Annotation of src/usr.bin/ssh/scp.c, Revision 1.81
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"
1.81 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.80 2001/08/13 23:38:54 stevesk 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");
224: addargs(&args, "-oFallBackToRsh no");
1.41 markus 225:
1.1 deraadt 226: fflag = tflag = 0;
1.49 markus 227: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 228: switch (ch) {
229: /* User-visible flags. */
1.23 markus 230: case '4':
1.41 markus 231: case '6':
232: case 'C':
1.70 mouring 233: addargs(&args, "-%c", ch);
1.41 markus 234: break;
235: case 'o':
236: case 'c':
237: case 'i':
1.70 mouring 238: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 239: break;
1.41 markus 240: case 'P':
1.70 mouring 241: addargs(&args, "-p%s", optarg);
1.41 markus 242: break;
243: case 'B':
1.70 mouring 244: addargs(&args, "-oBatchmode yes");
1.23 markus 245: break;
1.1 deraadt 246: case 'p':
247: pflag = 1;
248: break;
249: case 'r':
250: iamrecursive = 1;
251: break;
1.34 deraadt 252: case 'S':
1.41 markus 253: ssh_program = xstrdup(optarg);
254: break;
255: case 'v':
1.72 markus 256: addargs(&args, "-v");
1.41 markus 257: verbose_mode = 1;
258: break;
259: case 'q':
260: showprogress = 0;
1.34 deraadt 261: break;
262:
1.18 markus 263: /* Server options. */
1.1 deraadt 264: case 'd':
265: targetshouldbedirectory = 1;
266: break;
1.18 markus 267: case 'f': /* "from" */
1.1 deraadt 268: iamremote = 1;
269: fflag = 1;
270: break;
1.18 markus 271: case 't': /* "to" */
1.1 deraadt 272: iamremote = 1;
273: tflag = 1;
274: break;
275: default:
276: usage();
277: }
278: argc -= optind;
279: argv += optind;
280:
281: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 282: fatal("unknown user %d", (int) userid);
1.1 deraadt 283:
1.18 markus 284: if (!isatty(STDERR_FILENO))
1.7 deraadt 285: showprogress = 0;
286:
1.1 deraadt 287: remin = STDIN_FILENO;
288: remout = STDOUT_FILENO;
289:
1.52 stevesk 290: if (fflag) {
1.18 markus 291: /* Follow "protocol", send data. */
292: (void) response();
1.1 deraadt 293: source(argc, argv);
294: exit(errs != 0);
295: }
1.18 markus 296: if (tflag) {
297: /* Receive data. */
1.1 deraadt 298: sink(argc, argv);
299: exit(errs != 0);
300: }
301: if (argc < 2)
302: usage();
303: if (argc > 2)
304: targetshouldbedirectory = 1;
305:
306: remin = remout = -1;
307: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 308: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
309: verbose_mode ? " -v" : "",
1.35 deraadt 310: iamrecursive ? " -r" : "", pflag ? " -p" : "",
311: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 312:
1.18 markus 313: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 314:
315: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
316: toremote(targ, argc, argv);
317: else {
1.18 markus 318: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 319: if (targetshouldbedirectory)
320: verifydir(argv[argc - 1]);
321: }
322: exit(errs != 0);
323: }
324:
325: void
326: toremote(targ, argc, argv)
327: char *targ, *argv[];
328: int argc;
329: {
330: int i, len;
331: char *bp, *host, *src, *suser, *thost, *tuser;
332:
333: *targ++ = 0;
334: if (*targ == 0)
335: targ = ".";
336:
337: if ((thost = strchr(argv[argc - 1], '@'))) {
338: /* user@host */
339: *thost++ = 0;
340: tuser = argv[argc - 1];
341: if (*tuser == '\0')
342: tuser = NULL;
343: else if (!okname(tuser))
344: exit(1);
345: } else {
346: thost = argv[argc - 1];
347: tuser = NULL;
348: }
349:
350: for (i = 0; i < argc - 1; i++) {
351: src = colon(argv[i]);
1.18 markus 352: if (src) { /* remote to remote */
1.1 deraadt 353: *src++ = 0;
354: if (*src == 0)
355: src = ".";
356: host = strchr(argv[i], '@');
1.34 deraadt 357: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 358: strlen(src) + (tuser ? strlen(tuser) : 0) +
359: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 360: bp = xmalloc(len);
1.1 deraadt 361: if (host) {
362: *host++ = 0;
1.23 markus 363: host = cleanhostname(host);
1.1 deraadt 364: suser = argv[i];
365: if (*suser == '\0')
