1 /* $OpenBSD: scp.c,v 1.148 2006/07/17 01:31:09 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>
93 #include "pathnames.h"
96 #include "progressmeter.h"
98 extern char *__progname;
100 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
104 /* Struct for addargs */
107 /* Bandwidth limit */
108 off_t limit_rate = 0;
110 /* Name of current file being transferred. */
113 /* This is set to non-zero to enable verbose mode. */
114 int verbose_mode = 0;
116 /* This is set to zero if the progressmeter is not desired. */
117 int showprogress = 1;
119 /* This is the program to execute for the secured connection. ("ssh" or -S) */
120 char *ssh_program = _PATH_SSH_PROGRAM;
122 /* This is used to store the pid of ssh_program */
123 pid_t do_cmd_pid = -1;
128 if (do_cmd_pid > 1) {
129 kill(do_cmd_pid, signo ? signo : SIGTERM);
130 waitpid(do_cmd_pid, NULL, 0);
139 do_local_cmd(arglist *a)
146 fatal("do_local_cmd: no arguments");
149 fprintf(stderr, "Executing:");
150 for (i = 0; i < a->num; i++)
151 fprintf(stderr, " %s", a->list[i]);
152 fprintf(stderr, "\n");
154 if ((pid = fork()) == -1)
155 fatal("do_local_cmd: fork: %s", strerror(errno));
158 execvp(a->list[0], a->list);
164 signal(SIGTERM, killchild);
165 signal(SIGINT, killchild);
166 signal(SIGHUP, killchild);
168 while (waitpid(pid, &status, 0) == -1)
170 fatal("do_local_cmd: waitpid: %s", strerror(errno));
174 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
181 * This function executes the given command as the specified user on the
182 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
183 * assigns the input and output file descriptors on success.
187 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
189 int pin[2], pout[2], reserved[2];
193 "Executing: program %s host %s, user %s, command %s\n",
195 remuser ? remuser : "(unspecified)", cmd);
198 * Reserve two descriptors so that the real pipes won't get
199 * descriptors 0 and 1 because that will screw up dup2 below.
201 if (pipe(reserved) < 0)
202 fatal("pipe: %s", strerror(errno));
204 /* Create a socket pair for communicating with ssh. */
206 fatal("pipe: %s", strerror(errno));
208 fatal("pipe: %s", strerror(errno));
210 /* Free the reserved descriptors. */
214 /* Fork a child to execute the command on the remote host using ssh. */
216 if (do_cmd_pid == 0) {
225 replacearg(&args, 0, "%s", ssh_program);
227 addargs(&args, "-l%s", remuser);
228 addargs(&args, "%s", host);
229 addargs(&args, "%s", cmd);
231 execvp(ssh_program, args.list);
234 } else if (do_cmd_pid == -1) {
235 fatal("fork: %s", strerror(errno));
237 /* Parent. Close the other side, and return the local side. */
242 signal(SIGTERM, killchild);
243 signal(SIGINT, killchild);
244 signal(SIGHUP, killchild);
253 BUF *allocbuf(BUF *, int, int);
256 void run_err(const char *,...);
257 void verifydir(char *);
261 int errs, remin, remout;
262 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
265 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
268 void rsource(char *, struct stat *);
269 void sink(int, char *[]);
270 void source(int, char *[]);
271 void tolocal(int, char *[]);
272 void toremote(char *, int, char *[]);
276 main(int argc, char **argv)
278 int ch, fflag, tflag, status, n;
280 char *targ, *endp, **newargv;
284 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
287 /* Copy argv, because we modify it */
288 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
289 for (n = 0; n < argc; n++)
290 newargv[n] = xstrdup(argv[n]);
293 __progname = ssh_get_progname(argv[0]);
295 memset(&args, '\0', sizeof(args));
297 addargs(&args, "%s", ssh_program);
298 addargs(&args, "-x");
299 addargs(&args, "-oForwardAgent no");
300 addargs(&args, "-oPermitLocalCommand no");
301 addargs(&args, "-oClearAllForwardings yes");
304 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
306 /* User-visible flags. */
