Annotation of src/usr.bin/ssh/scp.c, Revision 1.187
1.187 ! deraadt 1: /* $OpenBSD: scp.c,v 1.186 2016/05/25 23:48:45 schwarze 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>
1.154 stevesk 89: #include <stdio.h>
1.153 stevesk 90: #include <stdlib.h>
1.150 stevesk 91: #include <string.h>
1.149 stevesk 92: #include <time.h>
1.148 stevesk 93: #include <unistd.h>
1.181 deraadt 94: #include <limits.h>
1.158 dtucker 95: #include <vis.h>
1.1 deraadt 96:
97: #include "xmalloc.h"
1.51 markus 98: #include "atomicio.h"
1.50 markus 99: #include "pathnames.h"
1.51 markus 100: #include "log.h"
1.69 mouring 101: #include "misc.h"
1.97 fgsch 102: #include "progressmeter.h"
1.186 schwarze 103: #include "utf8.h"
1.1 deraadt 104:
1.161 djm 105: #define COPY_BUFLEN 16384
106:
1.140 deraadt 107: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
1.169 markus 108: int do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout);
1.11 aaron 109:
1.70 mouring 110: /* Struct for addargs */
111: arglist args;
1.168 djm 112: arglist remote_remote_args;
1.41 markus 113:
1.99 markus 114: /* Bandwidth limit */
1.167 djm 115: long long limit_kbps = 0;
116: struct bwlimit bwlimit;
1.99 markus 117:
1.11 aaron 118: /* Name of current file being transferred. */
119: char *curfile;
1.4 aaron 120:
1.1 deraadt 121: /* This is set to non-zero to enable verbose mode. */
1.17 markus 122: int verbose_mode = 0;
1.1 deraadt 123:
1.6 aaron 124: /* This is set to zero if the progressmeter is not desired. */
125: int showprogress = 1;
126:
1.169 markus 127: /*
128: * This is set to non-zero if remote-remote copy should be piped
129: * through this process.
130: */
131: int throughlocal = 0;
132:
1.34 deraadt 133: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 134: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 135:
1.92 markus 136: /* This is used to store the pid of ssh_program */
1.105 djm 137: pid_t do_cmd_pid = -1;
138:
139: static void
140: killchild(int signo)
141: {
1.119 dtucker 142: if (do_cmd_pid > 1) {
1.123 avsm 143: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 144: waitpid(do_cmd_pid, NULL, 0);
145: }
1.105 djm 146:
1.123 avsm 147: if (signo)
148: _exit(1);
149: exit(1);
1.105 djm 150: }
1.92 markus 151:
1.166 millert 152: static void
153: suspchild(int signo)
154: {
155: int status;
156:
157: if (do_cmd_pid > 1) {
158: kill(do_cmd_pid, signo);
159: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
160: errno == EINTR)
161: ;
162: kill(getpid(), SIGSTOP);
163: }
164: }
165:
1.129 djm 166: static int
167: do_local_cmd(arglist *a)
168: {
169: u_int i;
170: int status;
171: pid_t pid;
172:
173: if (a->num == 0)
174: fatal("do_local_cmd: no arguments");
175:
176: if (verbose_mode) {
177: fprintf(stderr, "Executing:");
178: for (i = 0; i < a->num; i++)
1.186 schwarze 179: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 180: fprintf(stderr, "\n");
181: }
182: if ((pid = fork()) == -1)
183: fatal("do_local_cmd: fork: %s", strerror(errno));
184:
185: if (pid == 0) {
186: execvp(a->list[0], a->list);
187: perror(a->list[0]);
188: exit(1);
189: }
190:
191: do_cmd_pid = pid;
192: signal(SIGTERM, killchild);
193: signal(SIGINT, killchild);
194: signal(SIGHUP, killchild);
195:
196: while (waitpid(pid, &status, 0) == -1)
197: if (errno != EINTR)
198: fatal("do_local_cmd: waitpid: %s", strerror(errno));
199:
200: do_cmd_pid = -1;
201:
202: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
203: return (-1);
204:
205: return (0);
206: }
207:
1.20 markus 208: /*
209: * This function executes the given command as the specified user on the
210: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
211: * assigns the input and output file descriptors on success.
212: */
1.1 deraadt 213:
1.27 markus 214: int
1.140 deraadt 215: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 216: {
1.18 markus 217: int pin[2], pout[2], reserved[2];
218:
219: if (verbose_mode)
1.186 schwarze 220: fmprintf(stderr,
1.78 deraadt 221: "Executing: program %s host %s, user %s, command %s\n",
222: ssh_program, host,
223: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 224:
1.20 markus 225: /*
226: * Reserve two descriptors so that the real pipes won't get
227: * descriptors 0 and 1 because that will screw up dup2 below.
