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 "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 #ifdef HAVE_UTIL_H 110 # include <util.h> 111 #endif 112 #include <locale.h> 113 #include <pwd.h> 114 #include <signal.h> 115 #include <stdarg.h> 116 #ifdef HAVE_STDINT_H 117 # include <stdint.h> 118 #endif 119 #include <stdio.h> 120 #include <stdlib.h> 121 #include <string.h> 122 #include <time.h> 123 #include <unistd.h> 124 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS) 125 #include <vis.h> 126 #endif 127 128 #include "xmalloc.h" 129 #include "ssh.h" 130 #include "atomicio.h" 131 #include "pathnames.h" 132 #include "log.h" 133 #include "misc.h" 134 #include "progressmeter.h" 135 #include "utf8.h" 136 #include "sftp.h" 137 138 #include "sftp-common.h" 139 #include "sftp-client.h" 140 141 extern char *__progname; 142 143 #define COPY_BUFLEN 16384 144 145 int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *); 146 int do_cmd2(char *, char *, int, char *, int, int); 147 148 /* Struct for addargs */ 149 arglist args; 150 arglist remote_remote_args; 151 152 /* Bandwidth limit */ 153 long long limit_kbps = 0; 154 struct bwlimit bwlimit; 155 156 /* Name of current file being transferred. */ 157 char *curfile; 158 159 /* This is set to non-zero to enable verbose mode. */ 160 int verbose_mode = 0; 161 LogLevel log_level = SYSLOG_LEVEL_INFO; 162 163 /* This is set to zero if the progressmeter is not desired. */ 164 int showprogress = 1; 165 166 /* 167 * This is set to non-zero if remote-remote copy should be piped 168 * through this process. 169 */ 170 int throughlocal = 1; 171 172 /* Non-standard port to use for the ssh connection or -1. */ 173 int sshport = -1; 174 175 /* This is the program to execute for the secured connection. ("ssh" or -S) */ 176 char *ssh_program = _PATH_SSH_PROGRAM; 177 178 /* This is used to store the pid of ssh_program */ 179 pid_t do_cmd_pid = -1; 180 pid_t do_cmd_pid2 = -1; 181 182 /* SFTP copy parameters */ 183 size_t sftp_copy_buflen; 184 size_t sftp_nrequests; 185 186 /* Needed for sftp */ 187 volatile sig_atomic_t interrupted = 0; 188 189 int remote_glob(struct sftp_conn *, const char *, int, 190 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ 191 192 static void 193 killchild(int signo) 194 { 195 if (do_cmd_pid > 1) { 196 kill(do_cmd_pid, signo ? signo : SIGTERM); 197 waitpid(do_cmd_pid, NULL, 0); 198 } 199 if (do_cmd_pid2 > 1) { 200 kill(do_cmd_pid2, signo ? signo : SIGTERM); 201 waitpid(do_cmd_pid2, NULL, 0); 202 } 203 204 if (signo) 205 _exit(1); 206 exit(1); 207 } 208 209 static void 210 suspone(int pid, int signo) 211 { 212 int status; 213 214 if (pid > 1) { 215 kill(pid, signo); 216 while (waitpid(pid, &status, WUNTRACED) == -1 && 217 errno == EINTR) 218 ; 219 } 220 } 221 222 static void 223 suspchild(int signo) 224 { 225 suspone(do_cmd_pid, signo); 226 suspone(do_cmd_pid2, signo); 227 kill(getpid(), SIGSTOP); 228 } 229 230 static int 231 do_local_cmd(arglist *a) 232 { 233 u_int i; 234 int status; 235 pid_t pid; 236 237 if (a->num == 0) 238 fatal("do_local_cmd: no arguments"); 239 240 if (verbose_mode) { 241 fprintf(stderr, "Executing:"); 242 for (i = 0; i < a->num; i++) 243 fmprintf(stderr, " %s", a->list[i]); 244 fprintf(stderr, "\n"); 245 } 246 if ((pid = fork()) == -1) 247 fatal("do_local_cmd: fork: %s", strerror(errno)); 248 249 if (pid == 0) { 250 execvp(a->list[0], a->list); 251 perror(a->list[0]); 252 exit(1); 253 } 254 255 do_cmd_pid = pid; 256 ssh_signal(SIGTERM, killchild); 257 ssh_signal(SIGINT, killchild); 258 ssh_signal(SIGHUP, killchild); 259 260 while (waitpid(pid, &status, 0) == -1) 261 if (errno != EINTR) 262 fatal("do_local_cmd: waitpid: %s", strerror(errno)); 263 264 do_cmd_pid = -1; 265 266 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 267 return (-1); 268 269 return (0); 270 } 271 272 /* 273 * This function executes the given command as the specified user on the 274 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This 275 * assigns the input and output file descriptors on success. 276 */ 277 278 int 279 do_cmd(char *program, char *host, char *remuser, int port, int subsystem, 280 char *cmd, int *fdin, int *fdout, pid_t *pid) 281 { 282 #ifdef USE_PIPES 283 int pin[2], pout[2]; 284 #else 285 int sv[2]; 286 #endif 287 288 if (verbose_mode) 289 fmprintf(stderr, 290 "Executing: program %s host %s, user %s, command %s\n", 291 program, host, 292 remuser ? remuser : "(unspecified)", cmd); 293 294 if (port == -1) 295 port = sshport; 296 297 #ifdef USE_PIPES 298 if (pipe(pin) == -1 || pipe(pout) == -1) 299 fatal("pipe: %s", strerror(errno)); 300 #else 301 /* Create a socket pair for communicating with ssh. */ 302 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) 303 fatal("socketpair: %s", strerror(errno)); 304 #endif 305 306 ssh_signal(SIGTSTP, suspchild); 307 ssh_signal(SIGTTIN, suspchild); 308 ssh_signal(SIGTTOU, suspchild); 309 310 /* Fork a child to execute the command on the remote host using ssh. */ 311 *pid = fork(); 312 switch (*pid) { 313 case -1: 314 fatal("fork: %s", strerror(errno)); 315 case 0: 316 /* Child. */ 317 #ifdef USE_PIPES 318 if (dup2(pin[0], STDIN_FILENO) == -1 || 319 dup2(pout[1], STDOUT_FILENO) == -1) { 320 error("dup2: %s", strerror(errno)); 321 _exit(1); 322 } 323 close(pin[0]); 324 close(pin[1]); 325 close(pout[0]); 326 close(pout[1]); 327 #else 328 if (dup2(sv[0], STDIN_FILENO) == -1 || 329 dup2(sv[0], STDOUT_FILENO) == -1) { 330 error("dup2: %s", strerror(errno)); 331 _exit(1); 332 } 333 close(sv[0]); 334 close(sv[1]); 335 #endif 336 replacearg(&args, 0, "%s", program); 337 if (port != -1) { 338 addargs(&args, "-p"); 339 addargs(&args, "%d", port); 340 } 341 if (remuser != NULL) { 342 addargs(&args, "-l"); 343 addargs(&args, "%s", remuser); 344 } 345 if (subsystem) 346 addargs(&args, "-s"); 347 addargs(&args, "--"); 348 addargs(&args, "%s", host); 349 addargs(&args, "%s", cmd); 350 351 execvp(program, args.list); 352 perror(program); 353 _exit(1); 354 default: 355 /* Parent. Close the other side, and return the local side. */ 356 #ifdef USE_PIPES 357 close(pin[0]); 358 close(pout[1]); 359 *fdout = pin[1]; 360 *fdin = pout[0]; 361 #else 362 close(sv[0]); 363 *fdin = sv[1]; 364 *fdout = sv[1]; 365 #endif 366 ssh_signal(SIGTERM, killchild); 367 ssh_signal(SIGINT, killchild); 368 ssh_signal(SIGHUP, killchild); 369 return 0; 370 } 371 } 372 373 /* 374 * This function executes a command similar to do_cmd(), but expects the 375 * input and output descriptors to be setup by a previous call to do_cmd(). 376 * This way the input and output of two commands can be connected. 