Annotation of src/usr.bin/ssh/scp.c, Revision 1.202
1.202 ! djm 1: /* $OpenBSD: scp.c,v 1.201 2019/01/24 16:52:17 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:
1.132 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>
1.202 ! djm 85: #include <fnmatch.h>
1.186 schwarze 86: #include <locale.h>
1.143 stevesk 87: #include <pwd.h>
1.133 stevesk 88: #include <signal.h>
1.146 stevesk 89: #include <stdarg.h>
1.189 millert 90: #include <stdint.h>
1.154 stevesk 91: #include <stdio.h>
1.153 stevesk 92: #include <stdlib.h>
1.150 stevesk 93: #include <string.h>
1.149 stevesk 94: #include <time.h>
1.148 stevesk 95: #include <unistd.h>
1.181 deraadt 96: #include <limits.h>
1.158 dtucker 97: #include <vis.h>
1.1 deraadt 98:
99: #include "xmalloc.h"
1.193 millert 100: #include "ssh.h"
1.51 markus 101: #include "atomicio.h"
1.50 markus 102: #include "pathnames.h"
1.51 markus 103: #include "log.h"
1.69 mouring 104: #include "misc.h"
1.97 fgsch 105: #include "progressmeter.h"
1.186 schwarze 106: #include "utf8.h"
1.1 deraadt 107:
1.161 djm 108: #define COPY_BUFLEN 16384
109:
1.193 millert 110: int do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout);
111: int do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout);
1.11 aaron 112:
1.70 mouring 113: /* Struct for addargs */
114: arglist args;
1.168 djm 115: arglist remote_remote_args;
1.41 markus 116:
1.99 markus 117: /* Bandwidth limit */
1.167 djm 118: long long limit_kbps = 0;
119: struct bwlimit bwlimit;
1.99 markus 120:
1.11 aaron 121: /* Name of current file being transferred. */
122: char *curfile;
1.4 aaron 123:
1.1 deraadt 124: /* This is set to non-zero to enable verbose mode. */
1.17 markus 125: int verbose_mode = 0;
1.1 deraadt 126:
1.6 aaron 127: /* This is set to zero if the progressmeter is not desired. */
128: int showprogress = 1;
129:
1.169 markus 130: /*
131: * This is set to non-zero if remote-remote copy should be piped
132: * through this process.
133: */
134: int throughlocal = 0;
135:
1.193 millert 136: /* Non-standard port to use for the ssh connection or -1. */
137: int sshport = -1;
138:
1.34 deraadt 139: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 140: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 141:
1.92 markus 142: /* This is used to store the pid of ssh_program */
1.105 djm 143: pid_t do_cmd_pid = -1;
144:
145: static void
146: killchild(int signo)
147: {
1.119 dtucker 148: if (do_cmd_pid > 1) {
1.123 avsm 149: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 150: waitpid(do_cmd_pid, NULL, 0);
151: }
1.105 djm 152:
1.123 avsm 153: if (signo)
154: _exit(1);
155: exit(1);
1.105 djm 156: }
1.92 markus 157:
1.166 millert 158: static void
159: suspchild(int signo)
160: {
161: int status;
162:
163: if (do_cmd_pid > 1) {
164: kill(do_cmd_pid, signo);
165: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
166: errno == EINTR)
167: ;
168: kill(getpid(), SIGSTOP);
169: }
170: }
171:
1.129 djm 172: static int
173: do_local_cmd(arglist *a)
174: {
175: u_int i;
176: int status;
177: pid_t pid;
178:
179: if (a->num == 0)
180: fatal("do_local_cmd: no arguments");
181:
182: if (verbose_mode) {
183: fprintf(stderr, "Executing:");
184: for (i = 0; i < a->num; i++)
1.186 schwarze 185: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 186: fprintf(stderr, "\n");
187: }
188: if ((pid = fork()) == -1)
189: fatal("do_local_cmd: fork: %s", strerror(errno));
190:
191: if (pid == 0) {
192: execvp(a->list[0], a->list);
193: perror(a->list[0]);
194: exit(1);
195: }
196:
197: do_cmd_pid = pid;
198: signal(SIGTERM, killchild);
199: signal(SIGINT, killchild);
200: signal(SIGHUP, killchild);
201:
202: while (waitpid(pid, &status, 0) == -1)
203: if (errno != EINTR)
204: fatal("do_local_cmd: waitpid: %s", strerror(errno));
205:
206: do_cmd_pid = -1;
207:
208: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
209: return (-1);
210:
211: return (0);
212: }
213:
1.20 markus 214: /*
215: * This function executes the given command as the specified user on the
216: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
217: * assigns the input and output file descriptors on success.
218: */
1.1 deraadt 219:
1.27 markus 220: int
1.193 millert 221: do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout)
1.1 deraadt 222: {
1.18 markus 223: int pin[2], pout[2], reserved[2];
224:
225: if (verbose_mode)
1.186 schwarze 226: fmprintf(stderr,
1.78 deraadt 227: "Executing: program %s host %s, user %s, command %s\n",
228: ssh_program, host,
229: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 230:
1.193 millert 231: if (port == -1)
232: port = sshport;
233:
1.20 markus 234: /*
235: * Reserve two descriptors so that the real pipes won't get
236: * descriptors 0 and 1 because that will screw up dup2 below.
