Annotation of src/usr.bin/ssh/scp.c, Revision 1.193
1.193 ! millert 1: /* $OpenBSD: scp.c,v 1.192 2017/05/31 09:15:42 deraadt 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:
1.132 stevesk 74: #include <sys/types.h>
1.161 djm 75: #include <sys/poll.h>
1.132 stevesk 76: #include <sys/wait.h>
1.134 stevesk 77: #include <sys/stat.h>
1.151 stevesk 78: #include <sys/time.h>
1.155 deraadt 79: #include <sys/uio.h>
1.131 stevesk 80:
1.135 stevesk 81: #include <ctype.h>
1.131 stevesk 82: #include <dirent.h>
1.147 stevesk 83: #include <errno.h>
1.144 stevesk 84: #include <fcntl.h>
1.186 schwarze 85: #include <locale.h>
1.143 stevesk 86: #include <pwd.h>
1.133 stevesk 87: #include <signal.h>
1.146 stevesk 88: #include <stdarg.h>
1.189 millert 89: #include <stdint.h>
1.154 stevesk 90: #include <stdio.h>
1.153 stevesk 91: #include <stdlib.h>
1.150 stevesk 92: #include <string.h>
1.149 stevesk 93: #include <time.h>
1.148 stevesk 94: #include <unistd.h>
1.181 deraadt 95: #include <limits.h>
1.158 dtucker 96: #include <vis.h>
1.1 deraadt 97:
98: #include "xmalloc.h"
1.193 ! millert 99: #include "ssh.h"
1.51 markus 100: #include "atomicio.h"
1.50 markus 101: #include "pathnames.h"
1.51 markus 102: #include "log.h"
1.69 mouring 103: #include "misc.h"
1.97 fgsch 104: #include "progressmeter.h"
1.186 schwarze 105: #include "utf8.h"
1.1 deraadt 106:
1.161 djm 107: #define COPY_BUFLEN 16384
108:
1.193 ! millert 109: int do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout);
! 110: int do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout);
1.11 aaron 111:
1.70 mouring 112: /* Struct for addargs */
113: arglist args;
1.168 djm 114: arglist remote_remote_args;
1.41 markus 115:
1.99 markus 116: /* Bandwidth limit */
1.167 djm 117: long long limit_kbps = 0;
118: struct bwlimit bwlimit;
1.99 markus 119:
1.11 aaron 120: /* Name of current file being transferred. */
121: char *curfile;
1.4 aaron 122:
1.1 deraadt 123: /* This is set to non-zero to enable verbose mode. */
1.17 markus 124: int verbose_mode = 0;
1.1 deraadt 125:
1.6 aaron 126: /* This is set to zero if the progressmeter is not desired. */
127: int showprogress = 1;
128:
1.169 markus 129: /*
130: * This is set to non-zero if remote-remote copy should be piped
131: * through this process.
132: */
133: int throughlocal = 0;
134:
1.193 ! millert 135: /* Non-standard port to use for the ssh connection or -1. */
! 136: int sshport = -1;
! 137:
1.34 deraadt 138: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 139: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 140:
1.92 markus 141: /* This is used to store the pid of ssh_program */
1.105 djm 142: pid_t do_cmd_pid = -1;
143:
144: static void
145: killchild(int signo)
146: {
1.119 dtucker 147: if (do_cmd_pid > 1) {
1.123 avsm 148: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 149: waitpid(do_cmd_pid, NULL, 0);
150: }
1.105 djm 151:
1.123 avsm 152: if (signo)
153: _exit(1);
154: exit(1);
1.105 djm 155: }
1.92 markus 156:
1.166 millert 157: static void
158: suspchild(int signo)
159: {
160: int status;
161:
162: if (do_cmd_pid > 1) {
163: kill(do_cmd_pid, signo);
164: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
165: errno == EINTR)
166: ;
167: kill(getpid(), SIGSTOP);
168: }
169: }
170:
1.129 djm 171: static int
172: do_local_cmd(arglist *a)
173: {
174: u_int i;
175: int status;
176: pid_t pid;
177:
178: if (a->num == 0)
179: fatal("do_local_cmd: no arguments");
180:
181: if (verbose_mode) {
182: fprintf(stderr, "Executing:");
183: for (i = 0; i < a->num; i++)
1.186 schwarze 184: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 185: fprintf(stderr, "\n");
186: }
187: if ((pid = fork()) == -1)
188: fatal("do_local_cmd: fork: %s", strerror(errno));
189:
190: if (pid == 0) {
191: execvp(a->list[0], a->list);
192: perror(a->list[0]);
193: exit(1);
194: }
195:
196: do_cmd_pid = pid;
197: signal(SIGTERM, killchild);
198: signal(SIGINT, killchild);
199: signal(SIGHUP, killchild);
200:
201: while (waitpid(pid, &status, 0) == -1)
202: if (errno != EINTR)
203: fatal("do_local_cmd: waitpid: %s", strerror(errno));
204:
205: do_cmd_pid = -1;
206:
207: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
208: return (-1);
209:
210: return (0);
211: }
212:
1.20 markus 213: /*
214: * This function executes the given command as the specified user on the
215: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
216: * assigns the input and output file descriptors on success.
217: */
1.1 deraadt 218:
1.27 markus 219: int
1.193 ! millert 220: do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout)
1.1 deraadt 221: {
1.18 markus 222: int pin[2], pout[2], reserved[2];
223:
224: if (verbose_mode)
1.186 schwarze 225: fmprintf(stderr,
1.78 deraadt 226: "Executing: program %s host %s, user %s, command %s\n",
227: ssh_program, host,
228: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 229:
1.193 ! millert 230: if (port == -1)
! 231: port = sshport;
! 232:
1.20 markus 233: /*
234: * Reserve two descriptors so that the real pipes won't get
235: * descriptors 0 and 1 because that will screw up dup2 below.
