| File: | src/usr.bin/rdistd/server.c |
| Warning: | line 1151, column 34 Call to function 'mktemp' is insecure as it always creates or uses insecure temporary file. Use 'mkstemp' instead |
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| 1 | /* $OpenBSD: server.c,v 1.47 2019/06/28 13:35:03 deraadt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1983 Regents of the University of California. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <ctype.h> |
| 33 | #include <dirent.h> |
| 34 | #include <errno(*__errno()).h> |
| 35 | #include <fcntl.h> |
| 36 | #include <grp.h> |
| 37 | #include <limits.h> |
| 38 | #include <stdio.h> |
| 39 | #include <stdlib.h> |
| 40 | #include <string.h> |
| 41 | #include <time.h> |
| 42 | #include <unistd.h> |
| 43 | |
| 44 | #include "server.h" |
| 45 | |
| 46 | /* |
| 47 | * Server routines |
| 48 | */ |
| 49 | |
| 50 | char tempname[sizeof _RDIST_TMP"rdistXXXXXXXX" + 1]; /* Tmp file name */ |
| 51 | char buf[BUFSIZ1024]; /* general purpose buffer */ |
| 52 | char target[PATH_MAX1024]; /* target/source directory name */ |
| 53 | char *ptarget; /* pointer to end of target name */ |
| 54 | int catname = 0; /* cat name to target name */ |
| 55 | char *sptarget[32]; /* stack of saved ptarget's for directories */ |
| 56 | char *fromhost = NULL((void *)0); /* Client hostname */ |
| 57 | static int64_t min_freespace = 0; /* Minimium free space on a filesystem */ |
| 58 | static int64_t min_freefiles = 0; /* Minimium free # files on a filesystem */ |
| 59 | int oumask; /* Old umask */ |
| 60 | |
| 61 | static int cattarget(char *); |
| 62 | static int setownership(char *, int, uid_t, gid_t, int); |
| 63 | static int setfilemode(char *, int, int, int); |
| 64 | static int fchog(int, char *, char *, char *, int); |
| 65 | static int removefile(struct stat *, int); |
| 66 | static void doclean(char *); |
| 67 | static void clean(char *); |
| 68 | static void dospecial(char *); |
| 69 | static void docmdspecial(void); |
| 70 | static void query(char *); |
| 71 | static int chkparent(char *, opt_t); |
| 72 | static char *savetarget(char *, opt_t); |
| 73 | static void recvfile(char *, opt_t, int, char *, char *, time_t, time_t, off_t); |
| 74 | static void recvdir(opt_t, int, char *, char *); |
| 75 | static void recvlink(char *, opt_t, int, off_t); |
| 76 | static void hardlink(char *); |
| 77 | static void setconfig(char *); |
| 78 | static void recvit(char *, int); |
| 79 | static void dochmog(char *); |
| 80 | static void settarget(char *, int); |
| 81 | |
| 82 | /* |
| 83 | * Cat "string" onto the target buffer with error checking. |
| 84 | */ |
| 85 | static int |
| 86 | cattarget(char *string) |
| 87 | { |
| 88 | if (strlen(string) + strlen(target) + 2 > sizeof(target)) { |
| 89 | message(MT_INFO0x0040, "target buffer is not large enough."); |
| 90 | return(-1); |
| 91 | } |
| 92 | if (!ptarget) { |
| 93 | message(MT_INFO0x0040, "NULL target pointer set."); |
| 94 | return(-10); |
| 95 | } |
| 96 | |
| 97 | (void) snprintf(ptarget, sizeof(target) - (ptarget - target), |
| 98 | "/%s", string); |
| 99 | |
| 100 | return(0); |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * Set uid and gid ownership of a file. |
| 105 | */ |
| 106 | static int |
| 107 | setownership(char *file, int fd, uid_t uid, gid_t gid, int islink) |
| 108 | { |
| 109 | static int is_root = -1; |
| 110 | int status = -1; |
| 111 | |
| 112 | /* |
| 113 | * We assume only the Superuser can change uid ownership. |
| 114 | */ |
| 115 | switch (is_root) { |
| 116 | case -1: |
| 117 | is_root = getuid() == 0; |
| 118 | if (is_root) |
| 119 | break; |
| 120 | /* FALLTHROUGH */ |
| 121 | case 0: |
| 122 | uid = -1; |
| 123 | break; |
| 124 | case 1: |
| 125 | break; |
| 126 | } |
| 127 | |
| 128 | if (fd != -1 && !islink) |
| 129 | status = fchown(fd, uid, gid); |
| 130 | else |
| 131 | status = fchownat(AT_FDCWD-100, file, uid, gid, |
| 132 | AT_SYMLINK_NOFOLLOW0x02); |
| 133 | |
| 134 | if (status == -1) { |
| 135 | if (uid == (uid_t)-1) |
| 136 | message(MT_NOTICE0x0100, "%s: chgrp %d failed: %s", |
| 137 | target, gid, SYSERRstrerror((*__errno()))); |
| 138 | else |
| 139 | message(MT_NOTICE0x0100, "%s: chown %d:%d failed: %s", |
| 140 | target, uid, gid, SYSERRstrerror((*__errno()))); |
| 141 | return(-1); |
| 142 | } |
| 143 | |
| 144 | return(0); |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Set mode of a file |
| 149 | */ |
| 150 | static int |
| 151 | setfilemode(char *file, int fd, int mode, int islink) |
| 152 | { |
| 153 | int status = -1; |
| 154 | |
| 155 | if (mode == -1) |
| 156 | return(0); |
| 157 | |
| 158 | if (islink) |
| 159 | status = fchmodat(AT_FDCWD-100, file, mode, AT_SYMLINK_NOFOLLOW0x02); |
| 160 | |
| 161 | if (fd != -1 && !islink) |
| 162 | status = fchmod(fd, mode); |
| 163 | |
| 164 | if (status == -1 && !islink) |
| 165 | status = chmod(file, mode); |
| 166 | |
| 167 | if (status == -1) { |
| 168 | message(MT_NOTICE0x0100, "%s: chmod failed: %s", target, SYSERRstrerror((*__errno()))); |
| 169 | return(-1); |
| 170 | } |
| 171 | |
| 172 | return(0); |
| 173 | } |
| 174 | /* |
| 175 | * Change owner, group and mode of file. |
| 176 | */ |
| 177 | static int |
| 178 | fchog(int fd, char *file, char *owner, char *group, int mode) |
| 179 | { |
| 180 | int i; |
| 181 | struct stat st; |
| 182 | uid_t uid; |
| 183 | gid_t gid; |
| 184 | gid_t primegid = (gid_t)-2; |
| 185 | |
| 186 | uid = userid; |
| 187 | if (userid == 0) { /* running as root; take anything */ |
| 188 | if (*owner == ':') { |
| 189 | uid = (uid_t) atoi(owner + 1); |
| 190 | } else if (strcmp(owner, locuser) != 0) { |
| 191 | if (uid_from_user(owner, &uid) == -1) { |
| 192 | if (mode != -1 && IS_ON(mode, S_ISUID)(mode & 0004000)) { |
| 193 | message(MT_NOTICE0x0100, |
| 194 | "%s: unknown login name \"%s\", clearing setuid", |
| 195 | target, owner); |
| 196 | mode &= ~S_ISUID0004000; |
| 197 | uid = 0; |
| 198 | } else |
| 199 | message(MT_NOTICE0x0100, |
| 200 | "%s: unknown login name \"%s\"", |
| 201 | target, owner); |
| 202 | } |
| 203 | } else { |
| 204 | uid = userid; |
| 205 | primegid = groupid; |
| 206 | } |
| 207 | if (*group == ':') { |
| 208 | gid = (gid_t)atoi(group + 1); |
| 209 | goto ok; |
| 210 | } |
| 211 | } else { /* not root, setuid only if user==owner */ |
| 212 | if (mode != -1) { |
| 213 | if (IS_ON(mode, S_ISUID)(mode & 0004000) && |
| 214 | strcmp(locuser, owner) != 0) |
| 215 | mode &= ~S_ISUID0004000; |
| 216 | if (mode) |
| 217 | mode &= ~S_ISVTX0001000; /* and strip sticky too */ |
| 218 | } |
| 219 | primegid = groupid; |
| 220 | } |
| 221 | |
| 222 | gid = (gid_t)-1; |
| 223 | if (*group == ':') { |
| 224 | gid = (gid_t) atoi(group + 1); |
| 225 | } else if (gid_from_group(group, &gid) == -1) { |
| 226 | if (mode != -1 && IS_ON(mode, S_ISGID)(mode & 0002000)) { |
| 227 | message(MT_NOTICE0x0100, |
| 228 | "%s: unknown group \"%s\", clearing setgid", |
| 229 | target, group); |
| 230 | mode &= ~S_ISGID0002000; |
| 231 | } else |
| 232 | message(MT_NOTICE0x0100, |
| 233 | "%s: unknown group \"%s\"", |
