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1.1 deraadt 1: /*
2:
3: scp - secure remote copy. This is basically patched BSD rcp which uses ssh
4: to do the data transfer (instead of using rcmd).
5:
6: NOTE: This version should NOT be suid root. (This uses ssh to do the transfer
7: and ssh has the necessary privileges.)
8:
9: 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10:
11: */
12:
13: /*
14: * Copyright (c) 1983, 1990, 1992, 1993, 1995
15: * The Regents of the University of California. All rights reserved.
16: *
17: * Redistribution and use in source and binary forms, with or without
18: * modification, are permitted provided that the following conditions
19: * are met:
20: * 1. Redistributions of source code must retain the above copyright
21: * notice, this list of conditions and the following disclaimer.
22: * 2. Redistributions in binary form must reproduce the above copyright
23: * notice, this list of conditions and the following disclaimer in the
24: * documentation and/or other materials provided with the distribution.
25: * 3. All advertising materials mentioning features or use of this software
26: * must display the following acknowledgement:
27: * This product includes software developed by the University of
28: * California, Berkeley and its contributors.
29: * 4. Neither the name of the University nor the names of its contributors
30: * may be used to endorse or promote products derived from this software
31: * without specific prior written permission.
32: *
33: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
34: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
37: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43: * SUCH DAMAGE.
44: *
1.11 ! aaron 45: * $Id: scp.c,v 1.10 1999/10/04 01:59:56 deraadt Exp $
1.1 deraadt 46: */
47:
48: #include "includes.h"
1.11 ! aaron 49: RCSID("$Id: scp.c,v 1.10 1999/10/04 01:59:56 deraadt Exp $");
1.1 deraadt 50:
51: #include "ssh.h"
52: #include "xmalloc.h"
53: #include <utime.h>
54:
55: #define _PATH_CP "cp"
56:
1.11 ! aaron 57: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 58: #define STALLTIME 5
59:
1.11 ! aaron 60: /* Visual statistics about files as they are transferred. */
! 61: void progressmeter(int);
! 62:
! 63: /* Returns width of the terminal (for progress meter calculations). */
! 64: int getttywidth(void);
! 65:
! 66: /* Time a transfer started. */
1.4 aaron 67: static struct timeval start;
1.11 ! aaron 68:
! 69: /* Number of bytes of current file transferred so far. */
! 70: volatile unsigned long statbytes;
! 71:
! 72: /* Total size of current file. */
1.4 aaron 73: unsigned long totalbytes = 0;
1.11 ! aaron 74:
! 75: /* Name of current file being transferred. */
! 76: char *curfile;
1.4 aaron 77:
1.1 deraadt 78: /* This is set to non-zero to enable verbose mode. */
79: int verbose = 0;
80:
81: /* This is set to non-zero if compression is desired. */
82: int compress = 0;
83:
1.6 aaron 84: /* This is set to zero if the progressmeter is not desired. */
85: int showprogress = 1;
86:
1.1 deraadt 87: /* This is set to non-zero if running in batch mode (that is, password
88: and passphrase queries are not allowed). */
89: int batchmode = 0;
90:
91: /* This is set to the cipher type string if given on the command line. */
92: char *cipher = NULL;
93:
94: /* This is set to the RSA authentication identity file name if given on
95: the command line. */
96: char *identity = NULL;
97:
98: /* This is the port to use in contacting the remote site (is non-NULL). */
99: char *port = NULL;
100:
101: /* This function executes the given command as the specified user on the given
102: host. This returns < 0 if execution fails, and >= 0 otherwise.
