1 /* $OpenBSD: scp.c,v 1.170 2010/12/09 14:13:33 jmc 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);
122 int do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout);
124 /* Struct for addargs */
126 arglist remote_remote_args;
128 /* Bandwidth limit */
129 long long limit_kbps = 0;
130 struct bwlimit bwlimit;
132 /* Name of current file being transferred. */
135 /* This is set to non-zero to enable verbose mode. */
136 int verbose_mode = 0;
138 /* This is set to zero if the progressmeter is not desired. */
139 int showprogress = 1;
142 * This is set to non-zero if remote-remote copy should be piped
143 * through this process.
145 int throughlocal = 0;
147 /* This is the program to execute for the secured connection. ("ssh" or -S) */
148 char *ssh_program = _PATH_SSH_PROGRAM;
150 /* This is used to store the pid of ssh_program */
151 pid_t do_cmd_pid = -1;
156 if (do_cmd_pid > 1) {
157 kill(do_cmd_pid, signo ? signo : SIGTERM);
158 waitpid(do_cmd_pid, NULL, 0);
171 if (do_cmd_pid > 1) {
172 kill(do_cmd_pid, signo);
173 while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
176 kill(getpid(), SIGSTOP);
181 do_local_cmd(arglist *a)
188 fatal("do_local_cmd: no arguments");
191 fprintf(stderr, "Executing:");
192 for (i = 0; i < a->num; i++) {
194 fprintf(stderr, " %s", a->list[i]);
197 * TODO: misbehaves if a->list[i] contains a
200 fprintf(stderr, " '%s'", a->list[i]);
202 fprintf(stderr, "\n");
204 if ((pid = fork()) == -1)
205 fatal("do_local_cmd: fork: %s", strerror(errno));
208 execvp(a->list[0], a->list);
214 signal(SIGTERM, killchild);
215 signal(SIGINT, killchild);
216 signal(SIGHUP, killchild);
218 while (waitpid(pid, &status, 0) == -1)
220 fatal("do_local_cmd: waitpid: %s", strerror(errno));
224 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
231 * This function executes the given command as the specified user on the
232 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
233 * assigns the input and output file descriptors on success.
237 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
239 int pin[2], pout[2], reserved[2];
243 "Executing: program %s host %s, user %s, command %s\n",
245 remuser ? remuser : "(unspecified)", cmd);
248 * Reserve two descriptors so that the real pipes won't get
249 * descriptors 0 and 1 because that will screw up dup2 below.
251 if (pipe(reserved) < 0)
252 fatal("pipe: %s", strerror(errno));
254 /* Create a socket pair for communicating with ssh. */
256 fatal("pipe: %s", strerror(errno));
258 fatal("pipe: %s", strerror(errno));
260 /* Free the reserved descriptors. */
264 signal(SIGTSTP, suspchild);
265 signal(SIGTTIN, suspchild);
266 signal(SIGTTOU, suspchild);
268 /* Fork a child to execute the command on the remote host using ssh. */
270 if (do_cmd_pid == 0) {
279 replacearg(&args, 0, "%s", ssh_program);
280 if (remuser != NULL) {
281 addargs(&args, "-l");
282 addargs(&args, "%s", remuser);
284 addargs(&args, "--");
285 addargs(&args, "%s", host);
286 addargs(&args, "%s", cmd);
288 execvp(ssh_program, args.list);
291 } else if (do_cmd_pid == -1) {
292 fatal("fork: %s", strerror(errno));
294 /* Parent. Close the other side, and return the local side. */
299 signal(SIGTERM, killchild);
300 signal(SIGINT, killchild);
301 signal(SIGHUP, killchild);
306 * This functions executes a command simlar to do_cmd(), but expects the
307 * input and output descriptors to be setup by a previous call to do_cmd().
308 * This way the input and output of two commands can be connected.
