1 /* $OpenBSD: scp.c,v 1.252 2023/01/10 23:22:15 millert 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 <sys/types.h> 75 #include <sys/poll.h> 76 #include <sys/wait.h> 77 #include <sys/stat.h> 78 #include <sys/time.h> 79 #include <sys/uio.h> 80 81 #include <ctype.h> 82 #include <dirent.h> 83 #include <errno.h> 84 #include <fcntl.h> 85 #include <fnmatch.h> 86 #include <glob.h> 87 #include <libgen.h> 88 #include <locale.h> 89 #include <pwd.h> 90 #include <signal.h> 91 #include <stdarg.h> 92 #include <stdint.h> 93 #include <stdio.h> 94 #include <stdlib.h> 95 #include <string.h> 96 #include <time.h> 97 #include <unistd.h> 98 #include <limits.h> 99 #include <util.h> 100 #include <vis.h> 101 102 #include "xmalloc.h" 103 #include "ssh.h" 104 #include "atomicio.h" 105 #include "pathnames.h" 106 #include "log.h" 107 #include "misc.h" 108 #include "progressmeter.h" 109 #include "utf8.h" 110 #include "sftp.h" 111 112 #include "sftp-common.h" 113 #include "sftp-client.h" 114 115 #define COPY_BUFLEN 16384 116 117 int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *); 118 int do_cmd2(char *, char *, int, char *, int, int); 119 120 /* Struct for addargs */ 121 arglist args; 122 arglist remote_remote_args; 123 124 /* Bandwidth limit */ 125 long long limit_kbps = 0; 126 struct bwlimit bwlimit; 127 128 /* Name of current file being transferred. */ 129 char *curfile; 130 131 /* This is set to non-zero to enable verbose mode. */ 132 int verbose_mode = 0; 133 LogLevel log_level = SYSLOG_LEVEL_INFO; 134 135 /* This is set to zero if the progressmeter is not desired. */ 136 int showprogress = 1; 137 138 /* 139 * This is set to non-zero if remote-remote copy should be piped 140 * through this process. 141 */ 142 int throughlocal = 1; 143 144 /* Non-standard port to use for the ssh connection or -1. */ 145 int sshport = -1; 146 147 /* This is the program to execute for the secured connection. ("ssh" or -S) */ 148 char *ssh_program = _PATH_SSH_PROGRAM; 149 150 /* This is used to store the pid of ssh_program */ 151 pid_t do_cmd_pid = -1; 152 pid_t do_cmd_pid2 = -1; 153 154 /* SFTP copy parameters */ 155 size_t sftp_copy_buflen; 156 size_t sftp_nrequests; 157 158 /* Needed for sftp */ 159 volatile sig_atomic_t interrupted = 0; 160 161 int remote_glob(struct sftp_conn *, const char *, int, 162 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ 163 164 static void 165 killchild(int signo) 166 { 167 if (do_cmd_pid > 1) { 168 kill(do_cmd_pid, signo ? signo : SIGTERM); 169 waitpid(do_cmd_pid, NULL, 0); 170 } 171 if (do_cmd_pid2 > 1) { 172 kill(do_cmd_pid2, signo ? signo : SIGTERM); 173 waitpid(do_cmd_pid2, NULL, 0); 174 } 175 176 if (signo) 177 _exit(1); 178 exit(1); 179 } 180 181 static void 182 suspone(int pid, int signo) 183 { 184 int status; 185 186 if (pid > 1) { 187 kill(pid, signo); 188 while (waitpid(pid, &status, WUNTRACED) == -1 && 189 errno == EINTR) 190 ; 191 } 192 } 193 194 static void 195 suspchild(int signo) 196 { 197 suspone(do_cmd_pid, signo); 198 suspone(do_cmd_pid2, signo); 199 kill(getpid(), SIGSTOP); 200 } 201 202 static int 203 do_local_cmd(arglist *a) 204 { 205 u_int i; 206 int status; 207 pid_t pid; 208 209 if (a->num == 0) 210 fatal("do_local_cmd: no arguments"); 211 212 if (verbose_mode) { 213 fprintf(stderr, "Executing:"); 214 for (i = 0; i < a->num; i++) 215 fmprintf(stderr, " %s", a->list[i]); 216 fprintf(stderr, "\n"); 217 } 218 if ((pid = fork()) == -1) 219 fatal("do_local_cmd: fork: %s", strerror(errno)); 220 221 if (pid == 0) { 222 execvp(a->list[0], a->list); 223 perror(a->list[0]); 224 exit(1); 225 } 226 227 do_cmd_pid = pid; 228 ssh_signal(SIGTERM, killchild); 229 ssh_signal(SIGINT, killchild); 230 ssh_signal(SIGHUP, killchild); 231 232 while (waitpid(pid, &status, 0) == -1) 233 if (errno != EINTR) 234 fatal("do_local_cmd: waitpid: %s", strerror(errno)); 235 236 do_cmd_pid = -1; 237 238 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 239 return (-1); 240 241 return (0); 242 } 243 244 /* 245 * This function executes the given command as the specified user on the 246 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This 247 * assigns the input and output file descriptors on success. 248 */ 249 250 int 251 do_cmd(char *program, char *host, char *remuser, int port, int subsystem, 252 char *cmd, int *fdin, int *fdout, pid_t *pid) 253 { 254 int sv[2]; 255 256 if (verbose_mode) 257 fmprintf(stderr, 258 "Executing: program %s host %s, user %s, command %s\n", 259 program, host, 260 remuser ? remuser : "(unspecified)", cmd); 261 262 if (port == -1) 263 port = sshport; 264 265 /* Create a socket pair for communicating with ssh. */ 266 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) 267 fatal("socketpair: %s", strerror(errno)); 268 269 ssh_signal(SIGTSTP, suspchild); 270 ssh_signal(SIGTTIN, suspchild); 271 ssh_signal(SIGTTOU, suspchild); 272 273 /* Fork a child to execute the command on the remote host using ssh. */ 274 *pid = fork(); 275 switch (*pid) { 276 case -1: 277 fatal("fork: %s", strerror(errno)); 278 case 0: 279 /* Child. */ 280 if (dup2(sv[0], STDIN_FILENO) == -1 || 281 dup2(sv[0], STDOUT_FILENO) == -1) { 282 perror("dup2"); 283 _exit(1); 284 } 285 close(sv[0]); 286 close(sv[1]); 287 replacearg(&args, 0, "%s", program); 288 if (port != -1) { 289 addargs(&args, "-p"); 290 addargs(&args, "%d", port); 291 } 292 if (remuser != NULL) { 293 addargs(&args, "-l"); 294 addargs(&args, "%s", remuser); 295 } 296 if (subsystem) 297 addargs(&args, "-s"); 298 addargs(&args, "--"); 299 addargs(&args, "%s", host); 300 addargs(&args, "%s", cmd); 301 302 execvp(program, args.list); 303 perror(program); 304 _exit(1); 305 default: 306 /* Parent. Close the other side, and return the local side. */ 307 close(sv[0]); 308 *fdin = sv[1]; 309 *fdout = sv[1]; 310 ssh_signal(SIGTERM, killchild); 311 ssh_signal(SIGINT, killchild); 312 ssh_signal(SIGHUP, killchild); 313 return 0; 314 } 315 } 316 317 /* 318 * This function executes a command similar to do_cmd(), but expects the 319 * input and output descriptors to be setup by a previous call to do_cmd(). 320 * This way the input and output of two commands can be connected. 