Annotation of src/usr.bin/ssh/scp.c, Revision 1.82
1.1 deraadt 1: /*
1.38 deraadt 2: * scp - secure remote copy. This is basically patched BSD rcp which
3: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 4: *
1.38 deraadt 5: * NOTE: This version should NOT be suid root. (This uses ssh to
6: * do the transfer and ssh has the necessary privileges.)
1.27 markus 7: *
1.38 deraadt 8: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
9: *
10: * As far as I am concerned, the code I have written for this software
11: * can be used freely for any purpose. Any derived versions of this
12: * software must be clearly marked as such, and if the derived work is
13: * incompatible with the protocol description in the RFC file, it must be
14: * called by a name other than "ssh" or "Secure Shell".
1.39 markus 15: */
1.38 deraadt 16: /*
1.60 deraadt 17: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 19: *
1.38 deraadt 20: * Redistribution and use in source and binary forms, with or without
21: * modification, are permitted provided that the following conditions
22: * are met:
23: * 1. Redistributions of source code must retain the above copyright
24: * notice, this list of conditions and the following disclaimer.
25: * 2. Redistributions in binary form must reproduce the above copyright
26: * notice, this list of conditions and the following disclaimer in the
27: * documentation and/or other materials provided with the distribution.
1.27 markus 28: *
1.38 deraadt 29: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39: */
1.1 deraadt 40:
41: /*
1.35 deraadt 42: * Parts from:
43: *
1.1 deraadt 44: * Copyright (c) 1983, 1990, 1992, 1993, 1995
45: * The Regents of the University of California. All rights reserved.
46: *
47: * Redistribution and use in source and binary forms, with or without
48: * modification, are permitted provided that the following conditions
49: * are met:
50: * 1. Redistributions of source code must retain the above copyright
51: * notice, this list of conditions and the following disclaimer.
52: * 2. Redistributions in binary form must reproduce the above copyright
53: * notice, this list of conditions and the following disclaimer in the
54: * documentation and/or other materials provided with the distribution.
55: * 3. All advertising materials mentioning features or use of this software
56: * must display the following acknowledgement:
57: * This product includes software developed by the University of
58: * California, Berkeley and its contributors.
59: * 4. Neither the name of the University nor the names of its contributors
60: * may be used to endorse or promote products derived from this software
61: * without specific prior written permission.
62: *
63: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73: * SUCH DAMAGE.
74: *
75: */
76:
77: #include "includes.h"
1.82 ! stevesk 78: RCSID("$OpenBSD: scp.c,v 1.81 2001/08/29 20:44:03 markus Exp $");
1.1 deraadt 79:
80: #include "xmalloc.h"
1.51 markus 81: #include "atomicio.h"
1.50 markus 82: #include "pathnames.h"
1.51 markus 83: #include "log.h"
1.69 mouring 84: #include "misc.h"
1.1 deraadt 85:
1.11 aaron 86: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 87: #define STALLTIME 5
1.79 stevesk 88: /* alarm() interval for updating progress meter */
89: #define PROGRESSTIME 1
1.4 aaron 90:
1.11 aaron 91: /* Visual statistics about files as they are transferred. */
92: void progressmeter(int);
93:
94: /* Returns width of the terminal (for progress meter calculations). */
95: int getttywidth(void);
1.35 deraadt 96: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 97:
1.70 mouring 98: /* Struct for addargs */
99: arglist args;
1.41 markus 100:
1.11 aaron 101: /* Time a transfer started. */
1.4 aaron 102: static struct timeval start;
1.11 aaron 103:
104: /* Number of bytes of current file transferred so far. */
1.68 markus 105: volatile off_t statbytes;
1.11 aaron 106:
107: /* Total size of current file. */
1.15 markus 108: off_t totalbytes = 0;
1.11 aaron 109:
110: /* Name of current file being transferred. */
111: char *curfile;
1.4 aaron 112:
1.1 deraadt 113: /* This is set to non-zero to enable verbose mode. */
1.17 markus 114: int verbose_mode = 0;
1.1 deraadt 115:
1.6 aaron 116: /* This is set to zero if the progressmeter is not desired. */
117: int showprogress = 1;
118:
1.34 deraadt 119: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 120: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 121:
1.20 markus 122: /*
123: * This function executes the given command as the specified user on the
124: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
125: * assigns the input and output file descriptors on success.
126: */
1.1 deraadt 127:
1.27 markus 128: int
1.35 deraadt 129: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 130: {
1.18 markus 131: int pin[2], pout[2], reserved[2];
132:
133: if (verbose_mode)
1.78 deraadt 134: fprintf(stderr,
135: "Executing: program %s host %s, user %s, command %s\n",
136: ssh_program, host,
137: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 138:
1.20 markus 139: /*
140: * Reserve two descriptors so that the real pipes won't get
141: * descriptors 0 and 1 because that will screw up dup2 below.
