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>
81 #ifdef HAVE_SYS_POLL_H
82 # include <sys/poll.h>
84 #ifdef HAVE_SYS_TIME_H
85 # include <sys/time.h>
102 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
107 #include "atomicio.h"
108 #include "pathnames.h"
111 #include "progressmeter.h"
113 extern char *__progname;
115 #define COPY_BUFLEN 16384
117 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
121 /* Struct for addargs */
124 /* Bandwidth limit */
125 off_t limit_rate = 0;
127 /* Name of current file being transferred. */
130 /* This is set to non-zero to enable verbose mode. */
131 int verbose_mode = 0;
133 /* This is set to zero if the progressmeter is not desired. */
134 int showprogress = 1;
136 /* This is the program to execute for the secured connection. ("ssh" or -S) */
137 char *ssh_program = _PATH_SSH_PROGRAM;
139 /* This is used to store the pid of ssh_program */
140 pid_t do_cmd_pid = -1;
145 if (do_cmd_pid > 1) {
146 kill(do_cmd_pid, signo ? signo : SIGTERM);
147 waitpid(do_cmd_pid, NULL, 0);
156 do_local_cmd(arglist *a)
163 fatal("do_local_cmd: no arguments");
166 fprintf(stderr, "Executing:");
167 for (i = 0; i < a->num; i++)
168 fprintf(stderr, " %s", a->list[i]);
169 fprintf(stderr, "\n");
171 if ((pid = fork()) == -1)
172 fatal("do_local_cmd: fork: %s", strerror(errno));
175 execvp(a->list[0], a->list);
181 signal(SIGTERM, killchild);
182 signal(SIGINT, killchild);
183 signal(SIGHUP, killchild);
185 while (waitpid(pid, &status, 0) == -1)
187 fatal("do_local_cmd: waitpid: %s", strerror(errno));
191 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
198 * This function executes the given command as the specified user on the
199 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
200 * assigns the input and output file descriptors on success.
204 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
206 int pin[2], pout[2], reserved[2];
210 "Executing: program %s host %s, user %s, command %s\n",
212 remuser ? remuser : "(unspecified)", cmd);
215 * Reserve two descriptors so that the real pipes won't get
216 * descriptors 0 and 1 because that will screw up dup2 below.
218 if (pipe(reserved) < 0)
219 fatal("pipe: %s", strerror(errno));
221 /* Create a socket pair for communicating with ssh. */
223 fatal("pipe: %s", strerror(errno));
225 fatal("pipe: %s", strerror(errno));
227 /* Free the reserved descriptors. */
231 /* Fork a child to execute the command on the remote host using ssh. */
233 if (do_cmd_pid == 0) {
242 replacearg(&args, 0, "%s", ssh_program);
244 addargs(&args, "-l%s", remuser);
245 addargs(&args, "%s", host);
246 addargs(&args, "%s", cmd);
248 execvp(ssh_program, args.list);
251 } else if (do_cmd_pid == -1) {
252 fatal("fork: %s", strerror(errno));
254 /* Parent. Close the other side, and return the local side. */
259 signal(SIGTERM, killchild);
260 signal(SIGINT, killchild);
261 signal(SIGHUP, killchild);
270 BUF *allocbuf(BUF *, int, int);
273 void run_err(const char *,...);
274 void verifydir(char *);
278 int errs, remin, remout;
279 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
282 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
285 void rsource(char *, struct stat *);
286 void sink(int, char *[]);
287 void source(int, char *[]);
288 void tolocal(int, char *[]);
289 void toremote(char *, int, char *[]);
290 size_t scpio(ssize_t (*)(int, void *, size_t), int, void *, size_t, off_t *);
294 main(int argc, char **argv)
296 int ch, fflag, tflag, status, n;
298 char *targ, *endp, **newargv;
302 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
305 /* Copy argv, because we modify it */
306 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