237: */
1.142 markus 238: if (pipe(reserved) < 0)
239: fatal("pipe: %s", strerror(errno));
1.18 markus 240:
241: /* Create a socket pair for communicating with ssh. */
242: if (pipe(pin) < 0)
243: fatal("pipe: %s", strerror(errno));
244: if (pipe(pout) < 0)
245: fatal("pipe: %s", strerror(errno));
246:
247: /* Free the reserved descriptors. */
248: close(reserved[0]);
249: close(reserved[1]);
1.166 millert 250:
251: signal(SIGTSTP, suspchild);
252: signal(SIGTTIN, suspchild);
253: signal(SIGTTOU, suspchild);
1.18 markus 254:
1.106 nino 255: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 256: do_cmd_pid = fork();
257: if (do_cmd_pid == 0) {
1.18 markus 258: /* Child. */
259: close(pin[1]);
260: close(pout[0]);
261: dup2(pin[0], 0);
262: dup2(pout[1], 1);
263: close(pin[0]);
264: close(pout[1]);
265:
1.129 djm 266: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 267: if (port != -1) {
268: addargs(&args, "-p");
269: addargs(&args, "%d", port);
270: }
1.165 guenther 271: if (remuser != NULL) {
272: addargs(&args, "-l");
273: addargs(&args, "%s", remuser);
274: }
275: addargs(&args, "--");
1.70 mouring 276: addargs(&args, "%s", host);
277: addargs(&args, "%s", cmd);
1.18 markus 278:
1.41 markus 279: execvp(ssh_program, args.list);
1.34 deraadt 280: perror(ssh_program);
1.18 markus 281: exit(1);
1.92 markus 282: } else if (do_cmd_pid == -1) {
283: fatal("fork: %s", strerror(errno));
1.18 markus 284: }
285: /* Parent. Close the other side, and return the local side. */
286: close(pin[0]);
287: *fdout = pin[1];
288: close(pout[1]);
289: *fdin = pout[0];
1.105 djm 290: signal(SIGTERM, killchild);
291: signal(SIGINT, killchild);
292: signal(SIGHUP, killchild);
1.18 markus 293: return 0;
1.1 deraadt 294: }
295:
1.169 markus 296: /*
1.196 djm 297: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 298: * input and output descriptors to be setup by a previous call to do_cmd().
299: * This way the input and output of two commands can be connected.
300: */
301: int
1.193 millert 302: do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
1.169 markus 303: {
304: pid_t pid;
305: int status;
306:
307: if (verbose_mode)
1.186 schwarze 308: fmprintf(stderr,
1.169 markus 309: "Executing: 2nd program %s host %s, user %s, command %s\n",
310: ssh_program, host,
311: remuser ? remuser : "(unspecified)", cmd);
312:
1.193 millert 313: if (port == -1)
314: port = sshport;
315:
1.169 markus 316: /* Fork a child to execute the command on the remote host using ssh. */
317: pid = fork();
318: if (pid == 0) {
319: dup2(fdin, 0);
320: dup2(fdout, 1);
321:
322: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 323: if (port != -1) {
324: addargs(&args, "-p");
325: addargs(&args, "%d", port);
326: }
1.169 markus 327: if (remuser != NULL) {
328: addargs(&args, "-l");
329: addargs(&args, "%s", remuser);
330: }
331: addargs(&args, "--");
332: addargs(&args, "%s", host);
333: addargs(&args, "%s", cmd);
334:
335: execvp(ssh_program, args.list);
336: perror(ssh_program);
337: exit(1);
338: } else if (pid == -1) {
339: fatal("fork: %s", strerror(errno));
340: }
341: while (waitpid(pid, &status, 0) == -1)
342: if (errno != EINTR)
343: fatal("do_cmd2: waitpid: %s", strerror(errno));
344: return 0;
345: }
346:
1.1 deraadt 347: typedef struct {
1.124 djm 348: size_t cnt;
1.1 deraadt 349: char *buf;
350: } BUF;
351:
1.18 markus 352: BUF *allocbuf(BUF *, int, int);
353: void lostconn(int);
354: int okname(char *);
355: void run_err(const char *,...);
356: void verifydir(char *);
1.1 deraadt 357:
358: struct passwd *pwd;
1.18 markus 359: uid_t userid;
1.1 deraadt 360: int errs, remin, remout;
1.202 ! djm 361: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 362:
363: #define CMDNEEDS 64
364: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
365:
1.18 markus 366: int response(void);
367: void rsource(char *, struct stat *);
1.202 ! djm 368: void sink(int, char *[], const char *);
1.18 markus 369: void source(int, char *[]);
370: void tolocal(int, char *[]);
1.193 millert 371: void toremote(int, char *[]);
1.18 markus 372: void usage(void);
1.1 deraadt 373:
374: int
1.104 djm 375: main(int argc, char **argv)
1.1 deraadt 376: {
1.145 djm 377: int ch, fflag, tflag, status, n;
1.193 millert 378: char **newargv;
1.167 djm 379: const char *errstr;
1.1 deraadt 380: extern char *optarg;
381: extern int optind;
1.126 djm 382:
383: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
384: sanitise_stdfd();
1.145 djm 385:
1.186 schwarze 386: setlocale(LC_CTYPE, "");
387:
1.145 djm 388: /* Copy argv, because we modify it */
1.187 deraadt 389: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 390: for (n = 0; n < argc; n++)
391: newargv[n] = xstrdup(argv[n]);
392: argv = newargv;
1.1 deraadt 393:
1.129 djm 394: memset(&args, '\0', sizeof(args));
1.168 djm 395: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
396: args.list = remote_remote_args.list = NULL;
1.129 djm 397: addargs(&args, "%s", ssh_program);
1.70 mouring 398: addargs(&args, "-x");
1.168 djm 399: addargs(&args, "-oForwardAgent=no");
400: addargs(&args, "-oPermitLocalCommand=no");
401: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 402: addargs(&args, "-oRemoteCommand=none");
403: addargs(&args, "-oRequestTTY=no");
1.41 markus 404:
1.202 ! djm 405: fflag = Tflag = tflag = 0;
