Annotation of src/usr.bin/ssh/scp.c, Revision 1.167
1.167 ! djm 1: /* $OpenBSD: scp.c,v 1.166 2010/07/01 13:06:59 millert Exp $ */
1.1 deraadt 2: /*
1.38 deraadt 3: * scp - secure remote copy. This is basically patched BSD rcp which
4: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 5: *
1.38 deraadt 6: * NOTE: This version should NOT be suid root. (This uses ssh to
7: * do the transfer and ssh has the necessary privileges.)
1.27 markus 8: *
1.38 deraadt 9: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10: *
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".
1.39 markus 16: */
1.38 deraadt 17: /*
1.60 deraadt 18: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 20: *
1.38 deraadt 21: * Redistribution and use in source and binary forms, with or without
22: * modification, are permitted provided that the following conditions
23: * are met:
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.
1.27 markus 29: *
1.38 deraadt 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.
40: */
1.1 deraadt 41:
42: /*
1.35 deraadt 43: * Parts from:
44: *
1.1 deraadt 45: * Copyright (c) 1983, 1990, 1992, 1993, 1995
46: * The Regents of the University of California. All rights reserved.
47: *
48: * Redistribution and use in source and binary forms, with or without
49: * modification, are permitted provided that the following conditions
50: * are met:
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.
1.103 millert 56: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 57: * may be used to endorse or promote products derived from this software
58: * without specific prior written permission.
59: *
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
70: * SUCH DAMAGE.
71: *
72: */
73:
1.155 deraadt 74: #include <sys/param.h>
1.132 stevesk 75: #include <sys/types.h>
1.161 djm 76: #include <sys/poll.h>
1.132 stevesk 77: #include <sys/wait.h>
1.134 stevesk 78: #include <sys/stat.h>
1.151 stevesk 79: #include <sys/time.h>
1.155 deraadt 80: #include <sys/uio.h>
1.131 stevesk 81:
1.135 stevesk 82: #include <ctype.h>
1.131 stevesk 83: #include <dirent.h>
1.147 stevesk 84: #include <errno.h>
1.144 stevesk 85: #include <fcntl.h>
1.143 stevesk 86: #include <pwd.h>
1.133 stevesk 87: #include <signal.h>
1.146 stevesk 88: #include <stdarg.h>
1.154 stevesk 89: #include <stdio.h>
1.153 stevesk 90: #include <stdlib.h>
1.150 stevesk 91: #include <string.h>
1.149 stevesk 92: #include <time.h>
1.148 stevesk 93: #include <unistd.h>
1.158 dtucker 94: #include <vis.h>
1.1 deraadt 95:
96: #include "xmalloc.h"
1.51 markus 97: #include "atomicio.h"
1.50 markus 98: #include "pathnames.h"
1.51 markus 99: #include "log.h"
1.69 mouring 100: #include "misc.h"
1.97 fgsch 101: #include "progressmeter.h"
1.1 deraadt 102:
1.161 djm 103: #define COPY_BUFLEN 16384
104:
1.140 deraadt 105: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
1.11 aaron 106:
1.70 mouring 107: /* Struct for addargs */
108: arglist args;
1.41 markus 109:
1.99 markus 110: /* Bandwidth limit */
1.167 ! djm 111: long long limit_kbps = 0;
! 112: struct bwlimit bwlimit;
1.99 markus 113:
1.11 aaron 114: /* Name of current file being transferred. */
115: char *curfile;
1.4 aaron 116:
1.1 deraadt 117: /* This is set to non-zero to enable verbose mode. */
1.17 markus 118: int verbose_mode = 0;
1.1 deraadt 119:
1.6 aaron 120: /* This is set to zero if the progressmeter is not desired. */
121: int showprogress = 1;
122:
1.34 deraadt 123: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 124: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 125:
1.92 markus 126: /* This is used to store the pid of ssh_program */
1.105 djm 127: pid_t do_cmd_pid = -1;
128:
129: static void
130: killchild(int signo)
131: {
1.119 dtucker 132: if (do_cmd_pid > 1) {
1.123 avsm 133: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 134: waitpid(do_cmd_pid, NULL, 0);
135: }
1.105 djm 136:
1.123 avsm 137: if (signo)
138: _exit(1);
139: exit(1);
1.105 djm 140: }
1.92 markus 141:
1.166 millert 142: static void
143: suspchild(int signo)
144: {
145: int status;
146:
147: if (do_cmd_pid > 1) {
148: kill(do_cmd_pid, signo);
149: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
150: errno == EINTR)
151: ;
152: kill(getpid(), SIGSTOP);
153: }
154: }
155:
1.129 djm 156: static int
157: do_local_cmd(arglist *a)
158: {
159: u_int i;
160: int status;
161: pid_t pid;
162:
163: if (a->num == 0)
164: fatal("do_local_cmd: no arguments");
165:
166: if (verbose_mode) {
167: fprintf(stderr, "Executing:");
168: for (i = 0; i < a->num; i++)
169: fprintf(stderr, " %s", a->list[i]);
170: fprintf(stderr, "\n");
171: }
172: if ((pid = fork()) == -1)
173: fatal("do_local_cmd: fork: %s", strerror(errno));
174:
175: if (pid == 0) {
176: execvp(a->list[0], a->list);
177: perror(a->list[0]);
178: exit(1);
179: }
180:
181: do_cmd_pid = pid;
182: signal(SIGTERM, killchild);
183: signal(SIGINT, killchild);
184: signal(SIGHUP, killchild);
185:
186: while (waitpid(pid, &status, 0) == -1)
187: if (errno != EINTR)
188: fatal("do_local_cmd: waitpid: %s", strerror(errno));
189:
190: do_cmd_pid = -1;
191:
192: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
193: return (-1);
194:
195: return (0);
196: }
197:
1.20 markus 198: /*
199: * This function executes the given command as the specified user on the
200: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
201: * assigns the input and output file descriptors on success.