377 */ 378 int 379 do_cmd2(char *host, char *remuser, int port, char *cmd, 380 int fdin, int fdout) 381 { 382 int status; 383 pid_t pid; 384 385 if (verbose_mode) 386 fmprintf(stderr, 387 "Executing: 2nd program %s host %s, user %s, command %s\n", 388 ssh_program, host, 389 remuser ? remuser : "(unspecified)", cmd); 390 391 if (port == -1) 392 port = sshport; 393 394 /* Fork a child to execute the command on the remote host using ssh. */ 395 pid = fork(); 396 if (pid == 0) { 397 dup2(fdin, 0); 398 dup2(fdout, 1); 399 400 replacearg(&args, 0, "%s", ssh_program); 401 if (port != -1) { 402 addargs(&args, "-p"); 403 addargs(&args, "%d", port); 404 } 405 if (remuser != NULL) { 406 addargs(&args, "-l"); 407 addargs(&args, "%s", remuser); 408 } 409 addargs(&args, "-oBatchMode=yes"); 410 addargs(&args, "--"); 411 addargs(&args, "%s", host); 412 addargs(&args, "%s", cmd); 413 414 execvp(ssh_program, args.list); 415 perror(ssh_program); 416 exit(1); 417 } else if (pid == -1) { 418 fatal("fork: %s", strerror(errno)); 419 } 420 while (waitpid(pid, &status, 0) == -1) 421 if (errno != EINTR) 422 fatal("do_cmd2: waitpid: %s", strerror(errno)); 423 return 0; 424 } 425 426 typedef struct { 427 size_t cnt; 428 char *buf; 429 } BUF; 430 431 BUF *allocbuf(BUF *, int, int); 432 void lostconn(int); 433 int okname(char *); 434 void run_err(const char *,...) 435 __attribute__((__format__ (printf, 1, 2))) 436 __attribute__((__nonnull__ (1))); 437 int note_err(const char *,...) 438 __attribute__((__format__ (printf, 1, 2))); 439 void verifydir(char *); 440 441 struct passwd *pwd; 442 uid_t userid; 443 int errs, remin, remout, remin2, remout2; 444 int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 445 446 #define CMDNEEDS 64 447 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 448 449 enum scp_mode_e { 450 MODE_SCP, 451 MODE_SFTP 452 }; 453 454 int response(void); 455 void rsource(char *, struct stat *); 456 void sink(int, char *[], const char *); 457 void source(int, char *[]); 458 void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 459 void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 460 void usage(void); 461 462 void source_sftp(int, char *, char *, struct sftp_conn *); 463 void sink_sftp(int, char *, const char *, struct sftp_conn *); 464 void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 465 char *, char *); 466 467 int 468 main(int argc, char **argv) 469 { 470 int ch, fflag, tflag, status, r, n; 471 char **newargv, *argv0; 472 const char *errstr; 473 extern char *optarg; 474 extern int optind; 475 enum scp_mode_e mode = MODE_SFTP; 476 char *sftp_direct = NULL; 477 long long llv; 478 479 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 480 sanitise_stdfd(); 481 482 msetlocale(); 483 484 /* Copy argv, because we modify it */ 485 argv0 = argv[0]; 486 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 487 for (n = 0; n < argc; n++) 488 newargv[n] = xstrdup(argv[n]); 489 argv = newargv; 490 491 __progname = ssh_get_progname(argv[0]); 492 493 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 494 495 memset(&args, '\0', sizeof(args)); 496 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 497 args.list = remote_remote_args.list = NULL; 498 addargs(&args, "%s", ssh_program); 499 addargs(&args, "-x"); 500 addargs(&args, "-oPermitLocalCommand=no"); 501 addargs(&args, "-oClearAllForwardings=yes"); 502 addargs(&args, "-oRemoteCommand=none"); 503 addargs(&args, "-oRequestTTY=no"); 504 505 fflag = Tflag = tflag = 0; 506 while ((ch = getopt(argc, argv, 507 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) { 508 switch (ch) { 509 /* User-visible flags. */ 510 case '1': 511 fatal("SSH protocol v.1 is no longer supported"); 512 break; 513 case '2': 514 /* Ignored */ 515 break; 516 case 'A': 517 case '4': 518 case '6': 519 case 'C': 520 addargs(&args, "-%c", ch); 521 addargs(&remote_remote_args, "-%c", ch); 522 break; 523 case 'D': 524 sftp_direct = optarg; 525 break; 526 case '3': 527 throughlocal = 1; 528 break; 529 case 'R': 530 throughlocal = 0; 531 break; 532 case 'o': 533 case 'c': 534 case 'i': 535 case 'F': 536 case 'J': 537 addargs(&remote_remote_args, "-%c", ch); 538 addargs(&remote_remote_args, "%s", optarg); 539 addargs(&args, "-%c", ch); 540 addargs(&args, "%s", optarg); 541 break; 542 case 'O': 543 mode = MODE_SCP; 544 break; 545 case 's': 546 mode = MODE_SFTP; 547 break; 548 case 'P': 549 sshport = a2port(optarg); 550 if (sshport <= 0) 551 fatal("bad port \"%s\"\n", optarg); 552 break; 553 case 'B': 554 addargs(&remote_remote_args, "-oBatchmode=yes"); 555 addargs(&args, "-oBatchmode=yes"); 556 break; 557 case 'l': 558 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 559 &errstr); 560 if (errstr != NULL) 561 usage(); 562 limit_kbps *= 1024; /* kbps */ 563 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 564 break; 565 case 'p': 566 pflag = 1; 567 break; 568 case 'r': 569 iamrecursive = 1; 570 break; 571 case 'S': 572 ssh_program = xstrdup(optarg); 573 break; 574 case 'v': 575 addargs(&args, "-v"); 576 addargs(&remote_remote_args, "-v"); 577 if (verbose_mode == 0) 578 log_level = SYSLOG_LEVEL_DEBUG1; 579 else if (log_level < SYSLOG_LEVEL_DEBUG3) 580 log_level++; 581 verbose_mode = 1; 582 break; 583 case 'q': 584 addargs(&args, "-q"); 585 addargs(&remote_remote_args, "-q"); 586 showprogress = 0; 587 break; 588 case 'X': 589 /* Please keep in sync with sftp.c -X */ 590 if (strncmp(optarg, "buffer=", 7) == 0) { 591 r = scan_scaled(optarg + 7, &llv); 592 if (r == 0 && (llv <= 0 || llv > 256 * 1024)) { 593 r = -1; 594 errno = EINVAL; 595 } 596 if (r == -1) { 597 fatal("Invalid buffer size \"%s\": %s", 598 optarg + 7, strerror(errno)); 599 } 600 sftp_copy_buflen = (size_t)llv; 601 } else if (strncmp(optarg, "nrequests=", 10) == 0) { 602 llv = strtonum(optarg + 10, 1, 256 * 1024, 603 &errstr); 604 if (errstr != NULL) { 605 fatal("Invalid number of requests " 606 "\"%s\": %s", optarg + 10, errstr); 607 } 608 sftp_nrequests = (size_t)llv; 609 } else { 610 fatal("Invalid -X option"); 611 } 612 break; 613 614 /* Server options. */ 615 case 'd': 616 targetshouldbedirectory = 1; 617 break; 618 case 'f': /* "from" */ 619 iamremote = 1; 620 fflag = 1; 621 break; 622 case 't': /* "to" */ 623 iamremote = 1; 624 tflag = 1; 625 #ifdef HAVE_CYGWIN 626 setmode(0, O_BINARY); 627 #endif 628 break; 629 case 'T': 630 Tflag = 1; 631 break; 632 default: 633 usage(); 634 } 635 } 636 argc -= optind; 637 argv += optind; 638 639 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 640 641 /* Do this last because we want the user to be able to override it */ 642 addargs(&args, "-oForwardAgent=no"); 643 644 if (iamremote) 645 mode = MODE_SCP; 646 647 if ((pwd = getpwuid(userid = getuid())) == NULL) 648 fatal("unknown user %u", (u_int) userid); 649 650 if (!isatty(STDOUT_FILENO)) 651 showprogress = 0; 652 653 if (pflag) { 654 /* Cannot pledge: -p allows setuid/setgid files... */ 655 } else { 656 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 657 NULL) == -1) { 658 perror("pledge"); 659 exit(1); 660 } 661 } 662 663 remin = STDIN_FILENO; 