Annotation of src/usr.bin/ssh/scp.c, Revision 1.195
1.195 ! djm 1: /* $OpenBSD: scp.c,v 1.194 2017/12/18 17:28:54 millert 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");
1.195 ! djm 401: addargs(&args, "-oRemoteCommand=none");
! 402: addargs(&args, "-oRequestTTY=no");
1.41 markus 403:
1.1 deraadt 404: fflag = tflag = 0;
1.169 markus 405: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
1.18 markus 406: switch (ch) {
407: /* User-visible flags. */
1.100 markus 408: case '1':
1.190 djm 409: fatal("SSH protocol v.1 is no longer supported");
410: break;
1.100 markus 411: case '2':
1.190 djm 412: /* Ignored */
413: break;
1.23 markus 414: case '4':
1.41 markus 415: case '6':
416: case 'C':
1.70 mouring 417: addargs(&args, "-%c", ch);
1.168 djm 418: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 419: break;
1.169 markus 420: case '3':
421: throughlocal = 1;
422: break;
1.41 markus 423: case 'o':
424: case 'c':
425: case 'i':
1.83 stevesk 426: case 'F':
1.168 djm 427: addargs(&remote_remote_args, "-%c", ch);
428: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 429: addargs(&args, "-%c", ch);
430: addargs(&args, "%s", optarg);
1.23 markus 431: break;
1.41 markus 432: case 'P':
1.193 millert 433: sshport = a2port(optarg);
434: if (sshport <= 0)
435: fatal("bad port \"%s\"\n", optarg);
1.41 markus 436: break;
437: case 'B':
1.168 djm 438: addargs(&remote_remote_args, "-oBatchmode=yes");
439: addargs(&args, "-oBatchmode=yes");
1.23 markus 440: break;
1.99 markus 441: case 'l':
1.167 djm 442: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
443: &errstr);
444: if (errstr != NULL)
1.99 markus 445: usage();
1.167 djm 446: limit_kbps *= 1024; /* kbps */
447: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 448: break;
1.1 deraadt 449: case 'p':
450: pflag = 1;
451: break;
452: case 'r':
453: iamrecursive = 1;
454: break;
1.34 deraadt 455: case 'S':
1.41 markus 456: ssh_program = xstrdup(optarg);
457: break;
458: case 'v':
1.72 markus 459: addargs(&args, "-v");
1.168 djm 460: addargs(&remote_remote_args, "-v");
1.41 markus 461: verbose_mode = 1;
462: break;
463: case 'q':
1.111 dtucker 464: addargs(&args, "-q");
1.168 djm 465: addargs(&remote_remote_args, "-q");
1.41 markus 466: showprogress = 0;
1.34 deraadt 467: break;
468:
1.18 markus 469: /* Server options. */
1.1 deraadt 470: case 'd':
471: targetshouldbedirectory = 1;
472: break;
1.18 markus 473: case 'f': /* "from" */
1.1 deraadt 474: iamremote = 1;
475: fflag = 1;
476: break;
1.18 markus 477: case 't': /* "to" */
1.1 deraadt 478: iamremote = 1;
479: tflag = 1;
480: break;
481: default:
482: usage();
483: }
484: argc -= optind;
485: argv += optind;
486:
487: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 488: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 489:
1.156 djm 490: if (!isatty(STDOUT_FILENO))
1.7 deraadt 491: showprogress = 0;
1.184 deraadt 492:
493: if (pflag) {
494: /* Cannot pledge: -p allows setuid/setgid files... */
495: } else {
496: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
497: NULL) == -1) {
498: perror("pledge");
499: exit(1);
500: }
501: }
1.7 deraadt 502:
1.1 deraadt 503: remin = STDIN_FILENO;
504: remout = STDOUT_FILENO;
505:
1.52 stevesk 506: if (fflag) {
1.18 markus 507: /* Follow "protocol", send data. */
508: (void) response();
1.1 deraadt 509: source(argc, argv);
510: exit(errs != 0);
511: }
1.18 markus 512: if (tflag) {
513: /* Receive data. */
1.1 deraadt 514: sink(argc, argv);
515: exit(errs != 0);
516: }
517: if (argc < 2)
518: usage();
519: if (argc > 2)
520: targetshouldbedirectory = 1;
521:
522: remin = remout = -1;
1.92 markus 523: do_cmd_pid = -1;
1.1 deraadt 524: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 525: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
526: verbose_mode ? " -v" : "",
1.35 deraadt 527: iamrecursive ? " -r" : "", pflag ? " -p" : "",
528: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 529:
1.18 markus 530: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 531:
1.193 millert 532: if (colon(argv[argc - 1])) /* Dest is remote host. */
533: toremote(argc, argv);
