1 /* $OpenBSD: scp.c,v 1.179 2013/11/20 20:53:10 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>
106 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
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++)
193 fprintf(stderr, " %s", a->list[i]);
194 fprintf(stderr, "\n");
196 if ((pid = fork()) == -1)
197 fatal("do_local_cmd: fork: %s", strerror(errno));
200 execvp(a->list[0], a->list);
206 signal(SIGTERM, killchild);
207 signal(SIGINT, killchild);
208 signal(SIGHUP, killchild);
210 while (waitpid(pid, &status, 0) == -1)
212 fatal("do_local_cmd: waitpid: %s", strerror(errno));
216 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
223 * This function executes the given command as the specified user on the
224 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
225 * assigns the input and output file descriptors on success.
229 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
231 int pin[2], pout[2], reserved[2];
235 "Executing: program %s host %s, user %s, command %s\n",
237 remuser ? remuser : "(unspecified)", cmd);
240 * Reserve two descriptors so that the real pipes won't get
241 * descriptors 0 and 1 because that will screw up dup2 below.
243 if (pipe(reserved) < 0)
244 fatal("pipe: %s", strerror(errno));
246 /* Create a socket pair for communicating with ssh. */
248 fatal("pipe: %s", strerror(errno));
250 fatal("pipe: %s", strerror(errno));
252 /* Free the reserved descriptors. */
256 signal(SIGTSTP, suspchild);
257 signal(SIGTTIN, suspchild);
258 signal(SIGTTOU, suspchild);
260 /* Fork a child to execute the command on the remote host using ssh. */
262 if (do_cmd_pid == 0) {
271 replacearg(&args, 0, "%s", ssh_program);
272 if (remuser != NULL) {
273 addargs(&args, "-l");
274 addargs(&args, "%s", remuser);
276 addargs(&args, "--");
277 addargs(&args, "%s", host);
278 addargs(&args, "%s", cmd);
280 execvp(ssh_program, args.list);
283 } else if (do_cmd_pid == -1) {
284 fatal("fork: %s", strerror(errno));
286 /* Parent. Close the other side, and return the local side. */
291 signal(SIGTERM, killchild);
292 signal(SIGINT, killchild);
293 signal(SIGHUP, killchild);
298 * This functions executes a command simlar to do_cmd(), but expects the
299 * input and output descriptors to be setup by a previous call to do_cmd().
300 * This way the input and output of two commands can be connected.
303 do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout)
310 "Executing: 2nd program %s host %s, user %s, command %s\n",
312 remuser ? remuser : "(unspecified)", cmd);
314 /* Fork a child to execute the command on the remote host using ssh. */
320 replacearg(&args, 0, "%s", ssh_program);
321 if (remuser != NULL) {
322 addargs(&args, "-l");
323 addargs(&args, "%s", remuser);
325 addargs(&args, "--");
326 addargs(&args, "%s", host);
327 addargs(&args, "%s", cmd);
329 execvp(ssh_program, args.list);
332 } else if (pid == -1) {
333 fatal("fork: %s", strerror(errno));
335 while (waitpid(pid, &status, 0) == -1)
337 fatal("do_cmd2: waitpid: %s", strerror(errno));
346 BUF *allocbuf(BUF *, int, int);
349 void run_err(const char *,...);
350 void verifydir(char *);
354 int errs, remin, remout;
355 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
358 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
361 void rsource(char *, struct stat *);
362 void sink(int, char *[]);
363 void source(int, char *[]);
364 void tolocal(int, char *[]);
365 void toremote(char *, int, char *[]);
369 main(int argc, char **argv)
371 int ch, fflag, tflag, status, n;
372 char *targ, **newargv;
377 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
380 /* Copy argv, because we modify it */
381 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