202: */
1.1 deraadt 203:
1.27 markus 204: int
1.140 deraadt 205: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 206: {
1.18 markus 207: int pin[2], pout[2], reserved[2];
208:
209: if (verbose_mode)
1.78 deraadt 210: fprintf(stderr,
211: "Executing: program %s host %s, user %s, command %s\n",
212: ssh_program, host,
213: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 214:
1.20 markus 215: /*
216: * Reserve two descriptors so that the real pipes won't get
217: * descriptors 0 and 1 because that will screw up dup2 below.
218: */
1.142 markus 219: if (pipe(reserved) < 0)
220: fatal("pipe: %s", strerror(errno));
1.18 markus 221:
222: /* Create a socket pair for communicating with ssh. */
223: if (pipe(pin) < 0)
224: fatal("pipe: %s", strerror(errno));
225: if (pipe(pout) < 0)
226: fatal("pipe: %s", strerror(errno));
227:
228: /* Free the reserved descriptors. */
229: close(reserved[0]);
230: close(reserved[1]);
1.166 millert 231:
232: signal(SIGTSTP, suspchild);
233: signal(SIGTTIN, suspchild);
234: signal(SIGTTOU, suspchild);
1.18 markus 235:
1.106 nino 236: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 237: do_cmd_pid = fork();
238: if (do_cmd_pid == 0) {
1.18 markus 239: /* Child. */
240: close(pin[1]);
241: close(pout[0]);
242: dup2(pin[0], 0);
243: dup2(pout[1], 1);
244: close(pin[0]);
245: close(pout[1]);
246:
1.129 djm 247: replacearg(&args, 0, "%s", ssh_program);
1.165 guenther 248: if (remuser != NULL) {
249: addargs(&args, "-l");
250: addargs(&args, "%s", remuser);
251: }
252: addargs(&args, "--");
1.70 mouring 253: addargs(&args, "%s", host);
254: addargs(&args, "%s", cmd);
1.18 markus 255:
1.41 markus 256: execvp(ssh_program, args.list);
1.34 deraadt 257: perror(ssh_program);
1.18 markus 258: exit(1);
1.92 markus 259: } else if (do_cmd_pid == -1) {
260: fatal("fork: %s", strerror(errno));
1.18 markus 261: }
262: /* Parent. Close the other side, and return the local side. */
263: close(pin[0]);
264: *fdout = pin[1];
265: close(pout[1]);
266: *fdin = pout[0];
1.105 djm 267: signal(SIGTERM, killchild);
268: signal(SIGINT, killchild);
269: signal(SIGHUP, killchild);
1.18 markus 270: return 0;
1.1 deraadt 271: }
272:
273: typedef struct {
1.124 djm 274: size_t cnt;
1.1 deraadt 275: char *buf;
276: } BUF;
277:
1.18 markus 278: BUF *allocbuf(BUF *, int, int);
279: void lostconn(int);
280: int okname(char *);
281: void run_err(const char *,...);
282: void verifydir(char *);
1.1 deraadt 283:
284: struct passwd *pwd;
1.18 markus 285: uid_t userid;
1.1 deraadt 286: int errs, remin, remout;
287: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
288:
289: #define CMDNEEDS 64
290: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
291:
1.18 markus 292: int response(void);
293: void rsource(char *, struct stat *);
294: void sink(int, char *[]);
295: void source(int, char *[]);
296: void tolocal(int, char *[]);
297: void toremote(char *, int, char *[]);
298: void usage(void);
1.1 deraadt 299:
300: int
1.104 djm 301: main(int argc, char **argv)
1.1 deraadt 302: {
1.145 djm 303: int ch, fflag, tflag, status, n;
1.167 ! djm 304: char *targ, **newargv;
! 305: const char *errstr;
1.1 deraadt 306: extern char *optarg;
307: extern int optind;
1.126 djm 308:
309: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
310: sanitise_stdfd();
1.145 djm 311:
312: /* Copy argv, because we modify it */
313: newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
314: for (n = 0; n < argc; n++)
315: newargv[n] = xstrdup(argv[n]);
316: argv = newargv;
1.1 deraadt 317:
1.129 djm 318: memset(&args, '\0', sizeof(args));
1.41 markus 319: args.list = NULL;
1.129 djm 320: addargs(&args, "%s", ssh_program);
1.70 mouring 321: addargs(&args, "-x");
1.82 stevesk 322: addargs(&args, "-oForwardAgent no");
1.128 reyk 323: addargs(&args, "-oPermitLocalCommand no");
1.84 stevesk 324: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 325:
1.1 deraadt 326: fflag = tflag = 0;
1.100 markus 327: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
1.18 markus 328: switch (ch) {
329: /* User-visible flags. */
1.100 markus 330: case '1':
