1 /* $OpenBSD: scp.c,v 1.248 2022/05/13 06:31:50 djm Exp $ */ 2 /* 3 * scp - secure remote copy. This is basically patched BSD rcp which 4 * uses ssh to do the data transfer (instead of using rcmd). 5 * 6 * NOTE: This version should NOT be suid root. (This uses ssh to 7 * do the transfer and ssh has the necessary privileges.) 8 * 9 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi> 10 * 11 * As far as I am concerned, the code I have written for this software 12 * can be used freely for any purpose. Any derived versions of this 13 * software must be clearly marked as such, and if the derived work is 14 * incompatible with the protocol description in the RFC file, it must be 15 * called by a name other than "ssh" or "Secure Shell". 16 */ 17 /* 18 * Copyright (c) 1999 Theo de Raadt. All rights reserved. 19 * Copyright (c) 1999 Aaron Campbell. All rights reserved. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 31 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42 /* 43 * Parts from: 44 * 45 * Copyright (c) 1983, 1990, 1992, 1993, 1995 46 * The Regents of the University of California. All rights reserved. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. Neither the name of the University nor the names of its contributors 57 * may be used to endorse or promote products derived from this software 58 * without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 */ 73 74 #include "includes.h" 75 76 #include <sys/types.h> 77 #ifdef HAVE_SYS_STAT_H 78 # include <sys/stat.h> 79 #endif 80 #ifdef HAVE_POLL_H 81 #include <poll.h> 82 #else 83 # ifdef HAVE_SYS_POLL_H 84 # include <sys/poll.h> 85 # endif 86 #endif 87 #ifdef HAVE_SYS_TIME_H 88 # include <sys/time.h> 89 #endif 90 #include <sys/wait.h> 91 #include <sys/uio.h> 92 93 #include <ctype.h> 94 #include <dirent.h> 95 #include <errno.h> 96 #include <fcntl.h> 97 #ifdef HAVE_FNMATCH_H 98 #include <fnmatch.h> 99 #endif 100 #ifdef USE_SYSTEM_GLOB 101 # include <glob.h> 102 #else 103 # include "openbsd-compat/glob.h" 104 #endif 105 #ifdef HAVE_LIBGEN_H 106 #include <libgen.h> 107 #endif 108 #include <limits.h> 109 #include <locale.h> 110 #include <pwd.h> 111 #include <signal.h> 112 #include <stdarg.h> 113 #ifdef HAVE_STDINT_H 114 # include <stdint.h> 115 #endif 116 #include <stdio.h> 117 #include <stdlib.h> 118 #include <string.h> 119 #include <time.h> 120 #include <unistd.h> 121 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS) 122 #include <vis.h> 123 #endif 124 125 #include "xmalloc.h" 126 #include "ssh.h" 127 #include "atomicio.h" 128 #include "pathnames.h" 129 #include "log.h" 130 #include "misc.h" 131 #include "progressmeter.h" 132 #include "utf8.h" 133 #include "sftp.h" 134 135 #include "sftp-common.h" 136 #include "sftp-client.h" 137 138 extern char *__progname; 139 140 #define COPY_BUFLEN 16384 141 142 int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *); 143 int do_cmd2(char *, char *, int, char *, int, int); 144 145 /* Struct for addargs */ 146 arglist args; 147 arglist remote_remote_args; 148 149 /* Bandwidth limit */ 150 long long limit_kbps = 0; 151 struct bwlimit bwlimit; 152 153 /* Name of current file being transferred. */ 154 char *curfile; 155 156 /* This is set to non-zero to enable verbose mode. */ 157 int verbose_mode = 0; 158 LogLevel log_level = SYSLOG_LEVEL_INFO; 159 160 /* This is set to zero if the progressmeter is not desired. */ 161 int showprogress = 1; 162 163 /* 164 * This is set to non-zero if remote-remote copy should be piped 165 * through this process. 166 */ 167 int throughlocal = 1; 168 169 /* Non-standard port to use for the ssh connection or -1. */ 170 int sshport = -1; 171 172 /* This is the program to execute for the secured connection. ("ssh" or -S) */ 173 char *ssh_program = _PATH_SSH_PROGRAM; 174 175 /* This is used to store the pid of ssh_program */ 176 pid_t do_cmd_pid = -1; 177 pid_t do_cmd_pid2 = -1; 178 179 /* Needed for sftp */ 180 volatile sig_atomic_t interrupted = 0; 181 182 int remote_glob(struct sftp_conn *, const char *, int, 183 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ 184 185 static void 186 killchild(int signo) 187 { 188 if (do_cmd_pid > 1) { 189 kill(do_cmd_pid, signo ? signo : SIGTERM); 190 waitpid(do_cmd_pid, NULL, 0); 191 } 192 if (do_cmd_pid2 > 1) { 193 kill(do_cmd_pid2, signo ? signo : SIGTERM); 194 waitpid(do_cmd_pid2, NULL, 0); 195 } 196 197 if (signo) 198 _exit(1); 199 exit(1); 200 } 201 202 static void 203 suspone(int pid, int signo) 204 { 205 int status; 206 207 if (pid > 1) { 208 kill(pid, signo); 209 while (waitpid(pid, &status, WUNTRACED) == -1 && 210 errno == EINTR) 211 ; 212 } 213 } 214 215 static void 216 suspchild(int signo) 217 { 218 suspone(do_cmd_pid, signo); 219 suspone(do_cmd_pid2, signo); 220 kill(getpid(), SIGSTOP); 221 } 222 223 static int 224 do_local_cmd(arglist *a) 225 { 226 u_int i; 227 int status; 228 pid_t pid; 229 230 if (a->num == 0) 231 fatal("do_local_cmd: no arguments"); 232 233 if (verbose_mode) { 234 fprintf(stderr, "Executing:"); 235 for (i = 0; i < a->num; i++) 236 fmprintf(stderr, " %s", a->list[i]); 237 fprintf(stderr, "\n"); 238 } 239 if ((pid = fork()) == -1) 240 fatal("do_local_cmd: fork: %s", strerror(errno)); 241 242 if (pid == 0) { 243 execvp(a->list[0], a->list); 244 perror(a->list[0]); 245 exit(1); 246 } 247 248 do_cmd_pid = pid; 249 ssh_signal(SIGTERM, killchild); 250 ssh_signal(SIGINT, killchild); 251 ssh_signal(SIGHUP, killchild); 252 253 while (waitpid(pid, &status, 0) == -1) 254 if (errno != EINTR) 255 fatal("do_local_cmd: waitpid: %s", strerror(errno)); 256 257 do_cmd_pid = -1; 258 259 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 260 return (-1); 261 262 return (0); 263 } 264 265 /* 266 * This function executes the given command as the specified user on the 267 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This 268 * assigns the input and output file descriptors on success. 269 */ 270 271 int 272 do_cmd(char *program, char *host, char *remuser, int port, int subsystem, 273 char *cmd, int *fdin, int *fdout, pid_t *pid) 274 { 275 int pin[2], pout[2], reserved[2]; 276 277 if (verbose_mode) 278 fmprintf(stderr, 279 "Executing: program %s host %s, user %s, command %s\n", 280 program, host, 281 remuser ? remuser : "(unspecified)", cmd); 282 283 if (port == -1) 284 port = sshport; 285 286 /* 287 * Reserve two descriptors so that the real pipes won't get 288 * descriptors 0 and 1 because that will screw up dup2 below. 