382 for (n = 0; n < argc; n++)
383 newargv[n] = xstrdup(argv[n]);
386 __progname = ssh_get_progname(argv[0]);
388 memset(&args, '\0', sizeof(args));
389 memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
390 args.list = remote_remote_args.list = NULL;
391 addargs(&args, "%s", ssh_program);
392 addargs(&args, "-x");
393 addargs(&args, "-oForwardAgent=no");
394 addargs(&args, "-oPermitLocalCommand=no");
395 addargs(&args, "-oClearAllForwardings=yes");
398 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
400 /* User-visible flags. */
406 addargs(&args, "-%c", ch);
407 addargs(&remote_remote_args, "-%c", ch);
416 addargs(&remote_remote_args, "-%c", ch);
417 addargs(&remote_remote_args, "%s", optarg);
418 addargs(&args, "-%c", ch);
419 addargs(&args, "%s", optarg);
422 addargs(&remote_remote_args, "-p");
423 addargs(&remote_remote_args, "%s", optarg);
424 addargs(&args, "-p");
425 addargs(&args, "%s", optarg);
428 addargs(&remote_remote_args, "-oBatchmode=yes");
429 addargs(&args, "-oBatchmode=yes");
432 limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
436 limit_kbps *= 1024; /* kbps */
437 bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
446 ssh_program = xstrdup(optarg);
449 addargs(&args, "-v");
450 addargs(&remote_remote_args, "-v");
454 addargs(&args, "-q");
455 addargs(&remote_remote_args, "-q");
459 /* Server options. */
461 targetshouldbedirectory = 1;
463 case 'f': /* "from" */
471 setmode(0, O_BINARY);
480 if ((pwd = getpwuid(userid = getuid())) == NULL)
481 fatal("unknown user %u", (u_int) userid);
483 if (!isatty(STDOUT_FILENO))
486 remin = STDIN_FILENO;
487 remout = STDOUT_FILENO;
490 /* Follow "protocol", send data. */
503 targetshouldbedirectory = 1;
507 /* Command to be executed on remote system using "ssh". */
508 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
509 verbose_mode ? " -v" : "",
510 iamrecursive ? " -r" : "", pflag ? " -p" : "",
511 targetshouldbedirectory ? " -d" : "");
513 (void) signal(SIGPIPE, lostconn);
515 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
516 toremote(targ, argc, argv);
518 if (targetshouldbedirectory)
519 verifydir(argv[argc - 1]);
520 tolocal(argc, argv); /* Dest is local host. */
523 * Finally check the exit status of the ssh process, if one was forked
524 * and no error has occurred yet
526 if (do_cmd_pid != -1 && errs == 0) {
530 (void) close(remout);
531 if (waitpid(do_cmd_pid, &status, 0) == -1)
534 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
541 /* Callback from atomicio6 to update progress meter and limit bandwidth */
543 scpio(void *_cnt, size_t s)
545 off_t *cnt = (off_t *)_cnt;
549 bandwidth_limit(&bwlimit, s);
554 do_times(int fd, int verb, const struct stat *sb)
556 /* strlen(2^64) == 20; strlen(10^6) == 7 */
557 char buf[(20 + 7 + 2) * 2 + 2];
559 (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
560 (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
561 (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
563 fprintf(stderr, "File mtime %lld atime %lld\n",
564 (long long)sb->st_mtime, (long long)sb->st_atime);
565 fprintf(stderr, "Sending file timestamps: %s", buf);
567 (void) atomicio(vwrite, fd, buf, strlen(buf));
572 toremote(char *targ, int argc, char **argv)
574 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
579 memset(&alist, '\0', sizeof(alist));
586 arg = xstrdup(argv[argc - 1]);
587 if ((thost = strrchr(arg, '@'))) {
598 if (tuser != NULL && !okname(tuser)) {
603 for (i = 0; i < argc - 1; i++) {
604 src = colon(argv[i]);
605 if (src && throughlocal) { /* extended remote to remote */
609 host = strrchr(argv[i], '@');
612 host = cleanhostname(host);
