1 /* $OpenBSD: scp.c,v 1.253 2023/03/03 03:12:24 dtucker 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 if (dup2(fdin, 0) == -1) 398 perror("dup2"); 399 if (dup2(fdout, 1) == -1) 400 perror("dup2"); 401 402 replacearg(&args, 0, "%s", ssh_program); 403 if (port != -1) { 404 addargs(&args, "-p"); 405 addargs(&args, "%d", port); 406 } 407 if (remuser != NULL) { 408 addargs(&args, "-l"); 409 addargs(&args, "%s", remuser); 410 } 411 addargs(&args, "-oBatchMode=yes"); 412 addargs(&args, "--"); 413 addargs(&args, "%s", host); 414 addargs(&args, "%s", cmd); 415 416 execvp(ssh_program, args.list); 417 perror(ssh_program); 418 exit(1); 419 } else if (pid == -1) { 420 fatal("fork: %s", strerror(errno)); 421 } 422 while (waitpid(pid, &status, 0) == -1) 423 if (errno != EINTR) 424 fatal("do_cmd2: waitpid: %s", strerror(errno)); 425 return 0; 426 } 427 428 typedef struct { 429 size_t cnt; 430 char *buf; 431 } BUF; 432 433 BUF *allocbuf(BUF *, int, int); 434 void lostconn(int); 435 int okname(char *); 436 void run_err(const char *,...) 437 __attribute__((__format__ (printf, 1, 2))) 438 __attribute__((__nonnull__ (1))); 439 int note_err(const char *,...) 440 __attribute__((__format__ (printf, 1, 2))); 441 void verifydir(char *); 442 443 struct passwd *pwd; 444 uid_t userid; 445 int errs, remin, remout, remin2, remout2; 446 int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 447 448 #define CMDNEEDS 64 449 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 450 451 enum scp_mode_e { 452 MODE_SCP, 453 MODE_SFTP 454 }; 455 456 int response(void); 457 void rsource(char *, struct stat *); 458 void sink(int, char *[], const char *); 459 void source(int, char *[]); 460 void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 461 void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 462 void usage(void); 463 464 void source_sftp(int, char *, char *, struct sftp_conn *); 465 void sink_sftp(int, char *, const char *, struct sftp_conn *); 466 void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 467 char *, char *); 468 469 int 470 main(int argc, char **argv) 471 { 472 int ch, fflag, tflag, status, r, n; 473 char **newargv, *argv0; 474 const char *errstr; 475 extern char *optarg; 476 extern int optind; 477 enum scp_mode_e mode = MODE_SFTP; 478 char *sftp_direct = NULL; 479 long long llv; 480 481 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 482 sanitise_stdfd(); 483 484 msetlocale(); 485 486 /* Copy argv, because we modify it */ 487 argv0 = argv[0]; 488 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 489 for (n = 0; n < argc; n++) 490 newargv[n] = xstrdup(argv[n]); 491 argv = newargv; 492 493 __progname = ssh_get_progname(argv[0]); 494 495 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 496 497 memset(&args, '\0', sizeof(args)); 498 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 499 args.list = remote_remote_args.list = NULL; 500 addargs(&args, "%s", ssh_program); 501 addargs(&args, "-x"); 502 addargs(&args, "-oPermitLocalCommand=no"); 503 addargs(&args, "-oClearAllForwardings=yes"); 504 addargs(&args, "-oRemoteCommand=none"); 505 addargs(&args, "-oRequestTTY=no"); 506 507 fflag = Tflag = tflag = 0; 508 while ((ch = getopt(argc, argv, 509 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) { 510 switch (ch) { 511 /* User-visible flags. */ 512 case '1': 513 fatal("SSH protocol v.1 is no longer supported"); 514 break; 515 case '2': 516 /* Ignored */ 517 break; 518 case 'A': 519 case '4': 520 case '6': 521 case 'C': 522 addargs(&args, "-%c", ch); 523 addargs(&remote_remote_args, "-%c", ch); 524 break; 525 case 'D': 526 sftp_direct = optarg; 527 break; 528 case '3': 529 throughlocal = 1; 530 break; 531 case 'R': 532 throughlocal = 0; 533 break; 534 case 'o': 535 case 'c': 536 case 'i': 537 case 'F': 538 case 'J': 539 addargs(&remote_remote_args, "-%c", ch); 540 addargs(&remote_remote_args, "%s", optarg); 541 addargs(&args, "-%c", ch); 542 addargs(&args, "%s", optarg); 543 break; 544 case 'O': 545 mode = MODE_SCP; 546 break; 547 case 's': 548 mode = MODE_SFTP; 549 break; 550 case 'P': 551 sshport = a2port(optarg); 552 if (sshport <= 0) 553 fatal("bad port \"%s\"\n", optarg); 554 break; 555 case 'B': 556 addargs(&remote_remote_args, "-oBatchmode=yes"); 557 addargs(&args, "-oBatchmode=yes"); 558 break; 559 case 'l': 560 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 561 &errstr); 562 if (errstr != NULL) 563 usage(); 564 limit_kbps *= 1024; /* kbps */ 565 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 566 break; 567 case 'p': 568 pflag = 1; 569 break; 570 case 'r': 571 iamrecursive = 1; 572 break; 573 case 'S': 574 ssh_program = xstrdup(optarg); 575 break; 576 case 'v': 577 addargs(&args, "-v"); 578 addargs(&remote_remote_args, "-v"); 579 if (verbose_mode == 0) 580 log_level = SYSLOG_LEVEL_DEBUG1; 581 else if (log_level < SYSLOG_LEVEL_DEBUG3) 582 log_level++; 583 verbose_mode = 1; 584 break; 585 case 'q': 586 addargs(&args, "-q"); 587 addargs(&remote_remote_args, "-q"); 588 showprogress = 0; 589 break; 590 case 'X': 591 /* Please keep in sync with sftp.c -X */ 592 if (strncmp(optarg, "buffer=", 7) == 0) { 593 r = scan_scaled(optarg + 7, &llv); 594 if (r == 0 && (llv <= 0 || llv > 256 * 1024)) { 595 r = -1; 596 errno = EINVAL; 597 } 598 if (r == -1) { 599 fatal("Invalid buffer size \"%s\": %s", 600 optarg + 7, strerror(errno)); 601 } 602 sftp_copy_buflen = (size_t)llv; 603 } else if (strncmp(optarg, "nrequests=", 10) == 0) { 604 llv = strtonum(optarg + 10, 1, 256 * 1024, 605 &errstr); 606 if (errstr != NULL) { 607 fatal("Invalid number of requests " 608 "\"%s\": %s", optarg + 10, errstr); 609 } 610 sftp_nrequests = (size_t)llv; 611 } else { 612 fatal("Invalid -X option"); 613 } 614 break; 615 616 /* Server options. */ 617 case 'd': 618 targetshouldbedirectory = 1; 619 break; 620 case 'f': /* "from" */ 621 iamremote = 1; 622 fflag = 1; 623 break; 624 case 't': /* "to" */ 625 iamremote = 1; 626 tflag = 1; 627 #ifdef HAVE_CYGWIN 628 