366: suser = pwd->pw_name;
367: else if (!okname(suser))
368: continue;
1.55 deraadt 369: snprintf(bp, len,
370: "%s%s -x -o'FallBackToRsh no' -n "
371: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 372: ssh_program, verbose_mode ? " -v" : "",
373: suser, host, cmd, src,
374: tuser ? tuser : "", tuser ? "@" : "",
375: thost, targ);
1.23 markus 376: } else {
377: host = cleanhostname(argv[i]);
1.55 deraadt 378: snprintf(bp, len,
379: "exec %s%s -x -o'FallBackToRsh no' -n %s "
380: "%s %s '%s%s%s:%s'",
1.44 deraadt 381: ssh_program, verbose_mode ? " -v" : "",
382: host, cmd, src,
383: tuser ? tuser : "", tuser ? "@" : "",
384: thost, targ);
1.23 markus 385: }
1.18 markus 386: if (verbose_mode)
387: fprintf(stderr, "Executing: %s\n", bp);
388: (void) system(bp);
389: (void) xfree(bp);
390: } else { /* local to remote */
1.1 deraadt 391: if (remin == -1) {
392: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 393: bp = xmalloc(len);
1.55 deraadt 394: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 395: host = cleanhostname(thost);
1.35 deraadt 396: if (do_cmd(host, tuser, bp, &remin,
397: &remout, argc) < 0)
1.18 markus 398: exit(1);
1.1 deraadt 399: if (response() < 0)
400: exit(1);
1.18 markus 401: (void) xfree(bp);
1.1 deraadt 402: }
1.18 markus 403: source(1, argv + i);
1.1 deraadt 404: }
405: }
406: }
407:
408: void
409: tolocal(argc, argv)
410: int argc;
411: char *argv[];
412: {
413: int i, len;
414: char *bp, *host, *src, *suser;
415:
416: for (i = 0; i < argc - 1; i++) {
1.18 markus 417: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 418: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 419: strlen(argv[argc - 1]) + 20;
1.1 deraadt 420: bp = xmalloc(len);
1.55 deraadt 421: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 422: iamrecursive ? " -r" : "", pflag ? " -p" : "",
423: argv[i], argv[argc - 1]);
1.18 markus 424: if (verbose_mode)
425: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 426: if (system(bp))
427: ++errs;
1.18 markus 428: (void) xfree(bp);
1.1 deraadt 429: continue;
430: }
431: *src++ = 0;
432: if (*src == 0)
433: src = ".";
434: if ((host = strchr(argv[i], '@')) == NULL) {
435: host = argv[i];
436: suser = NULL;
437: } else {
438: *host++ = 0;
439: suser = argv[i];
440: if (*suser == '\0')
441: suser = pwd->pw_name;
442: else if (!okname(suser))
443: continue;
444: }
1.23 markus 445: host = cleanhostname(host);
1.1 deraadt 446: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 447: bp = xmalloc(len);
1.55 deraadt 448: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 449: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 450: (void) xfree(bp);
451: ++errs;
452: continue;
1.1 deraadt 453: }
1.18 markus 454: xfree(bp);
1.1 deraadt 455: sink(1, argv + argc - 1);
1.18 markus 456: (void) close(remin);
1.1 deraadt 457: remin = remout = -1;
458: }
459: }
460:
461: void
462: source(argc, argv)
463: int argc;
464: char *argv[];
465: {
466: struct stat stb;
467: static BUF buffer;
468: BUF *bp;
1.68 markus 469: off_t i, amt, result;
470: int fd, haderr, indx;
1.1 deraadt 471: char *last, *name, buf[2048];
1.65 deraadt 472: int len;
1.1 deraadt 473:
474: for (indx = 0; indx < argc; ++indx) {
1.18 markus 475: name = argv[indx];
1.11 aaron 476: statbytes = 0;
1.65 deraadt 477: len = strlen(name);
478: while (len > 1 && name[len-1] == '/')
479: name[--len] = '\0';
1.1 deraadt 480: if ((fd = open(name, O_RDONLY, 0)) < 0)
481: goto syserr;
482: if (fstat(fd, &stb) < 0) {
483: syserr: run_err("%s: %s", name, strerror(errno));
484: goto next;
485: }
486: switch (stb.st_mode & S_IFMT) {
487: case S_IFREG:
488: break;
489: case S_IFDIR:
490: if (iamrecursive) {
491: rsource(name, &stb);
492: goto next;
493: }
494: /* FALLTHROUGH */
495: default:
496: run_err("%s: not a regular file", name);
497: goto next;
498: }
499: if ((last = strrchr(name, '/')) == NULL)
500: last = name;
501: else
502: ++last;
1.11 aaron 503: curfile = last;
1.1 deraadt 504: if (pflag) {
505: /*
506: * Make it compatible with possible future
507: * versions expecting microseconds.
