1 /* $OpenBSD: scp.c,v 1.192 2017/05/31 09:15:42 deraadt Exp $ */
3 * scp - secure remote copy. This is basically patched BSD rcp which
4 * uses ssh to do the data transfer (instead of using rcmd).
6 * NOTE: This version should NOT be suid root. (This uses ssh to
7 * do the transfer and ssh has the necessary privileges.)
9 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
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".
18 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19 * Copyright (c) 1999 Aaron Campbell. All rights reserved.
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
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.
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.
45 * Copyright (c) 1983, 1990, 1992, 1993, 1995
46 * The Regents of the University of California. All rights reserved.
48 * Redistribution and use in source and binary forms, with or without
49 * modification, are permitted provided that the following conditions
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.
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
76 #include <sys/types.h>
77 #ifdef HAVE_SYS_STAT_H
78 # include <sys/stat.h>
83 # ifdef HAVE_SYS_POLL_H
84 # include <sys/poll.h>
87 #ifdef HAVE_SYS_TIME_H
88 # include <sys/time.h>
110 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
115 #include "atomicio.h"
116 #include "pathnames.h"
119 #include "progressmeter.h"
122 extern char *__progname;
124 #define COPY_BUFLEN 16384
126 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
127 int do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout);
129 /* Struct for addargs */
131 arglist remote_remote_args;
133 /* Bandwidth limit */
134 long long limit_kbps = 0;
135 struct bwlimit bwlimit;
137 /* Name of current file being transferred. */
140 /* This is set to non-zero to enable verbose mode. */
141 int verbose_mode = 0;
143 /* This is set to zero if the progressmeter is not desired. */
144 int showprogress = 1;
147 * This is set to non-zero if remote-remote copy should be piped
148 * through this process.
150 int throughlocal = 0;
152 /* This is the program to execute for the secured connection. ("ssh" or -S) */
153 char *ssh_program = _PATH_SSH_PROGRAM;
155 /* This is used to store the pid of ssh_program */
156 pid_t do_cmd_pid = -1;
161 if (do_cmd_pid > 1) {
162 kill(do_cmd_pid, signo ? signo : SIGTERM);
163 waitpid(do_cmd_pid, NULL, 0);
176 if (do_cmd_pid > 1) {
177 kill(do_cmd_pid, signo);
178 while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
181 kill(getpid(), SIGSTOP);
186 do_local_cmd(arglist *a)
193 fatal("do_local_cmd: no arguments");
196 fprintf(stderr, "Executing:");
197 for (i = 0; i < a->num; i++)
198 fmprintf(stderr, " %s", a->list[i]);
199 fprintf(stderr, "\n");
201 if ((pid = fork()) == -1)
202 fatal("do_local_cmd: fork: %s", strerror(errno));
205 execvp(a->list[0], a->list);
211 signal(SIGTERM, killchild);
212 signal(SIGINT, killchild);
213 signal(SIGHUP, killchild);
215 while (waitpid(pid, &status, 0) == -1)
217 fatal("do_local_cmd: waitpid: %s", strerror(errno));
221 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
228 * This function executes the given command as the specified user on the
229 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
230 * assigns the input and output file descriptors on success.
234 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
236 int pin[2], pout[2], reserved[2];
240 "Executing: program %s host %s, user %s, command %s\n",
242 remuser ? remuser : "(unspecified)", cmd);
245 * Reserve two descriptors so that the real pipes won't get
246 * descriptors 0 and 1 because that will screw up dup2 below.