142: */
1.18 markus 143: pipe(reserved);
144:
145: /* Create a socket pair for communicating with ssh. */
146: if (pipe(pin) < 0)
147: fatal("pipe: %s", strerror(errno));
148: if (pipe(pout) < 0)
149: fatal("pipe: %s", strerror(errno));
150:
151: /* Free the reserved descriptors. */
152: close(reserved[0]);
153: close(reserved[1]);
154:
155: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 156: if (fork() == 0) {
1.18 markus 157: /* Child. */
158: close(pin[1]);
159: close(pout[0]);
160: dup2(pin[0], 0);
161: dup2(pout[1], 1);
162: close(pin[0]);
163: close(pout[1]);
164:
1.41 markus 165: args.list[0] = ssh_program;
166: if (remuser != NULL)
1.70 mouring 167: addargs(&args, "-l%s", remuser);
168: addargs(&args, "%s", host);
169: addargs(&args, "%s", cmd);
1.18 markus 170:
1.41 markus 171: execvp(ssh_program, args.list);
1.34 deraadt 172: perror(ssh_program);
1.18 markus 173: exit(1);
174: }
175: /* Parent. Close the other side, and return the local side. */
176: close(pin[0]);
177: *fdout = pin[1];
178: close(pout[1]);
179: *fdin = pout[0];
180: return 0;
1.1 deraadt 181: }
182:
183: typedef struct {
184: int cnt;
185: char *buf;
186: } BUF;
187:
1.18 markus 188: BUF *allocbuf(BUF *, int, int);
189: void lostconn(int);
190: void nospace(void);
191: int okname(char *);
192: void run_err(const char *,...);
193: void verifydir(char *);
1.1 deraadt 194:
195: struct passwd *pwd;
1.18 markus 196: uid_t userid;
1.1 deraadt 197: int errs, remin, remout;
198: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
199:
200: #define CMDNEEDS 64
201: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
202:
1.18 markus 203: int response(void);
204: void rsource(char *, struct stat *);
205: void sink(int, char *[]);
206: void source(int, char *[]);
207: void tolocal(int, char *[]);
208: void toremote(char *, int, char *[]);
209: void usage(void);
1.1 deraadt 210:
211: int
212: main(argc, argv)
213: int argc;
214: char *argv[];
215: {
216: int ch, fflag, tflag;
217: char *targ;
218: extern char *optarg;
219: extern int optind;
220:
1.41 markus 221: args.list = NULL;
1.70 mouring 222: addargs(&args, "ssh"); /* overwritten with ssh_program */
223: addargs(&args, "-x");
1.82 ! stevesk 224: addargs(&args, "-oForwardAgent no");
1.70 mouring 225: addargs(&args, "-oFallBackToRsh no");
1.41 markus 226:
1.1 deraadt 227: fflag = tflag = 0;
1.49 markus 228: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 229: switch (ch) {
230: /* User-visible flags. */
1.23 markus 231: case '4':
1.41 markus 232: case '6':
233: case 'C':
1.70 mouring 234: addargs(&args, "-%c", ch);
1.41 markus 235: break;
236: case 'o':
237: case 'c':
238: case 'i':
1.70 mouring 239: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 240: break;
1.41 markus 241: case 'P':
1.70 mouring 242: addargs(&args, "-p%s", optarg);
1.41 markus 243: break;
244: case 'B':
1.70 mouring 245: addargs(&args, "-oBatchmode yes");
1.23 markus 246: break;
1.1 deraadt 247: case 'p':
248: pflag = 1;
249: break;
250: case 'r':
251: iamrecursive = 1;
252: break;
1.34 deraadt 253: case 'S':
1.41 markus 254: ssh_program = xstrdup(optarg);
255: break;
256: case 'v':
1.72 markus 257: addargs(&args, "-v");
1.41 markus 258: verbose_mode = 1;
259: break;
260: case 'q':
261: showprogress = 0;
1.34 deraadt 262: break;
263:
1.18 markus 264: /* Server options. */
1.1 deraadt 265: case 'd':
266: targetshouldbedirectory = 1;
267: break;
1.18 markus 268: case 'f': /* "from" */
1.1 deraadt 269: iamremote = 1;
270: fflag = 1;
271: break;
1.18 markus 272: case 't': /* "to" */
1.1 deraadt 273: iamremote = 1;
274: tflag = 1;
275: break;
276: default:
277: usage();
278: }
279: argc -= optind;
280: argv += optind;
281:
282: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 283: fatal("unknown user %d", (int) userid);
1.1 deraadt 284:
1.18 markus 285: if (!isatty(STDERR_FILENO))
1.7 deraadt 286: showprogress = 0;
287:
1.1 deraadt 288: remin = STDIN_FILENO;
289: remout = STDOUT_FILENO;
290:
1.52 stevesk 291: if (fflag) {
1.18 markus 292: /* Follow "protocol", send data. */
293: (void) response();
1.1 deraadt 294: source(argc, argv);
295: exit(errs != 0);
296: }