321 */ 322 int 323 do_cmd2(char *host, char *remuser, int port, char *cmd, 324 int fdin, int fdout) 325 { 326 int status; 327 pid_t pid; 328 329 if (verbose_mode) 330 fmprintf(stderr, 331 "Executing: 2nd program %s host %s, user %s, command %s\n", 332 ssh_program, host, 333 remuser ? remuser : "(unspecified)", cmd); 334 335 if (port == -1) 336 port = sshport; 337 338 /* Fork a child to execute the command on the remote host using ssh. */ 339 pid = fork(); 340 if (pid == 0) { 341 dup2(fdin, 0); 342 dup2(fdout, 1); 343 344 replacearg(&args, 0, "%s", ssh_program); 345 if (port != -1) { 346 addargs(&args, "-p"); 347 addargs(&args, "%d", port); 348 } 349 if (remuser != NULL) { 350 addargs(&args, "-l"); 351 addargs(&args, "%s", remuser); 352 } 353 addargs(&args, "-oBatchMode=yes"); 354 addargs(&args, "--"); 355 addargs(&args, "%s", host); 356 addargs(&args, "%s", cmd); 357 358 execvp(ssh_program, args.list); 359 perror(ssh_program); 360 exit(1); 361 } else if (pid == -1) { 362 fatal("fork: %s", strerror(errno)); 363 } 364 while (waitpid(pid, &status, 0) == -1) 365 if (errno != EINTR) 366 fatal("do_cmd2: waitpid: %s", strerror(errno)); 367 return 0; 368 } 369 370 typedef struct { 371 size_t cnt; 372 char *buf; 373 } BUF; 374 375 BUF *allocbuf(BUF *, int, int); 376 void lostconn(int); 377 int okname(char *); 378 void run_err(const char *,...) 379 __attribute__((__format__ (printf, 1, 2))) 380 __attribute__((__nonnull__ (1))); 381 int note_err(const char *,...) 382 __attribute__((__format__ (printf, 1, 2))); 383 void verifydir(char *); 384 385 struct passwd *pwd; 386 uid_t userid; 387 int errs, remin, remout, remin2, remout2; 388 int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 389 390 #define CMDNEEDS 64 391 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 392 393 enum scp_mode_e { 394 MODE_SCP, 395 MODE_SFTP 396 }; 397 398 int response(void); 399 void rsource(char *, struct stat *); 400 void sink(int, char *[], const char *); 401 void source(int, char *[]); 402 void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 403 void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 404 void usage(void); 405 406 void source_sftp(int, char *, char *, struct sftp_conn *); 407 void sink_sftp(int, char *, const char *, struct sftp_conn *); 408 void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 409 char *, char *); 410 411 int 412 main(int argc, char **argv) 413 { 414 int ch, fflag, tflag, status, r, n; 415 char **newargv, *argv0; 416 const char *errstr; 417 extern char *optarg; 418 extern int optind; 419 enum scp_mode_e mode = MODE_SFTP; 420 char *sftp_direct = NULL; 421 long long llv; 422 423 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 424 sanitise_stdfd(); 425 426 setlocale(LC_CTYPE, ""); 427 428 /* Copy argv, because we modify it */ 429 argv0 = argv[0]; 430 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 431 for (n = 0; n < argc; n++) 432 newargv[n] = xstrdup(argv[n]); 433 argv = newargv; 434 435 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 436 437 memset(&args, '\0', sizeof(args)); 438 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 439 args.list = remote_remote_args.list = NULL; 440 addargs(&args, "%s", ssh_program); 441 addargs(&args, "-x"); 442 addargs(&args, "-oPermitLocalCommand=no"); 443 addargs(&args, "-oClearAllForwardings=yes"); 444 addargs(&args, "-oRemoteCommand=none"); 445 addargs(&args, "-oRequestTTY=no"); 446 447 fflag = Tflag = tflag = 0; 448 while ((ch = getopt(argc, argv, 449 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) { 450 switch (ch) { 451 /* User-visible flags. */ 452 case '1': 453 fatal("SSH protocol v.1 is no longer supported"); 454 break; 455 case '2': 456 /* Ignored */ 457 break; 458 case 'A': 459 case '4': 460 case '6': 461 case 'C': 462 addargs(&args, "-%c", ch); 463 addargs(&remote_remote_args, "-%c", ch); 464 break; 465 case 'D': 466 sftp_direct = optarg; 467 break; 468 case '3': 469 throughlocal = 1; 470 break; 471 case 'R': 472 throughlocal = 0; 473 break; 474 case 'o': 475 case 'c': 476 case 'i': 477 case 'F': 478 case 'J': 479 addargs(&remote_remote_args, "-%c", ch); 480 addargs(&remote_remote_args, "%s", optarg); 481 addargs(&args, "-%c", ch); 482 addargs(&args, "%s", optarg); 483 break; 484 case 'O': 485 mode = MODE_SCP; 486 break; 487 case 's': 488 mode = MODE_SFTP; 489 break; 490 case 'P': 491 sshport = a2port(optarg); 492 if (sshport <= 0) 493 fatal("bad port \"%s\"\n", optarg); 494 break; 495 case 'B': 496 addargs(&remote_remote_args, "-oBatchmode=yes"); 497 addargs(&args, "-oBatchmode=yes"); 498 break; 499 case 'l': 500 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 501 &errstr); 502 if (errstr != NULL) 503 usage(); 504 limit_kbps *= 1024; /* kbps */ 505 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 506 break; 507 case 'p': 508 pflag = 1; 509 break; 510 case 'r': 511 iamrecursive = 1; 512 break; 513 case 'S': 514 ssh_program = xstrdup(optarg); 515 break; 516 case 'v': 517 addargs(&args, "-v"); 518 addargs(&remote_remote_args, "-v"); 519 if (verbose_mode == 0) 520 log_level = SYSLOG_LEVEL_DEBUG1; 521 else if (log_level < SYSLOG_LEVEL_DEBUG3) 522 log_level++; 523 verbose_mode = 1; 524 break; 525 case 'q': 526 addargs(&args, "-q"); 527 addargs(&remote_remote_args, "-q"); 528 showprogress = 0; 529 break; 530 case 'X': 531 /* Please keep in sync with sftp.c -X */ 532 if (strncmp(optarg, "buffer=", 7) == 0) { 533 r = scan_scaled(optarg + 7, &llv); 534 if (r == 0 && (llv <= 0 || llv > 256 * 1024)) { 535 r = -1; 536 errno = EINVAL; 537 } 538 if (r == -1) { 539 fatal("Invalid buffer size \"%s\": %s", 540 optarg + 7, strerror(errno)); 541 } 542 sftp_copy_buflen = (size_t)llv; 543 } else if (strncmp(optarg, "nrequests=", 10) == 0) { 544 llv = strtonum(optarg + 10, 1, 256 * 1024, 545 &errstr); 546 if (errstr != NULL) { 547 fatal("Invalid number of requests " 548 "\"%s\": %s", optarg + 10, errstr); 549 } 550 sftp_nrequests = (size_t)llv; 551 } else { 552 fatal("Invalid -X option"); 553 } 554 break; 555 556 /* Server options. */ 557 case 'd': 558 targetshouldbedirectory = 1; 559 break; 560 case 'f': /* "from" */ 561 iamremote = 1; 562 fflag = 1; 563 break; 564 case 't': /* "to" */ 565 iamremote = 1; 566 tflag = 1; 567 break; 568 case 'T': 569 Tflag = 1; 570 break; 571 default: 572 usage(); 573 } 574 } 575 argc -= optind; 576 argv += optind; 577 578 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 579 580 /* Do this last because we want the user to be able to override it */ 581 addargs(&args, "-oForwardAgent=no"); 582 583 if (iamremote) 584 mode = MODE_SCP; 585 586 if ((pwd = getpwuid(userid = getuid())) == NULL) 587 fatal("unknown user %u", (u_int) userid); 588 589 if (!isatty(STDOUT_FILENO)) 590 showprogress = 0; 591 592 if (pflag) { 593 /* Cannot pledge: -p allows setuid/setgid files... */ 594 } else { 595 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 596 NULL) == -1) { 597 perror("pledge"); 598 exit(1); 599 } 600 } 601 602 remin = STDIN_FILENO; 603 remout = STDOUT_FILENO; 604 605 if (fflag) { 606 /* Follow "protocol", send data. */ 607 (void) response(); 608 source(argc, argv); 609 exit(errs != 0); 610 } 611 if (tflag) { 612 /* Receive data. */ 613 sink(argc, argv, NULL); 614 exit(errs != 0); 615 } 616 if (argc < 2) 617 usage(); 