1 /* $OpenBSD: scp.c,v 1.150 2006/07/22 20:48:23 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>
95 #include "pathnames.h"
98 #include "progressmeter.h"
100 extern char *__progname;
102 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
106 /* Struct for addargs */
109 /* Bandwidth limit */
110 off_t limit_rate = 0;
112 /* Name of current file being transferred. */
115 /* This is set to non-zero to enable verbose mode. */
116 int verbose_mode = 0;
118 /* This is set to zero if the progressmeter is not desired. */
119 int showprogress = 1;
121 /* This is the program to execute for the secured connection. ("ssh" or -S) */
122 char *ssh_program = _PATH_SSH_PROGRAM;
124 /* This is used to store the pid of ssh_program */
125 pid_t do_cmd_pid = -1;
130 if (do_cmd_pid > 1) {
131 kill(do_cmd_pid, signo ? signo : SIGTERM);
132 waitpid(do_cmd_pid, NULL, 0);
141 do_local_cmd(arglist *a)
148 fatal("do_local_cmd: no arguments");
151 fprintf(stderr, "Executing:");
152 for (i = 0; i < a->num; i++)
153 fprintf(stderr, " %s", a->list[i]);
154 fprintf(stderr, "\n");
156 if ((pid = fork()) == -1)
157 fatal("do_local_cmd: fork: %s", strerror(errno));
160 execvp(a->list[0], a->list);
166 signal(SIGTERM, killchild);
167 signal(SIGINT, killchild);
168 signal(SIGHUP, killchild);
170 while (waitpid(pid, &status, 0) == -1)
172 fatal("do_local_cmd: waitpid: %s", strerror(errno));
176 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
183 * This function executes the given command as the specified user on the
184 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
185 * assigns the input and output file descriptors on success.
189 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
191 int pin[2], pout[2], reserved[2];
195 "Executing: program %s host %s, user %s, command %s\n",
197 remuser ? remuser : "(unspecified)", cmd);
200 * Reserve two descriptors so that the real pipes won't get
201 * descriptors 0 and 1 because that will screw up dup2 below.
203 if (pipe(reserved) < 0)
204 fatal("pipe: %s", strerror(errno));
206 /* Create a socket pair for communicating with ssh. */
208 fatal("pipe: %s", strerror(errno));
210 fatal("pipe: %s", strerror(errno));
212 /* Free the reserved descriptors. */
216 /* Fork a child to execute the command on the remote host using ssh. */
218 if (do_cmd_pid == 0) {
227 replacearg(&args, 0, "%s", ssh_program);
229 addargs(&args, "-l%s", remuser);
230 addargs(&args, "%s", host);
231 addargs(&args, "%s", cmd);
233 execvp(ssh_program, args.list);
236 } else if (do_cmd_pid == -1) {
237 fatal("fork: %s", strerror(errno));
239 /* Parent. Close the other side, and return the local side. */
244 signal(SIGTERM, killchild);
245 signal(SIGINT, killchild);
246 signal(SIGHUP, killchild);
255 BUF *allocbuf(BUF *, int, int);
258 void run_err(const char *,...);
259 void verifydir(char *);
263 int errs, remin, remout;
264 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
267 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
270 void rsource(char *, struct stat *);
271 void sink(int, char *[]);
272 void source(int, char *[]);
273 void tolocal(int, char *[]);
274 void toremote(char *, int, char *[]);
278 main(int argc, char **argv)
280 int ch, fflag, tflag, status, n;
282 char *targ, *endp, **newargv;
286 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
289 /* Copy argv, because we modify it */
290 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
291 for (n = 0; n < argc; n++)
292 newargv[n] = xstrdup(argv[n]);
295 __progname = ssh_get_progname(argv[0]);
297 memset(&args, '\0', sizeof(args));
299 addargs(&args, "%s", ssh_program);
300 addargs(&args, "-x");
301 addargs(&args, "-oForwardAgent no");
302 addargs(&args, "-oPermitLocalCommand no");
303 addargs(&args, "-oClearAllForwardings yes");
306 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
308 /* User-visible flags. */
