Annotation of src/usr.bin/ssh/scp.c, Revision 1.166
1.166 ! millert 1: /* $OpenBSD: scp.c,v 1.165 2009/12/20 07:28:36 guenther 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:
1.166 ! 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;
1.99 markus 305: double speed;
1.145 djm 306: char *targ, *endp, **newargv;
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));
1.41 markus 320: args.list = NULL;
1.129 djm 321: addargs(&args, "%s", ssh_program);
1.70 mouring 322: addargs(&args, "-x");
1.82 stevesk 323: addargs(&args, "-oForwardAgent no");
1.128 reyk 324: addargs(&args, "-oPermitLocalCommand no");
1.84 stevesk 325: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 326:
1.1 deraadt 327: fflag = tflag = 0;
1.100 markus 328: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
1.18 markus 329: switch (ch) {
330: /* User-visible flags. */
1.100 markus 331: case '1':
332: case '2':
1.23 markus 333: case '4':
1.41 markus 334: case '6':
335: case 'C':
1.70 mouring 336: addargs(&args, "-%c", ch);
1.41 markus 337: break;
338: case 'o':
339: case 'c':
340: case 'i':
1.83 stevesk 341: case 'F':
1.165 guenther 342: addargs(&args, "-%c", ch);
343: addargs(&args, "%s", optarg);
1.23 markus 344: break;
1.41 markus 345: case 'P':
1.165 guenther 346: addargs(&args, "-p");
347: addargs(&args, "%s", optarg);
1.41 markus 348: break;
349: case 'B':
1.70 mouring 350: addargs(&args, "-oBatchmode yes");
1.23 markus 351: break;
1.99 markus 352: case 'l':
353: speed = strtod(optarg, &endp);
354: if (speed <= 0 || *endp != '\0')
355: usage();
1.113 djm 356: limit_rate = speed * 1024;
1.99 markus 357: break;
1.1 deraadt 358: case 'p':
359: pflag = 1;
360: break;
361: case 'r':
362: iamrecursive = 1;
363: break;
1.34 deraadt 364: case 'S':
1.41 markus 365: ssh_program = xstrdup(optarg);
366: break;
367: case 'v':
1.72 markus 368: addargs(&args, "-v");
1.41 markus 369: verbose_mode = 1;
370: break;
371: case 'q':
1.111 dtucker 372: addargs(&args, "-q");
1.41 markus 373: showprogress = 0;
1.34 deraadt 374: break;
375:
1.18 markus 376: /* Server options. */
1.1 deraadt 377: case 'd':
378: targetshouldbedirectory = 1;
379: break;
1.18 markus 380: case 'f': /* "from" */
1.1 deraadt 381: iamremote = 1;
382: fflag = 1;
383: break;
1.18 markus 384: case 't': /* "to" */
1.1 deraadt 385: iamremote = 1;
386: tflag = 1;
387: break;
388: default:
389: usage();
390: }
391: argc -= optind;
392: argv += optind;
393:
394: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 395: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 396:
1.156 djm 397: if (!isatty(STDOUT_FILENO))
1.7 deraadt 398: showprogress = 0;
399:
1.1 deraadt 400: remin = STDIN_FILENO;
401: remout = STDOUT_FILENO;
402:
1.52 stevesk 403: if (fflag) {
1.18 markus 404: /* Follow "protocol", send data. */
405: (void) response();
1.1 deraadt 406: source(argc, argv);
407: exit(errs != 0);
408: }
1.18 markus 409: if (tflag) {
410: /* Receive data. */
1.1 deraadt 411: sink(argc, argv);
412: exit(errs != 0);
413: }
414: if (argc < 2)
415: usage();
416: if (argc > 2)
417: targetshouldbedirectory = 1;
418:
419: remin = remout = -1;
1.92 markus 420: do_cmd_pid = -1;
1.1 deraadt 421: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 422: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
423: verbose_mode ? " -v" : "",
1.35 deraadt 424: iamrecursive ? " -r" : "", pflag ? " -p" : "",
425: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 426:
1.18 markus 427: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 428:
429: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
430: toremote(targ, argc, argv);
431: else {
432: if (targetshouldbedirectory)
433: verifydir(argv[argc - 1]);
1.130 djm 434: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 435: }
436: /*
437: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 438: * and no error has occurred yet
1.92 markus 439: */
440: if (do_cmd_pid != -1 && errs == 0) {
441: if (remin != -1)
442: (void) close(remin);
443: if (remout != -1)
444: (void) close(remout);
445: if (waitpid(do_cmd_pid, &status, 0) == -1)
446: errs = 1;
447: else {
448: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
449: errs = 1;
450: }
1.1 deraadt 451: }
452: exit(errs != 0);
453: }
454:
1.161 djm 455: /*
456: * atomicio-like wrapper that also applies bandwidth limits and updates
457: * the progressmeter counter.