228: */
1.142 markus 229: if (pipe(reserved) < 0)
230: fatal("pipe: %s", strerror(errno));
1.18 markus 231:
232: /* Create a socket pair for communicating with ssh. */
233: if (pipe(pin) < 0)
234: fatal("pipe: %s", strerror(errno));
235: if (pipe(pout) < 0)
236: fatal("pipe: %s", strerror(errno));
237:
238: /* Free the reserved descriptors. */
239: close(reserved[0]);
240: close(reserved[1]);
1.166 millert 241:
242: signal(SIGTSTP, suspchild);
243: signal(SIGTTIN, suspchild);
244: signal(SIGTTOU, suspchild);
1.18 markus 245:
1.106 nino 246: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 247: do_cmd_pid = fork();
248: if (do_cmd_pid == 0) {
1.18 markus 249: /* Child. */
250: close(pin[1]);
251: close(pout[0]);
252: dup2(pin[0], 0);
253: dup2(pout[1], 1);
254: close(pin[0]);
255: close(pout[1]);
256:
1.129 djm 257: replacearg(&args, 0, "%s", ssh_program);
1.165 guenther 258: if (remuser != NULL) {
259: addargs(&args, "-l");
260: addargs(&args, "%s", remuser);
261: }
262: addargs(&args, "--");
1.70 mouring 263: addargs(&args, "%s", host);
264: addargs(&args, "%s", cmd);
1.18 markus 265:
1.41 markus 266: execvp(ssh_program, args.list);
1.34 deraadt 267: perror(ssh_program);
1.18 markus 268: exit(1);
1.92 markus 269: } else if (do_cmd_pid == -1) {
270: fatal("fork: %s", strerror(errno));
1.18 markus 271: }
272: /* Parent. Close the other side, and return the local side. */
273: close(pin[0]);
274: *fdout = pin[1];
275: close(pout[1]);
276: *fdin = pout[0];
1.105 djm 277: signal(SIGTERM, killchild);
278: signal(SIGINT, killchild);
279: signal(SIGHUP, killchild);
1.18 markus 280: return 0;
1.1 deraadt 281: }
282:
1.169 markus 283: /*
284: * This functions executes a command simlar to do_cmd(), but expects the
285: * input and output descriptors to be setup by a previous call to do_cmd().
286: * This way the input and output of two commands can be connected.
287: */
288: int
289: do_cmd2(char *host, char *remuser, char *cmd, int fdin, int fdout)
290: {
291: pid_t pid;
292: int status;
293:
294: if (verbose_mode)
1.186 schwarze 295: fmprintf(stderr,
1.169 markus 296: "Executing: 2nd program %s host %s, user %s, command %s\n",
297: ssh_program, host,
298: remuser ? remuser : "(unspecified)", cmd);
299:
300: /* Fork a child to execute the command on the remote host using ssh. */
301: pid = fork();
302: if (pid == 0) {
303: dup2(fdin, 0);
304: dup2(fdout, 1);
305:
306: replacearg(&args, 0, "%s", ssh_program);
307: if (remuser != NULL) {
308: addargs(&args, "-l");
309: addargs(&args, "%s", remuser);
310: }
311: addargs(&args, "--");
312: addargs(&args, "%s", host);
313: addargs(&args, "%s", cmd);
314:
315: execvp(ssh_program, args.list);
316: perror(ssh_program);
317: exit(1);
318: } else if (pid == -1) {
319: fatal("fork: %s", strerror(errno));
320: }
321: while (waitpid(pid, &status, 0) == -1)
322: if (errno != EINTR)
323: fatal("do_cmd2: waitpid: %s", strerror(errno));
324: return 0;
325: }
326:
1.1 deraadt 327: typedef struct {
1.124 djm 328: size_t cnt;
1.1 deraadt 329: char *buf;
330: } BUF;
331:
1.18 markus 332: BUF *allocbuf(BUF *, int, int);
333: void lostconn(int);
334: int okname(char *);
335: void run_err(const char *,...);
336: void verifydir(char *);
1.1 deraadt 337:
338: struct passwd *pwd;
1.18 markus 339: uid_t userid;
1.1 deraadt 340: int errs, remin, remout;
341: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
342:
343: #define CMDNEEDS 64
344: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
345:
1.18 markus 346: int response(void);
347: void rsource(char *, struct stat *);
348: void sink(int, char *[]);
349: void source(int, char *[]);
350: void tolocal(int, char *[]);
351: void toremote(char *, int, char *[]);
352: void usage(void);
1.1 deraadt 353:
354: int
1.104 djm 355: main(int argc, char **argv)
1.1 deraadt 356: {
1.145 djm 357: int ch, fflag, tflag, status, n;
1.167 djm 358: char *targ, **newargv;
359: const char *errstr;
1.1 deraadt 360: extern char *optarg;
361: extern int optind;
1.126 djm 362:
363: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
364: sanitise_stdfd();
1.145 djm 365:
1.186 schwarze 366: setlocale(LC_CTYPE, "");
367:
1.145 djm 368: /* Copy argv, because we modify it */
1.187 ! deraadt 369: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 370: for (n = 0; n < argc; n++)
371: newargv[n] = xstrdup(argv[n]);
372: argv = newargv;
1.1 deraadt 373:
1.129 djm 374: memset(&args, '\0', sizeof(args));
1.168 djm 375: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
376: args.list = remote_remote_args.list = NULL;
1.129 djm 377: addargs(&args, "%s", ssh_program);
1.70 mouring 378: addargs(&args, "-x");
1.168 djm 379: addargs(&args, "-oForwardAgent=no");
380: addargs(&args, "-oPermitLocalCommand=no");
381: addargs(&args, "-oClearAllForwardings=yes");
1.41 markus 382:
1.1 deraadt 383: fflag = tflag = 0;
