1 /* $OpenBSD: scp.c,v 1.146 2006/07/10 16:37:36 stevesk 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 #ifdef HAVE_SYS_STAT_H
78 # include <sys/stat.h>
91 #include "pathnames.h"
94 #include "progressmeter.h"
96 extern char *__progname;
98 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
102 /* Struct for addargs */
105 /* Bandwidth limit */
106 off_t limit_rate = 0;
108 /* Name of current file being transferred. */
111 /* This is set to non-zero to enable verbose mode. */
112 int verbose_mode = 0;
114 /* This is set to zero if the progressmeter is not desired. */
115 int showprogress = 1;
117 /* This is the program to execute for the secured connection. ("ssh" or -S) */
118 char *ssh_program = _PATH_SSH_PROGRAM;
120 /* This is used to store the pid of ssh_program */
121 pid_t do_cmd_pid = -1;
126 if (do_cmd_pid > 1) {
127 kill(do_cmd_pid, signo ? signo : SIGTERM);
128 waitpid(do_cmd_pid, NULL, 0);
137 do_local_cmd(arglist *a)
144 fatal("do_local_cmd: no arguments");
147 fprintf(stderr, "Executing:");
148 for (i = 0; i < a->num; i++)
149 fprintf(stderr, " %s", a->list[i]);
150 fprintf(stderr, "\n");
152 if ((pid = fork()) == -1)
153 fatal("do_local_cmd: fork: %s", strerror(errno));
156 execvp(a->list[0], a->list);
162 signal(SIGTERM, killchild);
163 signal(SIGINT, killchild);
164 signal(SIGHUP, killchild);
166 while (waitpid(pid, &status, 0) == -1)
168 fatal("do_local_cmd: waitpid: %s", strerror(errno));
172 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
179 * This function executes the given command as the specified user on the
180 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
181 * assigns the input and output file descriptors on success.
185 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
187 int pin[2], pout[2], reserved[2];
191 "Executing: program %s host %s, user %s, command %s\n",
193 remuser ? remuser : "(unspecified)", cmd);
196 * Reserve two descriptors so that the real pipes won't get
197 * descriptors 0 and 1 because that will screw up dup2 below.
199 if (pipe(reserved) < 0)
200 fatal("pipe: %s", strerror(errno));
202 /* Create a socket pair for communicating with ssh. */
204 fatal("pipe: %s", strerror(errno));
206 fatal("pipe: %s", strerror(errno));
208 /* Free the reserved descriptors. */
212 /* Fork a child to execute the command on the remote host using ssh. */
214 if (do_cmd_pid == 0) {
223 replacearg(&args, 0, "%s", ssh_program);
225 addargs(&args, "-l%s", remuser);
226 addargs(&args, "%s", host);
227 addargs(&args, "%s", cmd);
229 execvp(ssh_program, args.list);
232 } else if (do_cmd_pid == -1) {
233 fatal("fork: %s", strerror(errno));
235 /* Parent. Close the other side, and return the local side. */
240 signal(SIGTERM, killchild);
241 signal(SIGINT, killchild);
242 signal(SIGHUP, killchild);
251 BUF *allocbuf(BUF *, int, int);
254 void run_err(const char *,...);
255 void verifydir(char *);
259 int errs, remin, remout;
260 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
263 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
266 void rsource(char *, struct stat *);
267 void sink(int, char *[]);
268 void source(int, char *[]);
269 void tolocal(int, char *[]);
270 void toremote(char *, int, char *[]);
274 main(int argc, char **argv)
276 int ch, fflag, tflag, status, n;
278 char *targ, *endp, **newargv;
282 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
285 /* Copy argv, because we modify it */
286 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
287 for (n = 0; n < argc; n++)
288 newargv[n] = xstrdup(argv[n]);
291 __progname = ssh_get_progname(argv[0]);
293 memset(&args, '\0', sizeof(args));
295 addargs(&args, "%s", ssh_program);
296 addargs(&args, "-x");
297 addargs(&args, "-oForwardAgent no");
298 addargs(&args, "-oPermitLocalCommand no");
299 addargs(&args, "-oClearAllForwardings yes");
302 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
304 /* User-visible flags. */
310 addargs(&args, "-%c", ch);
316 addargs(&args, "-%c%s", ch, optarg);
319 addargs(&args, "-p%s", optarg);
322 addargs(&args, "-oBatchmode yes");
325 speed = strtod(optarg, &endp);
326 if (speed <= 0 || *endp != '\0')
328 limit_rate = speed * 1024;
337 ssh_program = xstrdup(optarg);
340 addargs(&args, "-v");
344 addargs(&args, "-q");
348 /* Server options. */
350 targetshouldbedirectory = 1;
352 case 'f': /* "from" */
360 setmode(0, O_BINARY);
369 if ((pwd = getpwuid(userid = getuid())) == NULL)
370 fatal("unknown user %u", (u_int) userid);
372 if (!isatty(STDERR_FILENO))
375 remin = STDIN_FILENO;
376 remout = STDOUT_FILENO;
379 /* Follow "protocol", send data. */
392 targetshouldbedirectory = 1;
396 /* Command to be executed on remote system using "ssh". */
397 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
398 verbose_mode ? " -v" : "",
399 iamrecursive ? " -r" : "", pflag ? " -p" : "",
400 targetshouldbedirectory ? " -d" : "");
402 (void) signal(SIGPIPE, lostconn);
404 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
405 toremote(targ, argc, argv);
407 if (targetshouldbedirectory)
408 verifydir(argv[argc - 1]);
409 tolocal(argc, argv); /* Dest is local host. */
412 * Finally check the exit status of the ssh process, if one was forked
413 * and no error has occured yet
415 if (do_cmd_pid != -1 && errs == 0) {
419 (void) close(remout);
420 if (waitpid(do_cmd_pid, &status, 0) == -1)
423 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
431 toremote(char *targ, int argc, char **argv)
433 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
437 memset(&alist, '\0', sizeof(alist));
444 arg = xstrdup(argv[argc - 1]);
445 if ((thost = strrchr(arg, '@'))) {
456 if (tuser != NULL && !okname(tuser)) {
461 for (i = 0; i < argc - 1; i++) {
462 src = colon(argv[i]);
463 if (src) { /* remote to remote */
465 addargs(&alist, "%s", ssh_program);
467 addargs(&alist, "-v");
468 addargs(&alist, "-x");
469 addargs(&alist, "-oClearAllForwardings yes");
470 addargs(&alist, "-n");
475 host = strrchr(argv[i], '@');
479 host = cleanhostname(host);
482 suser = pwd->pw_name;
483 else if (!okname(suser))
485 addargs(&alist, "-l");
486 addargs(&alist, "%s", suser);
488 host = cleanhostname(argv[i]);
490 addargs(&alist, "%s", host);
491 addargs(&alist, "%s", cmd);
492 addargs(&alist, "%s", src);
493 addargs(&alist, "%s%s%s:%s",
494 tuser ? tuser : "", tuser ? "@" : "",
496 if (do_local_cmd(&alist) != 0)
498 } else { /* local to remote */
500 xasprintf(&bp, "%s -t %s", cmd, targ);
501 host = cleanhostname(thost);
502 if (do_cmd(host, tuser, bp, &remin,
516 tolocal(int argc, char **argv)
518 char *bp, *host, *src, *suser;
522 memset(&alist, '\0', sizeof(alist));
525 for (i = 0; i < argc - 1; i++) {
526 if (!(src = colon(argv[i]))) { /* Local to local. */
528 addargs(&alist, "%s", _PATH_CP);
530 addargs(&alist, "-r");
532 addargs(&alist, "-p");
533 addargs(&alist, "%s", argv[i]);
534 addargs(&alist, "%s", argv[argc-1]);
535 if (do_local_cmd(&alist))
542 if ((host = strrchr(argv[i], '@')) == NULL) {
549 suser = pwd->pw_name;
551 host = cleanhostname(host);
552 xasprintf(&bp, "%s -f %s", cmd, src);
553 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
559 sink(1, argv + argc - 1);
566 source(int argc, char **argv)
571 off_t i, amt, statbytes;
573 int fd = -1, haderr, indx;
574 char *last, *name, buf[2048];
577 for (indx = 0; indx < argc; ++indx) {
581 while (len > 1 && name[len-1] == '/')
583 if (strchr(name, '\n') != NULL) {
584 run_err("%s: skipping, filename contains a newline",
588 if ((fd = open(name, O_RDONLY, 0)) < 0)
590 if (fstat(fd, &stb) < 0) {
591 syserr: run_err("%s: %s", name, strerror(errno));
594 switch (stb.st_mode & S_IFMT) {
604 run_err("%s: not a regular file", name);
607 if ((last = strrchr(name, '/')) == NULL)
614 * Make it compatible with possible future
615 * versions expecting microseconds.
617 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
618 (u_long) stb.st_mtime,
619 (u_long) stb.st_atime);
620 (void) atomicio(vwrite, remout, buf, strlen(buf));
624 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
625 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
626 (u_int) (stb.st_mode & FILEMODEMASK),
627 (long long)stb.st_size, last);
629 fprintf(stderr, "Sending file modes: %s", buf);
631 (void) atomicio(vwrite, remout, buf, strlen(buf));
634 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
635 next: if (fd != -1) {
642 start_progress_meter(curfile, stb.st_size, &statbytes);
643 /* Keep writing after an error so that we stay sync'd up. */
644 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
646 if (i + amt > stb.st_size)
647 amt = stb.st_size - i;
649 result = atomicio(read, fd, bp->buf, amt);
654 (void) atomicio(vwrite, remout, bp->buf, amt);
656 result = atomicio(vwrite, remout, bp->buf, amt);
665 stop_progress_meter();
668 if (close(fd) < 0 && !haderr)
673 (void) atomicio(vwrite, remout, "", 1);
675 run_err("%s: %s", name, strerror(haderr));
681 rsource(char *name, struct stat *statp)
685 char *last, *vect[1], path[1100];
687 if (!(dirp = opendir(name))) {
688 run_err("%s: %s", name, strerror(errno));
691 last = strrchr(name, '/');
697 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
698 (u_long) statp->st_mtime,
699 (u_long) statp->st_atime);
700 (void) atomicio(vwrite, remout, path, strlen(path));
701 if (response() < 0) {
706 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
707 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
709 fprintf(stderr, "Entering directory: %s", path);
710 (void) atomicio(vwrite, remout, path, strlen(path));
711 if (response() < 0) {
715 while ((dp = readdir(dirp)) != NULL) {
718 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
720 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
721 run_err("%s/%s: name too long", name, dp->d_name);
724 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
728 (void) closedir(dirp);
729 (void) atomicio(vwrite, remout, "E\n", 2);
736 static struct timeval bwstart, bwend;
737 static int lamt, thresh = 16384;
739 struct timespec ts, rm;
741 if (!timerisset(&bwstart)) {
742 gettimeofday(&bwstart, NULL);
750 gettimeofday(&bwend, NULL);
751 timersub(&bwend, &bwstart, &bwend);
752 if (!timerisset(&bwend))
756 waitlen = (double)1000000L * lamt / limit_rate;
758 bwstart.tv_sec = waitlen / 1000000L;
759 bwstart.tv_usec = waitlen % 1000000L;
761 if (timercmp(&bwstart, &bwend, >)) {
762 timersub(&bwstart, &bwend, &bwend);
764 /* Adjust the wait time */
769 } else if (bwend.tv_usec < 100) {
775 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
776 while (nanosleep(&ts, &rm) == -1) {
784 gettimeofday(&bwstart, NULL);
788 sink(int argc, char **argv)
798 int amt, exists, first, ofd;
799 mode_t mode, omode, mask;
800 off_t size, statbytes;
801 int setimes, targisdir, wrerrno = 0;
802 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
803 struct timeval tv[2];
807 #define SCREWUP(str) { why = str; goto screwup; }
809 setimes = targisdir = 0;
814 run_err("ambiguous target");
818 if (targetshouldbedirectory)
821 (void) atomicio(vwrite, remout, "", 1);
822 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
824 for (first = 1;; first = 0) {
826 if (atomicio(read, remin, cp, 1) != 1)
829 SCREWUP("unexpected <newline>");
831 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
832 SCREWUP("lost connection");
834 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
837 fprintf(stderr, "Sink: %s", buf);
839 if (buf[0] == '\01' || buf[0] == '\02') {
841 (void) atomicio(vwrite, STDERR_FILENO,
842 buf + 1, strlen(buf + 1));
849 (void) atomicio(vwrite, remout, "", 1);
859 mtime.tv_sec = strtol(cp, &cp, 10);
860 if (!cp || *cp++ != ' ')
861 SCREWUP("mtime.sec not delimited");
862 mtime.tv_usec = strtol(cp, &cp, 10);
863 if (!cp || *cp++ != ' ')
864 SCREWUP("mtime.usec not delimited");
865 atime.tv_sec = strtol(cp, &cp, 10);
866 if (!cp || *cp++ != ' ')
867 SCREWUP("atime.sec not delimited");
868 atime.tv_usec = strtol(cp, &cp, 10);
869 if (!cp || *cp++ != '\0')
870 SCREWUP("atime.usec not delimited");
871 (void) atomicio(vwrite, remout, "", 1);
874 if (*cp != 'C' && *cp != 'D') {
876 * Check for the case "rcp remote:foo\* local:bar".
877 * In this case, the line "No match." can be returned
878 * by the shell before the rcp command on the remote is
879 * executed so the ^Aerror_message convention isn't
886 SCREWUP("expected control record");
889 for (++cp; cp < buf + 5; cp++) {
890 if (*cp < '0' || *cp > '7')
892 mode = (mode << 3) | (*cp - '0');
895 SCREWUP("mode not delimited");
897 for (size = 0; isdigit(*cp);)
898 size = size * 10 + (*cp++ - '0');
900 SCREWUP("size not delimited");
901 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
902 run_err("error: unexpected filename: %s", cp);
906 static char *namebuf;
907 static size_t cursize;
910 need = strlen(targ) + strlen(cp) + 250;
911 if (need > cursize) {
914 namebuf = xmalloc(need);
917 (void) snprintf(namebuf, need, "%s%s%s", targ,
918 strcmp(targ, "/") ? "/" : "", cp);
923 exists = stat(np, &stb) == 0;
925 int mod_flag = pflag;
927 SCREWUP("received directory without -r");
929 if (!S_ISDIR(stb.st_mode)) {
934 (void) chmod(np, mode);
936 /* Handle copying from a read-only
939 if (mkdir(np, mode | S_IRWXU) < 0)
942 vect[0] = xstrdup(np);
946 if (utimes(vect[0], tv) < 0)
947 run_err("%s: set times: %s",
948 vect[0], strerror(errno));
951 (void) chmod(vect[0], mode);
958 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
959 bad: run_err("%s: %s", np, strerror(errno));
962 (void) atomicio(vwrite, remout, "", 1);
963 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
972 start_progress_meter(curfile, size, &statbytes);
973 for (count = i = 0; i < size; i += 4096) {
979 j = atomicio(read, remin, cp, amt);
981 run_err("%s", j ? strerror(errno) :
982 "dropped connection");
993 if (count == bp->cnt) {
994 /* Keep reading so we stay sync'd up. */
996 if (atomicio(vwrite, ofd, bp->buf,
1007 stop_progress_meter();
1008 if (count != 0 && wrerr == NO &&
1009 atomicio(vwrite, ofd, bp->buf, count) != count) {
1013 if (wrerr == NO && ftruncate(ofd, size) != 0) {
1014 run_err("%s: truncate: %s", np, strerror(errno));
1018 if (exists || omode != mode)
1020 if (fchmod(ofd, omode)) {
1021 #else /* HAVE_FCHMOD */
1022 if (chmod(np, omode)) {
1023 #endif /* HAVE_FCHMOD */
1024 run_err("%s: set mode: %s",
1025 np, strerror(errno));
1029 if (!exists && omode != mode)
1031 if (fchmod(ofd, omode & ~mask)) {
1032 #else /* HAVE_FCHMOD */
1033 if (chmod(np, omode & ~mask)) {
1034 #endif /* HAVE_FCHMOD */
1035 run_err("%s: set mode: %s",
1036 np, strerror(errno));
1040 if (close(ofd) == -1) {
1045 if (setimes && wrerr == NO) {
1047 if (utimes(np, tv) < 0) {
1048 run_err("%s: set times: %s",
1049 np, strerror(errno));
1055 run_err("%s: %s", np, strerror(wrerrno));
1058 (void) atomicio(vwrite, remout, "", 1);
1065 run_err("protocol error: %s", why);
1072 char ch, *cp, resp, rbuf[2048];
1074 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1084 case 1: /* error, followed by error msg */
1085 case 2: /* fatal error, "" */
1087 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1090 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1093 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1105 (void) fprintf(stderr,
1106 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1107 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1108 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1113 run_err(const char *fmt,...)
1119 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1120 (void) fprintf(fp, "%c", 0x01);
1121 (void) fprintf(fp, "scp: ");
1123 (void) vfprintf(fp, fmt, ap);
1125 (void) fprintf(fp, "\n");
1131 vfprintf(stderr, fmt, ap);
1133 fprintf(stderr, "\n");
1142 if (!stat(cp, &stb)) {
1143 if (S_ISDIR(stb.st_mode))
1147 run_err("%s: %s", cp, strerror(errno));
1162 if (!isalpha(c) && !isdigit(c)) {
1177 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1182 allocbuf(BUF *bp, int fd, int blksize)
1185 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1188 if (fstat(fd, &stb) < 0) {
1189 run_err("fstat: %s", strerror(errno));
1192 size = roundup(stb.st_blksize, blksize);
1195 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1197 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1198 if (bp->cnt >= size)
1200 if (bp->buf == NULL)
1201 bp->buf = xmalloc(size);
1203 bp->buf = xrealloc(bp->buf, 1, size);
1204 memset(bp->buf, 0, size);
1213 write(STDERR_FILENO, "lost connection\n", 16);