Annotation of src/usr.bin/ssh/scp.c, Revision 1.161
1.161 ! djm 1: /* $OpenBSD: scp.c,v 1.160 2007/08/06 19:16:06 sobrado 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:
1.99 markus 107: void bwlimit(int);
108:
1.70 mouring 109: /* Struct for addargs */
110: arglist args;
1.41 markus 111:
1.99 markus 112: /* Bandwidth limit */
1.113 djm 113: off_t limit_rate = 0;
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:
1.129 djm 143: static int
144: do_local_cmd(arglist *a)
145: {
146: u_int i;
147: int status;
148: pid_t pid;
149:
150: if (a->num == 0)
151: fatal("do_local_cmd: no arguments");
152:
153: if (verbose_mode) {
154: fprintf(stderr, "Executing:");
155: for (i = 0; i < a->num; i++)
156: fprintf(stderr, " %s", a->list[i]);
157: fprintf(stderr, "\n");
158: }
159: if ((pid = fork()) == -1)
160: fatal("do_local_cmd: fork: %s", strerror(errno));
161:
162: if (pid == 0) {
163: execvp(a->list[0], a->list);
164: perror(a->list[0]);
165: exit(1);
166: }
167:
168: do_cmd_pid = pid;
169: signal(SIGTERM, killchild);
170: signal(SIGINT, killchild);
171: signal(SIGHUP, killchild);
172:
173: while (waitpid(pid, &status, 0) == -1)
174: if (errno != EINTR)
175: fatal("do_local_cmd: waitpid: %s", strerror(errno));
176:
177: do_cmd_pid = -1;
178:
179: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
180: return (-1);
181:
182: return (0);
183: }
184:
1.20 markus 185: /*
186: * This function executes the given command as the specified user on the
187: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
188: * assigns the input and output file descriptors on success.
189: */
1.1 deraadt 190:
1.27 markus 191: int
1.140 deraadt 192: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 193: {
1.18 markus 194: int pin[2], pout[2], reserved[2];
195:
196: if (verbose_mode)
1.78 deraadt 197: fprintf(stderr,
198: "Executing: program %s host %s, user %s, command %s\n",
199: ssh_program, host,
200: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 201:
1.20 markus 202: /*
203: * Reserve two descriptors so that the real pipes won't get
204: * descriptors 0 and 1 because that will screw up dup2 below.
205: */
1.142 markus 206: if (pipe(reserved) < 0)
207: fatal("pipe: %s", strerror(errno));
1.18 markus 208:
209: /* Create a socket pair for communicating with ssh. */
210: if (pipe(pin) < 0)
211: fatal("pipe: %s", strerror(errno));
212: if (pipe(pout) < 0)
213: fatal("pipe: %s", strerror(errno));
214:
215: /* Free the reserved descriptors. */
216: close(reserved[0]);
217: close(reserved[1]);
218:
1.106 nino 219: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 220: do_cmd_pid = fork();
221: if (do_cmd_pid == 0) {
1.18 markus 222: /* Child. */
223: close(pin[1]);
224: close(pout[0]);
225: dup2(pin[0], 0);
226: dup2(pout[1], 1);
227: close(pin[0]);
228: close(pout[1]);
229:
1.129 djm 230: replacearg(&args, 0, "%s", ssh_program);
1.41 markus 231: if (remuser != NULL)
1.70 mouring 232: addargs(&args, "-l%s", remuser);
233: addargs(&args, "%s", host);
234: addargs(&args, "%s", cmd);
1.18 markus 235:
1.41 markus 236: execvp(ssh_program, args.list);
1.34 deraadt 237: perror(ssh_program);
1.18 markus 238: exit(1);
1.92 markus 239: } else if (do_cmd_pid == -1) {
240: fatal("fork: %s", strerror(errno));
1.18 markus 241: }
242: /* Parent. Close the other side, and return the local side. */
243: close(pin[0]);
244: *fdout = pin[1];
245: close(pout[1]);
246: *fdin = pout[0];
1.105 djm 247: signal(SIGTERM, killchild);
248: signal(SIGINT, killchild);
249: signal(SIGHUP, killchild);
1.18 markus 250: return 0;
1.1 deraadt 251: }
252:
253: typedef struct {
1.124 djm 254: size_t cnt;
1.1 deraadt 255: char *buf;
256: } BUF;
257:
1.18 markus 258: BUF *allocbuf(BUF *, int, int);
259: void lostconn(int);
260: int okname(char *);
261: void run_err(const char *,...);
262: void verifydir(char *);
1.1 deraadt 263:
264: struct passwd *pwd;
1.18 markus 265: uid_t userid;
1.1 deraadt 266: int errs, remin, remout;
267: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
268:
269: #define CMDNEEDS 64
270: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
271:
1.18 markus 272: int response(void);
273: void rsource(char *, struct stat *);
274: void sink(int, char *[]);
275: void source(int, char *[]);
276: void tolocal(int, char *[]);
277: void toremote(char *, int, char *[]);
278: void usage(void);
1.1 deraadt 279:
280: int
1.104 djm 281: main(int argc, char **argv)
1.1 deraadt 282: {
1.145 djm 283: int ch, fflag, tflag, status, n;