103: This assigns the input and output file descriptors on success. */
104:
105: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
106: {
107: int pin[2], pout[2], reserved[2];
108:
109: if (verbose)
110: fprintf(stderr, "Executing: host %s, user %s, command %s\n",
111: host, remuser ? remuser : "(unspecified)", cmd);
112:
113: /* Reserve two descriptors so that the real pipes won't get descriptors
114: 0 and 1 because that will screw up dup2 below. */
115: pipe(reserved);
116:
117: /* Create a socket pair for communicating with ssh. */
118: if (pipe(pin) < 0)
119: fatal("pipe: %s", strerror(errno));
120: if (pipe(pout) < 0)
121: fatal("pipe: %s", strerror(errno));
122:
123: /* Free the reserved descriptors. */
124: close(reserved[0]);
125: close(reserved[1]);
126:
127: /* For a child to execute the command on the remote host using ssh. */
128: if (fork() == 0)
129: {
130: char *args[100];
131: unsigned int i;
132:
133: /* Child. */
134: close(pin[1]);
135: close(pout[0]);
136: dup2(pin[0], 0);
137: dup2(pout[1], 1);
138: close(pin[0]);
139: close(pout[1]);
140:
141: i = 0;
142: args[i++] = SSH_PROGRAM;
143: args[i++] = "-x";
144: args[i++] = "-oFallBackToRsh no";
145: if (verbose)
146: args[i++] = "-v";
147: if (compress)
148: args[i++] = "-C";
149: if (batchmode)
150: args[i++] = "-oBatchMode yes";
151: if (cipher != NULL)
152: {
153: args[i++] = "-c";
154: args[i++] = cipher;
155: }
156: if (identity != NULL)
157: {
158: args[i++] = "-i";
159: args[i++] = identity;
160: }
161: if (port != NULL)
162: {
163: args[i++] = "-p";
164: args[i++] = port;
165: }
166: if (remuser != NULL)
167: {
168: args[i++] = "-l";
169: args[i++] = remuser;
170: }
171: args[i++] = host;
172: args[i++] = cmd;
173: args[i++] = NULL;
174:
175: execvp(SSH_PROGRAM, args);
176: perror(SSH_PROGRAM);
177: exit(1);
178: }
179: /* Parent. Close the other side, and return the local side. */
180: close(pin[0]);
181: *fdout = pin[1];
182: close(pout[1]);
183: *fdin = pout[0];
184: return 0;
185: }
186:
187: void fatal(const char *fmt, ...)
188: {
189: va_list ap;
190: char buf[1024];
191:
192: va_start(ap, fmt);
193: vsnprintf(buf, sizeof(buf), fmt, ap);
194: va_end(ap);
195: fprintf(stderr, "%s\n", buf);
196: exit(255);
197: }
198:
199: /* This stuff used to be in BSD rcp extern.h. */
200:
201: typedef struct {
202: int cnt;
203: char *buf;
204: } BUF;
205:
206: extern int iamremote;
207:
208: BUF *allocbuf(BUF *, int, int);
209: char *colon(char *);
210: void lostconn(int);
211: void nospace(void);
212: int okname(char *);
213: void run_err(const char *, ...);
214: void verifydir(char *);
215:
216: /* Stuff from BSD rcp.c continues. */
217:
218: struct passwd *pwd;
219: uid_t userid;
220: int errs, remin, remout;
221: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
222:
223: #define CMDNEEDS 64
224: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
225:
226: int response(void);
227: void rsource(char *, struct stat *);
228: void sink(int, char *[]);
229: void source(int, char *[]);
230: void tolocal(int, char *[]);
231: void toremote(char *, int, char *[]);
232: void usage(void);
233:
234: int
235: main(argc, argv)
236: int argc;
237: char *argv[];
238: {
239: int ch, fflag, tflag;
240: char *targ;
241: extern char *optarg;
242: extern int optind;
243:
244: fflag = tflag = 0;
1.6 aaron 245: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q")) != EOF)
1.1 deraadt 246: switch(ch) { /* User-visible flags. */
247: case 'p':
248: pflag = 1;
249: break;
250: case 'P':
251: port = optarg;
252: break;
253: case 'r':
254: iamrecursive = 1;
255: break;
256: /* Server options. */
257: case 'd':
258: targetshouldbedirectory = 1;
259: break;
260: case 'f': /* "from" */
261: iamremote = 1;
262: fflag = 1;
263: break;
264: case 't': /* "to" */
265: iamremote = 1;