setmode(0, O_BINARY); 629 #endif 630 break; 631 case 'T': 632 Tflag = 1; 633 break; 634 default: 635 usage(); 636 } 637 } 638 argc -= optind; 639 argv += optind; 640 641 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 642 643 /* Do this last because we want the user to be able to override it */ 644 addargs(&args, "-oForwardAgent=no"); 645 646 if (iamremote) 647 mode = MODE_SCP; 648 649 if ((pwd = getpwuid(userid = getuid())) == NULL) 650 fatal("unknown user %u", (u_int) userid); 651 652 if (!isatty(STDOUT_FILENO)) 653 showprogress = 0; 654 655 if (pflag) { 656 /* Cannot pledge: -p allows setuid/setgid files... */ 657 } else { 658 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 659 NULL) == -1) { 660 perror("pledge"); 661 exit(1); 662 } 663 } 664 665 remin = STDIN_FILENO; 666 remout = STDOUT_FILENO; 667 668 if (fflag) { 669 /* Follow "protocol", send data. */ 670 (void) response(); 671 source(argc, argv); 672 exit(errs != 0); 673 } 674 if (tflag) { 675 /* Receive data. */ 676 sink(argc, argv, NULL); 677 exit(errs != 0); 678 } 679 if (argc < 2) 680 usage(); 681 if (argc > 2) 682 targetshouldbedirectory = 1; 683 684 remin = remout = -1; 685 do_cmd_pid = -1; 686 /* Command to be executed on remote system using "ssh". */ 687 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 688 verbose_mode ? " -v" : "", 689 iamrecursive ? " -r" : "", pflag ? " -p" : "", 690 targetshouldbedirectory ? " -d" : ""); 691 692 (void) ssh_signal(SIGPIPE, lostconn); 693 694 if (colon(argv[argc - 1])) /* Dest is remote host. */ 695 toremote(argc, argv, mode, sftp_direct); 696 else { 697 if (targetshouldbedirectory) 698 verifydir(argv[argc - 1]); 699 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 700 } 701 /* 702 * Finally check the exit status of the ssh process, if one was forked 703 * and no error has occurred yet 704 */ 705 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 706 if (remin != -1) 707 (void) close(remin); 708 if (remout != -1) 709 (void) close(remout); 710 if (waitpid(do_cmd_pid, &status, 0) == -1) 711 errs = 1; 712 else { 713 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 714 errs = 1; 715 } 716 } 717 exit(errs != 0); 718 } 719 720 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 721 static int 722 scpio(void *_cnt, size_t s) 723 { 724 off_t *cnt = (off_t *)_cnt; 725 726 *cnt += s; 727 refresh_progress_meter(0); 728 if (limit_kbps > 0) 729 bandwidth_limit(&bwlimit, s); 730 return 0; 731 } 732 733 static int 734 do_times(int fd, int verb, const struct stat *sb) 735 { 736 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 737 char buf[(20 + 7 + 2) * 2 + 2]; 738 739 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 740 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 741 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 742 if (verb) { 743 fprintf(stderr, "File mtime %lld atime %lld\n", 744 (long long)sb->st_mtime, (long long)sb->st_atime); 745 fprintf(stderr, "Sending file timestamps: %s", buf); 746 } 747 (void) atomicio(vwrite, fd, buf, strlen(buf)); 748 return (response()); 749 } 750 751 static int 752 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 753 char **pathp) 754 { 755 int r; 756 757 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 758 if (r == 0 && *pathp == NULL) 759 *pathp = xstrdup("."); 760 return r; 761 } 762 763 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 764 static int 765 append(char *cp, char ***ap, size_t *np) 766 { 767 char **tmp; 768 769 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 770 return -1; 771 tmp[(*np)] = cp; 772 (*np)++; 773 *ap = tmp; 774 return 0; 775 } 776 777 /* 778 * Finds the start and end of the first brace pair in the pattern. 779 * returns 0 on success or -1 for invalid patterns. 780 */ 781 static int 782 find_brace(const char *pattern, int *startp, int *endp) 783 { 784 int i; 785 int in_bracket, brace_level; 786 787 *startp = *endp = -1; 788 in_bracket = brace_level = 0; 789 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 790 switch (pattern[i]) { 791 case '\\': 792 /* skip next character */ 793 if (pattern[i + 1] != '\0') 794 i++; 795 break; 796 case '[': 797 in_bracket = 1; 798 break; 799 case ']': 800 in_bracket = 0; 801 break; 802 case '{': 803 if (in_bracket) 804 break; 805 if (pattern[i + 1] == '}') { 806 /* Protect a single {}, for find(1), like csh */ 807 i++; /* skip */ 808 break; 809 } 810 if (*startp == -1) 811 *startp = i; 812 brace_level++; 813 break; 814 case '}': 815 if (in_bracket) 816 break; 817 if (*startp < 0) { 818 /* Unbalanced brace */ 819 return -1; 820 } 821 if (--brace_level <= 0) 822 *endp = i; 823 break; 824 } 825 } 826 /* unbalanced brackets/braces */ 827 if (*endp < 0 && (*startp >= 0 || in_bracket)) 828 return -1; 829 return 0; 830 } 831 832 /* 833 * Assembles and records a successfully-expanded pattern, returns -1 on 834 * alloc failure. 835 */ 836 static int 837 emit_expansion(const char *pattern, int brace_start, int brace_end, 838 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 839 { 840 char *cp; 841 int o = 0, tail_len = strlen(pattern + brace_end + 1); 842 843 if ((cp = malloc(brace_start + (sel_end - sel_start) + 844 tail_len + 1)) == NULL) 845 return -1; 846 847 /* Pattern before initial brace */ 848 if (brace_start > 0) { 849 memcpy(cp, pattern, brace_start); 850 o = brace_start; 851 } 852 /* Current braced selection */ 853 if (sel_end - sel_start > 0) { 854 memcpy(cp + o, pattern + sel_start, 855 sel_end - sel_start); 856 o += sel_end - sel_start; 857 } 858 /* Remainder of pattern after closing brace */ 859 if (tail_len > 0) { 860 memcpy(cp + o, pattern + brace_end + 1, tail_len); 861 o += tail_len; 862 } 863 cp[o] = '\0'; 864 if (append(cp, patternsp, npatternsp) != 0) { 865 free(cp); 866 return -1; 867 } 868 return 0; 869 } 870 871 /* 872 * Expand the first encountered brace in pattern, appending the expanded 873 * patterns it yielded to the *patternsp array. 874 * 875 * Returns 0 on success or -1 on allocation failure. 