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1.1 deraadt 1: /*
1.19 deraadt 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: *
1.1 deraadt 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: *
45: */
46:
47: #include "includes.h"
1.25 ! markus 48: RCSID("$Id: scp.c,v 1.24 2000/01/04 16:57:16 markus Exp $");
1.1 deraadt 49:
50: #include "ssh.h"
51: #include "xmalloc.h"
52: #include <utime.h>
53:
54: #define _PATH_CP "cp"
55:
1.11 aaron 56: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 57: #define STALLTIME 5
58:
1.11 aaron 59: /* Visual statistics about files as they are transferred. */
60: void progressmeter(int);
61:
62: /* Returns width of the terminal (for progress meter calculations). */
63: int getttywidth(void);
64:
65: /* Time a transfer started. */
1.4 aaron 66: static struct timeval start;
1.11 aaron 67:
68: /* Number of bytes of current file transferred so far. */
69: volatile unsigned long statbytes;
70:
71: /* Total size of current file. */
1.15 markus 72: off_t totalbytes = 0;
1.11 aaron 73:
74: /* Name of current file being transferred. */
75: char *curfile;
1.4 aaron 76:
1.23 markus 77: /* This is set to non-zero if IPv4 is desired. */
78: int IPv4 = 0;
79:
80: /* This is set to non-zero if IPv6 is desired. */
81: int IPv6 = 0;
82:
1.1 deraadt 83: /* This is set to non-zero to enable verbose mode. */
1.17 markus 84: int verbose_mode = 0;
1.1 deraadt 85:
86: /* This is set to non-zero if compression is desired. */
87: int compress = 0;
88:
1.6 aaron 89: /* This is set to zero if the progressmeter is not desired. */
90: int showprogress = 1;
91:
1.1 deraadt 92: /* This is set to non-zero if running in batch mode (that is, password
93: and passphrase queries are not allowed). */
94: int batchmode = 0;
95:
96: /* This is set to the cipher type string if given on the command line. */
97: char *cipher = NULL;
98:
1.18 markus 99: /* This is set to the RSA authentication identity file name if given on
1.1 deraadt 100: the command line. */
101: char *identity = NULL;
102:
103: /* This is the port to use in contacting the remote site (is non-NULL). */
104: char *port = NULL;
105:
1.20 markus 106: /*
107: * This function executes the given command as the specified user on the
108: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
109: * assigns the input and output file descriptors on success.
110: */
1.1 deraadt 111:
1.18 markus 112: int
113: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 114: {
1.18 markus 115: int pin[2], pout[2], reserved[2];
116:
117: if (verbose_mode)
118: fprintf(stderr, "Executing: host %s, user %s, command %s\n",
119: host, remuser ? remuser : "(unspecified)", cmd);
120:
1.20 markus 121: /*
122: * Reserve two descriptors so that the real pipes won't get
123: * descriptors 0 and 1 because that will screw up dup2 below.
124: */
1.18 markus 125: pipe(reserved);
126:
127: /* Create a socket pair for communicating with ssh. */
128: if (pipe(pin) < 0)
129: fatal("pipe: %s", strerror(errno));
130: if (pipe(pout) < 0)
131: fatal("pipe: %s", strerror(errno));
132:
133: /* Free the reserved descriptors. */
134: close(reserved[0]);
135: close(reserved[1]);
136:
137: /* For a child to execute the command on the remote host using ssh. */
138: if (fork() == 0) {
139: char *args[100];
140: unsigned int i;
141:
142: /* Child. */
143: close(pin[1]);
144: close(pout[0]);
145: dup2(pin[0], 0);
146: dup2(pout[1], 1);
147: close(pin[0]);
148: close(pout[1]);
149:
150: i = 0;
151: args[i++] = SSH_PROGRAM;
152: args[i++] = "-x";
153: args[i++] = "-oFallBackToRsh no";
1.23 markus 154: if (IPv4)
155: args[i++] = "-4";
156: if (IPv6)
157: args[i++] = "-6";
158: args[i++] = "-oFallBackToRsh no";
1.18 markus 159: if (verbose_mode)
160: args[i++] = "-v";
161: if (compress)
162: args[i++] = "-C";
163: if (batchmode)
164: args[i++] = "-oBatchMode yes";
165: if (cipher != NULL) {
166: args[i++] = "-c";
167: args[i++] = cipher;
168: }
169: if (identity != NULL) {
170: args[i++] = "-i";
171: args[i++] = identity;
172: }
173: if (port != NULL) {
174: args[i++] = "-p";
175: args[i++] = port;
176: }
177: if (remuser != NULL) {
178: args[i++] = "-l";
179: args[i++] = remuser;
180: }
181: args[i++] = host;
182: args[i++] = cmd;
183: args[i++] = NULL;
184:
185: execvp(SSH_PROGRAM, args);
186: perror(SSH_PROGRAM);
187: exit(1);
188: }
189: /* Parent. Close the other side, and return the local side. */
190: close(pin[0]);
191: *fdout = pin[1];
192: close(pout[1]);
193: *fdin = pout[0];
194: return 0;
195: }
1.1 deraadt 196:
1.18 markus 197: void
198: fatal(const char *fmt,...)