1.99 markus 284: double speed;
1.145 djm 285: char *targ, *endp, **newargv;
1.1 deraadt 286: extern char *optarg;
287: extern int optind;
1.126 djm 288:
289: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
290: sanitise_stdfd();
1.145 djm 291:
292: /* Copy argv, because we modify it */
293: newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
294: for (n = 0; n < argc; n++)
295: newargv[n] = xstrdup(argv[n]);
296: argv = newargv;
1.1 deraadt 297:
1.129 djm 298: memset(&args, '\0', sizeof(args));
1.41 markus 299: args.list = NULL;
1.129 djm 300: addargs(&args, "%s", ssh_program);
1.70 mouring 301: addargs(&args, "-x");
1.82 stevesk 302: addargs(&args, "-oForwardAgent no");
1.128 reyk 303: addargs(&args, "-oPermitLocalCommand no");
1.84 stevesk 304: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 305:
1.1 deraadt 306: fflag = tflag = 0;
1.100 markus 307: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
1.18 markus 308: switch (ch) {
309: /* User-visible flags. */
1.100 markus 310: case '1':
311: case '2':
1.23 markus 312: case '4':
1.41 markus 313: case '6':
314: case 'C':
1.70 mouring 315: addargs(&args, "-%c", ch);
1.41 markus 316: break;
317: case 'o':
318: case 'c':
319: case 'i':
1.83 stevesk 320: case 'F':
1.70 mouring 321: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 322: break;
1.41 markus 323: case 'P':
1.70 mouring 324: addargs(&args, "-p%s", optarg);
1.41 markus 325: break;
326: case 'B':
1.70 mouring 327: addargs(&args, "-oBatchmode yes");
1.23 markus 328: break;
1.99 markus 329: case 'l':
330: speed = strtod(optarg, &endp);
331: if (speed <= 0 || *endp != '\0')
332: usage();
1.113 djm 333: limit_rate = speed * 1024;
1.99 markus 334: break;
1.1 deraadt 335: case 'p':
336: pflag = 1;
337: break;
338: case 'r':
339: iamrecursive = 1;
340: break;
1.34 deraadt 341: case 'S':
1.41 markus 342: ssh_program = xstrdup(optarg);
343: break;
344: case 'v':
1.72 markus 345: addargs(&args, "-v");
1.41 markus 346: verbose_mode = 1;
347: break;
348: case 'q':
1.111 dtucker 349: addargs(&args, "-q");
1.41 markus 350: showprogress = 0;
1.34 deraadt 351: break;
352:
1.18 markus 353: /* Server options. */
1.1 deraadt 354: case 'd':
355: targetshouldbedirectory = 1;
356: break;
1.18 markus 357: case 'f': /* "from" */
1.1 deraadt 358: iamremote = 1;
359: fflag = 1;
360: break;
1.18 markus 361: case 't': /* "to" */
1.1 deraadt 362: iamremote = 1;
363: tflag = 1;
364: break;
365: default:
366: usage();
367: }
368: argc -= optind;
369: argv += optind;
370:
371: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 372: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 373:
1.156 djm 374: if (!isatty(STDOUT_FILENO))
1.7 deraadt 375: showprogress = 0;
376:
1.1 deraadt 377: remin = STDIN_FILENO;
378: remout = STDOUT_FILENO;
379:
1.52 stevesk 380: if (fflag) {
1.18 markus 381: /* Follow "protocol", send data. */
382: (void) response();
1.1 deraadt 383: source(argc, argv);
384: exit(errs != 0);
385: }
1.18 markus 386: if (tflag) {
387: /* Receive data. */
1.1 deraadt 388: sink(argc, argv);
389: exit(errs != 0);
390: }
391: if (argc < 2)
392: usage();
393: if (argc > 2)
394: targetshouldbedirectory = 1;
395:
396: remin = remout = -1;
1.92 markus 397: do_cmd_pid = -1;
1.1 deraadt 398: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 399: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
400: verbose_mode ? " -v" : "",
1.35 deraadt 401: iamrecursive ? " -r" : "", pflag ? " -p" : "",
402: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 403:
1.18 markus 404: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 405:
406: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
407: toremote(targ, argc, argv);
408: else {
409: if (targetshouldbedirectory)
410: verifydir(argv[argc - 1]);
1.130 djm 411: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 412: }
413: /*
414: * Finally check the exit status of the ssh process, if one was forked
415: * and no error has occured yet
416: */
417: if (do_cmd_pid != -1 && errs == 0) {
418: if (remin != -1)
419: (void) close(remin);
420: if (remout != -1)
421: (void) close(remout);
422: if (waitpid(do_cmd_pid, &status, 0) == -1)
423: errs = 1;
424: else {
425: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
426: errs = 1;
427: }
1.1 deraadt 428: }
429: exit(errs != 0);
430: }
431:
1.161 ! djm 432: /*
! 433: * atomicio-like wrapper that also applies bandwidth limits and updates
! 434: * the progressmeter counter.
