1/* $OpenBSD: scp.c,v 1.260 2023/10/11 05:42:08 djm Exp $ */ 2/* 3 * scp - secure remote copy. This is basically patched BSD rcp which 4 * uses ssh to do the data transfer (instead of using rcmd). 5 * 6 * NOTE: This version should NOT be suid root. (This uses ssh to 7 * do the transfer and ssh has the necessary privileges.) 8 * 9 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi> 10 * 11 * As far as I am concerned, the code I have written for this software 12 * can be used freely for any purpose. Any derived versions of this 13 * software must be clearly marked as such, and if the derived work is 14 * incompatible with the protocol description in the RFC file, it must be 15 * called by a name other than "ssh" or "Secure Shell". 16 */ 17/* 18 * Copyright (c) 1999 Theo de Raadt. All rights reserved. 19 * Copyright (c) 1999 Aaron Campbell. All rights reserved. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 31 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42/* 43 * Parts from: 44 * 45 * Copyright (c) 1983, 1990, 1992, 1993, 1995 46 * The Regents of the University of California. All rights reserved. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. Neither the name of the University nor the names of its contributors 57 * may be used to endorse or promote products derived from this software 58 * without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 */ 73 74#include <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 117int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *); 118int do_cmd2(char *, char *, int, char *, int, int); 119 120/* Struct for addargs */ 121arglist args; 122arglist remote_remote_args; 123 124/* Bandwidth limit */ 125long long limit_kbps = 0; 126struct bwlimit bwlimit; 127 128/* Name of current file being transferred. */ 129char *curfile; 130 131/* This is set to non-zero to enable verbose mode. */ 132int verbose_mode = 0; 133LogLevel log_level = SYSLOG_LEVEL_INFO; 134 135/* This is set to zero if the progressmeter is not desired. */ 136int showprogress = 1; 137 138/* 139 * This is set to non-zero if remote-remote copy should be piped 140 * through this process. 141 */ 142int throughlocal = 1; 143 144/* Non-standard port to use for the ssh connection or -1. */ 145int sshport = -1; 146 147/* This is the program to execute for the secured connection. ("ssh" or -S) */ 148char *ssh_program = _PATH_SSH_PROGRAM; 149 150/* This is used to store the pid of ssh_program */ 151pid_t do_cmd_pid = -1; 152pid_t do_cmd_pid2 = -1; 153 154/* SFTP copy parameters */ 155size_t sftp_copy_buflen; 156size_t sftp_nrequests; 157 158/* Needed for sftp */ 159volatile sig_atomic_t interrupted = 0; 160 161int sftp_glob(struct sftp_conn *, const char *, int, 162 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ 163 164static void 165killchild(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 181static void 182suspone(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 194static void 195suspchild(int signo) 196{ 197 suspone(do_cmd_pid, signo); 198 suspone(do_cmd_pid2, signo); 199 kill(getpid(), SIGSTOP); 200} 201 202static int 203do_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 250int 251do_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 */ 322int 323do_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 372typedef struct { 373 size_t cnt; 374 char *buf; 375} BUF; 376 377BUF *allocbuf(BUF *, int, int); 378void lostconn(int); 379int okname(char *); 380void run_err(const char *,...) 381 __attribute__((__format__ (printf, 1, 2))) 382 __attribute__((__nonnull__ (1))); 383int note_err(const char *,...) 384 __attribute__((__format__ (printf, 1, 2))); 385void verifydir(char *); 386 387struct passwd *pwd; 388uid_t userid; 389int errs, remin, remout, remin2, remout2; 390int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory; 391 392#define CMDNEEDS 64 393char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 394 395enum scp_mode_e { 396 MODE_SCP, 397 MODE_SFTP 398}; 399 400int response(void); 401void rsource(char *, struct stat *); 402void sink(int, char *[], const char *); 403void source(int, char *[]); 404void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct); 405void toremote(int, char *[], enum scp_mode_e, char *sftp_direct); 406void usage(void); 407 408void source_sftp(int, char *, char *, struct sftp_conn *); 409void sink_sftp(int, char *, const char *, struct sftp_conn *); 410void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *, 411 char *, char *); 412 413int 414main(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 */ 660static int 661scpio(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 672static int 673do_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 690static int 691parse_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 */ 703static int 704append(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 */ 720static int 721find_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 */ 775static int 776emit_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 size_t pattern_len; 781 int o = 0, tail_len; 782 783 if ((pattern_len = strlen(pattern)) == 0 || pattern_len >= INT_MAX) 784 return -1; 785 786 tail_len = strlen(pattern + brace_end + 1); 787 if ((cp = malloc(brace_start + (sel_end - sel_start) + 788 tail_len + 1)) == NULL) 789 return -1; 790 791 /* Pattern before initial brace */ 792 if (brace_start > 0) { 793 memcpy(cp, pattern, brace_start); 794 o = brace_start; 795 } 796 /* Current braced selection */ 797 if (sel_end - sel_start > 0) { 798 memcpy(cp + o, pattern + sel_start, 799 sel_end - sel_start); 800 o += sel_end - sel_start; 801 } 802 /* Remainder of pattern after closing brace */ 803 if (tail_len > 0) { 804 memcpy(cp + o, pattern + brace_end + 1, tail_len); 805 o += tail_len; 806 } 807 cp[o] = '\0'; 808 if (append(cp, patternsp, npatternsp) != 0) { 809 free(cp); 810 return -1; 811 } 812 return 0; 813} 814 815/* 816 * Expand the first encountered brace in pattern, appending the expanded 817 * patterns it yielded to the *patternsp array. 