199: {
200: va_list ap;
201: char buf[1024];
202:
203: va_start(ap, fmt);
204: vsnprintf(buf, sizeof(buf), fmt, ap);
205: va_end(ap);
206: fprintf(stderr, "%s\n", buf);
207: exit(255);
1.1 deraadt 208: }
209:
210: /* This stuff used to be in BSD rcp extern.h. */
211:
212: typedef struct {
213: int cnt;
214: char *buf;
215: } BUF;
216:
217: extern int iamremote;
218:
1.18 markus 219: BUF *allocbuf(BUF *, int, int);
220: char *colon(char *);
221: void lostconn(int);
222: void nospace(void);
223: int okname(char *);
224: void run_err(const char *,...);
225: void verifydir(char *);
1.1 deraadt 226:
227: /* Stuff from BSD rcp.c continues. */
228:
229: struct passwd *pwd;
1.18 markus 230: uid_t userid;
1.1 deraadt 231: int errs, remin, remout;
232: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
233:
234: #define CMDNEEDS 64
235: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
236:
1.18 markus 237: int response(void);
238: void rsource(char *, struct stat *);
239: void sink(int, char *[]);
240: void source(int, char *[]);
241: void tolocal(int, char *[]);
242: void toremote(char *, int, char *[]);
243: void usage(void);
1.1 deraadt 244:
245: int
246: main(argc, argv)
247: int argc;
248: char *argv[];
249: {
250: int ch, fflag, tflag;
251: char *targ;
252: extern char *optarg;
253: extern int optind;
254:
255: fflag = tflag = 0;
1.23 markus 256: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46")) != EOF)
1.18 markus 257: switch (ch) {
258: /* User-visible flags. */
1.23 markus 259: case '4':
260: IPv4 = 1;
261: break;
262: case '6':
263: IPv6 = 1;
264: break;
1.1 deraadt 265: case 'p':
266: pflag = 1;
267: break;
268: case 'P':
1.18 markus 269: port = optarg;
270: break;
1.1 deraadt 271: case 'r':
272: iamrecursive = 1;
273: break;
1.18 markus 274: /* Server options. */
1.1 deraadt 275: case 'd':
276: targetshouldbedirectory = 1;
277: break;
1.18 markus 278: case 'f': /* "from" */
1.1 deraadt 279: iamremote = 1;
280: fflag = 1;
281: break;
1.18 markus 282: case 't': /* "to" */
1.1 deraadt 283: iamremote = 1;
284: tflag = 1;
285: break;
286: case 'c':
287: cipher = optarg;
1.18 markus 288: break;
1.1 deraadt 289: case 'i':
1.18 markus 290: identity = optarg;
1.1 deraadt 291: break;
292: case 'v':
1.17 markus 293: verbose_mode = 1;
1.18 markus 294: break;
1.1 deraadt 295: case 'B':
1.18 markus 296: batchmode = 1;
297: break;
1.1 deraadt 298: case 'C':
1.18 markus 299: compress = 1;
300: break;
1.6 aaron 301: case 'q':
1.18 markus 302: showprogress = 0;
303: break;
1.1 deraadt 304: case '?':
305: default:
306: usage();
307: }
308: argc -= optind;
309: argv += optind;
310:
311: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 312: fatal("unknown user %d", (int) userid);
1.1 deraadt 313:
1.18 markus 314: if (!isatty(STDERR_FILENO))
1.7 deraadt 315: showprogress = 0;
316:
1.1 deraadt 317: remin = STDIN_FILENO;
318: remout = STDOUT_FILENO;
319:
1.18 markus 320: if (fflag) {
321: /* Follow "protocol", send data. */
322: (void) response();
1.1 deraadt 323: source(argc, argv);
324: exit(errs != 0);
325: }
1.18 markus 326: if (tflag) {
327: /* Receive data. */
1.1 deraadt 328: sink(argc, argv);
329: exit(errs != 0);
330: }
331: if (argc < 2)
332: usage();
333: if (argc > 2)
334: targetshouldbedirectory = 1;
335:
336: remin = remout = -1;
337: /* Command to be executed on remote system using "ssh". */
1.18 markus 338: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
339: iamrecursive ? " -r" : "", pflag ? " -p" : "",
340: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 341:
1.18 markus 342: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 343:
344: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
345: toremote(targ, argc, argv);
346: else {
1.18 markus 347: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 348: if (targetshouldbedirectory)
349: verifydir(argv[argc - 1]);
350: }
351: exit(errs != 0);
352: }
353:
1.23 markus 354: char *
355: cleanhostname(host)
356: char *host;
357: {
358: if (*host == '[' && host[strlen(host) - 1] == ']') {
359: host[strlen(host) - 1] = '\0';
360: return (host + 1);
361: } else
362: return host;
363: }
364:
1.1 deraadt 365: void
366: toremote(targ, argc, argv)
367: char *targ, *argv[];
368: int argc;
369: {
370: int i, len;
371: char *bp, *host, *src, *suser, *thost, *tuser;
372:
373: *targ++ = 0;
374: if (*targ == 0)
375: targ = ".";
376:
377: if ((thost = strchr(argv[argc - 1], '@'))) {
378: /* user@host */
379: *thost++ = 0;
380: tuser = argv[argc - 1];
381: if (*tuser == '\0')
