1 /* $OpenBSD: scp.c,v 1.247 2022/03/20 08:52:17 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 seed_rng(); 459 460 msetlocale(); 461 462 /* Copy argv, because we modify it */ 463 argv0 = argv[0]; 464 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 465 for (n = 0; n < argc; n++) 466 newargv[n] = xstrdup(argv[n]); 467 argv = newargv; 468 469 __progname = ssh_get_progname(argv[0]); 470 471 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 472 473 memset(&args, '\0', sizeof(args)); 474 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 475 args.list = remote_remote_args.list = NULL; 476 addargs(&args, "%s", ssh_program); 477 addargs(&args, "-x"); 478 addargs(&args, "-oPermitLocalCommand=no"); 479 addargs(&args, "-oClearAllForwardings=yes"); 480 addargs(&args, "-oRemoteCommand=none"); 481 addargs(&args, "-oRequestTTY=no"); 482 483 fflag = Tflag = tflag = 0; 484 while ((ch = getopt(argc, argv, 485 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:")) != -1) { 486 switch (ch) { 487 /* User-visible flags. */ 488 case '1': 489 fatal("SSH protocol v.1 is no longer supported"); 490 break; 491 case '2': 492 /* Ignored */ 493 break; 494 case 'A': 495 case '4': 496 case '6': 497 case 'C': 498 addargs(&args, "-%c", ch); 499 addargs(&remote_remote_args, "-%c", ch); 500 break; 501 case 'D': 502 sftp_direct = optarg; 503 break; 504 case '3': 505 throughlocal = 1; 506 break; 507 case 'R': 508 throughlocal = 0; 509 break; 510 case 'o': 511 case 'c': 512 case 'i': 513 case 'F': 514 case 'J': 515 addargs(&remote_remote_args, "-%c", ch); 516 addargs(&remote_remote_args, "%s", optarg); 517 addargs(&args, "-%c", ch); 518 addargs(&args, "%s", optarg); 519 break; 520 case 'O': 521 mode = MODE_SCP; 522 break; 523 case 's': 524 mode = MODE_SFTP; 525 break; 526 case 'P': 527 sshport = a2port(optarg); 528 if (sshport <= 0) 529 fatal("bad port \"%s\"\n", optarg); 530 break; 531 case 'B': 532 addargs(&remote_remote_args, "-oBatchmode=yes"); 533 addargs(&args, "-oBatchmode=yes"); 534 break; 535 case 'l': 536 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 537 &errstr); 538 if (errstr != NULL) 539 usage(); 540 limit_kbps *= 1024; /* kbps */ 541 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 542 break; 543 case 'p': 544 pflag = 1; 545 break; 546 case 'r': 547 iamrecursive = 1; 548 break; 549 case 'S': 550 ssh_program = xstrdup(optarg); 551 break; 552 case 'v': 553 addargs(&args, "-v"); 554 addargs(&remote_remote_args, "-v"); 555 if (verbose_mode == 0) 556 log_level = SYSLOG_LEVEL_DEBUG1; 557 else if (log_level < SYSLOG_LEVEL_DEBUG3) 558 log_level++; 559 verbose_mode = 1; 560 break; 561 case 'q': 562 addargs(&args, "-q"); 563 addargs(&remote_remote_args, "-q"); 564 showprogress = 0; 565 break; 566 567 /* Server options. */ 568 case 'd': 569 targetshouldbedirectory = 1; 570 break; 571 case 'f': /* "from" */ 572 iamremote = 1; 573 fflag = 1; 574 break; 575 case 't': /* "to" */ 576 iamremote = 1; 577 tflag = 1; 578 #ifdef HAVE_CYGWIN 579 setmode(0, O_BINARY); 580 #endif 581 break; 582 case 'T': 583 Tflag = 1; 584 break; 585 default: 586 usage(); 587 } 588 } 589 argc -= optind; 590 argv += optind; 591 592 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 593 594 /* Do this last because we want the user to be able to override it */ 595 addargs(&args, "-oForwardAgent=no"); 596 597 if (iamremote) 598 mode = MODE_SCP; 599 600 if ((pwd = getpwuid(userid = getuid())) == NULL) 601 fatal("unknown user %u", (u_int) userid); 602 603 if (!isatty(STDOUT_FILENO)) 604 showprogress = 0; 605 606 if (pflag) { 607 /* Cannot pledge: -p allows setuid/setgid files... */ 608 } else { 609 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 610 NULL) == -1) { 611 perror("pledge"); 612 exit(1); 613 } 614 } 615 616 remin = STDIN_FILENO; 617 remout = STDOUT_FILENO; 618 619 if (fflag) { 620 /* Follow "protocol", send data. */ 621 (void) response(); 622 source(argc, argv); 623 exit(errs != 0); 624 } 625 if (tflag) { 626 /* Receive data. */ 627 sink(argc, argv, NULL); 628 exit(errs != 0); 629 } 630 if (argc < 2) 631 usage(); 632 if (argc > 2) 633 targetshouldbedirectory = 1; 634 635 remin = remout = -1; 636 do_cmd_pid = -1; 637 /* Command to be executed on remote system using "ssh". */ 638 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 639 verbose_mode ? " -v" : "", 640 iamrecursive ? " -r" : "", pflag ? " -p" : "", 641 targetshouldbedirectory ? " -d" : ""); 642 643 (void) ssh_signal(SIGPIPE, lostconn); 644 645 if (colon(argv[argc - 1])) /* Dest is remote host. */ 646 toremote(argc, argv, mode, sftp_direct); 647 else { 648 if (targetshouldbedirectory) 649 verifydir(argv[argc - 1]); 650 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 651 } 652 /* 653 * Finally check the exit status of the ssh process, if one was forked 654 * and no error has occurred yet 655 */ 656 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 657 if (remin != -1) 658 (void) close(remin); 659 if (remout != -1) 660 (void) close(remout); 661 if (waitpid(do_cmd_pid, &status, 0) == -1) 662 errs = 1; 663 else { 664 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 665 errs = 1; 666 } 667 } 668 exit(errs != 0); 669 } 670 671 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 672 static int 673 scpio(void *_cnt, size_t s) 674 { 675 off_t *cnt = (off_t *)_cnt; 676 677 *cnt += s; 678 refresh_progress_meter(0); 679 if (limit_kbps > 0) 680 bandwidth_limit(&bwlimit, s); 681 return 0; 682 } 683 684 static int 