236: */
1.142 markus 237: if (pipe(reserved) < 0)
238: fatal("pipe: %s", strerror(errno));
1.18 markus 239:
240: /* Create a socket pair for communicating with ssh. */
241: if (pipe(pin) < 0)
242: fatal("pipe: %s", strerror(errno));
243: if (pipe(pout) < 0)
244: fatal("pipe: %s", strerror(errno));
245:
246: /* Free the reserved descriptors. */
247: close(reserved[0]);
248: close(reserved[1]);
1.166 millert 249:
250: signal(SIGTSTP, suspchild);
251: signal(SIGTTIN, suspchild);
252: signal(SIGTTOU, suspchild);
1.18 markus 253:
1.106 nino 254: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 255: do_cmd_pid = fork();
256: if (do_cmd_pid == 0) {
1.18 markus 257: /* Child. */
258: close(pin[1]);
259: close(pout[0]);
260: dup2(pin[0], 0);
261: dup2(pout[1], 1);
262: close(pin[0]);
263: close(pout[1]);
264:
1.129 djm 265: replacearg(&args, 0, "%s", ssh_program);
1.193 ! millert 266: if (port != -1) {
! 267: addargs(&args, "-p");
! 268: addargs(&args, "%d", port);
! 269: }
1.165 guenther 270: if (remuser != NULL) {
271: addargs(&args, "-l");
272: addargs(&args, "%s", remuser);
273: }
274: addargs(&args, "--");
1.70 mouring 275: addargs(&args, "%s", host);
276: addargs(&args, "%s", cmd);
1.18 markus 277:
1.41 markus 278: execvp(ssh_program, args.list);
1.34 deraadt 279: perror(ssh_program);
1.18 markus 280: exit(1);
1.92 markus 281: } else if (do_cmd_pid == -1) {
282: fatal("fork: %s", strerror(errno));
1.18 markus 283: }
284: /* Parent. Close the other side, and return the local side. */
285: close(pin[0]);
286: *fdout = pin[1];
287: close(pout[1]);
288: *fdin = pout[0];
1.105 djm 289: signal(SIGTERM, killchild);
290: signal(SIGINT, killchild);
291: signal(SIGHUP, killchild);
1.18 markus 292: return 0;
1.1 deraadt 293: }
294:
1.169 markus 295: /*
296: * This functions executes a command simlar to do_cmd(), but expects the
297: * input and output descriptors to be setup by a previous call to do_cmd().
298: * This way the input and output of two commands can be connected.
299: */
300: int
1.193 ! millert 301: do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
1.169 markus 302: {
303: pid_t pid;
304: int status;
305:
306: if (verbose_mode)
1.186 schwarze 307: fmprintf(stderr,
1.169 markus 308: "Executing: 2nd program %s host %s, user %s, command %s\n",
309: ssh_program, host,
310: remuser ? remuser : "(unspecified)", cmd);
311:
1.193 ! millert 312: if (port == -1)
! 313: port = sshport;
! 314:
1.169 markus 315: /* Fork a child to execute the command on the remote host using ssh. */
316: pid = fork();
317: if (pid == 0) {
318: dup2(fdin, 0);
319: dup2(fdout, 1);
320:
321: replacearg(&args, 0, "%s", ssh_program);
1.193 ! millert 322: if (port != -1) {
! 323: addargs(&args, "-p");
! 324: addargs(&args, "%d", port);
! 325: }
1.169 markus 326: if (remuser != NULL) {
327: addargs(&args, "-l");
328: addargs(&args, "%s", remuser);
329: }
330: addargs(&args, "--");
331: addargs(&args, "%s", host);
332: addargs(&args, "%s", cmd);
333:
334: execvp(ssh_program, args.list);
335: perror(ssh_program);
336: exit(1);
337: } else if (pid == -1) {
338: fatal("fork: %s", strerror(errno));
339: }
340: while (waitpid(pid, &status, 0) == -1)
341: if (errno != EINTR)
342: fatal("do_cmd2: waitpid: %s", strerror(errno));
343: return 0;
344: }
345:
1.1 deraadt 346: typedef struct {
1.124 djm 347: size_t cnt;
1.1 deraadt 348: char *buf;
349: } BUF;
350:
1.18 markus 351: BUF *allocbuf(BUF *, int, int);
352: void lostconn(int);
353: int okname(char *);
354: void run_err(const char *,...);
355: void verifydir(char *);
1.1 deraadt 356:
357: struct passwd *pwd;
1.18 markus 358: uid_t userid;
1.1 deraadt 359: int errs, remin, remout;
360: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
361:
362: #define CMDNEEDS 64
363: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
364:
1.18 markus 365: int response(void);
366: void rsource(char *, struct stat *);
367: void sink(int, char *[]);
368: void source(int, char *[]);
369: void tolocal(int, char *[]);
1.193 ! millert 370: void toremote(int, char *[]);
1.18 markus 371: void usage(void);
1.1 deraadt 372:
373: int
1.104 djm 374: main(int argc, char **argv)
1.1 deraadt 375: {
1.145 djm 376: int ch, fflag, tflag, status, n;
1.193 ! millert 377: char **newargv;
1.167 djm 378: const char *errstr;
1.1 deraadt 379: extern char *optarg;
380: extern int optind;
1.126 djm 381:
382: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
383: sanitise_stdfd();
1.145 djm 384:
1.186 schwarze 385: setlocale(LC_CTYPE, "");
386:
1.145 djm 387: /* Copy argv, because we modify it */
1.187 deraadt 388: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 389: for (n = 0; n < argc; n++)
390: newargv[n] = xstrdup(argv[n]);
391: argv = newargv;
1.1 deraadt 392:
1.129 djm 393: memset(&args, '\0', sizeof(args));
1.168 djm 394: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
395: args.list = remote_remote_args.list = NULL;
1.129 djm 396: addargs(&args, "%s", ssh_program);
1.70 mouring 397: addargs(&args, "-x");
