Annotation of src/usr.bin/ssh/scp.c, Revision 1.168
1.168 ! djm 1: /* $OpenBSD: scp.c,v 1.167 2010/09/22 22:58:51 djm 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;
1.168 ! djm 109: arglist remote_remote_args;
1.41 markus 110:
1.99 markus 111: /* Bandwidth limit */
1.167 djm 112: long long limit_kbps = 0;
113: struct bwlimit bwlimit;
1.99 markus 114:
1.11 aaron 115: /* Name of current file being transferred. */
116: char *curfile;
1.4 aaron 117:
1.1 deraadt 118: /* This is set to non-zero to enable verbose mode. */
1.17 markus 119: int verbose_mode = 0;
1.1 deraadt 120:
1.6 aaron 121: /* This is set to zero if the progressmeter is not desired. */
122: int showprogress = 1;
123:
1.34 deraadt 124: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 125: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 126:
1.92 markus 127: /* This is used to store the pid of ssh_program */
1.105 djm 128: pid_t do_cmd_pid = -1;
129:
130: static void
131: killchild(int signo)
132: {
1.119 dtucker 133: if (do_cmd_pid > 1) {
1.123 avsm 134: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 135: waitpid(do_cmd_pid, NULL, 0);
136: }
1.105 djm 137:
1.123 avsm 138: if (signo)
139: _exit(1);
140: exit(1);
1.105 djm 141: }
1.92 markus 142:
1.166 millert 143: static void
144: suspchild(int signo)
145: {
146: int status;
147:
148: if (do_cmd_pid > 1) {
149: kill(do_cmd_pid, signo);
150: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
151: errno == EINTR)
152: ;
153: kill(getpid(), SIGSTOP);
154: }
155: }
156:
1.129 djm 157: static int
158: do_local_cmd(arglist *a)
159: {
160: u_int i;
161: int status;
162: pid_t pid;
163:
164: if (a->num == 0)
165: fatal("do_local_cmd: no arguments");
166:
167: if (verbose_mode) {
168: fprintf(stderr, "Executing:");
169: for (i = 0; i < a->num; i++)
170: fprintf(stderr, " %s", a->list[i]);
171: fprintf(stderr, "\n");
172: }
173: if ((pid = fork()) == -1)
174: fatal("do_local_cmd: fork: %s", strerror(errno));
175:
176: if (pid == 0) {
177: execvp(a->list[0], a->list);
178: perror(a->list[0]);
179: exit(1);
180: }
181:
182: do_cmd_pid = pid;
183: signal(SIGTERM, killchild);
184: signal(SIGINT, killchild);
185: signal(SIGHUP, killchild);
186:
187: while (waitpid(pid, &status, 0) == -1)
188: if (errno != EINTR)
189: fatal("do_local_cmd: waitpid: %s", strerror(errno));
190:
191: do_cmd_pid = -1;
192:
193: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
194: return (-1);
195:
196: return (0);
197: }
198:
1.20 markus 199: /*
200: * This function executes the given command as the specified user on the
201: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
202: * assigns the input and output file descriptors on success.
203: */
1.1 deraadt 204:
1.27 markus 205: int
1.140 deraadt 206: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 207: {
1.18 markus 208: int pin[2], pout[2], reserved[2];
209:
210: if (verbose_mode)
1.78 deraadt 211: fprintf(stderr,
212: "Executing: program %s host %s, user %s, command %s\n",
213: ssh_program, host,
214: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 215:
1.20 markus 216: /*
217: * Reserve two descriptors so that the real pipes won't get
218: * descriptors 0 and 1 because that will screw up dup2 below.