685 do_times(int fd, int verb, const struct stat *sb) 686 { 687 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 688 char buf[(20 + 7 + 2) * 2 + 2]; 689 690 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 691 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 692 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 693 if (verb) { 694 fprintf(stderr, "File mtime %lld atime %lld\n", 695 (long long)sb->st_mtime, (long long)sb->st_atime); 696 fprintf(stderr, "Sending file timestamps: %s", buf); 697 } 698 (void) atomicio(vwrite, fd, buf, strlen(buf)); 699 return (response()); 700 } 701 702 static int 703 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 704 char **pathp) 705 { 706 int r; 707 708 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 709 if (r == 0 && *pathp == NULL) 710 *pathp = xstrdup("."); 711 return r; 712 } 713 714 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 715 static int 716 append(char *cp, char ***ap, size_t *np) 717 { 718 char **tmp; 719 720 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 721 return -1; 722 tmp[(*np)] = cp; 723 (*np)++; 724 *ap = tmp; 725 return 0; 726 } 727 728 /* 729 * Finds the start and end of the first brace pair in the pattern. 730 * returns 0 on success or -1 for invalid patterns. 731 */ 732 static int 733 find_brace(const char *pattern, int *startp, int *endp) 734 { 735 int i; 736 int in_bracket, brace_level; 737 738 *startp = *endp = -1; 739 in_bracket = brace_level = 0; 740 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 741 switch (pattern[i]) { 742 case '\\': 743 /* skip next character */ 744 if (pattern[i + 1] != '\0') 745 i++; 746 break; 747 case '[': 748 in_bracket = 1; 749 break; 750 case ']': 751 in_bracket = 0; 752 break; 753 case '{': 754 if (in_bracket) 755 break; 756 if (pattern[i + 1] == '}') { 757 /* Protect a single {}, for find(1), like csh */ 758 i++; /* skip */ 759 break; 760 } 761 if (*startp == -1) 762 *startp = i; 763 brace_level++; 764 break; 765 case '}': 766 if (in_bracket) 767 break; 768 if (*startp < 0) { 769 /* Unbalanced brace */ 770 return -1; 771 } 772 if (--brace_level <= 0) 773 *endp = i; 774 break; 775 } 776 } 777 /* unbalanced brackets/braces */ 778 if (*endp < 0 && (*startp >= 0 || in_bracket)) 779 return -1; 780 return 0; 781 } 782 783 /* 784 * Assembles and records a successfully-expanded pattern, returns -1 on 785 * alloc failure. 786 */ 787 static int 788 emit_expansion(const char *pattern, int brace_start, int brace_end, 789 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 790 { 791 char *cp; 792 int o = 0, tail_len = strlen(pattern + brace_end + 1); 793 794 if ((cp = malloc(brace_start + (sel_end - sel_start) + 795 tail_len + 1)) == NULL) 796 return -1; 797 798 /* Pattern before initial brace */ 799 if (brace_start > 0) { 800 memcpy(cp, pattern, brace_start); 801 o = brace_start; 802 } 803 /* Current braced selection */ 804 if (sel_end - sel_start > 0) { 805 memcpy(cp + o, pattern + sel_start, 806 sel_end - sel_start); 807 o += sel_end - sel_start; 808 } 809 /* Remainder of pattern after closing brace */ 810 if (tail_len > 0) { 811 memcpy(cp + o, pattern + brace_end + 1, tail_len); 812 o += tail_len; 813 } 814 cp[o] = '\0'; 815 if (append(cp, patternsp, npatternsp) != 0) { 816 free(cp); 817 return -1; 818 } 819 return 0; 820 } 821 822 /* 823 * Expand the first encountered brace in pattern, appending the expanded 824 * patterns it yielded to the *patternsp array. 825 * 826 * Returns 0 on success or -1 on allocation failure. 827 * 828 * Signals whether expansion was performed via *expanded and whether 829 * pattern was invalid via *invalid. 830 */ 831 static int 832 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 833 int *expanded, int *invalid) 834 { 835 int i; 836 int in_bracket, brace_start, brace_end, brace_level; 837 int sel_start, sel_end; 838 839 *invalid = *expanded = 0; 840 841 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 842 *invalid = 1; 843 return 0; 844 } else if (brace_start == -1) 845 return 0; 846 847 in_bracket = brace_level = 0; 848 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 849 switch (pattern[i]) { 850 case '{': 851 if (in_bracket) 852 break; 853 brace_level++; 854 break; 855 case '}': 856 if (in_bracket) 857 break; 858 brace_level--; 859 break; 860 case '[': 861 in_bracket = 1; 862 break; 863 case ']': 864 in_bracket = 0; 865 break; 866 case '\\': 867 if (i < brace_end - 1) 868 i++; /* skip */ 869 break; 870 } 871 if (pattern[i] == ',' || i == brace_end - 1) { 872 if (in_bracket || brace_level > 0) 873 continue; 874 /* End of a selection, emit an expanded pattern */ 875 876 /* Adjust end index for last selection */ 877 sel_end = (i == brace_end - 1) ? brace_end : i; 878 if (emit_expansion(pattern, brace_start, brace_end, 879 sel_start, sel_end, patternsp, npatternsp) != 0) 880 return -1; 881 /* move on to the next selection */ 882 sel_start = i + 1; 883 continue; 884 } 885 } 886 if (in_bracket || brace_level > 0) { 887 *invalid = 1; 888 return 0; 889 } 890 /* success */ 891 *expanded = 1; 892 return 0; 893 } 894 895 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 896 static int 897 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 898 { 899 char *cp, *cp2, **active = NULL, **done = NULL; 900 size_t i, nactive = 0, ndone = 0; 901 int ret = -1, invalid = 0, expanded = 0; 902 903 *patternsp = NULL; 904 *npatternsp = 0; 905 906 /* Start the worklist with the original pattern */ 907 if ((cp = strdup(pattern)) == NULL) 908 return -1; 909 if (append(cp, &active, &nactive) != 0) { 910 free(cp); 911 return -1; 912 } 913 while (nactive > 0) { 914 cp = active[nactive - 1]; 915 nactive--; 916 if (brace_expand_one(cp, &active, &nactive, 917 &expanded, &invalid) == -1) { 918 free(cp); 919 goto fail; 920 } 921 if (invalid) 922 fatal_f("invalid brace pattern \"%s\"", cp); 923 if (expanded) { 924 /* 925 * Current entry expanded to new entries on the 926 * active list; discard the progenitor pattern. 