382: tuser = NULL;
383: else if (!okname(tuser))
384: exit(1);
385: } else {
386: thost = argv[argc - 1];
387: tuser = NULL;
388: }
389:
390: for (i = 0; i < argc - 1; i++) {
391: src = colon(argv[i]);
1.18 markus 392: if (src) { /* remote to remote */
1.1 deraadt 393: *src++ = 0;
394: if (*src == 0)
395: src = ".";
396: host = strchr(argv[i], '@');
397: len = strlen(SSH_PROGRAM) + strlen(argv[i]) +
1.18 markus 398: strlen(src) + (tuser ? strlen(tuser) : 0) +
399: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
400: bp = xmalloc(len);
1.1 deraadt 401: if (host) {
402: *host++ = 0;
1.23 markus 403: host = cleanhostname(host);
1.1 deraadt 404: suser = argv[i];
405: if (*suser == '\0')
406: suser = pwd->pw_name;
407: else if (!okname(suser))
408: continue;
1.18 markus 409: (void) sprintf(bp,
410: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
411: SSH_PROGRAM, verbose_mode ? " -v" : "",
412: suser, host, cmd, src,
413: tuser ? tuser : "", tuser ? "@" : "",
414: thost, targ);
1.23 markus 415: } else {
416: host = cleanhostname(argv[i]);
1.18 markus 417: (void) sprintf(bp,
418: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
419: SSH_PROGRAM, verbose_mode ? " -v" : "",
1.23 markus 420: host, cmd, src,
1.18 markus 421: tuser ? tuser : "", tuser ? "@" : "",
422: thost, targ);
1.23 markus 423: }
1.18 markus 424: if (verbose_mode)
425: fprintf(stderr, "Executing: %s\n", bp);
426: (void) system(bp);
427: (void) xfree(bp);
428: } else { /* local to remote */
1.1 deraadt 429: if (remin == -1) {
430: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 431: bp = xmalloc(len);
432: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 433: host = cleanhostname(thost);
1.18 markus 434: if (do_cmd(host, tuser,
1.1 deraadt 435: bp, &remin, &remout) < 0)
1.18 markus 436: exit(1);
1.1 deraadt 437: if (response() < 0)
438: exit(1);
1.18 markus 439: (void) xfree(bp);
1.1 deraadt 440: }
1.18 markus 441: source(1, argv + i);
1.1 deraadt 442: }
443: }
444: }
445:
446: void
447: tolocal(argc, argv)
448: int argc;
449: char *argv[];
450: {
451: int i, len;
452: char *bp, *host, *src, *suser;
453:
454: for (i = 0; i < argc - 1; i++) {
1.18 markus 455: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 456: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.18 markus 457: strlen(argv[argc - 1]) + 20;
1.1 deraadt 458: bp = xmalloc(len);
1.18 markus 459: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
460: iamrecursive ? " -r" : "", pflag ? " -p" : "",
461: argv[i], argv[argc - 1]);
462: if (verbose_mode)
463: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 464: if (system(bp))
465: ++errs;
1.18 markus 466: (void) xfree(bp);
1.1 deraadt 467: continue;
468: }
469: *src++ = 0;
470: if (*src == 0)
471: src = ".";
472: if ((host = strchr(argv[i], '@')) == NULL) {
473: host = argv[i];
474: suser = NULL;
475: } else {
476: *host++ = 0;
477: suser = argv[i];
478: if (*suser == '\0')
479: suser = pwd->pw_name;
480: else if (!okname(suser))
481: continue;
482: }
1.23 markus 483: host = cleanhostname(host);
1.1 deraadt 484: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 485: bp = xmalloc(len);
486: (void) sprintf(bp, "%s -f %s", cmd, src);
487: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
488: (void) xfree(bp);
489: ++errs;
490: continue;
1.1 deraadt 491: }
1.18 markus 492: xfree(bp);
1.1 deraadt 493: sink(1, argv + argc - 1);
1.18 markus 494: (void) close(remin);
1.1 deraadt 495: remin = remout = -1;
496: }
497: }
498:
499: void
500: source(argc, argv)
501: int argc;
502: char *argv[];
503: {
504: struct stat stb;
505: static BUF buffer;
506: BUF *bp;
507: off_t i;
508: int amt, fd, haderr, indx, result;
509: char *last, *name, buf[2048];
510:
511: for (indx = 0; indx < argc; ++indx) {
1.18 markus 512: name = argv[indx];
1.11 aaron 513: statbytes = 0;
1.1 deraadt 514: if ((fd = open(name, O_RDONLY, 0)) < 0)
515: goto syserr;
516: if (fstat(fd, &stb) < 0) {
517: syserr: run_err("%s: %s", name, strerror(errno));
518: goto next;
519: }
520: switch (stb.st_mode & S_IFMT) {
521: case S_IFREG:
522: break;
523: case S_IFDIR:
524: if (iamrecursive) {
525: rsource(name, &stb);
526: goto next;
527: }
528: /* FALLTHROUGH */
529: default:
530: run_err("%s: not a regular file", name);
531: goto next;
532: }
533: if ((last = strrchr(name, '/')) == NULL)
534: last = name;
535: else
536: ++last;
1.11 aaron 537: curfile = last;
1.1 deraadt 538: if (pflag) {
539: /*
540: * Make it compatible with possible future
541: * versions expecting microseconds.
