1 /* $OpenBSD: scp.c,v 1.184 2015/11/27 00:49:31 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 #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>
107 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
112 #include "atomicio.h"
113 #include "pathnames.h"
116 #include "progressmeter.h"
118 extern char *__progname;
120 #define COPY_BUFLEN 16384
122 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
123 int do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout);
125 /* Struct for addargs */
127 arglist remote_remote_args;
129 /* Bandwidth limit */
130 long long limit_kbps = 0;
131 struct bwlimit bwlimit;
133 /* Name of current file being transferred. */
136 /* This is set to non-zero to enable verbose mode. */
137 int verbose_mode = 0;
139 /* This is set to zero if the progressmeter is not desired. */
140 int showprogress = 1;
143 * This is set to non-zero if remote-remote copy should be piped
144 * through this process.
146 int throughlocal = 0;
148 /* This is the program to execute for the secured connection. ("ssh" or -S) */
149 char *ssh_program = _PATH_SSH_PROGRAM;
151 /* This is used to store the pid of ssh_program */
152 pid_t do_cmd_pid = -1;
157 if (do_cmd_pid > 1) {
158 kill(do_cmd_pid, signo ? signo : SIGTERM);
159 waitpid(do_cmd_pid, NULL, 0);
172 if (do_cmd_pid > 1) {
173 kill(do_cmd_pid, signo);
174 while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
177 kill(getpid(), SIGSTOP);
182 do_local_cmd(arglist *a)
189 fatal("do_local_cmd: no arguments");
192 fprintf(stderr, "Executing:");
193 for (i = 0; i < a->num; i++)
194 fprintf(stderr, " %s", a->list[i]);
195 fprintf(stderr, "\n");
197 if ((pid = fork()) == -1)
198 fatal("do_local_cmd: fork: %s", strerror(errno));
201 execvp(a->list[0], a->list);
207 signal(SIGTERM, killchild);
208 signal(SIGINT, killchild);
209 signal(SIGHUP, killchild);
211 while (waitpid(pid, &status, 0) == -1)
213 fatal("do_local_cmd: waitpid: %s", strerror(errno));
217 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
224 * This function executes the given command as the specified user on the
225 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
226 * assigns the input and output file descriptors on success.
230 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
232 int pin[2], pout[2], reserved[2];
236 "Executing: program %s host %s, user %s, command %s\n",
238 remuser ? remuser : "(unspecified)", cmd);
241 * Reserve two descriptors so that the real pipes won't get
242 * descriptors 0 and 1 because that will screw up dup2 below.
244 if (pipe(reserved) < 0)
245 fatal("pipe: %s", strerror(errno));
247 /* Create a socket pair for communicating with ssh. */
249 fatal("pipe: %s", strerror(errno));
251 fatal("pipe: %s", strerror(errno));
253 /* Free the reserved descriptors. */
257 signal(SIGTSTP, suspchild);
258 signal(SIGTTIN, suspchild);
259 signal(SIGTTOU, suspchild);
261 /* Fork a child to execute the command on the remote host using ssh. */
263 if (do_cmd_pid == 0) {
272 replacearg(&args, 0, "%s", ssh_program);
273 if (remuser != NULL) {
274 addargs(&args, "-l");
275 addargs(&args, "%s", remuser);
277 addargs(&args, "--");
278 addargs(&args, "%s", host);
279 addargs(&args, "%s", cmd);
281 execvp(ssh_program, args.list);
284 } else if (do_cmd_pid == -1) {
285 fatal("fork: %s", strerror(errno));
287 /* Parent. Close the other side, and return the local side. */
292 signal(SIGTERM, killchild);
293 signal(SIGINT, killchild);
294 signal(SIGHUP, killchild);
299 * This functions executes a command simlar to do_cmd(), but expects the
300 * input and output descriptors to be setup by a previous call to do_cmd().
301 * This way the input and output of two commands can be connected.