219: */
1.142 markus 220: if (pipe(reserved) < 0)
221: fatal("pipe: %s", strerror(errno));
1.18 markus 222:
223: /* Create a socket pair for communicating with ssh. */
224: if (pipe(pin) < 0)
225: fatal("pipe: %s", strerror(errno));
226: if (pipe(pout) < 0)
227: fatal("pipe: %s", strerror(errno));
228:
229: /* Free the reserved descriptors. */
230: close(reserved[0]);
231: close(reserved[1]);
1.166 millert 232:
233: signal(SIGTSTP, suspchild);
234: signal(SIGTTIN, suspchild);
235: signal(SIGTTOU, suspchild);
1.18 markus 236:
1.106 nino 237: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 238: do_cmd_pid = fork();
239: if (do_cmd_pid == 0) {
1.18 markus 240: /* Child. */
241: close(pin[1]);
242: close(pout[0]);
243: dup2(pin[0], 0);
244: dup2(pout[1], 1);
245: close(pin[0]);
246: close(pout[1]);
247:
1.129 djm 248: replacearg(&args, 0, "%s", ssh_program);
1.165 guenther 249: if (remuser != NULL) {
250: addargs(&args, "-l");
251: addargs(&args, "%s", remuser);
252: }
253: addargs(&args, "--");
1.70 mouring 254: addargs(&args, "%s", host);
255: addargs(&args, "%s", cmd);
1.18 markus 256:
1.41 markus 257: execvp(ssh_program, args.list);
1.34 deraadt 258: perror(ssh_program);
1.18 markus 259: exit(1);
1.92 markus 260: } else if (do_cmd_pid == -1) {
261: fatal("fork: %s", strerror(errno));
1.18 markus 262: }
263: /* Parent. Close the other side, and return the local side. */
264: close(pin[0]);
265: *fdout = pin[1];
266: close(pout[1]);
267: *fdin = pout[0];
1.105 djm 268: signal(SIGTERM, killchild);
269: signal(SIGINT, killchild);
270: signal(SIGHUP, killchild);
1.18 markus 271: return 0;
1.1 deraadt 272: }
273:
274: typedef struct {
1.124 djm 275: size_t cnt;
1.1 deraadt 276: char *buf;
277: } BUF;
278:
1.18 markus 279: BUF *allocbuf(BUF *, int, int);
280: void lostconn(int);
281: int okname(char *);
282: void run_err(const char *,...);
283: void verifydir(char *);
1.1 deraadt 284:
285: struct passwd *pwd;
1.18 markus 286: uid_t userid;
1.1 deraadt 287: int errs, remin, remout;
288: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
289:
290: #define CMDNEEDS 64
291: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
292:
1.18 markus 293: int response(void);
294: void rsource(char *, struct stat *);
295: void sink(int, char *[]);
296: void source(int, char *[]);
297: void tolocal(int, char *[]);
298: void toremote(char *, int, char *[]);
299: void usage(void);
1.1 deraadt 300:
301: int
1.104 djm 302: main(int argc, char **argv)
1.1 deraadt 303: {
1.145 djm 304: int ch, fflag, tflag, status, n;
1.167 djm 305: char *targ, **newargv;
306: const char *errstr;
1.1 deraadt 307: extern char *optarg;
308: extern int optind;
1.126 djm 309:
310: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
311: sanitise_stdfd();
1.145 djm 312:
313: /* Copy argv, because we modify it */
314: newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
315: for (n = 0; n < argc; n++)
316: newargv[n] = xstrdup(argv[n]);
317: argv = newargv;
1.1 deraadt 318:
1.129 djm 319: memset(&args, '\0', sizeof(args));
1.168 ! djm 320: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
! 321: args.list = remote_remote_args.list = NULL;
1.129 djm 322: addargs(&args, "%s", ssh_program);
1.70 mouring 323: addargs(&args, "-x");
1.168 ! djm 324: addargs(&args, "-oForwardAgent=no");
! 325: addargs(&args, "-oPermitLocalCommand=no");
! 326: addargs(&args, "-oClearAllForwardings=yes");
1.41 markus 327:
1.1 deraadt 328: fflag = tflag = 0;
1.100 markus 329: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
1.18 markus 330: switch (ch) {
331: /* User-visible flags. */
1.100 markus 332: case '1':
333: case '2':
1.23 markus 334: case '4':
1.41 markus 335: case '6':
336: case 'C':
1.70 mouring 337: addargs(&args, "-%c", ch);
1.168 ! djm 338: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 339: break;
340: case 'o':
341: case 'c':
342: case 'i':
1.83 stevesk 343: case 'F':
1.168 ! djm 344: addargs(&remote_remote_args, "-%c", ch);
! 345: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 346: addargs(&args, "-%c", ch);
347: addargs(&args, "%s", optarg);
1.23 markus 348: break;
1.41 markus 349: case 'P':
1.168 ! djm 350: addargs(&remote_remote_args, "-p");
! 351: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 352: addargs(&args, "-p");
353: addargs(&args, "%s", optarg);
1.41 markus 354: break;
355: case 'B':
1.168 ! djm 356: addargs(&remote_remote_args, "-oBatchmode=yes");
! 357: addargs(&args, "-oBatchmode=yes");
1.23 markus 358: break;
1.99 markus 359: case 'l':