331: case '2':
1.23 markus 332: case '4':
1.41 markus 333: case '6':
334: case 'C':
1.70 mouring 335: addargs(&args, "-%c", ch);
1.41 markus 336: break;
337: case 'o':
338: case 'c':
339: case 'i':
1.83 stevesk 340: case 'F':
1.165 guenther 341: addargs(&args, "-%c", ch);
342: addargs(&args, "%s", optarg);
1.23 markus 343: break;
1.41 markus 344: case 'P':
1.165 guenther 345: addargs(&args, "-p");
346: addargs(&args, "%s", optarg);
1.41 markus 347: break;
348: case 'B':
1.70 mouring 349: addargs(&args, "-oBatchmode yes");
1.23 markus 350: break;
1.99 markus 351: case 'l':
1.167 ! djm 352: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
! 353: &errstr);
! 354: if (errstr != NULL)
1.99 markus 355: usage();
1.167 ! djm 356: limit_kbps *= 1024; /* kbps */
! 357: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 358: break;
1.1 deraadt 359: case 'p':
360: pflag = 1;
361: break;
362: case 'r':
363: iamrecursive = 1;
364: break;
1.34 deraadt 365: case 'S':
1.41 markus 366: ssh_program = xstrdup(optarg);
367: break;
368: case 'v':
1.72 markus 369: addargs(&args, "-v");
1.41 markus 370: verbose_mode = 1;
371: break;
372: case 'q':
1.111 dtucker 373: addargs(&args, "-q");
1.41 markus 374: showprogress = 0;
1.34 deraadt 375: break;
376:
1.18 markus 377: /* Server options. */
1.1 deraadt 378: case 'd':
379: targetshouldbedirectory = 1;
380: break;
1.18 markus 381: case 'f': /* "from" */
1.1 deraadt 382: iamremote = 1;
383: fflag = 1;
384: break;
1.18 markus 385: case 't': /* "to" */
1.1 deraadt 386: iamremote = 1;
387: tflag = 1;
388: break;
389: default:
390: usage();
391: }
392: argc -= optind;
393: argv += optind;
394:
395: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 396: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 397:
1.156 djm 398: if (!isatty(STDOUT_FILENO))
1.7 deraadt 399: showprogress = 0;
400:
1.1 deraadt 401: remin = STDIN_FILENO;
402: remout = STDOUT_FILENO;
403:
1.52 stevesk 404: if (fflag) {
1.18 markus 405: /* Follow "protocol", send data. */
406: (void) response();
1.1 deraadt 407: source(argc, argv);
408: exit(errs != 0);
409: }
1.18 markus 410: if (tflag) {
411: /* Receive data. */
1.1 deraadt 412: sink(argc, argv);
413: exit(errs != 0);
414: }
415: if (argc < 2)
416: usage();
417: if (argc > 2)
418: targetshouldbedirectory = 1;
419:
420: remin = remout = -1;
1.92 markus 421: do_cmd_pid = -1;
1.1 deraadt 422: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 423: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
424: verbose_mode ? " -v" : "",
1.35 deraadt 425: iamrecursive ? " -r" : "", pflag ? " -p" : "",
426: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 427:
1.18 markus 428: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 429:
430: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
431: toremote(targ, argc, argv);
432: else {
433: if (targetshouldbedirectory)
434: verifydir(argv[argc - 1]);
1.130 djm 435: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 436: }
437: /*
438: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 439: * and no error has occurred yet
1.92 markus 440: */
441: if (do_cmd_pid != -1 && errs == 0) {
442: if (remin != -1)
443: (void) close(remin);
444: if (remout != -1)
445: (void) close(remout);
446: if (waitpid(do_cmd_pid, &status, 0) == -1)
447: errs = 1;
448: else {
449: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
450: errs = 1;
451: }
1.1 deraadt 452: }
453: exit(errs != 0);
454: }
455:
1.167 ! djm 456: /* Callback from atomicio6 to update progress meter and limit bandwidth */
! 457: static int
! 458: scpio(void *_cnt, size_t s)
1.161 djm 459: {
1.167 ! djm 460: off_t *cnt = (off_t *)_cnt;
! 461:
! 462: *cnt += s;
! 463: if (limit_kbps > 0)
! 464: bandwidth_limit(&bwlimit, s);
! 465: return 0;
1.161 djm 466: }
467:
1.1 deraadt 468: void
1.104 djm 469: toremote(char *targ, int argc, char **argv)
1.1 deraadt 470: {
1.120 deraadt 471: char *bp, *host, *src, *suser, *thost, *tuser, *arg;
1.129 djm 472: arglist alist;
1.140 deraadt 473: int i;
1.129 djm 474:
475: memset(&alist, '\0', sizeof(alist));
476: alist.list = NULL;