289 */ 290 if (pipe(reserved) == -1) 291 fatal("pipe: %s", strerror(errno)); 292 293 /* Create a socket pair for communicating with ssh. */ 294 if (pipe(pin) == -1) 295 fatal("pipe: %s", strerror(errno)); 296 if (pipe(pout) == -1) 297 fatal("pipe: %s", strerror(errno)); 298 299 /* Free the reserved descriptors. */ 300 close(reserved[0]); 301 close(reserved[1]); 302 303 ssh_signal(SIGTSTP, suspchild); 304 ssh_signal(SIGTTIN, suspchild); 305 ssh_signal(SIGTTOU, suspchild); 306 307 /* Fork a child to execute the command on the remote host using ssh. */ 308 *pid = fork(); 309 if (*pid == 0) { 310 /* Child. */ 311 close(pin[1]); 312 close(pout[0]); 313 dup2(pin[0], 0); 314 dup2(pout[1], 1); 315 close(pin[0]); 316 close(pout[1]); 317 318 replacearg(&args, 0, "%s", program); 319 if (port != -1) { 320 addargs(&args, "-p"); 321 addargs(&args, "%d", port); 322 } 323 if (remuser != NULL) { 324 addargs(&args, "-l"); 325 addargs(&args, "%s", remuser); 326 } 327 if (subsystem) 328 addargs(&args, "-s"); 329 addargs(&args, "--"); 330 addargs(&args, "%s", host); 331 addargs(&args, "%s", cmd); 332 333 execvp(program, args.list); 334 perror(program); 335 exit(1); 336 } else if (*pid == -1) { 337 fatal("fork: %s", strerror(errno)); 338 } 339 /* Parent. Close the other side, and return the local side. */ 340 close(pin[0]); 341 *fdout = pin[1]; 342 close(pout[1]); 343 *fdin = pout[0]; 344 ssh_signal(SIGTERM, killchild); 345 ssh_signal(SIGINT, killchild); 346 ssh_signal(SIGHUP, killchild); 347 return 0; 348 } 349 350 /* 351 * This function executes a command similar to do_cmd(), but expects the 352 * input and output descriptors to be setup by a previous call to do_cmd(). 353 * This way the input and output of two commands can be connected. 354 */ 355 int 356 do_cmd2(char *host, char *remuser, int port, char *cmd, 357 int fdin, int fdout) 358 { 359 int status; 360 pid_t pid; 361 362 if (verbose_mode) 363 fmprintf(stderr, 364 "Executing: 2nd program %s host %s, user %s, command %s\n", 365 ssh_program, host, 366 remuser ? remuser : "(unspecified)", cmd); 367 368 if (port == -1) 369 port = sshport; 370 371 /* Fork a child to execute the command on the remote host using ssh. */ 372 pid = fork(); 373 if (pid == 0) { 374 dup2(fdin, 0); 375 dup2(fdout, 1); 376 377 replacearg(&args, 0, "%s", ssh_program); 378 if (port != -1) { 379 addargs(&args, "-p"); 380 addargs(&args, "%d", port); 381 } 382 if (remuser != NULL) { 383 addargs(&args, "-l"); 384 addargs(&args, "%s", remuser); 385 } 386 addargs(&args, "-oBatchMode=yes"); 387 addargs(&args, "--"); 388 addargs(&args, "%s", host); 389 addargs(&args, "%s", cmd); 390 391 execvp(ssh_program, args.list); 392 perror(ssh_program); 393 exit(1); 394 } else if (pid == -1) { 395 fatal("fork: %s", strerror(errno)); 396 } 397 while (waitpid(pid, &status, 0) == -1) 398 if (errno != EINTR) 399 fatal("do_cmd2: waitpid: %s", strerror(errno)); 400 return 0; 401 } 402 403 typedef struct { 404 size_t cnt; 405 char *buf; 406 } BUF; 407 408 BUF *allocbuf(BUF *, int, int); 409 void lostconn(int); 410 int okname(char *); 411 void run_err(const char *,...) 412 __attribute__((__format__ (printf, 1, 2))) 413 __attribute__((__nonnull__ (1))); 414 int note_err(const char *,...) 415 __attribute__((__format__ (printf, 1, 2))); 416 void verifydir(char *); 417 418 struct passwd *pwd; 419 uid_t userid; 420 int errs, remin, remout, remin2, remout2; 421 int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 422 423 #define CMDNEEDS 64 424 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 425 426 enum scp_mode_e { 427 MODE_SCP, 428 MODE_SFTP 429 }; 430 431 int response(void); 432 void rsource(char *, struct stat *); 433 void sink(int, char *[], const char *); 434 void source(int, char *[]); 435 void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 436 void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 437 void usage(void); 438 439 void source_sftp(int, char *, char *, struct sftp_conn *); 440 void sink_sftp(int, char *, const char *, struct sftp_conn *); 441 void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 442 char *, char *); 443 444 int 445 main(int argc, char **argv) 446 { 447 int ch, fflag, tflag, status, n; 448 char **newargv, *argv0; 449 const char *errstr; 450 extern char *optarg; 451 extern int optind; 452 enum scp_mode_e mode = MODE_SFTP; 453 char *sftp_direct = NULL; 454 455 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 456 sanitise_stdfd(); 457 458 msetlocale(); 459 460 /* Copy argv, because we modify it */ 461 argv0 = argv[0]; 462 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 463 for (n = 0; n < argc; n++) 464 newargv[n] = xstrdup(argv[n]); 465 argv = newargv; 466 467 __progname = ssh_get_progname(argv[0]); 468 469 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 470 471 memset(&args, '\0', sizeof(args)); 472 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 473 args.list = remote_remote_args.list = NULL; 474 addargs(&args, "%s", ssh_program); 475 addargs(&args, "-x"); 476 addargs(&args, "-oPermitLocalCommand=no"); 477 addargs(&args, "-oClearAllForwardings=yes"); 478 addargs(&args, "-oRemoteCommand=none"); 479 addargs(&args, "-oRequestTTY=no"); 480 481 fflag = Tflag = tflag = 0; 482 while ((ch = getopt(argc, argv, 483 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:")) != -1) { 484 switch (ch) { 485 /* User-visible flags. */ 486 case '1': 487 fatal("SSH protocol v.1 is no longer supported"); 488 break; 489 case '2': 490 /* Ignored */ 491 break; 492 case 'A': 493 case '4': 494 case '6': 495 case 'C': 496 addargs(&args, "-%c", ch); 497 addargs(&remote_remote_args, "-%c", ch); 498 break; 499 case 'D': 500 sftp_direct = optarg; 501 break; 502 case '3': 503 throughlocal = 1; 504 break; 505 case 'R': 506 throughlocal = 0; 507 break; 508 case 'o': 509 case 'c': 510 case 'i': 511 case 'F': 512 case 'J': 513 addargs(&remote_remote_args, "-%c", ch); 514 addargs(&remote_remote_args, "%s", optarg); 515 addargs(&args, "-%c", ch); 516 addargs(&args, "%s", optarg); 517 break; 518 case 'O': 519 mode = MODE_SCP; 520 break; 521 case 's': 522 mode = MODE_SFTP; 523 break; 524 case 'P': 525 sshport = a2port(optarg); 526 if (sshport <= 0) 527 fatal("bad port \"%s\"\n", optarg); 528 break; 529 case 'B': 530 addargs(&remote_remote_args, "-oBatchmode=yes"); 531 addargs(&args, "-oBatchmode=yes"); 532 break; 533 case 'l': 534 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 535 &errstr); 536 if (errstr != NULL) 537 usage(); 538 limit_kbps *= 1024; /* kbps */ 539 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 540 break; 541 case 'p': 542 pflag = 1; 543 break; 544 case 'r': 545 iamrecursive = 1; 546 break; 547 case 'S': 548 ssh_program = xstrdup(optarg); 549 break; 550 case 'v': 551 addargs(&args, "-v"); 552 addargs(&remote_remote_args, "-v"); 553 if (verbose_mode == 0) 554 log_level = SYSLOG_LEVEL_DEBUG1; 555 else if (log_level < SYSLOG_LEVEL_DEBUG3) 556 log_level++; 557 verbose_mode = 1; 558 break; 559 case 'q': 560 addargs(&args, "-q"); 561 addargs(&remote_remote_args, "-q"); 562 showprogress = 0; 563 break; 564 565 /* Server options. */ 566 case 'd': 567 targetshouldbedirectory = 1; 568 break; 569 case 