| 234 | target, group); |
| 235 | } |
| 236 | |
| 237 | if (userid && gid != (gid_t)-1 && gid != primegid) { |
| 238 | for (i = 0; i < gidsetlen; i++) { |
| 239 | if (gid == gidset[i]) |
| 240 | goto ok; |
| 241 | } |
| 242 | if (mode != -1 && IS_ON(mode, S_ISGID)(mode & 0002000)) { |
| 243 | message(MT_NOTICE0x0100, |
| 244 | "%s: user %s not in group %s, clearing setgid", |
| 245 | target, locuser, group); |
| 246 | mode &= ~S_ISGID0002000; |
| 247 | } |
| 248 | gid = (gid_t)-1; |
| 249 | } |
| 250 | ok: |
| 251 | if (stat(file, &st) == -1) { |
| 252 | error("%s: Stat failed %s", file, SYSERRstrerror((*__errno()))); |
| 253 | return -1; |
| 254 | } |
| 255 | /* |
| 256 | * Set uid and gid ownership. If that fails, strip setuid and |
| 257 | * setgid bits from mode. Once ownership is set, successful |
| 258 | * or otherwise, set the new file mode. |
| 259 | */ |
| 260 | if (setownership(file, fd, uid, gid, S_ISLNK(st.st_mode)((st.st_mode & 0170000) == 0120000)) < 0) { |
| 261 | if (mode != -1 && IS_ON(mode, S_ISUID)(mode & 0004000)) { |
| 262 | message(MT_NOTICE0x0100, |
| 263 | "%s: chown failed, clearing setuid", target); |
| 264 | mode &= ~S_ISUID0004000; |
| 265 | } |
| 266 | if (mode != -1 && IS_ON(mode, S_ISGID)(mode & 0002000)) { |
| 267 | message(MT_NOTICE0x0100, |
| 268 | "%s: chown failed, clearing setgid", target); |
| 269 | mode &= ~S_ISGID0002000; |
| 270 | } |
| 271 | } |
| 272 | (void) setfilemode(file, fd, mode, S_ISLNK(st.st_mode)((st.st_mode & 0170000) == 0120000)); |
| 273 | |
| 274 | |
| 275 | return(0); |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Remove a file or directory (recursively) and send back an acknowledge |
| 280 | * or an error message. |
| 281 | */ |
| 282 | static int |
| 283 | removefile(struct stat *statb, int silent) |
| 284 | { |
| 285 | DIR *d; |
| 286 | static struct dirent *dp; |
| 287 | char *cp; |
| 288 | struct stat stb; |
| 289 | char *optarget; |
| 290 | int len, failures = 0; |
| 291 | |
| 292 | switch (statb->st_mode & S_IFMT0170000) { |
| 293 | case S_IFREG0100000: |
| 294 | case S_IFLNK0120000: |
| 295 | case S_IFCHR0020000: |
| 296 | case S_IFBLK0060000: |
| 297 | case S_IFSOCK0140000: |
| 298 | case S_IFIFO0010000: |
| 299 | if (unlink(target) == -1) { |
| 300 | if (errno(*__errno()) == ETXTBSY26) { |
| 301 | if (!silent) |
| 302 | message(MT_REMOTE0x0400|MT_NOTICE0x0100, |
| 303 | "%s: unlink failed: %s", |
| 304 | target, SYSERRstrerror((*__errno()))); |
| 305 | return(0); |
| 306 | } else { |
| 307 | error("%s: unlink failed: %s", target, SYSERRstrerror((*__errno()))); |
| 308 | return(-1); |
| 309 | } |
| 310 | } |
| 311 | goto removed; |
| 312 | |
| 313 | case S_IFDIR0040000: |
| 314 | break; |
| 315 | |
| 316 | default: |
| 317 | error("%s: not a plain file", target); |
| 318 | return(-1); |
| 319 | } |
| 320 | |
| 321 | errno(*__errno()) = 0; |
| 322 | if ((d = opendir(target)) == NULL((void *)0)) { |
| 323 | error("%s: opendir failed: %s", target, SYSERRstrerror((*__errno()))); |
| 324 | return(-1); |
| 325 | } |
| 326 | |
| 327 | optarget = ptarget; |
| 328 | len = ptarget - target; |
| 329 | while ((dp = readdir(d)) != NULL((void *)0)) { |
| 330 | if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || |
| 331 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
| 332 | continue; |
| 333 | |
| 334 | if (len + 1 + (int)strlen(dp->d_name) >= PATH_MAX1024 - 1) { |
| 335 | if (!silent) |
| 336 | message(MT_REMOTE0x0400|MT_WARNING0x0010, |
| 337 | "%s/%s: Name too long", |
| 338 | target, dp->d_name); |
| 339 | continue; |
| 340 | } |
| 341 | ptarget = optarget; |
| 342 | *ptarget++ = '/'; |
| 343 | cp = dp->d_name; |
| 344 | while ((*ptarget++ = *cp++) != '\0') |
| 345 | continue; |
| 346 | ptarget--; |
| 347 | if (lstat(target, &stb) == -1) { |
| 348 | if (!silent) |
| 349 | message(MT_REMOTE0x0400|MT_WARNING0x0010, |
| 350 | "%s: lstat failed: %s", |
| 351 | target, SYSERRstrerror((*__errno()))); |
| 352 | continue; |
| 353 | } |
| 354 | if (removefile(&stb, 0) < 0) |
| 355 | ++failures; |
| 356 | } |
| 357 | (void) closedir(d); |
| 358 | ptarget = optarget; |
| 359 | *ptarget = CNULL'\0'; |
| 360 | |
| 361 | if (failures) |
| 362 | return(-1); |
| 363 | |
| 364 | if (rmdir(target) == -1) { |
| 365 | error("%s: rmdir failed: %s", target, SYSERRstrerror((*__errno()))); |
| 366 | return(-1); |
| 367 | } |
| 368 | removed: |
| 369 | #if NEWWAY |
| 370 | if (!silent) |
| 371 | message(MT_CHANGE0x0020|MT_REMOTE0x0400, "%s: removed", target); |
| 372 | #else |
| 373 | /* |
| 374 | * We use MT_NOTICE instead of MT_CHANGE because this function is |
| 375 | * sometimes called by other functions that are suppose to return a |
| 376 | * single ack() back to the client (rdist). This is a kludge until |
| 377 | * the Rdist protocol is re-done. Sigh. |
| 378 | */ |
| 379 | message(MT_NOTICE0x0100|MT_REMOTE0x0400, "%s: removed", target); |
| 380 | #endif |
| 381 | return(0); |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * Check the current directory (initialized by the 'T' command to server()) |
| 386 | * for extraneous files and remove them. |
| 387 | */ |
| 388 | static void |
| 389 | doclean(char *cp) |
| 390 | { |
| 391 | DIR *d; |
| 392 | struct dirent *dp; |
| 393 | struct stat stb; |
| 394 | char *optarget, *ep; |
| 395 | int len; |
| 396 | opt_t opts; |
| 397 | char targ[PATH_MAX1024*4]; |
| 398 | |
| 399 | opts = strtol(cp, &ep, 8); |
| 400 | if (*ep != CNULL'\0') { |
| 401 | error("clean: options not delimited"); |
| 402 | return; |
| 403 | } |
| 404 | if ((d = opendir(target)) == NULL((void *)0)) { |
| 405 | error("%s: opendir failed: %s", target, SYSERRstrerror((*__errno()))); |
| 406 | return; |
| 407 | } |
| 408 | ack()(void) sendcmd('\5', ((void *)0)); |
| 409 | |
| 410 | optarget = ptarget; |
| 411 | len = ptarget - target; |
| 412 | while ((dp = readdir(d)) != NULL((void *)0)) { |
| 413 | if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || |
| 414 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
| 415 | continue; |
| 416 | |
| 417 | if (len + 1 + (int)strlen(dp->d_name) >= PATH_MAX1024 - 1) { |
| 418 | message(MT_REMOTE0x0400|MT_WARNING0x0010, "%s/%s: Name too long", |
| 419 | target, dp->d_name); |
| 420 | continue; |
| 421 | } |
| 422 | ptarget = optarget; |
| 423 | *ptarget++ = '/'; |
| 424 | cp = dp->d_name; |
| 425 | while ((*ptarget++ = *cp++) != '\0') |
| 426 | continue; |
| 427 | ptarget--; |
| 428 | if (lstat(target, &stb) == -1) { |
| 429 | message(MT_REMOTE0x0400|MT_WARNING0x0010, "%s: lstat failed: %s", |
| 430 | target, SYSERRstrerror((*__errno()))); |
| 431 | continue; |
| 432 | } |
| 433 | |
| 434 | ENCODE(targ, dp->d_name)strvis(targ, dp->d_name, (0x04 | 0x08 | 0x10)); |
| 435 | (void) sendcmd(CC_QUERY'Q', "%s", targ); |
| 436 | (void) remline(cp = buf, sizeof(buf), TRUE1); |
| 437 | |
| 438 | if (*cp != CC_YES'Y') |
| 439 | continue; |
| 440 | |
| 441 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) |
| 442 | message(MT_REMOTE0x0400|MT_INFO0x0040, "%s: need to remove", |
| 443 | target); |
| 444 | else |