248 if (pipe(reserved) < 0)
249 fatal("pipe: %s", strerror(errno));
251 /* Create a socket pair for communicating with ssh. */
253 fatal("pipe: %s", strerror(errno));
255 fatal("pipe: %s", strerror(errno));
257 /* Free the reserved descriptors. */
261 signal(SIGTSTP, suspchild);
262 signal(SIGTTIN, suspchild);
263 signal(SIGTTOU, suspchild);
265 /* Fork a child to execute the command on the remote host using ssh. */
267 if (do_cmd_pid == 0) {
276 replacearg(&args, 0, "%s", ssh_program);
277 if (remuser != NULL) {
278 addargs(&args, "-l");
279 addargs(&args, "%s", remuser);
281 addargs(&args, "--");
282 addargs(&args, "%s", host);
283 addargs(&args, "%s", cmd);
285 execvp(ssh_program, args.list);
288 } else if (do_cmd_pid == -1) {
289 fatal("fork: %s", strerror(errno));
291 /* Parent. Close the other side, and return the local side. */
296 signal(SIGTERM, killchild);
297 signal(SIGINT, killchild);
298 signal(SIGHUP, killchild);
303 * This functions executes a command simlar to do_cmd(), but expects the
304 * input and output descriptors to be setup by a previous call to do_cmd().
305 * This way the input and output of two commands can be connected.
308 do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout)
315 "Executing: 2nd program %s host %s, user %s, command %s\n",
317 remuser ? remuser : "(unspecified)", cmd);
319 /* Fork a child to execute the command on the remote host using ssh. */
325 replacearg(&args, 0, "%s", ssh_program);
326 if (remuser != NULL) {
327 addargs(&args, "-l");
328 addargs(&args, "%s", remuser);
330 addargs(&args, "--");
331 addargs(&args, "%s", host);
332 addargs(&args, "%s", cmd);
334 execvp(ssh_program, args.list);
337 } else if (pid == -1) {
338 fatal("fork: %s", strerror(errno));
340 while (waitpid(pid, &status, 0) == -1)
342 fatal("do_cmd2: waitpid: %s", strerror(errno));
351 BUF *allocbuf(BUF *, int, int);
354 void run_err(const char *,...);
355 void verifydir(char *);
359 int errs, remin, remout;
360 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
363 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
366 void rsource(char *, struct stat *);
367 void sink(int, char *[]);
368 void source(int, char *[]);
369 void tolocal(int, char *[]);
370 void toremote(char *, int, char *[]);
374 main(int argc, char **argv)
376 int ch, fflag, tflag, status, n;
377 char *targ, **newargv;
382 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
387 /* Copy argv, because we modify it */
388 newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
389 for (n = 0; n < argc; n++)
390 newargv[n] = xstrdup(argv[n]);
393 __progname = ssh_get_progname(argv[0]);
395 memset(&args, '\0', sizeof(args));
396 memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
397 args.list = remote_remote_args.list = NULL;
398 addargs(&args, "%s", ssh_program);
399 addargs(&args, "-x");
400 addargs(&args, "-oForwardAgent=no");
401 addargs(&args, "-oPermitLocalCommand=no");
402 addargs(&args, "-oClearAllForwardings=yes");
405 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
407 /* User-visible flags. */
409 fatal("SSH protocol v.1 is no longer supported");
417 addargs(&args, "-%c", ch);
418 addargs(&remote_remote_args, "-%c", ch);
427 addargs(&remote_remote_args, "-%c", ch);
428 addargs(&remote_remote_args, "%s", optarg);
429 addargs(&args, "-%c", ch);
430 addargs(&args, "%s", optarg);
433 addargs(&remote_remote_args, "-p");
434 addargs(&remote_remote_args, "%s", optarg);
435 addargs(&args, "-p");
436 addargs(&args, "%s", optarg);
439 addargs(&remote_remote_args, "-oBatchmode=yes");
440 addargs(&args, "-oBatchmode=yes");
443 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
447 limit_kbps *= 1024; /* kbps */
448 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
457 ssh_program = xstrdup(optarg);
460 addargs(&args, "-v");
