1 /* $OpenBSD: scp.c,v 1.256 2023/03/31 05:56:36 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 <sys/types.h> 75 #include <sys/poll.h> 76 #include <sys/wait.h> 77 #include <sys/stat.h> 78 #include <sys/time.h> 79 #include <sys/uio.h> 80 81 #include <ctype.h> 82 #include <dirent.h> 83 #include <errno.h> 84 #include <fcntl.h> 85 #include <fnmatch.h> 86 #include <glob.h> 87 #include <libgen.h> 88 #include <locale.h> 89 #include <pwd.h> 90 #include <signal.h> 91 #include <stdarg.h> 92 #include <stdint.h> 93 #include <stdio.h> 94 #include <stdlib.h> 95 #include <string.h> 96 #include <time.h> 97 #include <unistd.h> 98 #include <limits.h> 99 #include <util.h> 100 #include <vis.h> 101 102 #include "xmalloc.h" 103 #include "ssh.h" 104 #include "atomicio.h" 105 #include "pathnames.h" 106 #include "log.h" 107 #include "misc.h" 108 #include "progressmeter.h" 109 #include "utf8.h" 110 #include "sftp.h" 111 112 #include "sftp-common.h" 113 #include "sftp-client.h" 114 115 #define COPY_BUFLEN 16384 116 117 int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *); 118 int do_cmd2(char *, char *, int, char *, int, int); 119 120 /* Struct for addargs */ 121 arglist args; 122 arglist remote_remote_args; 123 124 /* Bandwidth limit */ 125 long long limit_kbps = 0; 126 struct bwlimit bwlimit; 127 128 /* Name of current file being transferred. */ 129 char *curfile; 130 131 /* This is set to non-zero to enable verbose mode. */ 132 int verbose_mode = 0; 133 LogLevel log_level = SYSLOG_LEVEL_INFO; 134 135 /* This is set to zero if the progressmeter is not desired. */ 136 int showprogress = 1; 137 138 /* 139 * This is set to non-zero if remote-remote copy should be piped 140 * through this process. 141 */ 142 int throughlocal = 1; 143 144 /* Non-standard port to use for the ssh connection or -1. */ 145 int sshport = -1; 146 147 /* This is the program to execute for the secured connection. ("ssh" or -S) */ 148 char *ssh_program = _PATH_SSH_PROGRAM; 149 150 /* This is used to store the pid of ssh_program */ 151 pid_t do_cmd_pid = -1; 152 pid_t do_cmd_pid2 = -1; 153 154 /* SFTP copy parameters */ 155 size_t sftp_copy_buflen; 156 size_t sftp_nrequests; 157 158 /* Needed for sftp */ 159 volatile sig_atomic_t interrupted = 0; 160 161 int remote_glob(struct sftp_conn *, const char *, int, 162 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ 163 164 static void 165 killchild(int signo) 166 { 167 if (do_cmd_pid > 1) { 168 kill(do_cmd_pid, signo ? signo : SIGTERM); 169 (void)waitpid(do_cmd_pid, NULL, 0); 170 } 171 if (do_cmd_pid2 > 1) { 172 kill(do_cmd_pid2, signo ? signo : SIGTERM); 173 (void)waitpid(do_cmd_pid2, NULL, 0); 174 } 175 176 if (signo) 177 _exit(1); 178 exit(1); 179 } 180 181 static void 182 suspone(int pid, int signo) 183 { 184 int status; 185 186 if (pid > 1) { 187 kill(pid, signo); 188 while (waitpid(pid, &status, WUNTRACED) == -1 && 189 errno == EINTR) 190 ; 191 } 192 } 193 194 static void 195 suspchild(int signo) 196 { 197 suspone(do_cmd_pid, signo); 198 suspone(do_cmd_pid2, signo); 199 kill(getpid(), SIGSTOP); 200 } 201 202 static int 203 do_local_cmd(arglist *a) 204 { 205 u_int i; 206 int status; 207 pid_t pid; 208 209 if (a->num == 0) 210 fatal("do_local_cmd: no arguments"); 211 212 if (verbose_mode) { 213 fprintf(stderr, "Executing:"); 214 for (i = 0; i < a->num; i++) 215 fmprintf(stderr, " %s", a->list[i]); 216 fprintf(stderr, "\n"); 217 } 218 if ((pid = fork()) == -1) 219 fatal("do_local_cmd: fork: %s", strerror(errno)); 220 221 if (pid == 0) { 222 execvp(a->list[0], a->list); 223 perror(a->list[0]); 224 exit(1); 225 } 226 227 do_cmd_pid = pid; 228 ssh_signal(SIGTERM, killchild); 229 ssh_signal(SIGINT, killchild); 230 ssh_signal(SIGHUP, killchild); 231 232 while (waitpid(pid, &status, 0) == -1) 233 if (errno != EINTR) 234 fatal("do_local_cmd: waitpid: %s", strerror(errno)); 235 236 do_cmd_pid = -1; 237 238 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 239 return (-1); 240 241 return (0); 242 } 243 244 /* 245 * This function executes the given command as the specified user on the 246 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This 247 * assigns the input and output file descriptors on success. 248 */ 249 250 int 251 do_cmd(char *program, char *host, char *remuser, int port, int subsystem, 252 char *cmd, int *fdin, int *fdout, pid_t *pid) 253 { 254 int sv[2]; 255 256 if (verbose_mode) 257 fmprintf(stderr, 258 "Executing: program %s host %s, user %s, command %s\n", 259 program, host, 260 remuser ? remuser : "(unspecified)", cmd); 261 262 if (port == -1) 263 port = sshport; 264 265 /* Create a socket pair for communicating with ssh. */ 266 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) 267 fatal("socketpair: %s", strerror(errno)); 268 269 ssh_signal(SIGTSTP, suspchild); 270 ssh_signal(SIGTTIN, suspchild); 271 ssh_signal(SIGTTOU, suspchild); 272 273 /* Fork a child to execute the command on the remote host using ssh. */ 274 *pid = fork(); 275 switch (*pid) { 276 case -1: 277 fatal("fork: %s", strerror(errno)); 278 case 0: 279 /* Child. */ 280 if (dup2(sv[0], STDIN_FILENO) == -1 || 281 dup2(sv[0], STDOUT_FILENO) == -1) { 282 perror("dup2"); 283 _exit(1); 284 } 285 close(sv[0]); 286 close(sv[1]); 287 replacearg(&args, 0, "%s", program); 288 if (port != -1) { 289 addargs(&args, "-p"); 290 addargs(&args, "%d", port); 291 } 292 if (remuser != NULL) { 293 addargs(&args, "-l"); 294 addargs(&args, "%s", remuser); 295 } 296 if (subsystem) 297 addargs(&args, "-s"); 298 addargs(&args, "--"); 299 addargs(&args, "%s", host); 300 addargs(&args, "%s", cmd); 301 302 execvp(program, args.list); 303 perror(program); 304 _exit(1); 305 default: 306 /* Parent. Close the other side, and return the local side. */ 307 close(sv[0]); 308 *fdin = sv[1]; 309 *fdout = sv[1]; 310 ssh_signal(SIGTERM, killchild); 311 ssh_signal(SIGINT, killchild); 312 ssh_signal(SIGHUP, killchild); 313 return 0; 314 } 315 } 316 317 /* 318 * This function executes a command similar to do_cmd(), but expects the 319 * input and output descriptors to be setup by a previous call to do_cmd(). 320 * This way the input and output of two commands can be connected. 