1.1 deraadt 534: else {
535: if (targetshouldbedirectory)
536: verifydir(argv[argc - 1]);
1.130 djm 537: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 538: }
539: /*
540: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 541: * and no error has occurred yet
1.92 markus 542: */
543: if (do_cmd_pid != -1 && errs == 0) {
544: if (remin != -1)
545: (void) close(remin);
546: if (remout != -1)
547: (void) close(remout);
548: if (waitpid(do_cmd_pid, &status, 0) == -1)
549: errs = 1;
550: else {
551: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
552: errs = 1;
553: }
1.1 deraadt 554: }
555: exit(errs != 0);
556: }
557:
1.167 djm 558: /* Callback from atomicio6 to update progress meter and limit bandwidth */
559: static int
560: scpio(void *_cnt, size_t s)
1.161 djm 561: {
1.167 djm 562: off_t *cnt = (off_t *)_cnt;
563:
564: *cnt += s;
565: if (limit_kbps > 0)
566: bandwidth_limit(&bwlimit, s);
567: return 0;
1.161 djm 568: }
569:
1.176 guenther 570: static int
571: do_times(int fd, int verb, const struct stat *sb)
572: {
573: /* strlen(2^64) == 20; strlen(10^6) == 7 */
574: char buf[(20 + 7 + 2) * 2 + 2];
575:
576: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
577: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
578: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
579: if (verb) {
580: fprintf(stderr, "File mtime %lld atime %lld\n",
581: (long long)sb->st_mtime, (long long)sb->st_atime);
582: fprintf(stderr, "Sending file timestamps: %s", buf);
583: }
584: (void) atomicio(vwrite, fd, buf, strlen(buf));
585: return (response());
586: }
587:
1.194 millert 588: static int
589: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
590: char **pathp)
591: {
592: int r;
593:
594: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
595: if (r == 0 && *pathp == NULL)
596: *pathp = xstrdup(".");
597: return r;
598: }
599:
1.1 deraadt 600: void
1.193 millert 601: toremote(int argc, char **argv)
1.1 deraadt 602: {
1.193 millert 603: char *suser = NULL, *host = NULL, *src = NULL;
604: char *bp, *tuser, *thost, *targ;
605: int sport = -1, tport = -1;
1.129 djm 606: arglist alist;
1.193 millert 607: int i, r;
1.168 djm 608: u_int j;
1.129 djm 609:
610: memset(&alist, '\0', sizeof(alist));
611: alist.list = NULL;
1.1 deraadt 612:
1.193 millert 613: /* Parse target */
1.194 millert 614: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
615: if (r == -1) {
616: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
617: ++errs;
618: goto out;
619: }
1.193 millert 620: if (r != 0) {
621: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 622: &targ) == -1) {
623: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
624: ++errs;
1.193 millert 625: goto out;
1.194 millert 626: }
1.129 djm 627: }
1.194 millert 628: if (tuser != NULL && !okname(tuser)) {
629: ++errs;
1.193 millert 630: goto out;
1.194 millert 631: }
1.129 djm 632:
1.193 millert 633: /* Parse source files */
1.1 deraadt 634: for (i = 0; i < argc - 1; i++) {
1.193 millert 635: free(suser);
636: free(host);
637: free(src);
1.194 millert 638: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
639: if (r == -1) {
640: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
641: ++errs;
642: continue;
643: }
644: if (r != 0) {
1.193 millert 645: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 646: }
1.193 millert 647: if (suser != NULL && !okname(suser)) {
648: ++errs;
649: continue;
650: }
651: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 652: xasprintf(&bp, "%s -f %s%s", cmd,
653: *src == '-' ? "-- " : "", src);
1.193 millert 654: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 655: exit(1);
1.173 djm 656: free(bp);
1.171 djm 657: xasprintf(&bp, "%s -t %s%s", cmd,
658: *targ == '-' ? "-- " : "", targ);
1.193 millert 659: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 660: exit(1);
1.173 djm 661: free(bp);
1.169 markus 662: (void) close(remin);
663: (void) close(remout);
664: remin = remout = -1;
1.193 millert 665: } else if (host) { /* standard remote to remote */
666: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
667: /* This would require the remote support URIs */