461 addargs(&remote_remote_args, "-v");
465 addargs(&args, "-q");
466 addargs(&remote_remote_args, "-q");
470 /* Server options. */
472 targetshouldbedirectory = 1;
474 case 'f': /* "from" */
482 setmode(0, O_BINARY);
491 if ((pwd = getpwuid(userid = getuid())) == NULL)
492 fatal("unknown user %u", (u_int) userid);
494 if (!isatty(STDOUT_FILENO))
498 /* Cannot pledge: -p allows setuid/setgid files... */
500 if (pledge("stdio rpath wpath cpath fattr tty proc exec",
507 remin = STDIN_FILENO;
508 remout = STDOUT_FILENO;
511 /* Follow "protocol", send data. */
524 targetshouldbedirectory = 1;
528 /* Command to be executed on remote system using "ssh". */
529 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
530 verbose_mode ? " -v" : "",
531 iamrecursive ? " -r" : "", pflag ? " -p" : "",
532 targetshouldbedirectory ? " -d" : "");
534 (void) signal(SIGPIPE, lostconn);
536 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
537 toremote(targ, argc, argv);
539 if (targetshouldbedirectory)
540 verifydir(argv[argc - 1]);
541 tolocal(argc, argv); /* Dest is local host. */
544 * Finally check the exit status of the ssh process, if one was forked
545 * and no error has occurred yet
547 if (do_cmd_pid != -1 && errs == 0) {
551 (void) close(remout);
552 if (waitpid(do_cmd_pid, &status, 0) == -1)
555 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
562 /* Callback from atomicio6 to update progress meter and limit bandwidth */
564 scpio(void *_cnt, size_t s)
566 off_t *cnt = (off_t *)_cnt;
570 bandwidth_limit(&bwlimit, s);
575 do_times(int fd, int verb, const struct stat *sb)
577 /* strlen(2^64) == 20; strlen(10^6) == 7 */
578 char buf[(20 + 7 + 2) * 2 + 2];
580 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
581 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
582 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
584 fprintf(stderr, "File mtime %lld atime %lld\n",
585 (long long)sb->st_mtime, (long long)sb->st_atime);
586 fprintf(stderr, "Sending file timestamps: %s", buf);
588 (void) atomicio(vwrite, fd, buf, strlen(buf));
593 toremote(char *targ, int argc, char **argv)
595 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
600 memset(&alist, '\0', sizeof(alist));
607 arg = xstrdup(argv[argc - 1]);
608 if ((thost = strrchr(arg, '@'))) {
619 if (tuser != NULL && !okname(tuser)) {
624 for (i = 0; i < argc - 1; i++) {
625 src = colon(argv[i]);
626 if (src && throughlocal) { /* extended remote to remote */
630 host = strrchr(argv[i], '@');
633 host = cleanhostname(host);
636 suser = pwd->pw_name;
637 else if (!okname(suser))
640 host = cleanhostname(argv[i]);
643 xasprintf(&bp, "%s -f %s%s", cmd,
644 *src == '-' ? "-- " : "", src);
645 if (do_cmd(host, suser, bp, &remin, &remout) < 0)
648 host = cleanhostname(thost);
649 xasprintf(&bp, "%s -t %s%s", cmd,
650 *targ == '-' ? "-- " : "", targ);
651 if (do_cmd2(host, tuser, bp, remin, remout) < 0)
655 (void) close(remout);
657 } else if (src) { /* standard remote to remote */
659 addargs(&alist, "%s", ssh_program);
660 addargs(&alist, "-x");
661 addargs(&alist, "-oClearAllForwardings=yes");
662 addargs(&alist, "-n");
663 for (j = 0; j < remote_remote_args.num; j++) {
664 addargs(&alist, "%s",
665 remote_remote_args.list[j]);
670 host = strrchr(argv[i], '@');
674 host = cleanhostname(host);
677 suser = pwd->pw_name;
678 else if (!okname(suser))
680 addargs(&alist, "-l");
681 addargs(&alist, "%s", suser);
683 host = cleanhostname(argv[i]);
685 addargs(&alist, "--");
686 addargs(&alist, "%s", host);
687 addargs(&alist, "%s", cmd);
688 addargs(&alist, "%s", src);
689 addargs(&alist, "%s%s%s:%s",
690 tuser ? tuser : "", tuser ? "@" : "",
692 if (do_local_cmd(&alist) != 0)
694 } else { /* local to remote */
696 xasprintf(&bp, "%s -t %s%s", cmd,
697 *targ == '-' ? "-- " : "", targ);
