TIME |
| 123 | #include <sys/time.h> |
| 124 | #include <time.h> |
| 125 | #else |
| 126 | #ifdef HAVE_SYS_TIME_H |
| 127 | #include <sys/time.h> |
| 128 | #else |
| 129 | #include <time.h> |
| 130 | #endif |
| 131 | #endif |
| 132 | |
| 133 | #ifdef HAVE_FCNTL_H |
| 134 | #include <fcntl.h> |
| 135 | #else |
| 136 | #ifdef HAVE_SYS_FCNTL_H |
| 137 | #include <sys/fcntl.h> |
| 138 | #endif |
| 139 | #endif |
| 140 | |
| 141 | #include <sys/stat.h> |
| 142 | |
| 143 | #ifdef HAVE_SYS_IOCTL_H |
| 144 | #include <sys/ioctl.h> |
| 145 | #endif |
| 146 | |
| 147 | #ifdef HAVE_SYS_FILIO_H |
| 148 | #include <sys/filio.h> |
| 149 | #endif |
| 150 | |
| 151 | #include <signal.h> |
| 152 | #ifdef HAVE_SYS_WAIT_H |
| 153 | #include <sys/wait.h> |
| 154 | #endif |
| 155 | #ifdef HAVE_CTYPE_H |
| 156 | #include <ctype.h> |
| 157 | #endif |
| 158 | #ifdef HAVE_GRP_H |
| 159 | #include <grp.h> |
| 160 | #endif |
| 161 | #include <errno.h> |
| 162 | |
| 163 | #ifdef HAVE_UTIME_H |
| 164 | #include <utime.h> |
| 165 | #endif |
| 166 | |
| 167 | #ifdef HAVE_SYS_SELECT_H |
| 168 | #include <sys/select.h> |
| 169 | #endif |
| 170 | |
| 171 | #ifdef HAVE_SYS_MODE_H |
| 172 | /* apparently AIX needs this for S_ISLNK */ |
| 173 | #ifndef S_ISLNK |
| 174 | #include <sys/mode.h> |
| 175 | #endif |
| 176 | #endif |
| 177 | |
| 178 | #ifdef HAVE_FNMATCH |
| 179 | #include <fnmatch.h> |
| 180 | #else |
| 181 | #include "lib/fnmatch.h" |
| 182 | #endif |
| 183 | |
| 184 | #ifdef HAVE_GLOB_H |
| 185 | #include <glob.h> |
| 186 | #endif |
| 187 | |
| 188 | /* these are needed for the uid/gid mapping code */ |
| 189 | #include <pwd.h> |
| 190 | #include <grp.h> |
| 191 | |
| 192 | #include <stdarg.h> |
| 193 | #include <netinet/in.h> |
| 194 | #include <arpa/inet.h> |
| 195 | #include <netdb.h> |
| 196 | #include <syslog.h> |
| 197 | #include <sys/file.h> |
| 198 | |
| 199 | #if HAVE_DIRENT_H |
| 200 | # include <dirent.h> |
| 201 | #else |
| 202 | # define dirent direct |
| 203 | # if HAVE_SYS_NDIR_H |
| 204 | # include <sys/ndir.h> |
| 205 | # endif |
| 206 | # if HAVE_SYS_DIR_H |
| 207 | # include <sys/dir.h> |
| 208 | # endif |
| 209 | # if HAVE_NDIR_H |
| 210 | # include <ndir.h> |
| 211 | # endif |
| 212 | #endif |
| 213 | |
| 214 | #ifdef HAVE_COMPAT_H |
| 215 | #include <compat.h> |
| 216 | #endif |
| 217 | |
| 218 | |
| 219 | #define BOOL int |
| 220 | |
| 221 | #ifndef uchar |
| 222 | #define uchar unsigned char |
| 223 | #endif |
| 224 | |
| 225 | #if HAVE_UNSIGNED_CHAR |
| 226 | #define schar signed char |
| 227 | #else |
| 228 | #define schar char |
| 229 | #endif |
| 230 | |
| 231 | #ifndef int32 |
| 232 | #if (SIZEOF_INT == 4) |
| 233 | #define int32 int |
| 234 | #elif (SIZEOF_LONG == 4) |
| 235 | #define int32 long |
| 236 | #elif (SIZEOF_SHORT == 4) |
| 237 | #define int32 short |
| 238 | #else |
| 239 | /* I hope this works */ |
| 240 | #define int32 int |
| 241 | #define LARGE_INT32 |
| 242 | #endif |
| 243 | #endif |
| 244 | |
| 245 | #ifndef uint32 |
| 246 | #define uint32 unsigned int32 |
| 247 | #endif |
| 248 | |
| 249 | #if HAVE_OFF64_T |
| 250 | #define OFF_T off64_t |
| 251 | #define STRUCT_STAT struct stat64 |
| 252 | #else |
| 253 | #define OFF_T off_t |
