Annotation of src/usr.bin/ssh/scp.c, Revision 1.164
1.164 ! stevesk 1: /* $OpenBSD: scp.c,v 1.163 2008/06/13 18:55:22 dtucker 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
1.164 ! stevesk 415: * and no error has occurred yet
1.92 markus 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;
1.163 dtucker 610: off_t i, statbytes;
611: size_t amt;
1.125 dtucker 612: int fd = -1, haderr, indx;
1.158 dtucker 613: char *last, *name, buf[2048], encname[MAXPATHLEN];
1.65 deraadt 614: int len;
1.1 deraadt 615:
616: for (indx = 0; indx < argc; ++indx) {
1.18 markus 617: name = argv[indx];
1.11 aaron 618: statbytes = 0;
1.65 deraadt 619: len = strlen(name);
620: while (len > 1 && name[len-1] == '/')
621: name[--len] = '\0';
1.158 dtucker 622: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
623: goto syserr;
1.85 markus 624: if (strchr(name, '\n') != NULL) {
1.158 dtucker 625: strnvis(encname, name, sizeof(encname), VIS_NL);
626: name = encname;
1.85 markus 627: }
1.1 deraadt 628: if (fstat(fd, &stb) < 0) {
629: syserr: run_err("%s: %s", name, strerror(errno));
630: goto next;
631: }
1.163 dtucker 632: if (stb.st_size < 0) {
633: run_err("%s: %s", name, "Negative file size");
634: goto next;
635: }
1.157 djm 636: unset_nonblock(fd);
1.1 deraadt 637: switch (stb.st_mode & S_IFMT) {
638: case S_IFREG:
639: break;
640: case S_IFDIR:
641: if (iamrecursive) {
642: rsource(name, &stb);
643: goto next;
644: }
645: /* FALLTHROUGH */
646: default:
647: run_err("%s: not a regular file", name);
648: goto next;
649: }
650: if ((last = strrchr(name, '/')) == NULL)
651: last = name;
652: else
653: ++last;
1.11 aaron 654: curfile = last;
1.1 deraadt 655: if (pflag) {
656: /*
657: * Make it compatible with possible future
658: * versions expecting microseconds.
659: */
1.55 deraadt 660: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.162 dtucker 661: (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
662: (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
663: if (verbose_mode) {
664: fprintf(stderr, "File mtime %ld atime %ld\n",
665: (long)stb.st_mtime, (long)stb.st_atime);
666: fprintf(stderr, "Sending file timestamps: %s",
667: buf);
668: }
1.107 deraadt 669: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 670: if (response() < 0)
671: goto next;
672: }
673: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 674: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 675: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 676: (long long)stb.st_size, last);
1.18 markus 677: if (verbose_mode) {
678: fprintf(stderr, "Sending file modes: %s", buf);
679: }
1.107 deraadt 680: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 681: if (response() < 0)
682: goto next;
1.161 djm 683: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 684: next: if (fd != -1) {
685: (void) close(fd);
686: fd = -1;
687: }
1.1 deraadt 688: continue;
689: }
1.97 fgsch 690: if (showprogress)
691: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 692: set_nonblock(remout);
1.1 deraadt 693: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
694: amt = bp->cnt;
1.163 dtucker 695: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 696: amt = stb.st_size - i;
697: if (!haderr) {
1.161 djm 698: if (atomicio(read, fd, bp->buf, amt) != amt)
1.122 avsm 699: haderr = errno;
1.1 deraadt 700: }
1.161 djm 701: /* Keep writing after error to retain sync */
702: if (haderr) {
703: (void)atomicio(vwrite, remout, bp->buf, amt);
704: continue;
1.1 deraadt 705: }
1.161 djm 706: if (scpio(vwrite, remout, bp->buf, amt,
707: &statbytes) != amt)
708: haderr = errno;
1.1 deraadt 709: }
1.161 djm 710: unset_nonblock(remout);
1.18 markus 711: if (showprogress)
1.97 fgsch 712: stop_progress_meter();
1.4 aaron 713:
1.127 deraadt 714: if (fd != -1) {
715: if (close(fd) < 0 && !haderr)
716: haderr = errno;
717: fd = -1;
718: }
1.1 deraadt 719: if (!haderr)
1.107 deraadt 720: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 721: else
722: run_err("%s: %s", name, strerror(haderr));
1.18 markus 723: (void) response();
1.1 deraadt 724: }
725: }
726:
727: void
1.104 djm 728: rsource(char *name, struct stat *statp)