927 */ 928 free(cp); 929 continue; 930 } 931 /* 932 * Pattern did not expand; append the finename component to 933 * the completed list 934 */ 935 if ((cp2 = strrchr(cp, '/')) != NULL) 936 *cp2++ = '\0'; 937 else 938 cp2 = cp; 939 if (append(xstrdup(cp2), &done, &ndone) != 0) { 940 free(cp); 941 goto fail; 942 } 943 free(cp); 944 } 945 /* success */ 946 *patternsp = done; 947 *npatternsp = ndone; 948 done = NULL; 949 ndone = 0; 950 ret = 0; 951 fail: 952 for (i = 0; i < nactive; i++) 953 free(active[i]); 954 free(active); 955 for (i = 0; i < ndone; i++) 956 free(done[i]); 957 free(done); 958 return ret; 959 } 960 961 static struct sftp_conn * 962 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 963 int *reminp, int *remoutp, int *pidp) 964 { 965 if (sftp_direct == NULL) { 966 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 967 reminp, remoutp, pidp) < 0) 968 return NULL; 969 970 } else { 971 freeargs(&args); 972 addargs(&args, "sftp-server"); 973 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 974 reminp, remoutp, pidp) < 0) 975 return NULL; 976 } 977 return do_init(*reminp, *remoutp, 32768, 64, limit_kbps); 978 } 979 980 void 981 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 982 { 983 char *suser = NULL, *host = NULL, *src = NULL; 984 char *bp, *tuser, *thost, *targ; 985 int sport = -1, tport = -1; 986 struct sftp_conn *conn = NULL, *conn2 = NULL; 987 arglist alist; 988 int i, r, status; 989 u_int j; 990 991 memset(&alist, '\0', sizeof(alist)); 992 alist.list = NULL; 993 994 /* Parse target */ 995 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 996 if (r == -1) { 997 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 998 ++errs; 999 goto out; 1000 } 1001 if (r != 0) { 1002 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 1003 &targ) == -1) { 1004 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 1005 ++errs; 1006 goto out; 1007 } 1008 } 1009 1010 /* Parse source files */ 1011 for (i = 0; i < argc - 1; i++) { 1012 free(suser); 1013 free(host); 1014 free(src); 1015 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1016 if (r == -1) { 1017 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1018 ++errs; 1019 continue; 1020 } 1021 if (r != 0) { 1022 parse_user_host_path(argv[i], &suser, &host, &src); 1023 } 1024 if (suser != NULL && !okname(suser)) { 1025 ++errs; 1026 continue; 1027 } 1028 if (host && throughlocal) { /* extended remote to remote */ 1029 if (mode == MODE_SFTP) { 1030 if (remin == -1) { 1031 /* Connect to dest now */ 1032 conn = do_sftp_connect(thost, tuser, 1033 tport, sftp_direct, 1034 &remin, &remout, &do_cmd_pid); 1035 if (conn == NULL) { 1036 fatal("Unable to open " 1037 "destination connection"); 1038 } 1039 debug3_f("origin in %d out %d pid %ld", 1040 remin, remout, (long)do_cmd_pid); 1041 } 1042 /* 1043 * XXX remember suser/host/sport and only 1044 * reconnect if they change between arguments. 1045 * would save reconnections for cases like 1046 * scp -3 hosta:/foo hosta:/bar hostb: 1047 */ 1048 /* Connect to origin now */ 1049 conn2 = do_sftp_connect(host, suser, 1050 sport, sftp_direct, 1051 &remin2, &remout2, &do_cmd_pid2); 1052 if (conn2 == NULL) { 1053 fatal("Unable to open " 1054 "source connection"); 1055 } 1056 debug3_f("destination in %d out %d pid %ld", 1057 remin2, remout2, (long)do_cmd_pid2); 1058 throughlocal_sftp(conn2, conn, src, targ); 1059 (void) close(remin2); 1060 (void) close(remout2); 1061 remin2 = remout2 = -1; 1062 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1063 ++errs; 1064 else if (!WIFEXITED(status) || 1065 WEXITSTATUS(status) != 0) 1066 ++errs; 1067 do_cmd_pid2 = -1; 1068 continue; 1069 } else { 1070 xasprintf(&bp, "%s -f %s%s", cmd, 1071 *src == '-' ? "-- " : "", src); 1072 if (do_cmd(ssh_program, host, suser, sport, 0, 1073 bp, &remin, &remout, &do_cmd_pid) < 0) 1074 exit(1); 1075 free(bp); 1076 xasprintf(&bp, "%s -t %s%s", cmd, 1077 *targ == '-' ? "-- " : "", targ); 1078 if (do_cmd2(thost, tuser, tport, bp, 1079 remin, remout) < 0) 1080 exit(1); 1081 free(bp); 1082 (void) close(remin); 1083 (void) close(remout); 1084 remin = remout = -1; 1085 } 1086 } else if (host) { /* standard remote to remote */ 1087 /* 1088 * Second remote user is passed to first remote side 1089 * via scp command-line. Ensure it contains no obvious 1090 * shell characters. 