668: fatal("target port not supported with two "
669: "remote hosts without the -3 option");
670: }
671:
1.129 djm 672: freeargs(&alist);
673: addargs(&alist, "%s", ssh_program);
674: addargs(&alist, "-x");
1.168 djm 675: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 676: addargs(&alist, "-n");
1.168 djm 677: for (j = 0; j < remote_remote_args.num; j++) {
678: addargs(&alist, "%s",
679: remote_remote_args.list[j]);
680: }
1.193 millert 681:
682: if (sport != -1) {
683: addargs(&alist, "-p");
684: addargs(&alist, "%d", sport);
685: }
686: if (suser) {
1.129 djm 687: addargs(&alist, "-l");
688: addargs(&alist, "%s", suser);
1.23 markus 689: }
1.165 guenther 690: addargs(&alist, "--");
1.129 djm 691: addargs(&alist, "%s", host);
692: addargs(&alist, "%s", cmd);
693: addargs(&alist, "%s", src);
694: addargs(&alist, "%s%s%s:%s",
695: tuser ? tuser : "", tuser ? "@" : "",
696: thost, targ);
697: if (do_local_cmd(&alist) != 0)
1.109 markus 698: errs = 1;
1.18 markus 699: } else { /* local to remote */
1.1 deraadt 700: if (remin == -1) {
1.171 djm 701: xasprintf(&bp, "%s -t %s%s", cmd,
702: *targ == '-' ? "-- " : "", targ);
1.193 millert 703: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 704: &remout) < 0)
1.18 markus 705: exit(1);
1.1 deraadt 706: if (response() < 0)
707: exit(1);
1.173 djm 708: free(bp);
1.1 deraadt 709: }
1.18 markus 710: source(1, argv + i);
1.1 deraadt 711: }
712: }
1.193 millert 713: out:
714: free(tuser);
715: free(thost);
716: free(targ);
717: free(suser);
718: free(host);
719: free(src);
1.1 deraadt 720: }
721:
722: void
1.104 djm 723: tolocal(int argc, char **argv)
1.1 deraadt 724: {
1.193 millert 725: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 726: arglist alist;
1.193 millert 727: int i, r, sport = -1;
1.129 djm 728:
729: memset(&alist, '\0', sizeof(alist));
730: alist.list = NULL;
1.1 deraadt 731:
732: for (i = 0; i < argc - 1; i++) {
1.193 millert 733: free(suser);
734: free(host);
735: free(src);
1.194 millert 736: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 737: if (r == -1) {
1.194 millert 738: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 739: ++errs;
740: continue;
741: }
742: if (r != 0)
743: parse_user_host_path(argv[i], &suser, &host, &src);
744: if (suser != NULL && !okname(suser)) {
745: ++errs;
746: continue;
747: }
748: if (!host) { /* Local to local. */
1.129 djm 749: freeargs(&alist);
750: addargs(&alist, "%s", _PATH_CP);
751: if (iamrecursive)
752: addargs(&alist, "-r");
753: if (pflag)
754: addargs(&alist, "-p");
1.165 guenther 755: addargs(&alist, "--");
1.129 djm 756: addargs(&alist, "%s", argv[i]);
757: addargs(&alist, "%s", argv[argc-1]);
758: if (do_local_cmd(&alist))
1.1 deraadt 759: ++errs;
760: continue;
761: }
1.193 millert 762: /* Remote to local. */
1.171 djm 763: xasprintf(&bp, "%s -f %s%s",
764: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 765: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 766: free(bp);
1.18 markus 767: ++errs;
768: continue;
1.1 deraadt 769: }
1.173 djm 770: free(bp);
1.1 deraadt 771: sink(1, argv + argc - 1);
1.18 markus 772: (void) close(remin);
1.1 deraadt 773: remin = remout = -1;
774: }
1.193 millert 775: free(suser);
776: free(host);
777: free(src);
1.1 deraadt 778: }
779:
780: void
1.104 djm 781: source(int argc, char **argv)
1.1 deraadt 782: {
783: struct stat stb;
784: static BUF buffer;
785: BUF *bp;
1.163 dtucker 786: off_t i, statbytes;
1.180 djm 787: size_t amt, nr;
1.125 dtucker 788: int fd = -1, haderr, indx;
1.181 deraadt 789: char *last, *name, buf[2048], encname[PATH_MAX];
1.65 deraadt 790: int len;
1.1 deraadt 791:
792: for (indx = 0; indx < argc; ++indx) {
1.18 markus 793: name = argv[indx];
1.11 aaron 794: statbytes = 0;
1.65 deraadt 795: len = strlen(name);
796: while (len > 1 && name[len-1] == '/')
797: name[--len] = '\0';
1.158 dtucker 798: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
799: goto syserr;
1.85 markus 800: if (strchr(name, '\n') != NULL) {
1.158 dtucker 801: strnvis(encname, name, sizeof(encname), VIS_NL);
802: name = encname;
1.85 markus 803: }
