1 /* $OpenBSD: scp.c,v 1.162 2008/01/01 09:06:39 dtucker 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 #include <sys/param.h>
78 #ifdef HAVE_SYS_STAT_H
79 # include <sys/stat.h>
84 # ifdef HAVE_SYS_POLL_H
85 # include <sys/poll.h>
88 #ifdef HAVE_SYS_TIME_H
89 # include <sys/time.h>
106 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
111 #include "atomicio.h"
112 #include "pathnames.h"
115 #include "progressmeter.h"
117 extern char *__progname;
119 #define COPY_BUFLEN 16384
121 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
125 /* Struct for addargs */
128 /* Bandwidth limit */
129 off_t limit_rate = 0;
131 /* Name of current file being transferred. */
134 /* This is set to non-zero to enable verbose mode. */
135 int verbose_mode = 0;
137 /* This is set to zero if the progressmeter is not desired. */
138 int showprogress = 1;
140 /* This is the program to execute for the secured connection. ("ssh" or -S) */
143 /* This is used to store the pid of ssh_program */
144 pid_t do_cmd_pid = -1;
149 if (do_cmd_pid > 1) {
150 kill(do_cmd_pid, signo ? signo : SIGTERM);
151 waitpid(do_cmd_pid, NULL, 0);
160 do_local_cmd(arglist *a)
167 fatal("do_local_cmd: no arguments");
170 fprintf(stderr, "Executing:");
171 for (i = 0; i < a->num; i++)
172 fprintf(stderr, " %s", a->list[i]);
173 fprintf(stderr, "\n");
175 if ((pid = fork()) == -1)
176 fatal("do_local_cmd: fork: %s", strerror(errno));
179 execvp(a->list[0], a->list);
185 signal(SIGTERM, killchild);
186 signal(SIGINT, killchild);
187 signal(SIGHUP, killchild);
189 while (waitpid(pid, &status, 0) == -1)
191 fatal("do_local_cmd: waitpid: %s", strerror(errno));
195 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
202 * This function executes the given command as the specified user on the
203 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
204 * assigns the input and output file descriptors on success.
208 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
210 int pin[2], pout[2], reserved[2];
214 "Executing: program %s host %s, user %s, command %s\n",
216 remuser ? remuser : "(unspecified)", cmd);
219 * Reserve two descriptors so that the real pipes won't get
220 * descriptors 0 and 1 because that will screw up dup2 below.
222 if (pipe(reserved) < 0)
223 fatal("pipe: %s", strerror(errno));
225 /* Create a socket pair for communicating with ssh. */
227 fatal("pipe: %s", strerror(errno));
229 fatal("pipe: %s", strerror(errno));
231 /* Free the reserved descriptors. */
235 /* Fork a child to execute the command on the remote host using ssh. */
237 if (do_cmd_pid == 0) {
246 replacearg(&args, 0, "%s", ssh_program);
248 addargs(&args, "-l%s", remuser);
249 addargs(&args, "%s", host);
250 addargs(&args, "%s", cmd);
252 execvp(ssh_program, args.list);
255 } else if (do_cmd_pid == -1) {
256 fatal("fork: %s", strerror(errno));
258 /* Parent. Close the other side, and return the local side. */
263 signal(SIGTERM, killchild);
264 signal(SIGINT, killchild);
265 signal(SIGHUP, killchild);
274 BUF *allocbuf(BUF *, int, int);
277 void run_err(const char *,...);
278 void verifydir(char *);
282 int errs, remin, remout;
283 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
286 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
289 void rsource(char *, struct stat *);