458: */
459: static size_t
460: scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
461: {
462: u_char *p = (u_char *)_p;
463: size_t offset;
464: ssize_t r;
465: struct pollfd pfd;
466:
467: pfd.fd = fd;
468: pfd.events = f == read ? POLLIN : POLLOUT;
469: for (offset = 0; offset < l;) {
470: r = f(fd, p + offset, l - offset);
471: if (r == 0) {
472: errno = EPIPE;
473: return offset;
474: }
475: if (r < 0) {
476: if (errno == EINTR)
477: continue;
478: if (errno == EAGAIN) {
479: (void)poll(&pfd, 1, -1); /* Ignore errors */
480: continue;
481: }
482: return offset;
483: }
484: offset += (size_t)r;
485: *c += (off_t)r;
486: if (limit_rate)
487: bwlimit(r);
488: }
489: return offset;
490: }
491:
1.1 deraadt 492: void
1.104 djm 493: toremote(char *targ, int argc, char **argv)
1.1 deraadt 494: {
1.120 deraadt 495: char *bp, *host, *src, *suser, *thost, *tuser, *arg;
1.129 djm 496: arglist alist;
1.140 deraadt 497: int i;
1.129 djm 498:
499: memset(&alist, '\0', sizeof(alist));
500: alist.list = NULL;
1.1 deraadt 501:
502: *targ++ = 0;
503: if (*targ == 0)
504: targ = ".";
505:
1.121 djm 506: arg = xstrdup(argv[argc - 1]);
1.120 deraadt 507: if ((thost = strrchr(arg, '@'))) {
1.1 deraadt 508: /* user@host */
509: *thost++ = 0;
1.120 deraadt 510: tuser = arg;
1.1 deraadt 511: if (*tuser == '\0')
512: tuser = NULL;
513: } else {
1.120 deraadt 514: thost = arg;
1.1 deraadt 515: tuser = NULL;
516: }
517:
1.129 djm 518: if (tuser != NULL && !okname(tuser)) {
519: xfree(arg);
520: return;
521: }
522:
1.1 deraadt 523: for (i = 0; i < argc - 1; i++) {
524: src = colon(argv[i]);
1.18 markus 525: if (src) { /* remote to remote */
1.129 djm 526: freeargs(&alist);
527: addargs(&alist, "%s", ssh_program);
528: if (verbose_mode)
529: addargs(&alist, "-v");
530: addargs(&alist, "-x");
531: addargs(&alist, "-oClearAllForwardings yes");
532: addargs(&alist, "-n");
533:
1.1 deraadt 534: *src++ = 0;
535: if (*src == 0)
536: src = ".";
1.94 markus 537: host = strrchr(argv[i], '@');
1.129 djm 538:
1.1 deraadt 539: if (host) {
540: *host++ = 0;
1.23 markus 541: host = cleanhostname(host);
1.1 deraadt 542: suser = argv[i];
543: if (*suser == '\0')
544: suser = pwd->pw_name;
1.129 djm 545: else if (!okname(suser))
1.101 markus 546: continue;
1.129 djm 547: addargs(&alist, "-l");
548: addargs(&alist, "%s", suser);
1.23 markus 549: } else {
550: host = cleanhostname(argv[i]);
551: }
1.165 guenther 552: addargs(&alist, "--");
1.129 djm 553: addargs(&alist, "%s", host);
554: addargs(&alist, "%s", cmd);
555: addargs(&alist, "%s", src);
556: addargs(&alist, "%s%s%s:%s",
557: tuser ? tuser : "", tuser ? "@" : "",
558: thost, targ);
559: if (do_local_cmd(&alist) != 0)
1.109 markus 560: errs = 1;
1.18 markus 561: } else { /* local to remote */
1.1 deraadt 562: if (remin == -1) {
1.165 guenther 563: xasprintf(&bp, "%s -t -- %s", cmd, targ);
1.23 markus 564: host = cleanhostname(thost);
1.35 deraadt 565: if (do_cmd(host, tuser, bp, &remin,
1.140 deraadt 566: &remout) < 0)
1.18 markus 567: exit(1);
1.1 deraadt 568: if (response() < 0)
569: exit(1);
1.18 markus 570: (void) xfree(bp);
1.1 deraadt 571: }
1.18 markus 572: source(1, argv + i);