! 406: while ((ch = getopt(argc, argv,
! 407: "dfl:prtTvBCc:i:P:q12346S:o:F:J:")) != -1) {
1.18 markus 408: switch (ch) {
409: /* User-visible flags. */
1.100 markus 410: case '1':
1.190 djm 411: fatal("SSH protocol v.1 is no longer supported");
412: break;
1.100 markus 413: case '2':
1.190 djm 414: /* Ignored */
415: break;
1.23 markus 416: case '4':
1.41 markus 417: case '6':
418: case 'C':
1.70 mouring 419: addargs(&args, "-%c", ch);
1.168 djm 420: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 421: break;
1.169 markus 422: case '3':
423: throughlocal = 1;
424: break;
1.41 markus 425: case 'o':
426: case 'c':
427: case 'i':
1.83 stevesk 428: case 'F':
1.199 tb 429: case 'J':
1.168 djm 430: addargs(&remote_remote_args, "-%c", ch);
431: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 432: addargs(&args, "-%c", ch);
433: addargs(&args, "%s", optarg);
1.23 markus 434: break;
1.41 markus 435: case 'P':
1.193 millert 436: sshport = a2port(optarg);
437: if (sshport <= 0)
438: fatal("bad port \"%s\"\n", optarg);
1.41 markus 439: break;
440: case 'B':
1.168 djm 441: addargs(&remote_remote_args, "-oBatchmode=yes");
442: addargs(&args, "-oBatchmode=yes");
1.23 markus 443: break;
1.99 markus 444: case 'l':
1.167 djm 445: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
446: &errstr);
447: if (errstr != NULL)
1.99 markus 448: usage();
1.167 djm 449: limit_kbps *= 1024; /* kbps */
450: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 451: break;
1.1 deraadt 452: case 'p':
453: pflag = 1;
454: break;
455: case 'r':
456: iamrecursive = 1;
457: break;
1.34 deraadt 458: case 'S':
1.41 markus 459: ssh_program = xstrdup(optarg);
460: break;
461: case 'v':
1.72 markus 462: addargs(&args, "-v");
1.168 djm 463: addargs(&remote_remote_args, "-v");
1.41 markus 464: verbose_mode = 1;
465: break;
466: case 'q':
1.111 dtucker 467: addargs(&args, "-q");
1.168 djm 468: addargs(&remote_remote_args, "-q");
1.41 markus 469: showprogress = 0;
1.34 deraadt 470: break;
471:
1.18 markus 472: /* Server options. */
1.1 deraadt 473: case 'd':
474: targetshouldbedirectory = 1;
475: break;
1.18 markus 476: case 'f': /* "from" */
1.1 deraadt 477: iamremote = 1;
478: fflag = 1;
479: break;
1.18 markus 480: case 't': /* "to" */
1.1 deraadt 481: iamremote = 1;
482: tflag = 1;
483: break;
1.202 ! djm 484: case 'T':
! 485: Tflag = 1;
! 486: break;
1.1 deraadt 487: default:
488: usage();
489: }
1.202 ! djm 490: }
1.1 deraadt 491: argc -= optind;
492: argv += optind;
493:
494: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 495: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 496:
1.156 djm 497: if (!isatty(STDOUT_FILENO))
1.7 deraadt 498: showprogress = 0;
1.184 deraadt 499:
500: if (pflag) {
501: /* Cannot pledge: -p allows setuid/setgid files... */
502: } else {
503: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
504: NULL) == -1) {
505: perror("pledge");
506: exit(1);
507: }
508: }
1.7 deraadt 509:
1.1 deraadt 510: remin = STDIN_FILENO;
511: remout = STDOUT_FILENO;
512:
1.52 stevesk 513: if (fflag) {
1.18 markus 514: /* Follow "protocol", send data. */
515: (void) response();
1.1 deraadt 516: source(argc, argv);
517: exit(errs != 0);
518: }
1.18 markus 519: if (tflag) {
520: /* Receive data. */
1.202 ! djm 521: sink(argc, argv, NULL);
1.1 deraadt 522: exit(errs != 0);
523: }
524: if (argc < 2)
525: usage();
526: if (argc > 2)
527: targetshouldbedirectory = 1;
528:
529: remin = remout = -1;
1.92 markus 530: do_cmd_pid = -1;
1.1 deraadt 531: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 532: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
533: verbose_mode ? " -v" : "",
1.35 deraadt 534: iamrecursive ? " -r" : "", pflag ? " -p" : "",
535: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 536:
1.18 markus 537: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 538:
1.193 millert 539: if (colon(argv[argc - 1])) /* Dest is remote host. */
540: toremote(argc, argv);
1.1 deraadt 541: else {
542: if (targetshouldbedirectory)
543: verifydir(argv[argc - 1]);
1.130 djm 544: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 545: }
546: /*
547: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 548: * and no error has occurred yet
1.92 markus 549: */
550: if (do_cmd_pid != -1 && errs == 0) {
551: if (remin != -1)
552: (void) close(remin);
553: if (remout != -1)
554: (void) close(remout);
555: if (waitpid(do_cmd_pid, &status, 0) == -1)
556: errs = 1;
557: else {
558: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
559: errs = 1;
560: }
1.1 deraadt 561: }
562: exit(errs != 0);
563: }
564:
1.167 djm 565: /* Callback from atomicio6 to update progress meter and limit bandwidth */
566: static int
567: scpio(void *_cnt, size_t s)
1.161 djm 568: {
1.167 djm 569: off_t *cnt = (off_t *)_cnt;
570:
571: *cnt += s;
1.201 dtucker 572: refresh_progress_meter(0);
1.167 djm 573: if (limit_kbps > 0)
574: bandwidth_limit(&bwlimit, s);
575: return 0;
1.161 djm 576: }
577:
1.176 guenther 578: static int
579: do_times(int fd, int verb, const struct stat *sb)
580: {
581: /* strlen(2^64) == 20; strlen(10^6) == 7 */
582: char buf[(20 + 7 + 2) * 2 + 2];
583:
584: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
585: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
586: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