311 do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout)
318 "Executing: 2nd program %s host %s, user %s, command %s\n",
320 remuser ? remuser : "(unspecified)", cmd);
322 /* Fork a child to execute the command on the remote host using ssh. */
328 replacearg(&args, 0, "%s", ssh_program);
329 if (remuser != NULL) {
330 addargs(&args, "-l");
331 addargs(&args, "%s", remuser);
333 addargs(&args, "--");
334 addargs(&args, "%s", host);
335 addargs(&args, "%s", cmd);
337 execvp(ssh_program, args.list);
340 } else if (pid == -1) {
341 fatal("fork: %s", strerror(errno));
343 while (waitpid(pid, &status, 0) == -1)
345 fatal("do_cmd2: waitpid: %s", strerror(errno));
354 BUF *allocbuf(BUF *, int, int);
357 void run_err(const char *,...);
358 void verifydir(char *);
362 int errs, remin, remout;
363 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
366 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
369 void rsource(char *, struct stat *);
370 void sink(int, char *[]);
371 void source(int, char *[]);
372 void tolocal(int, char *[]);
373 void toremote(char *, int, char *[]);
377 main(int argc, char **argv)
379 int ch, fflag, tflag, status, n;
380 char *targ, **newargv;
385 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
388 /* Copy argv, because we modify it */
389 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
390 for (n = 0; n < argc; n++)
391 newargv[n] = xstrdup(argv[n]);
394 __progname = ssh_get_progname(argv[0]);
396 memset(&args, '\0', sizeof(args));
397 memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
398 args.list = remote_remote_args.list = NULL;
399 addargs(&args, "%s", ssh_program);
400 addargs(&args, "-x");
401 addargs(&args, "-oForwardAgent=no");
402 addargs(&args, "-oPermitLocalCommand=no");
403 addargs(&args, "-oClearAllForwardings=yes");
406 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
408 /* User-visible flags. */
414 addargs(&args, "-%c", ch);
415 addargs(&remote_remote_args, "-%c", ch);
424 addargs(&remote_remote_args, "-%c", ch);
425 addargs(&remote_remote_args, "%s", optarg);
426 addargs(&args, "-%c", ch);
427 addargs(&args, "%s", optarg);
430 addargs(&remote_remote_args, "-p");
431 addargs(&remote_remote_args, "%s", optarg);
432 addargs(&args, "-p");
433 addargs(&args, "%s", optarg);
436 addargs(&remote_remote_args, "-oBatchmode=yes");
437 addargs(&args, "-oBatchmode=yes");
440 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
444 limit_kbps *= 1024; /* kbps */
445 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
454 ssh_program = xstrdup(optarg);
457 addargs(&args, "-v");
458 addargs(&remote_remote_args, "-v");
462 addargs(&args, "-q");
463 addargs(&remote_remote_args, "-q");
467 /* Server options. */
469 targetshouldbedirectory = 1;
471 case 'f': /* "from" */
479 setmode(0, O_BINARY);
488 if ((pwd = getpwuid(userid = getuid())) == NULL)
489 fatal("unknown user %u", (u_int) userid);
491 if (!isatty(STDOUT_FILENO))
494 remin = STDIN_FILENO;
495 remout = STDOUT_FILENO;
498 /* Follow "protocol", send data. */
511 targetshouldbedirectory = 1;
515 /* Command to be executed on remote system using "ssh". */
516 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
517 verbose_mode ? " -v" : "",
518 iamrecursive ? " -r" : "", pflag ? " -p" : "",
519 targetshouldbedirectory ? " -d" : "");
521 (void) signal(SIGPIPE, lostconn);
523 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
524 toremote(targ, argc, argv);
526 if (targetshouldbedirectory)
527 verifydir(argv[argc - 1]);
528 tolocal(argc, argv); /* Dest is local host. */