1.1 deraadt 804: if (fstat(fd, &stb) < 0) {
805: syserr: run_err("%s: %s", name, strerror(errno));
806: goto next;
807: }
1.163 dtucker 808: if (stb.st_size < 0) {
809: run_err("%s: %s", name, "Negative file size");
810: goto next;
811: }
1.157 djm 812: unset_nonblock(fd);
1.1 deraadt 813: switch (stb.st_mode & S_IFMT) {
814: case S_IFREG:
815: break;
816: case S_IFDIR:
817: if (iamrecursive) {
818: rsource(name, &stb);
819: goto next;
820: }
821: /* FALLTHROUGH */
822: default:
823: run_err("%s: not a regular file", name);
824: goto next;
825: }
826: if ((last = strrchr(name, '/')) == NULL)
827: last = name;
828: else
829: ++last;
1.11 aaron 830: curfile = last;
1.1 deraadt 831: if (pflag) {
1.176 guenther 832: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 833: goto next;
834: }
835: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 836: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 837: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 838: (long long)stb.st_size, last);
1.186 schwarze 839: if (verbose_mode)
840: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 841: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 842: if (response() < 0)
843: goto next;
1.161 djm 844: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 845: next: if (fd != -1) {
846: (void) close(fd);
847: fd = -1;
848: }
1.1 deraadt 849: continue;
850: }
1.97 fgsch 851: if (showprogress)
852: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 853: set_nonblock(remout);
1.1 deraadt 854: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
855: amt = bp->cnt;
1.163 dtucker 856: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 857: amt = stb.st_size - i;
858: if (!haderr) {
1.180 djm 859: if ((nr = atomicio(read, fd,
860: bp->buf, amt)) != amt) {
1.122 avsm 861: haderr = errno;
1.180 djm 862: memset(bp->buf + nr, 0, amt - nr);
863: }
1.1 deraadt 864: }
1.161 djm 865: /* Keep writing after error to retain sync */
866: if (haderr) {
867: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 868: memset(bp->buf, 0, amt);
1.161 djm 869: continue;
1.1 deraadt 870: }
1.167 djm 871: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 872: &statbytes) != amt)
873: haderr = errno;
1.1 deraadt 874: }
1.161 djm 875: unset_nonblock(remout);
1.4 aaron 876:
1.127 deraadt 877: if (fd != -1) {
878: if (close(fd) < 0 && !haderr)
879: haderr = errno;
880: fd = -1;
881: }
1.1 deraadt 882: if (!haderr)
1.107 deraadt 883: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 884: else
885: run_err("%s: %s", name, strerror(haderr));
1.18 markus 886: (void) response();
1.185 dtucker 887: if (showprogress)
888: stop_progress_meter();
1.1 deraadt 889: }
890: }
891:
892: void
1.104 djm 893: rsource(char *name, struct stat *statp)
1.1 deraadt 894: {
895: DIR *dirp;
896: struct dirent *dp;
1.181 deraadt 897: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 898:
899: if (!(dirp = opendir(name))) {
900: run_err("%s: %s", name, strerror(errno));
901: return;
902: }
903: last = strrchr(name, '/');
1.183 mmcc 904: if (last == NULL)
1.1 deraadt 905: last = name;
906: else
907: last++;
908: if (pflag) {
1.176 guenther 909: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 910: closedir(dirp);
911: return;
912: }
913: }
1.55 deraadt 914: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 915: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 916: if (verbose_mode)
1.186 schwarze 917: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 918: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 919: if (response() < 0) {
920: closedir(dirp);
921: return;
922: }
1.63 stevesk 923: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 924: if (dp->d_ino == 0)
925: continue;
926: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
927: continue;
928: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
929: run_err("%s/%s: name too long", name, dp->d_name);
930: continue;
931: }
1.55 deraadt 932: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 933: vect[0] = path;
934: source(1, vect);
935: }
1.18 markus 936: (void) closedir(dirp);