542: */
1.18 markus 543: (void) sprintf(buf, "T%lu 0 %lu 0\n",
544: (unsigned long) stb.st_mtime,
545: (unsigned long) stb.st_atime);
546: (void) write(remout, buf, strlen(buf));
1.1 deraadt 547: if (response() < 0)
548: goto next;
549: }
550: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.18 markus 551: (void) sprintf(buf, "C%04o %lu %s\n",
552: (unsigned int) (stb.st_mode & FILEMODEMASK),
553: (unsigned long) stb.st_size,
554: last);
555: if (verbose_mode) {
556: fprintf(stderr, "Sending file modes: %s", buf);
557: fflush(stderr);
558: }
559: (void) write(remout, buf, strlen(buf));
1.1 deraadt 560: if (response() < 0)
561: goto next;
562: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 563: next: (void) close(fd);
1.1 deraadt 564: continue;
565: }
1.12 aaron 566: if (showprogress) {
567: totalbytes = stb.st_size;
1.6 aaron 568: progressmeter(-1);
1.12 aaron 569: }
1.1 deraadt 570: /* Keep writing after an error so that we stay sync'd up. */
571: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
572: amt = bp->cnt;
573: if (i + amt > stb.st_size)
574: amt = stb.st_size - i;
575: if (!haderr) {
576: result = read(fd, bp->buf, amt);
577: if (result != amt)
578: haderr = result >= 0 ? EIO : errno;
579: }
580: if (haderr)
1.18 markus 581: (void) write(remout, bp->buf, amt);
1.1 deraadt 582: else {
583: result = write(remout, bp->buf, amt);
584: if (result != amt)
585: haderr = result >= 0 ? EIO : errno;
1.4 aaron 586: statbytes += result;
1.1 deraadt 587: }
588: }
1.18 markus 589: if (showprogress)
1.6 aaron 590: progressmeter(1);
1.4 aaron 591:
1.1 deraadt 592: if (close(fd) < 0 && !haderr)
593: haderr = errno;
594: if (!haderr)
1.18 markus 595: (void) write(remout, "", 1);
1.1 deraadt 596: else
597: run_err("%s: %s", name, strerror(haderr));
1.18 markus 598: (void) response();
1.1 deraadt 599: }
600: }
601:
602: void
603: rsource(name, statp)
604: char *name;
605: struct stat *statp;
606: {
607: DIR *dirp;
608: struct dirent *dp;
609: char *last, *vect[1], path[1100];
610:
611: if (!(dirp = opendir(name))) {
612: run_err("%s: %s", name, strerror(errno));
613: return;
614: }
615: last = strrchr(name, '/');
616: if (last == 0)
617: last = name;
618: else
619: last++;
620: if (pflag) {
1.18 markus 621: (void) sprintf(path, "T%lu 0 %lu 0\n",
622: (unsigned long) statp->st_mtime,
623: (unsigned long) statp->st_atime);
624: (void) write(remout, path, strlen(path));
1.1 deraadt 625: if (response() < 0) {
626: closedir(dirp);
627: return;
628: }
629: }
1.18 markus 630: (void) sprintf(path, "D%04o %d %.1024s\n",
631: (unsigned int) (statp->st_mode & FILEMODEMASK),
632: 0, last);
633: if (verbose_mode)
634: fprintf(stderr, "Entering directory: %s", path);
635: (void) write(remout, path, strlen(path));
1.1 deraadt 636: if (response() < 0) {
637: closedir(dirp);
638: return;
639: }
640: while ((dp = readdir(dirp))) {
641: if (dp->d_ino == 0)
642: continue;
643: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