1.1 deraadt 573: }
574: }
1.142 markus 575: xfree(arg);
1.1 deraadt 576: }
577:
578: void
1.104 djm 579: tolocal(int argc, char **argv)
1.1 deraadt 580: {
581: char *bp, *host, *src, *suser;
1.129 djm 582: arglist alist;
1.140 deraadt 583: int i;
1.129 djm 584:
585: memset(&alist, '\0', sizeof(alist));
586: alist.list = NULL;
1.1 deraadt 587:
588: for (i = 0; i < argc - 1; i++) {
1.18 markus 589: if (!(src = colon(argv[i]))) { /* Local to local. */
1.129 djm 590: freeargs(&alist);
591: addargs(&alist, "%s", _PATH_CP);
592: if (iamrecursive)
593: addargs(&alist, "-r");
594: if (pflag)
595: addargs(&alist, "-p");
1.165 guenther 596: addargs(&alist, "--");
1.129 djm 597: addargs(&alist, "%s", argv[i]);
598: addargs(&alist, "%s", argv[argc-1]);
599: if (do_local_cmd(&alist))
1.1 deraadt 600: ++errs;
601: continue;
602: }
603: *src++ = 0;
604: if (*src == 0)
605: src = ".";
1.94 markus 606: if ((host = strrchr(argv[i], '@')) == NULL) {
1.1 deraadt 607: host = argv[i];
608: suser = NULL;
609: } else {
610: *host++ = 0;
611: suser = argv[i];
612: if (*suser == '\0')
613: suser = pwd->pw_name;
614: }
1.23 markus 615: host = cleanhostname(host);
1.165 guenther 616: xasprintf(&bp, "%s -f -- %s", cmd, src);
1.140 deraadt 617: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
1.18 markus 618: (void) xfree(bp);
619: ++errs;
620: continue;
1.1 deraadt 621: }
1.18 markus 622: xfree(bp);
1.1 deraadt 623: sink(1, argv + argc - 1);
1.18 markus 624: (void) close(remin);
1.1 deraadt 625: remin = remout = -1;
626: }
627: }
628:
629: void
1.104 djm 630: source(int argc, char **argv)
1.1 deraadt 631: {
632: struct stat stb;
633: static BUF buffer;
634: BUF *bp;
1.163 dtucker 635: off_t i, statbytes;
636: size_t amt;
1.125 dtucker 637: int fd = -1, haderr, indx;
1.158 dtucker 638: char *last, *name, buf[2048], encname[MAXPATHLEN];
1.65 deraadt 639: int len;
1.1 deraadt 640:
641: for (indx = 0; indx < argc; ++indx) {
1.18 markus 642: name = argv[indx];
1.11 aaron 643: statbytes = 0;
1.65 deraadt 644: len = strlen(name);
645: while (len > 1 && name[len-1] == '/')
646: name[--len] = '\0';
1.158 dtucker 647: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
648: goto syserr;
1.85 markus 649: if (strchr(name, '\n') != NULL) {
1.158 dtucker 650: strnvis(encname, name, sizeof(encname), VIS_NL);
651: name = encname;
1.85 markus 652: }
1.1 deraadt 653: if (fstat(fd, &stb) < 0) {
654: syserr: run_err("%s: %s", name, strerror(errno));
655: goto next;
656: }
1.163 dtucker 657: if (stb.st_size < 0) {
658: run_err("%s: %s", name, "Negative file size");
659: goto next;
660: }
1.157 djm 661: unset_nonblock(fd);
1.1 deraadt 662: switch (stb.st_mode & S_IFMT) {
663: case S_IFREG:
664: break;
665: case S_IFDIR:
666: if (iamrecursive) {
667: rsource(name, &stb);
668: goto next;
669: }
670: /* FALLTHROUGH */
671: default:
672: run_err("%s: not a regular file", name);
673: goto next;
674: }
675: if ((last = strrchr(name, '/')) == NULL)
676: last = name;
677: else
678: ++last;
1.11 aaron 679: curfile = last;
1.1 deraadt 680: if (pflag) {
681: /*
682: * Make it compatible with possible future
683: * versions expecting microseconds.