615 suser = pwd->pw_name;
616 else if (!okname(suser))
619 host = cleanhostname(argv[i]);
622 xasprintf(&bp, "%s -f %s%s", cmd,
623 *src == '-' ? "-- " : "", src);
624 if (do_cmd(host, suser, bp, &remin, &remout) < 0)
627 host = cleanhostname(thost);
628 xasprintf(&bp, "%s -t %s%s", cmd,
629 *targ == '-' ? "-- " : "", targ);
630 if (do_cmd2(host, tuser, bp, remin, remout) < 0)
634 (void) close(remout);
636 } else if (src) { /* standard remote to remote */
638 addargs(&alist, "%s", ssh_program);
639 addargs(&alist, "-x");
640 addargs(&alist, "-oClearAllForwardings=yes");
641 addargs(&alist, "-n");
642 for (j = 0; j < remote_remote_args.num; j++) {
643 addargs(&alist, "%s",
644 remote_remote_args.list[j]);
649 host = strrchr(argv[i], '@');
653 host = cleanhostname(host);
656 suser = pwd->pw_name;
657 else if (!okname(suser))
659 addargs(&alist, "-l");
660 addargs(&alist, "%s", suser);
662 host = cleanhostname(argv[i]);
664 addargs(&alist, "--");
665 addargs(&alist, "%s", host);
666 addargs(&alist, "%s", cmd);
667 addargs(&alist, "%s", src);
668 addargs(&alist, "%s%s%s:%s",
669 tuser ? tuser : "", tuser ? "@" : "",
671 if (do_local_cmd(&alist) != 0)
673 } else { /* local to remote */
675 xasprintf(&bp, "%s -t %s%s", cmd,
676 *targ == '-' ? "-- " : "", targ);
677 host = cleanhostname(thost);
678 if (do_cmd(host, tuser, bp, &remin,
692 tolocal(int argc, char **argv)
694 char *bp, *host, *src, *suser;
698 memset(&alist, '\0', sizeof(alist));
701 for (i = 0; i < argc - 1; i++) {
702 if (!(src = colon(argv[i]))) { /* Local to local. */
704 addargs(&alist, "%s", _PATH_CP);
706 addargs(&alist, "-r");
708 addargs(&alist, "-p");
709 addargs(&alist, "--");
710 addargs(&alist, "%s", argv[i]);
711 addargs(&alist, "%s", argv[argc-1]);
712 if (do_local_cmd(&alist))
719 if ((host = strrchr(argv[i], '@')) == NULL) {
726 suser = pwd->pw_name;
728 host = cleanhostname(host);
729 xasprintf(&bp, "%s -f %s%s",
730 cmd, *src == '-' ? "-- " : "", src);
731 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
737 sink(1, argv + argc - 1);
744 source(int argc, char **argv)
751 int fd = -1, haderr, indx;
752 char *last, *name, buf[2048], encname[MAXPATHLEN];
755 for (indx = 0; indx < argc; ++indx) {
759 while (len > 1 && name[len-1] == '/')
761 if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
763 if (strchr(name, '\n') != NULL) {
764 strnvis(encname, name, sizeof(encname), VIS_NL);
767 if (fstat(fd, &stb) < 0) {
768 syserr: run_err("%s: %s", name, strerror(errno));
771 if (stb.st_size < 0) {
772 run_err("%s: %s", name, "Negative file size");
776 switch (stb.st_mode & S_IFMT) {
786 run_err("%s: not a regular file", name);
789 if ((last = strrchr(name, '/')) == NULL)
795 if (do_times(remout, verbose_mode, &stb) < 0)
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[MAXPATHLEN];
859 if (!(dirp = opendir(name))) {
860 run_err("%s: %s", name, strerror(errno));
863 last = strrchr(name, '/');
869 if (do_times(remout, verbose_mode, statp) < 0) {
874 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
875 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
877 fprintf(stderr, "Entering directory: %s", path);
878 (void) atomicio(vwrite, remout, path, strlen(path));
879 if (response() < 0) {
883 while ((dp = readdir(dirp)) != NULL) {
886 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
888 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
889 run_err("%s/%s: name too long", name, dp->d_name);
892 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
896 (void) closedir(dirp);
897 (void) atomicio(vwrite, remout, "E\n", 2);
902 sink(int argc, char **argv)
912 int amt, exists, first, ofd;
913 mode_t mode, omode, mask;
914 off_t size, statbytes;
915 unsigned long long ull;
916 int setimes, targisdir, wrerrno = 0;
917 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
918 struct timeval tv[2];
922 #define SCREWUP(str) { why = str; goto screwup; }
924 setimes = targisdir = 0;
929 run_err("ambiguous target");
933 if (targetshouldbedirectory)
936 (void) atomicio(vwrite, remout, "", 1);
937 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
939 for (first = 1;; first = 0) {
941 if (atomicio(read, remin, cp, 1) != 1)
944 SCREWUP("unexpected <newline>");
946 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
947 SCREWUP("lost connection");
949 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
952 fprintf(stderr, "Sink: %s", buf);
954 if (buf[0] == '\01' || buf[0] == '\02') {
956 (void) atomicio(vwrite, STDERR_FILENO,
957 buf + 1, strlen(buf + 1));
964 (void) atomicio(vwrite, remout, "", 1);
974 if (!isdigit((unsigned char)*cp))
975 SCREWUP("mtime.sec not present");
976 ull = strtoull(cp, &cp, 10);
977 if (!cp || *cp++ != ' ')
978 SCREWUP("mtime.sec not delimited");
979 if ((time_t)ull < 0 ||
980 (unsigned long long)(time_t)ull != ull)
981 setimes = 0; /* out of range */
983 mtime.tv_usec = strtol(cp, &cp, 10);
984 if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
985 mtime.tv_usec > 999999)
986 SCREWUP("mtime.usec not delimited");
987 if (!isdigit((unsigned char)*cp))
988 SCREWUP("atime.sec not present");
989 ull = strtoull(cp, &cp, 10);
990 if (!cp || *cp++ != ' ')
991 SCREWUP("atime.sec not delimited");
992 if ((time_t)ull < 0 ||
993 (unsigned long long)(time_t)ull != ull)
994 setimes = 0; /* out of range */
996 atime.tv_usec = strtol(cp, &cp, 10);
997 if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
998 atime.tv_usec > 999999)
999 SCREWUP("atime.usec not delimited");
1000 (void) atomicio(vwrite, remout, "", 1);
1003 if (*cp != 'C' && *cp != 'D') {
1005 * Check for the case "rcp remote:foo\* local:bar".
1006 * In this case, the line "No match." can be returned
1007 * by the shell before the rcp command on the remote is
1008 * executed so the ^Aerror_message convention isn't
1015 SCREWUP("expected control record");
1018 for (++cp; cp < buf + 5; cp++) {
1019 if (*cp < '0' || *cp > '7')
1020 SCREWUP("bad mode");
1021 mode = (mode << 3) | (*cp - '0');
1024 SCREWUP("mode not delimited");
1026 for (size = 0; isdigit((unsigned char)*cp);)
1027 size = size * 10 + (*cp++ - '0');
1029 SCREWUP("size not delimited");
1030 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1031 run_err("error: unexpected filename: %s", cp);
1035 static char *namebuf;
1036 static size_t cursize;
1039 need = strlen(targ) + strlen(cp) + 250;
1040 if (need > cursize) {
1042 namebuf = xmalloc(need);
1045 (void) snprintf(namebuf, need, "%s%s%s", targ,
1046 strcmp(targ, "/") ? "/" : "", cp);
1051 exists = stat(np, &stb) == 0;
1052 if (buf[0] == 'D') {
1053 int mod_flag = pflag;
1055 SCREWUP("received directory without -r");
1057 if (!S_ISDIR(stb.st_mode)) {
1062 (void) chmod(np, mode);
1064 /* Handle copying from a read-only
1067 if (mkdir(np, mode | S_IRWXU) < 0)
1070 vect[0] = xstrdup(np);
1074 if (utimes(vect[0], tv) < 0)
1075 run_err("%s: set times: %s",
1076 vect[0], strerror(errno));
1079 (void) chmod(vect[0], mode);
1085 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1086 bad: run_err("%s: %s", np, strerror(errno));
1089 (void) atomicio(vwrite, remout, "", 1);
1090 if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1099 start_progress_meter(curfile, size, &statbytes);
1100 set_nonblock(remin);
1101 for (count = i = 0; i < size; i += bp->cnt) {
1107 j = atomicio6(read, remin, cp, amt,
1110 run_err("%s", j != EPIPE ?