531 * Finally check the exit status of the ssh process, if one was forked
532 * and no error has occurred yet
534 if (do_cmd_pid != -1 && errs == 0) {
538 (void) close(remout);
539 if (waitpid(do_cmd_pid, &status, 0) == -1)
542 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
549 /* Callback from atomicio6 to update progress meter and limit bandwidth */
551 scpio(void *_cnt, size_t s)
553 off_t *cnt = (off_t *)_cnt;
557 bandwidth_limit(&bwlimit, s);
562 toremote(char *targ, int argc, char **argv)
564 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
569 memset(&alist, '\0', sizeof(alist));
576 arg = xstrdup(argv[argc - 1]);
577 if ((thost = strrchr(arg, '@'))) {
588 if (tuser != NULL && !okname(tuser)) {
593 for (i = 0; i < argc - 1; i++) {
594 src = colon(argv[i]);
595 if (src && throughlocal) { /* extended remote to remote */
599 host = strrchr(argv[i], '@');
602 host = cleanhostname(host);
605 suser = pwd->pw_name;
606 else if (!okname(suser))
609 host = cleanhostname(argv[i]);
612 xasprintf(&bp, "%s -f -- %s", cmd, src);
613 if (do_cmd(host, suser, bp, &remin, &remout) < 0)
616 host = cleanhostname(thost);
617 xasprintf(&bp, "%s -t -- %s", cmd, targ);
618 if (do_cmd2(host, tuser, bp, remin, remout) < 0)
622 (void) close(remout);
624 } else if (src) { /* standard remote to remote */
626 addargs(&alist, "%s", ssh_program);
627 addargs(&alist, "-x");
628 addargs(&alist, "-oClearAllForwardings=yes");
629 addargs(&alist, "-n");
630 for (j = 0; j < remote_remote_args.num; j++) {
631 addargs(&alist, "%s",
632 remote_remote_args.list[j]);
637 host = strrchr(argv[i], '@');
641 host = cleanhostname(host);
644 suser = pwd->pw_name;
645 else if (!okname(suser))
647 addargs(&alist, "-l");
648 addargs(&alist, "%s", suser);
650 host = cleanhostname(argv[i]);
652 addargs(&alist, "--");
653 addargs(&alist, "%s", host);
654 addargs(&alist, "%s", cmd);
655 addargs(&alist, "%s", src);
656 addargs(&alist, "%s%s%s:%s",
657 tuser ? tuser : "", tuser ? "@" : "",
659 if (do_local_cmd(&alist) != 0)
661 } else { /* local to remote */
663 xasprintf(&bp, "%s -t -- %s", cmd, targ);
664 host = cleanhostname(thost);
665 if (do_cmd(host, tuser, bp, &remin,
679 tolocal(int argc, char **argv)
681 char *bp, *host, *src, *suser;
685 memset(&alist, '\0', sizeof(alist));
688 for (i = 0; i < argc - 1; i++) {
689 if (!(src = colon(argv[i]))) { /* Local to local. */
691 addargs(&alist, "%s", _PATH_CP);
693 addargs(&alist, "-r");
695 addargs(&alist, "-p");
696 addargs(&alist, "--");
697 addargs(&alist, "%s", argv[i]);
698 addargs(&alist, "%s", argv[argc-1]);
699 if (do_local_cmd(&alist))
706 if ((host = strrchr(argv[i], '@')) == NULL) {
713 suser = pwd->pw_name;
715 host = cleanhostname(host);
716 xasprintf(&bp, "%s -f -- %s", cmd, src);
717 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
723 sink(1, argv + argc - 1);
730 source(int argc, char **argv)
737 int fd = -1, haderr, indx;
738 char *last, *name, buf[2048], encname[MAXPATHLEN];
741 for (indx = 0; indx < argc; ++indx) {
745 while (len > 1 && name[len-1] == '/')
747 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
749 if (strchr(name, '\n') != NULL) {
750 strnvis(encname, name, sizeof(encname), VIS_NL);
753 if (fstat(fd, &stb) < 0) {
754 syserr: run_err("%s: %s", name, strerror(errno));
757 if (stb.st_size < 0) {
758 run_err("%s: %s", name, "Negative file size");
762 switch (stb.st_mode & S_IFMT) {
772 run_err("%s: not a regular file", name);
775 if ((last = strrchr(name, '/')) == NULL)
782 * Make it compatible with possible future
783 * versions expecting microseconds.