312 addargs(&args, "-%c", ch);
318 addargs(&args, "-%c%s", ch, optarg);
321 addargs(&args, "-p%s", optarg);
324 addargs(&args, "-oBatchmode yes");
327 speed = strtod(optarg, &endp);
328 if (speed <= 0 || *endp != '\0')
330 limit_rate = speed * 1024;
339 ssh_program = xstrdup(optarg);
342 addargs(&args, "-v");
346 addargs(&args, "-q");
350 /* Server options. */
352 targetshouldbedirectory = 1;
354 case 'f': /* "from" */
362 setmode(0, O_BINARY);
371 if ((pwd = getpwuid(userid = getuid())) == NULL)
372 fatal("unknown user %u", (u_int) userid);
374 if (!isatty(STDERR_FILENO))
377 remin = STDIN_FILENO;
378 remout = STDOUT_FILENO;
381 /* Follow "protocol", send data. */
394 targetshouldbedirectory = 1;
398 /* Command to be executed on remote system using "ssh". */
399 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
400 verbose_mode ? " -v" : "",
401 iamrecursive ? " -r" : "", pflag ? " -p" : "",
402 targetshouldbedirectory ? " -d" : "");
404 (void) signal(SIGPIPE, lostconn);
406 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
407 toremote(targ, argc, argv);
409 if (targetshouldbedirectory)
410 verifydir(argv[argc - 1]);
411 tolocal(argc, argv); /* Dest is local host. */
414 * Finally check the exit status of the ssh process, if one was forked
415 * and no error has occured yet
417 if (do_cmd_pid != -1 && errs == 0) {
421 (void) close(remout);
422 if (waitpid(do_cmd_pid, &status, 0) == -1)
425 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
433 toremote(char *targ, int argc, char **argv)
435 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
439 memset(&alist, '\0', sizeof(alist));
446 arg = xstrdup(argv[argc - 1]);
447 if ((thost = strrchr(arg, '@'))) {
458 if (tuser != NULL && !okname(tuser)) {
463 for (i = 0; i < argc - 1; i++) {
464 src = colon(argv[i]);
465 if (src) { /* remote to remote */
467 addargs(&alist, "%s", ssh_program);
469 addargs(&alist, "-v");
470 addargs(&alist, "-x");
471 addargs(&alist, "-oClearAllForwardings yes");
472 addargs(&alist, "-n");
477 host = strrchr(argv[i], '@');
481 host = cleanhostname(host);
484 suser = pwd->pw_name;
485 else if (!okname(suser))
487 addargs(&alist, "-l");
488 addargs(&alist, "%s", suser);
490 host = cleanhostname(argv[i]);
492 addargs(&alist, "%s", host);
493 addargs(&alist, "%s", cmd);
494 addargs(&alist, "%s", src);
495 addargs(&alist, "%s%s%s:%s",
496 tuser ? tuser : "", tuser ? "@" : "",
498 if (do_local_cmd(&alist) != 0)
500 } else { /* local to remote */
502 xasprintf(&bp, "%s -t %s", cmd, targ);
503 host = cleanhostname(thost);
504 if (do_cmd(host, tuser, bp, &remin,
518 tolocal(int argc, char **argv)
520 char *bp, *host, *src, *suser;
524 memset(&alist, '\0', sizeof(alist));
527 for (i = 0; i < argc - 1; i++) {
528 if (!(src = colon(argv[i]))) { /* Local to local. */
530 addargs(&alist, "%s", _PATH_CP);
532 addargs(&alist, "-r");
534 addargs(&alist, "-p");
535 addargs(&alist, "%s", argv[i]);
536 addargs(&alist, "%s", argv[argc-1]);
537 if (do_local_cmd(&alist))
544 if ((host = strrchr(argv[i], '@')) == NULL) {
551 suser = pwd->pw_name;
553 host = cleanhostname(host);
554 xasprintf(&bp, "%s -f %s", cmd, src);
555 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
561 sink(1, argv + argc - 1);
568 source(int argc, char **argv)
573 off_t i, amt, statbytes;
575 int fd = -1, haderr, indx;
576 char *last, *name, buf[2048];
579 for (indx = 0; indx < argc; ++indx) {
583 while (len > 1 && name[len-1] == '/')
585 if (strchr(name, '\n') != NULL) {
586 run_err("%s: skipping, filename contains a newline",
590 if ((fd = open(name, O_RDONLY, 0)) < 0)
592 if (fstat(fd, &stb) < 0) {
593 syserr: run_err("%s: %s", name, strerror(errno));
596 switch (stb.st_mode & S_IFMT) {
606 run_err("%s: not a regular file", name);
609 if ((last = strrchr(name, '/')) == NULL)
616 * Make it compatible with possible future
617 * versions expecting microseconds.