644: continue;
645: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
646: run_err("%s/%s: name too long", name, dp->d_name);
647: continue;
648: }
1.18 markus 649: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 650: vect[0] = path;
651: source(1, vect);
652: }
1.18 markus 653: (void) closedir(dirp);
654: (void) write(remout, "E\n", 2);
655: (void) response();
1.1 deraadt 656: }
657:
658: void
659: sink(argc, argv)
660: int argc;
661: char *argv[];
662: {
663: static BUF buffer;
664: struct stat stb;
1.18 markus 665: enum {
666: YES, NO, DISPLAYED
667: } wrerr;
1.1 deraadt 668: BUF *bp;
669: off_t i, j;
670: int amt, count, exists, first, mask, mode, ofd, omode;
671: int setimes, size, targisdir, wrerrno = 0;
672: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 673: struct utimbuf ut;
674: int dummy_usec;
1.1 deraadt 675:
676: #define SCREWUP(str) { why = str; goto screwup; }
677:
678: setimes = targisdir = 0;
679: mask = umask(0);
680: if (!pflag)
1.18 markus 681: (void) umask(mask);
1.1 deraadt 682: if (argc != 1) {
683: run_err("ambiguous target");
684: exit(1);
685: }
686: targ = *argv;
687: if (targetshouldbedirectory)
688: verifydir(targ);
1.18 markus 689:
690: (void) write(remout, "", 1);
1.1 deraadt 691: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
692: targisdir = 1;
693: for (first = 1;; first = 0) {
694: cp = buf;
695: if (read(remin, cp, 1) <= 0)
696: return;
697: if (*cp++ == '\n')
698: SCREWUP("unexpected <newline>");
699: do {
700: if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
701: SCREWUP("lost connection");
702: *cp++ = ch;
703: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
704: *cp = 0;
705:
706: if (buf[0] == '\01' || buf[0] == '\02') {
707: if (iamremote == 0)
1.18 markus 708: (void) write(STDERR_FILENO,
709: buf + 1, strlen(buf + 1));
1.1 deraadt 710: if (buf[0] == '\02')
711: exit(1);
712: ++errs;
713: continue;
714: }
715: if (buf[0] == 'E') {
1.18 markus 716: (void) write(remout, "", 1);
1.1 deraadt 717: return;
718: }
719: if (ch == '\n')
720: *--cp = 0;
721:
722: #define getnum(t) (t) = 0; \
723: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
724: cp = buf;
725: if (*cp == 'T') {
726: setimes++;
727: cp++;
728: getnum(ut.modtime);
729: if (*cp++ != ' ')
730: SCREWUP("mtime.sec not delimited");
731: getnum(dummy_usec);
732: if (*cp++ != ' ')
733: SCREWUP("mtime.usec not delimited");
734: getnum(ut.actime);
735: if (*cp++ != ' ')
736: SCREWUP("atime.sec not delimited");
737: getnum(dummy_usec);
738: if (*cp++ != '\0')
739: SCREWUP("atime.usec not delimited");
1.18 markus 740: (void) write(remout, "", 1);
1.1 deraadt 741: continue;
742: }
743: if (*cp != 'C' && *cp != 'D') {
744: /*
745: * Check for the case "rcp remote:foo\* local:bar".
746: * In this case, the line "No match." can be returned
747: * by the shell before the rcp command on the remote is
748: * executed so the ^Aerror_message convention isn't
749: * followed.