618 if (argc > 2) 619 targetshouldbedirectory = 1; 620 621 remin = remout = -1; 622 do_cmd_pid = -1; 623 /* Command to be executed on remote system using "ssh". */ 624 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 625 verbose_mode ? " -v" : "", 626 iamrecursive ? " -r" : "", pflag ? " -p" : "", 627 targetshouldbedirectory ? " -d" : ""); 628 629 (void) ssh_signal(SIGPIPE, lostconn); 630 631 if (colon(argv[argc - 1])) /* Dest is remote host. */ 632 toremote(argc, argv, mode, sftp_direct); 633 else { 634 if (targetshouldbedirectory) 635 verifydir(argv[argc - 1]); 636 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 637 } 638 /* 639 * Finally check the exit status of the ssh process, if one was forked 640 * and no error has occurred yet 641 */ 642 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 643 if (remin != -1) 644 (void) close(remin); 645 if (remout != -1) 646 (void) close(remout); 647 if (waitpid(do_cmd_pid, &status, 0) == -1) 648 errs = 1; 649 else { 650 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 651 errs = 1; 652 } 653 } 654 exit(errs != 0); 655 } 656 657 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 658 static int 659 scpio(void *_cnt, size_t s) 660 { 661 off_t *cnt = (off_t *)_cnt; 662 663 *cnt += s; 664 refresh_progress_meter(0); 665 if (limit_kbps > 0) 666 bandwidth_limit(&bwlimit, s); 667 return 0; 668 } 669 670 static int 671 do_times(int fd, int verb, const struct stat *sb) 672 { 673 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 674 char buf[(20 + 7 + 2) * 2 + 2]; 675 676 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 677 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 678 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 679 if (verb) { 680 fprintf(stderr, "File mtime %lld atime %lld\n", 681 (long long)sb->st_mtime, (long long)sb->st_atime); 682 fprintf(stderr, "Sending file timestamps: %s", buf); 683 } 684 (void) atomicio(vwrite, fd, buf, strlen(buf)); 685 return (response()); 686 } 687 688 static int 689 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 690 char **pathp) 691 { 692 int r; 693 694 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 695 if (r == 0 && *pathp == NULL) 696 *pathp = xstrdup("."); 697 return r; 698 } 699 700 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 701 static int 702 append(char *cp, char ***ap, size_t *np) 703 { 704 char **tmp; 705 706 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 707 return -1; 708 tmp[(*np)] = cp; 709 (*np)++; 710 *ap = tmp; 711 return 0; 712 } 713 714 /* 715 * Finds the start and end of the first brace pair in the pattern. 716 * returns 0 on success or -1 for invalid patterns. 717 */ 718 static int 719 find_brace(const char *pattern, int *startp, int *endp) 720 { 721 int i; 722 int in_bracket, brace_level; 723 724 *startp = *endp = -1; 725 in_bracket = brace_level = 0; 726 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 727 switch (pattern[i]) { 728 case '\\': 729 /* skip next character */ 730 if (pattern[i + 1] != '\0') 731 i++; 732 break; 733 case '[': 734 in_bracket = 1; 735 break; 736 case ']': 737 in_bracket = 0; 738 break; 739 case '{': 740 if (in_bracket) 741 break; 742 if (pattern[i + 1] == '}') { 743 /* Protect a single {}, for find(1), like csh */ 744 i++; /* skip */ 745 break; 746 } 747 if (*startp == -1) 748 *startp = i; 749 brace_level++; 750 break; 751 case '}': 752 if (in_bracket) 753 break; 754 if (*startp < 0) { 755 /* Unbalanced brace */ 756 return -1; 757 } 758 if (--brace_level <= 0) 759 *endp = i; 760 break; 761 } 762 } 763 /* unbalanced brackets/braces */ 764 if (*endp < 0 && (*startp >= 0 || in_bracket)) 765 return -1; 766 return 0; 767 } 768 769 /* 770 * Assembles and records a successfully-expanded pattern, returns -1 on 771 * alloc failure. 772 */ 773 static int 774 emit_expansion(const char *pattern, int brace_start, int brace_end, 775 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 776 { 777 char *cp; 778 int o = 0, tail_len = strlen(pattern + brace_end + 1); 779 780 if ((cp = malloc(brace_start + (sel_end - sel_start) + 781 tail_len + 1)) == NULL) 782 return -1; 783 784 /* Pattern before initial brace */ 785 if (brace_start > 0) { 786 memcpy(cp, pattern, brace_start); 787 o = brace_start; 788 } 789 /* Current braced selection */ 790 if (sel_end - sel_start > 0) { 791 memcpy(cp + o, pattern + sel_start, 792 sel_end - sel_start); 793 o += sel_end - sel_start; 794 } 795 /* Remainder of pattern after closing brace */ 796 if (tail_len > 0) { 797 memcpy(cp + o, pattern + brace_end + 1, tail_len); 798 o += tail_len; 799 } 800 cp[o] = '\0'; 801 if (append(cp, patternsp, npatternsp) != 0) { 802 free(cp); 803 return -1; 804 } 805 return 0; 806 } 807 808 /* 809 * Expand the first encountered brace in pattern, appending the expanded 810 * patterns it yielded to the *patternsp array. 811 * 812 * Returns 0 on success or -1 on allocation failure. 813 * 814 * Signals whether expansion was performed via *expanded and whether 815 * pattern was invalid via *invalid. 816 */ 817 static int 818 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 819 int *expanded, int *invalid) 820 { 821 int i; 822 int in_bracket, brace_start, brace_end, brace_level; 823 int sel_start, sel_end; 824 825 *invalid = *expanded = 0; 826 827 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 828 *invalid = 1; 829 return 0; 830 } else if (brace_start == -1) 831 return 0; 832 833 in_bracket = brace_level = 0; 834 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 835 switch (pattern[i]) { 836 case '{': 837 if (in_bracket) 838 break; 839 brace_level++; 840 break; 841 case '}': 842 if (in_bracket) 843 break; 844 brace_level--; 845 break; 846 case '[': 847 in_bracket = 1; 848 break; 849 case ']': 850 in_bracket = 0; 851 break; 852 case '\\': 853 if (i < brace_end - 1) 854 i++; /* skip */ 855 break; 856 } 857 if (pattern[i] == ',' || i == brace_end - 1) { 858 if (in_bracket || brace_level > 0) 859 continue; 860 /* End of a selection, emit an expanded pattern */ 861 862 /* Adjust end index for last selection */ 863 sel_end = (i == brace_end - 1) ? brace_end : i; 864 if (emit_expansion(pattern, brace_start, brace_end, 865 sel_start, sel_end, patternsp, npatternsp) != 0) 866 return -1; 867 /* move on to the next selection */ 868 sel_start = i + 1; 869 continue; 870 } 871 } 872 if (in_bracket || brace_level > 0) { 873 *invalid = 1; 874 return 0; 875 } 876 /* success */ 877 *expanded = 1; 878 return 0; 879 } 880 881 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 882 static int 883 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 884 { 885 char *cp, *cp2, **active = NULL, **done = NULL; 886 size_t i, nactive = 0, ndone = 0; 887 int ret = -1, invalid = 0, expanded = 0; 888 889 *patternsp = NULL; 890 *npatternsp = 0; 891 892 /* Start the worklist with the original pattern */ 893 if ((cp = strdup(pattern)) == NULL) 894 return -1; 895 if (append(cp, &active, &nactive) != 0) { 896 free(cp); 897 return -1; 898 } 899 while (nactive > 0) { 900 cp = active[nactive - 1]; 901 nactive--; 902 if (brace_expand_one(cp, &active, &nactive, 903 &expanded, &invalid) == -1) { 904 free(cp); 905 goto fail; 906 } 907 if (invalid) 908 fatal_f("invalid brace pattern \"%s\"", cp); 909 if (expanded) { 910 /* 911 * Current entry expanded to new entries on the 912 * active list; discard the progenitor pattern. 