| 445 | (void) removefile(&stb, 0); |
| 446 | } |
| 447 | (void) closedir(d); |
| 448 | |
| 449 | ptarget = optarget; |
| 450 | *ptarget = CNULL'\0'; |
| 451 | } |
| 452 | |
| 453 | /* |
| 454 | * Frontend to doclean(). |
| 455 | */ |
| 456 | static void |
| 457 | clean(char *cp) |
| 458 | { |
| 459 | doclean(cp); |
| 460 | (void) sendcmd(CC_END'E', NULL((void *)0)); |
| 461 | (void) response(); |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Execute a shell command to handle special cases. |
| 466 | * We can't really set an alarm timeout here since we |
| 467 | * have no idea how long the command should take. |
| 468 | */ |
| 469 | static void |
| 470 | dospecial(char *xcmd) |
| 471 | { |
| 472 | char cmd[BUFSIZ1024]; |
| 473 | if (DECODE(cmd, xcmd)strunvis(cmd, xcmd) == -1) { |
| 474 | error("dospecial: Cannot decode command."); |
| 475 | return; |
| 476 | } |
| 477 | runcommand(cmd); |
| 478 | } |
| 479 | |
| 480 | /* |
| 481 | * Do a special cmd command. This differs from normal special |
| 482 | * commands in that it's done after an entire command has been updated. |
| 483 | * The list of updated target files is sent one at a time with RC_FILE |
| 484 | * commands. Each one is added to an environment variable defined by |
| 485 | * E_FILES. When an RC_COMMAND is finally received, the E_FILES variable |
| 486 | * is stuffed into our environment and a normal dospecial() command is run. |
| 487 | */ |
| 488 | static void |
| 489 | docmdspecial(void) |
| 490 | { |
| 491 | char *cp; |
| 492 | char *cmd, *env = NULL((void *)0); |
| 493 | int n; |
| 494 | size_t len; |
| 495 | |
| 496 | /* We're ready */ |
| 497 | ack()(void) sendcmd('\5', ((void *)0)); |
| 498 | |
| 499 | for ( ; ; ) { |
| 500 | n = remline(cp = buf, sizeof(buf), FALSE0); |
| 501 | if (n <= 0) { |
| 502 | error("cmdspecial: premature end of input."); |
| 503 | return; |
| 504 | } |
| 505 | |
| 506 | switch (*cp++) { |
| 507 | case RC_FILE'F': |
| 508 | if (env == NULL((void *)0)) { |
| 509 | len = (2 * sizeof(E_FILES"FILES")) + strlen(cp) + 10; |
| 510 | env = xmalloc(len); |
| 511 | (void) snprintf(env, len, "export %s;%s=%s", |
| 512 | E_FILES"FILES", E_FILES"FILES", cp); |
| 513 | } else { |
| 514 | len = strlen(env) + 1 + strlen(cp) + 1; |
| 515 | env = xrealloc(env, len); |
| 516 | (void) strlcat(env, ":", len); |
| 517 | (void) strlcat(env, cp, len); |
| 518 | } |
| 519 | ack()(void) sendcmd('\5', ((void *)0)); |
| 520 | break; |
| 521 | |
| 522 | case RC_COMMAND'C': |
| 523 | if (env) { |
| 524 | len = strlen(env) + 1 + strlen(cp) + 1; |
| 525 | env = xrealloc(env, len); |
| 526 | (void) strlcat(env, ";", len); |
| 527 | (void) strlcat(env, cp, len); |
| 528 | cmd = env; |
| 529 | } else |
| 530 | cmd = cp; |
| 531 | |
| 532 | dospecial(cmd); |
| 533 | if (env) |
| 534 | (void) free(env); |
| 535 | return; |
| 536 | |
| 537 | default: |
| 538 | error("Unknown cmdspecial command '%s'.", cp); |
| 539 | return; |
| 540 | } |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | /* |
| 545 | * Query. Check to see if file exists. Return one of the following: |
| 546 | * |
| 547 | * QC_ONNFS - resides on a NFS |
| 548 | * QC_ONRO - resides on a Read-Only filesystem |
| 549 | * QC_NO - doesn't exist |
| 550 | * QC_YESsize mtime - exists and its a regular file (size & mtime of file) |
| 551 | * QC_YES - exists and its a directory or symbolic link |
| 552 | * QC_ERRMSGmessage - error message |
| 553 | */ |
| 554 | static void |
| 555 | query(char *xname) |
| 556 | { |
| 557 | static struct stat stb; |
| 558 | int s = -1, stbvalid = 0; |
| 559 | char name[PATH_MAX1024]; |
| 560 | |
| 561 | if (DECODE(name, xname)strunvis(name, xname) == -1) { |
| 562 | error("query: Cannot decode filename"); |
| 563 | return; |
| 564 | } |
| 565 | |
| 566 | if (catname && cattarget(name) < 0) |
| 567 | return; |
| 568 | |
| 569 | if (IS_ON(options, DO_CHKNFS)(options & 0x0000200)) { |
| 570 | s = is_nfs_mounted(target, &stb, &stbvalid); |
| 571 | if (s > 0) |
| 572 | (void) sendcmd(QC_ONNFS'F', NULL((void *)0)); |
| 573 | |
| 574 | /* Either the above check was true or an error occurred */ |
| 575 | /* and is_nfs_mounted sent the error message */ |
| 576 | if (s != 0) { |
| 577 | *ptarget = CNULL'\0'; |
| 578 | return; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | if (IS_ON(options, DO_CHKREADONLY)(options & 0x0000400)) { |
| 583 | s = is_ro_mounted(target, &stb, &stbvalid); |
| 584 | if (s > 0) |
| 585 | (void) sendcmd(QC_ONRO'O', NULL((void *)0)); |
| 586 | |
| 587 | /* Either the above check was true or an error occurred */ |
| 588 | /* and is_ro_mounted sent the error message */ |
| 589 | if (s != 0) { |
| 590 | *ptarget = CNULL'\0'; |
| 591 | return; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | if (IS_ON(options, DO_CHKSYM)(options & 0x0020000)) { |
| 596 | if (is_symlinked(target, &stb, &stbvalid) > 0) { |
| 597 | (void) sendcmd(QC_SYM'l', NULL((void *)0)); |
| 598 | return; |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | /* |
| 603 | * If stbvalid is false, "stb" is not valid because the stat() |
| 604 | * by is_*_mounted() either failed or does not match "target". |
| 605 | */ |
| 606 | if (!stbvalid && lstat(target, &stb) == -1) { |
| 607 | if (errno(*__errno()) == ENOENT2) |
| 608 | (void) sendcmd(QC_NO'N', NULL((void *)0)); |
| 609 | else |
| 610 | error("%s: lstat failed: %s", target, SYSERRstrerror((*__errno()))); |
| 611 | *ptarget = CNULL'\0'; |
| 612 | return; |
| 613 | } |
| 614 | |
| 615 | switch (stb.st_mode & S_IFMT0170000) { |
| 616 | case S_IFLNK0120000: |
| 617 | case S_IFDIR0040000: |
| 618 | case S_IFREG0100000: |
| 619 | (void) sendcmd(QC_YES'Y', "%lld %lld %o %s %s", |
| 620 | (long long) stb.st_size, |
| 621 | (long long) stb.st_mtimest_mtim.tv_sec, |
| 622 | stb.st_mode & 07777, |
| 623 | getusername(stb.st_uid, target, options), |
| 624 | getgroupname(stb.st_gid, target, options)); |
| 625 | break; |
| 626 | |
| 627 | default: |
| 628 | error("%s: not a file or directory", target); |
| 629 | break; |
| 630 | } |
| 631 | *ptarget = CNULL'\0'; |
| 632 | } |
| 633 | |
| 634 | /* |
| 635 | * Check to see if parent directory exists and create one if not. |
| 636 | */ |
| 637 | static int |
| 638 | chkparent(char *name, opt_t opts) |
| 639 | { |
| 640 | char *cp; |
| 641 | struct stat stb; |
| 642 | int r = -1; |
| 643 | |
| 644 | debugmsg(DM_CALL0x01, "chkparent(%s, %#x) start\n", name, opts); |
| 645 | |
| 646 | cp = strrchr(name, '/'); |
| 647 | if (cp == NULL((void *)0) || cp == name) |
| 648 | return(0); |
| 649 | |
| 650 | *cp = CNULL'\0'; |
| 651 | |
| 652 | if (lstat(name, &stb) == -1) { |
| 653 | if (errno(*__errno()) == ENOENT2 && chkparent(name, opts) >= 0) { |
| 654 | if (mkdir(name, 0777 & ~oumask) == 0) { |
| 655 | message(MT_NOTICE0x0100, "%s: mkdir", name); |
| 656 | r = 0; |
| 657 | } else |
| 658 | debugmsg(DM_MISC0x10, |
| 659 | "chkparent(%s, %#04o) mkdir fail: %s\n", |
| 660 | name, opts, SYSERRstrerror((*__errno()))); |
| 661 | } |
| 662 | } else /* It exists */ |
| 663 | r = 0; |
| 664 | |
| 665 | /* Put back what we took away */ |