1.18 markus 297: if (tflag) {
298: /* Receive data. */
1.1 deraadt 299: sink(argc, argv);
300: exit(errs != 0);
301: }
302: if (argc < 2)
303: usage();
304: if (argc > 2)
305: targetshouldbedirectory = 1;
306:
307: remin = remout = -1;
308: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 309: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
310: verbose_mode ? " -v" : "",
1.35 deraadt 311: iamrecursive ? " -r" : "", pflag ? " -p" : "",
312: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 313:
1.18 markus 314: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 315:
316: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
317: toremote(targ, argc, argv);
318: else {
1.18 markus 319: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 320: if (targetshouldbedirectory)
321: verifydir(argv[argc - 1]);
322: }
323: exit(errs != 0);
324: }
325:
326: void
327: toremote(targ, argc, argv)
328: char *targ, *argv[];
329: int argc;
330: {
331: int i, len;
332: char *bp, *host, *src, *suser, *thost, *tuser;
333:
334: *targ++ = 0;
335: if (*targ == 0)
336: targ = ".";
337:
338: if ((thost = strchr(argv[argc - 1], '@'))) {
339: /* user@host */
340: *thost++ = 0;
341: tuser = argv[argc - 1];
342: if (*tuser == '\0')
343: tuser = NULL;
344: else if (!okname(tuser))
345: exit(1);
346: } else {
347: thost = argv[argc - 1];
348: tuser = NULL;
349: }
350:
351: for (i = 0; i < argc - 1; i++) {
352: src = colon(argv[i]);
1.18 markus 353: if (src) { /* remote to remote */
1.1 deraadt 354: *src++ = 0;
355: if (*src == 0)
356: src = ".";
357: host = strchr(argv[i], '@');
1.34 deraadt 358: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 359: strlen(src) + (tuser ? strlen(tuser) : 0) +
360: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 361: bp = xmalloc(len);
1.1 deraadt 362: if (host) {
363: *host++ = 0;
1.23 markus 364: host = cleanhostname(host);
1.1 deraadt 365: suser = argv[i];
366: if (*suser == '\0')
367: suser = pwd->pw_name;
368: else if (!okname(suser))
369: continue;
1.55 deraadt 370: snprintf(bp, len,
371: "%s%s -x -o'FallBackToRsh no' -n "
372: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 373: ssh_program, verbose_mode ? " -v" : "",
374: suser, host, cmd, src,
375: tuser ? tuser : "", tuser ? "@" : "",
376: thost, targ);
1.23 markus 377: } else {
378: host = cleanhostname(argv[i]);
1.55 deraadt 379: snprintf(bp, len,
380: "exec %s%s -x -o'FallBackToRsh no' -n %s "
381: "%s %s '%s%s%s:%s'",
1.44 deraadt 382: ssh_program, verbose_mode ? " -v" : "",
383: host, cmd, src,
384: tuser ? tuser : "", tuser ? "@" : "",
385: thost, targ);
1.23 markus 386: }
1.18 markus 387: if (verbose_mode)
388: fprintf(stderr, "Executing: %s\n", bp);
389: (void) system(bp);
390: (void) xfree(bp);
391: } else { /* local to remote */
1.1 deraadt 392: if (remin == -1) {
393: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 394: bp = xmalloc(len);
1.55 deraadt 395: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 396: host = cleanhostname(thost);
1.35 deraadt 397: if (do_cmd(host, tuser, bp, &remin,
398: &remout, argc) < 0)
1.18 markus 399: exit(1);
1.1 deraadt 400: if (response() < 0)
401: exit(1);
1.18 markus 402: (void) xfree(bp);
1.1 deraadt 403: }
1.18 markus 404: source(1, argv + i);
1.1 deraadt 405: }
406: }
407: }
408:
409: void
410: tolocal(argc, argv)
411: int argc;
412: char *argv[];
413: {
414: int i, len;
415: char *bp, *host, *src, *suser;
416:
417: for (i = 0; i < argc - 1; i++) {
1.18 markus 418: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 419: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 420: strlen(argv[argc - 1]) + 20;
1.1 deraadt 421: bp = xmalloc(len);
1.55 deraadt 422: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 423: iamrecursive ? " -r" : "", pflag ? " -p" : "",
424: argv[i], argv[argc - 1]);
1.18 markus 425: if (verbose_mode)
426: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 427: if (system(bp))
428: ++errs;
1.18 markus 429: (void) xfree(bp);
1.1 deraadt 430: continue;
431: }
432: *src++ = 0;
433: if (*src == 0)
434: src = ".";
435: if ((host = strchr(argv[i], '@')) == NULL) {
436: host = argv[i];
437: suser = NULL;