| 254 | #define STRUCT_STAT struct stat |
| 255 | #endif |
| 256 | |
| 257 | #if HAVE_OFF64_T |
| 258 | #define int64 off64_t |
| 259 | #elif (SIZEOF_LONG == 8) |
| 260 | #define int64 long |
| 261 | #elif (SIZEOF_INT == 8) |
| 262 | #define int64 int |
| 263 | #elif HAVE_LONGLONG |
| 264 | #define int64 long long |
| 265 | #else |
| 266 | #define int64 off_t |
| 267 | #define NO_INT64 |
| 268 | #endif |
| 269 | |
| 270 | #if HAVE_SHORT_INO_T |
| 271 | # define INO_T uint32 |
| 272 | #elif HAVE_INO_T |
| 273 | # define INO_T ino_t |
| 274 | #else |
| 275 | # define INO_T unsigned |
| 276 | #endif |
| 277 | |
| 278 | #ifndef MIN |
| 279 | #define MIN(a,b) ((a)<(b)?(a):(b)) |
| 280 | #endif |
| 281 | |
| 282 | #ifndef MAX |
| 283 | #define MAX(a,b) ((a)>(b)?(a):(b)) |
| 284 | #endif |
| 285 | |
| 286 | #ifndef MAXHOSTNAMELEN |
| 287 | #define MAXHOSTNAMELEN 256 |
| 288 | #endif |
| 289 | |
| 290 | /* the length of the md4 checksum */ |
| 291 | #define MD4_SUM_LENGTH 16 |
| 292 | #define SUM_LENGTH 16 |
| 293 | |
| 294 | #ifndef MAXPATHLEN |
| 295 | #define MAXPATHLEN 1024 |
| 296 | #endif |
| 297 | |
| 298 | #ifndef INADDR_NONE |
| 299 | #define INADDR_NONE 0xffffffff |
| 300 | #endif |
| 301 | |
| 302 | struct file_struct { |
| 303 | unsigned flags; |
| 304 | time_t modtime; |
| 305 | OFF_T length; |
| 306 | mode_t mode; |
| 307 | INO_T inode; |
| 308 | dev_t dev; |
| 309 | dev_t rdev; |
| 310 | uid_t uid; |
| 311 | gid_t gid; |
| 312 | char *basename; |
| 313 | char *dirname; |
| 314 | char *basedir; |
| 315 | char *link; |
| 316 | char *sum; |
| 317 | }; |
| 318 | |
| 319 | |
| 320 | #define ARENA_SIZE (32 * 1024) |
| 321 | |
| 322 | struct string_area { |
| 323 | char *base; |
| 324 | char *end; |
| 325 | char *current; |
| 326 | struct string_area *next; |
| 327 | }; |
| 328 | |
| 329 | struct file_list { |
| 330 | int count; |
| 331 | int malloced; |
| 332 | struct file_struct **files; |
| 333 | struct string_area *string_area; |
| 334 | }; |
| 335 | |
| 336 | struct sum_buf { |
| 337 | OFF_T offset; /* offset in file of this chunk */ |
| 338 | int len; /* length of chunk of file */ |
| 339 | int i; /* index of this chunk */ |
| 340 | uint32 sum1; /* simple checksum */ |
| 341 | char sum2[SUM_LENGTH]; /* checksum */ |
| 342 | }; |
| 343 | |
| 344 | struct sum_struct { |
| 345 | OFF_T flength; /* total file length */ |
| 346 | int count; /* how many chunks */ |
| 347 | int remainder; /* flength % block_length */ |
| 348 | int n; /* block_length */ |
| 349 | struct sum_buf *sums; /* points to info for each chunk */ |
| 350 | }; |
| 351 | |
| 352 | struct map_struct { |
| 353 | char *p; |
| 354 | int fd,p_size,p_len; |
| 355 | OFF_T file_size, p_offset, p_fd_offset; |
| 356 | }; |
| 357 | |
| 358 | struct exclude_struct { |
| 359 | char *pattern; |
| 360 | int regular_exp; |
| 361 | int fnmatch_flags; |
| 362 | int include; |
| 363 | int directory; |
| 364 | int local; |
| 365 | }; |
| 366 | |
| 367 | struct stats { |
| 368 | int64 total_size; |
| 369 | int64 total_transferred_size; |
| 370 | int64 total_written; |
| 371 | int64 total_read; |
| 372 | int64 literal_data; |
| 373 | int64 matched_data; |
| 374 | int flist_size; |
| 375 | int num_files; |