750: */
751: if (first) {
752: run_err("%s", cp);
753: exit(1);
754: }
755: SCREWUP("expected control record");
756: }
757: mode = 0;
758: for (++cp; cp < buf + 5; cp++) {
759: if (*cp < '0' || *cp > '7')
760: SCREWUP("bad mode");
761: mode = (mode << 3) | (*cp - '0');
762: }
763: if (*cp++ != ' ')
764: SCREWUP("mode not delimited");
765:
1.18 markus 766: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 767: size = size * 10 + (*cp++ - '0');
768: if (*cp++ != ' ')
769: SCREWUP("size not delimited");
770: if (targisdir) {
771: static char *namebuf;
772: static int cursize;
773: size_t need;
774:
775: need = strlen(targ) + strlen(cp) + 250;
776: if (need > cursize)
1.18 markus 777: namebuf = xmalloc(need);
778: (void) sprintf(namebuf, "%s%s%s", targ,
779: *targ ? "/" : "", cp);
1.1 deraadt 780: np = namebuf;
781: } else
782: np = targ;
1.12 aaron 783: curfile = cp;
1.1 deraadt 784: exists = stat(np, &stb) == 0;
785: if (buf[0] == 'D') {
786: int mod_flag = pflag;
787: if (exists) {
788: if (!S_ISDIR(stb.st_mode)) {
789: errno = ENOTDIR;
790: goto bad;
791: }
792: if (pflag)
1.18 markus 793: (void) chmod(np, mode);
1.1 deraadt 794: } else {
1.18 markus 795: /* Handle copying from a read-only
796: directory */
1.1 deraadt 797: mod_flag = 1;
798: if (mkdir(np, mode | S_IRWXU) < 0)
799: goto bad;
800: }
801: vect[0] = np;
802: sink(1, vect);
803: if (setimes) {
804: setimes = 0;
805: if (utime(np, &ut) < 0)
1.18 markus 806: run_err("%s: set times: %s",
807: np, strerror(errno));
1.1 deraadt 808: }
809: if (mod_flag)
1.18 markus 810: (void) chmod(np, mode);
1.1 deraadt 811: continue;
812: }
813: omode = mode;
814: mode |= S_IWRITE;
1.18 markus 815: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 816: bad: run_err("%s: %s", np, strerror(errno));
817: continue;
818: }
1.18 markus 819: (void) write(remout, "", 1);
1.1 deraadt 820: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 821: (void) close(ofd);
1.1 deraadt 822: continue;
823: }
824: cp = bp->buf;
825: wrerr = NO;
1.7 deraadt 826:
827: if (showprogress) {
828: totalbytes = size;
829: progressmeter(-1);
830: }
1.12 aaron 831: statbytes = 0;
1.1 deraadt 832: for (count = i = 0; i < size; i += 4096) {
833: amt = 4096;
834: if (i + amt > size)
835: amt = size - i;
836: count += amt;
837: do {
838: j = read(remin, cp, amt);
839: if (j <= 0) {
840: run_err("%s", j ? strerror(errno) :
1.18 markus 841: "dropped connection");
1.1 deraadt 842: exit(1);
843: }
844: amt -= j;
845: cp += j;
1.18 markus 846: statbytes += j;
1.1 deraadt 847: } while (amt > 0);
848: if (count == bp->cnt) {
849: /* Keep reading so we stay sync'd up. */
850: if (wrerr == NO) {
851: j = write(ofd, bp->buf, count);
852: if (j != count) {
853: wrerr = YES;
1.18 markus 854: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 855: }
856: }
857: count = 0;
858: cp = bp->buf;
859: }
860: }
1.7 deraadt 861: if (showprogress)
862: progressmeter(1);
1.1 deraadt 863: if (count != 0 && wrerr == NO &&
864: (j = write(ofd, bp->buf, count)) != count) {
865: wrerr = YES;
1.18 markus 866: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 867: }
868: #if 0
869: if (ftruncate(ofd, size)) {
870: run_err("%s: truncate: %s", np, strerror(errno));
871: wrerr = DISPLAYED;
872: }
873: #endif
874: if (pflag) {
875: if (exists || omode != mode)
876: if (fchmod(ofd, omode))
877: run_err("%s: set mode: %s",
1.18 markus 878: np, strerror(errno));
1.1 deraadt 879: } else {
880: if (!exists && omode != mode)
881: if (fchmod(ofd, omode & ~mask))
882: run_err("%s: set mode: %s",
1.18 markus 883: np, strerror(errno));
1.1 deraadt 884: }
1.18 markus 885: (void) close(ofd);
886: (void) response();
1.1 deraadt 887: if (setimes && wrerr == NO) {
888: setimes = 0;
889: if (utime(np, &ut) < 0) {
890: run_err("%s: set times: %s",
1.18 markus 891: np, strerror(errno));
1.1 deraadt 892: wrerr = DISPLAYED;
893: }
894: }
1.18 markus 895: switch (wrerr) {
1.1 deraadt 896: case YES:
897: run_err("%s: %s", np, strerror(wrerrno));
898: break;
899: case NO:
1.18 markus 900: (void) write(remout, "", 1);
1.1 deraadt 901: break;
902: case DISPLAYED:
903: break;
904: }
905: }
906: screwup:
907: run_err("protocol error: %s", why);
908: exit(1);
909: }
910:
911: int
912: response()
913: {
914: char ch, *cp, resp, rbuf[2048];
915:
916: if (read(remin, &resp, sizeof(resp)) != sizeof(resp))
917: lostconn(0);
918:
919: cp = rbuf;
1.18 markus 920: switch (resp) {
921: case 0: /* ok */
1.1 deraadt 922: return (0);
923: default:
924: *cp++ = resp;
925: /* FALLTHROUGH */
1.18 markus 926: case 1: /* error, followed by error msg */
927: case 2: /* fatal error, "" */
1.1 deraadt 928: do {
929: if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
930: lostconn(0);
931: *cp++ = ch;
932: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
933:
934: if (!iamremote)
1.18 markus 935: (void) write(STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 936: ++errs;
937: if (resp == 1)
938: return (-1);
939: exit(1);
940: }
941: /* NOTREACHED */
942: }
943:
944: void
945: usage()
946: {
1.18 markus 947: (void) fprintf(stderr,
1.24 markus 948: "usage: scp [-pqrvC46] [-P port] [-c cipher] [-i identity] f1 f2; or:\n scp [options] f1 ... fn directory\n");
1.1 deraadt 949: exit(1);
950: }
951:
952: void
1.18 markus 953: run_err(const char *fmt,...)