307 for (n = 0; n < argc; n++)
308 newargv[n] = xstrdup(argv[n]);
311 __progname = ssh_get_progname(argv[0]);
313 memset(&args, '\0', sizeof(args));
315 addargs(&args, "%s", ssh_program);
316 addargs(&args, "-x");
317 addargs(&args, "-oForwardAgent no");
318 addargs(&args, "-oPermitLocalCommand no");
319 addargs(&args, "-oClearAllForwardings yes");
322 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
324 /* User-visible flags. */
330 addargs(&args, "-%c", ch);
336 addargs(&args, "-%c%s", ch, optarg);
339 addargs(&args, "-p%s", optarg);
342 addargs(&args, "-oBatchmode yes");
345 speed = strtod(optarg, &endp);
346 if (speed <= 0 || *endp != '\0')
348 limit_rate = speed * 1024;
357 ssh_program = xstrdup(optarg);
360 addargs(&args, "-v");
364 addargs(&args, "-q");
368 /* Server options. */
370 targetshouldbedirectory = 1;
372 case 'f': /* "from" */
380 setmode(0, O_BINARY);
389 if ((pwd = getpwuid(userid = getuid())) == NULL)
390 fatal("unknown user %u", (u_int) userid);
392 if (!isatty(STDOUT_FILENO))
395 remin = STDIN_FILENO;
396 remout = STDOUT_FILENO;
399 /* Follow "protocol", send data. */
412 targetshouldbedirectory = 1;
416 /* Command to be executed on remote system using "ssh". */
417 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
418 verbose_mode ? " -v" : "",
419 iamrecursive ? " -r" : "", pflag ? " -p" : "",
420 targetshouldbedirectory ? " -d" : "");
422 (void) signal(SIGPIPE, lostconn);
424 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
425 toremote(targ, argc, argv);
427 if (targetshouldbedirectory)
428 verifydir(argv[argc - 1]);
429 tolocal(argc, argv); /* Dest is local host. */
432 * Finally check the exit status of the ssh process, if one was forked
433 * and no error has occured yet
435 if (do_cmd_pid != -1 && errs == 0) {
439 (void) close(remout);
440 if (waitpid(do_cmd_pid, &status, 0) == -1)
443 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
451 * atomicio-like wrapper that also applies bandwidth limits and updates
452 * the progressmeter counter.
455 scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
457 u_char *p = (u_char *)_p;
463 pfd.events = f == read ? POLLIN : POLLOUT;
464 for (offset = 0; offset < l;) {
465 r = f(fd, p + offset, l - offset);
473 if (errno == EAGAIN) {
474 (void)poll(&pfd, 1, -1); /* Ignore errors */
488 toremote(char *targ, int argc, char **argv)
490 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
494 memset(&alist, '\0', sizeof(alist));
501 arg = xstrdup(argv[argc - 1]);
502 if ((thost = strrchr(arg, '@'))) {
513 if (tuser != NULL && !okname(tuser)) {
518 for (i = 0; i < argc - 1; i++) {
519 src = colon(argv[i]);
520 if (src) { /* remote to remote */
522 addargs(&alist, "%s", ssh_program);
524 addargs(&alist, "-v");
525 addargs(&alist, "-x");
526 addargs(&alist, "-oClearAllForwardings yes");
527 addargs(&alist, "-n");
532 host = strrchr(argv[i], '@');
536 host = cleanhostname(host);
539 suser = pwd->pw_name;
540 else if (!okname(suser))
542 addargs(&alist, "-l");
543 addargs(&alist, "%s", suser);
545 host = cleanhostname(argv[i]);
547 addargs(&alist, "%s", host);
548 addargs(&alist, "%s", cmd);
549 addargs(&alist, "%s", src);
550 addargs(&alist, "%s%s%s:%s",
551 tuser ? tuser : "", tuser ? "@" : "",
553 if (do_local_cmd(&alist) != 0)
555 } else { /* local to remote */
557 xasprintf(&bp, "%s -t %s", cmd, targ);
558 host = cleanhostname(thost);
559 if (do_cmd(host, tuser, bp, &remin,
573 tolocal(int argc, char **argv)
575 char *bp, *host, *src, *suser;
579 memset(&alist, '\0', sizeof(alist));
582 for (i = 0; i < argc - 1; i++) {
583 if (!(src = colon(argv[i]))) { /* Local to local. */
585 addargs(&alist, "%s", _PATH_CP);