'f': /* "from" */ 570 iamremote = 1; 571 fflag = 1; 572 break; 573 case 't': /* "to" */ 574 iamremote = 1; 575 tflag = 1; 576 #ifdef HAVE_CYGWIN 577 setmode(0, O_BINARY); 578 #endif 579 break; 580 case 'T': 581 Tflag = 1; 582 break; 583 default: 584 usage(); 585 } 586 } 587 argc -= optind; 588 argv += optind; 589 590 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 591 592 /* Do this last because we want the user to be able to override it */ 593 addargs(&args, "-oForwardAgent=no"); 594 595 if (iamremote) 596 mode = MODE_SCP; 597 598 if ((pwd = getpwuid(userid = getuid())) == NULL) 599 fatal("unknown user %u", (u_int) userid); 600 601 if (!isatty(STDOUT_FILENO)) 602 showprogress = 0; 603 604 if (pflag) { 605 /* Cannot pledge: -p allows setuid/setgid files... */ 606 } else { 607 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 608 NULL) == -1) { 609 perror("pledge"); 610 exit(1); 611 } 612 } 613 614 remin = STDIN_FILENO; 615 remout = STDOUT_FILENO; 616 617 if (fflag) { 618 /* Follow "protocol", send data. */ 619 (void) response(); 620 source(argc, argv); 621 exit(errs != 0); 622 } 623 if (tflag) { 624 /* Receive data. */ 625 sink(argc, argv, NULL); 626 exit(errs != 0); 627 } 628 if (argc < 2) 629 usage(); 630 if (argc > 2) 631 targetshouldbedirectory = 1; 632 633 remin = remout = -1; 634 do_cmd_pid = -1; 635 /* Command to be executed on remote system using "ssh". */ 636 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 637 verbose_mode ? " -v" : "", 638 iamrecursive ? " -r" : "", pflag ? " -p" : "", 639 targetshouldbedirectory ? " -d" : ""); 640 641 (void) ssh_signal(SIGPIPE, lostconn); 642 643 if (colon(argv[argc - 1])) /* Dest is remote host. */ 644 toremote(argc, argv, mode, sftp_direct); 645 else { 646 if (targetshouldbedirectory) 647 verifydir(argv[argc - 1]); 648 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 649 } 650 /* 651 * Finally check the exit status of the ssh process, if one was forked 652 * and no error has occurred yet 653 */ 654 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 655 if (remin != -1) 656 (void) close(remin); 657 if (remout != -1) 658 (void) close(remout); 659 if (waitpid(do_cmd_pid, &status, 0) == -1) 660 errs = 1; 661 else { 662 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 663 errs = 1; 664 } 665 } 666 exit(errs != 0); 667 } 668 669 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 670 static int 671 scpio(void *_cnt, size_t s) 672 { 673 off_t *cnt = (off_t *)_cnt; 674 675 *cnt += s; 676 refresh_progress_meter(0); 677 if (limit_kbps > 0) 678 bandwidth_limit(&bwlimit, s); 679 return 0; 680 } 681 682 static int 683 do_times(int fd, int verb, const struct stat *sb) 684 { 685 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 686 char buf[(20 + 7 + 2) * 2 + 2]; 687 688 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 689 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 690 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 691 if (verb) { 692 fprintf(stderr, "File mtime %lld atime %lld\n", 693 (long long)sb->st_mtime, (long long)sb->st_atime); 694 fprintf(stderr, "Sending file timestamps: %s", buf); 695 } 696 (void) atomicio(vwrite, fd, buf, strlen(buf)); 697 return (response()); 698 } 699 700 static int 701 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 702 char **pathp) 703 { 704 int r; 705 706 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 707 if (r == 0 && *pathp == NULL) 708 *pathp = xstrdup("."); 709 return r; 710 } 711 712 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 713 static int 714 append(char *cp, char ***ap, size_t *np) 715 { 716 char **tmp; 717 718 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 719 return -1; 720 tmp[(*np)] = cp; 721 (*np)++; 722 *ap = tmp; 723 return 0; 724 } 725 726 /* 727 * Finds the start and end of the first brace pair in the pattern. 728 * returns 0 on success or -1 for invalid patterns. 729 */ 730 static int 731 find_brace(const char *pattern, int *startp, int *endp) 732 { 733 int i; 734 int in_bracket, brace_level; 735 736 *startp = *endp = -1; 737 in_bracket = brace_level = 0; 738 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 739 switch (pattern[i]) { 740 case '\\': 741 /* skip next character */ 742 if (pattern[i + 1] != '\0') 743 i++; 744 break; 745 case '[': 746 in_bracket = 1; 747 break; 748 case ']': 749 in_bracket = 0; 750 break; 751 case '{': 752 if (in_bracket) 753 break; 754 if (pattern[i + 1] == '}') { 755 /* Protect a single {}, for find(1), like csh */ 756 i++; /* skip */ 757 break; 758 } 759 if (*startp == -1) 760 *startp = i; 761 brace_level++; 762 break; 763 case '}': 764 if (in_bracket) 765 break; 766 if (*startp < 0) { 767 /* Unbalanced brace */ 768 return -1; 769 } 770 if (--brace_level <= 0) 771 *endp = i; 772 break; 773 } 774 } 775 /* unbalanced brackets/braces */ 776 if (*endp < 0 && (*startp >= 0 || in_bracket)) 777 return -1; 778 return 0; 779 } 780 781 /* 782 * Assembles and records a successfully-expanded pattern, returns -1 on 783 * alloc failure. 784 */ 785 static int 786 emit_expansion(const char *pattern, int brace_start, int brace_end, 787 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 788 { 789 char *cp; 790 int o = 0, tail_len = strlen(pattern + brace_end + 1); 791 792 if ((cp = malloc(brace_start + (sel_end - sel_start) + 793 tail_len + 1)) == NULL) 794 return -1; 795 796 /* Pattern before initial brace */ 797 if (brace_start > 0) { 798 memcpy(cp, pattern, brace_start); 799 o = brace_start; 800 } 801 /* Current braced selection */ 802 if (sel_end - sel_start > 0) { 803 memcpy(cp + o, pattern + sel_start, 804 sel_end - sel_start); 805 o += sel_end - sel_start; 806 } 807 /* Remainder of pattern after closing brace */ 808 if (tail_len > 0) { 809 memcpy(cp + o, pattern + brace_end + 1, tail_len); 810 o += tail_len; 811 } 812 cp[o] = '\0'; 813 if (append(cp, patternsp, npatternsp) != 0) { 814 free(cp); 815 return -1; 816 } 817 return 0; 818 } 819 820 /* 821 * Expand the first encountered brace in pattern, appending the expanded 822 * patterns it yielded to the *patternsp array. 823 * 824 * Returns 0 on success or -1 on allocation failure. 825 * 826 * Signals whether expansion was performed via *expanded and whether 827 * pattern was invalid via *invalid. 