! 435: */
! 436: static size_t
! 437: scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
! 438: {
! 439: u_char *p = (u_char *)_p;
! 440: size_t offset;
! 441: ssize_t r;
! 442: struct pollfd pfd;
! 443:
! 444: pfd.fd = fd;
! 445: pfd.events = f == read ? POLLIN : POLLOUT;
! 446: for (offset = 0; offset < l;) {
! 447: r = f(fd, p + offset, l - offset);
! 448: if (r == 0) {
! 449: errno = EPIPE;
! 450: return offset;
! 451: }
! 452: if (r < 0) {
! 453: if (errno == EINTR)
! 454: continue;
! 455: if (errno == EAGAIN) {
! 456: (void)poll(&pfd, 1, -1); /* Ignore errors */
! 457: continue;
! 458: }
! 459: return offset;
! 460: }
! 461: offset += (size_t)r;
! 462: *c += (off_t)r;
! 463: if (limit_rate)
! 464: bwlimit(r);
! 465: }
! 466: return offset;
! 467: }
! 468:
1.1 deraadt 469: void
1.104 djm 470: toremote(char *targ, int argc, char **argv)
1.1 deraadt 471: {
1.120 deraadt 472: char *bp, *host, *src, *suser, *thost, *tuser, *arg;
1.129 djm 473: arglist alist;
1.140 deraadt 474: int i;
1.129 djm 475:
476: memset(&alist, '\0', sizeof(alist));
477: alist.list = NULL;
1.1 deraadt 478:
479: *targ++ = 0;
480: if (*targ == 0)
481: targ = ".";
482:
1.121 djm 483: arg = xstrdup(argv[argc - 1]);
1.120 deraadt 484: if ((thost = strrchr(arg, '@'))) {
1.1 deraadt 485: /* user@host */
486: *thost++ = 0;
1.120 deraadt 487: tuser = arg;
1.1 deraadt 488: if (*tuser == '\0')
489: tuser = NULL;
490: } else {
1.120 deraadt 491: thost = arg;
1.1 deraadt 492: tuser = NULL;
493: }
494:
1.129 djm 495: if (tuser != NULL && !okname(tuser)) {
496: xfree(arg);
497: return;
498: }
499:
1.1 deraadt 500: for (i = 0; i < argc - 1; i++) {
501: src = colon(argv[i]);
1.18 markus 502: if (src) { /* remote to remote */
1.129 djm 503: freeargs(&alist);
504: addargs(&alist, "%s", ssh_program);
505: if (verbose_mode)
506: addargs(&alist, "-v");
507: addargs(&alist, "-x");
508: addargs(&alist, "-oClearAllForwardings yes");
509: addargs(&alist, "-n");
510:
1.1 deraadt 511: *src++ = 0;
512: if (*src == 0)
513: src = ".";
1.94 markus 514: host = strrchr(argv[i], '@');
1.129 djm 515:
1.1 deraadt 516: if (host) {
517: *host++ = 0;
1.23 markus 518: host = cleanhostname(host);
1.1 deraadt 519: suser = argv[i];
520: if (*suser == '\0')
521: suser = pwd->pw_name;
1.129 djm 522: else if (!okname(suser))
1.101 markus 523: continue;
1.129 djm 524: addargs(&alist, "-l");
525: addargs(&alist, "%s", suser);
1.23 markus 526: } else {
527: host = cleanhostname(argv[i]);
528: }
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) {
1.141 djm 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");
572: addargs(&alist, "%s", argv[i]);
573: addargs(&alist, "%s", argv[argc-1]);
574: if (do_local_cmd(&alist))
1.1 deraadt 575: ++errs;
576: continue;
577: }
578: *src++ = 0;
579: if (*src == 0)
580: src = ".";
1.94 markus 581: if ((host = strrchr(argv[i], '@')) == NULL) {
1.1 deraadt 582: host = argv[i];
583: suser = NULL;
584: } else {
585: *host++ = 0;
586: suser = argv[i];
587: if (*suser == '\0')
588: suser = pwd->pw_name;
589: }
1.23 markus 590: host = cleanhostname(host);
1.141 djm 591: xasprintf(&bp, "%s -f %s", cmd, src);
1.140 deraadt 592: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
1.18 markus 593: (void) xfree(bp);
594: ++errs;
595: continue;
1.1 deraadt 596: }
1.18 markus 597: xfree(bp);
1.1 deraadt 598: sink(1, argv + argc - 1);
1.18 markus 599: (void) close(remin);
1.1 deraadt 600: remin = remout = -1;
601: }
602: }
603:
604: void
1.104 djm 605: source(int argc, char **argv)
1.1 deraadt 606: {
607: struct stat stb;
608: static BUF buffer;
609: BUF *bp;
1.122 avsm 610: off_t i, amt, statbytes;
1.125 dtucker 611: int fd = -1, haderr, indx;