438: } else {
439: *host++ = 0;
440: suser = argv[i];
441: if (*suser == '\0')
442: suser = pwd->pw_name;
443: else if (!okname(suser))
444: continue;
445: }
1.23 markus 446: host = cleanhostname(host);
1.1 deraadt 447: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 448: bp = xmalloc(len);
1.55 deraadt 449: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 450: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 451: (void) xfree(bp);
452: ++errs;
453: continue;
1.1 deraadt 454: }
1.18 markus 455: xfree(bp);
1.1 deraadt 456: sink(1, argv + argc - 1);
1.18 markus 457: (void) close(remin);
1.1 deraadt 458: remin = remout = -1;
459: }
460: }
461:
462: void
463: source(argc, argv)
464: int argc;
465: char *argv[];
466: {
467: struct stat stb;
468: static BUF buffer;
469: BUF *bp;
1.68 markus 470: off_t i, amt, result;
471: int fd, haderr, indx;
1.1 deraadt 472: char *last, *name, buf[2048];
1.65 deraadt 473: int len;
1.1 deraadt 474:
475: for (indx = 0; indx < argc; ++indx) {
1.18 markus 476: name = argv[indx];
1.11 aaron 477: statbytes = 0;
1.65 deraadt 478: len = strlen(name);
479: while (len > 1 && name[len-1] == '/')
480: name[--len] = '\0';
1.1 deraadt 481: if ((fd = open(name, O_RDONLY, 0)) < 0)
482: goto syserr;
483: if (fstat(fd, &stb) < 0) {
484: syserr: run_err("%s: %s", name, strerror(errno));
485: goto next;
486: }
487: switch (stb.st_mode & S_IFMT) {
488: case S_IFREG:
489: break;
490: case S_IFDIR:
491: if (iamrecursive) {
492: rsource(name, &stb);
493: goto next;
494: }
495: /* FALLTHROUGH */
496: default:
497: run_err("%s: not a regular file", name);
498: goto next;
499: }
500: if ((last = strrchr(name, '/')) == NULL)
501: last = name;
502: else
503: ++last;
1.11 aaron 504: curfile = last;
1.1 deraadt 505: if (pflag) {
506: /*
507: * Make it compatible with possible future
508: * versions expecting microseconds.
509: */
1.55 deraadt 510: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 511: (u_long) stb.st_mtime,
512: (u_long) stb.st_atime);
1.29 deraadt 513: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 514: if (response() < 0)
515: goto next;
516: }
517: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 518: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 519: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 520: (long long)stb.st_size, last);
1.18 markus 521: if (verbose_mode) {
522: fprintf(stderr, "Sending file modes: %s", buf);
523: fflush(stderr);
524: }
1.29 deraadt 525: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 526: if (response() < 0)
527: goto next;
528: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 529: next: (void) close(fd);
1.1 deraadt 530: continue;
531: }
1.12 aaron 532: if (showprogress) {
533: totalbytes = stb.st_size;
1.6 aaron 534: progressmeter(-1);
1.12 aaron 535: }
1.1 deraadt 536: /* Keep writing after an error so that we stay sync'd up. */
537: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
538: amt = bp->cnt;
539: if (i + amt > stb.st_size)
540: amt = stb.st_size - i;
541: if (!haderr) {
1.30 deraadt 542: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 543: if (result != amt)
544: haderr = result >= 0 ? EIO : errno;
545: }
546: if (haderr)
1.29 deraadt 547: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 548: else {
1.29 deraadt 549: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 550: if (result != amt)
551: haderr = result >= 0 ? EIO : errno;
1.4 aaron 552: statbytes += result;
1.1 deraadt 553: }
554: }
1.18 markus 555: if (showprogress)
1.6 aaron 556: progressmeter(1);
1.4 aaron 557:
1.1 deraadt 558: if (close(fd) < 0 && !haderr)
559: haderr = errno;
560: if (!haderr)
1.29 deraadt 561: (void) atomicio(write, remout, "", 1);
1.1 deraadt 562: else
563: run_err("%s: %s", name, strerror(haderr));
1.18 markus 564: (void) response();
1.1 deraadt 565: }
566: }
567:
568: void
569: rsource(name, statp)
570: char *name;
571: struct stat *statp;
572: {
573: DIR *dirp;
574: struct dirent *dp;
575: char *last, *vect[1], path[1100];
576:
577: if (!(dirp = opendir(name))) {
578: run_err("%s: %s", name, strerror(errno));
579: return;
580: }
581: last = strrchr(name, '/');