1.167 djm 360: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
361: &errstr);
362: if (errstr != NULL)
1.99 markus 363: usage();
1.167 djm 364: limit_kbps *= 1024; /* kbps */
365: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 366: break;
1.1 deraadt 367: case 'p':
368: pflag = 1;
369: break;
370: case 'r':
371: iamrecursive = 1;
372: break;
1.34 deraadt 373: case 'S':
1.41 markus 374: ssh_program = xstrdup(optarg);
375: break;
376: case 'v':
1.72 markus 377: addargs(&args, "-v");
1.168 ! djm 378: addargs(&remote_remote_args, "-v");
1.41 markus 379: verbose_mode = 1;
380: break;
381: case 'q':
1.111 dtucker 382: addargs(&args, "-q");
1.168 ! djm 383: addargs(&remote_remote_args, "-q");
1.41 markus 384: showprogress = 0;
1.34 deraadt 385: break;
386:
1.18 markus 387: /* Server options. */
1.1 deraadt 388: case 'd':
389: targetshouldbedirectory = 1;
390: break;
1.18 markus 391: case 'f': /* "from" */
1.1 deraadt 392: iamremote = 1;
393: fflag = 1;
394: break;
1.18 markus 395: case 't': /* "to" */
1.1 deraadt 396: iamremote = 1;
397: tflag = 1;
398: break;
399: default:
400: usage();
401: }
402: argc -= optind;
403: argv += optind;
404:
405: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 406: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 407:
1.156 djm 408: if (!isatty(STDOUT_FILENO))
1.7 deraadt 409: showprogress = 0;
410:
1.1 deraadt 411: remin = STDIN_FILENO;
412: remout = STDOUT_FILENO;
413:
1.52 stevesk 414: if (fflag) {
1.18 markus 415: /* Follow "protocol", send data. */
416: (void) response();
1.1 deraadt 417: source(argc, argv);
418: exit(errs != 0);
419: }
1.18 markus 420: if (tflag) {
421: /* Receive data. */
1.1 deraadt 422: sink(argc, argv);
423: exit(errs != 0);
424: }
425: if (argc < 2)
426: usage();
427: if (argc > 2)
428: targetshouldbedirectory = 1;
429:
430: remin = remout = -1;
1.92 markus 431: do_cmd_pid = -1;
1.1 deraadt 432: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 433: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
434: verbose_mode ? " -v" : "",
1.35 deraadt 435: iamrecursive ? " -r" : "", pflag ? " -p" : "",
436: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 437:
1.18 markus 438: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 439:
440: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
441: toremote(targ, argc, argv);
442: else {
443: if (targetshouldbedirectory)
444: verifydir(argv[argc - 1]);
1.130 djm 445: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 446: }
447: /*
448: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 449: * and no error has occurred yet
1.92 markus 450: */
451: if (do_cmd_pid != -1 && errs == 0) {
452: if (remin != -1)
453: (void) close(remin);
454: if (remout != -1)
455: (void) close(remout);
456: if (waitpid(do_cmd_pid, &status, 0) == -1)
457: errs = 1;
458: else {
459: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
460: errs = 1;
461: }
1.1 deraadt 462: }
463: exit(errs != 0);
464: }
465:
1.167 djm 466: /* Callback from atomicio6 to update progress meter and limit bandwidth */
467: static int
468: scpio(void *_cnt, size_t s)
1.161 djm 469: {
1.167 djm 470: off_t *cnt = (off_t *)_cnt;
471:
472: *cnt += s;
473: if (limit_kbps > 0)
474: bandwidth_limit(&bwlimit, s);
475: return 0;
1.161 djm 476: }
477:
1.1 deraadt 478: void
1.104 djm 479: toremote(char *targ, int argc, char **argv)
1.1 deraadt 480: {
1.120 deraadt 481: char *bp, *host, *src, *suser, *thost, *tuser, *arg;
1.129 djm 482: arglist alist;
1.140 deraadt 483: int i;
1.168 ! djm 484: u_int j;
1.129 djm 485:
486: memset(&alist, '\0', sizeof(alist));
487: alist.list = NULL;
1.1 deraadt 488:
489: *targ++ = 0;
490: if (*targ == 0)
491: targ = ".";
492:
1.121 djm 493: arg = xstrdup(argv[argc - 1]);
1.120 deraadt 494: if ((thost = strrchr(arg, '@'))) {
1.1 deraadt 495: /* user@host */
496: *thost++ = 0;
1.120 deraadt 497: tuser = arg;
1.1 deraadt 498: if (*tuser == '\0')
499: tuser = NULL;
500: } else {
1.120 deraadt 501: thost = arg;
1.1 deraadt 502: tuser = NULL;
503: }
504:
1.129 djm 505: if (tuser != NULL && !okname(tuser)) {
506: xfree(arg);
507: return;
508: }
509:
1.1 deraadt 510: for (i = 0; i < argc - 1; i++) {
511: src = colon(argv[i]);
1.18 markus 512: if (src) { /* remote to remote */
1.129 djm 513: freeargs(&alist);
514: addargs(&alist, "%s", ssh_program);
515: addargs(&alist, "-x");
1.168 ! djm 516: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 517: addargs(&alist, "-n");
1.168 ! djm 518: for (j = 0; j < remote_remote_args.num; j++) {