684: */
1.55 deraadt 685: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.162 dtucker 686: (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
687: (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
688: if (verbose_mode) {
689: fprintf(stderr, "File mtime %ld atime %ld\n",
690: (long)stb.st_mtime, (long)stb.st_atime);
691: fprintf(stderr, "Sending file timestamps: %s",
692: buf);
693: }
1.107 deraadt 694: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 695: if (response() < 0)
696: goto next;
697: }
698: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 699: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 700: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 701: (long long)stb.st_size, last);
1.18 markus 702: if (verbose_mode) {
703: fprintf(stderr, "Sending file modes: %s", buf);
704: }
1.107 deraadt 705: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 706: if (response() < 0)
707: goto next;
1.161 djm 708: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 709: next: if (fd != -1) {
710: (void) close(fd);
711: fd = -1;
712: }
1.1 deraadt 713: continue;
714: }
1.97 fgsch 715: if (showprogress)
716: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 717: set_nonblock(remout);
1.1 deraadt 718: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
719: amt = bp->cnt;
1.163 dtucker 720: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 721: amt = stb.st_size - i;
722: if (!haderr) {
1.161 djm 723: if (atomicio(read, fd, bp->buf, amt) != amt)
1.122 avsm 724: haderr = errno;
1.1 deraadt 725: }
1.161 djm 726: /* Keep writing after error to retain sync */
727: if (haderr) {
728: (void)atomicio(vwrite, remout, bp->buf, amt);
729: continue;
1.1 deraadt 730: }
1.161 djm 731: if (scpio(vwrite, remout, bp->buf, amt,
732: &statbytes) != amt)
733: haderr = errno;
1.1 deraadt 734: }
1.161 djm 735: unset_nonblock(remout);
1.18 markus 736: if (showprogress)
1.97 fgsch 737: stop_progress_meter();
1.4 aaron 738:
1.127 deraadt 739: if (fd != -1) {
740: if (close(fd) < 0 && !haderr)
741: haderr = errno;
742: fd = -1;
743: }
1.1 deraadt 744: if (!haderr)
1.107 deraadt 745: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 746: else
747: run_err("%s: %s", name, strerror(haderr));
1.18 markus 748: (void) response();
1.1 deraadt 749: }
750: }
751:
752: void
1.104 djm 753: rsource(char *name, struct stat *statp)
1.1 deraadt 754: {
755: DIR *dirp;
756: struct dirent *dp;
757: char *last, *vect[1], path[1100];
758:
759: if (!(dirp = opendir(name))) {
760: run_err("%s: %s", name, strerror(errno));
761: return;
762: }
763: last = strrchr(name, '/');
764: if (last == 0)
765: last = name;
766: else
767: last++;
768: if (pflag) {
1.55 deraadt 769: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 770: (u_long) statp->st_mtime,
771: (u_long) statp->st_atime);
1.107 deraadt 772: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 773: if (response() < 0) {
774: closedir(dirp);
775: return;
776: }
777: }
1.55 deraadt 778: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 779: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 780: if (verbose_mode)
781: fprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 782: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 783: if (response() < 0) {
784: closedir(dirp);
785: return;
786: }
1.63 stevesk 787: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 788: if (dp->d_ino == 0)
789: continue;
790: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
791: continue;
792: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
793: run_err("%s/%s: name too long", name, dp->d_name);
794: continue;
795: }
1.55 deraadt 796: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 797: vect[0] = path;
798: source(1, vect);
799: }
1.18 markus 800: (void) closedir(dirp);
1.107 deraadt 801: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 802: (void) response();
1.1 deraadt 803: }
804:
805: void
1.99 markus 806: bwlimit(int amount)
807: {
808: static struct timeval bwstart, bwend;
809: static int lamt, thresh = 16384;