785 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
786 (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
787 (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
789 fprintf(stderr, "File mtime %ld atime %ld\n",
790 (long)stb.st_mtime, (long)stb.st_atime);
791 fprintf(stderr, "Sending file timestamps: %s",
794 (void) atomicio(vwrite, remout, buf, strlen(buf));
798 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
799 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
800 (u_int) (stb.st_mode & FILEMODEMASK),
801 (long long)stb.st_size, last);
803 fprintf(stderr, "Sending file modes: %s", buf);
805 (void) atomicio(vwrite, remout, buf, strlen(buf));
808 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
809 next: if (fd != -1) {
816 start_progress_meter(curfile, stb.st_size, &statbytes);
817 set_nonblock(remout);
818 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
820 if (i + (off_t)amt > stb.st_size)
821 amt = stb.st_size - i;
823 if (atomicio(read, fd, bp->buf, amt) != amt)
826 /* Keep writing after error to retain sync */
828 (void)atomicio(vwrite, remout, bp->buf, amt);
831 if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
835 unset_nonblock(remout);
837 stop_progress_meter();
840 if (close(fd) < 0 && !haderr)
845 (void) atomicio(vwrite, remout, "", 1);
847 run_err("%s: %s", name, strerror(haderr));
853 rsource(char *name, struct stat *statp)
857 char *last, *vect[1], path[1100];
859 if (!(dirp = opendir(name))) {
860 run_err("%s: %s", name, strerror(errno));
863 last = strrchr(name, '/');
869 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
870 (u_long) statp->st_mtime,
871 (u_long) statp->st_atime);
872 (void) atomicio(vwrite, remout, path, strlen(path));
873 if (response() < 0) {
878 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
879 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
881 fprintf(stderr, "Entering directory: %s", path);
882 (void) atomicio(vwrite, remout, path, strlen(path));
883 if (response() < 0) {
887 while ((dp = readdir(dirp)) != NULL) {
890 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
892 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
893 run_err("%s/%s: name too long", name, dp->d_name);
896 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
900 (void) closedir(dirp);
901 (void) atomicio(vwrite, remout, "E\n", 2);
906 sink(int argc, char **argv)
916 int amt, exists, first, ofd;
917 mode_t mode, omode, mask;
918 off_t size, statbytes;
919 int setimes, targisdir, wrerrno = 0;
920 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
921 struct timeval tv[2];
925 #define SCREWUP(str) { why = str; goto screwup; }
927 setimes = targisdir = 0;
932 run_err("ambiguous target");
936 if (targetshouldbedirectory)
939 (void) atomicio(vwrite, remout, "", 1);
940 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
942 for (first = 1;; first = 0) {
944 if (atomicio(read, remin, cp, 1) != 1)
947 SCREWUP("unexpected <newline>");
949 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
950 SCREWUP("lost connection");
952 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
955 fprintf(stderr, "Sink: %s", buf);
957 if (buf[0] == '\01' || buf[0] == '\02') {
959 (void) atomicio(vwrite, STDERR_FILENO,
960 buf + 1, strlen(buf + 1));
967 (void) atomicio(vwrite, remout, "", 1);
977 mtime.tv_sec = strtol(cp, &cp, 10);
978 if (!cp || *cp++ != ' ')
979 SCREWUP("mtime.sec not delimited");
980 mtime.tv_usec = strtol(cp, &cp, 10);
981 if (!cp || *cp++ != ' ')
982 SCREWUP("mtime.usec not delimited");
983 atime.tv_sec = strtol(cp, &cp, 10);
984 if (!cp || *cp++ != ' ')
985 SCREWUP("atime.sec not delimited");
986 atime.tv_usec = strtol(cp, &cp, 10);
987 if (!cp || *cp++ != '\0')
988 SCREWUP("atime.usec not delimited");
989 (void) atomicio(vwrite, remout, "", 1);
992 if (*cp != 'C' && *cp != 'D') {
994 * Check for the case "rcp remote:foo\* local:bar".