664 remout = STDOUT_FILENO; 665 666 if (fflag) { 667 /* Follow "protocol", send data. */ 668 (void) response(); 669 source(argc, argv); 670 exit(errs != 0); 671 } 672 if (tflag) { 673 /* Receive data. */ 674 sink(argc, argv, NULL); 675 exit(errs != 0); 676 } 677 if (argc < 2) 678 usage(); 679 if (argc > 2) 680 targetshouldbedirectory = 1; 681 682 remin = remout = -1; 683 do_cmd_pid = -1; 684 /* Command to be executed on remote system using "ssh". */ 685 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 686 verbose_mode ? " -v" : "", 687 iamrecursive ? " -r" : "", pflag ? " -p" : "", 688 targetshouldbedirectory ? " -d" : ""); 689 690 (void) ssh_signal(SIGPIPE, lostconn); 691 692 if (colon(argv[argc - 1])) /* Dest is remote host. */ 693 toremote(argc, argv, mode, sftp_direct); 694 else { 695 if (targetshouldbedirectory) 696 verifydir(argv[argc - 1]); 697 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 698 } 699 /* 700 * Finally check the exit status of the ssh process, if one was forked 701 * and no error has occurred yet 702 */ 703 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 704 if (remin != -1) 705 (void) close(remin); 706 if (remout != -1) 707 (void) close(remout); 708 if (waitpid(do_cmd_pid, &status, 0) == -1) 709 errs = 1; 710 else { 711 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 712 errs = 1; 713 } 714 } 715 exit(errs != 0); 716 } 717 718 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 719 static int 720 scpio(void *_cnt, size_t s) 721 { 722 off_t *cnt = (off_t *)_cnt; 723 724 *cnt += s; 725 refresh_progress_meter(0); 726 if (limit_kbps > 0) 727 bandwidth_limit(&bwlimit, s); 728 return 0; 729 } 730 731 static int 732 do_times(int fd, int verb, const struct stat *sb) 733 { 734 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 735 char buf[(20 + 7 + 2) * 2 + 2]; 736 737 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 738 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 739 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 740 if (verb) { 741 fprintf(stderr, "File mtime %lld atime %lld\n", 742 (long long)sb->st_mtime, (long long)sb->st_atime); 743 fprintf(stderr, "Sending file timestamps: %s", buf); 744 } 745 (void) atomicio(vwrite, fd, buf, strlen(buf)); 746 return (response()); 747 } 748 749 static int 750 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 751 char **pathp) 752 { 753 int r; 754 755 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 756 if (r == 0 && *pathp == NULL) 757 *pathp = xstrdup("."); 758 return r; 759 } 760 761 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 762 static int 763 append(char *cp, char ***ap, size_t *np) 764 { 765 char **tmp; 766 767 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 768 return -1; 769 tmp[(*np)] = cp; 770 (*np)++; 771 *ap = tmp; 772 return 0; 773 } 774 775 /* 776 * Finds the start and end of the first brace pair in the pattern. 777 * returns 0 on success or -1 for invalid patterns. 778 */ 779 static int 780 find_brace(const char *pattern, int *startp, int *endp) 781 { 782 int i; 783 int in_bracket, brace_level; 784 785 *startp = *endp = -1; 786 in_bracket = brace_level = 0; 787 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 788 switch (pattern[i]) { 789 case '\\': 790 /* skip next character */ 791 if (pattern[i + 1] != '\0') 792 i++; 793 break; 794 case '[': 795 in_bracket = 1; 796 break; 797 case ']': 798 in_bracket = 0; 799 break; 800 case '{': 801 if (in_bracket) 802 break; 803 if (pattern[i + 1] == '}') { 804 /* Protect a single {}, for find(1), like csh */ 805 i++; /* skip */ 806 break; 807 } 808 if (*startp == -1) 809 *startp = i; 810 brace_level++; 811 break; 812 case '}': 813 if (in_bracket) 814 break; 815 if (*startp < 0) { 816 /* Unbalanced brace */ 817 return -1; 818 } 819 if (--brace_level <= 0) 820 *endp = i; 821 break; 822 } 823 } 824 /* unbalanced brackets/braces */ 825 if (*endp < 0 && (*startp >= 0 || in_bracket)) 826 return -1; 827 return 0; 828 } 829 830 /* 831 * Assembles and records a successfully-expanded pattern, returns -1 on 832 * alloc failure. 833 */ 834 static int 835 emit_expansion(const char *pattern, int brace_start, int brace_end, 836 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 837 { 838 char *cp; 839 int o = 0, tail_len = strlen(pattern + brace_end + 1); 840 841 if ((cp = malloc(brace_start + (sel_end - sel_start) + 842 tail_len + 1)) == NULL) 843 return -1; 844 845 /* Pattern before initial brace */ 846 if (brace_start > 0) { 847 memcpy(cp, pattern, brace_start); 848 o = brace_start; 849 } 850 /* Current braced selection */ 851 if (sel_end - sel_start > 0) { 852 memcpy(cp + o, pattern + sel_start, 853 sel_end - sel_start); 854 o += sel_end - sel_start; 855 } 856 /* Remainder of pattern after closing brace */ 857 if (tail_len > 0) { 858 memcpy(cp + o, pattern + brace_end + 1, tail_len); 859 o += tail_len; 860 } 861 cp[o] = '\0'; 862 if (append(cp, patternsp, npatternsp) != 0) { 863 free(cp); 864 return -1; 865 } 866 return 0; 867 } 868 869 /* 870 * Expand the first encountered brace in pattern, appending the expanded 871 * patterns it yielded to the *patternsp array. 872 * 873 * Returns 0 on success or -1 on allocation failure. 874 * 875 * Signals whether expansion was performed via *expanded and whether 876 * pattern was invalid via *invalid. 877 */ 878 static int 879 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 880 int *expanded, int *invalid) 881 { 882 int i; 883 int in_bracket, brace_start, brace_end, brace_level; 884 int sel_start, sel_end; 885 886 *invalid = *expanded = 0; 887 888 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 889 *invalid = 1; 890 return 0; 891 } else if (brace_start == -1) 892 return 0; 893 894 in_bracket = brace_level = 0; 895 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 896 switch (pattern[i]) { 897 case '{': 898 if (in_bracket) 899 break; 900 brace_level++; 901 break; 902 case '}': 903 if (in_bracket) 904 break; 905 brace_level--; 906 break; 907 case '[': 908 in_bracket = 1; 909 break; 910 case ']': 911 in_bracket = 0; 912 break; 913 case '\\': 914 if (i < brace_end - 1) 915 i++; /* skip */ 916 break; 917 } 918 if (pattern[i] == ',' || i == brace_end - 1) { 919 if (in_bracket || brace_level > 0) 920 continue; 921 /* End of a selection, emit an expanded pattern */ 922 923 /* Adjust end index for last selection */ 924 sel_end = (i == brace_end - 1) ? brace_end : i; 925 if (emit_expansion(pattern, brace_start, brace_end, 926 sel_start, sel_end, patternsp, npatternsp) != 0) 927 return -1; 928 /* move on to the next selection */ 929 sel_start = i + 1; 930 continue; 931 } 932 } 933 if (in_bracket || brace_level > 0) { 934 *invalid = 1; 935 return 0; 936 } 937 /* success */ 938 *expanded = 1; 939 return 0; 940 } 941 942 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 943 static int 944 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 945 { 946 char *cp, *cp2, **active = NULL, **done = NULL; 947 size_t i, nactive = 0, ndone = 0; 948 int ret = -1, invalid = 0, expanded = 0; 949 950 *patternsp = NULL; 951 *npatternsp = 0; 952 953 /* Start the worklist with the original pattern */ 954 if ((cp = strdup(pattern)) == NULL) 955 return -1; 956 if (append(cp, &active, &nactive) != 0) { 957 free(cp); 958 return -1; 959 } 960 while (nactive > 0) { 961 cp = active[nactive - 1]; 962 nactive--; 963 if (brace_expand_one(cp, &active, &nactive, 964 &expanded, &invalid) == -1) { 965 free(cp); 966 goto fail; 967 } 968 if (invalid) 969 fatal_f("invalid brace pattern \"%s\"", cp); 970 if (expanded) { 971 /* 972 * Current entry expanded to new entries on the 973 * active list; discard the progenitor pattern. 