698 host = cleanhostname(thost);
699 if (do_cmd(host, tuser, bp, &remin,
713 tolocal(int argc, char **argv)
715 char *bp, *host, *src, *suser;
719 memset(&alist, '\0', sizeof(alist));
722 for (i = 0; i < argc - 1; i++) {
723 if (!(src = colon(argv[i]))) { /* Local to local. */
725 addargs(&alist, "%s", _PATH_CP);
727 addargs(&alist, "-r");
729 addargs(&alist, "-p");
730 addargs(&alist, "--");
731 addargs(&alist, "%s", argv[i]);
732 addargs(&alist, "%s", argv[argc-1]);
733 if (do_local_cmd(&alist))
740 if ((host = strrchr(argv[i], '@')) == NULL) {
747 suser = pwd->pw_name;
749 host = cleanhostname(host);
750 xasprintf(&bp, "%s -f %s%s",
751 cmd, *src == '-' ? "-- " : "", src);
752 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
758 sink(1, argv + argc - 1);
765 source(int argc, char **argv)
772 int fd = -1, haderr, indx;
773 char *last, *name, buf[2048], encname[PATH_MAX];
776 for (indx = 0; indx < argc; ++indx) {
780 while (len > 1 && name[len-1] == '/')
782 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
784 if (strchr(name, '\n') != NULL) {
785 strnvis(encname, name, sizeof(encname), VIS_NL);
788 if (fstat(fd, &stb) < 0) {
789 syserr: run_err("%s: %s", name, strerror(errno));
792 if (stb.st_size < 0) {
793 run_err("%s: %s", name, "Negative file size");
797 switch (stb.st_mode & S_IFMT) {
807 run_err("%s: not a regular file", name);
810 if ((last = strrchr(name, '/')) == NULL)
816 if (do_times(remout, verbose_mode, &stb) < 0)
819 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
820 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
821 (u_int) (stb.st_mode & FILEMODEMASK),
822 (long long)stb.st_size, last);
824 fmprintf(stderr, "Sending file modes: %s", buf);
825 (void) atomicio(vwrite, remout, buf, strlen(buf));
828 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
829 next: if (fd != -1) {
836 start_progress_meter(curfile, stb.st_size, &statbytes);
837 set_nonblock(remout);
838 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
840 if (i + (off_t)amt > stb.st_size)
841 amt = stb.st_size - i;
843 if ((nr = atomicio(read, fd,
844 bp->buf, amt)) != amt) {
846 memset(bp->buf + nr, 0, amt - nr);
849 /* Keep writing after error to retain sync */
851 (void)atomicio(vwrite, remout, bp->buf, amt);
852 memset(bp->buf, 0, amt);
855 if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
859 unset_nonblock(remout);
862 if (close(fd) < 0 && !haderr)
867 (void) atomicio(vwrite, remout, "", 1);
869 run_err("%s: %s", name, strerror(haderr));
872 stop_progress_meter();
877 rsource(char *name, struct stat *statp)
881 char *last, *vect[1], path[PATH_MAX];
883 if (!(dirp = opendir(name))) {
884 run_err("%s: %s", name, strerror(errno));
887 last = strrchr(name, '/');
893 if (do_times(remout, verbose_mode, statp) < 0) {
898 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
899 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
901 fmprintf(stderr, "Entering directory: %s", path);
902 (void) atomicio(vwrite, remout, path, strlen(path));
903 if (response() < 0) {
907 while ((dp = readdir(dirp)) != NULL) {
910 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
912 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
913 run_err("%s/%s: name too long", name, dp->d_name);
916 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
920 (void) closedir(dirp);
921 (void) atomicio(vwrite, remout, "E\n", 2);
925 #define TYPE_OVERFLOW(type, val) \
926 ((sizeof(type) == 4 && (val) > INT32_MAX) || \
927 (sizeof(type) == 8 && (val) > INT64_MAX) || \
928 (sizeof(type) != 4 && sizeof(type) != 8))
931 sink(int argc, char **argv)
941 int amt, exists, first, ofd;
942 mode_t mode, omode, mask;
943 off_t size, statbytes;
944 unsigned long long ull;
945 int setimes, targisdir, wrerrno = 0;
946 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