1.115 avsm 810: u_int64_t waitlen;
1.99 markus 811: struct timespec ts, rm;
812:
813: if (!timerisset(&bwstart)) {
814: gettimeofday(&bwstart, NULL);
815: return;
816: }
817:
818: lamt += amount;
819: if (lamt < thresh)
820: return;
821:
822: gettimeofday(&bwend, NULL);
823: timersub(&bwend, &bwstart, &bwend);
824: if (!timerisset(&bwend))
825: return;
826:
827: lamt *= 8;
1.115 avsm 828: waitlen = (double)1000000L * lamt / limit_rate;
1.99 markus 829:
1.115 avsm 830: bwstart.tv_sec = waitlen / 1000000L;
831: bwstart.tv_usec = waitlen % 1000000L;
1.99 markus 832:
833: if (timercmp(&bwstart, &bwend, >)) {
834: timersub(&bwstart, &bwend, &bwend);
835:
836: /* Adjust the wait time */
837: if (bwend.tv_sec) {
838: thresh /= 2;
839: if (thresh < 2048)
840: thresh = 2048;
1.161 djm 841: } else if (bwend.tv_usec < 10000) {
1.99 markus 842: thresh *= 2;
1.161 djm 843: if (thresh > COPY_BUFLEN * 4)
844: thresh = COPY_BUFLEN * 4;
1.99 markus 845: }
846:
847: TIMEVAL_TO_TIMESPEC(&bwend, &ts);
848: while (nanosleep(&ts, &rm) == -1) {
849: if (errno != EINTR)
850: break;
851: ts = rm;
852: }
853: }
854:
855: lamt = 0;
856: gettimeofday(&bwstart, NULL);
857: }
858:
859: void
1.104 djm 860: sink(int argc, char **argv)
1.1 deraadt 861: {
862: static BUF buffer;
863: struct stat stb;
1.18 markus 864: enum {
865: YES, NO, DISPLAYED
866: } wrerr;
1.1 deraadt 867: BUF *bp;
1.122 avsm 868: off_t i;
1.124 djm 869: size_t j, count;
1.140 deraadt 870: int amt, exists, first, ofd;
871: mode_t mode, omode, mask;
1.97 fgsch 872: off_t size, statbytes;
1.36 deraadt 873: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 874: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 875: struct timeval tv[2];
1.1 deraadt 876:
1.66 stevesk 877: #define atime tv[0]
878: #define mtime tv[1]
1.118 deraadt 879: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 880:
881: setimes = targisdir = 0;
882: mask = umask(0);
883: if (!pflag)
1.18 markus 884: (void) umask(mask);
1.1 deraadt 885: if (argc != 1) {
886: run_err("ambiguous target");
887: exit(1);
888: }
889: targ = *argv;
890: if (targetshouldbedirectory)
891: verifydir(targ);
1.18 markus 892:
1.107 deraadt 893: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 894: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
895: targisdir = 1;
896: for (first = 1;; first = 0) {
897: cp = buf;
1.122 avsm 898: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 899: return;
900: if (*cp++ == '\n')
901: SCREWUP("unexpected <newline>");
902: do {
1.30 deraadt 903: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 904: SCREWUP("lost connection");
905: *cp++ = ch;
906: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
907: *cp = 0;
1.114 markus 908: if (verbose_mode)
909: fprintf(stderr, "Sink: %s", buf);
1.1 deraadt 910:
911: if (buf[0] == '\01' || buf[0] == '\02') {
912: if (iamremote == 0)
1.107 deraadt 913: (void) atomicio(vwrite, STDERR_FILENO,
1.44 deraadt 914: buf + 1, strlen(buf + 1));
1.1 deraadt 915: if (buf[0] == '\02')
916: exit(1);
917: ++errs;
918: continue;
919: }
920: if (buf[0] == 'E') {
1.107 deraadt 921: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 922: return;
923: }
924: if (ch == '\n')
925: *--cp = 0;
926:
927: cp = buf;
928: if (*cp == 'T') {
929: setimes++;
930: cp++;
1.66 stevesk 931: mtime.tv_sec = strtol(cp, &cp, 10);
932: if (!cp || *cp++ != ' ')
1.1 deraadt 933: SCREWUP("mtime.sec not delimited");
1.66 stevesk 934: mtime.tv_usec = strtol(cp, &cp, 10);
935: if (!cp || *cp++ != ' ')
1.1 deraadt 936: SCREWUP("mtime.usec not delimited");
1.66 stevesk 937: atime.tv_sec = strtol(cp, &cp, 10);
938: if (!cp || *cp++ != ' ')
1.1 deraadt 939: SCREWUP("atime.sec not delimited");
1.66 stevesk 940: atime.tv_usec = strtol(cp, &cp, 10);
941: if (!cp || *cp++ != '\0')
1.1 deraadt 942: SCREWUP("atime.usec not delimited");
1.107 deraadt 943: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 944: continue;
945: }
946: if (*cp != 'C' && *cp != 'D') {
947: /*
948: * Check for the case "rcp remote:foo\* local:bar".