508: */
1.55 deraadt 509: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 510: (u_long) stb.st_mtime,
511: (u_long) stb.st_atime);
1.29 deraadt 512: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 513: if (response() < 0)
514: goto next;
515: }
516: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 517: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 518: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 519: (long long)stb.st_size, last);
1.18 markus 520: if (verbose_mode) {
521: fprintf(stderr, "Sending file modes: %s", buf);
522: fflush(stderr);
523: }
1.29 deraadt 524: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 525: if (response() < 0)
526: goto next;
527: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 528: next: (void) close(fd);
1.1 deraadt 529: continue;
530: }
1.12 aaron 531: if (showprogress) {
532: totalbytes = stb.st_size;
1.6 aaron 533: progressmeter(-1);
1.12 aaron 534: }
1.1 deraadt 535: /* Keep writing after an error so that we stay sync'd up. */
536: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
537: amt = bp->cnt;
538: if (i + amt > stb.st_size)
539: amt = stb.st_size - i;
540: if (!haderr) {
1.30 deraadt 541: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 542: if (result != amt)
543: haderr = result >= 0 ? EIO : errno;
544: }
545: if (haderr)
1.29 deraadt 546: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 547: else {
1.29 deraadt 548: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 549: if (result != amt)
550: haderr = result >= 0 ? EIO : errno;
1.4 aaron 551: statbytes += result;
1.1 deraadt 552: }
553: }
1.18 markus 554: if (showprogress)
1.6 aaron 555: progressmeter(1);
1.4 aaron 556:
1.1 deraadt 557: if (close(fd) < 0 && !haderr)
558: haderr = errno;
559: if (!haderr)
1.29 deraadt 560: (void) atomicio(write, remout, "", 1);
1.1 deraadt 561: else
562: run_err("%s: %s", name, strerror(haderr));
1.18 markus 563: (void) response();
1.1 deraadt 564: }
565: }
566:
567: void
568: rsource(name, statp)
569: char *name;
570: struct stat *statp;
571: {
572: DIR *dirp;
573: struct dirent *dp;
574: char *last, *vect[1], path[1100];
575:
576: if (!(dirp = opendir(name))) {
577: run_err("%s: %s", name, strerror(errno));
578: return;
579: }
580: last = strrchr(name, '/');
581: if (last == 0)
582: last = name;
583: else
584: last++;
585: if (pflag) {
1.55 deraadt 586: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 587: (u_long) statp->st_mtime,
588: (u_long) statp->st_atime);
1.29 deraadt 589: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 590: if (response() < 0) {
591: closedir(dirp);
592: return;
593: }
594: }
1.55 deraadt 595: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 596: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 597: if (verbose_mode)
598: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 599: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 600: if (response() < 0) {
601: closedir(dirp);
602: return;
603: }
1.63 stevesk 604: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 605: if (dp->d_ino == 0)
606: continue;
607: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
608: continue;
609: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
610: run_err("%s/%s: name too long", name, dp->d_name);
611: continue;
612: }
1.55 deraadt 613: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 614: vect[0] = path;
615: source(1, vect);
616: }
1.18 markus 617: (void) closedir(dirp);
1.29 deraadt 618: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 619: (void) response();
1.1 deraadt 620: }
621:
622: void
623: sink(argc, argv)
624: int argc;
625: char *argv[];
626: {
627: static BUF buffer;
628: struct stat stb;
1.18 markus 629: enum {
630: YES, NO, DISPLAYED
631: } wrerr;
1.1 deraadt 632: BUF *bp;
633: off_t i, j;
634: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 635: off_t size;
636: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 637: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 638: struct timeval tv[2];
1.1 deraadt 639:
1.66 stevesk 640: #define atime tv[0]
641: #define mtime tv[1]