582: if (last == 0)
583: last = name;
584: else
585: last++;
586: if (pflag) {
1.55 deraadt 587: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 588: (u_long) statp->st_mtime,
589: (u_long) statp->st_atime);
1.29 deraadt 590: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 591: if (response() < 0) {
592: closedir(dirp);
593: return;
594: }
595: }
1.55 deraadt 596: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 597: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 598: if (verbose_mode)
599: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 600: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 601: if (response() < 0) {
602: closedir(dirp);
603: return;
604: }
1.63 stevesk 605: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 606: if (dp->d_ino == 0)
607: continue;
608: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
609: continue;
610: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
611: run_err("%s/%s: name too long", name, dp->d_name);
612: continue;
613: }
1.55 deraadt 614: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 615: vect[0] = path;
616: source(1, vect);
617: }
1.18 markus 618: (void) closedir(dirp);
1.29 deraadt 619: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 620: (void) response();
1.1 deraadt 621: }
622:
623: void
624: sink(argc, argv)
625: int argc;
626: char *argv[];
627: {
628: static BUF buffer;
629: struct stat stb;
1.18 markus 630: enum {
631: YES, NO, DISPLAYED
632: } wrerr;
1.1 deraadt 633: BUF *bp;
634: off_t i, j;
635: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 636: off_t size;
637: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 638: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 639: struct timeval tv[2];
1.1 deraadt 640:
1.66 stevesk 641: #define atime tv[0]
642: #define mtime tv[1]
1.75 deraadt 643: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 644:
645: setimes = targisdir = 0;
646: mask = umask(0);
647: if (!pflag)
1.18 markus 648: (void) umask(mask);
1.1 deraadt 649: if (argc != 1) {
650: run_err("ambiguous target");
651: exit(1);
652: }
653: targ = *argv;
654: if (targetshouldbedirectory)
655: verifydir(targ);
1.18 markus 656:
1.29 deraadt 657: (void) atomicio(write, remout, "", 1);
1.1 deraadt 658: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
659: targisdir = 1;
660: for (first = 1;; first = 0) {
661: cp = buf;
1.30 deraadt 662: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 663: return;
664: if (*cp++ == '\n')
665: SCREWUP("unexpected <newline>");
666: do {
1.30 deraadt 667: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 668: SCREWUP("lost connection");
669: *cp++ = ch;
670: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
671: *cp = 0;
672:
673: if (buf[0] == '\01' || buf[0] == '\02') {
674: if (iamremote == 0)
1.29 deraadt 675: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 676: buf + 1, strlen(buf + 1));
1.1 deraadt 677: if (buf[0] == '\02')
678: exit(1);
679: ++errs;
680: continue;
681: }
682: if (buf[0] == 'E') {
1.29 deraadt 683: (void) atomicio(write, remout, "", 1);
1.1 deraadt 684: return;
685: }
686: if (ch == '\n')
687: *--cp = 0;
688:
689: cp = buf;
690: if (*cp == 'T') {
691: setimes++;
692: cp++;
1.66 stevesk 693: mtime.tv_sec = strtol(cp, &cp, 10);
694: if (!cp || *cp++ != ' ')
1.1 deraadt 695: SCREWUP("mtime.sec not delimited");
1.66 stevesk 696: mtime.tv_usec = strtol(cp, &cp, 10);
697: if (!cp || *cp++ != ' ')
1.1 deraadt 698: SCREWUP("mtime.usec not delimited");
1.66 stevesk 699: atime.tv_sec = strtol(cp, &cp, 10);
700: if (!cp || *cp++ != ' ')
1.1 deraadt 701: SCREWUP("atime.sec not delimited");
1.66 stevesk 702: atime.tv_usec = strtol(cp, &cp, 10);
703: if (!cp || *cp++ != '\0')
1.1 deraadt 704: SCREWUP("atime.usec not delimited");
1.29 deraadt 705: (void) atomicio(write, remout, "", 1);
1.1 deraadt 706: continue;
707: }
708: if (*cp != 'C' && *cp != 'D') {
709: /*
710: * Check for the case "rcp remote:foo\* local:bar".
711: * In this case, the line "No match." can be returned
712: * by the shell before the rcp command on the remote is
713: * executed so the ^Aerror_message convention isn't
714: * followed.