290 void sink(int, char *[]);
291 void source(int, char *[]);
292 void tolocal(int, char *[]);
293 void toremote(char *, int, char *[]);
294 size_t scpio(ssize_t (*)(int, void *, size_t), int, void *, size_t, off_t *);
298 main(int argc, char **argv)
300 int ch, fflag, tflag, status, n;
302 char *targ, *endp, **newargv;
306 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
309 /* Copy argv, because we modify it */
310 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
311 for (n = 0; n < argc; n++)
312 newargv[n] = xstrdup(argv[n]);
315 __progname = ssh_get_progname(argv[0]);
317 ssh_program = _PATH_SSH_PROGRAM;
319 memset(&args, '\0', sizeof(args));
321 addargs(&args, "%s", ssh_program);
322 addargs(&args, "-x");
323 addargs(&args, "-oForwardAgent no");
324 addargs(&args, "-oPermitLocalCommand no");
325 addargs(&args, "-oClearAllForwardings yes");
328 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
330 /* User-visible flags. */
336 addargs(&args, "-%c", ch);
342 addargs(&args, "-%c%s", ch, optarg);
345 addargs(&args, "-p%s", optarg);
348 addargs(&args, "-oBatchmode yes");
351 speed = strtod(optarg, &endp);
352 if (speed <= 0 || *endp != '\0')
354 limit_rate = speed * 1024;
363 ssh_program = xstrdup(optarg);
366 addargs(&args, "-v");
370 addargs(&args, "-q");
374 /* Server options. */
376 targetshouldbedirectory = 1;
378 case 'f': /* "from" */
386 setmode(0, O_BINARY);
395 if ((pwd = getpwuid(userid = getuid())) == NULL)
396 fatal("unknown user %u", (u_int) userid);
398 if (!isatty(STDOUT_FILENO))
401 remin = STDIN_FILENO;
402 remout = STDOUT_FILENO;
405 /* Follow "protocol", send data. */
418 targetshouldbedirectory = 1;
422 /* Command to be executed on remote system using "ssh". */
423 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
424 verbose_mode ? " -v" : "",
425 iamrecursive ? " -r" : "", pflag ? " -p" : "",
426 targetshouldbedirectory ? " -d" : "");
428 (void) signal(SIGPIPE, lostconn);
430 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
431 toremote(targ, argc, argv);
433 if (targetshouldbedirectory)
434 verifydir(argv[argc - 1]);
435 tolocal(argc, argv); /* Dest is local host. */
438 * Finally check the exit status of the ssh process, if one was forked
439 * and no error has occured yet
441 if (do_cmd_pid != -1 && errs == 0) {
445 (void) close(remout);
446 if (waitpid(do_cmd_pid, &status, 0) == -1)
449 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
457 * atomicio-like wrapper that also applies bandwidth limits and updates
458 * the progressmeter counter.
461 scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
463 u_char *p = (u_char *)_p;
469 pfd.events = f == read ? POLLIN : POLLOUT;
470 for (offset = 0; offset < l;) {
471 r = f(fd, p + offset, l - offset);
479 if (errno == EAGAIN) {
480 (void)poll(&pfd, 1, -1); /* Ignore errors */
494 toremote(char *targ, int argc, char **argv)
496 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
500 memset(&alist, '\0', sizeof(alist));
507 arg = xstrdup(argv[argc - 1]);
508 if ((thost = strrchr(arg, '@'))) {
519 if (tuser != NULL && !okname(tuser)) {
524 for (i = 0; i < argc - 1; i++) {
525 src = colon(argv[i]);
526 if (src) { /* remote to remote */
528 addargs(&alist, "%s", ssh_program);
530 addargs(&alist, "-v");
531 addargs(&alist, "-x");