974 */ 975 free(cp); 976 continue; 977 } 978 /* 979 * Pattern did not expand; append the finename component to 980 * the completed list 981 */ 982 if ((cp2 = strrchr(cp, '/')) != NULL) 983 *cp2++ = '\0'; 984 else 985 cp2 = cp; 986 if (append(xstrdup(cp2), &done, &ndone) != 0) { 987 free(cp); 988 goto fail; 989 } 990 free(cp); 991 } 992 /* success */ 993 *patternsp = done; 994 *npatternsp = ndone; 995 done = NULL; 996 ndone = 0; 997 ret = 0; 998 fail: 999 for (i = 0; i < nactive; i++) 1000 free(active[i]); 1001 free(active); 1002 for (i = 0; i < ndone; i++) 1003 free(done[i]); 1004 free(done); 1005 return ret; 1006 } 1007 1008 static struct sftp_conn * 1009 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 1010 int *reminp, int *remoutp, int *pidp) 1011 { 1012 if (sftp_direct == NULL) { 1013 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 1014 reminp, remoutp, pidp) < 0) 1015 return NULL; 1016 1017 } else { 1018 freeargs(&args); 1019 addargs(&args, "sftp-server"); 1020 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 1021 reminp, remoutp, pidp) < 0) 1022 return NULL; 1023 } 1024 return do_init(*reminp, *remoutp, 1025 sftp_copy_buflen, sftp_nrequests, limit_kbps); 1026 } 1027 1028 void 1029 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1030 { 1031 char *suser = NULL, *host = NULL, *src = NULL; 1032 char *bp, *tuser, *thost, *targ; 1033 int sport = -1, tport = -1; 1034 struct sftp_conn *conn = NULL, *conn2 = NULL; 1035 arglist alist; 1036 int i, r, status; 1037 u_int j; 1038 1039 memset(&alist, '\0', sizeof(alist)); 1040 alist.list = NULL; 1041 1042 /* Parse target */ 1043 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 1044 if (r == -1) { 1045 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 1046 ++errs; 1047 goto out; 1048 } 1049 if (r != 0) { 1050 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 1051 &targ) == -1) { 1052 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 1053 ++errs; 1054 goto out; 1055 } 1056 } 1057 1058 /* Parse source files */ 1059 for (i = 0; i < argc - 1; i++) { 1060 free(suser); 1061 free(host); 1062 free(src); 1063 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1064 if (r == -1) { 1065 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1066 ++errs; 1067 continue; 1068 } 1069 if (r != 0) { 1070 parse_user_host_path(argv[i], &suser, &host, &src); 1071 } 1072 if (suser != NULL && !okname(suser)) { 1073 ++errs; 1074 continue; 1075 } 1076 if (host && throughlocal) { /* extended remote to remote */ 1077 if (mode == MODE_SFTP) { 1078 if (remin == -1) { 1079 /* Connect to dest now */ 1080 conn = do_sftp_connect(thost, tuser, 1081 tport, sftp_direct, 1082 &remin, &remout, &do_cmd_pid); 1083 if (conn == NULL) { 1084 fatal("Unable to open " 1085 "destination connection"); 1086 } 1087 debug3_f("origin in %d out %d pid %ld", 1088 remin, remout, (long)do_cmd_pid); 1089 } 1090 /* 1091 * XXX remember suser/host/sport and only 1092 * reconnect if they change between arguments. 1093 * would save reconnections for cases like 1094 * scp -3 hosta:/foo hosta:/bar hostb: 1095 */ 1096 /* Connect to origin now */ 1097 conn2 = do_sftp_connect(host, suser, 1098 sport, sftp_direct, 1099 &remin2, &remout2, &do_cmd_pid2); 1100 if (conn2 == NULL) { 1101 fatal("Unable to open " 1102 "source connection"); 1103 } 1104 debug3_f("destination in %d out %d pid %ld", 1105 remin2, remout2, (long)do_cmd_pid2); 1106 throughlocal_sftp(conn2, conn, src, targ); 1107 (void) close(remin2); 1108 (void) close(remout2); 1109 remin2 = remout2 = -1; 1110 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1111 ++errs; 1112 else if (!WIFEXITED(status) || 1113 WEXITSTATUS(status) != 0) 1114 ++errs; 1115 do_cmd_pid2 = -1; 1116 continue; 1117 } else { 1118 xasprintf(&bp, "%s -f %s%s", cmd, 1119 *src == '-' ? "-- " : "", src); 1120 if (do_cmd(ssh_program, host, suser, sport, 0, 1121 bp, &remin, &remout, &do_cmd_pid) < 0) 1122 exit(1); 1123 free(bp); 1124 xasprintf(&bp, "%s -t %s%s", cmd, 1125 *targ == '-' ? "-- " : "", targ); 1126 if (do_cmd2(thost, tuser, tport, bp, 1127 remin, remout) < 0) 1128 exit(1); 1129 free(bp); 1130 (void) close(remin); 1131 (void) close(remout); 1132 remin = remout = -1; 1133 } 1134 } else if (host) { /* standard remote to remote */ 1135 /* 1136 * Second remote user is passed to first remote side 1137 * via scp command-line. Ensure it contains no obvious 1138 * shell characters. 1139 */ 1140 if (tuser != NULL && !okname(tuser)) { 1141 ++errs; 1142 continue; 1143 } 1144 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1145 /* This would require the remote support URIs */ 1146 fatal("target port not supported with two " 1147 "remote hosts and the -R option"); 1148 } 1149 1150 freeargs(&alist); 1151 addargs(&alist, "%s", ssh_program); 1152 addargs(&alist, "-x"); 1153 addargs(&alist, "-oClearAllForwardings=yes"); 1154 addargs(&alist, "-n"); 1155 for (j = 0; j < remote_remote_args.num; j++) { 1156 addargs(&alist, "%s", 1157 remote_remote_args.list[j]); 1158 } 1159 1160 if (sport != -1) { 1161 addargs(&alist, "-p"); 1162 addargs(&alist, "%d", sport); 1163 } 1164 if (suser) { 1165 addargs(&alist, "-l"); 1166 addargs(&alist, "%s", suser); 1167 } 1168 addargs(&alist, "--"); 1169 addargs(&alist, "%s", host); 1170 addargs(&alist, "%s", cmd); 1171 addargs(&alist, "%s", src); 1172 addargs(&alist, "%s%s%s:%s", 1173 tuser ? tuser : "", tuser ? "@" : "", 1174 thost, targ); 1175 if (do_local_cmd(&alist) != 0) 1176 errs = 1; 1177 } else { /* local to remote */ 1178 if (mode == MODE_SFTP) { 1179 if (remin == -1) { 1180 /* Connect to remote now */ 1181 conn = do_sftp_connect(thost, tuser, 1182 tport, sftp_direct, 1183 &remin, &remout, &do_cmd_pid); 1184 if (conn == NULL) { 1185 fatal("Unable to open sftp " 1186 "connection"); 1187 } 1188 } 1189 1190 /* The protocol */ 1191 source_sftp(1, argv[i], targ, conn); 1192 continue; 1193 } 1194 /* SCP */ 1195 if (remin == -1) { 1196 xasprintf(&bp, "%s -t %s%s", cmd, 1197 *targ == '-' ? "-- " : "", targ); 1198 