1112 "dropped connection");
1119 if (count == bp->cnt) {
1120 /* Keep reading so we stay sync'd up. */
1122 if (atomicio(vwrite, ofd, bp->buf,
1132 unset_nonblock(remin);
1134 stop_progress_meter();
1135 if (count != 0 && wrerr == NO &&
1136 atomicio(vwrite, ofd, bp->buf, count) != count) {
1140 if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1141 ftruncate(ofd, size) != 0) {
1142 run_err("%s: truncate: %s", np, strerror(errno));
1146 if (exists || omode != mode)
1148 if (fchmod(ofd, omode)) {
1149 #else /* HAVE_FCHMOD */
1150 if (chmod(np, omode)) {
1151 #endif /* HAVE_FCHMOD */
1152 run_err("%s: set mode: %s",
1153 np, strerror(errno));
1157 if (!exists && omode != mode)
1159 if (fchmod(ofd, omode & ~mask)) {
1160 #else /* HAVE_FCHMOD */
1161 if (chmod(np, omode & ~mask)) {
1162 #endif /* HAVE_FCHMOD */
1163 run_err("%s: set mode: %s",
1164 np, strerror(errno));
1168 if (close(ofd) == -1) {
1173 if (setimes && wrerr == NO) {
1175 if (utimes(np, tv) < 0) {
1176 run_err("%s: set times: %s",
1177 np, strerror(errno));
1183 run_err("%s: %s", np, strerror(wrerrno));
1186 (void) atomicio(vwrite, remout, "", 1);
1193 run_err("protocol error: %s", why);
1200 char ch, *cp, resp, rbuf[2048];
1202 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1212 case 1: /* error, followed by error msg */
1213 case 2: /* fatal error, "" */
1215 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1218 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1221 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1233 (void) fprintf(stderr,
1234 "usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1235 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1236 " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1241 run_err(const char *fmt,...)
1247 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1248 (void) fprintf(fp, "%c", 0x01);
1249 (void) fprintf(fp, "scp: ");
1251 (void) vfprintf(fp, fmt, ap);
1253 (void) fprintf(fp, "\n");
1259 vfprintf(stderr, fmt, ap);
1261 fprintf(stderr, "\n");
1270 if (!stat(cp, &stb)) {
1271 if (S_ISDIR(stb.st_mode))
1275 run_err("%s: %s", cp, strerror(errno));
1290 if (!isalpha(c) && !isdigit((unsigned char)c)) {
1305 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1310 allocbuf(BUF *bp, int fd, int blksize)
1313 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1316 if (fstat(fd, &stb) < 0) {
1317 run_err("fstat: %s", strerror(errno));
1320 size = roundup(stb.st_blksize, blksize);
1323 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1325 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1326 if (bp->cnt >= size)
1328 if (bp->buf == NULL)
1329 bp->buf = xmalloc(size);
1331 bp->buf = xrealloc(bp->buf, 1, size);
1332 memset(bp->buf, 0, size);
1341 (void)write(STDERR_FILENO, "lost connection\n", 16);