| 376 | int num_transferred_files; |
| 377 | }; |
| 378 | |
| 379 | |
| 380 | /* we need this function because of the silly way in which duplicate |
| 381 | entries are handled in the file lists - we can't change this |
| 382 | without breaking existing versions */ |
| 383 | static inline int flist_up(struct file_list *flist, int i) |
| 384 | { |
| 385 | while (!flist->files[i]->basename) i++; |
| 386 | return i; |
| 387 | } |
| 388 | |
| 389 | #include "byteorder.h" |
| 390 | #include "proto.h" |
| 391 | #include "lib/mdfour.h" |
| 392 | #include "lib/permstring.h" |
| 393 | |
| 394 | /* We have replacement versions of these if they're missing. */ |
| 395 | #ifndef HAVE_ASPRINTF |
| 396 | int asprintf(char **ptr, const char *format, ...); |
| 397 | #endif |
| 398 | |
| 399 | #ifndef HAVE_VASPRINTF |
| 400 | int vasprintf(char **ptr, const char *format, va_list ap); |
| 401 | #endif |
| 402 | |
| 403 | #if !defined(HAVE_VSNPRINTF) && !defined(HAVE_C99_VSNPRINTF) |
| 404 | int vsnprintf (char *str, size_t count, const char *fmt, va_list args); |
| 405 | #endif |
| 406 | |
| 407 | #if !defined(HAVE_SNPRINTF) && !defined(HAVE_C99_VSNPRINTF) |
| 408 | int snprintf(char *str,size_t count,const char *fmt,...); |
| 409 | #endif |
| 410 | |
| 411 | |
| 412 | #if !HAVE_STRERROR |
| 413 | extern char *sys_errlist[]; |
| 414 | #define strerror(i) sys_errlist[i] |
| 415 | #endif |
| 416 | |
| 417 | #ifndef HAVE_STRCHR |
| 418 | # define strchr index |
| 419 | # define strrchr rindex |
| 420 | #endif |
| 421 | |
| 422 | #ifndef HAVE_ERRNO_DECL |
| 423 | extern int errno; |
| 424 | #endif |
| 425 | |
| 426 | #define SUPPORT_LINKS HAVE_READLINK |
| 427 | #define SUPPORT_HARD_LINKS HAVE_LINK |
| 428 | |
| 429 | #ifndef HAVE_LCHOWN |
| 430 | #define lchown chown |
| 431 | #endif |
| 432 | |
| 433 | #define SIGNAL_CAST (RETSIGTYPE (*)()) |
| 434 | |
| 435 | #ifndef EWOULDBLOCK |
| 436 | #define EWOULDBLOCK EAGAIN |
| 437 | #endif |
| 438 | |
| 439 | #ifndef STDIN_FILENO |
| 440 | #define STDIN_FILENO 0 |
| 441 | #endif |
| 442 | |
| 443 | #ifndef STDOUT_FILENO |
| 444 | #define STDOUT_FILENO 1 |
| 445 | #endif |
| 446 | |
| 447 | #ifndef STDERR_FILENO |
| 448 | #define STDERR_FILENO 2 |
| 449 | #endif |
| 450 | |
| 451 | #ifndef S_IWUSR |
| 452 | #define S_IWUSR 0200 |
| 453 | #endif |
| 454 | |
| 455 | #ifndef _S_IFMT |
| 456 | #define _S_IFMT 0170000 |
| 457 | #endif |
| 458 | |
| 459 | #ifndef _S_IFLNK |
| 460 | #define _S_IFLNK 0120000 |
| 461 | #endif |
| 462 | |
| 463 | #ifndef S_ISLNK |
| 464 | #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK)) |
| 465 | #endif |
| 466 | |
| 467 | #ifndef S_ISBLK |
| 468 | #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK)) |
| 469 | #endif |
| 470 | |
| 471 | #ifndef S_ISCHR |
| 472 | #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR)) |
| 473 | #endif |
| 474 | |
| 475 | #ifndef S_ISSOCK |
| 476 | #ifdef _S_IFSOCK |
| 477 | #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK)) |
| 478 | #else |
| 479 | #define S_ISSOCK(mode) (0) |
| 480 | #endif |
| 481 | #endif |
| 482 | |
| 483 | #ifndef S_ISFIFO |
| 484 | #ifdef _S_IFIFO |
| 485 | #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO)) |
| 486 | #else |