818 * 819 * Returns 0 on success or -1 on allocation failure. 820 * 821 * Signals whether expansion was performed via *expanded and whether 822 * pattern was invalid via *invalid. 823 */ 824static int 825brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp, 826 int *expanded, int *invalid) 827{ 828 int i; 829 int in_bracket, brace_start, brace_end, brace_level; 830 int sel_start, sel_end; 831 832 *invalid = *expanded = 0; 833 834 if (find_brace(pattern, &brace_start, &brace_end) != 0) { 835 *invalid = 1; 836 return 0; 837 } else if (brace_start == -1) 838 return 0; 839 840 in_bracket = brace_level = 0; 841 for (i = sel_start = brace_start + 1; i < brace_end; i++) { 842 switch (pattern[i]) { 843 case '{': 844 if (in_bracket) 845 break; 846 brace_level++; 847 break; 848 case '}': 849 if (in_bracket) 850 break; 851 brace_level--; 852 break; 853 case '[': 854 in_bracket = 1; 855 break; 856 case ']': 857 in_bracket = 0; 858 break; 859 case '\\': 860 if (i < brace_end - 1) 861 i++; /* skip */ 862 break; 863 } 864 if (pattern[i] == ',' || i == brace_end - 1) { 865 if (in_bracket || brace_level > 0) 866 continue; 867 /* End of a selection, emit an expanded pattern */ 868 869 /* Adjust end index for last selection */ 870 sel_end = (i == brace_end - 1) ? brace_end : i; 871 if (emit_expansion(pattern, brace_start, brace_end, 872 sel_start, sel_end, patternsp, npatternsp) != 0) 873 return -1; 874 /* move on to the next selection */ 875 sel_start = i + 1; 876 continue; 877 } 878 } 879 if (in_bracket || brace_level > 0) { 880 *invalid = 1; 881 return 0; 882 } 883 /* success */ 884 *expanded = 1; 885 return 0; 886} 887 888/* Expand braces from pattern. Returns 0 on success, -1 on failure */ 889static int 890brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp) 891{ 892 char *cp, *cp2, **active = NULL, **done = NULL; 893 size_t i, nactive = 0, ndone = 0; 894 int ret = -1, invalid = 0, expanded = 0; 895 896 *patternsp = NULL; 897 *npatternsp = 0; 898 899 /* Start the worklist with the original pattern */ 900 if ((cp = strdup(pattern)) == NULL) 901 return -1; 902 if (append(cp, &active, &nactive) != 0) { 903 free(cp); 904 return -1; 905 } 906 while (nactive > 0) { 907 cp = active[nactive - 1]; 908 nactive--; 909 if (brace_expand_one(cp, &active, &nactive, 910 &expanded, &invalid) == -1) { 911 free(cp); 912 goto fail; 913 } 914 if (invalid) 915 fatal_f("invalid brace pattern \"%s\"", cp); 916 if (expanded) { 917 /* 918 * Current entry expanded to new entries on the 919 * active list; discard the progenitor pattern. 920 */ 921 free(cp); 922 continue; 923 } 924 /* 925 * Pattern did not expand; append the finename component to 926 * the completed list 927 */ 928 if ((cp2 = strrchr(cp, '/')) != NULL) 929 *cp2++ = '\0'; 930 else 931 cp2 = cp; 932 if (append(xstrdup(cp2), &done, &ndone) != 0) { 933 free(cp); 934 goto fail; 935 } 936 free(cp); 937 } 938 /* success */ 939 *patternsp = done; 940 *npatternsp = ndone; 941 done = NULL; 942 ndone = 0; 943 ret = 0; 944 fail: 945 for (i = 0; i < nactive; i++) 946 free(active[i]); 947 free(active); 948 for (i = 0; i < ndone; i++) 949 free(done[i]); 950 free(done); 951 return ret; 952} 953 954static struct sftp_conn * 955do_sftp_connect(char *host, char *user, int port, char *sftp_direct, 956 int *reminp, int *remoutp, int *pidp) 957{ 958 if (sftp_direct == NULL) { 959 if (do_cmd(ssh_program, host, user, port, 1, "sftp", 960 reminp, remoutp, pidp) < 0) 961 return NULL; 962 963 } else { 964 freeargs(&args); 965 addargs(&args, "sftp-server"); 966 if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp", 967 reminp, remoutp, pidp) < 0) 968 return NULL; 969 } 970 return sftp_init(*reminp, *remoutp, 971 sftp_copy_buflen, sftp_nrequests, limit_kbps); 972} 973 974void 975toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 976{ 977 char *suser = NULL, *host = NULL, *src = NULL; 978 char *bp, *tuser, *thost, *targ; 979 int sport = -1, tport = -1; 980 struct sftp_conn *conn = NULL, *conn2 = NULL; 981 arglist alist; 982 int i, r, status; 983 struct stat sb; 984 u_int j; 985 986 memset(&alist, '\0', sizeof(alist)); 987 alist.list = NULL; 988 989 /* Parse target */ 990 r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ); 991 if (r == -1) { 992 fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]); 993 ++errs; 994 goto out; 995 } 996 if (r != 0) { 997 if (parse_user_host_path(argv[argc - 1], &tuser, &thost, 998 &targ) == -1) { 999 fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]); 1000 ++errs; 1001 goto out; 1002 } 1003 } 1004 1005 /* Parse source files */ 1006 for (i = 0; i < argc - 1; i++) { 1007 free(suser); 1008 free(host); 1009 free(src); 1010 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1011 if (r == -1) { 1012 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1013 ++errs; 1014 continue; 1015 } 1016 if (r != 0) { 1017 parse_user_host_path(argv[i], &suser, &host, &src); 1018 } 1019 if (suser != NULL && !okname(suser)) { 1020 ++errs; 1021 continue; 1022 } 1023 if (host && throughlocal) { /* extended remote to remote */ 1024 if (mode == MODE_SFTP) { 1025 if (remin == -1) { 1026 /* Connect to dest now */ 1027 conn = do_sftp_connect(thost, tuser, 1028 tport, sftp_direct, 1029 &remin, &remout, &do_cmd_pid); 1030 if (conn == NULL) { 1031 fatal("Unable to open " 1032 "destination connection"); 1033 } 1034 debug3_f("origin in %d out %d pid %ld", 1035 remin, remout, (long)do_cmd_pid); 1036 } 1037 /* 1038 * XXX remember suser/host/sport and only 1039 * reconnect if they change between arguments. 1040 * would save reconnections for cases like 1041 * scp -3 hosta:/foo hosta:/bar hostb: 1042 */ 1043 /* Connect to origin now */ 1044 conn2 = do_sftp_connect(host, suser, 1045 sport, sftp_direct, 1046 &remin2, &remout2, &do_cmd_pid2); 1047 if (conn2 == NULL) { 1048 fatal("Unable to open " 1049 "source connection"); 1050 } 1051 debug3_f("destination in %d out %d pid %ld", 1052 remin2, remout2, (long)do_cmd_pid2); 1053 throughlocal_sftp(conn2, conn, src, targ); 1054 (void) close(remin2); 1055 (void) close(remout2); 1056 remin2 = remout2 = -1; 1057 if (waitpid(do_cmd_pid2, &status, 0) == -1) 1058 ++errs; 1059 else if (!WIFEXITED(status) || 1060 WEXITSTATUS(status) != 0) 1061 ++errs; 1062 do_cmd_pid2 = -1; 1063 continue; 1064 } else { 1065 xasprintf(&bp, "%s -f %s%s", cmd, 1066 *src == '-' ? "-- " : "", src); 1067 if (do_cmd(ssh_program, host, suser, sport, 0, 1068 bp, &remin, &remout, &do_cmd_pid) < 0) 1069 exit(1); 1070 free(bp); 1071 xasprintf(&bp, "%s -t %s%s", cmd, 1072 *targ == '-' ? "-- " : "", targ); 1073 if (do_cmd2(thost, tuser, tport, bp, 1074 remin, remout) < 0) 1075 exit(1); 1076 free(bp); 1077 (void) close(remin); 1078 (void) close(remout); 1079 remin = remout = -1; 1080 } 1081 } else if (host) { /* standard remote to remote */ 1082 /* 1083 * Second remote user is passed to first remote side 1084 * via scp command-line. Ensure it contains no obvious 1085 * shell characters. 1086 */ 1087 if (tuser != NULL && !okname(tuser)) { 1088 ++errs; 1089 continue; 1090 } 1091 if (tport != -1 && tport != SSH_DEFAULT_PORT) { 1092 /* This would require the remote support URIs */ 1093 fatal("target port not supported with two " 1094 "remote hosts and the -R option"); 1095 } 1096 1097 freeargs(&alist); 1098 addargs(&alist, "%s", ssh_program); 1099 addargs(&alist, "-x"); 1100 addargs(&alist, "-oClearAllForwardings=yes"); 1101 addargs(&alist, "-n"); 1102 for (j = 0; j < remote_remote_args.num; j++) { 1103 addargs(&alist, "%s", 1104 remote_remote_args.list[j]); 1105 } 1106 1107 if (sport != -1) { 1108 addargs(&alist, "-p"); 1109 addargs(&alist, "%d", sport); 1110 } 1111 if (suser) { 1112 addargs(&alist, "-l"); 1113 addargs(&alist, "%s", suser); 1114 } 1115 addargs(&alist, "--"); 1116 addargs(&alist, "%s", host); 1117 addargs(&alist, "%s", cmd); 1118 addargs(&alist, "%s", src); 1119 addargs(&alist, "%s%s%s:%s", 1120 tuser ? tuser : "", tuser ? "@" : "", 1121 thost, targ); 1122 if (do_local_cmd(&alist) != 0) 1123 errs = 1; 1124 } else { /* local to remote */ 1125 if (mode == MODE_SFTP) { 1126 /* no need to glob: already done by shell */ 1127 if (stat(argv[i], &sb) != 0) { 1128 fatal("stat local \"%s\": %s", argv[i], 1129 strerror(errno)); 1130 } 1131 if (remin == -1) { 1132 /* Connect to remote now */ 1133 conn = do_sftp_connect(thost, tuser, 1134 tport, sftp_direct, 1135 &remin, &remout, &do_cmd_pid); 1136 if (conn == NULL) { 1137 fatal("Unable to open sftp " 1138 "connection"); 1139 } 1140 } 1141 1142 /* The protocol */ 1143 source_sftp(1, argv[i], targ, conn); 1144 continue; 1145 } 1146 /* SCP */ 1147 if (remin == -1) { 1148 xasprintf(&bp, "%s -t %s%s", cmd, 1149 *targ == '-' ? "-- " : "", targ); 1150 if (do_cmd(ssh_program, thost, tuser, tport, 0, 1151 bp, &remin, &remout, &do_cmd_pid) < 0) 1152 exit(1); 1153 if (response() < 0) 1154 exit(1); 1155 free(bp); 1156 } 1157 source(1, argv + i); 1158 } 1159 } 1160out: 1161 if (mode == MODE_SFTP) 1162 free(conn); 1163 free(tuser); 1164 free(thost); 1165 free(targ); 1166 free(suser); 1167 free(host); 1168 free(src); 1169} 1170 1171void 1172tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct) 1173{ 1174 char *bp, *host = NULL, *src = NULL, *suser = NULL; 1175 arglist alist; 1176 struct sftp_conn *conn = NULL; 1177 int i, r, sport = -1; 1178 1179 memset(&alist, '\0', sizeof(alist)); 1180 alist.list = NULL; 1181 1182 for (i = 0; i < argc - 1; i++) { 1183 free(suser); 1184 free(host); 1185 free(src); 1186 r = parse_scp_uri(argv[i], &suser, &host, &sport, &src); 1187 if (r == -1) { 1188 fmprintf(stderr, "%s: invalid uri\n", argv[i]); 1189 ++errs; 1190 continue; 1191 } 1192 if (r != 0) 1193 parse_user_host_path(argv[i], &suser, &host, &src); 1194 if (suser != NULL && !okname(suser)) { 1195 ++errs; 1196 