266: tflag = 1;
267: break;
268: case 'c':
269: cipher = optarg;
270: break;
271: case 'i':
272: identity = optarg;
273: break;
274: case 'v':
275: verbose = 1;
276: break;
277: case 'B':
278: batchmode = 1;
279: break;
280: case 'C':
281: compress = 1;
282: break;
1.6 aaron 283: case 'q':
284: showprogress = 0;
285: break;
1.1 deraadt 286: case '?':
287: default:
288: usage();
289: }
290: argc -= optind;
291: argv += optind;
292:
293: if ((pwd = getpwuid(userid = getuid())) == NULL)
294: fatal("unknown user %d", (int)userid);
295:
1.7 deraadt 296: if (! isatty(STDERR_FILENO))
297: showprogress = 0;
298:
1.1 deraadt 299: remin = STDIN_FILENO;
300: remout = STDOUT_FILENO;
301:
302: if (fflag) { /* Follow "protocol", send data. */
303: (void)response();
304: source(argc, argv);
305: exit(errs != 0);
306: }
307:
308: if (tflag) { /* Receive data. */
309: sink(argc, argv);
310: exit(errs != 0);
311: }
312:
313: if (argc < 2)
314: usage();
315: if (argc > 2)
316: targetshouldbedirectory = 1;
317:
318: remin = remout = -1;
319: /* Command to be executed on remote system using "ssh". */
320: (void)sprintf(cmd, "scp%s%s%s%s", verbose ? " -v" : "",
321: iamrecursive ? " -r" : "", pflag ? " -p" : "",
322: targetshouldbedirectory ? " -d" : "");
323:
324: (void)signal(SIGPIPE, lostconn);
325:
326: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
327: toremote(targ, argc, argv);
328: else {
329: tolocal(argc, argv); /* Dest is local host. */
330: if (targetshouldbedirectory)
331: verifydir(argv[argc - 1]);
332: }
333: exit(errs != 0);
334: }
335:
336: void
337: toremote(targ, argc, argv)
338: char *targ, *argv[];
339: int argc;
340: {
341: int i, len;
342: char *bp, *host, *src, *suser, *thost, *tuser;
343:
344: *targ++ = 0;
345: if (*targ == 0)
346: targ = ".";
347:
348: if ((thost = strchr(argv[argc - 1], '@'))) {
349: /* user@host */
350: *thost++ = 0;
351: tuser = argv[argc - 1];
352: if (*tuser == '\0')
353: tuser = NULL;
354: else if (!okname(tuser))
355: exit(1);
356: } else {
357: thost = argv[argc - 1];
358: tuser = NULL;
359: }
360:
361: for (i = 0; i < argc - 1; i++) {
362: src = colon(argv[i]);
363: if (src) { /* remote to remote */
364: *src++ = 0;
365: if (*src == 0)
366: src = ".";
367: host = strchr(argv[i], '@');
368: len = strlen(SSH_PROGRAM) + strlen(argv[i]) +
369: strlen(src) + (tuser ? strlen(tuser) : 0) +
370: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
371: bp = xmalloc(len);
372: if (host) {
373: *host++ = 0;
374: suser = argv[i];
375: if (*suser == '\0')
376: suser = pwd->pw_name;
377: else if (!okname(suser))
378: continue;
379: (void)sprintf(bp,
380: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
381: SSH_PROGRAM, verbose ? " -v" : "",
382: suser, host, cmd, src,
383: tuser ? tuser : "", tuser ? "@" : "",
384: thost, targ);
385: } else
386: (void)sprintf(bp,
387: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
388: SSH_PROGRAM, verbose ? " -v" : "",
389: argv[i], cmd, src,
390: tuser ? tuser : "", tuser ? "@" : "",
391: thost, targ);
392: if (verbose)
393: fprintf(stderr, "Executing: %s\n", bp);
394: (void)system(bp);
395: (void)xfree(bp);
396: } else { /* local to remote */
397: if (remin == -1) {
398: len = strlen(targ) + CMDNEEDS + 20;
399: bp = xmalloc(len);
400: (void)sprintf(bp, "%s -t %s", cmd, targ);
401: host = thost;
402: if (do_cmd(host, tuser,
403: bp, &remin, &remout) < 0)
404: exit(1);
405: if (response() < 0)
406: exit(1);
407: (void)xfree(bp);
408: }
409: source(1, argv+i);
410: }
411: }
412: }
413:
414: void
415: tolocal(argc, argv)
416: int argc;
417: char *argv[];
418: {
419: int i, len;
420: char *bp, *host, *src, *suser;
421:
422: for (i = 0; i < argc - 1; i++) {
423: if (!(src = colon(argv[i]))) { /* Local to local. */
424: len = strlen(_PATH_CP) + strlen(argv[i]) +