| 666 | *cp = '/'; |
| 667 | |
| 668 | return(r); |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * Save a copy of 'file' by renaming it. |
| 673 | */ |
| 674 | static char * |
| 675 | savetarget(char *file, opt_t opts) |
| 676 | { |
| 677 | static char savefile[PATH_MAX1024]; |
| 678 | |
| 679 | if (strlen(file) + sizeof(SAVE_SUFFIX".OLD") + 1 > PATH_MAX1024) { |
| 680 | error("%s: Cannot save: Save name too long", file); |
| 681 | return(NULL((void *)0)); |
| 682 | } |
| 683 | |
| 684 | if (IS_ON(opts, DO_HISTORY)(opts & 0x0100000)) { |
| 685 | int i; |
| 686 | struct stat st; |
| 687 | /* |
| 688 | * There is a race here, but the worst that can happen |
| 689 | * is to lose a version of the file |
| 690 | */ |
| 691 | for (i = 1; i < 1000; i++) { |
| 692 | (void) snprintf(savefile, sizeof(savefile), |
| 693 | "%s;%.3d", file, i); |
| 694 | if (lstat(savefile, &st) == -1 && errno(*__errno()) == ENOENT2) |
| 695 | break; |
| 696 | |
| 697 | } |
| 698 | if (i == 1000) { |
| 699 | message(MT_NOTICE0x0100, |
| 700 | "%s: More than 1000 versions for %s; reusing 1\n", |
| 701 | savefile, SYSERRstrerror((*__errno()))); |
| 702 | i = 1; |
| 703 | (void) snprintf(savefile, sizeof(savefile), |
| 704 | "%s;%.3d", file, i); |
| 705 | } |
| 706 | } |
| 707 | else { |
| 708 | (void) snprintf(savefile, sizeof(savefile), "%s%s", |
| 709 | file, SAVE_SUFFIX".OLD"); |
| 710 | |
| 711 | if (unlink(savefile) != 0 && errno(*__errno()) != ENOENT2) { |
| 712 | message(MT_NOTICE0x0100, "%s: remove failed: %s", |
| 713 | savefile, SYSERRstrerror((*__errno()))); |
| 714 | return(NULL((void *)0)); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | if (rename(file, savefile) != 0 && errno(*__errno()) != ENOENT2) { |
| 719 | error("%s -> %s: rename failed: %s", |
| 720 | file, savefile, SYSERRstrerror((*__errno()))); |
| 721 | return(NULL((void *)0)); |
| 722 | } |
| 723 | |
| 724 | return(savefile); |
| 725 | } |
| 726 | |
| 727 | /* |
| 728 | * Receive a file |
| 729 | */ |
| 730 | static void |
| 731 | recvfile(char *new, opt_t opts, int mode, char *owner, char *group, |
| 732 | time_t mtime, time_t atime, off_t size) |
| 733 | { |
| 734 | int f, wrerr, olderrno; |
| 735 | off_t i; |
| 736 | char *cp; |
| 737 | char *savefile = NULL((void *)0); |
| 738 | static struct stat statbuff; |
| 739 | |
| 740 | /* |
| 741 | * Create temporary file |
| 742 | */ |
| 743 | if (chkparent(new, opts) < 0 || (f = mkstemp(new)) == -1) { |
| 744 | error("%s: create failed: %s", new, SYSERRstrerror((*__errno()))); |
| 745 | return; |
| 746 | } |
| 747 | |
| 748 | /* |
| 749 | * Receive the file itself |
| 750 | */ |
| 751 | ack()(void) sendcmd('\5', ((void *)0)); |
| 752 | wrerr = 0; |
| 753 | olderrno = 0; |
| 754 | for (i = 0; i < size; i += BUFSIZ1024) { |
| 755 | off_t amt = BUFSIZ1024; |
| 756 | |
| 757 | cp = buf; |
| 758 | if (i + amt > size) |
| 759 | amt = size - i; |
| 760 | do { |
| 761 | ssize_t j; |
| 762 | |
| 763 | j = readrem(cp, amt); |
| 764 | if (j <= 0) { |
| 765 | (void) close(f); |
| 766 | (void) unlink(new); |
| 767 | fatalerr( |
| 768 | "Read error occurred while receiving file."); |
| 769 | finish(); |
| 770 | } |
| 771 | amt -= j; |
| 772 | cp += j; |
| 773 | } while (amt > 0); |
| 774 | amt = BUFSIZ1024; |
| 775 | if (i + amt > size) |
| 776 | amt = size - i; |
| 777 | if (wrerr == 0 && xwrite(f, buf, amt) != amt) { |
| 778 | olderrno = errno(*__errno()); |
| 779 | wrerr++; |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | if (response() < 0) { |
| 784 | (void) close(f); |
| 785 | (void) unlink(new); |
| 786 | return; |
| 787 | } |
| 788 | |
| 789 | if (wrerr) { |
| 790 | error("%s: Write error: %s", new, strerror(olderrno)); |
| 791 | (void) close(f); |
| 792 | (void) unlink(new); |
| 793 | return; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * Do file comparison if enabled |
| 798 | */ |
| 799 | if (IS_ON(opts, DO_COMPARE)(opts & 0x0000008)) { |
| 800 | FILE *f1, *f2; |
| 801 | int c; |
| 802 | |
| 803 | errno(*__errno()) = 0; /* fopen is not a syscall */ |
| 804 | if ((f1 = fopen(target, "r")) == NULL((void *)0)) { |
| 805 | error("%s: open for read failed: %s", target, SYSERRstrerror((*__errno()))); |
| 806 | (void) close(f); |
| 807 | (void) unlink(new); |
| 808 | return; |
| 809 | } |
| 810 | errno(*__errno()) = 0; |
| 811 | if ((f2 = fopen(new, "r")) == NULL((void *)0)) { |
| 812 | error("%s: open for read failed: %s", new, SYSERRstrerror((*__errno()))); |
| 813 | (void) fclose(f1); |
| 814 | (void) close(f); |
| 815 | (void) unlink(new); |
| 816 | return; |
| 817 | } |
| 818 | while ((c = getc(f1)(!__isthreaded ? (--(f1)->_r < 0 ? __srget(f1) : (int)( *(f1)->_p++)) : (getc)(f1))) == getc(f2)(!__isthreaded ? (--(f2)->_r < 0 ? __srget(f2) : (int)( *(f2)->_p++)) : (getc)(f2))) |
| 819 | if (c == EOF(-1)) { |
| 820 | debugmsg(DM_MISC0x10, |
| 821 | "Files are the same '%s' '%s'.", |
| 822 | target, new); |
| 823 | (void) fclose(f1); |
| 824 | (void) fclose(f2); |
| 825 | (void) close(f); |
| 826 | (void) unlink(new); |
| 827 | /* |
| 828 | * This isn't an error per-se, but we |
| 829 | * need to indicate to the master that |
| 830 | * the file was not updated. |
| 831 | */ |
| 832 | error(NULL((void *)0)); |
| 833 | return; |
| 834 | } |
| 835 | debugmsg(DM_MISC0x10, "Files are different '%s' '%s'.", |
| 836 | target, new); |
| 837 | (void) fclose(f1); |
| 838 | (void) fclose(f2); |
| 839 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) { |
| 840 | message(MT_REMOTE0x0400|MT_INFO0x0040, "%s: need to update", |
| 841 | target); |
| 842 | (void) close(f); |
| 843 | (void) unlink(new); |
| 844 | return; |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | /* |
| 849 | * Set owner, group, and file mode |
| 850 | */ |
| 851 | if (fchog(f, new, owner, group, mode) < 0) { |
| 852 | (void) close(f); |
| 853 | (void) unlink(new); |
| 854 | return; |
| 855 | } |
| 856 | (void) close(f); |
| 857 | |
| 858 | /* |
| 859 | * Perform utimes() after file is closed to make |
| 860 | * certain OS's, such as NeXT 2.1, happy. |
| 861 | */ |
| 862 | if (setfiletime(new, time(NULL((void *)0)), mtime) < 0) |
| 863 | message(MT_NOTICE0x0100, "%s: utimes failed: %s", new, SYSERRstrerror((*__errno()))); |
| 864 | |
| 865 | /* |
| 866 | * Try to save target file from being over-written |
| 867 | */ |
| 868 | if (IS_ON(opts, DO_SAVETARGETS)(opts & 0x0001000)) |
| 869 | if ((savefile = savetarget(target, opts)) == NULL((void *)0)) { |
| 870 | (void) unlink(new); |
| 871 | return; |
| 872 | } |
| 873 | |
| 874 | /* |
| 875 | * If the target is a directory, we need to remove it first |
| 876 | * before we can rename the new file. |
| 877 | */ |
| 878 | if ((stat(target, &statbuff) == 0) && S_ISDIR(statbuff.st_mode)((statbuff.st_mode & 0170000) == 0040000)) { |
| 879 | char *saveptr = ptarget; |
| 880 | |
| 881 | ptarget = &target[strlen(target)]; |
| 882 | removefile(&statbuff, 0); |
| 883 | ptarget = saveptr; |
| 884 | } |
| 885 | |
| 886 | /* |
| 887 | * Install new (temporary) file as the actual target |
| 888 | */ |