1.107 deraadt 937: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 938: (void) response();
1.1 deraadt 939: }
940:
1.189 millert 941: #define TYPE_OVERFLOW(type, val) \
942: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
943: (sizeof(type) == 8 && (val) > INT64_MAX) || \
944: (sizeof(type) != 4 && sizeof(type) != 8))
945:
1.1 deraadt 946: void
1.104 djm 947: sink(int argc, char **argv)
1.1 deraadt 948: {
949: static BUF buffer;
950: struct stat stb;
1.18 markus 951: enum {
952: YES, NO, DISPLAYED
953: } wrerr;
1.1 deraadt 954: BUF *bp;
1.122 avsm 955: off_t i;
1.124 djm 956: size_t j, count;
1.140 deraadt 957: int amt, exists, first, ofd;
958: mode_t mode, omode, mask;
1.97 fgsch 959: off_t size, statbytes;
1.176 guenther 960: unsigned long long ull;
1.36 deraadt 961: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 962: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.40 markus 963: struct timeval tv[2];
1.1 deraadt 964:
1.66 stevesk 965: #define atime tv[0]
966: #define mtime tv[1]
1.118 deraadt 967: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 968:
1.189 millert 969: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
970: SCREWUP("Unexpected off_t/time_t size");
971:
1.1 deraadt 972: setimes = targisdir = 0;
973: mask = umask(0);
974: if (!pflag)
1.18 markus 975: (void) umask(mask);
1.1 deraadt 976: if (argc != 1) {
977: run_err("ambiguous target");
978: exit(1);
979: }
980: targ = *argv;
981: if (targetshouldbedirectory)
982: verifydir(targ);
1.18 markus 983:
1.107 deraadt 984: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 985: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
986: targisdir = 1;
987: for (first = 1;; first = 0) {
988: cp = buf;
1.122 avsm 989: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 990: return;
991: if (*cp++ == '\n')
992: SCREWUP("unexpected <newline>");
993: do {
1.30 deraadt 994: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 995: SCREWUP("lost connection");
996: *cp++ = ch;
997: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
998: *cp = 0;
1.114 markus 999: if (verbose_mode)
1.186 schwarze 1000: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1001:
1002: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1003: if (iamremote == 0) {
1004: (void) snmprintf(visbuf, sizeof(visbuf),
1005: NULL, "%s", buf + 1);
1.107 deraadt 1006: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1007: visbuf, strlen(visbuf));
1008: }
1.1 deraadt 1009: if (buf[0] == '\02')
1010: exit(1);
1011: ++errs;
1012: continue;
1013: }
1014: if (buf[0] == 'E') {
1.107 deraadt 1015: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1016: return;
1017: }
1018: if (ch == '\n')
1019: *--cp = 0;
1020:
1021: cp = buf;
1022: if (*cp == 'T') {
1023: setimes++;
1024: cp++;
1.176 guenther 1025: if (!isdigit((unsigned char)*cp))
1026: SCREWUP("mtime.sec not present");
1027: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1028: if (!cp || *cp++ != ' ')
1.1 deraadt 1029: SCREWUP("mtime.sec not delimited");
1.189 millert 1030: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1031: setimes = 0; /* out of range */
1032: mtime.tv_sec = ull;
1.66 stevesk 1033: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1034: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1035: mtime.tv_usec > 999999)
1.1 deraadt 1036: SCREWUP("mtime.usec not delimited");
1.176 guenther 1037: if (!isdigit((unsigned char)*cp))
1038: SCREWUP("atime.sec not present");
1039: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1040: if (!cp || *cp++ != ' ')
1.1 deraadt 1041: SCREWUP("atime.sec not delimited");
1.189 millert 1042: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1043: setimes = 0; /* out of range */
1044: atime.tv_sec = ull;
1.66 stevesk 1045: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1046: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1047: atime.tv_usec > 999999)
1.1 deraadt 1048: SCREWUP("atime.usec not delimited");
1.107 deraadt 1049: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1050: continue;
1051: }
1052: if (*cp != 'C' && *cp != 'D') {
1053: /*
1054: * Check for the case "rcp remote:foo\* local:bar".