314 addargs(&args, "-%c", ch);
320 addargs(&args, "-%c%s", ch, optarg);
323 addargs(&args, "-p%s", optarg);
326 addargs(&args, "-oBatchmode yes");
329 speed = strtod(optarg, &endp);
330 if (speed <= 0 || *endp != '\0')
332 limit_rate = speed * 1024;
341 ssh_program = xstrdup(optarg);
344 addargs(&args, "-v");
348 addargs(&args, "-q");
352 /* Server options. */
354 targetshouldbedirectory = 1;
356 case 'f': /* "from" */
364 setmode(0, O_BINARY);
373 if ((pwd = getpwuid(userid = getuid())) == NULL)
374 fatal("unknown user %u", (u_int) userid);
376 if (!isatty(STDERR_FILENO))
379 remin = STDIN_FILENO;
380 remout = STDOUT_FILENO;
383 /* Follow "protocol", send data. */
396 targetshouldbedirectory = 1;
400 /* Command to be executed on remote system using "ssh". */
401 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
402 verbose_mode ? " -v" : "",
403 iamrecursive ? " -r" : "", pflag ? " -p" : "",
404 targetshouldbedirectory ? " -d" : "");
406 (void) signal(SIGPIPE, lostconn);
408 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
409 toremote(targ, argc, argv);
411 if (targetshouldbedirectory)
412 verifydir(argv[argc - 1]);
413 tolocal(argc, argv); /* Dest is local host. */
416 * Finally check the exit status of the ssh process, if one was forked
417 * and no error has occured yet
419 if (do_cmd_pid != -1 && errs == 0) {
423 (void) close(remout);
424 if (waitpid(do_cmd_pid, &status, 0) == -1)
427 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
435 toremote(char *targ, int argc, char **argv)
437 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
441 memset(&alist, '\0', sizeof(alist));
448 arg = xstrdup(argv[argc - 1]);
449 if ((thost = strrchr(arg, '@'))) {
460 if (tuser != NULL && !okname(tuser)) {
465 for (i = 0; i < argc - 1; i++) {
466 src = colon(argv[i]);
467 if (src) { /* remote to remote */
469 addargs(&alist, "%s", ssh_program);
471 addargs(&alist, "-v");
472 addargs(&alist, "-x");
473 addargs(&alist, "-oClearAllForwardings yes");
474 addargs(&alist, "-n");
479 host = strrchr(argv[i], '@');
483 host = cleanhostname(host);
486 suser = pwd->pw_name;
487 else if (!okname(suser))
489 addargs(&alist, "-l");
490 addargs(&alist, "%s", suser);
492 host = cleanhostname(argv[i]);
494 addargs(&alist, "%s", host);
495 addargs(&alist, "%s", cmd);
496 addargs(&alist, "%s", src);
497 addargs(&alist, "%s%s%s:%s",
498 tuser ? tuser : "", tuser ? "@" : "",
500 if (do_local_cmd(&alist) != 0)
502 } else { /* local to remote */
504 xasprintf(&bp, "%s -t %s", cmd, targ);
505 host = cleanhostname(thost);
506 if (do_cmd(host, tuser, bp, &remin,
520 tolocal(int argc, char **argv)
522 char *bp, *host, *src, *suser;
526 memset(&alist, '\0', sizeof(alist));
529 for (i = 0; i < argc - 1; i++) {
530 if (!(src = colon(argv[i]))) { /* Local to local. */
532 addargs(&alist, "%s", _PATH_CP);
534 addargs(&alist, "-r");
536 addargs(&alist, "-p");
537 addargs(&alist, "%s", argv[i]);
538 addargs(&alist, "%s", argv[argc-1]);
539 if (do_local_cmd(&alist))
546 if ((host = strrchr(argv[i], '@')) == NULL) {
553 suser = pwd->pw_name;
555 host = cleanhostname(host);
556 xasprintf(&bp, "%s -f %s", cmd, src);
557 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
563 sink(1, argv + argc - 1);
570 source(int argc, char **argv)
575 off_t i, amt, statbytes;
577 int fd = -1, haderr, indx;
578 char *last, *name, buf[2048];
581 for (indx = 0; indx < argc; ++indx) {
585 while (len > 1 && name[len-1] == '/')
587 if (strchr(name, '\n') != NULL) {
588 run_err("%s: skipping, filename contains a newline",
592 if ((fd = open(name, O_RDONLY, 0)) < 0)
594 if (fstat(fd, &stb) < 0) {
595 syserr: run_err("%s: %s", name, strerror(errno));
598 switch (stb.st_mode & S_IFMT) {
608 run_err("%s: not a regular file", name);
611 if ((last = strrchr(name, '/')) == NULL)
618 * Make it compatible with possible future
619 * versions expecting microseconds.