1.158 dtucker 612: char *last, *name, buf[2048], encname[MAXPATHLEN];
1.65 deraadt 613: int len;
1.1 deraadt 614:
615: for (indx = 0; indx < argc; ++indx) {
1.18 markus 616: name = argv[indx];
1.11 aaron 617: statbytes = 0;
1.65 deraadt 618: len = strlen(name);
619: while (len > 1 && name[len-1] == '/')
620: name[--len] = '\0';
1.158 dtucker 621: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
622: goto syserr;
1.85 markus 623: if (strchr(name, '\n') != NULL) {
1.158 dtucker 624: strnvis(encname, name, sizeof(encname), VIS_NL);
625: name = encname;
1.85 markus 626: }
1.1 deraadt 627: if (fstat(fd, &stb) < 0) {
628: syserr: run_err("%s: %s", name, strerror(errno));
629: goto next;
630: }
1.157 djm 631: unset_nonblock(fd);
1.1 deraadt 632: switch (stb.st_mode & S_IFMT) {
633: case S_IFREG:
634: break;
635: case S_IFDIR:
636: if (iamrecursive) {
637: rsource(name, &stb);
638: goto next;
639: }
640: /* FALLTHROUGH */
641: default:
642: run_err("%s: not a regular file", name);
643: goto next;
644: }
645: if ((last = strrchr(name, '/')) == NULL)
646: last = name;
647: else
648: ++last;
1.11 aaron 649: curfile = last;
1.1 deraadt 650: if (pflag) {
651: /*
652: * Make it compatible with possible future
653: * versions expecting microseconds.
654: */
1.55 deraadt 655: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 656: (u_long) stb.st_mtime,
657: (u_long) stb.st_atime);
1.107 deraadt 658: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 659: if (response() < 0)
660: goto next;
661: }
662: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 663: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 664: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 665: (long long)stb.st_size, last);
1.18 markus 666: if (verbose_mode) {
667: fprintf(stderr, "Sending file modes: %s", buf);
668: }
1.107 deraadt 669: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 670: if (response() < 0)
671: goto next;
1.161 ! djm 672: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 673: next: if (fd != -1) {
674: (void) close(fd);
675: fd = -1;
676: }
1.1 deraadt 677: continue;
678: }
1.97 fgsch 679: if (showprogress)
680: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 ! djm 681: set_nonblock(remout);
1.1 deraadt 682: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
683: amt = bp->cnt;
684: if (i + amt > stb.st_size)
685: amt = stb.st_size - i;
686: if (!haderr) {
1.161 ! djm 687: if (atomicio(read, fd, bp->buf, amt) != amt)
1.122 avsm 688: haderr = errno;
1.1 deraadt 689: }
1.161 ! djm 690: /* Keep writing after error to retain sync */
! 691: if (haderr) {
! 692: (void)atomicio(vwrite, remout, bp->buf, amt);
! 693: continue;
1.1 deraadt 694: }
1.161 ! djm 695: if (scpio(vwrite, remout, bp->buf, amt,
! 696: &statbytes) != amt)
! 697: haderr = errno;
1.1 deraadt 698: }
1.161 ! djm 699: unset_nonblock(remout);
1.18 markus 700: if (showprogress)
1.97 fgsch 701: stop_progress_meter();
1.4 aaron 702:
1.127 deraadt 703: if (fd != -1) {
704: if (close(fd) < 0 && !haderr)
705: haderr = errno;
706: fd = -1;
707: }
1.1 deraadt 708: if (!haderr)
1.107 deraadt 709: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 710: else
711: run_err("%s: %s", name, strerror(haderr));
1.18 markus 712: (void) response();
1.1 deraadt 713: }
714: }
715:
716: void
1.104 djm 717: rsource(char *name, struct stat *statp)
1.1 deraadt 718: {
719: DIR *dirp;
720: struct dirent *dp;
721: char *last, *vect[1], path[1100];
722:
723: if (!(dirp = opendir(name))) {
724: run_err("%s: %s", name, strerror(errno));
725: return;
726: }
727: last = strrchr(name, '/');
728: if (last == 0)
729: last = name;