1.75 deraadt 642: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 643:
644: setimes = targisdir = 0;
645: mask = umask(0);
646: if (!pflag)
1.18 markus 647: (void) umask(mask);
1.1 deraadt 648: if (argc != 1) {
649: run_err("ambiguous target");
650: exit(1);
651: }
652: targ = *argv;
653: if (targetshouldbedirectory)
654: verifydir(targ);
1.18 markus 655:
1.29 deraadt 656: (void) atomicio(write, remout, "", 1);
1.1 deraadt 657: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
658: targisdir = 1;
659: for (first = 1;; first = 0) {
660: cp = buf;
1.30 deraadt 661: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 662: return;
663: if (*cp++ == '\n')
664: SCREWUP("unexpected <newline>");
665: do {
1.30 deraadt 666: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 667: SCREWUP("lost connection");
668: *cp++ = ch;
669: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
670: *cp = 0;
671:
672: if (buf[0] == '\01' || buf[0] == '\02') {
673: if (iamremote == 0)
1.29 deraadt 674: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 675: buf + 1, strlen(buf + 1));
1.1 deraadt 676: if (buf[0] == '\02')
677: exit(1);
678: ++errs;
679: continue;
680: }
681: if (buf[0] == 'E') {
1.29 deraadt 682: (void) atomicio(write, remout, "", 1);
1.1 deraadt 683: return;
684: }
685: if (ch == '\n')
686: *--cp = 0;
687:
688: cp = buf;
689: if (*cp == 'T') {
690: setimes++;
691: cp++;
1.66 stevesk 692: mtime.tv_sec = strtol(cp, &cp, 10);
693: if (!cp || *cp++ != ' ')
1.1 deraadt 694: SCREWUP("mtime.sec not delimited");
1.66 stevesk 695: mtime.tv_usec = strtol(cp, &cp, 10);
696: if (!cp || *cp++ != ' ')
1.1 deraadt 697: SCREWUP("mtime.usec not delimited");
1.66 stevesk 698: atime.tv_sec = strtol(cp, &cp, 10);
699: if (!cp || *cp++ != ' ')
1.1 deraadt 700: SCREWUP("atime.sec not delimited");
1.66 stevesk 701: atime.tv_usec = strtol(cp, &cp, 10);
702: if (!cp || *cp++ != '\0')
1.1 deraadt 703: SCREWUP("atime.usec not delimited");
1.29 deraadt 704: (void) atomicio(write, remout, "", 1);
1.1 deraadt 705: continue;
706: }
707: if (*cp != 'C' && *cp != 'D') {
708: /*
709: * Check for the case "rcp remote:foo\* local:bar".
710: * In this case, the line "No match." can be returned
711: * by the shell before the rcp command on the remote is
712: * executed so the ^Aerror_message convention isn't
713: * followed.
714: */
715: if (first) {
716: run_err("%s", cp);
717: exit(1);
718: }
719: SCREWUP("expected control record");
720: }
721: mode = 0;
722: for (++cp; cp < buf + 5; cp++) {
723: if (*cp < '0' || *cp > '7')
724: SCREWUP("bad mode");
725: mode = (mode << 3) | (*cp - '0');
726: }
727: if (*cp++ != ' ')
728: SCREWUP("mode not delimited");
729:
1.63 stevesk 730: for (size = 0; isdigit(*cp);)
1.1 deraadt 731: size = size * 10 + (*cp++ - '0');
732: if (*cp++ != ' ')
733: SCREWUP("size not delimited");
734: if (targisdir) {
735: static char *namebuf;
736: static int cursize;
737: size_t need;
738:
739: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 740: if (need > cursize) {
1.58 danh 741: if (namebuf)
742: xfree(namebuf);
1.18 markus 743: namebuf = xmalloc(need);
1.55 deraadt 744: cursize = need;
745: }
746: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 747: *targ ? "/" : "", cp);
1.1 deraadt 748: np = namebuf;
749: } else
750: np = targ;
1.12 aaron 751: curfile = cp;
1.1 deraadt 752: exists = stat(np, &stb) == 0;
753: if (buf[0] == 'D') {
754: int mod_flag = pflag;
755: if (exists) {
756: if (!S_ISDIR(stb.st_mode)) {
757: errno = ENOTDIR;
758: goto bad;
759: }
760: if (pflag)
1.18 markus 761: (void) chmod(np, mode);
1.1 deraadt 762: } else {
1.18 markus 763: /* Handle copying from a read-only
764: directory */
1.1 deraadt 765: mod_flag = 1;
766: if (mkdir(np, mode | S_IRWXU) < 0)
767: goto bad;
768: }
1.58 danh 769: vect[0] = xstrdup(np);
1.1 deraadt 770: sink(1, vect);
771: if (setimes) {
772: setimes = 0;
1.59 deraadt 773: if (utimes(vect[0], tv) < 0)
1.18 markus 774: run_err("%s: set times: %s",
1.59 deraadt 775: vect[0], strerror(errno));
1.1 deraadt 776: }
777: if (mod_flag)
1.59 deraadt 778: (void) chmod(vect[0], mode);