1.1 deraadt 729: {
730: DIR *dirp;
731: struct dirent *dp;
732: char *last, *vect[1], path[1100];
733:
734: if (!(dirp = opendir(name))) {
735: run_err("%s: %s", name, strerror(errno));
736: return;
737: }
738: last = strrchr(name, '/');
739: if (last == 0)
740: last = name;
741: else
742: last++;
743: if (pflag) {
1.55 deraadt 744: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 745: (u_long) statp->st_mtime,
746: (u_long) statp->st_atime);
1.107 deraadt 747: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 748: if (response() < 0) {
749: closedir(dirp);
750: return;
751: }
752: }
1.55 deraadt 753: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 754: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 755: if (verbose_mode)
756: fprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 757: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 758: if (response() < 0) {
759: closedir(dirp);
760: return;
761: }
1.63 stevesk 762: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 763: if (dp->d_ino == 0)
764: continue;
765: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
766: continue;
767: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
768: run_err("%s/%s: name too long", name, dp->d_name);
769: continue;
770: }
1.55 deraadt 771: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 772: vect[0] = path;
773: source(1, vect);
774: }
1.18 markus 775: (void) closedir(dirp);
1.107 deraadt 776: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 777: (void) response();
1.1 deraadt 778: }
779:
780: void
1.99 markus 781: bwlimit(int amount)
782: {
783: static struct timeval bwstart, bwend;
784: static int lamt, thresh = 16384;
1.115 avsm 785: u_int64_t waitlen;
1.99 markus 786: struct timespec ts, rm;
787:
788: if (!timerisset(&bwstart)) {
789: gettimeofday(&bwstart, NULL);
790: return;
791: }
792:
793: lamt += amount;
794: if (lamt < thresh)
795: return;
796:
797: gettimeofday(&bwend, NULL);
798: timersub(&bwend, &bwstart, &bwend);
799: if (!timerisset(&bwend))
800: return;
801:
802: lamt *= 8;
1.115 avsm 803: waitlen = (double)1000000L * lamt / limit_rate;
1.99 markus 804:
1.115 avsm 805: bwstart.tv_sec = waitlen / 1000000L;
806: bwstart.tv_usec = waitlen % 1000000L;
1.99 markus 807:
808: if (timercmp(&bwstart, &bwend, >)) {
809: timersub(&bwstart, &bwend, &bwend);
810:
811: /* Adjust the wait time */
812: if (bwend.tv_sec) {
813: thresh /= 2;
814: if (thresh < 2048)
815: thresh = 2048;
1.161 djm 816: } else if (bwend.tv_usec < 10000) {
1.99 markus 817: thresh *= 2;
1.161 djm 818: if (thresh > COPY_BUFLEN * 4)
819: thresh = COPY_BUFLEN * 4;
1.99 markus 820: }
821:
822: TIMEVAL_TO_TIMESPEC(&bwend, &ts);
823: while (nanosleep(&ts, &rm) == -1) {
824: if (errno != EINTR)
825: break;
826: ts = rm;
827: }
828: }
829:
830: lamt = 0;
831: gettimeofday(&bwstart, NULL);
832: }
833:
834: void
1.104 djm 835: sink(int argc, char **argv)
1.1 deraadt 836: {
837: static BUF buffer;
838: struct stat stb;
1.18 markus 839: enum {
840: YES, NO, DISPLAYED
841: } wrerr;
1.1 deraadt 842: BUF *bp;
1.122 avsm 843: off_t i;
1.124 djm 844: size_t j, count;
1.140 deraadt 845: int amt, exists, first, ofd;
846: mode_t mode, omode, mask;
1.97 fgsch 847: off_t size, statbytes;
1.36 deraadt 848: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 849: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 850: struct timeval tv[2];
1.1 deraadt 851:
1.66 stevesk 852: #define atime tv[0]
853: #define mtime tv[1]
1.118 deraadt 854: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 855:
856: setimes = targisdir = 0;
857: mask = umask(0);
858: if (!pflag)
1.18 markus 859: (void) umask(mask);
1.1 deraadt 860: if (argc != 1) {
861: run_err("ambiguous target");
862: exit(1);
863: }
864: targ = *argv;
865: if (targetshouldbedirectory)
866: verifydir(targ);
1.18 markus 867:
1.107 deraadt 868: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 869: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
870: targisdir = 1;
871: for (first = 1;; first = 0) {
872: cp = buf;
1.122 avsm 873: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 874: return;
875: if (*cp++ == '\n')