1091 */ 1092 if (tuser != NULL && !okname(tuser)) { 1093 ++errs; 1094 continue; 1095 } 1096 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1097 /* This would require the remote support URIs */ 1098 fatal("target port not supported with two " 1099 "remote hosts and the -R option"); 1100 } 1101 1102 freeargs(&alist); 1103 addargs(&alist, "%s", ssh_program); 1104 addargs(&alist, "-x"); 1105 addargs(&alist, "-oClearAllForwardings=yes"); 1106 addargs(&alist, "-n"); 1107 for (j = 0; j < remote_remote_args.num; j++) { 1108 addargs(&alist, "%s", 1109 remote_remote_args.list[j]); 1110 } 1111 1112 if (sport != -1) { 1113 addargs(&alist, "-p"); 1114 addargs(&alist, "%d", sport); 1115 } 1116 if (suser) { 1117 addargs(&alist, "-l"); 1118 addargs(&alist, "%s", suser); 1119 } 1120 addargs(&alist, "--"); 1121 addargs(&alist, "%s", host); 1122 addargs(&alist, "%s", cmd); 1123 addargs(&alist, "%s", src); 1124 addargs(&alist, "%s%s%s:%s", 1125 tuser ? tuser : "", tuser ? "@" : "", 1126 thost, targ); 1127 if (do_local_cmd(&alist) != 0) 1128 errs = 1; 1129 } else { /* local to remote */ 1130 if (mode == MODE_SFTP) { 1131 if (remin == -1) { 1132 /* Connect to remote now */ 1133 conn = do_sftp_connect(thost, tuser, 1134 tport, sftp_direct, 1135 &remin, &remout, &do_cmd_pid); 1136 if (conn == NULL) { 1137 fatal("Unable to open sftp " 1138 "connection"); 1139 } 1140 } 1141 1142 /* The protocol */ 1143 source_sftp(1, argv[i], targ, conn); 1144 continue; 1145 } 1146 /* SCP */ 1147 if (remin == -1) { 1148 xasprintf(&bp, "%s -t %s%s", cmd, 1149 *targ == '-' ? "-- " : "", targ); 1150 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1151 bp, &remin, &remout, &do_cmd_pid) < 0) 1152 exit(1); 1153 if (response() < 0) 1154 exit(1); 1155 free(bp); 1156 } 1157 source(1, argv + i); 1158 } 1159 } 1160 out: 1161 if (mode == MODE_SFTP) 1162 free(conn); 1163 free(tuser); 1164 free(thost); 1165 free(targ); 1166 free(suser); 1167 free(host); 1168 free(src); 1169 } 1170 1171 void 1172 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1173 { 1174 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1175 arglist alist; 1176 struct sftp_conn *conn = NULL; 1177 int i, r, sport = -1; 1178 1179 memset(&alist, '\0', sizeof(alist)); 1180 alist.list = NULL; 1181 1182 for (i = 0; i < argc - 1; i++) { 1183 free(suser); 1184 free(host); 1185 free(src); 1186 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1187 if (r == -1) { 1188 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1189 ++errs; 1190 continue; 1191 } 1192 if (r != 0) 1193 parse_user_host_path(argv[i], &suser, &host, &src); 1194 if (suser != NULL && !okname(suser)) { 1195 ++errs; 1196 continue; 1197 } 1198 if (!host) { /* Local to local. */ 1199 freeargs(&alist); 1200 addargs(&alist, "%s", _PATH_CP); 1201 if (iamrecursive) 1202 addargs(&alist, "-r"); 1203 if (pflag) 1204 addargs(&alist, "-p"); 1205 addargs(&alist, "--"); 1206 addargs(&alist, "%s", argv[i]); 1207 addargs(&alist, "%s", argv[argc-1]); 1208 if (do_local_cmd(&alist)) 1209 ++errs; 1210 continue; 1211 } 1212 /* Remote to local. */ 1213 if (mode == MODE_SFTP) { 1214 conn = do_sftp_connect(host, suser, sport, 1215 sftp_direct, &remin, &remout, &do_cmd_pid); 1216 if (conn == NULL) { 1217 error("sftp connection failed"); 1218 ++errs; 1219 continue; 1220 } 1221 1222 /* The protocol */ 1223 sink_sftp(1, argv[argc - 1], src, conn); 1224 1225 free(conn); 1226 (void) close(remin); 1227 (void) close(remout); 1228 remin = remout = -1; 1229 continue; 1230 } 1231 /* SCP */ 1232 xasprintf(&bp, "%s -f %s%s", 1233 cmd, *src == '-' ? "-- " : "", src); 1234 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1235 &remin, &remout, &do_cmd_pid) < 0) { 1236 free(bp); 1237 ++errs; 1238 continue; 1239 } 1240 free(bp); 1241 sink(1, argv + argc - 1, src); 1242 (void) close(remin); 1243 remin = remout = -1; 1244 } 1245 free(suser); 1246 free(host); 1247 free(src); 1248 } 1249 1250 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1251 static char * 1252 prepare_remote_path(struct sftp_conn *conn, const char *path) 1253 { 1254 size_t nslash; 1255 1256 /* Handle ~ prefixed paths */ 1257 if (*path == '\0' || strcmp(path, "~") == 0) 1258 return xstrdup("."); 1259 if (*path != '~') 1260 return xstrdup(path); 1261 if (strncmp(path, "~/", 2) == 0) { 1262 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1263 return xstrdup("."); 1264 return xstrdup(path + 2 + nslash); 1265 } 1266 if (can_expand_path(conn)) 1267 return do_expand_path(conn, path); 1268 /* No protocol extension */ 1269 error("server expand-path extension is required " 1270 "for ~user paths in SFTP mode"); 1271 return NULL; 1272 } 1273 1274 void 1275 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1276 { 1277 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1278 int src_is_dir, target_is_dir; 1279 Attrib a; 1280 struct stat st; 1281 1282 memset(&a, '\0', sizeof(a)); 1283 if (stat(src, &st) != 0) 1284 fatal("stat local \"%s\": %s", src, strerror(errno)); 1285 src_is_dir = S_ISDIR(st.st_mode); 1286 if ((filename = basename(src)) == NULL) 1287 fatal("basename \"%s\": %s", src, strerror(errno)); 1288 1289 /* 1290 * No need to glob here - the local shell already took care of 1291 * the expansions 1292 */ 1293 if ((target = prepare_remote_path(conn, targ)) == NULL) 1294 cleanup_exit(255); 1295 target_is_dir = remote_is_dir(conn, target); 1296 if (targetshouldbedirectory && !target_is_dir) { 1297 debug("target directory \"%s\" does not exist", target); 1298 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1299 a.perm = st.st_mode | 0700; /* ensure writable */ 1300 if (do_mkdir(conn, target, &a, 1) != 0) 1301 cleanup_exit(255); /* error already logged */ 1302 target_is_dir = 1; 1303 } 1304 if (target_is_dir) 1305 abs_dst = path_append(target, filename); 1306 else { 1307 abs_dst = target; 1308 target = NULL; 1309 } 1310 debug3_f("copying local %s to remote %s", src, abs_dst); 1311 1312 if (src_is_dir && iamrecursive) { 1313 if (upload_dir(conn, src, abs_dst, pflag, 1314 SFTP_PROGRESS_ONLY, 0, 0, 1) != 0) { 1315 error("failed to upload directory %s to %s", src, targ); 1316 errs = 1; 1317 } 1318 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0) != 0) { 1319 error("failed to upload file %s to %s", src, targ); 1320 errs = 1; 1321 } 1322 1323 free(abs_dst); 1324 free(target); 1325 } 1326 1327 void 1328 source(int argc, char **argv) 1329 { 1330 struct stat stb; 1331 static BUF buffer; 1332 BUF *bp; 1333 off_t i, statbytes; 1334 size_t amt, nr; 1335 int fd = -1, haderr, indx; 1336 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1337 int len; 1338 1339 for (indx = 0; indx < argc; ++indx) { 1340 name = argv[indx]; 1341 statbytes = 0; 1342 len = strlen(name); 1343 while (len > 1 && name[len-1] == '/') 1344 name[--len] = '\0'; 1345 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1346 goto syserr; 1347 if (strchr(name, '\n') != NULL) { 1348 strnvis(encname, name, sizeof(encname), VIS_NL); 1349 name = encname; 1350 } 1351 if (fstat(fd, &stb) == -1) { 1352 syserr: run_err("%s: %s", name, strerror(errno)); 1353 goto next; 1354 } 1355 if (stb.st_size < 0) { 1356 run_err("%s: %s", name, "Negative file size"); 1357 goto next; 1358 } 1359 unset_nonblock(fd); 1360 switch (stb.st_mode & S_IFMT) { 1361 case S_IFREG: 1362 break; 1363 case S_IFDIR: 1364 if (iamrecursive) { 1365 rsource(name, &stb); 1366 goto next; 1367 } 1368 /* FALLTHROUGH */ 1369 default: 1370 run_err("%s: not a regular file", name); 1371 goto next; 1372 } 1373 if ((last = strrchr(name, '/')) == NULL) 1374 last = name; 1375 else 1376 ++last; 1377 curfile = last; 1378 if (pflag) { 1379 if (do_times(remout, verbose_mode, &stb) < 0) 1380 goto next; 1381 } 1382 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1383 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1384 (u_int) (stb.st_mode & FILEMODEMASK), 1385 (long long)stb.st_size, last); 1386 if (verbose_mode) 1387 fmprintf(stderr, "Sending file modes: %s", buf); 1388 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1389 if (response() < 0) 1390 goto next; 1391 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1392 next: if (fd != -1) { 1393 (void) close(fd); 1394 fd = -1; 1395 } 1396 continue; 1397 } 1398 if (showprogress) 1399 start_progress_meter(curfile, stb.st_size, &statbytes); 1400 set_nonblock(remout); 1401 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1402 amt = bp->cnt; 1403 if (i + (off_t)amt > stb.st_size) 1404 amt = stb.st_size - i; 1405 if (!haderr) { 1406 if ((nr = atomicio(read, fd, 1407 bp->buf, amt)) != amt) { 1408 haderr = errno; 1409 memset(bp->buf + nr, 0, amt - nr); 1410 } 1411 } 1412 /* Keep writing after error to retain sync */ 1413 if (haderr) { 1414 (void)atomicio(vwrite, remout, bp->buf, amt); 1415 memset(bp->buf, 0, amt); 1416 continue; 1417 } 1418 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1419 &statbytes) != amt) 1420 haderr = errno; 1421 } 1422 unset_nonblock(remout); 1423 1424 if (fd != -1) { 1425 if (close(fd) == -1 && !haderr) 1426 haderr = errno; 1427 fd = -1; 1428 } 1429 if (!haderr) 1430 (void) atomicio(vwrite, remout, "", 1); 1431 else 1432 run_err("%s: %s", name, strerror(haderr)); 1433 (void) response(); 1434 if (showprogress) 1435 stop_progress_meter(); 1436 } 1437 } 1438 1439 void 1440 rsource(char *name, struct stat *statp) 1441 { 1442 DIR *dirp; 1443 struct dirent *dp; 1444 char *last, *vect[1], path[PATH_MAX]; 1445 1446 if (!(dirp = opendir(name))) { 1447 run_err("%s: %s", name, strerror(errno)); 1448 return; 1449 } 1450 last = strrchr(name, '/'); 1451 if (last == NULL) 1452 last = name; 1453 else 1454 last++; 1455 if (pflag) { 1456 if (do_times(remout, verbose_mode, statp) < 0) { 1457 closedir(dirp); 1458 return; 1459 } 1460 } 1461 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1462 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1463 if (verbose_mode) 1464 fmprintf(stderr, "Entering directory: %s", path); 1465 (void) atomicio(vwrite, remout, path, strlen(path)); 1466 if (response() < 0) { 1467 closedir(dirp); 1468 return; 1469 } 1470 while ((dp = readdir(dirp)) != NULL) { 1471 if (dp->d_ino == 0) 1472 continue; 1473 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1474 continue; 1475 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1476 run_err("%s/%s: name too long", name, dp->d_name); 1477 continue; 1478 } 1479 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1480 vect[0] = path; 1481 source(1, vect); 1482 } 1483 (void) closedir(dirp); 1484 (void) atomicio(vwrite, remout, "E\n", 2); 1485 (void) response(); 1486 } 1487 1488 void 1489 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1490 { 1491 char *abs_src = NULL; 1492 char *abs_dst = NULL; 1493 glob_t g; 1494 char *filename, *tmp = NULL; 1495 int i, r, err = 0, dst_is_dir; 1496 struct stat st; 1497 1498 memset(&g, 0, sizeof(g)); 1499 1500 /* 1501 * Here, we need remote glob as SFTP can not depend on remote shell 1502 * expansions 1503 */ 1504 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1505 err = -1; 1506 goto out; 1507 } 1508 1509 debug3_f("copying remote %s to local %s", abs_src, dst); 1510 if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) { 1511 if (r == GLOB_NOSPACE) 1512 error("%s: too many glob matches", src); 1513 else 1514 error("%s: %s", src, strerror(ENOENT)); 1515 err = -1; 1516 goto out; 1517 } 1518 1519 if ((r = stat(dst, &st)) != 0) 1520 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1521 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1522 1523 if (g.gl_matchc > 1 && !dst_is_dir) { 1524 if (r == 0) { 1525 error("Multiple files match pattern, but destination " 1526 "\"%s\" is not a directory", dst); 1527 err = -1; 1528 goto out; 1529 } 1530 debug2_f("creating destination \"%s\"", dst); 1531 if (mkdir(dst, 0777) != 0) { 1532 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1533 err = -1; 1534 goto out; 1535 } 1536 dst_is_dir = 1; 1537 } 1538 1539 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1540 tmp = xstrdup(g.gl_pathv[i]); 1541 if ((filename = basename(tmp)) == NULL) { 1542 error("basename %s: %s", tmp, strerror(errno)); 1543 err = -1; 1544 goto out; 1545 } 1546 1547 if (dst_is_dir) 1548 abs_dst = path_append(dst, filename); 1549 else 1550 abs_dst = xstrdup(dst); 1551 1552 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1553 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1554 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1555 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1) == -1) 1556 err = -1; 1557 } else { 1558 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1559 pflag, 0, 0) == -1) 1560 err = -1; 1561 } 1562 free(abs_dst); 1563 abs_dst = NULL; 1564 free(tmp); 1565 tmp = NULL; 1566 } 1567 1568 out: 1569 free(abs_src); 1570 free(tmp); 1571 globfree(&g); 1572 if (err == -1) 1573 errs = 1; 1574 } 1575 1576 1577 #define TYPE_OVERFLOW(type, val) \ 1578 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1579 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1580 (sizeof(type) != 4 && sizeof(type) != 8)) 1581 1582 void 1583 sink(int argc, char **argv, const char *src) 1584 { 1585 static BUF buffer; 1586 struct stat stb; 1587 BUF *bp; 1588 off_t i; 1589 size_t j, count; 1590 int amt, exists, first, ofd; 1591 mode_t mode, omode, mask; 1592 off_t size, statbytes; 1593 unsigned long long ull; 1594 int setimes, targisdir, wrerr; 1595 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1596 char **patterns = NULL; 1597 size_t n, npatterns = 0; 1598 struct timeval tv[2]; 1599 1600 #define atime tv[0] 1601 #define mtime tv[1] 1602 #define SCREWUP(str) { why = str; goto screwup; } 1603 1604 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1605 SCREWUP("Unexpected off_t/time_t size"); 1606 1607 setimes = targisdir = 0; 1608 mask = umask(0); 1609 if (!pflag) 1610 (void) umask(mask); 1611 if (argc != 1) { 1612 run_err("ambiguous target"); 1613 exit(1); 1614 } 1615 targ = *argv; 1616 if (targetshouldbedirectory) 1617 verifydir(targ); 1618 1619 (void) atomicio(vwrite, remout, "", 1); 1620 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1621 targisdir = 1; 1622 if (src != NULL && !iamrecursive && !Tflag) { 1623 /* 1624 * Prepare to try to restrict incoming filenames to match 1625 * the requested destination file glob. 1626 */ 1627 if (brace_expand(src, &patterns, &npatterns) != 0) 1628 fatal_f("could not expand pattern"); 1629 } 1630 for (first = 1;; first = 0) { 1631 cp = buf; 1632 if (atomicio(read, remin, cp, 1) != 1) 1633 goto done; 1634 if (*cp++ == '\n') 1635 SCREWUP("unexpected <newline>"); 1636 do { 1637 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1638 SCREWUP("lost connection"); 1639 *cp++ = ch; 1640 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1641 *cp = 0; 1642 if (verbose_mode) 1643 fmprintf(stderr, "Sink: %s", buf); 1644 1645 if (buf[0] == '\01' || buf[0] == '\02') { 1646 if (iamremote == 0) { 1647 (void) snmprintf(visbuf, sizeof(visbuf), 1648 NULL, "%s", buf + 1); 1649 (void) atomicio(vwrite, STDERR_FILENO, 1650 visbuf, strlen(visbuf)); 1651 } 1652 if (buf[0] == '\02') 1653 exit(1); 1654 ++errs; 1655 continue; 1656 } 1657 if (buf[0] == 'E') { 1658 (void) atomicio(vwrite, remout, "", 1); 1659 goto done; 1660 } 1661 if (ch == '\n') 1662 *--cp = 0; 1663 1664 cp = buf; 1665 if (*cp == 'T') { 1666 setimes++; 1667 cp++; 1668 if (!isdigit((unsigned char)*cp)) 1669 SCREWUP("mtime.sec not present"); 1670 ull = strtoull(cp, &cp, 10); 1671 if (!cp || *cp++ != ' ') 1672 SCREWUP("mtime.sec not delimited"); 1673 if (TYPE_OVERFLOW(time_t, ull)) 1674 setimes = 0; /* out of range */ 1675 mtime.tv_sec = ull; 1676 mtime.tv_usec = strtol(cp, &cp, 10); 1677 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1678 mtime.tv_usec > 999999) 1679 SCREWUP("mtime.usec not delimited"); 1680 if (!isdigit((unsigned char)*cp)) 1681 SCREWUP("atime.sec not present"); 1682 ull = strtoull(cp, &cp, 10); 1683 if (!cp || *cp++ != ' ') 1684 SCREWUP("atime.sec not delimited"); 1685 if (TYPE_OVERFLOW(time_t, ull)) 1686 setimes = 0; /* out of range */ 1687 atime.tv_sec = ull; 1688 atime.tv_usec = strtol(cp, &cp, 10); 1689 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1690 atime.tv_usec > 999999) 1691 SCREWUP("atime.usec not delimited"); 1692 (void) atomicio(vwrite, remout, "", 1); 1693 continue; 1694 } 1695 if (*cp != 'C' && *cp != 'D') { 1696 /* 1697 * Check for the case "rcp remote:foo\* local:bar". 1698 * In this case, the line "No match." can be returned 1699 * by the shell before the rcp command on the remote is 1700 * executed so the ^Aerror_message convention isn't 1701 * followed. 