1.1 deraadt 477:
478: *targ++ = 0;
479: if (*targ == 0)
480: targ = ".";
481:
1.121 djm 482: arg = xstrdup(argv[argc - 1]);
1.120 deraadt 483: if ((thost = strrchr(arg, '@'))) {
1.1 deraadt 484: /* user@host */
485: *thost++ = 0;
1.120 deraadt 486: tuser = arg;
1.1 deraadt 487: if (*tuser == '\0')
488: tuser = NULL;
489: } else {
1.120 deraadt 490: thost = arg;
1.1 deraadt 491: tuser = NULL;
492: }
493:
1.129 djm 494: if (tuser != NULL && !okname(tuser)) {
495: xfree(arg);
496: return;
497: }
498:
1.1 deraadt 499: for (i = 0; i < argc - 1; i++) {
500: src = colon(argv[i]);
1.18 markus 501: if (src) { /* remote to remote */
1.129 djm 502: freeargs(&alist);
503: addargs(&alist, "%s", ssh_program);
504: if (verbose_mode)
505: addargs(&alist, "-v");
506: addargs(&alist, "-x");
507: addargs(&alist, "-oClearAllForwardings yes");
508: addargs(&alist, "-n");
509:
1.1 deraadt 510: *src++ = 0;
511: if (*src == 0)
512: src = ".";
1.94 markus 513: host = strrchr(argv[i], '@');
1.129 djm 514:
1.1 deraadt 515: if (host) {
516: *host++ = 0;
1.23 markus 517: host = cleanhostname(host);
1.1 deraadt 518: suser = argv[i];
519: if (*suser == '\0')
520: suser = pwd->pw_name;
1.129 djm 521: else if (!okname(suser))
1.101 markus 522: continue;
1.129 djm 523: addargs(&alist, "-l");
524: addargs(&alist, "%s", suser);
1.23 markus 525: } else {
526: host = cleanhostname(argv[i]);
527: }
1.165 guenther 528: addargs(&alist, "--");
1.129 djm 529: addargs(&alist, "%s", host);
530: addargs(&alist, "%s", cmd);
531: addargs(&alist, "%s", src);
532: addargs(&alist, "%s%s%s:%s",
533: tuser ? tuser : "", tuser ? "@" : "",
534: thost, targ);
535: if (do_local_cmd(&alist) != 0)
1.109 markus 536: errs = 1;
1.18 markus 537: } else { /* local to remote */
1.1 deraadt 538: if (remin == -1) {
1.165 guenther 539: xasprintf(&bp, "%s -t -- %s", cmd, targ);
1.23 markus 540: host = cleanhostname(thost);
1.35 deraadt 541: if (do_cmd(host, tuser, bp, &remin,
1.140 deraadt 542: &remout) < 0)
1.18 markus 543: exit(1);
1.1 deraadt 544: if (response() < 0)
545: exit(1);
1.18 markus 546: (void) xfree(bp);
1.1 deraadt 547: }
1.18 markus 548: source(1, argv + i);
1.1 deraadt 549: }
550: }
1.142 markus 551: xfree(arg);
1.1 deraadt 552: }
553:
554: void
1.104 djm 555: tolocal(int argc, char **argv)
1.1 deraadt 556: {
557: char *bp, *host, *src, *suser;
1.129 djm 558: arglist alist;
1.140 deraadt 559: int i;
1.129 djm 560:
561: memset(&alist, '\0', sizeof(alist));
562: alist.list = NULL;
1.1 deraadt 563:
564: for (i = 0; i < argc - 1; i++) {
1.18 markus 565: if (!(src = colon(argv[i]))) { /* Local to local. */
1.129 djm 566: freeargs(&alist);
567: addargs(&alist, "%s", _PATH_CP);
568: if (iamrecursive)
569: addargs(&alist, "-r");
570: if (pflag)
571: addargs(&alist, "-p");
1.165 guenther 572: addargs(&alist, "--");
1.129 djm 573: addargs(&alist, "%s", argv[i]);
574: addargs(&alist, "%s", argv[argc-1]);
575: if (do_local_cmd(&alist))
1.1 deraadt 576: ++errs;
577: continue;
578: }
579: *src++ = 0;
580: if (*src == 0)
581: src = ".";
1.94 markus 582: if ((host = strrchr(argv[i], '@')) == NULL) {
1.1 deraadt 583: host = argv[i];
584: suser = NULL;
585: } else {
586: *host++ = 0;
587: suser = argv[i];
588: if (*suser == '\0')
589: suser = pwd->pw_name;
590: }
1.23 markus 591: host = cleanhostname(host);
1.165 guenther 592: xasprintf(&bp, "%s -f -- %s", cmd, src);
1.140 deraadt 593: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
1.18 markus 594: (void) xfree(bp);
595: ++errs;
596: continue;
1.1 deraadt 597: }
1.18 markus 598: xfree(bp);
1.1 deraadt 599: sink(1, argv + argc - 1);
1.18 markus 600: (void) close(remin);
1.1 deraadt 601: remin = remout = -1;
602: }
603: }
604:
605: void
1.104 djm 606: source(int argc, char **argv)
1.1 deraadt 607: {
608: struct stat stb;
609: static BUF buffer;
610: BUF *bp;
1.163 dtucker 611: off_t i, statbytes;
612: size_t amt;
1.125 dtucker 613: int fd = -1, haderr, indx;
1.158 dtucker 614: char *last, *name, buf[2048], encname[MAXPATHLEN];
1.65 deraadt 615: int len;
1.1 deraadt 616:
617: for (indx = 0; indx < argc; ++indx) {