321 */ 322 int 323 do_cmd2(char *host, char *remuser, int port, char *cmd, 324 int fdin, int fdout) 325 { 326 int status; 327 pid_t pid; 328 329 if (verbose_mode) 330 fmprintf(stderr, 331 "Executing: 2nd program %s host %s, user %s, command %s\n", 332 ssh_program, host, 333 remuser ? remuser : "(unspecified)", cmd); 334 335 if (port == -1) 336 port = sshport; 337 338 /* Fork a child to execute the command on the remote host using ssh. */ 339 pid = fork(); 340 if (pid == 0) { 341 if (dup2(fdin, 0) == -1) 342 perror("dup2"); 343 if (dup2(fdout, 1) == -1) 344 perror("dup2"); 345 346 replacearg(&args, 0, "%s", ssh_program); 347 if (port != -1) { 348 addargs(&args, "-p"); 349 addargs(&args, "%d", port); 350 } 351 if (remuser != NULL) { 352 addargs(&args, "-l"); 353 addargs(&args, "%s", remuser); 354 } 355 addargs(&args, "-oBatchMode=yes"); 356 addargs(&args, "--"); 357 addargs(&args, "%s", host); 358 addargs(&args, "%s", cmd); 359 360 execvp(ssh_program, args.list); 361 perror(ssh_program); 362 exit(1); 363 } else if (pid == -1) { 364 fatal("fork: %s", strerror(errno)); 365 } 366 while (waitpid(pid, &status, 0) == -1) 367 if (errno != EINTR) 368 fatal("do_cmd2: waitpid: %s", strerror(errno)); 369 return 0; 370 } 371 372 typedef struct { 373 size_t cnt; 374 char *buf; 375 } BUF; 376 377 BUF *allocbuf(BUF *, int, int); 378 void lostconn(int); 379 int okname(char *); 380 void run_err(const char *,...) 381 __attribute__((__format__ (printf, 1, 2))) 382 __attribute__((__nonnull__ (1))); 383 int note_err(const char *,...) 384 __attribute__((__format__ (printf, 1, 2))); 385 void verifydir(char *); 386 387 struct passwd *pwd; 388 uid_t userid; 389 int errs, remin, remout, remin2, remout2; 390 int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 391 392 #define CMDNEEDS 64 393 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 394 395 enum scp_mode_e { 396 MODE_SCP, 397 MODE_SFTP 398 }; 399 400 int response(void); 401 void rsource(char *, struct stat *); 402 void sink(int, char *[], const char *); 403 void source(int, char *[]); 404 void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 405 void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 406 void usage(void); 407 408 void source_sftp(int, char *, char *, struct sftp_conn *); 409 void sink_sftp(int, char *, const char *, struct sftp_conn *); 410 void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 411 char *, char *); 412 413 int 414 main(int argc, char **argv) 415 { 416 int ch, fflag, tflag, status, r, n; 417 char **newargv, *argv0; 418 const char *errstr; 419 extern char *optarg; 420 extern int optind; 421 enum scp_mode_e mode = MODE_SFTP; 422 char *sftp_direct = NULL; 423 long long llv; 424 425 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ 426 sanitise_stdfd(); 427 428 setlocale(LC_CTYPE, ""); 429 430 /* Copy argv, because we modify it */ 431 argv0 = argv[0]; 432 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv)); 433 for (n = 0; n < argc; n++) 434 newargv[n] = xstrdup(argv[n]); 435 argv = newargv; 436 437 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 438 439 memset(&args, '\0', sizeof(args)); 440 memset(&remote_remote_args, '\0', sizeof(remote_remote_args)); 441 args.list = remote_remote_args.list = NULL; 442 addargs(&args, "%s", ssh_program); 443 addargs(&args, "-x"); 444 addargs(&args, "-oPermitLocalCommand=no"); 445 addargs(&args, "-oClearAllForwardings=yes"); 446 addargs(&args, "-oRemoteCommand=none"); 447 addargs(&args, "-oRequestTTY=no"); 448 449 fflag = Tflag = tflag = 0; 450 while ((ch = getopt(argc, argv, 451 "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) { 452 switch (ch) { 453 /* User-visible flags. */ 454 case '1': 455 fatal("SSH protocol v.1 is no longer supported"); 456 break; 457 case '2': 458 /* Ignored */ 459 break; 460 case 'A': 461 case '4': 462 case '6': 463 case 'C': 464 addargs(&args, "-%c", ch); 465 addargs(&remote_remote_args, "-%c", ch); 466 break; 467 case 'D': 468 sftp_direct = optarg; 469 break; 470 case '3': 471 throughlocal = 1; 472 break; 473 case 'R': 474 throughlocal = 0; 475 break; 476 case 'o': 477 case 'c': 478 case 'i': 479 case 'F': 480 case 'J': 481 addargs(&remote_remote_args, "-%c", ch); 482 addargs(&remote_remote_args, "%s", optarg); 483 addargs(&args, "-%c", ch); 484 addargs(&args, "%s", optarg); 485 break; 486 case 'O': 487 mode = MODE_SCP; 488 break; 489 case 's': 490 mode = MODE_SFTP; 491 break; 492 case 'P': 493 sshport = a2port(optarg); 494 if (sshport <= 0) 495 fatal("bad port \"%s\"\n", optarg); 496 break; 497 case 'B': 498 addargs(&remote_remote_args, "-oBatchmode=yes"); 499 addargs(&args, "-oBatchmode=yes"); 500 break; 501 case 'l': 502 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024, 503 &errstr); 504 if (errstr != NULL) 505 usage(); 506 limit_kbps *= 1024; /* kbps */ 507 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN); 508 break; 509 case 'p': 510 pflag = 1; 511 break; 512 case 'r': 513 iamrecursive = 1; 514 break; 515 case 'S': 516 ssh_program = xstrdup(optarg); 517 break; 518 case 'v': 519 addargs(&args, "-v"); 520 addargs(&remote_remote_args, "-v"); 521 if (verbose_mode == 0) 522 log_level = SYSLOG_LEVEL_DEBUG1; 523 else if (log_level < SYSLOG_LEVEL_DEBUG3) 524 log_level++; 525 verbose_mode = 1; 526 break; 527 case 'q': 528 addargs(&args, "-q"); 529 addargs(&remote_remote_args, "-q"); 530 showprogress = 0; 531 break; 532 case 'X': 533 /* Please keep in sync with sftp.c -X */ 534 if (strncmp(optarg, "buffer=", 7) == 0) { 535 r = scan_scaled(optarg + 7, &llv); 536 if (r == 0 && (llv <= 0 || llv > 256 * 1024)) { 537 r = -1; 538 errno = EINVAL; 539 } 540 if (r == -1) { 541 fatal("Invalid buffer size \"%s\": %s", 542 optarg + 7, strerror(errno)); 543 } 544 sftp_copy_buflen = (size_t)llv; 545 } else if (strncmp(optarg, "nrequests=", 10) == 0) { 546 llv = strtonum(optarg + 10, 1, 256 * 1024, 547 &errstr); 548 if (errstr != NULL) { 549 fatal("Invalid number of requests " 550 "\"%s\": %s", optarg + 10, errstr); 551 } 552 sftp_nrequests = (size_t)llv; 553 } else { 554 fatal("Invalid -X option"); 555 } 556 break; 557 558 /* Server options. */ 559 case 'd': 560 targetshouldbedirectory = 1; 561 break; 562 case 'f': /* "from" */ 563 iamremote = 1; 564 fflag = 1; 565 break; 566 case 't': /* "to" */ 567 iamremote = 1; 568 tflag = 1; 569 break; 570 case 'T': 571 Tflag = 1; 572 break; 573 default: 574 usage(); 575 } 576 } 577 argc -= optind; 578 argv += optind; 579 580 log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2); 581 582 /* Do this last because we want the user to be able to override it */ 583 addargs(&args, "-oForwardAgent=no"); 584 585 if (iamremote) 586 mode = MODE_SCP; 587 588 if ((pwd = getpwuid(userid = getuid())) == NULL) 589 fatal("unknown user %u", (u_int) userid); 590 591 if (!isatty(STDOUT_FILENO)) 592 showprogress = 0; 593 594 if (pflag) { 595 /* Cannot pledge: -p allows setuid/setgid files... */ 596 } else { 597 if (pledge("stdio rpath wpath cpath fattr tty proc exec", 598 NULL) == -1) { 599 perror("pledge"); 600 exit(1); 601 } 602 } 603 604 remin = STDIN_FILENO; 605 remout = STDOUT_FILENO; 606 607 if (fflag) { 608 /* Follow "protocol", send data. */ 609 (void) response(); 610 source(argc, argv); 611 exit(errs != 0); 612 } 613 if (tflag) { 614 /* Receive data. */ 615 sink(argc, argv, NULL); 616 exit(errs != 0); 617 } 618 if (argc < 2) 619 usage(); 620 if (argc > 