587: if (verb) {
588: fprintf(stderr, "File mtime %lld atime %lld\n",
589: (long long)sb->st_mtime, (long long)sb->st_atime);
590: fprintf(stderr, "Sending file timestamps: %s", buf);
591: }
592: (void) atomicio(vwrite, fd, buf, strlen(buf));
593: return (response());
594: }
595:
1.194 millert 596: static int
597: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
598: char **pathp)
599: {
600: int r;
601:
602: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
603: if (r == 0 && *pathp == NULL)
604: *pathp = xstrdup(".");
605: return r;
606: }
607:
1.1 deraadt 608: void
1.193 millert 609: toremote(int argc, char **argv)
1.1 deraadt 610: {
1.193 millert 611: char *suser = NULL, *host = NULL, *src = NULL;
612: char *bp, *tuser, *thost, *targ;
613: int sport = -1, tport = -1;
1.129 djm 614: arglist alist;
1.193 millert 615: int i, r;
1.168 djm 616: u_int j;
1.129 djm 617:
618: memset(&alist, '\0', sizeof(alist));
619: alist.list = NULL;
1.1 deraadt 620:
1.193 millert 621: /* Parse target */
1.194 millert 622: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
623: if (r == -1) {
624: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
625: ++errs;
626: goto out;
627: }
1.193 millert 628: if (r != 0) {
629: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 630: &targ) == -1) {
631: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
632: ++errs;
1.193 millert 633: goto out;
1.194 millert 634: }
1.129 djm 635: }
1.194 millert 636: if (tuser != NULL && !okname(tuser)) {
637: ++errs;
1.193 millert 638: goto out;
1.194 millert 639: }
1.129 djm 640:
1.193 millert 641: /* Parse source files */
1.1 deraadt 642: for (i = 0; i < argc - 1; i++) {
1.193 millert 643: free(suser);
644: free(host);
645: free(src);
1.194 millert 646: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
647: if (r == -1) {
648: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
649: ++errs;
650: continue;
651: }
652: if (r != 0) {
1.193 millert 653: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 654: }
1.193 millert 655: if (suser != NULL && !okname(suser)) {
656: ++errs;
657: continue;
658: }
659: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 660: xasprintf(&bp, "%s -f %s%s", cmd,
661: *src == '-' ? "-- " : "", src);
1.193 millert 662: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 663: exit(1);
1.173 djm 664: free(bp);
1.171 djm 665: xasprintf(&bp, "%s -t %s%s", cmd,
666: *targ == '-' ? "-- " : "", targ);
1.193 millert 667: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 668: exit(1);
1.173 djm 669: free(bp);
1.169 markus 670: (void) close(remin);
671: (void) close(remout);
672: remin = remout = -1;
1.193 millert 673: } else if (host) { /* standard remote to remote */
674: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
675: /* This would require the remote support URIs */
676: fatal("target port not supported with two "
677: "remote hosts without the -3 option");
678: }
679:
1.129 djm 680: freeargs(&alist);
681: addargs(&alist, "%s", ssh_program);
682: addargs(&alist, "-x");
1.168 djm 683: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 684: addargs(&alist, "-n");
1.168 djm 685: for (j = 0; j < remote_remote_args.num; j++) {
686: addargs(&alist, "%s",
687: remote_remote_args.list[j]);
688: }
1.193 millert 689:
690: if (sport != -1) {
691: addargs(&alist, "-p");
692: addargs(&alist, "%d", sport);
693: }
694: if (suser) {
1.129 djm 695: addargs(&alist, "-l");
696: addargs(&alist, "%s", suser);
1.23 markus 697: }
1.165 guenther 698: addargs(&alist, "--");
1.129 djm 699: addargs(&alist, "%s", host);
700: addargs(&alist, "%s", cmd);
701: addargs(&alist, "%s", src);
702: addargs(&alist, "%s%s%s:%s",
703: tuser ? tuser : "", tuser ? "@" : "",
704: thost, targ);
705: if (do_local_cmd(&alist) != 0)
1.109 markus 706: errs = 1;
1.18 markus 707: } else { /* local to remote */
1.1 deraadt 708: if (remin == -1) {
1.171 djm 709: xasprintf(&bp, "%s -t %s%s", cmd,
710: *targ == '-' ? "-- " : "", targ);
1.193 millert 711: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 712: &remout) < 0)
1.18 markus 713: exit(1);
1.1 deraadt 714: if (response() < 0)
715: exit(1);
1.173 djm 716: free(bp);
1.1 deraadt 717: }
1.18 markus 718: source(1, argv + i);
1.1 deraadt 719: }
720: }
1.193 millert 721: out:
722: free(tuser);
723: free(thost);
724: free(targ);
725: free(suser);
726: free(host);
727: free(src);
1.1 deraadt 728: }
729:
730: void
1.104 djm 731: tolocal(int argc, char **argv)
1.1 deraadt 732: {
1.193 millert 733: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 734: arglist alist;
1.193 millert 735: int i, r, sport = -1;
1.129 djm 736:
737: memset(&alist, '\0', sizeof(alist));
738: alist.list = NULL;
1.1 deraadt 739:
740: for (i = 0; i < argc - 1; i++) {
1.193 millert 741: free(suser);
742: free(host);
743: free(src);
1.194 millert 744: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 745: if (r == -1) {
1.194 millert 746: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 747: ++errs;
748: continue;
749: }
750: if (r != 0)
751: parse_user_host_path(argv[i], &suser, &host, &src);
752: if (suser != NULL && !okname(suser)) {
753: ++errs;
754: continue;
755: }
756: if (!host) { /* Local to local. */
1.129 djm 757: freeargs(&alist);
758: addargs(&alist, "%s", _PATH_CP);
