1 /* $OpenBSD: scp.c,v 1.155 2006/08/03 03:34:42 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>
81 #ifdef HAVE_SYS_TIME_H
82 # include <sys/time.h>
101 #include "atomicio.h"
102 #include "pathnames.h"
105 #include "progressmeter.h"
107 extern char *__progname;
109 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
113 /* Struct for addargs */
116 /* Bandwidth limit */
117 off_t limit_rate = 0;
119 /* Name of current file being transferred. */
122 /* This is set to non-zero to enable verbose mode. */
123 int verbose_mode = 0;
125 /* This is set to zero if the progressmeter is not desired. */
126 int showprogress = 1;
128 /* This is the program to execute for the secured connection. ("ssh" or -S) */
131 /* This is used to store the pid of ssh_program */
132 pid_t do_cmd_pid = -1;
137 if (do_cmd_pid > 1) {
138 kill(do_cmd_pid, signo ? signo : SIGTERM);
139 waitpid(do_cmd_pid, NULL, 0);
148 do_local_cmd(arglist *a)
155 fatal("do_local_cmd: no arguments");
158 fprintf(stderr, "Executing:");
159 for (i = 0; i < a->num; i++)
160 fprintf(stderr, " %s", a->list[i]);
161 fprintf(stderr, "\n");
163 if ((pid = fork()) == -1)
164 fatal("do_local_cmd: fork: %s", strerror(errno));
167 execvp(a->list[0], a->list);
173 signal(SIGTERM, killchild);
174 signal(SIGINT, killchild);
175 signal(SIGHUP, killchild);
177 while (waitpid(pid, &status, 0) == -1)
179 fatal("do_local_cmd: waitpid: %s", strerror(errno));
183 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
190 * This function executes the given command as the specified user on the
191 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
192 * assigns the input and output file descriptors on success.
196 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
198 int pin[2], pout[2], reserved[2];
202 "Executing: program %s host %s, user %s, command %s\n",
204 remuser ? remuser : "(unspecified)", cmd);
207 * Reserve two descriptors so that the real pipes won't get
208 * descriptors 0 and 1 because that will screw up dup2 below.
210 if (pipe(reserved) < 0)
211 fatal("pipe: %s", strerror(errno));
213 /* Create a socket pair for communicating with ssh. */
215 fatal("pipe: %s", strerror(errno));
217 fatal("pipe: %s", strerror(errno));
219 /* Free the reserved descriptors. */
223 /* Fork a child to execute the command on the remote host using ssh. */
225 if (do_cmd_pid == 0) {
234 replacearg(&args, 0, "%s", ssh_program);
236 addargs(&args, "-l%s", remuser);
237 addargs(&args, "%s", host);
238 addargs(&args, "%s", cmd);
240 execvp(ssh_program, args.list);
243 } else if (do_cmd_pid == -1) {
244 fatal("fork: %s", strerror(errno));
246 /* Parent. Close the other side, and return the local side. */
251 signal(SIGTERM, killchild);
252 signal(SIGINT, killchild);
253 signal(SIGHUP, killchild);
262 BUF *allocbuf(BUF *, int, int);
265 void run_err(const char *,...);
266 void verifydir(char *);
270 int errs, remin, remout;
271 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
274 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
277 void rsource(char *, struct stat *);
278 void sink(int, char *[]);
279 void source(int, char *[]);
280 void tolocal(int, char *[]);
281 void toremote(char *, int, char *[]);
285 main(int argc, char **argv)
287 int ch, fflag, tflag, status, n;
289 char *targ, *endp, **newargv;
293 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
296 /* Copy argv, because we modify it */
297 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
298 for (n = 0; n < argc; n++)
299 newargv[n] = xstrdup(argv[n]);
302 __progname = ssh_get_progname(argv[0]);
304 ssh_program = _PATH_SSH_PROGRAM;
306 memset(&args, '\0', sizeof(args));
308 addargs(&args, "%s", ssh_program);
309 addargs(&args, "-x");
310 addargs(&args, "-oForwardAgent no");
311 addargs(&args, "-oPermitLocalCommand no");
312 addargs(&args, "-oClearAllForwardings yes");
315 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