1.168 djm 398: addargs(&args, "-oForwardAgent=no");
399: addargs(&args, "-oPermitLocalCommand=no");
400: addargs(&args, "-oClearAllForwardings=yes");
1.41 markus 401:
1.1 deraadt 402: fflag = tflag = 0;
1.169 markus 403: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
1.18 markus 404: switch (ch) {
405: /* User-visible flags. */
1.100 markus 406: case '1':
1.190 djm 407: fatal("SSH protocol v.1 is no longer supported");
408: break;
1.100 markus 409: case '2':
1.190 djm 410: /* Ignored */
411: break;
1.23 markus 412: case '4':
1.41 markus 413: case '6':
414: case 'C':
1.70 mouring 415: addargs(&args, "-%c", ch);
1.168 djm 416: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 417: break;
1.169 markus 418: case '3':
419: throughlocal = 1;
420: break;
1.41 markus 421: case 'o':
422: case 'c':
423: case 'i':
1.83 stevesk 424: case 'F':
1.168 djm 425: addargs(&remote_remote_args, "-%c", ch);
426: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 427: addargs(&args, "-%c", ch);
428: addargs(&args, "%s", optarg);
1.23 markus 429: break;
1.41 markus 430: case 'P':
1.193 ! millert 431: sshport = a2port(optarg);
! 432: if (sshport <= 0)
! 433: fatal("bad port \"%s\"\n", optarg);
1.41 markus 434: break;
435: case 'B':
1.168 djm 436: addargs(&remote_remote_args, "-oBatchmode=yes");
437: addargs(&args, "-oBatchmode=yes");
1.23 markus 438: break;
1.99 markus 439: case 'l':
1.167 djm 440: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
441: &errstr);
442: if (errstr != NULL)
1.99 markus 443: usage();
1.167 djm 444: limit_kbps *= 1024; /* kbps */
445: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 446: break;
1.1 deraadt 447: case 'p':
448: pflag = 1;
449: break;
450: case 'r':
451: iamrecursive = 1;
452: break;
1.34 deraadt 453: case 'S':
1.41 markus 454: ssh_program = xstrdup(optarg);
455: break;
456: case 'v':
1.72 markus 457: addargs(&args, "-v");
1.168 djm 458: addargs(&remote_remote_args, "-v");
1.41 markus 459: verbose_mode = 1;
460: break;
461: case 'q':
1.111 dtucker 462: addargs(&args, "-q");
1.168 djm 463: addargs(&remote_remote_args, "-q");
1.41 markus 464: showprogress = 0;
1.34 deraadt 465: break;
466:
1.18 markus 467: /* Server options. */
1.1 deraadt 468: case 'd':
469: targetshouldbedirectory = 1;
470: break;
1.18 markus 471: case 'f': /* "from" */
1.1 deraadt 472: iamremote = 1;
473: fflag = 1;
474: break;
1.18 markus 475: case 't': /* "to" */
1.1 deraadt 476: iamremote = 1;
477: tflag = 1;
478: break;
479: default:
480: usage();
481: }
482: argc -= optind;
483: argv += optind;
484:
485: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 486: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 487:
1.156 djm 488: if (!isatty(STDOUT_FILENO))
1.7 deraadt 489: showprogress = 0;
1.184 deraadt 490:
491: if (pflag) {
492: /* Cannot pledge: -p allows setuid/setgid files... */
493: } else {
494: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
495: NULL) == -1) {
496: perror("pledge");
497: exit(1);
498: }
499: }
1.7 deraadt 500:
1.1 deraadt 501: remin = STDIN_FILENO;
502: remout = STDOUT_FILENO;
503:
1.52 stevesk 504: if (fflag) {
1.18 markus 505: /* Follow "protocol", send data. */
506: (void) response();
1.1 deraadt 507: source(argc, argv);
508: exit(errs != 0);
509: }
1.18 markus 510: if (tflag) {
511: /* Receive data. */
1.1 deraadt 512: sink(argc, argv);
513: exit(errs != 0);
514: }
515: if (argc < 2)
516: usage();
517: if (argc > 2)
518: targetshouldbedirectory = 1;
519:
520: remin = remout = -1;
1.92 markus 521: do_cmd_pid = -1;
1.1 deraadt 522: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 523: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
524: verbose_mode ? " -v" : "",
1.35 deraadt 525: iamrecursive ? " -r" : "", pflag ? " -p" : "",
526: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 527:
1.18 markus 528: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 529:
1.193 ! millert 530: if (colon(argv[argc - 1])) /* Dest is remote host. */
! 531: toremote(argc, argv);
1.1 deraadt 532: else {
533: if (targetshouldbedirectory)
534: verifydir(argv[argc - 1]);
1.130 djm 535: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 536: }
537: /*
538: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 539: * and no error has occurred yet
1.92 markus 540: */
541: if (do_cmd_pid != -1 && errs == 0) {
542: if (remin != -1)
543: (void) close(remin);
544: if (remout != -1)
545: (void) close(remout);
546: if (waitpid(do_cmd_pid, &status, 0) == -1)
547: errs = 1;
548: else {
549: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
550: errs = 1;
551: }
1.1 deraadt 552: }
553: exit(errs != 0);
554: }
555:
1.167 djm 556: /* Callback from atomicio6 to update progress meter and limit bandwidth */
557: static int
558: scpio(void *_cnt, size_t s)
1.161 djm 559: {
1.167 djm 560: off_t *cnt = (off_t *)_cnt;
561:
562: *cnt += s;
563: if (limit_kbps > 0)
564: bandwidth_limit(&bwlimit, s);
565: return 0;
1.161 djm 566: }
567:
1.176 guenther 568: static int
569: do_times(int fd, int verb, const struct stat *sb)