1.18 markus 618: name = argv[indx];
1.11 aaron 619: statbytes = 0;
1.65 deraadt 620: len = strlen(name);
621: while (len > 1 && name[len-1] == '/')
622: name[--len] = '\0';
1.158 dtucker 623: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
624: goto syserr;
1.85 markus 625: if (strchr(name, '\n') != NULL) {
1.158 dtucker 626: strnvis(encname, name, sizeof(encname), VIS_NL);
627: name = encname;
1.85 markus 628: }
1.1 deraadt 629: if (fstat(fd, &stb) < 0) {
630: syserr: run_err("%s: %s", name, strerror(errno));
631: goto next;
632: }
1.163 dtucker 633: if (stb.st_size < 0) {
634: run_err("%s: %s", name, "Negative file size");
635: goto next;
636: }
1.157 djm 637: unset_nonblock(fd);
1.1 deraadt 638: switch (stb.st_mode & S_IFMT) {
639: case S_IFREG:
640: break;
641: case S_IFDIR:
642: if (iamrecursive) {
643: rsource(name, &stb);
644: goto next;
645: }
646: /* FALLTHROUGH */
647: default:
648: run_err("%s: not a regular file", name);
649: goto next;
650: }
651: if ((last = strrchr(name, '/')) == NULL)
652: last = name;
653: else
654: ++last;
1.11 aaron 655: curfile = last;
1.1 deraadt 656: if (pflag) {
657: /*
658: * Make it compatible with possible future
659: * versions expecting microseconds.
660: */
1.55 deraadt 661: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.162 dtucker 662: (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
663: (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
664: if (verbose_mode) {
665: fprintf(stderr, "File mtime %ld atime %ld\n",
666: (long)stb.st_mtime, (long)stb.st_atime);
667: fprintf(stderr, "Sending file timestamps: %s",
668: buf);
669: }
1.107 deraadt 670: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 671: if (response() < 0)
672: goto next;
673: }
674: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 675: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 676: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 677: (long long)stb.st_size, last);
1.18 markus 678: if (verbose_mode) {
679: fprintf(stderr, "Sending file modes: %s", buf);
680: }
1.107 deraadt 681: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 682: if (response() < 0)
683: goto next;
1.161 djm 684: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 685: next: if (fd != -1) {
686: (void) close(fd);
687: fd = -1;
688: }
1.1 deraadt 689: continue;
690: }
1.97 fgsch 691: if (showprogress)
692: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 693: set_nonblock(remout);
1.1 deraadt 694: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
695: amt = bp->cnt;
1.163 dtucker 696: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 697: amt = stb.st_size - i;
698: if (!haderr) {
1.161 djm 699: if (atomicio(read, fd, bp->buf, amt) != amt)
1.122 avsm 700: haderr = errno;
1.1 deraadt 701: }
1.161 djm 702: /* Keep writing after error to retain sync */
703: if (haderr) {
704: (void)atomicio(vwrite, remout, bp->buf, amt);
705: continue;
1.1 deraadt 706: }
1.167 ! djm 707: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 708: &statbytes) != amt)
709: haderr = errno;
1.1 deraadt 710: }
1.161 djm 711: unset_nonblock(remout);
1.18 markus 712: if (showprogress)
1.97 fgsch 713: stop_progress_meter();
1.4 aaron 714:
1.127 deraadt 715: if (fd != -1) {
716: if (close(fd) < 0 && !haderr)
717: haderr = errno;
718: fd = -1;
719: }
1.1 deraadt 720: if (!haderr)
1.107 deraadt 721: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 722: else
723: run_err("%s: %s", name, strerror(haderr));
1.18 markus 724: (void) response();
1.1 deraadt 725: }
726: }
727:
728: void
1.104 djm 729: rsource(char *name, struct stat *statp)
1.1 deraadt 730: {
731: DIR *dirp;
732: struct dirent *dp;
733: char *last, *vect[1], path[1100];
734:
735: if (!(dirp = opendir(name))) {
736: run_err("%s: %s", name, strerror(errno));
737: return;
738: }
739: last = strrchr(name, '/');
740: if (last == 0)
741: last = name;
742: else
743: last++;
744: if (pflag) {
1.55 deraadt 745: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 746: (u_long) statp->st_mtime,
747: (u_long) statp->st_atime);