913 */ 914 free(cp); 915 continue; 916 } 917 /* 918 * Pattern did not expand; append the finename component to 919 * the completed list 920 */ 921 if ((cp2 = strrchr(cp, '/')) != NULL) 922 *cp2++ = '\0'; 923 else 924 cp2 = cp; 925 if (append(xstrdup(cp2), &done, &ndone) != 0) { 926 free(cp); 927 goto fail; 928 } 929 free(cp); 930 } 931 /* success */ 932 *patternsp = done; 933 *npatternsp = ndone; 934 done = NULL; 935 ndone = 0; 936 ret = 0; 937 fail: 938 for (i = 0; i < nactive; i++) 939 free(active[i]); 940 free(active); 941 for (i = 0; i < ndone; i++) 942 free(done[i]); 943 free(done); 944 return ret; 945 } 946 947 static struct sftp_conn * 948 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 949 int *reminp, int *remoutp, int *pidp) 950 { 951 if (sftp_direct == NULL) { 952 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 953 reminp, remoutp, pidp) < 0) 954 return NULL; 955 956 } else { 957 freeargs(&args); 958 addargs(&args, "sftp-server"); 959 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 960 reminp, remoutp, pidp) < 0) 961 return NULL; 962 } 963 return do_init(*reminp, *remoutp, 964 sftp_copy_buflen, sftp_nrequests, limit_kbps); 965 } 966 967 void 968 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 969 { 970 char *suser = NULL, *host = NULL, *src = NULL; 971 char *bp, *tuser, *thost, *targ; 972 int sport = -1, tport = -1; 973 struct sftp_conn *conn = NULL, *conn2 = NULL; 974 arglist alist; 975 int i, r, status; 976 u_int j; 977 978 memset(&alist, '\0', sizeof(alist)); 979 alist.list = NULL; 980 981 /* Parse target */ 982 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 983 if (r == -1) { 984 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 985 ++errs; 986 goto out; 987 } 988 if (r != 0) { 989 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 990 &targ) == -1) { 991 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 992 ++errs; 993 goto out; 994 } 995 } 996 997 /* Parse source files */ 998 for (i = 0; i < argc - 1; i++) { 999 free(suser); 1000 free(host); 1001 free(src); 1002 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1003 if (r == -1) { 1004 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1005 ++errs; 1006 continue; 1007 } 1008 if (r != 0) { 1009 parse_user_host_path(argv[i], &suser, &host, &src); 1010 } 1011 if (suser != NULL && !okname(suser)) { 1012 ++errs; 1013 continue; 1014 } 1015 if (host && throughlocal) { /* extended remote to remote */ 1016 if (mode == MODE_SFTP) { 1017 if (remin == -1) { 1018 /* Connect to dest now */ 1019 conn = do_sftp_connect(thost, tuser, 1020 tport, sftp_direct, 1021 &remin, &remout, &do_cmd_pid); 1022 if (conn == NULL) { 1023 fatal("Unable to open " 1024 "destination connection"); 1025 } 1026 debug3_f("origin in %d out %d pid %ld", 1027 remin, remout, (long)do_cmd_pid); 1028 } 1029 /* 1030 * XXX remember suser/host/sport and only 1031 * reconnect if they change between arguments. 1032 * would save reconnections for cases like 1033 * scp -3 hosta:/foo hosta:/bar hostb: 1034 */ 1035 /* Connect to origin now */ 1036 conn2 = do_sftp_connect(host, suser, 1037 sport, sftp_direct, 1038 &remin2, &remout2, &do_cmd_pid2); 1039 if (conn2 == NULL) { 1040 fatal("Unable to open " 1041 "source connection"); 1042 } 1043 debug3_f("destination in %d out %d pid %ld", 1044 remin2, remout2, (long)do_cmd_pid2); 1045 throughlocal_sftp(conn2, conn, src, targ); 1046 (void) close(remin2); 1047 (void) close(remout2); 1048 remin2 = remout2 = -1; 1049 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1050 ++errs; 1051 else if (!WIFEXITED(status) || 1052 WEXITSTATUS(status) != 0) 1053 ++errs; 1054 do_cmd_pid2 = -1; 1055 continue; 1056 } else { 1057 xasprintf(&bp, "%s -f %s%s", cmd, 1058 *src == '-' ? "-- " : "", src); 1059 if (do_cmd(ssh_program, host, suser, sport, 0, 1060 bp, &remin, &remout, &do_cmd_pid) < 0) 1061 exit(1); 1062 free(bp); 1063 xasprintf(&bp, "%s -t %s%s", cmd, 1064 *targ == '-' ? "-- " : "", targ); 1065 if (do_cmd2(thost, tuser, tport, bp, 1066 remin, remout) < 0) 1067 exit(1); 1068 free(bp); 1069 (void) close(remin); 1070 (void) close(remout); 1071 remin = remout = -1; 1072 } 1073 } else if (host) { /* standard remote to remote */ 1074 /* 1075 * Second remote user is passed to first remote side 1076 * via scp command-line. Ensure it contains no obvious 1077 * shell characters. 1078 */ 1079 if (tuser != NULL && !okname(tuser)) { 1080 ++errs; 1081 continue; 1082 } 1083 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1084 /* This would require the remote support URIs */ 1085 fatal("target port not supported with two " 1086 "remote hosts and the -R option"); 1087 } 1088 1089 freeargs(&alist); 1090 addargs(&alist, "%s", ssh_program); 1091 addargs(&alist, "-x"); 1092 addargs(&alist, "-oClearAllForwardings=yes"); 1093 addargs(&alist, "-n"); 1094 for (j = 0; j < remote_remote_args.num; j++) { 1095 addargs(&alist, "%s", 1096 remote_remote_args.list[j]); 1097 } 1098 1099 if (sport != -1) { 1100 addargs(&alist, "-p"); 1101 addargs(&alist, "%d", sport); 1102 } 1103 if (suser) { 1104 addargs(&alist, "-l"); 1105 addargs(&alist, "%s", suser); 1106 } 1107 addargs(&alist, "--"); 1108 addargs(&alist, "%s", host); 1109 addargs(&alist, "%s", cmd); 1110 addargs(&alist, "%s", src); 1111 addargs(&alist, "%s%s%s:%s", 1112 tuser ? tuser : "", tuser ? "@" : "", 1113 thost, targ); 1114 if (do_local_cmd(&alist) != 0) 1115 errs = 1; 1116 } else { /* local to remote */ 1117 if (mode == MODE_SFTP) { 1118 if (remin == -1) { 1119 /* Connect to remote now */ 1120 conn = do_sftp_connect(thost, tuser, 1121 tport, sftp_direct, 1122 &remin, &remout, &do_cmd_pid); 1123 if (conn == NULL) { 1124 fatal("Unable to open sftp " 1125 "connection"); 1126 } 1127 } 1128 1129 /* The protocol */ 1130 source_sftp(1, argv[i], targ, conn); 1131 continue; 1132 } 1133 /* SCP */ 1134 if (remin == -1) { 1135 xasprintf(&bp, "%s -t %s%s", cmd, 1136 *targ == '-' ? "-- " : "", targ); 1137 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1138 bp, &remin, &remout, &do_cmd_pid) < 0) 1139 exit(1); 1140 