2) 621 targetshouldbedirectory = 1; 622 623 remin = remout = -1; 624 do_cmd_pid = -1; 625 /* Command to be executed on remote system using "ssh". */ 626 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", 627 verbose_mode ? " -v" : "", 628 iamrecursive ? " -r" : "", pflag ? " -p" : "", 629 targetshouldbedirectory ? " -d" : ""); 630 631 (void) ssh_signal(SIGPIPE, lostconn); 632 633 if (colon(argv[argc - 1])) /* Dest is remote host. */ 634 toremote(argc, argv, mode, sftp_direct); 635 else { 636 if (targetshouldbedirectory) 637 verifydir(argv[argc - 1]); 638 tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */ 639 } 640 /* 641 * Finally check the exit status of the ssh process, if one was forked 642 * and no error has occurred yet 643 */ 644 if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) { 645 if (remin != -1) 646 (void) close(remin); 647 if (remout != -1) 648 (void) close(remout); 649 if (waitpid(do_cmd_pid, &status, 0) == -1) 650 errs = 1; 651 else { 652 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) 653 errs = 1; 654 } 655 } 656 exit(errs != 0); 657 } 658 659 /* Callback from atomicio6 to update progress meter and limit bandwidth */ 660 static int 661 scpio(void *_cnt, size_t s) 662 { 663 off_t *cnt = (off_t *)_cnt; 664 665 *cnt += s; 666 refresh_progress_meter(0); 667 if (limit_kbps > 0) 668 bandwidth_limit(&bwlimit, s); 669 return 0; 670 } 671 672 static int 673 do_times(int fd, int verb, const struct stat *sb) 674 { 675 /* strlen(2^64) == 20; strlen(10^6) == 7 */ 676 char buf[(20 + 7 + 2) * 2 + 2]; 677 678 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n", 679 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime), 680 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime)); 681 if (verb) { 682 fprintf(stderr, "File mtime %lld atime %lld\n", 683 (long long)sb->st_mtime, (long long)sb->st_atime); 684 fprintf(stderr, "Sending file timestamps: %s", buf); 685 } 686 (void) atomicio(vwrite, fd, buf, strlen(buf)); 687 return (response()); 688 } 689 690 static int 691 parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp, 692 char **pathp) 693 { 694 int r; 695 696 r = parse_uri("scp", uri, userp, hostp, portp, pathp); 697 if (r == 0 && *pathp == NULL) 698 *pathp = xstrdup("."); 699 return r; 700 } 701 702 /* Appends a string to an array; returns 0 on success, -1 on alloc failure */ 703 static int 704 append(char *cp, char ***ap, size_t *np) 705 { 706 char **tmp; 707 708 if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL) 709 return -1; 710 tmp[(*np)] = cp; 711 (*np)++; 712 *ap = tmp; 713 return 0; 714 } 715 716 /* 717 * Finds the start and end of the first brace pair in the pattern. 718 * returns 0 on success or -1 for invalid patterns. 719 */ 720 static int 721 find_brace(const char *pattern, int *startp, int *endp) 722 { 723 int i; 724 int in_bracket, brace_level; 725 726 *startp = *endp = -1; 727 in_bracket = brace_level = 0; 728 for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) { 729 switch (pattern[i]) { 730 case '\\': 731 /* skip next character */ 732 if (pattern[i + 1] != '\0') 733 i++; 734 break; 735 case '[': 736 in_bracket = 1; 737 break; 738 case ']': 739 in_bracket = 0; 740 break; 741 case '{': 742 if (in_bracket) 743 break; 744 if (pattern[i + 1] == '}') { 745 /* Protect a single {}, for find(1), like csh */ 746 i++; /* skip */ 747 break; 748 } 749 if (*startp == -1) 750 *startp = i; 751 brace_level++; 752 break; 753 case '}': 754 if (in_bracket) 755 break; 756 if (*startp < 0) { 757 /* Unbalanced brace */ 758 return -1; 759 } 760 if (--brace_level <= 0) 761 *endp = i; 762 break; 763 } 764 } 765 /* unbalanced brackets/braces */ 766 if (*endp < 0 && (*startp >= 0 || in_bracket)) 767 return -1; 768 return 0; 769 } 770 771 /* 772 * Assembles and records a successfully-expanded pattern, returns -1 on 773 * alloc failure. 774 */ 775 static int 776 emit_expansion(const char *pattern, int brace_start, int brace_end, 777 int sel_start, int sel_end, char ***patternsp, size_t *npatternsp) 778 { 779 char *cp; 780 int o = 0, tail_len = strlen(pattern + brace_end + 1); 781 782 if ((cp = malloc(brace_start + (sel_end - sel_start) + 783 tail_len + 1)) == NULL) 784 return -1; 785 786 /* Pattern before initial brace */ 787 if (brace_start > 0) { 788 memcpy(cp, pattern, brace_start); 789 o = brace_start; 790 } 791 /* Current braced selection */ 792 if (sel_end - sel_start > 0) { 793 memcpy(cp + o, pattern + sel_start, 794 sel_end - sel_start); 795 o += sel_end - sel_start; 796 } 797 /* Remainder of pattern after closing brace */ 798 if (tail_len > 0) { 799 memcpy(cp + o, pattern + brace_end + 1, tail_len); 800 o += tail_len; 801 } 802 cp[o] = '\0'; 803 if (append(cp, patternsp, npatternsp) != 0) { 804 free(cp); 805 return -1; 806 } 807 return 0; 808 } 809 810 /* 811 * Expand the first encountered brace in pattern, appending the expanded 812 * patterns it yielded to the *patternsp array. 813 * 814 * Returns 0 on success or -1 on allocation failure. 815 * 816 * Signals whether expansion was performed via *expanded and whether 817 * pattern was invalid via *invalid. 818 */ 819 static int 820 brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 821 int *expanded, int *invalid) 822 { 823 int i; 824 int in_bracket, brace_start, brace_end, brace_level; 825 int sel_start, sel_end; 826 827 *invalid = *expanded = 0; 828 829 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 830 *invalid = 1; 831 return 0; 832 } else if (brace_start == -1) 833 return 0; 834 835 in_bracket = brace_level = 0; 836 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 837 switch (pattern[i]) { 838 case '{': 839 if (in_bracket) 840 break; 841 brace_level++; 842 break; 843 case '}': 844 if (in_bracket) 845 break; 846 brace_level--; 847 break; 848 case '[': 849 in_bracket = 1; 850 break; 851 case ']': 852 in_bracket = 0; 853 break; 854 case '\\': 855 if (i < brace_end - 1) 856 i++; /* skip */ 857 break; 858 } 859 if (pattern[i] == ',' || i == brace_end - 1) { 860 if (in_bracket || brace_level > 0) 861 continue; 862 /* End of a selection, emit an expanded pattern */ 863 864 /* Adjust end index for last selection */ 865 sel_end = (i == brace_end - 1) ? brace_end : i; 866 if (emit_expansion(pattern, brace_start, brace_end, 867 sel_start, sel_end, patternsp, npatternsp) != 0) 868 return -1; 869 /* move on to the next selection */ 870 sel_start = i + 1; 871 continue; 872 } 873 } 874 if (in_bracket || brace_level > 0) { 875 *invalid = 1; 876 return 0; 877 } 878 /* success */ 879 *expanded = 1; 880 return 0; 881 } 882 883 /* Expand braces from pattern. Returns 0 on success, -1 on failure */ 884 static int 885 brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 886 { 887 char *cp, *cp2, **active = NULL, **done = NULL; 888 size_t i, nactive = 0, ndone = 0; 889 int ret = -1, invalid = 0, expanded = 0; 890 891 *patternsp = NULL; 892 *npatternsp = 0; 893 894 /* Start the worklist with the original pattern */ 895 if ((cp = strdup(pattern)) == NULL) 896 return -1; 897 if (append(cp, &active, &nactive) != 0) { 898 free(cp); 899 return -1; 900 } 901 while (nactive > 0) { 902 cp = active[nactive - 1]; 903 nactive--; 904 if (brace_expand_one(cp, &active, &nactive, 905 &expanded, &invalid) == -1) { 906 free(cp); 907 goto fail; 908 } 909 if (invalid) 910 fatal_f("invalid brace pattern \"%s\"", cp); 911 if (expanded) { 912 /* 913 * Current entry expanded to new entries on the 914 * active list; discard the progenitor pattern. 