995 * In this case, the line "No match." can be returned
996 * by the shell before the rcp command on the remote is
997 * executed so the ^Aerror_message convention isn't
1004 SCREWUP("expected control record");
1007 for (++cp; cp < buf + 5; cp++) {
1008 if (*cp < '0' || *cp > '7')
1009 SCREWUP("bad mode");
1010 mode = (mode << 3) | (*cp - '0');
1013 SCREWUP("mode not delimited");
1015 for (size = 0; isdigit(*cp);)
1016 size = size * 10 + (*cp++ - '0');
1018 SCREWUP("size not delimited");
1019 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1020 run_err("error: unexpected filename: %s", cp);
1024 static char *namebuf;
1025 static size_t cursize;
1028 need = strlen(targ) + strlen(cp) + 250;
1029 if (need > cursize) {
1032 namebuf = xmalloc(need);
1035 (void) snprintf(namebuf, need, "%s%s%s", targ,
1036 strcmp(targ, "/") ? "/" : "", cp);
1041 exists = stat(np, &stb) == 0;
1042 if (buf[0] == 'D') {
1043 int mod_flag = pflag;
1045 SCREWUP("received directory without -r");
1047 if (!S_ISDIR(stb.st_mode)) {
1052 (void) chmod(np, mode);
1054 /* Handle copying from a read-only
1057 if (mkdir(np, mode | S_IRWXU) < 0)
1060 vect[0] = xstrdup(np);
1064 if (utimes(vect[0], tv) < 0)
1065 run_err("%s: set times: %s",
1066 vect[0], strerror(errno));
1069 (void) chmod(vect[0], mode);
1076 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1077 bad: run_err("%s: %s", np, strerror(errno));
1080 (void) atomicio(vwrite, remout, "", 1);
1081 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1090 start_progress_meter(curfile, size, &statbytes);
1091 set_nonblock(remin);
1092 for (count = i = 0; i < size; i += bp->cnt) {
1098 j = atomicio6(read, remin, cp, amt,
1101 run_err("%s", j != EPIPE ?
1103 "dropped connection");
1110 if (count == bp->cnt) {
1111 /* Keep reading so we stay sync'd up. */
1113 if (atomicio(vwrite, ofd, bp->buf,
1123 unset_nonblock(remin);
1125 stop_progress_meter();
1126 if (count != 0 && wrerr == NO &&
1127 atomicio(vwrite, ofd, bp->buf, count) != count) {
1131 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1132 ftruncate(ofd, size) != 0) {
1133 run_err("%s: truncate: %s", np, strerror(errno));
1137 if (exists || omode != mode)
1139 if (fchmod(ofd, omode)) {
1140 #else /* HAVE_FCHMOD */
1141 if (chmod(np, omode)) {
1142 #endif /* HAVE_FCHMOD */
1143 run_err("%s: set mode: %s",
1144 np, strerror(errno));
1148 if (!exists && omode != mode)
1150 if (fchmod(ofd, omode & ~mask)) {
1151 #else /* HAVE_FCHMOD */
1152 if (chmod(np, omode & ~mask)) {
1153 #endif /* HAVE_FCHMOD */
1154 run_err("%s: set mode: %s",
1155 np, strerror(errno));
1159 if (close(ofd) == -1) {
1164 if (setimes && wrerr == NO) {
1166 if (utimes(np, tv) < 0) {
1167 run_err("%s: set times: %s",
1168 np, strerror(errno));
1174 run_err("%s: %s", np, strerror(wrerrno));
1177 (void) atomicio(vwrite, remout, "", 1);
1184 run_err("protocol error: %s", why);
1191 char ch, *cp, resp, rbuf[2048];
1193 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1203 case 1: /* error, followed by error msg */
1204 case 2: /* fatal error, "" */
1206 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1209 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1212 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1224 (void) fprintf(stderr,
1225 "usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1226 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1227 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1232 run_err(const char *fmt,...)
1238 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1239 (void) fprintf(fp, "%c", 0x01);
1240 (void) fprintf(fp, "scp: ");
1242 (void) vfprintf(fp, fmt, ap);
1244 (void) fprintf(fp, "\n");
1250 vfprintf(stderr, fmt, ap);
1252 fprintf(stderr, "\n");
1261 if (!stat(cp, &stb)) {
1262 if (S_ISDIR(stb.st_mode))
1266 run_err("%s: %s", cp, strerror(errno));
1281 if (!isalpha(c) && !isdigit(c)) {
1296 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1301 allocbuf(BUF *bp, int fd, int blksize)
1304 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1307 if (fstat(fd, &stb) < 0) {
1308 run_err("fstat: %s", strerror(errno));
1311 size = roundup(stb.st_blksize, blksize);
1314 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1316 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1317 if (bp->cnt >= size)
1319 if (bp->buf == NULL)
1320 bp->buf = xmalloc(size);
1322 bp->buf = xrealloc(bp->buf, 1, size);
1323 memset(bp->buf, 0, size);
1332 write(STDERR_FILENO, "lost connection\n", 16);