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1199 bp, &remin, &remout, &do_cmd_pid) < 0) 1200 exit(1); 1201 if (response() < 0) 1202 exit(1); 1203 free(bp); 1204 } 1205 source(1, argv + i); 1206 } 1207 } 1208 out: 1209 if (mode == MODE_SFTP) 1210 free(conn); 1211 free(tuser); 1212 free(thost); 1213 free(targ); 1214 free(suser); 1215 free(host); 1216 free(src); 1217 } 1218 1219 void 1220 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1221 { 1222 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1223 arglist alist; 1224 struct sftp_conn *conn = NULL; 1225 int i, r, sport = -1; 1226 1227 memset(&alist, '\0', sizeof(alist)); 1228 alist.list = NULL; 1229 1230 for (i = 0; i < argc - 1; i++) { 1231 free(suser); 1232 free(host); 1233 free(src); 1234 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1235 if (r == -1) { 1236 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1237 ++errs; 1238 continue; 1239 } 1240 if (r != 0) 1241 parse_user_host_path(argv[i], &suser, &host, &src); 1242 if (suser != NULL && !okname(suser)) { 1243 ++errs; 1244 continue; 1245 } 1246 if (!host) { /* Local to local. */ 1247 freeargs(&alist); 1248 addargs(&alist, "%s", _PATH_CP); 1249 if (iamrecursive) 1250 addargs(&alist, "-r"); 1251 if (pflag) 1252 addargs(&alist, "-p"); 1253 addargs(&alist, "--"); 1254 addargs(&alist, "%s", argv[i]); 1255 addargs(&alist, "%s", argv[argc-1]); 1256 if (do_local_cmd(&alist)) 1257 ++errs; 1258 continue; 1259 } 1260 /* Remote to local. */ 1261 if (mode == MODE_SFTP) { 1262 conn = do_sftp_connect(host, suser, sport, 1263 sftp_direct, &remin, &remout, &do_cmd_pid); 1264 if (conn == NULL) { 1265 error("sftp connection failed"); 1266 ++errs; 1267 continue; 1268 } 1269 1270 /* The protocol */ 1271 sink_sftp(1, argv[argc - 1], src, conn); 1272 1273 free(conn); 1274 (void) close(remin); 1275 (void) close(remout); 1276 remin = remout = -1; 1277 continue; 1278 } 1279 /* SCP */ 1280 xasprintf(&bp, "%s -f %s%s", 1281 cmd, *src == '-' ? "-- " : "", src); 1282 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1283 &remin, &remout, &do_cmd_pid) < 0) { 1284 free(bp); 1285 ++errs; 1286 continue; 1287 } 1288 free(bp); 1289 sink(1, argv + argc - 1, src); 1290 (void) close(remin); 1291 remin = remout = -1; 1292 } 1293 free(suser); 1294 free(host); 1295 free(src); 1296 } 1297 1298 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1299 static char * 1300 prepare_remote_path(struct sftp_conn *conn, const char *path) 1301 { 1302 size_t nslash; 1303 1304 /* Handle ~ prefixed paths */ 1305 if (*path == '\0' || strcmp(path, "~") == 0) 1306 return xstrdup("."); 1307 if (*path != '~') 1308 return xstrdup(path); 1309 if (strncmp(path, "~/", 2) == 0) { 1310 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1311 return xstrdup("."); 1312 return xstrdup(path + 2 + nslash); 1313 } 1314 if (can_expand_path(conn)) 1315 return do_expand_path(conn, path); 1316 /* No protocol extension */ 1317 error("server expand-path extension is required " 1318 "for ~user paths in SFTP mode"); 1319 return NULL; 1320 } 1321 1322 void 1323 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1324 { 1325 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1326 int src_is_dir, target_is_dir; 1327 Attrib a; 1328 struct stat st; 1329 1330 memset(&a, '\0', sizeof(a)); 1331 if (stat(src, &st) != 0) 1332 fatal("stat local \"%s\": %s", src, strerror(errno)); 1333 src_is_dir = S_ISDIR(st.st_mode); 1334 if ((filename = basename(src)) == NULL) 1335 fatal("basename \"%s\": %s", src, strerror(errno)); 1336 1337 /* 1338 * No need to glob here - the local shell already took care of 1339 * the expansions 1340 */ 1341 if ((target = prepare_remote_path(conn, targ)) == NULL) 1342 cleanup_exit(255); 1343 target_is_dir = remote_is_dir(conn, target); 1344 if (targetshouldbedirectory && !target_is_dir) { 1345 debug("target directory \"%s\" does not exist", target); 1346 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1347 a.perm = st.st_mode | 0700; /* ensure writable */ 1348 if (do_mkdir(conn, target, &a, 1) != 0) 1349 cleanup_exit(255); /* error already logged */ 1350 target_is_dir = 1; 1351 } 1352 if (target_is_dir) 1353 abs_dst = path_append(target, filename); 1354 else { 1355 abs_dst = target; 1356 target = NULL; 1357 } 1358 debug3_f("copying local %s to remote %s", src, abs_dst); 1359 1360 if (src_is_dir && iamrecursive) { 1361 if (upload_dir(conn, src, abs_dst, pflag, 1362 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1363 error("failed to upload directory %s to %s", src, targ); 1364 errs = 1; 1365 } 1366 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1367 error("failed to upload file %s to %s", src, targ); 1368 errs = 1; 1369 } 1370 1371 free(abs_dst); 1372 free(target); 1373 } 1374 1375 void 1376 source(int argc, char **argv) 1377 { 1378 struct stat stb; 1379 static BUF buffer; 1380 BUF *bp; 1381 off_t i, statbytes; 1382 size_t amt, nr; 1383 int fd = -1, haderr, indx; 1384 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1385 int len; 1386 1387 for (indx = 0; indx < argc; ++indx) { 1388 name = argv[indx]; 1389 statbytes = 0; 1390 len = strlen(name); 1391 while (len > 1 && name[len-1] == '/') 1392 name[--len] = '\0'; 1393 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1394 goto syserr; 1395 if (strchr(name, '\n') != NULL) { 1396 strnvis(encname, name, sizeof(encname), VIS_NL); 1397 name = encname; 1398 } 1399 if (fstat(fd, &stb) == -1) { 1400 syserr: run_err("%s: %s", name, strerror(errno)); 1401 goto next; 1402 } 1403 if (stb.st_size < 0) { 1404 run_err("%s: %s", name, "Negative file size"); 1405 goto next; 1406 } 1407 unset_nonblock(fd); 1408 switch (stb.st_mode & S_IFMT) { 1409 case S_IFREG: 1410 break; 1411 case S_IFDIR: 1412 if (iamrecursive) { 1413 rsource(name, &stb); 1414 goto next; 1415 } 1416 /* FALLTHROUGH */ 1417 default: 1418 run_err("%s: not a regular file", name); 1419 goto next; 1420 } 1421 if ((last = strrchr(name, '/')) == NULL) 1422 last = name; 1423 else 1424 ++last; 1425 curfile = last; 1426 if (pflag) { 1427 if (do_times(remout, verbose_mode, &stb) < 0) 1428 goto next; 1429 } 1430 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1431 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1432 (u_int) (stb.st_mode & FILEMODEMASK), 1433 (long long)stb.st_size, last); 1434 if (verbose_mode) 1435 fmprintf(stderr, "Sending file modes: %s", buf); 1436 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1437 if (response() < 0) 1438 goto next; 1439 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1440 next: if (fd != -1) { 1441 (void) close(fd); 1442 fd = -1; 1443 } 1444 continue; 1445 } 1446 if (showprogress) 1447 start_progress_meter(curfile, stb.st_size, &statbytes); 1448 set_nonblock(remout); 1449 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1450 amt = bp->cnt; 1451 if (i + (off_t)amt > stb.st_size) 1452 amt = stb.st_size - i; 1453 if (!haderr) { 1454 if ((nr = atomicio(read, fd, 1455 bp->buf, amt)) != amt) { 1456 haderr = errno; 1457 memset(bp->buf + nr, 0, amt - nr); 1458 } 1459 } 1460 /* Keep writing after error to retain sync */ 1461 if (haderr) { 1462 (void)atomicio(vwrite, remout, bp->buf, amt); 1463 memset(bp->buf, 0, amt); 1464 continue; 1465 } 1466 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1467 &statbytes) != amt) 1468 haderr = errno; 1469 } 1470 unset_nonblock(remout); 1471 1472 if (fd != -1) { 1473 if (close(fd) == -1 && !haderr) 1474 haderr = errno; 1475 fd = -1; 1476 } 1477 if (!haderr) 1478 (void) atomicio(vwrite, remout, "", 1); 1479 else 1480 run_err("%s: %s", name, strerror(haderr)); 1481 (void) response(); 1482 if (showprogress) 1483 stop_progress_meter(); 1484 } 1485 } 1486 1487 void 1488 rsource(char *name, struct stat *statp) 1489 { 1490 DIR *dirp; 1491 struct dirent *dp; 1492 char *last, *vect[1], path[PATH_MAX]; 1493 1494 if (!