| 889 | if (rename(new, target) == -1) { |
| 890 | static const char fmt[] = "%s -> %s: rename failed: %s"; |
| 891 | struct stat stb; |
| 892 | /* |
| 893 | * If the rename failed due to "Text file busy", then |
| 894 | * try to rename the target file and retry the rename. |
| 895 | */ |
| 896 | switch (errno(*__errno())) { |
| 897 | case ETXTBSY26: |
| 898 | /* Save the target */ |
| 899 | if ((savefile = savetarget(target, opts)) != NULL((void *)0)) { |
| 900 | /* Retry installing new file as target */ |
| 901 | if (rename(new, target) == -1) { |
| 902 | error(fmt, new, target, SYSERRstrerror((*__errno()))); |
| 903 | /* Try to put back save file */ |
| 904 | if (rename(savefile, target) == -1) |
| 905 | error(fmt, |
| 906 | savefile, target, SYSERRstrerror((*__errno()))); |
| 907 | (void) unlink(new); |
| 908 | } else |
| 909 | message(MT_NOTICE0x0100, "%s: renamed to %s", |
| 910 | target, savefile); |
| 911 | /* |
| 912 | * XXX: We should remove the savefile here. |
| 913 | * But we are nice to nfs clients and |
| 914 | * we keep it. |
| 915 | */ |
| 916 | } |
| 917 | break; |
| 918 | case EISDIR21: |
| 919 | /* |
| 920 | * See if target is a directory and remove it if it is |
| 921 | */ |
| 922 | if (lstat(target, &stb) == 0) { |
| 923 | if (S_ISDIR(stb.st_mode)((stb.st_mode & 0170000) == 0040000)) { |
| 924 | char *optarget = ptarget; |
| 925 | for (ptarget = target; *ptarget; |
| 926 | ptarget++); |
| 927 | /* If we failed to remove, we'll catch |
| 928 | it later */ |
| 929 | (void) removefile(&stb, 1); |
| 930 | ptarget = optarget; |
| 931 | } |
| 932 | } |
| 933 | if (rename(new, target) >= 0) |
| 934 | break; |
| 935 | /*FALLTHROUGH*/ |
| 936 | |
| 937 | default: |
| 938 | error(fmt, new, target, SYSERRstrerror((*__errno()))); |
| 939 | (void) unlink(new); |
| 940 | break; |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | if (IS_ON(opts, DO_COMPARE)(opts & 0x0000008)) |
| 945 | message(MT_REMOTE0x0400|MT_CHANGE0x0020, "%s: updated", target); |
| 946 | else |
| 947 | ack()(void) sendcmd('\5', ((void *)0)); |
| 948 | } |
| 949 | |
| 950 | /* |
| 951 | * Receive a directory |
| 952 | */ |
| 953 | static void |
| 954 | recvdir(opt_t opts, int mode, char *owner, char *group) |
| 955 | { |
| 956 | static char lowner[100], lgroup[100]; |
| 957 | char *cp; |
| 958 | struct stat stb; |
| 959 | int s; |
| 960 | |
| 961 | s = lstat(target, &stb); |
| 962 | if (s == 0) { |
| 963 | /* |
| 964 | * If target is not a directory, remove it |
| 965 | */ |
| 966 | if (!S_ISDIR(stb.st_mode)((stb.st_mode & 0170000) == 0040000)) { |
| 967 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) |
| 968 | message(MT_NOTICE0x0100, "%s: need to remove", |
| 969 | target); |
| 970 | else { |
| 971 | if (unlink(target) == -1) { |
| 972 | error("%s: remove failed: %s", |
| 973 | target, SYSERRstrerror((*__errno()))); |
| 974 | return; |
| 975 | } |
| 976 | } |
| 977 | s = -1; |
| 978 | errno(*__errno()) = ENOENT2; |
| 979 | } else { |
| 980 | if (!IS_ON(opts, DO_NOCHKMODE)(opts & 0x0008000) && |
| 981 | (stb.st_mode & 07777) != mode) { |
| 982 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) |
| 983 | message(MT_NOTICE0x0100, |
| 984 | "%s: need to chmod to %#04o", |
| 985 | target, mode); |
| 986 | else if (chmod(target, mode) != 0) |
| 987 | message(MT_NOTICE0x0100, |
| 988 | "%s: chmod from %#04o to %#04o failed: %s", |
| 989 | target, |
| 990 | stb.st_mode & 07777, |
| 991 | mode, |
| 992 | SYSERRstrerror((*__errno()))); |
| 993 | else |
| 994 | message(MT_NOTICE0x0100, |
| 995 | "%s: chmod from %#04o to %#04o", |
| 996 | target, |
| 997 | stb.st_mode & 07777, |
| 998 | mode); |
| 999 | } |
| 1000 | |
| 1001 | /* |
| 1002 | * Check ownership and set if necessary |
| 1003 | */ |
| 1004 | lowner[0] = CNULL'\0'; |
| 1005 | lgroup[0] = CNULL'\0'; |
| 1006 | |
| 1007 | if (!IS_ON(opts, DO_NOCHKOWNER)(opts & 0x0004000) && owner) { |
| 1008 | int o; |
| 1009 | |
| 1010 | o = (owner[0] == ':') ? opts & DO_NUMCHKOWNER0x0080000 : |
| 1011 | opts; |
| 1012 | if ((cp = getusername(stb.st_uid, target, o)) |
| 1013 | != NULL((void *)0)) |
| 1014 | if (strcmp(owner, cp)) |
| 1015 | (void) strlcpy(lowner, cp, |
| 1016 | sizeof(lowner)); |
| 1017 | } |
| 1018 | if (!IS_ON(opts, DO_NOCHKGROUP)(opts & 0x0010000) && group) { |
| 1019 | int o; |
| 1020 | |
| 1021 | o = (group[0] == ':') ? opts & DO_NUMCHKGROUP0x0040000 : |
| 1022 | opts; |
| 1023 | if ((cp = getgroupname(stb.st_gid, target, o)) |
| 1024 | != NULL((void *)0)) |
| 1025 | if (strcmp(group, cp)) |
| 1026 | (void) strlcpy(lgroup, cp, |
| 1027 | sizeof(lgroup)); |
| 1028 | } |
| 1029 | |
| 1030 | /* |
| 1031 | * Need to set owner and/or group |
| 1032 | */ |
| 1033 | #define PRN(n) ((n[0] == ':') ? n+1 : n) |
| 1034 | if (lowner[0] != CNULL'\0' || lgroup[0] != CNULL'\0') { |
| 1035 | if (lowner[0] == CNULL'\0' && |
| 1036 | (cp = getusername(stb.st_uid, |
| 1037 | target, opts))) |
| 1038 | (void) strlcpy(lowner, cp, |
| 1039 | sizeof(lowner)); |
| 1040 | if (lgroup[0] == CNULL'\0' && |
| 1041 | (cp = getgroupname(stb.st_gid, |
| 1042 | target, opts))) |
| 1043 | (void) strlcpy(lgroup, cp, |
| 1044 | sizeof(lgroup)); |
| 1045 | |
| 1046 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) |
| 1047 | message(MT_NOTICE0x0100, |
| 1048 | "%s: need to chown from %s:%s to %s:%s", |
| 1049 | target, |
| 1050 | PRN(lowner), PRN(lgroup), |
| 1051 | PRN(owner), PRN(group)); |
| 1052 | else { |
| 1053 | if (fchog(-1, target, owner, |
| 1054 | group, -1) == 0) |
| 1055 | message(MT_NOTICE0x0100, |
| 1056 | "%s: chown from %s:%s to %s:%s", |
| 1057 | target, |
| 1058 | PRN(lowner), |
| 1059 | PRN(lgroup), |
| 1060 | PRN(owner), |
| 1061 | PRN(group)); |
| 1062 | } |
| 1063 | } |
| 1064 | #undef PRN |
| 1065 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1066 | return; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001)) { |
| 1071 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1072 | return; |
| 1073 | } |
| 1074 | |
| 1075 | /* |
| 1076 | * Create the directory |
| 1077 | */ |
| 1078 | if (s < 0) { |
| 1079 | if (errno(*__errno()) == ENOENT2) { |
| 1080 | if (mkdir(target, mode) == 0 || |
| 1081 | (chkparent(target, opts) == 0 && |
| 1082 | mkdir(target, mode) == 0)) { |
| 1083 | message(MT_NOTICE0x0100, "%s: mkdir", target); |
| 1084 | (void) fchog(-1, target, owner, group, mode); |
| 1085 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1086 | } else { |
| 1087 | error("%s: mkdir failed: %s", target, SYSERRstrerror((*__errno()))); |
| 1088 | ptarget = sptarget[--catname]; |
| 1089 | *ptarget = CNULL'\0'; |
| 1090 | } |
| 1091 | return; |
| 1092 | } |
| 1093 | } |
| 1094 | error("%s: lstat failed: %s", target, SYSERRstrerror((*__errno()))); |
| 1095 | ptarget = sptarget[--catname]; |
| 1096 | *ptarget = CNULL'\0'; |
| 1097 | } |
| 1098 | |
| 1099 | /* |
| 1100 | * Receive a link |
| 1101 | */ |
| 1102 | static void |
| 1103 | recvlink(char *new, opt_t opts, int mode, off_t size) |
| 1104 | { |
| 1105 | char tbuf[PATH_MAX1024], dbuf[BUFSIZ1024]; |
| 1106 | struct stat stb; |
| 1107 | char *optarget; |