949: * In this case, the line "No match." can be returned
950: * by the shell before the rcp command on the remote is
951: * executed so the ^Aerror_message convention isn't
952: * followed.
953: */
954: if (first) {
955: run_err("%s", cp);
956: exit(1);
957: }
958: SCREWUP("expected control record");
959: }
960: mode = 0;
961: for (++cp; cp < buf + 5; cp++) {
962: if (*cp < '0' || *cp > '7')
963: SCREWUP("bad mode");
964: mode = (mode << 3) | (*cp - '0');
965: }
966: if (*cp++ != ' ')
967: SCREWUP("mode not delimited");
968:
1.63 stevesk 969: for (size = 0; isdigit(*cp);)
1.1 deraadt 970: size = size * 10 + (*cp++ - '0');
971: if (*cp++ != ' ')
972: SCREWUP("size not delimited");
1.114 markus 973: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
974: run_err("error: unexpected filename: %s", cp);
975: exit(1);
976: }
1.1 deraadt 977: if (targisdir) {
978: static char *namebuf;
1.124 djm 979: static size_t cursize;
1.1 deraadt 980: size_t need;
981:
982: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 983: if (need > cursize) {
1.58 danh 984: if (namebuf)
985: xfree(namebuf);
1.18 markus 986: namebuf = xmalloc(need);
1.55 deraadt 987: cursize = need;
988: }
989: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 990: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 991: np = namebuf;
992: } else
993: np = targ;
1.12 aaron 994: curfile = cp;
1.1 deraadt 995: exists = stat(np, &stb) == 0;
996: if (buf[0] == 'D') {
997: int mod_flag = pflag;
1.114 markus 998: if (!iamrecursive)
999: SCREWUP("received directory without -r");
1.1 deraadt 1000: if (exists) {
1001: if (!S_ISDIR(stb.st_mode)) {
1002: errno = ENOTDIR;
1003: goto bad;
1004: }
1005: if (pflag)
1.18 markus 1006: (void) chmod(np, mode);
1.1 deraadt 1007: } else {
1.18 markus 1008: /* Handle copying from a read-only
1009: directory */
1.1 deraadt 1010: mod_flag = 1;
1011: if (mkdir(np, mode | S_IRWXU) < 0)
1012: goto bad;
1013: }
1.58 danh 1014: vect[0] = xstrdup(np);
1.1 deraadt 1015: sink(1, vect);
1016: if (setimes) {
1017: setimes = 0;
1.59 deraadt 1018: if (utimes(vect[0], tv) < 0)
1.18 markus 1019: run_err("%s: set times: %s",
1.59 deraadt 1020: vect[0], strerror(errno));
1.1 deraadt 1021: }
1022: if (mod_flag)
1.59 deraadt 1023: (void) chmod(vect[0], mode);
1024: if (vect[0])
1025: xfree(vect[0]);
1.1 deraadt 1026: continue;
1027: }
1028: omode = mode;
1029: mode |= S_IWRITE;
1.71 markus 1030: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1031: bad: run_err("%s: %s", np, strerror(errno));
1032: continue;
1033: }
1.107 deraadt 1034: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1035: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1036: (void) close(ofd);
1.1 deraadt 1037: continue;
1038: }
1039: cp = bp->buf;
1040: wrerr = NO;
1.7 deraadt 1041:
1.12 aaron 1042: statbytes = 0;
1.97 fgsch 1043: if (showprogress)
1044: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1045: set_nonblock(remin);
1046: for (count = i = 0; i < size; i += bp->cnt) {
1047: amt = bp->cnt;
1.1 deraadt 1048: if (i + amt > size)
1049: amt = size - i;
1050: count += amt;
1051: do {
1.161 djm 1052: j = scpio(read, remin, cp, amt, &statbytes);
1.122 avsm 1053: if (j == 0) {
1.161 djm 1054: run_err("%s", j != EPIPE ?