| 487 | #define S_ISFIFO(mode) (0) |
| 488 | #endif |
| 489 | #endif |
| 490 | |
| 491 | #ifndef S_ISDIR |
| 492 | #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR)) |
| 493 | #endif |
| 494 | |
| 495 | #ifndef S_ISREG |
| 496 | #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG)) |
| 497 | #endif |
| 498 | |
| 499 | /* work out what fcntl flag to use for non-blocking */ |
| 500 | #ifdef O_NONBLOCK |
| 501 | # define NONBLOCK_FLAG O_NONBLOCK |
| 502 | #elif defined(SYSV) |
| 503 | # define NONBLOCK_FLAG O_NDELAY |
| 504 | #else |
| 505 | # define NONBLOCK_FLAG FNDELAY |
| 506 | #endif |
| 507 | |
| 508 | #ifndef INADDR_LOOPBACK |
| 509 | #define INADDR_LOOPBACK 0x7f000001 |
| 510 | #endif |
| 511 | |
| 512 | #ifndef INADDR_NONE |
| 513 | #define INADDR_NONE 0xffffffff |
| 514 | #endif |
| 515 | |
| 516 | #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode)) |
| 517 | |
| 518 | #ifndef ACCESSPERMS |
| 519 | #define ACCESSPERMS 0777 |
| 520 | #endif |
| 521 | /* Initial mask on permissions given to temporary files. Mask off setuid |
| 522 | bits and group access because of potential race-condition security |
| 523 | holes, and mask other access because mode 707 is bizarre */ |
| 524 | #define INITACCESSPERMS 0700 |
| 525 | |
| 526 | /* handler for null strings in printf format */ |
| 527 | #define NS(s) ((s)?(s):"<NULL>") |
| 528 | |
| 529 | /* use magic gcc attributes to catch format errors */ |
| 530 | void rprintf(enum logcode , const char *, ...) |
| 531 | #ifdef __GNUC__ |
| 532 | __attribute__ ((format (printf, 2, 3))) |
| 533 | #endif |
| 534 | ; |
| 535 | |
| 536 | /* This is just like rprintf, but it also tries to print some |
| 537 | * representation of the error code. Normally errcode = errno. */ |
| 538 | void rsyserr(enum logcode, int, const char *, ...) |
| 539 | #ifdef __GNUC__ |
| 540 | __attribute__ ((format (printf, 3, 4))) |
| 541 | #endif |
| 542 | ; |
| 543 | |
| 544 | #ifdef REPLACE_INET_NTOA |
| 545 | #define inet_ntoa rep_inet_ntoa |
| 546 | #endif |
| 547 | |
| 548 | |
| 549 | #ifndef HAVE_STRLCPY |
| 550 | size_t strlcpy(char *d, const char *s, size_t bufsize); |
| 551 | #endif |
| 552 | |
| 553 | #ifndef HAVE_STRLCAT |
| 554 | size_t strlcat(char *d, const char *s, size_t bufsize); |
| 555 | #endif |
| 556 | |
| 557 | #ifndef WEXITSTATUS |
| 558 | #define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF)) |
| 559 | #endif |
| 560 | |
| 561 | #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__) |
| 562 | |
| 563 | |
| 564 | extern int verbose; |
| 565 | |
| 566 | extern struct global_opts { |
| 567 | /** Network address family. **/ |
| 568 | int af_hint; |
| 569 | |
| 570 | /** Do not go into the background when run as --daemon. Good |
| 571 | * for debugging and required for running as a service on W32, |
| 572 | * or under Unix process-monitors. **/ |
| 573 | int no_detach; |
| 574 | } global_opts; |
| 575 | |
| 576 | |
| 577 | #ifndef HAVE_INET_NTOP |
| 578 | const char * |
| 579 | inet_ntop(int af, const void *src, char *dst, size_t size); |
| 580 | #endif /* !HAVE_INET_NTOP */ |
| 581 | |
| 582 | #ifndef HAVE_INET_PTON |
| 583 | int isc_net_pton(int af, const char *src, void *dst); |
| 584 | #endif |