! 519: addargs(&alist, "%s",
! 520: remote_remote_args.list[j]);
! 521: }
1.1 deraadt 522: *src++ = 0;
523: if (*src == 0)
524: src = ".";
1.94 markus 525: host = strrchr(argv[i], '@');
1.129 djm 526:
1.1 deraadt 527: if (host) {
528: *host++ = 0;
1.23 markus 529: host = cleanhostname(host);
1.1 deraadt 530: suser = argv[i];
531: if (*suser == '\0')
532: suser = pwd->pw_name;
1.129 djm 533: else if (!okname(suser))
1.101 markus 534: continue;
1.129 djm 535: addargs(&alist, "-l");
536: addargs(&alist, "%s", suser);
1.23 markus 537: } else {
538: host = cleanhostname(argv[i]);
539: }
1.165 guenther 540: addargs(&alist, "--");
1.129 djm 541: addargs(&alist, "%s", host);
542: addargs(&alist, "%s", cmd);
543: addargs(&alist, "%s", src);
544: addargs(&alist, "%s%s%s:%s",
545: tuser ? tuser : "", tuser ? "@" : "",
546: thost, targ);
547: if (do_local_cmd(&alist) != 0)
1.109 markus 548: errs = 1;
1.18 markus 549: } else { /* local to remote */
1.1 deraadt 550: if (remin == -1) {
1.165 guenther 551: xasprintf(&bp, "%s -t -- %s", cmd, targ);
1.23 markus 552: host = cleanhostname(thost);
1.35 deraadt 553: if (do_cmd(host, tuser, bp, &remin,
1.140 deraadt 554: &remout) < 0)
1.18 markus 555: exit(1);
1.1 deraadt 556: if (response() < 0)
557: exit(1);
1.18 markus 558: (void) xfree(bp);
1.1 deraadt 559: }
1.18 markus 560: source(1, argv + i);
1.1 deraadt 561: }
562: }
1.142 markus 563: xfree(arg);
1.1 deraadt 564: }
565:
566: void
1.104 djm 567: tolocal(int argc, char **argv)
1.1 deraadt 568: {
569: char *bp, *host, *src, *suser;
1.129 djm 570: arglist alist;
1.140 deraadt 571: int i;
1.129 djm 572:
573: memset(&alist, '\0', sizeof(alist));
574: alist.list = NULL;
1.1 deraadt 575:
576: for (i = 0; i < argc - 1; i++) {
1.18 markus 577: if (!(src = colon(argv[i]))) { /* Local to local. */
1.129 djm 578: freeargs(&alist);
579: addargs(&alist, "%s", _PATH_CP);
580: if (iamrecursive)
581: addargs(&alist, "-r");
582: if (pflag)
583: addargs(&alist, "-p");
1.165 guenther 584: addargs(&alist, "--");
1.129 djm 585: addargs(&alist, "%s", argv[i]);
586: addargs(&alist, "%s", argv[argc-1]);
587: if (do_local_cmd(&alist))
1.1 deraadt 588: ++errs;
589: continue;
590: }
591: *src++ = 0;
592: if (*src == 0)
593: src = ".";
1.94 markus 594: if ((host = strrchr(argv[i], '@')) == NULL) {
1.1 deraadt 595: host = argv[i];
596: suser = NULL;
597: } else {
598: *host++ = 0;
599: suser = argv[i];
600: if (*suser == '\0')
601: suser = pwd->pw_name;
602: }
1.23 markus 603: host = cleanhostname(host);
1.165 guenther 604: xasprintf(&bp, "%s -f -- %s", cmd, src);
1.140 deraadt 605: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
1.18 markus 606: (void) xfree(bp);
607: ++errs;
608: continue;
1.1 deraadt 609: }
1.18 markus 610: xfree(bp);
1.1 deraadt 611: sink(1, argv + argc - 1);
1.18 markus 612: (void) close(remin);
1.1 deraadt 613: remin = remout = -1;
614: }
615: }
616:
617: void
1.104 djm 618: source(int argc, char **argv)
1.1 deraadt 619: {
620: struct stat stb;
621: static BUF buffer;
622: BUF *bp;
1.163 dtucker 623: off_t i, statbytes;
624: size_t amt;
1.125 dtucker 625: int fd = -1, haderr, indx;
1.158 dtucker 626: char *last, *name, buf[2048], encname[MAXPATHLEN];
1.65 deraadt 627: int len;
1.1 deraadt 628:
629: for (indx = 0; indx < argc; ++indx) {
1.18 markus 630: name = argv[indx];
1.11 aaron 631: statbytes = 0;
1.65 deraadt 632: len = strlen(name);
633: while (len > 1 && name[len-1] == '/')
634: name[--len] = '\0';
1.158 dtucker 635: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
636: goto syserr;
1.85 markus 637: if (strchr(name, '\n') != NULL) {
1.158 dtucker 638: strnvis(encname, name, sizeof(encname), VIS_NL);
639: name = encname;
1.85 markus 640: }
1.1 deraadt 641: if (fstat(fd, &stb) < 0) {
642: syserr: run_err("%s: %s", name, strerror(errno));
643: goto next;
644: }
1.163 dtucker 645: if (stb.st_size < 0) {
646: run_err("%s: %s", name, "Negative file size");
647: goto next;
648: }
1.157 djm 649: unset_nonblock(fd);
1.1 deraadt 650: switch (stb.st_mode & S_IFMT) {
651: case S_IFREG:
652: break;
653: case S_IFDIR:
654: if (iamrecursive) {
655: rsource(name, &stb);
656: goto next;
657: }
658: /* FALLTHROUGH */
659: default:
660: run_err("%s: not a regular file", name);
661: goto next;
662: }
663: if ((last = strrchr(name, '/')) == NULL)
664: last = name;
665: else
666: ++last;
1.11 aaron 667: curfile = last;
1.1 deraadt 668: if (pflag) {
669: /*
670: * Make it compatible with possible future
671: * versions expecting microseconds.