715: */
716: if (first) {
717: run_err("%s", cp);
718: exit(1);
719: }
720: SCREWUP("expected control record");
721: }
722: mode = 0;
723: for (++cp; cp < buf + 5; cp++) {
724: if (*cp < '0' || *cp > '7')
725: SCREWUP("bad mode");
726: mode = (mode << 3) | (*cp - '0');
727: }
728: if (*cp++ != ' ')
729: SCREWUP("mode not delimited");
730:
1.63 stevesk 731: for (size = 0; isdigit(*cp);)
1.1 deraadt 732: size = size * 10 + (*cp++ - '0');
733: if (*cp++ != ' ')
734: SCREWUP("size not delimited");
735: if (targisdir) {
736: static char *namebuf;
737: static int cursize;
738: size_t need;
739:
740: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 741: if (need > cursize) {
1.58 danh 742: if (namebuf)
743: xfree(namebuf);
1.18 markus 744: namebuf = xmalloc(need);
1.55 deraadt 745: cursize = need;
746: }
747: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 748: *targ ? "/" : "", cp);
1.1 deraadt 749: np = namebuf;
750: } else
751: np = targ;
1.12 aaron 752: curfile = cp;
1.1 deraadt 753: exists = stat(np, &stb) == 0;
754: if (buf[0] == 'D') {
755: int mod_flag = pflag;
756: if (exists) {
757: if (!S_ISDIR(stb.st_mode)) {
758: errno = ENOTDIR;
759: goto bad;
760: }
761: if (pflag)
1.18 markus 762: (void) chmod(np, mode);
1.1 deraadt 763: } else {
1.18 markus 764: /* Handle copying from a read-only
765: directory */
1.1 deraadt 766: mod_flag = 1;
767: if (mkdir(np, mode | S_IRWXU) < 0)
768: goto bad;
769: }
1.58 danh 770: vect[0] = xstrdup(np);
1.1 deraadt 771: sink(1, vect);
772: if (setimes) {
773: setimes = 0;
1.59 deraadt 774: if (utimes(vect[0], tv) < 0)
1.18 markus 775: run_err("%s: set times: %s",
1.59 deraadt 776: vect[0], strerror(errno));
1.1 deraadt 777: }
778: if (mod_flag)
1.59 deraadt 779: (void) chmod(vect[0], mode);
780: if (vect[0])
781: xfree(vect[0]);
1.1 deraadt 782: continue;
783: }
784: omode = mode;
785: mode |= S_IWRITE;
1.71 markus 786: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 787: bad: run_err("%s: %s", np, strerror(errno));
788: continue;
789: }
1.29 deraadt 790: (void) atomicio(write, remout, "", 1);
1.1 deraadt 791: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 792: (void) close(ofd);
1.1 deraadt 793: continue;
794: }
795: cp = bp->buf;
796: wrerr = NO;
1.7 deraadt 797:
798: if (showprogress) {
799: totalbytes = size;
800: progressmeter(-1);
801: }
1.12 aaron 802: statbytes = 0;
1.1 deraadt 803: for (count = i = 0; i < size; i += 4096) {
804: amt = 4096;
805: if (i + amt > size)
806: amt = size - i;
807: count += amt;
808: do {
1.43 markus 809: j = read(remin, cp, amt);
1.78 deraadt 810: if (j == -1 && (errno == EINTR ||
811: errno == EAGAIN)) {
1.43 markus 812: continue;
813: } else if (j <= 0) {
1.1 deraadt 814: run_err("%s", j ? strerror(errno) :
1.63 stevesk 815: "dropped connection");
1.1 deraadt 816: exit(1);
817: }
818: amt -= j;
819: cp += j;
1.18 markus 820: statbytes += j;
1.1 deraadt 821: } while (amt > 0);
822: if (count == bp->cnt) {
823: /* Keep reading so we stay sync'd up. */
824: if (wrerr == NO) {
1.30 deraadt 825: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 826: if (j != count) {
827: wrerr = YES;
1.18 markus 828: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 829: }
830: }
831: count = 0;
832: cp = bp->buf;
833: }
834: }
1.7 deraadt 835: if (showprogress)
836: progressmeter(1);
1.1 deraadt 837: if (count != 0 && wrerr == NO &&
1.30 deraadt 838: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 839: wrerr = YES;
1.18 markus 840: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 841: }
842: if (ftruncate(ofd, size)) {
843: run_err("%s: truncate: %s", np, strerror(errno));
844: wrerr = DISPLAYED;
845: }
846: if (pflag) {
847: if (exists || omode != mode)
848: if (fchmod(ofd, omode))
849: run_err("%s: set mode: %s",
1.63 stevesk 850: np, strerror(errno));
1.1 deraadt 851: } else {
852: if (!exists && omode != mode)
853: if (fchmod(ofd, omode & ~mask))
854: run_err("%s: set mode: %s",
1.63 stevesk 855: np, strerror(errno));
1.1 deraadt 856: }
1.33 provos 857: if (close(ofd) == -1) {
858: wrerr = YES;
859: wrerrno = errno;
860: }
1.18 markus 861: (void) response();
1.1 deraadt 862: if (setimes && wrerr == NO) {
863: setimes = 0;