876: SCREWUP("unexpected <newline>");
877: do {
1.30 deraadt 878: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 879: SCREWUP("lost connection");
880: *cp++ = ch;
881: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
882: *cp = 0;
1.114 markus 883: if (verbose_mode)
884: fprintf(stderr, "Sink: %s", buf);
1.1 deraadt 885:
886: if (buf[0] == '\01' || buf[0] == '\02') {
887: if (iamremote == 0)
1.107 deraadt 888: (void) atomicio(vwrite, STDERR_FILENO,
1.44 deraadt 889: buf + 1, strlen(buf + 1));
1.1 deraadt 890: if (buf[0] == '\02')
891: exit(1);
892: ++errs;
893: continue;
894: }
895: if (buf[0] == 'E') {
1.107 deraadt 896: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 897: return;
898: }
899: if (ch == '\n')
900: *--cp = 0;
901:
902: cp = buf;
903: if (*cp == 'T') {
904: setimes++;
905: cp++;
1.66 stevesk 906: mtime.tv_sec = strtol(cp, &cp, 10);
907: if (!cp || *cp++ != ' ')
1.1 deraadt 908: SCREWUP("mtime.sec not delimited");
1.66 stevesk 909: mtime.tv_usec = strtol(cp, &cp, 10);
910: if (!cp || *cp++ != ' ')
1.1 deraadt 911: SCREWUP("mtime.usec not delimited");
1.66 stevesk 912: atime.tv_sec = strtol(cp, &cp, 10);
913: if (!cp || *cp++ != ' ')
1.1 deraadt 914: SCREWUP("atime.sec not delimited");
1.66 stevesk 915: atime.tv_usec = strtol(cp, &cp, 10);
916: if (!cp || *cp++ != '\0')
1.1 deraadt 917: SCREWUP("atime.usec not delimited");
1.107 deraadt 918: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 919: continue;
920: }
921: if (*cp != 'C' && *cp != 'D') {
922: /*
923: * Check for the case "rcp remote:foo\* local:bar".
924: * In this case, the line "No match." can be returned
925: * by the shell before the rcp command on the remote is
926: * executed so the ^Aerror_message convention isn't
927: * followed.
928: */
929: if (first) {
930: run_err("%s", cp);
931: exit(1);
932: }
933: SCREWUP("expected control record");
934: }
935: mode = 0;
936: for (++cp; cp < buf + 5; cp++) {
937: if (*cp < '0' || *cp > '7')
938: SCREWUP("bad mode");
939: mode = (mode << 3) | (*cp - '0');
940: }
941: if (*cp++ != ' ')
942: SCREWUP("mode not delimited");
943:
1.63 stevesk 944: for (size = 0; isdigit(*cp);)
1.1 deraadt 945: size = size * 10 + (*cp++ - '0');
946: if (*cp++ != ' ')
947: SCREWUP("size not delimited");
1.114 markus 948: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
949: run_err("error: unexpected filename: %s", cp);
950: exit(1);
951: }
1.1 deraadt 952: if (targisdir) {
953: static char *namebuf;
1.124 djm 954: static size_t cursize;
1.1 deraadt 955: size_t need;
956:
957: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 958: if (need > cursize) {
1.58 danh 959: if (namebuf)
960: xfree(namebuf);
1.18 markus 961: namebuf = xmalloc(need);
1.55 deraadt 962: cursize = need;
963: }
964: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 965: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 966: np = namebuf;
967: } else
968: np = targ;
1.12 aaron 969: curfile = cp;
1.1 deraadt 970: exists = stat(np, &stb) == 0;
971: if (buf[0] == 'D') {
972: int mod_flag = pflag;
1.114 markus 973: if (!iamrecursive)
974: SCREWUP("received directory without -r");
1.1 deraadt 975: if (exists) {
976: if (!S_ISDIR(stb.st_mode)) {
977: errno = ENOTDIR;
978: goto bad;
979: }
980: if (pflag)
1.18 markus 981: (void) chmod(np, mode);
1.1 deraadt 982: } else {
1.18 markus 983: /* Handle copying from a read-only
984: directory */
1.1 deraadt 985: mod_flag = 1;
986: if (mkdir(np, mode | S_IRWXU) < 0)
987: goto bad;
988: }
1.58 danh 989: vect[0] = xstrdup(np);
1.1 deraadt 990: sink(1, vect);
991: if (setimes) {
992: setimes = 0;
1.59 deraadt 993: if (utimes(vect[0], tv) < 0)
1.18 markus 994: run_err("%s: set times: %s",
1.59 deraadt 995: vect[0], strerror(errno));
1.1 deraadt 996: }
997: if (mod_flag)
1.59 deraadt 998: (void) chmod(vect[0], mode);
999: if (vect[0])
1000: xfree(vect[0]);
1.1 deraadt 1001: continue;
1002: }
1003: omode = mode;
1004: mode |= S_IWRITE;
1.71 markus 1005: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1006: bad: run_err("%s: %s", np, strerror(errno));
1007: continue;
1008: }