1055: * In this case, the line "No match." can be returned
1056: * by the shell before the rcp command on the remote is
1057: * executed so the ^Aerror_message convention isn't
1058: * followed.
1059: */
1060: if (first) {
1061: run_err("%s", cp);
1062: exit(1);
1063: }
1064: SCREWUP("expected control record");
1065: }
1066: mode = 0;
1067: for (++cp; cp < buf + 5; cp++) {
1068: if (*cp < '0' || *cp > '7')
1069: SCREWUP("bad mode");
1070: mode = (mode << 3) | (*cp - '0');
1071: }
1072: if (*cp++ != ' ')
1073: SCREWUP("mode not delimited");
1074:
1.188 millert 1075: if (!isdigit((unsigned char)*cp))
1076: SCREWUP("size not present");
1077: ull = strtoull(cp, &cp, 10);
1078: if (!cp || *cp++ != ' ')
1.1 deraadt 1079: SCREWUP("size not delimited");
1.189 millert 1080: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1081: SCREWUP("size out of range");
1082: size = (off_t)ull;
1083:
1.114 markus 1084: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1085: run_err("error: unexpected filename: %s", cp);
1086: exit(1);
1087: }
1.1 deraadt 1088: if (targisdir) {
1089: static char *namebuf;
1.124 djm 1090: static size_t cursize;
1.1 deraadt 1091: size_t need;
1092:
1093: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1094: if (need > cursize) {
1.173 djm 1095: free(namebuf);
1.18 markus 1096: namebuf = xmalloc(need);
1.55 deraadt 1097: cursize = need;
1098: }
1099: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1100: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1101: np = namebuf;
1102: } else
1103: np = targ;
1.12 aaron 1104: curfile = cp;
1.1 deraadt 1105: exists = stat(np, &stb) == 0;
1106: if (buf[0] == 'D') {
1107: int mod_flag = pflag;
1.114 markus 1108: if (!iamrecursive)
1109: SCREWUP("received directory without -r");
1.1 deraadt 1110: if (exists) {
1111: if (!S_ISDIR(stb.st_mode)) {
1112: errno = ENOTDIR;
1113: goto bad;
1114: }
1115: if (pflag)
1.18 markus 1116: (void) chmod(np, mode);
1.1 deraadt 1117: } else {
1.18 markus 1118: /* Handle copying from a read-only
1119: directory */
1.1 deraadt 1120: mod_flag = 1;
1121: if (mkdir(np, mode | S_IRWXU) < 0)
1122: goto bad;
1123: }
1.58 danh 1124: vect[0] = xstrdup(np);
1.1 deraadt 1125: sink(1, vect);
1126: if (setimes) {
1127: setimes = 0;
1.59 deraadt 1128: if (utimes(vect[0], tv) < 0)
1.18 markus 1129: run_err("%s: set times: %s",
1.59 deraadt 1130: vect[0], strerror(errno));
1.1 deraadt 1131: }
1132: if (mod_flag)
1.59 deraadt 1133: (void) chmod(vect[0], mode);
1.173 djm 1134: free(vect[0]);
1.1 deraadt 1135: continue;
1136: }
1137: omode = mode;
1.174 dtucker 1138: mode |= S_IWUSR;
1.71 markus 1139: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1140: bad: run_err("%s: %s", np, strerror(errno));
1141: continue;
1142: }
1.107 deraadt 1143: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1144: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1145: (void) close(ofd);
1.1 deraadt 1146: continue;
1147: }
1148: cp = bp->buf;
1149: wrerr = NO;
1.7 deraadt 1150:
1.12 aaron 1151: statbytes = 0;
1.97 fgsch 1152: if (showprogress)
1153: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1154: set_nonblock(remin);
1155: for (count = i = 0; i < size; i += bp->cnt) {
1156: amt = bp->cnt;
1.1 deraadt 1157: if (i + amt > size)
1158: amt = size - i;
1159: count += amt;
1160: do {
1.167 djm 1161: j = atomicio6(read, remin, cp, amt,
1162: scpio, &statbytes);
1.122 avsm 1163: if (j == 0) {
1.161 djm 1164: run_err("%s", j != EPIPE ?