759: if (iamrecursive)
760: addargs(&alist, "-r");
761: if (pflag)
762: addargs(&alist, "-p");
1.165 guenther 763: addargs(&alist, "--");
1.129 djm 764: addargs(&alist, "%s", argv[i]);
765: addargs(&alist, "%s", argv[argc-1]);
766: if (do_local_cmd(&alist))
1.1 deraadt 767: ++errs;
768: continue;
769: }
1.193 millert 770: /* Remote to local. */
1.171 djm 771: xasprintf(&bp, "%s -f %s%s",
772: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 773: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 774: free(bp);
1.18 markus 775: ++errs;
776: continue;
1.1 deraadt 777: }
1.173 djm 778: free(bp);
1.202 ! djm 779: sink(1, argv + argc - 1, src);
1.18 markus 780: (void) close(remin);
1.1 deraadt 781: remin = remout = -1;
782: }
1.193 millert 783: free(suser);
784: free(host);
785: free(src);
1.1 deraadt 786: }
787:
788: void
1.104 djm 789: source(int argc, char **argv)
1.1 deraadt 790: {
791: struct stat stb;
792: static BUF buffer;
793: BUF *bp;
1.163 dtucker 794: off_t i, statbytes;
1.180 djm 795: size_t amt, nr;
1.125 dtucker 796: int fd = -1, haderr, indx;
1.181 deraadt 797: char *last, *name, buf[2048], encname[PATH_MAX];
1.65 deraadt 798: int len;
1.1 deraadt 799:
800: for (indx = 0; indx < argc; ++indx) {
1.18 markus 801: name = argv[indx];
1.11 aaron 802: statbytes = 0;
1.65 deraadt 803: len = strlen(name);
804: while (len > 1 && name[len-1] == '/')
805: name[--len] = '\0';
1.158 dtucker 806: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
807: goto syserr;
1.85 markus 808: if (strchr(name, '\n') != NULL) {
1.158 dtucker 809: strnvis(encname, name, sizeof(encname), VIS_NL);
810: name = encname;
1.85 markus 811: }
1.1 deraadt 812: if (fstat(fd, &stb) < 0) {
813: syserr: run_err("%s: %s", name, strerror(errno));
814: goto next;
815: }
1.163 dtucker 816: if (stb.st_size < 0) {
817: run_err("%s: %s", name, "Negative file size");
818: goto next;
819: }
1.157 djm 820: unset_nonblock(fd);
1.1 deraadt 821: switch (stb.st_mode & S_IFMT) {
822: case S_IFREG:
823: break;
824: case S_IFDIR:
825: if (iamrecursive) {
826: rsource(name, &stb);
827: goto next;
828: }
829: /* FALLTHROUGH */
830: default:
831: run_err("%s: not a regular file", name);
832: goto next;
833: }
834: if ((last = strrchr(name, '/')) == NULL)
835: last = name;
836: else
837: ++last;
1.11 aaron 838: curfile = last;
1.1 deraadt 839: if (pflag) {
1.176 guenther 840: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 841: goto next;
842: }
843: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 844: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 845: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 846: (long long)stb.st_size, last);
1.186 schwarze 847: if (verbose_mode)
848: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 849: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 850: if (response() < 0)
851: goto next;
1.161 djm 852: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 853: next: if (fd != -1) {
854: (void) close(fd);
855: fd = -1;
856: }
1.1 deraadt 857: continue;
858: }
1.97 fgsch 859: if (showprogress)
860: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 861: set_nonblock(remout);
1.1 deraadt 862: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
863: amt = bp->cnt;
1.163 dtucker 864: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 865: amt = stb.st_size - i;
866: if (!haderr) {
1.180 djm 867: if ((nr = atomicio(read, fd,
868: bp->buf, amt)) != amt) {
1.122 avsm 869: haderr = errno;
1.180 djm 870: memset(bp->buf + nr, 0, amt - nr);
871: }
1.1 deraadt 872: }
1.161 djm 873: /* Keep writing after error to retain sync */
874: if (haderr) {
875: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 876: memset(bp->buf, 0, amt);
1.161 djm 877: continue;
1.1 deraadt 878: }
1.167 djm 879: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 880: &statbytes) != amt)
881: haderr = errno;
1.1 deraadt 882: }
1.161 djm 883: unset_nonblock(remout);
1.4 aaron 884:
1.127 deraadt 885: if (fd != -1) {
886: if (close(fd) < 0 && !haderr)
887: haderr = errno;
888: fd = -1;
889: }
1.1 deraadt 890: if (!haderr)
1.107 deraadt 891: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 892: else
893: run_err("%s: %s", name, strerror(haderr));
1.18 markus 894: (void) response();
1.185 dtucker 895: if (showprogress)
896: stop_progress_meter();
1.1 deraadt 897: }
898: }
899:
900: void
1.104 djm 901: rsource(char *name, struct stat *statp)
1.1 deraadt 902: {
903: DIR *dirp;
904: struct dirent *dp;
1.181 deraadt 905: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 906:
907: if (!(dirp = opendir(name))) {
908: run_err("%s: %s", name, strerror(errno));
909: return;
910: }
911: last = strrchr(name, '/');
1.183 mmcc 912: if (last == NULL)
1.1 deraadt 913: last = name;
914: else
915: last++;
916: if (pflag) {
1.176 guenther 917: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 918: closedir(dirp);
919: return;
920: }
921: }
1.55 deraadt 922: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 923: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 924: if (verbose_mode)
1.186 schwarze 925: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 926: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 927: if (response() < 0) {
928: closedir(dirp);
929: return;
930: }