621 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
622 (u_long) stb.st_mtime,
623 (u_long) stb.st_atime);
624 (void) atomicio(vwrite, remout, buf, strlen(buf));
628 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
629 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
630 (u_int) (stb.st_mode & FILEMODEMASK),
631 (long long)stb.st_size, last);
633 fprintf(stderr, "Sending file modes: %s", buf);
635 (void) atomicio(vwrite, remout, buf, strlen(buf));
638 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
639 next: if (fd != -1) {
646 start_progress_meter(curfile, stb.st_size, &statbytes);
647 /* Keep writing after an error so that we stay sync'd up. */
648 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
650 if (i + amt > stb.st_size)
651 amt = stb.st_size - i;
653 result = atomicio(read, fd, bp->buf, amt);
658 (void) atomicio(vwrite, remout, bp->buf, amt);
660 result = atomicio(vwrite, remout, bp->buf, amt);
669 stop_progress_meter();
672 if (close(fd) < 0 && !haderr)
677 (void) atomicio(vwrite, remout, "", 1);
679 run_err("%s: %s", name, strerror(haderr));
685 rsource(char *name, struct stat *statp)
689 char *last, *vect[1], path[1100];
691 if (!(dirp = opendir(name))) {
692 run_err("%s: %s", name, strerror(errno));
695 last = strrchr(name, '/');
701 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
702 (u_long) statp->st_mtime,
703 (u_long) statp->st_atime);
704 (void) atomicio(vwrite, remout, path, strlen(path));
705 if (response() < 0) {
710 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
711 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
713 fprintf(stderr, "Entering directory: %s", path);
714 (void) atomicio(vwrite, remout, path, strlen(path));
715 if (response() < 0) {
719 while ((dp = readdir(dirp)) != NULL) {
722 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
724 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
725 run_err("%s/%s: name too long", name, dp->d_name);
728 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
732 (void) closedir(dirp);
733 (void) atomicio(vwrite, remout, "E\n", 2);
740 static struct timeval bwstart, bwend;
741 static int lamt, thresh = 16384;
743 struct timespec ts, rm;
745 if (!timerisset(&bwstart)) {
746 gettimeofday(&bwstart, NULL);
754 gettimeofday(&bwend, NULL);
755 timersub(&bwend, &bwstart, &bwend);
756 if (!timerisset(&bwend))
760 waitlen = (double)1000000L * lamt / limit_rate;
762 bwstart.tv_sec = waitlen / 1000000L;
763 bwstart.tv_usec = waitlen % 1000000L;
765 if (timercmp(&bwstart, &bwend, >)) {
766 timersub(&bwstart, &bwend, &bwend);
768 /* Adjust the wait time */
773 } else if (bwend.tv_usec < 100) {
779 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
780 while (nanosleep(&ts, &rm) == -1) {
788 gettimeofday(&bwstart, NULL);
792 sink(int argc, char **argv)
802 int amt, exists, first, ofd;
803 mode_t mode, omode, mask;
804 off_t size, statbytes;
805 int setimes, targisdir, wrerrno = 0;
806 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
807 struct timeval tv[2];
811 #define SCREWUP(str) { why = str; goto screwup; }
813 setimes = targisdir = 0;
818 run_err("ambiguous target");
822 if (targetshouldbedirectory)
825 (void) atomicio(vwrite, remout, "", 1);
826 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
828 for (first = 1;; first = 0) {
830 if (atomicio(read, remin, cp, 1) != 1)
833 SCREWUP("unexpected <newline>");
835 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
836 SCREWUP("lost connection");
838 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
841 fprintf(stderr, "Sink: %s", buf);
843 if (buf[0] == '\01' || buf[0] == '\02') {
845 (void) atomicio(vwrite, STDERR_FILENO,
846 buf + 1, strlen(buf + 1));
853 (void) atomicio(vwrite, remout, "", 1);
863 mtime.tv_sec = strtol(cp, &cp, 10);
864 if (!cp || *cp++ != ' ')
865 SCREWUP("mtime.sec not delimited");
866 mtime.tv_usec = strtol(cp, &cp, 10);
867 if (!cp || *cp++ != ' ')
868 SCREWUP("mtime.usec not delimited");
869 atime.tv_sec = strtol(cp, &cp, 10);
870 if (!cp || *cp++ != ' ')
871 SCREWUP("atime.sec not delimited");
872 atime.tv_usec = strtol(cp, &cp, 10);
873 if (!cp || *cp++ != '\0')
874 SCREWUP("atime.usec not delimited");
875 (void) atomicio(vwrite, remout, "", 1);
878 if (*cp != 'C' && *cp != 'D') {
880 * Check for the case "rcp remote:foo\* local:bar".