1.107 deraadt 748: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 749: if (response() < 0) {
750: closedir(dirp);
751: return;
752: }
753: }
1.55 deraadt 754: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 755: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 756: if (verbose_mode)
757: fprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 758: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 759: if (response() < 0) {
760: closedir(dirp);
761: return;
762: }
1.63 stevesk 763: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 764: if (dp->d_ino == 0)
765: continue;
766: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
767: continue;
768: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
769: run_err("%s/%s: name too long", name, dp->d_name);
770: continue;
771: }
1.55 deraadt 772: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 773: vect[0] = path;
774: source(1, vect);
775: }
1.18 markus 776: (void) closedir(dirp);
1.107 deraadt 777: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 778: (void) response();
1.1 deraadt 779: }
780:
781: void
1.104 djm 782: sink(int argc, char **argv)
1.1 deraadt 783: {
784: static BUF buffer;
785: struct stat stb;
1.18 markus 786: enum {
787: YES, NO, DISPLAYED
788: } wrerr;
1.1 deraadt 789: BUF *bp;
1.122 avsm 790: off_t i;
1.124 djm 791: size_t j, count;
1.140 deraadt 792: int amt, exists, first, ofd;
793: mode_t mode, omode, mask;
1.97 fgsch 794: off_t size, statbytes;
1.36 deraadt 795: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 796: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 797: struct timeval tv[2];
1.1 deraadt 798:
1.66 stevesk 799: #define atime tv[0]
800: #define mtime tv[1]
1.118 deraadt 801: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 802:
803: setimes = targisdir = 0;
804: mask = umask(0);
805: if (!pflag)
1.18 markus 806: (void) umask(mask);
1.1 deraadt 807: if (argc != 1) {
808: run_err("ambiguous target");
809: exit(1);
810: }
811: targ = *argv;
812: if (targetshouldbedirectory)
813: verifydir(targ);
1.18 markus 814:
1.107 deraadt 815: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 816: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
817: targisdir = 1;
818: for (first = 1;; first = 0) {
819: cp = buf;
1.122 avsm 820: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 821: return;
822: if (*cp++ == '\n')
823: SCREWUP("unexpected <newline>");
824: do {
1.30 deraadt 825: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 826: SCREWUP("lost connection");
827: *cp++ = ch;
828: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
829: *cp = 0;
1.114 markus 830: if (verbose_mode)
831: fprintf(stderr, "Sink: %s", buf);
1.1 deraadt 832:
833: if (buf[0] == '\01' || buf[0] == '\02') {
834: if (iamremote == 0)
1.107 deraadt 835: (void) atomicio(vwrite, STDERR_FILENO,
1.44 deraadt 836: buf + 1, strlen(buf + 1));
1.1 deraadt 837: if (buf[0] == '\02')
838: exit(1);
839: ++errs;
840: continue;
841: }
842: if (buf[0] == 'E') {
1.107 deraadt 843: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 844: return;
845: }
846: if (ch == '\n')
847: *--cp = 0;
848:
849: cp = buf;
850: if (*cp == 'T') {
851: setimes++;
852: cp++;
1.66 stevesk 853: mtime.tv_sec = strtol(cp, &cp, 10);
854: if (!cp || *cp++ != ' ')
1.1 deraadt 855: SCREWUP("mtime.sec not delimited");
1.66 stevesk 856: mtime.tv_usec = strtol(cp, &cp, 10);
857: if (!cp || *cp++ != ' ')
1.1 deraadt 858: SCREWUP("mtime.usec not delimited");
1.66 stevesk 859: atime.tv_sec = strtol(cp, &cp, 10);
860: if (!cp || *cp++ != ' ')
1.1 deraadt 861: SCREWUP("atime.sec not delimited");
1.66 stevesk 862: atime.tv_usec = strtol(cp, &cp, 10);
863: if (!cp || *cp++ != '\0')
1.1 deraadt 864: SCREWUP("atime.usec not delimited");
1.107 deraadt 865: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 866: continue;
867: }
868: if (*cp != 'C' && *cp != 'D') {
869: /*
870: * Check for the case "rcp remote:foo\* local:bar".
871: * In this case, the line "No match." can be returned
872: * by the shell before the rcp command on the remote is
873: * executed so the ^Aerror_message convention isn't
874: * followed.