304 do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout)
311 "Executing: 2nd program %s host %s, user %s, command %s\n",
313 remuser ? remuser : "(unspecified)", cmd);
315 /* Fork a child to execute the command on the remote host using ssh. */
321 replacearg(&args, 0, "%s", ssh_program);
322 if (remuser != NULL) {
323 addargs(&args, "-l");
324 addargs(&args, "%s", remuser);
326 addargs(&args, "--");
327 addargs(&args, "%s", host);
328 addargs(&args, "%s", cmd);
330 execvp(ssh_program, args.list);
333 } else if (pid == -1) {
334 fatal("fork: %s", strerror(errno));
336 while (waitpid(pid, &status, 0) == -1)
338 fatal("do_cmd2: waitpid: %s", strerror(errno));
347 BUF *allocbuf(BUF *, int, int);
350 void run_err(const char *,...);
351 void verifydir(char *);
355 int errs, remin, remout;
356 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
359 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
362 void rsource(char *, struct stat *);
363 void sink(int, char *[]);
364 void source(int, char *[]);
365 void tolocal(int, char *[]);
366 void toremote(char *, int, char *[]);
370 main(int argc, char **argv)
372 int ch, fflag, tflag, status, n;
373 char *targ, **newargv;
378 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
381 /* Copy argv, because we modify it */
382 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
383 for (n = 0; n < argc; n++)
384 newargv[n] = xstrdup(argv[n]);
387 __progname = ssh_get_progname(argv[0]);
389 memset(&args, '\0', sizeof(args));
390 memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
391 args.list = remote_remote_args.list = NULL;
392 addargs(&args, "%s", ssh_program);
393 addargs(&args, "-x");
394 addargs(&args, "-oForwardAgent=no");
395 addargs(&args, "-oPermitLocalCommand=no");
396 addargs(&args, "-oClearAllForwardings=yes");
399 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
401 /* User-visible flags. */
407 addargs(&args, "-%c", ch);
408 addargs(&remote_remote_args, "-%c", ch);
417 addargs(&remote_remote_args, "-%c", ch);
418 addargs(&remote_remote_args, "%s", optarg);
419 addargs(&args, "-%c", ch);
420 addargs(&args, "%s", optarg);
423 addargs(&remote_remote_args, "-p");
424 addargs(&remote_remote_args, "%s", optarg);
425 addargs(&args, "-p");
426 addargs(&args, "%s", optarg);
429 addargs(&remote_remote_args, "-oBatchmode=yes");
430 addargs(&args, "-oBatchmode=yes");
433 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
437 limit_kbps *= 1024; /* kbps */
438 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
447 ssh_program = xstrdup(optarg);
450 addargs(&args, "-v");
451 addargs(&remote_remote_args, "-v");
455 addargs(&args, "-q");
456 addargs(&remote_remote_args, "-q");
460 /* Server options. */
462 targetshouldbedirectory = 1;
464 case 'f': /* "from" */
472 setmode(0, O_BINARY);
481 if ((pwd = getpwuid(userid = getuid())) == NULL)
482 fatal("unknown user %u", (u_int) userid);
484 if (!isatty(STDOUT_FILENO))
488 /* Cannot pledge: -p allows setuid/setgid files... */
490 if (pledge("stdio rpath wpath cpath fattr tty proc exec",
497 remin = STDIN_FILENO;
498 remout = STDOUT_FILENO;
501 /* Follow "protocol", send data. */
514 targetshouldbedirectory = 1;
518 /* Command to be executed on remote system using "ssh". */
519 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
520 verbose_mode ? " -v" : "",
521 iamrecursive ? " -r" : "", pflag ? " -p" : "",
522 targetshouldbedirectory ? " -d" : "");
524 (void) signal(SIGPIPE, lostconn);
526 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
527 toremote(targ, argc, argv);
529 if (targetshouldbedirectory)
530 verifydir(argv[argc - 1]);
531 tolocal(argc, argv); /* Dest is local host. */
534 * Finally check the exit status of the ssh process, if one was forked
535 * and no error has occurred yet
537 if (do_cmd_pid != -1 && errs == 0) {
541 (void) close(remout);
542 if (waitpid(do_cmd_pid, &status, 0) == -1)
545 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