1.63 stevesk 931: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 932: if (dp->d_ino == 0)
933: continue;
934: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
935: continue;
936: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
937: run_err("%s/%s: name too long", name, dp->d_name);
938: continue;
939: }
1.55 deraadt 940: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 941: vect[0] = path;
942: source(1, vect);
943: }
1.18 markus 944: (void) closedir(dirp);
1.107 deraadt 945: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 946: (void) response();
1.1 deraadt 947: }
948:
1.189 millert 949: #define TYPE_OVERFLOW(type, val) \
950: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
951: (sizeof(type) == 8 && (val) > INT64_MAX) || \
952: (sizeof(type) != 4 && sizeof(type) != 8))
953:
1.1 deraadt 954: void
1.202 ! djm 955: sink(int argc, char **argv, const char *src)
1.1 deraadt 956: {
957: static BUF buffer;
958: struct stat stb;
1.18 markus 959: enum {
960: YES, NO, DISPLAYED
961: } wrerr;
1.1 deraadt 962: BUF *bp;
1.122 avsm 963: off_t i;
1.124 djm 964: size_t j, count;
1.140 deraadt 965: int amt, exists, first, ofd;
966: mode_t mode, omode, mask;
1.97 fgsch 967: off_t size, statbytes;
1.176 guenther 968: unsigned long long ull;
1.36 deraadt 969: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 970: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.202 ! djm 971: char *src_copy = NULL, *restrict_pattern = NULL;
1.40 markus 972: struct timeval tv[2];
1.1 deraadt 973:
1.66 stevesk 974: #define atime tv[0]
975: #define mtime tv[1]
1.118 deraadt 976: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 977:
1.189 millert 978: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
979: SCREWUP("Unexpected off_t/time_t size");
980:
1.1 deraadt 981: setimes = targisdir = 0;
982: mask = umask(0);
983: if (!pflag)
1.18 markus 984: (void) umask(mask);
1.1 deraadt 985: if (argc != 1) {
986: run_err("ambiguous target");
987: exit(1);
988: }
989: targ = *argv;
990: if (targetshouldbedirectory)
991: verifydir(targ);
1.18 markus 992:
1.107 deraadt 993: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 994: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
995: targisdir = 1;
1.202 ! djm 996: if (src != NULL && !iamrecursive && !Tflag) {
! 997: /*
! 998: * Prepare to try to restrict incoming filenames to match
! 999: * the requested destination file glob.
! 1000: */
! 1001: if ((src_copy = strdup(src)) == NULL)
! 1002: fatal("strdup failed");
! 1003: if ((restrict_pattern = strrchr(src_copy, '/')) != NULL) {
! 1004: *restrict_pattern++ = '\0';
! 1005: }
! 1006: }
1.1 deraadt 1007: for (first = 1;; first = 0) {
1008: cp = buf;
1.122 avsm 1009: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 1010: return;
1011: if (*cp++ == '\n')
1012: SCREWUP("unexpected <newline>");
1013: do {
1.30 deraadt 1014: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1015: SCREWUP("lost connection");
1016: *cp++ = ch;
1017: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1018: *cp = 0;
1.114 markus 1019: if (verbose_mode)
1.186 schwarze 1020: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1021:
1022: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1023: if (iamremote == 0) {
1024: (void) snmprintf(visbuf, sizeof(visbuf),
1025: NULL, "%s", buf + 1);
1.107 deraadt 1026: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1027: visbuf, strlen(visbuf));
1028: }
1.1 deraadt 1029: if (buf[0] == '\02')
1030: exit(1);
1031: ++errs;
1032: continue;
1033: }
1034: if (buf[0] == 'E') {
1.107 deraadt 1035: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1036: return;
1037: }
1038: if (ch == '\n')
1039: *--cp = 0;
1040:
1041: cp = buf;
1042: if (*cp == 'T') {
1043: setimes++;
1044: cp++;
1.176 guenther 1045: if (!isdigit((unsigned char)*cp))
1046: SCREWUP("mtime.sec not present");
1047: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1048: if (!cp || *cp++ != ' ')
1.1 deraadt 1049: SCREWUP("mtime.sec not delimited");
1.189 millert 1050: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1051: setimes = 0; /* out of range */
1052: mtime.tv_sec = ull;
1.66 stevesk 1053: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1054: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1055: mtime.tv_usec > 999999)
1.1 deraadt 1056: SCREWUP("mtime.usec not delimited");
1.176 guenther 1057: if (!isdigit((unsigned char)*cp))
1058: SCREWUP("atime.sec not present");
1059: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1060: if (!cp || *cp++ != ' ')
1.1 deraadt 1061: SCREWUP("atime.sec not delimited");
1.189 millert 1062: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1063: setimes = 0; /* out of range */
1064: atime.tv_sec = ull;
1.66 stevesk 1065: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1066: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1067: atime.tv_usec > 999999)
1.1 deraadt 1068: SCREWUP("atime.usec not delimited");
1.107 deraadt 1069: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1070: continue;
1071: }
1072: if (*cp != 'C' && *cp != 'D') {
1073: /*
1074: * Check for the case "rcp remote:foo\* local:bar".
1075: * In this case, the line "No match." can be returned
1076: * by the shell before the rcp command on the remote is
1077: * executed so the ^Aerror_message convention isn't
1078: * followed.