730: else
731: last++;
732: if (pflag) {
1.55 deraadt 733: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 734: (u_long) statp->st_mtime,
735: (u_long) statp->st_atime);
1.107 deraadt 736: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 737: if (response() < 0) {
738: closedir(dirp);
739: return;
740: }
741: }
1.55 deraadt 742: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 743: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 744: if (verbose_mode)
745: fprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 746: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 747: if (response() < 0) {
748: closedir(dirp);
749: return;
750: }
1.63 stevesk 751: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 752: if (dp->d_ino == 0)
753: continue;
754: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
755: continue;
756: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
757: run_err("%s/%s: name too long", name, dp->d_name);
758: continue;
759: }
1.55 deraadt 760: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 761: vect[0] = path;
762: source(1, vect);
763: }
1.18 markus 764: (void) closedir(dirp);
1.107 deraadt 765: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 766: (void) response();
1.1 deraadt 767: }
768:
769: void
1.99 markus 770: bwlimit(int amount)
771: {
772: static struct timeval bwstart, bwend;
773: static int lamt, thresh = 16384;
1.115 avsm 774: u_int64_t waitlen;
1.99 markus 775: struct timespec ts, rm;
776:
777: if (!timerisset(&bwstart)) {
778: gettimeofday(&bwstart, NULL);
779: return;
780: }
781:
782: lamt += amount;
783: if (lamt < thresh)
784: return;
785:
786: gettimeofday(&bwend, NULL);
787: timersub(&bwend, &bwstart, &bwend);
788: if (!timerisset(&bwend))
789: return;
790:
791: lamt *= 8;
1.115 avsm 792: waitlen = (double)1000000L * lamt / limit_rate;
1.99 markus 793:
1.115 avsm 794: bwstart.tv_sec = waitlen / 1000000L;
795: bwstart.tv_usec = waitlen % 1000000L;
1.99 markus 796:
797: if (timercmp(&bwstart, &bwend, >)) {
798: timersub(&bwstart, &bwend, &bwend);
799:
800: /* Adjust the wait time */
801: if (bwend.tv_sec) {
802: thresh /= 2;
803: if (thresh < 2048)
804: thresh = 2048;
1.161 ! djm 805: } else if (bwend.tv_usec < 10000) {
1.99 markus 806: thresh *= 2;
1.161 ! djm 807: if (thresh > COPY_BUFLEN * 4)
! 808: thresh = COPY_BUFLEN * 4;
1.99 markus 809: }
810:
811: TIMEVAL_TO_TIMESPEC(&bwend, &ts);
812: while (nanosleep(&ts, &rm) == -1) {
813: if (errno != EINTR)
814: break;
815: ts = rm;
816: }
817: }
818:
819: lamt = 0;
820: gettimeofday(&bwstart, NULL);
821: }
822:
823: void
1.104 djm 824: sink(int argc, char **argv)
1.1 deraadt 825: {
826: static BUF buffer;
827: struct stat stb;
1.18 markus 828: enum {
829: YES, NO, DISPLAYED
830: } wrerr;
1.1 deraadt 831: BUF *bp;
1.122 avsm 832: off_t i;
1.124 djm 833: size_t j, count;
1.140 deraadt 834: int amt, exists, first, ofd;
835: mode_t mode, omode, mask;
1.97 fgsch 836: off_t size, statbytes;
1.36 deraadt 837: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 838: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 839: struct timeval tv[2];
1.1 deraadt 840:
1.66 stevesk 841: #define atime tv[0]
842: #define mtime tv[1]
1.118 deraadt 843: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 844:
845: setimes = targisdir = 0;
846: mask = umask(0);
847: if (!pflag)
1.18 markus 848: (void) umask(mask);
1.1 deraadt 849: if (argc != 1) {
850: run_err("ambiguous target");
851: exit(1);
852: }
853: targ = *argv;
854: if (targetshouldbedirectory)
855: verifydir(targ);
1.18 markus 856:
1.107 deraadt 857: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 858: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