587 addargs(&alist, "-r");
589 addargs(&alist, "-p");
590 addargs(&alist, "%s", argv[i]);
591 addargs(&alist, "%s", argv[argc-1]);
592 if (do_local_cmd(&alist))
599 if ((host = strrchr(argv[i], '@')) == NULL) {
606 suser = pwd->pw_name;
608 host = cleanhostname(host);
609 xasprintf(&bp, "%s -f %s", cmd, src);
610 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
616 sink(1, argv + argc - 1);
623 source(int argc, char **argv)
628 off_t i, amt, statbytes;
629 int fd = -1, haderr, indx;
630 char *last, *name, buf[2048], encname[MAXPATHLEN];
633 for (indx = 0; indx < argc; ++indx) {
637 while (len > 1 && name[len-1] == '/')
639 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
641 if (strchr(name, '\n') != NULL) {
642 strnvis(encname, name, sizeof(encname), VIS_NL);
645 if (fstat(fd, &stb) < 0) {
646 syserr: run_err("%s: %s", name, strerror(errno));
650 switch (stb.st_mode & S_IFMT) {
660 run_err("%s: not a regular file", name);
663 if ((last = strrchr(name, '/')) == NULL)
670 * Make it compatible with possible future
671 * versions expecting microseconds.
673 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
674 (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
675 (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
677 fprintf(stderr, "File mtime %ld atime %ld\n",
678 (long)stb.st_mtime, (long)stb.st_atime);
679 fprintf(stderr, "Sending file timestamps: %s",
682 (void) atomicio(vwrite, remout, buf, strlen(buf));
686 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
687 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
688 (u_int) (stb.st_mode & FILEMODEMASK),
689 (long long)stb.st_size, last);
691 fprintf(stderr, "Sending file modes: %s", buf);
693 (void) atomicio(vwrite, remout, buf, strlen(buf));
696 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
697 next: if (fd != -1) {
704 start_progress_meter(curfile, stb.st_size, &statbytes);
705 set_nonblock(remout);
706 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
708 if (i + amt > stb.st_size)
709 amt = stb.st_size - i;
711 if (atomicio(read, fd, bp->buf, amt) != amt)
714 /* Keep writing after error to retain sync */
716 (void)atomicio(vwrite, remout, bp->buf, amt);
719 if (scpio(vwrite, remout, bp->buf, amt,
723 unset_nonblock(remout);
725 stop_progress_meter();
728 if (close(fd) < 0 && !haderr)
733 (void) atomicio(vwrite, remout, "", 1);
735 run_err("%s: %s", name, strerror(haderr));
741 rsource(char *name, struct stat *statp)
745 char *last, *vect[1], path[1100];
747 if (!(dirp = opendir(name))) {
748 run_err("%s: %s", name, strerror(errno));
751 last = strrchr(name, '/');
757 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
758 (u_long) statp->st_mtime,
759 (u_long) statp->st_atime);
760 (void) atomicio(vwrite, remout, path, strlen(path));
761 if (response() < 0) {
766 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
767 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
769 fprintf(stderr, "Entering directory: %s", path);
770 (void) atomicio(vwrite, remout, path, strlen(path));
771 if (response() < 0) {
775 while ((dp = readdir(dirp)) != NULL) {
778 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
780 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
781 run_err("%s/%s: name too long", name, dp->d_name);
784 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
788 (void) closedir(dirp);
789 (void) atomicio(vwrite, remout, "E\n", 2);
796 static struct timeval bwstart, bwend;
797 static int lamt, thresh = 16384;
799 struct timespec ts, rm;
801 if (!timerisset(&bwstart)) {
802 gettimeofday(&bwstart, NULL);
810 gettimeofday(&bwend, NULL);
811 timersub(&bwend, &bwstart, &bwend);
812 if (!timerisset(&bwend))