779: if (vect[0])
780: xfree(vect[0]);
1.1 deraadt 781: continue;
782: }
783: omode = mode;
784: mode |= S_IWRITE;
1.71 markus 785: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 786: bad: run_err("%s: %s", np, strerror(errno));
787: continue;
788: }
1.29 deraadt 789: (void) atomicio(write, remout, "", 1);
1.1 deraadt 790: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 791: (void) close(ofd);
1.1 deraadt 792: continue;
793: }
794: cp = bp->buf;
795: wrerr = NO;
1.7 deraadt 796:
797: if (showprogress) {
798: totalbytes = size;
799: progressmeter(-1);
800: }
1.12 aaron 801: statbytes = 0;
1.1 deraadt 802: for (count = i = 0; i < size; i += 4096) {
803: amt = 4096;
804: if (i + amt > size)
805: amt = size - i;
806: count += amt;
807: do {
1.43 markus 808: j = read(remin, cp, amt);
1.78 deraadt 809: if (j == -1 && (errno == EINTR ||
810: errno == EAGAIN)) {
1.43 markus 811: continue;
812: } else if (j <= 0) {
1.1 deraadt 813: run_err("%s", j ? strerror(errno) :
1.63 stevesk 814: "dropped connection");
1.1 deraadt 815: exit(1);
816: }
817: amt -= j;
818: cp += j;
1.18 markus 819: statbytes += j;
1.1 deraadt 820: } while (amt > 0);
821: if (count == bp->cnt) {
822: /* Keep reading so we stay sync'd up. */
823: if (wrerr == NO) {
1.30 deraadt 824: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 825: if (j != count) {
826: wrerr = YES;
1.18 markus 827: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 828: }
829: }
830: count = 0;
831: cp = bp->buf;
832: }
833: }
1.7 deraadt 834: if (showprogress)
835: progressmeter(1);
1.1 deraadt 836: if (count != 0 && wrerr == NO &&
1.30 deraadt 837: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 838: wrerr = YES;
1.18 markus 839: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 840: }
841: if (ftruncate(ofd, size)) {
842: run_err("%s: truncate: %s", np, strerror(errno));
843: wrerr = DISPLAYED;
844: }
845: if (pflag) {
846: if (exists || omode != mode)
847: if (fchmod(ofd, omode))
848: run_err("%s: set mode: %s",
1.63 stevesk 849: np, strerror(errno));
1.1 deraadt 850: } else {
851: if (!exists && omode != mode)
852: if (fchmod(ofd, omode & ~mask))
853: run_err("%s: set mode: %s",
1.63 stevesk 854: np, strerror(errno));
1.1 deraadt 855: }
1.33 provos 856: if (close(ofd) == -1) {
857: wrerr = YES;
858: wrerrno = errno;
859: }
1.18 markus 860: (void) response();
1.1 deraadt 861: if (setimes && wrerr == NO) {
862: setimes = 0;
1.40 markus 863: if (utimes(np, tv) < 0) {
1.1 deraadt 864: run_err("%s: set times: %s",
1.63 stevesk 865: np, strerror(errno));
1.1 deraadt 866: wrerr = DISPLAYED;
867: }
868: }
1.18 markus 869: switch (wrerr) {
1.1 deraadt 870: case YES:
871: run_err("%s: %s", np, strerror(wrerrno));
872: break;
873: case NO:
1.29 deraadt 874: (void) atomicio(write, remout, "", 1);
1.1 deraadt 875: break;
876: case DISPLAYED:
877: break;
878: }
879: }
880: screwup:
881: run_err("protocol error: %s", why);
882: exit(1);
883: }
884:
885: int
886: response()
887: {
888: char ch, *cp, resp, rbuf[2048];
889:
1.30 deraadt 890: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 891: lostconn(0);
892:
893: cp = rbuf;
1.18 markus 894: switch (resp) {
895: case 0: /* ok */
1.1 deraadt 896: return (0);
897: default:
898: *cp++ = resp;
899: /* FALLTHROUGH */
1.18 markus 900: case 1: /* error, followed by error msg */
901: case 2: /* fatal error, "" */
1.1 deraadt 902: do {
1.30 deraadt 903: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 904: lostconn(0);
905: *cp++ = ch;
906: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
907:
908: if (!iamremote)
1.29 deraadt 909: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 910: ++errs;
911: if (resp == 1)
912: return (-1);
913: exit(1);
914: }
915: /* NOTREACHED */
916: }
917:
918: void
919: usage()
920: {
1.34 deraadt 921: (void) fprintf(stderr, "usage: scp "
1.77 mouring 922: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] "
923: "[-o option] f1 f2\n"
1.64 stevesk 924: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 925: exit(1);
926: }
927:
928: void
1.18 markus 929: run_err(const char *fmt,...)