425: strlen(argv[argc - 1]) + 20;
426: bp = xmalloc(len);
427: (void)sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
428: iamrecursive ? " -r" : "", pflag ? " -p" : "",
429: argv[i], argv[argc - 1]);
430: if (verbose)
431: fprintf(stderr, "Executing: %s\n", bp);
432: if (system(bp))
433: ++errs;
434: (void)xfree(bp);
435: continue;
436: }
437: *src++ = 0;
438: if (*src == 0)
439: src = ".";
440: if ((host = strchr(argv[i], '@')) == NULL) {
441: host = argv[i];
442: suser = NULL;
443: } else {
444: *host++ = 0;
445: suser = argv[i];
446: if (*suser == '\0')
447: suser = pwd->pw_name;
448: else if (!okname(suser))
449: continue;
450: }
451: len = strlen(src) + CMDNEEDS + 20;
452: bp = xmalloc(len);
453: (void)sprintf(bp, "%s -f %s", cmd, src);
454: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
455: (void)xfree(bp);
456: ++errs;
457: continue;
458: }
459: xfree(bp);
460: sink(1, argv + argc - 1);
461: (void)close(remin);
462: remin = remout = -1;
463: }
464: }
465:
466: void
467: source(argc, argv)
468: int argc;
469: char *argv[];
470: {
471: struct stat stb;
472: static BUF buffer;
473: BUF *bp;
474: off_t i;
475: int amt, fd, haderr, indx, result;
476: char *last, *name, buf[2048];
477:
478: for (indx = 0; indx < argc; ++indx) {
479: name = argv[indx];
1.11 ! aaron 480: statbytes = 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: */
510: (void)sprintf(buf, "T%lu 0 %lu 0\n",
511: (unsigned long)stb.st_mtime,
512: (unsigned long)stb.st_atime);
513: (void)write(remout, buf, strlen(buf));
514: if (response() < 0)
515: goto next;
516: }
517: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
518: (void)sprintf(buf, "C%04o %lu %s\n",
519: (unsigned int)(stb.st_mode & FILEMODEMASK),
520: (unsigned long)stb.st_size,
521: last);
522: if (verbose)
523: {
524: fprintf(stderr, "Sending file modes: %s", buf);
525: fflush(stderr);
526: }
527: (void)write(remout, buf, strlen(buf));
528: if (response() < 0)
529: goto next;
530: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
531: next: (void)close(fd);
532: continue;
533: }
534:
1.4 aaron 535: totalbytes = stb.st_size;
536:
537: /* kick-start the progress meter */
1.6 aaron 538: if(showprogress)
539: progressmeter(-1);
1.4 aaron 540:
1.1 deraadt 541: /* Keep writing after an error so that we stay sync'd up. */
542: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
543: amt = bp->cnt;
544: if (i + amt > stb.st_size)
545: amt = stb.st_size - i;
546: if (!haderr) {
547: result = read(fd, bp->buf, amt);
548: if (result != amt)
549: haderr = result >= 0 ? EIO : errno;
550: }
551: if (haderr)
552: (void)write(remout, bp->buf, amt);
553: else {
554: result = write(remout, bp->buf, amt);
555: if (result != amt)
556: haderr = result >= 0 ? EIO : errno;
1.4 aaron 557: statbytes += result;
1.1 deraadt 558: }
559: }
1.6 aaron 560: if(showprogress)
561: progressmeter(1);
1.4 aaron 562:
1.1 deraadt 563: if (close(fd) < 0 && !haderr)
564: haderr = errno;
565: if (!haderr)
566: (void)write(remout, "", 1);
567: else
568: run_err("%s: %s", name, strerror(haderr));
569: (void)response();
570: }
571: }
572:
573: void
574: rsource(name, statp)
575: char *name;
576: struct stat *statp;
577: {
578: DIR *dirp;
579: struct dirent *dp;
580: char *last, *vect[1], path[1100];
581:
582: if (!(dirp = opendir(name))) {
583: run_err("%s: %s", name, strerror(errno));
584: return;
585: }
586: last = strrchr(name, '/');
587: if (last == 0)
588: last = name;
589: else
590: last++;
591: if (pflag) {
592: (void)sprintf(path, "T%lu 0 %lu 0\n",
593: (unsigned long)statp->st_mtime,
594: (unsigned long)statp->st_atime);
595: (void)write(remout, path, strlen(path));
596: if (response() < 0) {
597: closedir(dirp);
598: return;
599: }
600: }
601: (void)sprintf(path,
602: "D%04o %d %.1024s\n", (unsigned int)(statp->st_mode & FILEMODEMASK),