947 struct timeval tv[2];
951 #define SCREWUP(str) { why = str; goto screwup; }
953 if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
954 SCREWUP("Unexpected off_t/time_t size");
956 setimes = targisdir = 0;
961 run_err("ambiguous target");
965 if (targetshouldbedirectory)
968 (void) atomicio(vwrite, remout, "", 1);
969 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
971 for (first = 1;; first = 0) {
973 if (atomicio(read, remin, cp, 1) != 1)
976 SCREWUP("unexpected <newline>");
978 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
979 SCREWUP("lost connection");
981 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
984 fmprintf(stderr, "Sink: %s", buf);
986 if (buf[0] == '\01' || buf[0] == '\02') {
987 if (iamremote == 0) {
988 (void) snmprintf(visbuf, sizeof(visbuf),
989 NULL, "%s", buf + 1);
990 (void) atomicio(vwrite, STDERR_FILENO,
991 visbuf, strlen(visbuf));
999 (void) atomicio(vwrite, remout, "", 1);
1009 if (!isdigit((unsigned char)*cp))
1010 SCREWUP("mtime.sec not present");
1011 ull = strtoull(cp, &cp, 10);
1012 if (!cp || *cp++ != ' ')
1013 SCREWUP("mtime.sec not delimited");
1014 if (TYPE_OVERFLOW(time_t, ull))
1015 setimes = 0; /* out of range */
1017 mtime.tv_usec = strtol(cp, &cp, 10);
1018 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1019 mtime.tv_usec > 999999)
1020 SCREWUP("mtime.usec not delimited");
1021 if (!isdigit((unsigned char)*cp))
1022 SCREWUP("atime.sec not present");
1023 ull = strtoull(cp, &cp, 10);
1024 if (!cp || *cp++ != ' ')
1025 SCREWUP("atime.sec not delimited");
1026 if (TYPE_OVERFLOW(time_t, ull))
1027 setimes = 0; /* out of range */
1029 atime.tv_usec = strtol(cp, &cp, 10);
1030 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1031 atime.tv_usec > 999999)
1032 SCREWUP("atime.usec not delimited");
1033 (void) atomicio(vwrite, remout, "", 1);
1036 if (*cp != 'C' && *cp != 'D') {
1038 * Check for the case "rcp remote:foo\* local:bar".
1039 * In this case, the line "No match." can be returned
1040 * by the shell before the rcp command on the remote is
1041 * executed so the ^Aerror_message convention isn't
1048 SCREWUP("expected control record");
1051 for (++cp; cp < buf + 5; cp++) {
1052 if (*cp < '0' || *cp > '7')
1053 SCREWUP("bad mode");
1054 mode = (mode << 3) | (*cp - '0');
1057 SCREWUP("mode not delimited");
1059 if (!isdigit((unsigned char)*cp))
1060 SCREWUP("size not present");
1061 ull = strtoull(cp, &cp, 10);
1062 if (!cp || *cp++ != ' ')
1063 SCREWUP("size not delimited");
1064 if (TYPE_OVERFLOW(off_t, ull))
1065 SCREWUP("size out of range");
1068 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1069 run_err("error: unexpected filename: %s", cp);
1073 static char *namebuf;
1074 static size_t cursize;
1077 need = strlen(targ) + strlen(cp) + 250;
1078 if (need > cursize) {
1080 namebuf = xmalloc(need);
1083 (void) snprintf(namebuf, need, "%s%s%s", targ,
1084 strcmp(targ, "/") ? "/" : "", cp);
1089 exists = stat(np, &stb) == 0;
1090 if (buf[0] == 'D') {
1091 int mod_flag = pflag;
1093 SCREWUP("received directory without -r");
1095 if (!S_ISDIR(stb.st_mode)) {
1100 (void) chmod(np, mode);
1102 /* Handle copying from a read-only
1105 if (mkdir(np, mode | S_IRWXU) < 0)
1108 vect[0] = xstrdup(np);
1112 if (utimes(vect[0], tv) < 0)
1113 run_err("%s: set times: %s",
1114 vect[0], strerror(errno));
1117 (void) chmod(vect[0], mode);
1123 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1124 bad: run_err("%s: %s", np, strerror(errno));
1127 (void) atomicio(vwrite, remout, "", 1);
1128 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1137 start_progress_meter(curfile, size, &statbytes);
1138 set_nonblock(remin);
1139 for (count = i = 0; i < size; i += bp->cnt) {
1145 j = atomicio6(read, remin, cp, amt,
1148 run_err("%s", j != EPIPE ?