1165: strerror(errno) :
1.63 stevesk 1166: "dropped connection");
1.1 deraadt 1167: exit(1);
1168: }
1169: amt -= j;
1170: cp += j;
1171: } while (amt > 0);
1.112 djm 1172:
1.1 deraadt 1173: if (count == bp->cnt) {
1174: /* Keep reading so we stay sync'd up. */
1175: if (wrerr == NO) {
1.122 avsm 1176: if (atomicio(vwrite, ofd, bp->buf,
1177: count) != count) {
1.1 deraadt 1178: wrerr = YES;
1.122 avsm 1179: wrerrno = errno;
1.1 deraadt 1180: }
1181: }
1182: count = 0;
1183: cp = bp->buf;
1184: }
1185: }
1.161 djm 1186: unset_nonblock(remin);
1.1 deraadt 1187: if (count != 0 && wrerr == NO &&
1.122 avsm 1188: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1189: wrerr = YES;
1.122 avsm 1190: wrerrno = errno;
1.1 deraadt 1191: }
1.159 djm 1192: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1193: ftruncate(ofd, size) != 0) {
1.1 deraadt 1194: run_err("%s: truncate: %s", np, strerror(errno));
1195: wrerr = DISPLAYED;
1196: }
1197: if (pflag) {
1198: if (exists || omode != mode)
1.116 dtucker 1199: if (fchmod(ofd, omode)) {
1.1 deraadt 1200: run_err("%s: set mode: %s",
1.63 stevesk 1201: np, strerror(errno));
1.116 dtucker 1202: wrerr = DISPLAYED;
1203: }
1.1 deraadt 1204: } else {
1205: if (!exists && omode != mode)
1.116 dtucker 1206: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1207: run_err("%s: set mode: %s",
1.63 stevesk 1208: np, strerror(errno));
1.116 dtucker 1209: wrerr = DISPLAYED;
1210: }
1.1 deraadt 1211: }
1.33 provos 1212: if (close(ofd) == -1) {
1213: wrerr = YES;
1214: wrerrno = errno;
1215: }
1.18 markus 1216: (void) response();
1.185 dtucker 1217: if (showprogress)
1218: stop_progress_meter();
1.1 deraadt 1219: if (setimes && wrerr == NO) {
1220: setimes = 0;
1.40 markus 1221: if (utimes(np, tv) < 0) {
1.1 deraadt 1222: run_err("%s: set times: %s",
1.63 stevesk 1223: np, strerror(errno));
1.1 deraadt 1224: wrerr = DISPLAYED;
1225: }
1226: }
1.18 markus 1227: switch (wrerr) {
1.1 deraadt 1228: case YES:
1229: run_err("%s: %s", np, strerror(wrerrno));
1230: break;
1231: case NO:
1.107 deraadt 1232: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1233: break;
1234: case DISPLAYED:
1235: break;
1236: }
1237: }
1238: screwup:
1239: run_err("protocol error: %s", why);
1240: exit(1);
1241: }
1242:
1243: int
1.86 itojun 1244: response(void)
1.1 deraadt 1245: {
1.186 schwarze 1246: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1247:
1.30 deraadt 1248: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1249: lostconn(0);
1250:
1251: cp = rbuf;
1.18 markus 1252: switch (resp) {
1253: case 0: /* ok */
1.1 deraadt 1254: return (0);
1255: default:
1256: *cp++ = resp;
1257: /* FALLTHROUGH */
1.18 markus 1258: case 1: /* error, followed by error msg */
1259: case 2: /* fatal error, "" */
1.1 deraadt 1260: do {
1.30 deraadt 1261: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1262: lostconn(0);
1263: *cp++ = ch;
1264: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1265:
1.186 schwarze 1266: if (!iamremote) {
1267: cp[-1] = '\0';