603: 0, last);
604: if (verbose)
605: fprintf(stderr, "Entering directory: %s", path);
606: (void)write(remout, path, strlen(path));
607: if (response() < 0) {
608: closedir(dirp);
609: return;
610: }
611: while ((dp = readdir(dirp))) {
612: if (dp->d_ino == 0)
613: continue;
614: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
615: continue;
616: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
617: run_err("%s/%s: name too long", name, dp->d_name);
618: continue;
619: }
620: (void)sprintf(path, "%s/%s", name, dp->d_name);
621: vect[0] = path;
622: source(1, vect);
623: }
624: (void)closedir(dirp);
625: (void)write(remout, "E\n", 2);
626: (void)response();
627: }
628:
629: void
630: sink(argc, argv)
631: int argc;
632: char *argv[];
633: {
634: static BUF buffer;
635: struct stat stb;
636: enum { YES, NO, DISPLAYED } wrerr;
637: BUF *bp;
638: off_t i, j;
639: int amt, count, exists, first, mask, mode, ofd, omode;
640: int setimes, size, targisdir, wrerrno = 0;
641: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
642: struct utimbuf ut;
643: int dummy_usec;
644:
645: #define SCREWUP(str) { why = str; goto screwup; }
646:
647: setimes = targisdir = 0;
648: mask = umask(0);
649: if (!pflag)
650: (void)umask(mask);
651: if (argc != 1) {
652: run_err("ambiguous target");
653: exit(1);
654: }
655: targ = *argv;
656: if (targetshouldbedirectory)
657: verifydir(targ);
658:
659: (void)write(remout, "", 1);
660: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
661: targisdir = 1;
662: for (first = 1;; first = 0) {
663: cp = buf;
664: if (read(remin, cp, 1) <= 0)
665: return;
666: if (*cp++ == '\n')
667: SCREWUP("unexpected <newline>");
668: do {
669: if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
670: SCREWUP("lost connection");
671: *cp++ = ch;
672: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
673: *cp = 0;
674:
675: if (buf[0] == '\01' || buf[0] == '\02') {
676: if (iamremote == 0)
677: (void)write(STDERR_FILENO,
678: buf + 1, strlen(buf + 1));
679: if (buf[0] == '\02')
680: exit(1);
681: ++errs;
682: continue;
683: }
684: if (buf[0] == 'E') {
685: (void)write(remout, "", 1);
686: return;
687: }
688:
689: if (ch == '\n')
690: *--cp = 0;
691:
692: #define getnum(t) (t) = 0; \
693: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
694: cp = buf;
695: if (*cp == 'T') {
696: setimes++;
697: cp++;
698: getnum(ut.modtime);
699: if (*cp++ != ' ')
700: SCREWUP("mtime.sec not delimited");
701: getnum(dummy_usec);
702: if (*cp++ != ' ')
703: SCREWUP("mtime.usec not delimited");
704: getnum(ut.actime);
705: if (*cp++ != ' ')
706: SCREWUP("atime.sec not delimited");
707: getnum(dummy_usec);
708: if (*cp++ != '\0')
709: SCREWUP("atime.usec not delimited");
710: (void)write(remout, "", 1);
711: continue;
712: }
713: if (*cp != 'C' && *cp != 'D') {
714: /*
715: * Check for the case "rcp remote:foo\* local:bar".
716: * In this case, the line "No match." can be returned
717: * by the shell before the rcp command on the remote is
718: * executed so the ^Aerror_message convention isn't
719: * followed.
720: */
721: if (first) {
722: run_err("%s", cp);
723: exit(1);
724: }
725: SCREWUP("expected control record");
726: }
727: mode = 0;
728: for (++cp; cp < buf + 5; cp++) {
729: if (*cp < '0' || *cp > '7')
730: SCREWUP("bad mode");
731: mode = (mode << 3) | (*cp - '0');
732: }
733: if (*cp++ != ' ')
734: SCREWUP("mode not delimited");
735:
736: for (size = 0; *cp >= '0' && *cp <= '9';)
737: size = size * 10 + (*cp++ - '0');
738: if (*cp++ != ' ')
739: SCREWUP("size not delimited");
740: if (targisdir) {
741: static char *namebuf;
742: static int cursize;
743: size_t need;
744:
745: need = strlen(targ) + strlen(cp) + 250;
746: if (need > cursize)
747: namebuf = xmalloc(need);
748: (void)sprintf(namebuf, "%s%s%s", targ,