1.107 deraadt 1009: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1010: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1011: (void) close(ofd);
1.1 deraadt 1012: continue;
1013: }
1014: cp = bp->buf;
1015: wrerr = NO;
1.7 deraadt 1016:
1.12 aaron 1017: statbytes = 0;
1.97 fgsch 1018: if (showprogress)
1019: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1020: set_nonblock(remin);
1021: for (count = i = 0; i < size; i += bp->cnt) {
1022: amt = bp->cnt;
1.1 deraadt 1023: if (i + amt > size)
1024: amt = size - i;
1025: count += amt;
1026: do {
1.161 djm 1027: j = scpio(read, remin, cp, amt, &statbytes);
1.122 avsm 1028: if (j == 0) {
1.161 djm 1029: run_err("%s", j != EPIPE ?
1030: strerror(errno) :
1.63 stevesk 1031: "dropped connection");
1.1 deraadt 1032: exit(1);
1033: }
1034: amt -= j;
1035: cp += j;
1036: } while (amt > 0);
1.112 djm 1037:
1.1 deraadt 1038: if (count == bp->cnt) {
1039: /* Keep reading so we stay sync'd up. */
1040: if (wrerr == NO) {
1.122 avsm 1041: if (atomicio(vwrite, ofd, bp->buf,
1042: count) != count) {
1.1 deraadt 1043: wrerr = YES;
1.122 avsm 1044: wrerrno = errno;
1.1 deraadt 1045: }
1046: }
1047: count = 0;
1048: cp = bp->buf;
1049: }
1050: }
1.161 djm 1051: unset_nonblock(remin);
1.7 deraadt 1052: if (showprogress)
1.97 fgsch 1053: stop_progress_meter();
1.1 deraadt 1054: if (count != 0 && wrerr == NO &&
1.122 avsm 1055: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1056: wrerr = YES;
1.122 avsm 1057: wrerrno = errno;
1.1 deraadt 1058: }
1.159 djm 1059: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1060: ftruncate(ofd, size) != 0) {
1.1 deraadt 1061: run_err("%s: truncate: %s", np, strerror(errno));
1062: wrerr = DISPLAYED;
1063: }
1064: if (pflag) {
1065: if (exists || omode != mode)
1.116 dtucker 1066: if (fchmod(ofd, omode)) {
1.1 deraadt 1067: run_err("%s: set mode: %s",
1.63 stevesk 1068: np, strerror(errno));
1.116 dtucker 1069: wrerr = DISPLAYED;
1070: }
1.1 deraadt 1071: } else {
1072: if (!exists && omode != mode)
1.116 dtucker 1073: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1074: run_err("%s: set mode: %s",
1.63 stevesk 1075: np, strerror(errno));
1.116 dtucker 1076: wrerr = DISPLAYED;
1077: }
1.1 deraadt 1078: }
1.33 provos 1079: if (close(ofd) == -1) {
1080: wrerr = YES;
1081: wrerrno = errno;
1082: }
1.18 markus 1083: (void) response();
1.1 deraadt 1084: if (setimes && wrerr == NO) {
1085: setimes = 0;
1.40 markus 1086: if (utimes(np, tv) < 0) {
1.1 deraadt 1087: run_err("%s: set times: %s",
1.63 stevesk 1088: np, strerror(errno));
1.1 deraadt 1089: wrerr = DISPLAYED;
1090: }
1091: }
1.18 markus 1092: switch (wrerr) {
1.1 deraadt 1093: case YES:
1094: run_err("%s: %s", np, strerror(wrerrno));
1095: break;
1096: case NO:
1.107 deraadt 1097: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1098: break;
1099: case DISPLAYED:
1100: break;
1101: }
1102: }
1103: screwup:
1104: run_err("protocol error: %s", why);
1105: exit(1);
1106: }
1107:
1108: int
1.86 itojun 1109: response(void)
1.1 deraadt 1110: {
1111: char ch, *cp, resp, rbuf[2048];
1112:
1.30 deraadt 1113: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1114: lostconn(0);
1115:
1116: cp = rbuf;
1.18 markus 1117: switch (resp) {
1118: case 0: /* ok */
1.1 deraadt 1119: return (0);
1120: default:
1121: *cp++ = resp;
1122: /* FALLTHROUGH */
1.18 markus 1123: case 1: /* error, followed by error msg */
1124: case 2: /* fatal error, "" */
1.1 deraadt 1125: do {
1.30 deraadt 1126: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1127: lostconn(0);
1128: *cp++ = ch;
1129: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1130:
1131: if (!iamremote)
1.107 deraadt 1132: (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 1133: ++errs;
1134: if (resp == 1)
1135: return (-1);
1136: exit(1);
1137: }
1138: /* NOTREACHED */
1139: }
1140:
1141: void
1.86 itojun 1142: usage(void)
1.1 deraadt 1143: {
1.83 stevesk 1144: (void) fprintf(stderr,
1.110 jmc 1145: "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1146: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1147: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1148: exit(1);
1149: }
1150:
1151: void
1.18 markus 1152: run_err(const char *fmt,...)