876 * 877 * Signals whether expansion was performed via *expanded and whether 878 * pattern was invalid via *invalid. 879 */ 880 static int 881 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 882 int *expanded, int *invalid) 883 { 884 int i; 885 int in_bracket, brace_start, brace_end, brace_level; 886 int sel_start, sel_end; 887 888 *invalid = *expanded = 0; 889 890 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 891 *invalid = 1; 892 return 0; 893 } else if (brace_start == -1) 894 return 0; 895 896 in_bracket = brace_level = 0; 897 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 898 switch (pattern[i]) { 899 case '{': 900 if (in_bracket) 901 break; 902 brace_level++; 903 break; 904 case '}': 905 if (in_bracket) 906 break; 907 brace_level--; 908 break; 909 case '[': 910 in_bracket = 1; 911 break; 912 case ']': 913 in_bracket = 0; 914 break; 915 case '\\': 916 if (i < brace_end - 1) 917 i++; /* skip */ 918 break; 919 } 920 if (pattern[i] == ',' || i == brace_end - 1) { 921 if (in_bracket || brace_level > 0) 922 continue; 923 /* End of a selection, emit an expanded pattern */ 924 925 /* Adjust end index for last selection */ 926 sel_end = (i == brace_end - 1) ? brace_end : i; 927 if (emit_expansion(pattern, brace_start, brace_end, 928 sel_start, sel_end, patternsp, npatternsp) != 0) 929 return -1; 930 /* move on to the next selection */ 931 sel_start = i + 1; 932 continue; 933 } 934 } 935 if (in_bracket || brace_level > 0) { 936 *invalid = 1; 937 return 0; 938 } 939 /* success */ 940 *expanded = 1; 941 return 0; 942 } 943 944 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 945 static int 946 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 947 { 948 char *cp, *cp2, **active = NULL, **done = NULL; 949 size_t i, nactive = 0, ndone = 0; 950 int ret = -1, invalid = 0, expanded = 0; 951 952 *patternsp = NULL; 953 *npatternsp = 0; 954 955 /* Start the worklist with the original pattern */ 956 if ((cp = strdup(pattern)) == NULL) 957 return -1; 958 if (append(cp, &active, &nactive) != 0) { 959 free(cp); 960 return -1; 961 } 962 while (nactive > 0) { 963 cp = active[nactive - 1]; 964 nactive--; 965 if (brace_expand_one(cp, &active, &nactive, 966 &expanded, &invalid) == -1) { 967 free(cp); 968 goto fail; 969 } 970 if (invalid) 971 fatal_f("invalid brace pattern \"%s\"", cp); 972 if (expanded) { 973 /* 974 * Current entry expanded to new entries on the 975 * active list; discard the progenitor pattern. 976 */ 977 free(cp); 978 continue; 979 } 980 /* 981 * Pattern did not expand; append the finename component to 982 * the completed list 983 */ 984 if ((cp2 = strrchr(cp, '/')) != NULL) 985 *cp2++ = '\0'; 986 else 987 cp2 = cp; 988 if (append(xstrdup(cp2), &done, &ndone) != 0) { 989 free(cp); 990 goto fail; 991 } 992 free(cp); 993 } 994 /* success */ 995 *patternsp = done; 996 *npatternsp = ndone; 997 done = NULL; 998 ndone = 0; 999 ret = 0; 1000 fail: 1001 for (i = 0; i < nactive; i++) 1002 free(active[i]); 1003 free(active); 1004 for (i = 0; i < ndone; i++) 1005 free(done[i]); 1006 free(done); 1007 return ret; 1008 } 1009 1010 static struct sftp_conn * 1011 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 1012 int *reminp, int *remoutp, int *pidp) 1013 { 1014 if (sftp_direct == NULL) { 1015 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 1016 reminp, remoutp, pidp) < 0) 1017 return NULL; 1018 1019 } else { 1020 freeargs(&args); 1021 addargs(&args, "sftp-server"); 1022 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 1023 reminp, remoutp, pidp) < 0) 1024 return NULL; 1025 } 1026 return do_init(*reminp, *remoutp, 1027 sftp_copy_buflen, sftp_nrequests, limit_kbps); 1028 } 1029 1030 void 1031 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1032 { 1033 char *suser = NULL, *host = NULL, *src = NULL; 1034 char *bp, *tuser, *thost, *targ; 1035 int sport = -1, tport = -1; 1036 struct sftp_conn *conn = NULL, *conn2 = NULL; 1037 arglist alist; 1038 int i, r, status; 1039 u_int j; 1040 1041 memset(&alist, '\0', sizeof(alist)); 1042 alist.list = NULL; 1043 1044 /* Parse target */ 1045 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 1046 if (r == -1) { 1047 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 1048 ++errs; 1049 goto out; 1050 } 1051 if (r != 0) { 1052 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 1053 &targ) == -1) { 1054 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 1055 ++errs; 1056 goto out; 1057 } 1058 } 1059 1060 /* Parse source files */ 1061 for (i = 0; i < argc - 1; i++) { 1062 free(suser); 1063 free(host); 1064 free(src); 1065 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1066 if (r == -1) { 1067 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1068 ++errs; 1069 continue; 1070 } 1071 if (r != 0) { 1072 parse_user_host_path(argv[i], &suser, &host, &src); 1073 } 1074 if (suser != NULL && !okname(suser)) { 1075 ++errs; 1076 continue; 1077 } 1078 if (host && throughlocal) { /* extended remote to remote */ 1079 if (mode == MODE_SFTP) { 1080 if (remin == -1) { 1081 /* Connect to dest now */ 1082 conn = do_sftp_connect(thost, tuser, 1083 tport, sftp_direct, 1084 &remin, &remout, &do_cmd_pid); 1085 if (conn == NULL) { 1086 fatal("Unable to open " 1087 "destination connection"); 1088 } 1089 debug3_f("origin in %d out %d pid %ld", 1090 remin, remout, (long)do_cmd_pid); 1091 } 1092 /* 1093 * XXX remember suser/host/sport and only 1094 * reconnect if they change between arguments. 