749: *targ ? "/" : "", cp);
750: np = namebuf;
751: } else
752: np = targ;
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)
762: (void)chmod(np, mode);
763: } else {
764: /* Handle copying from a read-only directory */
765: mod_flag = 1;
766: if (mkdir(np, mode | S_IRWXU) < 0)
767: goto bad;
768: }
769: vect[0] = np;
770: sink(1, vect);
771: if (setimes) {
772: setimes = 0;
773: if (utime(np, &ut) < 0)
774: run_err("%s: set times: %s",
775: np, strerror(errno));
776: }
777: if (mod_flag)
778: (void)chmod(np, mode);
779: continue;
780: }
781: omode = mode;
782: mode |= S_IWRITE;
783: if ((ofd = open(np, O_WRONLY|O_CREAT|O_TRUNC, mode)) < 0) {
784: bad: run_err("%s: %s", np, strerror(errno));
785: continue;
786: }
787: (void)write(remout, "", 1);
788: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
789: (void)close(ofd);
790: continue;
791: }
792: cp = bp->buf;
793: wrerr = NO;
1.7 deraadt 794:
795: if (showprogress) {
796: totalbytes = size;
797: progressmeter(-1);
798: }
1.1 deraadt 799: for (count = i = 0; i < size; i += 4096) {
800: amt = 4096;
801: if (i + amt > size)
802: amt = size - i;
803: count += amt;
804: do {
805: j = read(remin, cp, amt);
806: if (j <= 0) {
807: run_err("%s", j ? strerror(errno) :
808: "dropped connection");
809: exit(1);
810: }
811: amt -= j;
812: cp += j;
1.7 deraadt 813: statbytes += j;
1.1 deraadt 814: } while (amt > 0);
815: if (count == bp->cnt) {
816: /* Keep reading so we stay sync'd up. */
817: if (wrerr == NO) {
818: j = write(ofd, bp->buf, count);
819: if (j != count) {
820: wrerr = YES;
821: wrerrno = j >= 0 ? EIO : errno;
822: }
823: }
824: count = 0;
825: cp = bp->buf;
826: }
827: }
1.7 deraadt 828: if (showprogress)
829: progressmeter(1);
1.1 deraadt 830: if (count != 0 && wrerr == NO &&
831: (j = write(ofd, bp->buf, count)) != count) {
832: wrerr = YES;
833: wrerrno = j >= 0 ? EIO : errno;
834: }
835: #if 0
836: if (ftruncate(ofd, size)) {
837: run_err("%s: truncate: %s", np, strerror(errno));
838: wrerr = DISPLAYED;
839: }
840: #endif
841: if (pflag) {
842: if (exists || omode != mode)
843: if (fchmod(ofd, omode))
844: run_err("%s: set mode: %s",
845: np, strerror(errno));
846: } else {
847: if (!exists && omode != mode)
848: if (fchmod(ofd, omode & ~mask))
849: run_err("%s: set mode: %s",
850: np, strerror(errno));
851: }
852: (void)close(ofd);
853: (void)response();
854: if (setimes && wrerr == NO) {
855: setimes = 0;
856: if (utime(np, &ut) < 0) {
857: run_err("%s: set times: %s",
858: np, strerror(errno));
859: wrerr = DISPLAYED;
860: }
861: }
862: switch(wrerr) {
863: case YES:
864: run_err("%s: %s", np, strerror(wrerrno));
865: break;
866: case NO:
867: (void)write(remout, "", 1);
868: break;
869: case DISPLAYED:
870: break;
871: }
872: }
873: screwup:
874: run_err("protocol error: %s", why);
875: exit(1);
876: }
877:
878: int
879: response()
880: {
881: char ch, *cp, resp, rbuf[2048];
882:
883: if (read(remin, &resp, sizeof(resp)) != sizeof(resp))
884: lostconn(0);
885:
886: cp = rbuf;
887: switch(resp) {
888: case 0: /* ok */
889: return (0);
890: default:
891: *cp++ = resp;
892: /* FALLTHROUGH */
893: case 1: /* error, followed by error msg */
894: case 2: /* fatal error, "" */
895: do {
896: if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
897: lostconn(0);
898: *cp++ = ch;
899: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
900:
901: if (!iamremote)
902: (void)write(STDERR_FILENO, rbuf, cp - rbuf);
903: ++errs;
904: if (resp == 1)
905: return (-1);
906: exit(1);
907: }
908: /* NOTREACHED */
909: }
910:
911: void
912: usage()
913: {
914: (void)fprintf(stderr,
1.6 aaron 915: "usage: scp [-pqrvC] [-P port] [-c cipher] [-i identity] f1 f2; or:\n scp [options] f1 ... fn directory\n");
1.1 deraadt 916: exit(1);
917: }
918:
919: void
920: run_err(const char *fmt, ...)