816 waitlen = (double)1000000L * lamt / limit_rate;
818 bwstart.tv_sec = waitlen / 1000000L;
819 bwstart.tv_usec = waitlen % 1000000L;
821 if (timercmp(&bwstart, &bwend, >)) {
822 timersub(&bwstart, &bwend, &bwend);
824 /* Adjust the wait time */
829 } else if (bwend.tv_usec < 10000) {
831 if (thresh > COPY_BUFLEN * 4)
832 thresh = COPY_BUFLEN * 4;
835 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
836 while (nanosleep(&ts, &rm) == -1) {
844 gettimeofday(&bwstart, NULL);
848 sink(int argc, char **argv)
858 int amt, exists, first, ofd;
859 mode_t mode, omode, mask;
860 off_t size, statbytes;
861 int setimes, targisdir, wrerrno = 0;
862 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
863 struct timeval tv[2];
867 #define SCREWUP(str) { why = str; goto screwup; }
869 setimes = targisdir = 0;
874 run_err("ambiguous target");
878 if (targetshouldbedirectory)
881 (void) atomicio(vwrite, remout, "", 1);
882 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
884 for (first = 1;; first = 0) {
886 if (atomicio(read, remin, cp, 1) != 1)
889 SCREWUP("unexpected <newline>");
891 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
892 SCREWUP("lost connection");
894 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
897 fprintf(stderr, "Sink: %s", buf);
899 if (buf[0] == '\01' || buf[0] == '\02') {
901 (void) atomicio(vwrite, STDERR_FILENO,
902 buf + 1, strlen(buf + 1));
909 (void) atomicio(vwrite, remout, "", 1);
919 mtime.tv_sec = strtol(cp, &cp, 10);
920 if (!cp || *cp++ != ' ')
921 SCREWUP("mtime.sec not delimited");
922 mtime.tv_usec = strtol(cp, &cp, 10);
923 if (!cp || *cp++ != ' ')
924 SCREWUP("mtime.usec not delimited");
925 atime.tv_sec = strtol(cp, &cp, 10);
926 if (!cp || *cp++ != ' ')
927 SCREWUP("atime.sec not delimited");
928 atime.tv_usec = strtol(cp, &cp, 10);
929 if (!cp || *cp++ != '\0')
930 SCREWUP("atime.usec not delimited");
931 (void) atomicio(vwrite, remout, "", 1);
934 if (*cp != 'C' && *cp != 'D') {
936 * Check for the case "rcp remote:foo\* local:bar".
937 * In this case, the line "No match." can be returned
938 * by the shell before the rcp command on the remote is
939 * executed so the ^Aerror_message convention isn't
946 SCREWUP("expected control record");
949 for (++cp; cp < buf + 5; cp++) {
950 if (*cp < '0' || *cp > '7')
952 mode = (mode << 3) | (*cp - '0');
955 SCREWUP("mode not delimited");
957 for (size = 0; isdigit(*cp);)
958 size = size * 10 + (*cp++ - '0');
960 SCREWUP("size not delimited");
961 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
962 run_err("error: unexpected filename: %s", cp);
966 static char *namebuf;
967 static size_t cursize;
970 need = strlen(targ) + strlen(cp) + 250;
971 if (need > cursize) {
974 namebuf = xmalloc(need);
977 (void) snprintf(namebuf, need, "%s%s%s", targ,
978 strcmp(targ, "/") ? "/" : "", cp);
983 exists = stat(np, &stb) == 0;
985 int mod_flag = pflag;
987 SCREWUP("received directory without -r");
989 if (!S_ISDIR(stb.st_mode)) {
994 (void) chmod(np, mode);
996 /* Handle copying from a read-only
999 if (mkdir(np, mode | S_IRWXU) < 0)
1002 vect[0] = xstrdup(np);
1006 if (utimes(vect[0], tv) < 0)
1007 run_err("%s: set times: %s",
1008 vect[0], strerror(errno));
1011 (void) chmod(vect[0], mode);
1018 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1019 bad: run_err("%s: %s", np, strerror(errno));
1022 (void) atomicio(vwrite, remout, "", 1);
1023 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1032 start_progress_meter(curfile, size, &statbytes);
1033 set_nonblock(remin);
1034 for (count = i = 0; i < size; i += bp->cnt) {
1040 j = scpio(read, remin, cp, amt, &statbytes);
1042 run_err("%s", j != EPIPE ?