continue; 1197 } 1198 if (!host) { /* Local to local. */ 1199 freeargs(&alist); 1200 addargs(&alist, "%s", _PATH_CP); 1201 if (iamrecursive) 1202 addargs(&alist, "-r"); 1203 if (pflag) 1204 addargs(&alist, "-p"); 1205 addargs(&alist, "--"); 1206 addargs(&alist, "%s", argv[i]); 1207 addargs(&alist, "%s", argv[argc-1]); 1208 if (do_local_cmd(&alist)) 1209 ++errs; 1210 continue; 1211 } 1212 /* Remote to local. */ 1213 if (mode == MODE_SFTP) { 1214 conn = do_sftp_connect(host, suser, sport, 1215 sftp_direct, &remin, &remout, &do_cmd_pid); 1216 if (conn == NULL) { 1217 error("sftp connection failed"); 1218 ++errs; 1219 continue; 1220 } 1221 1222 /* The protocol */ 1223 sink_sftp(1, argv[argc - 1], src, conn); 1224 1225 free(conn); 1226 (void) close(remin); 1227 (void) close(remout); 1228 remin = remout = -1; 1229 continue; 1230 } 1231 /* SCP */ 1232 xasprintf(&bp, "%s -f %s%s", 1233 cmd, *src == '-' ? "-- " : "", src); 1234 if (do_cmd(ssh_program, host, suser, sport, 0, bp, 1235 &remin, &remout, &do_cmd_pid) < 0) { 1236 free(bp); 1237 ++errs; 1238 continue; 1239 } 1240 free(bp); 1241 sink(1, argv + argc - 1, src); 1242 (void) close(remin); 1243 remin = remout = -1; 1244 } 1245 free(suser); 1246 free(host); 1247 free(src); 1248} 1249 1250/* Prepare remote path, handling ~ by assuming cwd is the homedir */ 1251static char * 1252prepare_remote_path(struct sftp_conn *conn, const char *path) 1253{ 1254 size_t nslash; 1255 1256 /* Handle ~ prefixed paths */ 1257 if (*path == '\0' || strcmp(path, "~") == 0) 1258 return xstrdup("."); 1259 if (*path != '~') 1260 return xstrdup(path); 1261 if (strncmp(path, "~/", 2) == 0) { 1262 if ((nslash = strspn(path + 2, "/")) == strlen(path + 2)) 1263 return xstrdup("."); 1264 return xstrdup(path + 2 + nslash); 1265 } 1266 if (sftp_can_expand_path(conn)) 1267 return sftp_expand_path(conn, path); 1268 /* No protocol extension */ 1269 error("server expand-path extension is required " 1270 "for ~user paths in SFTP mode"); 1271 return NULL; 1272} 1273 1274void 1275source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn) 1276{ 1277 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1278 int src_is_dir, target_is_dir; 1279 Attrib a; 1280 struct stat st; 1281 1282 memset(&a, '\0', sizeof(a)); 1283 if (stat(src, &st) != 0) 1284 fatal("stat local \"%s\": %s", src, strerror(errno)); 1285 src_is_dir = S_ISDIR(st.st_mode); 1286 if ((filename = basename(src)) == NULL) 1287 fatal("basename \"%s\": %s", src, strerror(errno)); 1288 1289 /* 1290 * No need to glob here - the local shell already took care of 1291 * the expansions 1292 */ 1293 if ((target = prepare_remote_path(conn, targ)) == NULL) 1294 cleanup_exit(255); 1295 target_is_dir = sftp_remote_is_dir(conn, target); 1296 if (targetshouldbedirectory && !target_is_dir) { 1297 debug("target directory \"%s\" does not exist", target); 1298 a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS; 1299 a.perm = st.st_mode | 0700; /* ensure writable */ 1300 if (sftp_mkdir(conn, target, &a, 1) != 0) 1301 cleanup_exit(255); /* error already logged */ 1302 target_is_dir = 1; 1303 } 1304 if (target_is_dir) 1305 abs_dst = sftp_path_append(target, filename); 1306 else { 1307 abs_dst = target; 1308 target = NULL; 1309 } 1310 debug3_f("copying local %s to remote %s", src, abs_dst); 1311 1312 if (src_is_dir && iamrecursive) { 1313 if (sftp_upload_dir(conn, src, abs_dst, pflag, 1314 SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) { 1315 error("failed to upload directory %s to %s", src, targ); 1316 errs = 1; 1317 } 1318 } else if (sftp_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) { 1319 error("failed to upload file %s to %s", src, targ); 1320 errs = 1; 1321 } 1322 1323 free(abs_dst); 1324 free(target); 1325} 1326 1327void 1328source(int argc, char **argv) 1329{ 1330 struct stat stb; 1331 static BUF buffer; 1332 BUF *bp; 1333 off_t i, statbytes; 1334 size_t amt, nr; 1335 int fd = -1, haderr, indx; 1336 char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX]; 1337 int len; 1338 1339 for (indx = 0; indx < argc; ++indx) { 1340 name = argv[indx]; 1341 statbytes = 0; 1342 len = strlen(name); 1343 while (len > 1 && name[len-1] == '/') 1344 name[--len] = '\0'; 1345 if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1) 1346 goto syserr; 1347 if (strchr(name, '\n') != NULL) { 1348 strnvis(encname, name, sizeof(encname), VIS_NL); 1349 name = encname; 1350 } 1351 if (fstat(fd, &stb) == -1) { 1352syserr: run_err("%s: %s", name, strerror(errno)); 1353 goto next; 1354 } 1355 if (stb.st_size < 0) { 1356 run_err("%s: %s", name, "Negative file size"); 1357 goto next; 1358 } 1359 unset_nonblock(fd); 1360 switch (stb.st_mode & S_IFMT) { 1361 case S_IFREG: 1362 break; 1363 case S_IFDIR: 1364 if (iamrecursive) { 1365 rsource(name, &stb); 1366 goto next; 1367 } 1368 /* FALLTHROUGH */ 1369 default: 1370 run_err("%s: not a regular file", name); 1371 goto next; 1372 } 1373 if ((last = strrchr(name, '/')) == NULL) 1374 last = name; 1375 else 1376 ++last; 1377 curfile = last; 1378 if (pflag) { 1379 if (do_times(remout, verbose_mode, &stb) < 0) 1380 goto next; 1381 } 1382#define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) 1383 snprintf(buf, sizeof buf, "C%04o %lld %s\n", 1384 (u_int) (stb.st_mode & FILEMODEMASK), 