1.169 markus 384: while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
1.18 markus 385: switch (ch) {
386: /* User-visible flags. */
1.100 markus 387: case '1':
388: case '2':
1.23 markus 389: case '4':
1.41 markus 390: case '6':
391: case 'C':
1.70 mouring 392: addargs(&args, "-%c", ch);
1.168 djm 393: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 394: break;
1.169 markus 395: case '3':
396: throughlocal = 1;
397: break;
1.41 markus 398: case 'o':
399: case 'c':
400: case 'i':
1.83 stevesk 401: case 'F':
1.168 djm 402: addargs(&remote_remote_args, "-%c", ch);
403: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 404: addargs(&args, "-%c", ch);
405: addargs(&args, "%s", optarg);
1.23 markus 406: break;
1.41 markus 407: case 'P':
1.168 djm 408: addargs(&remote_remote_args, "-p");
409: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 410: addargs(&args, "-p");
411: addargs(&args, "%s", optarg);
1.41 markus 412: break;
413: case 'B':
1.168 djm 414: addargs(&remote_remote_args, "-oBatchmode=yes");
415: addargs(&args, "-oBatchmode=yes");
1.23 markus 416: break;
1.99 markus 417: case 'l':
1.167 djm 418: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
419: &errstr);
420: if (errstr != NULL)
1.99 markus 421: usage();
1.167 djm 422: limit_kbps *= 1024; /* kbps */
423: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 424: break;
1.1 deraadt 425: case 'p':
426: pflag = 1;
427: break;
428: case 'r':
429: iamrecursive = 1;
430: break;
1.34 deraadt 431: case 'S':
1.41 markus 432: ssh_program = xstrdup(optarg);
433: break;
434: case 'v':
1.72 markus 435: addargs(&args, "-v");
1.168 djm 436: addargs(&remote_remote_args, "-v");
1.41 markus 437: verbose_mode = 1;
438: break;
439: case 'q':
1.111 dtucker 440: addargs(&args, "-q");
1.168 djm 441: addargs(&remote_remote_args, "-q");
1.41 markus 442: showprogress = 0;
1.34 deraadt 443: break;
444:
1.18 markus 445: /* Server options. */
1.1 deraadt 446: case 'd':
447: targetshouldbedirectory = 1;
448: break;
1.18 markus 449: case 'f': /* "from" */
1.1 deraadt 450: iamremote = 1;
451: fflag = 1;
452: break;
1.18 markus 453: case 't': /* "to" */
1.1 deraadt 454: iamremote = 1;
455: tflag = 1;
456: break;
457: default:
458: usage();
459: }
460: argc -= optind;
461: argv += optind;
462:
463: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 464: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 465:
1.156 djm 466: if (!isatty(STDOUT_FILENO))
1.7 deraadt 467: showprogress = 0;
1.184 deraadt 468:
469: if (pflag) {
470: /* Cannot pledge: -p allows setuid/setgid files... */
471: } else {
472: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
473: NULL) == -1) {
474: perror("pledge");
475: exit(1);
476: }
477: }
1.7 deraadt 478:
1.1 deraadt 479: remin = STDIN_FILENO;
480: remout = STDOUT_FILENO;
481:
1.52 stevesk 482: if (fflag) {
1.18 markus 483: /* Follow "protocol", send data. */
484: (void) response();
1.1 deraadt 485: source(argc, argv);
486: exit(errs != 0);
487: }
1.18 markus 488: if (tflag) {
489: /* Receive data. */
1.1 deraadt 490: sink(argc, argv);
491: exit(errs != 0);
492: }
493: if (argc < 2)
494: usage();
495: if (argc > 2)
496: targetshouldbedirectory = 1;
497:
498: remin = remout = -1;
1.92 markus 499: do_cmd_pid = -1;
1.1 deraadt 500: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 501: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
502: verbose_mode ? " -v" : "",
1.35 deraadt 503: iamrecursive ? " -r" : "", pflag ? " -p" : "",
504: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 505:
1.18 markus 506: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 507:
508: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
509: toremote(targ, argc, argv);
510: else {
511: if (targetshouldbedirectory)
512: verifydir(argv[argc - 1]);
1.130 djm 513: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 514: }
515: /*
516: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 517: * and no error has occurred yet
1.92 markus 518: */
519: if (do_cmd_pid != -1 && errs == 0) {
520: if (remin != -1)
521: (void) close(remin);
522: if (remout != -1)
523: (void) close(remout);
524: if (waitpid(do_cmd_pid, &status, 0) == -1)
525: errs = 1;
526: else {
527: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
528: errs = 1;
529: }
1.1 deraadt 530: }
531: exit(errs != 0);
532: }
533:
1.167 djm 534: /* Callback from atomicio6 to update progress meter and limit bandwidth */
535: static int
536: scpio(void *_cnt, size_t s)
1.161 djm 537: {
1.167 djm 538: off_t *cnt = (off_t *)_cnt;
539:
540: *cnt += s;
541: if (limit_kbps > 0)
542: bandwidth_limit(&bwlimit, s);
543: return 0;
1.161 djm 544: }
545:
1.176 guenther 546: static int
547: do_times(int fd, int verb, const struct stat *sb)
548: {
549: /* strlen(2^64) == 20; strlen(10^6) == 7 */
550: char buf[(20 + 7 + 2) * 2 + 2];