859: targisdir = 1;
860: for (first = 1;; first = 0) {
861: cp = buf;
1.122 avsm 862: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 863: return;
864: if (*cp++ == '\n')
865: SCREWUP("unexpected <newline>");
866: do {
1.30 deraadt 867: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 868: SCREWUP("lost connection");
869: *cp++ = ch;
870: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
871: *cp = 0;
1.114 markus 872: if (verbose_mode)
873: fprintf(stderr, "Sink: %s", buf);
1.1 deraadt 874:
875: if (buf[0] == '\01' || buf[0] == '\02') {
876: if (iamremote == 0)
1.107 deraadt 877: (void) atomicio(vwrite, STDERR_FILENO,
1.44 deraadt 878: buf + 1, strlen(buf + 1));
1.1 deraadt 879: if (buf[0] == '\02')
880: exit(1);
881: ++errs;
882: continue;
883: }
884: if (buf[0] == 'E') {
1.107 deraadt 885: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 886: return;
887: }
888: if (ch == '\n')
889: *--cp = 0;
890:
891: cp = buf;
892: if (*cp == 'T') {
893: setimes++;
894: cp++;
1.66 stevesk 895: mtime.tv_sec = strtol(cp, &cp, 10);
896: if (!cp || *cp++ != ' ')
1.1 deraadt 897: SCREWUP("mtime.sec not delimited");
1.66 stevesk 898: mtime.tv_usec = strtol(cp, &cp, 10);
899: if (!cp || *cp++ != ' ')
1.1 deraadt 900: SCREWUP("mtime.usec not delimited");
1.66 stevesk 901: atime.tv_sec = strtol(cp, &cp, 10);
902: if (!cp || *cp++ != ' ')
1.1 deraadt 903: SCREWUP("atime.sec not delimited");
1.66 stevesk 904: atime.tv_usec = strtol(cp, &cp, 10);
905: if (!cp || *cp++ != '\0')
1.1 deraadt 906: SCREWUP("atime.usec not delimited");
1.107 deraadt 907: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 908: continue;
909: }
910: if (*cp != 'C' && *cp != 'D') {
911: /*
912: * Check for the case "rcp remote:foo\* local:bar".
913: * In this case, the line "No match." can be returned
914: * by the shell before the rcp command on the remote is
915: * executed so the ^Aerror_message convention isn't
916: * followed.
917: */
918: if (first) {
919: run_err("%s", cp);
920: exit(1);
921: }
922: SCREWUP("expected control record");
923: }
924: mode = 0;
925: for (++cp; cp < buf + 5; cp++) {
926: if (*cp < '0' || *cp > '7')
927: SCREWUP("bad mode");
928: mode = (mode << 3) | (*cp - '0');
929: }
930: if (*cp++ != ' ')
931: SCREWUP("mode not delimited");
932:
1.63 stevesk 933: for (size = 0; isdigit(*cp);)
1.1 deraadt 934: size = size * 10 + (*cp++ - '0');
935: if (*cp++ != ' ')
936: SCREWUP("size not delimited");
1.114 markus 937: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
938: run_err("error: unexpected filename: %s", cp);
939: exit(1);
940: }
1.1 deraadt 941: if (targisdir) {
942: static char *namebuf;
1.124 djm 943: static size_t cursize;
1.1 deraadt 944: size_t need;
945:
946: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 947: if (need > cursize) {
1.58 danh 948: if (namebuf)
949: xfree(namebuf);
1.18 markus 950: namebuf = xmalloc(need);
1.55 deraadt 951: cursize = need;
952: }
953: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 954: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 955: np = namebuf;
956: } else
957: np = targ;
1.12 aaron 958: curfile = cp;
1.1 deraadt 959: exists = stat(np, &stb) == 0;
960: if (buf[0] == 'D') {
961: int mod_flag = pflag;
1.114 markus 962: if (!iamrecursive)
963: SCREWUP("received directory without -r");
1.1 deraadt 964: if (exists) {
965: if (!S_ISDIR(stb.st_mode)) {
966: errno = ENOTDIR;
967: goto bad;
968: }
969: if (pflag)
1.18 markus 970: (void) chmod(np, mode);
1.1 deraadt 971: } else {
1.18 markus 972: /* Handle copying from a read-only
973: directory */
1.1 deraadt 974: mod_flag = 1;