1385 (long long)stb.st_size, last); 1386 if (verbose_mode) 1387 fmprintf(stderr, "Sending file modes: %s", buf); 1388 (void) atomicio(vwrite, remout, buf, strlen(buf)); 1389 if (response() < 0) 1390 goto next; 1391 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { 1392next: if (fd != -1) { 1393 (void) close(fd); 1394 fd = -1; 1395 } 1396 continue; 1397 } 1398 if (showprogress) 1399 start_progress_meter(curfile, stb.st_size, &statbytes); 1400 set_nonblock(remout); 1401 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 1402 amt = bp->cnt; 1403 if (i + (off_t)amt > stb.st_size) 1404 amt = stb.st_size - i; 1405 if (!haderr) { 1406 if ((nr = atomicio(read, fd, 1407 bp->buf, amt)) != amt) { 1408 haderr = errno; 1409 memset(bp->buf + nr, 0, amt - nr); 1410 } 1411 } 1412 /* Keep writing after error to retain sync */ 1413 if (haderr) { 1414 (void)atomicio(vwrite, remout, bp->buf, amt); 1415 memset(bp->buf, 0, amt); 1416 continue; 1417 } 1418 if (atomicio6(vwrite, remout, bp->buf, amt, scpio, 1419 &statbytes) != amt) 1420 haderr = errno; 1421 } 1422 unset_nonblock(remout); 1423 1424 if (fd != -1) { 1425 if (close(fd) == -1 && !haderr) 1426 haderr = errno; 1427 fd = -1; 1428 } 1429 if (!haderr) 1430 (void) atomicio(vwrite, remout, "", 1); 1431 else 1432 run_err("%s: %s", name, strerror(haderr)); 1433 (void) response(); 1434 if (showprogress) 1435 stop_progress_meter(); 1436 } 1437} 1438 1439void 1440rsource(char *name, struct stat *statp) 1441{ 1442 DIR *dirp; 1443 struct dirent *dp; 1444 char *last, *vect[1], path[PATH_MAX]; 1445 1446 if (!(dirp = opendir(name))) { 1447 run_err("%s: %s", name, strerror(errno)); 1448 return; 1449 } 1450 last = strrchr(name, '/'); 1451 if (last == NULL) 1452 last = name; 1453 else 1454 last++; 1455 if (pflag) { 1456 if (do_times(remout, verbose_mode, statp) < 0) { 1457 closedir(dirp); 1458 return; 1459 } 1460 } 1461 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", 1462 (u_int) (statp->st_mode & FILEMODEMASK), 0, last); 1463 if (verbose_mode) 1464 fmprintf(stderr, "Entering directory: %s", path); 1465 (void) atomicio(vwrite, remout, path, strlen(path)); 1466 if (response() < 0) { 1467 closedir(dirp); 1468 return; 1469 } 1470 while ((dp = readdir(dirp)) != NULL) { 1471 if (dp->d_ino == 0) 1472 continue; 1473 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) 1474 continue; 1475 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { 1476 run_err("%s/%s: name too long", name, dp->d_name); 1477 continue; 1478 } 1479 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); 1480 vect[0] = path; 1481 source(1, vect); 1482 } 1483 (void) closedir(dirp); 1484 (void) atomicio(vwrite, remout, "E\n", 2); 1485 (void) response(); 1486} 1487 1488void 1489sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn) 1490{ 1491 char *abs_src = NULL; 1492 char *abs_dst = NULL; 1493 glob_t g; 1494 char *filename, *tmp = NULL; 1495 int i, r, err = 0, dst_is_dir; 1496 struct stat st; 1497 1498 memset(&g, 0, sizeof(g)); 1499 1500 /* 1501 * Here, we need remote glob as SFTP can not depend on remote shell 1502 * expansions 1503 */ 1504 if ((abs_src = prepare_remote_path(conn, src)) == NULL) { 1505 err = -1; 1506 goto out; 1507 } 1508 1509 debug3_f("copying remote %s to local %s", abs_src, dst); 1510 if ((r = sftp_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK, 1511 NULL, &g)) != 0) { 1512 if (r == GLOB_NOSPACE) 1513 error("%s: too many glob matches", src); 1514 else 1515 error("%s: %s", src, strerror(ENOENT)); 1516 err = -1; 1517 goto out; 1518 } 1519 1520 /* Did we actually get any matches back from the glob? */ 1521 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1522 /* 1523 * If nothing matched but a path returned, then it's probably 1524 * a GLOB_NOCHECK result. Check whether the unglobbed path 1525 * exists so we can give a nice error message early. 1526 */ 1527 if (sftp_stat(conn, g.gl_pathv[0], 1, NULL) != 0) { 1528 error("%s: %s", src, strerror(ENOENT)); 1529 err = -1; 1530 goto out; 1531 } 1532 } 1533 1534 if ((r = stat(dst, &st)) != 0) 1535 debug2_f("stat local \"%s\": %s", dst, strerror(errno)); 1536 dst_is_dir = r == 0 && S_ISDIR(st.st_mode); 1537 1538 if (g.gl_matchc > 1 && !dst_is_dir) { 1539 if (r == 0) { 1540 error("Multiple files match pattern, but destination " 1541 "\"%s\" is not a directory", dst); 1542 err = -1; 1543 goto out; 1544 } 1545 debug2_f("creating destination \"%s\"", dst); 1546 if (mkdir(dst, 0777) != 0) { 1547 error("local mkdir \"%s\": %s", dst, strerror(errno)); 1548 err = -1; 1549 goto out; 1550 } 1551 dst_is_dir = 1; 1552 } 1553 1554 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1555 tmp = xstrdup(g.gl_pathv[i]); 1556 if ((filename = basename(tmp)) == NULL) { 1557 error("basename %s: %s", tmp, strerror(errno)); 1558 err = -1; 1559 goto out; 1560 } 1561 1562 if (dst_is_dir) 1563 abs_dst = sftp_path_append(dst, filename); 1564 else 1565 abs_dst = xstrdup(dst); 1566 1567 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1568 if (sftp_globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1569 if (sftp_download_dir(conn, g.gl_pathv[i], abs_dst, 1570 NULL, pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1) 1571 err = -1; 1572 } else { 1573 if (sftp_download(conn, g.gl_pathv[i], abs_dst, NULL, 