if (response() < 0) 1141 exit(1); 1142 free(bp); 1143 } 1144 source(1, argv + i); 1145 } 1146 } 1147 out: 1148 if (mode == MODE_SFTP) 1149 free(conn); 1150 free(tuser); 1151 free(thost); 1152 free(targ); 1153 free(suser); 1154 free(host); 1155 free(src); 1156 } 1157 1158 void 1159 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1160 { 1161 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1162 arglist alist; 1163 struct sftp_conn *conn = NULL; 1164 int i, r, sport = -1; 1165 1166 memset(&alist, '\0', sizeof(alist)); 1167 alist.list = NULL; 1168 1169 for (i = 0; i < argc - 1; i++) { 1170 free(suser); 1171 free(host); 1172 free(src); 1173 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1174 if (r == -1) { 1175 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1176 ++errs; 1177 continue; 1178 } 1179 if (r != 0) 1180 parse_user_host_path(argv[i], &suser, &host, &src); 1181 if (suser != NULL && !okname(suser)) { 1182 ++errs; 1183 continue; 1184 } 1185 if (!host) { /* Local to local. */ 1186 freeargs(&alist); 1187 addargs(&alist, "%s", _PATH_CP); 1188 if (iamrecursive) 1189 addargs(&alist, "-r"); 1190 if (pflag) 1191 addargs(&alist, "-p"); 1192 addargs(&alist, "--"); 1193 addargs(&alist, "%s", argv[i]); 1194 addargs(&alist, "%s", argv[argc-1]); 1195 if (do_local_cmd(&alist)) 1196 ++errs; 1197 continue; 1198 } 1199 /* Remote to local. */ 1200 if (mode == MODE_SFTP) { 1201 conn = do_sftp_connect(host, suser, sport, 1202 sftp_direct, &remin, &remout, &do_cmd_pid); 1203 if (conn == NULL) { 1204 error("sftp connection failed"); 1205 ++errs; 1206 continue; 1207 } 1208 1209 /* The protocol */ 1210 sink_sftp(1, argv[argc - 1], src, conn); 1211 1212 free(conn); 1213 (void) close(remin); 1214 (void) close(remout); 1215 remin = remout = -1; 1216 continue; 1217 } 1218 /* SCP */ 1219 xasprintf(&bp, "%s -f %s%s", 1220 cmd, *src == '-' ? "-- " : "", src); 1221 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1222 &remin, &remout, &do_cmd_pid) < 0) { 1223 free(bp); 1224 ++errs; 1225 continue; 1226 } 1227 free(bp); 1228 sink(1, argv + argc - 1, src); 1229 (void) close(remin); 1230 remin = remout = -1; 1231 } 1232 free(suser); 1233 free(host); 1234 free(src); 1235 } 1236 1237 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1238 static char * 1239 prepare_remote_path(struct sftp_conn *conn, const char *path) 1240 { 1241 size_t nslash; 1242 1243 /* Handle ~ prefixed paths */ 1244 if (*path == '\0' || strcmp(path, "~") == 0) 1245 return xstrdup("."); 1246 if (*path != '~') 1247 return xstrdup(path); 1248 if (strncmp(path, "~/", 2) == 0) { 1249 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1250 return xstrdup("."); 1251 return xstrdup(path + 2 + nslash); 1252 } 1253 if (can_expand_path(conn)) 1254 return do_expand_path(conn, path); 1255 /* No protocol extension */ 1256 error("server expand-path extension is required " 1257 "for ~user paths in SFTP mode"); 1258 return NULL; 1259 } 1260 1261 void 1262 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1263 { 1264 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1265 int src_is_dir, target_is_dir; 1266 Attrib a; 1267 struct stat st; 1268 1269 memset(&a, '\0', sizeof(a)); 1270 if (stat(src, &st) != 0) 1271 fatal("stat local \"%s\": %s", src, strerror(errno)); 1272 src_is_dir = S_ISDIR(st.st_mode); 1273 if ((filename = basename(src)) == NULL) 1274 fatal("basename \"%s\": %s", src, strerror(errno)); 1275 1276 /* 1277 * No need to glob here - the local shell already took care of 1278 * the expansions 1279 */ 1280 if ((target = prepare_remote_path(conn, targ)) == NULL) 1281 cleanup_exit(255); 1282 target_is_dir = remote_is_dir(conn, target); 1283 if (targetshouldbedirectory && !target_is_dir) { 1284 debug("target directory \"%s\" does not exist", target); 1285 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1286 a.perm = st.st_mode | 0700; /* ensure writable */ 1287 if (do_mkdir(conn, target, &a, 1) != 0) 1288 cleanup_exit(255); /* error already logged */ 1289 target_is_dir = 1; 1290 } 1291 if (target_is_dir) 1292 abs_dst = path_append(target, filename); 1293 else { 1294 abs_dst = target; 1295 target = NULL; 1296 } 1297 debug3_f("copying local %s to remote %s", src, abs_dst); 1298 1299 if (src_is_dir && iamrecursive) { 1300 if (upload_dir(conn, src, abs_dst, pflag, 1301 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1302 error("failed to upload directory %s to %s", src, targ); 1303 errs = 1; 1304 } 1305 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1306 error("failed to upload file %s to %s", src, targ); 1307 errs = 1; 1308 } 1309 1310 free(abs_dst); 1311 free(target); 1312 } 1313 1314 void 1315 source(int argc, char **argv) 1316 { 1317 struct stat stb; 1318 static BUF buffer; 1319 BUF *bp; 1320 off_t i, statbytes; 1321 size_t amt, nr; 1322 int fd = -1, haderr, indx; 1323 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1324 int len; 1325 1326 for (indx = 0; indx < argc; ++indx) { 1327 name = argv[indx]; 1328 statbytes = 0; 1329 len = strlen(name); 1330 while (len > 1 && name[len-1] == '/') 1331 name[--len] = '\0'; 1332 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1333 goto syserr; 1334 if (strchr(name, '\n') != NULL) { 1335 strnvis(encname, name, sizeof(encname), VIS_NL); 1336 name = encname; 1337 } 1338 if (fstat(fd, &stb) == -1) { 1339 syserr: run_err("%s: %s", name, strerror(errno)); 1340 goto next; 1341 } 1342 if (stb.st_size < 0) { 1343 run_err("%s: %s", name, "Negative file size"); 1344 goto next; 1345 } 1346 unset_nonblock(fd); 1347 switch (stb.st_mode & S_IFMT) { 1348 case S_IFREG: 1349 break; 1350 case S_IFDIR: 1351 if (iamrecursive) { 1352 rsource(name, &stb); 1353 goto next; 1354 } 1355 /* FALLTHROUGH */ 1356 default: 1357 run_err("%s: not a regular file", name); 1358 goto next; 1359 } 1360 if ((last = strrchr(name, '/')) == NULL) 1361 last = name; 1362 else 1363 ++last; 1364 curfile = last; 1365 if (pflag) { 1366 if (do_times(remout, verbose_mode, &stb) < 0) 1367 goto next; 1368 } 1369 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1370 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1371 (u_int) (stb.st_mode & FILEMODEMASK), 1372 (long long)stb.st_size, last); 1373 if (verbose_mode) 1374 fmprintf(stderr, "Sending file modes: %s", buf); 1375 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1376 if (response() < 0) 1377 goto next; 1378 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1379 next: if (fd != -1) { 1380 (void) close(fd); 1381 fd = -1; 1382 } 1383 continue; 1384 } 1385 if (showprogress) 1386 start_progress_meter(curfile, stb.st_size, &statbytes); 1387 set_nonblock(remout); 1388 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1389 amt = bp->cnt; 1390 if (i + (off_t)amt > stb.st_size) 1391 amt = stb.st_size - i; 1392 if (!haderr) { 1393 if ((nr = atomicio(read, fd, 1394 bp->buf, amt)) != amt) { 1395 haderr = errno; 1396 memset(bp->buf + nr, 0, amt - nr); 1397 } 1398 } 1399 /* Keep writing after error to retain sync */ 1400 if (haderr) { 1401 (void)atomicio(vwrite, remout, bp->buf, amt); 1402 memset(bp->buf, 0, amt); 1403 continue; 1404 } 1405 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1406 &statbytes) != amt) 1407 haderr = errno; 1408 } 1409 unset_nonblock(remout); 1410 1411 if (fd != -1) { 1412 if (close(fd) == -1 && !haderr) 1413 haderr = errno; 1414 fd = -1; 1415 } 1416 if (!haderr) 1417 (void) atomicio(vwrite, remout, "", 1); 1418 else 1419 run_err("%s: %s", name, strerror(haderr)); 1420 (void) response(); 1421 if (showprogress) 1422 stop_progress_meter(); 1423 } 1424 } 1425 1426 void 1427 rsource(char *name, struct stat *statp) 1428 { 1429 DIR *dirp; 1430 struct dirent *dp; 1431 char *last, *vect[1], path[PATH_MAX]; 1432 1433 if (!(dirp = opendir(name))) { 1434 run_err("%s: %s", name, strerror(errno)); 1435 return; 1436 } 1437 last = strrchr(name, '/'); 1438 if (last == NULL) 1439 last = name; 1440 else 1441 last++; 1442 if (pflag) { 1443 if (do_times(remout, verbose_mode, statp) < 0) { 1444 closedir(dirp); 1445 return; 1446 } 1447 } 1448 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1449 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1450 if (verbose_mode) 1451 fmprintf(stderr, "Entering directory: %s", path); 1452 (void) atomicio(vwrite, remout, path, strlen(path)); 1453 if (response() < 0) { 1454 closedir(dirp); 1455 return; 1456 } 1457 while ((dp = readdir(dirp)) != NULL) { 1458 if (dp->d_ino == 0) 1459 continue; 1460 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1461 continue; 1462 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1463 run_err("%s/%s: name too long", name, dp->d_name); 1464 continue; 1465 } 1466 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1467 vect[0] = path; 1468 source(1, vect); 1469 } 1470 (void) closedir(dirp); 1471 (void) atomicio(vwrite, remout, "E\n", 2); 1472 (void) response(); 1473 } 1474 1475 void 1476 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1477 { 1478 char *abs_src = NULL; 1479 char *abs_dst = NULL; 1480 glob_t g; 1481 char *filename, *tmp = NULL; 1482 int i, r, err = 0, dst_is_dir; 1483 struct stat st; 1484 1485 memset(&g, 0, sizeof(g)); 1486 1487 /* 1488 * Here, we need remote glob as SFTP can not depend on remote shell 1489 * expansions 1490 */ 1491 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1492 err = -1; 1493 goto out; 1494 } 1495 1496 debug3_f("copying remote %s to local %s", abs_src, dst); 1497 if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK, 1498 NULL, &g)) != 0) { 1499 if (r == GLOB_NOSPACE) 1500 error("%s: too many glob matches", src); 1501 else 1502 error("%s: %s", src, strerror(ENOENT)); 1503 err = -1; 1504 goto out; 1505 } 1506 1507 /* Did we actually get any matches back from the glob? */ 1508 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1509 /* 1510 * If nothing matched but a path returned, then it's probably 1511 * a GLOB_NOCHECK result. Check whether the unglobbed path 1512 * exists so we can give a nice error message early. 1513 */ 1514 if (do_stat(conn, g.gl_pathv[0], 1) == NULL) { 1515 error("%s: %s", src, strerror(ENOENT)); 1516 err = -1; 1517 goto out; 1518 } 1519 } 1520 1521 if ((r = stat(dst, &st)) != 0) 1522 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1523 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1524 1525 if (g.gl_matchc > 1 && !dst_is_dir) { 1526 if (r == 0) { 1527 error("Multiple files match pattern, but destination " 1528 "\"%s\" is not a directory", dst); 1529 err = -1; 1530 goto out; 1531 } 1532 debug2_f("creating destination \"%s\"", dst); 1533 if (mkdir(dst, 0777) != 0) { 1534 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1535 err = -1; 1536 goto out; 1537 } 1538 dst_is_dir = 1; 1539 } 1540 1541 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1542 tmp = xstrdup(g.gl_pathv[i]); 1543 if ((filename = basename(tmp)) == NULL) { 1544 error("basename %s: %s", tmp, strerror(errno)); 1545 err = -1; 1546 goto out; 1547 } 1548 1549 if (dst_is_dir) 1550 abs_dst = path_append(dst, filename); 1551 else 1552 abs_dst = xstrdup(dst); 1553 1554 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1555 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1556 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1557 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1558 err = -1; 1559 } else { 1560 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1561 pflag, 0, 0, 1) == -1) 1562 err = -1; 1563 } 1564 free(abs_dst); 1565 abs_dst = NULL; 1566 free(tmp); 1567 tmp = NULL; 1568 } 1569 1570 out: 1571 free(abs_src); 1572 free(tmp); 1573 globfree(&g); 1574 if (err == -1) 1575 errs = 1; 1576 } 1577 1578 1579 #define TYPE_OVERFLOW(type, val) \ 1580 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1581 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1582 (sizeof(type) != 4 && sizeof(type) != 8)) 1583 1584 void 1585 sink(int argc, char **argv, const char *src) 1586 { 1587 static BUF buffer; 1588 struct stat stb; 1589 BUF *bp; 1590 off_t i; 1591 size_t j, count; 1592 int amt, exists, first, ofd; 1593 mode_t mode, omode, mask; 1594 off_t size, statbytes; 1595 unsigned long long ull; 1596 int setimes, targisdir, wrerr; 1597 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1598 char **patterns = NULL; 1599 size_t n, npatterns = 0; 1600 struct timeval tv[2]; 1601 1602 #define atime tv[0] 1603 #define mtime tv[1] 1604 #define SCREWUP(str) { why = str; goto screwup; } 1605 1606 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1607 SCREWUP("Unexpected off_t/time_t size"); 1608 1609 setimes = targisdir = 0; 1610 mask = umask(0); 1611 if (!pflag) 1612 (void) umask(mask); 1613 if (argc != 1) { 1614 run_err("ambiguous target"); 1615 exit(1); 1616 } 1617 targ = *argv; 1618 if (targetshouldbedirectory) 1619 verifydir(targ); 1620 1621 (void) atomicio(vwrite, remout, "", 1); 1622 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1623 targisdir = 1; 1624 if (src != NULL && !iamrecursive && !Tflag) { 1625 /* 1626 * Prepare to try to restrict incoming filenames to match 1627 * the requested destination file glob. 1628 */ 1629 if (brace_expand(src, &patterns, &npatterns) != 0) 1630 fatal_f("could not expand pattern"); 1631 } 1632 for (first = 1;; first = 0) { 1633 cp = buf; 1634 if (atomicio(read, remin, cp, 1) != 1) 1635 goto done; 1636 if (*cp++ == '\n') 1637 SCREWUP("unexpected <newline>"); 1638 do { 1639 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1640 