915 */ 916 free(cp); 917 continue; 918 } 919 /* 920 * Pattern did not expand; append the finename component to 921 * the completed list 922 */ 923 if ((cp2 = strrchr(cp, '/')) != NULL) 924 *cp2++ = '\0'; 925 else 926 cp2 = cp; 927 if (append(xstrdup(cp2), &done, &ndone) != 0) { 928 free(cp); 929 goto fail; 930 } 931 free(cp); 932 } 933 /* success */ 934 *patternsp = done; 935 *npatternsp = ndone; 936 done = NULL; 937 ndone = 0; 938 ret = 0; 939 fail: 940 for (i = 0; i < nactive; i++) 941 free(active[i]); 942 free(active); 943 for (i = 0; i < ndone; i++) 944 free(done[i]); 945 free(done); 946 return ret; 947 } 948 949 static struct sftp_conn * 950 do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 951 int *reminp, int *remoutp, int *pidp) 952 { 953 if (sftp_direct == NULL) { 954 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 955 reminp, remoutp, pidp) < 0) 956 return NULL; 957 958 } else { 959 freeargs(&args); 960 addargs(&args, "sftp-server"); 961 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 962 reminp, remoutp, pidp) < 0) 963 return NULL; 964 } 965 return do_init(*reminp, *remoutp, 966 sftp_copy_buflen, sftp_nrequests, limit_kbps); 967 } 968 969 void 970 toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 971 { 972 char *suser = NULL, *host = NULL, *src = NULL; 973 char *bp, *tuser, *thost, *targ; 974 int sport = -1, tport = -1; 975 struct sftp_conn *conn = NULL, *conn2 = NULL; 976 arglist alist; 977 int i, r, status; 978 struct stat sb; 979 u_int j; 980 981 memset(&alist, '\0', sizeof(alist)); 982 alist.list = NULL; 983 984 /* Parse target */ 985 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 986 if (r == -1) { 987 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 988 ++errs; 989 goto out; 990 } 991 if (r != 0) { 992 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 993 &targ) == -1) { 994 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 995 ++errs; 996 goto out; 997 } 998 } 999 1000 /* Parse source files */ 1001 for (i = 0; i < argc - 1; i++) { 1002 free(suser); 1003 free(host); 1004 free(src); 1005 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1006 if (r == -1) { 1007 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1008 ++errs; 1009 continue; 1010 } 1011 if (r != 0) { 1012 parse_user_host_path(argv[i], &suser, &host, &src); 1013 } 1014 if (suser != NULL && !okname(suser)) { 1015 ++errs; 1016 continue; 1017 } 1018 if (host && throughlocal) { /* extended remote to remote */ 1019 if (mode == MODE_SFTP) { 1020 if (remin == -1) { 1021 /* Connect to dest now */ 1022 conn = do_sftp_connect(thost, tuser, 1023 tport, sftp_direct, 1024 &remin, &remout, &do_cmd_pid); 1025 if (conn == NULL) { 1026 fatal("Unable to open " 1027 "destination connection"); 1028 } 1029 debug3_f("origin in %d out %d pid %ld", 1030 remin, remout, (long)do_cmd_pid); 1031 } 1032 /* 1033 * XXX remember suser/host/sport and only 1034 * reconnect if they change between arguments. 1035 * would save reconnections for cases like 1036 * scp -3 hosta:/foo hosta:/bar hostb: 1037 */ 1038 /* Connect to origin now */ 1039 conn2 = do_sftp_connect(host, suser, 1040 sport, sftp_direct, 1041 &remin2, &remout2, &do_cmd_pid2); 1042 if (conn2 == NULL) { 1043 fatal("Unable to open " 1044 "source connection"); 1045 } 1046 debug3_f("destination in %d out %d pid %ld", 1047 remin2, remout2, (long)do_cmd_pid2); 1048 throughlocal_sftp(conn2, conn, src, targ); 1049 (void) close(remin2); 1050 (void) close(remout2); 1051 remin2 = remout2 = -1; 1052 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1053 ++errs; 1054 else if (!WIFEXITED(status) || 1055 WEXITSTATUS(status) != 0) 1056 ++errs; 1057 do_cmd_pid2 = -1; 1058 continue; 1059 } else { 1060 xasprintf(&bp, "%s -f %s%s", cmd, 1061 *src == '-' ? "-- " : "", src); 1062 if (do_cmd(ssh_program, host, suser, sport, 0, 1063 bp, &remin, &remout, &do_cmd_pid) < 0) 1064 exit(1); 1065 free(bp); 1066 xasprintf(&bp, "%s -t %s%s", cmd, 1067 *targ == '-' ? "-- " : "", targ); 1068 if (do_cmd2(thost, tuser, tport, bp, 1069 remin, remout) < 0) 1070 exit(1); 1071 free(bp); 1072 (void) close(remin); 1073 (void) close(remout); 1074 remin = remout = -1; 1075 } 1076 } else if (host) { /* standard remote to remote */ 1077 /* 1078 * Second remote user is passed to first remote side 1079 * via scp command-line. Ensure it contains no obvious 1080 * shell characters. 1081 */ 1082 if (tuser != NULL && !okname(tuser)) { 1083 ++errs; 1084 continue; 1085 } 1086 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1087 /* This would require the remote support URIs */ 1088 fatal("target port not supported with two " 1089 "remote hosts and the -R option"); 1090 } 1091 1092 freeargs(&alist); 1093 addargs(&alist, "%s", ssh_program); 1094 addargs(&alist, "-x"); 1095 addargs(&alist, "-oClearAllForwardings=yes"); 1096 addargs(&alist, "-n"); 1097 for (j = 0; j < remote_remote_args.num; j++) { 1098 addargs(&alist, "%s", 1099 remote_remote_args.list[j]); 1100 } 1101 1102 if (sport != -1) { 1103 addargs(&alist, "-p"); 1104 addargs(&alist, "%d", sport); 1105 } 1106 if (suser) { 1107 addargs(&alist, "-l"); 1108 addargs(&alist, "%s", suser); 1109 } 1110 addargs(&alist, "--"); 1111 addargs(&alist, "%s", host); 1112 addargs(&alist, "%s", cmd); 1113 addargs(&alist, "%s", src); 1114 addargs(&alist, "%s%s%s:%s", 1115 tuser ? tuser : "", tuser ? "@" : "", 1116 thost, targ); 1117 if (do_local_cmd(&alist) != 0) 1118 errs = 1; 1119 } else { /* local to remote */ 1120 if (mode == MODE_SFTP) { 1121 /* no need to glob: already done by shell */ 1122 if (stat(argv[i], &sb) != 0) { 1123 fatal("stat local \"%s\": %s", argv[i], 1124 strerror(errno)); 1125 } 1126 if (remin == -1) { 1127 /* Connect to remote now */ 1128 conn = do_sftp_connect(thost, tuser, 1129 tport, sftp_direct, 1130 &remin, &remout, &do_cmd_pid); 1131 if (conn == NULL) { 1132 fatal("Unable to open sftp " 1133 "connection"); 1134 } 1135 } 1136 1137 /* The protocol */ 1138 source_sftp(1, argv[i], targ, conn); 1139 continue; 1140 } 1141 /* SCP */ 1142 if (remin == -1) { 1143 xasprintf(&bp, "%s -t %s%s", cmd, 1144 *targ == '-' ? "-- " : "", targ); 1145 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1146 bp, &remin, &remout, &do_cmd_pid) < 0) 1147 exit(1); 1148 if (response() < 0) 1149 exit(1); 1150 free(bp); 1151 } 1152 source(1, argv + i); 1153 } 1154 } 1155 out: 1156 if (mode == MODE_SFTP) 1157 free(conn); 1158 free(tuser); 1159 free(thost); 1160 free(targ); 1161 free(suser); 1162 free(host); 1163 free(src); 1164 } 1165 1166 void 1167 tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1168 { 1169 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1170 arglist alist; 1171 struct sftp_conn *conn = NULL; 1172 int i, r, sport = -1; 1173 1174 memset(&alist, '\0', sizeof(alist)); 1175 alist.list = NULL; 1176 1177 for (i = 0; i < argc - 1; i++) { 1178 free(suser); 1179 free(host); 1180 free(src); 1181 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1182 if (r == -1) { 1183 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1184 ++errs; 1185 continue; 1186 } 1187 if (r != 0) 1188 parse_user_host_path(argv[i], &suser, &host, &src); 1189 if (suser != NULL && !okname(suser)) { 1190 ++errs; 1191 continue; 1192 } 1193 if (!host) { /* Local to local. */ 1194 freeargs(&alist); 1195 addargs(&alist, "%s", _PATH_CP); 1196 if (iamrecursive) 1197 addargs(&alist, "-r"); 1198 if (pflag) 1199 addargs(&alist, "-p"); 1200 addargs(&alist, "--"); 1201 addargs(&alist, "%s", argv[i]); 1202 addargs(&alist, "%s", argv[argc-1]); 1203 if (do_local_cmd(&alist)) 1204 ++errs; 1205 continue; 1206 } 1207 /* Remote to local. */ 1208 if (mode == MODE_SFTP) { 1209 conn = do_sftp_connect(host, suser, sport, 1210 sftp_direct, &remin, &remout, &do_cmd_pid); 1211 if (conn == NULL) { 1212 error("sftp connection failed"); 1213 ++errs; 1214 continue; 1215 } 1216 1217 /* The protocol */ 1218 sink_sftp(1, argv[argc - 1], src, conn); 1219 1220 free(conn); 1221 (void) close(remin); 1222 (void) close(remout); 1223 remin = remout = -1; 1224 continue; 1225 } 1226 /* SCP */ 1227 xasprintf(&bp, "%s -f %s%s", 1228 cmd, *src == '-' ? "-- " : "", src); 1229 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1230 &remin, &remout, &do_cmd_pid) < 0) { 1231 free(bp); 1232 ++errs; 1233 continue; 1234 } 1235 free(bp); 1236 sink(1, argv + argc - 1, src); 1237 (void) close(remin); 1238 remin = remout = -1; 1239 } 1240 free(suser); 1241 free(host); 1242 free(src); 1243 } 1244 1245 /* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1246 static char * 1247 prepare_remote_path(struct sftp_conn *conn, const char *path) 1248 { 1249 size_t nslash; 1250 1251 /* Handle ~ prefixed paths */ 1252 if (*path == '\0' || strcmp(path, "~") == 0) 1253 return xstrdup("."); 1254 if (*path != '~') 1255 return xstrdup(path); 1256 if (strncmp(path, "~/", 2) == 0) { 1257 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1258 return xstrdup("."); 1259 return xstrdup(path + 2 + nslash); 1260 } 1261 if (can_expand_path(conn)) 1262 return do_expand_path(conn, path); 1263 /* No protocol extension */ 1264 error("server expand-path extension is required " 1265 "for ~user paths in SFTP mode"); 1266 return NULL; 1267 } 1268 1269 void 1270 source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1271 { 1272 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1273 int src_is_dir, target_is_dir; 1274 Attrib a; 1275 struct stat st; 1276 1277 memset(&a, '\0', sizeof(a)); 1278 if (stat(src, &st) != 0) 1279 fatal("stat local \"%s\": %s", src, strerror(errno)); 1280 src_is_dir = S_ISDIR(st.st_mode); 1281 if ((filename = basename(src)) == NULL) 1282 fatal("basename \"%s\": %s", src, strerror(errno)); 1283 1284 /* 1285 * No need to glob here - the local shell already took care of 1286 * the expansions 1287 */ 1288 if ((target = prepare_remote_path(conn, targ)) == NULL) 1289 cleanup_exit(255); 1290 target_is_dir = remote_is_dir(conn, target); 1291 if (targetshouldbedirectory && !target_is_dir) { 1292 debug("target directory \"%s\" does not exist", target); 1293 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1294 a.perm = st.st_mode | 0700; /* ensure writable */ 1295 if (do_mkdir(conn, target, &a, 1) != 0) 1296 cleanup_exit(255); /* error already logged */ 1297 target_is_dir = 1; 1298 } 1299 if (target_is_dir) 1300 abs_dst = path_append(target, filename); 1301 else { 1302 abs_dst = target; 1303 target = NULL; 1304 } 1305 debug3_f("copying local %s to remote %s", src, abs_dst); 1306 1307 if (src_is_dir && iamrecursive) { 1308 if (upload_dir(conn, src, abs_dst, pflag, 1309 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1310 error("failed to upload directory %s to %s", src, targ); 1311 errs = 1; 1312 } 1313 } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1314 error("failed to upload file %s to %s", src, targ); 1315 errs = 1; 1316 } 1317 1318 free(abs_dst); 1319 free(target); 1320 } 1321 1322 void 1323 source(int argc, char **argv) 1324 { 1325 struct stat stb; 1326 static BUF buffer; 1327 BUF *bp; 1328 off_t i, statbytes; 1329 size_t amt, nr; 1330 int fd = -1, haderr, indx; 1331 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1332 int len; 1333 1334 for (indx = 0; indx < argc; ++indx) { 1335 name = argv[indx]; 1336 statbytes = 0; 1337 len = strlen(name); 1338 while (len > 1 && name[len-1] == '/') 1339 name[--len] = '\0'; 1340 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1341 goto syserr; 1342 if (strchr(name, '\n') != NULL) { 1343 strnvis(encname, name, sizeof(encname), VIS_NL); 1344 name = encname; 1345 } 1346 if (fstat(fd, &stb) == -1) { 1347 syserr: run_err("%s: %s", name, strerror(errno)); 1348 goto next; 1349 } 1350 if (stb.st_size < 0) { 1351 run_err("%s: %s", name, "Negative file size"); 1352 goto next; 1353 } 1354 unset_nonblock(fd); 1355 switch (stb.st_mode & S_IFMT) { 1356 case S_IFREG: 1357 break; 1358 case S_IFDIR: 1359 if (iamrecursive) { 1360 rsource(name, &stb); 1361 goto next; 1362 } 1363 /* FALLTHROUGH */ 1364 default: 1365 run_err("%s: not a regular file", name); 1366 goto next; 1367 } 1368 if ((last = strrchr(name, '/')) == NULL) 1369 last = name; 1370 else 1371 ++last; 1372 curfile = last; 1373 if (pflag) { 1374 if (do_times(remout, verbose_mode, &stb) < 0) 1375 goto next; 1376 } 1377 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1378 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1379 (u_int) (stb.st_mode & FILEMODEMASK), 1380 (long long)stb.st_size, last); 1381 if (verbose_mode) 1382 fmprintf(stderr, "Sending file modes: %s", buf); 1383 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1384 if (response() < 0) 1385 goto next; 1386 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1387 next: if (fd != -1) { 1388 (void) close(fd); 1389 fd = -1; 1390 } 1391 continue; 1392 } 1393 if (showprogress) 1394 start_progress_meter(curfile, stb.st_size, &statbytes); 