1079: */
1080: if (first) {
1081: run_err("%s", cp);
1082: exit(1);
1083: }
1084: SCREWUP("expected control record");
1085: }
1086: mode = 0;
1087: for (++cp; cp < buf + 5; cp++) {
1088: if (*cp < '0' || *cp > '7')
1089: SCREWUP("bad mode");
1090: mode = (mode << 3) | (*cp - '0');
1091: }
1.197 dtucker 1092: if (!pflag)
1093: mode &= ~mask;
1.1 deraadt 1094: if (*cp++ != ' ')
1095: SCREWUP("mode not delimited");
1096:
1.188 millert 1097: if (!isdigit((unsigned char)*cp))
1098: SCREWUP("size not present");
1099: ull = strtoull(cp, &cp, 10);
1100: if (!cp || *cp++ != ' ')
1.1 deraadt 1101: SCREWUP("size not delimited");
1.189 millert 1102: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1103: SCREWUP("size out of range");
1104: size = (off_t)ull;
1105:
1.198 djm 1106: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1107: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1108: run_err("error: unexpected filename: %s", cp);
1109: exit(1);
1110: }
1.202 ! djm 1111: if (restrict_pattern != NULL &&
! 1112: fnmatch(restrict_pattern, cp, 0) != 0)
! 1113: SCREWUP("filename does not match request");
1.1 deraadt 1114: if (targisdir) {
1115: static char *namebuf;
1.124 djm 1116: static size_t cursize;
1.1 deraadt 1117: size_t need;
1118:
1119: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1120: if (need > cursize) {
1.173 djm 1121: free(namebuf);
1.18 markus 1122: namebuf = xmalloc(need);
1.55 deraadt 1123: cursize = need;
1124: }
1125: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1126: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1127: np = namebuf;
1128: } else
1129: np = targ;
1.12 aaron 1130: curfile = cp;
1.1 deraadt 1131: exists = stat(np, &stb) == 0;
1132: if (buf[0] == 'D') {
1133: int mod_flag = pflag;
1.114 markus 1134: if (!iamrecursive)
1135: SCREWUP("received directory without -r");
1.1 deraadt 1136: if (exists) {
1137: if (!S_ISDIR(stb.st_mode)) {
1138: errno = ENOTDIR;
1139: goto bad;
1140: }
1141: if (pflag)
1.18 markus 1142: (void) chmod(np, mode);
1.1 deraadt 1143: } else {
1.18 markus 1144: /* Handle copying from a read-only
1145: directory */
1.1 deraadt 1146: mod_flag = 1;
1147: if (mkdir(np, mode | S_IRWXU) < 0)
1148: goto bad;
1149: }
1.58 danh 1150: vect[0] = xstrdup(np);
1.202 ! djm 1151: sink(1, vect, src);
1.1 deraadt 1152: if (setimes) {
1153: setimes = 0;
1.59 deraadt 1154: if (utimes(vect[0], tv) < 0)
1.18 markus 1155: run_err("%s: set times: %s",
1.59 deraadt 1156: vect[0], strerror(errno));
1.1 deraadt 1157: }
1158: if (mod_flag)
1.59 deraadt 1159: (void) chmod(vect[0], mode);
1.173 djm 1160: free(vect[0]);
1.1 deraadt 1161: continue;
1162: }
1163: omode = mode;
1.174 dtucker 1164: mode |= S_IWUSR;
1.71 markus 1165: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1166: bad: run_err("%s: %s", np, strerror(errno));
1167: continue;
1168: }
1.107 deraadt 1169: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1170: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1171: (void) close(ofd);
1.1 deraadt 1172: continue;
1173: }
1174: cp = bp->buf;
1175: wrerr = NO;
1.7 deraadt 1176:
1.12 aaron 1177: statbytes = 0;
1.97 fgsch 1178: if (showprogress)
1179: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1180: set_nonblock(remin);
1181: for (count = i = 0; i < size; i += bp->cnt) {
1182: amt = bp->cnt;
1.1 deraadt 1183: if (i + amt > size)
1184: amt = size - i;
1185: count += amt;
1186: do {
1.167 djm 1187: j = atomicio6(read, remin, cp, amt,
1188: scpio, &statbytes);
1.122 avsm 1189: if (j == 0) {
1.161 djm 1190: run_err("%s", j != EPIPE ?