875: */
876: if (first) {
877: run_err("%s", cp);
878: exit(1);
879: }
880: SCREWUP("expected control record");
881: }
882: mode = 0;
883: for (++cp; cp < buf + 5; cp++) {
884: if (*cp < '0' || *cp > '7')
885: SCREWUP("bad mode");
886: mode = (mode << 3) | (*cp - '0');
887: }
888: if (*cp++ != ' ')
889: SCREWUP("mode not delimited");
890:
1.63 stevesk 891: for (size = 0; isdigit(*cp);)
1.1 deraadt 892: size = size * 10 + (*cp++ - '0');
893: if (*cp++ != ' ')
894: SCREWUP("size not delimited");
1.114 markus 895: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
896: run_err("error: unexpected filename: %s", cp);
897: exit(1);
898: }
1.1 deraadt 899: if (targisdir) {
900: static char *namebuf;
1.124 djm 901: static size_t cursize;
1.1 deraadt 902: size_t need;
903:
904: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 905: if (need > cursize) {
1.58 danh 906: if (namebuf)
907: xfree(namebuf);
1.18 markus 908: namebuf = xmalloc(need);
1.55 deraadt 909: cursize = need;
910: }
911: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 912: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 913: np = namebuf;
914: } else
915: np = targ;
1.12 aaron 916: curfile = cp;
1.1 deraadt 917: exists = stat(np, &stb) == 0;
918: if (buf[0] == 'D') {
919: int mod_flag = pflag;
1.114 markus 920: if (!iamrecursive)
921: SCREWUP("received directory without -r");
1.1 deraadt 922: if (exists) {
923: if (!S_ISDIR(stb.st_mode)) {
924: errno = ENOTDIR;
925: goto bad;
926: }
927: if (pflag)
1.18 markus 928: (void) chmod(np, mode);
1.1 deraadt 929: } else {
1.18 markus 930: /* Handle copying from a read-only
931: directory */
1.1 deraadt 932: mod_flag = 1;
933: if (mkdir(np, mode | S_IRWXU) < 0)
934: goto bad;
935: }
1.58 danh 936: vect[0] = xstrdup(np);
1.1 deraadt 937: sink(1, vect);
938: if (setimes) {
939: setimes = 0;
1.59 deraadt 940: if (utimes(vect[0], tv) < 0)
1.18 markus 941: run_err("%s: set times: %s",
1.59 deraadt 942: vect[0], strerror(errno));
1.1 deraadt 943: }
944: if (mod_flag)
1.59 deraadt 945: (void) chmod(vect[0], mode);
946: if (vect[0])
947: xfree(vect[0]);
1.1 deraadt 948: continue;
949: }
950: omode = mode;
951: mode |= S_IWRITE;
1.71 markus 952: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 953: bad: run_err("%s: %s", np, strerror(errno));
954: continue;
955: }
1.107 deraadt 956: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 957: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 958: (void) close(ofd);
1.1 deraadt 959: continue;
960: }
961: cp = bp->buf;
962: wrerr = NO;
1.7 deraadt 963:
1.12 aaron 964: statbytes = 0;
1.97 fgsch 965: if (showprogress)
966: start_progress_meter(curfile, size, &statbytes);
1.161 djm 967: set_nonblock(remin);
968: for (count = i = 0; i < size; i += bp->cnt) {
969: amt = bp->cnt;
1.1 deraadt 970: if (i + amt > size)
971: amt = size - i;
972: count += amt;
973: do {
1.167 ! djm 974: j = atomicio6(read, remin, cp, amt,
! 975: scpio, &statbytes);
1.122 avsm 976: if (j == 0) {
1.161 djm 977: run_err("%s", j != EPIPE ?
978: strerror(errno) :
1.63 stevesk 979: "dropped connection");
1.1 deraadt 980: exit(1);
981: }
982: amt -= j;
983: cp += j;
984: } while (amt > 0);
1.112 djm 985:
1.1 deraadt 986: if (count == bp->cnt) {
987: /* Keep reading so we stay sync'd up. */
988: if (wrerr == NO) {
1.122 avsm 989: if (atomicio(vwrite, ofd, bp->buf,
990: count) != count) {
1.1 deraadt 991: wrerr = YES;
1.122 avsm 992: wrerrno = errno;
1.1 deraadt 993: }
994: }
995: count = 0;
996: cp = bp->buf;
997: }
998: }
1.161 djm 999: unset_nonblock(remin);
1.7 deraadt 1000: if (showprogress)
1.97 fgsch 1001: stop_progress_meter();
1.1 deraadt 1002: if (count != 0 && wrerr == NO &&
1.122 avsm 1003: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1004: wrerr = YES;
1.122 avsm 1005: wrerrno = errno;
1.1 deraadt 1006: }
1.159 djm 1007: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1008: ftruncate(ofd, size) != 0) {
1.1 deraadt 1009: run_err("%s: truncate: %s", np, strerror(errno));
1010: wrerr = DISPLAYED;
1011: }
1012: if (pflag) {
1013: if (exists || omode != mode)
1.116 dtucker 1014: if (fchmod(ofd, omode)) {
1.1 deraadt 1015: run_err("%s: set mode: %s",
1.63 stevesk 1016: np, strerror(errno));
1.116 dtucker 1017: wrerr = DISPLAYED;
1018: }
1.1 deraadt 1019: } else {
1020: if (!exists && omode != mode)
1.116 dtucker 1021: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1022: run_err("%s: set mode: %s",
1.63 stevesk 1023: np, strerror(errno));