552 /* Callback from atomicio6 to update progress meter and limit bandwidth */
554 scpio(void *_cnt, size_t s)
556 off_t *cnt = (off_t *)_cnt;
560 bandwidth_limit(&bwlimit, s);
565 do_times(int fd, int verb, const struct stat *sb)
567 /* strlen(2^64) == 20; strlen(10^6) == 7 */
568 char buf[(20 + 7 + 2) * 2 + 2];
570 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
571 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
572 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
574 fprintf(stderr, "File mtime %lld atime %lld\n",
575 (long long)sb->st_mtime, (long long)sb->st_atime);
576 fprintf(stderr, "Sending file timestamps: %s", buf);
578 (void) atomicio(vwrite, fd, buf, strlen(buf));
583 toremote(char *targ, int argc, char **argv)
585 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
590 memset(&alist, '\0', sizeof(alist));
597 arg = xstrdup(argv[argc - 1]);
598 if ((thost = strrchr(arg, '@'))) {
609 if (tuser != NULL && !okname(tuser)) {
614 for (i = 0; i < argc - 1; i++) {
615 src = colon(argv[i]);
616 if (src && throughlocal) { /* extended remote to remote */
620 host = strrchr(argv[i], '@');
623 host = cleanhostname(host);
626 suser = pwd->pw_name;
627 else if (!okname(suser))
630 host = cleanhostname(argv[i]);
633 xasprintf(&bp, "%s -f %s%s", cmd,
634 *src == '-' ? "-- " : "", src);
635 if (do_cmd(host, suser, bp, &remin, &remout) < 0)
638 host = cleanhostname(thost);
639 xasprintf(&bp, "%s -t %s%s", cmd,
640 *targ == '-' ? "-- " : "", targ);
641 if (do_cmd2(host, tuser, bp, remin, remout) < 0)
645 (void) close(remout);
647 } else if (src) { /* standard remote to remote */
649 addargs(&alist, "%s", ssh_program);
650 addargs(&alist, "-x");
651 addargs(&alist, "-oClearAllForwardings=yes");
652 addargs(&alist, "-n");
653 for (j = 0; j < remote_remote_args.num; j++) {
654 addargs(&alist, "%s",
655 remote_remote_args.list[j]);
660 host = strrchr(argv[i], '@');
664 host = cleanhostname(host);
667 suser = pwd->pw_name;
668 else if (!okname(suser))
670 addargs(&alist, "-l");
671 addargs(&alist, "%s", suser);
673 host = cleanhostname(argv[i]);
675 addargs(&alist, "--");
676 addargs(&alist, "%s", host);
677 addargs(&alist, "%s", cmd);
678 addargs(&alist, "%s", src);
679 addargs(&alist, "%s%s%s:%s",
680 tuser ? tuser : "", tuser ? "@" : "",
682 if (do_local_cmd(&alist) != 0)
684 } else { /* local to remote */
686 xasprintf(&bp, "%s -t %s%s", cmd,
687 *targ == '-' ? "-- " : "", targ);
688 host = cleanhostname(thost);
689 if (do_cmd(host, tuser, bp, &remin,
703 tolocal(int argc, char **argv)
705 char *bp, *host, *src, *suser;
709 memset(&alist, '\0', sizeof(alist));
712 for (i = 0; i < argc - 1; i++) {
713 if (!(src = colon(argv[i]))) { /* Local to local. */
715 addargs(&alist, "%s", _PATH_CP);
717 addargs(&alist, "-r");
719 addargs(&alist, "-p");
720 addargs(&alist, "--");
721 addargs(&alist, "%s", argv[i]);
722 addargs(&alist, "%s", argv[argc-1]);
723 if (do_local_cmd(&alist))
730 if ((host = strrchr(argv[i], '@')) == NULL) {
737 suser = pwd->pw_name;
739 host = cleanhostname(host);
740 xasprintf(&bp, "%s -f %s%s",
741 cmd, *src == '-' ? "-- " : "", src);
742 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
748 sink(1, argv + argc - 1);
755 source(int argc, char **argv)
762 int fd = -1, haderr, indx;
763 char *last, *name, buf[2048], encname[PATH_MAX];
766 for (indx = 0; indx < argc; ++indx) {
770 while (len > 1 && name[len-1] == '/')
772 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
774 if (strchr(name, '\n') != NULL) {
775 strnvis(encname, name, sizeof(encname), VIS_NL);
778 if (fstat(fd, &stb) < 0) {
779 syserr: run_err("%s: %s", name, strerror(errno));
782 if (stb.st_size < 0) {
783 run_err("%s: %s", name, "Negative file size");
787 switch (stb.st_mode & S_IFMT) {
797 run_err("%s: not a regular file", name);
800 if ((last = strrchr(name, '/')) == NULL)
806 if (do_times(remout, verbose_mode, &stb) < 0)