1191: strerror(errno) :
1.63 stevesk 1192: "dropped connection");
1.1 deraadt 1193: exit(1);
1194: }
1195: amt -= j;
1196: cp += j;
1197: } while (amt > 0);
1.112 djm 1198:
1.1 deraadt 1199: if (count == bp->cnt) {
1200: /* Keep reading so we stay sync'd up. */
1201: if (wrerr == NO) {
1.122 avsm 1202: if (atomicio(vwrite, ofd, bp->buf,
1203: count) != count) {
1.1 deraadt 1204: wrerr = YES;
1.122 avsm 1205: wrerrno = errno;
1.1 deraadt 1206: }
1207: }
1208: count = 0;
1209: cp = bp->buf;
1210: }
1211: }
1.161 djm 1212: unset_nonblock(remin);
1.1 deraadt 1213: if (count != 0 && wrerr == NO &&
1.122 avsm 1214: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1215: wrerr = YES;
1.122 avsm 1216: wrerrno = errno;
1.1 deraadt 1217: }
1.159 djm 1218: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1219: ftruncate(ofd, size) != 0) {
1.1 deraadt 1220: run_err("%s: truncate: %s", np, strerror(errno));
1221: wrerr = DISPLAYED;
1222: }
1223: if (pflag) {
1224: if (exists || omode != mode)
1.116 dtucker 1225: if (fchmod(ofd, omode)) {
1.1 deraadt 1226: run_err("%s: set mode: %s",
1.63 stevesk 1227: np, strerror(errno));
1.116 dtucker 1228: wrerr = DISPLAYED;
1229: }
1.1 deraadt 1230: } else {
1231: if (!exists && omode != mode)
1.116 dtucker 1232: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1233: run_err("%s: set mode: %s",
1.63 stevesk 1234: np, strerror(errno));
1.116 dtucker 1235: wrerr = DISPLAYED;
1236: }
1.1 deraadt 1237: }
1.33 provos 1238: if (close(ofd) == -1) {
1239: wrerr = YES;
1240: wrerrno = errno;
1241: }
1.18 markus 1242: (void) response();
1.185 dtucker 1243: if (showprogress)
1244: stop_progress_meter();
1.1 deraadt 1245: if (setimes && wrerr == NO) {
1246: setimes = 0;
1.40 markus 1247: if (utimes(np, tv) < 0) {
1.1 deraadt 1248: run_err("%s: set times: %s",
1.63 stevesk 1249: np, strerror(errno));
1.1 deraadt 1250: wrerr = DISPLAYED;
1251: }
1252: }
1.18 markus 1253: switch (wrerr) {
1.1 deraadt 1254: case YES:
1255: run_err("%s: %s", np, strerror(wrerrno));
1256: break;
1257: case NO:
1.107 deraadt 1258: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1259: break;
1260: case DISPLAYED:
1261: break;
1262: }
1263: }
1264: screwup:
1265: run_err("protocol error: %s", why);
1266: exit(1);
1267: }
1268:
1269: int
1.86 itojun 1270: response(void)
1.1 deraadt 1271: {
1.186 schwarze 1272: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1273:
1.30 deraadt 1274: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1275: lostconn(0);
1276:
1277: cp = rbuf;
1.18 markus 1278: switch (resp) {
1279: case 0: /* ok */
1.1 deraadt 1280: return (0);
1281: default:
1282: *cp++ = resp;
1283: /* FALLTHROUGH */
1.18 markus 1284: case 1: /* error, followed by error msg */
1285: case 2: /* fatal error, "" */
1.1 deraadt 1286: do {
1.30 deraadt 1287: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1288: lostconn(0);
1289: *cp++ = ch;
1290: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1291:
1.186 schwarze 1292: if (!iamremote) {
1293: cp[-1] = '\0';
1294: (void) snmprintf(visbuf, sizeof(visbuf),
1295: NULL, "%s\n", rbuf);
1296: (void) atomicio(vwrite, STDERR_FILENO,
1297: visbuf, strlen(visbuf));
1298: }
1.1 deraadt 1299: ++errs;
1300: if (resp == 1)
1301: return (-1);
1302: exit(1);
1303: }
1304: /* NOTREACHED */
1305: }
1306:
1307: void
1.86 itojun 1308: usage(void)
1.1 deraadt 1309: {
1.83 stevesk 1310: (void) fprintf(stderr,
1.191 jmc 1311: "usage: scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1312: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1313: " [-S program] source ... target\n");
1.1 deraadt 1314: exit(1);
1315: }
1316:
1317: void
1.18 markus 1318: run_err(const char *fmt,...)
1.1 deraadt 1319: {
1320: static FILE *fp;
1321: va_list ap;
1322:
1323: ++errs;
1.136 biorn 1324: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1325: (void) fprintf(fp, "%c", 0x01);
1326: (void) fprintf(fp, "scp: ");
1327: va_start(ap, fmt);
1328: (void) vfprintf(fp, fmt, ap);
1329: va_end(ap);
1330: (void) fprintf(fp, "\n");
1331: (void) fflush(fp);
1332: }
1.18 markus 1333:
1334: if (!iamremote) {
1.73 markus 1335: va_start(ap, fmt);
1.186 schwarze 1336: vfmprintf(stderr, fmt, ap);
1.73 markus 1337: va_end(ap);
1.18 markus 1338: fprintf(stderr, "\n");
1339: }
1.1 deraadt 1340: }
1341:
1342: void
1.104 djm 1343: verifydir(char *cp)
1.1 deraadt 1344: {
1345: struct stat stb;
1346:
1347: if (!stat(cp, &stb)) {
1348: if (S_ISDIR(stb.st_mode))
1349: return;
1350: errno = ENOTDIR;
1351: }
1352: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1353: killchild(0);
1.1 deraadt 1354: }
1355:
1356: int
1.104 djm 1357: okname(char *cp0)
1.1 deraadt 1358: {
1359: int c;
1360: char *cp;
1361:
1362: cp = cp0;
1363: do {
1.75 deraadt 1364: c = (int)*cp;
1.1 deraadt 1365: if (c & 0200)
1366: goto bad;
1.179 deraadt 1367: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1368: switch (c) {
1369: case '\'':
1370: case '"':
1371: case '`':
1372: case ' ':
1373: case '#':
1374: goto bad;
1375: default:
1376: break;
1377: }
1378: }
1.1 deraadt 1379: } while (*++cp);
1380: return (1);
1381:
1.186 schwarze 1382: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1383: return (0);
1384: }
1385:
1386: BUF *
1.104 djm 1387: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1388: {
1389: size_t size;
1390: struct stat stb;
1391:
1392: if (fstat(fd, &stb) < 0) {
1393: run_err("fstat: %s", strerror(errno));
1394: return (0);
1395: }
1.187 deraadt 1396: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1397: if (size == 0)
1.18 markus 1398: size = blksize;
1.1 deraadt 1399: if (bp->cnt >= size)
1400: return (bp);
1.192 deraadt 1401: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1402: bp->cnt = size;
1403: return (bp);
1404: }
1405:
1406: void
1.104 djm 1407: lostconn(int signo)
1.1 deraadt 1408: {
1409: if (!iamremote)
1.172 dtucker 1410: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1411: if (signo)
1412: _exit(1);
1413: else
1414: exit(1);
1.4 aaron 1415: }
![[BACK]](/icons/back.gif){kind=icon}
Return to scp.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh