1 /* $NetBSD: rcp.c,v 1.44 2006/12/15 22:45:34 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1990, 1992, 1993 5 * The Regents of the University of California. 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 <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1990, 1992, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94"; 41 #else 42 __RCSID("$NetBSD: rcp.c,v 1.44 2006/12/15 22:45:34 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/stat.h> 48 #include <sys/time.h> 49 #include <sys/socket.h> 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 54 #include <ctype.h> 55 #include <dirent.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <netdb.h> 60 #include <pwd.h> 61 #include <signal.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 67 #include "pathnames.h" 68 #include "extern.h" 69 70 #define OPTIONS "46dfprt" 71 72 struct passwd *pwd; 73 char *pwname; 74 u_short port; 75 uid_t userid; 76 int errs, rem; 77 int pflag, iamremote, iamrecursive, targetshouldbedirectory; 78 int family = AF_UNSPEC; 79 static char dot[] = "."; 80 81 #define CMDNEEDS 64 82 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 83 84 int response(void); 85 void rsource(char *, struct stat *); 86 void sink(int, char *[]); 87 void source(int, char *[]); 88 void tolocal(int, char *[]); 89 void toremote(char *, int, char *[]); 90 void usage(void); 91 92 int 93 main(int argc, char *argv[]) 94 { 95 struct servent *sp; 96 int ch, fflag, tflag; 97 char *targ; 98 const char *shell; 99 100 fflag = tflag = 0; 101 while ((ch = getopt(argc, argv, OPTIONS)) != -1) 102 switch(ch) { /* User-visible flags. */ 103 case '4': 104 family = AF_INET; 105 break; 106 case '6': 107 family = AF_INET6; 108 break; 109 case 'K': 110 break; 111 case 'p': 112 pflag = 1; 113 break; 114 case 'r': 115 iamrecursive = 1; 116 break; 117 /* Server options. */ 118 case 'd': 119 targetshouldbedirectory = 1; 120 break; 121 case 'f': /* "from" */ 122 iamremote = 1; 123 fflag = 1; 124 break; 125 case 't': /* "to" */ 126 iamremote = 1; 127 tflag = 1; 128 break; 129 case '?': 130 default: 131 usage(); 132 } 133 argc -= optind; 134 argv += optind; 135 136 sp = getservbyname(shell = "shell", "tcp"); 137 if (sp == NULL) 138 errx(1, "%s/tcp: unknown service", shell); 139 port = sp->s_port; 140 141 if ((pwd = getpwuid(userid = getuid())) == NULL) 142 errx(1, "unknown user %d", (int)userid); 143 144 if ((pwname = strdup(pwd->pw_name)) == NULL) 145 err(1, NULL); 146 147 rem = STDIN_FILENO; /* XXX */ 148 149 if (fflag) { /* Follow "protocol", send data. */ 150 (void)response(); 151 source(argc, argv); 152 exit(errs); 153 } 154 155 if (tflag) { /* Receive data. */ 156 sink(argc, argv); 157 exit(errs); 158 } 159 160 if (argc < 2) 161 usage(); 162 if (argc > 2) 163 targetshouldbedirectory = 1; 164 165 rem = -1; 166 /* Command to be executed on remote system using "rsh". */ 167 (void)snprintf(cmd, sizeof(cmd), "rcp%s%s%s", 168 iamrecursive ? " -r" : "", pflag ? " -p" : "", 169 targetshouldbedirectory ? " -d" : ""); 170 171 (void)signal(SIGPIPE, lostconn); 172 173 if ((targ = colon(argv[argc - 1])) != NULL)/* Dest is remote host. */ 174 toremote(targ, argc, argv); 175 else { 176 tolocal(argc, argv); /* Dest is local host. */ 177 if (targetshouldbedirectory) 178 verifydir(argv[argc - 1]); 179 } 180 exit(errs); 181 /* NOTREACHED */ 182 } 183 184 void 185 toremote(char *targ, int argc, char *argv[]) 186 { 187 int i; 188 size_t len; 189 char *bp, *host, *src, *suser, *thost, *tuser; 190 191 *targ++ = 0; 192 if (*targ == 0) 193 targ = dot; 194 195 if ((thost = strchr(argv[argc - 1], '@')) != NULL) { 196 /* user@host */ 197 *thost++ = 0; 198 tuser = argv[argc - 1]; 199 if (*tuser == '\0') 200 tuser = NULL; 201 else if (!okname(tuser)) 202 exit(1); 203 } else { 204 thost = argv[argc - 1]; 205 tuser = NULL; 206 } 207 thost = unbracket(thost); 208 209 for (i = 0; i < argc - 1; i++) { 210 src = colon(argv[i]); 211 if (src) { /* remote to remote */ 212 *src++ = 0; 213 if (*src == 0) 214 src = dot; 215 host = strchr(argv[i], '@'); 216 len = strlen(_PATH_RSH) + strlen(argv[i]) + 217 strlen(src) + (tuser ? strlen(tuser) : 0) + 218 strlen(thost) + strlen(targ) + CMDNEEDS + 20; 219 if (!(bp = malloc(len))) 220 err(1, NULL); 221 if (host) { 222 *host++ = 0; 223 host = unbracket(host); 224 suser = argv[i]; 225 if (*suser == '\0') 226 suser = pwname; 227 else if (!okname(suser)) { 228 (void)free(bp); 229 continue; 230 } 231 (void)snprintf(bp, len, 232 "%s %s -l %s -n %s %s '%s%s%s:%s'", 233 _PATH_RSH, host, suser, cmd, src, 234 tuser ? tuser : "", tuser ? "@" : "", 235 thost, targ); 236 } else { 237 host = unbracket(argv[i]); 238 (void)snprintf(bp, len, 239 "exec %s %s -n %s %s '%s%s%s:%s'", 240 _PATH_RSH, argv[i], cmd, src, 241 tuser ? tuser : "", tuser ? "@" : "", 242 thost, targ); 243 } 244 (void)susystem(bp); 245 (void)free(bp); 246 } else { /* local to remote */ 247 if (rem == -1) { 248 len = strlen(targ) + CMDNEEDS + 20; 249 if (!(bp = malloc(len))) 250 err(1, NULL); 251 (void)snprintf(bp, len, "%s -t %s", cmd, targ); 252 host = thost; 253 rem = rcmd_af(&host, port, pwname, 254 tuser ? tuser : pwname, 255 bp, NULL, family); 256 if (rem < 0) 257 exit(1); 258 if (response() < 0) 259 exit(1); 260 (void)free(bp); 261 } 262 source(1, argv+i); 263 } 264 } 265 } 266 267 void 268 tolocal(int argc, char *argv[]) 269 { 270 int i; 271 size_t len; 272 char *bp, *host, *src, *suser; 273 274 for (i = 0; i < argc - 1; i++) { 275 if (!(src = colon(argv[i]))) { /* Local to local. */ 276 len = strlen(_PATH_CP) + strlen(argv[i]) + 277 strlen(argv[argc - 1]) + 20; 278 if (!