672: */
1.55 deraadt 673: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.162 dtucker 674: (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
675: (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
676: if (verbose_mode) {
677: fprintf(stderr, "File mtime %ld atime %ld\n",
678: (long)stb.st_mtime, (long)stb.st_atime);
679: fprintf(stderr, "Sending file timestamps: %s",
680: buf);
681: }
1.107 deraadt 682: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 683: if (response() < 0)
684: goto next;
685: }
686: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 687: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 688: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 689: (long long)stb.st_size, last);
1.18 markus 690: if (verbose_mode) {
691: fprintf(stderr, "Sending file modes: %s", buf);
692: }
1.107 deraadt 693: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 694: if (response() < 0)
695: goto next;
1.161 djm 696: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 697: next: if (fd != -1) {
698: (void) close(fd);
699: fd = -1;
700: }
1.1 deraadt 701: continue;
702: }
1.97 fgsch 703: if (showprogress)
704: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 705: set_nonblock(remout);
1.1 deraadt 706: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
707: amt = bp->cnt;
1.163 dtucker 708: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 709: amt = stb.st_size - i;
710: if (!haderr) {
1.161 djm 711: if (atomicio(read, fd, bp->buf, amt) != amt)
1.122 avsm 712: haderr = errno;
1.1 deraadt 713: }
1.161 djm 714: /* Keep writing after error to retain sync */
715: if (haderr) {
716: (void)atomicio(vwrite, remout, bp->buf, amt);
717: continue;
1.1 deraadt 718: }
1.167 djm 719: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 720: &statbytes) != amt)
721: haderr = errno;
1.1 deraadt 722: }
1.161 djm 723: unset_nonblock(remout);
1.18 markus 724: if (showprogress)
1.97 fgsch 725: stop_progress_meter();
1.4 aaron 726:
1.127 deraadt 727: if (fd != -1) {
728: if (close(fd) < 0 && !haderr)
729: haderr = errno;
730: fd = -1;
731: }
1.1 deraadt 732: if (!haderr)
1.107 deraadt 733: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 734: else
735: run_err("%s: %s", name, strerror(haderr));
1.18 markus 736: (void) response();
1.1 deraadt 737: }
738: }
739:
740: void
1.104 djm 741: rsource(char *name, struct stat *statp)
1.1 deraadt 742: {
743: DIR *dirp;
744: struct dirent *dp;
745: char *last, *vect[1], path[1100];
746:
747: if (!(dirp = opendir(name))) {
748: run_err("%s: %s", name, strerror(errno));
749: return;
750: }
751: last = strrchr(name, '/');
752: if (last == 0)
753: last = name;
754: else
755: last++;
756: if (pflag) {
1.55 deraadt 757: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 758: (u_long) statp->st_mtime,
759: (u_long) statp->st_atime);
1.107 deraadt 760: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 761: if (response() < 0) {
762: closedir(dirp);
763: return;
764: }
765: }
1.55 deraadt 766: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 767: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 768: if (verbose_mode)
769: fprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 770: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 771: if (response() < 0) {
772: closedir(dirp);
773: return;
774: }
1.63 stevesk 775: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 776: if (dp->d_ino == 0)
777: continue;
778: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
779: continue;
780: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
781: run_err("%s/%s: name too long", name, dp->d_name);
782: continue;
783: }
1.55 deraadt 784: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 785: vect[0] = path;
786: source(1, vect);
787: }
1.18 markus 788: (void) closedir(dirp);
1.107 deraadt 789: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 790: (void) response();
1.1 deraadt 791: }
792:
793: void
1.104 djm 794: sink(int argc, char **argv)