1268: (void) snmprintf(visbuf, sizeof(visbuf),
1269: NULL, "%s\n", rbuf);
1270: (void) atomicio(vwrite, STDERR_FILENO,
1271: visbuf, strlen(visbuf));
1272: }
1.1 deraadt 1273: ++errs;
1274: if (resp == 1)
1275: return (-1);
1276: exit(1);
1277: }
1278: /* NOTREACHED */
1279: }
1280:
1281: void
1.86 itojun 1282: usage(void)
1.1 deraadt 1283: {
1.83 stevesk 1284: (void) fprintf(stderr,
1.191 jmc 1285: "usage: scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.193 millert 1286: " [-l limit] [-o ssh_option] [-P port] [-S program] source ... target\n");
1.1 deraadt 1287: exit(1);
1288: }
1289:
1290: void
1.18 markus 1291: run_err(const char *fmt,...)
1.1 deraadt 1292: {
1293: static FILE *fp;
1294: va_list ap;
1295:
1296: ++errs;
1.136 biorn 1297: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1298: (void) fprintf(fp, "%c", 0x01);
1299: (void) fprintf(fp, "scp: ");
1300: va_start(ap, fmt);
1301: (void) vfprintf(fp, fmt, ap);
1302: va_end(ap);
1303: (void) fprintf(fp, "\n");
1304: (void) fflush(fp);
1305: }
1.18 markus 1306:
1307: if (!iamremote) {
1.73 markus 1308: va_start(ap, fmt);
1.186 schwarze 1309: vfmprintf(stderr, fmt, ap);
1.73 markus 1310: va_end(ap);
1.18 markus 1311: fprintf(stderr, "\n");
1312: }
1.1 deraadt 1313: }
1314:
1315: void
1.104 djm 1316: verifydir(char *cp)
1.1 deraadt 1317: {
1318: struct stat stb;
1319:
1320: if (!stat(cp, &stb)) {
1321: if (S_ISDIR(stb.st_mode))
1322: return;
1323: errno = ENOTDIR;
1324: }
1325: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1326: killchild(0);
1.1 deraadt 1327: }
1328:
1329: int
1.104 djm 1330: okname(char *cp0)
1.1 deraadt 1331: {
1332: int c;
1333: char *cp;
1334:
1335: cp = cp0;
1336: do {
1.75 deraadt 1337: c = (int)*cp;
1.1 deraadt 1338: if (c & 0200)
1339: goto bad;
1.179 deraadt 1340: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1341: switch (c) {
1342: case '\'':
1343: case '"':
1344: case '`':
1345: case ' ':
1346: case '#':
1347: goto bad;
1348: default:
1349: break;
1350: }
1351: }
1.1 deraadt 1352: } while (*++cp);
1353: return (1);
1354:
1.186 schwarze 1355: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1356: return (0);
1357: }
1358:
1359: BUF *
1.104 djm 1360: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1361: {
1362: size_t size;
1363: struct stat stb;
1364:
1365: if (fstat(fd, &stb) < 0) {
1366: run_err("fstat: %s", strerror(errno));
1367: return (0);
1368: }
1.187 deraadt 1369: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1370: if (size == 0)
1.18 markus 1371: size = blksize;
1.1 deraadt 1372: if (bp->cnt >= size)
1373: return (bp);
1.192 deraadt 1374: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1375: bp->cnt = size;
1376: return (bp);
1377: }
1378:
1379: void
1.104 djm 1380: lostconn(int signo)
1.1 deraadt 1381: {
1382: if (!iamremote)
1.172 dtucker 1383: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1384: if (signo)
1385: _exit(1);
1386: else
1387: exit(1);
1.4 aaron 1388: }
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