570: {
571: /* strlen(2^64) == 20; strlen(10^6) == 7 */
572: char buf[(20 + 7 + 2) * 2 + 2];
573:
574: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
575: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
576: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
577: if (verb) {
578: fprintf(stderr, "File mtime %lld atime %lld\n",
579: (long long)sb->st_mtime, (long long)sb->st_atime);
580: fprintf(stderr, "Sending file timestamps: %s", buf);
581: }
582: (void) atomicio(vwrite, fd, buf, strlen(buf));
583: return (response());
584: }
585:
1.1 deraadt 586: void
1.193 ! millert 587: toremote(int argc, char **argv)
1.1 deraadt 588: {
1.193 ! millert 589: char *suser = NULL, *host = NULL, *src = NULL;
! 590: char *bp, *tuser, *thost, *targ;
! 591: int sport = -1, tport = -1;
1.129 djm 592: arglist alist;
1.193 ! millert 593: int i, r;
1.168 djm 594: u_int j;
1.129 djm 595:
596: memset(&alist, '\0', sizeof(alist));
597: alist.list = NULL;
1.1 deraadt 598:
1.193 ! millert 599: /* Parse target */
! 600: r = parse_uri("scp", argv[argc - 1], &tuser, &thost, &tport, &targ);
! 601: if (r == -1)
! 602: goto out; /* invalid URI */
! 603: if (r != 0) {
! 604: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
! 605: &targ) == -1)
! 606: goto out;
1.129 djm 607: }
1.193 ! millert 608: if (tuser != NULL && !okname(tuser))
! 609: goto out;
1.129 djm 610:
1.193 ! millert 611: /* Parse source files */
1.1 deraadt 612: for (i = 0; i < argc - 1; i++) {
1.193 ! millert 613: free(suser);
! 614: free(host);
! 615: free(src);
! 616: r = parse_uri("scp", argv[i], &suser, &host, &sport, &src);
! 617: if (r == -1)
! 618: continue; /* invalid URI */
! 619: if (r != 0)
! 620: parse_user_host_path(argv[i], &suser, &host, &src);
! 621: if (suser != NULL && !okname(suser)) {
! 622: ++errs;
! 623: continue;
! 624: }
! 625: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 626: xasprintf(&bp, "%s -f %s%s", cmd,
627: *src == '-' ? "-- " : "", src);
1.193 ! millert 628: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 629: exit(1);
1.173 djm 630: free(bp);
1.171 djm 631: xasprintf(&bp, "%s -t %s%s", cmd,
632: *targ == '-' ? "-- " : "", targ);
1.193 ! millert 633: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 634: exit(1);
1.173 djm 635: free(bp);
1.169 markus 636: (void) close(remin);
637: (void) close(remout);
638: remin = remout = -1;
1.193 ! millert 639: } else if (host) { /* standard remote to remote */
! 640: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
! 641: /* This would require the remote support URIs */
! 642: fatal("target port not supported with two "
! 643: "remote hosts without the -3 option");
! 644: }
! 645:
1.129 djm 646: freeargs(&alist);
647: addargs(&alist, "%s", ssh_program);
648: addargs(&alist, "-x");
1.168 djm 649: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 650: addargs(&alist, "-n");
1.168 djm 651: for (j = 0; j < remote_remote_args.num; j++) {
652: addargs(&alist, "%s",
653: remote_remote_args.list[j]);
654: }
1.193 ! millert 655:
! 656: if (sport != -1) {
! 657: addargs(&alist, "-p");
! 658: addargs(&alist, "%d", sport);
! 659: }
! 660: if (suser) {
1.129 djm 661: addargs(&alist, "-l");
662: addargs(&alist, "%s", suser);
1.23 markus 663: }
1.165 guenther 664: addargs(&alist, "--");
1.129 djm 665: addargs(&alist, "%s", host);
666: addargs(&alist, "%s", cmd);
667: addargs(&alist, "%s", src);
668: addargs(&alist, "%s%s%s:%s",
669: tuser ? tuser : "", tuser ? "@" : "",
670: thost, targ);
671: if (do_local_cmd(&alist) != 0)
1.109 markus 672: errs = 1;
1.18 markus 673: } else { /* local to remote */
1.1 deraadt 674: if (remin == -1) {
1.171 djm 675: xasprintf(&bp, "%s -t %s%s", cmd,
676: *targ == '-' ? "-- " : "", targ);
1.193 ! millert 677: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 678: &remout) < 0)
1.18 markus 679: exit(1);
1.1 deraadt 680: if (response() < 0)
681: exit(1);
1.173 djm 682: free(bp);
1.1 deraadt 683: }
1.18 markus 684: source(1, argv + i);
1.1 deraadt 685: }
686: }
1.193 ! millert 687: out:
! 688: free(tuser);
! 689: free(thost);
! 690: free(targ);
! 691: free(suser);
! 692: free(host);
! 693: free(src);
1.1 deraadt 694: }
695:
696: void
1.104 djm 697: tolocal(int argc, char **argv)
1.1 deraadt 698: {
1.193 ! millert 699: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 700: arglist alist;
1.193 ! millert 701: int i, r, sport = -1;
1.129 djm 702:
703: memset(&alist, '\0', sizeof(alist));
704: alist.list = NULL;
1.1 deraadt 705:
706: for (i = 0; i < argc - 1; i++) {
1.193 ! millert 707: free(suser);
! 708: free(host);
! 709: free(src);
! 710: r = parse_uri("scp", argv[i], &suser, &host, &sport, &src);
! 711: if (r == -1) {
! 712: ++errs;
! 713: continue;
! 714: }
! 715: if (r != 0)
! 716: parse_user_host_path(argv[i], &suser, &host, &src);
! 717: if (suser != NULL && !okname(suser)) {
! 718: ++errs;
! 719: continue;
! 720: }
! 721: if (!host) { /* Local to local. */
1.129 djm 722: freeargs(&alist);
723: addargs(&alist, "%s", _PATH_CP);
724: if (iamrecursive)