809 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
810 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
811 (u_int) (stb.st_mode & FILEMODEMASK),
812 (long long)stb.st_size, last);
814 fprintf(stderr, "Sending file modes: %s", buf);
816 (void) atomicio(vwrite, remout, buf, strlen(buf));
819 if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
820 next: if (fd != -1) {
827 start_progress_meter(curfile, stb.st_size, &statbytes);
828 set_nonblock(remout);
829 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
831 if (i + (off_t)amt > stb.st_size)
832 amt = stb.st_size - i;
834 if ((nr = atomicio(read, fd,
835 bp->buf, amt)) != amt) {
837 memset(bp->buf + nr, 0, amt - nr);
840 /* Keep writing after error to retain sync */
842 (void)atomicio(vwrite, remout, bp->buf, amt);
843 memset(bp->buf, 0, amt);
846 if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
850 unset_nonblock(remout);
852 stop_progress_meter();
855 if (close(fd) < 0 && !haderr)
860 (void) atomicio(vwrite, remout, "", 1);
862 run_err("%s: %s", name, strerror(haderr));
868 rsource(char *name, struct stat *statp)
872 char *last, *vect[1], path[PATH_MAX];
874 if (!(dirp = opendir(name))) {
875 run_err("%s: %s", name, strerror(errno));
878 last = strrchr(name, '/');
884 if (do_times(remout, verbose_mode, statp) < 0) {
889 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
890 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
892 fprintf(stderr, "Entering directory: %s", path);
893 (void) atomicio(vwrite, remout, path, strlen(path));
894 if (response() < 0) {
898 while ((dp = readdir(dirp)) != NULL) {
901 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
903 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
904 run_err("%s/%s: name too long", name, dp->d_name);
907 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
911 (void) closedir(dirp);
912 (void) atomicio(vwrite, remout, "E\n", 2);
917 sink(int argc, char **argv)
927 int amt, exists, first, ofd;
928 mode_t mode, omode, mask;
929 off_t size, statbytes;
930 unsigned long long ull;
931 int setimes, targisdir, wrerrno = 0;
932 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
933 struct timeval tv[2];
937 #define SCREWUP(str) { why = str; goto screwup; }
939 setimes = targisdir = 0;
944 run_err("ambiguous target");
948 if (targetshouldbedirectory)
951 (void) atomicio(vwrite, remout, "", 1);
952 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
954 for (first = 1;; first = 0) {
956 if (atomicio(read, remin, cp, 1) != 1)
959 SCREWUP("unexpected <newline>");
961 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
962 SCREWUP("lost connection");
964 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
967 fprintf(stderr, "Sink: %s", buf);
969 if (buf[0] == '\01' || buf[0] == '\02') {
971 (void) atomicio(vwrite, STDERR_FILENO,
972 buf + 1, strlen(buf + 1));
979 (void) atomicio(vwrite, remout, "", 1);
989 if (!isdigit((unsigned char)*cp))
990 SCREWUP("mtime.sec not present");
991 ull = strtoull(cp, &cp, 10);
992 if (!cp || *cp++ != ' ')
993 SCREWUP("mtime.sec not delimited");
994 if ((time_t)ull < 0 ||
995 (unsigned long long)(time_t)ull != ull)
996 setimes = 0; /* out of range */
998 mtime.tv_usec = strtol(cp, &cp, 10);
999 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1000 mtime.tv_usec > 999999)
1001 SCREWUP("mtime.usec not delimited");
1002 if (!isdigit((unsigned char)*cp))
1003 SCREWUP("atime.sec not present");
1004 ull = strtoull(cp, &cp, 10);
1005 if (!cp || *cp++ != ' ')
1006 SCREWUP("atime.sec not delimited");
1007 if ((time_t)ull < 0 ||
1008 (unsigned long long)(time_t)ull != ull)
1009 setimes = 0; /* out of range */
1011 atime.tv_usec = strtol(cp, &cp, 10);
1012 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1013 atime.tv_usec > 999999)
1014 SCREWUP("atime.usec not delimited");
1015 (void) atomicio(vwrite, remout, "", 1);
1018 if (*cp != 'C' && *cp != 'D') {
1020 * Check for the case "rcp remote:foo\* local:bar".