1055: strerror(errno) :
1.63 stevesk 1056: "dropped connection");
1.1 deraadt 1057: exit(1);
1058: }
1059: amt -= j;
1060: cp += j;
1061: } while (amt > 0);
1.112 djm 1062:
1.1 deraadt 1063: if (count == bp->cnt) {
1064: /* Keep reading so we stay sync'd up. */
1065: if (wrerr == NO) {
1.122 avsm 1066: if (atomicio(vwrite, ofd, bp->buf,
1067: count) != count) {
1.1 deraadt 1068: wrerr = YES;
1.122 avsm 1069: wrerrno = errno;
1.1 deraadt 1070: }
1071: }
1072: count = 0;
1073: cp = bp->buf;
1074: }
1075: }
1.161 djm 1076: unset_nonblock(remin);
1.7 deraadt 1077: if (showprogress)
1.97 fgsch 1078: stop_progress_meter();
1.1 deraadt 1079: if (count != 0 && wrerr == NO &&
1.122 avsm 1080: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1081: wrerr = YES;
1.122 avsm 1082: wrerrno = errno;
1.1 deraadt 1083: }
1.159 djm 1084: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1085: ftruncate(ofd, size) != 0) {
1.1 deraadt 1086: run_err("%s: truncate: %s", np, strerror(errno));
1087: wrerr = DISPLAYED;
1088: }
1089: if (pflag) {
1090: if (exists || omode != mode)
1.116 dtucker 1091: if (fchmod(ofd, omode)) {
1.1 deraadt 1092: run_err("%s: set mode: %s",
1.63 stevesk 1093: np, strerror(errno));
1.116 dtucker 1094: wrerr = DISPLAYED;
1095: }
1.1 deraadt 1096: } else {
1097: if (!exists && omode != mode)
1.116 dtucker 1098: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1099: run_err("%s: set mode: %s",
1.63 stevesk 1100: np, strerror(errno));
1.116 dtucker 1101: wrerr = DISPLAYED;
1102: }
1.1 deraadt 1103: }
1.33 provos 1104: if (close(ofd) == -1) {
1105: wrerr = YES;
1106: wrerrno = errno;
1107: }
1.18 markus 1108: (void) response();
1.1 deraadt 1109: if (setimes && wrerr == NO) {
1110: setimes = 0;
1.40 markus 1111: if (utimes(np, tv) < 0) {
1.1 deraadt 1112: run_err("%s: set times: %s",
1.63 stevesk 1113: np, strerror(errno));
1.1 deraadt 1114: wrerr = DISPLAYED;
1115: }
1116: }
1.18 markus 1117: switch (wrerr) {
1.1 deraadt 1118: case YES:
1119: run_err("%s: %s", np, strerror(wrerrno));
1120: break;
1121: case NO:
1.107 deraadt 1122: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1123: break;
1124: case DISPLAYED:
1125: break;
1126: }
1127: }
1128: screwup:
1129: run_err("protocol error: %s", why);
1130: exit(1);
1131: }
1132:
1133: int
1.86 itojun 1134: response(void)
1.1 deraadt 1135: {
1136: char ch, *cp, resp, rbuf[2048];
1137:
1.30 deraadt 1138: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1139: lostconn(0);
1140:
1141: cp = rbuf;
1.18 markus 1142: switch (resp) {
1143: case 0: /* ok */
1.1 deraadt 1144: return (0);
1145: default:
1146: *cp++ = resp;
1147: /* FALLTHROUGH */
1.18 markus 1148: case 1: /* error, followed by error msg */
1149: case 2: /* fatal error, "" */
1.1 deraadt 1150: do {
1.30 deraadt 1151: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1152: lostconn(0);
1153: *cp++ = ch;
1154: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1155:
1156: if (!iamremote)
1.107 deraadt 1157: (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 1158: ++errs;
1159: if (resp == 1)
1160: return (-1);
1161: exit(1);
1162: }
1163: /* NOTREACHED */
1164: }
1165:
1166: void
1.86 itojun 1167: usage(void)
1.1 deraadt 1168: {
1.83 stevesk 1169: (void) fprintf(stderr,
1.110 jmc 1170: "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1171: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1172: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1173: exit(1);
1174: }
1175:
1176: void
1.18 markus 1177: run_err(const char *fmt,...)