619 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
620 (u_long) stb.st_mtime,
621 (u_long) stb.st_atime);
622 (void) atomicio(vwrite, remout, buf, strlen(buf));
626 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
627 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
628 (u_int) (stb.st_mode & FILEMODEMASK),
629 (long long)stb.st_size, last);
631 fprintf(stderr, "Sending file modes: %s", buf);
633 (void) atomicio(vwrite, remout, buf, strlen(buf));
636 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
637 next: if (fd != -1) {
644 start_progress_meter(curfile, stb.st_size, &statbytes);
645 /* Keep writing after an error so that we stay sync'd up. */
646 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
648 if (i + amt > stb.st_size)
649 amt = stb.st_size - i;
651 result = atomicio(read, fd, bp->buf, amt);
656 (void) atomicio(vwrite, remout, bp->buf, amt);
658 result = atomicio(vwrite, remout, bp->buf, amt);
667 stop_progress_meter();
670 if (close(fd) < 0 && !haderr)
675 (void) atomicio(vwrite, remout, "", 1);
677 run_err("%s: %s", name, strerror(haderr));
683 rsource(char *name, struct stat *statp)
687 char *last, *vect[1], path[1100];
689 if (!(dirp = opendir(name))) {
690 run_err("%s: %s", name, strerror(errno));
693 last = strrchr(name, '/');
699 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
700 (u_long) statp->st_mtime,
701 (u_long) statp->st_atime);
702 (void) atomicio(vwrite, remout, path, strlen(path));
703 if (response() < 0) {
708 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
709 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
711 fprintf(stderr, "Entering directory: %s", path);
712 (void) atomicio(vwrite, remout, path, strlen(path));
713 if (response() < 0) {
717 while ((dp = readdir(dirp)) != NULL) {
720 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
722 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
723 run_err("%s/%s: name too long", name, dp->d_name);
726 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
730 (void) closedir(dirp);
731 (void) atomicio(vwrite, remout, "E\n", 2);
738 static struct timeval bwstart, bwend;
739 static int lamt, thresh = 16384;
741 struct timespec ts, rm;
743 if (!timerisset(&bwstart)) {
744 gettimeofday(&bwstart, NULL);
752 gettimeofday(&bwend, NULL);
753 timersub(&bwend, &bwstart, &bwend);
754 if (!timerisset(&bwend))
758 waitlen = (double)1000000L * lamt / limit_rate;
760 bwstart.tv_sec = waitlen / 1000000L;
761 bwstart.tv_usec = waitlen % 1000000L;
763 if (timercmp(&bwstart, &bwend, >)) {
764 timersub(&bwstart, &bwend, &bwend);
766 /* Adjust the wait time */
771 } else if (bwend.tv_usec < 100) {
777 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
778 while (nanosleep(&ts, &rm) == -1) {
786 gettimeofday(&bwstart, NULL);
790 sink(int argc, char **argv)
800 int amt, exists, first, ofd;
801 mode_t mode, omode, mask;
802 off_t size, statbytes;
803 int setimes, targisdir, wrerrno = 0;
804 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
805 struct timeval tv[2];
809 #define SCREWUP(str) { why = str; goto screwup; }
811 setimes = targisdir = 0;
816 run_err("ambiguous target");
820 if (targetshouldbedirectory)
823 (void) atomicio(vwrite, remout, "", 1);
824 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
826 for (first = 1;; first = 0) {
828 if (atomicio(read, remin, cp, 1) != 1)
831 SCREWUP("unexpected <newline>");
833 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
834 SCREWUP("lost connection");
836 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
839 fprintf(stderr, "Sink: %s", buf);
841 if (buf[0] == '\01' || buf[0] == '\02') {
843 (void) atomicio(vwrite, STDERR_FILENO,
844 buf + 1, strlen(buf + 1));
851 (void) atomicio(vwrite, remout, "", 1);
861 mtime.tv_sec = strtol(cp, &cp, 10);
862 if (!cp || *cp++ != ' ')
863 SCREWUP("mtime.sec not delimited");
864 mtime.tv_usec = strtol(cp, &cp, 10);
865 if (!cp || *cp++ != ' ')
866 SCREWUP("mtime.usec not delimited");
867 atime.tv_sec = strtol(cp, &cp, 10);
868 if (!cp || *cp++ != ' ')
869 SCREWUP("atime.sec not delimited");
870 atime.tv_usec = strtol(cp, &cp, 10);
871 if (!cp || *cp++ != '\0')
872 SCREWUP("atime.usec not delimited");
873 (void) atomicio(vwrite, remout, "", 1);
876 if (*cp != 'C' && *cp != 'D') {
878 * Check for the case "rcp remote:foo\* local:bar".