725: addargs(&alist, "-r");
726: if (pflag)
727: addargs(&alist, "-p");
1.165 guenther 728: addargs(&alist, "--");
1.129 djm 729: addargs(&alist, "%s", argv[i]);
730: addargs(&alist, "%s", argv[argc-1]);
731: if (do_local_cmd(&alist))
1.1 deraadt 732: ++errs;
733: continue;
734: }
1.193 ! millert 735: /* Remote to local. */
1.171 djm 736: xasprintf(&bp, "%s -f %s%s",
737: cmd, *src == '-' ? "-- " : "", src);
1.193 ! millert 738: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 739: free(bp);
1.18 markus 740: ++errs;
741: continue;
1.1 deraadt 742: }
1.173 djm 743: free(bp);
1.1 deraadt 744: sink(1, argv + argc - 1);
1.18 markus 745: (void) close(remin);
1.1 deraadt 746: remin = remout = -1;
747: }
1.193 ! millert 748: free(suser);
! 749: free(host);
! 750: free(src);
1.1 deraadt 751: }
752:
753: void
1.104 djm 754: source(int argc, char **argv)
1.1 deraadt 755: {
756: struct stat stb;
757: static BUF buffer;
758: BUF *bp;
1.163 dtucker 759: off_t i, statbytes;
1.180 djm 760: size_t amt, nr;
1.125 dtucker 761: int fd = -1, haderr, indx;
1.181 deraadt 762: char *last, *name, buf[2048], encname[PATH_MAX];
1.65 deraadt 763: int len;
1.1 deraadt 764:
765: for (indx = 0; indx < argc; ++indx) {
1.18 markus 766: name = argv[indx];
1.11 aaron 767: statbytes = 0;
1.65 deraadt 768: len = strlen(name);
769: while (len > 1 && name[len-1] == '/')
770: name[--len] = '\0';
1.158 dtucker 771: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
772: goto syserr;
1.85 markus 773: if (strchr(name, '\n') != NULL) {
1.158 dtucker 774: strnvis(encname, name, sizeof(encname), VIS_NL);
775: name = encname;
1.85 markus 776: }
1.1 deraadt 777: if (fstat(fd, &stb) < 0) {
778: syserr: run_err("%s: %s", name, strerror(errno));
779: goto next;
780: }
1.163 dtucker 781: if (stb.st_size < 0) {
782: run_err("%s: %s", name, "Negative file size");
783: goto next;
784: }
1.157 djm 785: unset_nonblock(fd);
1.1 deraadt 786: switch (stb.st_mode & S_IFMT) {
787: case S_IFREG:
788: break;
789: case S_IFDIR:
790: if (iamrecursive) {
791: rsource(name, &stb);
792: goto next;
793: }
794: /* FALLTHROUGH */
795: default:
796: run_err("%s: not a regular file", name);
797: goto next;
798: }
799: if ((last = strrchr(name, '/')) == NULL)
800: last = name;
801: else
802: ++last;
1.11 aaron 803: curfile = last;
1.1 deraadt 804: if (pflag) {
1.176 guenther 805: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 806: goto next;
807: }
808: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 809: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 810: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 811: (long long)stb.st_size, last);
1.186 schwarze 812: if (verbose_mode)
813: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 814: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 815: if (response() < 0)
816: goto next;
1.161 djm 817: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 818: next: if (fd != -1) {
819: (void) close(fd);
820: fd = -1;
821: }
1.1 deraadt 822: continue;
823: }
1.97 fgsch 824: if (showprogress)
825: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 826: set_nonblock(remout);
1.1 deraadt 827: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
828: amt = bp->cnt;
1.163 dtucker 829: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 830: amt = stb.st_size - i;
831: if (!haderr) {
1.180 djm 832: if ((nr = atomicio(read, fd,
833: bp->buf, amt)) != amt) {
1.122 avsm 834: haderr = errno;
1.180 djm 835: memset(bp->buf + nr, 0, amt - nr);
836: }
1.1 deraadt 837: }
1.161 djm 838: /* Keep writing after error to retain sync */
839: if (haderr) {
840: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 841: memset(bp->buf, 0, amt);
1.161 djm 842: continue;
1.1 deraadt 843: }
1.167 djm 844: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 845: &statbytes) != amt)
846: haderr = errno;
1.1 deraadt 847: }
1.161 djm 848: unset_nonblock(remout);
1.4 aaron 849:
1.127 deraadt 850: if (fd != -1) {
851: if (close(fd) < 0 && !haderr)
852: haderr = errno;
853: fd = -1;
854: }
1.1 deraadt 855: if (!haderr)
1.107 deraadt 856: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 857: else
858: run_err("%s: %s", name, strerror(haderr));
1.18 markus 859: (void) response();
1.185 dtucker 860: if (showprogress)
861: stop_progress_meter();
1.1 deraadt 862: }
863: }
864:
865: void
1.104 djm 866: rsource(char *name, struct stat *statp)
1.1 deraadt 867: {
868: DIR *dirp;
869: struct dirent *dp;
1.181 deraadt 870: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 871:
872: if (!(dirp = opendir(name))) {
873: run_err("%s: %s", name, strerror(errno));
874: return;
875: }
876: last = strrchr(name, '/');
1.183 mmcc 877: if (last == NULL)
1.1 deraadt 878: last = name;
879: else
880: last++;
881: if (pflag) {
1.176 guenther 882: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 883: closedir(dirp);
884: return;
885: }
886: }
1.55 deraadt 887: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 888: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 889: if (verbose_mode)