(dirp = opendir(name))) { 1495 run_err("%s: %s", name, strerror(errno)); 1496 return; 1497 } 1498 last = strrchr(name, '/'); 1499 if (last == NULL) 1500 last = name; 1501 else 1502 last++; 1503 if (pflag) { 1504 if (do_times(remout, verbose_mode, statp) < 0) { 1505 closedir(dirp); 1506 return; 1507 } 1508 } 1509 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1510 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1511 if (verbose_mode) 1512 fmprintf(stderr, "Entering directory: %s", path); 1513 (void) atomicio(vwrite, remout, path, strlen(path)); 1514 if (response() < 0) { 1515 closedir(dirp); 1516 return; 1517 } 1518 while ((dp = readdir(dirp)) != NULL) { 1519 if (dp->d_ino == 0) 1520 continue; 1521 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1522 continue; 1523 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1524 run_err("%s/%s: name too long", name, dp->d_name); 1525 continue; 1526 } 1527 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1528 vect[0] = path; 1529 source(1, vect); 1530 } 1531 (void) closedir(dirp); 1532 (void) atomicio(vwrite, remout, "E\n", 2); 1533 (void) response(); 1534 } 1535 1536 void 1537 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1538 { 1539 char *abs_src = NULL; 1540 char *abs_dst = NULL; 1541 glob_t g; 1542 char *filename, *tmp = NULL; 1543 int i, r, err = 0, dst_is_dir; 1544 struct stat st; 1545 1546 memset(&g, 0, sizeof(g)); 1547 1548 /* 1549 * Here, we need remote glob as SFTP can not depend on remote shell 1550 * expansions 1551 */ 1552 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1553 err = -1; 1554 goto out; 1555 } 1556 1557 debug3_f("copying remote %s to local %s", abs_src, dst); 1558 if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK, 1559 NULL, &g)) != 0) { 1560 if (r == GLOB_NOSPACE) 1561 error("%s: too many glob matches", src); 1562 else 1563 error("%s: %s", src, strerror(ENOENT)); 1564 err = -1; 1565 goto out; 1566 } 1567 1568 /* Did we actually get any matches back from the glob? */ 1569 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1570 /* 1571 * If nothing matched but a path returned, then it's probably 1572 * a GLOB_NOCHECK result. Check whether the unglobbed path 1573 * exists so we can give a nice error message early. 1574 */ 1575 if (do_stat(conn, g.gl_pathv[0], 1) == NULL) { 1576 error("%s: %s", src, strerror(ENOENT)); 1577 err = -1; 1578 goto out; 1579 } 1580 } 1581 1582 if ((r = stat(dst, &st)) != 0) 1583 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1584 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1585 1586 if (g.gl_matchc > 1 && !dst_is_dir) { 1587 if (r == 0) { 1588 error("Multiple files match pattern, but destination " 1589 "\"%s\" is not a directory", dst); 1590 err = -1; 1591 goto out; 1592 } 1593 debug2_f("creating destination \"%s\"", dst); 1594 if (mkdir(dst, 0777) != 0) { 1595 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1596 err = -1; 1597 goto out; 1598 } 1599 dst_is_dir = 1; 1600 } 1601 1602 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1603 tmp = xstrdup(g.gl_pathv[i]); 1604 if ((filename = basename(tmp)) == NULL) { 1605 error("basename %s: %s", tmp, strerror(errno)); 1606 err = -1; 1607 goto out; 1608 } 1609 1610 if (dst_is_dir) 1611 abs_dst = path_append(dst, filename); 1612 else 1613 abs_dst = xstrdup(dst); 1614 1615 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1616 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1617 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1618 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1619 err = -1; 1620 } else { 1621 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1622 pflag, 0, 0, 1) == -1) 1623 err = -1; 1624 } 1625 free(abs_dst); 1626 abs_dst = NULL; 1627 free(tmp); 1628 tmp = NULL; 1629 } 1630 1631 out: 1632 free(abs_src); 1633 free(tmp); 1634 globfree(&g); 1635 if (err == -1) 1636 errs = 1; 1637 } 1638 1639 1640 #define TYPE_OVERFLOW(type, val) \ 1641 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1642 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1643 (sizeof(type) != 4 && sizeof(type) != 8)) 1644 1645 void 1646 sink(int argc, char **argv, const char *src) 1647 { 1648 static BUF buffer; 1649 struct stat stb; 1650 BUF *bp; 1651 off_t i; 1652 size_t j, count; 1653 int amt, exists, first, ofd; 1654 mode_t mode, omode, mask; 1655 off_t size, statbytes; 1656 unsigned long long ull; 1657 int setimes, targisdir, wrerr; 1658 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1659 char **patterns = NULL; 1660 size_t n, npatterns = 0; 1661 struct timeval tv[2]; 1662 1663 #define atime tv[0] 1664 #define mtime tv[1] 1665 #define SCREWUP(str) { why = str; goto screwup; } 1666 1667 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1668 SCREWUP("Unexpected off_t/time_t size"); 1669 1670 setimes = targisdir = 0; 1671 mask = umask(0); 1672 if (!pflag) 1673 (void) umask(mask); 1674 if (argc != 1) { 1675 run_err("ambiguous target"); 1676 exit(1); 1677 } 1678 targ = *argv; 1679 if (targetshouldbedirectory) 1680 verifydir(targ); 1681 1682 (void) atomicio(vwrite, remout, "", 1); 1683 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1684 targisdir = 1; 1685 if (src != NULL && !iamrecursive && !Tflag) { 1686 /* 1687 * Prepare to try to restrict incoming filenames to match 1688 * the requested destination file glob. 1689 */ 1690 if (brace_expand(src, &patterns, &npatterns) != 0) 1691 fatal_f("could not expand pattern"); 1692 } 1693 for (first = 1;; first = 0) { 1694 cp = buf; 1695 if (atomicio(read, remin, cp, 1) != 1) 1696 goto done; 1697 if (*cp++ == '\n') 1698 SCREWUP("unexpected <newline>"); 1699 do { 1700 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1701 SCREWUP("lost connection"); 1702 *cp++ = ch; 1703 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1704 *cp = 0; 1705 if (verbose_mode) 1706 fmprintf(stderr, "Sink: %s", buf); 