551:
552: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
553: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
554: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
555: if (verb) {
556: fprintf(stderr, "File mtime %lld atime %lld\n",
557: (long long)sb->st_mtime, (long long)sb->st_atime);
558: fprintf(stderr, "Sending file timestamps: %s", buf);
559: }
560: (void) atomicio(vwrite, fd, buf, strlen(buf));
561: return (response());
562: }
563:
1.1 deraadt 564: void
1.104 djm 565: toremote(char *targ, int argc, char **argv)
1.1 deraadt 566: {
1.120 deraadt 567: char *bp, *host, *src, *suser, *thost, *tuser, *arg;
1.129 djm 568: arglist alist;
1.140 deraadt 569: int i;
1.168 djm 570: u_int j;
1.129 djm 571:
572: memset(&alist, '\0', sizeof(alist));
573: alist.list = NULL;
1.1 deraadt 574:
575: *targ++ = 0;
576: if (*targ == 0)
577: targ = ".";
578:
1.121 djm 579: arg = xstrdup(argv[argc - 1]);
1.120 deraadt 580: if ((thost = strrchr(arg, '@'))) {
1.1 deraadt 581: /* user@host */
582: *thost++ = 0;
1.120 deraadt 583: tuser = arg;
1.1 deraadt 584: if (*tuser == '\0')
585: tuser = NULL;
586: } else {
1.120 deraadt 587: thost = arg;
1.1 deraadt 588: tuser = NULL;
589: }
590:
1.129 djm 591: if (tuser != NULL && !okname(tuser)) {
1.173 djm 592: free(arg);
1.129 djm 593: return;
594: }
595:
1.1 deraadt 596: for (i = 0; i < argc - 1; i++) {
597: src = colon(argv[i]);
1.169 markus 598: if (src && throughlocal) { /* extended remote to remote */
599: *src++ = 0;
600: if (*src == 0)
601: src = ".";
602: host = strrchr(argv[i], '@');
603: if (host) {
604: *host++ = 0;
605: host = cleanhostname(host);
606: suser = argv[i];
607: if (*suser == '\0')
608: suser = pwd->pw_name;
609: else if (!okname(suser))
610: continue;
611: } else {
612: host = cleanhostname(argv[i]);
613: suser = NULL;
614: }
1.171 djm 615: xasprintf(&bp, "%s -f %s%s", cmd,
616: *src == '-' ? "-- " : "", src);
1.169 markus 617: if (do_cmd(host, suser, bp, &remin, &remout) < 0)
618: exit(1);
1.173 djm 619: free(bp);
1.169 markus 620: host = cleanhostname(thost);
1.171 djm 621: xasprintf(&bp, "%s -t %s%s", cmd,
622: *targ == '-' ? "-- " : "", targ);
1.169 markus 623: if (do_cmd2(host, tuser, bp, remin, remout) < 0)
624: exit(1);
1.173 djm 625: free(bp);
1.169 markus 626: (void) close(remin);
627: (void) close(remout);
628: remin = remout = -1;
629: } else if (src) { /* standard remote to remote */
1.129 djm 630: freeargs(&alist);
631: addargs(&alist, "%s", ssh_program);
632: addargs(&alist, "-x");
1.168 djm 633: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 634: addargs(&alist, "-n");
1.168 djm 635: for (j = 0; j < remote_remote_args.num; j++) {
636: addargs(&alist, "%s",
637: remote_remote_args.list[j]);
638: }
1.1 deraadt 639: *src++ = 0;
640: if (*src == 0)
641: src = ".";
1.94 markus 642: host = strrchr(argv[i], '@');
1.129 djm 643:
1.1 deraadt 644: if (host) {
645: *host++ = 0;
1.23 markus 646: host = cleanhostname(host);
1.1 deraadt 647: suser = argv[i];
648: if (*suser == '\0')
649: suser = pwd->pw_name;
1.129 djm 650: else if (!okname(suser))
1.101 markus 651: continue;
1.129 djm 652: addargs(&alist, "-l");
653: addargs(&alist, "%s", suser);
1.23 markus 654: } else {
655: host = cleanhostname(argv[i]);
656: }
1.165 guenther 657: addargs(&alist, "--");
1.129 djm 658: addargs(&alist, "%s", host);
659: addargs(&alist, "%s", cmd);
660: addargs(&alist, "%s", src);
661: addargs(&alist, "%s%s%s:%s",
662: tuser ? tuser : "", tuser ? "@" : "",
663: thost, targ);
664: if (do_local_cmd(&alist) != 0)
1.109 markus 665: errs = 1;
1.18 markus 666: } else { /* local to remote */
1.1 deraadt 667: if (remin == -1) {
1.171 djm 668: xasprintf(&bp, "%s -t %s%s", cmd,
669: *targ == '-' ? "-- " : "", targ);
1.23 markus 670: host = cleanhostname(thost);
1.35 deraadt 671: if (do_cmd(host, tuser, bp, &remin,
1.140 deraadt 672: &remout) < 0)
1.18 markus 673: exit(1);
1.1 deraadt 674: if (response() < 0)
675: exit(1);
1.173 djm 676: free(bp);
1.1 deraadt 677: }
1.18 markus 678: source(1, argv + i);
1.1 deraadt 679: }
680: }
1.173 djm 681: free(arg);
1.1 deraadt 682: }
683:
684: void
1.104 djm 685: tolocal(int argc, char **argv)
1.1 deraadt 686: {
687: char *bp, *host, *src, *suser;
1.129 djm 688: arglist alist;
1.140 deraadt 689: int i;
1.129 djm 690:
691: memset(&alist, '\0', sizeof(alist));
692: alist.list = NULL;
1.1 deraadt 693:
694: for (i = 0; i < argc - 1; i++) {
1.18 markus 695: if (!(src = colon(argv[i]))) { /* Local to local. */
1.129 djm 696: freeargs(&alist);
697: addargs(&alist, "%s", _PATH_CP);
698: if (iamrecursive)
699: addargs(&alist, "-r");
700: if (pflag)
701: addargs(&alist, "-p");
1.165 guenther 702: addargs(&alist, "--");
1.129 djm 703: addargs(&alist, "%s", argv[i]);
704: addargs(&alist, "%s", argv[argc-1]);
705: if (do_local_cmd(&alist))
1.1 deraadt 706: ++errs;