921: {
922: static FILE *fp;
923: va_list ap;
924: va_start(ap, fmt);
925:
926: ++errs;
927: if (fp == NULL && !(fp = fdopen(remout, "w")))
928: return;
929: (void)fprintf(fp, "%c", 0x01);
930: (void)fprintf(fp, "scp: ");
931: (void)vfprintf(fp, fmt, ap);
932: (void)fprintf(fp, "\n");
933: (void)fflush(fp);
934:
935: if (!iamremote)
936: {
937: vfprintf(stderr, fmt, ap);
938: fprintf(stderr, "\n");
939: }
940:
941: va_end(ap);
942: }
943:
944: /* Stuff below is from BSD rcp util.c. */
945:
946: /*-
947: * Copyright (c) 1992, 1993
948: * The Regents of the University of California. All rights reserved.
949: *
950: * Redistribution and use in source and binary forms, with or without
951: * modification, are permitted provided that the following conditions
952: * are met:
953: * 1. Redistributions of source code must retain the above copyright
954: * notice, this list of conditions and the following disclaimer.
955: * 2. Redistributions in binary form must reproduce the above copyright
956: * notice, this list of conditions and the following disclaimer in the
957: * documentation and/or other materials provided with the distribution.
958: * 3. All advertising materials mentioning features or use of this software
959: * must display the following acknowledgement:
960: * This product includes software developed by the University of
961: * California, Berkeley and its contributors.
962: * 4. Neither the name of the University nor the names of its contributors
963: * may be used to endorse or promote products derived from this software
964: * without specific prior written permission.
965: *
966: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
967: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
968: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
969: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
970: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
971: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
972: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
973: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
974: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
975: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
976: * SUCH DAMAGE.
977: *
1.11 ! aaron 978: * $Id: scp.c,v 1.10 1999/10/04 01:59:56 deraadt Exp $
1.1 deraadt 979: */
980:
981: char *
982: colon(cp)
983: char *cp;
984: {
985: if (*cp == ':') /* Leading colon is part of file name. */
986: return (0);
987:
988: for (; *cp; ++cp) {
989: if (*cp == ':')
990: return (cp);
991: if (*cp == '/')
992: return (0);
993: }
994: return (0);
995: }
996:
997: void
998: verifydir(cp)
999: char *cp;
1000: {
1001: struct stat stb;
1002:
1003: if (!stat(cp, &stb)) {
1004: if (S_ISDIR(stb.st_mode))
1005: return;
1006: errno = ENOTDIR;
1007: }
1008: run_err("%s: %s", cp, strerror(errno));
1009: exit(1);
1010: }
1011:
1012: int
1013: okname(cp0)
1014: char *cp0;
1015: {
1016: int c;
1017: char *cp;
1018:
1019: cp = cp0;
1020: do {
1021: c = *cp;
1022: if (c & 0200)
1023: goto bad;
1024: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
1025: goto bad;
1026: } while (*++cp);
1027: return (1);
1028:
1029: bad: fprintf(stderr, "%s: invalid user name", cp0);
1030: return (0);
1031: }
1032:
1033: BUF *
1034: allocbuf(bp, fd, blksize)
1035: BUF *bp;
1036: int fd, blksize;
1037: {
1038: size_t size;
1039: struct stat stb;
1040:
1041: if (fstat(fd, &stb) < 0) {
1042: run_err("fstat: %s", strerror(errno));
1043: return (0);
1044: }
1045: if (stb.st_blksize == 0)
1046: size = blksize;
1047: else
1048: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.3 deraadt 1049: stb.st_blksize;
1.1 deraadt 1050: if (bp->cnt >= size)
1051: return (bp);
1052: if (bp->buf == NULL)
1053: bp->buf = xmalloc(size);
1054: else
1055: bp->buf = xrealloc(bp->buf, size);
1056: bp->cnt = size;
1057: return (bp);
1058: }
1059:
1060: void
1061: lostconn(signo)
1062: int signo;
1063: {
1064: if (!iamremote)
1065: fprintf(stderr, "lost connection\n");
1066: exit(1);
1067: }
1.4 aaron 1068:
1.10 deraadt 1069: /*
1070: * ensure all of data on socket comes through. f==read || f==write
1071: */