879 * In this case, the line "No match." can be returned
880 * by the shell before the rcp command on the remote is
881 * executed so the ^Aerror_message convention isn't
888 SCREWUP("expected control record");
891 for (++cp; cp < buf + 5; cp++) {
892 if (*cp < '0' || *cp > '7')
894 mode = (mode << 3) | (*cp - '0');
897 SCREWUP("mode not delimited");
899 for (size = 0; isdigit(*cp);)
900 size = size * 10 + (*cp++ - '0');
902 SCREWUP("size not delimited");
903 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
904 run_err("error: unexpected filename: %s", cp);
908 static char *namebuf;
909 static size_t cursize;
912 need = strlen(targ) + strlen(cp) + 250;
913 if (need > cursize) {
916 namebuf = xmalloc(need);
919 (void) snprintf(namebuf, need, "%s%s%s", targ,
920 strcmp(targ, "/") ? "/" : "", cp);
925 exists = stat(np, &stb) == 0;
927 int mod_flag = pflag;
929 SCREWUP("received directory without -r");
931 if (!S_ISDIR(stb.st_mode)) {
936 (void) chmod(np, mode);
938 /* Handle copying from a read-only
941 if (mkdir(np, mode | S_IRWXU) < 0)
944 vect[0] = xstrdup(np);
948 if (utimes(vect[0], tv) < 0)
949 run_err("%s: set times: %s",
950 vect[0], strerror(errno));
953 (void) chmod(vect[0], mode);
960 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
961 bad: run_err("%s: %s", np, strerror(errno));
964 (void) atomicio(vwrite, remout, "", 1);
965 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
974 start_progress_meter(curfile, size, &statbytes);
975 for (count = i = 0; i < size; i += 4096) {
981 j = atomicio(read, remin, cp, amt);
983 run_err("%s", j ? strerror(errno) :
984 "dropped connection");
995 if (count == bp->cnt) {
996 /* Keep reading so we stay sync'd up. */
998 if (atomicio(vwrite, ofd, bp->buf,
1009 stop_progress_meter();
1010 if (count != 0 && wrerr == NO &&
1011 atomicio(vwrite, ofd, bp->buf, count) != count) {
1015 if (wrerr == NO && ftruncate(ofd, size) != 0) {
1016 run_err("%s: truncate: %s", np, strerror(errno));
1020 if (exists || omode != mode)
1022 if (fchmod(ofd, omode)) {
1023 #else /* HAVE_FCHMOD */
1024 if (chmod(np, omode)) {
1025 #endif /* HAVE_FCHMOD */
1026 run_err("%s: set mode: %s",
1027 np, strerror(errno));
1031 if (!exists && omode != mode)
1033 if (fchmod(ofd, omode & ~mask)) {
1034 #else /* HAVE_FCHMOD */
1035 if (chmod(np, omode & ~mask)) {
1036 #endif /* HAVE_FCHMOD */
1037 run_err("%s: set mode: %s",
1038 np, strerror(errno));
1042 if (close(ofd) == -1) {
1047 if (setimes && wrerr == NO) {
1049 if (utimes(np, tv) < 0) {
1050 run_err("%s: set times: %s",
1051 np, strerror(errno));
1057 run_err("%s: %s", np, strerror(wrerrno));
1060 (void) atomicio(vwrite, remout, "", 1);
1067 run_err("protocol error: %s", why);
1074 char ch, *cp, resp, rbuf[2048];
1076 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1086 case 1: /* error, followed by error msg */
1087 case 2: /* fatal error, "" */
1089 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1092 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1095 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1107 (void) fprintf(stderr,
1108 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1109 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1110 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1115 run_err(const char *fmt,...)
1121 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1122 (void) fprintf(fp, "%c", 0x01);
1123 (void) fprintf(fp, "scp: ");
1125 (void) vfprintf(fp, fmt, ap);
1127 (void) fprintf(fp, "\n");
1133 vfprintf(stderr, fmt, ap);
1135 fprintf(stderr, "\n");
1144 if (!stat(cp, &stb)) {
1145 if (S_ISDIR(stb.st_mode))
1149 run_err("%s: %s", cp, strerror(errno));
1164 if (!isalpha(c) && !isdigit(c)) {
1179 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1184 allocbuf(BUF *bp, int fd, int blksize)
1187 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1190 if (fstat(fd, &stb) < 0) {
1191 run_err("fstat: %s", strerror(errno));
1194 size = roundup(stb.st_blksize, blksize);
1197 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1199 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1200 if (bp->cnt >= size)
1202 if (bp->buf == NULL)
1203 bp->buf = xmalloc(size);
1205 bp->buf = xrealloc(bp->buf, 1, size);
1206 memset(bp->buf, 0, size);
1215 write(STDERR_FILENO, "lost connection\n", 16);