| 1108 | int uptodate; |
| 1109 | off_t i; |
| 1110 | |
| 1111 | /* |
| 1112 | * Read basic link info |
| 1113 | */ |
| 1114 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1115 | (void) remline(buf, sizeof(buf), TRUE1); |
| 1116 | |
| 1117 | if (response() < 0) { |
| 1118 | err()(void) sendcmd('\1', ((void *)0)); |
| 1119 | return; |
| 1120 | } |
| 1121 | |
| 1122 | if (DECODE(dbuf, buf)strunvis(dbuf, buf) == -1) { |
| 1123 | error("recvlink: cannot decode symlink target"); |
| 1124 | return; |
| 1125 | } |
| 1126 | |
| 1127 | uptodate = 0; |
| 1128 | if ((i = readlink(target, tbuf, sizeof(tbuf)-1)) != -1) { |
| 1129 | tbuf[i] = '\0'; |
| 1130 | if (i == size && strncmp(dbuf, tbuf, (int) size) == 0) |
| 1131 | uptodate = 1; |
| 1132 | } |
| 1133 | mode &= 0777; |
| 1134 | |
| 1135 | if (IS_ON(opts, DO_VERIFY)(opts & 0x0000001) || uptodate) { |
| 1136 | if (uptodate) |
| 1137 | message(MT_REMOTE0x0400|MT_INFO0x0040, NULL((void *)0)); |
| 1138 | else |
| 1139 | message(MT_REMOTE0x0400|MT_INFO0x0040, "%s: need to update", |
| 1140 | target); |
| 1141 | if (IS_ON(opts, DO_COMPARE)(opts & 0x0000008)) |
| 1142 | return; |
| 1143 | (void) sendcmd(C_END'E', NULL((void *)0)); |
| 1144 | (void) response(); |
| 1145 | return; |
| 1146 | } |
| 1147 | |
| 1148 | /* |
| 1149 | * Make new symlink using a temporary name |
| 1150 | */ |
| 1151 | if (chkparent(new, opts) < 0 || mktemp(new) == NULL((void *)0) || |
Call to function 'mktemp' is insecure as it always creates or uses insecure temporary file. Use 'mkstemp' instead | |
| 1152 | symlink(dbuf, new) == -1) { |
| 1153 | error("%s -> %s: symlink failed: %s", new, dbuf, SYSERRstrerror((*__errno()))); |
| 1154 | return; |
| 1155 | } |
| 1156 | |
| 1157 | /* |
| 1158 | * See if target is a directory and remove it if it is |
| 1159 | */ |
| 1160 | if (lstat(target, &stb) == 0) { |
| 1161 | if (S_ISDIR(stb.st_mode)((stb.st_mode & 0170000) == 0040000)) { |
| 1162 | optarget = ptarget; |
| 1163 | for (ptarget = target; *ptarget; ptarget++); |
| 1164 | if (removefile(&stb, 0) < 0) { |
| 1165 | ptarget = optarget; |
| 1166 | (void) unlink(new); |
| 1167 | (void) sendcmd(C_END'E', NULL((void *)0)); |
| 1168 | (void) response(); |
| 1169 | return; |
| 1170 | } |
| 1171 | ptarget = optarget; |
| 1172 | } |
| 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * Install link as the target |
| 1177 | */ |
| 1178 | if (rename(new, target) == -1) { |
| 1179 | error("%s -> %s: symlink rename failed: %s", |
| 1180 | new, target, SYSERRstrerror((*__errno()))); |
| 1181 | (void) unlink(new); |
| 1182 | (void) sendcmd(C_END'E', NULL((void *)0)); |
| 1183 | (void) response(); |
| 1184 | return; |
| 1185 | } |
| 1186 | |
| 1187 | message(MT_REMOTE0x0400|MT_CHANGE0x0020, "%s: updated", target); |
| 1188 | |
| 1189 | /* |
| 1190 | * Indicate end of receive operation |
| 1191 | */ |
| 1192 | (void) sendcmd(C_END'E', NULL((void *)0)); |
| 1193 | (void) response(); |
| 1194 | } |
| 1195 | |
| 1196 | /* |
| 1197 | * Creat a hard link to existing file. |
| 1198 | */ |
| 1199 | static void |
| 1200 | hardlink(char *cmd) |
| 1201 | { |
| 1202 | struct stat stb; |
| 1203 | int exists = 0; |
| 1204 | char *xoldname, *xnewname; |
| 1205 | char *cp = cmd; |
| 1206 | static char expbuf[BUFSIZ1024]; |
| 1207 | char oldname[BUFSIZ1024], newname[BUFSIZ1024]; |
| 1208 | |
| 1209 | /* Skip over opts */ |
| 1210 | (void) strtol(cp, &cp, 8); |
| 1211 | if (*cp++ != ' ') { |
| 1212 | error("hardlink: options not delimited"); |
| 1213 | return; |
| 1214 | } |
| 1215 | |
| 1216 | xoldname = strtok(cp, " "); |
| 1217 | if (xoldname == NULL((void *)0)) { |
| 1218 | error("hardlink: oldname name not delimited"); |
| 1219 | return; |
| 1220 | } |
| 1221 | |
| 1222 | if (DECODE(oldname, xoldname)strunvis(oldname, xoldname) == -1) { |
| 1223 | error("hardlink: Cannot decode oldname"); |
| 1224 | return; |
| 1225 | } |
| 1226 | |
| 1227 | xnewname = strtok(NULL((void *)0), " "); |
| 1228 | if (xnewname == NULL((void *)0)) { |
| 1229 | error("hardlink: new name not specified"); |
| 1230 | return; |
| 1231 | } |
| 1232 | |
| 1233 | if (DECODE(newname, xnewname)strunvis(newname, xnewname) == -1) { |
| 1234 | error("hardlink: Cannot decode newname"); |
| 1235 | return; |
| 1236 | } |
| 1237 | |
| 1238 | if (exptilde(expbuf, oldname, sizeof(expbuf)) == NULL((void *)0)) { |
| 1239 | error("hardlink: tilde expansion failed"); |
| 1240 | return; |
| 1241 | } |
| 1242 | |
| 1243 | if (catname && cattarget(newname) < 0) { |
| 1244 | error("Cannot set newname target."); |
| 1245 | return; |
| 1246 | } |
| 1247 | |
| 1248 | if (lstat(target, &stb) == 0) { |
| 1249 | int mode = stb.st_mode & S_IFMT0170000; |
| 1250 | |
| 1251 | if (mode != S_IFREG0100000 && mode != S_IFLNK0120000) { |
| 1252 | error("%s: not a regular file", target); |
| 1253 | return; |
| 1254 | } |
| 1255 | exists = 1; |
| 1256 | } |
| 1257 | |
| 1258 | if (chkparent(target, options) < 0 ) { |
| 1259 | error("%s: no parent: %s ", target, SYSERRstrerror((*__errno()))); |
| 1260 | return; |
| 1261 | } |
| 1262 | if (exists && (unlink(target) == -1)) { |
| 1263 | error("%s: unlink failed: %s", target, SYSERRstrerror((*__errno()))); |
| 1264 | return; |
| 1265 | } |
| 1266 | if (linkat(AT_FDCWD-100, expbuf, AT_FDCWD-100, target, 0) == -1) { |
| 1267 | error("%s: cannot link to %s: %s", target, oldname, SYSERRstrerror((*__errno()))); |
| 1268 | return; |
| 1269 | } |
| 1270 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1271 | } |
| 1272 | |
| 1273 | /* |
| 1274 | * Set configuration information. |
| 1275 | * |
| 1276 | * A key letter is followed immediately by the value |
| 1277 | * to set. The keys are: |
| 1278 | * SC_FREESPACE - Set minimium free space of filesystem |
| 1279 | * SC_FREEFILES - Set minimium free number of files of filesystem |
| 1280 | */ |
| 1281 | static void |
| 1282 | setconfig(char *cmd) |
| 1283 | { |
| 1284 | char *cp = cmd; |
| 1285 | char *estr; |
| 1286 | const char *errstr; |
| 1287 | |
| 1288 | switch (*cp++) { |
| 1289 | case SC_HOSTNAME'H': /* Set hostname */ |
| 1290 | /* |
| 1291 | * Only use info if we don't know who this is. |
| 1292 | */ |
| 1293 | if (!fromhost) { |
| 1294 | fromhost = xstrdup(cp); |
| 1295 | message(MT_SYSLOG0x0200, "startup for %s", fromhost); |
| 1296 | setproctitle("serving %s", cp); |
| 1297 | } |
| 1298 | break; |
| 1299 | |
| 1300 | case SC_FREESPACE's': /* Minimium free space */ |
| 1301 | min_freespace = (int64_t)strtonum(cp, 0, LLONG_MAX9223372036854775807LL, &errstr); |
| 1302 | if (errstr) |
| 1303 | fatalerr("Minimum free space is %s: '%s'", errstr, |
| 1304 | optarg); |
| 1305 | break; |
| 1306 | |
| 1307 | case SC_FREEFILES'f': /* Minimium free files */ |
| 1308 | min_freefiles = (int64_t)strtonum(cp, 0, LLONG_MAX9223372036854775807LL, &errstr); |
| 1309 | if (errstr) |
| 1310 | fatalerr("Minimum free files is %s: '%s'", errstr, |
| 1311 | optarg); |
| 1312 | break; |
| 1313 | |
| 1314 | case SC_LOGGING'L': /* Logging options */ |
| 1315 | if ((estr = msgparseopts(cp, TRUE1)) != NULL((void *)0)) { |