1574 pflag, 0, 0, 1) == -1) 1575 err = -1; 1576 } 1577 free(abs_dst); 1578 abs_dst = NULL; 1579 free(tmp); 1580 tmp = NULL; 1581 } 1582 1583out: 1584 free(abs_src); 1585 free(tmp); 1586 globfree(&g); 1587 if (err == -1) 1588 errs = 1; 1589} 1590 1591 1592#define TYPE_OVERFLOW(type, val) \ 1593 ((sizeof(type) == 4 && (val) > INT32_MAX) || \ 1594 (sizeof(type) == 8 && (val) > INT64_MAX) || \ 1595 (sizeof(type) != 4 && sizeof(type) != 8)) 1596 1597void 1598sink(int argc, char **argv, const char *src) 1599{ 1600 static BUF buffer; 1601 struct stat stb; 1602 BUF *bp; 1603 off_t i; 1604 size_t j, count; 1605 int amt, exists, first, ofd; 1606 mode_t mode, omode, mask; 1607 off_t size, statbytes; 1608 unsigned long long ull; 1609 int setimes, targisdir, wrerr; 1610 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048]; 1611 char **patterns = NULL; 1612 size_t n, npatterns = 0; 1613 struct timeval tv[2]; 1614 1615#define atime tv[0] 1616#define mtime tv[1] 1617#define SCREWUP(str) { why = str; goto screwup; } 1618 1619 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0)) 1620 SCREWUP("Unexpected off_t/time_t size"); 1621 1622 setimes = targisdir = 0; 1623 mask = umask(0); 1624 if (!pflag) 1625 (void) umask(mask); 1626 if (argc != 1) { 1627 run_err("ambiguous target"); 1628 exit(1); 1629 } 1630 targ = *argv; 1631 if (targetshouldbedirectory) 1632 verifydir(targ); 1633 1634 (void) atomicio(vwrite, remout, "", 1); 1635 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 1636 targisdir = 1; 1637 if (src != NULL && !iamrecursive && !Tflag) { 1638 /* 1639 * Prepare to try to restrict incoming filenames to match 1640 * the requested destination file glob. 1641 */ 1642 if (brace_expand(src, &patterns, &npatterns) != 0) 1643 fatal_f("could not expand pattern"); 1644 } 1645 for (first = 1;; first = 0) { 1646 cp = buf; 1647 if (atomicio(read, remin, cp, 1) != 1) 1648 goto done; 1649 if (*cp++ == '\n') 1650 SCREWUP("unexpected <newline>"); 1651 do { 1652 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 1653 SCREWUP("lost connection"); 1654 *cp++ = ch; 1655 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); 1656 *cp = 0; 1657 if (verbose_mode) 1658 fmprintf(stderr, "Sink: %s", buf); 1659 1660 if (buf[0] == '\01' || buf[0] == '\02') { 1661 if (iamremote == 0) { 1662 (void) snmprintf(visbuf, sizeof(visbuf), 1663 NULL, "%s", buf + 1); 1664 (void) atomicio(vwrite, STDERR_FILENO, 1665 visbuf, strlen(visbuf)); 1666 } 1667 if (buf[0] == '\02') 1668 exit(1); 1669 ++errs; 1670 continue; 1671 } 1672 if (buf[0] == 'E') { 1673 (void) atomicio(vwrite, remout, "", 1); 1674 goto done; 1675 } 1676 if (ch == '\n') 1677 *--cp = 0; 1678 1679 cp = buf; 1680 if (*cp == 'T') { 1681 setimes++; 1682 cp++; 1683 if (!isdigit((unsigned char)*cp)) 1684 SCREWUP("mtime.sec not present"); 1685 ull = strtoull(cp, &cp, 10); 1686 if (!cp || *cp++ != ' ') 1687 SCREWUP("mtime.sec not delimited"); 1688 if (TYPE_OVERFLOW(time_t, ull)) 1689 setimes = 0; /* out of range */ 1690 mtime.tv_sec = ull; 1691 mtime.tv_usec = strtol(cp, &cp, 10); 1692 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 || 1693 mtime.tv_usec > 999999) 1694 SCREWUP("mtime.usec not delimited"); 1695 if (!isdigit((unsigned char)*cp)) 1696 SCREWUP("atime.sec not present"); 1697 ull = strtoull(cp, &cp, 10); 1698 if (!cp || *cp++ != ' ') 1699 SCREWUP("atime.sec not delimited"); 1700 if (TYPE_OVERFLOW(time_t, ull)) 1701 setimes = 0; /* out of range */ 1702 atime.tv_sec = ull; 1703 atime.tv_usec = strtol(cp, &cp, 10); 1704 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 || 1705 atime.tv_usec > 999999) 1706 SCREWUP("atime.usec not delimited"); 1707 (void) atomicio(vwrite, remout, "", 1); 1708 continue; 1709 } 1710 if (*cp != 'C' && *cp != 'D') { 1711 /* 1712 * Check for the case "rcp remote:foo\* local:bar". 1713 * In this case, the line "No match." can be returned 1714 * by the shell before the rcp command on the remote is 1715 * executed so the ^Aerror_message convention isn't 1716 * followed. 1717 */ 1718 if (first) { 1719 run_err("%s", cp); 1720 exit(1); 1721 } 1722 SCREWUP("expected control record"); 1723 } 1724 mode = 0; 1725 for (++cp; cp < buf + 5; cp++) { 1726 if (*cp < '0' || *cp > '7') 1727 SCREWUP("bad mode"); 1728 mode = (mode << 3) | (*cp - '0'); 1729 } 1730 if (!pflag) 1731 mode &= ~mask; 1732 if (*cp++ != ' ') 1733 SCREWUP("mode not delimited"); 1734 1735 if (!isdigit((unsigned char)*cp)) 1736 SCREWUP("size not present"); 1737 ull = strtoull(cp, &cp, 10); 1738 if (!cp || *cp++ != ' ') 1739 SCREWUP("size not delimited"); 1740 if (TYPE_OVERFLOW(off_t, ull)) 1741 SCREWUP("size out of range"); 1742 size = (off_t)ull; 1743 1744 if (*cp == '\0' || strchr(cp, '/') != NULL || 1745 strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { 1746 run_err("error: unexpected filename: %s", cp); 1747 exit(1); 1748 } 1749 if (npatterns > 0) { 1750 for (n = 0; n < npatterns; n++) { 1751 if (strcmp(patterns[n], cp) == 0 || 1752 fnmatch(patterns[n], cp, 0) == 0) 1753 break; 1754 } 1755 if (n >= npatterns) { 1756 debug2_f("incoming filename \"%s\" does not " 1757 "match any of %zu expected patterns", cp, 1758 npatterns); 1759 for (n = 0; n < npatterns; n++) { 1760 debug3_f("expected pattern %zu: \"%s\"", 1761 n, patterns[n]); 1762 } 1763 SCREWUP("filename does not match request"); 1764 } 1765 } 1766 if (targisdir) { 1767 static char *namebuf; 1768 static size_t cursize; 1769 size_t need; 1770 1771 need = strlen(targ) + strlen(cp) + 250; 1772 if (need > cursize) { 1773 free(namebuf); 1774 namebuf = xmalloc(need); 1775 cursize = need; 1776 } 1777 (void) snprintf(namebuf, need, "%s%s%s", targ, 1778 strcmp(targ, "/") ? "/" : "", cp); 1779 np = namebuf; 1780 } else 1781 np = targ; 1782 curfile = cp; 1783 exists = stat(np, &stb) == 0; 1784 if (buf[0] == 'D') { 1785 int mod_flag = pflag; 1786 if (!iamrecursive) 1787 SCREWUP("received directory without -r"); 1788 if (exists) { 1789 if (!S_ISDIR(stb.st_mode)) { 1790 errno = ENOTDIR; 1791 goto bad; 1792 } 1793 if (pflag) 1794 (void) chmod(np, mode); 1795 } else { 1796 /* Handle copying from a read-only directory */ 1797 mod_flag = 1; 1798 if (mkdir(np, mode | S_IRWXU) == -1) 1799 goto bad; 1800 } 1801 vect[0] = xstrdup(np); 1802 sink(1, vect, src); 1803 if (setimes) { 1804 setimes = 0; 1805 (void) utimes(vect[0], tv); 1806 } 1807 if (mod_flag) 1808 (void) chmod(vect[0], mode); 1809 free(vect[0]); 1810 continue; 1811 } 1812 omode = mode; 1813 mode |= S_IWUSR; 1814 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) { 1815bad: run_err("%s: %s", np, strerror(errno)); 1816 continue; 1817 } 1818 (void) atomicio(vwrite, remout, "", 1); 1819 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { 1820 (void) close(ofd); 1821 continue; 1822 } 1823 cp = bp->buf; 1824 wrerr = 0; 1825 1826 /* 1827 * NB. do not use run_err() unless immediately followed by 1828 * exit() below as it may send a spurious reply that might 1829 * desyncronise us from the peer. Use note_err() instead. 1830 */ 1831 statbytes = 0; 1832 if (showprogress) 1833 start_progress_meter(curfile, size, &statbytes); 1834 set_nonblock(remin); 1835 for (count = i = 0; i < size; i += bp->cnt) { 1836 amt = bp->cnt; 1837 if (i + amt > size) 1838 amt = size - i; 1839 count += amt; 1840 do { 1841 j = atomicio6(read, remin, cp, amt, 1842 scpio, &statbytes); 1843 if (j == 0) { 1844 run_err("%s", j != EPIPE ? 1845 strerror(errno) : 1846 "dropped connection"); 1847 exit(1); 1848 } 1849 amt -= j; 1850 cp += j; 1851 } while (amt > 0); 1852 1853 if (count == bp->cnt) { 1854 /* Keep reading so we stay sync'd up. */ 1855 if (!wrerr) { 1856 if (atomicio(vwrite, ofd, bp->buf, 1857 count) != count) { 1858 note_err("%s: %s", np, 1859 strerror(errno)); 1860 wrerr = 1; 1861 } 1862 } 1863 count = 0; 1864 cp = bp->buf; 1865 } 1866 } 1867 unset_nonblock(remin); 1868 if (count != 0 && !wrerr && 1869 atomicio(vwrite, ofd, bp->buf, count) != count) { 1870 note_err("%s: %s", np, strerror(errno)); 1871 wrerr = 1; 1872 } 1873 if (!wrerr && (!exists || S_ISREG(stb.st_mode)) && 1874 ftruncate(ofd, size) != 0) 1875 note_err("%s: truncate: %s", np, strerror(errno)); 1876 if (pflag) { 1877 if (exists || omode != mode) 1878 if (fchmod(ofd, omode)) { 1879 note_err("%s: set mode: %s", 1880 np, strerror(errno)); 1881 } 1882 } else { 1883 if (!exists && omode != mode) 1884 if (fchmod(ofd, omode & ~mask)) { 1885 note_err("%s: set mode: %s", 1886 np, strerror(errno)); 1887 } 1888 } 1889 if (close(ofd) == -1) 1890 note_err("%s: close: %s", np, strerror(errno)); 1891 (void) response(); 1892 if (showprogress) 1893 stop_progress_meter(); 1894 if (setimes && !wrerr) { 1895 setimes = 0; 1896 if (utimes(np, tv) == -1) { 1897 note_err("%s: set times: %s", 1898 np, strerror(errno)); 1899 } 1900 } 1901 /* If no error was noted then signal success for this file */ 1902 if (note_err(NULL) == 0) 1903 (void) atomicio(vwrite, remout, "", 1); 1904 } 1905done: 1906 for (n = 0; n < npatterns; n++) 1907 free(patterns[n]); 1908 free(patterns); 1909 return; 1910screwup: 1911 for (n = 0; n < npatterns; n++) 1912 free(patterns[n]); 1913 free(patterns); 1914 run_err("protocol error: %s", why); 1915 exit(1); 1916} 1917 1918void 1919throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to, 1920 char *src, char *targ) 1921{ 1922 char *target = NULL, *filename = NULL, *abs_dst = NULL; 1923 char *abs_src = NULL, *tmp = NULL; 1924 glob_t g; 1925 int i, r, targetisdir, err = 0; 1926 1927 if ((filename = basename(src)) == NULL) 1928 fatal("basename %s: %s", src, strerror(errno)); 1929 1930 if ((abs_src = prepare_remote_path(from, src)) == NULL || 1931 (target = prepare_remote_path(to, targ)) == NULL) 1932 cleanup_exit(255); 1933 memset(&g, 0, sizeof(g)); 1934 1935 targetisdir = sftp_remote_is_dir(to, target); 1936 if (!targetisdir && targetshouldbedirectory) { 1937 error("%s: destination is not a directory", targ); 1938 err = -1; 1939 goto out; 1940 } 1941 1942 debug3_f("copying remote %s to remote %s", abs_src, target); 1943 if ((r = sftp_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK, 1944 NULL, &g)) != 0) { 1945 if (r == GLOB_NOSPACE) 1946 error("%s: too many glob matches", src); 1947 else 1948 error("%s: %s", src, strerror(ENOENT)); 1949 err = -1; 1950 goto out; 1951 } 1952 1953 /* Did we actually get any matches back from the glob? */ 1954 if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) { 1955 /* 1956 * If nothing matched but a path returned, then it's probably 1957 * a GLOB_NOCHECK result. Check whether the unglobbed path 1958 * exists so we can give a nice error message early. 1959 */ 1960 if (sftp_stat(from, g.gl_pathv[0], 1, NULL) != 0) { 1961 error("%s: %s", src, strerror(ENOENT)); 1962 err = -1; 1963 goto out; 1964 } 1965 } 1966 1967 for (i = 0; g.gl_pathv[i] && !interrupted; i++) { 1968 tmp = xstrdup(g.gl_pathv[i]); 1969 if ((filename = basename(tmp)) == NULL) { 1970 error("basename %s: %s", tmp, strerror(errno)); 1971 err = -1; 1972 goto out; 1973 } 1974 1975 if (targetisdir) 1976 abs_dst = sftp_path_append(target, filename); 1977 else 1978 abs_dst = xstrdup(target); 1979 1980 debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); 1981 if (sftp_globpath_is_dir(g.gl_pathv[i]) && iamrecursive) { 1982 if (sftp_crossload_dir(from, to, g.gl_pathv[i], abs_dst, 1983 NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1) 1984 err = -1; 1985 } else { 1986 if (sftp_crossload(from, to, g.gl_pathv[i], abs_dst, 1987 NULL, pflag) == -1) 1988 err = -1; 1989 } 1990 free(abs_dst); 1991 abs_dst = NULL; 1992 free(tmp); 1993 tmp = NULL; 1994 } 1995 1996out: 1997 free(abs_src); 1998 free(abs_dst); 1999 free(target); 2000 free(tmp); 2001 globfree(&g); 2002 if (err == -1) 2003 errs = 1; 2004} 2005 2006int 2007response(void) 2008{ 2009 char ch, *cp, resp, rbuf[2048], visbuf[2048]; 2010 2011 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) 2012 lostconn(0); 2013 2014 cp = rbuf; 2015 switch (resp) { 2016 case 0: /* ok */ 2017 return (0); 2018 default: 2019 *cp++ = resp; 2020 /* FALLTHROUGH */ 2021 case 1: /* error, followed by error msg */ 2022 case 2: /* fatal error, "" */ 2023 do { 2024 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) 2025 lostconn(0); 2026 *cp++ = ch; 2027 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); 2028 2029 if (!iamremote) { 2030 cp[-1] = '\0'; 2031 (void) snmprintf(visbuf, sizeof(visbuf), 2032 NULL, "%s\n", rbuf); 2033 (void) atomicio(vwrite, STDERR_FILENO, 2034 visbuf, strlen(visbuf)); 2035 } 2036 ++errs; 2037 if (resp == 1) 2038 return (-1); 2039 exit(1); 2040 } 2041 /* NOTREACHED */ 2042} 2043 2044void 2045usage(void) 2046{ 2047 (void) fprintf(stderr, 2048 "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n" 2049 " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n" 2050 " [-P port] [-S program] [-X sftp_option] source ... target\n"); 2051 exit(1); 2052} 2053 2054void 2055run_err(const char *fmt,...) 2056{ 2057 static FILE *fp; 2058 va_list ap; 2059 2060 ++errs; 2061 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { 2062 (void) fprintf(fp, "%c", 0x01); 2063 (void) fprintf(fp, "scp: "); 2064 va_start(ap, fmt); 2065 (void) vfprintf(fp, fmt, ap); 2066 va_end(ap); 2067 (void) fprintf(fp, "\n"); 2068 (void) fflush(fp); 2069 } 2070 2071 if (!iamremote) { 2072 va_start(ap, fmt); 2073 vfmprintf(stderr, fmt, ap); 2074 va_end(ap); 2075 fprintf(stderr, "\n"); 2076 } 2077} 2078 2079/* 2080 * Notes a sink error for sending at the end of a file transfer. Returns 0 if 2081 * no error has been noted or -1 otherwise. Use note_err(NULL) to flush 2082 * any active error at the end of the transfer. 2083 */ 2084int 2085note_err(const char *fmt, ...) 2086{ 2087 static char *emsg; 2088 va_list ap; 2089 2090 /* Replay any previously-noted error */ 2091 if (fmt == NULL) { 2092 if (emsg == NULL) 2093 return 0; 2094 run_err("%s", emsg); 2095 free(emsg); 2096 emsg = NULL; 2097 return -1; 2098 } 2099 2100 errs++; 2101 /* Prefer first-noted error */ 2102 if (emsg != NULL) 2103 return -1; 2104 2105 va_start(ap, fmt); 2106 vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap); 2107 va_end(ap); 2108 return -1; 2109} 2110 2111void 2112verifydir(char *cp) 2113{ 2114 struct stat stb; 2115 2116 if (!stat(cp, &stb)) { 2117 if (S_ISDIR(stb.st_mode)) 2118 return; 2119 errno = ENOTDIR; 2120 } 2121 run_err("%s: %s", cp, strerror(errno)); 2122 killchild(0); 2123} 2124 2125int 2126okname(char *cp0) 2127{ 2128 int c; 2129 char *cp; 2130 2131 cp = cp0; 2132 do { 2133 c = (int)*cp; 2134 if (c & 0200) 2135 goto bad; 2136 if (!isalpha(c) && !isdigit((unsigned char)c)) { 2137 switch (c) { 2138 case '\'': 2139 case '"': 2140 case '`': 2141 case ' ': 2142 case '#': 2143 goto bad; 2144 default: 2145 break; 2146 } 2147 } 2148 } while (*++cp); 2149 return (1); 2150 2151bad: fmprintf(stderr, "%s: invalid user name\n", cp0); 2152 return (0); 2153} 2154 2155BUF * 2156allocbuf(BUF *bp, int fd, int blksize) 2157{ 2158 size_t size; 2159 struct stat stb; 2160 2161 if (fstat(fd, &stb) == -1) { 2162 run_err("fstat: %s", strerror(errno)); 2163 return (0); 2164 } 2165 size = ROUNDUP(stb.st_blksize, blksize); 2166 if (size == 0) 2167 size = blksize; 2168 if (bp->cnt >= size) 2169 return (bp); 2170 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1); 2171 bp->cnt = size; 2172 return (bp); 2173} 2174 2175void 2176lostconn(int signo) 2177{ 2178 if (!iamremote) 2179 (void)write(STDERR_FILENO, "lost connection\n", 16); 2180 if (signo) 2181 _exit(1); 2182 else 2183 exit(1); 2184} 2185 2186void 2187cleanup_exit(int i) 2188{ 2189 if (remin > 0) 2190 close(remin); 2191 if (remout > 0) 2192 close(remout); 2193 if (remin2 > 0) 2194 close(remin2); 2195 if (remout2 > 0) 2196 close(remout2); 2197 if (do_cmd_pid > 0) 2198 (void)waitpid(do_cmd_pid, NULL, 0); 2199 if (do_cmd_pid2 > 0) 2200 (void)waitpid(do_cmd_pid2, NULL, 0); 2201 exit(i); 2202} 2203