(bp = malloc(len))) 279 err(1, NULL); 280 (void)snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, 281 iamrecursive ? " -r" : "", pflag ? " -p" : "", 282 argv[i], argv[argc - 1]); 283 if (susystem(bp)) 284 ++errs; 285 (void)free(bp); 286 continue; 287 } 288 *src++ = 0; 289 if (*src == 0) 290 src = dot; 291 if ((host = strchr(argv[i], '@')) == NULL) { 292 host = argv[i]; 293 suser = pwname; 294 } else { 295 *host++ = 0; 296 suser = argv[i]; 297 if (*suser == '\0') 298 suser = pwname; 299 else if (!okname(suser)) 300 continue; 301 } 302 host = unbracket(host); 303 len = strlen(src) + CMDNEEDS + 20; 304 if ((bp = malloc(len)) == NULL) 305 err(1, NULL); 306 (void)snprintf(bp, len, "%s -f %s", cmd, src); 307 rem = 308 rcmd_af(&host, port, pwname, suser, bp, NULL, family); 309 (void)free(bp); 310 if (rem < 0) { 311 ++errs; 312 continue; 313 } 314 sink(1, argv + argc - 1); 315 (void)close(rem); 316 rem = -1; 317 } 318 } 319 320 void 321 source(int argc, char *argv[]) 322 { 323 struct stat stb; 324 static BUF buffer; 325 BUF *bp; 326 off_t i; 327 off_t amt; 328 int fd, haderr, indx, result; 329 char *last, *name, buf[BUFSIZ]; 330 331 for (indx = 0; indx < argc; ++indx) { 332 name = argv[indx]; 333 if ((fd = open(name, O_RDONLY, 0)) < 0) 334 goto syserr; 335 if (fstat(fd, &stb)) { 336 syserr: run_err("%s: %s", name, strerror(errno)); 337 goto next; 338 } 339 switch (stb.st_mode & S_IFMT) { 340 case S_IFREG: 341 break; 342 case S_IFDIR: 343 if (iamrecursive) { 344 rsource(name, &stb); 345 goto next; 346 } 347 /* FALLTHROUGH */ 348 default: 349 run_err("%s: not a regular file", name); 350 goto next; 351 } 352 if ((last = strrchr(name, '/')) == NULL) 353 last = name; 354 else 355 ++last; 356 if (pflag) { 357 /* 358 * Make it compatible with possible future 359 * versions expecting microseconds. 360 */ 361 (void)snprintf(buf, sizeof(buf), "T%ld %ld %ld %ld\n", 362 (long)stb.st_mtimespec.tv_sec, 363 (long)stb.st_mtimespec.tv_nsec / 1000, 364 (long)stb.st_atimespec.tv_sec, 365 (long)stb.st_atimespec.tv_nsec / 1000); 366 (void)write(rem, buf, strlen(buf)); 367 if (response() < 0) 368 goto next; 369 } 370 #define RCPMODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO) 371 (void)snprintf(buf, sizeof(buf), "C%04o %lld %s\n", 372 stb.st_mode & RCPMODEMASK, (long long)stb.st_size, last); 373 (void)write(rem, buf, strlen(buf)); 374 if (response() < 0) 375 goto next; 376 if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) { 377 next: (void)close(fd); 378 continue; 379 } 380 381 /* Keep writing after an error so that we stay sync'd up. */ 382 haderr = 0; 383 for (i = 0; i < stb.st_size; i += bp->cnt) { 384 amt = bp->cnt; 385 if (i + amt > stb.st_size) 386 amt = stb.st_size - i; 387 if (!haderr) { 388 result = read(fd, bp->buf, (size_t)amt); 389 if (result != amt) 390 haderr = result >= 0 ? EIO : errno; 391 } 392 if (haderr) 393 (void)write(rem, bp->buf, (size_t)amt); 394 else { 395 result = write(rem, bp->buf, (size_t)amt); 396 if (result != amt) 397 haderr = result >= 0 ? EIO : errno; 398 } 399 } 400 if (close(fd) && !haderr) 401 haderr = errno; 402 if (!haderr) 403 (void)write(rem, "", 1); 404 else 405 run_err("%s: %s", name, strerror(haderr)); 406 (void)response(); 407 } 408 } 409 410 void 411 rsource(char *name, struct stat *statp) 412 { 413 DIR *dirp; 414 struct dirent *dp; 415 char *last, *vect[1], path[MAXPATHLEN]; 416 417 if (!