828 */ 829 static int 830 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 831 int *expanded, int *invalid) 832 { 833 int i; 834 int in_bracket, brace_start, brace_end, brace_level; 835 int sel_start, sel_end; 836 837 *invalid = *expanded = 0; 838 839 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 840 *invalid = 1; 841 return 0; 842 } else if (brace_start == -1) 843 return 0; 844 845 in_bracket = brace_level = 0; 846 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 847 switch (pattern[i]) { 848 case '{': 849 if (in_bracket) 850 break; 851 brace_level++; 852 break; 853 case '}': 854 if (in_bracket) 855 break; 856 brace_level--; 857 break; 858 case '[': 859 in_bracket = 1; 860 break; 861 case ']': 862 in_bracket = 0; 863 break; 864 case '\\': 865 if (i < brace_end - 1) 866 i++; /* skip */ 867 break; 868 } 869 if (pattern[i] == ',' || i == brace_end - 1) { 870 if (in_bracket || brace_level > 0) 871 continue; 872 /* End of a selection, emit an expanded pattern */ 873 874 /* Adjust end index for last selection */ 875 sel_end = (i == brace_end - 1) ? brace_end : i; 876 if (emit_expansion(pattern, brace_start, brace_end, 877 sel_start, sel_end, patternsp, npatternsp) != 0) 878 return -1; 879 /* move on to the next selection */ 880 sel_start = i + 1; 881 continue; 882 } 883 } 884 if (in_bracket || brace_level > 0) { 885 *invalid = 1; 886 return 0; 887 } 888 /* success */ 889 *expanded = 1; 890 return 0; 891 } 892 893 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 894 static int 895 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 896 { 897 char *cp, *cp2, **active = NULL, **done = NULL; 898 size_t i, nactive = 0, ndone = 0; 899 int ret = -1, invalid = 0, expanded = 0; 900 901 *patternsp = NULL; 902 *npatternsp = 0; 903 904 /* Start the worklist with the original pattern */ 905 if ((cp = strdup(pattern)) == NULL) 906 return -1; 907 if (append(cp, &active, &nactive) != 0) { 908 free(cp); 909 return -1; 910 } 911 while (nactive > 0) { 912 cp = active[nactive - 1]; 913 nactive--; 914 if (brace_expand_one(cp, &active, &nactive, 915 &expanded, &invalid) == -1) { 916 free(cp); 917 goto fail; 918 } 919 if (invalid) 920 fatal_f("invalid brace pattern \"%s\"", cp); 921 if (expanded) { 922 /* 923 * Current entry expanded to new entries on the 924 * active list; discard the progenitor pattern. 925 */ 926 free(cp); 927 continue; 928 } 929 /* 930 * Pattern did not expand; append the finename component to 931 * the completed list 932 */ 933 if ((cp2 = strrchr(cp, '/')) != NULL) 934 *cp2++ = '\0'; 935 else 936 cp2 = cp; 937 if (append(xstrdup(cp2), &done, &ndone) != 0) { 938 free(cp); 939 goto fail; 940 } 941 free(cp); 942 } 943 /* success */ 944 *patternsp = done; 945 *npatternsp = ndone; 946 done = NULL; 947 ndone = 0; 948 ret = 0; 949 fail: 950 for (i = 0; i < nactive; i++) 951 free(active[i]); 952 free(active); 953 for (i = 0; i < ndone; i++) 954 free(done[i]); 955 free(done); 956 return ret; 957 } 958 959 static struct sftp_conn * 960 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 961 int *reminp, int *remoutp, int *pidp) 962 { 963 if (sftp_direct == NULL) { 964 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 965 reminp, remoutp, pidp) < 0) 966 return NULL; 967 968 } else { 969 freeargs(&args); 970 addargs(&args, "sftp-server"); 971 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 972 reminp, remoutp, pidp) < 0) 973 return NULL; 974 } 975 return do_init(*reminp, *remoutp, 32768, 64, limit_kbps); 976 } 977 978 void 979 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 980 { 981 char *suser = NULL, *host = NULL, *src = NULL; 982 char *bp, *tuser, *thost, *targ; 983 int sport = -1, tport = -1; 984 struct sftp_conn *conn = NULL, *conn2 = NULL; 985 arglist alist; 986 int i, r, status; 987 u_int j; 988 989 memset(&alist, '\0', sizeof(alist)); 990 alist.list = NULL; 991 992 /* Parse target */ 993 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 994 if (r == -1) { 995 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 996 ++errs; 997 goto out; 998 } 999 if (r != 0) { 1000 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 1001 &targ) == -1) { 1002 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 1003 ++errs; 1004 goto out; 1005 } 1006 } 1007 1008 /* Parse source files */ 1009 for (i = 0; i < argc - 1; i++) { 1010 free(suser); 1011 free(host); 1012 free(src); 1013 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1014 if (r == -1) { 1015 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1016 ++errs; 1017 continue; 1018 } 1019 if (r != 0) { 1020 parse_user_host_path(argv[i], &suser, &host, &src); 1021 } 1022 if (suser != NULL && !okname(suser)) { 1023 ++errs; 1024 continue; 1025 } 1026 if (host && throughlocal) { /* extended remote to remote */ 1027 if (mode == MODE_SFTP) { 1028 if (remin == -1) { 1029 /* Connect to dest now */ 1030 conn = do_sftp_connect(thost, tuser, 1031 tport, sftp_direct, 1032 &remin, &remout, &do_cmd_pid); 1033 if (conn == NULL) { 1034 fatal("Unable to open " 1035 "destination connection"); 1036 } 1037 debug3_f("origin in %d out %d pid %ld", 1038 remin, remout, (long)do_cmd_pid); 1039 } 1040 /* 1041 * XXX remember suser/host/sport and only 1042 * reconnect if they change between arguments. 1043 * would save reconnections for cases like 1044 * scp -3 hosta:/foo hosta:/bar hostb: 1045 */ 1046 /* Connect to origin now */ 1047 conn2 = do_sftp_connect(host, suser, 1048 sport, sftp_direct, 1049 &remin2, &remout2, &do_cmd_pid2); 1050 if (conn2 == NULL) { 1051 fatal("Unable to open " 1052 "source connection"); 1053 } 1054 debug3_f("destination in %d out %d pid %ld", 1055 remin2, remout2, (long)do_cmd_pid2); 1056 throughlocal_sftp(conn2, conn, src, targ); 1057 (void) close(remin2); 1058 (void) close(remout2); 1059 remin2 = remout2 = -1; 1060 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1061 ++errs; 1062 else if (!WIFEXITED(status) || 1063 WEXITSTATUS(status) != 0) 1064 ++errs; 1065 do_cmd_pid2 = -1; 1066 continue; 1067 } else { 1068 xasprintf(&bp, "%s -f %s%s", cmd, 1069 *src == '-' ? "-- " : "", src); 1070 if (do_cmd(ssh_program, host, suser, sport, 0, 1071 bp, &remin, &remout, &do_cmd_pid) < 0) 1072 exit(1); 1073 free(bp); 1074 xasprintf(&bp, "%s -t %s%s", cmd, 1075 *targ == '-' ? "-- " : "", targ); 1076 if (do_cmd2(thost, tuser, tport, bp, 1077 remin, remout) < 0) 1078 exit(1); 1079 free(bp); 1080 (void) close(remin); 1081 (void) close(remout); 1082 remin = remout = -1; 1083 } 1084 } else if (host) { /* standard remote to remote */ 1085 /* 1086 * Second remote user is passed to first remote side 1087 * via scp command-line. Ensure it contains no obvious 1088 * shell characters. 