1702 */ 1703 if (first) { 1704 run_err("%s", cp); 1705 exit(1); 1706 } 1707 SCREWUP("expected control record"); 1708 } 1709 mode = 0; 1710 for (++cp; cp < buf + 5; cp++) { 1711 if (*cp < '0' || *cp > '7') 1712 SCREWUP("bad mode"); 1713 mode = (mode << 3) | (*cp - '0'); 1714 } 1715 if (!pflag) 1716 mode &= ~mask; 1717 if (*cp++ != ' ') 1718 SCREWUP("mode not delimited"); 1719 1720 if (!isdigit((unsigned char)*cp)) 1721 SCREWUP("size not present"); 1722 ull = strtoull(cp, &cp, 10); 1723 if (!cp || *cp++ != ' ') 1724 SCREWUP("size not delimited"); 1725 if (TYPE_OVERFLOW(off_t, ull)) 1726 SCREWUP("size out of range"); 1727 size = (off_t)ull; 1728 1729 if (*cp == '\0' || strchr(cp, '/') != NULL || 1730 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1731 run_err("error: unexpected filename: %s", cp); 1732 exit(1); 1733 } 1734 if (npatterns > 0) { 1735 for (n = 0; n < npatterns; n++) { 1736 if (fnmatch(patterns[n], cp, 0) == 0) 1737 break; 1738 } 1739 if (n >= npatterns) 1740 SCREWUP("filename does not match request"); 1741 } 1742 if (targisdir) { 1743 static char *namebuf; 1744 static size_t cursize; 1745 size_t need; 1746 1747 need = strlen(targ) + strlen(cp) + 250; 1748 if (need > cursize) { 1749 free(namebuf); 1750 namebuf = xmalloc(need); 1751 cursize = need; 1752 } 1753 (void) snprintf(namebuf, need, "%s%s%s", targ, 1754 strcmp(targ, "/") ? "/" : "", cp); 1755 np = namebuf; 1756 } else 1757 np = targ; 1758 curfile = cp; 1759 exists = stat(np, &stb) == 0; 1760 if (buf[0] == 'D') { 1761 int mod_flag = pflag; 1762 if (!iamrecursive) 1763 SCREWUP("received directory without -r"); 1764 if (exists) { 1765 if (!S_ISDIR(stb.st_mode)) { 1766 errno = ENOTDIR; 1767 goto bad; 1768 } 1769 if (pflag) 1770 (void) chmod(np, mode); 1771 } else { 1772 /* Handle copying from a read-only directory */ 1773 mod_flag = 1; 1774 if (mkdir(np, mode | S_IRWXU) == -1) 1775 goto bad; 1776 } 1777 vect[0] = xstrdup(np); 1778 sink(1, vect, src); 1779 if (setimes) { 1780 setimes = 0; 1781 (void) utimes(vect[0], tv); 1782 } 1783 if (mod_flag) 1784 (void) chmod(vect[0], mode); 1785 free(vect[0]); 1786 continue; 1787 } 1788 omode = mode; 1789 mode |= S_IWUSR; 1790 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1791 bad: run_err("%s: %s", np, strerror(errno)); 1792 continue; 1793 } 1794 (void) atomicio(vwrite, remout, "", 1); 1795 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1796 (void) close(ofd); 1797 continue; 1798 } 1799 cp = bp->buf; 1800 wrerr = 0; 1801 1802 /* 1803 * NB. do not use run_err() unless immediately followed by 1804 * exit() below as it may send a spurious reply that might 1805 * desyncronise us from the peer. Use note_err() instead. 1806 */ 1807 statbytes = 0; 1808 if (showprogress) 1809 start_progress_meter(curfile, size, &statbytes); 1810 set_nonblock(remin); 1811 for (count = i = 0; i < size; i += bp->cnt) { 1812 amt = bp->cnt; 1813 if (i + amt > size) 1814 amt = size - i; 1815 count += amt; 1816 do { 1817 j = atomicio6(read, remin, cp, amt, 1818 scpio, &statbytes); 1819 if (j == 0) { 1820 run_err("%s", j != EPIPE ? 1821 strerror(errno) : 1822 "dropped connection"); 1823 exit(1); 1824 } 1825 amt -= j; 1826 cp += j; 1827 } while (amt > 0); 1828 1829 if (count == bp->cnt) { 1830 /* Keep reading so we stay sync'd up. */ 1831 if (!wrerr) { 1832 if (atomicio(vwrite, ofd, bp->buf, 1833 count) != count) { 1834 note_err("%s: %s", np, 1835 strerror(errno)); 1836 wrerr = 1; 1837 } 1838 } 1839 count = 0; 1840 cp = bp->buf; 1841 } 1842 } 1843 unset_nonblock(remin); 1844 if (count != 0 && !wrerr && 1845 atomicio(vwrite, ofd, bp->buf, count) != count) { 1846 note_err("%s: %s", np, strerror(errno)); 1847 wrerr = 1; 1848 } 1849 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1850 ftruncate(ofd, size) != 0) 1851 note_err("%s: truncate: %s", np, strerror(errno)); 1852 if (pflag) { 1853 if (exists || omode != mode) 1854 #ifdef HAVE_FCHMOD 1855 if (fchmod(ofd, omode)) { 1856 #else /* HAVE_FCHMOD */ 1857 if (chmod(np, omode)) { 1858 #endif /* HAVE_FCHMOD */ 1859 note_err("%s: set mode: %s", 1860 np, strerror(errno)); 1861 } 1862 } else { 1863 if (!exists && omode != mode) 1864 #ifdef HAVE_FCHMOD 1865 if (fchmod(ofd, omode & ~mask)) { 1866 #else /* HAVE_FCHMOD */ 1867 if (chmod(np, omode & ~mask)) { 1868 #endif /* HAVE_FCHMOD */ 1869 note_err("%s: set mode: %s", 1870 np, strerror(errno)); 1871 } 1872 } 1873 if (close(ofd) == -1) 1874 note_err("%s: close: %s", np, strerror(errno)); 1875 (void) response(); 1876 if (showprogress) 1877 stop_progress_meter(); 1878 if (setimes && !wrerr) { 1879 setimes = 0; 1880 if (utimes(np, tv) == -1) { 1881 note_err("%s: set times: %s", 1882 np, strerror(errno)); 1883 } 1884 } 1885 /* If no error was noted then signal success for this file */ 1886 if (note_err(NULL) == 0) 1887 (void) atomicio(vwrite, remout, "", 1); 1888 } 1889 done: 1890 for (n = 0; n < npatterns; n++) 1891 free(patterns[n]); 1892 free(patterns); 1893 return; 1894 screwup: 1895 for (n = 0; n < npatterns; n++) 1896 free(patterns[n]); 1897 free(patterns); 1898 run_err("protocol error: %s", why); 1899 exit(1); 1900 } 1901 1902 void 1903 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1904 char *src, char *targ) 1905 { 1906 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1907 char *abs_src = NULL, *tmp = NULL; 1908 glob_t g; 1909 int i, r, targetisdir, err = 0; 1910 1911 if ((filename = basename(src)) == NULL) 1912 fatal("basename %s: %s", src, strerror(errno)); 1913 1914 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1915 (target = prepare_remote_path(to, targ)) == NULL) 1916 cleanup_exit(255); 1917 memset(&g, 0, sizeof(g)); 1918 1919 targetisdir = remote_is_dir(to, target); 1920 if (!targetisdir && targetshouldbedirectory) { 1921 error("%s: destination is not a directory", targ); 1922 err = -1; 1923 goto out; 1924 } 1925 1926 debug3_f("copying remote %s to remote %s", abs_src, target); 1927 if ((r = remote_glob(from, abs_src, GLOB_MARK, NULL, &g)) != 0) { 1928 if (r == GLOB_NOSPACE) 1929 error("%s: too many glob matches", src); 1930 else 1931 error("%s: %s", src, strerror(ENOENT)); 1932 err = -1; 1933 goto out; 1934 } 1935 1936 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1937 tmp = xstrdup(g.gl_pathv[i]); 1938 if ((filename = basename(tmp)) == NULL) { 1939 error("basename %s: %s", tmp, strerror(errno)); 1940 err = -1; 1941 goto out; 1942 } 1943 1944 if (targetisdir) 1945 abs_dst = path_append(target, filename); 1946 else 1947 abs_dst = xstrdup(target); 1948 1949 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1950 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1951 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 1952 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 1953 err = -1; 1954 } else { 1955 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 1956 pflag) == -1) 1957 err = -1; 1958 } 1959 free(abs_dst); 1960 abs_dst = NULL; 1961 free(tmp); 1962 tmp = NULL; 1963 } 1964 1965 out: 1966 free(abs_src); 1967 free(abs_dst); 1968 free(target); 1969 free(tmp); 1970 globfree(&g); 1971 if (err == -1) 1972 errs = 1; 1973 } 1974 1975 int 1976 response(void) 1977 { 1978 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 1979 1980 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 1981 lostconn(0); 1982 1983 cp = rbuf; 1984 switch (resp) { 1985 case 0: /* ok */ 1986 return (0); 1987 default: 1988 *cp++ = resp; 1989 /* FALLTHROUGH */ 1990 case 1: /* error, followed by error msg */ 1991 case 2: /* fatal error, "" */ 1992 do { 1993 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1994 lostconn(0); 1995 *cp++ = ch; 1996 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 1997 1998 if (!iamremote) { 1999 cp[-1] = '\0'; 2000 (void) snmprintf(visbuf, sizeof(visbuf), 2001 NULL, "%s\n", rbuf); 2002 (void) atomicio(vwrite, STDERR_FILENO, 2003 visbuf, strlen(visbuf)); 2004 } 2005 ++errs; 2006 if (resp == 1) 2007 return (-1); 2008 exit(1); 2009 } 2010 /* NOTREACHED */ 2011 } 2012 2013 void 2014 usage(void) 2015 { 2016 (void) fprintf(stderr, 2017 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2018 " [-i identity_file] [-J destination] [-l limit]\n" 2019 " [-o ssh_option] [-P port] [-S program] source ... target\n"); 2020 exit(1); 2021 } 2022 2023 void 2024 run_err(const char *fmt,...) 2025 { 2026 static FILE *fp; 2027 va_list ap; 2028 2029 ++errs; 2030 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2031 (void) fprintf(fp, "%c", 0x01); 2032 (void) fprintf(fp, "scp: "); 2033 va_start(ap, fmt); 2034 (void) vfprintf(fp, fmt, ap); 2035 va_end(ap); 2036 (void) fprintf(fp, "\n"); 2037 (void) fflush(fp); 2038 } 2039 2040 if (!iamremote) { 2041 va_start(ap, fmt); 2042 vfmprintf(stderr, fmt, ap); 2043 va_end(ap); 2044 fprintf(stderr, "\n"); 2045 } 2046 } 2047 2048 /* 2049 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2050 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2051 * any active error at the end of the transfer. 2052 */ 2053 int 2054 note_err(const char *fmt, ...) 2055 { 2056 static char *emsg; 2057 va_list ap; 2058 2059 /* Replay any previously-noted error */ 2060 if (fmt == NULL) { 2061 if (emsg == NULL) 2062 return 0; 2063 run_err("%s", emsg); 2064 free(emsg); 2065 emsg = NULL; 2066 return -1; 2067 } 2068 2069 errs++; 2070 /* Prefer first-noted error */ 2071 if (emsg != NULL) 2072 return -1; 2073 2074 va_start(ap, fmt); 2075 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2076 va_end(ap); 2077 return -1; 2078 } 2079 2080 void 2081 verifydir(char *cp) 2082 { 2083 struct stat stb; 2084 2085 if (!stat(cp, &stb)) { 2086 if (S_ISDIR(stb.st_mode)) 2087 return; 2088 errno = ENOTDIR; 2089 } 2090 run_err("%s: %s", cp, strerror(errno)); 2091 killchild(0); 2092 } 2093 2094 int 2095 okname(char *cp0) 2096 { 2097 int c; 2098 char *cp; 2099 2100 cp = cp0; 2101 do { 2102 c = (int)*cp; 2103 if (c & 0200) 2104 goto bad; 2105 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2106 switch (c) { 2107 case '\'': 2108 case '"': 2109 case '`': 2110 case ' ': 2111 case '#': 2112 goto bad; 2113 default: 2114 break; 2115 } 2116 } 2117 } while (*++cp); 2118 return (1); 2119 2120 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2121 return (0); 2122 } 2123 2124 BUF * 2125 allocbuf(BUF *bp, int fd, int blksize) 2126 { 2127 size_t size; 2128 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE 2129 struct stat stb; 2130 2131 if (fstat(fd, &stb) == -1) { 2132 run_err("fstat: %s", strerror(errno)); 2133 return (0); 2134 } 2135 size = ROUNDUP(stb.st_blksize, blksize); 2136 if (size == 0) 2137 size = blksize; 2138 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2139 size = blksize; 2140 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2141 if (bp->cnt >= size) 2142 return (bp); 2143 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2144 bp->cnt = size; 2145 return (bp); 2146 } 2147 2148 void 2149 lostconn(int signo) 2150 { 2151 if (!iamremote) 2152 (void)write(STDERR_FILENO, "lost connection\n", 16); 2153 if (signo) 2154 _exit(1); 2155 else 2156 exit(1); 2157 } 2158 2159 void 2160 cleanup_exit(int i) 2161 { 2162 if (remin > 0) 2163 close(remin); 2164 if (remout > 0) 2165 close(remout); 2166 if (remin2 > 0) 2167 close(remin2); 2168 if (remout2 > 0) 2169 close(remout2); 2170 if (do_cmd_pid > 0) 2171 waitpid(do_cmd_pid, NULL, 0); 2172 if (do_cmd_pid2 > 0) 2173 waitpid(do_cmd_pid2, NULL, 0); 2174 exit(i); 2175 } 2176