532 addargs(&alist, "-oClearAllForwardings yes");
533 addargs(&alist, "-n");
538 host = strrchr(argv[i], '@');
542 host = cleanhostname(host);
545 suser = pwd->pw_name;
546 else if (!okname(suser))
548 addargs(&alist, "-l");
549 addargs(&alist, "%s", suser);
551 host = cleanhostname(argv[i]);
553 addargs(&alist, "%s", host);
554 addargs(&alist, "%s", cmd);
555 addargs(&alist, "%s", src);
556 addargs(&alist, "%s%s%s:%s",
557 tuser ? tuser : "", tuser ? "@" : "",
559 if (do_local_cmd(&alist) != 0)
561 } else { /* local to remote */
563 xasprintf(&bp, "%s -t %s", cmd, targ);
564 host = cleanhostname(thost);
565 if (do_cmd(host, tuser, bp, &remin,
579 tolocal(int argc, char **argv)
581 char *bp, *host, *src, *suser;
585 memset(&alist, '\0', sizeof(alist));
588 for (i = 0; i < argc - 1; i++) {
589 if (!(src = colon(argv[i]))) { /* Local to local. */
591 addargs(&alist, "%s", _PATH_CP);
593 addargs(&alist, "-r");
595 addargs(&alist, "-p");
596 addargs(&alist, "%s", argv[i]);
597 addargs(&alist, "%s", argv[argc-1]);
598 if (do_local_cmd(&alist))
605 if ((host = strrchr(argv[i], '@')) == NULL) {
612 suser = pwd->pw_name;
614 host = cleanhostname(host);
615 xasprintf(&bp, "%s -f %s", cmd, src);
616 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
622 sink(1, argv + argc - 1);
629 source(int argc, char **argv)
634 off_t i, amt, statbytes;
635 int fd = -1, haderr, indx;
636 char *last, *name, buf[16384], encname[MAXPATHLEN];
639 for (indx = 0; indx < argc; ++indx) {
643 while (len > 1 && name[len-1] == '/')
645 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
647 if (strchr(name, '\n') != NULL) {
648 strnvis(encname, name, sizeof(encname), VIS_NL);
651 if (fstat(fd, &stb) < 0) {
652 syserr: run_err("%s: %s", name, strerror(errno));
656 switch (stb.st_mode & S_IFMT) {
666 run_err("%s: not a regular file", name);
669 if ((last = strrchr(name, '/')) == NULL)
676 * Make it compatible with possible future
677 * versions expecting microseconds.
679 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
680 (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
681 (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
683 fprintf(stderr, "File mtime %ld atime %ld\n",
684 (long)stb.st_mtime, (long)stb.st_atime);
685 fprintf(stderr, "Sending file timestamps: %s",
688 (void) atomicio(vwrite, remout, buf, strlen(buf));
692 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
693 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
694 (u_int) (stb.st_mode & FILEMODEMASK),
695 (long long)stb.st_size, last);
697 fprintf(stderr, "Sending file modes: %s", buf);
699 (void) atomicio(vwrite, remout, buf, strlen(buf));
702 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
703 next: if (fd != -1) {
710 start_progress_meter(curfile, stb.st_size, &statbytes);
711 set_nonblock(remout);
712 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
714 if (i + amt > stb.st_size)
715 amt = stb.st_size - i;
717 if (atomicio(read, fd, bp->buf, amt) != amt)
720 /* Keep writing after error to retain sync */
722 (void)atomicio(vwrite, remout, bp->buf, amt);
725 if (scpio(vwrite, remout, bp->buf, amt,
729 unset_nonblock(remout);
731 stop_progress_meter();
734 if (close(fd) < 0 && !haderr)
739 (void) atomicio(vwrite, remout, "", 1);
741 run_err("%s: %s", name, strerror(haderr));