975: if (mkdir(np, mode | S_IRWXU) < 0)
976: goto bad;
977: }
1.58 danh 978: vect[0] = xstrdup(np);
1.1 deraadt 979: sink(1, vect);
980: if (setimes) {
981: setimes = 0;
1.59 deraadt 982: if (utimes(vect[0], tv) < 0)
1.18 markus 983: run_err("%s: set times: %s",
1.59 deraadt 984: vect[0], strerror(errno));
1.1 deraadt 985: }
986: if (mod_flag)
1.59 deraadt 987: (void) chmod(vect[0], mode);
988: if (vect[0])
989: xfree(vect[0]);
1.1 deraadt 990: continue;
991: }
992: omode = mode;
993: mode |= S_IWRITE;
1.71 markus 994: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 995: bad: run_err("%s: %s", np, strerror(errno));
996: continue;
997: }
1.107 deraadt 998: (void) atomicio(vwrite, remout, "", 1);
1.161 ! djm 999: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1000: (void) close(ofd);
1.1 deraadt 1001: continue;
1002: }
1003: cp = bp->buf;
1004: wrerr = NO;
1.7 deraadt 1005:
1.12 aaron 1006: statbytes = 0;
1.97 fgsch 1007: if (showprogress)
1008: start_progress_meter(curfile, size, &statbytes);
1.161 ! djm 1009: set_nonblock(remin);
! 1010: for (count = i = 0; i < size; i += bp->cnt) {
! 1011: amt = bp->cnt;
1.1 deraadt 1012: if (i + amt > size)
1013: amt = size - i;
1014: count += amt;
1015: do {
1.161 ! djm 1016: j = scpio(read, remin, cp, amt, &statbytes);
1.122 avsm 1017: if (j == 0) {
1.161 ! djm 1018: run_err("%s", j != EPIPE ?
! 1019: strerror(errno) :
1.63 stevesk 1020: "dropped connection");
1.1 deraadt 1021: exit(1);
1022: }
1023: amt -= j;
1024: cp += j;
1025: } while (amt > 0);
1.112 djm 1026:
1.1 deraadt 1027: if (count == bp->cnt) {
1028: /* Keep reading so we stay sync'd up. */
1029: if (wrerr == NO) {
1.122 avsm 1030: if (atomicio(vwrite, ofd, bp->buf,
1031: count) != count) {
1.1 deraadt 1032: wrerr = YES;
1.122 avsm 1033: wrerrno = errno;
1.1 deraadt 1034: }
1035: }
1036: count = 0;
1037: cp = bp->buf;
1038: }
1039: }
1.161 ! djm 1040: unset_nonblock(remin);
1.7 deraadt 1041: if (showprogress)
1.97 fgsch 1042: stop_progress_meter();
1.1 deraadt 1043: if (count != 0 && wrerr == NO &&
1.122 avsm 1044: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1045: wrerr = YES;
1.122 avsm 1046: wrerrno = errno;
1.1 deraadt 1047: }
1.159 djm 1048: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1049: ftruncate(ofd, size) != 0) {
1.1 deraadt 1050: run_err("%s: truncate: %s", np, strerror(errno));
1051: wrerr = DISPLAYED;
1052: }
1053: if (pflag) {
1054: if (exists || omode != mode)
1.116 dtucker 1055: if (fchmod(ofd, omode)) {
1.1 deraadt 1056: run_err("%s: set mode: %s",
1.63 stevesk 1057: np, strerror(errno));
1.116 dtucker 1058: wrerr = DISPLAYED;
1059: }
1.1 deraadt 1060: } else {
1061: if (!exists && omode != mode)
1.116 dtucker 1062: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1063: run_err("%s: set mode: %s",
1.63 stevesk 1064: np, strerror(errno));
1.116 dtucker 1065: wrerr = DISPLAYED;
1066: }
1.1 deraadt 1067: }
1.33 provos 1068: if (close(ofd) == -1) {
1069: wrerr = YES;
1070: wrerrno = errno;
1071: }
1.18 markus 1072: (void) response();
1.1 deraadt 1073: if (setimes && wrerr == NO) {
1074: setimes = 0;
1.40 markus 1075: if (utimes(np, tv) < 0) {
1.1 deraadt 1076: run_err("%s: set times: %s",
1.63 stevesk 1077: np, strerror(errno));
1.1 deraadt 1078: wrerr = DISPLAYED;
1079: }
1080: }
1.18 markus 1081: switch (wrerr) {
1.1 deraadt 1082: case YES:
1083: run_err("%s: %s", np, strerror(wrerrno));
1084: break;
1085: case NO:
1.107 deraadt 1086: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1087: break;
1088: case DISPLAYED:
1089: break;
1090: }
1091: }
1092: screwup:
1093: run_err("protocol error: %s", why);
1094: exit(1);
1095: }
1096:
1097: int