1395 set_nonblock(remout); 1396 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1397 amt = bp->cnt; 1398 if (i + (off_t)amt > stb.st_size) 1399 amt = stb.st_size - i; 1400 if (!haderr) { 1401 if ((nr = atomicio(read, fd, 1402 bp->buf, amt)) != amt) { 1403 haderr = errno; 1404 memset(bp->buf + nr, 0, amt - nr); 1405 } 1406 } 1407 /* Keep writing after error to retain sync */ 1408 if (haderr) { 1409 (void)atomicio(vwrite, remout, bp->buf, amt); 1410 memset(bp->buf, 0, amt); 1411 continue; 1412 } 1413 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1414 &statbytes) != amt) 1415 haderr = errno; 1416 } 1417 unset_nonblock(remout); 1418 1419 if (fd != -1) { 1420 if (close(fd) == -1 && !haderr) 1421 haderr = errno; 1422 fd = -1; 1423 } 1424 if (!haderr) 1425 (void) atomicio(vwrite, remout, "", 1); 1426 else 1427 run_err("%s: %s", name, strerror(haderr)); 1428 (void) response(); 1429 if (showprogress) 1430 stop_progress_meter(); 1431 } 1432 } 1433 1434 void 1435 rsource(char *name, struct stat *statp) 1436 { 1437 DIR *dirp; 1438 struct dirent *dp; 1439 char *last, *vect[1], path[PATH_MAX]; 1440 1441 if (!(dirp = opendir(name))) { 1442 run_err("%s: %s", name, strerror(errno)); 1443 return; 1444 } 1445 last = strrchr(name, '/'); 1446 if (last == NULL) 1447 last = name; 1448 else 1449 last++; 1450 if (pflag) { 1451 if (do_times(remout, verbose_mode, statp) < 0) { 1452 closedir(dirp); 1453 return; 1454 } 1455 } 1456 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1457 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1458 if (verbose_mode) 1459 fmprintf(stderr, "Entering directory: %s", path); 1460 (void) atomicio(vwrite, remout, path, strlen(path)); 1461 if (response() < 0) { 1462 closedir(dirp); 1463 return; 1464 } 1465 while ((dp = readdir(dirp)) != NULL) { 1466 if (dp->d_ino == 0) 1467 continue; 1468 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1469 continue; 1470 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1471 run_err("%s/%s: name too long", name, dp->d_name); 1472 continue; 1473 } 1474 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1475 vect[0] = path; 1476 source(1, vect); 1477 } 1478 (void) closedir(dirp); 1479 (void) atomicio(vwrite, remout, "E\n", 2); 1480 (void) response(); 1481 } 1482 1483 void 1484 sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1485 { 1486 char *abs_src = NULL; 1487 char *abs_dst = NULL; 1488 glob_t g; 1489 char *filename, *tmp = NULL; 1490 int i, r, err = 0, dst_is_dir; 1491 struct stat st; 1492 1493 memset(&g, 0, sizeof(g)); 1494 1495 /* 1496 * Here, we need remote glob as SFTP can not depend on remote shell 1497 * expansions 1498 */ 1499 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1500 err = -1; 1501 goto out; 1502 } 1503 1504 debug3_f("copying remote %s to local %s", abs_src, dst); 1505 if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK, 1506 NULL, &g)) != 0) { 1507 if (r == GLOB_NOSPACE) 1508 error("%s: too many glob matches", src); 1509 else 1510 error("%s: %s", src, strerror(ENOENT)); 1511 err = -1; 1512 goto out; 1513 } 1514 1515 /* Did we actually get any matches back from the glob? */ 1516 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1517 /* 1518 * If nothing matched but a path returned, then it's probably 1519 * a GLOB_NOCHECK result. Check whether the unglobbed path 1520 * exists so we can give a nice error message early. 1521 */ 1522 if (do_stat(conn, g.gl_pathv[0], 1) == NULL) { 1523 error("%s: %s", src, strerror(ENOENT)); 1524 err = -1; 1525 goto out; 1526 } 1527 } 1528 1529 if ((r = stat(dst, &st)) != 0) 1530 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1531 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1532 1533 if (g.gl_matchc > 1 && !dst_is_dir) { 1534 if (r == 0) { 1535 error("Multiple files match pattern, but destination " 1536 "\"%s\" is not a directory", dst); 1537 err = -1; 1538 goto out; 1539 } 1540 debug2_f("creating destination \"%s\"", dst); 1541 if (mkdir(dst, 0777) != 0) { 1542 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1543 err = -1; 1544 goto out; 1545 } 1546 dst_is_dir = 1; 1547 } 1548 1549 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1550 tmp = xstrdup(g.gl_pathv[i]); 1551 if ((filename = basename(tmp)) == NULL) { 1552 error("basename %s: %s", tmp, strerror(errno)); 1553 err = -1; 1554 goto out; 1555 } 1556 1557 if (dst_is_dir) 1558 abs_dst = path_append(dst, filename); 1559 else 1560 abs_dst = xstrdup(dst); 1561 1562 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1563 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1564 if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL, 1565 pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1566 err = -1; 1567 } else { 1568 if (do_download(conn, g.gl_pathv[i], abs_dst, NULL, 1569 pflag, 0, 0, 1) == -1) 1570 err = -1; 1571 } 1572 free(abs_dst); 1573 abs_dst = NULL; 1574 free(tmp); 1575 tmp = NULL; 1576 } 1577 1578 out: 1579 free(abs_src); 1580 free(tmp); 1581 globfree(&g); 1582 if (err == -1) 1583 errs = 1; 1584 } 1585 1586 1587 #define TYPE_OVERFLOW(type, val) \ 1588 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1589 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1590 (sizeof(type) != 4 && sizeof(type) != 8)) 1591 1592 void 1593 sink(int argc, char **argv, const char *src) 1594 { 1595 static BUF buffer; 1596 struct stat stb; 1597 BUF *bp; 1598 off_t i; 1599 size_t j, count; 1600 int amt, exists, first, ofd; 1601 mode_t mode, omode, mask; 1602 off_t size, statbytes; 1603 unsigned long long ull; 1604 int setimes, targisdir, wrerr; 1605 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1606 char **patterns = NULL; 1607 size_t n, npatterns = 0; 1608 struct timeval tv[2]; 1609 1610 #define atime tv[0] 1611 #define mtime tv[1] 1612 #define SCREWUP(str) { why = str; goto screwup; } 1613 1614 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1615 SCREWUP("Unexpected off_t/time_t size"); 1616 1617 setimes = targisdir = 0; 1618 mask = umask(0); 1619 if (!pflag) 1620 (void) umask(mask); 1621 if (argc != 1) { 1622 run_err("ambiguous target"); 1623 exit(1); 1624 } 1625 targ = *argv; 1626 if (targetshouldbedirectory) 1627 verifydir(targ); 1628 1629 (void) atomicio(vwrite, remout, "", 1); 1630 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1631 targisdir = 1; 1632 if (src != NULL && !iamrecursive && !Tflag) { 1633 /* 1634 * Prepare to try to restrict incoming filenames to match 1635 * the requested destination file glob. 1636 */ 1637 if (brace_expand(src, &patterns, &npatterns) != 0) 1638 fatal_f("could not expand pattern"); 1639 } 1640 for (first = 1;; first = 0) { 1641 cp = buf; 1642 if (atomicio(read, remin, cp, 1) != 1) 1643 goto done; 1644 if (*cp++ == '\n') 1645 SCREWUP("unexpected <newline>"); 1646 do { 1647 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1648 SCREWUP("lost connection"); 1649 *cp++ = ch; 1650 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1651 *cp = 0; 1652 if (verbose_mode) 1653 fmprintf(stderr, "Sink: %s", buf); 1654 1655 if (buf[0] == '\01' || buf[0] == '\02') { 1656 if (iamremote == 0) { 1657 (void) snmprintf(visbuf, sizeof(visbuf), 1658 NULL, "%s", buf + 1); 1659 (void) atomicio(vwrite, STDERR_FILENO, 1660 visbuf, strlen(visbuf)); 1661 } 1662 if (buf[0] == '\02') 1663 exit(1); 1664 ++errs; 1665 continue; 1666 } 1667 if (buf[0] == 'E') { 1668 (void) atomicio(vwrite, remout, "", 1); 1669 goto done; 1670 } 1671 if (ch == '\n') 1672 *--cp = 0; 1673 1674 cp = buf; 1675 if (*cp == 'T') { 1676 setimes++; 1677 cp++; 1678 if (!isdigit((unsigned char)*cp)) 1679 SCREWUP("mtime.sec not present"); 1680 ull = strtoull(cp, &cp, 10); 1681 if (!cp || *cp++ != ' ') 1682 SCREWUP("mtime.sec not delimited"); 1683 if (TYPE_OVERFLOW(time_t, ull)) 1684 setimes = 0; /* out of range */ 1685 mtime.tv_sec = ull; 1686 mtime.tv_usec = strtol(cp, &cp, 10); 1687 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1688 mtime.tv_usec > 999999) 1689 SCREWUP("mtime.usec not delimited"); 1690 if (!isdigit((unsigned char)*cp)) 1691 SCREWUP("atime.sec not present"); 1692 ull = strtoull(cp, &cp, 10); 1693 if (!cp || *cp++ != ' ') 1694 SCREWUP("atime.sec not delimited"); 1695 if (TYPE_OVERFLOW(time_t, ull)) 1696 setimes = 0; /* out of range */ 1697 atime.tv_sec = ull; 1698 atime.tv_usec = strtol(cp, &cp, 10); 1699 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1700 atime.tv_usec > 999999) 1701 SCREWUP("atime.usec not delimited"); 1702 (void) atomicio(vwrite, remout, "", 1); 1703 continue; 1704 } 1705 if (*cp != 'C' && *cp != 'D') { 1706 /* 1707 * Check for the case "rcp remote:foo\* local:bar". 1708 * In this case, the line "No match." can be returned 1709 * by the shell before the rcp command on the remote is 1710 * executed so the ^Aerror_message convention isn't 1711 * followed. 1712 */ 1713 if (first) { 1714 run_err("%s", cp); 1715 exit(1); 1716 } 1717 SCREWUP("expected control record"); 1718 } 1719 mode = 0; 1720 for (++cp; cp < buf + 5; cp++) { 1721 if (*cp < '0' || *cp > '7') 1722 SCREWUP("bad mode"); 1723 mode = (mode << 3) | (*cp - '0'); 1724 } 1725 if (!pflag) 1726 mode &= ~mask; 1727 if (*cp++ != ' ') 1728 SCREWUP("mode not delimited"); 1729 1730 if (!isdigit((unsigned char)*cp)) 1731 SCREWUP("size not present"); 1732 ull = strtoull(cp, &cp, 10); 1733 if (!cp || *cp++ != ' ') 1734 SCREWUP("size not delimited"); 1735 if (TYPE_OVERFLOW(off_t, ull)) 1736 SCREWUP("size out of range"); 1737 size = (off_t)ull; 1738 1739 if (*cp == '\0' || strchr(cp, '/') != NULL || 1740 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1741 run_err("error: unexpected filename: %s", cp); 1742 exit(1); 1743 } 1744 if (npatterns > 0) { 1745 for (n = 0; n < npatterns; n++) { 1746 if (strcmp(patterns[n], cp) == 0 || 1747 fnmatch(patterns[n], cp, 0) == 0) 1748 break; 1749 } 1750 if (n >= npatterns) 1751 SCREWUP("filename does not match request"); 1752 } 1753 if (targisdir) { 1754 static char *namebuf; 1755 static size_t cursize; 1756 size_t need; 1757 1758 need = strlen(targ) + strlen(cp) + 250; 1759 if (need > cursize) { 1760 free(namebuf); 1761 namebuf = xmalloc(need); 1762 cursize = need; 1763 } 1764 (void) snprintf(namebuf, need, "%s%s%s", targ, 1765 strcmp(targ, "/") ? "/" : "", cp); 1766 np = namebuf; 1767 } else 1768 np = targ; 1769 curfile = cp; 1770 exists = stat(np, &stb) == 0; 1771 if (buf[0] == 'D') { 1772 int mod_flag = pflag; 1773 if (!iamrecursive) 1774 SCREWUP("received directory without -r"); 1775 if (exists) { 1776 if (!S_ISDIR(stb.st_mode)) { 1777 errno = ENOTDIR; 1778 goto bad; 1779 } 1780 if (pflag) 1781 (void) chmod(np, mode); 1782 } else { 1783 /* Handle copying from a read-only directory */ 1784 mod_flag = 1; 1785 if (mkdir(np, mode | S_IRWXU) == -1) 1786 goto bad; 1787 } 1788 vect[0] = xstrdup(np); 1789 sink(1, vect, src); 1790 if (setimes) { 1791 setimes = 0; 1792 (void) utimes(vect[0], tv); 1793 } 1794 if (mod_flag) 1795 (void) chmod(vect[0], mode); 1796 free(vect[0]); 1797 continue; 1798 } 1799 omode = mode; 1800 mode |= S_IWUSR; 1801 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1802 bad: run_err("%s: %s", np, strerror(errno)); 1803 continue; 1804 } 1805 (void) atomicio(vwrite, remout, "", 1); 1806 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1807 (void) close(ofd); 1808 continue; 1809 } 1810 cp = bp->buf; 1811 wrerr = 0; 1812 1813 /* 1814 * NB. do not use run_err() unless immediately followed by 1815 * exit() below as it may send a spurious reply that might 1816 * desyncronise us from the peer. Use note_err() instead. 1817 */ 1818 statbytes = 0; 1819 if (showprogress) 1820 start_progress_meter(curfile, size, &statbytes); 1821 set_nonblock(remin); 1822 for (count = i = 0; i < size; i += bp->cnt) { 1823 amt = bp->cnt; 1824 if (i + amt > size) 1825 amt = size - i; 1826 count += amt; 1827 do { 1828 j = atomicio6(read, remin, cp, amt, 1829 scpio, &statbytes); 1830 if (j == 0) { 1831 run_err("%s", j != EPIPE ? 1832 strerror(errno) : 1833 "dropped connection"); 1834 exit(1); 1835 } 1836 amt -= j; 1837 cp += j; 1838 } while (amt > 0); 1839 1840 if (count == bp->cnt) { 1841 /* Keep reading so we stay sync'd up. */ 1842 if (!wrerr) { 1843 if (atomicio(vwrite, ofd, bp->buf, 1844 count) != count) { 1845 note_err("%s: %s", np, 1846 strerror(errno)); 1847 wrerr = 1; 1848 } 1849 } 1850 count = 0; 1851 cp = bp->buf; 1852 } 1853 } 1854 unset_nonblock(remin); 1855 if (count != 0 && !wrerr && 1856 atomicio(vwrite, ofd, bp->buf, count) != count) { 1857 note_err("%s: %s", np, strerror(errno)); 1858 wrerr = 1; 1859 } 1860 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1861 ftruncate(ofd, size) != 0) 1862 note_err("%s: truncate: %s", np, strerror(errno)); 1863 if (pflag) { 1864 if (exists || omode != mode) 1865 if (fchmod(ofd, omode)) { 1866 note_err("%s: set mode: %s", 1867 np, strerror(errno)); 1868 } 1869 } else { 1870 if (!exists && omode != mode) 1871 if (fchmod(ofd, omode & ~mask)) { 1872 note_err("%s: set mode: %s", 1873 np, strerror(errno)); 1874 } 1875 } 1876 if (close(ofd) == -1) 1877 note_err("%s: close: %s", np, strerror(errno)); 1878 (void) response(); 1879 if (showprogress) 1880 stop_progress_meter(); 1881 if (setimes && !wrerr) { 1882 setimes = 0; 1883 if (utimes(np, tv) == -1) { 1884 note_err("%s: set times: %s", 1885 np, strerror(errno)); 1886 } 1887 } 1888 /* If no error was noted then signal success for this file */ 1889 if (note_err(NULL) == 0) 1890 (void) atomicio(vwrite, remout, "", 1); 1891 } 1892 done: 1893 for (n = 0; n < npatterns; n++) 1894 free(patterns[n]); 1895 free(patterns); 