1.1 deraadt 954: {
955: static FILE *fp;
956: va_list ap;
957: va_start(ap, fmt);
958:
959: ++errs;
960: if (fp == NULL && !(fp = fdopen(remout, "w")))
961: return;
1.18 markus 962: (void) fprintf(fp, "%c", 0x01);
963: (void) fprintf(fp, "scp: ");
964: (void) vfprintf(fp, fmt, ap);
965: (void) fprintf(fp, "\n");
966: (void) fflush(fp);
967:
968: if (!iamremote) {
969: vfprintf(stderr, fmt, ap);
970: fprintf(stderr, "\n");
971: }
1.1 deraadt 972: va_end(ap);
973: }
974:
975: /* Stuff below is from BSD rcp util.c. */
976:
977: /*-
978: * Copyright (c) 1992, 1993
979: * The Regents of the University of California. All rights reserved.
980: *
981: * Redistribution and use in source and binary forms, with or without
982: * modification, are permitted provided that the following conditions
983: * are met:
984: * 1. Redistributions of source code must retain the above copyright
985: * notice, this list of conditions and the following disclaimer.
986: * 2. Redistributions in binary form must reproduce the above copyright
987: * notice, this list of conditions and the following disclaimer in the
988: * documentation and/or other materials provided with the distribution.
989: * 3. All advertising materials mentioning features or use of this software
990: * must display the following acknowledgement:
991: * This product includes software developed by the University of
992: * California, Berkeley and its contributors.
993: * 4. Neither the name of the University nor the names of its contributors
994: * may be used to endorse or promote products derived from this software
995: * without specific prior written permission.
996: *
997: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
998: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
999: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1000: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1001: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1002: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1003: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1004: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1005: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1006: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1007: * SUCH DAMAGE.
1008: *
1.25 ! markus 1009: * $Id: scp.c,v 1.24 2000/01/04 16:57:16 markus Exp $
1.1 deraadt 1010: */
1011:
1012: char *
1013: colon(cp)
1014: char *cp;
1015: {
1.23 markus 1016: int flag = 0;
1017:
1.1 deraadt 1018: if (*cp == ':') /* Leading colon is part of file name. */
1019: return (0);
1.23 markus 1020: if (*cp == '[')
1021: flag = 1;
1.1 deraadt 1022:
1023: for (; *cp; ++cp) {
1.23 markus 1024: if (*cp == '@' && *(cp+1) == '[')
1025: flag = 1;
1026: if (*cp == ']' && *(cp+1) == ':' && flag)
1027: return (cp+1);
1028: if (*cp == ':' && !flag)
1.1 deraadt 1029: return (cp);
1030: if (*cp == '/')
1031: return (0);
1032: }
1033: return (0);
1034: }
1035:
1036: void
1037: verifydir(cp)
1038: char *cp;
1039: {
1040: struct stat stb;
1041:
1042: if (!stat(cp, &stb)) {
1043: if (S_ISDIR(stb.st_mode))
1044: return;
1045: errno = ENOTDIR;
1046: }
1047: run_err("%s: %s", cp, strerror(errno));
1048: exit(1);
1049: }
1050:
1051: int
1052: okname(cp0)
1053: char *cp0;
1054: {
1055: int c;
1056: char *cp;
1057:
1058: cp = cp0;
1059: do {
1060: c = *cp;
1061: if (c & 0200)
1062: goto bad;
1.25 ! markus 1063: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1064: goto bad;
1065: } while (*++cp);
1066: return (1);
1067:
1.25 ! markus 1068: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1069: return (0);
1070: }
1071:
1072: BUF *
1073: allocbuf(bp, fd, blksize)
1074: BUF *bp;
1075: int fd, blksize;
1076: {
1077: size_t size;
1078: struct stat stb;
1079:
1080: if (fstat(fd, &stb) < 0) {
1081: run_err("fstat: %s", strerror(errno));
1082: return (0);
1083: }
1.18 markus 1084: if (stb.st_blksize == 0)
1085: size = blksize;
1086: else
1087: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1088: stb.st_blksize;
1.1 deraadt 1089: if (bp->cnt >= size)
1090: return (bp);
1.18 markus 1091: if (bp->buf == NULL)
1092: bp->buf = xmalloc(size);
1093: else
1094: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1095: bp->cnt = size;
1096: return (bp);
1097: }
1098:
1099: void
1100: lostconn(signo)
1101: int signo;
1102: {
1103: if (!iamremote)
1104: fprintf(stderr, "lost connection\n");
1105: exit(1);