1.86 itojun 1098: response(void)
1.1 deraadt 1099: {
1100: char ch, *cp, resp, rbuf[2048];
1101:
1.30 deraadt 1102: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1103: lostconn(0);
1104:
1105: cp = rbuf;
1.18 markus 1106: switch (resp) {
1107: case 0: /* ok */
1.1 deraadt 1108: return (0);
1109: default:
1110: *cp++ = resp;
1111: /* FALLTHROUGH */
1.18 markus 1112: case 1: /* error, followed by error msg */
1113: case 2: /* fatal error, "" */
1.1 deraadt 1114: do {
1.30 deraadt 1115: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1116: lostconn(0);
1117: *cp++ = ch;
1118: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1119:
1120: if (!iamremote)
1.107 deraadt 1121: (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 1122: ++errs;
1123: if (resp == 1)
1124: return (-1);
1125: exit(1);
1126: }
1127: /* NOTREACHED */
1128: }
1129:
1130: void
1.86 itojun 1131: usage(void)
1.1 deraadt 1132: {
1.83 stevesk 1133: (void) fprintf(stderr,
1.110 jmc 1134: "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1135: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1136: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1137: exit(1);
1138: }
1139:
1140: void
1.18 markus 1141: run_err(const char *fmt,...)
1.1 deraadt 1142: {
1143: static FILE *fp;
1144: va_list ap;
1145:
1146: ++errs;
1.136 biorn 1147: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1148: (void) fprintf(fp, "%c", 0x01);
1149: (void) fprintf(fp, "scp: ");
1150: va_start(ap, fmt);
1151: (void) vfprintf(fp, fmt, ap);
1152: va_end(ap);
1153: (void) fprintf(fp, "\n");
1154: (void) fflush(fp);
1155: }
1.18 markus 1156:
1157: if (!iamremote) {
1.73 markus 1158: va_start(ap, fmt);
1.18 markus 1159: vfprintf(stderr, fmt, ap);
1.73 markus 1160: va_end(ap);
1.18 markus 1161: fprintf(stderr, "\n");
1162: }
1.1 deraadt 1163: }
1164:
1165: void
1.104 djm 1166: verifydir(char *cp)
1.1 deraadt 1167: {
1168: struct stat stb;
1169:
1170: if (!stat(cp, &stb)) {
1171: if (S_ISDIR(stb.st_mode))
1172: return;
1173: errno = ENOTDIR;
1174: }
1175: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1176: killchild(0);
1.1 deraadt 1177: }
1178:
1179: int
1.104 djm 1180: okname(char *cp0)
1.1 deraadt 1181: {
1182: int c;
1183: char *cp;
1184:
1185: cp = cp0;
1186: do {
1.75 deraadt 1187: c = (int)*cp;
1.1 deraadt 1188: if (c & 0200)
1189: goto bad;
1.101 markus 1190: if (!isalpha(c) && !isdigit(c)) {
1191: switch (c) {
1192: case '\'':
1193: case '"':
1194: case '`':
1195: case ' ':
1196: case '#':
1197: goto bad;
1198: default:
1199: break;
1200: }
1201: }
1.1 deraadt 1202: } while (*++cp);
1203: return (1);
1204:
1.25 markus 1205: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1206: return (0);
1207: }
1208:
1209: BUF *
1.104 djm 1210: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1211: {
1212: size_t size;
1213: struct stat stb;
1214:
1215: if (fstat(fd, &stb) < 0) {
1216: run_err("fstat: %s", strerror(errno));
1217: return (0);
1218: }
1.95 markus 1219: size = roundup(stb.st_blksize, blksize);
1220: if (size == 0)
1.18 markus 1221: size = blksize;
1.1 deraadt 1222: if (bp->cnt >= size)
1223: return (bp);
1.18 markus 1224: if (bp->buf == NULL)
1225: bp->buf = xmalloc(size);
1226: else
1.138 djm 1227: bp->buf = xrealloc(bp->buf, 1, size);
1.81 markus 1228: memset(bp->buf, 0, size);
1.1 deraadt 1229: bp->cnt = size;
1230: return (bp);
1231: }
1232:
1233: void
1.104 djm 1234: lostconn(int signo)
1.1 deraadt 1235: {
1236: if (!iamremote)
1.74 markus 1237: write(STDERR_FILENO, "lost connection\n", 16);
1238: if (signo)
1239: _exit(1);
1240: else
1241: exit(1);
1.4 aaron 1242: }
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