1.186 schwarze 890: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 891: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 892: if (response() < 0) {
893: closedir(dirp);
894: return;
895: }
1.63 stevesk 896: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 897: if (dp->d_ino == 0)
898: continue;
899: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
900: continue;
901: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
902: run_err("%s/%s: name too long", name, dp->d_name);
903: continue;
904: }
1.55 deraadt 905: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 906: vect[0] = path;
907: source(1, vect);
908: }
1.18 markus 909: (void) closedir(dirp);
1.107 deraadt 910: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 911: (void) response();
1.1 deraadt 912: }
913:
1.189 millert 914: #define TYPE_OVERFLOW(type, val) \
915: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
916: (sizeof(type) == 8 && (val) > INT64_MAX) || \
917: (sizeof(type) != 4 && sizeof(type) != 8))
918:
1.1 deraadt 919: void
1.104 djm 920: sink(int argc, char **argv)
1.1 deraadt 921: {
922: static BUF buffer;
923: struct stat stb;
1.18 markus 924: enum {
925: YES, NO, DISPLAYED
926: } wrerr;
1.1 deraadt 927: BUF *bp;
1.122 avsm 928: off_t i;
1.124 djm 929: size_t j, count;
1.140 deraadt 930: int amt, exists, first, ofd;
931: mode_t mode, omode, mask;
1.97 fgsch 932: off_t size, statbytes;
1.176 guenther 933: unsigned long long ull;
1.36 deraadt 934: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 935: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.40 markus 936: struct timeval tv[2];
1.1 deraadt 937:
1.66 stevesk 938: #define atime tv[0]
939: #define mtime tv[1]
1.118 deraadt 940: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 941:
1.189 millert 942: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
943: SCREWUP("Unexpected off_t/time_t size");
944:
1.1 deraadt 945: setimes = targisdir = 0;
946: mask = umask(0);
947: if (!pflag)
1.18 markus 948: (void) umask(mask);
1.1 deraadt 949: if (argc != 1) {
950: run_err("ambiguous target");
951: exit(1);
952: }
953: targ = *argv;
954: if (targetshouldbedirectory)
955: verifydir(targ);
1.18 markus 956:
1.107 deraadt 957: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 958: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
959: targisdir = 1;
960: for (first = 1;; first = 0) {
961: cp = buf;
1.122 avsm 962: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 963: return;
964: if (*cp++ == '\n')
965: SCREWUP("unexpected <newline>");
966: do {
1.30 deraadt 967: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 968: SCREWUP("lost connection");
969: *cp++ = ch;
970: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
971: *cp = 0;
1.114 markus 972: if (verbose_mode)
1.186 schwarze 973: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 974:
975: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 976: if (iamremote == 0) {
977: (void) snmprintf(visbuf, sizeof(visbuf),
978: NULL, "%s", buf + 1);
1.107 deraadt 979: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 980: visbuf, strlen(visbuf));
981: }
1.1 deraadt 982: if (buf[0] == '\02')
983: exit(1);
984: ++errs;
985: continue;
986: }
987: if (buf[0] == 'E') {
1.107 deraadt 988: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 989: return;
990: }
991: if (ch == '\n')
992: *--cp = 0;
993:
994: cp = buf;
995: if (*cp == 'T') {
996: setimes++;
997: cp++;
1.176 guenther 998: if (!isdigit((unsigned char)*cp))
999: SCREWUP("mtime.sec not present");
1000: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1001: if (!cp || *cp++ != ' ')
1.1 deraadt 1002: SCREWUP("mtime.sec not delimited");
1.189 millert 1003: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1004: setimes = 0; /* out of range */
1005: mtime.tv_sec = ull;
1.66 stevesk 1006: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1007: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1008: mtime.tv_usec > 999999)
1.1 deraadt 1009: SCREWUP("mtime.usec not delimited");
1.176 guenther 1010: if (!isdigit((unsigned char)*cp))
1011: SCREWUP("atime.sec not present");
1012: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1013: if (!cp || *cp++ != ' ')
1.1 deraadt 1014: SCREWUP("atime.sec not delimited");
1.189 millert 1015: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1016: setimes = 0; /* out of range */
1017: atime.tv_sec = ull;
1.66 stevesk 1018: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1019: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1020: atime.tv_usec > 999999)
1.1 deraadt 1021: SCREWUP("atime.usec not delimited");
1.107 deraadt 1022: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1023: continue;
1024: }
1025: if (*cp != 'C' && *cp != 'D') {
1026: /*
1027: * Check for the case "rcp remote:foo\* local:bar".
1028: * In this case, the line "No match." can be returned
1029: * by the shell before the rcp command on the remote is
1030: * executed so the ^Aerror_message convention isn't
1031: * followed.