1707 1708 if (buf[0] == '\01' || buf[0] == '\02') { 1709 if (iamremote == 0) { 1710 (void) snmprintf(visbuf, sizeof(visbuf), 1711 NULL, "%s", buf + 1); 1712 (void) atomicio(vwrite, STDERR_FILENO, 1713 visbuf, strlen(visbuf)); 1714 } 1715 if (buf[0] == '\02') 1716 exit(1); 1717 ++errs; 1718 continue; 1719 } 1720 if (buf[0] == 'E') { 1721 (void) atomicio(vwrite, remout, "", 1); 1722 goto done; 1723 } 1724 if (ch == '\n') 1725 *--cp = 0; 1726 1727 cp = buf; 1728 if (*cp == 'T') { 1729 setimes++; 1730 cp++; 1731 if (!isdigit((unsigned char)*cp)) 1732 SCREWUP("mtime.sec not present"); 1733 ull = strtoull(cp, &cp, 10); 1734 if (!cp || *cp++ != ' ') 1735 SCREWUP("mtime.sec not delimited"); 1736 if (TYPE_OVERFLOW(time_t, ull)) 1737 setimes = 0; /* out of range */ 1738 mtime.tv_sec = ull; 1739 mtime.tv_usec = strtol(cp, &cp, 10); 1740 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1741 mtime.tv_usec > 999999) 1742 SCREWUP("mtime.usec not delimited"); 1743 if (!isdigit((unsigned char)*cp)) 1744 SCREWUP("atime.sec not present"); 1745 ull = strtoull(cp, &cp, 10); 1746 if (!cp || *cp++ != ' ') 1747 SCREWUP("atime.sec not delimited"); 1748 if (TYPE_OVERFLOW(time_t, ull)) 1749 setimes = 0; /* out of range */ 1750 atime.tv_sec = ull; 1751 atime.tv_usec = strtol(cp, &cp, 10); 1752 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1753 atime.tv_usec > 999999) 1754 SCREWUP("atime.usec not delimited"); 1755 (void) atomicio(vwrite, remout, "", 1); 1756 continue; 1757 } 1758 if (*cp != 'C' && *cp != 'D') { 1759 /* 1760 * Check for the case "rcp remote:foo\* local:bar". 1761 * In this case, the line "No match." can be returned 1762 * by the shell before the rcp command on the remote is 1763 * executed so the ^Aerror_message convention isn't 1764 * followed. 1765 */ 1766 if (first) { 1767 run_err("%s", cp); 1768 exit(1); 1769 } 1770 SCREWUP("expected control record"); 1771 } 1772 mode = 0; 1773 for (++cp; cp < buf + 5; cp++) { 1774 if (*cp < '0' || *cp > '7') 1775 SCREWUP("bad mode"); 1776 mode = (mode << 3) | (*cp - '0'); 1777 } 1778 if (!pflag) 1779 mode &= ~mask; 1780 if (*cp++ != ' ') 1781 SCREWUP("mode not delimited"); 1782 1783 if (!isdigit((unsigned char)*cp)) 1784 SCREWUP("size not present"); 1785 ull = strtoull(cp, &cp, 10); 1786 if (!cp || *cp++ != ' ') 1787 SCREWUP("size not delimited"); 1788 if (TYPE_OVERFLOW(off_t, ull)) 1789 SCREWUP("size out of range"); 1790 size = (off_t)ull; 1791 1792 if (*cp == '\0' || strchr(cp, '/') != NULL || 1793 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1794 run_err("error: unexpected filename: %s", cp); 1795 exit(1); 1796 } 1797 if (npatterns > 0) { 1798 for (n = 0; n < npatterns; n++) { 1799 if (strcmp(patterns[n], cp) == 0 || 1800 fnmatch(patterns[n], cp, 0) == 0) 1801 break; 1802 } 1803 if (n >= npatterns) 1804 SCREWUP("filename does not match request"); 1805 } 1806 if (targisdir) { 1807 static char *namebuf; 1808 static size_t cursize; 1809 size_t need; 1810 1811 need = strlen(targ) + strlen(cp) + 250; 1812 if (need > cursize) { 1813 free(namebuf); 1814 namebuf = xmalloc(need); 1815 cursize = need; 1816 } 1817 (void) snprintf(namebuf, need, "%s%s%s", targ, 1818 strcmp(targ, "/") ? "/" : "", cp); 1819 np = namebuf; 1820 } else 1821 np = targ; 1822 curfile = cp; 1823 exists = stat(np, &stb) == 0; 1824 if (buf[0] == 'D') { 1825 int mod_flag = pflag; 1826 if (!iamrecursive) 1827 SCREWUP("received directory without -r"); 1828 if (exists) { 1829 if (!S_ISDIR(stb.st_mode)) { 1830 errno = ENOTDIR; 1831 goto bad; 1832 } 1833 if (pflag) 1834 (void) chmod(np, mode); 1835 } else { 1836 /* Handle copying from a read-only directory */ 1837 mod_flag = 1; 1838 if (mkdir(np, mode | S_IRWXU) == -1) 1839 goto bad; 1840 } 1841 vect[0] = xstrdup(np); 1842 sink(1, vect, src); 1843 if (setimes) { 1844 setimes = 0; 1845 (void) utimes(vect[0], tv); 1846 } 1847 if (mod_flag) 1848 (void) chmod(vect[0], mode); 1849 free(vect[0]); 1850 continue; 1851 } 1852 omode = mode; 1853 mode |= S_IWUSR; 1854 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1855 bad: run_err("%s: %s", np, strerror(errno)); 1856 continue; 1857 } 1858 (void) atomicio(vwrite, remout, "", 1); 1859 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1860 (void) close(ofd); 1861 continue; 1862 } 1863 cp = bp->buf; 1864 wrerr = 0; 1865 1866 /* 1867 * NB. do not use run_err() unless immediately followed by 1868 * exit() below as it may send a spurious reply that might 1869 * desyncronise us from the peer. Use note_err() instead. 1870 */ 1871 statbytes = 0; 1872 if (showprogress) 1873 start_progress_meter(curfile, size, &statbytes); 1874 set_nonblock(remin); 1875 for (count = i = 0; i < size; i += bp->cnt) { 1876 amt = bp->cnt; 1877 if (i + amt > size) 1878 amt = size - i; 1879 count += amt; 1880 do { 1881 j = atomicio6(read, remin, cp, amt, 1882 scpio, &statbytes); 1883 if (j == 0) { 1884 run_err("%s", j != EPIPE ? 1885 strerror(errno) : 1886 "dropped connection"); 1887 exit(1); 1888 } 1889 amt -= j; 1890 cp += j; 1891 } while (amt > 0); 1892 1893 if (count == bp->cnt) { 1894 /* Keep reading so we stay sync'd up. */ 1895 if (!wrerr) { 1896 if (atomicio(vwrite, ofd, bp->buf, 1897 count) != count) { 1898 note_err("%s: %s", np, 1899 strerror(errno)); 1900 wrerr = 1; 1901 } 1902 } 1903 count = 0; 1904 cp = bp->buf; 1905 } 1906 } 1907 unset_nonblock(remin); 1908 if (count != 0 && !wrerr && 1909 atomicio(vwrite, ofd, bp->buf, count) != count) { 1910 note_err("%s: %s", np, strerror(errno)); 1911 wrerr = 1; 1912 } 1913 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1914 ftruncate(ofd, size) != 0) 1915 note_err("%s: truncate: %s", np, strerror(errno)); 1916 if (pflag) { 1917 if (exists || omode != mode) 1918 #ifdef HAVE_FCHMOD 1919 if (fchmod(ofd, omode)) { 1920 #else /* HAVE_FCHMOD */ 1921 if (chmod(np, omode)) { 1922 #endif /* HAVE_FCHMOD */ 1923 note_err("%s: set mode: %s", 1924 np, strerror(errno)); 1925 } 1926 } else { 1927 if (!exists && omode != mode) 1928 #ifdef HAVE_FCHMOD 1929 if (fchmod(ofd, omode & ~mask)) { 1930 #else /* HAVE_FCHMOD */ 1931 if (chmod(np, omode & ~mask)) { 1932 #endif /* HAVE_FCHMOD */ 1933 note_err("%s: set mode: %s", 1934 np, strerror(errno)); 1935 } 1936 } 1937 if (close(ofd) == -1) 1938 note_err("%s: close: %s", np, strerror(errno)); 1939 (void) response(); 1940 if (showprogress) 1941 stop_progress_meter(); 1942 if (setimes && !wrerr) { 1943 setimes = 0; 1944 if (utimes(np, tv) == -1) { 1945 note_err("%s: set times: %s", 1946 np, strerror(errno)); 1947 } 1948 } 1949 /* If no error was noted then signal success for this file */ 1950 if (note_err(NULL) == 0) 1951 (void) atomicio(vwrite, remout, "", 1); 1952 } 1953 done: 1954 for (n = 0; n < npatterns; n++) 1955 free(patterns[n]); 1956 free(patterns); 1957 return; 1958 screwup: 1959 for (n = 0; n < npatterns; n++) 1960 free(patterns[n]); 1961 