1089 */ 1090 if (tuser != NULL && !okname(tuser)) { 1091 ++errs; 1092 continue; 1093 } 1094 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1095 /* This would require the remote support URIs */ 1096 fatal("target port not supported with two " 1097 "remote hosts and the -R option"); 1098 } 1099 1100 freeargs(&alist); 1101 addargs(&alist, "%s", ssh_program); 1102 addargs(&alist, "-x"); 1103 addargs(&alist, "-oClearAllForwardings=yes"); 1104 addargs(&alist, "-n"); 1105 for (j = 0; j < remote_remote_args.num; j++) { 1106 addargs(&alist, "%s", 1107 remote_remote_args.list[j]); 1108 } 1109 1110 if (sport != -1) { 1111 addargs(&alist, "-p"); 1112 addargs(&alist, "%d", sport); 1113 } 1114 if (suser) { 1115 addargs(&alist, "-l"); 1116 addargs(&alist, "%s", suser); 1117 } 1118 addargs(&alist, "--"); 1119 addargs(&alist, "%s", host); 1120 addargs(&alist, "%s", cmd); 1121 addargs(&alist, "%s", src); 1122 addargs(&alist, "%s%s%s:%s", 1123 tuser ? tuser : "", tuser ? "@" : "", 1124 thost, targ); 1125 if (do_local_cmd(&alist) != 0) 1126 errs = 1; 1127 } else { /* local to remote */ 1128 if (mode == MODE_SFTP) { 1129 if (remin == -1) { 1130 /* Connect to remote now */ 1131 conn = do_sftp_connect(thost, tuser, 1132 tport, sftp_direct, 1133 &remin, &remout, &do_cmd_pid); 1134 if (conn == NULL) { 1135 fatal("Unable to open sftp " 1136 "connection"); 1137 } 1138 } 1139 1140 /* The protocol */ 1141 source_sftp(1, argv[i], targ, conn); 1142 continue; 1143 } 1144 /* SCP */ 1145 if (remin == -1) { 1146 xasprintf(&bp, "%s -t %s%s", cmd, 1147 *targ == '-' ? "-- " : "", targ); 1148 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1149 bp, &remin, &remout, &do_cmd_pid) < 0) 1150 exit(1); 1151 if (response() < 0) 1152 exit(1); 1153 free(bp); 1154 } 1155 source(1, argv + i); 1156 } 1157 } 1158 out: 1159 if (mode == MODE_SFTP) 1160 free(conn); 1161 free(tuser); 1162 free(thost); 1163 free(targ); 1164 free(suser); 1165 free(host); 1166 free(src); 1167 } 1168 1169 void 1170 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1171 { 1172 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1173 arglist alist; 1174 struct sftp_conn *conn = NULL; 1175 int i, r, sport = -1; 1176 1177 memset(&alist, '\0', sizeof(alist)); 1178 alist.list = NULL; 1179 1180 for (i = 0; i < argc - 1; i++) { 1181 free(suser); 1182 free(host); 1183 free(src); 1184 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1185 if (r == -1) { 1186 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1187 ++errs; 1188 continue; 1189 } 1190 if (r != 0) 1191 parse_user_host_path(argv[i], &suser, &host, &src); 1192 if (suser != NULL && !okname(suser)) { 1193 ++errs; 1194 continue; 1195 } 1196 if (!host) { /* Local to local. */ 1197 freeargs(&alist); 1198 addargs(&alist, "%s", _PATH_CP); 1199 if (iamrecursive) 1200 addargs(&alist, "-r"); 1201 if (pflag) 1202 addargs(&alist, "-p"); 1203 addargs(&alist, "--"); 1204 addargs(&alist, "%s", argv[i]); 1205 addargs(&alist, "%s", argv[argc-1]); 1206 if (do_local_cmd(&alist)) 1207 ++errs; 1208 continue; 1209 } 1210 /* Remote to local. */ 1211 if (mode == MODE_SFTP) { 1212 conn = do_sftp_connect(host, suser, sport, 1213 sftp_direct, &remin, &remout, &do_cmd_pid); 1214 if (conn == NULL) { 1215 error("sftp connection failed"); 1216 ++errs; 1217 continue; 1218 } 1219 1220 /* The protocol */ 1221 sink_sftp(1, argv[argc - 1], src, conn); 1222 1223 free(conn); 1224 (void) close(remin); 1225 (void) close(remout); 1226 remin = remout = -1; 1227 continue; 1228 } 1229 /* SCP */ 1230 xasprintf(&bp, "%s -f %s%s", 1231 cmd, *src == '-' ? "-- " : "", src); 1232 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1233 &remin, &remout, &do_cmd_pid) < 0) { 1234 free(bp); 1235 ++errs; 1236 continue; 1237 } 1238 free(bp); 1239 sink(1, argv + argc - 1, src); 1240 (void) close(remin); 1241 remin = remout = -1; 1242 } 1243 free(suser); 1244 free(host); 1245 free(src); 1246 } 1247 1248 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1249 static char * 1250 prepare_remote_path(struct sftp_conn *conn, const char *path) 1251 { 1252 size_t nslash; 1253 1254 /* Handle ~ prefixed paths */ 1255 if (*path == '\0' || strcmp(path, "~") == 0) 1256 return xstrdup("."); 1257 if (*path != '~') 1258 return xstrdup(path); 1259 if (strncmp(path, "~/", 2) == 0) { 1260 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1261 return xstrdup("."); 1262 return xstrdup(path + 2 + nslash); 1263 } 1264 if (can_expand_path(conn)) 1265 return do_expand_path(conn, path); 1266 /* No protocol extension */ 1267 error("server expand-path extension is required " 1268 "for ~user paths in SFTP mode"); 1269 return NULL; 1270 } 1271 1272 void 1273 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1274 { 1275 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1276 int src_is_dir, target_is_dir; 1277 Attrib a; 1278 struct stat st; 1279 1280 memset(&a, '\0', sizeof(a)); 1281 if (stat(src, &st) != 0) 1282 fatal("stat local \"%s\": %s", src, strerror(errno)); 1283 src_is_dir = S_ISDIR(st.st_mode); 1284 if ((filename = basename(src)) == NULL) 1285 fatal("basename \"%s\": %s", src, strerror(errno)); 1286 1287 /* 1288 * No need to glob here - the local shell already took care of 1289 * the expansions 1290 */ 1291 if ((target = prepare_remote_path(conn, targ)) == NULL) 1292 cleanup_exit(255); 1293 target_is_dir = remote_is_dir(conn, target); 1294 if (targetshouldbedirectory && !target_is_dir) { 1295 debug("target directory \"%s\" does not exist", target); 1296 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1297 a.perm = st.st_mode | 0700; /* ensure writable */ 1298 if (do_mkdir(conn, target, &a, 1) != 0) 1299 cleanup_exit(255); /* error already logged */ 1300 target_is_dir = 1; 1301 } 1302 if (target_is_dir) 1303 abs_dst = path_append(target, filename); 1304 else { 1305 abs_dst = target; 1306 target = NULL; 1307 } 1308 debug3_f("copying local %s to remote %s", src, abs_dst); 1309 1310 if (src_is_dir && iamrecursive) { 1311 if (upload_dir(conn, src, abs_dst, pflag, 1312 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1313 error("failed to upload directory %s to %s", src, targ); 1314 errs = 1; 1315 } 1316 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1317 error("failed to upload file %s to %s", src, targ); 1318 errs = 1; 1319 } 1320 1321 free(abs_dst); 1322 free(target); 1323 } 1324 1325 void 1326 source(int argc, char **argv) 1327 { 1328 struct stat stb; 1329 static BUF buffer; 1330 BUF *bp; 1331 off_t i, statbytes; 1332 size_t amt, nr; 1333 int fd = -1, haderr, indx; 1334 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1335 int len; 1336 1337 for (indx = 0; indx < argc; ++indx) { 1338 name = argv[indx]; 1339 statbytes = 0; 1340 len = strlen(name); 1341 while (len > 1 && name[len-1] == '/') 1342 name[--len] = '\0'; 1343 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1344 goto syserr; 1345 if (strchr(name, '\n') != NULL) { 1346 strnvis(encname, name, sizeof(encname), VIS_NL); 1347 name = encname; 1348 } 1349 if (fstat(fd, &stb) == -1) { 1350 syserr: run_err("%s: %s", name, strerror(errno)); 1351 goto next; 1352 } 1353 if (stb.st_size < 0) { 1354 run_err("%s: %s", name, "Negative file size"); 1355 goto next; 1356 } 1357 unset_nonblock(fd); 1358 switch (stb.st_mode & S_IFMT) { 1359 case S_IFREG: 1360 break; 1361 case S_IFDIR: 1362 if (iamrecursive) { 1363 rsource(name, &stb); 1364 goto next; 1365 } 1366 /* FALLTHROUGH */ 1367 default: 1368 run_err("%s: not a regular file", name); 1369 goto next; 1370 } 1371 if ((last = strrchr(name, '/')) == NULL) 1372 last = name; 1373 else 1374 ++last; 1375 curfile = last; 1376 if (pflag) { 1377 if (do_times(remout, verbose_mode, &stb) < 0) 1378 goto next; 1379 } 1380 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1381 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1382 (u_int) (stb.st_mode & FILEMODEMASK), 1383 (long long)stb.st_size, last); 1384 if (verbose_mode) 1385 fmprintf(stderr, "Sending file modes: %s", buf); 1386 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1387 if (response() < 0) 1388 goto next; 1389 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1390 next: if (fd != -1) { 1391 (void) close(fd); 1392 fd = -1; 1393 } 1394 continue; 1395 } 1396 if (showprogress) 1397 start_progress_meter(curfile, stb.st_size, &statbytes); 1398 set_nonblock(remout); 1399 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1400 amt = bp->cnt; 1401 if (i + (off_t)amt > stb.st_size) 1402 amt = stb.st_size - i; 1403 if (!haderr) { 1404 if ((nr = atomicio(read, fd, 1405 bp->buf, amt)) != amt) { 1406 haderr = errno; 1407 memset(bp->buf + nr, 0, amt - nr); 1408 } 1409 } 1410 /* Keep writing after error to retain sync */ 1411 if (haderr) { 1412 (void)atomicio(vwrite, remout, bp->buf, amt); 1413 memset(bp->buf, 0, amt); 1414 continue; 1415 } 1416 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1417 &statbytes) != amt) 1418 haderr = errno; 1419 } 1420 unset_nonblock(remout); 1421 1422 if (fd != -1) { 1423 if (close(fd) == -1 && !haderr) 1424 haderr = errno; 1425 fd = -1; 1426 } 1427 if (!haderr) 1428 (void) atomicio(vwrite, remout, "", 1); 1429 else 1430 run_err("%s: %s", name, strerror(haderr)); 1431 (void) response(); 1432 if (showprogress) 1433 stop_progress_meter(); 1434 } 1435 } 1436 1437 void 1438 rsource(char *name, struct stat *statp) 1439 { 1440 DIR *dirp; 1441 struct dirent *dp; 1442 char *last, *vect[1], path[PATH_MAX]; 1443 1444 if (!(dirp = opendir(name))) { 1445 run_err("%s: %s", name, strerror(errno)); 1446 return; 1447 } 1448 last = strrchr(name, '/'); 1449 if (last == NULL) 1450 last = name; 1451 else 1452 last++; 1453 if (pflag) { 1454 if (do_times(remout, verbose_mode, statp) < 0) { 1455 closedir(dirp); 1456 return; 1457 } 1458 } 1459 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1460 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1461 if (verbose_mode) 1462 fmprintf(stderr, "Entering directory: %s", path); 1463 (void) atomicio(vwrite, remout, path, strlen(path)); 1464 if (response() < 0) { 1465 closedir(dirp); 1466 return; 1467 } 1468 while ((dp = readdir(dirp)) != NULL) { 1469 if (dp->d_ino == 0) 1470 continue; 1471 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1472 continue; 1473 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1474 run_err("%s/%s: name too long", name, dp->d_name); 1475 continue; 1476 } 1477 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1478 vect[0] = path; 1479 source(1, vect); 1480 } 1481 (void) closedir(dirp); 1482 (void) atomicio(vwrite, remout, "E\n", 2); 1483 (void) response(); 1484 } 1485 1486 void 1487 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1488 { 1489 char *abs_src = NULL; 1490 char *abs_dst = NULL; 1491 glob_t g; 1492 char *filename, *tmp = NULL; 1493 int i, r, err = 0, dst_is_dir; 1494 struct stat st; 1495 1496 memset(&g, 0, sizeof(g)); 1497 1498 /* 1499 * Here, we need remote glob as SFTP can not depend on remote shell 1500 * expansions 1501 */ 1502 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1503 err = -1; 1504 goto out; 1505 } 1506 1507 debug3_f("copying remote %s to local %s", abs_src, dst); 1508 if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) { 1509 if (r == GLOB_NOSPACE) 1510 error("%s: too many glob matches", src); 1511 else 1512 error("%s: %s", src, strerror(ENOENT)); 1513 err = -1; 1514 goto out; 1515 } 1516 1517 if ((r = stat(dst, &st)) != 0) 1518 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1519 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1520 1521 if (g.gl_matchc > 1 && !dst_is_dir) { 1522 if (r == 0) { 1523 error("Multiple files match pattern, but destination " 1524 "\"%s\" is not a directory", dst); 1525 err = -1; 1526 goto out; 1527 } 1528 debug2_f("creating destination \"%s\"", dst); 1529 if (mkdir(dst, 0777) != 0) { 1530 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1531 err = -1; 1532 goto out; 1533 } 1534 dst_is_dir = 1; 1535 } 1536 1537 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1538 tmp = xstrdup(g.gl_pathv[i]); 1539 if ((filename = basename(tmp)) == NULL) { 1540 error("basename %s: %s", tmp, strerror(errno)); 1541 err = -1; 1542 goto out; 1543 } 1544 1545 if (dst_is_dir) 1546 abs_dst = path_append(dst, filename); 1547 else 1548 abs_dst = xstrdup(dst); 1549 1550 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1551 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1552 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1553 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1554 err = -1; 1555 } else { 1556 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1557 pflag, 0, 0, 1) == -1) 1558 err = -1; 1559 } 1560 free(abs_dst); 1561 abs_dst = NULL; 1562 free(tmp); 1563 tmp = NULL; 1564 } 1565 1566 out: 1567 free(abs_src); 1568 free(tmp); 1569 globfree(&g); 1570 if (err == -1) 1571 errs = 1; 1572 } 1573 1574 1575 #define TYPE_OVERFLOW(type, val) \ 1576 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1577 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1578 (sizeof(type) != 4 && sizeof(type) != 8)) 1579 1580 void 1581 sink(int argc, char **argv, const char *src) 1582 { 1583 static BUF buffer; 1584 struct stat stb; 1585 BUF *bp; 1586 off_t i; 1587 size_t j, count; 1588 int amt, exists, first, ofd; 1589 mode_t mode, omode, mask; 1590 off_t size, statbytes; 1591 unsigned long long ull; 1592 int setimes, targisdir, wrerr; 1593 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1594 char **patterns = NULL; 1595 size_t n, npatterns = 0; 1596 struct timeval tv[2]; 1597 1598 #define atime tv[0] 1599 #define mtime tv[1] 1600 #define SCREWUP(str) { why = str; goto screwup; } 1601 1602 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1603 SCREWUP("Unexpected off_t/time_t size"); 1604 1605 setimes = targisdir = 0; 1606 mask = umask(0); 1607 if (!pflag) 1608 (void) umask(mask); 1609 if (argc != 1) { 1610 run_err("ambiguous target"); 1611 exit(1); 1612 } 1613 targ = *argv; 1614 if (targetshouldbedirectory) 1615 verifydir(targ); 1616 1617 (void) atomicio(vwrite, remout, "", 1); 1618 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1619 targisdir = 1; 1620 if (src != NULL && !iamrecursive && !Tflag) { 1621 /* 1622 * Prepare to try to restrict incoming filenames to match 1623 * the requested destination file glob. 1624 */ 1625 if (brace_expand(src, &patterns, &npatterns) != 