1896 return; 1897 screwup: 1898 for (n = 0; n < npatterns; n++) 1899 free(patterns[n]); 1900 free(patterns); 1901 run_err("protocol error: %s", why); 1902 exit(1); 1903 } 1904 1905 void 1906 throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1907 char *src, char *targ) 1908 { 1909 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1910 char *abs_src = NULL, *tmp = NULL; 1911 glob_t g; 1912 int i, r, targetisdir, err = 0; 1913 1914 if ((filename = basename(src)) == NULL) 1915 fatal("basename %s: %s", src, strerror(errno)); 1916 1917 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1918 (target = prepare_remote_path(to, targ)) == NULL) 1919 cleanup_exit(255); 1920 memset(&g, 0, sizeof(g)); 1921 1922 targetisdir = remote_is_dir(to, target); 1923 if (!targetisdir && targetshouldbedirectory) { 1924 error("%s: destination is not a directory", targ); 1925 err = -1; 1926 goto out; 1927 } 1928 1929 debug3_f("copying remote %s to remote %s", abs_src, target); 1930 if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK, 1931 NULL, &g)) != 0) { 1932 if (r == GLOB_NOSPACE) 1933 error("%s: too many glob matches", src); 1934 else 1935 error("%s: %s", src, strerror(ENOENT)); 1936 err = -1; 1937 goto out; 1938 } 1939 1940 /* Did we actually get any matches back from the glob? */ 1941 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1942 /* 1943 * If nothing matched but a path returned, then it's probably 1944 * a GLOB_NOCHECK result. Check whether the unglobbed path 1945 * exists so we can give a nice error message early. 1946 */ 1947 if (do_stat(from, g.gl_pathv[0], 1) == NULL) { 1948 error("%s: %s", src, strerror(ENOENT)); 1949 err = -1; 1950 goto out; 1951 } 1952 } 1953 1954 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1955 tmp = xstrdup(g.gl_pathv[i]); 1956 if ((filename = basename(tmp)) == NULL) { 1957 error("basename %s: %s", tmp, strerror(errno)); 1958 err = -1; 1959 goto out; 1960 } 1961 1962 if (targetisdir) 1963 abs_dst = path_append(target, filename); 1964 else 1965 abs_dst = xstrdup(target); 1966 1967 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1968 if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1969 if (crossload_dir(from, to, g.gl_pathv[i], abs_dst, 1970 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 1971 err = -1; 1972 } else { 1973 if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL, 1974 pflag) == -1) 1975 err = -1; 1976 } 1977 free(abs_dst); 1978 abs_dst = NULL; 1979 free(tmp); 1980 tmp = NULL; 1981 } 1982 1983 out: 1984 free(abs_src); 1985 free(abs_dst); 1986 free(target); 1987 free(tmp); 1988 globfree(&g); 1989 if (err == -1) 1990 errs = 1; 1991 } 1992 1993 int 1994 response(void) 1995 { 1996 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 1997 1998 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 1999 lostconn(0); 2000 2001 cp = rbuf; 2002 switch (resp) { 2003 case 0: /* ok */ 2004 return (0); 2005 default: 2006 *cp++ = resp; 2007 /* FALLTHROUGH */ 2008 case 1: /* error, followed by error msg */ 2009 case 2: /* fatal error, "" */ 2010 do { 2011 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 2012 lostconn(0); 2013 *cp++ = ch; 2014 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 2015 2016 if (!iamremote) { 2017 cp[-1] = '\0'; 2018 (void) snmprintf(visbuf, sizeof(visbuf), 2019 NULL, "%s\n", rbuf); 2020 (void) atomicio(vwrite, STDERR_FILENO, 2021 visbuf, strlen(visbuf)); 2022 } 2023 ++errs; 2024 if (resp == 1) 2025 return (-1); 2026 exit(1); 2027 } 2028 /* NOTREACHED */ 2029 } 2030 2031 void 2032 usage(void) 2033 { 2034 (void) fprintf(stderr, 2035 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2036 " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n" 2037 " [-P port] [-S program] [-X sftp_option] source ... target\n"); 2038 exit(1); 2039 } 2040 2041 void 2042 run_err(const char *fmt,...) 2043 { 2044 static FILE *fp; 2045 va_list ap; 2046 2047 ++errs; 2048 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2049 (void) fprintf(fp, "%c", 0x01); 2050 (void) fprintf(fp, "scp: "); 2051 va_start(ap, fmt); 2052 (void) vfprintf(fp, fmt, ap); 2053 va_end(ap); 2054 (void) fprintf(fp, "\n"); 2055 (void) fflush(fp); 2056 } 2057 2058 if (!iamremote) { 2059 va_start(ap, fmt); 2060 vfmprintf(stderr, fmt, ap); 2061 va_end(ap); 2062 fprintf(stderr, "\n"); 2063 } 2064 } 2065 2066 /* 2067 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2068 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2069 * any active error at the end of the transfer. 2070 */ 2071 int 2072 note_err(const char *fmt, ...) 2073 { 2074 static char *emsg; 2075 va_list ap; 2076 2077 /* Replay any previously-noted error */ 2078 if (fmt == NULL) { 2079 if (emsg == NULL) 2080 return 0; 2081 run_err("%s", emsg); 2082 free(emsg); 2083 emsg = NULL; 2084 return -1; 2085 } 2086 2087 errs++; 2088 /* Prefer first-noted error */ 2089 if (emsg != NULL) 2090 return -1; 2091 2092 va_start(ap, fmt); 2093 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2094 va_end(ap); 2095 return -1; 2096 } 2097 2098 void 2099 verifydir(char *cp) 2100 { 2101 struct stat stb; 2102 2103 if (!stat(cp, &stb)) { 2104 if (S_ISDIR(stb.st_mode)) 2105 return; 2106 errno = ENOTDIR; 2107 } 2108 run_err("%s: %s", cp, strerror(errno)); 2109 killchild(0); 2110 } 2111 2112 int 2113 okname(char *cp0) 2114 { 2115 int c; 2116 char *cp; 2117 2118 cp = cp0; 2119 do { 2120 c = (int)*cp; 2121 if (c & 0200) 2122 goto bad; 2123 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2124 switch (c) { 2125 case '\'': 2126 case '"': 2127 case '`': 2128 case ' ': 2129 case '#': 2130 goto bad; 2131 default: 2132 break; 2133 } 2134 } 2135 } while (*++cp); 2136 return (1); 2137 2138 bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2139 return (0); 2140 } 2141 2142 BUF * 2143 allocbuf(BUF *bp, int fd, int blksize) 2144 { 2145 size_t size; 2146 struct stat stb; 2147 2148 if (fstat(fd, &stb) == -1) { 2149 run_err("fstat: %s", strerror(errno)); 2150 return (0); 2151 } 2152 size = ROUNDUP(stb.st_blksize, blksize); 2153 if (size == 0) 2154 size = blksize; 2155 if (bp->cnt >= size) 2156 return (bp); 2157 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2158 bp->cnt = size; 2159 return (bp); 2160 } 2161 2162 void 2163 lostconn(int signo) 2164 { 2165 if (!iamremote) 2166 (void)write(STDERR_FILENO, "lost connection\n", 16); 2167 if (signo) 2168 _exit(1); 2169 else 2170 exit(1); 2171 } 2172 2173 void 2174 cleanup_exit(int i) 2175 { 2176 if (remin > 0) 2177 close(remin); 2178 if (remout > 0) 2179 close(remout); 2180 if (remin2 > 0) 2181 close(remin2); 2182 if (remout2 > 0) 2183 close(remout2); 2184 if (do_cmd_pid > 0) 2185 (void)waitpid(do_cmd_pid, NULL, 0); 2186 if (do_cmd_pid2 > 0) 2187 (void)waitpid(do_cmd_pid2, NULL, 0); 2188 exit(i); 2189 } 2190