747 rsource(char *name, struct stat *statp)
751 char *last, *vect[1], path[1100];
753 if (!(dirp = opendir(name))) {
754 run_err("%s: %s", name, strerror(errno));
757 last = strrchr(name, '/');
763 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
764 (u_long) statp->st_mtime,
765 (u_long) statp->st_atime);
766 (void) atomicio(vwrite, remout, path, strlen(path));
767 if (response() < 0) {
772 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
773 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
775 fprintf(stderr, "Entering directory: %s", path);
776 (void) atomicio(vwrite, remout, path, strlen(path));
777 if (response() < 0) {
781 while ((dp = readdir(dirp)) != NULL) {
784 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
786 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
787 run_err("%s/%s: name too long", name, dp->d_name);
790 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
794 (void) closedir(dirp);
795 (void) atomicio(vwrite, remout, "E\n", 2);
802 static struct timeval bwstart, bwend;
803 static int lamt, thresh = 16384;
805 struct timespec ts, rm;
807 if (!timerisset(&bwstart)) {
808 gettimeofday(&bwstart, NULL);
816 gettimeofday(&bwend, NULL);
817 timersub(&bwend, &bwstart, &bwend);
818 if (!timerisset(&bwend))
822 waitlen = (double)1000000L * lamt / limit_rate;
824 bwstart.tv_sec = waitlen / 1000000L;
825 bwstart.tv_usec = waitlen % 1000000L;
827 if (timercmp(&bwstart, &bwend, >)) {
828 timersub(&bwstart, &bwend, &bwend);
830 /* Adjust the wait time */
835 } else if (bwend.tv_usec < 10000) {
837 if (thresh > COPY_BUFLEN * 4)
838 thresh = COPY_BUFLEN * 4;
841 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
842 while (nanosleep(&ts, &rm) == -1) {
850 gettimeofday(&bwstart, NULL);
854 sink(int argc, char **argv)
864 int amt, exists, first, ofd;
865 mode_t mode, omode, mask;
866 off_t size, statbytes;
867 int setimes, targisdir, wrerrno = 0;
868 char ch, *cp, *np, *targ, *why, *vect[1], buf[16384];
869 struct timeval tv[2];
873 #define SCREWUP(str) { why = str; goto screwup; }
875 setimes = targisdir = 0;
880 run_err("ambiguous target");
884 if (targetshouldbedirectory)
887 (void) atomicio(vwrite, remout, "", 1);
888 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
890 for (first = 1;; first = 0) {
892 if (atomicio(read, remin, cp, 1) != 1)
895 SCREWUP("unexpected <newline>");
897 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
898 SCREWUP("lost connection");
900 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
903 fprintf(stderr, "Sink: %s", buf);
905 if (buf[0] == '\01' || buf[0] == '\02') {
907 (void) atomicio(vwrite, STDERR_FILENO,
908 buf + 1, strlen(buf + 1));
915 (void) atomicio(vwrite, remout, "", 1);
925 mtime.tv_sec = strtol(cp, &cp, 10);
926 if (!cp || *cp++ != ' ')
927 SCREWUP("mtime.sec not delimited");
928 mtime.tv_usec = strtol(cp, &cp, 10);
929 if (!cp || *cp++ != ' ')
930 SCREWUP("mtime.usec not delimited");
931 atime.tv_sec = strtol(cp, &cp, 10);
932 if (!cp || *cp++ != ' ')
933 SCREWUP("atime.sec not delimited");
934 atime.tv_usec = strtol(cp, &cp, 10);
935 if (!cp || *cp++ != '\0')
936 SCREWUP("atime.usec not delimited");
937 (void) atomicio(vwrite, remout, "", 1);
940 if (*cp != 'C' && *cp != 'D') {
942 * Check for the case "rcp remote:foo\* local:bar".