0) 1626 fatal_f("could not expand pattern"); 1627 } 1628 for (first = 1;; first = 0) { 1629 cp = buf; 1630 if (atomicio(read, remin, cp, 1) != 1) 1631 goto done; 1632 if (*cp++ == '\n') 1633 SCREWUP("unexpected <newline>"); 1634 do { 1635 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1636 SCREWUP("lost connection"); 1637 *cp++ = ch; 1638 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1639 *cp = 0; 1640 if (verbose_mode) 1641 fmprintf(stderr, "Sink: %s", buf); 1642 1643 if (buf[0] == '\01' || buf[0] == '\02') { 1644 if (iamremote == 0) { 1645 (void) snmprintf(visbuf, sizeof(visbuf), 1646 NULL, "%s", buf + 1); 1647 (void) atomicio(vwrite, STDERR_FILENO, 1648 visbuf, strlen(visbuf)); 1649 } 1650 if (buf[0] == '\02') 1651 exit(1); 1652 ++errs; 1653 continue; 1654 } 1655 if (buf[0] == 'E') { 1656 (void) atomicio(vwrite, remout, "", 1); 1657 goto done; 1658 } 1659 if (ch == '\n') 1660 *--cp = 0; 1661 1662 cp = buf; 1663 if (*cp == 'T') { 1664 setimes++; 1665 cp++; 1666 if (!isdigit((unsigned char)*cp)) 1667 SCREWUP("mtime.sec not present"); 1668 ull = strtoull(cp, &cp, 10); 1669 if (!cp || *cp++ != ' ') 1670 SCREWUP("mtime.sec not delimited"); 1671 if (TYPE_OVERFLOW(time_t, ull)) 1672 setimes = 0; /* out of range */ 1673 mtime.tv_sec = ull; 1674 mtime.tv_usec = strtol(cp, &cp, 10); 1675 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1676 mtime.tv_usec > 999999) 1677 SCREWUP("mtime.usec not delimited"); 1678 if (!isdigit((unsigned char)*cp)) 1679 SCREWUP("atime.sec not present"); 1680 ull = strtoull(cp, &cp, 10); 1681 if (!cp || *cp++ != ' ') 1682 SCREWUP("atime.sec not delimited"); 1683 if (TYPE_OVERFLOW(time_t, ull)) 1684 setimes = 0; /* out of range */ 1685 atime.tv_sec = ull; 1686 atime.tv_usec = strtol(cp, &cp, 10); 1687 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1688 atime.tv_usec > 999999) 1689 SCREWUP("atime.usec not delimited"); 1690 (void) atomicio(vwrite, remout, "", 1); 1691 continue; 1692 } 1693 if (*cp != 'C' && *cp != 'D') { 1694 /* 1695 * Check for the case "rcp remote:foo\* local:bar". 1696 * In this case, the line "No match." can be returned 1697 * by the shell before the rcp command on the remote is 1698 * executed so the ^Aerror_message convention isn't 1699 * followed. 1700 */ 1701 if (first) { 1702 run_err("%s", cp); 1703 exit(1); 1704 } 1705 SCREWUP("expected control record"); 1706 } 1707 mode = 0; 1708 for (++cp; cp < buf + 5; cp++) { 1709 if (*cp < '0' || *cp > '7') 1710 SCREWUP("bad mode"); 1711 mode = (mode << 3) | (*cp - '0'); 1712 } 1713 if (!pflag) 1714 mode &= ~mask; 1715 if (*cp++ != ' ') 1716 SCREWUP("mode not delimited"); 1717 1718 if (!isdigit((unsigned char)*cp)) 1719 SCREWUP("size not present"); 1720 ull = strtoull(cp, &cp, 10); 1721 if (!cp || *cp++ != ' ') 1722 SCREWUP("size not delimited"); 1723 if (TYPE_OVERFLOW(off_t, ull)) 1724 SCREWUP("size out of range"); 1725 size = (off_t)ull; 1726 1727 if (*cp == '\0' || strchr(cp, '/') != NULL || 1728 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1729 run_err("error: unexpected filename: %s", cp); 1730 exit(1); 1731 } 1732 if (npatterns > 0) { 1733 for (n = 0; n < npatterns; n++) { 1734 if (fnmatch(patterns[n], cp, 0) == 0) 1735 break; 1736 } 1737 if (n >= npatterns) 1738 SCREWUP("filename does not match request"); 1739 } 1740 if (targisdir) { 1741 static char *namebuf; 1742 static size_t cursize; 1743 size_t need; 1744 1745 need = strlen(targ) + strlen(cp) + 250; 1746 if (need > cursize) { 1747 free(namebuf); 1748 namebuf = xmalloc(need); 1749 cursize = need; 1750 } 1751 (void) snprintf(namebuf, need, "%s%s%s", targ, 1752 strcmp(targ, "/") ? "/" : "", cp); 1753 np = namebuf; 1754 } else 1755 np = targ; 1756 curfile = cp; 1757 exists = stat(np, &stb) == 0; 1758 if (buf[0] == 'D') { 1759 int mod_flag = pflag; 1760 if (!iamrecursive) 1761 SCREWUP("received directory without -r"); 1762 if (exists) { 1763 if (!S_ISDIR(stb.st_mode)) { 1764 errno = ENOTDIR; 1765 goto bad; 1766 } 1767 if (pflag) 1768 (void) chmod(np, mode); 1769 } else { 1770 /* Handle copying from a read-only directory */ 1771 mod_flag = 1; 1772 if (mkdir(np, mode | S_IRWXU) == -1) 1773 goto bad; 1774 } 1775 vect[0] = xstrdup(np); 1776 sink(1, vect, src); 1777 if (setimes) { 1778 setimes = 0; 1779 (void) utimes(vect[0], tv); 1780 } 1781 if (mod_flag) 1782 (void) chmod(vect[0], mode); 1783 free(vect[0]); 1784 continue; 1785 } 1786 omode = mode; 1787 mode |= S_IWUSR; 1788 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1789 bad: run_err("%s: %s", np, strerror(errno)); 1790 continue; 1791 } 1792 (void) atomicio(vwrite, remout, "", 1); 1793 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1794 (void) close(ofd); 1795 continue; 1796 } 1797 cp = bp->buf; 1798 wrerr = 0; 1799 1800 /* 1801 * NB. do not use run_err() unless immediately followed by 1802 * exit() below as it may send a spurious reply that might 1803 * desyncronise us from the peer. Use note_err() instead. 1804 */ 1805 statbytes = 0; 1806 if (showprogress) 1807 start_progress_meter(curfile, size, &statbytes); 1808 set_nonblock(remin); 1809 for (count = i = 0; i < size; i += bp->cnt) { 1810 amt = bp->cnt; 1811 if (i + amt > size) 1812 amt = size - i; 1813 count += amt; 1814 do { 1815 j = atomicio6(read, remin, cp, amt, 1816 scpio, &statbytes); 1817 if (j == 0) { 1818 run_err("%s", j != EPIPE ? 1819 strerror(errno) : 1820 "dropped connection"); 1821 exit(1); 1822 } 1823 amt -= j; 1824 cp += j; 1825 } while (amt > 0); 1826 1827 if (count == bp->cnt) { 1828 /* Keep reading so we stay sync'd up. */ 1829 if (!wrerr) { 1830 if (atomicio(vwrite, ofd, bp->buf, 1831 count) != count) { 1832 note_err("%s: %s", np, 1833 strerror(errno)); 1834 wrerr = 1; 1835 } 1836 } 1837 count = 0; 1838 cp = bp->buf; 1839 } 1840 } 1841 unset_nonblock(remin); 1842 if (count != 0 && !wrerr && 1843 atomicio(vwrite, ofd, bp->buf, count) != count) { 1844 note_err("%s: %s", np, strerror(errno)); 1845 wrerr = 1; 1846 } 1847 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1848 ftruncate(ofd, size) != 0) 1849 note_err("%s: truncate: %s", np, strerror(errno)); 1850 if (pflag) { 1851 if (exists || omode != mode) 1852 #ifdef HAVE_FCHMOD 1853 if (fchmod(ofd, omode)) { 1854 #else /* HAVE_FCHMOD */ 1855 if (chmod(np, omode)) { 1856 #endif /* HAVE_FCHMOD */ 1857 note_err("%s: set mode: %s", 1858 np, strerror(errno)); 1859 } 1860 } else { 1861 if (!exists && omode != mode) 1862 #ifdef HAVE_FCHMOD 1863 if (fchmod(ofd, omode & ~mask)) { 1864 #else /* HAVE_FCHMOD */ 1865 if (chmod(np, omode & ~mask)) { 1866 #endif /* HAVE_FCHMOD */ 1867 note_err("%s: set mode: %s", 1868 np, strerror(errno)); 1869 } 1870 } 1871 if (close(ofd) == -1) 1872 note_err("%s: close: %s", np, strerror(errno)); 1873 (void) response(); 1874 if (showprogress) 1875 stop_progress_meter(); 1876 if (setimes && !wrerr) { 