1095 * would save reconnections for cases like 1096 * scp -3 hosta:/foo hosta:/bar hostb: 1097 */ 1098 /* Connect to origin now */ 1099 conn2 = do_sftp_connect(host, suser, 1100 sport, sftp_direct, 1101 &remin2, &remout2, &do_cmd_pid2); 1102 if (conn2 == NULL) { 1103 fatal("Unable to open " 1104 "source connection"); 1105 } 1106 debug3_f("destination in %d out %d pid %ld", 1107 remin2, remout2, (long)do_cmd_pid2); 1108 throughlocal_sftp(conn2, conn, src, targ); 1109 (void) close(remin2); 1110 (void) close(remout2); 1111 remin2 = remout2 = -1; 1112 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1113 ++errs; 1114 else if (!WIFEXITED(status) || 1115 WEXITSTATUS(status) != 0) 1116 ++errs; 1117 do_cmd_pid2 = -1; 1118 continue; 1119 } else { 1120 xasprintf(&bp, "%s -f %s%s", cmd, 1121 *src == '-' ? "-- " : "", src); 1122 if (do_cmd(ssh_program, host, suser, sport, 0, 1123 bp, &remin, &remout, &do_cmd_pid) < 0) 1124 exit(1); 1125 free(bp); 1126 xasprintf(&bp, "%s -t %s%s", cmd, 1127 *targ == '-' ? "-- " : "", targ); 1128 if (do_cmd2(thost, tuser, tport, bp, 1129 remin, remout) < 0) 1130 exit(1); 1131 free(bp); 1132 (void) close(remin); 1133 (void) close(remout); 1134 remin = remout = -1; 1135 } 1136 } else if (host) { /* standard remote to remote */ 1137 /* 1138 * Second remote user is passed to first remote side 1139 * via scp command-line. Ensure it contains no obvious 1140 * shell characters. 1141 */ 1142 if (tuser != NULL && !okname(tuser)) { 1143 ++errs; 1144 continue; 1145 } 1146 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1147 /* This would require the remote support URIs */ 1148 fatal("target port not supported with two " 1149 "remote hosts and the -R option"); 1150 } 1151 1152 freeargs(&alist); 1153 addargs(&alist, "%s", ssh_program); 1154 addargs(&alist, "-x"); 1155 addargs(&alist, "-oClearAllForwardings=yes"); 1156 addargs(&alist, "-n"); 1157 for (j = 0; j < remote_remote_args.num; j++) { 1158 addargs(&alist, "%s", 1159 remote_remote_args.list[j]); 1160 } 1161 1162 if (sport != -1) { 1163 addargs(&alist, "-p"); 1164 addargs(&alist, "%d", sport); 1165 } 1166 if (suser) { 1167 addargs(&alist, "-l"); 1168 addargs(&alist, "%s", suser); 1169 } 1170 addargs(&alist, "--"); 1171 addargs(&alist, "%s", host); 1172 addargs(&alist, "%s", cmd); 1173 addargs(&alist, "%s", src); 1174 addargs(&alist, "%s%s%s:%s", 1175 tuser ? tuser : "", tuser ? "@" : "", 1176 thost, targ); 1177 if (do_local_cmd(&alist) != 0) 1178 errs = 1; 1179 } else { /* local to remote */ 1180 if (mode == MODE_SFTP) { 1181 if (remin == -1) { 1182 /* Connect to remote now */ 1183 conn = do_sftp_connect(thost, tuser, 1184 tport, sftp_direct, 1185 &remin, &remout, &do_cmd_pid); 1186 if (conn == NULL) { 1187 fatal("Unable to open sftp " 1188 "connection"); 1189 } 1190 } 1191 1192 /* The protocol */ 1193 source_sftp(1, argv[i], targ, conn); 1194 continue; 1195 } 1196 /* SCP */ 1197 if (remin == -1) { 1198 xasprintf(&bp, "%s -t %s%s", cmd, 1199 *targ == '-' ? "-- " : "", targ); 1200 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1201 bp, &remin, &remout, &do_cmd_pid) < 0) 1202 exit(1); 1203 if (response() < 0) 1204 exit(1); 1205 free(bp); 1206 } 1207 source(1, argv + i); 1208 } 1209 } 1210 out: 1211 if (mode == MODE_SFTP) 1212 free(conn); 1213 free(tuser); 1214 free(thost); 1215 free(targ); 1216 free(suser); 1217 free(host); 1218 free(src); 1219 } 1220 1221 void 1222 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1223 { 1224 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1225 arglist alist; 1226 struct sftp_conn *conn = NULL; 1227 int i, r, sport = -1; 1228 1229 memset(&alist, '\0', sizeof(alist)); 1230 alist.list = NULL; 1231 1232 for (i = 0; i < argc - 1; i++) { 1233 free(suser); 1234 free(host); 1235 free(src); 1236 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1237 if (r == -1) { 1238 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1239 ++errs; 1240 continue; 1241 } 1242 if (r != 0) 1243 parse_user_host_path(argv[i], &suser, &host, &src); 1244 if (suser != NULL && !okname(suser)) { 1245 ++errs; 1246 continue; 1247 } 1248 if (!host) { /* Local to local. */ 1249 freeargs(&alist); 1250 addargs(&alist, "%s", _PATH_CP); 1251 if (iamrecursive) 1252 addargs(&alist, "-r"); 1253 if (pflag) 1254 addargs(&alist, "-p"); 1255 addargs(&alist, "--"); 1256 addargs(&alist, "%s", argv[i]); 1257 addargs(&alist, "%s", argv[argc-1]); 1258 if (do_local_cmd(&alist)) 1259 ++errs; 1260 continue; 1261 } 1262 /* Remote to local. */ 1263 if (mode == MODE_SFTP) { 1264 conn = do_sftp_connect(host, suser, sport, 1265 sftp_direct, &remin, &remout, &do_cmd_pid); 1266 if (conn == NULL) { 1267 error("sftp connection failed"); 1268 ++errs; 1269 continue; 1270 } 1271 1272 /* The protocol */ 1273 sink_sftp(1, argv[argc - 1], src, conn); 1274 1275 free(conn); 1276 (void) close(remin); 1277 (void) close(remout); 1278 remin = remout = -1; 1279 continue; 1280 } 1281 /* SCP */ 1282 xasprintf(&bp, "%s -f %s%s", 1283 cmd, *src == '-' ? "-- " : "", src); 1284 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1285 &remin, &remout, &do_cmd_pid) < 0) { 1286 free(bp); 1287 ++errs; 1288 continue; 1289 } 1290 free(bp); 1291 sink(1, argv + argc - 1, src); 1292 (void) close(remin); 1293 remin = remout = -1; 1294 } 1295 free(suser); 1296 free(host); 1297 free(src); 1298 } 1299 1300 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1301 static char * 1302 prepare_remote_path(struct sftp_conn *conn, const char *path) 1303 { 1304 size_t nslash; 1305 1306 /* Handle ~ prefixed paths */ 1307 if (*path == '\0' || strcmp(path, "~") == 0) 1308 return xstrdup("."); 1309 if (*path != '~') 1310 return xstrdup(path); 1311 if (strncmp(path, "~/", 2) == 0) { 1312 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1313 return xstrdup("."); 1314 return xstrdup(path + 2 + nslash); 1315 } 1316 if (can_expand_path(conn)) 1317 return do_expand_path(conn, path); 1318 /* No protocol extension */ 1319 error("server expand-path extension is required " 1320 "for ~user paths in SFTP mode"); 1321 return NULL; 1322 } 1323 1324 void 1325 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1326 { 1327 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1328 int src_is_dir, target_is_dir; 1329 Attrib a; 1330 struct stat st; 1331 1332 memset(&a, '\0', sizeof(a)); 1333 if (stat(src, &st) != 0) 1334 fatal("stat local \"%s\": %s", src, strerror(errno)); 1335 src_is_dir = S_ISDIR(st.st_mode); 1336 if ((filename = basename(src)) == NULL) 1337 