1032: */
1033: if (first) {
1034: run_err("%s", cp);
1035: exit(1);
1036: }
1037: SCREWUP("expected control record");
1038: }
1039: mode = 0;
1040: for (++cp; cp < buf + 5; cp++) {
1041: if (*cp < '0' || *cp > '7')
1042: SCREWUP("bad mode");
1043: mode = (mode << 3) | (*cp - '0');
1044: }
1045: if (*cp++ != ' ')
1046: SCREWUP("mode not delimited");
1047:
1.188 millert 1048: if (!isdigit((unsigned char)*cp))
1049: SCREWUP("size not present");
1050: ull = strtoull(cp, &cp, 10);
1051: if (!cp || *cp++ != ' ')
1.1 deraadt 1052: SCREWUP("size not delimited");
1.189 millert 1053: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1054: SCREWUP("size out of range");
1055: size = (off_t)ull;
1056:
1.114 markus 1057: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1058: run_err("error: unexpected filename: %s", cp);
1059: exit(1);
1060: }
1.1 deraadt 1061: if (targisdir) {
1062: static char *namebuf;
1.124 djm 1063: static size_t cursize;
1.1 deraadt 1064: size_t need;
1065:
1066: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1067: if (need > cursize) {
1.173 djm 1068: free(namebuf);
1.18 markus 1069: namebuf = xmalloc(need);
1.55 deraadt 1070: cursize = need;
1071: }
1072: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1073: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1074: np = namebuf;
1075: } else
1076: np = targ;
1.12 aaron 1077: curfile = cp;
1.1 deraadt 1078: exists = stat(np, &stb) == 0;
1079: if (buf[0] == 'D') {
1080: int mod_flag = pflag;
1.114 markus 1081: if (!iamrecursive)
1082: SCREWUP("received directory without -r");
1.1 deraadt 1083: if (exists) {
1084: if (!S_ISDIR(stb.st_mode)) {
1085: errno = ENOTDIR;
1086: goto bad;
1087: }
1088: if (pflag)
1.18 markus 1089: (void) chmod(np, mode);
1.1 deraadt 1090: } else {
1.18 markus 1091: /* Handle copying from a read-only
1092: directory */
1.1 deraadt 1093: mod_flag = 1;
1094: if (mkdir(np, mode | S_IRWXU) < 0)
1095: goto bad;
1096: }
1.58 danh 1097: vect[0] = xstrdup(np);
1.1 deraadt 1098: sink(1, vect);
1099: if (setimes) {
1100: setimes = 0;
1.59 deraadt 1101: if (utimes(vect[0], tv) < 0)
1.18 markus 1102: run_err("%s: set times: %s",
1.59 deraadt 1103: vect[0], strerror(errno));
1.1 deraadt 1104: }
1105: if (mod_flag)
1.59 deraadt 1106: (void) chmod(vect[0], mode);
1.173 djm 1107: free(vect[0]);
1.1 deraadt 1108: continue;
1109: }
1110: omode = mode;
1.174 dtucker 1111: mode |= S_IWUSR;
1.71 markus 1112: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1113: bad: run_err("%s: %s", np, strerror(errno));
1114: continue;
1115: }
1.107 deraadt 1116: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1117: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1118: (void) close(ofd);
1.1 deraadt 1119: continue;
1120: }
1121: cp = bp->buf;
1122: wrerr = NO;
1.7 deraadt 1123:
1.12 aaron 1124: statbytes = 0;
1.97 fgsch 1125: if (showprogress)
1126: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1127: set_nonblock(remin);
1128: for (count = i = 0; i < size; i += bp->cnt) {
1129: amt = bp->cnt;
1.1 deraadt 1130: if (i + amt > size)
1131: amt = size - i;
1132: count += amt;
1133: do {
1.167 djm 1134: j = atomicio6(read, remin, cp, amt,
1135: scpio, &statbytes);
1.122 avsm 1136: if (j == 0) {
1.161 djm 1137: run_err("%s", j != EPIPE ?
1138: strerror(errno) :
1.63 stevesk 1139: "dropped connection");
1.1 deraadt 1140: exit(1);
1141: }
1142: amt -= j;
1143: cp += j;
1144: } while (amt > 0);
1.112 djm 1145:
1.1 deraadt 1146: if (count == bp->cnt) {
1147: /* Keep reading so we stay sync'd up. */
1148: if (wrerr == NO) {
1.122 avsm 1149: if (atomicio(vwrite, ofd, bp->buf,
1150: count) != count) {
1.1 deraadt 1151: wrerr = YES;
1.122 avsm 1152: wrerrno = errno;
1.1 deraadt 1153: }
1154: }
1155: count = 0;
1156: cp = bp->buf;
1157: }
1158: }
1.161 djm 1159: unset_nonblock(remin);
1.1 deraadt 1160: if (count != 0 && wrerr == NO &&
1.122 avsm 1161: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1162: wrerr = YES;
1.122 avsm 1163: wrerrno = errno;
1.1 deraadt 1164: }
1.159 djm 1165: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1166: ftruncate(ofd, size) != 0) {
1.1 deraadt 1167: run_err("%s: truncate: %s", np, strerror(errno));
1168: wrerr = DISPLAYED;
1169: }
1170: if (pflag) {
1171: if (exists || omode != mode)
1.116 dtucker 1172: if (fchmod(ofd, omode)) {
1.1 deraadt 1173: run_err("%s: set mode: %s",
1.63 stevesk 1174: np, strerror(errno));
1.116 dtucker 1175: wrerr = DISPLAYED;
1176: }
1.1 deraadt 1177: } else {
1178: if (!exists && omode != mode)
1.116 dtucker 1179: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1180: run_err("%s: set mode: %s",
1.63 stevesk 1181: np, strerror(errno));
1.116 dtucker 1182: wrerr = DISPLAYED;
1183: }
1.1 deraadt 1184: }
1.33 provos 1185: if (close(ofd) == -1) {
1186: wrerr = YES;
1187: wrerrno = errno;
1188: }
1.18 markus 1189: (void) response();
1.185 dtucker 1190: if (showprogress)
1191: stop_progress_meter();
1.1 deraadt 1192: if (setimes && wrerr == NO) {
1193: setimes = 0;
1.40 markus 1194: if (utimes(np, tv) < 0) {
1.1 deraadt 1195: run_err("%s: set times: %s",
1.63 stevesk 1196: np, strerror(errno));
1.1 deraadt 1197: wrerr = DISPLAYED;
1198: }
1199: }
1.18 markus 1200: switch (wrerr) {
1.1 deraadt 1201: case YES:
1202: run_err("%s: %s", np, strerror(wrerrno));
1203: break;
1204: case NO:
1.107 deraadt 1205: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1206: break;
1207: case DISPLAYED:
1208: break;
1209: }
1210: }
1211: screwup:
1212: run_err("protocol error: %s", why);
1213: exit(1);
1214: }
1215:
1216: int
1.86 itojun 1217: response(void)
1.1 deraadt 1218: {
1.186 schwarze 1219: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1220:
1.30 deraadt 1221: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1222: lostconn(0);
1223:
1224: cp = rbuf;
1.18 markus 1225: switch (resp) {
1226: case 0: /* ok */
1.1 deraadt 1227: return (0);
1228: default:
1229: *cp++ = resp;
1230: /* FALLTHROUGH */
1.18 markus 1231: case 1: /* error, followed by error msg */
1232: case 2: /* fatal error, "" */
1.1 deraadt 1233: do {
1.30 deraadt 1234: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1235: lostconn(0);
1236: *cp++ = ch;
1237: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1238:
1.186 schwarze 1239: if (!iamremote) {
1240: cp[-1] = '\0';
1241: (void) snmprintf(visbuf, sizeof(visbuf),
1242: NULL, "%s\n", rbuf);
1243: (void) atomicio(vwrite, STDERR_FILENO,
1244: visbuf, strlen(visbuf));
1245: }
1.1 deraadt 1246: ++errs;
1247: if (resp == 1)
1248: return (-1);
1249: exit(1);
1250: }
1251: /* NOTREACHED */
1252: }
1253:
1254: void
1.86 itojun 1255: usage(void)
1.1 deraadt 1256: {
1.83 stevesk 1257: (void) fprintf(stderr,
1.191 jmc 1258: "usage: scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.193 ! millert 1259: " [-l limit] [-o ssh_option] [-P port] [-S program] source ... target\n");
1.1 deraadt 1260: exit(1);
1261: }
1262:
1263: void
1.18 markus 1264: run_err(const char *fmt,...)
1.1 deraadt 1265: {
1266: static FILE *fp;
1267: va_list ap;
1268:
1269: ++errs;
1.136 biorn 1270: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1271: (void) fprintf(fp, "%c", 0x01);
1272: (void) fprintf(fp, "scp: ");
1273: va_start(ap, fmt);
1274: (void) vfprintf(fp, fmt, ap);
1275: va_end(ap);
1276: (void) fprintf(fp, "\n");
1277: (void) fflush(fp);
1278: }
1.18 markus 1279:
1280: if (!iamremote) {
1.73 markus 1281: va_start(ap, fmt);
1.186 schwarze 1282: vfmprintf(stderr, fmt, ap);
1.73 markus 1283: va_end(ap);
1.18 markus 1284: fprintf(stderr, "\n");
1285: }
1.1 deraadt 1286: }
1287:
1288: void
1.104 djm 1289: verifydir(char *cp)
1.1 deraadt 1290: {
1291: struct stat stb;
1292:
1293: if (!stat(cp, &stb)) {
1294: if (S_ISDIR(stb.st_mode))
1295: return;
1296: errno = ENOTDIR;
1297: }
1298: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1299: killchild(0);
1.1 deraadt 1300: }
1301:
1302: int
1.104 djm 1303: okname(char *cp0)
1.1 deraadt 1304: {
1305: int c;
1306: char *cp;
1307:
1308: cp = cp0;
1309: do {
1.75 deraadt 1310: c = (int)*cp;
1.1 deraadt 1311: if (c & 0200)
1312: goto bad;
1.179 deraadt 1313: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1314: switch (c) {
1315: case '\'':
1316: case '"':
1317: case '`':
1318: case ' ':
1319: case '#':
1320: goto bad;
1321: default:
1322: break;
1323: }
1324: }
1.1 deraadt 1325: } while (*++cp);
1326: return (1);
1327:
1.186 schwarze 1328: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1329: return (0);
1330: }
1331:
1332: BUF *
1.104 djm 1333: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1334: {
1335: size_t size;
1336: struct stat stb;
1337:
1338: if (fstat(fd, &stb) < 0) {
1339: run_err("fstat: %s", strerror(errno));
1340: return (0);
1341: }
1.187 deraadt 1342: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1343: if (size == 0)
1.18 markus 1344: size = blksize;
1.1 deraadt 1345: if (bp->cnt >= size)
1346: return (bp);
1.192 deraadt 1347: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1348: bp->cnt = size;
1349: return (bp);
1350: }
1351:
1352: void
1.104 djm 1353: lostconn(int signo)
1.1 deraadt 1354: {
1355: if (!iamremote)
1.172 dtucker 1356: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1357: if (signo)
1358: _exit(1);
1359: else
1360: exit(1);
1.4 aaron 1361: }
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