SCREWUP("lost connection"); 1641 *cp++ = ch; 1642 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1643 *cp = 0; 1644 if (verbose_mode) 1645 fmprintf(stderr, "Sink: %s", buf); 1646 1647 if (buf[0] == '\01' || buf[0] == '\02') { 1648 if (iamremote == 0) { 1649 (void) snmprintf(visbuf, sizeof(visbuf), 1650 NULL, "%s", buf + 1); 1651 (void) atomicio(vwrite, STDERR_FILENO, 1652 visbuf, strlen(visbuf)); 1653 } 1654 if (buf[0] == '\02') 1655 exit(1); 1656 ++errs; 1657 continue; 1658 } 1659 if (buf[0] == 'E') { 1660 (void) atomicio(vwrite, remout, "", 1); 1661 goto done; 1662 } 1663 if (ch == '\n') 1664 *--cp = 0; 1665 1666 cp = buf; 1667 if (*cp == 'T') { 1668 setimes++; 1669 cp++; 1670 if (!isdigit((unsigned char)*cp)) 1671 SCREWUP("mtime.sec not present"); 1672 ull = strtoull(cp, &cp, 10); 1673 if (!cp || *cp++ != ' ') 1674 SCREWUP("mtime.sec not delimited"); 1675 if (TYPE_OVERFLOW(time_t, ull)) 1676 setimes = 0; /* out of range */ 1677 mtime.tv_sec = ull; 1678 mtime.tv_usec = strtol(cp, &cp, 10); 1679 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1680 mtime.tv_usec > 999999) 1681 SCREWUP("mtime.usec not delimited"); 1682 if (!isdigit((unsigned char)*cp)) 1683 SCREWUP("atime.sec not present"); 1684 ull = strtoull(cp, &cp, 10); 1685 if (!cp || *cp++ != ' ') 1686 SCREWUP("atime.sec not delimited"); 1687 if (TYPE_OVERFLOW(time_t, ull)) 1688 setimes = 0; /* out of range */ 1689 atime.tv_sec = ull; 1690 atime.tv_usec = strtol(cp, &cp, 10); 1691 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1692 atime.tv_usec > 999999) 1693 SCREWUP("atime.usec not delimited"); 1694 (void) atomicio(vwrite, remout, "", 1); 1695 continue; 1696 } 1697 if (*cp != 'C' && *cp != 'D') { 1698 /* 1699 * Check for the case "rcp remote:foo\* local:bar". 1700 * In this case, the line "No match." can be returned 1701 * by the shell before the rcp command on the remote is 1702 * executed so the ^Aerror_message convention isn't 1703 * followed. 1704 */ 1705 if (first) { 1706 run_err("%s", cp); 1707 exit(1); 1708 } 1709 SCREWUP("expected control record"); 1710 } 1711 mode = 0; 1712 for (++cp; cp < buf + 5; cp++) { 1713 if (*cp < '0' || *cp > '7') 1714 SCREWUP("bad mode"); 1715 mode = (mode << 3) | (*cp - '0'); 1716 } 1717 if (!pflag) 1718 mode &= ~mask; 1719 if (*cp++ != ' ') 1720 SCREWUP("mode not delimited"); 1721 1722 if (!isdigit((unsigned char)*cp)) 1723 SCREWUP("size not present"); 1724 ull = strtoull(cp, &cp, 10); 1725 if (!cp || *cp++ != ' ') 1726 SCREWUP("size not delimited"); 1727 if (TYPE_OVERFLOW(off_t, ull)) 1728 SCREWUP("size out of range"); 1729 size = (off_t)ull; 1730 1731 if (*cp == '\0' || strchr(cp, '/') != NULL || 1732 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1733 run_err("error: unexpected filename: %s", cp); 1734 exit(1); 1735 } 1736 if (npatterns > 0) { 1737 for (n = 0; n < npatterns; n++) { 1738 if (strcmp(patterns[n], cp) == 0 || 1739 fnmatch(patterns[n], cp, 0) == 0) 1740 break; 1741 } 1742 if (n >= npatterns) 1743 SCREWUP("filename does not match request"); 1744 } 1745 if (targisdir) { 1746 static char *namebuf; 1747 static size_t cursize; 1748 size_t need; 1749 1750 need = strlen(targ) + strlen(cp) + 250; 1751 if (need > cursize) { 1752 free(namebuf); 1753 namebuf = xmalloc(need); 1754 cursize = need; 1755 } 1756 (void) snprintf(namebuf, need, "%s%s%s", targ, 1757 strcmp(targ, "/") ? "/" : "", cp); 1758 np = namebuf; 1759 } else 1760 np = targ; 1761 curfile = cp; 1762 exists = stat(np, &stb) == 0; 1763 if (buf[0] == 'D') { 1764 int mod_flag = pflag; 1765 if (!iamrecursive) 1766 SCREWUP("received directory without -r"); 1767 if (exists) { 1768 if (!S_ISDIR(stb.st_mode)) { 1769 errno = ENOTDIR; 1770 goto bad; 1771 } 1772 if (pflag) 1773 (void) chmod(np, mode); 1774 } else { 1775 /* Handle copying from a read-only directory */ 1776 mod_flag = 1; 1777 if (mkdir(np, mode | S_IRWXU) == -1) 1778 goto bad; 1779 } 1780 vect[0] = xstrdup(np); 1781 sink(1, vect, src); 1782 if (setimes) { 1783 setimes = 0; 1784 (void) utimes(vect[0], tv); 1785 } 1786 if (mod_flag) 1787 (void) chmod(vect[0], mode); 1788 free(vect[0]); 1789 continue; 1790 } 1791 omode = mode; 1792 mode |= S_IWUSR; 1793 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1794 bad: run_err("%s: %s", np, strerror(errno)); 1795 continue; 1796 } 1797 (void) atomicio(vwrite, remout, "", 1); 1798 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1799 (void) close(ofd); 1800 continue; 1801 } 1802 cp = bp->buf; 1803 wrerr = 0; 1804 1805 /* 1806 * NB. do not use run_err() unless immediately followed by 1807 * exit() below as it may send a spurious reply that might 1808 * desyncronise us from the peer. Use note_err() instead. 1809 */ 1810 statbytes = 0; 1811 if (showprogress) 1812 start_progress_meter(curfile, size, &statbytes); 1813 set_nonblock(remin); 1814 for (count = i = 0; i < size; i += bp->cnt) { 1815 amt = bp->cnt; 1816 if (i + amt > size) 1817 amt = size - i; 1818 count += amt; 1819 do { 1820 j = atomicio6(read, remin, cp, amt, 1821 scpio, &statbytes); 1822 if (j == 0) { 1823 run_err("%s", j != EPIPE ? 1824 strerror(errno) : 1825 "dropped connection"); 1826 exit(1); 1827 } 1828 amt -= j; 1829 cp += j; 1830 } while (amt > 0); 1831 1832 if (count == bp->cnt) { 1833 /* Keep reading so we stay sync'd up. */ 1834 if (!wrerr) { 1835 if (atomicio(vwrite, ofd, bp->buf, 1836 count) != count) { 1837 note_err("%s: %s", np, 1838 strerror(errno)); 1839 wrerr = 1; 1840 } 1841 } 1842 count = 0; 1843 cp = bp->buf; 1844 } 1845 } 1846 unset_nonblock(remin); 1847 if (count != 0 && !wrerr && 1848 atomicio(vwrite, ofd, bp->buf, count) != count) { 1849 note_err("%s: %s", np, strerror(errno)); 1850 wrerr = 1; 1851 } 1852 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1853 ftruncate(ofd, size) != 0) 1854 note_err("%s: truncate: %s", np, strerror(errno)); 1855 if (pflag) { 1856 if (exists || omode != mode) 1857 if (fchmod(ofd, omode)) { 1858 note_err("%s: set mode: %s", 1859 np, strerror(errno)); 1860 } 1861 } else { 1862 if (!exists && omode != mode) 1863 if (fchmod(ofd, omode & ~mask)) { 1864 note_err("%s: set mode: %s", 1865 np, strerror(errno)); 1866 } 1867 } 1868 if (close(ofd) == -1) 1869 note_err("%s: close: %s", np, strerror(errno)); 1870 (void) response(); 1871 if (showprogress) 1872 stop_progress_meter(); 1873 if (setimes && !wrerr) { 1874 setimes = 0; 1875 if (utimes(np, tv) == -1) { 1876 note_err("%s: set times: %s", 1877 np, strerror(errno)); 1878 } 1879 } 1880 /* If no error was noted then signal success for this file */ 1881 if (note_err(NULL) == 0) 1882 (void) atomicio(vwrite, remout, "", 1); 1883 } 1884 done: 1885 for (n = 0; n < npatterns; n++) 1886 free(patterns[n]); 1887 free(patterns); 1888 return; 1889 screwup: 1890 