free(patterns); 1962 run_err("protocol error: %s", why); 1963 exit(1); 1964 } 1965 1966 void 1967 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1968 char *src, char *targ) 1969 { 1970 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1971 char *abs_src = NULL, *tmp = NULL; 1972 glob_t g; 1973 int i, r, targetisdir, err = 0; 1974 1975 if ((filename = basename(src)) == NULL) 1976 fatal("basename %s: %s", src, strerror(errno)); 1977 1978 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1979 (target = prepare_remote_path(to, targ)) == NULL) 1980 cleanup_exit(255); 1981 memset(&g, 0, sizeof(g)); 1982 1983 targetisdir = remote_is_dir(to, target); 1984 if (!targetisdir && targetshouldbedirectory) { 1985 error("%s: destination is not a directory", targ); 1986 err = -1; 1987 goto out; 1988 } 1989 1990 debug3_f("copying remote %s to remote %s", abs_src, target); 1991 if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK, 1992 NULL, &g)) != 0) { 1993 if (r == GLOB_NOSPACE) 1994 error("%s: too many glob matches", src); 1995 else 1996 error("%s: %s", src, strerror(ENOENT)); 1997 err = -1; 1998 goto out; 1999 } 2000 2001 /* Did we actually get any matches back from the glob? */ 2002 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 2003 /* 2004 * If nothing matched but a path returned, then it's probably 2005 * a GLOB_NOCHECK result. Check whether the unglobbed path 2006 * exists so we can give a nice error message early. 2007 */ 2008 if (do_stat(from, g.gl_pathv[0], 1) == NULL) { 2009 error("%s: %s", src, strerror(ENOENT)); 2010 err = -1; 2011 goto out; 2012 } 2013 } 2014 2015 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 2016 tmp = xstrdup(g.gl_pathv[i]); 2017 if ((filename = basename(tmp)) == NULL) { 2018 error("basename %s: %s", tmp, strerror(errno)); 2019 err = -1; 2020 goto out; 2021 } 2022 2023 if (targetisdir) 2024 abs_dst = path_append(target, filename); 2025 else 2026 abs_dst = xstrdup(target); 2027 2028 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 2029 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 2030 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 2031 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 2032 err = -1; 2033 } else { 2034 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 2035 pflag) == -1) 2036 err = -1; 2037 } 2038 free(abs_dst); 2039 abs_dst = NULL; 2040 free(tmp); 2041 tmp = NULL; 2042 } 2043 2044 out: 2045 free(abs_src); 2046 free(abs_dst); 2047 free(target); 2048 free(tmp); 2049 globfree(&g); 2050 if (err == -1) 2051 errs = 1; 2052 } 2053 2054 int 2055 response(void) 2056 { 2057 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 2058 2059 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 2060 lostconn(0); 2061 2062 cp = rbuf; 2063 switch (resp) { 2064 case 0: /* ok */ 2065 return (0); 2066 default: 2067 *cp++ = resp; 2068 /* FALLTHROUGH */ 2069 case 1: /* error, followed by error msg */ 2070 case 2: /* fatal error, "" */ 2071 do { 2072 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 2073 lostconn(0); 2074 *cp++ = ch; 2075 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 2076 2077 if (!iamremote) { 2078 cp[-1] = '\0'; 2079 (void) snmprintf(visbuf, sizeof(visbuf), 2080 NULL, "%s\n", rbuf); 2081 (void) atomicio(vwrite, STDERR_FILENO, 2082 visbuf, strlen(visbuf)); 2083 } 2084 ++errs; 2085 if (resp == 1) 2086 return (-1); 2087 exit(1); 2088 } 2089 /* NOTREACHED */ 2090 } 2091 2092 void 2093 usage(void) 2094 { 2095 (void) fprintf(stderr, 2096 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2097 " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n" 2098 " [-P port] [-S program] [-X sftp_option] source ... target\n"); 2099 exit(1); 2100 } 2101 2102 void 2103 run_err(const char *fmt,...) 2104 { 2105 static FILE *fp; 2106 va_list ap; 2107 2108 ++errs; 2109 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2110 (void) fprintf(fp, "%c", 0x01); 2111 (void) fprintf(fp, "scp: "); 2112 va_start(ap, fmt); 2113 (void) vfprintf(fp, fmt, ap); 2114 va_end(ap); 2115 (void) fprintf(fp, "\n"); 2116 (void) fflush(fp); 2117 } 2118 2119 if (!iamremote) { 2120 va_start(ap, fmt); 2121 vfmprintf(stderr, fmt, ap); 2122 va_end(ap); 2123 fprintf(stderr, "\n"); 2124 } 2125 } 2126 2127 /* 2128 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2129 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2130 * any active error at the end of the transfer. 2131 */ 2132 int 2133 note_err(const char *fmt, ...) 2134 { 2135 static char *emsg; 2136 va_list ap; 2137 2138 /* Replay any previously-noted error */ 2139 if (fmt == NULL) { 2140 if (emsg == NULL) 2141 return 0; 2142 run_err("%s", emsg); 2143 free(emsg); 2144 emsg = NULL; 2145 return -1; 2146 } 2147 2148 errs++; 2149 /* Prefer first-noted error */ 2150 if (emsg != NULL) 2151 return -1; 2152 2153 va_start(ap, fmt); 2154 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2155 va_end(ap); 2156 return -1; 2157 } 2158 2159 void 2160 verifydir(char *cp) 2161 { 2162 struct stat stb; 2163 2164 if (!stat(cp, &stb)) { 2165 if (S_ISDIR(stb.st_mode)) 2166 return; 2167 errno = ENOTDIR; 2168 } 2169 run_err("%s: %s", cp, strerror(errno)); 2170 killchild(0); 2171 } 2172 2173 int 2174 okname(char *cp0) 2175 { 2176 int c; 2177 char *cp; 2178 2179 cp = cp0; 2180 do { 2181 c = (int)*cp; 2182 if (c & 0200) 2183 goto bad; 2184 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2185 switch (c) { 2186 case '\'': 2187 case '"': 2188 case '`': 2189 case ' ': 2190 case '#': 2191 goto bad; 2192 default: 2193 break; 2194 } 2195 } 2196 } while (*++cp); 2197 return (1); 2198 2199 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2200 return (0); 2201 } 2202 2203 BUF * 2204 allocbuf(BUF *bp, int fd, int blksize) 2205 { 2206 size_t size; 2207 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE 2208 struct stat stb; 2209 2210 if (fstat(fd, &stb) == -1) { 2211 run_err("fstat: %s", strerror(errno)); 2212 return (0); 2213 } 2214 size = ROUNDUP(stb.st_blksize, blksize); 2215 if (size == 0) 2216 size = blksize; 2217 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2218 size = blksize; 2219 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2220 if (bp->cnt >= size) 2221 return (bp); 2222 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2223 bp->cnt = size; 2224 return (bp); 2225 } 2226 2227 void 2228 lostconn(int signo) 2229 { 2230 if (!iamremote) 2231 (void)write(STDERR_FILENO, "lost connection\n", 16); 2232 if (signo) 2233 _exit(1); 2234 else 2235 exit(1); 2236 } 2237 2238 void 2239 cleanup_exit(int i) 2240 { 2241 if (remin > 0) 2242 close(remin); 2243 if (remout > 0) 2244 close(remout); 2245 if (remin2 > 0) 2246 close(remin2); 2247 if (remout2 > 0) 2248 close(remout2); 2249 if (do_cmd_pid > 0) 2250 waitpid(do_cmd_pid, NULL, 0); 2251 if (do_cmd_pid2 > 0) 2252 waitpid(do_cmd_pid2, NULL, 0); 2253 exit(i); 2254 } 2255