| 1316 | fatalerr("Bad message option string (%s): %s", |
| 1317 | cp, estr); |
| 1318 | return; |
| 1319 | } |
| 1320 | break; |
| 1321 | |
| 1322 | case SC_DEFOWNER'o': |
| 1323 | (void) strlcpy(defowner, cp, sizeof(defowner)); |
| 1324 | break; |
| 1325 | |
| 1326 | case SC_DEFGROUP'g': |
| 1327 | (void) strlcpy(defgroup, cp, sizeof(defgroup)); |
| 1328 | break; |
| 1329 | |
| 1330 | default: |
| 1331 | message(MT_NOTICE0x0100, "Unknown config command \"%s\".", cp-1); |
| 1332 | return; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | /* |
| 1337 | * Receive something |
| 1338 | */ |
| 1339 | static void |
| 1340 | recvit(char *cmd, int type) |
| 1341 | { |
| 1342 | int mode; |
| 1343 | opt_t opts; |
| 1344 | off_t size; |
| 1345 | time_t mtime, atime; |
| 1346 | char *owner, *group, *file; |
| 1347 | char new[PATH_MAX1024]; |
| 1348 | char fileb[PATH_MAX1024]; |
| 1349 | int64_t freespace = -1, freefiles = -1; |
| 1350 | char *cp = cmd; |
| 1351 | |
| 1352 | /* |
| 1353 | * Get rdist option flags |
| 1354 | */ |
| 1355 | opts = strtol(cp, &cp, 8); |
| 1356 | if (*cp++ != ' ') { |
| 1357 | error("recvit: options not delimited"); |
| 1358 | return; |
| 1359 | } |
| 1360 | |
| 1361 | /* |
| 1362 | * Get file mode |
| 1363 | */ |
| 1364 | mode = strtol(cp, &cp, 8); |
| 1365 | if (*cp++ != ' ') { |
| 1366 | error("recvit: mode not delimited"); |
| 1367 | return; |
| 1368 | } |
| 1369 | |
| 1370 | /* |
| 1371 | * Get file size |
| 1372 | */ |
| 1373 | size = (off_t) strtoll(cp, &cp, 10); |
| 1374 | if (*cp++ != ' ') { |
| 1375 | error("recvit: size not delimited"); |
| 1376 | return; |
| 1377 | } |
| 1378 | |
| 1379 | /* |
| 1380 | * Get modification time |
| 1381 | */ |
| 1382 | mtime = (time_t) strtoll(cp, &cp, 10); |
| 1383 | if (*cp++ != ' ') { |
| 1384 | error("recvit: mtime not delimited"); |
| 1385 | return; |
| 1386 | } |
| 1387 | |
| 1388 | /* |
| 1389 | * Get access time |
| 1390 | */ |
| 1391 | atime = (time_t) strtoll(cp, &cp, 10); |
| 1392 | if (*cp++ != ' ') { |
| 1393 | error("recvit: atime not delimited"); |
| 1394 | return; |
| 1395 | } |
| 1396 | |
| 1397 | /* |
| 1398 | * Get file owner name |
| 1399 | */ |
| 1400 | owner = strtok(cp, " "); |
| 1401 | if (owner == NULL((void *)0)) { |
| 1402 | error("recvit: owner name not delimited"); |
| 1403 | return; |
| 1404 | } |
| 1405 | |
| 1406 | /* |
| 1407 | * Get file group name |
| 1408 | */ |
| 1409 | group = strtok(NULL((void *)0), " "); |
| 1410 | if (group == NULL((void *)0)) { |
| 1411 | error("recvit: group name not delimited"); |
| 1412 | return; |
| 1413 | } |
| 1414 | |
| 1415 | /* |
| 1416 | * Get file name. Can't use strtok() since there could |
| 1417 | * be white space in the file name. |
| 1418 | */ |
| 1419 | if (DECODE(fileb, group + strlen(group) + 1)strunvis(fileb, group + strlen(group) + 1) == -1) { |
| 1420 | error("recvit: Cannot decode file name"); |
| 1421 | return; |
| 1422 | } |
| 1423 | |
| 1424 | if (fileb[0] == '\0') { |
| 1425 | error("recvit: no file name"); |
| 1426 | return; |
| 1427 | } |
| 1428 | file = fileb; |
| 1429 | |
| 1430 | debugmsg(DM_MISC0x10, |
| 1431 | "recvit: opts = %#x mode = %#04o size = %lld mtime = %lld", |
| 1432 | opts, mode, (long long) size, (long long)mtime); |
| 1433 | debugmsg(DM_MISC0x10, |
| 1434 | "recvit: owner = '%s' group = '%s' file = '%s' catname = %d isdir = %d", |
| 1435 | owner, group, file, catname, (type == S_IFDIR0040000) ? 1 : 0); |
| 1436 | |
| 1437 | if (type == S_IFDIR0040000) { |
| 1438 | if ((size_t) catname >= sizeof(sptarget)) { |
| 1439 | error("%s: too many directory levels", target); |
| 1440 | return; |
| 1441 | } |
| 1442 | sptarget[catname] = ptarget; |
| 1443 | if (catname++) { |
| 1444 | *ptarget++ = '/'; |
| 1445 | while ((*ptarget++ = *file++) != '\0') |
| 1446 | continue; |
| 1447 | ptarget--; |
| 1448 | } |
| 1449 | } else { |
| 1450 | /* |
| 1451 | * Create name of temporary file |
| 1452 | */ |
| 1453 | if (catname && cattarget(file) < 0) { |
| 1454 | error("Cannot set file name."); |
| 1455 | return; |
| 1456 | } |
| 1457 | file = strrchr(target, '/'); |
| 1458 | if (file == NULL((void *)0)) |
| 1459 | (void) strlcpy(new, tempname, sizeof(new)); |
| 1460 | else if (file == target) |
| 1461 | (void) snprintf(new, sizeof(new), "/%s", tempname); |
| 1462 | else { |
| 1463 | *file = CNULL'\0'; |
| 1464 | (void) snprintf(new, sizeof(new), "%s/%s", target, |
| 1465 | tempname); |
| 1466 | *file = '/'; |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | /* |
| 1471 | * Check to see if there is enough free space and inodes |
| 1472 | * to install this file. |
| 1473 | */ |
| 1474 | if (min_freespace || min_freefiles) { |
| 1475 | /* Convert file size to kilobytes */ |
| 1476 | int64_t fsize = (int64_t)size / 1024; |
| 1477 | |
| 1478 | if (getfilesysinfo(target, &freespace, &freefiles) != 0) |
| 1479 | return; |
| 1480 | |
| 1481 | /* |
| 1482 | * filesystem values < 0 indicate unsupported or unavailable |
| 1483 | * information. |
| 1484 | */ |
| 1485 | if (min_freespace && (freespace >= 0) && |
| 1486 | (freespace - fsize < min_freespace)) { |
| 1487 | error( |
| 1488 | "%s: Not enough free space on filesystem: min %lld " |
| 1489 | "free %lld", target, min_freespace, freespace); |
| 1490 | return; |
| 1491 | } |
| 1492 | if (min_freefiles && (freefiles >= 0) && |
| 1493 | (freefiles - 1 < min_freefiles)) { |
| 1494 | error( |
| 1495 | "%s: Not enough free files on filesystem: min %lld free " |
| 1496 | "%lld", target, min_freefiles, freefiles); |
| 1497 | return; |
| 1498 | } |
| 1499 | } |
| 1500 | |
| 1501 | /* |
| 1502 | * Call appropriate receive function to receive file |
| 1503 | */ |
| 1504 | switch (type) { |
| 1505 | case S_IFDIR0040000: |
| 1506 | recvdir(opts, mode, owner, group); |
| 1507 | break; |
| 1508 | |
| 1509 | case S_IFLNK0120000: |
| 1510 | recvlink(new, opts, mode, size); |
| 1511 | break; |
| 1512 | |
| 1513 | case S_IFREG0100000: |
| 1514 | recvfile(new, opts, mode, owner, group, mtime, atime, size); |
| 1515 | break; |
| 1516 | |
| 1517 | default: |
| 1518 | error("%d: unknown file type", type); |
| 1519 | break; |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | /* |
| 1524 | * Chmog something |
| 1525 | */ |
| 1526 | static void |
| 1527 | dochmog(char *cmd) |
| 1528 | { |
| 1529 | int mode; |
| 1530 | opt_t opts; |
| 1531 | char *owner, *group, *file; |
| 1532 | char *cp = cmd; |
| 1533 | char fileb[PATH_MAX1024]; |
| 1534 | |
| 1535 | /* |
| 1536 | * Get rdist option flags |
| 1537 | */ |
| 1538 | opts = strtol(cp, &cp, 8); |
| 1539 | if (*cp++ != ' ') { |
| 1540 | error("dochmog: options not delimited"); |
| 1541 | return; |
| 1542 | } |
| 1543 | |
| 1544 | /* |
| 1545 | * Get file mode |
| 1546 | */ |
| 1547 | mode = strtol(cp, &cp, 8); |
| 1548 | if (*cp++ != ' ') { |
| 1549 | error("dochmog: mode not delimited"); |
| 1550 | return; |
| 1551 | } |
| 1552 | |
| 1553 | /* |
| 1554 | * Get file owner name |
| 1555 | */ |
| 1556 | owner = strtok(cp, " "); |
| 1557 | if (owner == NULL((void *)0)) { |
| 1558 | error("dochmog: owner name not delimited"); |