881 * In this case, the line "No match." can be returned
882 * by the shell before the rcp command on the remote is
883 * executed so the ^Aerror_message convention isn't
890 SCREWUP("expected control record");
893 for (++cp; cp < buf + 5; cp++) {
894 if (*cp < '0' || *cp > '7')
896 mode = (mode << 3) | (*cp - '0');
899 SCREWUP("mode not delimited");
901 for (size = 0; isdigit(*cp);)
902 size = size * 10 + (*cp++ - '0');
904 SCREWUP("size not delimited");
905 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
906 run_err("error: unexpected filename: %s", cp);
910 static char *namebuf;
911 static size_t cursize;
914 need = strlen(targ) + strlen(cp) + 250;
915 if (need > cursize) {
918 namebuf = xmalloc(need);
921 (void) snprintf(namebuf, need, "%s%s%s", targ,
922 strcmp(targ, "/") ? "/" : "", cp);
927 exists = stat(np, &stb) == 0;
929 int mod_flag = pflag;
931 SCREWUP("received directory without -r");
933 if (!S_ISDIR(stb.st_mode)) {
938 (void) chmod(np, mode);
940 /* Handle copying from a read-only
943 if (mkdir(np, mode | S_IRWXU) < 0)
946 vect[0] = xstrdup(np);
950 if (utimes(vect[0], tv) < 0)
951 run_err("%s: set times: %s",
952 vect[0], strerror(errno));
955 (void) chmod(vect[0], mode);
962 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
963 bad: run_err("%s: %s", np, strerror(errno));
966 (void) atomicio(vwrite, remout, "", 1);
967 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
976 start_progress_meter(curfile, size, &statbytes);
977 for (count = i = 0; i < size; i += 4096) {
983 j = atomicio(read, remin, cp, amt);
985 run_err("%s", j ? strerror(errno) :
986 "dropped connection");
997 if (count == bp->cnt) {
998 /* Keep reading so we stay sync'd up. */
1000 if (atomicio(vwrite, ofd, bp->buf,
1011 stop_progress_meter();
1012 if (count != 0 && wrerr == NO &&
1013 atomicio(vwrite, ofd, bp->buf, count) != count) {
1017 if (wrerr == NO && ftruncate(ofd, size) != 0) {
1018 run_err("%s: truncate: %s", np, strerror(errno));
1022 if (exists || omode != mode)
1024 if (fchmod(ofd, omode)) {
1025 #else /* HAVE_FCHMOD */
1026 if (chmod(np, omode)) {
1027 #endif /* HAVE_FCHMOD */
1028 run_err("%s: set mode: %s",
1029 np, strerror(errno));
1033 if (!exists && omode != mode)
1035 if (fchmod(ofd, omode & ~mask)) {
1036 #else /* HAVE_FCHMOD */
1037 if (chmod(np, omode & ~mask)) {
1038 #endif /* HAVE_FCHMOD */
1039 run_err("%s: set mode: %s",
1040 np, strerror(errno));
1044 if (close(ofd) == -1) {
1049 if (setimes && wrerr == NO) {
1051 if (utimes(np, tv) < 0) {
1052 run_err("%s: set times: %s",
1053 np, strerror(errno));
1059 run_err("%s: %s", np, strerror(wrerrno));
1062 (void) atomicio(vwrite, remout, "", 1);
1069 run_err("protocol error: %s", why);
1076 char ch, *cp, resp, rbuf[2048];
1078 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1088 case 1: /* error, followed by error msg */
1089 case 2: /* fatal error, "" */
1091 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1094 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1097 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1109 (void) fprintf(stderr,
1110 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1111 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1112 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1117 run_err(const char *fmt,...)
1123 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1124 (void) fprintf(fp, "%c", 0x01);
1125 (void) fprintf(fp, "scp: ");
1127 (void) vfprintf(fp, fmt, ap);
1129 (void) fprintf(fp, "\n");
1135 vfprintf(stderr, fmt, ap);
1137 fprintf(stderr, "\n");
1146 if (!stat(cp, &stb)) {
1147 if (S_ISDIR(stb.st_mode))
1151 run_err("%s: %s", cp, strerror(errno));
1166 if (!isalpha(c) && !isdigit(c)) {
1181 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1186 allocbuf(BUF *bp, int fd, int blksize)
1189 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1192 if (fstat(fd, &stb) < 0) {
1193 run_err("fstat: %s", strerror(errno));
1196 size = roundup(stb.st_blksize, blksize);
1199 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1201 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1202 if (bp->cnt >= size)
1204 if (bp->buf == NULL)
1205 bp->buf = xmalloc(size);
1207 bp->buf = xrealloc(bp->buf, 1, size);
1208 memset(bp->buf, 0, size);
1217 write(STDERR_FILENO, "lost connection\n", 16);