317 /* User-visible flags. */
323 addargs(&args, "-%c", ch);
329 addargs(&args, "-%c%s", ch, optarg);
332 addargs(&args, "-p%s", optarg);
335 addargs(&args, "-oBatchmode yes");
338 speed = strtod(optarg, &endp);
339 if (speed <= 0 || *endp != '\0')
341 limit_rate = speed * 1024;
350 ssh_program = xstrdup(optarg);
353 addargs(&args, "-v");
357 addargs(&args, "-q");
361 /* Server options. */
363 targetshouldbedirectory = 1;
365 case 'f': /* "from" */
373 setmode(0, O_BINARY);
382 if ((pwd = getpwuid(userid = getuid())) == NULL)
383 fatal("unknown user %u", (u_int) userid);
385 if (!isatty(STDERR_FILENO))
388 remin = STDIN_FILENO;
389 remout = STDOUT_FILENO;
392 /* Follow "protocol", send data. */
405 targetshouldbedirectory = 1;
409 /* Command to be executed on remote system using "ssh". */
410 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
411 verbose_mode ? " -v" : "",
412 iamrecursive ? " -r" : "", pflag ? " -p" : "",
413 targetshouldbedirectory ? " -d" : "");
415 (void) signal(SIGPIPE, lostconn);
417 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
418 toremote(targ, argc, argv);
420 if (targetshouldbedirectory)
421 verifydir(argv[argc - 1]);
422 tolocal(argc, argv); /* Dest is local host. */
425 * Finally check the exit status of the ssh process, if one was forked
426 * and no error has occured yet
428 if (do_cmd_pid != -1 && errs == 0) {
432 (void) close(remout);
433 if (waitpid(do_cmd_pid, &status, 0) == -1)
436 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
444 toremote(char *targ, int argc, char **argv)
446 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
450 memset(&alist, '\0', sizeof(alist));
457 arg = xstrdup(argv[argc - 1]);
458 if ((thost = strrchr(arg, '@'))) {
469 if (tuser != NULL && !okname(tuser)) {
474 for (i = 0; i < argc - 1; i++) {
475 src = colon(argv[i]);
476 if (src) { /* remote to remote */
478 addargs(&alist, "%s", ssh_program);
480 addargs(&alist, "-v");
481 addargs(&alist, "-x");
482 addargs(&alist, "-oClearAllForwardings yes");
483 addargs(&alist, "-n");
488 host = strrchr(argv[i], '@');
492 host = cleanhostname(host);
495 suser = pwd->pw_name;
496 else if (!okname(suser))
498 addargs(&alist, "-l");
499 addargs(&alist, "%s", suser);
501 host = cleanhostname(argv[i]);
503 addargs(&alist, "%s", host);
504 addargs(&alist, "%s", cmd);
505 addargs(&alist, "%s", src);
506 addargs(&alist, "%s%s%s:%s",
507 tuser ? tuser : "", tuser ? "@" : "",
509 if (do_local_cmd(&alist) != 0)
511 } else { /* local to remote */
513 xasprintf(&bp, "%s -t %s", cmd, targ);
514 host = cleanhostname(thost);
515 if (do_cmd(host, tuser, bp, &remin,
529 tolocal(int argc, char **argv)
531 char *bp, *host, *src, *suser;
535 memset(&alist, '\0', sizeof(alist));
538 for (i = 0; i < argc - 1; i++) {
539 if (!(src = colon(argv[i]))) { /* Local to local. */
541 addargs(&alist, "%s", _PATH_CP);
543 addargs(&alist, "-r");
545 addargs(&alist, "-p");
546 addargs(&alist, "%s", argv[i]);
547 addargs(&alist, "%s", argv[argc-1]);
548 if (do_local_cmd(&alist))
555 if ((host = strrchr(argv[i], '@')) == NULL) {
562 suser = pwd->pw_name;
564 host = cleanhostname(host);
565 xasprintf(&bp, "%s -f %s", cmd, src);
566 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
572 sink(1, argv + argc - 1);
579 source(int argc, char **argv)
584 off_t i, amt, statbytes;
586 int fd = -1, haderr, indx;
587 char *last, *name, buf[16384];
590 for (indx = 0; indx < argc; ++indx) {
594 while (len > 1 && name[len-1] == '/')
596 if (strchr(name, '\n') != NULL) {
597 run_err("%s: skipping, filename contains a newline",
601 if ((fd = open(name, O_RDONLY, 0)) < 0)
603 if (fstat(fd, &stb) < 0) {
604 syserr: run_err("%s: %s", name, strerror(errno));
607 switch (stb.st_mode & S_IFMT) {
617 run_err("%s: not a regular file", name);
620 if ((last = strrchr(name, '/')) == NULL)
627 * Make it compatible with possible future
628 * versions expecting microseconds.
630 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
631 (u_long) stb.st_mtime,
632 (u_long) stb.st_atime);
633 (void) atomicio(vwrite, remout, buf, strlen(buf));
637 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
638 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
639 (u_int) (stb.st_mode & FILEMODEMASK),
640 (long long)stb.st_size, last);
642 fprintf(stderr, "Sending file modes: %s", buf);
644 (void) atomicio(vwrite, remout, buf, strlen(buf));
647 if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) {
648 next: if (fd != -1) {
655 start_progress_meter(curfile, stb.st_size, &statbytes);
656 /* Keep writing after an error so that we stay sync'd up. */
657 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
659 if (i + amt > stb.st_size)
660 amt = stb.st_size - i;
662 result = atomicio(read, fd, bp->buf, amt);
667 (void) atomicio(vwrite, remout, bp->buf, amt);
669 result = atomicio(vwrite, remout, bp->buf, amt);
678 stop_progress_meter();
681 if (close(fd) < 0 && !haderr)
686 (void) atomicio(vwrite, remout, "", 1);
688 run_err("%s: %s", name, strerror(haderr));
694 rsource(char *name, struct stat *statp)
698 char *last, *vect[1], path[1100];
700 if (!(dirp = opendir(name))) {
701 run_err("%s: %s", name, strerror(errno));
704 last = strrchr(name, '/');
710 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
711 (u_long) statp->st_mtime,
712 (u_long) statp->st_atime);
713 (void) atomicio(vwrite, remout, path, strlen(path));
714 if (response() < 0) {
719 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
720 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
722 fprintf(stderr, "Entering directory: %s", path);
723 (void) atomicio(vwrite, remout, path, strlen(path));
724 if (response() < 0) {
728 while ((dp = readdir(dirp)) != NULL) {
731 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
733 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
734 run_err("%s/%s: name too long", name, dp->d_name);
737 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
741 (void) closedir(dirp);
742 (void) atomicio(vwrite, remout, "E\n", 2);
749 static struct timeval bwstart, bwend;
750 static int lamt, thresh = 16384;
752 struct timespec ts, rm;
754 if (!timerisset(&bwstart)) {
755 gettimeofday(&bwstart, NULL);
763 gettimeofday(&bwend, NULL);
764 timersub(&bwend, &bwstart, &bwend);
765 if (!timerisset(&bwend))
769 waitlen = (double)1000000L * lamt / limit_rate;
771 bwstart.tv_sec = waitlen / 1000000L;
772 bwstart.tv_usec = waitlen % 1000000L;
774 if (timercmp(&bwstart, &bwend, >)) {
775 timersub(&bwstart, &bwend, &bwend);
777 /* Adjust the wait time */
782 } else if (bwend.tv_usec < 100) {
788 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
789 while (nanosleep(&ts, &rm) == -1) {
797 gettimeofday(&bwstart, NULL);
801 sink(int argc, char **argv)
811 int amt, exists, first, ofd;
812 mode_t mode, omode, mask;
813 off_t size, statbytes;
814 int setimes, targisdir, wrerrno = 0;
815 char ch, *cp, *np, *targ, *why, *vect[1], buf[16384];
816 struct timeval tv[2];
820 #define SCREWUP(str) { why = str; goto screwup; }
822 setimes = targisdir = 0;
827 run_err("ambiguous target");
831 if (targetshouldbedirectory)
834 (void) atomicio(vwrite, remout, "", 1);
835 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
837 for (first = 1;; first = 0) {
839 if (atomicio(read, remin, cp, 1) != 1)
842 SCREWUP("unexpected <newline>");
844 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
845 SCREWUP("lost connection");
847 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
850 fprintf(stderr, "Sink: %s", buf);
852 if (buf[0] == '\01' || buf[0] == '\02') {
854 (void) atomicio(vwrite, STDERR_FILENO,
855 buf + 1, strlen(buf + 1));
862 (void) atomicio(vwrite, remout, "", 1);
872 mtime.tv_sec = strtol(cp, &cp, 10);
873 if (!cp || *cp++ != ' ')
874 SCREWUP("mtime.sec not delimited");
875 mtime.tv_usec = strtol(cp, &cp, 10);
876 if (!cp || *cp++ != ' ')
877 SCREWUP("mtime.usec not delimited");
878 atime.tv_sec = strtol(cp, &cp, 10);
879 if (!cp || *cp++ != ' ')
880 SCREWUP("atime.sec not delimited");
881 atime.tv_usec = strtol(cp, &cp, 10);
882 if (!cp || *cp++ != '\0')
883 SCREWUP("atime.usec not delimited");
884 (void) atomicio(vwrite, remout, "", 1);
887 if (*cp != 'C' && *cp != 'D') {
889 * Check for the case "rcp remote:foo\* local:bar".
890 * In this case, the line "No match." can be returned
891 * by the shell before the rcp command on the remote is
892 * executed so the ^Aerror_message convention isn't
899 SCREWUP("expected control record");
902 for (++cp; cp < buf + 5; cp++) {
903 if (*cp < '0' || *cp > '7')
905 mode = (mode << 3) | (*cp - '0');
908 SCREWUP("mode not delimited");
910 for (size = 0; isdigit(*cp);)
911 size = size * 10 + (*cp++ - '0');
913 SCREWUP("size not delimited");
914 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
915 run_err("error: unexpected filename: %s", cp);
919 static char *namebuf;
920 static size_t cursize;
923 need = strlen(targ) + strlen(cp) + 250;
924 if (need > cursize) {
927 namebuf = xmalloc(need);
930 (void) snprintf(namebuf, need, "%s%s%s", targ,
931 strcmp(targ, "/") ? "/" : "", cp);
936 exists = stat(np, &stb) == 0;
938 int mod_flag = pflag;
940 SCREWUP("received directory without -r");
942 if (!S_ISDIR(stb.st_mode)) {
947 (void) chmod(np, mode);
949 /* Handle copying from a read-only
952 if (mkdir(np, mode | S_IRWXU) < 0)
955 vect[0] = xstrdup(np);
959 if (utimes(vect[0], tv) < 0)
960 run_err("%s: set times: %s",
961 vect[0], strerror(errno));
964 (void) chmod(vect[0], mode);
971 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
972 bad: run_err("%s: %s", np, strerror(errno));
975 (void) atomicio(vwrite, remout, "", 1);
976 if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) {
985 start_progress_meter(curfile, size, &statbytes);
986 for (count = i = 0; i < size; i += sizeof(buf)) {
992 j = atomicio(read, remin, cp, amt);
994 run_err("%s", j ? strerror(errno) :
995 "dropped connection");
1004 bwlimit(sizeof(buf));
1006 if (count == bp->cnt) {
1007 /* Keep reading so we stay sync'd up. */
1009 if (atomicio(vwrite, ofd, bp->buf,
1020 stop_progress_meter();
1021 if (count != 0 && wrerr == NO &&
1022 atomicio(vwrite, ofd, bp->buf, count) != count) {
1026 if (wrerr == NO && ftruncate(ofd, size) != 0) {
1027 run_err("%s: truncate: %s", np, strerror(errno));
1031 if (exists || omode != mode)
1033 if (fchmod(ofd, omode)) {
1034 #else /* HAVE_FCHMOD */
1035 if (chmod(np, omode)) {
1036 #endif /* HAVE_FCHMOD */
1037 run_err("%s: set mode: %s",
1038 np, strerror(errno));
1042 if (!exists && omode != mode)
1044 if (fchmod(ofd, omode & ~mask)) {
1045 #else /* HAVE_FCHMOD */
1046 if (chmod(np, omode & ~mask)) {
1047 #endif /* HAVE_FCHMOD */
1048 run_err("%s: set mode: %s",
1049 np, strerror(errno));
1053 if (close(ofd) == -1) {
1058 if (setimes && wrerr == NO) {
1060 if (utimes(np, tv) < 0) {
1061 run_err("%s: set times: %s",
1062 np, strerror(errno));
1068 run_err("%s: %s", np, strerror(wrerrno));
1071 (void) atomicio(vwrite, remout, "", 1);
1078 run_err("protocol error: %s", why);
1085 char ch, *cp, resp, rbuf[2048];
1087 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1097 case 1: /* error, followed by error msg */
1098 case 2: /* fatal error, "" */
1100 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1103 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1106 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1118 (void) fprintf(stderr,
1119 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1120 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1121 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1126 run_err(const char *fmt,...)
1132 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1133 (void) fprintf(fp, "%c", 0x01);
1134 (void) fprintf(fp, "scp: ");
1136 (void) vfprintf(fp, fmt, ap);
1138 (void) fprintf(fp, "\n");
1144 vfprintf(stderr, fmt, ap);
1146 fprintf(stderr, "\n");
1155 if (!stat(cp, &stb)) {
1156 if (S_ISDIR(stb.st_mode))
1160 run_err("%s: %s", cp, strerror(errno));
1175 if (!isalpha(c) && !isdigit(c)) {
1190 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1195 allocbuf(BUF *bp, int fd, int blksize)
1198 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1201 if (fstat(fd, &stb) < 0) {
1202 run_err("fstat: %s", strerror(errno));
1205 size = roundup(stb.st_blksize, blksize);
1208 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1210 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1211 if (bp->cnt >= size)
1213 if (bp->buf == NULL)
1214 bp->buf = xmalloc(size);
1216 bp->buf = xrealloc(bp->buf, 1, size);
1217 memset(bp->buf, 0, size);
1226 write(STDERR_FILENO, "lost connection\n", 16);