1021 * In this case, the line "No match." can be returned
1022 * by the shell before the rcp command on the remote is
1023 * executed so the ^Aerror_message convention isn't
1030 SCREWUP("expected control record");
1033 for (++cp; cp < buf + 5; cp++) {
1034 if (*cp < '0' || *cp > '7')
1035 SCREWUP("bad mode");
1036 mode = (mode << 3) | (*cp - '0');
1039 SCREWUP("mode not delimited");
1041 for (size = 0; isdigit((unsigned char)*cp);)
1042 size = size * 10 + (*cp++ - '0');
1044 SCREWUP("size not delimited");
1045 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1046 run_err("error: unexpected filename: %s", cp);
1050 static char *namebuf;
1051 static size_t cursize;
1054 need = strlen(targ) + strlen(cp) + 250;
1055 if (need > cursize) {
1057 namebuf = xmalloc(need);
1060 (void) snprintf(namebuf, need, "%s%s%s", targ,
1061 strcmp(targ, "/") ? "/" : "", cp);
1066 exists = stat(np, &stb) == 0;
1067 if (buf[0] == 'D') {
1068 int mod_flag = pflag;
1070 SCREWUP("received directory without -r");
1072 if (!S_ISDIR(stb.st_mode)) {
1077 (void) chmod(np, mode);
1079 /* Handle copying from a read-only
1082 if (mkdir(np, mode | S_IRWXU) < 0)
1085 vect[0] = xstrdup(np);
1089 if (utimes(vect[0], tv) < 0)
1090 run_err("%s: set times: %s",
1091 vect[0], strerror(errno));
1094 (void) chmod(vect[0], mode);
1100 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1101 bad: run_err("%s: %s", np, strerror(errno));
1104 (void) atomicio(vwrite, remout, "", 1);
1105 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1114 start_progress_meter(curfile, size, &statbytes);
1115 set_nonblock(remin);
1116 for (count = i = 0; i < size; i += bp->cnt) {
1122 j = atomicio6(read, remin, cp, amt,
1125 run_err("%s", j != EPIPE ?
1127 "dropped connection");
1134 if (count == bp->cnt) {
1135 /* Keep reading so we stay sync'd up. */
1137 if (atomicio(vwrite, ofd, bp->buf,
1147 unset_nonblock(remin);
1149 stop_progress_meter();
1150 if (count != 0 && wrerr == NO &&
1151 atomicio(vwrite, ofd, bp->buf, count) != count) {
1155 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1156 ftruncate(ofd, size) != 0) {
1157 run_err("%s: truncate: %s", np, strerror(errno));
1161 if (exists || omode != mode)
1163 if (fchmod(ofd, omode)) {
1164 #else /* HAVE_FCHMOD */
1165 if (chmod(np, omode)) {
1166 #endif /* HAVE_FCHMOD */
1167 run_err("%s: set mode: %s",
1168 np, strerror(errno));
1172 if (!exists && omode != mode)
1174 if (fchmod(ofd, omode & ~mask)) {
1175 #else /* HAVE_FCHMOD */
1176 if (chmod(np, omode & ~mask)) {
1177 #endif /* HAVE_FCHMOD */
1178 run_err("%s: set mode: %s",
1179 np, strerror(errno));
1183 if (close(ofd) == -1) {
1188 if (setimes && wrerr == NO) {
1190 if (utimes(np, tv) < 0) {
1191 run_err("%s: set times: %s",
1192 np, strerror(errno));
1198 run_err("%s: %s", np, strerror(wrerrno));
1201 (void) atomicio(vwrite, remout, "", 1);
1208 run_err("protocol error: %s", why);
1215 char ch, *cp, resp, rbuf[2048];
1217 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1227 case 1: /* error, followed by error msg */
1228 case 2: /* fatal error, "" */
1230 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1233 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1236 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1248 (void) fprintf(stderr,
1249 "usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1250 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1251 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1256 run_err(const char *fmt,...)
1262 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1263 (void) fprintf(fp, "%c", 0x01);
1264 (void) fprintf(fp, "scp: ");
1266 (void) vfprintf(fp, fmt, ap);
1268 (void) fprintf(fp, "\n");
1274 vfprintf(stderr, fmt, ap);
1276 fprintf(stderr, "\n");
1285 if (!stat(cp, &stb)) {
1286 if (S_ISDIR(stb.st_mode))
1290 run_err("%s: %s", cp, strerror(errno));
1305 if (!isalpha(c) && !isdigit((unsigned char)c)) {
1320 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1325 allocbuf(BUF *bp, int fd, int blksize)
1328 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1331 if (fstat(fd, &stb) < 0) {
1332 run_err("fstat: %s", strerror(errno));
1335 size = roundup(stb.st_blksize, blksize);
1338 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1340 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1341 if (bp->cnt >= size)
1343 if (bp->buf == NULL)
1344 bp->buf = xmalloc(size);
1346 bp->buf = xreallocarray(bp->buf, 1, size);
1347 memset(bp->buf, 0, size);
1356 (void)write(STDERR_FILENO, "lost connection\n", 16);