for (n = 0; n < npatterns; n++) 1891 free(patterns[n]); 1892 free(patterns); 1893 run_err("protocol error: %s", why); 1894 exit(1); 1895 } 1896 1897 void 1898 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1899 char *src, char *targ) 1900 { 1901 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1902 char *abs_src = NULL, *tmp = NULL; 1903 glob_t g; 1904 int i, r, targetisdir, err = 0; 1905 1906 if ((filename = basename(src)) == NULL) 1907 fatal("basename %s: %s", src, strerror(errno)); 1908 1909 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1910 (target = prepare_remote_path(to, targ)) == NULL) 1911 cleanup_exit(255); 1912 memset(&g, 0, sizeof(g)); 1913 1914 targetisdir = remote_is_dir(to, target); 1915 if (!targetisdir && targetshouldbedirectory) { 1916 error("%s: destination is not a directory", targ); 1917 err = -1; 1918 goto out; 1919 } 1920 1921 debug3_f("copying remote %s to remote %s", abs_src, target); 1922 if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK, 1923 NULL, &g)) != 0) { 1924 if (r == GLOB_NOSPACE) 1925 error("%s: too many glob matches", src); 1926 else 1927 error("%s: %s", src, strerror(ENOENT)); 1928 err = -1; 1929 goto out; 1930 } 1931 1932 /* Did we actually get any matches back from the glob? */ 1933 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1934 /* 1935 * If nothing matched but a path returned, then it's probably 1936 * a GLOB_NOCHECK result. Check whether the unglobbed path 1937 * exists so we can give a nice error message early. 1938 */ 1939 if (do_stat(from, g.gl_pathv[0], 1) == NULL) { 1940 error("%s: %s", src, strerror(ENOENT)); 1941 err = -1; 1942 goto out; 1943 } 1944 } 1945 1946 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1947 tmp = xstrdup(g.gl_pathv[i]); 1948 if ((filename = basename(tmp)) == NULL) { 1949 error("basename %s: %s", tmp, strerror(errno)); 1950 err = -1; 1951 goto out; 1952 } 1953 1954 if (targetisdir) 1955 abs_dst = path_append(target, filename); 1956 else 1957 abs_dst = xstrdup(target); 1958 1959 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1960 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1961 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 1962 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 1963 err = -1; 1964 } else { 1965 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 1966 pflag) == -1) 1967 err = -1; 1968 } 1969 free(abs_dst); 1970 abs_dst = NULL; 1971 free(tmp); 1972 tmp = NULL; 1973 } 1974 1975 out: 1976 free(abs_src); 1977 free(abs_dst); 1978 free(target); 1979 free(tmp); 1980 globfree(&g); 1981 if (err == -1) 1982 errs = 1; 1983 } 1984 1985 int 1986 response(void) 1987 { 1988 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 1989 1990 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 1991 lostconn(0); 1992 1993 cp = rbuf; 1994 switch (resp) { 1995 case 0: /* ok */ 1996 return (0); 1997 default: 1998 *cp++ = resp; 1999 /* FALLTHROUGH */ 2000 case 1: /* error, followed by error msg */ 2001 case 2: /* fatal error, "" */ 2002 do { 2003 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 2004 lostconn(0); 2005 *cp++ = ch; 2006 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 2007 2008 if (!iamremote) { 2009 cp[-1] = '\0'; 2010 (void) snmprintf(visbuf, sizeof(visbuf), 2011 NULL, "%s\n", rbuf); 2012 (void) atomicio(vwrite, STDERR_FILENO, 2013 visbuf, strlen(visbuf)); 2014 } 2015 ++errs; 2016 if (resp == 1) 2017 return (-1); 2018 exit(1); 2019 } 2020 /* NOTREACHED */ 2021 } 2022 2023 void 2024 usage(void) 2025 { 2026 (void) fprintf(stderr, 2027 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2028 " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n" 2029 " [-P port] [-S program] [-X sftp_option] source ... target\n"); 2030 exit(1); 2031 } 2032 2033 void 2034 run_err(const char *fmt,...) 2035 { 2036 static FILE *fp; 2037 va_list ap; 2038 2039 ++errs; 2040 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2041 (void) fprintf(fp, "%c", 0x01); 2042 (void) fprintf(fp, "scp: "); 2043 va_start(ap, fmt); 2044 (void) vfprintf(fp, fmt, ap); 2045 va_end(ap); 2046 (void) fprintf(fp, "\n"); 2047 (void) fflush(fp); 2048 } 2049 2050 if (!iamremote) { 2051 va_start(ap, fmt); 2052 vfmprintf(stderr, fmt, ap); 2053 va_end(ap); 2054 fprintf(stderr, "\n"); 2055 } 2056 } 2057 2058 /* 2059 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2060 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2061 * any active error at the end of the transfer. 2062 */ 2063 int 2064 note_err(const char *fmt, ...) 2065 { 2066 static char *emsg; 2067 va_list ap; 2068 2069 /* Replay any previously-noted error */ 2070 if (fmt == NULL) { 2071 if (emsg == NULL) 2072 return 0; 2073 run_err("%s", emsg); 2074 free(emsg); 2075 emsg = NULL; 2076 return -1; 2077 } 2078 2079 errs++; 2080 /* Prefer first-noted error */ 2081 if (emsg != NULL) 2082 return -1; 2083 2084 va_start(ap, fmt); 2085 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2086 va_end(ap); 2087 return -1; 2088 } 2089 2090 void 2091 verifydir(char *cp) 2092 { 2093 struct stat stb; 2094 2095 if (!stat(cp, &stb)) { 2096 if (S_ISDIR(stb.st_mode)) 2097 return; 2098 errno = ENOTDIR; 2099 } 2100 run_err("%s: %s", cp, strerror(errno)); 2101 killchild(0); 2102 } 2103 2104 int 2105 okname(char *cp0) 2106 { 2107 int c; 2108 char *cp; 2109 2110 cp = cp0; 2111 do { 2112 c = (int)*cp; 2113 if (c & 0200) 2114 goto bad; 2115 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2116 switch (c) { 2117 case '\'': 2118 case '"': 2119 case '`': 2120 case ' ': 2121 case '#': 2122 goto bad; 2123 default: 2124 break; 2125 } 2126 } 2127 } while (*++cp); 2128 return (1); 2129 2130 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2131 return (0); 2132 } 2133 2134 BUF * 2135 allocbuf(BUF *bp, int fd, int blksize) 2136 { 2137 size_t size; 2138 struct stat stb; 2139 2140 if (fstat(fd, &stb) == -1) { 2141 run_err("fstat: %s", strerror(errno)); 2142 return (0); 2143 } 2144 size = ROUNDUP(stb.st_blksize, blksize); 2145 if (size == 0) 2146 size = blksize; 2147 if (bp->cnt >= size) 2148 return (bp); 2149 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2150 bp->cnt = size; 2151 return (bp); 2152 } 2153 2154 void 2155 lostconn(int signo) 2156 { 2157 if (!iamremote) 2158 (void)write(STDERR_FILENO, "lost connection\n", 16); 2159 if (signo) 2160 _exit(1); 2161 else 2162 exit(1); 2163 } 2164 2165 void 2166 cleanup_exit(int i) 2167 { 2168 if (remin > 0) 2169 close(remin); 2170 if (remout > 0) 2171 close(remout); 2172 if (remin2 > 0) 2173 close(remin2); 2174 if (remout2 > 0) 2175 close(remout2); 2176 if (do_cmd_pid > 0) 2177 waitpid(do_cmd_pid, NULL, 0); 2178 if (do_cmd_pid2 > 0) 2179 waitpid(do_cmd_pid2, NULL, 0); 2180 exit(i); 2181 } 2182