1.1 deraadt 930: {
931: static FILE *fp;
932: va_list ap;
933:
934: ++errs;
935: if (fp == NULL && !(fp = fdopen(remout, "w")))
936: return;
1.18 markus 937: (void) fprintf(fp, "%c", 0x01);
938: (void) fprintf(fp, "scp: ");
1.73 markus 939: va_start(ap, fmt);
1.18 markus 940: (void) vfprintf(fp, fmt, ap);
1.73 markus 941: va_end(ap);
1.18 markus 942: (void) fprintf(fp, "\n");
943: (void) fflush(fp);
944:
945: if (!iamremote) {
1.73 markus 946: va_start(ap, fmt);
1.18 markus 947: vfprintf(stderr, fmt, ap);
1.73 markus 948: va_end(ap);
1.18 markus 949: fprintf(stderr, "\n");
950: }
1.1 deraadt 951: }
952:
953: void
954: verifydir(cp)
955: char *cp;
956: {
957: struct stat stb;
958:
959: if (!stat(cp, &stb)) {
960: if (S_ISDIR(stb.st_mode))
961: return;
962: errno = ENOTDIR;
963: }
964: run_err("%s: %s", cp, strerror(errno));
965: exit(1);
966: }
967:
968: int
969: okname(cp0)
970: char *cp0;
971: {
972: int c;
973: char *cp;
974:
975: cp = cp0;
976: do {
1.75 deraadt 977: c = (int)*cp;
1.1 deraadt 978: if (c & 0200)
979: goto bad;
1.46 markus 980: if (!isalpha(c) && !isdigit(c) &&
981: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 982: goto bad;
983: } while (*++cp);
984: return (1);
985:
1.25 markus 986: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 987: return (0);
988: }
989:
990: BUF *
991: allocbuf(bp, fd, blksize)
992: BUF *bp;
993: int fd, blksize;
994: {
995: size_t size;
996: struct stat stb;
997:
998: if (fstat(fd, &stb) < 0) {
999: run_err("fstat: %s", strerror(errno));
1000: return (0);
1001: }
1.18 markus 1002: if (stb.st_blksize == 0)
1003: size = blksize;
1004: else
1005: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1006: stb.st_blksize;
1.1 deraadt 1007: if (bp->cnt >= size)
1008: return (bp);
1.18 markus 1009: if (bp->buf == NULL)
1010: bp->buf = xmalloc(size);
1011: else
1012: bp->buf = xrealloc(bp->buf, size);
1.81 ! markus 1013: memset(bp->buf, 0, size);
1.1 deraadt 1014: bp->cnt = size;
1015: return (bp);
1016: }
1017:
1018: void
1019: lostconn(signo)
1020: int signo;
1021: {
1022: if (!iamremote)
1.74 markus 1023: write(STDERR_FILENO, "lost connection\n", 16);
1024: if (signo)
1025: _exit(1);
1026: else
1027: exit(1);
1.1 deraadt 1028: }
1.4 aaron 1029:
1.76 itojun 1030: static void
1.26 markus 1031: updateprogressmeter(int ignore)
1.4 aaron 1032: {
1.9 deraadt 1033: int save_errno = errno;
1034:
1.4 aaron 1035: progressmeter(0);
1.79 stevesk 1036: signal(SIGALRM, updateprogressmeter);
1037: alarm(PROGRESSTIME);
1.9 deraadt 1038: errno = save_errno;
1.4 aaron 1039: }
1040:
1.76 itojun 1041: static int
1.56 itojun 1042: foregroundproc(void)
1.16 deraadt 1043: {
1044: static pid_t pgrp = -1;
1045: int ctty_pgrp;
1046:
1047: if (pgrp == -1)
1048: pgrp = getpgrp();
1049:
1.18 markus 1050: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1051: ctty_pgrp == pgrp));
1.16 deraadt 1052: }
1053:
1.8 deraadt 1054: void
1055: progressmeter(int flag)
1.4 aaron 1056: {
1057: static const char prefixes[] = " KMGTP";
1058: static struct timeval lastupdate;
1.11 aaron 1059: static off_t lastsize;
1.4 aaron 1060: struct timeval now, td, wait;
1061: off_t cursize, abbrevsize;
1062: double elapsed;
1063: int ratio, barlength, i, remaining;
1064: char buf[256];
1065:
1066: if (flag == -1) {
1.18 markus 1067: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1068: lastupdate = start;