1150 "dropped connection");
1157 if (count == bp->cnt) {
1158 /* Keep reading so we stay sync'd up. */
1160 if (atomicio(vwrite, ofd, bp->buf,
1170 unset_nonblock(remin);
1171 if (count != 0 && wrerr == NO &&
1172 atomicio(vwrite, ofd, bp->buf, count) != count) {
1176 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1177 ftruncate(ofd, size) != 0) {
1178 run_err("%s: truncate: %s", np, strerror(errno));
1182 if (exists || omode != mode)
1184 if (fchmod(ofd, omode)) {
1185 #else /* HAVE_FCHMOD */
1186 if (chmod(np, omode)) {
1187 #endif /* HAVE_FCHMOD */
1188 run_err("%s: set mode: %s",
1189 np, strerror(errno));
1193 if (!exists && omode != mode)
1195 if (fchmod(ofd, omode & ~mask)) {
1196 #else /* HAVE_FCHMOD */
1197 if (chmod(np, omode & ~mask)) {
1198 #endif /* HAVE_FCHMOD */
1199 run_err("%s: set mode: %s",
1200 np, strerror(errno));
1204 if (close(ofd) == -1) {
1210 stop_progress_meter();
1211 if (setimes && wrerr == NO) {
1213 if (utimes(np, tv) < 0) {
1214 run_err("%s: set times: %s",
1215 np, strerror(errno));
1221 run_err("%s: %s", np, strerror(wrerrno));
1224 (void) atomicio(vwrite, remout, "", 1);
1231 run_err("protocol error: %s", why);
1238 char ch, *cp, resp, rbuf[2048], visbuf[2048];
1240 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1250 case 1: /* error, followed by error msg */
1251 case 2: /* fatal error, "" */
1253 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1256 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1260 (void) snmprintf(visbuf, sizeof(visbuf),
1261 NULL, "%s\n", rbuf);
1262 (void) atomicio(vwrite, STDERR_FILENO,
1263 visbuf, strlen(visbuf));
1276 (void) fprintf(stderr,
1277 "usage: scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1278 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1279 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1284 run_err(const char *fmt,...)
1290 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1291 (void) fprintf(fp, "%c", 0x01);
1292 (void) fprintf(fp, "scp: ");
1294 (void) vfprintf(fp, fmt, ap);
1296 (void) fprintf(fp, "\n");
1302 vfmprintf(stderr, fmt, ap);
1304 fprintf(stderr, "\n");
1313 if (!stat(cp, &stb)) {
1314 if (S_ISDIR(stb.st_mode))
1318 run_err("%s: %s", cp, strerror(errno));
1333 if (!isalpha(c) && !isdigit((unsigned char)c)) {
1348 bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1353 allocbuf(BUF *bp, int fd, int blksize)
1356 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1359 if (fstat(fd, &stb) < 0) {
1360 run_err("fstat: %s", strerror(errno));
1363 size = ROUNDUP(stb.st_blksize, blksize);
1366 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1368 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1369 if (bp->cnt >= size)
1371 bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1380 (void)write(STDERR_FILENO, "lost connection\n", 16);