1877 setimes = 0; 1878 if (utimes(np, tv) == -1) { 1879 note_err("%s: set times: %s", 1880 np, strerror(errno)); 1881 } 1882 } 1883 /* If no error was noted then signal success for this file */ 1884 if (note_err(NULL) == 0) 1885 (void) atomicio(vwrite, remout, "", 1); 1886 } 1887 done: 1888 for (n = 0; n < npatterns; n++) 1889 free(patterns[n]); 1890 free(patterns); 1891 return; 1892 screwup: 1893 for (n = 0; n < npatterns; n++) 1894 free(patterns[n]); 1895 free(patterns); 1896 run_err("protocol error: %s", why); 1897 exit(1); 1898 } 1899 1900 void 1901 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1902 char *src, char *targ) 1903 { 1904 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1905 char *abs_src = NULL, *tmp = NULL; 1906 glob_t g; 1907 int i, r, targetisdir, err = 0; 1908 1909 if ((filename = basename(src)) == NULL) 1910 fatal("basename %s: %s", src, strerror(errno)); 1911 1912 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1913 (target = prepare_remote_path(to, targ)) == NULL) 1914 cleanup_exit(255); 1915 memset(&g, 0, sizeof(g)); 1916 1917 targetisdir = remote_is_dir(to, target); 1918 if (!targetisdir && targetshouldbedirectory) { 1919 error("%s: destination is not a directory", targ); 1920 err = -1; 1921 goto out; 1922 } 1923 1924 debug3_f("copying remote %s to remote %s", abs_src, target); 1925 if ((r = remote_glob(from, abs_src, GLOB_MARK, NULL, &g)) != 0) { 1926 if (r == GLOB_NOSPACE) 1927 error("%s: too many glob matches", src); 1928 else 1929 error("%s: %s", src, strerror(ENOENT)); 1930 err = -1; 1931 goto out; 1932 } 1933 1934 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1935 tmp = xstrdup(g.gl_pathv[i]); 1936 if ((filename = basename(tmp)) == NULL) { 1937 error("basename %s: %s", tmp, strerror(errno)); 1938 err = -1; 1939 goto out; 1940 } 1941 1942 if (targetisdir) 1943 abs_dst = path_append(target, filename); 1944 else 1945 abs_dst = xstrdup(target); 1946 1947 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1948 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1949 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 1950 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 1951 err = -1; 1952 } else { 1953 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 1954 pflag) == -1) 1955 err = -1; 1956 } 1957 free(abs_dst); 1958 abs_dst = NULL; 1959 free(tmp); 1960 tmp = NULL; 1961 } 1962 1963 out: 1964 free(abs_src); 1965 free(abs_dst); 1966 free(target); 1967 free(tmp); 1968 globfree(&g); 1969 if (err == -1) 1970 errs = 1; 1971 } 1972 1973 int 1974 response(void) 1975 { 1976 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 1977 1978 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 1979 lostconn(0); 1980 1981 cp = rbuf; 1982 switch (resp) { 1983 case 0: /* ok */ 1984 return (0); 1985 default: 1986 *cp++ = resp; 1987 /* FALLTHROUGH */ 1988 case 1: /* error, followed by error msg */ 1989 case 2: /* fatal error, "" */ 1990 do { 1991 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1992 lostconn(0); 1993 *cp++ = ch; 1994 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 1995 1996 if (!iamremote) { 1997 cp[-1] = '\0'; 1998 (void) snmprintf(visbuf, sizeof(visbuf), 1999 NULL, "%s\n", rbuf); 2000 (void) atomicio(vwrite, STDERR_FILENO, 2001 visbuf, strlen(visbuf)); 2002 } 2003 ++errs; 2004 if (resp == 1) 2005 return (-1); 2006 exit(1); 2007 } 2008 /* NOTREACHED */ 2009 } 2010 2011 void 2012 usage(void) 2013 { 2014 (void) fprintf(stderr, 2015 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2016 " [-i identity_file] [-J destination] [-l limit]\n" 2017 " [-o ssh_option] [-P port] [-S program] source ... target\n"); 2018 exit(1); 2019 } 2020 2021 void 2022 run_err(const char *fmt,...) 2023 { 2024 static FILE *fp; 2025 va_list ap; 2026 2027 ++errs; 2028 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2029 (void) fprintf(fp, "%c", 0x01); 2030 (void) fprintf(fp, "scp: "); 2031 va_start(ap, fmt); 2032 (void) vfprintf(fp, fmt, ap); 2033 va_end(ap); 2034 (void) fprintf(fp, "\n"); 2035 (void) fflush(fp); 2036 } 2037 2038 if (!iamremote) { 2039 va_start(ap, fmt); 2040 vfmprintf(stderr, fmt, ap); 2041 va_end(ap); 2042 fprintf(stderr, "\n"); 2043 } 2044 } 2045 2046 /* 2047 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2048 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2049 * any active error at the end of the transfer. 2050 */ 2051 int 2052 note_err(const char *fmt, ...) 2053 { 2054 static char *emsg; 2055 va_list ap; 2056 2057 /* Replay any previously-noted error */ 2058 if (fmt == NULL) { 2059 if (emsg == NULL) 2060 return 0; 2061 run_err("%s", emsg); 2062 free(emsg); 2063 emsg = NULL; 2064 return -1; 2065 } 2066 2067 errs++; 2068 /* Prefer first-noted error */ 2069 if (emsg != NULL) 2070 return -1; 2071 2072 va_start(ap, fmt); 2073 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2074 va_end(ap); 2075 return -1; 2076 } 2077 2078 void 2079 verifydir(char *cp) 2080 { 2081 struct stat stb; 2082 2083 if (!stat(cp, &stb)) { 2084 if (S_ISDIR(stb.st_mode)) 2085 return; 2086 errno = ENOTDIR; 2087 } 2088 run_err("%s: %s", cp, strerror(errno)); 2089 killchild(0); 2090 } 2091 2092 int 2093 okname(char *cp0) 2094 { 2095 int c; 2096 char *cp; 2097 2098 cp = cp0; 2099 do { 2100 c = (int)*cp; 2101 if (c & 0200) 2102 goto bad; 2103 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2104 switch (c) { 2105 case '\'': 2106 case '"': 2107 case '`': 2108 case ' ': 2109 case '#': 2110 goto bad; 2111 default: 2112 break; 2113 } 2114 } 2115 } while (*++cp); 2116 return (1); 2117 2118 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2119 return (0); 2120 } 2121 2122 BUF * 2123 allocbuf(BUF *bp, int fd, int blksize) 2124 { 2125 size_t size; 2126 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE 2127 struct stat stb; 2128 2129 if (fstat(fd, &stb) == -1) { 2130 run_err("fstat: %s", strerror(errno)); 2131 return (0); 2132 } 2133 size = ROUNDUP(stb.st_blksize, blksize); 2134 if (size == 0) 2135 size = blksize; 2136 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2137 size = blksize; 2138 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2139 if (bp->cnt >= size) 2140 return (bp); 2141 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2142 bp->cnt = size; 2143 return (bp); 2144 } 2145 2146 void 2147 lostconn(int signo) 2148 { 2149 if (!iamremote) 2150 (void)write(STDERR_FILENO, "lost connection\n", 16); 2151 if (signo) 2152 _exit(1); 2153 else 2154 exit(1); 2155 } 2156 2157 void 2158 cleanup_exit(int i) 2159 { 2160 if (remin > 0) 2161 close(remin); 2162 if (remout > 0) 2163 close(remout); 2164 if (remin2 > 0) 2165 close(remin2); 2166 if (remout2 > 0) 2167 close(remout2); 2168 if (do_cmd_pid > 0) 2169 waitpid(do_cmd_pid, NULL, 0); 2170 if (do_cmd_pid2 > 0) 2171 waitpid(do_cmd_pid2, NULL, 0); 2172 exit(i); 2173 } 2174