(dirp = opendir(name))) { 418 run_err("%s: %s", name, strerror(errno)); 419 return; 420 } 421 last = strrchr(name, '/'); 422 if (last == 0) 423 last = name; 424 else 425 last++; 426 if (pflag) { 427 (void)snprintf(path, sizeof(path), "T%ld %ld %ld %ld\n", 428 (long)statp->st_mtimespec.tv_sec, 429 (long)statp->st_mtimespec.tv_nsec / 1000, 430 (long)statp->st_atimespec.tv_sec, 431 (long)statp->st_atimespec.tv_nsec / 1000); 432 (void)write(rem, path, strlen(path)); 433 if (response() < 0) { 434 (void)closedir(dirp); 435 return; 436 } 437 } 438 (void)snprintf(path, sizeof(path), 439 "D%04o %d %s\n", statp->st_mode & RCPMODEMASK, 0, last); 440 (void)write(rem, path, strlen(path)); 441 if (response() < 0) { 442 (void)closedir(dirp); 443 return; 444 } 445 while ((dp = readdir(dirp)) != NULL) { 446 if (dp->d_ino == 0) 447 continue; 448 if (!strcmp(dp->d_name, dot) || !strcmp(dp->d_name, "..")) 449 continue; 450 if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) { 451 run_err("%s/%s: name too long", name, dp->d_name); 452 continue; 453 } 454 (void)snprintf(path, sizeof(path), "%s/%s", name, dp->d_name); 455 vect[0] = path; 456 source(1, vect); 457 } 458 (void)closedir(dirp); 459 (void)write(rem, "E\n", 2); 460 (void)response(); 461 } 462 463 void 464 sink(int argc, char *argv[]) 465 { 466 static BUF buffer; 467 struct stat stb; 468 struct timeval tv[2]; 469 enum { YES, NO, DISPLAYED } wrerr; 470 BUF *bp; 471 ssize_t j; 472 off_t i; 473 off_t amt; 474 off_t count; 475 int exists, first, ofd; 476 mode_t mask; 477 mode_t mode; 478 mode_t omode; 479 int setimes, targisdir; 480 int wrerrno = 0; /* pacify gcc */ 481 char ch, *cp, *np, *targ, *vect[1], buf[BUFSIZ]; 482 const char *why; 483 off_t size; 484 485 #define atime tv[0] 486 #define mtime tv[1] 487 #define SCREWUP(str) { why = str; goto screwup; } 488 489 setimes = targisdir = 0; 490 mask = umask(0); 491 if (!pflag) 492 (void)umask(mask); 493 if (argc != 1) { 494 run_err("ambiguous target"); 495 exit(1); 496 } 497 targ = *argv; 498 if (targetshouldbedirectory) 499 verifydir(targ); 500 (void)write(rem, "", 1); 501 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 502 targisdir = 1; 503 for (first = 1;; first = 0) { 504 cp = buf; 505 if (read(rem, cp, 1) <= 0) 506 return; 507 if (*cp++ == '\n') 508 SCREWUP("unexpected <newline>"); 509 do { 510 if (read(rem, &ch, sizeof(ch)) != sizeof(ch)) 511 SCREWUP("lost connection"); 512 *cp++ = ch; 513 } while (cp < &buf[BUFSIZ - 1] && ch != '\n'); 514 *cp = 0; 515 516 if (buf[0] == '\01' || buf[0] == '\02') { 517 if (iamremote == 0) 518 (void)write(STDERR_FILENO, 519 buf + 1, strlen(buf + 1)); 520 if (buf[0] == '\02') 521 exit(1); 522 ++errs; 523 continue; 524 } 525 if (buf[0] == 'E') { 526 (void)write(rem, "", 1); 527 return; 528 } 529 530 if (ch == '\n') 531 *--cp = 0; 532 533 #define getnum(t) (t) = 0; while (isdigit((unsigned char)*cp)) (t) = (t) * 10 + (*cp++ - '0'); 534 cp = buf; 535 if (*cp == 'T') { 536 setimes++; 537 cp++; 538 getnum(mtime.tv_sec); 539 if (*cp++ != ' ') 540 SCREWUP("mtime.sec not delimited"); 541 getnum(mtime.tv_usec); 542 if (*cp++ != ' ') 543 SCREWUP("mtime.usec not delimited"); 544 getnum(atime.tv_sec); 545 if (*cp++ != ' ') 546 SCREWUP("atime.sec not delimited"); 547 getnum(atime.tv_usec); 548 if (*cp++ != '\0') 549 SCREWUP("atime.usec not delimited"); 550 (void)write(rem, "", 1); 551 continue; 552 } 553 if (*cp != 'C' && *cp != 'D') { 554 /* 555 * Check for the case "rcp remote:foo\* local:bar". 556 * In this case, the line "No match." can be returned 557 * by the shell before the rcp command on the remote is 558 * executed so the ^Aerror_message convention isn't 559 * followed. 560 */ 561 if (first) { 562 run_err("%s", cp); 563 exit(1); 564 } 565 SCREWUP("expected control record"); 566 } 567 mode = 0; 568 for (++cp; cp < buf + 5; cp++) { 569 if (*cp < '0' || *cp > '7') 570 SCREWUP("bad mode"); 571 mode = (mode << 3) | (*cp - '0'); 572 } 573 if (*cp++ != ' ') 574 SCREWUP("mode not delimited"); 575 576 for (size = 0; isdigit((unsigned char)*cp);) 577 size = size * 10 + (*cp++ - '0'); 578 if (*cp++ != ' ') 579 SCREWUP("size not delimited"); 580 if (targisdir) { 581 static char *namebuf; 582 static int cursize; 583 size_t need; 584 585 need = strlen(targ) + strlen(cp) + 250; 586 if (need > cursize) { 587 if (!(namebuf = malloc(need))) 588 run_err("%s", strerror(errno)); 589 } 590 (void)snprintf(namebuf, need, "%s%s%s", targ, 591 *targ ? "/" : "", cp); 592 np = namebuf; 593 } else 594 np = targ; 595 exists = stat(np, &stb) == 0; 596 if (buf[0] == 'D') { 597 int mod_flag = pflag; 598 if (exists) { 599 if (!S_ISDIR(stb.st_mode)) { 600 errno = ENOTDIR; 601 goto bad; 602 } 603 if (pflag) 604 (void)chmod(np, mode); 605 } else { 606 /* Handle copying from a read-only directory */ 607 mod_flag = 1; 608 if (mkdir(np, mode | S_IRWXU) < 0) 609 goto bad; 610 } 611 vect[0] = np; 612 sink(1, vect); 613 if (setimes) { 614 setimes = 0; 615 if (utimes(np, tv) < 0) 616 run_err("%s: set times: %s", 617 np, strerror(errno)); 618 } 619 if (mod_flag) 620 (void)chmod(np, mode); 621 continue; 622 } 623 omode = mode; 624 mode |= S_IWRITE; 625 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { 626 bad: run_err("%s: %s", np, strerror(errno)); 627 continue; 628 } 629 (void)write(rem, "", 1); 630 if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) { 631 (void)close(ofd); 632 continue; 633 } 634 cp = bp->buf; 635 wrerr = NO; 636 count = 0; 637 for (i = 0; i < size; i += BUFSIZ) { 638 amt = BUFSIZ; 639 if (i + amt > size) 640 amt = size - i; 641 count += amt; 642 do { 643 j = read(rem, cp, (size_t)amt); 644 if (j == -1) { 645 run_err("%s", j ? strerror(errno) : 646 "dropped connection"); 647 exit(1); 648 } 649 amt -= j; 650 cp += j; 651 } while (amt > 0); 652 if (count == bp->cnt) { 653 /* Keep reading so we stay sync'd up. */ 654 if (wrerr == NO) { 655 j = write(ofd, bp->buf, (size_t)count); 656 if (j != count) { 657 wrerr = YES; 658 wrerrno = j >= 0 ? EIO : errno; 659 } 660 } 661 count = 0; 662 cp = bp->buf; 663 } 664 } 665 if (count != 0 && wrerr == NO && 666 (j = write(ofd, bp->buf, (size_t)count)) != count) { 667 wrerr = YES; 668 wrerrno = j >= 0 ? EIO : errno; 669 } 670 if (ftruncate(ofd, size)) { 671 run_err("%s: truncate: %s", np, strerror(errno)); 672 wrerr = DISPLAYED; 673 } 674 if (pflag) { 675 if (exists || omode != mode) 676 if (fchmod(ofd, omode)) 677 run_err("%s: set mode: %s", 678 np, strerror(errno)); 679 } else { 680 if (!exists && omode != mode) 681 if (fchmod(ofd, omode & ~mask)) 682 run_err("%s: set mode: %s", 683 np, strerror(errno)); 684 } 685 #ifndef __SVR4 686 if (setimes && wrerr == NO) { 687 setimes = 0; 688 if (futimes(ofd, tv) < 0) { 689 run_err("%s: set times: %s", 690 np, strerror(errno)); 691 wrerr = DISPLAYED; 692 } 693 } 694 #endif 695 (void)close(ofd); 696 #ifdef __SVR4 697 if (setimes && wrerr == NO) { 698 setimes = 0; 699 if (utimes(np, tv) < 0) { 700 run_err("%s: set times: %s", 701 np, strerror(errno)); 702 wrerr = DISPLAYED; 703 } 704 } 705 #endif 706 (void)response(); 707 switch(wrerr) { 708 case YES: 709 run_err("%s: write: %s", np, strerror(wrerrno)); 710 break; 711 case NO: 712 (void)write(rem, "", 1); 713 break; 714 case DISPLAYED: 715 break; 716 } 717 } 718 screwup: 719 run_err("protocol error: %s", why); 720 exit(1); 721 /* NOTREACHED */ 722 } 723 724 725 int 726 response(void) 727 { 728 char ch, *cp, resp, rbuf[BUFSIZ]; 729 730 if (read(rem, &resp, sizeof(resp)) != sizeof(resp)) 731 lostconn(0); 732 733 cp = rbuf; 734 switch(resp) { 735 case 0: /* ok */ 736 return (0); 737 default: 738 *cp++ = resp; 739 /* FALLTHROUGH */ 740 case 1: /* error, followed by error msg */ 741 case 2: /* fatal error, "" */ 742 do { 743 if (read(rem, &ch, sizeof(ch)) != sizeof(ch)) 744 lostconn(0); 745 *cp++ = ch; 746 } while (cp < &rbuf[BUFSIZ] && ch != '\n'); 747 748 if (!iamremote) 749 (void)write(STDERR_FILENO, rbuf, (size_t)(cp - rbuf)); 750 ++errs; 751 if (resp == 1) 752 return (-1); 753 exit(1); 754 } 755 /* NOTREACHED */ 756 } 757 758 void 759 usage(void) 760 { 761 (void)fprintf(stderr, 762 "usage: rcp [-46p] f1 f2; or: rcp [-46pr] f1 ... fn directory\n"); 763 exit(1); 764 /* NOTREACHED */ 765 } 766 767 #include <stdarg.h> 768 769 770 void 771 run_err(const char *fmt, ...) 772 { 773 static FILE *fp; 774 va_list ap; 775 776 ++errs; 777 if (fp == NULL && !(fp = fdopen(rem, "w"))) 778 return; 779 780 va_start(ap, fmt); 781 782 (void)fprintf(fp, "%c", 0x01); 783 (void)fprintf(fp, "rcp: "); 784 (void)vfprintf(fp, fmt, ap); 785 (void)fprintf(fp, "\n"); 786 (void)fflush(fp); 787 va_end(ap); 788 789 if (!iamremote) { 790 va_start(ap, fmt); 791 vwarnx(fmt, ap); 792 va_end(ap); 793 } 794 } 795