1.1 deraadt 795: {
796: static BUF buffer;
797: struct stat stb;
1.18 markus 798: enum {
799: YES, NO, DISPLAYED
800: } wrerr;
1.1 deraadt 801: BUF *bp;
1.122 avsm 802: off_t i;
1.124 djm 803: size_t j, count;
1.140 deraadt 804: int amt, exists, first, ofd;
805: mode_t mode, omode, mask;
1.97 fgsch 806: off_t size, statbytes;
1.36 deraadt 807: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 808: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 809: struct timeval tv[2];
1.1 deraadt 810:
1.66 stevesk 811: #define atime tv[0]
812: #define mtime tv[1]
1.118 deraadt 813: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 814:
815: setimes = targisdir = 0;
816: mask = umask(0);
817: if (!pflag)
1.18 markus 818: (void) umask(mask);
1.1 deraadt 819: if (argc != 1) {
820: run_err("ambiguous target");
821: exit(1);
822: }
823: targ = *argv;
824: if (targetshouldbedirectory)
825: verifydir(targ);
1.18 markus 826:
1.107 deraadt 827: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 828: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
829: targisdir = 1;
830: for (first = 1;; first = 0) {
831: cp = buf;
1.122 avsm 832: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 833: return;
834: if (*cp++ == '\n')
835: SCREWUP("unexpected <newline>");
836: do {
1.30 deraadt 837: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 838: SCREWUP("lost connection");
839: *cp++ = ch;
840: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
841: *cp = 0;
1.114 markus 842: if (verbose_mode)
843: fprintf(stderr, "Sink: %s", buf);
1.1 deraadt 844:
845: if (buf[0] == '\01' || buf[0] == '\02') {
846: if (iamremote == 0)
1.107 deraadt 847: (void) atomicio(vwrite, STDERR_FILENO,
1.44 deraadt 848: buf + 1, strlen(buf + 1));
1.1 deraadt 849: if (buf[0] == '\02')
850: exit(1);
851: ++errs;
852: continue;
853: }
854: if (buf[0] == 'E') {
1.107 deraadt 855: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 856: return;
857: }
858: if (ch == '\n')
859: *--cp = 0;
860:
861: cp = buf;
862: if (*cp == 'T') {
863: setimes++;
864: cp++;
1.66 stevesk 865: mtime.tv_sec = strtol(cp, &cp, 10);
866: if (!cp || *cp++ != ' ')
1.1 deraadt 867: SCREWUP("mtime.sec not delimited");
1.66 stevesk 868: mtime.tv_usec = strtol(cp, &cp, 10);
869: if (!cp || *cp++ != ' ')
1.1 deraadt 870: SCREWUP("mtime.usec not delimited");
1.66 stevesk 871: atime.tv_sec = strtol(cp, &cp, 10);
872: if (!cp || *cp++ != ' ')
1.1 deraadt 873: SCREWUP("atime.sec not delimited");
1.66 stevesk 874: atime.tv_usec = strtol(cp, &cp, 10);
875: if (!cp || *cp++ != '\0')
1.1 deraadt 876: SCREWUP("atime.usec not delimited");
1.107 deraadt 877: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 878: continue;
879: }
880: if (*cp != 'C' && *cp != 'D') {
881: /*
882: * Check for the case "rcp remote:foo\* local:bar".
883: * In this case, the line "No match." can be returned
884: * by the shell before the rcp command on the remote is
885: * executed so the ^Aerror_message convention isn't
886: * followed.
887: */
888: if (first) {
889: run_err("%s", cp);
890: exit(1);
891: }
892: SCREWUP("expected control record");
893: }
894: mode = 0;
895: for (++cp; cp < buf + 5; cp++) {
896: if (*cp < '0' || *cp > '7')
897: SCREWUP("bad mode");
898: mode = (mode << 3) | (*cp - '0');
899: }
900: if (*cp++ != ' ')
901: SCREWUP("mode not delimited");
902:
1.63 stevesk 903: for (size = 0; isdigit(*cp);)
1.1 deraadt 904: size = size * 10 + (*cp++ - '0');
905: if (*cp++ != ' ')
906: SCREWUP("size not delimited");
1.114 markus 907: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
908: run_err("error: unexpected filename: %s", cp);
909: exit(1);
910: }
1.1 deraadt 911: if (targisdir) {
912: static char *namebuf;
1.124 djm 913: static size_t cursize;
1.1 deraadt 914: size_t need;
915:
916: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 917: if (need > cursize) {
1.58 danh 918: if (namebuf)
919: xfree(namebuf);
1.18 markus 920: namebuf = xmalloc(need);
1.55 deraadt 921: cursize = need;