1044 "dropped connection");
1051 if (count == bp->cnt) {
1052 /* Keep reading so we stay sync'd up. */
1054 if (atomicio(vwrite, ofd, bp->buf,
1064 unset_nonblock(remin);
1066 stop_progress_meter();
1067 if (count != 0 && wrerr == NO &&
1068 atomicio(vwrite, ofd, bp->buf, count) != count) {
1072 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1073 ftruncate(ofd, size) != 0) {
1074 run_err("%s: truncate: %s", np, strerror(errno));
1078 if (exists || omode != mode)
1080 if (fchmod(ofd, omode)) {
1081 #else /* HAVE_FCHMOD */
1082 if (chmod(np, omode)) {
1083 #endif /* HAVE_FCHMOD */
1084 run_err("%s: set mode: %s",
1085 np, strerror(errno));
1089 if (!exists && omode != mode)
1091 if (fchmod(ofd, omode & ~mask)) {
1092 #else /* HAVE_FCHMOD */
1093 if (chmod(np, omode & ~mask)) {
1094 #endif /* HAVE_FCHMOD */
1095 run_err("%s: set mode: %s",
1096 np, strerror(errno));
1100 if (close(ofd) == -1) {
1105 if (setimes && wrerr == NO) {
1107 if (utimes(np, tv) < 0) {
1108 run_err("%s: set times: %s",
1109 np, strerror(errno));
1115 run_err("%s: %s", np, strerror(wrerrno));
1118 (void) atomicio(vwrite, remout, "", 1);
1125 run_err("protocol error: %s", why);
1132 char ch, *cp, resp, rbuf[2048];
1134 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1144 case 1: /* error, followed by error msg */
1145 case 2: /* fatal error, "" */
1147 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1150 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1153 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1165 (void) fprintf(stderr,
1166 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1167 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1168 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1173 run_err(const char *fmt,...)
1179 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1180 (void) fprintf(fp, "%c", 0x01);
1181 (void) fprintf(fp, "scp: ");
1183 (void) vfprintf(fp, fmt, ap);
1185 (void) fprintf(fp, "\n");
1191 vfprintf(stderr, fmt, ap);
1193 fprintf(stderr, "\n");
1202 if (!stat(cp, &stb)) {
1203 if (S_ISDIR(stb.st_mode))
1207 run_err("%s: %s", cp, strerror(errno));
1222 if (!isalpha(c) && !isdigit(c)) {
1237 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1242 allocbuf(BUF *bp, int fd, int blksize)
1245 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1248 if (fstat(fd, &stb) < 0) {
1249 run_err("fstat: %s", strerror(errno));
1252 size = roundup(stb.st_blksize, blksize);
1255 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1257 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1258 if (bp->cnt >= size)
1260 if (bp->buf == NULL)
1261 bp->buf = xmalloc(size);
1263 bp->buf = xrealloc(bp->buf, 1, size);
1264 memset(bp->buf, 0, size);
1273 write(STDERR_FILENO, "lost connection\n", 16);