| 1559 | return; |
| 1560 | } |
| 1561 | |
| 1562 | /* |
| 1563 | * Get file group name |
| 1564 | */ |
| 1565 | group = strtok(NULL((void *)0), " "); |
| 1566 | if (group == NULL((void *)0)) { |
| 1567 | error("dochmog: group name not delimited"); |
| 1568 | return; |
| 1569 | } |
| 1570 | |
| 1571 | /* |
| 1572 | * Get file name. Can't use strtok() since there could |
| 1573 | * be white space in the file name. |
| 1574 | */ |
| 1575 | if (DECODE(fileb, group + strlen(group) + 1)strunvis(fileb, group + strlen(group) + 1) == -1) { |
| 1576 | error("dochmog: Cannot decode file name"); |
| 1577 | return; |
| 1578 | } |
| 1579 | |
| 1580 | if (fileb[0] == '\0') { |
| 1581 | error("dochmog: no file name"); |
| 1582 | return; |
| 1583 | } |
| 1584 | file = fileb; |
| 1585 | |
| 1586 | debugmsg(DM_MISC0x10, |
| 1587 | "dochmog: opts = %#x mode = %#04o", opts, mode); |
| 1588 | debugmsg(DM_MISC0x10, |
| 1589 | "dochmog: owner = '%s' group = '%s' file = '%s' catname = %d", |
| 1590 | owner, group, file, catname); |
| 1591 | |
| 1592 | if (catname && cattarget(file) < 0) { |
| 1593 | error("Cannot set newname target."); |
| 1594 | return; |
| 1595 | } |
| 1596 | |
| 1597 | (void) fchog(-1, target, owner, group, mode); |
| 1598 | |
| 1599 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1600 | } |
| 1601 | |
| 1602 | /* |
| 1603 | * Set target information |
| 1604 | */ |
| 1605 | static void |
| 1606 | settarget(char *cmd, int isdir) |
| 1607 | { |
| 1608 | char *cp = cmd; |
| 1609 | opt_t opts; |
| 1610 | char file[BUFSIZ1024]; |
| 1611 | |
| 1612 | catname = isdir; |
| 1613 | |
| 1614 | /* |
| 1615 | * Parse options for this target |
| 1616 | */ |
| 1617 | opts = strtol(cp, &cp, 8); |
| 1618 | if (*cp++ != ' ') { |
| 1619 | error("settarget: options not delimited"); |
| 1620 | return; |
| 1621 | } |
| 1622 | options = opts; |
| 1623 | |
| 1624 | if (DECODE(file, cp)strunvis(file, cp) == -1) { |
| 1625 | error("settarget: Cannot decode target name"); |
| 1626 | return; |
| 1627 | } |
| 1628 | |
| 1629 | /* |
| 1630 | * Handle target |
| 1631 | */ |
| 1632 | if (exptilde(target, cp, sizeof(target)) == NULL((void *)0)) |
| 1633 | return; |
| 1634 | ptarget = target; |
| 1635 | while (*ptarget) |
| 1636 | ptarget++; |
| 1637 | |
| 1638 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1639 | } |
| 1640 | |
| 1641 | /* |
| 1642 | * Cleanup in preparation for exiting. |
| 1643 | */ |
| 1644 | void |
| 1645 | cleanup(int dummy) |
| 1646 | { |
| 1647 | /* We don't need to do anything */ |
| 1648 | } |
| 1649 | |
| 1650 | /* |
| 1651 | * Server routine to read requests and process them. |
| 1652 | */ |
| 1653 | void |
| 1654 | server(void) |
| 1655 | { |
| 1656 | static char cmdbuf[BUFSIZ1024]; |
| 1657 | char *cp; |
| 1658 | int n, proto_version; |
| 1659 | |
| 1660 | if (setjmp(finish_jmpbuf)) |
| 1661 | return; |
| 1662 | (void) signal(SIGHUP1, sighandler); |
| 1663 | (void) signal(SIGINT2, sighandler); |
| 1664 | (void) signal(SIGQUIT3, sighandler); |
| 1665 | (void) signal(SIGTERM15, sighandler); |
| 1666 | (void) signal(SIGPIPE13, sighandler); |
| 1667 | (void) umask(oumask = umask(0)); |
| 1668 | (void) strlcpy(tempname, _RDIST_TMP"rdistXXXXXXXX", sizeof(tempname)); |
| 1669 | if (fromhost) { |
| 1670 | message(MT_SYSLOG0x0200, "Startup for %s", fromhost); |
| 1671 | #if defined(SETARGS) |
| 1672 | setproctitle("Serving %s", fromhost); |
| 1673 | #endif /* SETARGS */ |
| 1674 | } |
| 1675 | |
| 1676 | /* |
| 1677 | * Let client know we want it to send it's version number |
| 1678 | */ |
| 1679 | (void) sendcmd(S_VERSION'V', NULL((void *)0)); |
| 1680 | |
| 1681 | if (remline(cmdbuf, sizeof(cmdbuf), TRUE1) < 0) { |
| 1682 | error("server: expected control record"); |
| 1683 | return; |
| 1684 | } |
| 1685 | |
| 1686 | if (cmdbuf[0] != S_VERSION'V' || !isdigit((unsigned char)cmdbuf[1])) { |
| 1687 | error("Expected version command, received: \"%s\".", cmdbuf); |
| 1688 | return; |
| 1689 | } |
| 1690 | |
| 1691 | proto_version = atoi(&cmdbuf[1]); |
| 1692 | if (proto_version != VERSION6) { |
| 1693 | error("Protocol version %d is not supported.", proto_version); |
| 1694 | return; |
| 1695 | } |
| 1696 | |
| 1697 | /* Version number is okay */ |
| 1698 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1699 | |
| 1700 | /* |
| 1701 | * Main command loop |
| 1702 | */ |
| 1703 | for ( ; ; ) { |
| 1704 | n = remline(cp = cmdbuf, sizeof(cmdbuf), TRUE1); |
| 1705 | if (n == -1) /* EOF */ |
| 1706 | return; |
| 1707 | if (n == 0) { |
| 1708 | error("server: expected control record"); |
| 1709 | continue; |
| 1710 | } |
| 1711 | |
| 1712 | switch (*cp++) { |
| 1713 | case C_SETCONFIG'c': /* Configuration info */ |
| 1714 | setconfig(cp); |
| 1715 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1716 | continue; |
| 1717 | |
| 1718 | case C_DIRTARGET'T': /* init target file/directory name */ |
| 1719 | settarget(cp, TRUE1); |
| 1720 | continue; |
| 1721 | |
| 1722 | case C_TARGET't': /* init target file/directory name */ |
| 1723 | settarget(cp, FALSE0); |
| 1724 | continue; |
| 1725 | |
| 1726 | case C_RECVREG'R': /* Transfer a regular file. */ |
| 1727 | recvit(cp, S_IFREG0100000); |
| 1728 | continue; |
| 1729 | |
| 1730 | case C_RECVDIR'D': /* Transfer a directory. */ |
| 1731 | recvit(cp, S_IFDIR0040000); |
| 1732 | continue; |
| 1733 | |
| 1734 | case C_RECVSYMLINK'K': /* Transfer symbolic link. */ |
| 1735 | recvit(cp, S_IFLNK0120000); |
| 1736 | continue; |
| 1737 | |
| 1738 | case C_RECVHARDLINK'k': /* Transfer hard link. */ |
| 1739 | hardlink(cp); |
| 1740 | continue; |
| 1741 | |
| 1742 | case C_END'E': /* End of transfer */ |
| 1743 | *ptarget = CNULL'\0'; |
| 1744 | if (catname <= 0) { |
| 1745 | error("server: too many '%c's", C_END'E'); |
| 1746 | continue; |
| 1747 | } |
| 1748 | ptarget = sptarget[--catname]; |
| 1749 | *ptarget = CNULL'\0'; |
| 1750 | ack()(void) sendcmd('\5', ((void *)0)); |
| 1751 | continue; |
| 1752 | |
| 1753 | case C_CLEAN'C': /* Clean. Cleanup a directory */ |
| 1754 | clean(cp); |
| 1755 | continue; |
| 1756 | |
| 1757 | case C_QUERY'Q': /* Query file/directory */ |
| 1758 | query(cp); |
| 1759 | continue; |
| 1760 | |
| 1761 | case C_SPECIAL'S': /* Special. Execute commands */ |
| 1762 | dospecial(cp); |
| 1763 | continue; |
| 1764 | |
| 1765 | case C_CMDSPECIAL's': /* Cmd Special. Execute commands */ |
| 1766 | docmdspecial(); |
| 1767 | continue; |
| 1768 | |
| 1769 | case C_CHMOG'M': /* Set owner, group, mode */ |
| 1770 | dochmog(cp); |
| 1771 | continue; |
| 1772 | |
| 1773 | case C_ERRMSG'\1': /* Normal error message */ |
| 1774 | if (cp && *cp) |
| 1775 | message(MT_NERROR0x0002|MT_NOREMOTE0x1000, "%s", cp); |
| 1776 | continue; |
| 1777 | |
| 1778 | case C_FERRMSG'\2': /* Fatal error message */ |
| 1779 | if (cp && *cp) |
| 1780 | message(MT_FERROR0x0004|MT_NOREMOTE0x1000, "%s", cp); |
| 1781 | return; |
| 1782 | |
| 1783 | default: |
| 1784 | error("server: unknown command '%s'", cp - 1); |
| 1785 | case CNULL'\0': |
| 1786 | continue; |
| 1787 | } |
| 1788 | } |
| 1789 | } |