922: }
923: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 924: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 925: np = namebuf;
926: } else
927: np = targ;
1.12 aaron 928: curfile = cp;
1.1 deraadt 929: exists = stat(np, &stb) == 0;
930: if (buf[0] == 'D') {
931: int mod_flag = pflag;
1.114 markus 932: if (!iamrecursive)
933: SCREWUP("received directory without -r");
1.1 deraadt 934: if (exists) {
935: if (!S_ISDIR(stb.st_mode)) {
936: errno = ENOTDIR;
937: goto bad;
938: }
939: if (pflag)
1.18 markus 940: (void) chmod(np, mode);
1.1 deraadt 941: } else {
1.18 markus 942: /* Handle copying from a read-only
943: directory */
1.1 deraadt 944: mod_flag = 1;
945: if (mkdir(np, mode | S_IRWXU) < 0)
946: goto bad;
947: }
1.58 danh 948: vect[0] = xstrdup(np);
1.1 deraadt 949: sink(1, vect);
950: if (setimes) {
951: setimes = 0;
1.59 deraadt 952: if (utimes(vect[0], tv) < 0)
1.18 markus 953: run_err("%s: set times: %s",
1.59 deraadt 954: vect[0], strerror(errno));
1.1 deraadt 955: }
956: if (mod_flag)
1.59 deraadt 957: (void) chmod(vect[0], mode);
958: if (vect[0])
959: xfree(vect[0]);
1.1 deraadt 960: continue;
961: }
962: omode = mode;
963: mode |= S_IWRITE;
1.71 markus 964: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 965: bad: run_err("%s: %s", np, strerror(errno));
966: continue;
967: }
1.107 deraadt 968: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 969: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 970: (void) close(ofd);
1.1 deraadt 971: continue;
972: }
973: cp = bp->buf;
974: wrerr = NO;
1.7 deraadt 975:
1.12 aaron 976: statbytes = 0;
1.97 fgsch 977: if (showprogress)
978: start_progress_meter(curfile, size, &statbytes);
1.161 djm 979: set_nonblock(remin);
980: for (count = i = 0; i < size; i += bp->cnt) {
981: amt = bp->cnt;
1.1 deraadt 982: if (i + amt > size)
983: amt = size - i;
984: count += amt;
985: do {
1.167 djm 986: j = atomicio6(read, remin, cp, amt,
987: scpio, &statbytes);
1.122 avsm 988: if (j == 0) {
1.161 djm 989: run_err("%s", j != EPIPE ?
990: strerror(errno) :
1.63 stevesk 991: "dropped connection");
1.1 deraadt 992: exit(1);
993: }
994: amt -= j;
995: cp += j;
996: } while (amt > 0);
1.112 djm 997:
1.1 deraadt 998: if (count == bp->cnt) {
999: /* Keep reading so we stay sync'd up. */
1000: if (wrerr == NO) {
1.122 avsm 1001: if (atomicio(vwrite, ofd, bp->buf,
1002: count) != count) {
1.1 deraadt 1003: wrerr = YES;
1.122 avsm 1004: wrerrno = errno;
1.1 deraadt 1005: }
1006: }
1007: count = 0;
1008: cp = bp->buf;
1009: }
1010: }
1.161 djm 1011: unset_nonblock(remin);
1.7 deraadt 1012: if (showprogress)
1.97 fgsch 1013: stop_progress_meter();
1.1 deraadt 1014: if (count != 0 && wrerr == NO &&
1.122 avsm 1015: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1016: wrerr = YES;
1.122 avsm 1017: wrerrno = errno;
1.1 deraadt 1018: }
1.159 djm 1019: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1020: ftruncate(ofd, size) != 0) {
1.1 deraadt 1021: run_err("%s: truncate: %s", np, strerror(errno));
1022: wrerr = DISPLAYED;
1023: }
1024: if (pflag) {
1025: if (exists || omode != mode)
1.116 dtucker 1026: if (fchmod(ofd, omode)) {
1.1 deraadt 1027: run_err("%s: set mode: %s",
1.63 stevesk 1028: np, strerror(errno));
1.116 dtucker 1029: wrerr = DISPLAYED;
1030: }
1.1 deraadt 1031: } else {
1032: if (!exists && omode != mode)
1.116 dtucker 1033: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1034: run_err("%s: set mode: %s",
1.63 stevesk 1035: np, strerror(errno));
1.116 dtucker 1036: wrerr = DISPLAYED;
1037: }
1.1 deraadt 1038: }
1.33 provos 1039: if (close(ofd) == -1) {
1040: wrerr = YES;
1041: wrerrno = errno;
1042: }
1.18 markus 1043: (void) response();
1.1 deraadt 1044: if (setimes && wrerr == NO) {
1045: setimes = 0;
1.40 markus 1046: if (utimes(np, tv) < 0) {
1.1 deraadt 1047: run_err("%s: set times: %s",
1.63 stevesk 1048: np, strerror(errno));
1.1 deraadt 1049: wrerr = DISPLAYED;
1050: }
1051: }
1.18 markus 1052: switch (wrerr) {
1.1 deraadt 1053: case YES:
1054: run_err("%s: %s", np, strerror(wrerrno));
1055: break;
1056: case NO:
1.107 deraadt 1057: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1058: break;
1059: case DISPLAYED:
1060: break;
1061: }
1062: }
1063: screwup:
1064: run_err("protocol error: %s", why);
1065: exit(1);
1066: }
1067:
1068: int
1.86 itojun 1069: response(void)
1.1 deraadt 1070: {
1071: char ch, *cp, resp, rbuf[2048];
1072:
1.30 deraadt 1073: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1074: lostconn(0);
1075:
1076: cp = rbuf;
1.18 markus 1077: switch (resp) {
1078: case 0: /* ok */
1.1 deraadt 1079: return (0);
1080: default:
1081: *cp++ = resp;
1082: /* FALLTHROUGH */
1.18 markus 1083: case 1: /* error, followed by error msg */
1084: case 2: /* fatal error, "" */
1.1 deraadt 1085: do {
1.30 deraadt 1086: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1087: lostconn(0);
1088: *cp++ = ch;
1089: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1090:
1091: if (!iamremote)
1.107 deraadt 1092: (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 1093: ++errs;
1094: if (resp == 1)
1095: return (-1);
1096: exit(1);
1097: }
1098: /* NOTREACHED */
1099: }
1100:
1101: void
1.86 itojun 1102: usage(void)
1.1 deraadt 1103: {
1.83 stevesk 1104: (void) fprintf(stderr,
1.110 jmc 1105: "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1106: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1107: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1108: exit(1);
1109: }
1110:
1111: void
1.18 markus 1112: run_err(const char *fmt,...)
1.1 deraadt 1113: {
1114: static FILE *fp;
1115: va_list ap;
1116:
1117: ++errs;
1.136 biorn 1118: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1119: (void) fprintf(fp, "%c", 0x01);
1120: (void) fprintf(fp, "scp: ");
1121: va_start(ap, fmt);
1122: (void) vfprintf(fp, fmt, ap);
1123: va_end(ap);
1124: (void) fprintf(fp, "\n");
1125: (void) fflush(fp);
1126: }
1.18 markus 1127:
1128: if (!iamremote) {
1.73 markus 1129: va_start(ap, fmt);
1.18 markus 1130: vfprintf(stderr, fmt, ap);
1.73 markus 1131: va_end(ap);
1.18 markus 1132: fprintf(stderr, "\n");
1133: }
1.1 deraadt 1134: }
1135:
1136: void
1.104 djm 1137: verifydir(char *cp)
1.1 deraadt 1138: {
1139: struct stat stb;
1140:
1141: if (!stat(cp, &stb)) {
1142: if (S_ISDIR(stb.st_mode))
1143: return;
1144: errno = ENOTDIR;
1145: }
1146: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1147: killchild(0);
1.1 deraadt 1148: }
1149:
1150: int
1.104 djm 1151: okname(char *cp0)
1.1 deraadt 1152: {
1153: int c;
1154: char *cp;
1155:
1156: cp = cp0;
1157: do {
1.75 deraadt 1158: c = (int)*cp;
1.1 deraadt 1159: if (c & 0200)
1160: goto bad;
1.101 markus 1161: if (!isalpha(c) && !isdigit(c)) {
1162: switch (c) {
1163: case '\'':
1164: case '"':
1165: case '`':
1166: case ' ':
1167: case '#':
1168: goto bad;
1169: default:
1170: break;
1171: }
1172: }
1.1 deraadt 1173: } while (*++cp);
1174: return (1);
1175:
1.25 markus 1176: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1177: return (0);
1178: }
1179:
1180: BUF *
1.104 djm 1181: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1182: {
1183: size_t size;
1184: struct stat stb;
1185:
1186: if (fstat(fd, &stb) < 0) {
1187: run_err("fstat: %s", strerror(errno));
1188: return (0);
1189: }
1.95 markus 1190: size = roundup(stb.st_blksize, blksize);
1191: if (size == 0)
1.18 markus 1192: size = blksize;
1.1 deraadt 1193: if (bp->cnt >= size)
1194: return (bp);
1.18 markus 1195: if (bp->buf == NULL)
1196: bp->buf = xmalloc(size);
1197: else
1.138 djm 1198: bp->buf = xrealloc(bp->buf, 1, size);
1.81 markus 1199: memset(bp->buf, 0, size);
1.1 deraadt 1200: bp->cnt = size;
1201: return (bp);
1202: }
1203:
1204: void
1.104 djm 1205: lostconn(int signo)
1.1 deraadt 1206: {
1207: if (!iamremote)
1.74 markus 1208: write(STDERR_FILENO, "lost connection\n", 16);
1209: if (signo)
1210: _exit(1);
1211: else
1212: exit(1);
1.4 aaron 1213: }
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