943 * In this case, the line "No match." can be returned
944 * by the shell before the rcp command on the remote is
945 * executed so the ^Aerror_message convention isn't
952 SCREWUP("expected control record");
955 for (++cp; cp < buf + 5; cp++) {
956 if (*cp < '0' || *cp > '7')
958 mode = (mode << 3) | (*cp - '0');
961 SCREWUP("mode not delimited");
963 for (size = 0; isdigit(*cp);)
964 size = size * 10 + (*cp++ - '0');
966 SCREWUP("size not delimited");
967 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
968 run_err("error: unexpected filename: %s", cp);
972 static char *namebuf;
973 static size_t cursize;
976 need = strlen(targ) + strlen(cp) + 250;
977 if (need > cursize) {
980 namebuf = xmalloc(need);
983 (void) snprintf(namebuf, need, "%s%s%s", targ,
984 strcmp(targ, "/") ? "/" : "", cp);
989 exists = stat(np, &stb) == 0;
991 int mod_flag = pflag;
993 SCREWUP("received directory without -r");
995 if (!S_ISDIR(stb.st_mode)) {
1000 (void) chmod(np, mode);
1002 /* Handle copying from a read-only
1005 if (mkdir(np, mode | S_IRWXU) < 0)
1008 vect[0] = xstrdup(np);
1012 if (utimes(vect[0], tv) < 0)
1013 run_err("%s: set times: %s",
1014 vect[0], strerror(errno));
1017 (void) chmod(vect[0], mode);
1024 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1025 bad: run_err("%s: %s", np, strerror(errno));
1028 (void) atomicio(vwrite, remout, "", 1);
1029 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1038 start_progress_meter(curfile, size, &statbytes);
1039 set_nonblock(remin);
1040 for (count = i = 0; i < size; i += bp->cnt) {
1046 j = scpio(read, remin, cp, amt, &statbytes);
1048 run_err("%s", j != EPIPE ?
1050 "dropped connection");
1057 if (count == bp->cnt) {
1058 /* Keep reading so we stay sync'd up. */
1060 if (atomicio(vwrite, ofd, bp->buf,
1070 unset_nonblock(remin);
1072 stop_progress_meter();
1073 if (count != 0 && wrerr == NO &&
1074 atomicio(vwrite, ofd, bp->buf, count) != count) {
1078 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1079 ftruncate(ofd, size) != 0) {
1080 run_err("%s: truncate: %s", np, strerror(errno));
1084 if (exists || omode != mode)
1086 if (fchmod(ofd, omode)) {
1087 #else /* HAVE_FCHMOD */
1088 if (chmod(np, omode)) {
1089 #endif /* HAVE_FCHMOD */
1090 run_err("%s: set mode: %s",
1091 np, strerror(errno));
1095 if (!exists && omode != mode)
1097 if (fchmod(ofd, omode & ~mask)) {
1098 #else /* HAVE_FCHMOD */
1099 if (chmod(np, omode & ~mask)) {
1100 #endif /* HAVE_FCHMOD */
1101 run_err("%s: set mode: %s",
1102 np, strerror(errno));
1106 if (close(ofd) == -1) {
1111 if (setimes && wrerr == NO) {
1113 if (utimes(np, tv) < 0) {
1114 run_err("%s: set times: %s",
1115 np, strerror(errno));
1121 run_err("%s: %s", np, strerror(wrerrno));
1124 (void) atomicio(vwrite, remout, "", 1);
1131 run_err("protocol error: %s", why);
1138 char ch, *cp, resp, rbuf[2048];
1140 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1150 case 1: /* error, followed by error msg */
1151 case 2: /* fatal error, "" */
1153 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1156 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1159 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1171 (void) fprintf(stderr,
1172 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1173 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1174 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1179 run_err(const char *fmt,...)
1185 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1186 (void) fprintf(fp, "%c", 0x01);
1187 (void) fprintf(fp, "scp: ");
1189 (void) vfprintf(fp, fmt, ap);
1191 (void) fprintf(fp, "\n");
1197 vfprintf(stderr, fmt, ap);
1199 fprintf(stderr, "\n");
1208 if (!stat(cp, &stb)) {
1209 if (S_ISDIR(stb.st_mode))
1213 run_err("%s: %s", cp, strerror(errno));
1228 if (!isalpha(c) && !isdigit(c)) {
1243 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1248 allocbuf(BUF *bp, int fd, int blksize)
1251 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1254 if (fstat(fd, &stb) < 0) {
1255 run_err("fstat: %s", strerror(errno));
1258 size = roundup(stb.st_blksize, blksize);
1261 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1263 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1264 if (bp->cnt >= size)
1266 if (bp->buf == NULL)
1267 bp->buf = xmalloc(size);
1269 bp->buf = xrealloc(bp->buf, 1, size);
1270 memset(bp->buf, 0, size);
1279 write(STDERR_FILENO, "lost connection\n", 16);