1106: }
1.4 aaron 1107:
1.10 deraadt 1108:
1.8 deraadt 1109: void
1110: alarmtimer(int wait)
1.4 aaron 1111: {
1.18 markus 1112: struct itimerval itv;
1.4 aaron 1113:
1.18 markus 1114: itv.it_value.tv_sec = wait;
1115: itv.it_value.tv_usec = 0;
1116: itv.it_interval = itv.it_value;
1117: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1118: }
1119:
1.8 deraadt 1120: void
1121: updateprogressmeter(void)
1.4 aaron 1122: {
1.9 deraadt 1123: int save_errno = errno;
1124:
1.4 aaron 1125: progressmeter(0);
1.9 deraadt 1126: errno = save_errno;
1.4 aaron 1127: }
1128:
1.16 deraadt 1129: int
1130: foregroundproc()
1131: {
1132: static pid_t pgrp = -1;
1133: int ctty_pgrp;
1134:
1135: if (pgrp == -1)
1136: pgrp = getpgrp();
1137:
1.18 markus 1138: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1139: ctty_pgrp == pgrp));
1.16 deraadt 1140: }
1141:
1.8 deraadt 1142: void
1143: progressmeter(int flag)
1.4 aaron 1144: {
1145: static const char prefixes[] = " KMGTP";
1146: static struct timeval lastupdate;
1.11 aaron 1147: static off_t lastsize;
1.4 aaron 1148: struct timeval now, td, wait;
1149: off_t cursize, abbrevsize;
1150: double elapsed;
1151: int ratio, barlength, i, remaining;
1152: char buf[256];
1153:
1154: if (flag == -1) {
1.18 markus 1155: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1156: lastupdate = start;
1.11 aaron 1157: lastsize = 0;
1.18 markus 1158: }
1.16 deraadt 1159: if (foregroundproc() == 0)
1160: return;
1161:
1.18 markus 1162: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1163: cursize = statbytes;
1.13 aaron 1164: if (totalbytes != 0) {
1.21 markus 1165: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1166: ratio = MAX(ratio, 0);
1167: ratio = MIN(ratio, 100);
1.18 markus 1168: } else
1.13 aaron 1169: ratio = 100;
1170:
1.18 markus 1171: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1172:
1.11 aaron 1173: barlength = getttywidth() - 51;
1.4 aaron 1174: if (barlength > 0) {
1175: i = barlength * ratio / 100;
1176: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1177: "|%.*s%*s|", i,
1178: "*****************************************************************************"
1179: "*****************************************************************************",
1180: barlength - i, "");
1.4 aaron 1181: }
1182: i = 0;
1183: abbrevsize = cursize;
1184: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1185: i++;
1186: abbrevsize >>= 10;
1187: }
1188: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.18 markus 1189: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1190: 'B');
1.4 aaron 1191:
1192: timersub(&now, &lastupdate, &wait);
1193: if (cursize > lastsize) {
1194: lastupdate = now;
1195: lastsize = cursize;
1196: if (wait.tv_sec >= STALLTIME) {
1197: start.tv_sec += wait.tv_sec;
1198: start.tv_usec += wait.tv_usec;
1199: }
1200: wait.tv_sec = 0;
1201: }
1202: timersub(&now, &start, &td);
1.6 aaron 1203: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1204:
1205: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1206: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1207: " --:-- ETA");
1.4 aaron 1208: } else if (wait.tv_sec >= STALLTIME) {
1209: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1210: " - stalled -");
1.4 aaron 1211: } else {
1.18 markus 1212: remaining = (int) (totalbytes / (statbytes / elapsed) - elapsed);
1.14 aaron 1213: i = remaining / 3600;
1.4 aaron 1214: if (i)
1215: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1216: "%2d:", i);
1.4 aaron 1217: else
1218: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1219: " ");
1.4 aaron 1220: i = remaining % 3600;
1221: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1222: "%02d:%02d ETA", i / 60, i % 60);
1.4 aaron 1223: }
1.10 deraadt 1224: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1225:
1226: if (flag == -1) {
1.18 markus 1227: signal(SIGALRM, (void *) updateprogressmeter);
1.4 aaron 1228: alarmtimer(1);
1229: } else if (flag == 1) {
1.10 deraadt 1230: alarmtimer(0);
1231: write(fileno(stdout), "\n", 1);
1.12 aaron 1232: statbytes = 0;
1.4 aaron 1233: }
1234: }
1235:
1.8 deraadt 1236: int
1237: getttywidth(void)
1.4 aaron 1238: {
1239: struct winsize winsize;
1240:
1241: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1242: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1243: else
1.18 markus 1244: return (80);
1.4 aaron 1245: }