1.1 deraadt 1153: {
1154: static FILE *fp;
1155: va_list ap;
1156:
1157: ++errs;
1.136 biorn 1158: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1159: (void) fprintf(fp, "%c", 0x01);
1160: (void) fprintf(fp, "scp: ");
1161: va_start(ap, fmt);
1162: (void) vfprintf(fp, fmt, ap);
1163: va_end(ap);
1164: (void) fprintf(fp, "\n");
1165: (void) fflush(fp);
1166: }
1.18 markus 1167:
1168: if (!iamremote) {
1.73 markus 1169: va_start(ap, fmt);
1.18 markus 1170: vfprintf(stderr, fmt, ap);
1.73 markus 1171: va_end(ap);
1.18 markus 1172: fprintf(stderr, "\n");
1173: }
1.1 deraadt 1174: }
1175:
1176: void
1.104 djm 1177: verifydir(char *cp)
1.1 deraadt 1178: {
1179: struct stat stb;
1180:
1181: if (!stat(cp, &stb)) {
1182: if (S_ISDIR(stb.st_mode))
1183: return;
1184: errno = ENOTDIR;
1185: }
1186: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1187: killchild(0);
1.1 deraadt 1188: }
1189:
1190: int
1.104 djm 1191: okname(char *cp0)
1.1 deraadt 1192: {
1193: int c;
1194: char *cp;
1195:
1196: cp = cp0;
1197: do {
1.75 deraadt 1198: c = (int)*cp;
1.1 deraadt 1199: if (c & 0200)
1200: goto bad;
1.101 markus 1201: if (!isalpha(c) && !isdigit(c)) {
1202: switch (c) {
1203: case '\'':
1204: case '"':
1205: case '`':
1206: case ' ':
1207: case '#':
1208: goto bad;
1209: default:
1210: break;
1211: }
1212: }
1.1 deraadt 1213: } while (*++cp);
1214: return (1);
1215:
1.25 markus 1216: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1217: return (0);
1218: }
1219:
1220: BUF *
1.104 djm 1221: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1222: {
1223: size_t size;
1224: struct stat stb;
1225:
1226: if (fstat(fd, &stb) < 0) {
1227: run_err("fstat: %s", strerror(errno));
1228: return (0);
1229: }
1.95 markus 1230: size = roundup(stb.st_blksize, blksize);
1231: if (size == 0)
1.18 markus 1232: size = blksize;
1.1 deraadt 1233: if (bp->cnt >= size)
1234: return (bp);
1.18 markus 1235: if (bp->buf == NULL)
1236: bp->buf = xmalloc(size);
1237: else
1.138 djm 1238: bp->buf = xrealloc(bp->buf, 1, size);
1.81 markus 1239: memset(bp->buf, 0, size);
1.1 deraadt 1240: bp->cnt = size;
1241: return (bp);
1242: }
1243:
1244: void
1.104 djm 1245: lostconn(int signo)
1.1 deraadt 1246: {
1247: if (!iamremote)
1.74 markus 1248: write(STDERR_FILENO, "lost connection\n", 16);
1249: if (signo)
1250: _exit(1);
1251: else
1252: exit(1);
1.4 aaron 1253: }
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