1.1 deraadt 1178: {
1179: static FILE *fp;
1180: va_list ap;
1181:
1182: ++errs;
1.136 biorn 1183: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1184: (void) fprintf(fp, "%c", 0x01);
1185: (void) fprintf(fp, "scp: ");
1186: va_start(ap, fmt);
1187: (void) vfprintf(fp, fmt, ap);
1188: va_end(ap);
1189: (void) fprintf(fp, "\n");
1190: (void) fflush(fp);
1191: }
1.18 markus 1192:
1193: if (!iamremote) {
1.73 markus 1194: va_start(ap, fmt);
1.18 markus 1195: vfprintf(stderr, fmt, ap);
1.73 markus 1196: va_end(ap);
1.18 markus 1197: fprintf(stderr, "\n");
1198: }
1.1 deraadt 1199: }
1200:
1201: void
1.104 djm 1202: verifydir(char *cp)
1.1 deraadt 1203: {
1204: struct stat stb;
1205:
1206: if (!stat(cp, &stb)) {
1207: if (S_ISDIR(stb.st_mode))
1208: return;
1209: errno = ENOTDIR;
1210: }
1211: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1212: killchild(0);
1.1 deraadt 1213: }
1214:
1215: int
1.104 djm 1216: okname(char *cp0)
1.1 deraadt 1217: {
1218: int c;
1219: char *cp;
1220:
1221: cp = cp0;
1222: do {
1.75 deraadt 1223: c = (int)*cp;
1.1 deraadt 1224: if (c & 0200)
1225: goto bad;
1.101 markus 1226: if (!isalpha(c) && !isdigit(c)) {
1227: switch (c) {
1228: case '\'':
1229: case '"':
1230: case '`':
1231: case ' ':
1232: case '#':
1233: goto bad;
1234: default:
1235: break;
1236: }
1237: }
1.1 deraadt 1238: } while (*++cp);
1239: return (1);
1240:
1.25 markus 1241: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1242: return (0);
1243: }
1244:
1245: BUF *
1.104 djm 1246: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1247: {
1248: size_t size;
1249: struct stat stb;
1250:
1251: if (fstat(fd, &stb) < 0) {
1252: run_err("fstat: %s", strerror(errno));
1253: return (0);
1254: }
1.95 markus 1255: size = roundup(stb.st_blksize, blksize);
1256: if (size == 0)
1.18 markus 1257: size = blksize;
1.1 deraadt 1258: if (bp->cnt >= size)
1259: return (bp);
1.18 markus 1260: if (bp->buf == NULL)
1261: bp->buf = xmalloc(size);
1262: else
1.138 djm 1263: bp->buf = xrealloc(bp->buf, 1, size);
1.81 markus 1264: memset(bp->buf, 0, size);
1.1 deraadt 1265: bp->cnt = size;
1266: return (bp);
1267: }
1268:
1269: void
1.104 djm 1270: lostconn(int signo)
1.1 deraadt 1271: {
1272: if (!iamremote)
1.74 markus 1273: write(STDERR_FILENO, "lost connection\n", 16);
1274: if (signo)
1275: _exit(1);
1276: else
1277: exit(1);
1.4 aaron 1278: }
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