1.11 aaron 1069: lastsize = 0;
1.18 markus 1070: }
1.16 deraadt 1071: if (foregroundproc() == 0)
1072: return;
1073:
1.18 markus 1074: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1075: cursize = statbytes;
1.13 aaron 1076: if (totalbytes != 0) {
1.21 markus 1077: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1078: ratio = MAX(ratio, 0);
1079: ratio = MIN(ratio, 100);
1.18 markus 1080: } else
1.13 aaron 1081: ratio = 100;
1082:
1.18 markus 1083: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1084:
1.11 aaron 1085: barlength = getttywidth() - 51;
1.4 aaron 1086: if (barlength > 0) {
1087: i = barlength * ratio / 100;
1088: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1089: "|%.*s%*s|", i,
1.78 deraadt 1090: "***************************************"
1091: "***************************************"
1092: "***************************************"
1093: "***************************************",
1.35 deraadt 1094: barlength - i, "");
1.4 aaron 1095: }
1096: i = 0;
1097: abbrevsize = cursize;
1098: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1099: i++;
1100: abbrevsize >>= 10;
1101: }
1.54 itojun 1102: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1103: (unsigned long long) abbrevsize, prefixes[i],
1104: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1105:
1106: timersub(&now, &lastupdate, &wait);
1107: if (cursize > lastsize) {
1108: lastupdate = now;
1109: lastsize = cursize;
1110: if (wait.tv_sec >= STALLTIME) {
1111: start.tv_sec += wait.tv_sec;
1112: start.tv_usec += wait.tv_usec;
1113: }
1114: wait.tv_sec = 0;
1115: }
1116: timersub(&now, &start, &td);
1.6 aaron 1117: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1118:
1.44 deraadt 1119: if (flag != 1 &&
1120: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1121: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1122: " --:-- ETA");
1.4 aaron 1123: } else if (wait.tv_sec >= STALLTIME) {
1124: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1125: " - stalled -");
1.4 aaron 1126: } else {
1.28 deraadt 1127: if (flag != 1)
1.44 deraadt 1128: remaining = (int)(totalbytes / (statbytes / elapsed) -
1129: elapsed);
1.28 deraadt 1130: else
1131: remaining = elapsed;
1132:
1.14 aaron 1133: i = remaining / 3600;
1.4 aaron 1134: if (i)
1135: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1136: "%2d:", i);
1.4 aaron 1137: else
1138: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1139: " ");
1.4 aaron 1140: i = remaining % 3600;
1141: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1142: "%02d:%02d%s", i / 60, i % 60,
1143: (flag != 1) ? " ETA" : " ");
1.4 aaron 1144: }
1.10 deraadt 1145: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1146:
1147: if (flag == -1) {
1.26 markus 1148: signal(SIGALRM, updateprogressmeter);
1.79 stevesk 1149: alarm(PROGRESSTIME);
1.4 aaron 1150: } else if (flag == 1) {
1.79 stevesk 1151: alarm(0);
1.29 deraadt 1152: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1153: statbytes = 0;
1.4 aaron 1154: }
1155: }
1156:
1.8 deraadt 1157: int
1158: getttywidth(void)
1.4 aaron 1159: {
1160: struct winsize winsize;
1161:
1162: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1163: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1164: else
1.18 markus 1165: return (80);
1.4 aaron 1166: }