1.116 dtucker 1024: wrerr = DISPLAYED;
1025: }
1.1 deraadt 1026: }
1.33 provos 1027: if (close(ofd) == -1) {
1028: wrerr = YES;
1029: wrerrno = errno;
1030: }
1.18 markus 1031: (void) response();
1.1 deraadt 1032: if (setimes && wrerr == NO) {
1033: setimes = 0;
1.40 markus 1034: if (utimes(np, tv) < 0) {
1.1 deraadt 1035: run_err("%s: set times: %s",
1.63 stevesk 1036: np, strerror(errno));
1.1 deraadt 1037: wrerr = DISPLAYED;
1038: }
1039: }
1.18 markus 1040: switch (wrerr) {
1.1 deraadt 1041: case YES:
1042: run_err("%s: %s", np, strerror(wrerrno));
1043: break;
1044: case NO:
1.107 deraadt 1045: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1046: break;
1047: case DISPLAYED:
1048: break;
1049: }
1050: }
1051: screwup:
1052: run_err("protocol error: %s", why);
1053: exit(1);
1054: }
1055:
1056: int
1.86 itojun 1057: response(void)
1.1 deraadt 1058: {
1059: char ch, *cp, resp, rbuf[2048];
1060:
1.30 deraadt 1061: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1062: lostconn(0);
1063:
1064: cp = rbuf;
1.18 markus 1065: switch (resp) {
1066: case 0: /* ok */
1.1 deraadt 1067: return (0);
1068: default:
1069: *cp++ = resp;
1070: /* FALLTHROUGH */
1.18 markus 1071: case 1: /* error, followed by error msg */
1072: case 2: /* fatal error, "" */
1.1 deraadt 1073: do {
1.30 deraadt 1074: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1075: lostconn(0);
1076: *cp++ = ch;
1077: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1078:
1079: if (!iamremote)
1.107 deraadt 1080: (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 1081: ++errs;
1082: if (resp == 1)
1083: return (-1);
1084: exit(1);
1085: }
1086: /* NOTREACHED */
1087: }
1088:
1089: void
1.86 itojun 1090: usage(void)
1.1 deraadt 1091: {
1.83 stevesk 1092: (void) fprintf(stderr,
1.110 jmc 1093: "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1094: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1095: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1096: exit(1);
1097: }
1098:
1099: void
1.18 markus 1100: run_err(const char *fmt,...)
1.1 deraadt 1101: {
1102: static FILE *fp;
1103: va_list ap;
1104:
1105: ++errs;
1.136 biorn 1106: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1107: (void) fprintf(fp, "%c", 0x01);
1108: (void) fprintf(fp, "scp: ");
1109: va_start(ap, fmt);
1110: (void) vfprintf(fp, fmt, ap);
1111: va_end(ap);
1112: (void) fprintf(fp, "\n");
1113: (void) fflush(fp);
1114: }
1.18 markus 1115:
1116: if (!iamremote) {
1.73 markus 1117: va_start(ap, fmt);
1.18 markus 1118: vfprintf(stderr, fmt, ap);
1.73 markus 1119: va_end(ap);
1.18 markus 1120: fprintf(stderr, "\n");
1121: }
1.1 deraadt 1122: }
1123:
1124: void
1.104 djm 1125: verifydir(char *cp)
1.1 deraadt 1126: {
1127: struct stat stb;
1128:
1129: if (!stat(cp, &stb)) {
1130: if (S_ISDIR(stb.st_mode))
1131: return;
1132: errno = ENOTDIR;
1133: }
1134: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1135: killchild(0);
1.1 deraadt 1136: }
1137:
1138: int
1.104 djm 1139: okname(char *cp0)
1.1 deraadt 1140: {
1141: int c;
1142: char *cp;
1143:
1144: cp = cp0;
1145: do {
1.75 deraadt 1146: c = (int)*cp;
1.1 deraadt 1147: if (c & 0200)
1148: goto bad;
1.101 markus 1149: if (!isalpha(c) && !isdigit(c)) {
1150: switch (c) {
1151: case '\'':
1152: case '"':
1153: case '`':
1154: case ' ':
1155: case '#':
1156: goto bad;
1157: default:
1158: break;
1159: }
1160: }
1.1 deraadt 1161: } while (*++cp);
1162: return (1);
1163:
1.25 markus 1164: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1165: return (0);
1166: }
1167:
1168: BUF *
1.104 djm 1169: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1170: {
1171: size_t size;
1172: struct stat stb;
1173:
1174: if (fstat(fd, &stb) < 0) {
1175: run_err("fstat: %s", strerror(errno));
1176: return (0);
1177: }
1.95 markus 1178: size = roundup(stb.st_blksize, blksize);
1179: if (size == 0)
1.18 markus 1180: size = blksize;
1.1 deraadt 1181: if (bp->cnt >= size)
1182: return (bp);
1.18 markus 1183: if (bp->buf == NULL)
1184: bp->buf = xmalloc(size);
1185: else
1.138 djm 1186: bp->buf = xrealloc(bp->buf, 1, size);
1.81 markus 1187: memset(bp->buf, 0, size);
1.1 deraadt 1188: bp->cnt = size;
1189: return (bp);
1190: }
1191:
1192: void
1.104 djm 1193: lostconn(int signo)
1.1 deraadt 1194: {
1195: if (!iamremote)
1.74 markus 1196: write(STDERR_FILENO, "lost connection\n", 16);
1197: if (signo)
1198: _exit(1);
1199: else
1200: exit(1);
1.4 aaron 1201: }
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