707: continue;
708: }
709: *src++ = 0;
710: if (*src == 0)
711: src = ".";
1.94 markus 712: if ((host = strrchr(argv[i], '@')) == NULL) {
1.1 deraadt 713: host = argv[i];
714: suser = NULL;
715: } else {
716: *host++ = 0;
717: suser = argv[i];
718: if (*suser == '\0')
719: suser = pwd->pw_name;
720: }
1.23 markus 721: host = cleanhostname(host);
1.171 djm 722: xasprintf(&bp, "%s -f %s%s",
723: cmd, *src == '-' ? "-- " : "", src);
1.140 deraadt 724: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
1.173 djm 725: free(bp);
1.18 markus 726: ++errs;
727: continue;
1.1 deraadt 728: }
1.173 djm 729: free(bp);
1.1 deraadt 730: sink(1, argv + argc - 1);
1.18 markus 731: (void) close(remin);
1.1 deraadt 732: remin = remout = -1;
733: }
734: }
735:
736: void
1.104 djm 737: source(int argc, char **argv)
1.1 deraadt 738: {
739: struct stat stb;
740: static BUF buffer;
741: BUF *bp;
1.163 dtucker 742: off_t i, statbytes;
1.180 djm 743: size_t amt, nr;
1.125 dtucker 744: int fd = -1, haderr, indx;
1.181 deraadt 745: char *last, *name, buf[2048], encname[PATH_MAX];
1.65 deraadt 746: int len;
1.1 deraadt 747:
748: for (indx = 0; indx < argc; ++indx) {
1.18 markus 749: name = argv[indx];
1.11 aaron 750: statbytes = 0;
1.65 deraadt 751: len = strlen(name);
752: while (len > 1 && name[len-1] == '/')
753: name[--len] = '\0';
1.158 dtucker 754: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
755: goto syserr;
1.85 markus 756: if (strchr(name, '\n') != NULL) {
1.158 dtucker 757: strnvis(encname, name, sizeof(encname), VIS_NL);
758: name = encname;
1.85 markus 759: }
1.1 deraadt 760: if (fstat(fd, &stb) < 0) {
761: syserr: run_err("%s: %s", name, strerror(errno));
762: goto next;
763: }
1.163 dtucker 764: if (stb.st_size < 0) {
765: run_err("%s: %s", name, "Negative file size");
766: goto next;
767: }
1.157 djm 768: unset_nonblock(fd);
1.1 deraadt 769: switch (stb.st_mode & S_IFMT) {
770: case S_IFREG:
771: break;
772: case S_IFDIR:
773: if (iamrecursive) {
774: rsource(name, &stb);
775: goto next;
776: }
777: /* FALLTHROUGH */
778: default:
779: run_err("%s: not a regular file", name);
780: goto next;
781: }
782: if ((last = strrchr(name, '/')) == NULL)
783: last = name;
784: else
785: ++last;
1.11 aaron 786: curfile = last;
1.1 deraadt 787: if (pflag) {
1.176 guenther 788: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 789: goto next;
790: }
791: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 792: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 793: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 794: (long long)stb.st_size, last);
1.186 schwarze 795: if (verbose_mode)
796: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 797: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 798: if (response() < 0)
799: goto next;
1.161 djm 800: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 801: next: if (fd != -1) {
802: (void) close(fd);
803: fd = -1;
804: }
1.1 deraadt 805: continue;
806: }
1.97 fgsch 807: if (showprogress)
808: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 809: set_nonblock(remout);
1.1 deraadt 810: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
811: amt = bp->cnt;
1.163 dtucker 812: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 813: amt = stb.st_size - i;
814: if (!haderr) {
1.180 djm 815: if ((nr = atomicio(read, fd,
816: bp->buf, amt)) != amt) {
1.122 avsm 817: haderr = errno;
1.180 djm 818: memset(bp->buf + nr, 0, amt - nr);
819: }
1.1 deraadt 820: }
1.161 djm 821: /* Keep writing after error to retain sync */
822: if (haderr) {
823: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 824: memset(bp->buf, 0, amt);
1.161 djm 825: continue;
1.1 deraadt 826: }
1.167 djm 827: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 828: &statbytes) != amt)
829: haderr = errno;
1.1 deraadt 830: }
1.161 djm 831: unset_nonblock(remout);
1.4 aaron 832:
1.127 deraadt 833: if (fd != -1) {
834: if (close(fd) < 0 && !haderr)
835: haderr = errno;
836: fd = -1;
837: }
1.1 deraadt 838: if (!haderr)
1.107 deraadt 839: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 840: else
841: run_err("%s: %s", name, strerror(haderr));
1.18 markus 842: (void) response();
1.185 dtucker 843: if (showprogress)
844: stop_progress_meter();
1.1 deraadt 845: }
846: }
847:
848: void
1.104 djm 849: rsource(char *name, struct stat *statp)
1.1 deraadt 850: {
851: DIR *dirp;
852: struct dirent *dp;
1.181 deraadt 853: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 854:
855: if (!(dirp = opendir(name))) {
856: run_err("%s: %s", name, strerror(errno));
857: return;
858: }
859: last = strrchr(name, '/');
1.183 mmcc 860: if (last == NULL)
1.1 deraadt 861: last = name;
862: else
863: last++;
864: if (pflag) {
1.176 guenther 865: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 866: closedir(dirp);
867: return;
868: }
869: }
1.55 deraadt 870: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 871: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 872: if (verbose_mode)
1.186 schwarze 873: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 874: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 875: if (response() < 0) {
876: closedir(dirp);
877: return;
878: }
1.63 stevesk 879: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 880: if (dp->d_ino == 0)
881: continue;
882: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
883: continue;
884: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
885: run_err("%s/%s: name too long", name, dp->d_name);
886: continue;
887: }
1.55 deraadt 888: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 889: vect[0] = path;
890: source(1, vect);
891: }
1.18 markus 892: (void) closedir(dirp);
1.107 deraadt 893: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 894: (void) response();
1.1 deraadt 895: }
896:
897: void
1.104 djm 898: sink(int argc, char **argv)
1.1 deraadt 899: {
900: static BUF buffer;
901: struct stat stb;
1.18 markus 902: enum {
903: YES, NO, DISPLAYED
904: } wrerr;
1.1 deraadt 905: BUF *bp;
1.122 avsm 906: off_t i;
1.124 djm 907: size_t j, count;
1.140 deraadt 908: int amt, exists, first, ofd;
909: mode_t mode, omode, mask;
1.97 fgsch 910: off_t size, statbytes;
1.176 guenther 911: unsigned long long ull;
1.36 deraadt 912: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 913: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.40 markus 914: struct timeval tv[2];
1.1 deraadt 915:
1.66 stevesk 916: #define atime tv[0]
917: #define mtime tv[1]
1.118 deraadt 918: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 919:
920: setimes = targisdir = 0;
921: mask = umask(0);
922: if (!pflag)
1.18 markus 923: (void) umask(mask);
1.1 deraadt 924: if (argc != 1) {
925: run_err("ambiguous target");
926: exit(1);
927: }
928: targ = *argv;
929: if (targetshouldbedirectory)
930: verifydir(targ);
1.18 markus 931:
1.107 deraadt 932: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 933: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
934: targisdir = 1;
935: for (first = 1;; first = 0) {
936: cp = buf;
1.122 avsm 937: if (atomicio(read, remin, cp, 1) != 1)
1.1 deraadt 938: return;
939: if (*cp++ == '\n')
940: SCREWUP("unexpected <newline>");
941: do {
1.30 deraadt 942: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 943: SCREWUP("lost connection");
944: *cp++ = ch;
945: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
946: *cp = 0;
1.114 markus 947: if (verbose_mode)
1.186 schwarze 948: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 949:
950: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 951: if (iamremote == 0) {
952: (void) snmprintf(visbuf, sizeof(visbuf),
953: NULL, "%s", buf + 1);
1.107 deraadt 954: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 955: visbuf, strlen(visbuf));
956: }
1.1 deraadt 957: if (buf[0] == '\02')
958: exit(1);
959: ++errs;
960: continue;
961: }
962: if (buf[0] == 'E') {
1.107 deraadt 963: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 964: return;
965: }
966: if (ch == '\n')
967: *--cp = 0;
968:
969: cp = buf;
970: if (*cp == 'T') {
971: setimes++;
972: cp++;
1.176 guenther 973: if (!isdigit((unsigned char)*cp))
974: SCREWUP("mtime.sec not present");
975: ull = strtoull(cp, &cp, 10);
1.66 stevesk 976: if (!cp || *cp++ != ' ')
1.1 deraadt 977: SCREWUP("mtime.sec not delimited");
1.178 djm 978: if ((time_t)ull < 0 ||
979: (unsigned long long)(time_t)ull != ull)
1.176 guenther 980: setimes = 0; /* out of range */
981: mtime.tv_sec = ull;
1.66 stevesk 982: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 983: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
984: mtime.tv_usec > 999999)
1.1 deraadt 985: SCREWUP("mtime.usec not delimited");
1.176 guenther 986: if (!isdigit((unsigned char)*cp))
987: SCREWUP("atime.sec not present");
988: ull = strtoull(cp, &cp, 10);
1.66 stevesk 989: if (!cp || *cp++ != ' ')
1.1 deraadt 990: SCREWUP("atime.sec not delimited");
1.178 djm 991: if ((time_t)ull < 0 ||
992: (unsigned long long)(time_t)ull != ull)
1.176 guenther 993: setimes = 0; /* out of range */
994: atime.tv_sec = ull;
1.66 stevesk 995: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 996: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
997: atime.tv_usec > 999999)
1.1 deraadt 998: SCREWUP("atime.usec not delimited");
1.107 deraadt 999: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1000: continue;
1001: }
1002: if (*cp != 'C' && *cp != 'D') {
1003: /*
1004: * Check for the case "rcp remote:foo\* local:bar".
1005: * In this case, the line "No match." can be returned
1006: * by the shell before the rcp command on the remote is
1007: * executed so the ^Aerror_message convention isn't
1008: * followed.
1009: */
1010: if (first) {
1011: run_err("%s", cp);
1012: exit(1);
1013: }
1014: SCREWUP("expected control record");
1015: }
1016: mode = 0;
1017: for (++cp; cp < buf + 5; cp++) {
1018: if (*cp < '0' || *cp > '7')
1019: SCREWUP("bad mode");
1020: mode = (mode << 3) | (*cp - '0');
1021: }
1022: if (*cp++ != ' ')
1023: SCREWUP("mode not delimited");
1024:
1.179 deraadt 1025: for (size = 0; isdigit((unsigned char)*cp);)
1.1 deraadt 1026: size = size * 10 + (*cp++ - '0');
1027: if (*cp++ != ' ')
1028: SCREWUP("size not delimited");
1.114 markus 1029: if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
1030: run_err("error: unexpected filename: %s", cp);
1031: exit(1);
1032: }
1.1 deraadt 1033: if (targisdir) {
1034: static char *namebuf;
1.124 djm 1035: static size_t cursize;
1.1 deraadt 1036: size_t need;
1037:
1038: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1039: if (need > cursize) {
1.173 djm 1040: free(namebuf);
1.18 markus 1041: namebuf = xmalloc(need);
1.55 deraadt 1042: cursize = need;
1043: }
1044: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1045: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1046: np = namebuf;
1047: } else
1048: np = targ;
1.12 aaron 1049: curfile = cp;
1.1 deraadt 1050: exists = stat(np, &stb) == 0;
1051: if (buf[0] == 'D') {
1052: int mod_flag = pflag;
1.114 markus 1053: if (!iamrecursive)
1054: SCREWUP("received directory without -r");
1.1 deraadt 1055: if (exists) {
1056: if (!S_ISDIR(stb.st_mode)) {
1057: errno = ENOTDIR;
1058: goto bad;
1059: }
1060: if (pflag)
1.18 markus 1061: (void) chmod(np, mode);
1.1 deraadt 1062: } else {
1.18 markus 1063: /* Handle copying from a read-only
1064: directory */
1.1 deraadt 1065: mod_flag = 1;
1066: if (mkdir(np, mode | S_IRWXU) < 0)
1067: goto bad;
1068: }
1.58 danh 1069: vect[0] = xstrdup(np);
1.1 deraadt 1070: sink(1, vect);
1071: if (setimes) {
1072: setimes = 0;
1.59 deraadt 1073: if (utimes(vect[0], tv) < 0)
1.18 markus 1074: run_err("%s: set times: %s",
1.59 deraadt 1075: vect[0], strerror(errno));
1.1 deraadt 1076: }
1077: if (mod_flag)
1.59 deraadt 1078: (void) chmod(vect[0], mode);
1.173 djm 1079: free(vect[0]);
1.1 deraadt 1080: continue;
1081: }
1082: omode = mode;
1.174 dtucker 1083: mode |= S_IWUSR;
1.71 markus 1084: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 1085: bad: run_err("%s: %s", np, strerror(errno));
1086: continue;
1087: }
1.107 deraadt 1088: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1089: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1090: (void) close(ofd);
1.1 deraadt 1091: continue;
1092: }
1093: cp = bp->buf;
1094: wrerr = NO;
1.7 deraadt 1095:
1.12 aaron 1096: statbytes = 0;
1.97 fgsch 1097: if (showprogress)
1098: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1099: set_nonblock(remin);
1100: for (count = i = 0; i < size; i += bp->cnt) {
1101: amt = bp->cnt;
1.1 deraadt 1102: if (i + amt > size)
1103: amt = size - i;
1104: count += amt;
1105: do {
1.167 djm 1106: j = atomicio6(read, remin, cp, amt,
1107: scpio, &statbytes);
1.122 avsm 1108: if (j == 0) {
1.161 djm 1109: run_err("%s", j != EPIPE ?
1110: strerror(errno) :
1.63 stevesk 1111: "dropped connection");
1.1 deraadt 1112: exit(1);
1113: }
1114: amt -= j;
1115: cp += j;
1116: } while (amt > 0);
1.112 djm 1117:
1.1 deraadt 1118: if (count == bp->cnt) {
1119: /* Keep reading so we stay sync'd up. */
1120: if (wrerr == NO) {
1.122 avsm 1121: if (atomicio(vwrite, ofd, bp->buf,
1122: count) != count) {
1.1 deraadt 1123: wrerr = YES;
1.122 avsm 1124: wrerrno = errno;
1.1 deraadt 1125: }
1126: }
1127: count = 0;
1128: cp = bp->buf;
1129: }
1130: }
1.161 djm 1131: unset_nonblock(remin);
1.1 deraadt 1132: if (count != 0 && wrerr == NO &&
1.122 avsm 1133: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1134: wrerr = YES;
1.122 avsm 1135: wrerrno = errno;
1.1 deraadt 1136: }
1.159 djm 1137: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1138: ftruncate(ofd, size) != 0) {
1.1 deraadt 1139: run_err("%s: truncate: %s", np, strerror(errno));
1140: wrerr = DISPLAYED;
1141: }
1142: if (pflag) {
1143: if (exists || omode != mode)
1.116 dtucker 1144: if (fchmod(ofd, omode)) {
1.1 deraadt 1145: run_err("%s: set mode: %s",
1.63 stevesk 1146: np, strerror(errno));
1.116 dtucker 1147: wrerr = DISPLAYED;
1148: }
1.1 deraadt 1149: } else {
1150: if (!exists && omode != mode)
1.116 dtucker 1151: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1152: run_err("%s: set mode: %s",
1.63 stevesk 1153: np, strerror(errno));
1.116 dtucker 1154: wrerr = DISPLAYED;
1155: }
1.1 deraadt 1156: }
1.33 provos 1157: if (close(ofd) == -1) {
1158: wrerr = YES;
1159: wrerrno = errno;
1160: }
1.18 markus 1161: (void) response();
1.185 dtucker 1162: if (showprogress)
1163: stop_progress_meter();
1.1 deraadt 1164: if (setimes && wrerr == NO) {
1165: setimes = 0;
1.40 markus 1166: if (utimes(np, tv) < 0) {
1.1 deraadt 1167: run_err("%s: set times: %s",
1.63 stevesk 1168: np, strerror(errno));
1.1 deraadt 1169: wrerr = DISPLAYED;
1170: }
1171: }
1.18 markus 1172: switch (wrerr) {
1.1 deraadt 1173: case YES:
1174: run_err("%s: %s", np, strerror(wrerrno));
1175: break;
1176: case NO:
1.107 deraadt 1177: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1178: break;
1179: case DISPLAYED:
1180: break;
1181: }
1182: }
1183: screwup:
1184: run_err("protocol error: %s", why);
1185: exit(1);
1186: }
1187:
1188: int
1.86 itojun 1189: response(void)
1.1 deraadt 1190: {
1.186 schwarze 1191: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1192:
1.30 deraadt 1193: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1194: lostconn(0);
1195:
1196: cp = rbuf;
1.18 markus 1197: switch (resp) {
1198: case 0: /* ok */
1.1 deraadt 1199: return (0);
1200: default:
1201: *cp++ = resp;
1202: /* FALLTHROUGH */
1.18 markus 1203: case 1: /* error, followed by error msg */
1204: case 2: /* fatal error, "" */
1.1 deraadt 1205: do {
1.30 deraadt 1206: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1207: lostconn(0);
1208: *cp++ = ch;
1209: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1210:
1.186 schwarze 1211: if (!iamremote) {
1212: cp[-1] = '\0';
1213: (void) snmprintf(visbuf, sizeof(visbuf),
1214: NULL, "%s\n", rbuf);
1215: (void) atomicio(vwrite, STDERR_FILENO,
1216: visbuf, strlen(visbuf));
1217: }
1.1 deraadt 1218: ++errs;
1219: if (resp == 1)
1220: return (-1);
1221: exit(1);
1222: }
1223: /* NOTREACHED */
1224: }
1225:
1226: void
1.86 itojun 1227: usage(void)
1.1 deraadt 1228: {
1.83 stevesk 1229: (void) fprintf(stderr,
1.170 jmc 1230: "usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.110 jmc 1231: " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1.160 sobrado 1232: " [[user@]host1:]file1 ... [[user@]host2:]file2\n");
1.1 deraadt 1233: exit(1);
1234: }
1235:
1236: void
1.18 markus 1237: run_err(const char *fmt,...)
1.1 deraadt 1238: {
1239: static FILE *fp;
1240: va_list ap;
1241:
1242: ++errs;
1.136 biorn 1243: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1244: (void) fprintf(fp, "%c", 0x01);
1245: (void) fprintf(fp, "scp: ");
1246: va_start(ap, fmt);
1247: (void) vfprintf(fp, fmt, ap);
1248: va_end(ap);
1249: (void) fprintf(fp, "\n");
1250: (void) fflush(fp);
1251: }
1.18 markus 1252:
1253: if (!iamremote) {
1.73 markus 1254: va_start(ap, fmt);
1.186 schwarze 1255: vfmprintf(stderr, fmt, ap);
1.73 markus 1256: va_end(ap);
1.18 markus 1257: fprintf(stderr, "\n");
1258: }
1.1 deraadt 1259: }
1260:
1261: void
1.104 djm 1262: verifydir(char *cp)
1.1 deraadt 1263: {
1264: struct stat stb;
1265:
1266: if (!stat(cp, &stb)) {
1267: if (S_ISDIR(stb.st_mode))
1268: return;
1269: errno = ENOTDIR;
1270: }
1271: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1272: killchild(0);
1.1 deraadt 1273: }
1274:
1275: int
1.104 djm 1276: okname(char *cp0)
1.1 deraadt 1277: {
1278: int c;
1279: char *cp;
1280:
1281: cp = cp0;
1282: do {
1.75 deraadt 1283: c = (int)*cp;
1.1 deraadt 1284: if (c & 0200)
1285: goto bad;
1.179 deraadt 1286: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1287: switch (c) {
1288: case '\'':
1289: case '"':
1290: case '`':
1291: case ' ':
1292: case '#':
1293: goto bad;
1294: default:
1295: break;
1296: }
1297: }
1.1 deraadt 1298: } while (*++cp);
1299: return (1);
1300:
1.186 schwarze 1301: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1302: return (0);
1303: }
1304:
1305: BUF *
1.104 djm 1306: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1307: {
1308: size_t size;
1309: struct stat stb;
1310:
1311: if (fstat(fd, &stb) < 0) {
1312: run_err("fstat: %s", strerror(errno));
1313: return (0);
1314: }
1.187 ! deraadt 1315: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1316: if (size == 0)
1.18 markus 1317: size = blksize;
1.1 deraadt 1318: if (bp->cnt >= size)
1319: return (bp);
1.18 markus 1320: if (bp->buf == NULL)
1321: bp->buf = xmalloc(size);
1322: else
1.182 deraadt 1323: bp->buf = xreallocarray(bp->buf, 1, size);
1.81 markus 1324: memset(bp->buf, 0, size);
1.1 deraadt 1325: bp->cnt = size;
1326: return (bp);
1327: }
1328:
1329: void
1.104 djm 1330: lostconn(int signo)
1.1 deraadt 1331: {
1332: if (!iamremote)
1.172 dtucker 1333: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1334: if (signo)
1335: _exit(1);
1336: else
1337: exit(1);
1.4 aaron 1338: }
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