1.40 markus 864: if (utimes(np, tv) < 0) {
1.1 deraadt 865: run_err("%s: set times: %s",
1.63 stevesk 866: np, strerror(errno));
1.1 deraadt 867: wrerr = DISPLAYED;
868: }
869: }
1.18 markus 870: switch (wrerr) {
1.1 deraadt 871: case YES:
872: run_err("%s: %s", np, strerror(wrerrno));
873: break;
874: case NO:
1.29 deraadt 875: (void) atomicio(write, remout, "", 1);
1.1 deraadt 876: break;
877: case DISPLAYED:
878: break;
879: }
880: }
881: screwup:
882: run_err("protocol error: %s", why);
883: exit(1);
884: }
885:
886: int
887: response()
888: {
889: char ch, *cp, resp, rbuf[2048];
890:
1.30 deraadt 891: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 892: lostconn(0);
893:
894: cp = rbuf;
1.18 markus 895: switch (resp) {
896: case 0: /* ok */
1.1 deraadt 897: return (0);
898: default:
899: *cp++ = resp;
900: /* FALLTHROUGH */
1.18 markus 901: case 1: /* error, followed by error msg */
902: case 2: /* fatal error, "" */
1.1 deraadt 903: do {
1.30 deraadt 904: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 905: lostconn(0);
906: *cp++ = ch;
907: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
908:
909: if (!iamremote)
1.29 deraadt 910: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 911: ++errs;
912: if (resp == 1)
913: return (-1);
914: exit(1);
915: }
916: /* NOTREACHED */
917: }
918:
919: void
920: usage()
921: {
1.34 deraadt 922: (void) fprintf(stderr, "usage: scp "
1.77 mouring 923: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] "
924: "[-o option] f1 f2\n"
1.64 stevesk 925: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 926: exit(1);
927: }
928:
929: void
1.18 markus 930: run_err(const char *fmt,...)
1.1 deraadt 931: {
932: static FILE *fp;
933: va_list ap;
934:
935: ++errs;
936: if (fp == NULL && !(fp = fdopen(remout, "w")))
937: return;
1.18 markus 938: (void) fprintf(fp, "%c", 0x01);
939: (void) fprintf(fp, "scp: ");
1.73 markus 940: va_start(ap, fmt);
1.18 markus 941: (void) vfprintf(fp, fmt, ap);
1.73 markus 942: va_end(ap);
1.18 markus 943: (void) fprintf(fp, "\n");
944: (void) fflush(fp);
945:
946: if (!iamremote) {
1.73 markus 947: va_start(ap, fmt);
1.18 markus 948: vfprintf(stderr, fmt, ap);
1.73 markus 949: va_end(ap);
1.18 markus 950: fprintf(stderr, "\n");
951: }
1.1 deraadt 952: }
953:
954: void
955: verifydir(cp)
956: char *cp;
957: {
958: struct stat stb;
959:
960: if (!stat(cp, &stb)) {
961: if (S_ISDIR(stb.st_mode))
962: return;
963: errno = ENOTDIR;
964: }
965: run_err("%s: %s", cp, strerror(errno));
966: exit(1);
967: }
968:
969: int
970: okname(cp0)
971: char *cp0;
972: {
973: int c;
974: char *cp;
975:
976: cp = cp0;
977: do {
1.75 deraadt 978: c = (int)*cp;
1.1 deraadt 979: if (c & 0200)
980: goto bad;
1.46 markus 981: if (!isalpha(c) && !isdigit(c) &&
982: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 983: goto bad;
984: } while (*++cp);
985: return (1);
986:
1.25 markus 987: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 988: return (0);
989: }
990:
991: BUF *
992: allocbuf(bp, fd, blksize)
993: BUF *bp;
994: int fd, blksize;
995: {
996: size_t size;
997: struct stat stb;
998:
999: if (fstat(fd, &stb) < 0) {
1000: run_err("fstat: %s", strerror(errno));
1001: return (0);
1002: }
1.18 markus 1003: if (stb.st_blksize == 0)
1004: size = blksize;
1005: else
1006: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1007: stb.st_blksize;
1.1 deraadt 1008: if (bp->cnt >= size)
1009: return (bp);
1.18 markus 1010: if (bp->buf == NULL)
1011: bp->buf = xmalloc(size);
1012: else
1013: bp->buf = xrealloc(bp->buf, size);
1.81 markus 1014: memset(bp->buf, 0, size);
1.1 deraadt 1015: bp->cnt = size;
1016: return (bp);
1017: }
1018:
1019: void
1020: lostconn(signo)
1021: int signo;
1022: {
1023: if (!iamremote)
1.74 markus 1024: write(STDERR_FILENO, "lost connection\n", 16);
1025: if (signo)
1026: _exit(1);
1027: else
1028: exit(1);
1.1 deraadt 1029: }
1.4 aaron 1030:
1.76 itojun 1031: static void
1.26 markus 1032: updateprogressmeter(int ignore)
1.4 aaron 1033: {
1.9 deraadt 1034: int save_errno = errno;
1035:
1.4 aaron 1036: progressmeter(0);
1.79 stevesk 1037: signal(SIGALRM, updateprogressmeter);
1038: alarm(PROGRESSTIME);
1.9 deraadt 1039: errno = save_errno;
1.4 aaron 1040: }
1041:
1.76 itojun 1042: static int
1.56 itojun 1043: foregroundproc(void)
1.16 deraadt 1044: {
1045: static pid_t pgrp = -1;
1046: int ctty_pgrp;
1047:
1048: if (pgrp == -1)
1049: pgrp = getpgrp();
1050:
1.18 markus 1051: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1052: ctty_pgrp == pgrp));
1.16 deraadt 1053: }
1054:
1.8 deraadt 1055: void
1056: progressmeter(int flag)
1.4 aaron 1057: {
1058: static const char prefixes[] = " KMGTP";
1059: static struct timeval lastupdate;
1.11 aaron 1060: static off_t lastsize;
1.4 aaron 1061: struct timeval now, td, wait;
1062: off_t cursize, abbrevsize;
1063: double elapsed;
1064: int ratio, barlength, i, remaining;
1065: char buf[256];
1066:
1067: if (flag == -1) {
1.18 markus 1068: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1069: lastupdate = start;
1.11 aaron 1070: lastsize = 0;
1.18 markus 1071: }
1.16 deraadt 1072: if (foregroundproc() == 0)
1073: return;
1074:
1.18 markus 1075: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1076: cursize = statbytes;
1.13 aaron 1077: if (totalbytes != 0) {
1.21 markus 1078: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1079: ratio = MAX(ratio, 0);
1080: ratio = MIN(ratio, 100);
1.18 markus 1081: } else
1.13 aaron 1082: ratio = 100;
1083:
1.18 markus 1084: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1085:
1.11 aaron 1086: barlength = getttywidth() - 51;
1.4 aaron 1087: if (barlength > 0) {
1088: i = barlength * ratio / 100;
1089: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1090: "|%.*s%*s|", i,
1.78 deraadt 1091: "***************************************"
1092: "***************************************"
1093: "***************************************"
1094: "***************************************",
1.35 deraadt 1095: barlength - i, "");
1.4 aaron 1096: }
1097: i = 0;
1098: abbrevsize = cursize;
1099: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1100: i++;
1101: abbrevsize >>= 10;
1102: }
1.54 itojun 1103: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1104: (unsigned long long) abbrevsize, prefixes[i],
1105: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1106:
1107: timersub(&now, &lastupdate, &wait);
1108: if (cursize > lastsize) {
1109: lastupdate = now;
1110: lastsize = cursize;
1111: if (wait.tv_sec >= STALLTIME) {
1112: start.tv_sec += wait.tv_sec;
1113: start.tv_usec += wait.tv_usec;
1114: }
1115: wait.tv_sec = 0;
1116: }
1117: timersub(&now, &start, &td);
1.6 aaron 1118: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1119:
1.44 deraadt 1120: if (flag != 1 &&
1121: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1122: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1123: " --:-- ETA");
1.4 aaron 1124: } else if (wait.tv_sec >= STALLTIME) {
1125: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1126: " - stalled -");
1.4 aaron 1127: } else {
1.28 deraadt 1128: if (flag != 1)
1.44 deraadt 1129: remaining = (int)(totalbytes / (statbytes / elapsed) -
1130: elapsed);
1.28 deraadt 1131: else
1132: remaining = elapsed;
1133:
1.14 aaron 1134: i = remaining / 3600;
1.4 aaron 1135: if (i)
1136: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1137: "%2d:", i);
1.4 aaron 1138: else
1139: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1140: " ");
1.4 aaron 1141: i = remaining % 3600;
1142: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1143: "%02d:%02d%s", i / 60, i % 60,
1144: (flag != 1) ? " ETA" : " ");
1.4 aaron 1145: }
1.10 deraadt 1146: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1147:
1148: if (flag == -1) {
1.26 markus 1149: signal(SIGALRM, updateprogressmeter);
1.79 stevesk 1150: alarm(PROGRESSTIME);
1.4 aaron 1151: } else if (flag == 1) {
1.79 stevesk 1152: alarm(0);
1.29 deraadt 1153: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1154: statbytes = 0;
1.4 aaron 1155: }
1156: }
1157:
1.8 deraadt 1158: int
1159: getttywidth(void)
1.4 aaron 1160: {
1161: struct winsize winsize;
1162:
1163: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1164: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1165: else
1.18 markus 1166: return (80);
1.4 aaron 1167: }
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