1072: int
1073: atomicio(f, fd, s, n)
1074: int (*f)();
1075: char *s;
1076: {
1077: int res, pos = 0;
1078:
1079: while (n>pos) {
1080: res = (f)(fd, s+pos, n-pos);
1081: switch (res) {
1082: case -1:
1083: if (errno==EINTR || errno==EAGAIN)
1084: continue;
1085: case 0:
1086: return (res);
1087: default:
1088: pos += res;
1089: }
1090: }
1091: return (pos);
1092: }
1093:
1.8 deraadt 1094: void
1095: alarmtimer(int wait)
1.4 aaron 1096: {
1097: struct itimerval itv;
1098:
1099: itv.it_value.tv_sec = wait;
1100: itv.it_value.tv_usec = 0;
1101: itv.it_interval = itv.it_value;
1102: setitimer(ITIMER_REAL, &itv, NULL);
1103: }
1104:
1.8 deraadt 1105: void
1106: updateprogressmeter(void)
1.4 aaron 1107: {
1.9 deraadt 1108: int save_errno = errno;
1109:
1.4 aaron 1110: progressmeter(0);
1.9 deraadt 1111: errno = save_errno;
1.4 aaron 1112: }
1113:
1.8 deraadt 1114: void
1115: progressmeter(int flag)
1.4 aaron 1116: {
1117: static const char prefixes[] = " KMGTP";
1118: static struct timeval lastupdate;
1.11 ! aaron 1119: static off_t lastsize;
1.4 aaron 1120: struct timeval now, td, wait;
1121: off_t cursize, abbrevsize;
1122: double elapsed;
1123: int ratio, barlength, i, remaining;
1124: char buf[256];
1125:
1126: if (flag == -1) {
1127: (void)gettimeofday(&start, (struct timezone *)0);
1128: lastupdate = start;
1.11 ! aaron 1129: lastsize = 0;
1.4 aaron 1130: }
1131: (void)gettimeofday(&now, (struct timezone *)0);
1132: cursize = statbytes;
1133: ratio = cursize * 100 / totalbytes;
1134: ratio = MAX(ratio, 0);
1135: ratio = MIN(ratio, 100);
1.11 ! aaron 1136: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1137:
1.11 ! aaron 1138: barlength = getttywidth() - 51;
1.4 aaron 1139: if (barlength > 0) {
1140: i = barlength * ratio / 100;
1141: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1142: "|%.*s%*s|", i,
1143: "*****************************************************************************"
1144: "*****************************************************************************",
1145: barlength - i, "");
1146: }
1147:
1148: i = 0;
1149: abbrevsize = cursize;
1150: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1151: i++;
1152: abbrevsize >>= 10;
1153: }
1154: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.10 deraadt 1155: (quad_t)abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1156: 'B');
1.4 aaron 1157:
1158: timersub(&now, &lastupdate, &wait);
1159: if (cursize > lastsize) {
1160: lastupdate = now;
1161: lastsize = cursize;
1162: if (wait.tv_sec >= STALLTIME) {
1163: start.tv_sec += wait.tv_sec;
1164: start.tv_usec += wait.tv_usec;
1165: }
1166: wait.tv_sec = 0;
1167: }
1168:
1169: timersub(&now, &start, &td);
1.6 aaron 1170: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1171:
1172: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1173: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.10 deraadt 1174: " --:-- ETA");
1.4 aaron 1175: } else if (wait.tv_sec >= STALLTIME) {
1176: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.10 deraadt 1177: " - stalled -");
1.4 aaron 1178: } else {
1179: remaining = (int)(totalbytes / (statbytes / elapsed) - elapsed);
1180: i = elapsed / 3600;
1181: if (i)
1182: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.10 deraadt 1183: "%2d:", i);
1.4 aaron 1184: else
1185: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.10 deraadt 1186: " ");
1.4 aaron 1187: i = remaining % 3600;
1188: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.10 deraadt 1189: "%02d:%02d ETA", i / 60, i % 60);
1.4 aaron 1190: }
1.10 deraadt 1191: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1192:
1193: if (flag == -1) {
1194: signal(SIGALRM, (void *)updateprogressmeter);
1195: alarmtimer(1);
1196: } else if (flag == 1) {
1.10 deraadt 1197: alarmtimer(0);
1198: write(fileno(stdout), "\n", 1);
1.4 aaron 1199: }
1200: }
1201:
1.8 deraadt 1202: int
1203: getttywidth(void)
1.4 aaron 1204: {
1205: struct winsize winsize;
1206:
1207: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1208: return(winsize.ws_col ? winsize.ws_col : 80);
1209: else
1210: return(80);
1211: }
1212:
1213: