2 * scp - secure remote copy. This is basically patched BSD rcp which
3 * uses ssh to do the data transfer (instead of using rcmd).
5 * NOTE: This version should NOT be suid root. (This uses ssh to
6 * do the transfer and ssh has the necessary privileges.)
8 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10 * As far as I am concerned, the code I have written for this software
11 * can be used freely for any purpose. Any derived versions of this
12 * software must be clearly marked as such, and if the derived work is
13 * incompatible with the protocol description in the RFC file, it must be
14 * called by a name other than "ssh" or "Secure Shell".
17 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18 * Copyright (c) 1999 Aaron Campbell. All rights reserved.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
29 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 * Copyright (c) 1983, 1990, 1992, 1993, 1995
45 * The Regents of the University of California. All rights reserved.
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
74 RCSID("$OpenBSD: scp.c,v 1.130 2006/01/31 10:35:43 djm Exp $");
78 #include "pathnames.h"
81 #include "progressmeter.h"
83 extern char *__progname;
87 /* Struct for addargs */
93 /* Name of current file being transferred. */
96 /* This is set to non-zero to enable verbose mode. */
99 /* This is set to zero if the progressmeter is not desired. */
100 int showprogress = 1;
102 /* This is the program to execute for the secured connection. ("ssh" or -S) */
103 char *ssh_program = _PATH_SSH_PROGRAM;
105 /* This is used to store the pid of ssh_program */
106 pid_t do_cmd_pid = -1;
111 if (do_cmd_pid > 1) {
112 kill(do_cmd_pid, signo ? signo : SIGTERM);
113 waitpid(do_cmd_pid, NULL, 0);
122 do_local_cmd(arglist *a)
129 fatal("do_local_cmd: no arguments");
132 fprintf(stderr, "Executing:");
133 for (i = 0; i < a->num; i++)
134 fprintf(stderr, " %s", a->list[i]);
135 fprintf(stderr, "\n");
137 if ((pid = fork()) == -1)
138 fatal("do_local_cmd: fork: %s", strerror(errno));
141 execvp(a->list[0], a->list);
147 signal(SIGTERM, killchild);
148 signal(SIGINT, killchild);
149 signal(SIGHUP, killchild);
151 while (waitpid(pid, &status, 0) == -1)
153 fatal("do_local_cmd: waitpid: %s", strerror(errno));
157 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
164 * This function executes the given command as the specified user on the
165 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
166 * assigns the input and output file descriptors on success.
170 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
172 int pin[2], pout[2], reserved[2];
176 "Executing: program %s host %s, user %s, command %s\n",
178 remuser ? remuser : "(unspecified)", cmd);
181 * Reserve two descriptors so that the real pipes won't get
182 * descriptors 0 and 1 because that will screw up dup2 below.
186 /* Create a socket pair for communicating with ssh. */
188 fatal("pipe: %s", strerror(errno));
190 fatal("pipe: %s", strerror(errno));
192 /* Free the reserved descriptors. */
196 /* Fork a child to execute the command on the remote host using ssh. */
198 if (do_cmd_pid == 0) {
207 replacearg(&args, 0, "%s", ssh_program);
209 addargs(&args, "-l%s", remuser);
210 addargs(&args, "%s", host);
211 addargs(&args, "%s", cmd);
213 execvp(ssh_program, args.list);
216 } else if (do_cmd_pid == -1) {
217 fatal("fork: %s", strerror(errno));
219 /* Parent. Close the other side, and return the local side. */
224 signal(SIGTERM, killchild);
225 signal(SIGINT, killchild);
226 signal(SIGHUP, killchild);
235 BUF *allocbuf(BUF *, int, int);
239 void run_err(const char *,...);
240 void verifydir(char *);
244 int errs, remin, remout;
245 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
248 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
251 void rsource(char *, struct stat *);
252 void sink(int, char *[]);
253 void source(int, char *[]);
254 void tolocal(int, char *[]);
255 void toremote(char *, int, char *[]);
259 main(int argc, char **argv)
261 int ch, fflag, tflag, status;
267 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
270 __progname = ssh_get_progname(argv[0]);
272 memset(&args, '\0', sizeof(args));
274 addargs(&args, "%s", ssh_program);
275 addargs(&args, "-x");
276 addargs(&args, "-oForwardAgent no");
277 addargs(&args, "-oPermitLocalCommand no");
278 addargs(&args, "-oClearAllForwardings yes");
281 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
283 /* User-visible flags. */
289 addargs(&args, "-%c", ch);
295 addargs(&args, "-%c%s", ch, optarg);
298 addargs(&args, "-p%s", optarg);
301 addargs(&args, "-oBatchmode yes");
304 speed = strtod(optarg, &endp);
305 if (speed <= 0 || *endp != '\0')
307 limit_rate = speed * 1024;
316 ssh_program = xstrdup(optarg);
319 addargs(&args, "-v");
323 addargs(&args, "-q");
327 /* Server options. */
329 targetshouldbedirectory = 1;
331 case 'f': /* "from" */
339 setmode(0, O_BINARY);
348 if ((pwd = getpwuid(userid = getuid())) == NULL)
349 fatal("unknown user %u", (u_int) userid);
351 if (!isatty(STDERR_FILENO))
354 remin = STDIN_FILENO;
355 remout = STDOUT_FILENO;
358 /* Follow "protocol", send data. */
371 targetshouldbedirectory = 1;
375 /* Command to be executed on remote system using "ssh". */
376 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
377 verbose_mode ? " -v" : "",
378 iamrecursive ? " -r" : "", pflag ? " -p" : "",
379 targetshouldbedirectory ? " -d" : "");
381 (void) signal(SIGPIPE, lostconn);
383 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
384 toremote(targ, argc, argv);
386 if (targetshouldbedirectory)
387 verifydir(argv[argc - 1]);
388 tolocal(argc, argv); /* Dest is local host. */
391 * Finally check the exit status of the ssh process, if one was forked
392 * and no error has occured yet
394 if (do_cmd_pid != -1 && errs == 0) {
398 (void) close(remout);
399 if (waitpid(do_cmd_pid, &status, 0) == -1)
402 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
410 toremote(char *targ, int argc, char **argv)
413 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
416 memset(&alist, '\0', sizeof(alist));
423 arg = xstrdup(argv[argc - 1]);
424 if ((thost = strrchr(arg, '@'))) {
435 if (tuser != NULL && !okname(tuser)) {
440 for (i = 0; i < argc - 1; i++) {
441 src = colon(argv[i]);
442 if (src) { /* remote to remote */
444 addargs(&alist, "%s", ssh_program);
446 addargs(&alist, "-v");
447 addargs(&alist, "-x");
448 addargs(&alist, "-oClearAllForwardings yes");
449 addargs(&alist, "-n");
454 host = strrchr(argv[i], '@');
458 host = cleanhostname(host);
461 suser = pwd->pw_name;
462 else if (!okname(suser))
464 addargs(&alist, "-l");
465 addargs(&alist, "%s", suser);
467 host = cleanhostname(argv[i]);
469 addargs(&alist, "%s", host);
470 addargs(&alist, "%s", cmd);
471 addargs(&alist, "%s", src);
472 addargs(&alist, "%s%s%s:%s",
473 tuser ? tuser : "", tuser ? "@" : "",
475 if (do_local_cmd(&alist) != 0)
477 } else { /* local to remote */
479 len = strlen(targ) + CMDNEEDS + 20;
481 (void) snprintf(bp, len, "%s -t %s", cmd, targ);
482 host = cleanhostname(thost);
483 if (do_cmd(host, tuser, bp, &remin,
496 tolocal(int argc, char **argv)
499 char *bp, *host, *src, *suser;
502 memset(&alist, '\0', sizeof(alist));
505 for (i = 0; i < argc - 1; i++) {
506 if (!(src = colon(argv[i]))) { /* Local to local. */
508 addargs(&alist, "%s", _PATH_CP);
510 addargs(&alist, "-r");
512 addargs(&alist, "-p");
513 addargs(&alist, "%s", argv[i]);
514 addargs(&alist, "%s", argv[argc-1]);
515 if (do_local_cmd(&alist))
522 if ((host = strrchr(argv[i], '@')) == NULL) {
529 suser = pwd->pw_name;
531 host = cleanhostname(host);
532 len = strlen(src) + CMDNEEDS + 20;
534 (void) snprintf(bp, len, "%s -f %s", cmd, src);
535 if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
541 sink(1, argv + argc - 1);
548 source(int argc, char **argv)
553 off_t i, amt, statbytes;
555 int fd = -1, haderr, indx;
556 char *last, *name, buf[2048];
559 for (indx = 0; indx < argc; ++indx) {
563 while (len > 1 && name[len-1] == '/')
565 if (strchr(name, '\n') != NULL) {
566 run_err("%s: skipping, filename contains a newline",
570 if ((fd = open(name, O_RDONLY, 0)) < 0)
572 if (fstat(fd, &stb) < 0) {
573 syserr: run_err("%s: %s", name, strerror(errno));
576 switch (stb.st_mode & S_IFMT) {
586 run_err("%s: not a regular file", name);
589 if ((last = strrchr(name, '/')) == NULL)
596 * Make it compatible with possible future
597 * versions expecting microseconds.
599 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
600 (u_long) stb.st_mtime,
601 (u_long) stb.st_atime);
602 (void) atomicio(vwrite, remout, buf, strlen(buf));
606 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
607 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
608 (u_int) (stb.st_mode & FILEMODEMASK),
609 (long long)stb.st_size, last);
611 fprintf(stderr, "Sending file modes: %s", buf);
613 (void) atomicio(vwrite, remout, buf, strlen(buf));
616 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
617 next: if (fd != -1) {
624 start_progress_meter(curfile, stb.st_size, &statbytes);
625 /* Keep writing after an error so that we stay sync'd up. */
626 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
628 if (i + amt > stb.st_size)
629 amt = stb.st_size - i;
631 result = atomicio(read, fd, bp->buf, amt);
636 (void) atomicio(vwrite, remout, bp->buf, amt);
638 result = atomicio(vwrite, remout, bp->buf, amt);
647 stop_progress_meter();
650 if (close(fd) < 0 && !haderr)
655 (void) atomicio(vwrite, remout, "", 1);
657 run_err("%s: %s", name, strerror(haderr));
663 rsource(char *name, struct stat *statp)
667 char *last, *vect[1], path[1100];
669 if (!(dirp = opendir(name))) {
670 run_err("%s: %s", name, strerror(errno));
673 last = strrchr(name, '/');
679 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
680 (u_long) statp->st_mtime,
681 (u_long) statp->st_atime);
682 (void) atomicio(vwrite, remout, path, strlen(path));
683 if (response() < 0) {
688 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
689 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
691 fprintf(stderr, "Entering directory: %s", path);
692 (void) atomicio(vwrite, remout, path, strlen(path));
693 if (response() < 0) {
697 while ((dp = readdir(dirp)) != NULL) {
700 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
702 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
703 run_err("%s/%s: name too long", name, dp->d_name);
706 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
710 (void) closedir(dirp);
711 (void) atomicio(vwrite, remout, "E\n", 2);
718 static struct timeval bwstart, bwend;
719 static int lamt, thresh = 16384;
721 struct timespec ts, rm;
723 if (!timerisset(&bwstart)) {
724 gettimeofday(&bwstart, NULL);
732 gettimeofday(&bwend, NULL);
733 timersub(&bwend, &bwstart, &bwend);
734 if (!timerisset(&bwend))
738 waitlen = (double)1000000L * lamt / limit_rate;
740 bwstart.tv_sec = waitlen / 1000000L;
741 bwstart.tv_usec = waitlen % 1000000L;
743 if (timercmp(&bwstart, &bwend, >)) {
744 timersub(&bwstart, &bwend, &bwend);
746 /* Adjust the wait time */
751 } else if (bwend.tv_usec < 100) {
757 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
758 while (nanosleep(&ts, &rm) == -1) {
766 gettimeofday(&bwstart, NULL);
770 sink(int argc, char **argv)
780 int amt, exists, first, mask, mode, ofd, omode;
781 off_t size, statbytes;
782 int setimes, targisdir, wrerrno = 0;
783 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
784 struct timeval tv[2];
788 #define SCREWUP(str) { why = str; goto screwup; }
790 setimes = targisdir = 0;
795 run_err("ambiguous target");
799 if (targetshouldbedirectory)
802 (void) atomicio(vwrite, remout, "", 1);
803 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
805 for (first = 1;; first = 0) {
807 if (atomicio(read, remin, cp, 1) != 1)
810 SCREWUP("unexpected <newline>");
812 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
813 SCREWUP("lost connection");
815 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
818 fprintf(stderr, "Sink: %s", buf);
820 if (buf[0] == '\01' || buf[0] == '\02') {
822 (void) atomicio(vwrite, STDERR_FILENO,
823 buf + 1, strlen(buf + 1));
830 (void) atomicio(vwrite, remout, "", 1);
840 mtime.tv_sec = strtol(cp, &cp, 10);
841 if (!cp || *cp++ != ' ')
842 SCREWUP("mtime.sec not delimited");
843 mtime.tv_usec = strtol(cp, &cp, 10);
844 if (!cp || *cp++ != ' ')
845 SCREWUP("mtime.usec not delimited");
846 atime.tv_sec = strtol(cp, &cp, 10);
847 if (!cp || *cp++ != ' ')
848 SCREWUP("atime.sec not delimited");
849 atime.tv_usec = strtol(cp, &cp, 10);
850 if (!cp || *cp++ != '\0')
851 SCREWUP("atime.usec not delimited");
852 (void) atomicio(vwrite, remout, "", 1);
855 if (*cp != 'C' && *cp != 'D') {
857 * Check for the case "rcp remote:foo\* local:bar".
858 * In this case, the line "No match." can be returned
859 * by the shell before the rcp command on the remote is
860 * executed so the ^Aerror_message convention isn't
867 SCREWUP("expected control record");
870 for (++cp; cp < buf + 5; cp++) {
871 if (*cp < '0' || *cp > '7')
873 mode = (mode << 3) | (*cp - '0');
876 SCREWUP("mode not delimited");
878 for (size = 0; isdigit(*cp);)
879 size = size * 10 + (*cp++ - '0');
881 SCREWUP("size not delimited");
882 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
883 run_err("error: unexpected filename: %s", cp);
887 static char *namebuf;
888 static size_t cursize;
891 need = strlen(targ) + strlen(cp) + 250;
892 if (need > cursize) {
895 namebuf = xmalloc(need);
898 (void) snprintf(namebuf, need, "%s%s%s", targ,
899 strcmp(targ, "/") ? "/" : "", cp);
904 exists = stat(np, &stb) == 0;
906 int mod_flag = pflag;
908 SCREWUP("received directory without -r");
910 if (!S_ISDIR(stb.st_mode)) {
915 (void) chmod(np, mode);
917 /* Handle copying from a read-only
920 if (mkdir(np, mode | S_IRWXU) < 0)
923 vect[0] = xstrdup(np);
927 if (utimes(vect[0], tv) < 0)
928 run_err("%s: set times: %s",
929 vect[0], strerror(errno));
932 (void) chmod(vect[0], mode);
939 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
940 bad: run_err("%s: %s", np, strerror(errno));
943 (void) atomicio(vwrite, remout, "", 1);
944 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
953 start_progress_meter(curfile, size, &statbytes);
954 for (count = i = 0; i < size; i += 4096) {
960 j = atomicio(read, remin, cp, amt);
962 run_err("%s", j ? strerror(errno) :
963 "dropped connection");
974 if (count == bp->cnt) {
975 /* Keep reading so we stay sync'd up. */
977 if (atomicio(vwrite, ofd, bp->buf,
988 stop_progress_meter();
989 if (count != 0 && wrerr == NO &&
990 atomicio(vwrite, ofd, bp->buf, count) != count) {
994 if (wrerr == NO && ftruncate(ofd, size) != 0) {
995 run_err("%s: truncate: %s", np, strerror(errno));
999 if (exists || omode != mode)
1001 if (fchmod(ofd, omode)) {
1002 #else /* HAVE_FCHMOD */
1003 if (chmod(np, omode)) {
1004 #endif /* HAVE_FCHMOD */
1005 run_err("%s: set mode: %s",
1006 np, strerror(errno));
1010 if (!exists && omode != mode)
1012 if (fchmod(ofd, omode & ~mask)) {
1013 #else /* HAVE_FCHMOD */
1014 if (chmod(np, omode & ~mask)) {
1015 #endif /* HAVE_FCHMOD */
1016 run_err("%s: set mode: %s",
1017 np, strerror(errno));
1021 if (close(ofd) == -1) {
1026 if (setimes && wrerr == NO) {
1028 if (utimes(np, tv) < 0) {
1029 run_err("%s: set times: %s",
1030 np, strerror(errno));
1036 run_err("%s: %s", np, strerror(wrerrno));
1039 (void) atomicio(vwrite, remout, "", 1);
1046 run_err("protocol error: %s", why);
1053 char ch, *cp, resp, rbuf[2048];
1055 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1065 case 1: /* error, followed by error msg */
1066 case 2: /* fatal error, "" */
1068 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1071 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1074 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1086 (void) fprintf(stderr,
1087 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1088 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1089 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1094 run_err(const char *fmt,...)
1100 if (fp == NULL && !(fp = fdopen(remout, "w")))
1102 (void) fprintf(fp, "%c", 0x01);
1103 (void) fprintf(fp, "scp: ");
1105 (void) vfprintf(fp, fmt, ap);
1107 (void) fprintf(fp, "\n");
1112 vfprintf(stderr, fmt, ap);
1114 fprintf(stderr, "\n");
1123 if (!stat(cp, &stb)) {
1124 if (S_ISDIR(stb.st_mode))
1128 run_err("%s: %s", cp, strerror(errno));
1143 if (!isalpha(c) && !isdigit(c)) {
1158 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1163 allocbuf(BUF *bp, int fd, int blksize)
1166 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1169 if (fstat(fd, &stb) < 0) {
1170 run_err("fstat: %s", strerror(errno));
1173 size = roundup(stb.st_blksize, blksize);
1176 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1178 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1179 if (bp->cnt >= size)
1181 if (bp->buf == NULL)
1182 bp->buf = xmalloc(size);
1184 bp->buf = xrealloc(bp->buf, size);
1185 memset(bp->buf, 0, size);
1194 write(STDERR_FILENO, "lost connection\n", 16);