fatal("basename \"%s\": %s", src, strerror(errno)); 1338 1339 /* 1340 * No need to glob here - the local shell already took care of 1341 * the expansions 1342 */ 1343 if ((target = prepare_remote_path(conn, targ)) == NULL) 1344 cleanup_exit(255); 1345 target_is_dir = remote_is_dir(conn, target); 1346 if (targetshouldbedirectory && !target_is_dir) { 1347 debug("target directory \"%s\" does not exist", target); 1348 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1349 a.perm = st.st_mode | 0700; /* ensure writable */ 1350 if (do_mkdir(conn, target, &a, 1) != 0) 1351 cleanup_exit(255); /* error already logged */ 1352 target_is_dir = 1; 1353 } 1354 if (target_is_dir) 1355 abs_dst = path_append(target, filename); 1356 else { 1357 abs_dst = target; 1358 target = NULL; 1359 } 1360 debug3_f("copying local %s to remote %s", src, abs_dst); 1361 1362 if (src_is_dir && iamrecursive) { 1363 if (upload_dir(conn, src, abs_dst, pflag, 1364 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1365 error("failed to upload directory %s to %s", src, targ); 1366 errs = 1; 1367 } 1368 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1369 error("failed to upload file %s to %s", src, targ); 1370 errs = 1; 1371 } 1372 1373 free(abs_dst); 1374 free(target); 1375 } 1376 1377 void 1378 source(int argc, char **argv) 1379 { 1380 struct stat stb; 1381 static BUF buffer; 1382 BUF *bp; 1383 off_t i, statbytes; 1384 size_t amt, nr; 1385 int fd = -1, haderr, indx; 1386 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1387 int len; 1388 1389 for (indx = 0; indx < argc; ++indx) { 1390 name = argv[indx]; 1391 statbytes = 0; 1392 len = strlen(name); 1393 while (len > 1 && name[len-1] == '/') 1394 name[--len] = '\0'; 1395 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1396 goto syserr; 1397 if (strchr(name, '\n') != NULL) { 1398 strnvis(encname, name, sizeof(encname), VIS_NL); 1399 name = encname; 1400 } 1401 if (fstat(fd, &stb) == -1) { 1402 syserr: run_err("%s: %s", name, strerror(errno)); 1403 goto next; 1404 } 1405 if (stb.st_size < 0) { 1406 run_err("%s: %s", name, "Negative file size"); 1407 goto next; 1408 } 1409 unset_nonblock(fd); 1410 switch (stb.st_mode & S_IFMT) { 1411 case S_IFREG: 1412 break; 1413 case S_IFDIR: 1414 if (iamrecursive) { 1415 rsource(name, &stb); 1416 goto next; 1417 } 1418 /* FALLTHROUGH */ 1419 default: 1420 run_err("%s: not a regular file", name); 1421 goto next; 1422 } 1423 if ((last = strrchr(name, '/')) == NULL) 1424 last = name; 1425 else 1426 ++last; 1427 curfile = last; 1428 if (pflag) { 1429 if (do_times(remout, verbose_mode, &stb) < 0) 1430 goto next; 1431 } 1432 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1433 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1434 (u_int) (stb.st_mode & FILEMODEMASK), 1435 (long long)stb.st_size, last); 1436 if (verbose_mode) 1437 fmprintf(stderr, "Sending file modes: %s", buf); 1438 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1439 if (response() < 0) 1440 goto next; 1441 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1442 next: if (fd != -1) { 1443 (void) close(fd); 1444 fd = -1; 1445 } 1446 continue; 1447 } 1448 if (showprogress) 1449 start_progress_meter(curfile, stb.st_size, &statbytes); 1450 set_nonblock(remout); 1451 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1452 amt = bp->cnt; 1453 if (i + (off_t)amt > stb.st_size) 1454 amt = stb.st_size - i; 1455 if (!haderr) { 1456 if ((nr = atomicio(read, fd, 1457 bp->buf, amt)) != amt) { 1458 haderr = errno; 1459 memset(bp->buf + nr, 0, amt - nr); 1460 } 1461 } 1462 /* Keep writing after error to retain sync */ 1463 if (haderr) { 1464 (void)atomicio(vwrite, remout, bp->buf, amt); 1465 memset(bp->buf, 0, amt); 1466 continue; 1467 } 1468 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1469 &statbytes) != amt) 1470 haderr = errno; 1471 } 1472 unset_nonblock(remout); 1473 1474 if (fd != -1) { 1475 if (close(fd) == -1 && !haderr) 1476 haderr = errno; 1477 fd = -1; 1478 } 1479 if (!haderr) 1480 (void) atomicio(vwrite, remout, "", 1); 1481 else 1482 run_err("%s: %s", name, strerror(haderr)); 1483 (void) response(); 1484 if (showprogress) 1485 stop_progress_meter(); 1486 } 1487 } 1488 1489 void 1490 rsource(char *name, struct stat *statp) 1491 { 1492 DIR *dirp; 1493 struct dirent *dp; 1494 char *last, *vect[1], path[PATH_MAX]; 1495 1496 if (!(dirp = opendir(name))) { 1497 run_err("%s: %s", name, strerror(errno)); 1498 return; 1499 } 1500 last = strrchr(name, '/'); 1501 if (last == NULL) 1502 last = name; 1503 else 1504 last++; 1505 if (pflag) { 1506 if (do_times(remout, verbose_mode, statp) < 0) { 1507 closedir(dirp); 1508 return; 1509 } 1510 } 1511 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1512 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1513 if (verbose_mode) 1514 fmprintf(stderr, "Entering directory: %s", path); 1515 (void) atomicio(vwrite, remout, path, strlen(path)); 1516 if (response() < 0) { 1517 closedir(dirp); 1518 return; 1519 } 1520 while ((dp = readdir(dirp)) != NULL) { 1521 if (dp->d_ino == 0) 1522 continue; 1523 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1524 continue; 1525 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1526 run_err("%s/%s: name too long", name, dp->d_name); 1527 continue; 1528 } 1529 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1530 vect[0] = path; 1531 source(1, vect); 1532 } 1533 (void) closedir(dirp); 1534 (void) atomicio(vwrite, remout, "E\n", 2); 1535 (void) response(); 1536 } 1537 1538 void 1539 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1540 { 1541 char *abs_src = NULL; 1542 char *abs_dst = NULL; 1543 glob_t g; 1544 char *filename, *tmp = NULL; 1545 int i, r, err = 0, dst_is_dir; 1546 struct stat st; 1547 1548 memset(&g, 0, sizeof(g)); 1549 1550 /* 1551 * Here, we need remote glob as SFTP can not depend on remote shell 1552 * expansions 1553 */ 1554 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1555 err = -1; 1556 goto out; 1557 } 1558 1559 debug3_f("copying remote %s to local %s", abs_src, dst); 1560 if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK, 1561 NULL, &g)) != 0) { 1562 if (r == GLOB_NOSPACE) 1563 error("%s: too many glob matches", src); 1564 else 1565 error("%s: %s", src, strerror(ENOENT)); 1566 err = -1; 1567 goto out; 1568 } 1569 1570 /* Did we actually get any matches back from the glob? */ 1571 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1572 /* 1573 * If nothing matched but a path returned, then it's probably 1574 * a GLOB_NOCHECK result. Check whether the unglobbed path 1575 * exists so we can give a nice error message early. 1576 */ 1577 if (do_stat(conn, g.gl_pathv[0], 1) == NULL) { 1578 error("%s: %s", src, strerror(ENOENT)); 1579 err = -1; 1580 goto out; 1581 } 1582 } 1583 1584 if ((r = stat(dst, &st)) != 0) 1585 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1586 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1587 1588 if (g.gl_matchc > 1 && !dst_is_dir) { 1589 if (r == 0) { 1590 error("Multiple files match pattern, but destination " 1591 "\"%s\" is not a directory", dst); 1592 err = -1; 1593 goto out; 1594 } 1595 debug2_f("creating destination \"%s\"", dst); 1596 if (mkdir(dst, 0777) != 0) { 1597 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1598 err = -1; 1599 goto out; 1600 } 1601 dst_is_dir = 1; 1602 } 1603 1604 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1605 tmp = xstrdup(g.gl_pathv[i]); 1606 if ((filename = basename(tmp)) == NULL) { 1607 error("basename %s: %s", tmp, strerror(errno)); 1608 err = -1; 1609 goto out; 1610 } 1611 1612 if (dst_is_dir) 1613 abs_dst = path_append(dst, filename); 1614 else 1615 abs_dst = xstrdup(dst); 1616 1617 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1618 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1619 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1620 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1621 err = -1; 1622 } else { 1623 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1624 pflag, 0, 0, 1) == -1) 1625 err = -1; 1626 } 1627 free(abs_dst); 1628 abs_dst = NULL; 1629 free(tmp); 1630 tmp = NULL; 1631 } 1632 1633 out: 1634 free(abs_src); 1635 free(tmp); 1636 globfree(&g); 1637 if (err == -1) 1638 errs = 1; 1639 } 1640 1641 1642 #define TYPE_OVERFLOW(type, val) \ 1643 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1644 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1645 (sizeof(type) != 4 && sizeof(type) != 8)) 1646 1647 void 1648 sink(int argc, char **argv, const char *src) 1649 { 1650 static BUF buffer; 1651 struct stat stb; 1652 BUF *bp; 1653 off_t i; 1654 size_t j, count; 1655 int amt, exists, first, ofd; 1656 mode_t mode, omode, mask; 1657 off_t size, statbytes; 1658 unsigned long long ull; 1659 int setimes, targisdir, wrerr; 1660 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1661 char **patterns = NULL; 1662 size_t n, npatterns = 0; 1663 struct timeval tv[2]; 1664 1665 #define atime tv[0] 1666 #define mtime tv[1] 1667 #define SCREWUP(str) { why = str; goto screwup; } 1668 1669 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1670 SCREWUP("Unexpected off_t/time_t size"); 1671 1672 setimes = targisdir = 0; 1673 mask = umask(0); 1674 if (!pflag) 1675 (void) umask(mask); 1676 if (argc != 1) { 1677 run_err("ambiguous target"); 1678 exit(1); 1679 } 1680 targ = *argv; 1681 if (targetshouldbedirectory) 1682 verifydir(targ); 1683 1684 (void) atomicio(vwrite, remout, "", 1); 1685 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1686 targisdir = 1; 1687 if (src != NULL && !iamrecursive && !Tflag) { 1688 /* 1689 * Prepare to try to restrict incoming filenames to match 1690 * the requested destination file glob. 1691 */ 1692 if (brace_expand(src, &patterns, &npatterns) != 0) 1693 fatal_f("could not expand pattern"); 1694 } 1695 for (first = 1;; first = 0) { 1696 cp = buf; 1697 if (atomicio(read, remin, cp, 1) != 1) 1698 goto done; 1699 if (*cp++ == '\n') 1700 SCREWUP("unexpected <newline>"); 1701 do { 1702 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1703 SCREWUP("lost connection"); 1704 *cp++ = ch; 1705 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1706 *cp = 0; 1707 if (verbose_mode) 1708 fmprintf(stderr, "Sink: %s", buf); 1709 1710 if (buf[0] == '\01' || buf[0] == '\02') { 1711 if (iamremote == 0) { 1712 (void) snmprintf(visbuf, sizeof(visbuf), 1713 NULL, "%s", buf + 1); 1714 (void) atomicio(vwrite, STDERR_FILENO, 1715 visbuf, strlen(visbuf)); 1716 } 1717 if (buf[0] == '\02') 1718 exit(1); 1719 ++errs; 1720 continue; 1721 } 1722 if (buf[0] == 'E') { 1723 (void) atomicio(vwrite, remout, "", 1); 1724 goto done; 1725 } 1726 if (ch == '\n') 1727 *--cp = 0; 1728 1729 cp = buf; 1730 if (*cp == 'T') { 1731 setimes++; 1732 cp++; 1733 if (!isdigit((unsigned char)*cp)) 1734 SCREWUP("mtime.sec not present"); 1735 ull = strtoull(cp, &cp, 10); 1736 if (!cp || *cp++ != ' ') 1737 SCREWUP("mtime.sec not delimited"); 1738 if (TYPE_OVERFLOW(time_t, ull)) 1739 setimes = 0; /* out of range */ 1740 mtime.tv_sec = ull; 1741 mtime.tv_usec = strtol(cp, &cp, 10); 1742 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1743 mtime.tv_usec > 999999) 1744 SCREWUP("mtime.usec not delimited"); 1745 if (!isdigit((unsigned char)*cp)) 1746 SCREWUP("atime.sec not present"); 1747 ull = strtoull(cp, &cp, 10); 1748 if (!cp || *cp++ != ' ') 1749 SCREWUP("atime.sec not delimited"); 1750 if (TYPE_OVERFLOW(time_t, ull)) 1751 setimes = 0; /* out of range */ 1752 atime.tv_sec = ull; 1753 atime.tv_usec = strtol(cp, &cp, 10); 1754 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1755 atime.tv_usec > 999999) 1756 SCREWUP("atime.usec not delimited"); 1757 (void) atomicio(vwrite, remout, "", 1); 1758 continue; 1759 } 1760 if (*cp != 'C' && *cp != 'D') { 1761 /* 1762 * Check for the case "rcp remote:foo\* local:bar". 1763 * In this case, the line "No match." can be returned 1764 * by the shell before the rcp command on the remote is 1765 * executed so the ^Aerror_message convention isn't 1766 * followed. 1767 */ 1768 if (first) { 1769 run_err("%s", cp); 1770 exit(1); 1771 } 1772 SCREWUP("expected control record"); 1773 } 1774 mode = 0; 1775 for (++cp; cp < buf + 5; cp++) { 1776 if (*cp < '0' || *cp > '7') 1777 SCREWUP("bad mode"); 1778 mode = (mode << 3) | (*cp - '0'); 1779 } 1780 if (!pflag) 1781 mode &= ~mask; 1782 if (*cp++ != ' ') 1783 SCREWUP("mode not delimited"); 1784 1785 if (!isdigit((unsigned char)*cp)) 1786 SCREWUP("size not present"); 1787 ull = strtoull(cp, &cp, 10); 1788 if (!cp || *cp++ != ' ') 1789 SCREWUP("size not delimited"); 1790 if (TYPE_OVERFLOW(off_t, ull)) 1791 SCREWUP("size out of range"); 1792 size = (off_t)ull; 1793 1794 if (*cp == '\0' || strchr(cp, '/') != NULL || 1795 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1796 run_err("error: unexpected filename: %s", cp); 1797 exit(1); 1798 } 1799 if (npatterns > 0) { 1800 for (n = 0; n < npatterns; n++) { 1801 if (strcmp(patterns[n], cp) == 0 || 1802 fnmatch(patterns[n], cp, 0) == 0) 1803 break; 1804 } 1805 if (n >= npatterns) 1806 SCREWUP("filename does not match request"); 1807 } 1808 if (targisdir) { 1809 static char *namebuf; 1810 static size_t cursize; 1811 size_t need; 1812 1813 need = strlen(targ) + strlen(cp) + 250; 1814 if (need > cursize) { 1815 free(namebuf); 1816 namebuf = xmalloc(need); 1817 cursize = need; 1818 } 1819 (void) snprintf(namebuf, need, "%s%s%s", targ, 1820 strcmp(targ, "/") ? "/" : "", cp); 1821 np = namebuf; 1822 } else 1823 np = targ; 1824 curfile = cp; 1825 exists = stat(np, &stb) == 0; 1826 if (buf[0] == 'D') { 1827 int mod_flag = pflag; 1828 if (!iamrecursive) 1829 SCREWUP("received directory without -r"); 1830 if (exists) { 1831 if (!S_ISDIR(stb.st_mode)) { 1832 errno = ENOTDIR; 1833 goto bad; 1834 } 1835 if (pflag) 1836 (void) chmod(np, mode); 1837 } else { 1838 /* Handle copying from a read-only directory */ 1839 mod_flag = 1; 1840 if (mkdir(np, mode | S_IRWXU) == -1) 1841 goto bad; 1842 } 1843 vect[0] = xstrdup(np); 1844 sink(1, vect, src); 1845 if (setimes) { 1846 setimes = 0; 1847 (void) utimes(vect[0], tv); 1848 } 1849 if (mod_flag) 1850 (void) chmod(vect[0], mode); 1851 free(vect[0]); 1852 continue; 1853 } 1854 omode = mode; 1855 mode |= S_IWUSR; 1856 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1857 bad: run_err("%s: %s", np, strerror(errno)); 1858 continue; 1859 } 1860 (void) atomicio(vwrite, remout, "", 1); 1861 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1862 (void) close(ofd); 1863 continue; 1864 } 1865 cp = bp->buf; 1866 wrerr = 0; 1867 1868 /* 1869 * NB. do not use run_err() unless immediately followed by 1870 * exit() below as it may send a spurious reply that might 1871 * desyncronise us from the peer. Use note_err() instead. 1872 */ 1873 statbytes = 0; 1874 if (showprogress) 1875 start_progress_meter(curfile, size, &statbytes); 1876 set_nonblock(remin); 1877 for (count = i = 0; i < size; i += bp->cnt) { 1878 amt = bp->cnt; 1879 if (i + amt > size) 1880 amt = size - i; 1881 count += amt; 1882 do { 1883 j = atomicio6(read, remin, cp, amt, 1884 scpio, &statbytes); 1885 if (j == 0) { 1886 run_err("%s", j != EPIPE ? 1887 strerror(errno) : 1888 "dropped connection"); 1889 exit(1); 1890 } 1891 amt -= j; 1892 cp += j; 1893 } while (amt > 0); 1894 1895 if (count == bp->cnt) { 1896 /* Keep reading so we stay sync'd up. */ 1897 if (!wrerr) { 1898 if (atomicio(vwrite, ofd, bp->buf, 1899 count) != count) { 1900 note_err("%s: %s", np, 1901 strerror(errno)); 1902 wrerr = 1; 1903 } 1904 } 1905 count = 0; 1906 cp = bp->buf; 1907 } 1908 } 1909 unset_nonblock(remin); 1910 if (count != 0 && !wrerr && 1911 atomicio(vwrite, ofd, bp->buf, count) != count) { 1912 note_err("%s: %s", np, strerror(errno)); 1913 wrerr = 1; 1914 } 1915 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1916 ftruncate(ofd, size) != 0) 1917 note_err("%s: truncate: %s", np, strerror(errno)); 1918 if (pflag) { 1919 if (exists || omode != mode) 1920 #ifdef HAVE_FCHMOD 1921 if (fchmod(ofd, omode)) { 1922 #else /* HAVE_FCHMOD */ 1923 if (chmod(np, omode)) { 1924 #endif /* HAVE_FCHMOD */ 1925 note_err("%s: set mode: %s", 1926 np, strerror(errno)); 1927 } 1928 } else { 1929 if (!exists && omode != mode) 1930 #ifdef HAVE_FCHMOD 1931 if (fchmod(ofd, omode & ~mask)) { 1932 #else /* HAVE_FCHMOD */ 1933 if (chmod(np, omode & ~mask)) { 1934 #endif /* HAVE_FCHMOD */ 1935 note_err("%s: set mode: %s", 1936 np, strerror(errno)); 1937 } 1938 } 1939 if (close(ofd) == -1) 1940 note_err("%s: close: %s", np, strerror(errno)); 1941 (void) response(); 1942 if (showprogress) 1943 stop_progress_meter(); 1944 if (setimes && !wrerr) { 1945 setimes = 0; 1946 if (utimes(np, tv) == -1) { 1947 note_err("%s: set times: %s", 1948 np, strerror(errno)); 1949 } 1950 } 1951 /* If no error was noted then signal success for this file */ 1952 if (note_err(NULL) == 0) 1953 (void) atomicio(vwrite, remout, "", 1); 1954 } 1955 done: 1956 for (n = 0; n < npatterns; n++) 1957 free(patterns[n]); 1958 free(patterns); 1959 return; 1960 screwup: 1961 for (n = 0; n < npatterns; n++) 1962 free(patterns[n]); 1963 free(patterns); 1964 run_err("protocol error: %s", why); 1965 exit(1); 1966 } 1967 1968 void 1969 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1970 char *src, char *targ) 1971 { 1972 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1973 char *abs_src = NULL, *tmp = NULL; 1974 glob_t g; 1975 int i, r, targetisdir, err = 0; 1976 1977 if ((filename = basename(src)) == NULL) 1978 fatal("basename %s: %s", src, strerror(errno)); 1979 1980 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1981 (target = prepare_remote_path(to, targ)) == NULL) 1982 cleanup_exit(255); 1983 memset(&g, 0, sizeof(g)); 1984 1985 targetisdir = remote_is_dir(to, target); 1986 if (!targetisdir && targetshouldbedirectory) { 1987 error("%s: destination is not a directory", targ); 1988 err = -1; 1989 goto out; 1990 } 1991 1992 debug3_f("copying remote %s to remote %s", abs_src, target); 1993 if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK, 1994 NULL, &g)) != 0) { 1995 if (r == GLOB_NOSPACE) 1996 error("%s: too many glob matches", src); 1997 else 1998 error("%s: %s", src, strerror(ENOENT)); 1999 err = -1; 2000 goto out; 2001 } 2002 2003 /* Did we actually get any matches back from the glob? */ 2004 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 2005 /* 2006 * If nothing matched but a path returned, then it's probably 2007 * a GLOB_NOCHECK result. Check whether the unglobbed path 2008 * exists so we can give a nice error message early. 2009 */ 2010 if (do_stat(from, g.gl_pathv[0], 1) == NULL) { 2011 error("%s: %s", src, strerror(ENOENT)); 2012 err = -1; 2013 goto out; 2014 } 2015 } 2016 2017 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 2018 tmp = xstrdup(g.gl_pathv[i]); 2019 if ((filename = basename(tmp)) == NULL) { 2020 error("basename %s: %s", tmp, strerror(errno)); 2021 err = -1; 2022 goto out; 2023 } 2024 2025 if (targetisdir) 2026 abs_dst = path_append(target, filename); 2027 else 2028 abs_dst = xstrdup(target); 2029 2030 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 2031 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 2032 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 2033 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 2034 err = -1; 2035 } else { 2036 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 2037 pflag) == -1) 2038 err = -1; 2039 } 2040 free(abs_dst); 2041 abs_dst = NULL; 2042 free(tmp); 2043 tmp = NULL; 2044 } 2045 2046 out: 2047 free(abs_src); 2048 free(abs_dst); 2049 free(target); 2050 free(tmp); 2051 globfree(&g); 2052 if (err == -1) 2053 errs = 1; 2054 } 2055 2056 int 2057 response(void) 2058 { 2059 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 2060 2061 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 2062 lostconn(0); 2063 2064 cp = rbuf; 2065 switch (resp) { 2066 case 0: /* ok */ 2067 return (0); 2068 default: 2069 *cp++ = resp; 2070 /* FALLTHROUGH */ 2071 case 1: /* error, followed by error msg */ 2072 case 2: /* fatal error, "" */ 2073 do { 2074 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 2075 lostconn(0); 2076 *cp++ = ch; 2077 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 2078 2079 if (!iamremote) { 2080 cp[-1] = '\0'; 2081 (void) snmprintf(visbuf, sizeof(visbuf), 2082 NULL, "%s\n", rbuf); 2083 (void) atomicio(vwrite, STDERR_FILENO, 2084 visbuf, strlen(visbuf)); 2085 } 2086 ++errs; 2087 if (resp == 1) 2088 return (-1); 2089 exit(1); 2090 } 2091 /* NOTREACHED */ 2092 } 2093 2094 void 2095 usage(void) 2096 { 2097 (void) fprintf(stderr, 2098 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2099 " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n" 2100 " [-P port] [-S program] [-X sftp_option] source ... target\n"); 2101 exit(1); 2102 } 2103 2104 void 2105 run_err(const char *fmt,...) 2106 { 2107 static FILE *fp; 2108 va_list ap; 2109 2110 ++errs; 2111 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2112 (void) fprintf(fp, "%c", 0x01); 2113 (void) fprintf(fp, "scp: "); 2114 va_start(ap, fmt); 2115 (void) vfprintf(fp, fmt, ap); 2116 va_end(ap); 2117 (void) fprintf(fp, "\n"); 2118 (void) fflush(fp); 2119 } 2120 2121 if (!iamremote) { 2122 va_start(ap, fmt); 2123 vfmprintf(stderr, fmt, ap); 2124 va_end(ap); 2125 fprintf(stderr, "\n"); 2126 } 2127 } 2128 2129 /* 2130 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2131 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2132 * any active error at the end of the transfer. 2133 */ 2134 int 2135 note_err(const char *fmt, ...) 2136 { 2137 static char *emsg; 2138 va_list ap; 2139 2140 /* Replay any previously-noted error */ 2141 if (fmt == NULL) { 2142 if (emsg == NULL) 2143 return 0; 2144 run_err("%s", emsg); 2145 free(emsg); 2146 emsg = NULL; 2147 return -1; 2148 } 2149 2150 errs++; 2151 /* Prefer first-noted error */ 2152 if (emsg != NULL) 2153 return -1; 2154 2155 va_start(ap, fmt); 2156 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2157 va_end(ap); 2158 return -1; 2159 } 2160 2161 void 2162 verifydir(char *cp) 2163 { 2164 struct stat stb; 2165 2166 if (!stat(cp, &stb)) { 2167 if (S_ISDIR(stb.st_mode)) 2168 return; 2169 errno = ENOTDIR; 2170 } 2171 run_err("%s: %s", cp, strerror(errno)); 2172 killchild(0); 2173 } 2174 2175 int 2176 okname(char *cp0) 2177 { 2178 int c; 2179 char *cp; 2180 2181 cp = cp0; 2182 do { 2183 c = (int)*cp; 2184 if (c & 0200) 2185 goto bad; 2186 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2187 switch (c) { 2188 case '\'': 2189 case '"': 2190 case '`': 2191 case ' ': 2192 case '#': 2193 goto bad; 2194 default: 2195 break; 2196 } 2197 } 2198 } while (*++cp); 2199 return (1); 2200 2201 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2202 return (0); 2203 } 2204 2205 BUF * 2206 allocbuf(BUF *bp, int fd, int blksize) 2207 { 2208 size_t size; 2209 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE 2210 struct stat stb; 2211 2212 if (fstat(fd, &stb) == -1) { 2213 run_err("fstat: %s", strerror(errno)); 2214 return (0); 2215 } 2216 size = ROUNDUP(stb.st_blksize, blksize); 2217 if (size == 0) 2218 size = blksize; 2219 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2220 size = blksize; 2221 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ 2222 if (bp->cnt >= size) 2223 return (bp); 2224 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2225 bp->cnt = size; 2226 return (bp); 2227 } 2228 2229 void 2230 lostconn(int signo) 2231 { 2232 if (!iamremote) 2233 (void)write(STDERR_FILENO, "lost connection\n", 16); 2234 if (signo) 2235 _exit(1); 2236 else 2237 exit(1); 2238 } 2239 2240 void 2241 cleanup_exit(int i) 2242 { 2243 if (remin > 0) 2244 close(remin); 2245 if (remout > 0) 2246 close(remout); 2247 if (remin2 > 0) 2248 close(remin2); 2249 if (remout2 > 0) 2250 close(remout2); 2251 if (do_cmd_pid > 0) 2252 waitpid(do_cmd_pid, NULL, 0); 2253 if (do_cmd_pid2 > 0) 2254 waitpid(do_cmd_pid2, NULL, 0); 2255 exit(i); 2256 } 2257